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1.
World J Gastroenterol ; 30(13): 1887-1898, 2024 Apr 07.
Article in English | MEDLINE | ID: mdl-38659480

ABSTRACT

BACKGROUND: Differences in the preoperative characteristics and weight loss outcomes after sleeve gastrectomy (SG) between patients with familial aggregation of obesity (FAO) and patients with sporadic obesity (SO) have not been elucidated. AIM: To explore the impact of SG on weight loss and the alleviation of obesity-related comorbidities in individuals with FAO. METHODS: A total of 193 patients with obesity who underwent SG were selected. Patients with FAO/SO were matched 1:1 by propensity score matching and were categorized into 4 groups based on the number of first-degree relatives with obesity (1SO vs 1FAO, 2SO vs 2FAO). The baseline characteristics, weight loss outcomes, prevalence of obesity-related comorbidities and incidence of major surgery-related complications were compared between groups. RESULTS: We defined FAO as the presence of two or more first-degree relatives with obesity. Patients with FAO did not initially show significant differences in baseline data, short-term postoperative weight loss, or obesity-related comorbidities when compared to patients with SO preoperatively. However, distinctions between the two groups became evident at the two-year mark, with statistically significant differences in both percentage of total weight loss (P = 0.006) and percentage of excess weight loss (P < 0.001). The FAO group exhibited weaker remission of type 2 diabetes mellitus (T2DM) (P = 0.031), hyperlipidemia (P = 0.012), and non-alcoholic fatty liver disease (NAFLD) (P = 0.003) as well as a lower incidence of acid reflux (P = 0.038). CONCLUSION: FAO patients is associated with decreased mid-to-long-term weight loss outcomes; the alleviation of T2DM, hyperlipidemia and NAFLD; and decreased incidence of acid reflux postoperatively.


Subject(s)
Gastrectomy , Weight Loss , Humans , Male , Female , Gastrectomy/adverse effects , Gastrectomy/methods , Adult , Treatment Outcome , Middle Aged , Retrospective Studies , Diabetes Mellitus, Type 2/surgery , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/diagnosis , Postoperative Complications/etiology , Postoperative Complications/epidemiology , Comorbidity , Obesity/surgery , Obesity/diagnosis , Obesity/complications , Obesity/epidemiology , Obesity, Morbid/surgery , Obesity, Morbid/complications , Bariatric Surgery/methods , Propensity Score , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/diagnosis , Incidence
2.
Front Endocrinol (Lausanne) ; 15: 1306091, 2024.
Article in English | MEDLINE | ID: mdl-38686208

ABSTRACT

Purpose: Whether the diagnosis of non-alcoholic fatty liver disease or metabolic dysfunction-associated fatty disease has a different impact on liver transplant recipients with hepatocellular carcinoma is not yet clear. Methods: Data from a two-center retrospective cohort study were collected to compare and investigate the differences between non-alcoholic fatty liver disease and metabolic dysfunction-associated fatty liver disease in clinicopathologic parameters and prognosis among liver transplant recipients with hepatocellular carcinoma. Results: A total of 268 liver transplant recipients with hepatocellular carcinoma were included. The prevalence among pre- and post-transplant metabolic dysfunction-associated fatty liver disease was 10.82% and 30.22%, while for non-alcoholic fatty liver disease, it was 7.09% and 26.87%, respectively. The clinicopathological parameters were similar between the two pre-transplant groups. In contrast, the post-transplant group with metabolic dysfunction-associated fatty liver disease exhibited a higher prevalence of diabetes mellitus and a greater body mass index. However, the other parameters were similar between the two post-transplant groups (p > 0.05). Factors such as the largest tumor size > 4 cm, microvascular invasion, lack of tumor capsule, post-transplant metabolic dysfunction-associated fatty liver disease, and decreased post-transplant lymphocyte percentage were related to an increased risk of recurrence. Conclusion: In patients undergone liver transplantation for hepatocellular carcinoma, the diagnosis of metabolic dysfunction-associated fatty disease is more strongly associated with metabolic abnormalities than the diagnosis of non-alcoholic fatty liver disease and is an independent predictor of hepatocellular carcinoma recurrence.


