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Journal articles on the topic 'Collar cells'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Shigo, Alex L. "How tree branches are attached to trunks." Canadian Journal of Botany 63, no. 8 (1985): 1391–401. http://dx.doi.org/10.1139/b85-193.

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The vascular cambium and the growth ring it produces are continuous from trunk to branch, but the cells formed by the cambium in the upper junction of branch and trunk are oriented at approximately right angles to the normal orientation in the trunk and branch. Branch tissues begin to develop before trunk tissues early in the growing season. Maturation of branch tissues proceeds basipetally. The branch xylem is oriented downward at the branch base and encircles it to form a collar. The collar tissues meet on the trunk below the branch. The branch collar is enveloped later in the growing season

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Nguyen, Hoa, M. A. R. Koehl, Christian Oakes, Greg Bustamante, and Lisa Fauci. "Effects of cell morphology and attachment to a surface on the hydrodynamic performance of unicellular choanoflagellates." Journal of The Royal Society Interface 16, no. 150 (2019): 20180736. http://dx.doi.org/10.1098/rsif.2018.0736.

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Choanoflagellates, eukaryotes that are important predators on bacteria in aquatic ecosystems, are closely related to animals and are used as a model system to study the evolution of animals from protozoan ancestors. The choanoflagellate Salpingoeca rosetta has a complex life cycle with different morphotypes, some unicellular and some multicellular. Here we use computational fluid dynamics to study the hydrodynamics of swimming and feeding by different unicellular stages of S. rosetta : a swimming cell with a collar of prey-capturing microvilli surrounding a single flagellum, a thecate cell att

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3

Beesley, Julian E., David Hassall, Eileen A. Jessup, et al. "Early Cellular Events in the Development of Atherosclerotic Lesions in a Model of Accelerated Atherosclerosis in the Rabbit." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 3 (1990): 272–73. http://dx.doi.org/10.1017/s0424820100158911.

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We have generated several of the characteristic features of human atherosclerotic lesions in the rabbit with in 14 days by the placement of a soft, silastic collar around the carotid artery. Preliminary microscopical studies show that the lesion in the region of the collar consists of proliferating smooth muscle cells, foam cells in animals maintained on a high cholesterol diet and that the endothelial cells appear intact. The histology of the contralateral arteries was unaffected by the placement of the collar. This report describes our observations of the early cellular changes in the collar

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Arendt, Detlev. "Animal evolution: Of flame and collar cells." Current Biology 31, no. 16 (2021): R1003—R1006. http://dx.doi.org/10.1016/j.cub.2021.07.006.

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Hopkin, A. A., and J. Reid. "Host cell responses in susceptible hard pine tissue infected with Endocronartium harknessii." Canadian Journal of Botany 66, no. 12 (1988): 2511–17. http://dx.doi.org/10.1139/b88-341.

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Compatible interactions between susceptible hypocotyl tissue of Pinus banksiana Lamb, and Endocronartium harknessii (J. P. Moore) Y. Hirat. were studied using light and transmission electron microscopy. Host endoplasmic reticulum was observed to be closely associated with the haustorial body, although staining with silver proteinate failed to show any similarity between the contents of the endoplasmic reticulum and extrahaustorial matrix. The haustorium was also commonly observed to be closely associated with the host nucleus, often indenting the latter, though never in direct contact. Chlorop

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Huynh, T. T., A. C. Lawrie, F. Coates, and C. B. McLean. "Effect of developmental stage and peloton morphology on success in isolation of mycorrhizal fungi in Caladenia formosa (Orchidaceae)." Australian Journal of Botany 52, no. 2 (2004): 231. http://dx.doi.org/10.1071/bt03099.

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Six developmental stages (leafing, budding, flowering, fruiting, senescence and dormancy) were chosen in the threatened terrestrial orchid Caladenia formosa G.W.Carr to optimise isolation of effective fungi. Loose (undigested) pelotons were observed by scanning electron microscopy in the old tuber and collar, suggesting a role in infection of new tissue. In collars collected at early life stages (leafing, budding, flowering), pelotons had loosely coiled hyphae that were uniformly fine (1–2 μm diameter), with or without monilioid cells. In collars collected from older life stages (fruiting, sen

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Jiang, Ting-Xin, Ping Wu, Ang Li, Randall B. Widelitz, and Cheng-Ming Chuong. "Wound-Induced Regeneration in Feather Follicles: A Stepwise Strategy to Regenerate Stem Cells." Journal of Developmental Biology 13, no. 2 (2025): 10. https://doi.org/10.3390/jdb13020010.

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How to elicit and harness regeneration is a major issue in wound healing. Skin injury in most amniotes leads to repair rather than regeneration, except in hair and feathers. Feather follicles are unique organs that undergo physiological cyclic renewal, supported by a dynamic stem cell niche. During normal feather cycling, growth-phase proximal follicle collar bulge stem cells adopt a ring configuration. At the resting and initiation phases, these stem cells descend to the dermal papilla to form papillary ectoderm and ascend to the proximal follicle in a new growth phase. Plucking resting-phase

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Chen, Hsin, Audrey S. Howell, Alex Robeson, and Daniel J. Lew. "Dynamics of septin ring and collar formation in Saccharomyces cerevisiae." Biological Chemistry 392, no. 8-9 (2011): 689–97. http://dx.doi.org/10.1515/bc.2011.075.

