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1.
  • Josefsson, Axel, 1984, et al. (författare)
  • Impact of peri-transplant heart failure & left-ventricular diastolic dysfunction on outcomes following liver transplantation
  • 2012
  • Ingår i: Liver International. - : Wiley. - 1478-3231 .- 1478-3223. ; 32:8, s. 1262-1269
  • Tidskriftsartikel (refereegranskat)abstract
    • Background & Aims: Assess the prevalence of peri-transplant heart failure and its potential relation to post-transplant morbidity and mortality. Methods: A retrospective study was performed on 234 consecutive cirrhotic patients undergoing liver transplantation in a single European center from 1999 to 2007 (mean age 52, 30% women, 36% with alcoholic liver disease, 24% with viral hepatitis, 18% cholestatic liver disease). Left ventricular diastolic dysfunction was defined as E/A ratio <= 1. We used the Boston classification for heart failure to assess the prevalence of peri-transplant heart failure. Patients were followed up for a mean of 4 years post-transplant (0.5-9 years). Results: Eighteen per cent of patients demonstrated diastolic dysfunction pretransplant. During the peri-transplantation period highly possible heart failure occurred in 27%. In logistic regression analysis, heart failure was independently related to lower mean arterial blood pressure (OR 0.94, 95% CR 0.91-0.98) and prolonged corrected QT time on ECG (OR 9.10, 95% CI 3.77-21.93) pretransplant. Peri-transplant mortality amounted to 5%, and was independently related to heart failure (OR 15.11, 95% CI 1.76-129.62) and the peri-transplant need of dialysis (OR 14.18, 95% CI 1.65-121.89). Heart failure was also associated with longer stay in the intensive care unit and peri-transplant cardiac events (P < 0.05). Long-term transplant-free mortality was independently related to diastolic dysfunction at baseline (Hazard ratio 4.82, 95% CI 1.78-13.06). Conclusion: Heart failure occurs in approximately a quarter of patients with cirrhosis following liver transplantation and it is an independent predictor of mortality and morbidity.
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  • Olsson, Rolf, et al. (författare)
  • Estrogen-progestogen therapy for low bone mineral density in primary biliary cirrhosis
  • 1999
  • Ingår i: Liver. - : Wiley. - 0106-9543. ; 19:3, s. 188-192
  • Tidskriftsartikel (refereegranskat)abstract
    • AIMS/BACKGROUND: Patients with primary biliary cirrhosis (PBC) often have osteoporosis of the high-turnover type, suggesting that estrogen could have a beneficial effect. However, the cholestatic potential of estrogen could imply a risk of increased cholestasis in a disease characterized by cholestasis. The aim of the present study was to test whether hormone replacement therapy (HRT) could be used to increase bone mineral density (BMD) in PBC patients with osteoporosis, without causing deterioration of the liver function. METHODS: Nine female PBC patients with osteoporosis and one with osteopenia were offered HRT for two years. The change in BMD was compared to the change in ten age-matched female PBC patients who had less severe or no osteopenia and who did not receive HRT. Liver function tests were checked at six-month intervals. RESULTS: HRT patients showed a statistically significant increase in lumbar spine BMD and total body BMD whereas control patients showed a significant decrease in lumbar and total body BMD. In contrast to the controls, HRT patients also showed a decrease in truncal fat (-3.8%). Neither of the groups showed any statistically significant changes in the liver function tests. CONCLUSIONS: HRT is safe and effective in female PBC patients with osteoporosis.
