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CCl4诱导的大鼠急性肝[功能]衰竭与恢复过程中基因表达变化及作用分析 被引量:1
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作者 郭学强 郗玲玲 +4 位作者 王亚豪 郭跃东 张照可 徐存拴 陈广文 《中国生物化学与分子生物学报》 CAS CSCD 北大核心 2019年第9期986-995,共10页
急性肝[功能]衰竭(acute liver failure,ALF)是一种危害较大的肝疾病,因其诱发和影响因素众多,导致其发生和发展机制尚不完全清楚。本文构建了四氯化碳(CCl4)诱导的大鼠ALF模型,通过检测血清ALT和AST活性、肝系数及形态结构进行建模评估... 急性肝[功能]衰竭(acute liver failure,ALF)是一种危害较大的肝疾病,因其诱发和影响因素众多,导致其发生和发展机制尚不完全清楚。本文构建了四氯化碳(CCl4)诱导的大鼠ALF模型,通过检测血清ALT和AST活性、肝系数及形态结构进行建模评估,用大鼠基因组230 2. 0芯片和生物信息学方法检测和分析了相关基因表达变化,用qRT-PCR和Western印迹检测了其机制相关基因在mRNA和蛋白质水平的表达变化。结果表明,本研究成功建立了可靠的大鼠ALF模型。检测发现,6 681个基因发生了有意义的表达变化。其中,4 819个基因与ALF相关。在急性肝[功能]衰竭过程中,细胞存活、增殖和分化等生理活动及IL-1、IL-6和IL-8等信号通路的信号传导活性增强,而细胞凋亡以及p53、ATM和AMPK等信号通路减弱。基于本文结果推测,在ALF的损伤和进展阶段,炎症因子IL-1R1、TNFR1和TNFR2等通过IL-1α→IL-1R1→→MAPK8→FOS/JUN途径和/或TNF-α→TNFR1/B→→NF-κB→→Caspases途径促进细胞凋亡、炎症反应和免疫应答;抑癌基因TP53在进展和恢复阶段,通过p53途径调节细胞凋亡;TNF-α和IL-10在恢复阶段,通过NF-κB、JAK-STAT和MAPK等信号通路激活增殖相关基因表达,促进肝细胞增殖。本文推测,在CCl4诱导的急性肝[功能]衰竭中,IL-1R1、TNFR1、TNFR2、CASPASE3、TP53、PCNA和NF-κB等基因发挥重要作用。本文为了解急性肝[功能]衰竭的发生和发展机制提供了有用的信息。 展开更多
关键词 急性[功能]衰竭 四氯化碳 大鼠基因组230 2. 0芯片 细胞凋亡
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急性肝功能哀竭动物模型的建立 被引量:9
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作者 李亚明 张晶 +2 位作者 赵军 陈煜 段钟平 《肝脏》 2006年第3期175-177,180,共4页
目的 建立与临床较相近的急性肝功能衰竭动物模型。方法 应用中国实验小型猪7头,采用Ⅰ期门静脉.下腔静脉吻合、Ⅱ期(48h后)供肝动脉暂时结扎4h的方法建立缺血性急性肝功能衰竭动物模型;中国实验小型猪6头给于1.2g/kg的D-氨基半... 目的 建立与临床较相近的急性肝功能衰竭动物模型。方法 应用中国实验小型猪7头,采用Ⅰ期门静脉.下腔静脉吻合、Ⅱ期(48h后)供肝动脉暂时结扎4h的方法建立缺血性急性肝功能衰竭动物模型;中国实验小型猪6头给于1.2g/kg的D-氨基半乳糖诱导肝功能衰竭,建立药物性急性肝功能衰竭动物模型。观察比较每组动物一般状况、生存时间、生理生化指标、颅内压、组织病理等方面的变化。结果 在缺血性模型中,1头猪死于术中大出血,1头猪的生存时间超过5d,其余5头存活时间为18~30h[平均存活时间(22.5±5.6)h];反映肝功能的主要指标(AST,总胆红素、凝血酶原时间、血氨、血糖)均明显异常;组织病理显示肝脏大块坏死。在药物性模型中,动物在给药后12h各项指标开始变化明显,给药后48h损伤达高峰,平均存活时间为(67.9±9.4)h,最终死于严重肝功能衰竭。结论应用缺血方法与药物方法均能建立急性肝功能衰谒动物模型,其中D-氨基半乳糖1.2g/kg的给药剂量建立的模型稳定性好且能较好模拟临床急性肝功能衰竭发生发展的病理生理过程,可用于研究机制和评价疗效。 展开更多
关键词 急性功能肝衰竭 动物模型
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Acute liver failure is frequent during heat stroke 被引量:20
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作者 JM Garcin JA Bronstein +2 位作者 S Cremades P Courbin F Cointet 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第1期158-159,共2页
Acute liver failure (ALF) is relatively frequent during heat stroke (HS). This risk must be emphasized, because its inddence is higher than is usually thought. In a recent study by Weigand et al, two cases were re... Acute liver failure (ALF) is relatively frequent during heat stroke (HS). This risk must be emphasized, because its inddence is higher than is usually thought. In a recent study by Weigand et al, two cases were reported in which liver failure was the leading symptom. We have confirmed their conclusion in a study of 25 cases of HS with ALF, compared with 25 other cases without ALE Moreover, we observed that hypophosphatemia on admission could predict occurrence of ALF during HS. As for clinical and other biological parameters, phosphatemia should be monitored for at least 3 d in all cases of HS, even when it is thought to be mild. 展开更多
关键词 Heat stroke Hypophosphatemia Liver failure
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Hepatotoxicity of NONI juice: Report of two cases 被引量:3
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作者 Vanessa Stadlbauer Peter Fickert +4 位作者 Carolin Lackner Jutta Schmerlaib Peter Krisper Michael Trauner Rudolf E Stauber 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第30期4758-4760,共3页
NONI juice (Morinda citrifolia) is an increasingly popular wellness drink claimed to be beneficial for many illnesses.No overt toxicity has been reported to date. We present two cases of novel hepatotoxicity of NONI j... NONI juice (Morinda citrifolia) is an increasingly popular wellness drink claimed to be beneficial for many illnesses.No overt toxicity has been reported to date. We present two cases of novel hepatotoxicity of NONI juice. Causality of liver injury by NONI juice was asses-sed. Routine laboratory tests and transjugular or percutaneous liver biopsy were performed. The first patient underwent successful liver transplantation while the second patient recovered spontaneously after cessation of NONI juice.A 29-year-old man with previous toxic hepatitis associated with small doses of paracetamol developed sub-acute hepatic failure following consumption of 1.5 L NONI juice over 3 wk necessitating urgent liver transplantation. A 62-year-old woman without evidence of previous liver disease developed an episode of self-limited acutehepatitis following consumption of 2 L NONI juice for over 3 mo. The most likely hepatotoxic components of Morinda citrifolia were anthraquinones. Physicians should be aware of potential hepatotoxicity of NONI juice. 展开更多
