Journal articles: 'Xen'

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El-Shemi, Adel M. "Multicharged Xei+ ions formed after de-excitation of inner-shell vacancies in Xe atom." Canadian Journal of Physics 82, no. 10 (2004): 811–18. http://dx.doi.org/10.1139/p04-045.

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Multicharged Xe ions following de-excitation of K-, L1-, L2,3-, M1-, M2,3-, and M4,5-subshell vacancies are calculated using a Monte-Carlo algorithm to simulate the vacancy cascade development. Fluorescence yield (radiative) and Auger and CosterKronig yields (nonradiative) are evaluated. The decay of the K hole state through radiative transitions is found to be more probable than through nonradiative transitions in the first step of de-excitation. On the other hand, the decay of L and M vacancies through nonradiative transitions are more probable. Ions, mainly produced from Xe in the K-shell vacancy state, are found to be Xe7+, Xe8+, Xe9+, and Xe10+. The charged Xe8+ ions predominate in the charge state distributions. The main product from the L1-shell ionization is found to be Xe8+ and Xe9+ ions, while the Xe8+ ions predominate at the L2,3 hole states. The charged Xe6+, Xe7+, and Xe8+ ions come mainly from 3s1/2 and 3p1/2,3/2 ionization, while Xe in 3d3/2,5/2 hole states becomes mainly Xe4+ and Xe5+ ions. The present results are found to agree well with the experimental data.PACS No.: 32.40.Hd

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Anderson, Benjamin R., Amy K. Joines, and Thomas E. Daniels. "Xen worlds." ACM SIGCSE Bulletin 41, no. 3 (2009): 293–97. http://dx.doi.org/10.1145/1595496.1562967.

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Nikolaev, Ruslan, and Godmar Back. "Perfctr-Xen." ACM SIGPLAN Notices 46, no. 7 (2011): 15–26. http://dx.doi.org/10.1145/2007477.1952687.

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Evers, Charlotte, Daniel Böhringer, Sara Kallee, et al. "XEN®-63 Compared to XEN®-45 Gel Stents to Reduce Intraocular Pressure in Glaucoma." Journal of Clinical Medicine 12, no. 15 (2023): 5043. http://dx.doi.org/10.3390/jcm12155043.

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The XEN® gel stent reduces intraocular pressure (IOP) in glaucoma. XEN®-45 is widely used; the newer XEN®-63 has a larger lumen targeting potentially lower IOP outcomes. We retrospectively compared the first 15 XEN®-63 cases to 15 matched XEN®-45 controls. With a preoperative IOP of 18.1 ± 3.9 mmHg (mean ± SD) and a final IOP of 9.1 ± 2.0 mmHg, XEN®-63 implantation resulted in an IOP reduction of 44.6 ± 16.5%. Similarly, with a preoperative IOP of 18.3 ± 4.5 mmHg and a final IOP of 10.3 ± 2.1 mmHg, XEN®-45 implantation resulted in an IOP reduction of 40.1 ± 17.2%. The median follow-up period was 204 days (range 78–338 days) for the XEN®-63 group and 386 days (range 99–1688 days) for the XEN®-45 group. In total, 5/15 eyes of each group underwent open conjunctival bleb revision within the period of observation. Three eyes of the XEN®-63 group had secondary glaucoma surgery. One eye in the XEN®-63 group and three eyes in the XEN®-45 group required a restart of antiglaucomatous medication. In conclusion, both stents effectively lower IOP and medication. XEN®-63 achieved a slightly lower IOP over a short follow-up. Complication and revision rates were similar.

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Chowdhury, Sara, Dominic N. Reeds, Dan L. Crimmins, et al. "Xenin-25 delays gastric emptying and reduces postprandial glucose levels in humans with and without Type 2 diabetes." American Journal of Physiology-Gastrointestinal and Liver Physiology 306, no. 4 (2014): G301—G309. http://dx.doi.org/10.1152/ajpgi.00383.2013.

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Xenin-25 (Xen) is a neurotensin-related peptide secreted by a subset of glucose-dependent insulinotropic polypeptide (GIP)-producing enteroendocrine cells. In animals, Xen regulates gastrointestinal function and glucose homeostasis, typically by initiating neural relays. However, little is known about Xen action in humans. This study determines whether exogenously administered Xen modulates gastric emptying and/or insulin secretion rates (ISRs) following meal ingestion. Fasted subjects with normal (NGT) or impaired (IGT) glucose tolerance and Type 2 diabetes mellitus (T2DM; n = 10–14 per group) ingested a liquid mixed meal plus acetaminophen (ACM; to assess gastric emptying) at time zero. On separate occasions, a primed-constant intravenous infusion of vehicle or Xen at 4 (Lo-Xen) or 12 (Hi-Xen) pmol·kg−1·min−1 was administered from zero until 300 min. Some subjects with NGT received 30- and 90-min Hi-Xen infusions. Plasma ACM, glucose, insulin, C-peptide, glucagon, Xen, GIP, and glucagon-like peptide-1 (GLP-1) levels were measured and ISRs calculated. Areas under the curves were compared for treatment effects. Infusion with Hi-Xen, but not Lo-Xen, similarly delayed gastric emptying and reduced postprandial glucose levels in all groups. Infusions for 90 or 300 min, but not 30 min, were equally effective. Hi-Xen reduced plasma GLP-1, but not GIP, levels without altering the insulin secretory response to glucose. Intense staining for Xen receptors was detected on PGP9.5-positive nerve fibers in the longitudinal muscle of the human stomach. Thus Xen reduces gastric emptying in humans with and without T2DM, probably via a neural relay. Moreover, endogenous GLP-1 may not be a major enhancer of insulin secretion in healthy humans under physiological conditions.

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Wanichwecharungruang, Boonsong, and Nitee Ratprasatporn. "24-month outcomes of XEN45 gel implant versus trabeculectomy in primary glaucoma." PLOS ONE 16, no. 8 (2021): e0256362. http://dx.doi.org/10.1371/journal.pone.0256362.

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Purpose To compare the efficacy and safety profiles of XEN implant versus trabeculectomy as a surgical intervention for primary glaucoma Methods A retrospective cohort study of mild to moderate stage glaucoma patients, who had undergone either XEN implantation or trabeculectomy with adjunctive mitomycin C, was performed in a tertiary eye center Results Fifty-seven eyes for XEN implant and 57 eyes for trabeculectomy with medically uncontrolled glaucoma were included. Preoperative IOP was 16–33 mmHg. Visual field mean deviation was -9.11±6.93 dB in XEN group, and -9.67±5.06 dB in trabeculectomy group (p = 0.195). At the 24-month timepoint, mean IOP was reduced from 21.6±4.0 to 14.6±3.5 mmHg (32.4% reduction) in the XEN group (p<0.001), and from 22.5±5.8 to 12.5±4.1 mmHg (44.4% reduction) in the trabeculectomy group (p<0.001). Final IOP in XEN was significantly higher than trabeculectomy (p = 0.008) with lesser mean IOP percentage reduction at month 24 (p = 0.045). Mean number of medications was reduced from 2.2±1.4 to 0.5±0.7 in XEN group (p<0.001), and from 2.4±0.7 to 0.8±1.3 in trabeculectomy group (p<0.001). Final number of medications was not different between the groups (p = 0.225). Surgical success was comparable between XEN and trabeculectomy group. Overall success was 71.4% vs. 73.3% (p = 0.850), and complete success was 62.9% vs. 62.2% (p = 0.954), respectively. XEN had lower rate of numerical hypotony than trabeculectomy. No serious complication occurred in either procedure group. Conclusion At 24 months, XEN showed a rate of success comparable to that of trabeculectomy. Although XEN had a higher final IOP than trabeculectomy, XEN achieved 32% IOP reduction, and achieved final IOP in mid-teen level. No serious complication occurred in either group. XEN can be applied for treatment of mild to moderate stages of glaucoma in Southeast Asian patients.