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  • Rajani, Rupesh, et al. (författare)
  • Budd-Chiari syndrome in Sweden : epidemiology, clinical characteristics and survival - an 18-year experience
  • 2009
  • Ingår i: Liver international (Print). - Oxford : Blackwell Munksgaard. - 1478-3223 .- 1478-3231. ; 29:2, s. 253-259
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The exact incidence and prevalence of Budd-Chiari syndrome (BCS) is unknown in the general population. Published reports differ in terms of the clinical characteristics, effects of therapy and survival. AIMS: To investigate the epidemiology, clinical presentation and survival in patients with BCS. METHODS: Retrospective multicentre study in Sweden reviewing the medical records of all patients with BCS 1986-2003, identified from the computerised diagnosis database of 11 hospitals, including all university hospitals and liver transplantation centres. RESULTS: Forty-three patients with BCS were identified, of whom nine (21%) had concomitant portal vein thrombosis. The mean age-standardised incidence and prevalence rates in 1990-2001 were calculated to be 0.8 per million per year and 1.4 per million inhabitants respectively. Myeloproliferative disorders (38%), thrombophilic factors (31%) and oral contraceptives (30%) were common aetiological factors. Two or more risk factors were present in 44%. In 23%, no risk factor was evident. The median follow-up time was 2.7 years. Seventy-two percent were on anticoagulant therapy during follow-up. Transjugular intrahepatic portosystemic shunting, surgical shunting procedures and liver transplantation were performed in 4, 6 and 18 patients respectively. Nineteen patients died. The overall transplantation-free survival at 1, 5 and 10 years was 47, 28 and 17% respectively. CONCLUSIONS: Budd-Chiari syndrome is a rare disorder; the mean age-standardised incidence and prevalence rates in Sweden in 1990-2001 were calculated to be 0.8 per million per year and 1.4 per million inhabitants respectively. The presence of a myeloproliferative disorder was a common aetiological factor in our cohort and about half of the patients had a multifactorial aetiology. The transplantation-free survival was poor.
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4.
  • Baba, Hideo A., et al. (författare)
  • Survivin is upregulated during liver regeneration in rats and humans and is associated with hepatocyte proliferation
  • 2009
  • Ingår i: Liver international. - : Wiley. - 1478-3223 .- 1478-3231. ; 29:4, s. 585-592
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND:Survivin regulates cell division and inhibits apoptosis. Liver regeneration is a complex process involving both proliferation and apoptosis. The role of survivin is not well elucidated and no data exist in humans.METHODS: Seventy per cent liver resection was used to investigate liver regeneration in rats. Survivin was identified by means of reverse transcriptase polymerase chain reaction, Western blotting and immunohistochemistry. Proliferation and apoptosis were quantified. Liver biopsies from 33 patients who underwent living donor liver transplantation were used to study survivin immuno-expression, proliferation and apoptosis within the first 17 days after transplantation. Seven healthy donors served as controls.RESULTS:Survivin transcript and protein were significantly upregulated in rat hepatocytes after 24-72 h during regeneration and showed a significant correlation with proliferation but not with apoptosis. In humans, survivin was nearly absent in donor and reperfused liver tissue but increased significantly 5-7 days after transplantation and correlated with proliferation but not with apoptosis.CONCLUSIONS: Survivin is upregulated in human and rodent liver regeneration and correlates with proliferation, suggesting an association of survivin and cell division.
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5.
  • Benito de Valle, Maria, et al. (författare)
  • Mortality and cancer risk related to primary sclerosing cholangitis in a Swedish population-based cohort.
  • 2012
  • Ingår i: Liver international : official journal of the International Association for the Study of the Liver. - : Wiley. - 1478-3231. ; 32:3, s. 441-448
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Population-based studies on the epidemiology of primary sclerosing cholangitis (PSC) are sparse. Aims: To investigate mortality and risk of cancer, and to identify risk factors for hepatobiliary cancer and the combined end-point liver related death or liver transplantation (OLT) in a population-based PSC cohort in Västra Götaland, Sweden. Methods: Primary sclerosing cholangitis cases were identified in diagnostic registries. Case validation and follow up was provided through individual review of case files and linkage to the Swedish Cancer and Cause of Death registries. Standardized mortality ratio (SMR) and standardized incidence ratio (SIR) for cancer were calculated in relation to the background population. Cox's proportional hazards analysis was used to calculate crude and adjusted relative risks (RRs). Results: A total of 199 PSC patients were identified between 1992 and 2005. SMR in the PSC cohort was 4.20 (95% confidence interval (CI), 3.01–5.69). SIR for hepatobiliary cancer, cholangiocarcinoma and colorectal cancer were 177 (110–271), 868 (505–1390) and 2.87 (0.33–10.4) respectively. Age (RR=1.25 (1.01–1.53) per decade), female gender (RR=2.01 (1.09–3.72)), cholangitis (RR=2.56 (1.20–5.64)) and bilirubin (RR=3.95 (1.96–10.75) highest vs lowest quartile) were associated with the risk of liver related death or OLT. Age was associated with the risk of hepatobiliary cancer (RR 1.40 (1.01–1.95) per decade). Conclusions: Primary sclerosing cholangitis was associated with a four-fold increase in mortality in this population-based study. In accordance with previous studies, the risk of hepatobiliary cancer was dramatically increased. However, the increased risk of colorectal cancer reported in previous studies could not be confirmed.
