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Zhou M, Cheng C, Han Y, Niu M, Huang Y, He X, Liu Y, Xiao X, Wang J, Ma Z. 自身免疫性肝炎、原发性胆汁性胆管炎及其重叠综合征的临床代谢组学表征及区分. CHINESE SCIENCE BULLETIN-CHINESE 2022. [DOI: 10.1360/tb-2022-0147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bhanji RA, Chow J, Ma M, Pannu N, Bain VG, Kneteman N, Montano-Loza AJ. Post-liver transplantation chronic kidney disease is associated with increased cardiovascular disease risk and poor survival. Transpl Int 2021; 34:2824-2833. [PMID: 34738667 DOI: 10.1111/tri.14154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 10/25/2021] [Accepted: 11/01/2021] [Indexed: 11/30/2022]
Abstract
Chronic kidney disease (CKD) is common following liver transplantation (LT). We aimed to investigate the frequency, risk factors, and impact of CKD on cardiovascular disease (CVD), graft, and patient survival. We analyzed 752 patients who received LT at the University of Alberta. Development of CKD was defined as eGFR <60 ml/min for greater than 3 months, intrinsic renal disease or presence of end-stage renal disease requiring renal replacement therapy. 240 patients were female (32%), and mean age at LT was 53 ± 11 years. CKD was diagnosed in 448 (60%) patients. On multivariable analysis, age (OR 1.3; P = 0.01), female sex (OR 3.3; P < 0.001), baseline eGFR (OR 0.83; P < 0.001), MELD (OR 1.03; P = 0.01), de novo metabolic syndrome (OR 2.3; P = 0.001), and acute kidney injury (OR 3.5; P < 0.001) were associated with CKD. A higher tacrolimus concentration to dose ratio was protective for CKD (OR 0.69; P < 0.001). CKD was associated with post-transplant CVD (26% vs. 16% P < 0.001), reduced graft (HR 1.4; P = 0.02), and patient survival (HR 1.3; P = 0.03). CKD is a frequent complication following LT and is associated with an increased risk of CVD and reduced graft and patient survival.
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Affiliation(s)
- Rahima A Bhanji
- Division of Gastroenterology & Liver Unit, University of Alberta Hospital, Edmonton, AB, Canada
| | - Jessica Chow
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Mang Ma
- Division of Gastroenterology & Liver Unit, University of Alberta Hospital, Edmonton, AB, Canada
| | - Neesh Pannu
- Division of Nephrology, University of Alberta Hospital, Edmonton, AB, Canada
| | - Vincent G Bain
- Division of Gastroenterology & Liver Unit, University of Alberta Hospital, Edmonton, AB, Canada
| | - Norman Kneteman
- Department of Surgery & Liver Transplantation, University of Alberta Hospital, Edmonton, AB, Canada
| | - Aldo J Montano-Loza
- Division of Gastroenterology & Liver Unit, University of Alberta Hospital, Edmonton, AB, Canada
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Lv D, Wang Z, Ji S, Wang X, Hou H. Plasma Levels of Homocysteine is Associated with Liver Fibrosis in Health Check-Up Population. Int J Gen Med 2021; 14:5175-5181. [PMID: 34512000 PMCID: PMC8423488 DOI: 10.2147/ijgm.s329863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/24/2021] [Indexed: 01/02/2023] Open
Abstract
Object Studies have shown a link between homocysteine (Hcy) and heart diseases, kidney diseases, cerebrovascular diseases, liver diseases, and other pathological conditions. However, the relationship between Hcy and liver fibrosis (LF) is unclear. Here, we studied the link between plasma Hcy concentration and LF. Methods We determined and recorded the plasma Hcy concentration, general biochemical parameters, and liver stiffness measurement (LSM) in 1582 subjects, followed by statistical data analyses. Results During different stages of LF, we found a considerable difference (p <0.001 unless specified) in body mass index (BMI), sex, age, Hcy, the levels of alanine transaminase (ALT), gamma-glutamyl transpeptidase (GGT; P = 0.012), triglycerides (TG; P = 0.006), low-density lipoprotein cholesterol (LDL-C), fasting blood glucose (FBS), and platelet count (PLT). There was a strong association between the plasma Hcy concentration and the serum biomarkers of LF (P <0.001) and the values of LSM (P <0.001). Conclusion The plasma Hcy concentration was substantially different among different stages of LF. The higher the plasma Hcy concentration, the more evident was the degree of LF.