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D’Alessandro, Elisa, Jacopo M. Guidotti, Kaweh Mansouri, and André Mermoud. "XEN-augmented Baerveldt." Journal of Glaucoma 26, no. 2 (2017): e90-e92. http://dx.doi.org/10.1097/ijg.0000000000000562.

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Razeghinejad, Reza. "Xen Luminal Obstruction." Ophthalmology Glaucoma 3, no. 5 (2020): 376. http://dx.doi.org/10.1016/j.ogla.2020.04.010.

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Pirani, Vittorio, Francesco Virgili, and Vincenzo Ramovecchi. "Short-Term Outcomes of XEN45 Standalone versus Combined with Phacoemulsification in Open-Angle Glaucoma Patients: A Retrospective Study." Journal of Clinical Medicine 13, no. 1 (2023): 157. http://dx.doi.org/10.3390/jcm13010157.

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The XEN45 is a minimally invasive glaucoma surgery device commonly used in clinical practice. This retrospective study included consecutive patients with open-angle glaucoma who underwent a XEN45 implant with mitomycin C, either alone or in combination with phacoemulsification, between June 2015 and March 2021. The primary end point was the mean change in intraocular pressure (IOP) from the baseline to month 6. A total of 677 eyes, 395 (58.3%) in the XEN alone group and 282 (41.7%) in the XEN+Phaco group, were included in this study. The preoperative IOP was significantly lowered from 28.7 ± 8.6 mmHg and 25.4 ± 6.9 mmHg to 13.5 ± 5.0 mmHg and 13.5 ± 4.1 mmHg at month 6 in the XEN solo and XEN+Phaco groups, respectively, with p < 0.0001 each. The mean (95% confidence interval) number of ocular hypotensive medications was significantly reduced from 3.3 (3.2–3.4) to 0.2 (0.1–0.2) and from 3.1 (2.9–3.2) to 0.2 (0.1–0.2) in the XEN solo and XEN+Phaco groups, respectively, with p < 0.0001 each. Needling was performed in 228 (33.7%) eyes. Conclusions: the XEN implant significantly reduces both IOP and the number of ocular hypotensive medications. IOP lowering was higher in the XEN solo group than in the XEN+Phaco one, although such a difference was only evident during the first month after surgery.

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Fernández-García, Aitor, Ying Zhou, Mercedes García-Alonso, Henry D. Andrango, Francisco Poyales, and Nuria Garzón. "Comparing Medium-Term Clinical Outcomes following XEN® 45 and XEN® 63 Device Implantation." Journal of Ophthalmology 2020 (March 23, 2020): 1–6. http://dx.doi.org/10.1155/2020/4796548.

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Purpose. To evaluate medium-term clinical outcomes with XEN® 45 or XEN® 63 Gel Stent (Allergan, Dublin, Ireland) for treatment of primary open angle glaucoma (POAG). Materials and Methods. Retrospective, descriptive, and observational study involving 40 patients implanted with a XEN® 45 Gel Stent and 34 implanted with a XEN® 63 Gel Stent who had undergone POAG surgery and had been followed up and controlled between 12 and 36 months. Results. IOP dropped from 18.02 ± 5.23 mmHg preop to 13.81 ± 1.88, 14.80 ± 2.23, and 14.62 ± 1.90 at 1, 2, and 3 years after surgery (p<0.001) consecutively with XEN® 45 and from 19.00 ± 6.11 mmHg preop to 15.47 ± 2.45, 14.66 ± 2.45, and 15.46 ± 2.48 at 1, 2, and 3 years after surgery (p<0.001) with XEN® 63. The number of drugs used by patients to treat their glaucoma decreased after undergoing surgery in both groups. Within the XEN® 45 group, mean changes at 1 year, 2 years, and 3 years amounted to 70%, 74.3%, and 37.5%, respectively, whereas within the XEN® 63 group, the mean reduction was 75%, 79.8%, and 71.9%. When comparing the outcomes for two groups, the differences did not prove to be statistically significant. More than 90% of the procedures included in the study (using either gel-stent device) were completed without any noteworthy complications. Conclusion. POAG surgical procedures with either XEN® 45 or XEN® 63 Gel Stent implantation could be a safe and effective treatment approach.

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Zhang, Sheng, Krzysztof Hyrc, Songyan Wang, and Burton M. Wice. "Xenin-25 increases cytosolic free calcium levels and acetylcholine release from a subset of myenteric neurons." American Journal of Physiology-Gastrointestinal and Liver Physiology 303, no. 12 (2012): G1347—G1355. http://dx.doi.org/10.1152/ajpgi.00116.2012.

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Xenin-25 (Xen) is a 25 amino acid neurotensin-related peptide reportedly produced with glucose-dependent insulinotropic polypeptide (GIP) by a subset of K cells in the proximal gut. We previously showed exogenously administered Xen, with GIP but not alone, increases insulin secretion in humans and mice. In mice, this effect is indirectly mediated via a central nervous system-independent cholinergic relay in the periphery. Xen also delays gastric emptying, reduces food intake, induces gall bladder contractions, and increases gut motility and secretion from the exocrine pancreas, suggesting that some effects of Xen could be mediated by myenteric neurons (MENs). To determine whether Xen activates these neurons, MENs were isolated from guinea pig proximal small intestines. Cells expressed neuronal markers and exhibited typical neuron-like morphology with extensive outgrowths emanating from cell bodies. Cytosolic free Ca2+ levels ([Ca2+]i) were measured using Fura-2. ATP/UTP, KCl, and forskolin increased [Ca2+]i in 99.6%, 92%, and 23% of the MENs imaged, respectively, indicating that they are functional and activated by nucleotide receptor signaling, direct depolarization, and cAMP. [Ca2+]i increased in only 12.7% of MENs treated with Xen. This rise was blocked by pretreatment with EGTA, diazoxide, SR48692, and neurotensin. Thus the Xen-mediated increase in [Ca2+]i involves influx of extracellular Ca2+ and activation of neurotensin receptor-1 (NTSR1). Xen also increased acetylcholine release from MENs. Amylin, produced by β-and enteroendocrine cells, delays gastric emptying and increased [Ca2+]i almost exclusively in Xen-responsive MENs. Immunohistochemistry demonstrated NTSR1 expression in human duodenal MENs. Thus myenteric rather than central neurons could mediate some effects of Xen and amylin.