关键词 Herbal hepatotoxicity Drug-induced hepatitis NONI juice Acute liver failure
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Evaluation of mannitol effect in patients with acute hepatic failure and acute-on-chronic liver failure using conventional MRI,diffusion tensor imaging and in-vivo proton MR spectroscopy 被引量:2
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作者 Vivek A Saraswat Sona Saksena +5 位作者 Kavindra Nath Pranav Mandal Jitesh Singh M Albert Thomas Ramkishore S Rathore Rakesh K Gupta 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第26期4168-4178,共11页
AIM: To evaluate the effect of an intravenous bolus of mannitol in altering brain metabolites, brain water content, brain parenchyma volume, cerebrospinal fluid (CSF) volume and clinical signs in controls and in pa... AIM: To evaluate the effect of an intravenous bolus of mannitol in altering brain metabolites, brain water content, brain parenchyma volume, cerebrospinal fluid (CSF) volume and clinical signs in controls and in patients with acute liver failure (ALF) and acute- on-chronic liver failure (ACLF), by comparing changes in conventional magnetic resonance imaging (MRI), in vivo proton magnetic resonance spectroscopy (PMRS) and diffusion tensor imaging (DTI) before and after its infusion.METHODS: Five patients each with ALF and ACLF in grade 3 or 4 hepatic encephalopathy and with clinical signs of raised intracranial pressure were studied along with five healthy volunteers. After baseline MRI, an intravenous bolus of 20% mannitol solution was given over 10 min in controls as well as in patients with ALF and ACLE Repeat MRI for the same position was acquired 30 rnin after completing the rnannitol injection. RESULTS: No statistically significant difference was observed between controls and patients with ALF and ACLF in metabolite ratios, DTI metrics and brain volume or CSF volume following 45 rain of mannitol infusion. There was no change in clinical status at the end of post-mannitol imaging. CONCLUSION: The osmotic effect of mannitol did not result in significant reduction of brain water content, alteration in metabolite ratios or any change in the clinical status of these patients during or within 45 min of mannitol infusion. 展开更多
关键词 MANNITOL Acute liver failure Acute-on-chronic liver failure Proton MR spectroscopy Diffusion tensor imaging
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Hepatic failure caused by plasma cell infiltration in multiple myeloma 被引量:2
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作者 Fadi E Rahhal Robert R Schade +1 位作者 Asha Nayak Teresa A Coleman 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第16期2038-2040,共3页
Although plasma cell infiltration is not rare in autopsy of patients with multiple myeloma (MM), it is very rarely detected in living patients. This is because MM rarely causes significant liver dysfunction that req... Although plasma cell infiltration is not rare in autopsy of patients with multiple myeloma (MM), it is very rarely detected in living patients. This is because MM rarely causes significant liver dysfunction that requires further evaluation. A 49-year-old man presented with acute renal failure and was diagnosed with kappa light chain MM stageⅡB. Thalidomide and dexamethasone were initiated. The patient developed a continuous increase in bilirubin that led to severe cholestasis. A liver biopsy revealed plasma cell infiltration. He then rapidly progressed to liver failure and died. Treatment options are limited in MM with significant liver dysfunction. Despite new drug therapies in MM, those patients with rapidly progressive liver failure appear to have a dismal outcome. 展开更多
关键词 Hepatic failure Multiple myeloma Cell infiltration
