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1.
BMC Gastroenterol ; 24(1): 147, 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38724942

RESUMO

BACKGROUND: Metabolic-associated fatty liver disease (MAFLD) is defined as the occurrence of hepatic fat accumulation in patients with negligible alcohol consumption or any other cause of hepatic steatosis. This study aimed to correlate the ultrasound-based diagnosis of MAFLD with the histological diagnosis of nonalcoholic steatohepatitis (NASH) and alanine aminotransferase (ALT) levels in patients with MAFLD. METHODS: This was a hospital-based cross-sectional study of 71 patients with MAFLD diagnosed by ultrasound. Percutaneous liver biopsy was performed for histological evidence of NASH in all patients, regardless of liver function test (LFT) values, provided that they had no contraindications. Liver histology was graded using the NASH Clinical Research Network MAFLD Activity Score. The data obtained were entered into SPSS version 21 and analysed using descriptive and inferential statistics. The significance level was set at < 0.05. RESULTS: A total of 71 patients (26 males and 45 females) with MAFLD were included. Thirty-nine (76.5%) patients with MAFLD and normal ALT levels had NASH, while 14 (82.4%) had elevated ALT levels. There was no statistically significant difference in the histological grade of NASH between patients with normal and elevated ALT levels. A weak correlation was found between the severity of steatosis on ultrasound scan and NASH incidence (p = 0.026). The sensitivity and specificity of ALT levels for predicting NASH according to the area under the receiver operating characteristics (AUROC 0.590) at an ALT cut-off value of 27.5 IU/L were 55.8% and 64.7%, respectively. CONCLUSION: NASH can occur in patients with MAFLD, irrespective of alanine transaminase (ALT) levels, and ultrasound grading of the severity of steatosis cannot accurately predict NASH. Liver biopsy remains the investigation of choice.


Assuntos
Alanina Transaminase , Fígado , Hepatopatia Gordurosa não Alcoólica , Ultrassonografia , Humanos , Masculino , Feminino , Alanina Transaminase/sangue , Estudos Transversais , Hepatopatia Gordurosa não Alcoólica/diagnóstico por imagem , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/patologia , Hepatopatia Gordurosa não Alcoólica/sangue , Pessoa de Meia-Idade , Adulto , Fígado/patologia , Fígado/diagnóstico por imagem , Nigéria , Biópsia , Fígado Gorduroso/diagnóstico por imagem , Fígado Gorduroso/patologia , Fígado Gorduroso/sangue , Idoso , Índice de Gravidade de Doença , Curva ROC
2.
Cells ; 13(9)2024 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-38727268

RESUMO

Treatment strategies for steatohepatitis are of special interest given the high prevalence of obesity and fatty liver disease worldwide. This study aimed to investigate the potential therapeutic mechanism of L-carnitine (LC) and Ginkgo biloba leaf extract (GB) supplementation in ameliorating the adverse effects of hyperlipidemia and hepatosteatosis induced by a high-cholesterol diet (HCD) in an animal model. The study involved 50 rats divided into five groups, including a control group, a group receiving only an HCD, and three groups receiving an HCD along with either LC (300 mg LC/kg bw), GB (100 mg GB/kg bw), or both. After eight weeks, various parameters related to lipid and glucose metabolism, antioxidant capacity, histopathology, immune reactivity, and liver ultrastructure were measured. LC + GB supplementation reduced serum total cholesterol, triglyceride, low-density lipoprotein cholesterol, glucose, insulin, HOMA-IR, alanine transaminase, and aspartate transaminase levels and increased high-density lipoprotein cholesterol levels compared with those in the HCD group. Additionally, treatment with both supplements improved antioxidant ability and reduced lipid peroxidation. The histological examination confirmed that the combination therapy reduced liver steatosis and fibrosis while also improving the appearance of cell organelles in the ultrastructural hepatocytes. Finally, the immunohistochemical analysis indicated that cotreatment with LC + GB upregulated the immune expression of GLP-1 and ß-Cat in liver sections that were similar to those of the control animals. Mono-treatment with LC or GB alone substantially but not completely protected the liver tissue, while the combined use of LC and GB may be more effective in treating liver damage caused by high cholesterol than either supplement alone by regulating hepatic oxidative stress and the protein expression of GLP-1 and ß-Cat.