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Ruparelia, Sunil, and Nir Shoham-Hazon. "Iris-Occlusion of XEN Gel Stent following Ab Externo Transconjunctival Implantation Technique." Case Reports in Ophthalmological Medicine 2021 (October 6, 2021): 1–3. http://dx.doi.org/10.1155/2021/2936047.

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The use of minimally invasive glaucoma surgery (MIGS) devices has become increasingly common for the management of elevated intraocular pressure (IOP) in the context of glaucoma. These technologies have traditionally been associated with fewer postoperative complications than conventional surgical techniques. However, we report on a rare case of transient XEN occlusion associated with pupil dilation following XEN gel stent implantation. This case highlights that in future XEN implantations, it may be preferable to position the XEN at a lesser angle to the iris to prevent such an occlusion. The use of different positionings of XEN is performed to optimize outcomes. However, it is highlighted that complications may arise in certain circumstances.

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Primanata, I. Gede, Nyoman Putra Sastra, and Dewa Made Wiharta. "LOAD BALANCING UNTUK PERBANDINGAN KINERJA VIRTUALISASI SERVER VMWARE DAN XEN SERVER." Jurnal SPEKTRUM 5, no. 1 (2018): 32. http://dx.doi.org/10.24843/spektrum.2018.v05.i01.p05.

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This study aims to compare VMware server virtualization technology and Xen server that simulates hardware into the software. In order to share loads can be balanced on both virtual servers, this research used HAproxy as Load Balancing which is implemented on Apache Web Server so performance from CPU usage side, memory and access speed from VMware and Xen server virtualization can be compared. By comparing these two models, it is expected to be used as a reference for selecting virtualization models for shared resource needs on one or more physical servers. From the results of testing in this study, it was found that the performance of VMware is better than Xen when viewed from the CPU usage. CPU usage in VMware is lower than Xen with 1.57% when handling one website and 1.58% when handling two websites. In terms of memory usage Xen Server is more efficient in memory usage when compared to VMware, Xen is more efficient memory of 29.11% and 34.84% for handling one and two websites when compared to VMware. While in terms of data access speed on Xen faster than VMware, which is about 42,132 Kbps.

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Oddone, Francesco, Gloria Roberti, Chiara Posarelli, et al. "Endothelial Cell Density After XEN Implant Surgery: Short-term Data From the Italian XEN Glaucoma Treatment Registry (XEN-GTR)." Journal of Glaucoma 30, no. 7 (2021): 559–65. http://dx.doi.org/10.1097/ijg.0000000000001840.

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Bormann, Caroline, Catharina Busch, Matus Rehak, et al. "Two Year Functional and Structural Changes—A Comparison between Trabeculectomy and XEN Microstent Implantation Using Spectral Domain Optical Coherence Tomography." Journal of Clinical Medicine 11, no. 19 (2022): 5840. http://dx.doi.org/10.3390/jcm11195840.

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The aim of this study was to analyze retinal nerve fiber layer (RNFL) thickness after trabeculectomy (TE) versus XEN microstent implantation (XEN) in primary open-angle glaucoma (POAG) cases naïve to prior incisional glaucoma surgery. We examined 119 consecutive glaucoma patients retrospectively, who received a TE or XEN for medically uncontrolled POAG. Intraocular pressure (IOP), amount of IOP-lowering medication, mean deviation of standard automated perimetry and peripapillary RNFL thickness were evaluated during the first 24 months after surgery. Fifty eyes were treated with TE and 69 eyes with XEN. Mean IOP decreased from 25.1 ± 0.8 to 13.3 ± 0.6 mm Hg (p < 0.01) and mean number of IOP-lowering eye drops from 3.2 ± 0.2 to 0.4 ± 0.1 (p < 0.01) 24 months after TE. In 69 eyes undergoing XEN, mean IOP dropped from 24.8 ± 0.6 to 15.0 ± 0.4 mm Hg (p < 0.01) and medication from 3.0 ± 0.1 to 0.6 ± 0.1 (p < 0.01) during the 24 months follow-up. Mean deviation of standard automated perimetry remained stable in TE (8.5 ± 0.7 to 8.1 ± 0.8 dB; p = 0.54) and XEN group (11,0 ± 0.5 to 11.5 ± 0.5 dB; p = 0.12) after 24 months, while mean RNFL thickness further deteriorated in the TE (−2.28 ± 0.65 µm/year) and XEN (−0.68 ± 0.34 µm/year) group. Postoperative RNFL loss develops after TE and XEN despite effective and significant lowering of IOP and amount of IOP-lowering medication. RNFL loss was more pronounced in the first year after glaucoma surgery.

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Gatie, Mohamed I., Danielle M. Spice, Amritpal Garha, et al. "O-GlcNAcylation and Regulation of Galectin-3 in Extraembryonic Endoderm Differentiation." Biomolecules 12, no. 5 (2022): 623. http://dx.doi.org/10.3390/biom12050623.

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The regulation of proteins through the addition and removal of O-linked β-N-acetylglucosamine (O-GlcNAc) plays a role in many signaling events, specifically in stem cell pluripotency and the regulation of differentiation. However, these post-translational modifications have not been explored in extraembryonic endoderm (XEN) differentiation. Of the plethora of proteins regulated through O-GlcNAc, we explored galectin-3 as a candidate protein known to have various intracellular and extracellular functions. Based on other studies, we predicted a reduction in global O-GlcNAcylation levels and a distinct galectin expression profile in XEN cells relative to embryonic stem (ES) cells. By conducting dot blot analysis, XEN cells had decreased levels of global O-GlcNAc than ES cells, which reflected a disbalance in the expression of genes encoding O-GlcNAc cycle enzymes. Immunoassays (Western blot and ELISA) revealed that although XEN cells (low O-GlcNAc) had lower concentrations of both intracellular and extracellular galectin-3 than ES cells (high O-GlcNAc), the relative secretion of galectin-3 was significantly increased by XEN cells. Inducing ES cells toward XEN in the presence of an O-GlcNAcase inhibitor was not sufficient to inhibit XEN differentiation. However, global O-GlcNAcylation was found to decrease in differentiated cells and the extracellular localization of galectin-3 accompanies these changes. Inhibiting global O-GlcNAcylation status does not, however, impact pluripotency and the ability of ES cells to differentiate to the XEN lineage.

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Bormann, Caroline, Catharina Busch, Matus Rehak, et al. "Refractive Changes after Glaucoma Surgery—A Comparison between Trabeculectomy and XEN Microstent Implantation." Life 12, no. 11 (2022): 1889. http://dx.doi.org/10.3390/life12111889.