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  • Linder, S, et al. (författare)
  • Determination of cell death modes using circulating biomarkers
  • 2012
  • Ingår i: Liver international : official journal of the International Association for the Study of the Liver. - : Wiley. - 1478-3231. ; 32:2, s. 347-348
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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  • Nyblom, Helena, 1968, et al. (författare)
  • The AST/ALT ratio as an indicator of cirrhosis in patients with PBC.
  • 2006
  • Ingår i: Liver international : official journal of the International Association for the Study of the Liver. - : Wiley. - 1478-3223 .- 1478-3231. ; 26:7, s. 840-5
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES: A non-invasive, simple and non-expensive test to predict cirrhosis would be highly desirable. The aspartate aminotransferase/alanine aminotransferase (AST/ALT) ratio has been proven to be such an indicator of cirrhosis in alcoholic liver disease, hepatitis C. AIM: To test whether the AST/ALT ratio is a marker of cirrhosis also in patients with primary biliary cirrhosis (PBC). METHODS: The study consisted of 160 patients. In 126 patients, we had clinical and laboratory data at the time of diagnosis and follow-up with outcome: liver-related death, liver transplantation and survival. In 121 patients, we had laboratory data and liver histology. RESULTS: We found that the AST/ALT ratio was significantly higher in cirrhotic patients than in non-cirrhotic patients. A high AST/ALT ratio was significantly associated with esophageal varices and ascites. In a multivariate analysis, bilirubin and ALP were predictors of poor prognosis. CONCLUSION: The AST/ALT ratio seems to be of clinical value as a hint to the diagnosis of cirrhosis in patients with PBC but not as a prognostic factor.
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  • Aleman, Soo, et al. (författare)
  • Frequent loss to follow-up after diagnosis of hepatitis C virus infection : A barrier towards the elimination of hepatitis C virus
  • 2020
  • Ingår i: Liver international (Print). - : Wiley-Blackwell Publishing Inc.. - 1478-3223 .- 1478-3231. ; 40:8, s. 1832-1840
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Previous studies on hepatitis C cascade of care have been mainly focused on diagnosis and treatment rate, while less attention has been given to patients lost to follow-up (LTFU) after diagnosis. Analyses of this latter issue on population level are missing.AIMS: In this nationwide study of people with HCV, we aimed to estimate the proportion LTFU after HCV diagnosis, characterize them, and analyze their other healthcare contacts.METHODS: Patients diagnosed with chronic HCV in the Swedish National Patient register during 2001-2011 and still alive December 31, 2013, were included. The number of cured patients without need of follow-up was estimated. Visits to HCV specialist care during 2012-2013 were analysed. For those LTFU, other specialist care contacts were studied.RESULTS: In total 29,217 patients were included, with 24,733 with need of HCV care. 61% (n=15,007) of them were LTFU from HCV care in 2012-2013 and 58% did not attend HCV care during the second year after HCV diagnosis. The departments of surgery/orthopedic or psychiatry/dependency were the most common other non-primary healthcare contacts. Predictors for LTFU were young age, male sex, low education, presence of psychiatric/dependency diagnosis, unmarried, and longer duration since diagnosis of HCV.CONCLUSIONS: This study showed that almost two-thirds of patients were LTFU after HCV diagnosis, with frequent occurrence early after diagnosis. Efforts to link patients back to HCV care, in combination with early and easy access to HCV treatment and harm reduction, are necessary to reach the HCV elimination goal.
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14.