Assuntos
Carnitina , Suplementos Nutricionais , Dislipidemias , Ginkgo biloba , Fígado , Extratos Vegetais , Animais , Fígado/efeitos dos fármacos , Fígado/patologia , Fígado/metabolismo , Carnitina/farmacologia , Masculino , Ratos , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Dislipidemias/tratamento farmacológico , Dislipidemias/metabolismo , Fígado Gorduroso/tratamento farmacológico , Fígado Gorduroso/patologia , Fígado Gorduroso/metabolismo , Ratos Sprague-Dawley , Metabolismo dos Lipídeos/efeitos dos fármacos , Antioxidantes/farmacologia , Dieta Hiperlipídica/efeitos adversos , Extrato de Ginkgo
3.
Zhonghua Gan Zang Bing Za Zhi ; 32(4): 300-302, 2024 Apr 20.
Artigo em Chinês | MEDLINE | ID: mdl-38733182

RESUMO

Metabolic dysfunction-associated fatty liver disease (MASLD) is a major public health problem that seriously affects human health. At present, some good progress has been made in the research and development of new drugs for MASLD, but there is still great space for exploration. This paper summarizes and analyzes the reasons in the current clinical status and challenges for the research and development of new drugs for MASLD.


Assuntos
Fígado Gorduroso , Humanos , Fígado Gorduroso/metabolismo , Doenças Metabólicas , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico
4.
Zhonghua Gan Zang Bing Za Zhi ; 32(4): 346-353, 2024 Apr 20.
Artigo em Chinês | MEDLINE | ID: mdl-38733190

RESUMO

Objective: To explore the clinical features of fatty liver disease (FLD) from non-alcoholic fatty liver disease (NAFLD) to metabolic dysfunction-associated fatty liver disease (MASLD), so as to elucidate its clinical application value under three renames. Methods: Patients who were hospitalized in the Department of Hepatology, Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical University, from January 2020 to September 2023 and met the diagnosis of NAFLD, metabolic-associated fatty liver disease (MAFLD), or MASLD were selected as the research subjects. The clinical indicators differences among the three groups of patients were compared, mainly including general information (age, gender, body mass index, past history, etc.), serological indicators (liver and kidney function, blood lipids, blood sugar, coagulation function, etc.), non-invasive liver fibrosis indicators, fat attenuation parameters, etc. Measurement data were analyzed using ANOVA and the rank sum test, while count data were analyzed using the χ(2) test. Results: NAFLD, MAFLD, and MASLD prevalence rates among 536 cases were 64.0%, 93.7%, and 100%, respectively. 318 cases (59.3%) met the three fatty liver names at the same time among them. Male population proportions in NAFLD, MAFLD, and MASLD were 30.9%, 55.8%, and 53.9%, respectively. The alcohol consumption history proportion was 0, 36.7%, and 36.0%, respectively. The smoking history proportion was 7.0%, 31.9%, and 30.6%, respectively. The body mass index was (27.66 ± 3.97), (28.33 ± 3.63), and (27.90 ± 3.89) kg/m(2), respectively. The γ-glutamyltransferase levels were 26.6 (18.0, 47.0) U/L, 31.0 (20.0, 53.0) U/L, and 30.8 (19.8, 30.8) U/L, respectively. The high-density lipoprotein cholesterol levels were 1.07 (0.90, 1.23) mmol/L, 1.02 (0.86, 1.19) mmol/L, and 1.03 (0.87,1.21) mmol/L, respectively. Sequentially measured uric acid was (322.98 ± 84.51) µmol/L, (346.57 ± 89.49) µmol/L, and (344.89 ±89.67) µmol/L, respectively. Sequentially measured creatinine was 69.6 (62.9, 79.0) µmol/L, 73.0 (65.0, 83.5) µmol/L, and 73.0 (65.0, 83.0) µmol/L, respectively. The sequential analysis of obesity proportion was 74.3%, 81.7%, and 76.5%, respectively, with statistically significant differences (P<0.05). Conclusion: Compared with the NAFLD population, the MAFLD and MASLD populations were predominantly male, obese, and had a history of smoking and drinking. The levels of γ-glutamyltransferase, uric acid, and creatinine were slightly higher, while the levels of high-density lipoprotein cholesterol were lower. MASLD appeared in NAFLD and MAFLD on the basis of inheritance and progression, emphasizing once again the important role of metabolic factors in a fatty liver.


