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Воздействие лечения на стероидом у женщин с множественным склерозом.

Множественный склероз (MS) — хроническое воспалительное нейродегенеративное заболевание центральной нервной системы. Происхождение MS связано с стероидными изменениями во время менструального цикла и беременности. Поскольку данных о воздействии лечения противомоскитных препаратов на стероидом недостаточно, мы провели оценку стерейдомичных изменений (79 стероидов) у 61 женщины-психолога репродуктивного возраста 39 лет (29, 47 лет) после лечения с помощью антимиосных препаратов на платформе GC-MS/MS и иммуномассы (кортизол и эстрадиол). Эти изменения были оценены с использованием уровней стероид

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… Nevertheless, the neuroprotective steroids, pregnenolone and DHEA, significantly increased when evaluating the factor stage in ANOVA model ( Figure 2 ). … Pregnenolone is pro-cognitive and neuroprotective against glutamate-induced neurotoxicity [ 15 ]. Furthermore, sulfates of pregnenolone and DHEA positively modulate NMDARs and σ1 receptors (σ1R) [ 6 , 15 , 46 ]. …

Studies on the induction of rat hepatic CYP1A, CYP2B, CYP3A and CYP4A subfamily form mRNAs in vivo and in vitro using precision-cut rat liver slices.

1. Real-time quantitative reverse transcription-polymerase chain reaction methodology (TaqMan(R)) was used to examine the induction of some … a-naphthoflavone (BNF), 10 micro g ml(-1) ARO, 500 micro M sodium phenobarbitone (NaPB), 20 micro M pregnenolone-16alpha -carbonitrile (PCN), 50 micro M Wy-14,643 (WY) or 50 micro M MCP. 5. With the exception of the effect of BNF on CYP1A1 mRNA levels, the induction of all the CYP mRNAs studied was greater after 24- than after 6-h treatment. Generally, the mag …

Hepatotoxicity of vinyl chloride and 1,1-dichloroethylene. Role of mixed function oxidase system.

Vinyl chloride, an occupational carcinogen, produces acute liver injury in rats pretreated with phenobarbital or Aroclor 1254. Injury appears related to morphologic changes in the endoplasmic reticulum. The degree of injury, as indicated by elevation of serum enzymes derived from the liver, correlates with the magnitude of induction of cytochrome P-450 and its reduction by NADPH. Hepatic injury following 1,1-dichloroethylene exposure differs strikingly from that caused by vinyl chloride and appears to involve plasma membranes, mitochondria, and chromatin and spares endoplasmic reticulum. Induc

Steroidogenic acute regulatory protein (StAR) and the intramitochondrial translocation of cholesterol.

The steroidogenic acute regulatory (StAR) protein regulates the rate limiting step in steroidogenesis, the transport of cholesterol from the outer to the inner mitochondrial membrane. Insight into the structure and function of StAR was attained through molecular genetic studies of congenital lipoid adrenal hyperplasia, a rare disease caused by mutations in the StAR gene. Subsequent functional analysis defined two major domains within the StAR protein, the N-terminal mitochondrial targeting sequence and the C-terminus, which promotes the translocation of cholesterol between the two mitochondria

Direct effects of prolactin on corticosterone release by zona fasciculata-reticularis cells from male rats.

The role of prolactin (PRL) in the male is not fully defined. The aim of this study was to investigate the function and mechanism of PRL on the production of corticosterone by zona fasciculata-reticularis (ZFR) cells in vitro. The ZFR cells were obtained from male rats under normal, hyperprolactinemic, or hypoprolactinemic situation. PRL stimulated the corticosterone release in a dose-dependent pattern in the ZFR cells from normal male rats. The cellular adenosine 3'-5'-cyclic monophosphate (cAMP) concentration positively correlated with PRL concentration in the presence of forskolin or 3-isob

[Proteomic Analysis of Bone Serum Protein in Patients With Osteoporosis Accompanied by Obstructive Sleep Apnea Syndrome].

OBJECTIVE: To analyze the differences in bone serum protein between patients with osteoporosis accompanied by obstructive sleep apnea syndro … ne, tyramine, L-pyroglutamic acid, L-glutamic acid, myristate, glycerol-3-phosphate, caprylic acid, pregnenolone, L-arginine, D-4-hydroxyphenylglycine, and isobutyric acid. Heatmaps showed significant differences in metabolic profiles between the OSAS-osteoporosis group and the osteoporosis group. Pathway enrichment analysis showed that 27 metabolic pathways w …

Precision-cut liver slices from rats of different ages: basal cytochrome P450-dependent monooxygenase activities and inducibility.