Subject(s)
Carcinoma, Hepatocellular , Liver Neoplasms , Liver Transplantation , Non-alcoholic Fatty Liver Disease , Humans , Carcinoma, Hepatocellular/surgery , Carcinoma, Hepatocellular/metabolism , Carcinoma, Hepatocellular/diagnosis , Carcinoma, Hepatocellular/pathology , Liver Transplantation/adverse effects , Non-alcoholic Fatty Liver Disease/metabolism , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/pathology , Non-alcoholic Fatty Liver Disease/diagnosis , Male , Female , Liver Neoplasms/surgery , Liver Neoplasms/metabolism , Liver Neoplasms/diagnosis , Middle Aged , Retrospective Studies , Prognosis , Adult , Aged
3.
World J Surg ; 48(5): 1219-1230, 2024 May.
Article in English | MEDLINE | ID: mdl-38468392

ABSTRACT

BACKGROUND: Despite the accumulating evidence regarding the oncological differences between nonalcoholic fatty liver disease (NAFLD)-related hepatocellular carcinoma (HCC) and viral infection-related HCC, the short- and long-term outcomes of surgical resection of NAFLD-related HCC remain unclear. While some reports indicate improved postoperative survival in NAFLD-related HCC, other studies suggest higher postoperative complications in these patients. METHODS: Patients with NAFLD and those with hepatitis viral infection who underwent hepatectomy for HCC at our department were retrospectively analyzed. The clinical, surgical, pathological, and survival outcomes were compared between the two groups. RESULTS: Among the 1047 consecutive patients who underwent hepatectomy for HCC, 57 had NAFLD-related HCC (NAFLD group), and 727 had virus-related HCC (VH group). The body mass index and serum glycated hemoglobin levels were significantly higher in the NAFLD group than in the VH group. There were no significant differences in operative time and bleeding amount. Moreover, the morbidity and the length of postoperative hospital stays were similar across both groups. The pathological results showed that the tumor size was significantly larger in the NAFLD group than in the VH group. No significant differences between the groups in overall or recurrence-free survival were found. In a subgroup analysis with matched tumor diameters, patients in the NAFLD group had a better prognosis after hepatectomy than those in the VH group. CONCLUSION: Surgical outcomes after hepatectomy were comparable between the groups. Subgroup analysis reveals early detection and surgical intervention in NAFLD-HCC may improve prognosis.


Subject(s)
Carcinoma, Hepatocellular , Hepatectomy , Liver Neoplasms , Non-alcoholic Fatty Liver Disease , Humans , Carcinoma, Hepatocellular/surgery , Carcinoma, Hepatocellular/mortality , Carcinoma, Hepatocellular/pathology , Carcinoma, Hepatocellular/virology , Liver Neoplasms/surgery , Liver Neoplasms/mortality , Liver Neoplasms/pathology , Liver Neoplasms/virology , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/mortality , Male , Female , Retrospective Studies , Middle Aged , Aged , Treatment Outcome , Hepatitis, Viral, Human/complications , Hepatitis, Viral, Human/surgery , Postoperative Complications/epidemiology , Adult
5.
Front Endocrinol (Lausanne) ; 15: 1338889, 2024.
Article in English | MEDLINE | ID: mdl-38469144

ABSTRACT

Background: Nonalcoholic steatohepatitis (NASH) is the advanced stage of nonalcoholic fatty liver disease (NAFLD), one of the most prevalent chronic liver diseases. The effectiveness of bariatric surgery in treating NASH and preventing or even reversing liver fibrosis has been demonstrated in numerous clinical studies, but the underlying mechanisms and crucial variables remain unknown. Methods: Using the GSE135251 dataset, we examined the gene expression levels of NASH and healthy livers. Then, the differentially expressed genes (DEGs) of patients with NASH, at baseline and one year after bariatric surgery, were identified in GSE83452. We overlapped the hub genes performed by protein-protein interaction (PPI) networks and DEGs with different expression trends in both datasets to obtain key genes. Genomic enrichment analysis (GSEA) and genomic variation analysis (GSVA) were performed to search for signaling pathways of key genes. Meanwhile, key molecules that regulate the key genes are found through the construction of the ceRNA network. NASH mice were induced by a high-fat diet (HFD) and underwent sleeve gastrectomy (SG). We then cross-linked the DEGs in clinical and animal samples using quantitative polymerase chain reaction (qPCR) and validated the key genes. Results: Seven key genes (FASN, SCD, CD68, HMGCS1, SQLE, CXCL10, IGF1) with different expression trends in GSE135251 and GSE83452 were obtained with the top 30 hub genes selected by PPI. The expression of seven key genes in mice after SG was validated by qPCR. Combined with the qPCR results from NASH mice, the four genes FASN, SCD, HMGCS1, and CXCL10 are consistent with the biological analysis. The GSEA results showed that the 'cholesterol homeostasis' pathway was enriched in the FASN, SCD, HMGCS1, and SQLE high-expression groups. The high-expression groups of CD68 and CXCL10 were extremely enriched in inflammation-related pathways. The construction of the ceRNA network obtained microRNAs and ceRNAs that can regulate seven key genes expression. Conclusion: In summary, this study contributes to our understanding of the mechanisms by which bariatric surgery improves NASH, and to the development of potential biomarkers for the treatment of NASH.