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Hepatorenal syndrome 被引量:4
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作者 Jan Lata 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第36期4978-4984,共7页
Hepatorenal syndrome(HRS) is defined as a functional renal failure in patients with liver disease with portal hypertension and it constitutes the climax of systemic circulatory changes associated with portal hypertens... Hepatorenal syndrome(HRS) is defined as a functional renal failure in patients with liver disease with portal hypertension and it constitutes the climax of systemic circulatory changes associated with portal hypertension.This term refers to a precisely specified syndrome featuring in particular morphologically intact kidneys,where regulatory mechanisms have minimised glomerular filtration and maximised tubular resorption and urine concentration,which ultimately results in uraemia.The syndrome occurs almost exclusively in patients with ascites.Type 1 HRS develops as a consequence of a severe reduction of effective circulating volume due to both an extreme splanchnic arterial vasodilatation and a reduction of cardiac output.Type 2 HRS is characterised by a stable or slowly progressive renal failure so that its main clinical consequence is not acute renal failure,but refractory ascites,and its impact on prognosis is less negative.Liver transplantation is the most appropriate therapeutic method,nevertheless,only a few patients can receive it.The most suitable "bridge treatments" or treatment for patients ineligible for a liver transplant include terlipressin plus albumin.Terlipressin is at an initial dose of 0.5-1 mg every 4 h by intravenous bolus to 3 mg every 4 h in cases when there is no response.Renal function recovery can be achieved in less than 50% of patients and a considerable decrease in renal function may reoccur even in patients who have been responding to therapy over the short term.Transjugular intrahepatic portosystemic shunt plays only a marginal role in the treatment of HRS. 展开更多
关键词 Liver cirrhosis Hepatorenal syndrome As-cites VASOCONSTRICTORS Terlipressin
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Acute liver failure caused by drug-induced hypersensitivity syndrome associated with hyperferritinemia 被引量:1
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作者 Masayuki Miyazaki Masatake Tanaka +5 位作者 Akihiro Ueda Tsuyoshi Yoshimoto Masaki Kato Makoto Nakamuta Kazuhiro Kotoh Ryoichi Takayanagi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第44期4928-4931,共4页
Drug-induced hypersensitivity syndrome(DIHS) is a severe reaction usually characterized by fever,rash,and multiorgan failure,occurring 2-6 wk after drug introduction.It is an immune-mediated reaction involving macroph... Drug-induced hypersensitivity syndrome(DIHS) is a severe reaction usually characterized by fever,rash,and multiorgan failure,occurring 2-6 wk after drug introduction.It is an immune-mediated reaction involving macrophage and T-lymphocyte activation and cytokine release.A 54-year-old woman was diagnosed with rheumatic arthritis and initiated salazosulfapyridine by mouth.About 10 d later,she had a high fever,skin rash and liver dysfunction.She was admitted to hospital and diagnosed with a drug eruption.She was treated with oral prednisolone 30 mg/d;however,she developed high fever again and her blood tests showed acute liver failure and cytopenia associated with hyperferritinemia.She was diagnosed with acute liver failure and hemophagocytosis caused by DIHS.She was transferred to the Department of Medicine and Bioregulatory Science,Kyushu University,where she was treated with arterial steroid injection therapy.Following this treatment,her liver function improved and serum ferritin immediately decreased.We hypothesized that an immune-mediated reaction in DIHS may have generated over-activation of macrophages and T-lymphocytes,followed by a cytokine storm that affected various organs.The measurement of serum ferritin might be a useful marker of the severity of DIHS. 展开更多
关键词 Acute liver failure Drug-induced hypersensitivity syndrome Ferritin Human herpes virus 6 Macrophage
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