目的研究羟苯磺酸钙在高糖诱导的环境下对Müller细胞氧化损伤的保护作用及其机制。方法通过高糖诱导建立Müller细胞氧化损伤模型,并将细胞分为4组,即对照组(正常培养)、高糖组(35mmol/L葡萄糖培养基)、对照+羟苯磺酸钙组(常...目的研究羟苯磺酸钙在高糖诱导的环境下对Müller细胞氧化损伤的保护作用及其机制。方法通过高糖诱导建立Müller细胞氧化损伤模型,并将细胞分为4组,即对照组(正常培养)、高糖组(35mmol/L葡萄糖培养基)、对照+羟苯磺酸钙组(常规培养基础上加入0.5μmol/L羟苯磺酸钙)和高糖+羟苯磺酸钙组(高糖基础上加入0.5μmol/L羟苯磺酸钙)。使用CCK-8评估细胞增殖,流式细胞术检测细胞凋亡,试剂盒检测氧化应激指标,蛋白印迹技术检测内向整流钾离子通道4.1(inwardly rectifying K channel 4.1,Kir4.1)和水通道蛋白4(aquaporin-4,AQP4)蛋白水平。结果与对照组比较,高糖组Müller细胞增殖活性降低且凋亡率升高,细胞发生氧化应激,AQP4蛋白表达水平升高而Kir4.1蛋白表达水平降低(P<0.05)。与高糖组比较,高糖+羟苯磺酸钙组细胞增殖活性增加且凋亡率降低,细胞氧化应激损伤减轻,AQP4蛋白表达水平降低而Kir4.1蛋白表达水平升高(P<0.05)。结论羟苯磺酸钙可能通过调节AQP4/Kir4.1轴抑制高糖诱导的Müller细胞氧化损伤。展开更多
Background:Spontaneous intracerebral hemorrhage(ICH)is a severe cerebrovascular disease with high mortality,frequently accompanied by cerebral edema and acute kidney injury(AKI).Current treatment options remain limite...Background:Spontaneous intracerebral hemorrhage(ICH)is a severe cerebrovascular disease with high mortality,frequently accompanied by cerebral edema and acute kidney injury(AKI).Current treatment options remain limited.Methods:Active components and potential targets of Zhenwu Decoction(ZWD)were identified using multi-database screening.Protein-protein interaction(PPI)networks were constructed,and differentially expressed genes(DEGs)were analyzed using GEO datasets.Molecular docking and bioinformatics tools identified interactions between ZWD components and key targets,particularly AQP4 and AVPR1.Animal and cellular experiments validated the effects of ZWD on inflammation,oxidative stress,and apoptosis.Results:ZWD demonstrated significant modulation of AQP4 and AVPR1 expression,improving cerebral edema and renal function.Molecular docking confirmed ZWD’s active compounds interact strongly with these targets.In vivo studies revealed ZWD reduced oxidative stress and inflammatory responses,while in vitro experiments confirmed AVPR1’s role in apoptosis and inflammation,with ZWD significantly mitigating these adverse effects.Conclusion:This study is the first to demonstrate that ZWD alleviates cerebral edema following ICH by targeting AQP4 and AVPR1,offering new therapeutic insights for ICH management.展开更多
In the last decade,a new neurological disease concept known as anti-myelin oligodendrocyte glycoprotein antibody(MOG-IgG)-associated disease(MOGAD)has emerged and is currently one of the most focused research areas in...In the last decade,a new neurological disease concept known as anti-myelin oligodendrocyte glycoprotein antibody(MOG-IgG)-associated disease(MOGAD)has emerged and is currently one of the most focused research areas in the field of neuroimmunology.MOG is a membrane protein mainly expressed on the surface of oligodendrocytes(Zhou et al.,2006).The