Subject(s)
Bariatric Surgery , MicroRNAs , Non-alcoholic Fatty Liver Disease , Humans , Animals , Mice , Non-alcoholic Fatty Liver Disease/genetics , Non-alcoholic Fatty Liver Disease/surgery , MicroRNAs/genetics , Protein Interaction Maps
6.
Eur J Gastroenterol Hepatol ; 36(4): 430-437, 2024 Apr 01.
Article in English | MEDLINE | ID: mdl-38407856

ABSTRACT

BACKGROUND: This study aimed to clarify the population in whom the presence of metabolic dysfunction-associated fatty liver disease (MAFLD) especially contributes to recurrence after liver resection for non-B, non-C hepatocellular carcinoma (NBNC-HCC). METHODS: Of the 199 patients who underwent liver resection for NBNC-HCC, those who exceeded Milan criteria and with pathologically proven vascular invasion, intrahepatic metastasis, and positive resection margins were excluded, and the remaining 94 were eligible for this study. We explored factors contributing to postoperative recurrence in populations with and without advanced liver fibrosis. RESULTS: Independent factors contributing to postoperative recurrence in the study population were male sex ( P  = 0.023) and presence of type 2 diabetes (DM) ( P  = 0.006) and advanced liver fibrosis ( P  < 0.001). Factors in cases with advanced liver fibrosis (n = 43) were non-overweight ( P  = 0.02), type 2 DM ( P  = 0.006), and preoperative alpha-fetoprotein level of 8.2 ng/ml or higher ( P  = 0.021). In cases without advanced liver fibrosis (n = 51), only presence of all three MAFLD criteria was related to recurrence. CONCLUSION: Liver fibrosis is a strong factor contributing to postoperative recurrence of NBNC-HCC, as previously reported. In patients with advanced liver fibrosis, presence of type 2 DM was the only factor associated with recurrence among MAFLD criteria. On the other hand, in patients without advanced liver fibrosis, the combination of all MAFLD criteria, rather than a specific criterion alone, contributed to recurrence. MAFLD criteria were found to have utility as predictors of postoperative recurrence in NBNC-HCC.


Subject(s)
Carcinoma, Hepatocellular , Diabetes Mellitus, Type 2 , Liver Neoplasms , Non-alcoholic Fatty Liver Disease , Humans , Male , Female , Carcinoma, Hepatocellular/pathology , Liver Neoplasms/pathology , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/diagnosis , Prognosis , Liver Cirrhosis/complications , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/diagnosis , Non-alcoholic Fatty Liver Disease/surgery
7.
Metab Syndr Relat Disord ; 22(3): 207-213, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38232369

ABSTRACT

Purpose: The purpose of this study was to investigate the relationship between remission of nonalcoholic fatty liver disease (NAFLD) and radical surgery for colorectal cancer (CRC) patients. Methods: From January 2014 to December 2021, data of patients with concurrent CRC and NAFLD who underwent radical surgery in a single-center hospital were retrospectively collected. NAFLD was defined as a mean computed tomography (CT) liver attenuation value of <40 Hounsfield units (HUs). Comparison of preoperative and 1-year postoperative CT images was performed to evaluate the change of NAFLD. Multivariate logistic regression analysis was performed to identify independent predictive factors for NAFLD remission. The Kaplan-Meier method was used to estimate overall survival (OS) and disease-free survival (DFS) between the remission group and no remission group. Results: In this study, a total of 55 eligible patients were included. The remission group had 33 (60.0%) patients and the no remission group had 22 (40.0%) patients. The mean preoperative weight was 66.1 ± 9.9 kg. The mean preoperative body mass index (BMI) was 25.4 ± 2.5 kg/m2. We found that the average weight was significantly decreased (P < 0.01), average BMI was significantly decreased (P < 0.01), and HU score was significantly increased (P < 0.01). By comparing baseline characteristics between the remission group and no remission group, we found that the remission group exhibited larger tumor sizes (P = 0.036) than the no remission group. In the multivariate logistic regression analysis, we found that weight change was a predictor for NAFLD (odds ratio = 0.764, 95% confidence interval = 0.618-0.944, P = 0.013). We did not find any statistically significant differences in OS (P = 0.182) or DFS (P = 0.248) between the remission group and no remission group. Conclusions: The NAFLD remission rate reached 60.0% for CRC patients 1 year after radical surgery. In addition, we found that weight change was a predictor of NAFLD remission.


