Comparing the effects of tofogliflozin and pioglitazone in non-alcoholic fatty liver disease patients with type 2 diabetes mellitus (ToPiND study): a randomized prospective open-label controlled trial

Update in non-alcoholic fatty liver disease management: role of sodium-glucose cotransporter 2 inhibitors

Non-alcoholic fatty liver disease (NAFLD) is characterized by excessive lipid accumulation in hepatocytes without significant alcohol consumption. It is closely associated with sedentarism, hypercaloric diets, obesity, dyslipidemia, insulin resistance, type 2 diabetes mellitus, and genetic predisposition. NAFLD comprises a spectrum of liver disorders, from simple steatosis to non-alcoholic (NASH) and liver cirrhosis. The complex etiological mechanisms include oxidative stress, inflammation, apoptosis, and fibrosis; therefore, its management is challenging. Sodium-glucose cotransporter type 2 inhibitors (SGLT2i), a class of antidiabetic drugs, have emerged as promising therapeutic agents due to their ability to improve key metabolic parameters, including obesity, dyslipidemia, insulin resistance, and hyperglycemia. This review explores the cellular mechanisms by which SGLT2i, either as monotherapy or combined with other treatments, modulate signaling pathways involved in lipid and carbohydrate metabolism. Additionally, we examine their effects on oxidative stress, inflammation, fibrosis, and apoptosis, which are critical drivers of NAFLD progression. This review is intended to summarize the multiple benefits of SGLT2 inhibitors and to educate healthcare providers on the therapeutic potential of these drugs in order to foster their incorporation into effective NAFLD management plans.

Efficacy of Hypoglycemic Agents in Metabolic Dysfunction Associated Steatotic Liver Disease (MASLD): A Systematic Review and Network Meta-Analysis

AIMS

Metabolic dysfunction associated steatotic liver disease (MASLD) is a universal hepatic disease, and many recent randomized clinical trials (RCTs) have explored whether hypoglycemic agents may be beneficial for its treatment. This study aimed to assess the relative effectiveness of each hypoglycemic agent for MASLD.

METHODS

China National Knowledge Infrastructure（CNKI）, WanFang, Weipu, PubMed, Embase, The Cochrane Library, and Web of Science Core Collection were searched for RCTs on the efficacy of hypoglycemic agents in MASLD published up to December 31, 2024. All statistical analyses were performed using R version 4.3.3. The network meta-analysis was conducted using Bayesian statistical methods.

RESULTS

A total of 26 hypoglycemic agents for treating MASLD in 37 studies with 2406 participants were included. Empagliflozin was most effective in improving liver stiffness measurement (LSM), whereas liraglutide showed significant benefits in body weight, body mass index (BMI), and waist circumference. Both sodium-glucose co-transporter 2 (SGLT-2) inhibitors (e.g., empagliflozin) and glucagon-like peptide-1 (GLP-1) receptor agonists (e.g., liraglutide) improved liver enzymes (alanine aminotransferase [ALT], aspartate aminotransferase [AST], gamma-glutamyltransferase [GGT]), glucose metabolism (fasting plasma glucose [FPG], and homeostasis model assessment of insulin resistance [HOMA-IR]), and lipid profiles. Pioglitazone had limited benefits in these outcomes. Secondary outcomes such as inflammatory markers and fibrosis showed minimal changes.

CONCLUSIONS

Several hypoglycemic agents can improve laboratory and imaging indicators in adult patients with MASLD. Liraglutide is more effective than other agents, whereas empagliflozin emerged as the most effective for reducing LSM. However, different agents have different effects on the indicators; therefore, the relevant agents must be selected according to the specific patient condition.

Comparative efficacy and safety of pharmacologic therapies for metabolic dysfunction-associated steatotic liver disease over 24 weeks in reducing liver steatosis and fibrosis: A network meta-analysis

AIMS

Metabolic-associated steatotic liver disease (MASLD) is a prevalent chronic liver condition associated with significant morbidity and mortality. Effective pharmacological interventions targeting liver steatosis and fibrosis are essential to improving patient outcomes. This study aims to systematically compare the efficacy and safety of various pharmacologic therapies for MASLD over 24 weeks using a comprehensive network meta-analysis.

MATERIALS AND METHODS

A systematic review and network meta-analysis were conducted on randomized controlled trials (RCTs) evaluating pharmacologic treatments for MASLD. The primary outcomes were changes in liver steatosis (measured by magnetic resonance imaging proton density fat fraction) and fibrosis (measured by magnetic resonance elastography-derived liver stiffness measurement), with safety assessed through adverse events. A Bayesian framework was employed to integrate and compare data across treatments, generating rankings for efficacy and safety.

RESULTS

A systematic search was conducted across databases, identifying 23 RCTs from 10 144 initial records. For steatosis reduction, resmetirom showed the most significant improvement (mean difference: -3.86, 95% confidence interval [CI]: -7.33 to -0.39) compared with placebo. In terms of fibrosis improvement, pegozafermin demonstrated the greatest effect (-4.85, 95% CI: -5.50 to -4.19). Most treatments showed acceptable safety profiles, with efruxifermin showing slightly higher adverse events (0.32, 95% CI: 0.06-0.70) compared with placebo.

CONCLUSIONS

This comprehensive network meta-analysis demonstrates the varying efficacy of pharmacologic interventions for MASLD, with resmetirom and pegozafermin emerging as particularly promising treatments for steatosis and fibrosis, respectively. While most treatments exhibited favourable safety profiles, careful monitoring is warranted, particularly with efruxifermin due to its slightly elevated adverse event profile. These findings provide valuable evidence to guide clinical decision-making in MASLD management, though longer-term studies are needed to confirm the durability of these therapeutic effects and further establish safety profiles.

Identification of drug combinations to reduce the risk of pioglitazone-related bladder cancer using the FDA adverse event reporting system database

BACKGROUND

Emerging studies have uncovered the innovative pharmacological characteristics of pioglitazone (PLZ). However, concerns regarding the potential link to an increased risk of bladder cancer (BC) had constrained its clinical application.

RESEARCH DESIGN AND METHODS

BC reports associated with PLZ and drug combinations containing PLZ from 1 January 2004 to 30 September 2024 were identified from the Food and Drug Administration Adverse Event Reporting System (FAERS) database. Reporting odds ratio (ROR) and Bayesian confidence propagation neural network (BCPNN) method was applied to mine adverse drug event signals.

RESULTS

Of 144 combinations, 15 showed an IC025 greater than 3, denoting a strong signal; 44 had an IC025 between 1.5 and 3, indicating moderate signal intensity; 36 had an IC025 between 0 and 1.5, pointing to a weak signal; and 49 had an IC025 less than 0, suggesting no apparent related signal. Importantly, the IC025 values for all drug combinations did not surpass the value observed when PLZ was used as monotherapy.

CONCLUSIONS

Through comprehensive data mining, 14 PTs associated with BC were identified, indicating that specific medication combinations might mitigate the risk of PLZ-related BC. Our findings offer valuable insights for guiding decisions on PLZ combination therapies.

Model-Based Meta-Analysis of the Relationship Between Pioglitazone and Histological Outcomes in Metabolic Dysfunction-Associated Steatohepatitis Patients

Given the high prevalence of the population who have metabolic dysfunction-associated steatohepatitis (MASH), interest is growing in MASH-targeted treatments. However, currently, there has been only one regulatory approved drug for MASH (Rezdiffra). Pioglitazone, a commonly used type 2 diabetes mellitus drug, is currently used off-label for the treatment of MASH. Our study aimed to perform a model-based meta-analysis to quantitatively examine the efficacy of pioglitazone in improving histological parameters and liver enzymes in patients with MASH. A comprehensive search was performed in Pubmed and clinicaltrials.gov. We collected histological outcomes (including steatosis, inflammation, ballooning, and fibrosis) and liver enzyme data. Due to sparse data, the gathered histological outcomes were used to generate virtual data. Next, model development for the virtual histological dataset was performed using a logistic model. In addition, Weibull and exponential models were tested to find the best fit for liver enzyme data. Model evaluations were carried out by visual predictive check, bootstrap method, and stacked bar plot. Eight studies with 540 patients were included. A logit model was used to analyze four outcomes. The results showed that using pioglitazone improved all four histological parameters. These effects are dose- and time-dependent under the Emax-time model for steatosis and ballooning, and under the linear relationship for inflammation and fibrosis. For liver enzymes, the Weibull model fitted well for both ALT and AST data. In conclusion, the developed models of pioglitazone may serve as a benchmark to assess the effectiveness of novel MASH-targeted treatments.

Comparison of efficacy and safety of pioglitazone and SGLT2 inhibitors in treating Asian patients in MASLD associated with type 2 diabetes: A meta-analysis

OBJECTIVE

To comprehensively evaluate the therapeutic efficacy of pioglitazone and SGLT2 inhibitors (SGLT2i) in patients with MASLD and Type 2 Diabetes(T2DM).

METHODS

Electronic databases, including Web of Science, PubMed, the Cochrane Library, China National Knowledge Internet (CNKI), Wan-Fang Digital Database, and China Science and Technology Journal Database (VIP) were searched from inception to December 2024. Two reviewers independently assessed study eligibility, performed continuous data extraction， and independently evaluated bias risks. Liver ultrasonography, computed tomography (CT), and biochemical indices were utilized to determine the impact of treatment in both groups. Improvement in liver biomarkers and fibrosis as primary outcome indicators; Improvement in body composition, metabolic parameters, glucose parameters, and incidence of adverse effects as a secondary outcome indicator. For continuous variables, mean and standard deviation (SD) were extracted. RevMan 5.4 software was used to systematically analyze the literature, including heterogeneity testing, odds ratios (OR) calculation, and 95 % confidence intervals (CI) for each influencing factor.