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Abstract Although the septin ring and collar in budding yeast were described over 20 years ago, there is still controversy regarding the organization of septin filaments within these structures and about the way in which the ring first forms and about how it converts into a collar at the mother-bud neck. Here we present quantitative analyses of the recruitment of fluorescently-tagged septins to the ring and collar through the cell cycle. Septin ring assembly began several minutes after polarity establishment and this interval was longer in daughter than in mother cells, suggesting asymmetric i

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TANG, Ya-ling, Yong-zong YANG, Shuang WANG, et al. "Mast cell degranulator compound 48–80 promotes atherosclerotic plaque in apolipoprotein E knockout mice with perivascular common carotid collar placement." Chinese Medical Journal 122, no. 3 (2009): 319–25. http://dx.doi.org/10.3760/cma.j.issn.0366-6999.2009.03.016.

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Background Study of the relationship between mast cells and atherosclerosis is mostly dependent on pathological observation and cytology experiments. To investigate the effects of mast cells degranulation on plaque and their possible mechanisms we used apolipoprotein E knockout mice which had been placed perivascular common carotid collar with mast cells degranulator compound 48–80. Methods Forty apolipoprotein E knockout mice were fed a western-type diet and operated on with placement of perivascular right common carotid collar. Four weeks after surgery, the mice were intraperitoneally inject

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Cajiao-Mora, Kamila, John H. Brule, Micah B. Warren, Steven P. Ksepka, Haley R. Dutton, and Stephen A. Bullard. "Alobophora sandrae n. gen. n. sp. (Digenea: Caballerotrematidae) infecting Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) with a revision of Caballerotrema, key to Caballerotrematidae, and updated phylogeny." Parasite 31 (2024): 55. http://dx.doi.org/10.1051/parasite/2024054.

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We propose and describe Alobophora sandrae Cajiao-Mora & Bullard n. gen., n. sp. (Digenea: Caballerotrematidae) for specimens we collected from arapaima, Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) in the Amazon River near Leticia, Colombia. Alobophora differs from Caballerotrema Prudhoe, 1960 by lacking head collar projections and by having clustered corner spines and a narrow head collar (4–5× wider than pharynx), whereas Caballerotrema has head collar projections, lacks clustered corner spines, and has a broad head collar (7–8× wider than pharynx). We reassign Caballerotr

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Leadbeater, Barry S. C., QiBin Yu, Joyce Kent, and Dov J. Stekel. "Three-dimensional images of choanoflagellate loricae." Proceedings of the Royal Society B: Biological Sciences 276, no. 1654 (2008): 3–11. http://dx.doi.org/10.1098/rspb.2008.0844.

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Choanoflagellates are unicellular filter-feeding protozoa distributed universally in aquatic habitats. Cells are ovoid in shape with a single anterior flagellum encircled by a funnel-shaped collar of microvilli. Movement of the flagellum creates water currents from which food particles are entrapped on the outer surface of the collar and ingested by pseudopodia. One group of marine choanoflagellates has evolved an elaborate basket-like exoskeleton, the lorica, comprising two layers of siliceous costae made up of costal strips. A computer graphic model has been developed for generating three-di

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Kozubowski, Lukasz, Jennifer R. Larson, and Kelly Tatchell. "Role of the Septin Ring in the Asymmetric Localization of Proteins at the Mother-Bud Neck in Saccharomyces cerevisiae." Molecular Biology of the Cell 16, no. 8 (2005): 3455–66. http://dx.doi.org/10.1091/mbc.e04-09-0764.

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In the yeast Saccharomyces cerevisiae, septins form a scaffold in the shape of a ring at the future budding site that rearranges into a collar at the mother-bud neck. Many proteins bind asymmetrically to the septin collar. We found that the protein Bni4-CFP was located on the exterior of the septin ring before budding and on the mother side of the collar after budding, whereas the protein kinase Kcc4-YFP was located on the interior of the septin ring before budding and moved into the bud during the formation of the septin collar. Unbudded cells treated with the actin inhibitor latrunculin-A as

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Traver-Méndez, Valeria, Octavi Camps-Font, Francesc Ventura, et al. "In Vitro Characterization of an Anodized Surface of a Dental Implant Collar and Dental Abutment on Peri-Implant Cellular Response." Materials 16, no. 17 (2023): 6012. http://dx.doi.org/10.3390/ma16176012.

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The purpose of this paper was to determine the effect of anodization on the in vitro proliferation and adhesion of immortalized human keratinocytes (HaCats) and mouse bone marrow-derived mesenchymal stem cells (BM-MSCs) in Titanium Grade 23 (Ti6Al4V ELI) discs and to describe the surface topography, roughness, and composition of dental implants (body and collar) and abutments submitted to an area-specific anodization process. HaCat cells and BM-MSCs were seeded onto discs with three different surface treatments: machined, area-specific anodization for abutments, and area-specific anodization f

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14

McGinnis, N., E. Ragnhildstveit, A. Veraksa, and W. McGinnis. "A cap ‘n’ collar protein isoform contains a selective Hox repressor function." Development 125, no. 22 (1998): 4553–64. http://dx.doi.org/10.1242/dev.125.22.4553.