exact pathogenic role of MOG-IgG in patients with MOGAD remains unclear;however,MOG-IgG has been suggested to cause tissue alterations and damage MOG-expressing cells(Zhou et al.,2006).The pathogenicity of MOG-IgG is further supported by the observation that only a few patients with acquired central nervous system(CNS)demyelinating syndromes exhibit both anti-aquaporin-4 antibody(AQP4-IgG)and MOG-IgG simultaneously,particularly with clear positivity levels of these antibodies as indicated by a cell-based assay result with a titer≥1:100(Sechi et al.,2021;Banwell et al.,2023).展开更多
为了研究高原动物对青藏高原高寒、低氧等极端生境的适应机理,进一步探讨高原动物对高原反应——高原脑水肿抗性的分子机理,运用基因克隆与生物信息学相关技术和方法,对牦牛脑AQP4(水通道蛋白4,AQP4)基因CDS全长序列进行克隆、基因序列...为了研究高原动物对青藏高原高寒、低氧等极端生境的适应机理,进一步探讨高原动物对高原反应——高原脑水肿抗性的分子机理,运用基因克隆与生物信息学相关技术和方法,对牦牛脑AQP4(水通道蛋白4,AQP4)基因CDS全长序列进行克隆、基因序列比对及其生物信息学特征分析。结果表明,牦牛AQP4的CDS含有一个966 bp的开放阅读框,编码322个氨基酸;牦牛AQP4基因编码蛋白分子量34.69 k D,理论等电点(p I)7.59,其编码蛋白含有6次跨膜结构,属于疏水性蛋白;二级结构主要由α-螺旋、延伸及无规则卷曲构成;AQP4基因编码产物氨基酸同源性及系统进化分析发现,牦牛AQP4基因编码氨基酸序列与黄牛、绵羊等物种间同源性较高,系统进化情况与其亲缘关系远近一致。展开更多
为了拓展藤黄在中医临床的应用,研究其内服的毒性及炮制减毒的机制是必要的。通过巨噬细胞RAW264.7释放炎症介质(一氧化氮NO、肿瘤坏死因子TNF-α和白细胞介素IL-6)和灌胃给予藤黄生品和炮制品后大鼠胃和十二指肠组织的病理表现,判断其...为了拓展藤黄在中医临床的应用,研究其内服的毒性及炮制减毒的机制是必要的。通过巨噬细胞RAW264.7释放炎症介质(一氧化氮NO、肿瘤坏死因子TNF-α和白细胞介素IL-6)和灌胃给予藤黄生品和炮制品后大鼠胃和十二指肠组织的病理表现,判断其毒性作用;采用免疫组化和实时荧光定量PCR技术检测灌胃给药后,大鼠胃和十二指肠组织AQP3,AQP4蛋白和m RNA的表达,研究藤黄炮制减毒的机制。结果表明,藤黄生品可促进炎症介质NO,TNF-α和IL-6的释放,且与剂量呈相关性;藤黄制品组与生品组比较,NO和IL-6的释放量降低,TNF-α的释放量增加;藤黄生品可引起大鼠腹泻、白细胞升高、淋巴细胞降低,使胃黏膜充血水肿,肠黏膜坏死和炎细胞浸润,从多个角度证明内服生藤黄对胃和十二指肠组织的毒性为致炎毒性,致炎毒性与给药剂量呈相关性,炮制后藤黄的致炎毒性降低。在藤黄对胃和十二指肠组织致炎的同时,藤黄生品高剂量组大鼠胃和十二指肠组织水通道蛋白AQP3,AQP4 m RNA和蛋白表达量显著增加(P<0.05),相应剂量藤黄制品组大鼠AQP3,AQP4表达量较生藤黄组低,说明AQP3,AQP4蛋白和m RNA表达量的高低与藤黄的致炎作用强弱有一致性。通过降低AQP3,AQP4的表达水平可能是藤黄炮制减毒的作用机制之一。展开更多
文摘目的研究羟苯磺酸钙在高糖诱导的环境下对Müller细胞氧化损伤的保护作用及其机制。方法通过高糖诱导建立Müller细胞氧化损伤模型,并将细胞分为4组,即对照组(正常培养)、高糖组(35mmol/L葡萄糖培养基)、对照+羟苯磺酸钙组(常规培养基础上加入0.5μmol/L羟苯磺酸钙)和高糖+羟苯磺酸钙组(高糖基础上加入0.5μmol/L羟苯磺酸钙)。使用CCK-8评估细胞增殖,流式细胞术检测细胞凋亡,试剂盒检测氧化应激指标,蛋白印迹技术检测内向整流钾离子通道4.1(inwardly rectifying K channel 4.1,Kir4.1)和水通道蛋白4(aquaporin-4,AQP4)蛋白水平。结果与对照组比较,高糖组Müller细胞增殖活性降低且凋亡率升高,细胞发生氧化应激,AQP4蛋白表达水平升高而Kir4.1蛋白表达水平降低(P<0.05)。与高糖组比较,高糖+羟苯磺酸钙组细胞增殖活性增加且凋亡率降低,细胞氧化应激损伤减轻,AQP4蛋白表达水平降低而Kir4.1蛋白表达水平升高(P<0.05)。结论羟苯磺酸钙可能通过调节AQP4/Kir4.1轴抑制高糖诱导的Müller细胞氧化损伤。
基金support from the Medical Discipline Construction Program of Shanghai Pudong New Area Health Commission(the Specialty Program)(Grant Number:PWZzb2022-21)The Academic Leaders Training Program of Shanghai Pudong New Area Health Commission(Grant Number:PWRd2022-14)+1 种基金The Scientific Research Program of Shanghai Pudong New Area Health Commission(the Achievement Transformation Program)(Grant Number:PW2023A-51)the Shanghai Pudong New Area Gongli Hospital Youth Fund Project(Grant Number:2020YQNJJ-16).
