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Journal of Clinical Endocrinology and Metabolism

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https://www.readbyqxmd.com/read/29145611/identification-of-novel-potentially-pleiotropic-variants-associated-with-osteoporosis-and-obesity-using-cfdr-method
#1
Yuan Hu, Li-Jun Tan, Xiang-Ding Chen, Zhen Liu, Shi-Shi Min, Qin Zeng, Hui Shen, Hong-Wen Deng
Context: Genome-wide association studies (GWASs) have been successful in identifying loci associated with osteoporosis and obesity. However, the findings just explain a small fraction of the total genetic variance. Objective: The aim of this study was to identify novel pleiotropic genes important in osteoporosis and obesity. Design and Setting: A pleiotropic conditional false discovery rate (cFDR) method was applied to three independent GWAS summary statistics of femoral neck bone mineral density (FN BMD), body mass index (BMI) and waist-hip ratio (WHR)...
November 14, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29140513/amino-acid-and-fatty-acid-levels-affect-hepatic-phosphorus-metabolite-content-in-metabolically-healthy-humans
#2
Sabine Kahl, Bettina Nowotny, Klaus Straßburger, Alessandra Bierwagen, Birgit Klüppelholz, Barbara Hoffmann, Guido Giani, Peter J Nowotny, Franziska Wallscheid, Erifili Hatziagelaki, Giovanni Pacini, Jong-Hee Hwang, Michael Roden
Objective: Hepatic energy metabolism negatively relates to insulin resistance and liver fat content in type 2 diabetes patients, but its role in metabolically healthy humans is unclear. We hypothesized that intrahepatocellular γ-adenosine triphosphate (γATP) and inorganic phosphate (Pi) concentrations exhibit similar associations with insulin sensitivity in non-diabetic non-obese volunteers. Research Design and methods: A total of 76 participants underwent a 4-point sampling 75-g OGTT as well as in vivo31P/1H magnetic resonance spectroscopy...
November 13, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29140440/cord-metabolic-profiles-in-obese-pregnant-women-insights-into-offspring-growth-and-body-composition
#3
Nashita Patel, Christian Hellmuth, Olaf Uhl, Keith Godfrey, Annette Briley, Paul Welsh, Dharmintra Pasupathy, Paul Seed, Berthold Koletzko, Lucilla Poston
Context: Offspring exposed in-utero to maternal obesity have an increased risk of later obesity; however, the underlying mechanisms remain unknown. Objective: To assess the effect of an antenatal lifestyle intervention in obese women on the offspring's cord blood metabolic profile, and examine associations of cord blood metabolic profile with maternal clinical characteristics and offspring anthropometry at birth and age 6 months. Design: Randomised controlled trial and cohort study...
November 13, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126250/diabetic-microvascular-disease-an-endocrine-society-scientific-statement
#4
Eugene J Barrett, Zhenqi Liu, Mogher Khamaisi, George L King, Ronald Klein, Barbara E K Klein, Timothy M Hughes, Suzanne Craft, Barry I Freedman, Donald W Bowden, Aaron I Vinik, Carolina M Casellini
Both type 1 and type 2 diabetes adversely affect the microvasculature in multiple organs. Our understanding of the genesis of this injury and of potential interventions to prevent, limit, or reverse injury/dysfunction is continuously evolving. This statement reviews biochemical/cellular pathways involved in facilitating and abrogating microvascular injury. The statement summarizes the types of injury/dysfunction that occur in the three classical diabetes microvascular target tissues, the eye, the kidney, and the peripheral nervous system; the statement also reviews information on the effects of diabetes and insulin resistance on the microvasculature of skin, brain, adipose tissue, and cardiac and skeletal muscle...
November 8, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126114/corrigendum-for-a-biallelic-mutation-in-the-homologous-recombination-repair-gene-spidr-is-associated-with-human-gonadal-dysgenesis
#5
(no author information available yet)
No abstract text is available yet for this article.
November 8, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29121255/adipocyte-expression-of-slc19a1-links-dna-hypermethylation-to-adipose-tissue-inflammation-and-insulin-resistance
#6
Paul Petrus, Lucia Bialesova, Antonio Checa, Alastair Kerr, Shama Naz, Jesper Bäckdahl, Ana Gracia, Sofia Toft, Karin Dahlman-Wright, Per Hedén, Ingrid Dahlman, Craig E Wheelock, Peter Arner, Niklas Mejhert, Hui Gao, Mikael Rydén
Context: Insulin resistance (IR) is promoted by a chronic low-grade inflammation in white adipose tissue (WAT). The latter may be regulated through epigenetic mechanisms such as DNA-methylation. The one carbon cycle (1CC) is a central metabolic process governing DNA-methylation. Objective: To identify adipocyte-expressed 1CC genes linked to WAT inflammation, IR and their causal role. Design: Cohort study. Setting: Outpatient academic clinic...