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Affiliation(s)
- Dan Lv
- Physical Examination Center, Hebei General Hospital, Shijiazhuang City, Hebei Province, People's Republic of China
| | - Zepu Wang
- Department of Hepatobiliary Surgery, Hebei General Hospital, Shijiazhuang City, Hebei Province, People's Republic of China
| | - Shuai Ji
- Physical Examination Center, Hebei General Hospital, Shijiazhuang City, Hebei Province, People's Republic of China
| | - Xiaoxi Wang
- Physical Examination Center, Hebei General Hospital, Shijiazhuang City, Hebei Province, People's Republic of China
| | - Huiqing Hou
- Physical Examination Center, Hebei General Hospital, Shijiazhuang City, Hebei Province, People's Republic of China
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Wang L, Guo X, Xu X, Xu S, Han J, Wang R, Guo Z, Yi F, Qi X. No Association of Homocysteine, Anticardiolipin Antibody, and Anti-β2 Glycoprotein I Antibody With Portal Venous System Thrombosis in Liver Cirrhosis. Clin Appl Thromb Hemost 2021; 27:10760296211010969. [PMID: 33882699 PMCID: PMC8072837 DOI: 10.1177/10760296211010969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 02/06/2023] Open
Abstract
Portal venous system thrombosis (PVST), a common complication of liver cirrhosis, is closely associated with thrombophilia. To explore the association of homocysteine (Hcy), anticardiolipin antibody (aCL), and anti-β2 glycoprotein I antibody (aβ2GPI), which are possible thrombophilic factors, with PVST in liver cirrhosis. Overall, 654 non-malignant patients (219 with and 435 without liver cirrhosis) admitted between January 2016 and June 2020 were retrospectively evaluated. Presence of PVST, degree of main portal vein (MPV) thrombosis, and clinically significant PVST were identified. Hcy level, hyperhomocysteinemia (HHcy), aCL positivity, and aβ2GPI positivity were compared according to the presence of liver cirrhosis and PVST. Positive aβ2GPI was significantly more frequent in patients with liver cirrhosis than those without, but Hcy level and proportions of HHcy and positive aCL were not significantly different between them. PVST could be evaluated in 136 cirrhotic patients. Hcy level [10.57 μmol/L (2.71-56.82) versus 9.97 μmol/L (2.05-53.44); P = 0.796] and proportions of HHcy [4/44 (9.1%) versus 13/81 (16.0%); P = 0.413] and positive aCL [1/23 (4.3%) versus 10/52 (19.2%); P = 0.185] and aβ2GPI [9/23 (39.1%) versus 21/52 (40.4%); P = 0.919] were not significantly different between cirrhotic patients with and without PVST. There was still no significant association of Hcy level, HHcy, aCL, or aβ2GPI with PVST based on Child-Pugh classification, MPV thrombosis >50%, and clinically significant PVST. Hcy, aCL, and aβ2GPI may not be associated with PVST in liver cirrhosis, suggesting that routine screening for Hcy, aCL, and aβ2GPI should be unnecessary in such patients.
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Affiliation(s)
- Le Wang
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- Postgraduate College, Dalian Medical University, Dalian, China
| | - Xiaozhong Guo
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
| | - Xiangbo Xu
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
| | - Shixue Xu
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
| | - Juqiang Han
- Institute of Hepatology, PLA Army General Hospital, Beijing, China
| | - Ran Wang
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
| | - Zeqi Guo
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
| | - Fangfang Yi
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
- Postgraduate College, Dalian Medical University, Dalian, China
| | - Xingshun Qi
- Liver Cirrhosis Study Group, Department of Gastroenterology, General Hospital of Northern Theater Command (formerly called General Hospital of Shenyang Military Area), Shenyang, China
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Ho HL, Tsai MH, Hsieh YH, Huo TI, Chang CC, Lee FY, Huang HC, Hou MC, Lee SD. Folic acid ameliorates homocysteine-induced angiogenesis and portosystemic collaterals in cirrhotic rats. Ann Hepatol 2020; 18:633-639. [PMID: 31078441 DOI: 10.1016/j.aohep.2018.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 12/06/2018] [Accepted: 11/23/2018] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES Liver cirrhosis is characterized by increased intrahepatic resistance, splanchnic vasodilation/angiogenesis, and formation of portosystemic collateral vessels. Collaterals can cause lethal complications such as gastroesophageal variceal hemorrhage. Homocysteine is linked to vascular dysfunction and angiogenesis and higher levels have been reported in cirrhotic patients. It is also known that folic acid supplementation reverses the effects of homocysteine. However, the treatment effect in cirrhosis has yet to be investigated. MATERIAL AND METHODS Liver cirrhosis was induced in Sprague-Dawley rats with common bile duct ligation (CBDL). The CBDL rats randomly received (1) vehicle; (2) dl-homocysteine thiolactone (1g/kg/day); (3) dl-homocysteine thiolactone plus folic acid (100mg/kg/day); or (4) folic acid. On the 29th day, hemodynamic parameters, liver and renal biochemistry, protein expressions of proangiogenic factors, mesenteric vascular density and portosystemic shunting were evaluated. RESULTS In the cirrhotic rats, homocysteine increased mesenteric vascular density and the severity of shunting. It also up-regulated the protein expressions of mesenteric vascular endothelial growth factor (VEGF) and phosphorylated-endothelial nitric oxide synthase (p-eNOS). These effects were reversed by folic acid treatment (P<0.05). CONCLUSION Folic acid ameliorated the adverse effects of homocysteine in the cirrhotic rats, which may be related to down-regulation of the VEGF-NO signaling pathway.
