Objectives: In this study, we examined the activities of key peroxisomal enzymes in peripheral blood lymphocytes (PBLs) of pediatric liver transplant patients.
Subjects And Methods: Venous blood was drawn from 14 patients aged 5-16 years on FK-506 treatment and 18 healthy subjects for isolation of lymphocytes. β-Oxidation of very long chain fatty acids (VLCFAs) and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), NADPH oxidase (NOX), catalase and peroxisomal enzyme acyl CoA oxidase (ACO) were measured in cellular homogenates. Levels of malondialdehyde (MDA) were measured as an index of lipid peroxidation. Protein content and mRNA levels of catalase, peroxisomal membrane protein-70 (PMP-70) and ACO were measured using Western blotting and PCR techniques.
Results: PBLs isolated from liver transplant patients showed significantly (p < 0.01) increased levels (226.9 ± 24.5 μmol/mg protein) of MDA as compared to the levels in controls (162.8 ± 19.6 μmol/mg protein), whereas enzyme activities of SOD and NOX remained unaltered in patients' cells. Enzyme activities of catalase and GPx were markedly (p < 0.01) decreased in cells isolated from liver transplant patients. ACO activity and β-oxidation of VLCFAs in PBLs from liver transplant patients were however found to be significantly increased by 38 and 52% respectively when compared with controls. Gene expression of PMP-70 and ACO was also significantly increased (p < 0.01) in PBLs of patients.
Conclusion: Our results clearly showed that peroxisomal metabolic activities are markedly altered in lymphocytes of liver transplant patients and might contribute to the development of cellular oxidative stress.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000334491 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Institut Mutualiste Montsouris classification is associated with postoperative portal vein thrombosis in laparoscopic liver resection.
Surg Endosc
January 2025
Department of Hepatobiliary Pancreatic and Transplant Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan.
Background: Laparoscopic liver resection (LLR) is a surgical procedure with varying degrees of difficulty depending on tumor status and surgical technique. Therefore, we aimed to evaluate the relationship between surgical difficulty levels and outcomes of LLR, particularly portal vein thrombosis (PVT).
Methods: We performed LLRs in 214 patients between January 2009 and December 2022.
Stromal architecture and fibroblast subpopulations with opposing effects on outcomes in hepatocellular carcinoma.
Cell Discov
January 2025
Department of Liver Surgery and Transplantation, and Key Laboratory of Carcinogenesis and Cancer Invasion (Ministry of Education), Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China.
Dissecting the spatial heterogeneity of cancer-associated fibroblasts (CAFs) is vital for understanding tumor biology and therapeutic design. By combining pathological image analysis with spatial proteomics, we revealed two stromal archetypes in hepatocellular carcinoma (HCC) with different biological functions and extracellular matrix compositions. Using paired single-cell RNA and epigenomic sequencing with Stereo-seq, we revealed two fibroblast subsets CAF-FAP and CAF-C7, whose spatial enrichment strongly correlated with the two stromal archetypes and opposing patient prognosis.
View Article and Find Full Text PDFUpdate on Hepatorenal Syndrome: From Pathophysiology to Treatment.
Annu Rev Med
January 2025
Division of Gastrointestinal and Liver Diseases, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; email:
Hepatorenal syndrome-acute kidney injury (HRS-AKI) occurs in the setting of advanced chronic liver disease, portal hypertension, and ascites. HRS-AKI is found in ∼20% of patients presenting to the hospital with AKI, but it may coexist with other causes of AKI and/or with preexisting chronic kidney disease, thereby making the diagnosis challenging. Novel biomarkers such as urinary neutrophil gelatinase-associated lipocalin may be useful.
View Article and Find Full Text PDFFactor V Serves as an Early Biomarker for Graft Loss After Liver Transplant: A Prospective Evaluation.
Clin Transplant
February 2025
Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada.
Background: Low post-operative day (POD) 1 Factor V has been retrospectively associated with graft loss after liver transplantation when stratified by a cutoff of 0.36 U/mL. We aimed to validate this prospectively.
View Article and Find Full Text PDFOutcomes of Liver Transplant for Hepatic Epithelioid Hemangioendothelioma.
Clin Transplant
February 2025
Division of Transplantation Surgery, Department of Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA.
Introduction: Hepatic epithelioid hemangioendothelioma (HEH) is a rare indication of liver transplant with limited evidence.
Methods: Adult recipients undergoing first-time liver-only transplant from 2002 to 2021 in the United States were identified using the UNOS/OPTN database. We compared post-transplant outcomes of recipients receiving liver transplant for HEH versus other diagnoses.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!