November 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29121253/the-role-of-nrg1-in-the-predisposition-to-papillary-thyroid-carcinoma
#7
Huiling He, Wei Li, Sandya Liyanarachchi, Yanqiang Wang, Lianbo Yu, Luke K Genutis, Sophia Maharry, John E Phay, Rulong Shen, Pamela Brock, Albert de la Chapelle
Context: Previous genome-wide association studies (GWAS) have shown that SNP rs2439302 in chromosome 8p12 is significantly associated with papillary thyroid carcinoma (PTC) risk and dysregulated NRG1 expression. The underlying mechanisms remain to be discovered. Objective: To evaluate the expression of NRG1 isoforms, candidate functional variants, and potential genes downstream of NRG1 in thyroid tissue. Methods: Quantitative RT-PCR was applied for gene expression analysis...
November 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29121215/trabecular-bone-morphology-correlates-with-skeletal-maturity-and-body-composition-in-healthy-adolescent-girls
#8
Deborah M Mitchell, Signe Caksa, Amy Yuan, Mary L Bouxsein, Madhusmita Misra, Sherri-Ann M Burnett-Bowie
Context: Growth in healthy children is associated with changes in bone density and microarchitecture. Trabecular morphology is an additional important determinant of bone strength, but little is currently known about trabecular morphology in healthy young people. Objective: To investigate associations of trabecular morphology with increasing maturity and with body composition in healthy girls. Design: Cross-sectional study. Setting: Academic research center...
November 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29121201/high-prevalence-of-radiological-vertebral-fractures-in-women-on-tsh-suppressive-therapy-for-thyroid-carcinoma
#9
Gherardo Mazziotti, Anna Maria Formenti, Stefano Frara, Roberto Olivetti, Giuseppe Banfi, Maurizio Memo, Roberto Maroldi, Raffaele Giubbini, Andrea Giustina
Context: Bone loss and non-vertebral fractures have been reported in patients with differentiated thyroid carcinoma (DTC) undergoing TSH-suppressive therapy. Radiological vertebral fractures (VFs) are an early and clinically crucial marker of bone fragility but they have never been investigated so far in this specific clinical setting. Objective and design: In this cross-sectional study we evaluated the prevalence and determinants of radiological VFs in women under L-T4 therapy for DTC...
November 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126290/effects-of-levothyroxine-on-pregnant-women-with-subclinical-hypothyroidism-negative-for-thyroid-peroxidase-antibodies
#10
Sima Nazarpour, Fahimeh Ramezani Tehrani, Masoumeh Simbar, Maryam Tohidi, Sonia Minooee, Maryam Rahmati, Fereidoun Azizi
Context: Currently, there is no consensus on universal thyroid screening and Levothyroxine (LT4) treatment of subclinical hypothyroid pregnant women who are negative for thyroid peroxidase antibody (SCH-TPOAb-). Objective: We aimed to evaluate the benefits of LT4 treatment on pregnancy outcomes in SCH-TPOAb- women. Design: This study was conducted within the framework of the Tehran Thyroid and pregnancy study. A single-blind randomized clinical trial was undertaken on SCH-TPOAb- pregnant women...
November 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126197/impaired-insulin-action-is-associated-with-increased-glucagon-concentrations-in-non-diabetic-humans
#11
Anu Sharma, Ron T Varghese, Meera Shah, Chiara Dalla Man, Claudio Cobelli, Robert A Rizza, Kent R Bailey, Adrian Vella
Context: Abnormal glucagon concentrations contribute to hyperglycemia but the mechanism(s) of α-cell dysfunction in prediabetes are unclear. Objective: We sought to determine the relative contributions of insulin secretion and action to α-cell dysfunction in non-diabetic subjects across the spectrum of glucose tolerance. Design: This was a cross-sectional study. A subset of subjects (n = 120) was studied in the presence and absence of free fatty acid (FFA) elevation, achieved by infusion of intralipid + heparin, to cause insulin resistance...
November 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126162/high-circulating-free-thyroxine-levels-may-increase-the-risk-of-frailty-the-rotterdam-study
#12
Arjola Bano, Layal Chaker, Josje Schoufour, M Arfan Ikram, Maryam Kavousi, Oscar H Franco, Robin P Peeters, Francesco U S Mattace-Raso
Context: Thyroid hormones affect metabolism in various tissues, organs and systems. However, the overall impact of thyroid function on an individual's vulnerability to adverse outcomes remains unclear. Objective: To investigate the cross-sectional and prospective association of thyroid function with frailty index, a well-established measure of overall health. Design and Setting: The Rotterdam Study, a population-based, prospective cohort study...
November 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126147/adrenocorticotropin-acutely-regulates-pregnenolone-sulfate-production-by-the-human-adrenal-in-vivo-and-in-vitro
#13
Juilee Rege, Aya T Nanba, Richard J Auchus, Jianwei Ren, Hwei-Ming Peng, William E Rainey, Adina F Turcu
Background: Dehydroepiandrosterone sulfate (DHEAS) is the most abundant steroid in human circulation, and ACTH is considered the major regulator of its synthesis. Pregnenolone sulfate (PregS) and 5-Androstenediol-3-sulfate (AdiolS) have recently emerged as biomarkers of adrenal disorders. Objective: To define the relative human adrenal production of ∆5-steroid sulfates under basal and cosyntropin-stimulated conditions. Methods: Liquid chromatography-tandem mass spectrometry was used to quantify three unconjugated and four sulfated ∆5-steroids in: 1) paired adrenal vein (AV) and mixed venous serum samples (21 patients), and 2) cultured human adrenal cells, both before and after cosyntropin stimulation; 3) microdissected zona fasciculata (ZF) and zona reticularis (ZR) from 5 human adrenal glands; 4) reconstituted in vitro human 17α-hydroxylase/17,20-lyase (CYP17A1/ P450 17A1) system...