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Best-corrected visual acuity often decreases temporarily or permanently after trabeculectomy (TE). The purpose of this study was to compare visual acuity and refractive changes after TE or XEN microstent implantation (XEN) in primary open-angle glaucoma (POAG) or pseudoexfoliation glaucoma (PEX) cases naïve to prior glaucoma surgery over a 24-month follow-up period. We analyzed 149 consecutive glaucoma patients who received either TE or XEN because of medically uncontrollable POAG or PEX. Intraocular pressure (IOP), IOP-lowering medication use, subjective and objective refraction and best-corrected visual acuity were evaluated. In addition, surgically induced astigmatism (SIA) was calculated and compared using the vector analysis method described by Jaffe and Clayman. A total of 93 eyes (85 POAG; 8 PEX) were treated with TE and 56 eyes (50 POAG; 6 PEX) with XEN. After 24 months, the mean IOP and number of IOP-lowering medications used decreased significantly after TE (p < 0.01) and XEN (p < 0.01). In the TE group, mean best-corrected visual acuity (BCVA) changed from 0.16 ± 0.26 to 0.23 ± 0.28 logMAR (p < 0.01) after 24 months, while mean BCVA did not change significantly in the XEN group (preoperative: 0.40 ± 0.50 logMAR, postoperative: 0.36 ± 0.49 logMAR; p = 0.28). SIA was almost the same in both groups at the end of the 24-month follow-up period (0.75 ± 0.60 diopters after TE and 0.81 ± 0.56 diopters after XEN; p = 0.57). In addition, there was no significant correlation between SIA and the observed BCVA changes or SIA and IOP reduction 12 or 24 months after TE or XEN. Our results demonstrate that TE and XEN are effective methods for reducing IOP and IOP-lowering medication use. The SIA was nearly similar in both groups. The SIA does not seem responsible for the decreased visual acuity after TE.

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V, Vera, Shah M, Smith T, Pinto LA, and Reitsamer H. "Navigating Challenges after Xen." Current Trends in Ophthalmology 4, no. 1 (2021): 210–26. http://dx.doi.org/10.18314/ctoy.v4i1.2078.

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The XEN Gel Stent is a surgical implant for the treatment of glaucoma unresponsive to maximum tolerated medical therapy, with higher predictability and fewer sight-threatening complications than trabeculectomy or tube shunts. While complications following XEN implantation may be less common than in other glaucoma procedures, they are not completely avoidable. This paper elaborates the most commonly reported complications following XEN implantation with an aim to mitigate their occurrence by understanding the pathophysiology behind them. In addition, the authors provide insights from the literature and their own experience and make recommendations for management when complications do occur.

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Laroche, Daniel, Chester Ng, and Giselle Lynch. "Baerveldt Attached to XEN." Journal of Glaucoma 27, no. 4 (2018): 382–84. http://dx.doi.org/10.1097/ijg.0000000000000895.

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Lim, Rongxuan, and Kin Sheng Lim. "XEN Implant-Related Endophthalmitis." Ophthalmology 125, no. 2 (2018): 209. http://dx.doi.org/10.1016/j.ophtha.2017.10.019.

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Beyret, Ergin, and Juan Carlos Izpisua Belmonte. "The XEN of reprogramming." Cell Research 26, no. 2 (2016): 147–48. http://dx.doi.org/10.1038/cr.2016.9.

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Kern, M., I. Douma, and P. Denis. "Fracture de Xen®." Journal Français d'Ophtalmologie 43, no. 9 (2020): 972–73. http://dx.doi.org/10.1016/j.jfo.2019.11.032.

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Kim, Seong Ah, Chan Kee Park, and Hae-Young Lopilly Park. "Outcomes of XEN Glaucoma Implant According to XEN Length in Anterior Chamber." Journal of the Korean Glaucoma Society 11, no. 2 (2022): 108. http://dx.doi.org/10.36299/jkgs.2022.11.2.108.

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Kennedy, Alasdair, Fadi Haddad, and Minas Georgopoulos. "Aqueous misdirection syndrome following ab interno gelatin stent can be managed successfully with anterior vitrectomy approach." European Journal of Ophthalmology 31, no. 1_suppl (2021): 16–19. http://dx.doi.org/10.1177/1120672120979196.

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Introduction: Minimally invasive glaucoma surgery (MIGS) is a relatively new surgical technique available to glaucoma surgeons. The ab interno gelatin XEN stent (XEN®45, Allergan Inc., CA, USA) drains aqueous into the subconjunctival space and is theoretically less invasive than trabeculectomy and therefore carries less risk. Aqueous misdirection syndrome (AMS) is a rare but well-recognised complication of any intraocular surgery. Only four cases have been reported following XEN stents but their management and outcome was not discussed. We present a case of AMS following XEN implantation including management and outcome. Case presentation: A 78 year old lady with an axial length of 21.27 mm and a previous episode of acute angle closure glaucoma was treated with laser peripheral iridectomy and, later, clear crystalline lens extraction. However, she continued to have high intraocular pressure (IOP) and a shallow anterior chamber. Despite medical therapy, she developed worsening glaucoma. She had XEN implantation to her right eye with no intraoperative complication. Unfortunately, she developed signs of AMS. Medical and laser zonulohyaloidectomy failed to resolve the condition. She then had surgical iriodozonulohyaloidectomy and anterior vitrectomy which resolved the AMS. Discussion: Management of AMS has been well documented. However, incidence following novel surgical techniques, such as XEN implantation, is not well reported. We have shown that AMS following XEN can be successfully treated using an anterior approach.

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H., Bele Rajendra, and Chitra Desai. "Exploring CPU Scheduling Strategies in Xen Virtualization Technology." International Journal of Sciences Volume 2, no. 2013-03 (2013): 53–55. https://doi.org/10.5281/zenodo.3348188.

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Xen is Open Source more popular virtualization solution provides lot of advantages and ready for various trials due to nature of Open Source. There are lots of migrations in the strategies utilized by Xen .While providing virtualization Xen implies different strategies for Resource Sharing, Memory virtualization, CPU Virtualization, I/O Virtualization etc. In Xen virtualization technology adjusting virtual machine to corresponding physical machine will play important role to enhance performance of the system this is prime duty of CPU Scheduler; hence we have considered CPU Virtualization in detail and attempted to explore CPU scheduling strategies its comparative study as well as research issues related to it.Read Complete Article at ijSciences: V2201302154

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Schargus, Marc, Catharina Busch, Matus Rehak, et al. "Functional Monitoring after Trabeculectomy or XEN Microstent Implantation Using Spectral Domain Optical Coherence Tomography and Visual Field Indices—A Retrospective Comparative Cohort Study." Biology 10, no. 4 (2021): 273. http://dx.doi.org/10.3390/biology10040273.

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The aim of this study was to compare the efficacy of trabeculectomy (TE), single XEN microstent implantation (solo XEN) or combined XEN implantation and cataract surgery (combined XEN) in primary open-angle glaucoma cases, naïve to prior surgical treatment, using a monocentric retrospective comparative cohort study. Intraocular pressure (IOP) and the number of IOP-lowering drugs (Meds) were monitored during the first 24 months after surgery. Further disease progression was monitored using peripapillary retinal nerve fiber layer (RNFL) thickness examinations using spectral domain optical coherence tomography (OCT) as well as visual acuity (VA) and visual field (VF) tests. In the TE group (52 eyes), the mean IOP decreased from 24.9 ± 5.9 to 13.9 ± 4.2 mmHg (p < 0.001) and Meds decreased from 3.2 ± 1.2 to 0.5 ± 1.1 (p < 0.001). In the solo XEN (38 eyes) and the combined XEN groups, the mean IOP decreased from 24.1 ± 4.7 to 15.7 ± 3.0 mmHg (p < 0.001) and 25.4 ± 5.6 to 14.7 ± 3.2 mmHg (p < 0.001), while Meds decreased from 3.3 ± 0.8 to 0.8 ± 1.2 (p < 0.001) and 2.7 ± 1.2 to 0.4 ± 1.0 (p < 0.001), respectively. The VF and VA indices showed no sign of further deterioration, the RNFL thickness further decreased in all treatment groups after surgery. TE and XEN led to comparable reductions in IOP and Meds. Although the VA and VF indices remained unaltered, the RNFL thickness continuously decreased in all treatment groups during the 24-month follow-up.

