Background: Iron overload has been reported in alcoholic liver cirrhosis but it remains to be established whether iron is involved in inducing oxidative damage to erythrocytes in alcoholic cirrhosis. The aim of this study was to assess oxidative damage and red cell indicators of antioxidant defences in alcoholics with mild-to-severe liver cirrhosis, taking into account the iron status.
Materials And Methods: Twenty-nine patients with alcoholic liver cirrhosis (AC) and 27 with nonalcoholic cirrhosis (NAC) were studied. Serum lipid peroxides (LPO) were assayed by a colourimetric method. Serum-free malonyldialdehyde (MDA) was assayed by selected ion monitoring in positive chemical ionization; serum 4-hydroxy-2(E)-nonenal (4-HNE) was determined by a colorimetric method. Reduced (GSH) and oxidized glutathione (GSSG), adenine and pyridine cofactors were assayed in whole blood extracts by HPLC. Hexose-monophosphate shunt (HMPS), glycolytic pathway (EMP) and antioxidant enzyme activities were determined by standard methods. Iron status was evaluated by standard clinical chemistry and by histological grading of liver iron. Nontransferrin-bound iron (NTBI) was measured in serum by HPLC.
Results: GSH progressively decreased with increasing severity of liver involvement in AC and NAC. MDA, 4-HNE and NTBI were significantly higher in AC serum. Stimulation of red cell HMPS and reducing potential, in terms of NADPH production, were more pronounced in AC.
Conclusions: These results suggest that NTBI is more important than the decrease of antioxidant defences in inducing lipid peroxidation. NTBI may play a catalytic role in free radical reactions in the presence of cellular reductants such as NADPH.
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http://dx.doi.org/10.1046/j.1365-2362.2002.0320s1021.x | DOI Listing |
FASEB J
January 2025
Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Ghrelin reduced the profibrotic effect of IHC-Exo in liver fibrosis by regulating lncMALAT1/GPX4 pathway mediated HSCs ferroptosis. Triggering HSCs ferroptosis via GHR-IHC-Exo may become a novel strategy to alleviate the progression of liver fibrosis. Liver fibrosis is the end stage of the continuous progression of a variety of chronic liver diseases.
View Article and Find Full Text PDFClin Transl Gastroenterol
January 2025
Division of Gastroenterology and Liver Diseases, University of Southern California, Los Angeles, California.
Introduction: "Healthcare contact days" is a patient-centered quantitative proxy for time toxicity, which can be informative for liver transplant (LT) decision-making. We aimed to (i) quantify contact days in patients with cirrhosis pre- and post-LT; (ii) identify clinical and demographic features associated with contact days.
Methods: Using a national health system database, we calculated healthcare contact days (inpatient, outpatient hospital [e.
Clin Transl Gastroenterol
January 2025
Bausch Health, Bridgewater, NJ, USA.
Objectives: Describing cirrhosis and hepatic encephalopathy (HE) burden over time can inform clinical management and resource allocation. Using health care claims data, this observational study examined recent trends in the prevalence of cirrhosis and HE and associated health care resource utilization among commercially and Medicare-insured adults in the United States (US).
Methods: Data from the MarketScan Commercial Claims and Encounters Database and 100% Medicare Research Identifiable Files were analyzed (2007-2020).
Cureus
December 2024
Department of Clinical Immunology and Allergology, Iuliu Hatieganu University of Medicine and Pharmacy of Cluj, Cluj-Napoca, ROU.
Macrotrabecular-massive hepatocellular carcinoma (MTM-HCC) is a rare and aggressive molecular subtype of hepatocellular carcinoma (HCC) associated with a poor prognosis. Unlike typical HCC, which commonly arises in the context of cirrhosis, MTM-HCC can develop in non-cirrhotic livers, presenting unique diagnostic and therapeutic challenges. This case report describes a 35-year-old male who presented with persistent epigastric pain, fatigue, and loss of appetite.
View Article and Find Full Text PDFJ Clin Exp Hepatol
September 2024
Department of Gastroenterology and hepatology, Baylor College of Medicine, Houston, TX, USA.
Background: Sarcopenia, a key aspect of malnutrition in liver cirrhosis (LC), affects 30-70% of LC patients. Given the inconsistent results from RCTs on branched-chain amino acids (BCAAs) for treating sarcopenia in LC, we conducted a systematic review and meta-analysis to assess the efficacy and safety of BCAAs for sarcopenia management in LC patients.
Methods: A systematic review and meta-analysis synthesizing evidence from RCTs obtained from PubMed, Embase, Cochrane, Scopus, and Web of Science from inception to April 2024.
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