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We have characterized a protein isoform (CncB) from the Drosophila cap ‘n’ collar locus that selectively represses cis-regulatory elements that are activated by the Hox protein Deformed. Of the three Cnc protein isoforms, CncB is expressed in a localized pattern in mandibular and labral cells of the head during mid-stages of embryogenesis. When CncB protein is absent or reduced, mandibular cells are homeotically transformed toward maxillary identities. This transformation is associated with persistent Deformed expression in anterior mandibular cells, since the Deformed autoactivation circuit i

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15

ARKETT, S. A., G. O. MACKIE, and R. W. MEECH. "Hair Cell Mechanoreception in the Jellyfish Aglantha Digitale." Journal of Experimental Biology 135, no. 1 (1988): 329–42. http://dx.doi.org/10.1242/jeb.135.1.329.

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1. The jellyfish Aglantha digitale is equipped with clusters of hair cells on the velum and on the tentacle bases. The cells have a central non-motile cilium surrounded by a collar of microvilli. The microvilli are graded in length, from long on one side to short on the other, giving the collar a marked polarity. The hair cells are set in specific orientations in all regions where they occur, as shown by this polarity. 2. Small mechanical displacements of the velum or tentacles in the vicinity of the hair cells evoke bursts of potentials which can be recorded extracellularly from the outer ner

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16

R. C. Singh, C. D. Singh, V. V. Singh, and U. C. Dubey. "Load Distribution on the Neck of Malvi Breed of Bullocks at Different Draft Loads." Journal of Agricultural Engineering (India) 44, no. 4 (2007): 78–80. http://dx.doi.org/10.52151/jae2007444.1304.

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The load distribution on neck of Malvi breed of bullocks was studied with local/improved Nagpuri yoke and Allahabad three-padded collar double animal harness at different draft loads. The miniature button type load cells (capacity 0 - 500 N) were mounted on three planes (left, middle and right) of the contact surface of the yoke/harness with the neck of the animals. The CIAE animal-loading car was used to apply the different draft loads to the animals. The study showed that the Nagpuri yoke was more efficient and comfortable to pull the draft loads by a pair of bullocks as the mean vertical lo

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17

Rohde, K., and NA Watson. "Ultrastructure of Sensory Receptors of an Undescribed Species of Luridae (Platyhelminthes, Rhabdocoela)." Australian Journal of Zoology 41, no. 1 (1993): 53. http://dx.doi.org/10.1071/zo9930053.

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Nine types of uniciliate sensory receptors are described from an undescribed species of Luridae: a collar receptor with a collar formed by 7-8 rods; a receptor with a long vertical and short horizontal rootlet and a thick ring-like electron-dense collar; a receptor with an approximately 2-mum-long cilium that has a narrow bent tip; a bulbous receptor with a short bulbous cilium; an intraepidermal receptor with a short cilium enclosed in an epidermal cavity; a receptor with a long cilium, short ciliary rootlet and electron-dense rod; pharyngeal receptors with long (at least 4 mum long) and shor

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KAPUSTIN, DMITRY A., EVGENIY S. GUSEV, and MAXIM S. KULIKOVSKIY. "Mallomonas papuensis sp. nov. (Chrysophyceae, Synurales), a new species from the high mountain bog pool in Papua province, Indonesia." Phytotaxa 402, no. 6 (2019): 281. http://dx.doi.org/10.11646/phytotaxa.402.6.2.

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This paper describes the new species Mallomonas papuensis from a small bog pool in Papua province, Indonesia. The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. The cells of Mallomonas papuensis are covered by three types of scales: asymmetric collar scales with forward projecting spines, rhombic body scales and oval posterior scales with short spines. The shield of all scales types lacks ornamentation. We were not able to find any specimens with bristles or isolated bristles although the small dome is visible on the collar sc

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Garcia, Galo, Aurelie Bertin, Zhu Li, et al. "Subunit-dependent modulation of septin assembly: Budding yeast septin Shs1 promotes ring and gauze formation." Journal of Cell Biology 195, no. 6 (2011): 993–1004. http://dx.doi.org/10.1083/jcb.201107123.

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Septins are conserved guanosine triphosphate–binding cytoskeletal proteins involved in membrane remodeling. In budding yeast, five mitotic septins (Cdc3, Cdc10, Cdc11, Cdc12, and Shs1), which are essential for cytokinesis, transition during bud growth from a patch to a collar, which splits into two rings in cytokinesis and is disassembled before the next cell cycle. Cdc3, Cdc10, Cdc11, and Cdc12 form an apolar octameric rod with Cdc11 at each tip, which polymerizes into straight paired filaments. We show that Shs1 substitutes for Cdc11, resulting in octameric rods that do not polymerize into f

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Raikova, Ekaterina V. "Occurrence and Ultrastructure of Collar Cells in the Stomach Gastrodermis ofPolypodium hydriformeUssov (Cnidaria)." Acta Zoologica 76, no. 1 (1995): 11–18. http://dx.doi.org/10.1111/j.1463-6395.1995.tb00977.x.