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Affiliation(s)
- Hsin-Ling Ho
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology and Hepatology, Department of Medicine, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, Yilan, Taiwan
| | - Ming-Hung Tsai
- Division of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Lin-Kuo Medical Center, Chang Gung University, College of Medicine, Taoyuan, Taiwan
| | - Yu-Hsin Hsieh
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Teh-Ia Huo
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ching-Chih Chang
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Fa-Yauh Lee
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Hui-Chun Huang
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Ming-Chih Hou
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shou-Dong Lee
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan
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Review of Serum Biomarkers and Models Derived from Them in HBV-Related Liver Diseases. DISEASE MARKERS 2020; 2020:2471252. [PMID: 32774512 PMCID: PMC7391085 DOI: 10.1155/2020/2471252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 07/11/2020] [Indexed: 12/13/2022]
Abstract
A series of predictive scoring systems is available for stratifying the severity of conditions and assessing the prognosis in patients with HBV-related liver diseases. We show nine of the most popular serum biomarkers and their models (i.e., serum cystatin C, homocysteine, C-reactive protein, C-reactive protein to albumin ratio, aspartate aminotransferase to platelet ratio index, fibrosis index based on four factors, gamma-glutamyl transpeptidase to platelet ratio, albumin-bilirubin score, and gamma-glutamyl transpeptidase to albumin ratio) that have gained great interest from clinicians. Compared with traditional scoring systems, these serum biomarkers and their models are easily acquired, simple, and relatively inexpensive. In the present review, we summarize the latest studies focused on these serum biomarkers and their models as diagnostic and prognostic indexes in HBV-related liver diseases.
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Li X, Cheng Y, Zhong X, Zhang B, Bao Z, Zhang Y, Wang Z. Nuclear factor erythroid 2-related factor 2 activation mediates hyperhomocysteinemia-associated lipolysis suppression in adipocytes. Exp Biol Med (Maywood) 2018; 243:926-933. [PMID: 30105954 PMCID: PMC6108053 DOI: 10.1177/1535370218788520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/19/2018] [Indexed: 12/18/2022] Open
Abstract
Hyperhomocysteinemia (HHcy) is associated with suppressed lipolytic response in adipocytes/adipose tissue, however, the underlying mechanism remains to be extensively studied. Nuclear factor erythroid 2-related factor 2 (Nrf2), a master transcriptional factor regulating antioxidant generation, has been recently reported to mediate lipid metabolism. Employing both fully differentiated 3T3-L1 adipocytes and male C57BL/6 mice, in the present study, we investigated the potential involvement of Nrf2 activation in HHcy-mediated lipolytic suppression. Our results showed that homocysteine (Hcy) treatment resulted in suppressed lipolysis, evidenced by increased intracellular triglyceride (TG) accumulation, decreased glycerol and free fatty acid (FFA) in fully differentiated 3T3-L1 adipocytes. Interestingly, Hcy exposure was associated with Nrf2 activation in adipocytes. Further studies showed that Nrf2 knockdown via siRNA transfection ameliorated Hcy-induced glycerol release in adipocytes. On the contrary, Nrf2 activators, epigallocatechin gallate (EGCG) and tert-butylhydroquinone (t-BHQ), increased intracellular TG content and decreased glycerol release in adipocytes. Importantly, our in vitro observations were corroborated by our in vivo findings, in which Hcy feeding (0.1% wt/vol) for four weeks induced Nrf2 expression in adipose tissue and lowered circulating FFA and glycerol levels in mice. Furthermore, EGCG injection (5 mg/kg/d) decreased circulating glycerol levels in comparison to the control group in mice. In conclusion, these results indicated that Nrf2 activation in response to HHcy plays an important role in mediating Hcy-suppressed lipolysis in adipocytes.