RESULTS

Nine randomly controlled trials with 755 Asian participants were included. Our research showed that SGLT2i was more effective than pioglitazone in improving fibrosis-4 score (SMD 0.41 [95%CI 0.18,0.64] p = 0.005), visceral fat area (SMD 0.34 [95%CI 0.14,0.54] p = 0.0007), BMI (SMD 0.29 [95%CI 0.03,0.56] p = 0.03), and low-density lipoprotein levels (SMD 0.21 [95%CI 0.04,0.38] p = 0.01). In contrast, no statistically significant differences were observed in other outcomes.

CONCLUSIONS

Our study demonstrated that in patients with MASLD and T2DM, SGLT2i was more effective overall in improving liver fibrosis, blood lipids, liver fat, and body composition in the short term. These findings establish a theoretical basis for safe and rational drug use in clinical practice. Additionally, they may contribute to new insights into the pathogenesis of MASLD and type 2 diabetes and drug discovery and development efforts.

Pharmacological treatment options for metabolic dysfunction-associated steatotic liver disease in patients with type 2 diabetes mellitus: A systematic review

BACKGROUND

Metabolic dysfunction-associated steatotic liver disease (MASLD) is closely related to type 2 diabetes mellitus (T2DM) through a common root in insulin resistance. The more severe stage, metabolic dysfunction-associated steatohepatitis (MASH), increases the risk for cardiovascular complications, liver cirrhosis and hepatocellular carcinoma. Several trials investigating established antidiabetic-drugs in patients with T2DM and MASLD have yielded promising results. Therefore, we aimed to systematically review the effect of T2DM-drug treatment on MALSD parameters.

METHODS

Medical databases were searched until January 2025 for controlled trials in patients with T2DM and MASLD/MASH. Studies that evaluated the effect of T2DM-medication on the severity of MASLD/MASH in T2DM patients were included. The quality of the studies was assessed by three independent reviewers using a set of Cochrane risk-of-bias tools.

RESULTS

Of 1748 references, 117 studies fulfilled the inclusion-criteria and were assessed for eligibility in full-text. Fifty-two articles were included. Data included a total of 64.708 patients and study populations ranged from 9 to 50.742. Heterogeneity in study-design and analysis hampered the comparability of the results. Most evidence was present for GLP-1 receptor agonists, SGLT2-inhibitors and PPAR-γ-agonists for regression of liver fibrosis and MASH.

CONCLUSION

Studies on the value of T2DM-drug treatment in the improvement of MASLD vary significantly in study design, size and quality. GLP-1 receptor agonists, PPAR-γ-agonists, SGLT2-inhibitors may all be preferred pharmacological interventions for patients with MASLD/MASH and T2DM. Newer agents like dual GLP-1/GIP or triple GLP-1/GIP/Glucagon agonists will likely play an important role in the treatment of MASLD/MASH in the near future.

Post-hoc analysis of the tofogliflozin post-marketing surveillance study (J-STEP/LT): Tofogliflozin improves liver function in type 2 diabetes patients regardless of BMI

AIMS/INTRODUCTION

Patients with type 2 diabetes are at high risk of developing steatotic liver disease (SLD). Weight loss has proven effective in treating metabolic dysfunction-associated steatotic liver disease (MASLD) in obese patients with type 2 diabetes, with sodium-glucose cotransporter 2 (SGLT2) inhibitors showing promising results. However, lean MASLD is more prevalent in Japan, necessitating alternative approaches to body weight reduction.

MATERIALS AND METHODS

We used the J-STEP/LT dataset including up to 3-year treatment data to analyze the effects of the SGLT2 inhibitor tofogliflozin on liver function and treatment safety and conducted a subgroup analysis based on body mass index (BMI; kg/m2, <20, 20-<23, 23-<25, 25-<30, and ≥30).

RESULTS

This study included 4,208 participants. Tofogliflozin significantly reduced alanine aminotransferase (ALT) levels in participants with baseline ALT levels >30 U/L across all BMI groups, with median changes of -12, -16, -13, -15, and -15 U/L, respectively (P = 0.9291 for trends). However, median changes in body weight with tofogliflozin were -2.00, -2.75, -2.00, -3.00, and -3.80 kg, respectively (P < 0.0001 for trends), with no significant weight loss observed in the BMI <20 group. ALT levels were also significantly decreased in participants who did not lose weight. Safety assessments according to BMI and age categories revealed no clear differences in the frequency of adverse events.

CONCLUSIONS

Tofogliflozin reduced ALT levels without substantial body weight reduction among lean participants. These findings suggest that SGLT2 inhibitors may be a viable treatment option for non-obese patients with type 2 diabetes and SLD.

Comparison of Glucagon-Like Peptide-1 Receptor Agonists and Sodium-Glucose Cotransporter Protein-2 Inhibitors on Treating Metabolic Dysfunction-Associated Steatotic Liver Disease or Metabolic Dysfunction-Associated Steatohepatitis: Systematic Review and Network Meta-Analysis of Randomised Controlled Trials

OBJECTIVE

To assess glucagon-like peptide-1 receptor agonists (GLP-1 receptor agonists) and sodium-glucose cotransporter protein-2 inhibitors (SGLT-2 inhibitors) in patients with metabolic dysfunction-associated steatotic liver disease or metabolic dysfunction-associated steatohepatitis (previously known as nonalcoholic fatty liver disease [NAFLD] and nonalcoholic steatohepatitis [NASH]), we performed a systematic review and network meta-analysis of randomized controlled trials.

METHODS

The study searched Pubmed, Embase, the Cochrane Library, and Web of Science databases up to November 26, 2023. Two reviewers independently selected the studies, extracted the data, and assessed the risk of bias.

RESULTS

Thirty-seven studies were included in the analysis. GLP-1 receptor agonists were found to be more effective than placebo in resolving NASH (relative risk: 2.48, 95% CI:1.86 to 3.30). Both drugs were superior to placebo in reducing liver fat content, as well as decreasing levels of liver enzyme. Network meta-analysis indicated that SGLT-2 inhibitors were more effective than GLP-1 receptor agonists in reducing alanine aminotransferase and aspartate aminotransferase levels. According to the surface under the cumulative probability ranking curve values, GLP-1 receptor agonists and SGLT-2 inhibitors consistently ranked among the top 2 in terms of reducing anthropometric data compared to other included drugs.

CONCLUSIONS

GLP-1 receptor agonists and SGLT-2 inhibitors have significant effects on reducing liver fat content and liver enzymes in NAFLD or NASH patients compared to placebo. GLP-1 receptor agonists were found to be superior to placebo in resolving NASH. SGLT-2 inhibitors were more effective than GLP-1 receptor agonists in reducing alanine aminotransferase and aspartate aminotransferase levels.

Emerging horizons: clinical applications and multifaceted benefits of SGLT-2 inhibitors beyond diabetes

SGLT-2 inhibitors, initially developed for type 2 diabetes, demonstrate profound cardiorenal and metabolic benefits. This review synthesizes evidence from clinical trials and mechanistic studies to elucidate their roles in cardiovascular diseases, chronic kidney disease, and non-alcoholic fatty liver disease. Key findings include a notable reduction in cardiovascular death/heart failure hospitalization, a marked decrease in heart failure hospitalization risk, and significant improvements in renal and hepatic outcomes. Emerging mechanisms, such as autophagy induction, ketone utilization, and anti-inflammatory effects, underpin these benefits. Ongoing trials explore their potential in non-diabetic populations, positioning SGLT-2 inhibitors as transformative agents in multisystem disease management.

Efficacy and safety of dapagliflozin compared to pioglitazone in diabetic and non-diabetic patients with non-alcoholic steatohepatitis: A randomized clinical trial

BACKGROUND

Non-alcoholic steatohepatitis (NASH) is a serious end-stage spectrum of non-alcoholic fatty liver disease (NAFLD) with associated high risk of hepatic and extrahepatic complications. Several studies showed the significant beneficial effect of dapagliflozin on body composition, hepatic and metabolic parameters on NAFLD/NASH patients. The study aimed to investigate the efficacy and safety of dapagliflozin in both diabetic and non-diabetic biopsy-proven NASH patients; compared to pioglitazone.

METHODS

This was a four-group, prospective, randomized, parallel, open label study in which 100 biopsy-proven NASH patients were selected, stratified to diabetics and non-diabetics and randomized with 1:1 allocation to either 30 mg pioglitazone or 10 mg dapagliflozin, once daily for 24 weeks. Histological evaluation, anthropometric measures, hepatic, metabolic biochemical markers, fibrosis non-invasive markers, quality of life (QOL) and medications adverse events were examined.

RESULTS

Dapagliflozin showed a comparable histological effect to pioglitazone in both diabetic and non-diabetic patients (P>0.05). As assessed by transient elastography, it also showed a comparable effect on liver fibrosis grade improvement from baseline in diabetics (P=0.287) versus a significant superiority in non-diabetics (P=0.018). Dapagliflozin showed a significant superiority in all anthropometric measures (P<0.001) and QOL (P<0.05) among both diabetics and non-diabetics. There was a significant interaction between interventions and diabetes status on change from baseline of hepatic and metabolic panel collectively (P=0.023) in favor to dapagliflozin among diabetics.

CONCLUSION

Compared to pioglitazone, dapagliflozin had a comparable effect histologically, superior effect biochemically among diabetics and superior effect on liver fibrosis, steatosis and insulin resistance among non-diabetics.

TRIAL REGISTRATION

The study was registered on clinicaltrials.gov, identifier number NCT05254626.

The Many Facets of PPAR-γ Agonism in Obesity and Associated Comorbidities: Benefits, Risks, Challenges, and Future Directions

PURPOSE OF REVIEW

Obesity is strongly associated with cardiometabolic disorders and certain malignancies, emphasizing the key role of adipose tissue in human health. While incretin mimetics have shown effectiveness in glycemic control and weight loss, a holistic strategy for combating obesity and associated comorbidities remains elusive. This review explores peroxisome proliferator-activated receptor gamma (PPAR-γ) agonism as a potential therapeutic approach, highlighting its benefits, addressing its limitations, and outlining future directions for developing more effective treatment strategies.

