{"title":"缺氧对AD转基因小鼠脑组织硫化氢浓度的影响及其机制。","authors":"Xiumei Cheng, Meixia Ding, Churong Wei, Feng Xiao, Jiawan Liao, Mengjun Li, Zhiyong Xiao, Xiaoai Liu, Yougen Luo","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>Research has shown that hydrogen sulfide (H2S) plays a protective role in many diseases of the nervous system. The aim of this study is to investigate the effect of hypoxia on endogenous H2S concentration in the cerebral cortex of Alzheimer's disease (AD) transgenic mice and its mechanism.</p><p><strong>Methods: </strong>AD transgenic mice were raised in closed boxes and pure nitrogen was introduced to reduce the oxygen concentration to 8%-10%, establishing an animal model of hypoxia. Oxygen partial pressure was measured with an oxygen meter. The expression of cystathionine-β-synthase (CBS) in cerebral cortex tissue was determined by Western blot, and H2S concentration was measured by a modified methylene blue method.</p><p><strong>Results: </strong>(1) Hypoxia down-regulated CBS expression in cerebral cortex tissue of AD transgenic mice (p < 0.05). (2) The concentration of H2S in the cerebral cortex tissue of the hypoxic transgenic group was significantly lower than that of the Control group (p < 0.01). (3) Overexpression of CBS reversed the hypoxia-induced decrease of H2S concentration in the cerebral cortex tissue of AD transgenic mice (p < 0.01).</p><p><strong>Conclusions: </strong>Hypoxia decreased the concentration of endogenous H2S in the cerebral cortex tissue of AD transgenic mice by down-regulating the expression of CBS.</p>","PeriodicalId":94154,"journal":{"name":"Neuro endocrinology letters","volume":"44 4","pages":"193-198"},"PeriodicalIF":0.0000,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The effect of hypoxia on Hydrogen Sulfide concentration of brain tissue in AD transgenic mice and its mechanism.\",\"authors\":\"Xiumei Cheng, Meixia Ding, Churong Wei, Feng Xiao, Jiawan Liao, Mengjun Li, Zhiyong Xiao, Xiaoai Liu, Yougen Luo\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>Research has shown that hydrogen sulfide (H2S) plays a protective role in many diseases of the nervous system. The aim of this study is to investigate the effect of hypoxia on endogenous H2S concentration in the cerebral cortex of Alzheimer's disease (AD) transgenic mice and its mechanism.</p><p><strong>Methods: </strong>AD transgenic mice were raised in closed boxes and pure nitrogen was introduced to reduce the oxygen concentration to 8%-10%, establishing an animal model of hypoxia. Oxygen partial pressure was measured with an oxygen meter. The expression of cystathionine-β-synthase (CBS) in cerebral cortex tissue was determined by Western blot, and H2S concentration was measured by a modified methylene blue method.</p><p><strong>Results: </strong>(1) Hypoxia down-regulated CBS expression in cerebral cortex tissue of AD transgenic mice (p < 0.05). (2) The concentration of H2S in the cerebral cortex tissue of the hypoxic transgenic group was significantly lower than that of the Control group (p < 0.01). (3) Overexpression of CBS reversed the hypoxia-induced decrease of H2S concentration in the cerebral cortex tissue of AD transgenic mice (p < 0.01).</p><p><strong>Conclusions: </strong>Hypoxia decreased the concentration of endogenous H2S in the cerebral cortex tissue of AD transgenic mice by down-regulating the expression of CBS.</p>\",\"PeriodicalId\":94154,\"journal\":{\"name\":\"Neuro endocrinology letters\",\"volume\":\"44 4\",\"pages\":\"193-198\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Neuro endocrinology letters\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Neuro endocrinology letters","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The effect of hypoxia on Hydrogen Sulfide concentration of brain tissue in AD transgenic mice and its mechanism.
Objective: Research has shown that hydrogen sulfide (H2S) plays a protective role in many diseases of the nervous system. The aim of this study is to investigate the effect of hypoxia on endogenous H2S concentration in the cerebral cortex of Alzheimer's disease (AD) transgenic mice and its mechanism.
Methods: AD transgenic mice were raised in closed boxes and pure nitrogen was introduced to reduce the oxygen concentration to 8%-10%, establishing an animal model of hypoxia. Oxygen partial pressure was measured with an oxygen meter. The expression of cystathionine-β-synthase (CBS) in cerebral cortex tissue was determined by Western blot, and H2S concentration was measured by a modified methylene blue method.
Results: (1) Hypoxia down-regulated CBS expression in cerebral cortex tissue of AD transgenic mice (p < 0.05). (2) The concentration of H2S in the cerebral cortex tissue of the hypoxic transgenic group was significantly lower than that of the Control group (p < 0.01). (3) Overexpression of CBS reversed the hypoxia-induced decrease of H2S concentration in the cerebral cortex tissue of AD transgenic mice (p < 0.01).
Conclusions: Hypoxia decreased the concentration of endogenous H2S in the cerebral cortex tissue of AD transgenic mice by down-regulating the expression of CBS.
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