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2 المنشورات
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0 الصور
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0 الفيديوهات
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Female
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28/08/1988
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متابَع بواسطة 0 أشخاص
التحديثات الأخيرة
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As a member of the chromosomal passenger complex, CDCA8 (cell division cycle associated 8) plays an important role in human mitosis, but its roles in human meiosis are unknown. Here, we show that CDCA8 expression is increased and its encoded protein has dynamic localization in human oocytes from germinal vesicle breakdown (GVBD) to metaphase Ⅱ (MⅡ), and that there are multipolar spindles, disordered chromosomes, and that microtubule assembly is affected after CDCA8 RNA interference (RNAi) in GV-stage oocytes. The GVBD and polar body extrusion (PBE) rates were not affected following CDCA8 depletion, but the PBE time was extended. There was no statistical difference between CDCA8 expression of oocytes from older and younger women, but the first polar body from older women was prone to chromosome abnormalities, and oocytes with such abnormalities had lower CDCA8 expression than oocytes with normal polar bodies. These results indicate that CDCA8 is associated with bipolar spindle formation, chromosome segregation, PBE during human oocyte meiosis, and that it may affect the incidence of aneuploidy embryos in older women. V.BACKGROUND Uncoupling protein 1 (UCP1) has been reported to be associated with type 2 diabetes mellitus (T2DM) in different populations, however, little is reported in Chinese population. The present study aimed to explore the association between some polymorphisms of UCP1 with T2DM and the interactions between UCP1 and physical activity/sedentary behavior (PA/SB) lifestyle in Chinese population. METHODS Three polymorphisms (rs1472268, rs3811790 and rs3811791) were genotyped in 929 T2DM patients and 1044 nondiabetic controls. https://www.selleckchem.com/products/idasanutlin-rg-7388.html The data of PA and SB were acquired. Logistic regression and linear regression were conducted to assess the association of UCP1 and T2DM and related traits. RESULTS The CC genotype of rs3811791 was significantly associated with an increased risk of T2DM [odds ratio (OR) = 1.42, P = 0.042] and a higher level of triglyceride (TG) (β = 0.048, P = 0.034). This association still existed in the group of SB ≥ 3 h/d (OR = 1.66, P = 0.009) and the group of PA ≥ 150 min/week and SB ≥ 3 h/d (OR = 1.60, P = 0.034). In the group of PA less then 150 min/week and SB less then 3h/d, CC genotype was associated with a higher level of homeostatic model assessment of insulin resistance (HOMA-IR) index, and in the group of PA less then 150 min/week and SB ≥ 3 h/d, CC genotype was associated with increased level of TG and decreased high-density lipoprotein cholesterol (HDL-C). CONCLUSION This study suggests that rs3811791 of UCP1 may be associated with T2DM and TG. Moreover, we demonstrate that SB interacted with rs3811791 of UCP1 was associated with T2DM, and PA interacted with rs3811791 of UCP1 was associated with the level of HOMA-IR, HDL-C, and TG. Early larval developmental stages of fish are highly susceptible to opportunistic pathogens until the complete maturation of the lymphoid organs. Knowledge of the expression pattern of important markers of adaptive immune system during the ontogenetic development is essential before vaccinating the fish. In the present study, Pterophyllum scalare (angelfish) was taken to explore the relative expression profile of developmental markers of adaptive immunity, recombination activating gene-2 (RAG-2) and immunoglobulin M (IgM). The fishes were bred and early developmental stages (0-45 days post-hatched) were used to assess the expression profile. The genes, RAG-2 and IgM were cloned and sequenced with the base pair lengths of 1958 bp and 225 bp respectively. The mRNA expression of RAG-2 appeared at insignificant level at the first day of hatching, but the expression was significantly increased from 24 dph (days post-hatching) onwards and reached its peak at 27 dph. The results proved that the maturation of lymphoid organs was completed at 27 dph as the respective protein is involved in the V(D)J recombination, important for the maturation of lymphoid organs. A similar trend was also observed in the mRNA