Assuntos
Hepatopatia Gordurosa não Alcoólica , Humanos , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/diagnóstico , Hepatopatia Gordurosa não Alcoólica/sangue , Hepatopatia Gordurosa não Alcoólica/epidemiologia , Índice de Massa Corporal , Fígado Gorduroso/metabolismo , Fígado Gorduroso/sangue , Masculino , Feminino , Pessoa de Meia-Idade , Doenças Metabólicas/diagnóstico , Doenças Metabólicas/epidemiologia
5.
J Coll Physicians Surg Pak ; 34(5): 617-619, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38720227

RESUMO

This cross-sectional study was aimed to compare insulin resistance, Triglyceride- Glucose (TyG) index, fatty liver index (FLI) and hepatic steatosis index (HSI), glycaemic and lipids among groups/quartiles based upon estimated Glucose Disposal Rate (eGDR) from August 2022 to December 2022 among 249 male participants. The eGDR results in (mg/kg/min) were divided into four quartiles as: Group-I: {<6.88, n = 62}, Group-II: {<6.88-9.45, n = 63}, Group-III: {9.46-10.39, n = 62}, and Group-IV: {>10.39, n = 62}. Fasting plasma glucose (FPG), HbA1c, low density lipoprotein (LDL), homeostasis model assessment for insulin-resistance (HOMAIR), and TyG index demonstrated significant worsening increase from high to low eGDR groups. Receiver operating curve (ROC) analysis to calculate area under curve (AUC) for diagnostic efficiency candidate indices for eGDR demonstrated highest AUC for FLI as AUC: 0.736 (95% CI: 0.669-0.803), p < 0.001, followed by FPG: AUC: 0.682 (95% CI: 0.606-0.757), HOMAIR: AUC: 0.670 (95% CI: 0.602-0.739), HSI: AUC: 0.660 (95% CI: 0.589-0.731), TyG index: 0.658 (95% CI: 0.583-0.732), and HbA1c: 0.639 (95% CI: 0.583-0.732). Glycaemic measures, lipid indices, insulin resistance and TyG index deteriorated with declining eGDR. Diagnostic performance as evaluated by AUC for eGDR was highest for FLI, followed by FPG, HOMAIR, HSI, TyG index, HbA1c, and triglycerides. Key Words: Triglyceride, Insulin, Glucose, Diabetes.


Assuntos
Glicemia , Homeostase , Resistência à Insulina , Triglicerídeos , Humanos , Resistência à Insulina/fisiologia , Masculino , Triglicerídeos/sangue , Estudos Transversais , Glicemia/metabolismo , Homeostase/fisiologia , Adulto , Pessoa de Meia-Idade , Fígado Gorduroso/diagnóstico , Fígado Gorduroso/sangue , Hemoglobinas Glicadas/metabolismo , Hemoglobinas Glicadas/análise
6.
Mol Cancer ; 23(1): 95, 2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38720319

RESUMO

BACKGROUND: Dysregulation of immune surveillance is tightly linked to the development of metabolic dysfunction-associated steatohepatitis (MASH)-driven hepatocellular carcinoma (HCC); however, its underlying mechanisms remain unclear. Herein, we aimed to determine the role of interleukin-21 receptor (IL-21R) in MASH-driven HCC. METHODS: The clinical significance of IL-21R was assessed in human HCC specimens using immunohistochemistry staining. Furthermore, the expression of IL-21R in mice was assessed in the STAM model. Thereafter, two different MASH-driven HCC mouse models were applied between IL-21R-deficient mice and wild type controls to explore the role of IL-21R in MASH-driven HCC. To further elucidate the potential mechanisms by which IL-21R affected MASH-driven HCC, whole transcriptome sequencing, flow cytometry and adoptive lymphocyte transfer were performed. Finally, flow cytometry, enzyme-linked immunosorbent assay, immunofluorescent staining, chromatin immunoprecipitation assay and western blotting were conducted to explore the mechanism by which IL-21R induced IgA+ B cells. RESULTS: HCC patients with high IL-21R expression exhibited poor relapse-free survival, advanced TNM stage and severe steatosis. Additionally, IL-21R was demonstrated to be upregulated in mouse liver tumors. Particularly, ablation of IL-21R impeded MASH-driven hepatocarcinogenesis with dramatically reduction of lipid accumulation. Moreover, cytotoxic CD8+ T lymphocyte activation was enhanced in the absence of IL-21R due to the reduction of immunosuppressive IgA+ B cells. Mechanistically, the IL-21R-STAT1-c-Jun/c-Fos regulatory axis was activated in MASH-driven HCC and thus promoted the transcription of Igha, resulting in the induction of IgA+ B cells. CONCLUSIONS: IL-21R plays a cancer-promoting role by inducing IgA+ B cells in MASH-driven hepatocarcinogenesis. Targeting IL-21R signaling represents a potential therapeutic strategy for cancer therapy.