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Kishore, G. Krishna, S. Pande, and A. R. Podile. "Biological control of collar rot disease with broad-spectrum antifungal bacteria associated with groundnut." Canadian Journal of Microbiology 51, no. 2 (2005): 123–32. http://dx.doi.org/10.1139/w04-119.

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Bacteria associated with 6 habitats of groundnut were evaluated for their broad-spectrum antifungal activity and suppression of collar rot (Aspergillus niger) of groundnut. Three hundred and ninety-three strains were tested against 8 fungal pathogens of groundnut including 5 necrotrophic fungi, Aspergillus flavus, A. niger, Rhizoctonia bataticola, Rhizoctonia solani, and Sclerotium rolfsii, and 3 biotrophic fungi, Cercospora arachidicola, Phaeoisariopsis personata, and Puccinia arachidis. Pseudomonas sp. GRS 175, Pseudomonas aeruginosa GPS 21, GSE 18, GSE 19, and GSE 30, and their cell-free cu

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Maldonado Capriles, Jenaro, Jorge A. Santiago-Blay, and George O. Poinar. "Apicrenus fossilis gen. & sp. n. (Heteroptera: Reduviidae: Apiomerinae) from Dominican amber (lower Oligocene - upper Eocene)." Insect Systematics & Evolution 24, no. 2 (1993): 139–42. http://dx.doi.org/10.1163/187631293x00244.

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AbstractApicrenus fossilis, a new neotropical apiomerine fossil genus, is described and compared with annectant genera. This new genus is distinguished from other consubfamilials by the following combination of characters: anteriorly located eyes, with their margins flushing with the lateral margins of the head, anterior acetabula not visible from above, absence of collar, and presence of two triangular discal corial cells in the fore wing.

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Nosova, N. V. "Female reproductive structures of Ginkgo gomolitzkyana N. Nosova, sp. nov. from the Middle Jurassic of Angren (Uzbekistan)." Palaeobotany 3 (2012): 62–91. http://dx.doi.org/10.31111/palaeobotany/2012.3.62.

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Ovules (seeds) of Ginkgo gomolitzkyana N. Nosova, sp. nov. are described from the Angrenian Formation of the Middle Jurassic in Angren, Uzbekistan. Ovules are attached to pedicels with a collar at bases. Collar diameter of G. gomolitzkyana is similar to that of G. ginkgoidea from the Middle Jurassic of Sweden and G. apodes from the Lower Cretaceous of China. Unfortunately the epidermal structures of the two last species are not described. Epidermal patterns of the outer surface of the collar of G. gomolitzkyana are similar to those of G. yimaensis. Lack of data on the structures of the collar

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Belozerskaya, Tatiana A., Natalia N. Gessler, Elena P. Isakova, and Yulia I. Deryabina. "Neurospora crassa Light Signal Transduction Is Affected by ROS." Journal of Signal Transduction 2012 (October 20, 2012): 1–13. http://dx.doi.org/10.1155/2012/791963.

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In the ascomycete fungus Neurospora crassa blue-violet light controls the expression of genes responsible for differentiation of reproductive structures, synthesis of secondary metabolites, and the circadian oscillator activity. A major photoreceptor in Neurospora cells is WCC, a heterodimeric complex formed by the PAS-domain-containing polypeptides WC-1 and WC-2, the products of genes white collar-1 and white collar-2. The photosignal transduction is started by photochemical activity of an excited FAD molecule noncovalently bound by the LOV domain (a specialized variant of the PAS domain). Th

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Leshem, Jasmin, James O’Brien, Yoram Reiter, and Ira Pastan. "Synergistic Anti-tumor Activity of Local SS1P with Systemic CTLA-4 Blockade Causes Complete Regression of Both Injected and Un-injected Tumors in Mice." Journal of Immunology 198, no. 1_Supplement (2017): 120.3. http://dx.doi.org/10.4049/jimmunol.198.supp.120.3.

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Abstract SS1P consists of an anti-mesothelin Fv attached to Pseudomonas exotoxin A and kills tumor cells by inhibiting protein synthesis. Because of its unique mechanism of cell killing, SS1P does not inhibit the immune system like other anti-cancer drugs. Here we determined if SS1P can cooperate with anti-CTLA-4 to induce anti-tumor immunity and cause complete tumor regressions. A BALB/c breast cancer cell line was transfected with human mesothelin (66C14-M) and implanted in two different locations. SS1P was injected directly into one tumor and anti-CTLA-4 given IP. In mice treated with anti-

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Gómez Trigos, Alberto, Luis Miguel Alfonso Fernández Gutiérrez, Eugenia Muñoz Ruiz, Edgardo Gomez Torres, and Manuel Cervantes Guadarrama. "A Granular Cell Tumor on the Finger of a 7-Year-Old Boy: A Case Report." SKIN The Journal of Cutaneous Medicine 9, no. 2 (2025): 2246–50. https://doi.org/10.25251/skin.9.2.13.