transcript levels of IgM gene and a significantly high expression was detected from 27 dph onwards. The present study suggested that the suitable time for vaccination in P. scalare could be taken at 27 dph, as the maturation and development of lymphoid organs is completed thus helps in stimulating the adaptive response of immunity against any pathogen. The lamina cribrosa (LC) in glaucoma is with augmented production of extracellular matrix proteins (ECM) and connective tissue fibrosis. Fundamental pathological mechanisms for this fibrosis comprise fibrotic growth factors and oxidative stress. Transient receptor potential canonical channels (TRPC) channels play a key role in ECM fibrosis. Here, we study TRPC expression in glaucomatous LC cells, and investigate the role of TRPC in oxidative stress induced-profibrotic ECM gene transcription and cell proliferation in normal LC cells. Age-matched human LC cells (normal, n = 3 donors; glaucoma, n = 3 donors) were used. Hydrogen peroxide (H2O2, 100 μM), was used to induce oxidative stress in LC cells in the presence or absence of the pan TRPC inhibitor SKF96365 (10 μM) or knockdown of TRPC1/6 with siRNA. After treatments, ECM gene transcription, LC cell viability and proliferation and the phosphorylation of the transcription factor NFATc3, were measured using real time RT-PCR, colorimetric cell counting with the methyl-thiazolyl tetrazolium salt (MTS) assay, and Western immunoblotting, respectively. Results showed that TRPC1/C6 transcript and protein expression levels were significantly (p less then 0.05) enhanced in glaucoma LC cells. Both SKF96365 and siRNA-TRPC1/C6 treatments significantly reduced the oxidative stress induced-ECM gene expression (transforming growth factor-β1 (TGFβ1), alpha smooth muscle actin (α-SMA), and collagen type 1A1 (Col1A1)), and cell proliferation in normal and glaucoma LC cells. Also, SKF96365 treatment inhibited the H2O2-induced NFATc3 protein dephosphorylation in LC cells. In conclusion, TRPC1/C6 expression is enhanced in glaucoma LC cells. These channels may contribute to oxidative stress-induced ECM gene transcription and cell proliferation in normal and glaucoma LC cells through Ca2+-NFATc3 signaling pathway mechanism. TRPC1 and TRPC6 channels could be important therapeutic targets to prevent ECM remodeling and fibrosis development in glaucoma optic neuropathy.
As a member of the chromosomal passenger complex, CDCA8 (cell division cycle associated 8) plays an important role in human mitosis, but its roles in human meiosis are unknown. Here, we show that CDCA8 expression is increased and its encoded protein has dynamic localization in human oocytes from germinal vesicle breakdown (GVBD) to metaphase Ⅱ (MⅡ), and that there are multipolar spindles, disordered chromosomes, and that microtubule assembly is affected after CDCA8 RNA interference (RNAi) in GV-stage oocytes. The GVBD and polar body extrusion (PBE) rates were not affected following CDCA8 depletion, but the PBE time was extended. There was no statistical difference between CDCA8 expression of oocytes from older and younger women, but the first polar body from older women was prone to chromosome abnormalities, and oocytes with such abnormalities had lower CDCA8 expression than oocytes with normal polar bodies. These results indicate that CDCA8 is associated with bipolar spindle formation, chromosome segregation, PBE during human oocyte meiosis, and that it may affect the incidence of aneuploidy embryos in older women. V.BACKGROUND Uncoupling protein 1 (UCP1) has been reported to be associated with type 2 diabetes mellitus (T2DM) in different populations, however, little is reported in Chinese population. The present study aimed to explore the association between some polymorphisms of UCP1 with T2DM and the interactions between UCP1 and physical activity/sedentary behavior (PA/SB) lifestyle in Chinese population. METHODS Three polymorphisms (rs1472268, rs3811790 and rs3811791) were genotyped in 929 T2DM patients and 1044 nondiabetic controls. https://www.selleckchem.com/products/idasanutlin-rg-7388.html The data of PA and SB were acquired. Logistic regression and linear regression were conducted to assess the association of UCP1 and T2DM and related traits. RESULTS The CC genotype of rs3811791 was significantly associated with an increased risk of T2DM [odds ratio (OR) = 1.42, P = 0.042] and a higher level of triglyceride (TG) (β = 0.048, P = 0.034). This association still existed in the group of SB ≥ 3 h/d (OR = 1.66, P = 0.009) and the group of PA ≥ 150 min/week and SB ≥ 3 h/d (OR = 1.60, P = 0.034). In the group of PA less then 150 min/week and SB less then 3h/d, CC genotype was associated with a higher level of homeostatic model assessment of insulin resistance (HOMA-IR) index, and in the group of PA less then 150 min/week and SB ≥ 3 h/d, CC genotype was associated with increased level of TG and decreased high-density lipoprotein cholesterol (HDL-C). CONCLUSION This study suggests that rs3811791 of UCP1 may be associated with T2DM and TG. Moreover, we demonstrate that SB interacted with rs3811791 of UCP1 was associated with T2DM, and PA interacted with rs3811791 of UCP1 was associated with the level of HOMA-IR, HDL-C, and TG. Early larval developmental stages of fish are highly susceptible to opportunistic pathogens until the complete maturation of the lymphoid organs. Knowledge of the expression pattern of important markers of adaptive immune system during the ontogenetic development is essential before vaccinating the fish. In the present study, Pterophyllum scalare (angelfish) was taken to explore the relative expression profile of developmental markers of adaptive immunity, recombination activating gene-2 (RAG-2) and immunoglobulin M (IgM). The fishes were bred and early developmental stages (0-45 days post-hatched) were used to assess the expression profile. The genes, RAG-2 and IgM were cloned and sequenced with the base pair lengths of 1958 bp and 225 bp respectively. The mRNA expression of RAG-2 appeared at insignificant level at the first day of hatching, but the expression was significantly increased from 24 dph (days post-hatching) onwards and reached its peak at 27 dph. The results proved that the maturation of lymphoid organs was completed at 27 dph as the respective protein is involved in the V(D)J recombination, important for the maturation of lymphoid organs. A similar trend was also observed in the mRNA transcript levels of IgM gene and a significantly high expression was detected from 27 dph onwards. The present study suggested that the suitable time for vaccination in P. scalare could be taken at 27 dph, as the maturation and development of lymphoid organs is completed thus helps in stimulating the adaptive response of immunity against any pathogen. The lamina cribrosa (LC) in glaucoma is with augmented production of extracellular matrix proteins (ECM) and connective tissue fibrosis. Fundamental pathological mechanisms for this fibrosis comprise fibrotic growth factors and oxidative stress. Transient receptor potential canonical channels (TRPC) channels play a key role in ECM fibrosis. Here, we study TRPC expression in glaucomatous LC cells, and investigate the role of TRPC in oxidative stress induced-profibrotic ECM gene transcription and cell proliferation in normal LC cells. Age-matched human LC cells (normal, n = 3 donors; glaucoma, n = 3 donors) were used. Hydrogen peroxide (H2O2, 100 μM), was used to induce oxidative stress in LC cells in the presence or absence of the pan TRPC inhibitor SKF96365 (10 μM) or knockdown of TRPC1/6 with siRNA. After treatments, ECM gene transcription, LC cell viability and proliferation and the phosphorylation of the transcription factor NFATc3, were measured using real time RT-PCR, colorimetric cell counting with the methyl-thiazolyl tetrazolium salt (MTS) assay, and Western immunoblotting, respectively. Results showed that TRPC1/C6 transcript and protein expression levels were significantly (p less then 0.05) enhanced in glaucoma LC cells. Both SKF96365 and siRNA-TRPC1/C6 treatments significantly reduced the oxidative stress induced-ECM gene expression (transforming growth factor-β1 (TGFβ1), alpha smooth muscle actin (α-SMA), and collagen type 1A1 (Col1A1)), and cell proliferation in normal and glaucoma LC cells. Also, SKF96365 treatment inhibited the H2O2-induced NFATc3 protein dephosphorylation in LC cells. In conclusion, TRPC1/C6 expression is enhanced in glaucoma LC cells. These channels may contribute to oxidative stress-induced ECM gene transcription and cell proliferation in normal and glaucoma LC cells through Ca2+-NFATc3 signaling pathway mechanism. TRPC1 and TRPC6 channels could be important therapeutic targets to prevent ECM remodeling and fibrosis development in glaucoma optic neuropathy.0 التعليقات 0 المشاركات 33 مشاهدة 0 معاينةالرجاء تسجيل الدخول , للأعجاب والمشاركة والتعليق على هذا! -