RECENT FINDINGS

Both natural and synthetic PPAR-γ agonists hold significant therapeutic potential as insulin sensitizers, while also demonstrating anti-inflammatory properties and playing a critical role in regulating lipid metabolism. However, the clinical use of natural agonists is limited by poor bioavailability, while synthetic agents like thiazolidinediones are associated with adverse effects, including fluid retention, weight gain, and bone loss. Current research is focused on developing modified, tissue-specific PPAR-γ agonists, as well as dual PPAR-α/PPAR-γ agonists, with improved safety profiles to mitigate these side effects. Nanotechnology-based drug delivery systems also hold promise for enhancing bioavailability and therapeutic efficacy. Furthermore, the transformative potential of machine learning and artificial intelligence offers opportunities to accelerate advancements in this field. PPAR-γ agonists exhibit significant potential in addressing metabolic syndrome, cardiovascular disease, and cancer. However, their clinical use is restricted by safety concerns and suboptimal pharmacokinetics. Innovations in modified PPAR-γ agonists, nanotechnology-based delivery systems, and computational tools hold promise for creating safer and more effective therapeutic options for obesity and its associated disorders.

The cellular and molecular mechanisms mediating the protective effects of sodium-glucose linked transporter 2 inhibitors against metabolic dysfunction-associated fatty liver disease

Metabolic dysfunction-associated fatty liver disease (MAFLD), formerly known as nonalcoholic fatty liver disease (NAFLD), is a common, highly heterogeneous condition that affects about a quarter of the world's population, with no approved drug therapy. Current evidence from preclinical research and a number of small clinical trials indicates that SGLT2 inhibitors could also be effective for MAFLD. MAFLD is associated with a higher risk of chronic liver disease and multiple extrahepatic events, especially cardiovascular disease (CVD) and chronic kidney disease (CKD). MAFLD is considered a more appropriate terminology than NAFLD because it captures the complex bidirectional interplay between fatty liver and metabolic dysfunctions associated with disease progression, such as obesity and type 2 diabetes mellitus (T2DM). SGLT2 inhibitors are antidiabetic drugs that block glucose reabsorption in the kidney proximal tubule. In this article, we reviewed current clinical evidence supporting the potential use of SGLT2 inhibitors as a drug therapy for MAFLD and discussed the possible cellular and molecular mechanisms involved. We also reviewed the clinical benefits of SGLT2 inhibitors against MAFLD-related comorbidities, especially CVD, CKD and cardiovascular-kidney-metabolic syndrome (CKM). The broad beneficial effects of SGLT2 inhibitors support their use, likely in combination with other drugs, as a therapy for MAFLD.

Drug Advances in NAFLD: Individual and Combination Treatment Strategies of Natural Products and Small-Synthetic-Molecule Drugs

Non-alcoholic fatty liver disease (NAFLD) has become the most common chronic liver disease and is closely associated with metabolic diseases such as obesity, type 2 diabetes mellitus (T2DM), and metabolic syndrome. However, effective treatment strategies for NAFLD are still lacking. In recent years, progress has been made in understanding the pathogenesis of NAFLD, identifying multiple therapeutic targets and providing new directions for drug development. This review summarizes the recent advances in the treatment of NAFLD, focusing on the mechanisms of action of natural products, small-synthetic-molecule drugs, and combination therapy strategies. This review aims to provide new insights and strategies in treating NAFLD.

Drug treatment for metabolic dysfunction-associated steatotic liver disease: Progress and direction

Metabolic dysfunction-associated steatotic liver disease (MASLD), also called non-alcoholic fatty liver disease, is the most epidemic chronic liver disease worldwide. Metabolic dysfunction-associated steatohepatitis (MASH) is the critical stage of MASLD, and early diagnosis and treatment of MASH are crucial for reducing the incidence of intrahepatic and extrahepatic complications. So far, pharmacotherapeutics for the treatment of MASH are still a major challenge, because of the complexity of the pathogenesis and heterogeneity of MASH. Many agents under investigation have shown impressive therapeutic effects by targeting different key pathways, including the attenuation of steatohepatitis or fibrosis or both. It is notable that thyroid hormone receptor-β agonist, resmetirom has become the first officially approved drug for treating MASH with fibrosis. Other agents such as peroxisome proliferator-activated receptor agonists, glucagon-like peptide-1 analogs, and fibroblast growth factor 21 analogs are awaiting approval. This review focuses on the current status of drug therapy for MASH and summarizes the latest results of new medications that have completed phase 2 or 3 clinical trials, and presents the future directions and difficulties of new drug research for MASH.

Role of MASLD in CVD: A review of emerging treatment options

Metabolic dysfunction-associated steatotic liver disease (MASLD), represents a growing health concern due to its strong association with metabolic syndrome, obesity, and type 2 diabetes mellitus (T2DM). This condition, characterized by excessive fat accumulation in the liver not attributed to alcohol consumption, has emerged as a leading cause of chronic liver disease globally. MASLD significantly elevates the risk of major adverse cardiovascular events (MACE) through mechanisms like increased oxidative stress, insulin resistance, and chronic inflammation, all of which contribute to the development of atherosclerosis and endothelial dysfunction. Effective management of MASLD is crucial not only for liver health but also for cardiovascular disease (CVD) prevention. Lifestyle modifications, particularly weight loss achieved through dietary changes and increased physical activity, are the cornerstone of MASLD treatment. Additionally, pharmacological interventions, especially antihyperglycemic agents, play a pivotal role in treating MASLD in patients with T2DM. Novel therapeutic agents targeting various pathways of metabolic and liver dysfunction are under investigation, offering hope for more effective management strategies. This review explores the interconnectedness of MASLD and CVD, highlighting current and emerging therapeutic approaches.

Review of current and new drugs for the treatment of metabolic-associated fatty liver disease

In the past 3 decades, metabolic-associated fatty liver disease (MAFLD) has emerged as a widespread liver condition, with its global prevalence on the rise. It ranks as a leading contributor to hepatocellular carcinoma (HCC) and necessitates liver transplantation. Under the multiple parallel hits model, the pathogenesis of MAFLD stems from various liver stressors, notably nutrient overload and sedentary lifestyles. While medical management for MAFLD is well-established, encompassing non-pharmaceutical and pharmaceutical interventions, determining the most effective pharmaceutical therapy has remained elusive. This review discusses diabetic medications for MAFLD treatment, emphasizing recent studies and emerging drugs while reviewing other nondiabetic agents. Emerging evidence suggests that combination therapies hold promise for resolving MAFLD and metabolic steatohepatitis (MASH) while managing side effects. Ongoing trials play a pivotal role in elucidating the effects of mono, dual, and triple receptor agonists in individuals with MASH. With the rising burden of MAFLD/MASH and its severe consequences, the need for effective treatments is more pressing than ever. This review provides a comprehensive overview of the current landscape of pharmaceutical interventions for MAFLD and MASH, shedding light on the potential of newer drugs especially diabetic medications and the importance of ongoing research in this field.

Effects of empagliflozin on liver fat in patients with metabolic dysfunction-associated steatotic liver disease without diabetes mellitus: A randomized, double-blind, placebo-controlled trial

BACKGROUND AND AIMS

We investigated whether empagliflozin reduces hepatic steatosis in patients with metabolic dysfunction-associated steatotic liver disease without diabetes mellitus.

APPROACH AND RESULTS

This was an investigator-initiated, double-blind, randomized, placebo-controlled trial recruiting adult subjects from the community. Eligible subjects without diabetes mellitus (fasting plasma glucose < 7 mmol/L and HbA1c < 6.5%) who had magnetic resonance imaging-proton density fat fraction (MRI-PDFF) ≥ 5% were randomly allocated to receive empagliflozin 10 mg daily or placebo (1:1 ratio) for 52 weeks (end of treatment, EOT). MRI-PDFF was conducted at baseline and EOT. The primary outcome was the difference in change of MRI-PDFF between the 2 groups at EOT. Secondary outcomes were hepatic steatosis resolution (MRI-PDFF < 5%), alanine aminotransferase drop ≥ 17 U/L, MRI-PDFF decline ≥ 30%, a combination of both, and changes of anthropometric and laboratory parameters at EOT. All outcomes were based on intention-to-treat analysis. Of 98 recruited subjects (median age: 55.7 y [IQR:49.5-63.4]; male:54 [55.1%]), 97 (empagliflozin:49, placebo:48; median MRI-PDFF:9.7% vs 9.0%) had MRI-PDFF repeated at EOT. The Empagliflozin group had a greater reduction in median MRI-PDFF compared to the placebo group (-2.49% vs. -1.43%; p = 0.025), with a nonsignificant trend of resolution of hepatic steatosis (44.9% vs. 28.6%; p = 0.094). There was no significant difference in alanine aminotransferase drop ≥ 17 U/L (16.3% vs. 12.2%; p = 0.564), MRI-PDFF drop ≥ 30% (49.0% vs. 40.8%; p = 0.417), and composite outcome (8.2% vs. 8.2%; p = 1.000). Empagliflozin group had a greater drop in body weight (-2.7 vs. -0.2 kg), waist circumference (-2.0 vs. 0 cm), fasting glucose (-0.3 vs. 0 mmol/L), and ferritin (-126 vs. -22 pmol/L) (all p < 0.05).

CONCLUSIONS

Empagliflozin for 52 weeks reduces hepatic fat content in subjects with nondiabetic metabolic dysfunction-associated steatotic liver disease. (ClinicalTrials.gov Identifier: NCT04642261).