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Affiliation(s)
- Xin Li
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, Heilongjiang, P. R. China
| | - Yuhong Cheng
- Daqing Medical College, Daqing 163312, Heilongjiang, P.R. China
| | - Xiuli Zhong
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, Heilongjiang, P. R. China
| | - Bing Zhang
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, Heilongjiang, P. R. China
| | - Zhiwei Bao
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, Heilongjiang, P. R. China
| | - Yi Zhang
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, Heilongjiang, P. R. China
| | - Zhigang Wang
- College of Medical Laboratory Science and Technology, Harbin Medical University (Daqing), Daqing 163319, Heilongjiang, P. R. China
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Abstract
BACKGROUND AND AIMS The diagnosis of spontaneous bacterial peritonitis (SBP) depends primarily on a polymorphonuclear leukocyte cell count more than 250/mm. This method is invasive, and not diagnostic in all variants of SBP; we aimed to assess serum homocysteine as a precise indicative marker for the diagnosis of all variants of SBP. PATIENTS AND METHODS A total 323 consecutive ascitic patients were registered in this prospective work. Serum and ascitic fluid of homocysteine were evaluated utilizing an enzyme-linked immunosorbent assay. RESULTS Participants were classified into a non-SBP group, including 262 participants and 61 patients with SBP. Serum and ascitic homocysteine were considerably elevated in the SBP group than in the non-SBP group (17.94±7.57 vs. 11.75±5.68 μmol/l; P<0.001 and 14.70±5.45 vs. 9.75±4.55 μmol/l; P<0.001). At a cutoff value of 17.79 μmol/l, serum homocysteine had 89.3% specificity and 95.1% sensitivity for distinguishing SBP (area under the curve: 0.932) and, at a cutoff value of 16.1 μmol/l, ascitic homocysteine had 84.4% specificity and 92.7% sensitivity for distinguishing SBP (area under the curve: 0.901). Both were positively correlated with the polymorphonuclear count, C-reactive protein, Child-Pugh score, and Model For End-Stage Liver Disease score as well as negatively correlated with the protein content in the ascitic fluid and estimated glomerular filtration rate. After SBP therapy, there was a marked reduction in serum and ascitic homocysteine levels. CONCLUSION This study demonstrates that serum and ascitic homocysteine are considerably higher in SBP participants versus non-SBP patients. Serum homocysteine may provide a reliable and noninvasive diagnostic marker for all variants of SBP.
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Ingenbleek Y. Lean Body Mass Harbors Sensing Mechanisms that Allow Safeguarding of Methionine Homeostasis. Nutrients 2017; 9:nu9091035. [PMID: 28930162 PMCID: PMC5622795 DOI: 10.3390/nu9091035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/14/2017] [Accepted: 09/16/2017] [Indexed: 01/16/2023] Open
Abstract
Protein-depleted states generate allosteric inhibition of liver cystathionine β-synthase (CBS), which governs the first enzymatic step of the transsulfuration cascade, resulting in upstream accretion of homocysteine (Hcy) in body fluids. A similar Hcy increase may arise from normal hepatocytes undergoing experimentally-induced impairment of betaine-homocysteine methyltransferase (BHTM) activity or from components of lean body mass (LBM) submitted to any inflammatory disorder. LBM comprises a composite agglomeration of extrarenal tissues characterized by naturally occurring BHTM inactivity. As a result of cellular injury, LBM releases high concentrations of Hcy into the extracellular space, contrasting with the disruption of normal remethylation pathways. Hyperhomocysteinemia acts as a biomarker, reflecting the severity of insult and operating as an alarm signal. Elevated Hcy levels constitute a precursor pool recognized by a CBS coding region that reacts to meet increased methionine requirements in LBM tissues, using its enhanced production in hepatocytes. Preservation of methionine homeostasis benefits from its high metabolic priority and survival value.