The biotransformation capacity - of the cytochrome P450 (CYP) system for example - is lower but inducibility is more pronounced in neonates than in adults. On the other hand, both enzyme activities and inducibility decline with senescence. Precision-cut rat liver slices are widely used as an in vitro tool for the examination of drug toxicity, xenobiotic metabolism or enzyme induction. The aim of the present study was to assess whether age-related changes in CYP activities and induction observed in vivo are also mirrored in vitro in liver slices. For this purpose, different CYP model reactions

Biomolecular map of albumin identifies signatures of severity and early mortality in acute liver failure.

BACKGROUND & AIMS: Acute liver failure (ALF) is associated with high mortality. Alterations in albumin structure and function have been show … bolites built on the top five metabolites, namely, nicotinic acid, l-acetyl carnitine, l-carnitine, pregnenolone sulfate, and N-(3-hydroxybutanoyl)-l-homoserine lactone, showed diagnostic accuracy of 98% (AUC 0.98, 95% CI 0.95-1.0) and distinguish patients with ALF predisposed to early mortality (log-rank <0.05). On validation using high-resolution mass spectr …

Identifying biomarkers of ginseng medicines with different natures on heart failure.

ETHNOPHARMACOLOGICAL RELEVANCE: The nature of Chinese medicine is a unique index to measure its efficacy. Generally, treating the hot syndro … such as BNP, CK, IL-1, T3, T4, cAMP, cGMP, AD, adrenal hormones (DOC, CORT, and COR), progestogens (pregnenolone, P, 17-OH-PR, and 17-OH-P), androgens (DHEA, A4, and T), and estrogens hormones (E2). RESULTS: All ginseng medicines demonstrated varying levels of efficacy in alleviating HF and GS exhibited a significant protective effect on HF. The ginseng medic …

A higher rate of hyperandrogenic disorders in female-to-male transsexuals.

In an effort to elucidate the aetiology of female-to-male transsexualism (FM-TS) 12 out of an annual sample of 16 untreated female-to-male t … esterone (PROG), 17-hydroxyprogesterone (17OHP), 11-deoxycortisol (S), cortisol (F), cortisone (E), pregnenolone (PREG) and 17-hydroxypregnenolone (OHPREG) were assessed before and 60 min after ACTH stimulation. Transvaginal ultrasound was performed in nine out of 12 FMT (20;11 to 44;8, M 27;5; m 29.1 +/- 7.5) but not in CF. Results showed that 10 FMT (83.3%) …

Association of Circulating Progesterone With Breast Cancer Risk Among Postmenopausal Women.

IMPORTANCE: The role of endogenous progesterone in the development of breast cancer remains largely unexplored to date, primarily owing to a … e conducted between July 15, 2017, and December 20, 2018. EXPOSURES: Circulating concentrations of pregnenolone, progesterone, and their major metabolites. MAIN OUTCOMES AND MEASURES: Development of breast cancer, with hazard ratios (HRs) and 95% CIs was estimated using Cox proportional hazards regression adjusted for key confounders, including estradiol. Ev …

Investigating key genes and molecular mechanisms of prostate cancer and coronary heart disease through transcriptomics and experimental validation.

BackgroundProstate cancer (PC), a common male urogenital malignancy, and coronary heart disease (CHD), a cardiovascular disease from coronary lesions causing myocardial ischemia, interact in comorbidity. This study integrated their transcriptome data to reveal comorbid mechanisms and develop cross-disease targets.MethodsIn this research, candidate genes were derived from differential analysis and intersection analysis. Subsequently, machine learning algorithms were integrated with receiver operating characteristic (ROC) curve assessment and expression confirmation to identify key genes. Nomogr

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… (C) Molecular docking results of ATP2B4 with pregnenolone sulfate. CHD, coronary heart disease; PC, prostate cancer. … Among them, the docking score between ADD3 and DL-175 was −6.7 kcal/mol, while that between ATP2B4 and pregnenolone sulphate was −9.0 kcal/mol. …

'Exaggerated adrenarche' in children presenting with premature adrenarche.

OBJECTIVE: Previous reports of endocrinological profiles in children presenting with premature adrenarche have not shown consistent abnormal … ularly and collecting blood at 0, 30 and 60 minutes) were performed when clinically indicated. 17OH-Pregnenolone (17OHPreg) was also measured during ACTH stimulation tests in 13 individuals to look for abnormalities of 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD). RESULTS: The age of onset ranged from 3 to 9.5 years (mean 6.8 +/- 1.3). There were no signi …