Nonalcoholic Fatty Liver Disease and Cardiovascular Disease: Causation or Association

Nonalcoholic fatty liver disease (NAFLD) is a disease process that is gaining increasing recognition. The global prevalence of NAFLD is increasing in parallel with growing rates of risk factors for NAFLD such as hypertension, obesity, diabetes, and metabolic syndrome. NAFLD has been referred to as a risk factor for cardiovascular disease (CVD). As CVD is the leading cause of morbidity and mortality worldwide, there are constant efforts to describe and alleviate its risk factors. Although there is conflicting data supporting NAFLD as a causative or associative factor for CVD, NAFLD has been shown to be associated with structural, electrical, and atherosclerotic disease processes of the heart. Shared risk factors and pathophysiologic mechanisms between NAFLD and CVD warrant further explication. Pathologic mechanisms such as endothelial dysfunction, oxidative stress, insulin resistance, genetic underpinnings, and gut microbiota dysregulation have been described in both CVD and NAFLD. The mainstay of treatment for NAFLD is lifestyle intervention including physical exercise and hypocaloric intake in addition to bariatric surgery. Investigations into various therapeutic targets to alleviate hepatic steatosis and fibrosis by way of maintaining the balance between lipid synthesis and breakdown. A major obstacle preventing the success of many pharmacologic approaches has been the effects of these medications on CVD risk. The future of pharmacologic treatment of NAFLD is promising as effective medications with limited CVD harm are being investigated.

Update on the clinical applications of SGLTis: Insight to benefits beyond hypoglycemic and cardiorenal protection

Sodium glucose cotransporter inhibitor (SGLTi) drugs have been widely used in clinical practice. In addition to their benefits in hyperglycemia, heart failure (HF), and kidney disease, their effects on obesity, metabolic dysfunction-associated steatotic liver disease (MASLD, formerly named nonalcoholic fatty liver disease [NAFLD]), polycystic ovarian syndrome (PCOS), abnormal lipid metabolism, hyperuricemia, obstructive sleep apnea syndrome (OSAS), anemia, and syndrome of inappropriate antidiuresis (SIAD, formerly named syndrome of inappropriate antidiuretic hormone [SIADH]) have been explored. In this review, we searched the data of clinical randomized controlled trials (RCTs) and meta-analyses of SGLTis in patients with diabetes from the PubMed library between January 1, 2020, and February 1, 2024. According to our review, certain SGLTis exhibit relatively superior clinical safety and effectiveness for treating the abovementioned diseases. Proper utilization of SGLTis in these patients can provide additional medication options for patients with different disease scenarios. However, studies of SGLTis in these diseases are relatively rare, with shortcomings such as small sample sizes and short intervention periods. Therefore, further large-scale, long-term, well-designed studies are needed to clarify the findings.

Pea Albumin Extracted from Pea (Pisum sativum L.) Seeds Ameliorates High-Fat-Diet-Induced Non-Alcoholic Fatty Liver Disease by Regulating Lipogenesis and Lipolysis Pathways

Non-alcoholic fatty liver disease (NAFLD) is now recognized as the most prevalent liver disease globally. Pea albumin (PA) has demonstrated positive impacts on reducing obesity and improving glucose metabolism. In this research, a mouse model of NAFLD induced by a high-fat diet (HFD) was employed to examine the impact of PA on NAFLD and explore its potential mechanisms. The findings revealed that mice subjected to a HFD developed pronounced fatty liver alterations. The intervention with PA significantly lowered serum TC by 26.81%, TG by 43.55%, and LDL-C by 57.79%. It also elevated HDL-C levels by 1.2 fold and reduced serum ALT by 37.94% and AST by 31.21% in mice fed a HFD. These changes contributed to the reduction in hepatic steatosis and lipid accumulation. Additionally, PA improved insulin resistance and inhibited hepatic oxidative stress and inflammatory responses. Mechanistic studies revealed that PA alleviated lipid accumulation in HFD-induced NAFLD by activating the phosphorylation of AMPKα and ACC, inhibiting the expression of SREBF1 and FASN to reduce hepatic lipogenesis, and increasing the expression of ATGL, PPARα, and PPARγ to promote lipolysis and fatty acid oxidation. These results indicate that PA could serve as a dietary supplement for alleviating NAFLD, offering a theoretical foundation for the rational intake of PA in NAFLD intervention.

Epidemiology, screening, and co-management of type 2 diabetes mellitus and metabolic dysfunction-associated steatotic liver disease

Metabolic dysfunction-associated steatotic liver disease (MASLD), previously known as NAFLD, is increasingly recognized as a prevalent global burden. Type 2 diabetes mellitus (T2DM), another important metabolic disease, is considered a major contributor to the development of MASLD. MASLD and T2DM have a strong association with each other due to shared pathogenic mechanisms. The co-existence of the 2 diseases increases the risk of liver-related adverse outcomes and imposes a heavier burden on extrahepatic outcomes, representing a substantial public health issue. Effective assessment and management of T2DM combined with MASLD necessitate a multidisciplinary approach. The emergence of numerous RCTs has shed light on the treatment of T2DM combined with MASLD. This review uncovers the epidemiology of the intertwined T2DM and MASLD, offers insights into the evaluation of hepatic fibrosis in patients with T2DM, glucose monitoring in the MASLD population, and provides comprehensive co-management strategies for addressing both diseases.

Comparison of SGLT2 inhibitors vs. DPP4 inhibitors for patients with metabolic dysfunction associated fatty liver disease and diabetes mellitus

PURPOSE

This study aimed to examine the potential benefit of sodium-glucose cotransporter 2 (SGLT2) inhibitors for patients with metabolic dysfunction-associated fatty liver disease (MAFLD) and diabetes mellitus (DM) using a real-world database.

METHODS

We analyzed individuals with MAFLD and DM newly initiated on SGLT2 or dipeptidyl peptidase 4 (DPP4) inhibitors from a large-scale administrative claims database. The primary outcome was the change in the fatty liver index (FLI) assessed using a linear mixed-effects model from the initiation of SGLT2 or DPP4 inhibitors. A propensity score-matching algorithm was used to compare the change in FLI among SGLT2 and DPP4 inhibitors.

RESULTS

After propensity score matching, 6547 well-balanced pairs of SGLT2 and 6547 DPP4 inhibitor users were created. SGLT2 inhibitor use was associated with a greater decline in FLI than DPP4 inhibitor use (difference at 1-year measurement, - 3.8 [95% CI - 4.7 to - 3.0]). The advantage of SGLT2 inhibitor use over DPP4 inhibitor use for improvement in FLI was consistent across subgroups. The relationship between SGLT2 inhibitors and amelioration of FLI was comparable between individual SGLT2 inhibitors.

CONCLUSIONS

Our analysis using large-scale real-world data demonstrated the potential advantage of SGLT2 inhibitors over DPP4 inhibitors in patients with MAFLD and DM.

Efficacy of sodium glucose cotransporter 2 inhibitors on hepatic fibrosis and steatosis in non-alcoholic fatty liver disease: an updated systematic review and meta-analysis

Non-alcoholic fatty liver disease (NAFLD) is a substantial contributor to liver-related morbidity worldwide, and yet, there are no standard, universal pharmacologic therapies approved for this indication. The aim of this systematic review and meta-analysis is to evaluate the effectiveness of SGLT-2 inhibitors in improving hepatic steatosis and hepatic fibrosis in patients with NAFLD. An extensive electronic database search was done to identify studies published from inception until December 2023, without any language restrictions. All randomized controlled trials (RCT) that evaluated the use of SGLT-2 inhibitors for patients with NAFLD, regardless of diabetes mellitus status, were included. The Cochrane Risk of Bias 2.0 tool was used to assess the risk of bias of each study included. Evidence from all studies were synthesized as mean differences for continuous data, and as risk ratio for dichotomous outcomes. An inverse variance or Mantel-Haenszel test was used in conjunction with a random-effects meta-analysis model, where necessary. 18 eligible RCTs involving 1330 participants were analyzed, all of which had risk of bias ranging from low to some concerns. Significant difference in means was observed for controlled attenuation parameter (6 trials, n = 372; MD: - 10.59 dB/m, 95% CI [- 18.25, - 2.92], p = 0.007, I2 = 0%); L/S ratio (3 trials, n = 163; MD: 0.11, 95% CI [0.01, 0.21], p = 0.04, I2 = 78%); LSM (7 trials, n = 447; MD: - 0.67 kPa, 95% CI [- 1.19, - 0.16], p = 0.010, I2 = 69%); MRI-PDFF (5 trials, n = 330; MD: - 2.61%, 95% CI [- 5.05, - 0.17], p = 0.04, I2 = 78%), and FIB-4 index (10 trials, n = 648; MD: - 0.12, 95% CI [- 0.21, - 0.04], p = 0.005, I2 = 16%) after SGLT-2 inhibitor treatment as compared to controls. In conclusion, the use of SGLT-2 inhibitors may lead to slight improvement of hepatic steatosis and/or fibrosis as compared to controls in patients with NAFLD and Type 2 diabetes mellitus based on imaging and histopathology biomarkers with low to moderate certainty of evidence.

The role of anti-diabetic drugs in NAFLD. Have we found the Holy Grail? A narrative review

PURPOSE

Non-alcoholic fatty liver disease (NAFLD) has become a leading cause of liver disease, affecting 30% of the global population. NAFLD prevalence is particularly high in obese individuals and patients with type 2 diabetes mellitus (T2DM). NAFLD ranges from simple fat deposition in the liver to necroinflammation and fibrosis (non-alcoholic steatohepatitis (NASH)), NASH-cirrhosis, and/or hepatocellular carcinoma. Insulin resistance plays a key role in NAFLD pathogenesis, alongside dysregulation of adipocytes, mitochondrial dysfunction, genetic factors, and changes in gut microbiota. Since insulin resistance is also a major predisposing factor of T2DM, the administration of anti-diabetic drugs for the management of NAFLD seems reasonable.

METHODS

In this review we provide the NAFLD-associated mechanisms of action of some of the most widely used anti-diabetic drugs, namely metformin, pioglitazone, sodium-glucose transport protein-2 inhibitors (SGLT2i), glucagon-like peptide 1 receptor analogs (GLP1 RAs), and dipeptyl-peptidase-4 inhibitors (DPP4i) and present available data regarding their use in patients with NAFLD, with and without T2DM.