Assuntos
Linfócitos B , Carcinoma Hepatocelular , Fígado Gorduroso , Imunoglobulina A , Neoplasias Hepáticas , Transdução de Sinais , Animais , Humanos , Masculino , Camundongos , Linfócitos B/metabolismo , Linfócitos B/imunologia , Carcinoma Hepatocelular/metabolismo , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/etiologia , Carcinoma Hepatocelular/imunologia , Carcinoma Hepatocelular/genética , Linhagem Celular Tumoral , Modelos Animais de Doenças , Fígado Gorduroso/metabolismo , Fígado Gorduroso/patologia , Fígado Gorduroso/etiologia , Regulação Neoplásica da Expressão Gênica , Imunoglobulina A/metabolismo , Subunidade alfa de Receptor de Interleucina-21/metabolismo , Subunidade alfa de Receptor de Interleucina-21/genética , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/etiologia , Neoplasias Hepáticas/imunologia , Neoplasias Hepáticas/genética , Receptores de Interleucina-21/metabolismo , Receptores de Interleucina-21/genética
7.
Med ; 5(5): 375-376, 2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38733968

RESUMO

The most important factor associated with liver-related mortality in NAFLD is liver fibrosis. There is no approved treatment for metabolic dysfunction-associated steatohepatitis (MASH) or liver fibrosis. In the MAESTRO-NASH trial, Harrison et al.1 demonstrated the efficacy of resmetirom, a selective THR-ß agonist, for the treatment of MASH and liver fibrosis at 52 weeks.


Assuntos
Cirrose Hepática , Humanos , Cirrose Hepática/metabolismo , Cirrose Hepática/tratamento farmacológico , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Fígado Gorduroso/metabolismo , Propionatos , Chalconas
8.
Pharmacol Rev ; 76(3): 454-499, 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38697855

RESUMO

Steatotic liver disease (SLD) displays a dynamic and complex disease phenotype. Consequently, the metabolic dysfunction-associated steatotic liver disease (MASLD)/metabolic dysfunction-associated steatohepatitis (MASH) therapeutic pipeline is expanding rapidly and in multiple directions. In parallel, noninvasive tools for diagnosing and monitoring responses to therapeutic interventions are being studied, and clinically feasible findings are being explored as primary outcomes in interventional trials. The realization that distinct subgroups exist under the umbrella of SLD should guide more precise and personalized treatment recommendations and facilitate advancements in pharmacotherapeutics. This review summarizes recent updates of pathophysiology-based nomenclature and outlines both effective pharmacotherapeutics and those in the pipeline for MASLD/MASH, detailing their mode of action and the current status of phase 2 and 3 clinical trials. Of the extensive arsenal of pharmacotherapeutics in the MASLD/MASH pipeline, several have been rejected, whereas other, mainly monotherapy options, have shown only marginal benefits and are now being tested as part of combination therapies, yet others are still in development as monotherapies. Although the Food and Drug Administration (FDA) has recently approved resmetirom, additional therapeutic approaches in development will ideally target MASH and fibrosis while improving cardiometabolic risk factors. Due to the urgent need for the development of novel therapeutic strategies and the potential availability of safety and tolerability data, repurposing existing and approved drugs is an appealing option. Finally, it is essential to highlight that SLD and, by extension, MASLD should be recognized and approached as a systemic disease affecting multiple organs, with the vigorous implementation of interdisciplinary and coordinated action plans. SIGNIFICANCE STATEMENT: Steatotic liver disease (SLD), including metabolic dysfunction-associated steatotic liver disease and metabolic dysfunction-associated steatohepatitis, is the most prevalent chronic liver condition, affecting more than one-fourth of the global population. This review aims to provide the most recent information regarding SLD pathophysiology, diagnosis, and management according to the latest advancements in the guidelines and clinical trials. Collectively, it is hoped that the information provided furthers the understanding of the current state of SLD with direct clinical implications and stimulates research initiatives.


Assuntos
Fígado Gorduroso , Humanos , Fígado Gorduroso/tratamento farmacológico , Fígado Gorduroso/fisiopatologia , Animais
9.
World J Surg Oncol ; 22(1): 117, 2024 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-38698475

RESUMO

BACKGROUND AND AIMS: The prevalence of metabolic dysfunction-associated fatty liver disease (MAFLD) in hepatocellular carcinoma (HCC) patients is increasing, yet its association with postoperative complications of HCC remains unclear. The aim of this study was to investigate the impact of MAFLD on complications after radical resection in HCC patients. METHODS: Patients with HCC who underwent radical resection were included. Patients were stratified into MAFLD group and non-MAFLD group. Clinical features and post-hepatectomy complications were compared between the two groups, and logistic regression analysis was used to determine independent risk factors associated with post-hepatectomy complications. RESULTS: Among the 936 eligible patients with HCC who underwent radical resection, concurrent MAFLD was diagnosed in 201 (21.5%) patients. Compared to the non-MAFLD group, the MAFLD group exhibited a higher incidence of complications, including infectious and major complications after radical resection in HCC patients. The logistic regression analysis found that MAFLD was an independent risk factor for complications, including infectious and major complications in HCC patients following radical resection (OR 1.565, 95%CI 1.109-2.343, P = 0.012; OR 2.092, 95%CI 1.386-3.156, P < 0.001; OR 1.859, 95% CI 1.106-3.124, P = 0.019; respectively). Subgroup analysis of HBV-related HCC patients yielded similar findings, and MAFLD patients with type 2 diabetes mellitus (T2DM) exhibited a higher incidence of postoperative complications compared to those without T2DM (all P < 0.05). CONCLUSIONS: Concurrent MAFLD was associated with an increased incidence of complications after radical resection in patients with HCC, especially MAFLD with T2DM.