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Lee, Chang Kyu, Je Hyun Seo, and Su-Ho Lim. "Management of XEN Gel Stent Exposure with Conjunctival Erosion via Rotational Conjunctival Flap and Amniotic Membrane Transplantation—A Case Report." Medicina 58, no. 11 (2022): 1581. http://dx.doi.org/10.3390/medicina58111581.

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Background: Despite its proven effectiveness and safety profile, the XEN gel stent (Allergan Inc., CA, USA) for minimally invasive glaucoma surgery (MIGS) has a probability of postoperative complications, including postoperative hypotony, hyphema, stent migration, stent obstruction, bleb fibrosis, and fibrin formation. In particular, the use of adjunctive Mitomycin-C (MMC) might be associated with bleb-related complications, including conjunctival erosion, XEN gel stent exposure, and blebitis. However, there are few studies on XEN gel stent exposure and its management. We describe a case of XEN gel stent exposure with conjunctival erosion 18 months postoperatively, which resolved effectively after combination treatment with a rotational conjunctival flap and amniotic membrane transplantation. Case presentation: A 74-year-old Korean male patient with diabetes and hypertension underwent uncomplicated ab interno XEN gel stent implantation with a subconjunctival injection of 0.1 cc of 0.02% MMC and presented with low intraocular pressure (IOP) with a well-functioning filtering bleb. Periocular pain and tearing developed 18 months after the initial operation, with mild deterioration of visual acuity to 20/100. Despite conservative medical treatment, the conjunctival erosion was not relieved. Anterior segment optical coherence tomography (AS-OCT) revealed an exposed XEN gel stent with conjunctival erosion. We performed bleb revision surgery using a rotational conjunctival flap and amniotic membrane transplantation. Slit-lamp examination and AS-OCT showed a well-formed moderate bleb without leakage, and IOP continued to be well controlled (14 mm Hg with latanoprost) until six months after bleb revision. Conclusions: This case report highlights the importance of careful examination, including slit-lamp examination, the Seidel test, and AS-OCT, to identify accurate anatomical positioning and to monitor ocular surface changes after XEN gel stent implantation with MMC or 5-FU. Combination treatment (rotational conjunctival flap and amniotic membrane transplantation) may be relatively safe for persistent XEN gel stent exposure.

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Govindan, Sriram, Jeonghwan Choi, Arjun R. Nath, Amitayu Das, Bhuvan Urgaonkar, and Anand Sivasubramaniam. "Xen and Co.: Communication-Aware CPU Management in Consolidated Xen-Based Hosting Platforms." IEEE Transactions on Computers 58, no. 8 (2009): 1111–25. http://dx.doi.org/10.1109/tc.2009.53.

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Bustros, Youssef, Ankita Chaudhary, Lauriane Salinas, and Kaweh Mansouri. "Cutting the subconjunctival fragment of the XEN gel implant during needling procedure." European Journal of Ophthalmology 30, no. 1 (2018): NP11—NP15. http://dx.doi.org/10.1177/1120672118805876.

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Purpose: To describe the case and the follow-up of an inadvertently damaged XEN gel implant during needling procedure. Methods: Case report. Results: A 60-year-old African American patient underwent an uncomplicated combined phacoemulsification with the insertion of a XEN gel implant. Two months postoperatively, a needling procedure was required. During the needling procedure, a fragment of the XEN gel implant was inadvertently damaged. One month postoperatively, the intraocular pressure was still controlled and the bleb was functioning well. Conclusion: This case report reveals a previously unreported complication concerning XEN gel implant. It is important for the surgeon to pay attention during needling procedure, especially if there is a subconjunctival hemorrhage impairing the view, to defer the procedure until good visibility exists.

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Ma, Gun Jung, Hyung Bin Hwang, Hye Bin Yim, and Yong Chan Kim. "Short-term Outcomes and Prognostic Factor of Cataract Combined Surgery with iStent Inject versus XEN." Journal of the Korean Ophthalmological Society 63, no. 9 (2022): 769–77. http://dx.doi.org/10.3341/jkos.2022.63.9.769.

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Purpose: To analyze the intraocular pressure (IOP) lowering effect, prognostic factors, and complications that occurred after iStent inject® or XEN® implantation in South Korea.Methods: We retrospectively analyzed 83 eyes with glaucoma who were followed-up for more than 6 months after iStent inject® or XEN® implantation alone or combination with cataract surgery. The success of surgery was defined as an IOP ≤21 mmHg and IOP reduction ≥20% from preoperative IOP.Results: The average IOP drop rate for 6 months after surgery was 33.80% for iStent inject® (group A, 24 eyes), 24.91% for XEN® (group B, 15 eyes), 20.47% for combined iStent inject® and cataract surgery (group A-1, 32 eyes), and 30.39% for combined XEN® and cataract surgery. The cumulative success rate of 6 months after surgery was 45.5% ± 11.2% for group A, 52.8% ± 15.4% for group B, 51.9% ± 9.0% for group A-1, and 83.3% ± 10.8% for group B-1. The difference in success rates between groups A and B was not statistically significant (p = 0.574), and also between groups A-1 and B-1 (p = 0.079).Conclusions: iStent inject® and XEN® both have a significant effect on lowering IOP, regardless of combining cataract surgery. XEN® implantation led to a statistically significant reduction in IOP lowering medications.

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Posarelli, Chiara, Michele Figus, Gloria Roberti, et al. "Italian Candidates for the XEN Implant: An Overview from the Glaucoma Treatment Registry (XEN-GTR)." Journal of Clinical Medicine 11, no. 18 (2022): 5320. http://dx.doi.org/10.3390/jcm11185320.

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Background The Italian XEN Glaucoma Treatment Registry (XEN-GTR) was created to acquire a comprehensive prospective dataset that includes the patient characteristics, intraoperative variables, and postoperative management of glaucoma patients undergoing the XEN gel stent implantation. Methods This was a prospective observational, longitudinal clinical study involving 10 centres throughout Italy. The baseline examination included a comprehensive evaluation of demographic parameters (age, sex, ethnicity, and systemic condition), specific ophthalmological parameters, and quality of life questionnaire score collection. Results The baseline data of 273 patients were analysed. The median (IQR) age was 72 (65.0 to 78.0) years. Of the 273 patients, 123 (45%) were female and 150 (55%) were male. A total of 86% of the patients had open-angle glaucoma with a mean intraocular pressure of 24 ± 6 (range 12.0–60.0) mmHg. The mean number of medications was 2.7 ± 0.9 at baseline for the patients with a prevalence of prostaglandin analogues combined with a beta-blocker and anhydrase carbonic inhibitor (31.8%). The mean scores of the NEI-VFQ 25 and GSS questionnaires were 78 ± 18 (range 26.5–100) and 85 ± 14 (range 79–93), respectively. Combined XEN/cataract surgeries were scheduled in 73.7% of the patients. The preferred place for the XEN implant was the supero-nasal quadrant (91.6%). Conclusions Observing the baseline characteristics of the typical Italian candidates for the XEN gel implant shows that they are patients affected by POAG and cataracts, with moderate to severe glaucoma damage, all of which has an impact on their quality of life.

