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Impact of sex hormones on pheochromocytomas, paragangliomas, and gastroenteropancreatic neuroendocrine tumors.
Eur J Endocrinol
January 2025
Department of Internal Medicine IV, LMU University Hospital, LMU Munich, 80336 Munich, Germany.
Objective: The effects of sex hormones remain largely unexplored in pheochromocytomas and paragangliomas (PPGLs) and gastroenteropancreatic neuroendocrine tumors (GEP-NETs).
Methods: We evaluated the effects of estradiol, progesterone, Dehydroepiandrosterone sulfate (DHEAS), and testosterone on human patient-derived PPGL/GEP-NET primary culture cell viability (n = 38/n = 12), performed next-generation sequencing and immunohistochemical hormone receptor analysis in patient-derived PPGL tumor tissues (n = 36).
Results: In PPGLs, estradiol and progesterone (1 µm) demonstrated overall significant antitumor effects with the strongest efficacy in PPGLs with NF1 (cluster 2) pathogenic variants.
RETHINKING LOW TESTOSTERONE IN OLDER MEN: ASSOCIATION WITH OBESITY RATHER THAN AGING.
Urology
January 2025
State University of Feira de Santana, Bahia, Brazil; Federal University of Ceará, Fortaleza, Ceará. Electronic address:
Background: The decline in testosterone levels among older men remains a subject of debate. While some cross-sectional and longitudinal studies have reported a decrease in testosterone with advancing age, others have not observed this trend. In this study, we aimed to evaluate testosterone levels and identify predictors of low testosterone in an age-stratified cohort of men.
View Article and Find Full Text PDFSarcopenia in MASLD-Eat to Beat Steatosis, Move to Prove Strength.
Nutrients
January 2025
Faculty of Medicine, "Iuliu Hatieganu" University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania.
The connections between sarcopenia and various chronic conditions, including type 2 diabetes (T2DM), metabolic syndrome (MetS), and liver disease have been highlighted recently. There is also a high occurrence of sarcopenia in metabolic dysfunction-associated steatotic liver disease (MASLD) patients, who are often disregarded. Both experimental and clinical findings suggest a complex, bidirectional relationship between MASLD and sarcopenia.
View Article and Find Full Text PDFRoot Extract for Men with Lower Urinary Tract Symptoms: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Trial.
Nutrients
December 2024
Department of Urology, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.
The prevalence of urological diseases increases with age, and lower urinary tract symptoms (LUTSs) are the most common problem. Natural compounds with minimal side effects for the improvement in LUTSs are of ongoing interest. extract (SAGX) has shown potential in preclinical studies for its effects on LUTSs.
View Article and Find Full Text PDFRecipient sex and donor leukemic cell characteristics determine leukemogenesis in patient-derived models.
Haematologica
January 2025
University Clinic Tübingen, Department for Internal Medicine II, University of Tübingen, Tübingen, Germany; German Cancer Consortium (DKTK), partner site Tübingen, a partnership between DKFZ and University Hospital Tübingen.
In acute myeloid leukemia (AML), leukemogenesis depends on cell-intrinsic genetic aberrations and thus, studies on AML require investigations in an in vivo setting as provided by patient derived xenografts (PDX) models. Here we report that, next to leukemic cell characteristics, recipient sex highly influences the outgrowth of AML cells in PDX models, with females being much better repopulated than males in primary as well as secondary transplantation assays. Testosterone may be the more important player since, strikingly, better engraftment was seen in castrated versus control male recipients, while ovariectomy did not significantly impair engraftment in females.
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