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Metabolism of endogenous and exogenous estrogens in women.
J Steroid Biochem Mol Biol
September 2024
Department of Obstetrics and Gynecology, University of Southern California Keck School of Medicine, Los Angeles, CA, USA. Electronic address:
Estrogens regulate important processes in reproductive, skeletal, cardiovascular, and central nervous systems that impact women's overall health. Understanding endogenous and exogenously administered estrogen metabolism is vital to determining therapeutic estrogen levels. The present review provides an overview of estrogen metabolites formed in non-pregnant and pregnant women, and those resulting from exogenous estrogen administration.
View Article and Find Full Text PDFIncreased risk of nephrolithiasis: an emerging issue in children with congenital adrenal hyperplasia due to 21-hydroxylase deficiency.
Endocrine
May 2024
Pediatric Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari "A. Moro", Bari, Italy.
Purpose: To investigate the incidence of nephrolithiasis in a cohort of children with congenital adrenal hyperplasia (CAH), and to study if there is an association with the metabolic control of the disease.
Methods: This study was designed as a multicenter 1 year-prospective study involving 52 subjects (35 males) with confirmed molecular diagnosis of CAH due to 21-hydroxylase deficiency (21-OHD). Each patient was evaluated at three different time-points: T0, T1 (+6 months of follow-up), T2 (+12 months of follow up).
Degradation kinetics of veterinary antibiotics and estrogenic hormones in a claypan soil.
Chemosphere
January 2024
U.S. Geological Survey, Columbia Environmental Research Center, 4200 E New Haven Rd., Columbia, MO, 65201, USA.
Veterinary antibiotics and estrogens are excreted in livestock waste before being applied to agricultural lands as fertilizer, resulting in contamination of soil and adjacent waterways. The objectives of this study were to 1) investigate the degradation kinetics of the VAs sulfamethazine and lincomycin and the estrogens estrone and 17β-estradiol in soil mesocosms, and 2) assess the effect of the phytochemical DIBOA-Glu, secreted in eastern gamagrass (Tripsacum dactyloides) roots, on antibiotic degradation due to the ability of DIBOA-Glu to facilitate hydrolysis of atrazine in solution assays. Mesocosm soil was a silt loam representing a typical claypan soil in portions of Missouri and the Central United States.
View Article and Find Full Text PDFThe effect of tea catechins on the forensic identification of urine: Urine camouflage to evade drug tests.
Leg Med (Tokyo)
February 2024
Department of Forensic Medicine, Faculty of Medicine, Fukuoka University, Japan. Electronic address:
Background: We encountered a urine sample suspected of being mixed with tea, submitted by a suspect attempting to camouflage illegal drugs. Although urine should turn reddish-pink during a urea test with p-Dimethylaminocinnamaldehyde (DAC), this suspect's sample exhibited a blue coloration when tested with DAC.
Aim: Our aim was to examine the influence and mechanism of green tea on various urine identification tests.
Delineating endogenous Cushing's syndrome by GC-MS urinary steroid metabotyping.
EBioMedicine
January 2024
Division of Pediatric Endocrinology & Diabetology, Laboratory for Translational Hormone Analysis in Pediatric Endocrinology, Steroid Research & Mass Spectrometry Unit, Center of Child and Adolescent Medicine, Justus-Liebig-University, Feulgenstr. 10-12, Giessen 35392, Germany. Electronic address:
Background: Diagnosing Cushing's syndrome (CS) is highly complex. As the diagnostic potential of urinary steroid metabolome analysis by gas chromatography-mass spectrometry (GC-MS) in combination with systems biology has not yet been fully exploited, we studied a large cohort of patients with CS.
Methods: We quantified daily urinary excretion rates of 36 steroid hormone metabolites.
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