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Frontiers in Endocrinology

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https://www.readbyqxmd.com/read/29780360/the-association-between-long-term-acenocoumarol-treatment-and-vitamin-d-deficiency
#1
Jolanta Sawicka-Powierza, Jerzy Konstantynowicz, Ewa Jablonska, Beata Zelazowska-Rutkowska, Wojciech Jelski, Pawel Abramowicz, Caroline Sasinowski, Slawomir Chlabicz
Objective: Both vitamin D and K2 are involved in a number of metabolic processes, including bone metabolism; however, associations between the vitamins are not fully understood. The aim of the study was to evaluate serum concentrations of 25-hydroxyvitamin D [25(OH)D] in adult patients receiving long-term acenocoumarol (AC) treatment. Participants and methods: In this cross-sectional study, 58 Caucasian patients (31 women, 27 men) with a median age of 65 years receiving long-term AC therapy were evaluated and compared with 35 age- and gender-matched healthy controls...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780359/the-mitotic-and-metabolic-effects-of-phosphatidic-acid-in-the-primary-muscle-cells-of-turbot-scophthalmus-maximus
#2
Tingting Wang, Xuan Wang, Huihui Zhou, Haowen Jiang, Kangsen Mai, Gen He
Searching for nutraceuticals and understanding the underlying mechanism that promote fish growth is at high demand for aquaculture industry. In this study, the modulatory effects of soy phosphatidic acids (PA) on cell proliferation, nutrient sensing, and metabolic pathways were systematically examined in primary muscle cells of turbot ( Scophthalmus maximus ). PA was found to stimulate cell proliferation and promote G1/S phase transition through activation of target of rapamycin signaling pathway. The expression of myogenic regulatory factors, including myoD and follistatin , was upregulated, while that of myogenin and myostatin was downregulated by PA...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780358/sex-and-gender-differences-in-prevention-of-type-2-diabetes
#3
REVIEW
Jürgen Harreiter, Alexandra Kautzky-Willer
Lifestyle intervention programs are effective in the prevention of type 2 diabetes mellitus (T2DM) in high risk populations. However, most studies only give limited information about the influence of sex and/or gender effectiveness of these interventions. So far, similar outcome was reported for diabetes progression and weight loss. Nevertheless, long-term data on cardiovascular outcome are sparse but favoring women regarding all-cause and cardiovascular mortality. In both men and women, sex hormone imbalances and reproductive disorders are associated with a higher risk of T2DM development...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780357/altered-circadian-rhythms-and-breast-cancer-from-the-human-to-the-molecular-level
#4
REVIEW
Hui-Hsien Lin, Michelle E Farkas
Circadian clocks are fundamental, time-tracking systems that allow organisms to adapt to the appropriate time of day and drive many physiological and cellular processes. Altered circadian rhythms can result from night-shift work, chronic jet lag, exposure to bright lights at night, or other conditioning, and have been shown to lead to increased likelihood of cancer, metabolic and cardiovascular diseases, and immune dysregulation. In cases of cancer, worse patient prognoses and drug resistance during treatment have also been observed...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780356/physiological-and-molecular-mechanisms-of-methionine-restriction
#5
REVIEW
Mary Neslund Latimer, Khalid Walid Freij, Beth M Cleveland, Peggy R Biga
Methionine restriction (MR) has been studied extensively over the last 25 years for its role in altering metabolic hallmarks of disease. Animals subjected to MR, display changes in metabolic flexibility demonstrated by increases in energy expenditure, glucose tolerance, and lifespan. These changes have been well characterized in a number of model systems and significant progress has been made in understanding how hepatic fibroblast growth factor 21 links MR to several components of its metabolic phenotype...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780355/therapeutic-interference-with-vascular-calcification-lessons-from-klotho-hypomorphic-mice-and-beyond
#6
REVIEW
Florian Lang, Christina Leibrock, Lisann Pelzl, Meinrad Gawaz, Burkert Pieske, Ioana Alesutan, Jakob Voelkl
Medial vascular calcification, a major pathophysiological process associated with cardiovascular disease and mortality, involves osteo-/chondrogenic transdifferentiation of vascular smooth muscle cells (VSMCs). In chronic kidney disease (CKD), osteo-/chondrogenic transdifferentiation of VSMCs and, thus, vascular calcification is mainly driven by hyperphosphatemia, resulting from impaired elimination of phosphate by the diseased kidneys. Hyperphosphatemia with subsequent vascular calcification is a hallmark of klotho-hypomorphic mice, which are characterized by rapid development of multiple age-related disorders and early death...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780354/targeting-the-metastatic-bone-microenvironment-by-micrornas
#7
REVIEW
Marie-Therese Haider, Hanna Taipaleenmäki
