Academic literature on the topic 'YC 2525'
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Journal articles on the topic "YC 2525":
Quyen, Dang Hoang. "ARBUSCULAR MICORRHIZAL FUNGI ASSOCIATION IN TWO COFFEE FARMS WITH DIFFERENT CULTIVATION AT LAM DONG." Vietnam Journal of Science and Technology 55, no. 1A (April 24, 2018): 1. http://dx.doi.org/10.15625/2525-2518/55/1a/12376.
Jin, Baofang, Dalin Sun, Weihang Dong, Bing Chen, Weimin Deng, Bin Cai, Yugui Cui, et al. "Yangjing Capsule Can Improve the Function of the Testicular Angiogenesis through Activating VEGFA/eNOS Signaling Pathway." Evidence-Based Complementary and Alternative Medicine 2020 (April 25, 2020): 1–8. http://dx.doi.org/10.1155/2020/1957267.
Dissertations / Theses on the topic "YC 2525":
Santos, Silva Patricia Alexandra. "Genetic and epigenetic profiles of elderly AML." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20088.
Despite advances in the characterization of molecular alterations in younger acute myeloid leukemia (AML) patients, comprehensive studies in elderly AML are lacking. Thus, we investigated genetic and epigenetic alterations and probed for specific signatures to understand the unfavorable outcomes of elderly AML. We studied 93 AML patients (65 to 90 years old), enrolled in the Study Alliance Leukemia registry (SAL). To capture a broad spectrum of alterations, we sequenced 555 genes on an Illumina HiSeq2000 platform and investigated DNA methylation profiles using the Illumina 450K array. Overall, we detected 814 molecular alterations in 281 genes, with a median of 7 genes mutated per patient. Particularly high mutation frequencies were identified for DNMT3A (33%), TET2 (24%), SRSF2 (23%) and ASXL1 (21%). We observed frequent alterations in epigenetic regulators (85%) and in splicing factors (38%). Notably, SAL elderly AML patients with mutations in DNMT3A or DNA repair genes (in absence of mutations in NPM1 or splicing factors) had an inferior survival of only 9 months (compared to 17 months for the remaining patients). In addition, for the analysis of elderly AML DNA methylation, we integrated the SAL cohort with TCGA methylation data for comparisons of methylation levels to younger patients. A distinct DNA methylation profile was observed in older AML patients, which correlated with the presence of mutations in IDH1/2, RUNX1 and ASXL1 and epigenetic similarities with TP53/Complex samples. The differential methylated regions of elderly AML (compared to younger AML samples) were shown to overlap genes from several pathways that are hallmarks of both age and cancer. In conclusion, we unraveled distinct patterns of genetic alterations and correlated specific epigenetic profiles of elderly AML to high rate mutated epigenetic regulators. This molecular categorization underscored the distinct biology and the need for specific therapeutic approaches in elderly AML.
Na, Il-Kang. "Zur Behandlung der chronischen myeloischen Leukämie mit dem selektiven bcr-abl Tyrosinkinaseinhibitor Imatinib." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2005. http://dx.doi.org/10.18452/15262.
BACKROUND: The selective tyrosine kinase inhibitor imatinib inhibits growth of bcr/abl positive cells and, thus, has become a novel therapeutic option for the treatment of Ph+ leukaemic patients. Various mutations within the abl sequence have been described that prevent adequate imatinib binding to bcr/abl resulting in cellular resistance of CML cells. METHODS: We investigated 69 CML patients under treatment with imatinib as part of an ongoing clinical trial. At recruitment 37 patients were in chronic phase, 21 patients in accelerated phase and 11 patients in blast crisis. Bcr/abl, WT1, MDR1and AGP RNA transcripts were quantified in peripheral leucocytes by real time PCR. AGP protein levels in plasma were measured by turbidimetric analysis. By combining peptide nucleic acid (PNA) based DNA clamping with a fluorescence hybridisation probe assay we developed a new and highly sensitive technique for the detection of known mutations within the bcr/abl kinase domain. RESULTS: 1. Our results demonstrate efficacy of imatinib on the haematological level in accordance with previously published data. 2. Complete molecular remission could be achieved in one patient. 3. We could effectively enhance the detection sensitivity (0,2%) for the BCR/ABL mutations Thr315Ile, Glu255Lys and Tyr253His. In one case the Gly255Lys mutation was detectable before treatment. CONCLUSION: Bcr/abl and WT1 mRNA are predictive marker in the treatment of CML. Our investigation could not confirm any relation between MDR1 mRNA nor AGP mRNA and a resistance to imatinib. By the PNA clamping assay pre-existing and evolving bcr/abl mutations associated with an unfavorable prognosis could be safely detected. This may facilitate risk stratification in CML and may serve as a model for individualized molecular monitoring and therapeutic strategies in other malignant diseases.