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Boberić, Milan. "JEDNO OD REŠENJA ZA PARTICIONISANJE CENTRALNE PROCESORSKE JEDINICE SA VIŠE JEZGARA." Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 34, no. 04 (2019): 781–84. http://dx.doi.org/10.24867/02ih07boberic.

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U ovom radu predstavljena je implementacija i optimizacija sistema za particionisanje centralne procesorske jedinice sa više jezgara. Sistem se sastoji iz UltraZed-EG ploče na kojoj je implementiran Xen Hypervisor kao sistem za particionisanje. Xen Hypervisor je virtuelni sloj koji koristi postojeći operativni sistem (host) koji mu omogućava pristup memoriji, prekidima i drugim resursima i omogućava kreiranje virtuelnih jezgara koja se po instrukcijama korisnika mogu raspoređivati na fizička jezgra. Dat je akcenat na real-time particionisanje i optimizaciju Xen Hypervisora u cilju poboljšanja performansi.

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Tatti, Filippo, Claudia Tronci, Filippo Lixi, et al. "No Changes in Keratometry Readings and Anterior Chamber Depth after XEN Gel Implantation in Patients with Glaucoma." Journal of Clinical Medicine 13, no. 9 (2024): 2537. http://dx.doi.org/10.3390/jcm13092537.

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Background: This study aimed to compare keratometry and anterior chamber depth (ACD) changes after XEN implantation in primary open-angle glaucoma (POAG) cases over a 3-month follow-up period. Methods: Twenty patients with POAG who underwent XEN63 implantation, either standalone or combined with cataract surgery, were included. Preoperative data, including best-corrected visual acuity (BCVA), refraction, gonioscopy, ophthalmoscopy, intraocular pressure (IOP) evaluation, and axial length, were collected. Corneal topography and ACD measurements were assessed preoperatively and at postoperative days 1, 7, 15, 30, 60, and 90. Each patient’s eye that underwent XEN surgery was included in the study group, with the fellow eye serving as a control. Results: In the study group, there was a significant decrease in IOP after XEN stent implantation at all investigated time intervals (p < 0.05). However, changes in mean ACD did not show statistically significant differences at any follow-up examination in both the study and control groups. Additionally, keratometry readings revealed no significant changes in total astigmatism or steep keratometry values in either group. Conclusions: XEN implantation in POAG cases resulted in a significant decrease in IOP over the 3-month follow-up period. However, there were no significant changes observed in mean ACD or keratometry readings, indicating stability in these parameters post-XEN implantation. These findings suggest that XEN implantation may be an effective option for IOP reduction without affecting corneal curvature or ACD in POAG patients.

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Karacali, Hüseyin, Nevzat Dönüm, and Efecan Cebel. "Xen Hypervisor Network Management System." European Journal of Research and Development 3, no. 1 (2023): 71–85. http://dx.doi.org/10.56038/ejrnd.v3i1.244.

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On embedded devices, network traffic management is crucial. One of the most fundamental criteria in projects on which embedded devices are created is connecting devices to one another. Additionally, sharing the internet connection, if there is one, has evolved into a need in today's world. In this project, two different operating systems are running by using hypervisor on the same board. The aim of this study is to connect two operating systems running on Xen Hypervisor using a virtual bridge and share the internet connection. An Embedded Linux distribution created with the Yocto project was run on the host domain (Domain-0 in Xen Hypervisor terminology), and Android Automotive OS was run on the guest domain (DomU in Xen Hypervisor terminology). A special topology has been designed for two virtual domains to communicate. Network management is handled by Embedded Linux, as Embedded Linux runs on Domain-0. Moreover, some scripts have been developed on both domains to implement the designed topology. These scripts enable quick and automatic completion of the required actions. In conclusion, this study describes how to automatically establish a network that provides communication between two virtual domains on Xen Hypervisor running on embedded devices. This paper is applicable to any project, provided the Xen hypervisor framework is used. It offers a reliable and efficient solution to connection needs such as infotainment and cluster systems, especially in systems where communication and internet are becoming more widespread for embedded devices such as automotive.

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Gatie, Mohamed I., Tyler T. Cooper, Reza Khazaee, Gilles A. Lajoie, and Gregory M. Kelly. "Lactate Enhances Mouse ES Cell Differentiation Toward XEN Cells In Vitro." Stem Cells 40, no. 3 (2022): 239–59. http://dx.doi.org/10.1093/stmcls/sxab022.

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Abstract Metabolism plays a crucial role for cell survival and function; however, recent evidence has implicated it in regulating embryonic development. In the embryo, the inner cell mass undergoes orchestrated cellular divisions resulting in the formation of pluripotent epiblast stem cells and primitive endoderm cells. However, both lineages can be captured in vitro as embryonic stem (ES) cells and extraembryonic endoderm (XEN) cells. Concomitantly, changes in the metabolic profile occurs during development, and are well documented in the embryonic lineages. However, a comprehensive multi-omic analysis of these features in XEN cells remains lacking. We observed that mouse XEN cells exhibited high sensitivity to glycolytic inhibition in addition to maintaining elevated intra- and extracellular lactate levels in vitro. Extraembryonic endoderm cells maintain high lactate levels by increased LDHA activity, and re-routing pyruvate away from the mitochondria resulting in reduced mitochondrial activity due to disruptions in electron transport chain stoichiometry. Importantly, exogenous lactate supplementation or promoting intracellular lactate accumulation enhances XEN differentiation in vitro. These results highlight how lactate contributes to XEN differentiation in vitro and may serve to enhance reprogramming efficiency of cells used for regenerative medicine.

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Yến, Nguyễn Thị Hoàng. "Các phương thức nhận dạng cấu trúc kết quả trong tiếng Việt". Tạp chí Khoa học 14, № 11 (2019): 139. http://dx.doi.org/10.54607/hcmue.js.14.11.324(2017).

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Thông qua việc khảo sát, phân tích các phát ngôn trong những tình huống giao tiếp thông thường, bài viết đề cập những phương thức nhận dạng cấu trúc kết quả tiếng Việt như xem xét sự phân bố tham tố vị từ, của khung vị ngữ; xem xét những tác tử đánh dấu khung đề - thuyết; xem xét những ràng buộc về cấu trúc câu. Việc cải biến câu (chêm xen, phục hồi, thay thế), chú trọng các yếu tố tình thái, các tác tử đánh dấu trong câu cũng đóng vai trò quan trọng trong việc không nhận diện sai cấu trúc kết quả.

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Dangda, Sonal, Maria V. Castanos, Anna Do, and Joseph F. Panarelli. "XEN Gel stent: A Review." Clinical and Experimental Vision and Eye Research 2, no. 1 (2019): 30–37. http://dx.doi.org/10.15713/ins.clever.25.