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Granular cell tumor (GCT) is a rare neoplasm originating from Schwann cells and is classified into benign and malignant subtypes. This report presents the case of a 7-year-old boy with a GCT located on the third finger of his right hand. The lesion measured 1 cm × 1 cm and was characterized by a nodular appearance with a keratotic surface, well-defined borders, and a scaly collar at the base. Histopathological examination revealed the presence of large polyhedral cells with small, centrally located, hyperchromatic nuclei and cytoplasm filled with eosinophilic granules, consistent with a benign

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Frick, J. E., and E. E. Ruppert. "Primordial Germ Cells of Synaptula hydriformis (Holothuroidea; Echinodermata) Are Epithelial Flagellated-Collar Cells: Their Apical-Basal Polarity Becomes Primary Egg Polarity." Biological Bulletin 191, no. 2 (1996): 168–77. http://dx.doi.org/10.2307/1542920.

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Goldberg, Walter M., and George T. Taylor. "Cellular structure and ultrastructure of the black coralAntipathes aperta: 2. The gastrodermis and its collar cells." Journal of Morphology 202, no. 2 (1989): 255–69. http://dx.doi.org/10.1002/jmor.1052020211.

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Zaitseva, Ekaterina L., Alla Y. Tokmakova, Iya A. Voronkova, Vasily M. Petrov, Anatoly N. Tiulpakov, and Marina V. Shestakova. "Genetic parameters of wound healing in patients with neuropatic diabetic foot ulcers." Diabetes mellitus 20, no. 5 (2017): 344–49. http://dx.doi.org/10.14341/dm9291.

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Background. Tissue repair processes are impaired in diabetic foot ulcers (DFUs). Previous research has shown that glycaemic control, cytokines and growth factors play an important role in wound healing. Emerging evidence also suggests that genes play a role via their regulation of cell proliferation, collagen synthesis and granulation tissue formation. Aim. To evaluate collagen genes expression in different stages of wound healing in patients with DFUs. Materials and methods. Prospective study included four patients with neuropathic DFUs after surgical debridement. Tissue samples w

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Bahalou, M. H., B. Hemmaoui, and A. Jahidi. "Pemphigus Vulgaris: A Case Report." Scholars Journal of Medical Case Reports 13, no. 07 (2025): 1549–51. https://doi.org/10.36347/sjmcr.2025.v13i07.005.

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Pemphigus is an intraepithelial autoimmune blistering dermatosis. It often begins as a mucosal-only phase, primarily affecting the oral mucosa. When skin involvement occurs, it is typically secondary and presents as flaccid blisters on otherwise healthy skin, quickly replaced by post-bullous erosions with an epidermal collar. Nikolsky’s sign is positive in perilesional skin. Diagnosis is based on histological examination showing intraepithelial blistering with acantholytic cells and the presence of antibodies on direct immunofluorescence. Treatment relies on low-dose systemic corticosteroids c

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Abiona, J. A., O. A. Osinowo, M. O. Ozoje, D. Eruvbetine, M. O. Abioja, and O. S. Abe. "Differences in the spermatozoa and ova of two species of giant African land snails (Archachatina marginata and Achatina achatina)." Nigerian Journal of Animal Production 34, no. 2 (2021): 306–15. http://dx.doi.org/10.51791/njap.v34i2.1211.

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A comparative study of the gametes of two species of Giant African Land Snails; Archachatinu marginata and Achatina achatina was carried out. Three groups of snails weighing 80-100,101-150 and 151-250 g were used in a 3x2 factorial design, with 5 replicates, involving a total of 30 snails. Albumen gland, little hermaphrodite duct, spermotheca and ovo-testis were examined for the presence of ova and spermatozoa. The morphology of the spermatozoa and ova of both species Was studied. Ova were found in the albumen gland and ovo-testis. Spermatozou were only found in the little hermaphrodite duct.

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CORAZZA, IVAN, FRANCESCA CAPORUSSO, ENRICO GIULIANI, PIER LUCA ROSSI, DAVID BIANCHINI, and ROMANO ZANNOLI. "NUMERICAL MODELS, IN VITRO SIMULATION AND FIRST PROTOTYPE VERIFICATION OF A CONTROLLED CEREBRAL COOLING NECK COLLAR." Journal of Mechanics in Medicine and Biology 15, no. 02 (2015): 1540031. http://dx.doi.org/10.1142/s021951941540031x.

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Hypothermia is an important neuro-protective strategy for patients with acute brain damage following traumatic brain injury, stroke or sudden cardiac death. Nowadays, cooling therapy is performed inside the intensive care units with noninvasive systems applied to the body and head surface or invasively through cooling catheters inserted in the femoral vein. Full body cooling presents criticism still unresolved and a therapy localized in the brain is more effective. External systems (i.e., cool helmets) have a very low efficiency due to the need to overstep the cranial cap. For this reason we t

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Nagaraj, Satish, Ashok Rajendran, Charles E. Jackson, and Mark S. Longtine. "Role of Nucleotide Binding in Septin-Septin Interactions and Septin Localization in Saccharomyces cerevisiae." Molecular and Cellular Biology 28, no. 16 (2008): 5120–37. http://dx.doi.org/10.1128/mcb.00786-08.

