Xiamen Diabetes Institute, The First Affiliated Hospital of Xiamen University, Xiamen, China
Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
Department of Endocrinology and Diabetes, The First Affiliated Hospital of Xiamen University, Xiamen, China
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Xiamen Diabetes Institute, The First Affiliated Hospital of Xiamen University, Xiamen, China
Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Xiamen Diabetes Institute, The First Affiliated Hospital of Xiamen University, Xiamen, China
Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Xiamen Diabetes Institute, The First Affiliated Hospital of Xiamen University, Xiamen, China
Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
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Fujian Provincial Key Laboratory of Translational Medicine for Diabetes, Xiamen, China
Department of Endocrinology and Diabetes, The First Affiliated Hospital of Xiamen University, Xiamen, China
Xiamen Clinical Medical Center for Endocrine and Metabolic Diseases, Xiamen Diabetes Prevention and Treatment Center, Xiamen, China
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imbalance between ECM synthesis and degradation can lead to the development of liver fibrosis ( 16 , 17 , 18 ). Activation of the HSCs is currently regarded as a central event in liver fibrosis ( 19 , 20 ). Studies over the last two decades have shown
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taking into account other professional and political factors such as: The need for the development of UK-wide standards in adult endocrine nursing. The need for professional accreditation of skills and knowledge in practice. The increased focus on work
Division of Epidemiology and Biometry, Carl von Ossietzky Universität, Oldenburg, Germany
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Introduction Craniopharyngiomas (CP) are rare embryonic malformations, which arise from ectoblastic remnants of Rathke’s pouch. Thus, CP can be found anywhere along the path of development of Rathke’s pouch in hypothalamic and pituitary
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Role of sex and gender on the development of type 2 diabetes There is increasing evidence that sex and gender differences influence the epidemiology, pathophysiology, treatment and outcomes of many diseases, including type 2 diabetes (T2DM
Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Setagaya, Tokyo, Japan
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Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Setagaya, Tokyo, Japan
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Research Center for Environment and Developmental Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
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Research Center for Environment and Developmental Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
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Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Setagaya, Tokyo, Japan
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Objective
Ultra-sensitive hormone assays have detected slight sex differences in blood estradiol (E2) levels in young children before adrenarche. However, the origin of circulating E2 in these individuals remains unknown. This study aimed to clarify how E2 is produced in young girls before adrenarche.
Design
This is a satellite project of the Japan Environment and Children’s Study organized by the National Institute for Environmental Studies.
Methods
We collected blood samples from healthy 6-year-old Japanese children (79 boys and 71 girls). Hormone measurements and data analysis were performed in the National Institute for Environmental Studies and the Medical Support Center of the Japan Environment and Children’s Study, respectively.
Results
E2 and follicle stimulating hormone (FSH) levels were significantly higher in girls than in boys, while dehydroepiandrosterone sulfate (DHEA-S) and testosterone levels were comparable between the two groups. Girls showed significantly higher E2/testosterone ratios than boys. In children of both sexes, a correlation was observed between E2 and testosterone levels and between testosterone and DHEA-S levels. Moreover, E2 levels were correlated with FSH levels only in girls.
Conclusions
The results indicate that in 6-year-old girls, circulating E2 is produced primarily in the ovary from adrenal steroids through FSH-induced aromatase upregulation. This study provides evidence that female-dominant E2 production starts several months or years before adrenarche. The biological significance of E2 biosynthesis in these young children needs to be clarified in future studies.
Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
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Department of Medicine, Holbæk Hospital, Holbæk, Denmark
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Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
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prospective data regarding development of frank hypothyroidism ( 10 ). Increased autoimmunity in PCOS with higher secretion of TRAb antibodies could increase the risk for Graves’ disease and higher activity of the inflammatory system could increase the risk
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Division of Endocrinology and Metabolism, Department of Medicine, Georgetown University, Washington, District of Columbia, USA
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Objective
Accurate measurement of steroid hormones remains challenging. Mass spectrometry affords a reliable means for quantitating steroid profiles accurately. Our objective was to establish and define (1) the extent of diurnal fluctuations in steroid concentrations that potentially necessitate strict adherence to time of sample acquisition and (2) time-dependent steroid reference intervals.
Design
Nine steroid markers were examined in couplets in males and females.
Methods
Using isotope dilution high-performance liquid chromatography–tandem mass spectrometric (LC–MS/MS) analysis, we developed a multi-steroid profile requiring only a minimal volume of serum (0.1 mL). Couplet (AM and PM) measurements of steroid hormones for 120 healthy females (F) and 62 healthy males (M) were obtained. Patients were recruited from several participating centers.
Results
The following diurnal values were noted to be significantly different in both females and males: cortisone, cortisol, corticosterone, 11 deoxycortisol (11 DOC), androstenedione, 17a-hydroxyprogesterone (17 OHP) and dehydroepiandrosterone (DHEA). Testosterone was only found to have significant diurnal variance in males. Progesterone showed no significant difference in AM and PM values for either groups and thus may provide an internal control.
Conclusions
When diagnosing endocrine disorders, it is imperative to acknowledge the 24-h diurnal variation of the biochemical steroid markers. We highlight the importance of standardization of collection times and appropriate implementation of reference intervals.
Precis
We identify diurnal fluctuations in steroid concentrations with time of day and emphasize the importance of adhering to firm time of sample acquisition.
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triggered by the imbalance between the antioxidant system and oxidative stress ( 12 , 14 ). There are two major pathways that contribute to the development of ferroptosis: the enzyme-regulated pathway and transporter-dependent pathway. The enzyme
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Endocrinology and Diabetology Unit, Diabetology and Metabolic Disease Unit, Endocrinology Unit, Unit of Human Pathology, Surgical Department, Department of Clinical Sciences and Community Health, University of Milan, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pad.Granelli, Via F. Sforza, 35, 20122 Milan, Italy
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are still scarce. In this study, we evaluated the expression of PKA regulatory subunits in human adipose tissue during fetal development as well as their role in the differentiation process of two in vitro cell models of adipogenesis, i.e., 3T3-L1
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differences from their unaffected counterparts. As they grow older their phenotypical, psychosocial and intellectual development is seen to more clearly diverge from that of their normally developing peers. The typical TS-specific cognitive profile is