a safe and effective method for access closure with sheath diameters up to and including 16 french. OBJECTIVE The aim of this study is to report our mid-term results of percutaneous arteriovenous fistula (pAVF) creation using the Ellipsys device and present technical recommendations and our algorithm of pAVF maintenance. METHODS A single center comprehensive database of all consecutive pre-dialysis and end-stage renal disease patients that had a pAVF creation with the Ellipsys® device was reviewed retrospectively. Study endpoints included technical success, maturation, functional patency and required interventions. RESULTS Between May 2017 and July 2019, 234 patients (mean age 64, 148 males - 63%) had a pAVF created. Technical success was achieved in 232 individuals (99%) and average duration of the procedure was 15 minutes (7-35minutes). Average follow up was 252 days (range 83-696). One year, primary, primary assisted and secondary patency were 54%, 85% and 96%, respectively. Average pAVF flow was 923ml/min (range 425-1440). There were no significant adverse events related to the procedure. Only 3 patients (1%) required a later conversion of the pAVF anastomosis to a surgical fistula. Twenty-four (10%) patients required superficialization of deep outflow veins due to difficult cannulation. Average maturation time was 4 weeks (range 1-12 weeks). Fourteen patients (6%) had early ( less then 2 weeks after creation) cannulation of their pAVF. CONCLUSIONS The Ellipsys® pAVF device allows for the rapid and safe creation of a reliable autogenous access. Rates of technical success, patency and maturation were excellent. For patients unsuited for a distal radio-cephalic arteriovenous fistula, it should be considered the next preferred access option. INTRODUCTION Ocular radiation exposure from fluoroscopically-guided-interventions (FGIs) can cause cataracts. Standard lead eyewear may not significantly reduce eye radiation dose, as the majority of scattered radiation penetrates the operator's eye obliquely. Our aim was to evaluate the efficacy of standard leaded eyewear and a customized eyewear design in lowering eye radiation dose to vascular surgeons. METHODS The attenuating efficacy of three forms of leaded eyewear (standard eyewear, eyewear with built-in leaded side-shields, and our modified eyewear) were tested in both a simulated setting and clinical practice. The modified design consisted of safety eyewear with 0.75 mm of added lead shielding attached to the lateral and inferior borders of the eyewear frame to attenuate oblique radiation. We performed simulated experiments using an anthropomorphic head phantom (ATOM model-701CIRS, Norfolk, VA) positioned to represent a primary operator performing right femoral access. Optically stimulated, luminescear led to a 62% left ocular radiation dose reduction (p less then .0001). CONCLUSIONS Standard lead-equivalent glasses are ineffective at reducing ocular radiation dose during FGIs. Eyewear modification with lateral and inferior lead shielding molded to the operator's face significantly decreases eye radiation exposure to the eye closest to the x-ray source. BACKGROUND The optimal strategy for revascularization in chronic limb-threatening ischemia (CLTI) is not yet completely known and is still under debate. Endovascular treatment methods predominate despite limited evidence for their advantage. In this concurrent, prospective observational cohort study we investigated outcomes after open and endovascular revascularization in the femoropoliteal segment due to CLTI. METHOD Between March 2011 and January 2015, 190 patients presenting with CLTI and the principal target lesion in the superficial femoral and/or popliteal segment underwent endovascular intervention (n=117) or bypass surgery (n=73) and were followed prospectively. The choice of revascularization technique was based on international and local guidelines. All patients were followed for two years. The primary endpoint was amputation-free survival assessed with Kaplan-Meier estimates, while secondary endpoints included CLTI symptom alleviation rates and re-intervention rates. A Cox proportional hazard regregher amputation-free survival than endovascular intervention, a finding that could not only be explained by differences in case mix. More patients who had bypass surgery were free from CLTI symptoms at both one and two years after revascularization. Re-interventions to maintain patency were equally common after bypass and endovascular intervention. ETHNOPHARMACOLOGICAL RELEVANCE Pinellia pedatisecta Schott extract (PE) is generated from Pinellia pedatisecta Schott, a traditional Chinese medicinal plant. PE suppresses cervical tumor growth