Obesity has become a global epidemic affecting diverse populations and leading to metabolic syndrome across different sexes and age groups. A significant aspect of obesity is the development of leptin resistance, primarily due to the inefficient transport of leptin across the blood-brain barrier and other mechanisms such as protein folding and dysregulation of leptin signaling in brain areas related to energy and adipose tissue metabolism. This hindrance in leptin delivery poses a challenge to using this adipokine as a potential therapy for obesity. Current research focuses on understanding the complex molecular pathways that link diet-induced obesity, characterized by increased levels of leptin, to the onset of metabolic syndrome. This syndrome encompasses various health issues, including type 2 diabetes mellitus, and involves intricate mechanisms primarily affecting pancreatic β-cells. This bioinformatics-assisted review describes key biological elements of known pathways, such as the forkhead box protein O1/leptin receptor and Janus kinase/signal transducer and activator of transcription 3, and discusses future directions that might contribute to understanding the relationship between obesity, leptin resistance, and metabolic complications (e.g., Rac1/cell division control protein 42 homolog), paving the way for future research on targeted therapeutic interventions.

Age-related mosaic chromosomal alterations (mCAs) detected from genotyping of blood-derived DNA are structural somatic variants that indicate clonal hematopoiesis. This study aimed to investigate whether mCAs contribute to the risk of cirrhosis and modify the effect of a polygenic risk score (PRS) on cirrhosis risk prediction.

mCA call sets of individuals with European ancestry were obtained from the UK Biobank. The PRS was constructed based on 12 susceptible single-nucleotide polymorphisms for cirrhosis. Cox proportional hazard models were applied to evaluate the associations between mCAs and cirrhosis risk.

Among 448,645 individuals with a median follow-up of 12.5 years, we identified 2,681 cases of cirrhosis, 1,775 cases of compensated cirrhosis, and 1,706 cases of decompensated cirrhosis. Compared to non-carriers, individuals with copy-neutral loss of heterozygosity mCAs had a significantly increased risk of cirrhosis (hazard ratio (HR) 1.42, 95% confidence interval (CI) 1.12–1.81). This risk was higher in patients with expanded cell fractions of mCAs (cell fractions ≥10% vs. cell fractions <10%), especially for the risk of decompensated cirrhosis (HR 2.03 [95% CI 1.09–3.78] vs. 1.14 [0.80–1.64]). In comparison to non-carriers of mCAs with low genetic risk, individuals with expanded copy-neutral loss of heterozygosity and high genetic risk showed the highest cirrhosis risk (HR 5.39 [95% CI 2.41–12.07]).

The presence of mCAs is associated with increased susceptibility to cirrhosis risk and could be combined with PRS for personalized cirrhosis risk stratification.

Autoimmune hepatitis (AIH) is a chronic, progressive inflammatory liver disease caused by autoimmune reactions, with an unknown etiology. If left untreated, it can progress to cirrhosis, liver failure, or even death. While most patients respond well to first-line treatments, a significant number experience poor responses or intolerance, requiring the use of second- or third-line therapies. Ongoing research into the pathogenesis of AIH is leading to the development of novel therapeutic approaches. This review summarized recent advancements in the treatment of AIH both domestically and internationally.

This review discussed experimental mouse models used in the pre-clinical study of liver fibrosis regression, a pivotal process in preventing the progression of metabolic dysfunction-associated steatohepatitis to irreversible liver cirrhosis. These models provide a valuable resource for understanding the cellular and molecular processes underlying fibrosis regression in different contexts. The primary focus of this review is on the most commonly used models with diet- or hepatotoxin-induced fibrosis, but it also touches upon genetic models and mouse models with biliary atresia or parasite-induced fibrosis. In addition to emphasizing in vivo models, we briefly summarized current in vitro approaches designed for studying fibrosis regression and provided an outlook on evolving methodologies that aim to refine and reduce the number of experimental animals needed for these studies. Together, these models contribute significantly to unraveling the underlying mechanisms of liver fibrosis regression and offer insights into potential therapeutic interventions. By presenting a comprehensive overview of these models and highlighting their respective advantages and limitations, this review serves as a roadmap for future research.

