Evidence That Peripheral Leptin Resistance in Omental Adipose Tissue and Liver Correlates with MASLD in Humans.

Leptin regulates lipid metabolism, maximizing insulin sensitivity; however, peripheral leptin resistance is not fully understood, and its contribution to metabolic dysfunction-associated steatotic liver disease (MASLD) is unclear. This study evaluated the contribution of the leptin axis to MASLD in humans. Forty-three participants, mostly female (86.

Expression of the receptor of advanced glycation end-products (RAGE) and membranal location in peripheral blood mononuclear cells (PBMC) in obesity and insulin resistance.

Objectives: The present study aimed to evaluate the receptor of advanced glycation end-products (RAGE), NF-kB, NRF2 gene expression, and RAGE cell distribution in peripheral blood mononuclear cells (PBMC) in subjects with obesity and IR compared with healthy subjects.

Materials And Methods: The mRNA expression levels of RAGE, NF-kB, NRF2, and GAPDH were determined in PBMC by qPCR in 20 obese (OB), 17 obese with insulin resistance (OB-IR), and 20 healthy subjects (HS), matched by age and sex. RAGE protein expression and its localization were determined by Western Blot and immunocytochemistry (ICC) analysis, total soluble RAGE (sRAGE) and MCP-1 plasma levels by ELISA.

Development of an effective and rapid qPCR for identifying human ChREBPα/β isoforms in hepatic and adipose tissues.

Most quantitative real-time PCR (qPCR) detection methods use two types of chemistries to measure the expression levels of ChREBP isoforms, hydrolysis probes for ChREBPα and SYBR Green for ChREBPβ. Hydrolysis probes are not available to determine the ChREBPβ isoform. The aim of this study was to develop a qPCR assay based only on hydrolysis probes for both ChREBP isoforms.