Bone metastases are a common and devastating feature of late-stage breast cancer. Metastatic bone disease is a consequence of disturbed bone remodeling due to pathological interactions between cancer cells and the bone microenvironment (BME). In the BME, breast cancer cells severely alter the balanced bone formation and bone resorption driven by osteoblasts and osteoclasts. The complex cellular cross talk in the BME is governed by secreted molecules, signaling pathways and epigenetic cues including non-coding RNAs...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780353/normal-performance-in-non-visual-social-cognition-tasks-in-women-with-turner-syndrome
#8
David Anaki, Tal Zadikov-Mor, Vardit Gepstein, Ze'ev Hochberg
Turner syndrome (TS) is a chromosomal disorder in women resulting from a partial or complete absence of the X chromosome. In addition to physical and hormonal dysfunctions, along with a unique neurocognitive profile, women with TS are reported to suffer from social functioning difficulties. Yet, it is unclear whether these difficulties stem from impairments in social cognition per se or from other deficits that characterize TS but are not specific to social cognition. Previous research that has probed social functioning in TS is equivocal regarding the source of these psychosocial problems since they have mainly used tasks that were dependent on visual-spatial skills, which are known to be compromised in TS...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780352/the-nomogram-of-penile-length-and-circumference-in-iranian-term-and-preterm-neonates
#9
Fahimeh Soheilipour, Farzaneh Rohani, Elham Hashemi Dehkordi, Roya Isa Tafreshi, Parisa Mohagheghi, Seyed-Mohammadsalar Zaheriani, Fatemeh Jesmi, Hamid Salehiniya
Background and objectives: The normal length of penis in preterm and term neonates is different among different nations, and is affected by various factors. The present study aimed to determine stretched penile length (SPL) values and cutoff level of micropenis in term and preterm Iranian neonates, for the first time. Materials and methods: All male neonates born in two general hospitals of Tehran (Akbarabadi, and Rasoul hospitals), center of Iran, with gestational age of 28-42 weeks were included and their SPL and penile circumference (PC) were examined on the first 3 days after birth by the same physician...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29774010/efficacy-of-vandetanib-in-treating-locally-advanced-or-metastatic-medullary-thyroid-carcinoma-according-to-recist-criteria-a-systematic-review-and-meta-analysis
#10
Pierpaolo Trimboli, Marco Castellana, Camilla Virili, Francesco Giorgino, Luca Giovanella
Background: Vandetanib is the most largely used tyrosine kinase inhibitor (TKI) in patients with locally advanced and/or metastatic medullary thyroid cancer (MTC). Here, we conducted a systematic review on its efficacy and attempted to perform a meta-analysis adopting standardized RECIST criteria as end-points. Methods: The terms "medullary thyroid" and "protein kinase inhibitor" (then including all TKIs) were searched in PubMed, ClinicalTrials...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29770127/temporal-expression-patterns-of-genes-related-to-sex-steroid-action-in-sexually-dimorphic-nuclei-during-puberty
#11
Moeko Kanaya, Masahiro Morishita, Shinji Tsukahara
Sex steroids play a major role in sexually dimorphic brain development during not only the perinatal period but also the pubertal period. We previously showed that, in male mice, the estrogen receptor-α ( Esr1 ) and aromatase ( Cyp19a1 ) genes are essential to the sexually dimorphic formation of the anteroventral periventricular nucleus (AVPV) and the principal nucleus of the bed nucleus of the stria terminalis (BNSTp), but the estrogen receptor-β ( Esr2 ) gene is not necessary. We also showed that the androgen receptor ( Ar ) gene is essential to the sexually dimorphic formation of the BNSTp...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29770126/crosstalk-between-the-unfolded-protein-response-micrornas-and-insulin-signaling-pathways-in-search-of-biomarkers-for-the-diagnosis-and-treatment-of-type-2-diabetes
#12
REVIEW
Chinar Berry, Megha Lal, B K Binukumar
Type 2 diabetes mellitus (T2DM) is a metabolic disorder that is characterized by functional defects in glucose metabolism and insulin secretion. Its complex etiology and multifaceted nature have made it difficult to design effective therapies for early diagnosis and treatment. Several lines of evidence indicate that aberrant activation of the unfolded protein response (UPR) in response to endoplasmic reticulum (ER) stress impairs the β cell's ability to respond to glucose and promotes apoptosis. Elucidating the molecular mechanisms that govern β cell dysfunction and cell death can help investigators design therapies to halt or prevent the development of T2DM...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29770125/fgf23-actions-on-target-tissues-with-and-without-klotho
#13
REVIEW
Beatrice Richter, Christian Faul
Fibroblast growth factor (FGF) 23 is a phosphaturic hormone whose physiologic actions on target tissues are mediated by FGF receptors (FGFR) and klotho, which functions as a co-receptor that increases the binding affinity of FGF23 for FGFRs. By stimulating FGFR/klotho complexes in the kidney and parathyroid gland, FGF23 reduces renal phosphate uptake and secretion of parathyroid hormone, respectively, thereby acting as a key regulator of phosphate metabolism. Recently, it has been shown that FGF23 can also target cell types that lack klotho...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29770124/does-family-history-of-obesity-cardiovascular-and-metabolic-diseases-influence-onset-and-severity-of-childhood-obesity
#14
