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Petals Ameliorate Depressive-like Symptom and Cognitive Deficit in Unpredictable Chronic Mild Stress Mouse Model.
Nutrients
December 2024
Division of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand.
Chronic stress exposure has been widely recognized as a significant contributor to numerous central nervous system (CNS) disorders, leading to debilitating behavioral changes such as anxiety, depression, and cognitive impairments. The prolonged activation of the hypothalamic-pituitary-adrenal (HPA) axis during chronic stress disrupts the neuroendocrine balance and has detrimental effects on neuronal function and survival. () Gaertn.
View Article and Find Full Text PDFThirty years of StAR gazing: expanding the universe of the steroidogenic acute regulatory protein.
J Endocrinol
January 2025
W L Miller, Department of Pediatrics, Center for Reproductive Sciences, and Institute for Human Genetics University of California, San Francisco, United Kingdom of Great Britain and Northern Ireland.
Current understanding of the biology, biochemistry and genetics of the steroidogenic acute regulatory protein (StAR) and its deficiency state (congenital lipoid adrenal hyperplasia, lipoid CAH) involves the complex interplay of four areas of study: the acute regulation of steroidogenesis, clinical phenomena in lipoid CAH, the enzymatic conversion of cholesterol to pregnenolone in steroidogenic mitochondria, and the cell biology of StAR. This review traces the origins of these areas of study, describes how they have been woven into an increasingly coherent fabric, and tries to explore some remaining loose ends in this ongoing field of endocrine research. Abundant research from multiple laboratories establishes that StAR is required for the rapid, abundant steroidal responses of the adrenals and gonads, but all steroidogenic cells, especially the placenta, have StAR-independent steroidogenesis, whose basis remains under investigation.
View Article and Find Full Text PDFEnhanced expression of Cyp17a1 and production of DHEA-S in the liver of late-pregnant rats.
Gen Comp Endocrinol
January 2025
Laboratory of Veterinary Biochemistry, Department of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan.
Cytochrome P450 17A1 (CYP17A1) catalyzes two enzymatic reactions in the biosynthesis of dehydroepiandrosterone (DHEA) from pregnenolone. In pregnant humans, the adrenal gland is responsible for DHEA biosynthesis, which is then sulfated by SULT2A1 and released into the bloodstream. This sulfated DHEA is subsequently taken up by the placenta and deconjugated to serve as a precursor for estrogen biosynthesis.
View Article and Find Full Text PDFAn untargeted metabolomics approach to evaluate enzymatically deconjugated steroids and intact steroid conjugates in urine as diagnostic biomarkers for adrenal tumors.
Clin Chem Lab Med
January 2025
Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
Objectives: Urinary steroid profiling after hydrolysis of conjugates is an emerging tool to differentiate aggressive adrenocortical carcinomas (ACC) from benign adrenocortical adenomas (ACA). However, the shortcomings of deconjugation are the lack of standardized and fully validated hydrolysis protocols and the loss of information about the originally conjugated form of the steroids. This study aimed to evaluate the quality of the deconjugation process and investigate novel diagnostic biomarkers in urine without enzymatic hydrolysis.
View Article and Find Full Text PDFCortisol quantification in human plasma and urine by liquid chromatography coupled to mass spectrometry: Validation, analysis and application in a reference population and patients with adrenal incidentalomas.
Clin Chim Acta
January 2025
Federal University of Rio de Janeiro - UFRJ, Brazilian Doping Control Laboratory - LBCD, LADETEC, Av. Horácio Macedo, 1281 - Polo de Química - Bloco C - Cidade Universitária - Ιlha do Fundão, Rio de Janeiro, Brazil.
Article Synopsis
- Cortisol is a crucial hormone involved in various bodily processes, but traditional immunoassays can inaccurately measure it due to low specificity.
- The study developed and validated advanced LC-MS/MS methods for accurately measuring cortisol in urine and plasma samples, adhering to Brazilian health regulations.
- Their methods demonstrated high precision and sensitivity, successfully analyzing samples from patients at a major hospital in Rio de Janeiro.
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