  • Balkhed, Wile, et al. (författare)
  • Repeated measurements of non-invasive fibrosis tests to monitor the progression of non-alcoholic fatty liver disease : A long-term follow-up study
  • 2022
  • Ingår i: Liver international (Print). - Chichester, United Kingdom : John Wiley & Sons. - 1478-3223 .- 1478-3231. ; 42:7, s. 1546-1556
  • Tidskriftsartikel (refereegranskat)abstract
    • Background and Aims: The presence of advanced hepatic fibrosis is the prime marker for the prediction of liver-related complications in non-alcoholic fatty liver disease (NAFLD). Blood-based non-invasive tests (NITs) have been developed to evaluate fibrosis and identify patients at risk. Current guidelines propose monitoring the progression of NAFLD using repeated NITs at 2-3-year intervals. The aim of this study was to evaluate the association of changes in NITs measured at two time points with the progression of NAFLD.Methods. We retrospectively included NAFLD patients with NIT measurements in whom the baseline hepatic fibrosis stage had been assessed by biopsy or transient elastography (TE). Subjects underwent follow-up visits at least 1 year from baseline to evaluate the progression of NAFLD. NAFLD progression was defined as the development of end-stage liver disease or fibrosis progression according to repeat biopsy or TE. The following NITs were calculated at baseline and follow-up: Fibrosis-4 (FIB-4), NAFLD fibrosis score (NFS), aspartate aminotransferase to platelet ratio index (APRI) and dynamic aspartate-to-alanine aminotransferase ratio (dAAR).Results: One hundred and thirty-five patients were included with a mean follow-up of 12.6 +/- 8.5 years. During follow-up, 41 patients (30%) were diagnosed with progressive NAFLD. Change in NIT scores during follow-up was significantly associated with disease progression for all NITs tested except for NFS. However, the diagnostic precision was suboptimal with area under the receiver operating characteristics 0.56-0.64 and positive predictive values of 0.28-0.36 at sensitivity fixed at 90%.Conclusions: Change of FIB-4, NFS, APRI, and dAAR scores is only weakly associated with disease progression in NAFLD. Our findings do not support repeated measurements of these NITs for monitoring the course of NAFLD.
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  • Bergquist, Annika, et al. (författare)
  • Impact on follow-up strategies in patients with primary sclerosing cholangitis
  • 2023
  • Ingår i: Liver international (Print). - Chichester, United Kingdom : Wiley-Blackwell Publishing Inc.. - 1478-3223 .- 1478-3231. ; 43:1, s. 127-138
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND & AIMS: Evidence for the benefit of scheduled imaging for early detection of hepatobiliary malignancies in primary sclerosing cholangitis (PSC) is limited. We aimed to compare different follow-up strategies in PSC with the hypothesis that regular imaging improves survival.METHODS: We collected retrospective data from 2,975 PSC patients from 27 centers. Patients were followed from the start of scheduled imaging or in case of clinical follow-up from January 1, 2000, until death or last clinical follow-up alive. The primary endpoint was all-cause mortality.RESULTS: A broad variety of different follow-up strategies were reported. All except one center used regular imaging, ultrasound (US) and/or magnetic resonance imaging (MRI). Two centers used scheduled ERCP in addition to imaging for surveillance purposes. The overall HR (CI95%) for death, adjusted for sex, age and start year of follow-up, were 0.61 (0.47-0.80) for scheduled imaging with and without ERCP; 0.64 (0.48-0.86) for US/MRI and 0.53 (0.37-0.75) for follow-up strategies including scheduled ERCP. The lower risk of death remained for scheduled imaging with and without ERCP after adjustment for cholangiocarcinoma (CCA) or high-grade dysplasia as a time-dependent covariate, HR 0.57 (0.44-0.75). Hepatobiliary malignancy was diagnosed in 175 (5.9%) of the patients at 7.9 years follow-up. Asymptomatic patients (25%) with CCA had better survival if scheduled imaging had been performed.CONCLUSIONS: Follow-up strategies vary considerably across centers. Scheduled imaging was associated with improved survival. Multiple factors may contribute to this result including early tumor detection and increased endoscopic treatment of asymptomatic benign biliary strictures.