RESULTS

Both metformin and DPP4i have shown rather contradictory results, while pioglitazone seems to benefit patients with NASH and is thus the only drug approved for NASH with concomitant significant liver fibrosis by all major liver societies. On the other hand, SGLT2i and GLP1 RAs seem to be beneficiary in patients with NAFLD, showing both remarkable results, with SGLT2i proving to be more efficient in the only head-to-head study so far.

CONCLUSION

In patients with NAFLD and diabetes, pioglitazone, GLP1 RAs, and SGLT2i seem to be logical treatment options. Larger studies are needed before these drugs can be recommended for non-diabetic individuals.

Unraveling the link between insulin resistance and Non-alcoholic fatty liver disease (or metabolic dysfunction-associated steatotic liver disease): A Narrative Review

Objective

Non-alcoholic fatty liver disease (NAFLD) is rapidly becoming a significant global health concern, representing the leading cause of chronic liver disease and posing a substantial public health challenge. NAFLD is associated with higher insulin resistance (IR) levels, a key pathophysiological mechanism contributing to its development and progression. To counter this growing trend, it is crucial to raise awareness about NAFLD and promote healthy lifestyles to mitigate the impact of this disease.

Methods

Relevant studies regarding IR and NAFLD published until May 30, 2023, were extracted from Google PubMed, Scopus, and Web Of Science web databases. The following keywords were used: IR, diabetes mellitus, Non-alcoholic fatty liver disease, and metabolic syndrome.

Results

IR leads to an accumulation of fatty acids within liver cells, resulting from increased glycolysis and decreased apolipoprotein B-100. Furthermore, the manifestations of NAFLD extend beyond liver-related morbidity and mortality, affecting multiple organs and giving rise to various non-communicable disorders such as diabetes mellitus, metabolic syndrome, polycystic ovary syndrome, obstructive sleep apnea, and cardiovascular disease. Although lifestyle modification remains the primary treatment approach for NAFLD, alternative therapies, including pharmacological, herbal, and surgical interventions, may be considered. By implementing early and simple measures, cirrhosis, end-stage liver disease, and hepatocellular carcinoma can be prevented.

Conclusions

There is a clear association between NAFLD and elevated levels of IR. Several metabolic conditions, such as obesity, type 2 diabetes mellitus, dyslipidemia, and metabolic syndrome, are closely interrelated with NAFLD and IR. Raising awareness about NAFLD and promoting a healthy lifestyle are crucial steps to reverse the impact of this disease.

Comparative effectiveness of multiple different treatment regimens for nonalcoholic fatty liver disease with type 2 diabetes mellitus: a systematic review and Bayesian network meta-analysis of randomised controlled trials

BACKGROUND

Nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM) are closely related and mutually contribute to the disease's development. There are many treatment options available to patients. We provide a comprehensive overview of the evidence on the treatment effects of several potential interventions for NAFLD with T2DM.

METHODS

This systematic review and network meta-analysis included searches of PubMed, Embase, Cochrane Library, and Web of Science from inception to June 30, 2023, for randomised controlled trials of treatment of NAFLD with T2DM. We performed Bayesian network meta-analyses to summarise effect estimates of comparisons between interventions. We applied the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) frameworks to rate all comparative outcomes' certainty in effect estimates, categorise interventions, and present the findings. This study was registered with PROSPERO, CRD42022342373.

RESULTS

Four thousand three hundred and sixty-nine records were retrieved from the database and other methods, of which 24 records were eligible for studies enrolling 1589 participants. Eight clinical indicators and 14 interventions were finally in focus. Referring to the lower surface under the cumulative ranking curves (SUCRA) and the league matrix table, exenatide and liraglutide, which are also glucagon-like peptide-1 receptor agonists (GLP-1RAs), showed excellent potential to reduce liver fat content, control glycemia, reduce body weight, and improve liver function and insulin resistance. Exenatide was more effective in reducing glycated haemoglobin (HbA1c) (mean difference (MD) 0.32, 95%CI 0.12 to 0.52), lowering BMI (MD 0.81, 95%CI 0.18 to 1.45), and lowering alanine transaminase (ALT) (MD 10.96, 95%CI 5.27 to 16.66) compared to liraglutide. However, this evidence was assessed as low certainty. Omega-3 was the only intervention that did not have a tendency to lower HbA1c, with standard-treatment (STA-TRE) as reference (MD - 0.17, 95%CI - 0.42 to 0.07). Glimepiride is the only intervention that causes an increase in ALT levels, with standard-treatment (STA-TRE) as reference (MD - 11.72, 95%CI - 17.82 to - 5.57). Based on the available evidence, the treatment effects of pioglitazone, dapagliflozin, and liraglutide have a high degree of confidence.

CONCLUSIONS

The high confidence mandates the confident application of these findings as guides for clinical practice. Dapagliflozin and pioglitazone are used for glycaemic control in patients with NAFLD combined with T2DM, and liraglutide is used for weight loss therapy in patients with abdominal obesity. The available evidence does not demonstrate the credibility of the effectiveness of other interventions in reducing liver fat content, visceral fat area, ALT, and insulin resistance. Future studies should focus on the clinical application of GLP-1Ras and the long-term prognosis of patients.

Canagliflozin and Metabolic Associated Fatty Liver Disease in Patients With Diabetes Mellitus: New Insights From CANVAS

CONTEXT

Metabolic dysfunction-associated fatty liver disease (MAFLD) is highly prevalent among patients with type 2 diabetes mellitus (T2DM); however, there is still no approved pharmacological treatment. Sodium-glucose cotransporter 2 (SGLT-2) inhibitors have been suggested to beneficially modify liver-related outcomes in patients with diabetes.

OBJECTIVE

We aimed to investigate the effects of the SGLT-2 inhibitor canagliflozin on liver-related outcomes in patients with advanced T2DM and high cardiovascular risk.

METHODS

We performed a secondary post hoc analysis of 2 large double-blind randomized controlled trials, CANVAS (NCT01032629) and CANVAS-R (NCT01989754), which included patients with T2DM and high cardiovascular risk who were randomized to receive either canagliflozin or placebo once daily. The primary endpoint was a composite of improvement of alanine aminotransferase (ALT) levels >30% or normalization of ALT levels. Secondary endpoints included change in noninvasive tests of fibrosis and weight reduction of >10%.

RESULTS

In total, 10 131 patients were included, with a median follow-up of 2.4 years (mean age 62 years; mean duration of diabetes 13.5 years; 64.2% male). Of those patients, 8967 (88.5%) had MAFLD according to hepatic steatosis index and 2599 (25.7%) exhibited elevated liver biochemistry at baseline. The primary composite endpoint occurred in 35.2% of patients receiving canagliflozin and in 26.4% with placebo (adjusted odds ratio [aOR] 1.51; 95% CI, 1.38-1.64; P < .001). Canagliflozin led to improvements in some noninvasive tests of fibrosis (NFS, APRI, FNI). Significant weight reduction of >10% (within 6 years) was achieved in 12.7% with canagliflozin compared to 4.1% with placebo (aOR 3.45; 95% CI, 2.91-4.10; P < .001).

CONCLUSION

In patients with T2DM, treatment with canagliflozin vs placebo resulted in improvements in liver biochemistry and metabolism and might beneficially affect liver fibrosis.

Biomarkers for Assessing Non-Alcoholic Fatty Liver Disease in Patients with Type 2 Diabetes Mellitus on Sodium-Glucose Cotransporter 2 Inhibitor Therapy

In the current modern era of unhealthy lifestyles, non-alcoholic fatty liver disease (NAFLD) is the most prevalent liver disease and has become a serious global health problem. To date, there is no approved pharmacotherapy for the treatment of NAFLD, and necessary lifestyle changes such as weight loss, diet, and exercise are usually not sufficient to manage this disease. Patients with type 2 diabetes mellitus (T2DM) have a significantly higher risk of developing NAFLD and vice versa. Sodium-glucose cotransporter 2 (SGLT2) inhibitors are antidiabetic agents that have recently been approved for two other indications: chronic kidney disease and heart failure in diabetics and non-diabetics. They are also emerging as promising new agents for NAFLD treatment, as they have shown beneficial effects on hepatic inflammation, steatosis, and fibrosis. Studies in animals have reported favorable effects of SGLT2 inhibitors, and studies in patients also found positive effects on body mass index (BMI), insulin resistance, glucose levels, liver enzymes, apoptosis, and transcription factors. There are some theories regarding how SGLT2 inhibitors affect the liver, but the exact mechanism is not yet fully understood. Therefore, biomarkers to evaluate underlying mechanisms of action of SGLT2 inhibitors on the liver have now been scrutinized to assess their potential as a future in-label therapy for NAFLD. In addition, finding suitable non-invasive biomarkers could be helpful in clinical practice for the early detection of NAFLD in patients. This is crucial for a positive disease outcome. The aim of this review is to provide an overview of the most recent findings on the effects of SGLT2 inhibitors on NAFLD biomarkers and the potential of SGLT2 inhibitors to successfully treat NAFLD.

Impact of tofogliflozin on hepatic outcomes: a systematic review

PURPOSE

Studies have demonstrated a high prevalence of non-alcoholic fatty liver disease (NAFLD) in type 2 diabetes mellitus (T2DM) patients. The aim was to review the effect of tofogliflozin on hepatic outcomes in T2DM patients.

METHODS

A literature search in PubMed, Science Direct and Cochrane Central Register of Controlled Trials was conducted for randomised clinical trials of tofogliflozin by applying predetermined inclusion and exclusion criteria.

RESULTS

A total number of four randomised clinical trials, including 226 subjects, were included in the review. There was a significant decrease in aspartate aminotransferase (AST) and alanine transaminase (ALT) levels in the tofogliflozin group as compared to the control or active comparator groups. Additionally, gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP) and magnetic resonance imaging proton density fat fraction (MRI-PDFF) levels were also significantly decreased in the tofogliflozin group. However, no significant difference was observed in levels of adiponectin.

CONCLUSION

Overall, an improvement in levels of hepatic parameters was observed in T2DM patients with concurrent liver disorders. However, a large number of clinical trials are needed to prove the efficacy of tofogliflozin on hepatic outcomes in patients with T2DM.