Subject(s)
Colorectal Neoplasms , Non-alcoholic Fatty Liver Disease , Humans , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/pathology , Retrospective Studies , Tomography, X-Ray Computed , Colorectal Neoplasms/complications , Colorectal Neoplasms/surgery
8.
Obes Surg ; 34(3): 769-777, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38280161

ABSTRACT

INTRODUCTION: Identification of liver disease during bariatric operations is an important task given the patients risk for occult fatty liver disease. Surgeon's accuracy of assessing for liver disease during an operation is poorly understood. The objective was to measure surgeons' performance on intra-operative visual assessment of the liver in a simulated environment. METHODS: Liver images from 100 patients who underwent laparoscopic bariatric surgery and pre-operative ultrasound elastography between July 2020 and July 2021 were retrospectively evaluated. The perception of 15 surgeons regarding the degree of hepatic steatosis and fibrosis was collected in a simulated clinical environment by survey and compared to results determined by ultrasonographic exam. RESULTS: The surgeons' ability to correctly identify the class of steatosis and fibrosis was poor (accuracy 61% and 59%, respectively) with a very weak correlation between the surgeon's predicted class and its true class (r = 0.17 and r = 0.12, respectively). When liver disease was present, surgeons completely missed its presence in 26% and 51% of steatosis and fibrosis, respectively. Digital image processing demonstrated that surgeons subjectively classified steatosis based on the "yellowness" of the liver and fibrosis based on texture of the liver, despite neither correlating with the true degree of liver disease. CONCLUSION: Laparoscopic visual assessment of the liver surface for identification of non-cirrhotic liver disease was found to be an inaccurate method during laparoscopic bariatric surgery. While validation studies are needed, the results suggest the clinical need for alternative approaches.


Subject(s)
Bariatric Surgery , Laparoscopy , Non-alcoholic Fatty Liver Disease , Obesity, Morbid , Surgeons , Humans , Retrospective Studies , Obesity, Morbid/surgery , Liver/diagnostic imaging , Liver/pathology , Non-alcoholic Fatty Liver Disease/surgery , Liver Cirrhosis/diagnostic imaging , Liver Cirrhosis/surgery , Liver Cirrhosis/pathology
9.
Obes Surg ; 34(3): 841-849, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38285299

ABSTRACT

PURPOSE: Non-alcoholic fatty liver disease (NAFLD), now termed metabolic dysfunction-associated fatty liver disease (MAFLD), is a growing health concern associated with obesity and type 2 diabetes. Bariatric surgery offers potential benefits, but its impact on MAFLD remains incompletely understood, with scarce long-term follow-up prospective studies. Moreover, being liver biopsy the gold standard for liver condition measurement, the need for non-invasive techniques that allow the assessment of MAFLD development after bariatric surgery is imperative. OWLiver® Care and OWLiver® represent two serum lipidomic tests, featuring panels comprising 11 and 20 triglycerides, respectively. MATERIALS AND METHODS: We conducted a prospective study involving 80 Caucasians to assess the effects of bariatric surgery on MAFLD using non-invasive diagnostics and to identify baseline predictors of MAFLD remission. Serum samples were collected before surgery and at a 3-year follow-up. RESULTS: After 3 years, the proportion of patients exhibiting a healthy liver escalated from 5.0% at baseline to 26.3%. Conversely, the percentage of steatohepatitis declined from 35.1% to a mere 7.6%. Younger age, female gender, and the absence of type 2 diabetes were associated with MAFLD remission. However, age stood as the only independent variable associated with this favorable liver evolution (R2 = 0.112). CONCLUSION: Bariatric surgery demonstrates mid-term benefits in improving MAFLD, with younger age as a baseline predictor of remission. Non-invasive diagnostic methods, like OWLiver®, are valuable tools for monitoring MAFLD evolution. Further research with larger populations and longer follow-up periods is warranted to refine personalized treatment approaches.


Subject(s)
Bariatric Surgery , Diabetes Mellitus, Type 2 , Non-alcoholic Fatty Liver Disease , Obesity, Morbid , Humans , Female , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/surgery , Prospective Studies , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/surgery , Obesity, Morbid/surgery
10.
Surg Obes Relat Dis ; 20(5): 482-489, 2024 May.
Article in English | MEDLINE | ID: mdl-38195314