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Karri, Bhavani, Chandni Gupta, and Divya Mathews. "Endophthalmitis Following XEN Stent Exposure." Journal of Glaucoma 27, no. 10 (2018): 931–33. http://dx.doi.org/10.1097/ijg.0000000000001012.

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Gruene, Tim, Hinrich W. Hahn, Anna V. Luebben, et al. "Xen crystallography - choose your radiation." Acta Crystallographica Section A Foundations and Advances 71, a1 (2015): s44. http://dx.doi.org/10.1107/s2053273315099301.

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Lee, Graham A., and Peter Shah. "YAG Laser Xen Stent Truncation." Ophthalmology Glaucoma 3, no. 5 (2020): 359. http://dx.doi.org/10.1016/j.ogla.2020.05.002.

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Morais, Ronan Gil de. "SIX-XEN de Iannis Xenakis." Per Musi 24 (December 26, 2023): 1–31. http://dx.doi.org/10.35699/2317-6377.2023.48450.

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O SIX-XEN, instrumento acústico criado por Iannis Xenakis para Pléïades (1978), é representativo do processo criativo do compositor e seu apreço pela percussão. As descrições do próprio criador, bem como as conexões entre o objeto e seu trabalho teórico e prático, trazem luzes sobre aspectos estruturantes e fundamentais do universo conceitual e sonoro da pesquisa xenakiana. Estes aspectos podem ser observados através de diferentes documentos: esboços iniciais, manuscritos, diferentes edições de Pléïades, correspondências, notas pessoais e entrevistas. Enquanto objeto criado por um compositor, o instrumento possui características que são reflexos diretos das abordagens práticas e estéticas mais profundas de seu criador. Nesse sentindo, o presente artigo aborda o instrumento percussivo xenakiano com ênfase em: microtonalidade, batimento acústico, glissando e variabilidade através de repetições não-fiéis. Ao criar o SIX-XEN, Xenakis confiou à comunidade de percussionistas uma enorme responsabilidade, pois a pesquisa e a construção de protótipos são desafios constantes para se tocar sua peça.

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Mansouri, Kaweh, Jacopo Guidotti, Harsha L. Rao, et al. "Prospective Evaluation of Standalone XEN Gel Implant and Combined Phacoemulsification-XEN Gel Implant Surgery." Journal of Glaucoma 27, no. 2 (2018): 140–47. http://dx.doi.org/10.1097/ijg.0000000000000858.

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Kim, Yuri, Myungjin Kim, Dai Woo Kim, and Seungsoo Rho. "XEN Gel Stent for Conjunctiva with Minimal Mobility Caused by Scleral Encircling: A Case Report." Journal of Clinical Medicine 12, no. 13 (2023): 4293. http://dx.doi.org/10.3390/jcm12134293.

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This case report describes the successful use of a XEN gel stent for controlling intraocular pressure (IOP) in a patient who had previously undergone scleral encircling for rhegmatogenous retinal detachment. The patient had very limited mobile conjunctiva due to scarring caused by the earlier surgery, which limited their options for glaucoma surgery. The XEN gel stent, a minimally invasive glaucoma surgery (MIGS) procedure that does not require opening the conjunctiva, was implanted in the subconjunctival space using an ab interno approach. Postoperative blebs were imaged using anterior segment optical coherence tomography, and IOP was monitored over six months. This study found that the XEN gel stent effectively controlled the IOP, and there were no complications during or after surgery. This case report may expand the indication for the XEN gel stent, which could be considered a viable option for patients who have undergone scleral buckling and have limited mobile conjunctiva.

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Sacchi, Matteo, Antonio M. Fea, Gianluca Monsellato, et al. "Safety and Efficacy of Ab Interno XEN 45 Gel Stent in Patients with Glaucoma and High Myopia." Journal of Clinical Medicine 12, no. 7 (2023): 2477. http://dx.doi.org/10.3390/jcm12072477.

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This study reports on the safety and efficacy of Xen 45 in patients with glaucoma and high myopia. It was a retrospective study including patients with high myopia (>6D) who underwent Xen implant with 2 years of follow-up. The primary outcome was to report the incidence of hypotony (IOP ≤ 5 mmHg) and hypotony-related complications. Patients with high myopia treated with mitomycin-C-augmented trabeculectomy were included as a control group. We included 14 consecutive patients who underwent Xen implant (seven eyes) and trabeculectomy (seven eyes). The mean myopia was −14.71 ± 5.36 and −15.07 ± 6.11 in the trabeculectomy and Xen groups, respectively (p > 0.05). The success rate and the mean IOP at 1 and 2 years from the intervention were statistically comparable between the two groups. The group undergoing trabeculectomy showed a higher incidence of hypotony (six eyes (85.71%) vs. two eyes (28.57%)) and hypotony maculopathy (three eyes (42.86%) vs. zero eyes (0%)) and required more postoperative procedures. Patients with high myopia were at higher risk of hypotony-related complications after trabeculectomy. The Xen implant can achieve an IOP control comparable to trabeculectomy with a significantly better safety profile and can be considered as an option for the management of patients with high myopia and glaucoma.

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Hurtado, Ana, Victoria Fuentes, María Cura, Aitana Tamayo, and Laura Ceballos. "Long-Term In Vitro Adhesive Properties of Two Universal Adhesives to Dentin." Materials 16, no. 9 (2023): 3458. http://dx.doi.org/10.3390/ma16093458.

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The composition of universal adhesives, as well as the adhesive strategy, may influence bonding effectiveness and durability. This study aimed to evaluate the microtensile bond strength (µTBS) and nanoleakage (NL), immediately and after 6-month aging, and in situ degree of conversion (DC), of two universal adhesives (Scotchbond Universal Adhesive, SBU; Xeno Select, XEN) applied with etch-and-rinse (ER) and self-etch (SE) strategies, in comparison with a two-step SE adhesive (Clearfil SE Bond, CSE). Dentin surfaces of fifty human third molars were randomly assigned to the following adhesives: two universal adhesives, SBU and XEN, applied in ER or SE mode and CSE, used as control. Teeth were sectioned into beams to be tested under µTBS, half of them after 24 h, and the rest after 6 months of water aging. Selected beams from each tooth were used for NL evaluation and in situ DC quantification. SBU and CSE showed significantly higher mean µTBS and lower nanoleakage than XEN, regardless of the evaluation time and adhesion strategy. XEN-SE yielded the lowest degree of conversion. Therefore, adhesive properties of universal adhesives to dentin are material dependent, regardless of the adhesion strategy, exhibiting XEN a significantly worse performance than SBU.

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Hasan, Somar M., Theresa Theilig, Menelaos Papadimitriou, and Daniel Meller. "A Comparative Analysis of Morphology and Dimensions of Functional Blebs following PRESERFLO-Microshunt and XEN-Gel-Stent, a Study Using Anterior Segment OCT." Diagnostics 13, no. 14 (2023): 2318. http://dx.doi.org/10.3390/diagnostics13142318.