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  • Blach, S., et al. (författare)
  • Hepatitis C Elimination in Sweden : Progress, Challenges and Opportunities for Growth in the time of COVID-19
  • 2021
  • Ingår i: Liver international. - : Wiley-Blackwell Publishing Inc.. - 1478-3223 .- 1478-3231. ; 41:9, s. 2024-2031
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND & AIMS: In 2014, the burden of hepatitis C virus (HCV) in Sweden was evaluated, to establish a baseline and inform public health interventions. Considering the changing landscape of HCV treatment, prevention, and care, and in light of the COVID-19 pandemic, this analysis seeks to evaluate Sweden's progress toward the WHO elimination targets and identify remaining barriers.METHODS: The data used for modeling HCV transmission and disease burden in Sweden were obtained through literature review, unpublished sources, and expert input. A dynamic Markov model was employed to forecast population sizes and incidence of HCV through 2030. Two scenarios ("2019 Base" and "WHO Targets") were developed to evaluate Sweden's progress toward HCV elimination.RESULTS: At the beginning of 2019, there were 29,700 (95% UI: 19,300 - 33,700) viremic infections in Sweden. Under the base scenario, Sweden would achieve and exceed the WHO targets for diagnosis, treatment, and liver-related death. However, new infections would decrease by less than 10%, relative to 2015. Achieving all WHO targets by 2030 would require 1) expanding harm reduction programs to reach more than 90% of PWID and 2) treating 90% of HCV+ PWID engaged in harm reduction programs and ≥7% of PWID not involved in harm reduction programs, annually by 2025.CONCLUSIONS: It is of utmost importance that Sweden, and all countries, find sustainability in HCV programs by broadening the setting and base of providers to provide stability and continuity of care during turbulent times.
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  • Burza, Maria Antonella, 1980, et al. (författare)
  • PNPLA3 I148M (rs738409) genetic variant and age at onset of at-risk alcohol consumption are independent risk factors for alcoholic cirrhosis
  • 2014
  • Ingår i: Liver International. - : Wiley. - 1478-3223 .- 1478-3231. ; 34:4, s. 514-520
  • Tidskriftsartikel (refereegranskat)abstract
    • Background & Aims Environmental and genetic factors contribute to alcoholic cirrhosis onset. In particular, age at exposure to liver stressors has been shown to be important in progression to fibrosis in hepatitis C individuals. However, no definite data on the role of age at onset of at-risk alcohol consumption are available. Moreover, patatin-like phospholipase domain-containing protein 3 (PNPLA3) I148M (rs738409) variant has been associated with alcoholic cirrhosis, but only in cross-sectional studies. The aim of this study was to investigate the role of age at onset of at-risk alcohol consumption and PNPLA3 I148M variant on alcoholic cirrhosis incidence. A total of 384 at-risk alcohol drinkers were retrospectively examined. The association among age at onset of at-risk alcohol consumption, PNPLA3 I148M variant and cirrhosis incidence was tested. A higher incidence of alcoholic cirrhosis was observed in individuals with an older (>= 24years) compared with a younger (<24) age at onset of at-risk alcohol consumption (P-value<0.001). Moreover, PNPLA3 148M allele carriers showed an increased incidence of cirrhosis (P-value<0.001). Both age at onset of at-risk alcohol consumption and PNPLA3148M allele were independent risk factors for developing cirrhosis (H.R. (95% C.I.): 2.76 (2.18-3.50), P-value<0.001; 1.53(1.07-2.19), P-value=0.021 respectively). The 148M allele was associated with a two-fold increased risk of cirrhosis in individuals with a younger compared with an older age at onset of at-risk alcohol consumption (H.R. (95% C.I.): 3.03(1.53-6.00) vs. 1.61(1.09-2.38). Age at onset of at-risk alcohol consumption and PNPLA3 I148M genetic variant are independently associated with alcoholic cirrhosis incidence.
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22.