ABSTRACT

BACKGROUND: Obesity is associated with nonalcoholic steatohepatitis (NASH), which leads to an increased rate of primary liver cancers, cirrhosis, and decreased life expectancy. Metabolic/bariatric surgery (MBS) determines long-term weight loss and the resolution of obesity-related medical problems. OBJECTIVE: The aim of this study was to evaluate the impact of MBS on liver histologic features in individuals with obesity. SETTING: Tertiary referral university hospital. METHODS: We retrospectively analyzed data on 37 patients undergoing MBS from a prospectively held database. All patients had a liver biopsy at the time of MBS and a second liver biopsy in case of further surgery or for NASH follow-up. Eighteen patients had NASH on the first liver biopsy. The primary endpoint was the resolution of steatohepatitis without worsening of fibrosis on the second liver biopsy. Secondary endpoints were the evolution of liver steatosis, hepatocyte ballooning, nonalcoholic fatty liver disease activity score, and biochemical parameters from the time of the first to the second liver biopsy. RESULTS: Fifteen (83.3%) patients had significant resolution of steatohepatitis (P < .001) without fibrosis worsening. There was a statistically significant improvement of all blood tests except for low-density lipoprotein, alkaline phosphatases, and bilirubinemia. The Homeostatic Model Assessment (HOMA) index was significantly improved after MBS (P < .001), and circulating insulin and leptin concentrations were significantly reduced. Mean weight loss was 47 kg, with a 16.6 kg/m2 body mass index reduction and a % of total weight loss (%TWL) of 40.3 ±14% from the moment of MBS to the last follow-up. CONCLUSION: MBS is effective in determining NASH regression without fibrosis worsening and in reducing HOMA index and leptin and insulin concentrations.


Subject(s)
Bariatric Surgery , Non-alcoholic Fatty Liver Disease , Obesity, Morbid , Weight Loss , Humans , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/etiology , Female , Male , Retrospective Studies , Middle Aged , Adult , Obesity, Morbid/surgery , Obesity, Morbid/complications , Treatment Outcome , Remission Induction , Biopsy
11.
Clin Res Hepatol Gastroenterol ; 48(1): 102261, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38070828

ABSTRACT

BACKGROUND: Metabolic dysfunction-associated steatotic liver disease (MASLD), previously known as non-alcoholic fatty liver disease (NAFLD), is linked with an increased risk of adverse cardiovascular events. Studies have suggested an association between the reduction of incident cardiovascular events in patients with MASLD after bariatric surgery. This systematic review and meta-analysis were performed to assess the influence of bariatric surgery on cardiovascular outcomes in patients with diagnosed MASLD by identifying all available cohort studies and pooling their data. METHODS: PubMed and Google Scholar databases were searched till July 2023 for published studies that assessed the effect of bariatric surgery on cardiovascular outcomes in MASLD patients. Using a random effects model, hazard ratios (HRs) with 95 % confidence intervals (CIs) were pooled. RESULTS: The systematic review identified three cohort studies. The analysis of 240,516 MASLD patients found a significantly reduced incidence of cardiovascular events. (HR 0.51; 95 % CI 0.48 to 0.54, P value <0.00001). CONCLUSION: Bariatric surgery in MASLD patients significantly reduced the incidence of cardiovascular events, suggesting that bariatric surgery is an effective therapeutic tool among MASLD patients compared to non-surgical interventions.


Subject(s)
Bariatric Surgery , Cardiovascular Diseases , Metabolic Diseases , Non-alcoholic Fatty Liver Disease , Humans , Cardiovascular Diseases/etiology , Databases, Factual , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/surgery
12.
Liver Int ; 44(2): 566-576, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38082500

ABSTRACT

BACKGROUND AND AIMS: Obesity is a growing healthcare challenge worldwide and a significant risk factor for liver failure as seen with non-alcoholic steatohepatitis (NASH). Combining metabolic-bariatric surgery (MBS) with liver transplantation (LT) appears as attractive strategy to treat both, the underlying liver disease and obesity. However, there is an ongoing debate on best timing and patient selection. This survey was designed to explore the current treatment practice for patients with NASH and obesity worldwide. METHODS: A web-based survey was conducted in 2022 among bariatric and LT surgeons, and hepatologists from Europe, North and South America and Asia. RESULTS: The survey completion rate was 74% (145/196). The average respondents were 41-50 years (38%), male (82.1%) and had >20 years of clinical experience (42.1%). Centres with a high LT-caseload for NASH were mainly located in the USA and United Kingdom. Almost 30% have already performed a combination of LT with MBS and 49% plan to do it. A majority of bariatric surgeons prefer MBS before LT (77.2%), whereas most of LT surgeons (52%) would perform MBS during LT. Most respondents (n = 114; 80%) favour sleeve gastrectomy over other bariatric techniques. One third (n = 42; 29.4%) has an established protocol regarding MBS for LT candidates. CONCLUSION: The most experienced centres doing LT for NASH are in the USA and United Kingdom with growing awareness worldwide. Overall, a combination of MBS and LT has already been performed by a third of respondents. Sleeve gastrectomy is the bariatric technique of choice-preferably performed either before or during LT.