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Evaluation of bleb morphology is a vital part of successful filtration glaucoma surgery. The PRESERFLO-MicroShunt (PRESERFLO) and XEN-Gel-Stent (XEN) are drainage devices implanted using different surgical approaches (ab externo and ab interno, respectively), potentially resulting in distinct bleb morphology. Understanding these morphological differences is essential for postoperative care. In this study, we retrospectively examined functioning blebs following PRESERFLO and XEN implantation using high-resolution anterior segment OCT imaging. Qualitative assessment utilizing the Jenaer Bleb Grading System and quantitative assessment measuring 12 parameters representing bleb dimensions were conducted, and the results were compared between the two groups. A total of 80 eyes from 80 patients were included (41 after PRESERFLO, 39 after XEN). Functioning blebs following PRESERFLO exhibited a higher frequency of hyperreflective tenon changes compared to XEN (31.7% vs. 10.3%, respectively, p = 0.02) and a lower frequency of cavernous changes (17.1% vs. 35.9%, p = 0.05). Additionally, PRESERFLO blebs showed a higher frequency of visible episcleral lakes (92.7% vs. 30.8%, p < 0.001). Furthermore, PRESERFLO blebs demonstrated larger height (2.13 ± 0.5 vs. 1.85 ± 0.6 mm, p = 0.03), width (10.31 ± 2.3 vs. 9.1 ± 2.3 mm, p = 0.02), length (9.13 ± 1.8 vs. 8.24 ± 1.9 mm, p = 0.04), posterior location relative to the limbus (6.21 ± 1.2 vs. 5.21 ± 1.8 mm, p = 0.005), and a thicker bleb wall (1.60 ± 0.5 vs. 1.1 ± 0.4 mm, p = 0.004). Functioning blebs following PRESERFLO and XEN displayed morphological distinctions, likely attributed to variations in surgical techniques (ab externo vs. ab interno) and stent dimensions. These morphological differences should be taken into consideration when evaluating blebs, as they could impact assessments of bleb functionality and influence decisions regarding postoperative interventions.

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Tapdiya, Ashish, and Yuan Xue. "Performance Variations in Profiling Mysql Server on the Xen Platform: Is It Xen or Mysql?" International Journal of Computer Science and Information Technology 6, no. 2 (2014): 1–19. http://dx.doi.org/10.5121/ijcsit.2014.6201.

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Przeździecka-Dołyk, Joanna, Ewa Wałek, Agnieszka Jóźwik, Iwona Helemejko, Magdalena Asejczyk-Widlicka, and Marta Misiuk-Hojło. "Short-Time Changes of Intraocular Pressure and Biomechanics of the Anterior Segment of the Eye during Water Drinking Test in Patients with XEN GelStent." Journal of Clinical Medicine 11, no. 1 (2021): 175. http://dx.doi.org/10.3390/jcm11010175.

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Purpose: Little is known about short-term changes in intraocular pressure (IOP) following minimally invasive glaucoma surgeries, such as post-XEN GelStent implantation. Although the importance of corneal biomechanics in glaucoma diagnostics has been reported, little work has been conducted on postoperative description of changes when the structure of the anterior segment is altered. The aim of presented study was to evaluate the changes in the biomechanical parameters of the anterior segment of the post-XEN GelStent implantation eyes. Patients and Methods: This investigator-initiated, open-label, prospective, single-center study recruited patients. Patients with primary open-angle glaucoma (POAG) after XEN GelStent implantation versus matched POAG controls (considered as control group/CG) treated pharmacologically were screened. Water loading was conducted using 10 mL of water per kilogram of body weight for ≤5 min. Goldmann applanation tonometry (GAT), corneal hysteresis (CH), and corneal resistance factor (CRF) were performed before water loading and after every 15 min up to 1 h. Results: The water drinking test (WDT) was positive in 3.7% (1 out of 27) of patients in the post-XEN group compared with 22.7% (5 out of 22) of patients in the control group (CG; p < 0.05). Mean fluctuations in GAT during the WDT were higher in the CG group (3.6 ± 2.5 mmHg vs. 2.9 ± 1.3 mmHg, p < 0.001). CRF and CH changed significantly only in the post-XEN group. The mean peak of CH and CRF occurred at 15 and 30 min of the test in the post-XEN group (p = 0.001). Conclusion: WDT is important to assess the ability of compensation mechanisms to reduce fluctuations in IOP after water upload. The relationship between biomechanics of the anterior segment and glaucoma may have substantial impact on surgical outcome evaluation.

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Kim, Dong Seon, So Hee Kim, Youna Choi, et al. "Streptococcus infantarius Endophthalmitis after XEN Gel Stent Implantation." Journal of the Korean Ophthalmological Society 62, no. 10 (2021): 1440–44. http://dx.doi.org/10.3341/jkos.2021.62.10.1440.

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Purpose: To report a case of Streptococcus infantarius endophthalmitis related to the use of a XEN® Gel Stent.Case summary: A 75-year-old male was referred to our practice with a diagnosis of endophthalmitis 55 days after XEN® Gel Stent implantation. He had primary open-angle glaucoma. Visual acuity was 20/50. Slit-lamp examination revealed conjunctival injection and anterior chamber inflammation with hypopyon. Fundus examination showed inflammatory cells with exudative materials in the vitreous. The aqueous sampling for culture of causative micro-organisms was followed by removal of the XEN® Gel Stent, along with anterior chamber irrigation and intracameral and intravitreal injection of antibiotics. Streptococcus infantarius was isolated after 5 days. Vitrectomy, anterior chamber lavage, and intravitreal injection of antibiotics were additionally performed to control the intraocular inflammation. Sixteen days after vitrectomy, the intraocular inflammation disappeared. The choroidal detachment was resolved 34 days after vitrectomy. Visual improvement was limited to 20/100 at 6 months.Conclusions: XEN® Gel Stent-related bacterial endophthalmitis was successfully treated by implant removal, vitrectomy, and proper intraocular antibiotic treatment.

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Hoàng Thị, Mai, Pó Lù Thị, Hiền Trần Thị, Hoa Thân Thị та Hùng Lê Công. "ẢNH HƯỞNG CỦA MẬT ĐỘ TRỒNG VÀ LƯỢNG KALI BÓN ĐẾN SINH TRƯỞNG, PHÁT TRIỂN, NĂNG SUẤT CỦA GIỐNG ĐẬU TƯƠNG ĐT 84 TRỒNG XEN VƯỜN CAM GIAI ĐOẠN KIẾN THIẾT CƠ BẢN". SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY 6, № 17 (2021): 85–95. http://dx.doi.org/10.51453/2354-1431/2020/380.

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Cây đậu tương (Glycine max (L.) Merrill) là cây công nghiệp ngắn ngày có khả năng trồng xen trong vườn cây ăn quả, cây công nghiệp lâu năm ở giai đoạn kiến thiết cơ bản hoặc trồng xen trong vườn ngô, mía... Trong nghiên cứu này, đã sử dụng mật độ và lượng bón phân kali khác nhau việc trồng xen đậu tương ĐT84 ở vườn cam giai đoạn kiết thiêt cơ bản kết quả thu được: Ở mật độ 45 cây/m2 và mức bón 60 kg K2O/ha cây đậu tương sinh trưởng phát triển tốt và đạt năng suất 17,40 tạ/ha, cho hiệu quả kinh tế lãi thuần đạt 19,295,000 đ/ha và tỷ suất lợi nhuận đạt 4.00 lần.

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Journal articles on the topic 'Xen'

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