Effect of Empagliflozin and Pioglitazone on left ventricular function in patients with type two diabetes and nonalcoholic fatty liver disease without established cardiovascular disease: a randomized single-blind clinical trial

BACKGROUND

Nonalcoholic fatty liver disease (NAFLD) is a complex metabolic disorder that increases the risk for cardiovascular disease in patients with type 2 diabetes mellitus (T2DM). Global longitudinal strain (GLS) is an indicator of left ventricular (LV) mechanics and can detect subclinical myocardial dysfunction. We compared the effects of pioglitazone and empagliflozin on GLS in patients with T2DM and NAFLD without established atherosclerotic cardiovascular disease.

METHODS

This study was a 24-week randomized, single-blind, and parallel-group (1: 1 ratio) clinical trial. Seventy-three participants with T2DM (being treated with metformin) and NAFLD but without established atherosclerotic cardiovascular disease (ASCVD) were randomized to empagliflozin or pioglitazone. Liver steatosis and fibrosis were measured using transient elastography, and GLS was measured by echocardiography. The primary endpoint was the change in GLS from baseline to week 24. Secondary end points include changes in controlled attenuation parameter (CAP) and Liver stiffness measure (LSM).

RESULTS

In this study, GLS improved by 1.56 ± 2.34% (P < 0.01) in the pioglitazone group and 1.06 ± 1.83% (P < 0.01) in the empagliflozin group without a significant difference between the two groups (P = 0.31). At baseline, GLS was inversely associated with the severity of liver fibrosis: r = - 0.311, P = 0.007. LSM in the pioglitazone and empagliflozin group [(-0.73 ± 1.59) and (-1.11 ± 1.33)] kpa (P < 0.01) decreased significantly. It was without substantial difference between the two groups (P = 0.26). Empagliflozin and pioglitazone both improved controlled attenuation parameter. The improvement was more critical in the empagliflozin group: -48.22 + 35.02 dB/m vs. -25.67 + 41.50 dB/m, P = 0.01.

CONCLUSION

Subclinical cardiac dysfunction is highly important in patients with T2DM and with NAFLD. Empagliflozin and Pioglitazone improve LV mechanics and fibrosis in patients without established ASCVD. This has a prognostic importance on cardiovascular outcomes in high-risk patients with T2DM. Moreover, empagliflozin ameliorates liver steatosis more effectively them pioglitazone. This study can serve as a start point hypothesis for the future. Further studies are needed to explore the concept in larger populations.

TRIAL REGISTRATION

This trial was registered in the Iranian Registry of Clinical Trials (IRCT): "A Comparison between the Effect of Empagliflozin and Pioglitazone on Echocardiographic Indices in Patients with Type 2 Diabetes Mellitus and Nonalcoholic Fatty Liver Disease" IRCT20190122042450N5, 29 November 2020. https://www.irct.ir/search/result?query=IRCT20190122042450N5 .

Factors related to the presence of nonalcoholic fatty liver disease in patients with type 2 diabetes: a single center study

Aim of the study

There is a close relationship between the development of diabetes and nonalcoholic fatty liver disease (NAFLD). The aim of the study was to determine the frequency and associated factors of NAFLD in type 2 diabetes mellitus (T2DM) patients according to the ultrasound examination and noninvasive hepatic fibrosis indices.

Material and methods

316 patients who were followed up in the Internal Medicine Diabetes clinic, over the age of 18, diagnosed with T2DM were included retrospectively. NAFLD was noted using ultrasound. NAFLD fibrosis score (NFS), fibrosis-4 index (FIB-4) and AST to platelet ratio index (APRI) were used as non-invasive hepatic fibrosis indices.

Results

The prevalence of NAFLD with hepatic ultrasound was 89.7% in T2DM patients. Among non-invasive fibrosis indices, NFS and FIB-4 were similar, but APRI was significantly higher in moderate-severe hepatosteatosis group (p values = 0.355, 0.246 and 0.003 respectively). In logistic regression analysis, while mild hepatosteatosis was associated with BMI and NFS (p = 0.004, p = 0.008), moderate to severe hepatosteatosis as associated with BMI and serum triglycerides (p < 0.001, p = 0.019).

Conclusions

The prevalence of NAFLD is high in patients with T2DM. The frequency and degree of NAFLD is associated with the NFS, BMI and hypertriglyceridemia. While NFS is associated with mild hepatosteatosis; moderate to severe hepatosteatosis is associated with BMI and serum triglycerides.

Efficacy of SGLT2 Inhibitors Versus Pioglitazone in the Treatment of Non-alcoholic Fatty Liver Disease or Non-alcoholic Steatohepatitis: A Systematic Review

Non-alcoholic fatty liver disease (NAFLD) is a complication related to obesity and metabolic syndrome. There are increased incidences of NAFLD/non-alcoholic steatohepatitis (NASH) due to rising obesity and type 2 diabetes mellitus (T2DM). This has resulted in significant morbidity and mortality. The two promising therapeutic agents for treating NAFLD/NASH are sodium-glucose cotransporter 2 (SGLT2) inhibitors and pioglitazone. The reason is their potential to target underlying pathophysiological mechanisms. SGLT2 inhibitors may help treat NAFLD/NASH by reducing insulin resistance and improving glucose control, thereby lowering hepatic fat accumulation and inflammation, although their exact mechanism in this context is still being studied. This systematic review aims to compare the efficacy of SGLT2 inhibitors and pioglitazone in treating NAFLD/NASH. Major research literature databases were searched, and appropriate keywords were used to find relevant articles published in the last three years. Eighteen studies were critically evaluated using standardized quality assessment tools. Among those, nine studies qualified as medium or high quality and were included in the review. Both SGLT2 inhibitors and pioglitazone showed promising results in improving NAFLD/NASH. The efficacy outcomes assessed liver fat content, liver enzyme levels, histological improvement, and metabolic parameters. The safety outcomes considered adverse events and cardiovascular events. The conducted review suggests that SGLT2 inhibitors and pioglitazone are potential treatment options for NAFLD/NASH. Having said that, individualized considerations are essential. It includes patient comorbidities, preferences, and overall safety profiles. Further research is needed to assess long-term effects and outcomes. It would provide more definitive evidence of these treatment options' comparative efficacy and safety for NAFLD/NASH.

Current Therapeutical Approaches Targeting Lipid Metabolism in NAFLD

Nonalcoholic fatty liver disease (NAFLD, including nonalcoholic fatty liver (NAFL) and nonalcoholic steatohepatitis (NASH)) is a high-prevalence disorder, affecting about 1 billion people, which can evolve to more severe conditions like cirrhosis or hepatocellular carcinoma. NAFLD is often concomitant with conditions of the metabolic syndrome, such as central obesity and insulin-resistance, but a specific drug able to revert NAFL and prevent its evolution towards NASH is still lacking. With the liver being a key organ in metabolic processes, the potential therapeutic strategies are many, and range from directly targeting the lipid metabolism to the prevention of tissue inflammation. However, side effects have been reported for the drugs tested up to now. In this review, different approaches to the treatment of NAFLD are presented, including newer therapies and ongoing clinical trials. Particular focus is placed on the reverse cholesterol transport system and on the agonists for nuclear factors like PPAR and FXR, but also drugs initially developed for other conditions such as incretins and thyromimetics along with validated natural compounds that have anti-inflammatory potential. This work provides an overview of the different therapeutic strategies currently being tested for NAFLD, other than, or along with, the recommendation of weight loss.

Vitamin E and Pioglitazone: A Comprehensive Systematic Review of Their Efficacy in Non-alcoholic Fatty Liver Disease

Non-alcoholic fatty liver disease (NAFLD) is becoming increasingly prevalent worldwide, especially in people with obesity, dyslipidemia, type 2 diabetes mellitus (T2DM), and metabolic syndrome. Weight loss and dietary modifications are established first-line treatments for NAFLD. Currently, there is no approved drug for NAFLD; however, pioglitazone and vitamin E have shown some beneficial effects. This systematic review covers the comparative efficacies of vitamin E, pioglitazone, and vitamin E plus pioglitazone. As of December 2022, the sources for prior literature review included PubMed, PubMed Central, and Medline. We included studies assessing the efficacy of pioglitazone, vitamin E, and vitamin E plus pioglitazone in improving liver histology, liver markers, and lipid profile when compared to other interventions in patients with NAFLD/non-alcoholic steatohepatitis (NASH). Review materials include randomized control trials (RCTs), traditional reviews, systematic reviews, meta-analyses, and observational studies on human participants published within the last five years in the English language. Studies on animals, pediatric populations, and with insufficient data were excluded from the review. Two authors scanned and filtered articles independently and later performed quality checks. A third reviewer resolved any conflicts. The risk of bias was assessed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines for systematic reviews, the Cochrane Risk of Bias Tool for RCTs, and the Scale for the Assessment of Narrative Review Articles for Traditional Reviews. A total of 21 articles were shortlisted. The results showed that pioglitazone and vitamin E are effective in reducing steatosis, inflammation, and ballooning, reducing liver markers, but there seem to be conflicting data on fibrosis resolution. Pioglitazone decreases triglycerides and increases high-density lipoproteins. One study has suggested that pioglitazone has superior efficacy to vitamin E in fibrosis reduction and vitamin E plus pioglitazone has superior efficacy than pioglitazone alone for NASH resolution. However, these conclusions require further validation through extensive analysis and additional research. In conclusion, diabetic patients with NAFLD can be given pioglitazone, and non-diabetic patients with NAFLD can be given vitamin E.

Effects of sodium-glucose co-transporter 2 inhibitors on liver fibrosis in non-alcoholic fatty liver disease patients with type 2 diabetes mellitus: An updated meta-analysis of randomized controlled trials

BACKGROUND AND AIM

Sodium-glucose co-transporter 2 inhibitors (SGLT2i) has been verified to improve Non-alcoholic fatty liver disease (NAFLD) in previous clinical practice. We mainly aim to investigate the effects of SGLT2i on liver fibrosis in NAFLD patients with type 2 diabetes mellitus (T2DM).

