1.A logistic retrospective analysis about the risk factors of cerebral hemorrhage after the liver transplantation
Qihua HE ; Guiling ZHONG ; Miaoxia CHEN ; Xianling ZHANG ; Zhenhua DAI ; Wanlin HUANG ; Mingwu CHEN
Chinese Journal of Practical Nursing 2006;0(28):-
Objective Analysis the risk factors which maybe caused the cerebral hemorrhage after the liver transplantation, and then make out the counter nursing measures. Methods Selected 12 patients with cerebral hemorrhage after the liver transplantation as the experimental group, and then matching 48 patients without cerebral hemorrhage after the liver transplantation as the control group. Analysis the factor which related the cerebral hemorrhage. Results The factors which related the cerebral hemorrhage after the liver transplantation included in the Intensive Care Unite, heme level, Child level, APTT, albumin, blooding volume during the operation, operation time and the postoperative blood platelet level. The factors of Child level and the blooding volume during the operation were the independence risk factors of cerebral hemorrhage. Conclusion The factors of Child level and the blooding volume during the operation were the independence risk factors of cerebral hemorrhage, we should carry out counter nursing measures to prevent them.
2.The deubiquitinating enzyme 13 retards non-alcoholic steatohepatitis via blocking inactive rhomboid protein 2-dependent pathway.
Minxuan XU ; Jun TAN ; Liancai ZHU ; Chenxu GE ; Wei DONG ; Xianling DAI ; Qin KUANG ; Shaoyu ZHONG ; Lili LAI ; Chao YI ; Qiang LI ; Deshuai LOU ; Linfeng HU ; Xi LIU ; Gang KUANG ; Jing LUO ; Jing FENG ; Bochu WANG
Acta Pharmaceutica Sinica B 2023;13(3):1071-1092
Nowadays potential preclinical drugs for the treatment of nonalcoholic steatohepatitis (NASH) have failed to achieve expected therapeutic efficacy because the pathogenic mechanisms are underestimated. Inactive rhomboid protein 2 (IRHOM2), a promising target for treatment of inflammation-related diseases, contributes to deregulated hepatocyte metabolism-associated nonalcoholic steatohepatitis (NASH) progression. However, the molecular mechanism underlying Irhom2 regulation is still not completely understood. In this work, we identify the ubiquitin-specific protease 13 (USP13) as a critical and novel endogenous blocker of IRHOM2, and we also indicate that USP13 is an IRHOM2-interacting protein that catalyzes deubiquitination of Irhom2 in hepatocytes. Hepatocyte-specific loss of the Usp13 disrupts liver metabolic homeostasis, followed by glycometabolic disorder, lipid deposition, increased inflammation, and markedly promotes NASH development. Conversely, transgenic mice with Usp13 overexpression, lentivirus (LV)- or adeno-associated virus (AAV)-driven Usp13 gene therapeutics mitigates NASH in 3 models of rodent. Mechanistically, in response to metabolic stresses, USP13 directly interacts with IRHOM2 and removes its K63-linked ubiquitination induced by ubiquitin-conjugating enzyme E2N (UBC13), a ubiquitin E2 conjugating enzyme, and thus prevents its activation of downstream cascade pathway. USP13 is a potential treatment target for NASH therapy by targeting the Irhom2 signaling pathway.