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ABSTRACT Septins are a conserved family of eukaryotic GTP-binding, filament-forming proteins. In Saccharomyces cerevisiae, five septins (Cdc3p, Cdc10p, Cdc11p, Cdc12p, and Shs1p) form a complex and colocalize to the incipient bud site and as a collar of filaments at the neck of budded cells. Septins serve as a scaffold to localize septin-associated proteins involved in diverse processes and as a barrier to diffusion of membrane-associated proteins. Little is known about the role of nucleotide binding in septin function. Here, we show that Cdc3p, Cdc10p, Cdc11p, and Cdc12p all bind GTP and that

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Bentham, W., and C. Poodry. "Establishment of pattern in the developing compound eye of Drosophila." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 318–19. http://dx.doi.org/10.1017/s0424820100085897.

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Each compound eye of the fruitfly, Drosophila melanogaster, is composed of about 800 individual light gathering and sensing units called ommatidia. The structure of the ommatidium is the product of some twenty four cells has a corneal lens to focus light, eight photoreceptors to sense the light, and a collar of pigment cells to absorb stray light. There are also mechanosensory bristles associated with ommatidia over much of the eye. The ommatidia are normally organized in a hexagonal array so perfectly placed that it has been called a neurocrystallin lattice. A number of mutations have been is

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Mahmood, Aljaf, Mouhannad, Al-Hadeethi, Muazaz Azeez Hasan, and Phanom Sutthisaksopon. "An Accurate Phenotypic Study of The Foliar Epidermis for Some Species of Silene L. From Caryophyllaceae Family in Iraq." International Journal of Membrane Science and Technology 10, no. 4 (2023): 801–8. http://dx.doi.org/10.15379/ijmst.v10i4.2138.

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In the present research work, detailed micromorphological features study (investigated for foliar epidermal anatomy) for five species of the genus Silene L., belonging to the family Caryophyllaceae. One of the essential anatomical characteristics of the leaf in this genus observed two basic stomata types on both adaxial and abaxial epidermis, diacytic and anisocytic, from five species, three species have distinguished a diacytic type, exception two species S. chlorifolia and S. longipetala appeared to have both a diacytic and anisocytic, also has astrocytic crystals within epidermal cells. Als

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Parsey, M. V., and G. K. Lewis. "Actin polymerization and pseudopod reorganization accompany anti-CD3-induced growth arrest in Jurkat T cells." Journal of Immunology 151, no. 4 (1993): 1881–93. http://dx.doi.org/10.4049/jimmunol.151.4.1881.

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Abstract T cell activation via CD3/Ti linked pathways results in the polymerization and reorganization of actin. However, little is known about the morphology and temporal appearance of filamentous actin (F-actin) after activation. Similarly, little is known about the relationship between F-actin and changes in cell shape or other parameters of activation, such as the appearance of proteins newly phosphorylated on tyrosine, that occur after stimulation via the CD3/Ti complex. Accordingly, we have characterized changes in cell shape and F-actin morphology occurring in the Jurkat T cell leukemia

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LC, Prasanna, Managuli V, and Bhat KMR. "Histological Observations of the Developing Human Fetal Humerus at Different Trimesters of Pregnancy." International Journal of Anatomy and Research 12, no. 2 (2024): 9817–8923. http://dx.doi.org/10.16965/ijar.2024.115.

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Background: Although femur length is the preferred method for fetal age assessment, the humerus is sometimes the right choice, especially in the second half of pregnancy. Fetal bone development significantly impacts adult bone quality and senescent bone disorders, including osteoporosis. Purpose of the study: The present study aimed to ascertain the histological changes in the human fetal humerus across the three trimesters. After the institutional ethical committee clearance and parent consent, the study was carried out on stillborn or medically terminated human fetuses from the 10th to the 3

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Lüter, C. "The Median Tentacle of the Larva of Lingula Anatina (Brachiopoda) From Queensland, Australia." Australian Journal of Zoology 44, no. 4 (1996): 355. http://dx.doi.org/10.1071/zo9960355.

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The median tentacle of the larvae of Lingula anatina has been investigated in order to obtain information about the morphological implications of its function and its relation to the paired tentacles of the larval lophophore. The median tentacle is a larval sensory organ with apical, intraepidermal collar receptors and a basiepidermal nervous system (apical ganglion). The monociliated muscle cells in the median tentacle form a compact musculature; where cilia emanate from the single cells, small compartments surrounded by three epithelial muscle cells can be observed. The number of cavities co

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Chan, Jefferson Y., Mandy Kwong, Margaret Lo, Renee Emerson, and Frans A. Kuypers. "Reduced oxidative-stress response in red blood cells from p45NFE2-deficient mice." Blood 97, no. 7 (2001): 2151–58. http://dx.doi.org/10.1182/blood.v97.7.2151.