文摘Background:Spontaneous intracerebral hemorrhage(ICH)is a severe cerebrovascular disease with high mortality,frequently accompanied by cerebral edema and acute kidney injury(AKI).Current treatment options remain limited.Methods:Active components and potential targets of Zhenwu Decoction(ZWD)were identified using multi-database screening.Protein-protein interaction(PPI)networks were constructed,and differentially expressed genes(DEGs)were analyzed using GEO datasets.Molecular docking and bioinformatics tools identified interactions between ZWD components and key targets,particularly AQP4 and AVPR1.Animal and cellular experiments validated the effects of ZWD on inflammation,oxidative stress,and apoptosis.Results:ZWD demonstrated significant modulation of AQP4 and AVPR1 expression,improving cerebral edema and renal function.Molecular docking confirmed ZWD’s active compounds interact strongly with these targets.In vivo studies revealed ZWD reduced oxidative stress and inflammatory responses,while in vitro experiments confirmed AVPR1’s role in apoptosis and inflammation,with ZWD significantly mitigating these adverse effects.Conclusion:This study is the first to demonstrate that ZWD alleviates cerebral edema following ICH by targeting AQP4 and AVPR1,offering new therapeutic insights for ICH management.
文摘In the last decade,a new neurological disease concept known as anti-myelin oligodendrocyte glycoprotein antibody(MOG-IgG)-associated disease(MOGAD)has emerged and is currently one of the most focused research areas in the field of neuroimmunology.MOG is a membrane protein mainly expressed on the surface of oligodendrocytes(Zhou et al.,2006).The exact pathogenic role of MOG-IgG in patients with MOGAD remains unclear;however,MOG-IgG has been suggested to cause tissue alterations and damage MOG-expressing cells(Zhou et al.,2006).The pathogenicity of MOG-IgG is further supported by the observation that only a few patients with acquired central nervous system(CNS)demyelinating syndromes exhibit both anti-aquaporin-4 antibody(AQP4-IgG)and MOG-IgG simultaneously,particularly with clear positivity levels of these antibodies as indicated by a cell-based assay result with a titer≥1:100(Sechi et al.,2021;Banwell et al.,2023).
文摘为了研究高原动物对青藏高原高寒、低氧等极端生境的适应机理,进一步探讨高原动物对高原反应——高原脑水肿抗性的分子机理,运用基因克隆与生物信息学相关技术和方法,对牦牛脑AQP4(水通道蛋白4,AQP4)基因CDS全长序列进行克隆、基因序列比对及其生物信息学特征分析。结果表明,牦牛AQP4的CDS含有一个966 bp的开放阅读框,编码322个氨基酸;牦牛AQP4基因编码蛋白分子量34.69 k D,理论等电点(p I)7.59,其编码蛋白含有6次跨膜结构,属于疏水性蛋白;二级结构主要由α-螺旋、延伸及无规则卷曲构成;AQP4基因编码产物氨基酸同源性及系统进化分析发现,牦牛AQP4基因编码氨基酸序列与黄牛、绵羊等物种间同源性较高,系统进化情况与其亲缘关系远近一致。
文摘为了拓展藤黄在中医临床的应用,研究其内服的毒性及炮制减毒的机制是必要的。通过巨噬细胞RAW264.7释放炎症介质(一氧化氮NO、肿瘤坏死因子TNF-α和白细胞介素IL-6)和灌胃给予藤黄生品和炮制品后大鼠胃和十二指肠组织的病理表现,判断其毒性作用;采用免疫组化和实时荧光定量PCR技术检测灌胃给药后,大鼠胃和十二指肠组织AQP3,AQP4蛋白和m RNA的表达,研究藤黄炮制减毒的机制。结果表明,藤黄生品可促进炎症介质NO,TNF-α和IL-6的释放,且与剂量呈相关性;藤黄制品组与生品组比较,NO和IL-6的释放量降低,TNF-α的释放量增加;藤黄生品可引起大鼠腹泻、白细胞升高、淋巴细胞降低,使胃黏膜充血水肿,肠黏膜坏死和炎细胞浸润,从多个角度证明内服生藤黄对胃和十二指肠组织的毒性为致炎毒性,致炎毒性与给药剂量呈相关性,炮制后藤黄的致炎毒性降低。在藤黄对胃和十二指肠组织致炎的同时,藤黄生品高剂量组大鼠胃和十二指肠组织水通道蛋白AQP3,AQP4 m RNA和蛋白表达量显著增加(P<0.05),相应剂量藤黄制品组大鼠AQP3,AQP4表达量较生藤黄组低,说明AQP3,AQP4蛋白和m RNA表达量的高低与藤黄的致炎作用强弱有一致性。通过降低AQP3,AQP4的表达水平可能是藤黄炮制减毒的作用机制之一。