Hönemann, Dirk. "Die Bedeutung des Knochenmarkmikromilieus für Wachstum und Medikamentenresistenz des multiplen Myeloms unter besonderer Berücksichtigung von Interleukin-6." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2005. http://dx.doi.org/10.18452/15338.
The bone marrow microenvironment produces a number of different survival factors that are important for the malignant growth and drug resistance of multiple myeloma (MM) cells. One of the main factors reported to be essential for survival and growth of MM cells in some experimental systems is interleukin-6 (IL-6). Therefore, the development and testing of substances that interfere with IL-6 or IL-6 receptor (IL-6R) function might have a potential therapeutic value for the treatment of multiple myeloma. In this work the effect of the IL-6 receptor antagonist SANT7 on growth and survival of the IL-6 dependent MM cell lines INA-6 as well as primary MM cells in the presence or absence of bone marrow stromal cells (BMSC) was analyzed. Of particular interest was the question whether SANT7 might enhance the growth inhibitory effects of dexamethasone (Dex) and all-trans retinoic acid (ATRA). None of the drugs, when tested as a single substance, including SANT7, induced major growth inhibition if MM cells were co-cultured with primary human BMSCs. However, if Dex and ATRA were given in combination with SANT7 a strong growth inhibition was achieved in INA-6 and primary MM cells. This effect is due to cell cycle arrest and induction of apoptosis.
Huber, Steffen. "Optimierung der koronaren Plaquedarstellung in der Magnetresonanztomographie." Doctoral thesis, [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974417653.
Schmachtenberg, Anna-Juliane. "Differentielle Expression des Tyrosin-Kinoms bei akuter lymphatischer Leukämie des erwachsenen Alters." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19369.
Tyrosine kinases (TK) are key regulators of cellular signal transduction and affect cell cycle, cell survival, apoptosis, proliferation and differentiation. Dysregulation of TK activity contributes to the development of leukemia and other malignancies. So are 25 % of adult acute lymphoblastic leukemias (ALL) driven by the BCR-ABL1 translocation. Despite intensive therapy, the 5-year overall survival of adult patients with ALL is about 50 %. In contrast to conventional chemotherapeutic agents, the use of specific-acting TK-inhibitors offers an individualized therapeutic approach with less side-effects and a better outcome. To identify possible new therapeutic targets, a systematic survey of expression changes of the entire tyrosine kinome was carried out. A variety of different tyrosine kinases showed great changes in the expression profile of ALL-cells. Part of these expression changes can be attributed to a changed methylation profile in adult ALL. EPHA7 and PTK2 are potential markers for B-line ALL and the NTRK3, ERBB4 and ZAP70 for T-lines ALL. The interindividual varying expression of the tyrosine kinases EPHA3, EPHB3, KIT, ZAP70 and PDGFRB presumably allows a more precise risk classification. In particular, the tyrosine kinases ABL1, DDR1, EPHA7, FGFR1, ERBB4, FLT1, FLT3, FLT4, LCK, LTK, PTK2, PTK2B, PTK7, SRC, TEC and TYK2 are promising therapeutic targets, which promotes proliferation and/or inhibits apoptosis in the hematopoietic system. A proliferation promoting effect of overexpressed FLT4 could be shown for the first time. The variety of changes in the tyrosine kinase expression seems to play an important role in the development of ALL and TK could be promising new therapeutic targets.