Subject(s)
Bariatric Surgery , Gastric Bypass , Liver Transplantation , Non-alcoholic Fatty Liver Disease , Obesity, Morbid , Humans , Male , Non-alcoholic Fatty Liver Disease/epidemiology , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/etiology , Liver Transplantation/adverse effects , Bariatric Surgery/adverse effects , Bariatric Surgery/methods , Obesity/surgery , Internet , Treatment Outcome , Gastric Bypass/adverse effects , Gastric Bypass/methods
13.
Surgeon ; 22(1): e26-e33, 2024 Feb.
Article in English | MEDLINE | ID: mdl-37567846

ABSTRACT

BACKGROUND AND PURPOSE: Non-alcoholic fatty liver disease (NAFLD) has increasing worldwide prevalence, fuelled by rising obesity rates, and weight reduction is the mainstay of its management. We sought to study the effect of bariatric surgery, the most effective long-term treatment for obesity and associated metabolic disorders, on liver function in people with obesity. METHODS: We performed a retrospective longitudinal cohort study of 511 patients who had undergone bariatric surgery (71 sleeve gastrectomy and 440 gastric bypass) over 60 months of follow-up. Patients were stratified into groups based on their baseline alanine aminotransferase (ALT) into Group A (ALT < 40 U/L) and Group B (ALT > 40 U/L). Postoperative follow-up weight loss, liver function tests, HbA1c, blood pressure and lipid profiles were collected. FINDINGS: Bariatric surgery resulted in nadir total weight loss of 33.1% by 24 months (p < 0.001) with no significant difference between groups. In people with raised baseline ALT (Group B), ALT and gamma glutamyl transferase (GGT) levels decreased significantly by 4 months postoperatively (p < 0.001) and sustained over 60 months of follow-up. There was also significant and sustained reduction in HbA1c, blood pressure, total cholesterol, and non-HDL cholesterol overall with no differences between groups. CONCLUSIONS: Bariatric surgery results in significant weight loss, improves liver function tests and metabolic outcomes in people with obesity. Bariatric surgery could be a therapeutic consideration for patients with NAFLD associated with severe obesity who have otherwise been unresponsive to conservative management.


Subject(s)
Bariatric Surgery , Non-alcoholic Fatty Liver Disease , Obesity, Morbid , Humans , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/surgery , Non-alcoholic Fatty Liver Disease/epidemiology , Retrospective Studies , Glycated Hemoglobin , Longitudinal Studies , Bariatric Surgery/methods , Obesity, Morbid/complications , Obesity, Morbid/surgery , Alanine Transaminase , Gastrectomy/methods , Weight Loss/physiology , Cholesterol , Treatment Outcome
14.
Ann Surg ; 279(2): 276-282, 2024 Feb 01.
Article in English | MEDLINE | ID: mdl-37212393

ABSTRACT

OBJECTIVE: To compare histologic outcomes in patients with fibrotic nonalcoholic steatohepatitis (NASH) and obesity after metabolic surgery versus nonsurgical care. BACKGROUND: There are no published data comparing the effects of metabolic surgery versus nonsurgical care on histologic progression of NASH. METHODS: Repeat liver biopsies were performed in patients with body mass index >30 kg/m 2 at a US health system whose baseline liver biopsy between 2004 and 2016 confirmed a histologic diagnosis of NASH including the presence of liver fibrosis, but without cirrhosis. Baseline characteristics of liver histology for patients who underwent simultaneous liver biopsy at the time of metabolic surgery were balanced with a nonsurgical control group using overlap weighting methods. The primary composite endpoint required both resolution of NASH and improvement of at least 1 fibrosis stage in the repeat liver biopsy. RESULTS: A total of 133 patients (42 metabolic surgery and 91 nonsurgical controls) had a repeat liver biopsy with a median interval of 2 years. Overlap weighting provided balance for baseline histologic disease activity, fibrosis stage, and time interval between liver biopsies. In overlap-weighted patients, 50.1% in the surgical and 12.1% in the nonsurgical group met the primary endpoint (odds ratio=7.3; 95% CI, 2.8-19.2, P <0.001). NASH resolution and fibrosis improvement occurred in 68.5% and 64.1% of surgical patients, respectively. Surgical and nonsurgical patients who met the primary endpoint lost more weight than their counterparts who did not meet the primary endpoint [mean weight loss difference in the surgical group: 12.2% (95% CI, 7.3%-17.2%) and in the nonsurgical group: 11.6% (95% CI, 6.2%-16.9%)]. CONCLUSIONS: Among patients with fibrotic noncirrhotic NASH, metabolic surgery resulted in simultaneous NASH resolution and fibrosis improvement in half of patients.