Assuntos
Carcinoma Hepatocelular , Hepatectomia , Neoplasias Hepáticas , Complicações Pós-Operatórias , Humanos , Carcinoma Hepatocelular/cirurgia , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/virologia , Masculino , Neoplasias Hepáticas/cirurgia , Neoplasias Hepáticas/patologia , Feminino , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/epidemiologia , Pessoa de Meia-Idade , Hepatectomia/efeitos adversos , Fatores de Risco , Seguimentos , Prognóstico , Estudos Retrospectivos , Fígado Gorduroso/etiologia , Fígado Gorduroso/epidemiologia , Fígado Gorduroso/complicações , Fígado Gorduroso/metabolismo , Fígado Gorduroso/patologia , Idoso , Incidência
10.
Hepatol Commun ; 8(6)2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38727678

RESUMO

BACKGROUND: Few studies have examined the risk of long-term clinical outcomes in patients with metabolic dysfunction-associated steatohepatitis in relation to liver histology. We aimed to study this using a real-world cohort. METHODS: Adults (N = 702) recorded on Vanderbilt University Medical Center's Synthetic Derivative database (1984-2021) with evidence of metabolic dysfunction-associated steatohepatitis on liver biopsy were followed from the first biopsy until the first clinical event or last database entry (median: 4.7 y). Risks of cirrhosis (N = 650), other noncirrhotic liver-related (N = 702) and cardiovascular-related outcomes (N = 660), and mortality due to liver, cardiovascular, or cancer events (N = 660) were determined as a function of baseline histology (fibrosis stage [F], lobular inflammation grade [LI], hepatocyte ballooning grade [HB], and steatosis score) adjusting for sex, age, diabetes, and weight-loss surgery. RESULTS: Cirrhosis risk was reduced for lower versus higher fibrosis stage (HR: F0-1 vs. F3: 0.22 [95% CI: 0.12-0.42]), LI1 versus LI2-3 (0.42 [0.19-0.97]), and HB1 versus HB2 (0.20 [0.08-0.50]). Lower fibrosis stage was associated with significantly lower risks of liver-related outcomes versus F4 cirrhosis (eg, F0-1: 0.12 [0.05-0.25]), whereas no differences were seen across baseline lobular inflammation, hepatocyte ballooning, and steatosis grades/scores. Lower versus higher lobular inflammation grade was associated with lower risks for liver-related outcomes in patients with weight-loss surgery. There was a trend for lower risks for cardiovascular-related and any long-term outcomes with lower versus higher fibrosis stage. CONCLUSIONS: Fibrosis stage and lobular inflammation and hepatocyte ballooning grades predict the risk of long-term outcomes, supporting the use of these histological features as potential surrogate markers of disease progression or clinical outcomes.


Assuntos
Cirrose Hepática , Fígado , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Cirrose Hepática/patologia , Fígado/patologia , Adulto , Biópsia , Hepatopatia Gordurosa não Alcoólica/patologia , Hepatopatia Gordurosa não Alcoólica/complicações , Idoso , Doenças Metabólicas/patologia , Doenças Metabólicas/complicações , Fígado Gorduroso/patologia , Doenças Cardiovasculares/etiologia
11.
Nat Commun ; 15(1): 3962, 2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38730247

RESUMO

Lanifibranor, a pan-PPAR agonist, improves liver histology in patients with metabolic dysfunction-associated steatohepatitis (MASH), who have poor cardiometabolic health (CMH) and cardiovascular events as major mortality cause. NATIVE trial secondary and exploratory outcomes (ClinicalTrials.gov NCT03008070) were analyzed for the effect of lanifibranor on IR, lipid and glucose metabolism, systemic inflammation, blood pressure (BP), hepatic steatosis (imaging and histological grading) for all patients of the original analysis. With lanifibranor, triglycerides, HDL-C, apolipoproteins, insulin, HOMA-IR, HbA1c, fasting glucose (FG), hs-CRP, ferritin, diastolic BP and steatosis improved significantly, independent of diabetes status: most patients with prediabetes returned to normal FG levels. Significant adiponectin increases correlated with hepatic and CMH marker improvement; patients had an average weight gain of 2.5 kg, with 49% gaining ≥2.5% weight. Therapeutic benefits were similar regardless of weight change. Here, we show that effects of lanifibranor on liver histology in MASH are accompanied with CMH improvement, indicative of potential cardiovascular clinical benefits.


