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Frontiers in Endocrinology

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https://www.readbyqxmd.com/read/28533765/leptin-induces-mitosis-and-activates-the-canonical-wnt-%C3%AE-catenin-signaling-pathway-in-neurogenic-regions-of-xenopus-tadpole-brain
#1
Melissa Cui Bender, Christopher J Sifuentes, Robert J Denver
In addition to its well-known role as an adipostat in adult mammals, leptin has diverse physiological and developmental actions in vertebrates. Leptin has been shown to promote development of hypothalamic circuits and to induce mitosis in different brain areas of mammals. We investigated the ontogeny of leptin mRNA, leptin actions on cell proliferation in the brain, and gene expression in the preoptic area/hypothalamus of tadpoles of Xenopus laevis. The level of leptin mRNA was low in premetamorphic tadpoles, but increased strongly at the beginning of metamorphosis and peaked at metamorphic climax...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28529499/exercise-and-glycemic-control-focus-on-redox-homeostasis-and-redox-sensitive-protein-signaling
#2
REVIEW
Lewan Parker, Christopher S Shaw, Nigel K Stepto, Itamar Levinger
Physical inactivity, excess energy consumption, and obesity are associated with elevated systemic oxidative stress and the sustained activation of redox-sensitive stress-activated protein kinase (SAPK) and mitogen-activated protein kinase signaling pathways. Sustained SAPK activation leads to aberrant insulin signaling, impaired glycemic control, and the development and progression of cardiometabolic disease. Paradoxically, acute exercise transiently increases oxidative stress and SAPK signaling, yet postexercise glycemic control and skeletal muscle function are enhanced...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28522989/postpartum-mood-disorders-and-thyroid-autoimmunity
#3
Maria Le Donne, Carmela Mento, Salvatore Settineri, Alessandro Antonelli, Salvatore Benvenga
No abstract text is available yet for this article.
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28515711/the-impact-of-glucagon-like-peptide-1-on-bone-metabolism-and-its-possible-mechanisms
#4
REVIEW
Chenhe Zhao, Jing Liang, Yinqiu Yang, Mingxiang Yu, Xinhua Qu
The impact of antidiabetic drugs on bone metabolism is drawing increasing attention due to the discovery of a correlation between type 2 diabetes mellitus (T2DM) and osteoporosis. Glucagon-like peptide-1 (GLP-1) receptor agonists are a novel and promising class of drugs for T2DM, which may also have clinical applications in bone tissue disorders. This review examines the impact of GLP-1 on bone metabolism, including enhancement of bone mineral density and improvement of bone quality. However, the precise effect of GLP-1 on fracture risk has not been unambiguously defined...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28512448/the-potential-role-of-contraction-induced-myokines-in-the-regulation-of-metabolic-function-for-the-prevention-and-treatment-of-type-2-diabetes
#5
REVIEW
Brian P Carson
Skeletal muscle represents the largest organ in the body, comprises 36-42% of body weight, and has recently been recognized as having an endocrine function. Proteins expressed and released by muscle that have autocrine, paracrine, and endocrine bioactivities have been termed myokines. It is likely that muscle contraction represents the primary stimulus for the synthesis and secretion of myokines to enable communication with other organs such as the liver, adipose tissue, brain, and auto-regulation of muscle metabolism...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28512447/low-dose-pulsatile-interleukin-6-as-a-treatment-option-for-diabetic-peripheral-neuropathy
#6
REVIEW
April Ann Cox, Yves Sagot, Gael Hedou, Christina Grek, Travis Wilkes, Aaron I Vinik, Gautam Ghatnekar
Diabetic peripheral neuropathy (DPN) remains one of the most common and serious complications of diabetes. Currently, pharmacological agents are limited to treating the pain associated with DPN, and do not address the underlying pathological mechanisms driving nerve damage, thus leaving a significant unmet medical need. Interestingly, research conducted using exercise as a treatment for DPN has revealed interleukin-6 (IL-6) signaling to be associated with many positive benefits such as enhanced blood flow and lipid metabolism, decreased chronic inflammation, and peripheral nerve fiber regeneration...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28507534/stress-and-alterations-in-bones-an-interdisciplinary-perspective
#7
REVIEW
Pia-Maria Wippert, Michael Rector, Gisela Kuhn, Karin Wuertz-Kozak
Decades of research have demonstrated that physical stress (PS) stimulates bone remodeling and affects bone structure and function through complex mechanotransduction mechanisms. Recent research has laid ground to the hypothesis that mental stress (MS) also influences bone biology, eventually leading to osteoporosis and increased bone fracture risk. These effects are likely exerted by modulation of hypothalamic-pituitary-adrenal axis activity, resulting in an altered release of growth hormones, glucocorticoids and cytokines, as demonstrated in human and animal studies...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28507533/cytokine-receptor-endocytosis-new-kinase-activity-dependent-and-independent-roles-of-pi3k
#8
REVIEW
Ping-Hung Chen, Huiyu Yao, Lily Jun-Shen Huang