Subject(s)
Bariatric Surgery , Non-alcoholic Fatty Liver Disease , Humans , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/surgery , Liver/surgery , Liver/pathology , Liver Cirrhosis/surgery , Liver Cirrhosis/pathology , Fibrosis , Biopsy
16.
Transplantation ; 108(1): 235-241, 2024 Jan 01.
Article in English | MEDLINE | ID: mdl-37439776

ABSTRACT

BACKGROUND: Loss of skeletal muscle can be accompanied by an increase in adipose tissue leading to sarcopenic obesity. There are limited data on how liver transplantation (LT) might impact adipose tissue compartments, particularly among patients with metabolically active disease, such as nonalcoholic steatohepatitis (NASH) and subsequent metabolic sequela. METHODS: Skeletal muscle, visceral adipose tissue (VAT), and subcutaneous adipose tissue (SAT) were measured using cross-sectional imaging performed in 190 patients pre-LT, 6 mo post-LT and 12 mo post-LT. Changes in adipose tissue and their impact on metabolic diseases were determined in patients transplanted for NASH versus non-NASH. RESULTS: Skeletal muscle, VAT, and SAT were similar in patients with NASH and non-NASH pre-LT despite a higher burden of metabolic diseases in patients with NASH. Following LT, no significant differences between skeletal muscle and SAT were observed in the entire cohort and among patients with NASH (versus non-NASH). LT recipients with the highest muscle mass pre-LT were at the greatest risk for muscle loss post-LT. A time-dependent increase in VAT was noted post-LT, which was more robust among patients with a history of NASH cirrhosis. In adjusted multivariate analysis, NASH versus non-NASH was a strong predictor of post-LT increase in VAT (ß-coefficient 3.00, P = 0.04). Pre-LT VAT was an independent predictor of post-LT serum triglycerides (ß-coefficient 5.49 ± 2.78, P = 0.05) and low-density lipoprotein cholesterol (ß-coefficient 1.80 ± 0.75, P = 0.02). A trend between pre-LT VAT and diabetes was noted but did not reach statistical significance. CONCLUSIONS: VAT but not SAT increases rapidly after LT, especially among patients transplanted for NASH cirrhosis and predicts future metabolic burden.


Subject(s)
Diabetes Mellitus , Liver Transplantation , Non-alcoholic Fatty Liver Disease , Humans , Liver Transplantation/adverse effects , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/diagnosis , Non-alcoholic Fatty Liver Disease/surgery , Diabetes Mellitus/pathology , Adipose Tissue , Liver Cirrhosis/diagnosis , Liver Cirrhosis/surgery , Liver Cirrhosis/complications , Disease Progression , Intra-Abdominal Fat/diagnostic imaging , Intra-Abdominal Fat/metabolism
17.
Transplantation ; 108(2): 473-482, 2024 Feb 01.
Article in English | MEDLINE | ID: mdl-37439778

ABSTRACT

BACKGROUND: Liver transplantation (LT) offers patients with decompensated cirrhosis the best chance at long-term survival. With the rising prevalence of diabetes, further clarity is needed on the impact of receiving a liver allograft from a donor with diabetes on post-LT outcomes. This study aims to evaluate the impact of donor diabetes on clinical outcomes after LT. METHODS: This is a retrospective analysis of the United Network for Organ Sharing registry data of LT recipients from January 1, 2000, to December 31, 2021. Outcomes analysis was performed using Cox proportional model for all-cause mortality and graft failure. Confounding was reduced by coarsened exact matching causal inference analysis. RESULTS: Of 66 960 donors identified, 7178 (10.7%) had diabetes. Trend analysis revealed a longitudinal increase in the prevalence of donor diabetes ( P < 0.001). Importantly, donor diabetes was associated with increased all-cause mortality (hazard ratio [HR]: 1.13; 95% confidence interval [CI], 1.07-1.19; P < 0.001) and graft failure (HR: 1.16; 95% CI, 1.11-1.22; P < 0.001). Receiving donor organ with diabetes reduced graft survival in patients who received LT for nonalcoholic steatohepatitis cirrhosis (HR: 1.26; 95% CI, 1.13-1.41; P < 0.001) but not other etiologies of cirrhosis. CONCLUSIONS: Donor diabetes was associated with worse outcomes post-LT, particularly in patients receiving LT for nonalcoholic steatohepatitis cirrhosis. Future studies are needed to better understand the mechanism underlying this association to develop better risk stratification and clinical practice to improve the outcomes of the transplanted patients.