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Abstract p45NF-E2 is a member of the cap ‘n’ collar (CNC)-basic leucine zipper family of transcriptional activators that is expressed at high levels in various types of blood cells. Mice deficient in p45NF-E2 that were generated by gene targeting have high mortality from bleeding resulting from severe thrombocytopenia. Survivingp45nf-e2−/− adults have mild anemia characterized by hypochromic red blood cells (RBCs), reticulocytosis, and splenomegaly. Erythroid abnormalities inp45nf-e2−/− animals were previously attributed to stress erythropoiesis caused by chronic bleeding and, possibly, ineffe

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Finnigan, Gregory C., Angela Duvalyan, Elizabeth N. Liao, Aspram Sargsyan, and Jeremy Thorner. "Detection of protein–protein interactions at the septin collar inSaccharomyces cerevisiaeusing a tripartite split-GFP system." Molecular Biology of the Cell 27, no. 17 (2016): 2708–25. http://dx.doi.org/10.1091/mbc.e16-05-0337.

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Various methods can provide a readout of the physical interaction between two biomolecules. A recently described tripartite split-GFP system has the potential to report by direct visualization via a fluorescence signal the intimate association of minimally tagged proteins expressed at their endogenous level in their native cellular milieu and can capture transient or weak interactions. Here we document the utility of this tripartite split-GFP system to assess in living cells protein–protein interactions in a dynamic cytoskeletal structure—the septin collar at the yeast bud neck. We show, first

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Blair, Paul, Christoph Leib, Michael Goddard, et al. "B regulatory cells are increased in hypercholesterolaemic mice and protect from lesion development via IL-10." Thrombosis and Haemostasis 114, no. 10 (2015): 835–47. http://dx.doi.org/10.1160/th14-12-1084.

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SummaryWhilst innate B1-B cells are atheroprotective, adaptive B2-B cells are considered pro-atherogenic. Different subsets of B regulatory cells (Breg) have been described. In experimental arthritis and lupus-like disease, Breg are contained within the CD21hiCD23hiCD24hi B cell pool. The existence and role of Breg in vascular disease is not known. We sought to investigate the existence, identity and location of Breg in vascular disease. The representation of B2-B cell subsets in the spleens and lymph nodes (LNs) of Apolipoprotein E-/- (ApoE-/-) mice compared to controls was characterised by f

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Ngbea, JA, MN Agwa, DT Gyenger, T. Nyaga, OI Akpor, and RA Vhriterhire. "Histopathological Review and Distribution of Granulomatous Inflammatory Disorders in Makurdi, North Central Nigeria." JOURNAL OF RESEARCH IN BASIC AND CLINICAL SCIENCES 2, no. 2 (2021): 1–6. http://dx.doi.org/10.46912/jrbcs.107.

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Granulomatous inflammation is a pattern of chronic inflammation characterized by the presence of granulomas consisting of microscopic aggregates of macrophages transformed into epithelioid cells surrounding by a collar of lymphocytes and occasioned plasma cells. The study aimed to determine the distribution by tissue site, histological patterns of granulomatous inflammatory disorders in Benue State University Teaching Hospital (BSUTH), Makurdi over a 5-year period. This was a 5 year (March 2013 – February 2018) retrospective study of all cases diagnosed as granulomatous inflammatory disorders

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P.P, Liberski, Bratosiewicz-W±sik J., Gajdusek D.C., and Brown P. "Ultrastructural studies of experimental scrapie and Creutzfeldt-Jakob disease in hamsters. II. Astrocytic and macrophage reaction towards axonal destruction." Acta Neurobiologiae Experimentalis 62, no. 3 (2002): 131–39. http://dx.doi.org/10.55782/ane-2002-1431.

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We report here the microglial (macrophage) and astrocytic reaction in several models of transmissible spongiform encephalopathies (TSEs) or prion diseases. With the low power electron microscopy it was readily apparent that myelinated vacuoles were surrounded by cells and their processes. The latter belonged either to hyperplastic reactive astrocytes or to macrophages. Typically, reactive astrocytes exhibited cytoplasm filled with innumerable glial filaments and, occasionally, other organelles (like cilia) and abundant tortuous intercellular junctions of adhesive plaque junction type. Desmosom

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Ngbea, JA, MN Agwa, DT Gyenger, T. Nyaga, OI Akpor, and RA Vhriterhire. "Histopathological Review and Distribution of Granulomatous Inflammatory Disorders in Makurdi, North Central Nigeria." J Res Bas Clin Sci 2, no. 2 (2022): 1–6. https://doi.org/10.46912/jrbcs.107.

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<strong>ABSTRACT</strong> Granulomatous inflammation is a pattern of chronic inflammation characterized by the presence of granulomas consisting of microscopic aggregates of macrophages transformed into epithelioid cells surrounded by a collar of lymphocytes and occasioned plasma cells. The study aimed to determine the distribution by tissue site, of all the granulomatous inflammatory disorders diagnosed at Benue State University Teaching Hospital (BSUTH), Makurdi over a 5-year period. It was a retrospective review of 236 histologically confirmed cases of granulomatous lesions seen from March

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Frick, Jennifer E., and Edward E. Ruppert. "Primordial germ cells and oocytes of Branchiostoma virginiae (Cephalochordata, Acrania) are flagellated epithelial cells: relationship between epithelial and primary egg polarity." Zygote 5, no. 2 (1997): 139–51. http://dx.doi.org/10.1017/s0967199400003816.

