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| 1 | 儿童金黄色葡萄球菌肠毒素食物中毒196例的临床特征显示文摘金黄色葡萄球菌广泛分布于自然界中,除了常引起皮肤、组织及器官的化脓性炎症外,其产生的肠毒素可沾染食物而致食物中毒。近年来,金黄色葡萄球菌所引起的食物中毒日益成为全球性的公共卫生问题[1-4],严重危害人类安全与健康。2011年9月湖南长沙某小学发生了一起因食用金黄色葡萄球菌肠毒素污染的鸡腿引起的食物中毒。湖南省儿童医院主持参与了这一突发事件的紧急救护,制定统一方案、集中观察和有效处置。本文对这一事件中全部来院留观及住院治疗的患儿资料进行分析,旨在总结儿童金黄色葡萄球菌食物中毒的临床特点。 | 黄娇甜 祝益民 | 2013 | 中华急诊医学杂志2013，22，5： | 9 |
| 2 | 基于初级胆汁酸合成探讨乳香醋炙对溃疡性结肠炎的增效机制显示文摘目的从对初级胆汁酸合成的影响,探讨醋炙增强乳香改善溃疡性结肠炎(ulcerative colitis,UC)的作用机制。方法基于2,4,6-三硝基苯磺酸(2,4,6-trinitrobenzenesulfonic acid,TNBS)法建立UC大鼠模型,采用超高效液相色谱-质谱联用(UPLC-TQ-MS)法测定大鼠血浆中6种初级胆汁酸含量;进一步借助L-02肝细胞模型,围绕初级胆汁酸合成场所肝脏,探究乳香醋炙前后及醋炙前后差异成分3-乙酰-9,11-去氢-β-乳香酸(3-acetyl-9,11-dehydro-β-boswellic acid,ADHBA)的干预作用,以ELISA法考察胆汁酸前体胆固醇变化,采用q RT-PCR法测定游离型初级胆汁酸合成酶胆固醇7α-羟化酶(cholesterol 7α-hydroxylase,CYP7A1)、甾醇12α-羟化酶(sterol 12α-hydroxylase,CYP8B1)、甾醇-27-羟化酶(27-hydroxycholesterol,CYP27A1)、氧甾醇-7α-羟化酶(oxysterol-7α-hydroxylase,CYP7B1)、结合型初级胆汁酸合成酶胆汁酰基辅酶A合成酶(bile acyl-CoA synthetase,BACS)和胆汁酸-辅酶A:氨基酸正酰基转移酶(bile acid-CoA:amino acid N-acyltransferase,BAAT)m RNA表达水平。结果乳香醋炙后,对UC模型大鼠血浆中的初级胆汁酸总量和游离型、结合型初级胆汁酸总量的回调水平更接近正常组。乳香、醋乳香、醋炙前后差异成分ADHBA均可降低胆汁酸合成前体胆固醇水平,但以醋乳香及ADHBA的调控作用更加明显。醋乳香对游离型初级胆汁酸合成经典途径中CYP7A1的抑制和CYP8B1的上调作用以及对结合型初级胆汁酸合成酶BACS、BAAT的上调作用强于乳香组,乳香联合ADHBA组同醋乳香组上调作用一致。结论乳香醋炙后对初级胆汁酸合成调控作用主要是基于其对游离型初级胆汁酸经典合成途径中限速酶CYP7A1的抑制,回调机体在UC病理状态下的初级胆汁酸水平,进而增强乳香对UC的改善作用;ADHBA可能为乳香醋炙增效的物质基础之一。 | 彭诗涛 刘振丽 王淳 张琳琳 万晓莹 宋志前 宁张弛 | 2022 | 中草药2022，53，1： | 4 |
| 3 | Epithelial markers of colorectal carcinogenesis in ulcerative colitis and primary sclerosing cholangitis显示文摘AIM:To evaluate the expression of epithelial markers of colorectal carcinogenesis in patients with long-term ulcerative colitis(UC) and primary sclerosing cholangitis(PSC) before and after transplantation.METHODS:Eight patients with UC and PSC prior to liver transplantation(PSC-UC),22 patients with UC after liver transplantation for PSC(OLT),9 patients with active ulcerative colitis without PSC(UCA),7 patients withUC in remission(UCR) and 10 controls(N) underwent colonoscopy with multiple biopsies.Specimens were analysed histologically and semi-quantitatively immunohistochemically for p53,Bcl-2 and cyclooxygenase-2(COX-2) markers.Statistical analysis was performed by Kruskal-Wallis and Fisher's exact tests.RESULTS:PSC-UC had a statistically significantly higher expression of p53 in the nondysplastic mucosa as compared to OLT,UCA,UCR and N(P < 0.05).We also found a statistically significant positive correlation between the incidence of PSC and the expression of p53(P < 0.001).UCA had a higher p53 expression as compared to UCR.OLT had a significantly lower expression of p53 as compared with PSC-UC(P < 0.001).Bcl-2 had a significant higher bcl-2 expression as compared with controls.No difference in COX-2 expression between PSC-UC,UCR and UCA was found.UCA had higher COX-2 expression as compared to UCR.We also found a statistically significant positive correlation between the expression of COX-2 and p53.Patients after liver transplantation for PSC had a statistically significantly lower expression of the p53 compared with PSCUC(P < 0.001).PSC-UC had the same inflammatory endoscopic activity as OLT and UCR when evaluated with the Mayo score.CONCLUSION:Our study shows that the nondysplatic mucosa of UC patients with PSC is characterised by a higher expression of the tumour suppressor gene p53,suggesting a higher susceptibility of cancer.This p53 overexpression correlates with the presence of PSC whilst it is not present in patients with UC after liver transplantation for PSC. | Pavel Wohl Tomas Hucl Pavel Drastich David Kamenar Julius Spicak Eva Honsova Eva Sticova Alena Lodererova Jan Matous Martin Hill Petr Wohl Milos Kucera | 2013 | World Journal of Gastroenterology2013，19，14： | 2 |
| 4 | 肠道疾病中胆汁酸及其受体对NLRP3炎症小体调控作用的研究进展显示文摘胆汁酸作为一种重要的内源性信号分子,参与机体代谢、免疫和炎症等多种生理病理过程,对维持肠道的正常生理功能具有重要作用。核苷酸结合寡聚结构域样受体蛋白3(NLRP3)炎症小体是一种模式识别受体,可通过识别病原体相关分子模式或危险相关分子模式,感知外源性微生物或来自损伤、死亡细胞的内源性危险信号,从而调节肠道免疫进程。研究表明,胆汁酸与NLRP3炎症小体之间存在多种调控模式,共同参与肠道稳态维持和疾病调节。基于国内外现有相关研究综述了肠道疾病中胆汁酸及其受体对NLRP3炎症小体调控作用的研究进展。 | 廖楚瑶 李思奇 张尊建 张培 许风国 | 2022 | 药学进展2022，46，3： | 0 |
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