Subject(s)
Diabetes Mellitus , Liver Transplantation , Non-alcoholic Fatty Liver Disease , Humans , Liver Transplantation/adverse effects , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/surgery , Retrospective Studies , Treatment Outcome , Liver Cirrhosis/surgery , Liver Cirrhosis/etiology , Diabetes Mellitus/epidemiology , Diabetes Mellitus/etiology , Risk Factors , Graft Survival
18.
Endoscopy ; 56(1): 56-62, 2024 Jan.
Article in English | MEDLINE | ID: mdl-37532114

ABSTRACT

BACKGROUND: The goals of therapy for patients with nonalcoholic fatty liver disease and compensated advanced chronic liver disease include weight loss and reduction of the portosystemic pressure gradient (PPG) to decrease the risk of hepatic decompensation. Endoscopic gastric plication (EGP) is an effective endoscopic weight loss procedure. This study aimed to assess the effect of EGP on PPG. METHODS: In this prospective pilot study, patients with nonalcoholic fatty liver disease and compensated advanced chronic liver disease underwent endoscopic ultrasound-guided PPG measurement prior to and at 6 months following EGP. Primary outcomes were the change in PPG and proportion of patients experiencing ≥ 20 % reduction in PPG at 6 months. Secondary outcomes included percent total weight loss (TWL) and changes in noninvasive tests of fibrosis. RESULTS: 20 patients were included. Baseline median body mass index and liver stiffness measurement were 40.2 kg/m2 (range 30.1-56.7) and 14.7 kPa (range 8.2-36), respectively. At 6 months, median PPG decreased from 5.4 mmHg (range 0.7-19.6) to 1.8 mmHg (range 0.4-17.6) (P = 0.002), with 79 % (11/14) experiencing ≥ 20 % reduction. Patients experienced 12.5 % (6.5 %-26.1 %) TWL (P < 0.001) at 6 months, with 89 % (17/19) achieving ≥ 7 % and 68 % (13/19) achieving ≥ 10 % TWL. There were significant improvements in noninvasive tests of fibrosis. CONCLUSION: EGP appeared to be effective at reducing PPG in patients with nonalcoholic fatty liver disease and compensated advanced chronic liver disease.


Subject(s)
Non-alcoholic Fatty Liver Disease , Humans , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/diagnosis , Non-alcoholic Fatty Liver Disease/surgery , Prospective Studies , Pilot Projects , Treatment Outcome , Liver , Liver Cirrhosis/complications , Liver Cirrhosis/pathology , Weight Loss
19.
Liver Int ; 44(2): 422-432, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38010979

ABSTRACT

BACKGROUND & AIMS: If alcohol-related liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD) are now the two main indications for liver transplantation (LT), it has been recognized that both conditions can coexist in varying degrees and the concept of dual-aetiology fatty liver disease (DAFLD) has been proposed. This retrospective study aimed to evaluate, in a cohort of patients transplanted for ALD and NAFLD, the prevalence of DAFLD before LT and the impact on liver graft outcome. METHODS: From 1990 to 2010, all patients who underwent LT for the so-called ALD or NAFLD in our centre were included. Before LT, DAFLD was defined as patients with a history of excessive alcohol consumption and obesity associated with either diabetes or hypertension. Before LT, patients were separated into three groups: DAFLD, ALD, and NAFLD. Fatty liver graft disease was classified according to the FLIP algorithm. RESULTS: Out of 907, adult LT recipients were identified: 33 DAFLD patients, 333 ALD patients, and 24 NAFLD patients. After LT, ALD patients experienced significantly more alcohol relapse than DAFLD patients, who had twice more post-LT metabolic syndrome. Out of 926, post-LT biopsies, DAFLD patients had significantly more fatty liver graft disease due to metabolic syndrome features than ALD patients. CONCLUSION: Our results support that DAFLD recently emerged as an indication of LT. In the future, this particular population needs to be identified as a specific entity since post-LT outcome on the graft is different from ALD and more similar to NAFLD patients.


Subject(s)
Liver Diseases, Alcoholic , Liver Transplantation , Metabolic Syndrome , Non-alcoholic Fatty Liver Disease , Adult , Humans , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/epidemiology , Non-alcoholic Fatty Liver Disease/surgery , Liver Diseases, Alcoholic/complications , Liver Diseases, Alcoholic/epidemiology , Liver Diseases, Alcoholic/surgery , Metabolic Syndrome/complications , Metabolic Syndrome/epidemiology , Retrospective Studies , Recurrence
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