Liver injury in Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) is a multifaceted disorder, lacking cohort homogeneity due to a variety of potential causes, including drugs, arsenic and other heavy metals, glyphosate, infections, and ultraviolet radiation. The goals of this review were (1) to analyze the role of diagnostic algorithms in assessing causality for potential culprits involved in the development of liver injury associated with immune-mediated SJS and TEN, which represent immune-based variant disorders within a continuous spectrum. Milder forms are classified as SJS or SJS/TEN overlap, while TEN is known as the most serious form; and (2) to interpret the findings that allow for the characterization of the different types of these disorders. The manuscript is based on an extensive literature search for single case reports, case cohorts, and review articles. Search terms included: Stevens-Johnson Syndrome, Toxic Epidermal Necrolysis, and specific diagnostic algorithms such as the Roussel Uclaf Causality Assessment Method (RUCAM) and the Algorithm of Drug Causality for Epidermal Necrolysis (ALDEN). For the purpose of basic feature description, the uniform term SJS/TEN is used in the current analysis. SJS/TEN presents with five different cohort types: SJS/TEN type (1), which refers to a cohort of SJS/TEN caused by drugs, as assessed by both ALDEN and RUCAM; type (2), representing SJS/TEN due to drugs and assessed by ALDEN only, but not by RUCAM; type (3), which includes a cohort of SJS/TEN caused by drugs, assessed by non-ALDEN and non-RUCAM tools; type (4), which focuses on a cohort of SJS/TEN caused by non-drug culprits, assessed by various tools; and type (5), which considers a cohort of SJS/TEN caused by unknown culprits. Using this new SJS/TEN typology will help better characterize individual features, personalize treatment, and clarify pathogenetic specifics for each of the five disease types. This new SJS/TEN typology provides clarity by replacing issues of inhomogeneity with cohort homogeneity.

Essential oils, known for their pleasant aromas, not only calm the mind and elevate the mood but also captivate the interest of researchers aiming to unveil their vast potential. Various methodologies are employed to explore the diverse capabilities of essential oils, often yielding promising and significant outcomes. This review aims to elucidate the molecular mechanisms of essential oils at the cellular level. It identifies multiple mechanisms through which essential oils exhibit their therapeutic effects across various systems. However, a comprehensive understanding of their fundamental mechanisms still necessitates extensive research. In this review, we discuss the mechanisms underlying the biological activities of essential oils, specifically their antioxidant, antimicrobial, anticarcinogenic, anti-diabetic, and anti-inflammatory properties.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is currently a pressing public health issue associated with adverse outcomes such as cirrhosis, malignancy, transplantation, and mortality. Lifestyle modifications constitute the most effective and fundamental management approach, but they often pose challenges in sustaining long-term clinical benefits. Hence, there is a critical need to enhance our understanding through pharmacological management, which unfortunately remains limited. Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have emerged as a leading treatment in the fields of diabetes and obesity, with recent preclinical and clinical studies indicating significant benefits in the management and treatment of MASLD. Our article begins by reviewing the beneficial therapeutic components of GLP-1RAs in MASLD. Subsequently, from a clinical research perspective, we concluded with the liver outcomes of current primary GLP-1RAs and co-agonists. Finally, we presented our insights on clinical concerns such as appropriate trial endpoints, management of comorbidities, and future developments. In conclusion, the benefits of GLP-1RAs in MASLD are promising, and background therapy involving metabolic modulation may represent one of the future therapeutic paradigms.

Ketamine, a non-competitive N-methyl-D-aspartate receptor antagonist, has emerged as an effective therapeutic agent for the management of treatment-resistant depression. Repeated treatments with ketamine show rapid, robust, and sustained antidepressant effects. Despite the large body of evidence, key concerns include adverse effects such as dissociative symptoms, hemodynamic instability, and the risk of abuse with long-term ketamine therapy. This narrative review provides an overview of the neurobiological mechanisms underlying ketamine’s antidepressant effects, its basic pharmacodynamics, and its safety profile. The clinical evidence regarding ketamine’s efficacy in depression is also summarized, and the need for further research on the long-term effects of ketamine therapy, the development of agents with similar antidepressant effects but fewer adverse effects or potential for abuse, and the identification of biomarkers to predict the response to ketamine is highlighted.

Gastric cancer is the third most common cause of cancer-related death globally. The highest incidence is encountered in Asia, followed by Europe which has the second highest incidence worldwide. In Europe, gastric cancer is typically diagnosed at an advanced stage, with an estimated five-year survival rate of 24%, compared to 59% in Japan. This disparity is largely attributed to the significant role of screening in Japan. Given the expected rise in absolute numbers of gastric cancer cases, there has been a demand for gastric cancer screening programmes in high-intermediate risk countries, advocated by the International Agency for Research on Cancer, the Science Advice for Policy by European Academies, the European Commission as part of the Europe Beating Cancer Plan, and the Maastricht VI/Florence consensus guidelines. This review article summarizes the current disparities in screening strategies between countries in the East and West and comments on future developments in population-based screening research in this field. The references for this article were identified through PubMed, the Cochrane Database of Systematic Reviews, and the Cochrane Controlled Register of Trials using the search terms “gastric cancer”, “stomach cancer”, “Helicobacter pylori”, and “screening” over the period from 1995 until March 2024. Overall, this review identifies three potential approaches to screening: primary, secondary, and opportunistic. It highlights the lack of a uniform consensus on the best approach to screening, the disparity in the information available in different populations, and upcoming research to address this disparity.