and exhibits effects on dendritic cells (DCs) that lead to modulation of antitumor CD4+ and CD8+ responses. AIMS To explore the underlying mechanisms by which PE modulates tumor-associated dendritic cell (TADC) activation and function. METHODS DCs and TADCs were generated from murine bone marrow and exposed to PE solutions at different doses, as well as to repeated doses separated at different time intervals. Quantitative PCR, Western blot analysis, flow cytometry, and gene silencing were used to analyze the modulatory effects of PE on the SOCS1/JAK2/STAT pathways. Furthermore, we separated human cervical tumor-infiltrated DCs (TIDCs) and conducted an ex-vivo stimulation model to observe the effect of PE. For phenotypic analysis of cultured DCs and ex vivo human specimens, we used flow cytometry to detect the molecularreatment via the blockade of SOCS1 signaling in DCs. V.ETHNOPHARMACOLOGICAL RELEVANCE Yixin Ningshen tablet is a CFDA-approved TCM formula for treating depression clinically. However, little is known about its active compounds and related potential target proteins, so far, no researches have been performed to investigate its mechanism of action for the treatment of depression. https://www.selleckchem.com/products/AZD5438.html AIM OF THE STUDY Here we develop an original bioinformatics pipeline composed of text mining tools, database querying and systems biology combinatorial analysis, which is applied to rapidly explore the mechanism of action of Yixin Ningshen tablet in treating depression. MATERIALS AND METHODS Text mining and database query were applied to identify active compounds in Yixin Ningshen tablet for the treatment of depression. Then SwissTargetPrediction was used to predict their potential target proteins. PubMed was retrieved to summarize known depression related systems biology results. Ingenuity Pathway Analysis (IPA) tools and STRING were applied to construct a compound-target protein-gene protein-differential protein-differential metabolite network with the integration of compound-target interaction and systems biology results, as well as enrich the target proteins related pathways.
a safe and effective method for access closure with sheath diameters up to and including 16 french. OBJECTIVE The aim of this study is to report our mid-term results of percutaneous arteriovenous fistula (pAVF) creation using the Ellipsys device and present technical recommendations and our algorithm of pAVF maintenance. METHODS A single center comprehensive database of all consecutive pre-dialysis and end-stage renal disease patients that had a pAVF creation with the Ellipsys® device was reviewed retrospectively. Study endpoints included technical success, maturation, functional patency and required interventions. RESULTS Between May 2017 and July 2019, 234 patients (mean age 64, 148 males - 63%) had a pAVF created. Technical success was achieved in 232 individuals (99%) and average duration of the procedure was 15 minutes (7-35minutes). Average follow up was 252 days (range 83-696). One year, primary, primary assisted and secondary patency were 54%, 85% and 96%, respectively. Average pAVF flow was 923ml/min (range 425-1440). There were no significant adverse events related to the procedure. Only 3 patients (1%) required a later conversion of the pAVF anastomosis to a surgical fistula. Twenty-four (10%) patients required superficialization of deep outflow veins due to difficult cannulation. Average maturation time was 4 weeks (range 1-12 weeks). Fourteen patients (6%) had early ( less then 2 weeks after creation) cannulation of their pAVF. CONCLUSIONS The Ellipsys® pAVF device allows for the rapid and safe creation of a reliable autogenous access. Rates of technical success, patency and maturation were excellent. For patients unsuited for a distal radio-cephalic arteriovenous fistula, it should be considered the next preferred access option. INTRODUCTION Ocular radiation exposure from fluoroscopically-guided-interventions (FGIs) can cause cataracts. Standard lead eyewear may not significantly reduce eye radiation dose, as the majority of scattered radiation penetrates the operator's eye obliquely. Our aim was to evaluate the efficacy of standard leaded eyewear and a customized eyewear design in lowering eye radiation dose to vascular surgeons. METHODS The attenuating efficacy of three forms of leaded eyewear (standard eyewear, eyewear with built-in leaded side-shields, and our modified eyewear) were tested in both a simulated setting and clinical practice. The modified