The Effect of Soy Isoflavones on Steroid Metabolism

This study is a post-hoc analysis of steroid hormones before and after administration of pharmacological doses of soy isoflavones in a large cohort of men and women from two independent studies. Isoflavones are reported to inhibit mineralo- and glucocorticoid hormone production as well as reproductive steroids in vivo and in vitro. We focused on cytochrome P450 17α-hydroxylase (CYP17A1) which catalyses the production of dehydroepiandrosterone (DHEA), in the androgen biosynthesis pathway to elucidate effects on sex steroids in vitro. Design and Setting: Effects of soy isoflavones on steroid levels in two studies comprising 400 patients were examined: 200 men (study 1; 3 months duration) and 200 postmenopausal women (study 2; 6 months duration), randomized to consume 15 g soy protein with 66 mg isoflavones (SPI) or 15 g soy protein alone without isoflavones (SP) daily. Effects of genistein and daidzein on steroid metabolism were determined in vitro, in HEK293 cells expressing CYP17A1 and in the human adrenocortical carcinoma H295R cell model. Results: SPI decreased serum dehydroepiandrosterone sulfate (DHEAS) levels in both men and women (P
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research

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ConclusionsAdjustment of the cfPWV value may be necessary for a more accurate distinction between lower and higher risk group of patients for white matter microstructural injury related to arterial stiffness. Targeting the highest risk group for prevention methods may, in turn, help preserve brain health and cognitive functions.
Source: NeuroImage: Clinical - Category: Radiology Source Type: research
Publication date: Available online 16 September 2019Source: Academic RadiologyAuthor(s): Mohammad Hadi Bagheri, Holger Roth, William Kovacs, Jianhua Yao, Faraz Farhadi, Xiaobai Li, Ronald M. SummersPurposeAccurate pancreas segmentation has application in surgical planning, assessment of diabetes, and detection and analysis of pancreatic tumors. Factors that affect pancreas segmentation accuracy have not been previously reported. The purpose of this study is to identify technical and clinical factors that adversely affect the accuracy of pancreas segmentation on CT.Method and MaterialsIn this IRB and HIPAA compliant study, ...
Source: Academic Radiology - Category: Radiology Source Type: research
Publication date: Available online 16 September 2019Source: Social Science ResearchAuthor(s): Holger Alda, Anett Friedrich, Daniela Rohrbach-SchmidtAbstractFor decades, Western societies have experienced educational expansion accompanied by an upgrading of skills. The literature provides competing hypotheses on the consequences for educational wage returns—among them are the positional value theory, routine-biased technological change, and the social closure theory. We test these theoretical perspectives empirically on young, male full-time workers in West Germany between 1976 and 2010 in two ideal-type occupational ...
Source: Social Science Research - Category: Psychiatry & Psychology Source Type: research
This article examines how CAM practitioners discuss vaccinations with parents in Switzerland, with a focus on childhood vaccinations and human papillomavirus (HPV) vaccinations. We describe how the CAM providers we interviewed (N = 17) and observed during vaccination consultations (N = 18 observations with 5 providers) employed individualized approaches to vaccination. Triangulation of qualitative evidence from interviews and observations allowed us to analyze their discourses and descriptions of experiences (i.e. what they said) and their practices in situ (i.e. what they did). Evidence gathered shows that practit...
Source: Social Science and Medicine - Category: Psychiatry & Psychology Source Type: research
CONCLUSIONS: The studies show that ethyl alcohol concentration may harm injury severity, especially in the case of women. The assessment of the severity of injuries in traffic crash victims is significantly influenced by their age and gender. The more risk factors the scale takes into consideration, the more precise is the assessment. PMID: 31524049 [PubMed - as supplied by publisher]
Source: International Journal of Injury Control and Safety Promotion - Category: Accident Prevention Tags: Int J Inj Contr Saf Promot Source Type: research
Breast cancer in men is rare, but for those at a high risk, screening mammography may be beneficial in detecting early stage tumors.Medscape Medical News
Source: Medscape Radiology Headlines - Category: Radiology Tags: Hematology-Oncology News Source Type: news
ConclusionOur LncH19 ISH data verify the involvement of LncH19 in ESCC. Higher levels of LncH19 expression were not only detected in tumors with larger size and in clinical late stage, but also significantly associated with shorter survival, strongly indicating its clinical significance in the malignant progression of ESCC and useful value as a poor prognostic factor for the patients.
Source: Pathology Research and Practice - Category: Pathology Source Type: research
Publication date: Available online 16 September 2019Source: Pathology - Research and PracticeAuthor(s): Yu-Hui Zhou, Yang Liu, Wei Zhang, Chao Liu, Jian-Jun He, Xiao-Jiang TangABSTRACTBackgroundChemotherapy is the predominant treatment option for patients with breast cancer. Selection of patients according to biomarker will improve chemotherapy efficacy. In the present study, we examined the relations of the expression of candidate genes and 21-recurrence score (RS) results to patients’ demographic characteristics, histopathological factors, and outcomes.MethodsA total of 146 patients were enrolled in this study. The...
Source: Pathology Research and Practice - Category: Pathology Source Type: research
ConclusionmiR-183-5p acts as a potential prognostic biomarker in gastric cancer and regulates cell functions by modulating EEF2.
Source: Pathology Research and Practice - Category: Pathology Source Type: research
Publication date: Available online 16 September 2019Source: Pathology - Research and PracticeAuthor(s): Kun Zhou, Huan Guo, Jun Zhang, Dongmei Zhao, Yuzhen Zhou, Zunrong Zheng, Yuhong Xu, Yanli Li, Donghua WangAbstractGastric cancer (GC) represents one of the most predominant malignancies with high incidence and mortality rates. Although traditional chemotherapeutics, including cisplatin are effective in the treatment of GC, patients often develop drug resistance in clinic. The present study aimed to explore the underlying mechanism of cisplatin-induced drug resistance in GC. The potential role of DNA demethylase ten-eleve...
Source: Pathology Research and Practice - Category: Pathology Source Type: research
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