Assuntos
Chalconas , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adiponectina/metabolismo , Adiponectina/sangue , Glicemia/metabolismo , Glicemia/efeitos dos fármacos , Pressão Sanguínea/efeitos dos fármacos , Doenças Cardiovasculares/tratamento farmacológico , Chalconas/uso terapêutico , Chalconas/farmacologia , Fígado Gorduroso/tratamento farmacológico , Fígado Gorduroso/metabolismo , Resistência à Insulina , Metabolismo dos Lipídeos/efeitos dos fármacos , Fígado/efeitos dos fármacos , Fígado/patologia , Fígado/metabolismo , Receptores Ativados por Proliferador de Peroxissomo/agonistas , Receptores Ativados por Proliferador de Peroxissomo/metabolismo , Propionatos , Triglicerídeos/sangue , Triglicerídeos/metabolismo
12.
Cell Metab ; 36(5): 947-968, 2024 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-38718757

RESUMO

Insulin resistance (IR) is a major pathogenic factor in the progression of MASLD. In the liver, insulin suppresses gluconeogenesis and enhances de novo lipogenesis (DNL). During IR, there is a defect in insulin-mediated suppression of gluconeogenesis, but an unrestrained increase in hepatic lipogenesis persists. The mechanism of increased hepatic steatosis in IR is unclear and remains controversial. The key discrepancy is whether insulin retains its ability to directly regulate hepatic lipogenesis. Blocking insulin/IRS/AKT signaling reduces liver lipid deposition in IR, suggesting insulin can still regulate lipid metabolism; hepatic glucose metabolism that bypasses insulin's action may contribute to lipogenesis; and due to peripheral IR, other tissues are likely to impact liver lipid deposition. We here review the current understanding of insulin's action in governing different aspects of hepatic lipid metabolism under normal and IR states, with the purpose of highlighting the essential issues that remain unsettled.


Assuntos
Fígado Gorduroso , Resistência à Insulina , Insulina , Fígado , Transdução de Sinais , Humanos , Insulina/metabolismo , Fígado/metabolismo , Fígado Gorduroso/metabolismo , Animais , Metabolismo dos Lipídeos , Lipogênese
13.
Eur Rev Med Pharmacol Sci ; 28(8): 3251-3262, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38708483

RESUMO

BACKGROUND: Acute fatty liver disease in pregnancy (AFLP) is a low-incidence condition that usually affects women in the third trimester of pregnancy or the early postpartum period. This article reviews recent advances in the diagnosis and treatment of AFLP with pancreatitis in pregnancy induced by in vitro fertilization (IVF). CASE REPORT: A rare case of AFLP and pancreatitis occurred in a pregnant woman with an IVF-induced twin pregnancy delivered by cesarean section. Diagnosis of this condition is difficult, and delay in accurate diagnosis and timely and appropriate treatment can lead to serious complications such as acute pancreatitis or extensive damage to multiple organs and systems, which can have significant consequences. The main therapeutic approach was the rapid administration of drugs accompanied by therapeutic measures to support liver function and pancreatic complications. CONCLUSIONS: We would like to reemphasize the importance of multidisciplinary management and rapid intervention in AFLP with acute pancreatitis after IVF.


Assuntos
Fígado Gorduroso , Fertilização in vitro , Pancreatite , Complicações na Gravidez , Humanos , Feminino , Gravidez , Pancreatite/diagnóstico , Pancreatite/terapia , Complicações na Gravidez/terapia , Complicações na Gravidez/diagnóstico , Adulto , Fígado Gorduroso/diagnóstico
15.
Hepatol Commun ; 8(5)2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38696365

RESUMO

Cholesterol is an essential lipid molecule in mammalian cells. It is not only involved in the formation of cell membranes but also serves as a raw material for the synthesis of bile acids, vitamin D, and steroid hormones. Additionally, it acts as a covalent modifier of proteins and plays a crucial role in numerous life processes. Generally, the metabolic processes of cholesterol absorption, synthesis, conversion, and efflux are strictly regulated. Excessive accumulation of cholesterol in the body is a risk factor for metabolic diseases such as cardiovascular disease, type 2 diabetes, and metabolic dysfunction-associated steatotic liver disease (MASLD). In this review, we first provide an overview of the discovery of cholesterol and the fundamental process of cholesterol metabolism. We then summarize the relationship between dietary cholesterol intake and the risk of developing MASLD, and also the animal models of MASLD specifically established with a cholesterol-containing diet. In the end, the role of cholesterol-induced inflammation in the initiation and development of MASLD is discussed.