November 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126119/lower-trabecular-bone-score-in-patients-with-primary-aldosteronism-human-skeletal-deterioration-by-aldosterone-excess
#14
Beom-Jun Kim, Mi Kyung Kwak, Seong Hee Ahn, Hyeonmok Kim, Seung Hun Lee, Jung-Min Koh
Context: Despite the potential detrimental effects of aldosterone excess on bone metabolism, there are discrepancies between fracture risk and bone mass in patients with and without primary aldosteronism (PA). Objective: To clarify the possibility that aldosterone excess may mainly affect bone properties which are not explained by bone mineral density (BMD). Design, Setting, and Patients: Among 625 consecutive patients with newly diagnosed adrenal incidentaloma, 72 patients with biochemically confirmed PA and 335 patients with nonfunctional adrenal incidentaloma were defined as cases and controls, respectively...
November 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126319/effects-of-vitamin-d-supplementation-on-semen-quality-reproductive-hormones-and-live-birth-rate-a-randomized-clinical-trial
#15
Martin Blomberg Jensen, Jacob Gerner Lawaetz, Jørgen Holm Petersen, Anders Juul, Niels Jørgensen
Context: Animal models and cross-sectional cohort studies have suggested a beneficial role for vitamin D in male reproduction. Objective: Determine the effect of vitamin D and calcium supplementation on semen quality in infertile men with serum 25-hydroxyvitamin-D (25OHD)≤ 50 nmol/l. Design: A single centre, triple-blinded, randomized clinical trial. Participants: 1427 infertile men were screened to include 330. 1002 men did not meet inclusion criteria and 95 did not wish to participate...
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126304/sdhc-promoter-methylation-a-novel-pathogenic-mechanism-in-parasympathetic-paragangliomas
#16
Cristóbal Bernardo-Castiñeira, Nuria Valdés, Marta I Sierra, Inés Sáenz-de-Santa-María, Gustavo F Bayón, Raúl F Perez, Agustín F Fernández, Mario F Fraga, Aurora Astudillo, Rafael Menéndez, Belén Fernández, Maribel Del Olmo, Carlos Suarez, María-Dolores Chiara
Context: Germline mutations in the succinate dehydrogenase A, B, C, and D genes (collectively, SDHx) predispose to the development of paragangliomas (PGLs) arising at the parasympathetic or sympathetic neuroendocrine systems. SDHx mutations cause absence of tumoral immunostaining for SDHB. However, negative SDHB-immunostaining has also been found in a subset of PGLs that lack SDHx mutations. Settings: Here, we report the comprehensive molecular characterization of one such a tumor of parasympathetic origin compared with healthy paraganglia and other PGLs with or without SDHx mutations...
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126227/letter-to-the-editor-development-and-risk-factors-of-type-2-diabetes-in-a-nation-wide-population-of-women-with-polycystic-ovary-syndrome
#17
Sarantis Livadas
No abstract text is available yet for this article.
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126200/response-to-letter-development-and-risk-factors-of-type-2-diabetes-in-a-nationwide-population-of-women-with-polycystic-ovary-syndrome
#18
Dorte Glintborg, Katrine Hass Rubin, Bo Abrahamsen, Marianne Andersen
No abstract text is available yet for this article.
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126139/alendronate-use-and-the-risk-of-nonvertebral-fracture-during-glucocorticoid-therapy-a-retrospective-cohort-study
#19
Jonathan Bergman, Anna Nordström, Peter Nordström
Context: Glucocorticoids increase the risk of nonvertebral fracture, but no clinical trial has shown that nonvertebral fractures can be prevented by co-administration of an anti-osteoporotic drug. Objective: To estimate the effect of alendronate on the risk of nonvertebral fracture in older adults taking oral glucocorticoids. Design: Retrospective cohort study using national Swedish registers. Setting: Hospitalized care and ambulatory specialist care...
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29126111/second-radioiodine-treatment-limited-benefit-for-differentiated-thyroid-cancer-with-loforegional-persistent-disease
#20
Dania Hirsch, Alexander Gorshtein, Eyal Robenshtok, Hiba Masri-Iraqi, Amit Akirov, Hadar Duskin Bitan, Ilan Shimon, Carlos Benbassat
Purpose: Radioactive iodine (RAI) treatment is often indicated after total thyroidectomy in differentiated thyroid cancer (DTC). However, its role in biochemical or loco-regional persistent DTC is unclear. We aimed to investigate the impact of a second RAI treatment in patients with incomplete response to initial treatment and no evidence of distant metastases. Methods: Patients who underwent at least two RAI treatments over a 20-year period at a tertiary hospital were identified...
November 3, 2017: Journal of Clinical Endocrinology and Metabolism
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