  • de Mello, Vanessa D., et al. (författare)
  • Serum aromatic and branched-chain amino acids associated with NASH demonstrate divergent associations with serum lipids
  • 2021
  • Ingår i: Liver International. - : Wiley. - 1478-3223 .- 1478-3231. ; 41:4, s. 754-763
  • Tidskriftsartikel (refereegranskat)abstract
    • Background & Aims: Non-alcoholic fatty liver disease (NAFLD) has been associated with multiple metabolic abnormalities. By applying a non-targeted metabolomics approach, we aimed at investigating whether serum metabolite profile that associates with NAFLD would differ in its association with NAFLD-related metabolic risk factors. Methods & Results: A total of 233 subjects (mean ± SD: 48.3 ± 9.3 years old; BMI: 43.1 ± 5.4 kg/m2; 64 male) undergoing bariatric surgery were studied. Of these participants, 164 with liver histology could be classified as normal liver (n = 79), simple steatosis (SS, n = 40) or non-alcoholic steatohepatitis (NASH, n = 45). Among the identified fasting serum metabolites with higher levels in those with NASH when compared to those with normal phenotype were the aromatic amino acids (AAAs: tryptophan, tyrosine and phenylalanine), the branched-chain amino acids (BCAAs: leucine and isoleucine), a phosphatidylcholine (PC(16:0/16:1)) and uridine (all FDRp < 0.05). Only tryptophan was significantly higher in those with NASH compared to those with SS (FDRp < 0.05). Only the AAAs tryptophan and tyrosine correlated positively with serum total and LDL cholesterol (FDRp < 0.1), and accordingly, with liver LDLR at mRNA expression level. In addition, tryptophan was the single AA associated with liver DNA methylation of CpG sites known to be differentially methylated in those with NASH. Conclusions: We found that serum levels of the NASH-related AAAs and BCAAs demonstrate divergent associations with serum lipids. The specific correlation of tryptophan with LDL-c may result from the molecular events affecting LDLR mRNA expression and NASH-associated methylation of genes in the liver.
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  • De Vincentis, Antonio, et al. (författare)
  • Genetic variants in the MTHFR are not associated with fatty liver disease.
  • 2020
  • Ingår i: Liver international : official journal of the International Association for the Study of the Liver. - : Wiley. - 1478-3231. ; 40:8, s. 1934-1940
  • Tidskriftsartikel (refereegranskat)abstract
    • The common missense sequence variants of methylenetetrahydrofolate-reductase (MTHFR), rs1801131 (c.A1298C) and rs1801133 (c.C677T), favor the development of hyperhomocysteinemia and diminished DNA methylation. Previous studies, carried out in small series and with suboptimal characterization of the hepatic phenotype, tested the association of these genetic variants with fatty liver disease (FLD), with conflicting results. Here, we assessed the association of rs1801131 and rs1801133 with hepatic phenotype in the Liver Biopsy Cross-Sectional Cohort, a large cohort (n=1375 from Italy and 411 from Finland) of European individuals with suspect FLD associated with dysmetabolism. A total of 1786 subjects were analyzed by ordinal regression analyses. The rs1801131 and the rs1801133 variants were not associated with steatosis, inflammation, ballooning, or fibrosis. The present study suggests that changes in folate and methionine metabolism resulting from these 2 variants are not associated with a clinically significant impact on FLD in Europeans.
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  • Dutta, Tanmoy, 1998, et al. (författare)
  • Mitochondrial amidoxime-reducing component 1 p.Ala165Thr increases protein degradation mediated by the proteasome.
  • 2024
  • Ingår i: Liver international : official journal of the International Association for the Study of the Liver. - 1478-3223 .- 1478-3231. ; 44:5, s. 1219-1232
  • Tidskriftsartikel (refereegranskat)abstract
    • Metabolic dysfunction-associated steatotic liver disease (MASLD) is a global health concern with no effective and specific drug treatment available. The rs2642438 minor allele in mitochondrial amidoxime-reducing component 1 (MARC1) results in an aminoacidic substitution (p.Ala165Thr) and associates with protection against MASLD. However, the mechanisms behind this protective effect are unknown. In this study, we examined the consequences of this aminoacidic substitution on protein stability and subcellular localization.We overexpressed the human MARC1 A165 (wild-type) or 165T (mutant) invivo in mice and invitro in human hepatoma cells (HepG2 and HuH-7), generated several mutants at position 165 by insitu mutagenesis and then examined protein levels. We also generated HepG2 cells stably overexpressing MARC1 A165 or 165T to test the effect of this substitution on MARC1 subcellular localization.MARC1 165T overexpression resulted in lower protein levels than A165 both invivo and invitro. Similarly, any mutant at position 165 showed lower protein levels compared to the wild-type protein. We showed that the 165T mutant protein is polyubiquitinated and its degradation is accelerated through lysine-48 ubiquitin-mediated proteasomal degradation. We also showed that the 165T substitution does not affect the MARC1 subcellular localization.This study shows that alanine at position 165 in MARC1 is crucial for protein stability, and the threonine substitution at this position leads to a hypomorphic protein variant due to lower protein levels. Our result supports the notion that lowering hepatic MARC1 protein level may be a successful therapeutic strategy for treating MASLD.
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