Assuntos
Colesterol na Dieta , Colesterol , Humanos , Colesterol/metabolismo , Animais , Colesterol na Dieta/efeitos adversos , Fígado Gorduroso/metabolismo , Inflamação/metabolismo , Modelos Animais de Doenças , Metabolismo dos Lipídeos
17.
Sci Rep ; 14(1): 10822, 2024 05 11.
Artigo em Inglês | MEDLINE | ID: mdl-38734742

RESUMO

With high prevalence and substantial mortality, metabolic dysfunction-associated steatotic liver disease and chronic obstructive pulmonary disease (COPD) are significant public health concerns. Utilizing a large, population-based dataset from the National Health and Nutrition Examination Survey, our study probes the relationship between COPD prevalence and hepatic steatosis and fibrosis, as measured by Vibration-Controlled Transient Elastography. We analyzed data from 693 individuals with COPD and 7229 without. Through weighted multivariate logistic regression analysis, a restricted cubic spline curve, and threshold effect analysis, we investigated the correlation between the severity of hepatic steatosis and fibrosis and the presence of COPD. Our findings revealed a positive correlation between the controlled attenuation parameter (CAP) and COPD prevalence [OR = 1.03 (95% CI 1.01, 1.05)], even after multivariate adjustment. Furthermore, we observed a U-shaped association between CAP and COPD, where the inflection point, CAP value of 264.85 dB/m, corresponded to the lowest COPD prevalence. Our study emphasizes a substantial and complex link between hepatic steatosis and COPD. These findings urge healthcare professionals to factor liver health into COPD management and prompt further exploration into the underlying mechanisms. This could pave the way for the development of improved prevention and treatment strategies.


Assuntos
Fígado Gorduroso , Cirrose Hepática , Doença Pulmonar Obstrutiva Crônica , Humanos , Doença Pulmonar Obstrutiva Crônica/complicações , Doença Pulmonar Obstrutiva Crônica/epidemiologia , Doença Pulmonar Obstrutiva Crônica/patologia , Masculino , Feminino , Cirrose Hepática/complicações , Cirrose Hepática/epidemiologia , Cirrose Hepática/patologia , Pessoa de Meia-Idade , Fígado Gorduroso/complicações , Fígado Gorduroso/epidemiologia , Fígado Gorduroso/patologia , Prevalência , Idoso , Inquéritos Nutricionais , Técnicas de Imagem por Elasticidade , Adulto
18.
Nutrients ; 16(9)2024 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-38732511

RESUMO

Prenatal alcohol exposure (AE) affects cognitive development. However, it is unclear whether prenatal AE influences the metabolic health of offspring and whether postnatal AE exacerbates metabolic deterioration resulting from prenatal AE. Choline is a semi-essential nutrient that has been demonstrated to mitigate the cognitive impairment of prenatal AE. This study investigated how maternal choline supplementation (CS) may modify the metabolic health of offspring with prenatal and postnatal AE (AE/AE). C57BL/6J female mice were fed either a Lieber-DeCarli diet with 1.4% ethanol between embryonic day (E) 9.5 and E17.5 or a control diet. Choline was supplemented with 4 × concentrations versus the control throughout pregnancy. At postnatal week 7, offspring mice were exposed to 1.4% ethanol for females and 3.9% ethanol for males for 4 weeks. AE/AE increased hepatic triglyceride accumulation in male offspring only, which was normalized by prenatal CS. Prenatal CS also improved glucose tolerance compared to AE/AE animals. AE/AE suppressed hepatic gene expression of peroxisome proliferator activated receptor alpha (Ppara) and low-density lipoprotein receptor (Ldlr), which regulate fatty acid catabolism and cholesterol reuptake, respectively, in male offspring. However, these changes were not rectified by prenatal CS. In conclusion, AE/AE led to an increased risk of steatosis and was partially prevented by prenatal CS in male mice.