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SummaryPrimordial germ cells (PGCs) are described from the gonad of c. 2 cm juvenile Branchiostoma virginiae; early oocytes (c. 10 μm) and enlarging, previtellogenic oocytes (c. 35 μm) are described from the ovary of c. 5 cm adults. The germinal epithelium of the juvenile gonad and adult ovary is composed of both germinal and somatic cells. In the juvenile, somatic cells retain contact with the basal lamina of the germinal epithelium though their perikarya may be displaced towards the lumen; the germinal epithelium is, therefore, a simple but pseudostratified epithelium. In the adult ovary, so

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Ortiz, Emiro, Marisol Cruz, Luz Marina Melgarejo, Xavier Marquínez, and Lilliana Hoyos-Carvajal. "Histopathological features of infections caused by Fusarium oxysporum and F. solani in purple passionfruit plants (Passiflora edulis Sims)." Summa Phytopathologica 40, no. 2 (2014): 134–40. http://dx.doi.org/10.1590/0100-5405/1910.

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The purple passionfruit plant, Passifloraedulis Sims, ranks second in fruit exportation in Colombia, and its main destination is the European market. However, its production is affected by several diseases, including fusariosis. This paper presents the histopathological features of different tissues affected by the pathogens Fusarium oxysporum and Fusarium solani. Both microorganisms produce similar responses on the plant: colonization of xylem vessels by hyphae and microconidia, hypertrophy and hyperplasia of the cambium, xylem and phloem; destruction of xylem fibers and amyloplasts in parenc

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Reale, Marcella, Paolo Boscolo, Veronica Bellante, et al. "Daily intake of Lactobacillus casei Shirota increases natural killer cell activity in smokers." British Journal of Nutrition 108, no. 2 (2011): 308–14. http://dx.doi.org/10.1017/s0007114511005630.

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Dietary probiotics supplementation exerts beneficial health effects. Since cigarette smoking reduces natural killer (NK) activity, we evaluated the effect of Lactobacillus casei Shirota (LcS) intake on NK cytotoxic activity in male smokers. The double-blind, placebo-controlled, randomised study was conducted on seventy-two healthy Italian blue-collar male smokers randomly divided for daily intake of LcS powder or placebo. Before and after 3 weeks of intake, peripheral blood mononuclear cells were isolated and NK activity and CD16+ cells' number were assessed. Daily LcS intake for 3 weeks signi

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Pan, Yiou, Xiaochun Zeng, Shuyuan Wen, Xuemei Liu, and Qingli Shang. "Characterization of the Cap ‘n’ Collar Isoform C gene in Spodoptera frugiperda and its Association with Superoxide Dismutase." Insects 11, no. 4 (2020): 221. http://dx.doi.org/10.3390/insects11040221.

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Nuclear factor erythroid 2 related factor 2 (Nrf2) belongs to the cap ‘n’ collar basic region leucine zipper (CNC-bZIP) transcription factor family, and is activated by diverse oxidants, pro-oxidants, antioxidants, and chemo-preventive agents. Transcriptional regulation of a battery of detoxifying and antioxidant genes by Nrf2 has been shown to be important for protection against oxidative stress or chemically-induced cellular damages. In our research, we cloned the full length CncC gene from the Spodoptera frugiperda, named as SfCncC. The cDNA of the SfCncC consists of 2652 nucleotides that i

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Liu, Tzu-Yu, Michael W. Hughes, Hao-Ven Wang, Wei-Cheng Yang, Cheng-Ming Chuong, and Ping Wu. "Molecular and Cellular Characterization of Avian Reticulate Scales Implies the Evo–Devo Novelty of Skin Appendages in Foot Sole." Journal of Developmental Biology 11, no. 3 (2023): 30. http://dx.doi.org/10.3390/jdb11030030.

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Among amniotic skin appendages, avian feathers and mammalian hairs protect their stem cells in specialized niches, located in the collar bulge and hair bulge, respectively. In chickens and alligators, label retaining cells (LRCs), which are putative stem cells, are distributed in the hinge regions of both avian scutate scales and reptilian overlapping scales. These LRCs take part in scale regeneration. However, it is unknown whether other types of scales, for example, symmetrically shaped reticulate scales, have a similar way of preserving their stem cells. In particular, the foot sole represe

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Bayram, Özlem Sarikaya, and Özgür Bayram. "An Anatomy of Fungal Eye: Fungal Photoreceptors and Signalling Mechanisms." Journal of Fungi 9, no. 5 (2023): 591. http://dx.doi.org/10.3390/jof9050591.

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Organisms have developed different features to capture or sense sunlight. Vertebrates have evolved specialized organs (eyes) which contain a variety of photosensor cells that help them to see the light to aid orientation. Opsins are major photoreceptors found in the vertebrate eye. Fungi, with more than five million estimated members, represent an important clade of living organisms which have important functions for the sustainability of life on our planet. Light signalling regulates a range of developmental and metabolic processes including asexual sporulation, sexual fruit body formation, p

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