METHODS

We conducted a comprehensive literature search utilizing the databases PubMed, Embase, Web of Science, and Cochrane Library, and extracted continuous data in the form of mean and standard deviation of the difference before and after treatment. RevMan 5.3 software was used to chart the pooled forest plot and perform heterogeneity, sensitivity and subgroup analysis. This study is conducted under the protocol registered with the Platform of Registered Systematic Review and Meta-analysis Protocols (INPLASY protocol 4946, INPLASY202360058).

RESULTS

A total of 16 articles involving 699 patients were included. Indicators of liver fibrosis, containing Liver Stiffness Measurement (LSM), Controlled Attenuation Parameter (CAP), Serum ferritin, Serum type 4 collagen 7s, and FIB-4 index, were found to be considerably reduced by SGLT2i medication and subgroup analysis manifested pronounced dose-dependence. Additionally, SGLT2i therapy decreased BMI, lipid buildup and insulin resistance.

CONCLUSIONS

SGLT2 inhibitors significantly ameliorated liver fibrosis and liver fat content, improved body conditions and insulin resistance, demonstrating that SGLT2i might reduce the risk of the progression of liver fibrosis and have a positive effect on NAFLD patients with T2DM.

Nonalcoholic Fatty Liver Disease and Chronic Kidney Disease Cross Talk

Nonalcoholic fatty liver disease is a multisystem condition with effects beyond the liver. The identification of chronic kidney disease as an independent mediator of nonalcoholic fatty liver disease or associated entity with shared cardiometabolic risk factors remains controversial and continues to draw scientific interest. With increasing prevalence of nonalcoholic fatty liver disease and lack of Food and Drug Administration approved therapies, these shared cardiometabolic risk factors have drawn significant attention. In this article, we review shared pathophysiological mechanisms between nonalcoholic fatty liver disease and chronic kidney disease along with current treatment strategies that might be useful for both disease processes.

New anti-diabetic agents for the treatment of non-alcoholic fatty liver disease: a systematic review and network meta-analysis of randomized controlled trials

Objectives

This network meta-analysis aims to compare the efficacy and safety of new anti-diabetic medications for the treatment of non-alcoholic fatty liver disease (NAFLD).

Materials and methods

PubMed and Scopus were searched from inception to 27th March 2022 to identify all randomized controlled trials (RCTs) in NAFLD patients. Outcomes included reductions in intrahepatic steatosis (IHS) and liver enzyme levels. The efficacy and safety of DPP-4 inhibitors, GLP-1 agonists, SGLT-2 inhibitors, and other therapies were indirectly compared using a NMA approach. Unstandardized mean difference (USMD) with 95% confidence intervals (CI) were calculated.

Results

2,252 patients from 31 RCTs were included. "Add-on" GLP-1 agonists with standard of care (SoC) treatment showed significantly reduced IHS compared to SoC alone [USMD (95%CI) -3.93% (-6.54%, -1.33%)]. Surface under the cumulative ranking curve (SUCRA) identified GLP-1 receptor agonists with the highest probability to reduce IHS (SUCRA 88.5%), followed by DPP-4 inhibitors (SUCRA 69.6%) and pioglitazone (SUCRA 62.2%). "Add-on" GLP-1 receptor agonists were also the most effective treatment for reducing liver enzyme levels; AST [USMD of -5.04 (-8.46, -1.62)], ALT [USMD of -9.84 (-16.84, -2.85)] and GGT [USMD of -15.53 (-22.09, -8.97)] compared to SoC alone. However, GLP-1 agonists were most likely to be associated with an adverse event compared to other interventions.

Conclusion

GLP-1 agonists may represent the most promising anti-diabetic treatment to reduce hepatic steatosis and liver enzyme activity in T2DM and NAFLD patients. Nevertheless, longer-term studies are required to determine whether this delays progression of liver cirrhosis in patients with NAFLD and T2DM.

Systematic review registration

https://www.crd.york.ac.uk/prospero/, identifier CRD42021259336.1.

Exploring the Impact of Nutrition on Non-Alcoholic Fatty Liver Disease Management: Unveiling the Roles of Various Foods, Food Components, and Compounds

There is a need to introduce standardized treatment options for non-alcoholic fatty liver disease (NAFLD) due to its global prevalence and the complications of this disease. Many studies have revealed that food-derived substances may be beneficial in dealing with this disease. Therefore, this review aims to evaluate the recently published studies on the food-derived treatment options for NAFLD. A comprehensive search of the PubMed database using keywords such as "NAFLD", "nutrition", "food", "derived", "therapy", and "guidelines" yielded 219 relevant papers for our analysis, published from 2004 to 2023. The results show the significant benefits of food-derived treatment in NAFLD therapy, including improvements in liver histology, hepatic fat amounts, anthropometric measures, lipid profile, and other metabolic measures. The availability of the substances discussed makes them a significant adjuvant in the treatment of this disease. The usefulness of Viusid as additional therapy to diet and physical activity should be emphasized due to improvements in liver histology; however, many other substances lead to a decrease in liver fat amounts including, e.g., berberine or omega-3 fatty acids. In addition, the synbiotic Protexin seems to be useful in terms of NAFLD treatment, especially because it is effective in both obese and lean subjects. Based on the latest research results, we suggest revising the therapeutic recommendations for patients suffering from NAFLD.

The Effects of Sodium-Glucose Cotransporter 2-Inhibitors on Steatosis and Fibrosis in Patients with Non-Alcoholic Fatty Liver Disease or Steatohepatitis and Type 2 Diabetes: A Systematic Review of Randomized Controlled Trials

Type 2 Diabetes Mellitus (T2DM) and non-alcoholic fatty liver disease (NAFLD) are part of metabolic syndrome and share multiple causal associations. Both conditions have an alarmingly increasing incidence and lead to multiple complications, which have an impact on a variety of organs and systems, such as the kidneys, eyes, and nervous and cardiovascular systems, or may cause metabolic disruptions. Sodium-glucose cotransporter 2-inhibitors (SGLT2-i), as an antidiabetic class with well-established cardiovascular benefits, and its class members have also been studied for their presumed effects on steatosis and fibrosis improvement in patients with NAFLD or non-alcoholic steatohepatitis (NASH). The MEDLINE and Cochrane databases were searched for randomized controlled trials examining the efficacy of SGLT2-i on the treatment of NAFLD/NASH in patients with T2DM. Of the originally identified 179 articles, 21 articles were included for final data analysis. Dapagliflozin, empagliflozin, and canagliflozin are some of the most used and studied SGLT2-i agents which have proven efficacy in treating patients with NAFLD/NASH by addressing/targeting different pathophysiological targets/mechanisms: insulin sensitivity improvement, weight loss, especially visceral fat loss, glucotoxicity, and lipotoxicity improvement or even improvement of chronic inflammation. Despite the considerable variability in study duration, sample size, and diagnostic method, the SGLT2-i agents used resulted in improvements in non-invasive markers of steatosis or even fibrosis in patients with T2DM. This systematic review offers encouraging results that place the SGLT2-i class at the top of the therapeutic arsenal for patients diagnosed with T2DM and NAFLD/NASH.

Type 2 Diabetes Mellitus, Non-Alcoholic Fatty Liver Disease, and Metabolic Repercussions: The Vicious Cycle and Its Interplay with Inflammation

The prevalence of metabolic-related disorders, such as non-alcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (DM2), has been increasing. Therefore, developing improved methods for the prevention, treatment, and detection of these two conditions is also necessary. In this study, our primary focus was on examining the role of chronic inflammation as a potential link in the pathogenesis of these diseases and their interconnections. A comprehensive search of the PubMed database using keywords such as "non-alcoholic fatty liver disease", "type 2 diabetes mellitus", "chronic inflammation", "pathogenesis", and "progression" yielded 177 relevant papers for our analysis. The findings of our study revealed intricate relationships between the pathogenesis of NAFLD and DM2, emphasizing the crucial role of inflammatory processes. These connections involve various molecular functions, including altered signaling pathways, patterns of gene methylation, the expression of related peptides, and up- and downregulation of several genes. Our study is a foundational platform for future research into the intricate relationship between NAFLD and DM2, allowing for a better understanding of the underlying mechanisms and the potential for introducing new treatment standards.

How far are we from an approved drug for nonalcoholic steatohepatitis?

INTRODUCTION

Metabolic-associated fatty liver disease (MAFLD) previously known but still debatable, as nonalcoholic fatty liver disease (NAFLD) is one of the main causes of chronic liver disease and subsequent cirrhosis worldwide, accounting for around 30% of liver diseases. The change in its nomenclature has been brought about by the novel discoveries regarding its pathogenesis, in which metabolic dysfunction plays the most important role. It is widely known that for every disease, the treatment should always be targeted toward the underlying etiology and pathogenesis.

AREAS COVERED

MAFLD/NAFLD pathogenesis is heterogeneous, and includes multiple gene polymorphisms, presence of insulin resistance, as well as concomitant diseases that contribute to the disease onset and progression. As a result of this, even though lifestyle modification (owing to metabolic abnormalities) is the first line of treatment, multiple drugs have been tested to target each of the known pathways leading to MAFLD/NAFLD and progression of steatohepatitis. We aim to review the most relevant information regarding previous and ongoing research and recommendations regarding treatment of MAFLD/NAFLD.

EXPERT OPINION

Combination therapies associated to weight loss and exercise will be the optimal approach for these patients. It is important to evaluate each patient to select the specific combination according to patient characteristics.

Metabolic Syndrome and Its Association with Nonalcoholic Steatohepatitis

The relationship between insulin resistance, metabolic syndrome (MetS), and nonalcoholic fatty liver disease (NAFLD) is complicated. Although insulin resistance is almost universal in people with NAFLD and MetS, NAFLD may be present without features of MetS and vice versa. While NAFLD has a strong correlation with cardiometabolic risk factors, these are not intrinsic components of this condition. Taken together, our knowledge gaps call for caution regarding the common assertion that NAFLD is the hepatic manifestation of the MetS, and for defining NAFLD in broad terms as a "metabolic dysfunction" based on a diverse and poorly understood constellation of cardiometabolic features.