Assuntos
Colina , Suplementos Nutricionais , Etanol , Fígado , Camundongos Endogâmicos C57BL , Efeitos Tardios da Exposição Pré-Natal , Animais , Feminino , Gravidez , Colina/administração & dosagem , Masculino , Fígado/metabolismo , Fígado/efeitos dos fármacos , Camundongos , Fígado Gorduroso/prevenção & controle , Fígado Gorduroso/etiologia , Triglicerídeos/metabolismo , PPAR alfa/metabolismo , Receptores de LDL/genética , Receptores de LDL/metabolismo , Intolerância à Glucose/prevenção & controle , Metabolismo dos Lipídeos/efeitos dos fármacos
19.
Nutrients ; 16(9)2024 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-38732557

RESUMO

Associations between dyslipidemia and metabolic dysfunction-associated steatotic liver disease (MASLD) have been reported. Previous studies have shown that the triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio may be a surrogate marker of MASLD, assessed by liver ultrasound. However, no studies have evaluated the utility of this ratio according to biopsy-proven MASLD and its stages. Therefore, our aim was to evaluate if the TG/HDL-C ratio allows for the identification of biopsy-proven MASLD in patients with obesity. We conducted a case-control study in 153 patients with obesity who underwent metabolic surgery and had a concomitant liver biopsy. Fifty-three patients were classified as no MASLD, 45 patients as metabolic dysfunction-associated steatotic liver-MASL, and 55 patients as metabolic dysfunction-associated steatohepatitis-MASH. A receiver operating characteristic (ROC) analysis was performed to assess the accuracy of the TG/HDL-C ratio to detect MASLD. We also compared the area under the curve (AUC) of the TG/HDL-C ratio, serum TG, and HDL-C. A higher TG/HDL-C ratio was observed among patients with MASLD, compared with patients without MASLD. No differences in the TG/HDL-C ratio were found between participants with MASL and MASH. The greatest AUC was observed for the TG/HDL-C ratio (AUC 0.747, p < 0.001) with a cut-off point of 3.7 for detecting MASLD (sensitivity = 70%; specificity = 74.5%). However, no statistically significant differences between the AUC of the TG/HDL-C ratio and TG or HDL-C were observed to detect MASLD. In conclusion, although an elevated TG/HDL-C ratio can be found in patients with MASLD, this marker did not improve the detection of MASLD in our study population, compared with either serum TG or HDL-C.


Assuntos
HDL-Colesterol , Fígado Gorduroso , Fígado , Obesidade , Triglicerídeos , Humanos , HDL-Colesterol/sangue , Triglicerídeos/sangue , Feminino , Masculino , Estudos de Casos e Controles , Pessoa de Meia-Idade , Fígado/patologia , Obesidade/sangue , Obesidade/complicações , Biópsia , Fígado Gorduroso/sangue , Fígado Gorduroso/diagnóstico , Adulto , Biomarcadores/sangue , Curva ROC , Dislipidemias/sangue
20.
Nutrients ; 16(9)2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38732626

RESUMO

Excess adipose tissue, particularly of the visceral type, triggering chronic low-grade inflammation and altering its secretory profile, is a contributing factor to the initiation and progression of metabolic dysfunction-associated steatotic liver disease (MASLD). This study aimed to compare the levels of selected adipokines and cytokines in individuals with normal weight and obesity, assessing their potential for diagnosing MASLD and establishing a cutoff point for body fat content associated with hepatic steatosis development. The research involved 99 participants categorized by body mass index and MASLD presence, undergoing body composition analysis, liver elastography, biochemical tests, and evaluation of adipokines and cytokines in serum. The results indicated elevated IL-6 (interleukin 6) serum levels in individuals with obesity with MASLD compared to the normal-weight group without MASLD. The multivariate regression analysis demonstrated a connection between hepatic steatosis and total adipose tissue content, VAT (visceral adipose tissue), VAT/SAT (subcutaneous adipose tissue) ratio, HOMA-IR (homeostasis model assessment of insulin resistance), IL-6, Il-1ß (interleukin 1ß), and MMP-2 (matrix metalloproteinase 2). Among the adipokines and cytokines examined in this study, interleukin 6 was the strongest predictor of MASLD regardless of gender. In addition, an association between the development of hepatic steatosis and higher serum IL-1ß levels and higher adipose tissue was observed in women. However, further studies on a larger group of patients are needed to consider the use of these cytokines as markers of MASLD. The HOMA-IR index demonstrated potential diagnostic utility in identifying hepatic steatosis.


Assuntos
Adipocinas , Citocinas , Obesidade , Humanos , Feminino , Masculino , Projetos Piloto , Adipocinas/sangue , Pessoa de Meia-Idade , Citocinas/sangue , Adulto , Obesidade/sangue , Índice de Massa Corporal , Biomarcadores/sangue , Fígado Gorduroso/sangue , Fígado Gorduroso/diagnóstico , Interleucina-6/sangue , Gordura Intra-Abdominal/metabolismo , Interleucina-1beta/sangue , Composição Corporal , Resistência à Insulina , Hepatopatia Gordurosa não Alcoólica/sangue , Hepatopatia Gordurosa não Alcoólica/diagnóstico
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