design consisted of safety eyewear with 0.75 mm of added lead shielding attached to the lateral and inferior borders of the eyewear frame to attenuate oblique radiation. We performed simulated experiments using an anthropomorphic head phantom (ATOM model-701CIRS, Norfolk, VA) positioned to represent a primary operator performing right femoral access. Optically stimulated, luminescear led to a 62% left ocular radiation dose reduction (p less then .0001). CONCLUSIONS Standard lead-equivalent glasses are ineffective at reducing ocular radiation dose during FGIs. Eyewear modification with lateral and inferior lead shielding molded to the operator's face significantly decreases eye radiation exposure to the eye closest to the x-ray source. BACKGROUND The optimal strategy for revascularization in chronic limb-threatening ischemia (CLTI) is not yet completely known and is still under debate. Endovascular treatment methods predominate despite limited evidence for their advantage. In this concurrent, prospective observational cohort study we investigated outcomes after open and endovascular revascularization in the femoropoliteal segment due to CLTI. METHOD Between March 2011 and January 2015, 190 patients presenting with CLTI and the principal target lesion in the superficial femoral and/or popliteal segment underwent endovascular intervention (n=117) or bypass surgery (n=73) and were followed prospectively. The choice of revascularization technique was based on international and local guidelines. All patients were followed for two years. The primary endpoint was amputation-free survival assessed with Kaplan-Meier estimates, while secondary endpoints included CLTI symptom alleviation rates and re-intervention rates. A Cox proportional hazard regregher amputation-free survival than endovascular intervention, a finding that could not only be explained by differences in case mix. More patients who had bypass surgery were free from CLTI symptoms at both one and two years after revascularization. Re-interventions to maintain patency were equally common after bypass and endovascular intervention. ETHNOPHARMACOLOGICAL RELEVANCE Pinellia pedatisecta Schott extract (PE) is generated from Pinellia pedatisecta Schott, a traditional Chinese medicinal plant. PE suppresses cervical tumor growth and exhibits effects on dendritic cells (DCs) that lead to modulation of antitumor CD4+ and CD8+ responses. AIMS To explore the underlying mechanisms by which PE modulates tumor-associated dendritic cell (TADC) activation and function. METHODS DCs and TADCs were generated from murine bone marrow and exposed to PE solutions at different doses, as well as to repeated doses separated at different time intervals. Quantitative PCR, Western blot analysis, flow cytometry, and gene silencing were used to analyze the modulatory effects of PE on the SOCS1/JAK2/STAT pathways. Furthermore, we separated human cervical tumor-infiltrated DCs (TIDCs) and conducted an ex-vivo stimulation model to observe the effect of PE. For phenotypic analysis of cultured DCs and ex vivo human specimens, we used flow cytometry to detect the molecularreatment via the blockade of SOCS1 signaling in DCs. V.ETHNOPHARMACOLOGICAL RELEVANCE Yixin Ningshen tablet is a CFDA-approved TCM formula for treating depression clinically. However, little is known about its active compounds and related potential target proteins, so far, no researches have been performed to investigate its mechanism of action for the treatment of depression. https://www.selleckchem.com/products/AZD5438.html AIM OF THE STUDY Here we develop an original bioinformatics pipeline composed of text mining tools, database querying and systems biology combinatorial analysis, which is applied to rapidly explore the mechanism of action of Yixin Ningshen tablet in treating depression. MATERIALS AND METHODS Text mining and database query were applied to identify active compounds in Yixin Ningshen tablet for the treatment of depression. Then SwissTargetPrediction was used to predict their potential target proteins. PubMed was retrieved to summarize known depression related systems biology results. Ingenuity Pathway Analysis (IPA) tools and STRING were applied to construct a compound-target protein-gene protein-differential protein-differential metabolite network with the integration of compound-target interaction and systems biology results, as well as enrich the target proteins related pathways.0 التعليقات 0 المشاركات 75 مشاهدة 0 معاينة
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