Domenico Corica, Tommaso Aversa, Mariella Valenzise, Maria Francesca Messina, Angela Alibrandi, Filippo De Luca, Malgorzata Wasniewska
Objectives: The objectives were to evaluate (1) the metabolic profile and cardiometabolic risk in overweight/obese children at first assessment, stratifying patients according to severity of overweight and age; and (2) to investigate the relationship between family history (FH) for obesity and cardiometabolic diseases and severity of childhood obesity. Methods: In this cross-sectional, retrospective, observational study, 260 children (139 female), aged between 2...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29765356/soluble-and-cell-cell-mediated-drivers-of-proteasome-inhibitor-resistance-in-multiple-myeloma
#15
REVIEW
Mariah L Farrell, Michaela R Reagan
It is becoming clear that myeloma cell-induced disruption of the highly organized bone marrow components (both cellular and extracellular) results in destruction of the marrow and support for multiple myeloma (MM) cell proliferation, survival, migration, and drug resistance. Since the first phase I clinical trial on bortezomib was published 15 years ago, proteasome inhibitors (PIs) have become increasingly common for treatment of MM and are currently an essential part of any anti-myeloma combination therapy...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29765355/tuberculosis-the-disrupted-immune-endocrine-response-and-the-potential-thymic-repercussion-as-a-contributing-factor-to-disease-physiopathology
#16
REVIEW
Luciano D'Attilio, Natalia Santucci, Bettina Bongiovanni, María L Bay, Oscar Bottasso
Upon the pathogen encounter, the host seeks to ensure an adequate inflammatory reaction to combat infection but at the same time tries to prevent collateral damage, through several regulatory mechanisms, like an endocrine response involving the production of adrenal steroid hormones. Our studies show that active tuberculosis (TB) patients present an immune-endocrine imbalance characterized by an impaired cellular immunity together with increased plasma levels of cortisol, pro-inflammatory cytokines, and decreased amounts of dehydroepiandrosterone...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29765354/pituitary-directed-therapies-for-cushing-s-disease
#17
REVIEW
Fabienne Langlois, Jennifer Chu, Maria Fleseriu
Cushing's disease (CD) is caused by a pituitary corticotroph neuroendocrine tumor inducing uncontrolled hypercortisolism. Transsphenoidal surgery is the first-line treatment in most cases. Nonetheless, some patients will not achieve cure even in expert hands, others may not be surgical candidates and a significant percentage will experience recurrence. Many patients will thus require medical therapy to achieve disease control. Pharmacologic options to treat CD have increased in recent years, with an explosion in knowledge related to pathophysiology at the molecular level...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29760682/daily-gene-expression-rhythms-in-rat-white-adipose-tissue-do-not-differ-between-subcutaneous-and-intra-abdominal-depots
#18
Rianne van der Spek, Eric Fliers, Susanne E la Fleur, Andries Kalsbeek
White adipose tissue (WAT) is present in different depots throughout the body. Although all depots are exposed to systemic humoral signals, they are not functionally identical. Studies in clock gene knockout animals and in shift workers suggest that daily rhythmicity may play an important role in lipid metabolism. Differences in rhythmicity between fat depots might explain differences in depot function; therefore, we measured mRNA expression of clock genes and metabolic genes on a 3-h interval over a 24-h period in the subcutaneous inguinal depot and in the intra-abdominal perirenal, epididymal, and mesenteric depots of male Wistar rats...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29760681/sex-steroids-adult-neurogenesis-and-inflammation-in-cns-homeostasis-degeneration-and-repair
#19
REVIEW
Tracy A Larson
Sex steroidal hormones coordinate the development and maintenance of tissue architecture in many organs, including the central nervous systems (CNS). Within the CNS, sex steroids regulate the morphology, physiology, and behavior of a wide variety of neural cells including, but not limited to, neurons, glia, endothelial cells, and immune cells. Sex steroids spatially and temporally control distinct molecular networks, that, in turn modulate neural activity, synaptic plasticity, growth factor expression and function, nutrient exchange, cellular proliferation, and apoptosis...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29760680/disruption-in-thyroid-signaling-pathway-a-mechanism-for-the-effect-of-endocrine-disrupting-chemicals-on-child-neurodevelopment
#20
REVIEW
Akhgar Ghassabian, Leonardo Trasande
Thyroid hormones are crucial in normal brain development. Transient and mild thyroid hormone insufficiency in pregnancy is also associated with impaired neurodevelopment in the offspring (e.g., 3-4 IQ score loss in association with maternal free thyroxine in the lowest fifth percentile). While inadequate iodine intake remains the most common underlying cause of mild thyroid hormone insufficiency in vulnerable populations including pregnant women, other factors such as exposure to environmental contaminants have recently attracted increasing attention, in particular in interaction with iodine deficiency...
2018: Frontiers in Endocrinology
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