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Affiliation(s)
- Yves Ingenbleek
- Laboratory of Nutrition, Faculty of Pharmacy, University Louis Pasteur, F-67401 Strasbourg, France.
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Wang L, Bai G, Chen F. Human bone marrow mesenchymal stem cells suppress the proliferation of hepatic stellate cells by inhibiting the ubiquitination of p27. Biochem Cell Biol 2017; 95:628-633. [PMID: 28746817 DOI: 10.1139/bcb-2017-0127] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) have considerable therapeutic potential for the treatment of end-stage liver disease. Previous studies have demonstrated that BMSCs secrete growth factors and cytokines that inactivate hepatic stellate cells (HSCs), which inhibited the progression of hepatic fibrosis. The aim of this study was to determine the mechanism by which BMSCs suppress the function of HSCs in fibrosis. Our results showed that co-culture of BMSCs and HSCs induced cell cycle arrest at the G10/G1 phase and cell apoptosis of HSCs, which finally inhibited the cell proliferation of HSCs. Consistent with the cell cycle arrest, co-culture of BMSCs and HSCs increased the abundance of the cell cycle protein p27. Mechanistically, we further uncovered that following the co-culture with BMSCs, the expression level of the E3 ligase S-phase kinase-associated protein 2 (SKP2) that is responsible for the ubiquitination of p27 was decreased, which attenuated the ubiquitination of p27 and increased the stability of p27 in HSCs. Collectively, our results indicated the potential involvement of the SKP2-p27 axis for the inhibitory effect of BSMCs on the cell proliferation of HSCs.
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Affiliation(s)
- Liang Wang
- a Department of Hepatobiliary Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Guang Bai
- a Department of Hepatobiliary Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Fei Chen
- b Department of Ultrasound, The First Affiliated Hospital of Jinzhou Medical University, Gu Ta district, Jinzhou, Liao Ning province 121001, China
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Tung HC, Hsu SJ, Tsai MH, Lin TY, Hsin IF, Huo TI, Lee FY, Huang HC, Ho HL, Lin HC, Lee SD. Homocysteine deteriorates intrahepatic derangement and portal-systemic collaterals in cirrhotic rats. Clin Sci (Lond) 2017; 131:69-86. [DOI: 10.1042/cs20160470] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
In liver cirrhosis, the altered levels of vasoactive substances, especially endothelin-1 (ET-1) and nitric oxide (NO) lead to elevated intrahepatic resistance, increased portal-systemic collaterals and abnormal intra- and extra-hepatic vascular responsiveness. These derangements aggravate portal hypertension-related complications such as gastro-oesophageal variceal bleeding. Homocysteine, a substance implicated in cardiovascular diseases, has been found with influences on vasoresponsiveness and angiogenesis. However, their relevant effects in liver cirrhosis have not been investigated. In the present study, liver cirrhosis was induced by common bile duct ligation (BDL) in Sprague–Dawley rats. In acute study, the results showed that homocysteine enhanced hepatic vasoconstriction to ET-1 but decreased portal-systemic collateral vasocontractility to arginine vasopressin (AVP). Homocysteine down-regulated hepatic phosphorylated endothelial NO synthase (p-eNOS) and p-Akt protein expressions. Inducible NOS (iNOS) and cyclooxygenase (COX)-2 expressions were up-regulated by homocysteine in splenorenal shunt (SRS), the most prominent intra-abdominal collateral vessel. In chronic study, BDL or thioacetamide (TAA) rats received homocysteine or vehicle for 14 days. The results revealed that homocysteine increased hepatic collagen fibre deposition and fibrotic factors expressions in both BDL- and TAA-induced liver fibrotic rats. Portal-systemic shunting and expressions of mesenteric angiogenetic factors [vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), PDGF receptor β (PDGFRβ) and p-eNOS] were also increased in BDL rats. In conclusion, homocysteine is harmful to vascular derangements and liver fibrosis in cirrhosis.
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Affiliation(s)
- Hung-Chun Tung
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Shao-Jung Hsu
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Ming-Hung Tsai
- Chang Gung University College of Medicine and Division of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Te-Yueh Lin
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - I-Fang Hsin
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Division of Endoscopy Center for Diagnosis and Treatment, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Te-Ia Huo
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Fa-Yauh Lee
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Hui-Chun Huang
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Division of General Medicine, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hsin-Ling Ho
- Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Han-Chieh Lin
- Division of Gastroenterology and Hepatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Shou-Dong Lee
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan
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