Weight Loss After Sleeve Gastrectomy According to Metabolic Dysfunction-Associated Steatotic Liver Disease Stage in Patients with Obesity: A Liver Biopsy-Based Prospective Study.

Background: The role of metabolic dysfunction-associated steatotic liver disease (MASLD) in sleeve gastrectomy (SG)-related outcomes remains uncertain. In this study, we aimed to assess the influence of preoperative biopsy-proven MASLD and its stages on weight loss after SG.

Methods: One hundred sixty-three patients with obesity undergoing SG with concomitant intraoperative liver biopsy were followed up for 1 year.

Corrigendum: Increased neutrophil counts are associated with poor overall survival in patients with colorectal cancer: a five-year retrospective analysis.

[This corrects the article DOI: 10.3389/fimmu.2024.

Increased neutrophil counts are associated with poor overall survival in patients with colorectal cancer: a five-year retrospective analysis.

Background: Colorectal cancer (CRC) continues to be a major health concern in today's world. Despite conflictive findings, evidence supports systemic inflammation's impact on CRC patients' survival rates. Therefore, this study aims to assess the prognostic role of the innate immune system in patients with CRC.

RNA expression changes driven by altered epigenetics status related to NASH etiology.

Non-alcoholic fatty liver disease (NAFLD) is a growing health problem due to the increased obesity rates, among other factors. In its more severe stage (NASH), inflammation, hepatocellular ballooning and fibrosis are present in the liver, which can further evolve to total liver dysfunction or even hepatocarcinoma. As a metabolic disease, is associated to environmental factors such as diet and lifestyle conditions, which in turn can influence the epigenetic landscape of the cells, affecting to the gene expression profile and chromatin organization.

Non-alcoholic fatty liver disease in patients with morbid obesity: the gut microbiota axis as a potential pathophysiology mechanism.

Background/aim: Alterations in gut microbiota are associated with the pathogenesis of metabolic diseases, including metabolic-associated fatty liver disease (MAFLD). The aim of this study was to evaluate gut microbiota composition and functionality in patients with morbid obesity with different degrees of MAFLD, as assessed by biopsy.

Subjects/methods: 110 patients with morbid obesity were evaluated by biopsy obtained during bariatric surgery for MAFLD.

Microbiome Alterations and Alzheimer's Disease: Modeling Strategies with Transgenic Mice.

In the last decade, the role of the microbiota-gut-brain axis has been gaining momentum in the context of many neurodegenerative and metabolic disorders, including Alzheimer's disease (AD) and diabetes, respectively. Notably, a balanced gut microbiota contributes to the epithelial intestinal barrier maintenance, modulates the host immune system, and releases neurotransmitters and/or neuroprotective short-chain fatty acids. However, dysbiosis may provoke immune dysregulation, impacting neuroinflammation through peripheral-central immune communication.

8-Oxoguanine DNA Glycosylase 1 Upregulation as a Risk Factor for Obesity and Colorectal Cancer.

DNA damage has been extensively studied as a potentially helpful tool in assessing and preventing cancer, having been widely associated with the deregulation of DNA damage repair (DDR) genes and with an increased risk of cancer. Adipose tissue and tumoral cells engage in a reciprocal interaction to establish an inflammatory microenvironment that enhances cancer growth by modifying epigenetic and gene expression patterns. Here, we hypothesize that 8-oxoguanine DNA glycosylase 1 (OGG1)-a DNA repair enzyme-may represent an attractive target that connects colorectal cancer (CRC) and obesity.

Differential iNKT and T Cells Activation in Non-Alcoholic Fatty Liver Disease and Drug-Induced Liver Injury.

Background: Non-alcoholic fatty liver disease (NAFLD) and idiosyncratic drug-induced liver injury (DILI) could share molecular mechanisms involving the immune system. We aimed to identify activation immunological biomarkers in invariant natural killer T (iNKT) and CD4/CD8+ T cells in NAFLD and DILI.

Methods: We analyzed the activation profile (CD69, CD25, and HLA-DR) and natural killer group 2 member D (NKG2D) on iNKT cells, and CD4/CD8 T cells in peripheral blood mononuclear cells from NAFLD, with or without significant liver fibrosis, and DILI patients.

DNA methylome in visceral adipose tissue can discriminate patients with and without colorectal cancer.

Adipose tissue dysfunction, particularly the visceral (VAT) compartment, has been proposed to play a relevant role in colorectal cancer (CRC) development and progression. Epigenetic mechanisms could be involved in this association. The current study aimed to evaluate if specific epigenetic marks in VAT are associated with colorectal cancer (CRC) to identify epigenetic hallmarks of adipose tissue-related CRC.

An Epigenetic Signature is Associated with Serum 25-Hydroxyvitamin D in Colorectal Cancer Tumors.

Introduction: Vitamin D has been widely associated with colorectal cancer (CRC) through different insights. This study aims to explore the association between serum 25-hydroxyvitamin D (25(OH)D) and the global DNA methylation in tumor from CRC patients.

Methods And Results: A genome-wide DNA methylation analysis is conducted in 20 CRC patients under categorical (10 patients have 25(OH)D <30 ng mL ; 10 patients with 25(OH)D ≥30 ng mL ) and continuous models of 25(OH)D.

Her2-Positive and Microsatellite Instability Status in Gastric Cancer-Clinicopathological Implications.

Gastric cancer (GC) is one of the leading causes of cancer-related death. The combination of new molecular classifications with clinicopathological data could contribute to the individualization of patients and to the development of new therapeutic strategies. We examined the various associations in two molecular types of GC: HER2-positive (human epidermal growth factor receptor 2) and microsatellite instability (MSI), assessing their influence on treatment and prognosis.

Impact of Tumor Methylation Level and Neoadjuvant Treatment and Its Association with Colorectal Cancer Survival.

Recent studies suggest that long-interspersed nucleotide element-1 () hypomethylation is commonly found in colorectal cancer (CRC), and is associated with worse prognosis. However, the utility of methylation on the prognosis of CRC is still controversial, and may be due to the fact that some clinical and pathological features may affect methylation. Thus, the aim of this study was to assess the prognostic value of tumor methylation in CRC, through their association with the CRC clinical and pathological characteristics.

[Liposarcoma of the perirenal cell].

Objectives: To show the imaging tests characteristics and differential diagnosis of masses located within the retroperitoneal perirenal area.

Methods: Diagnostic imaging tests (KUB x-ray, ultrasound, helical CT scan with IV contrast) and follow-up in one case of perirenal cell liposarcoma.

Results: The study of the surgical specimen after renal tumorectomy in a patient with a solitary kidney resulted in the present diagnosis.

p53 alterations in porokeratosis.

Background: Porokeratosis (PK) is a group of cutaneous entities characterized by disordered epidermal keratinization and by a predisposition to develop malignant transformation. The molecular mechanism of this carcinogenesis remains unclear, but p53 has been proposed as a mediator of this process. p53 overexpression, detected by immunohistochemistry, has frequently been reported in PK, and p53 mutations are direct results of ultraviolet (UV) skin exposure and are directly involved in most common skin cancers.