Comparison of Sodium-Glucose Cotransporter-2 Inhibitors and Thiazolidinediones for Management of Non-Alcoholic Fatty Liver Disease: A Systematic Review and Meta-Analysis

BACKGROUND

The pharmacologic treatment of non-alcoholic fatty liver disease (NAFLD) remains unclear.

METHODS

Two reviewers searched PubMed, SCOPUS, Cochrane Central and clinicaltrials.gov for randomized controlled trials (RCTs) of patients with NAFLD with or without type 2 diabetes mellitus (T2DM) receiving TZDs vs SGLT2 inhibitors. The primary outcomes were change in alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma-glutamyl transferase (GGT) and improvement in steatosis and fibrosis. The secondary outcomes were changes in lipid profile, body weight and glycated hemoglobin (HbA1c). Random effects models with continuous outcomes as weighted mean differences (WMD) with 95% confidence intervals (CI) were used.

RESULTS

Five studies (n= 311 NAFLD patients) were included. Patients treated with SGLT2 inhibitors (n= 156) showed significant decrease in visceral fat area (VFA; WMD 23.45, p<0.00001) and body weight (WMD 4.22, p<0.00001) as compared to those treated with TZDs (n= 155). Patients from both groups showed improvement in AST (WMD 1.21, p= 0.40), ALT (WMD -0.46, p= 0.81), GGT (WMD -0.47, p= 0.84), hepatic fibrosis (WMD 0.11, p= 0.52), LDL (WMD 2.19, p= 0.35), HbA1c (WMD -0.16%, p= 0.20), HOMA-IR (WMD: -0.04, p= 0.91) and FPG (WMD -7.37, p= 0.28) which was equivalent and non-significant.

CONCLUSION

The improvement in liver enzymes, steatosis and fibrosis caused by SGLT2 inhibitors and TZDs was similar. SGLT2 inhibitors, however, resulted in a significant decrease in VFA and body weight. As weight loss is found to have a positive effect on the resolution of steatosis and fibrosis in NAFLD patients, SGLT2 inhibitors may have the potential to be considered for long-term management, however, further research needs to be conducted to determine the utility of SGLT2 inhibitor class of antidiabetic drugs for effectively treating NAFLD.

Comparative efficacy of 5 sodium-glucose cotransporter protein-2 (SGLT-2) inhibitor and 4 glucagon-like peptide-1 (GLP-1) receptor agonist drugs in non-alcoholic fatty liver disease: A GRADE-assessed systematic review and network meta-analysis of randomized controlled trials

Background: The relative efficacy of 5 sodium-glucose cotransporter protein-2 (SGLT-2) inhibitors and 4 glucagon-like peptide-1 (GLP-1) receptor agonists for non-alcoholic fatty liver disease (NAFLD) therapy has not been sufficiently investigated. Methods: Randomized controlled trials (RCTs) in which patients with NAFLD were treated with SGLT-2 inhibitors or GLP-1 receptor agonists were included. Primary outcomes were improvements in liver enzymes and liver fat parameters, while secondary outcomes included anthropometric measures, blood lipids and glycemic parameters. The frequentist method was used to perform a network meta-analysis. Evidence certainty was assessed using the grading of recommendations assessment, development, and evaluation (GRADE). Results: The criteria were satisfied by 37 RCTs with 9 interventions (5 SGLT-2 inhibitors and 4 GLP-1 receptor agonists). Based on high certainty evidence, in patients with NAFLD (or comorbid with type 2 diabetes), semaglutide could lower alanine aminotransferase as well as aspartate aminotransferase, γ-glutamyl transferase, controlled attenuation parameter, liver stiffness measurement, body weight, systolic blood pressure, triglycerides, high-density lipoprotein-cholesterol, glycosylated hemoglobin. Liraglutide could lower alanine aminotransferase as well as subcutaneous adipose tissue, body mass index, fasting blood glucose, glycosylated hemoglobin, glucose and homeostasis model assessment, while dapagliflozin could lower alanine aminotransferase as well as body weight, fasting blood glucose, postprandial blood glucose, glycosylated hemoglobin, glucose and homeostasis model assessment. Conclusion: Semaglutide, liraglutide, and dapagliflozin all have a certain effect on NAFLD (or comorbid with type 2 diabetes) based on high confidence evidence from indirect comparisons, and semaglutide appears to have a therapeutic advantage over the other included medicines. Head-to-head studies are needed to provide more confidence in clinical decision-making.

What's New in the Treatment of Non-Alcoholic Fatty Liver Disease (NAFLD)

Non-alcoholic fatty liver disease (NAFLD) is a serious health problem due to its high incidence and consequences. In view of the existing controversies, new therapeutic options for NAFLD are still being sought. Therefore, the aim of our review was to evaluate the recently published studies on the treatment of NAFLD patients. We searched for articles in the PubMed database using appropriate terms, including "non-alcoholic fatty liver disease", "nonalcoholic fatty liver disease", "NAFLD", "diet", "treatment", "physical activity", "supplementation", "surgery", "overture" and "guidelines". One hundred forty-eight randomized clinical trials published from January 2020 to November 2022 were used for the final analysis. The results show significant benefits of NAFLD therapy associated with the use of not only the Mediterranean but also other types of diet (including low-calorie ketogenic, high-protein, anti-inflammatory and whole-grain diets), as well as enrichment with selected food products or supplements. Significant benefits in this group of patients are also associated with moderate aerobic physical training. The available therapeutic options indicate, above all, the usefulness of drugs related to weight reduction, as well as the reduction in insulin resistance or lipids level and drugs with anti-inflammatory or antioxidant properties. The usefulness of therapy with dulaglutide and the combination of tofogliflozin with pioglitazone should be emphasized. Based on the results of the latest research, the authors of this article suggest a revision of the therapeutic recommendations for NAFLD patients.

Recent updates on targeting the molecular mediators of NAFLD

Nonalcoholic fatty liver disease (NAFLD) is rapidly becoming the most common disease worldwide in an era of rapid economic growth. NAFLD is a multifactorial disease, involving multiple genetic, metabolic, and environmental factors, and is closely associated with metabolic syndrome, obesity, and cardiovascular disease. NAFLD can be classified into nonalcoholic fatty liver disease (NAFL) and nonalcoholic steatohepatitis (NASH), which can both progress to cirrhosis and even hepatocellular carcinoma (HCC). Due to the enormous burden of NAFLD and its complications, no FDA-approved drugs for the treatment of NAFLD are on the market, and therapeutic targets and drug therapies are being actively investigated. In view of the various pathological mechanisms of NAFLD, numbers of preclinical studies and clinical trials have made rapid progress. This review mainly summarizes the most recently characterized mechanisms and therapeutic targets in each mechanism of NAFLD, focusing on the mechanism and application potential.

Comparative efficacy of diabetes medications on liver enzymes and fat fraction in patients with nonalcoholic fatty liver disease: A network meta-analysis,

OBJECTIVES

This network meta-analysis (NMA) aimed to evaluate the relative rank-order of existing diabetes medications in patients with nonalcoholic fatty liver disease (NAFLD) with or without type 2 diabetes mellitus (T2DM).

METHODS

A systematic literature search was conducted using the Medline, Embase and Cochrane databases. Clinical trials comparing the efficacy of diabetes medications with other interventions, including lifestyle modification and placebo, in patients with NAFLD were included. The results from the NMA are presented as the weighted mean difference (WMD) of the continuous results and the corresponding 95% confidence intervals (95% CIs).

RESULTS

The articles presented the results of 49 trials involving 3,836 subjects published between 2013 and 2021. According to our results, thiazolidinedione (TZD) was ranked as the best diabetes medication in the reduction of alanine aminotransferase (ALT) (WMD = -10.10, 95% CI: -15.18, -5.01), followed by dipeptidyl peptidase-4 inhibitor (DPP4i) (WMD = -8.90, 95% CI: -14.41, -3.40). DPP4i also resulted in the greatest reduction in aspartate aminotransferase (AST) (WMD = -6.89, 95% CI: -11.72, -2.07). γ-Glutamyl transferase (γ-GT) reduction was highest in patients treated with glucagon-like peptide 1 receptor agonists (GLP1RAs) (WMD = -15.48, 95% CI: -30.93, -0.02). Ultimately, SGLT2is and GLP1RAs were superior to other diabetes medications or placebo in reducing liver fat fraction (LFF) (WMD = -6.09, 95% CI: -10.50, -1.68; WMD = -5.55, 95% CI: -10.40, -0.69, respectively).

CONCLUSION

Diabetes medications, including TZD, DPP4i and GLP1RAs, were found to be suitable alternatives for liver enzyme reduction in the treatment of NAFLD patients. SGLT2is are considered the most effective therapies for lipid modulation in these patients.

Pharmacotherapy for Non-alcoholic Fatty Liver Disease Associated with Diabetes Mellitus Type 2

Non-alcoholic fatty liver disease (NAFLD) and diabetes mellitus type 2 commonly coexist as a manifestation of metabolic syndrome. The presence of diabetes promotes the progression of simple fatty liver to non-alcoholic steatohepatitis (NASH) and cirrhosis, and the presence of NAFLD increases the risk of diabetic complications. This coexistence affects a large part of the population, imposing a great burden on health care systems worldwide. Apart from diet modification and exercise, recent advances in the pharmacotherapy of diabetes offer new prospects regarding liver steatosis and steatohepatitis improvement, enriching the existing algorithm and supporting a multifaceted approach to diabetic patients with fatty liver disease. These agents mainly include members of the families of glucagon-like peptide-1 analogues and the sodium-glucose co-transporter-2 inhibitors. In addition, agents acting on more than one receptor simultaneously are presently under study, in an attempt to further enhance our available options.