Type I and II cytokine receptors are cell surface sensors that bind cytokines in the extracellular environment and initiate intracellular signaling to control processes such as hematopoiesis, immune function, and cellular growth and development. One key mechanism that regulates signaling from cytokine receptors is through receptor endocytosis. In this mini-review, we describe recent advances in endocytic regulations of cytokine receptors, focusing on new paradigms by which PI3K controls receptor endocytosis through both kinase activity-dependent and -independent mechanisms...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28503166/inhibition-of-ectopic-arginine-vasopressin-production-by-phenytoin-in-the-small-cell-lung-cancer-cell-line-lu-165
#9
Takahiro Ohta, Mitsuo Mita, Shigeru Hishinuma, Reiko Ishii-Nozawa, Kazuhisa Takahashi, Masaru Shoji
Phenytoin, a voltage-gated sodium channel (NaV channel) antagonist, reportedly inhibits arginine vasopressin (AVP) release from an isolated rat neurohypophysis. So far, it is uncertain whether phenytoin has a direct action on ectopic AVP-producing neuroendocrine tumors. We studied the effect of phenytoin on the release of copeptin, the C-terminal fragment of pro-AVP, and expression of AVP gene in the human small cell lung cancer cell line Lu-165. Cells were maintained in RPMI1640 medium with 10% fetal bovine serum and were used within the fifth passage...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28503165/stress-related-and-circadian-secretion-and-target-tissue-actions-of-glucocorticoids-impact-on-health
#10
REVIEW
Nicolas C Nicolaides, Evangelia Charmandari, Tomoshige Kino, George P Chrousos
Living organisms are highly complex systems that must maintain a dynamic equilibrium or homeostasis that requires energy to be sustained. Stress is a state in which several extrinsic or intrinsic disturbing stimuli, the stressors, threaten, or are perceived as threatening, homeostasis. To achieve homeostasis against the stressors, organisms have developed a highly sophisticated system, the stress system, which provides neuroendocrine adaptive responses, to restore homeostasis. These responses must be appropriate in terms of size and/or duration; otherwise, they may sustain life but be associated with detrimental effects on numerous physiologic functions of the organism, leading to a state of disease-causing disturbed homeostasis or cacostasis...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28491052/receptor-mediated-melanoma-targeting-with-radiolabeled-%C3%AE-melanocyte-stimulating-hormone-relevance-of-the-net-charge-of-the-ligand
#11
Jean-Philippe Bapst, Alex N Eberle
A majority of melanotic and amelanotic melanomas overexpress melanocortin type 1 receptors (MC1Rs) for α-melanocyte-stimulating hormone. Radiolabeled linear or cyclic analogs of α-MSH have a great potential as diagnostic or therapeutic tools for the management of malignant melanoma. Compounds such as [(111)In]DOTA-NAP-amide exhibit high affinity for the MC1R in vitro, good tumor uptake in vivo, but they may suffer from relatively high kidney uptake and retention in vivo. We have shown previously that the introduction of negative charges into radiolabeled DOTA-NAP-amide peptide analogs may enhance their excretion and reduce kidney retention...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28491051/hashimoto-s-thyroiditis-and-autoimmune-gastritis
#12
REVIEW
Miriam Cellini, Maria Giulia Santaguida, Camilla Virili, Silvia Capriello, Nunzia Brusca, Lucilla Gargano, Marco Centanni
The term "thyrogastric syndrome" defines the association between autoimmune thyroid disease and chronic autoimmune gastritis (CAG), and it was first described in the early 1960s. More recently, this association has been included in polyglandular autoimmune syndrome type IIIb, in which autoimmune thyroiditis represents the pivotal disorder. Hashimoto's thyroiditis (HT) is the most frequent autoimmune disease, and it has been reported to be associated with gastric disorders in 10-40% of patients while about 40% of patients with autoimmune gastritis also present HT...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28487673/the-more-the-merrier-complexity-in-long-non-coding-rna-loci
#13
Christian Ziegler, Markus Kretz
No abstract text is available yet for this article.
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28487672/the-g-protein-coupled-receptor-ut-of-the-neuropeptide-urotensin-ii-displays-structural-and-functional-chemokine-features
#14
REVIEW
Hélène Castel, Laurence Desrues, Jane-Eileen Joubert, Marie-Christine Tonon, Laurent Prézeau, Marie Chabbert, Fabrice Morin, Pierrick Gandolfo
The urotensinergic system was previously considered as being linked to numerous physiopathological states, including atherosclerosis, heart failure, hypertension, pre-eclampsia, diabetes, renal disease, as well as brain vascular lesions. Thus, it turns out that the actions of the urotensin II (UII)/G protein-coupled receptor UT system in animal models are currently not predictive enough in regard to their effects in human clinical trials and that UII analogs, established to target UT, were not as beneficial as expected in pathological situations...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28484427/transcriptomes-of-the-premature-and-mature-ovaries-of-an-ascidian-ciona-intestinalis
#15
Tsuyoshi Kawada, Akira Shiraishi, Masato Aoyama, Honoo Satake
No abstract text is available yet for this article.
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28484426/structural-functional-features-of-the-thyrotropin-receptor-a-class-a-g-protein-coupled-receptor-at-work
#16
REVIEW
Gunnar Kleinau, Catherine L Worth, Annika Kreuchwig, Heike Biebermann, Patrick Marcinkowski, Patrick Scheerer, Gerd Krause
The thyroid-stimulating hormone receptor (TSHR) is a member of the glycoprotein hormone receptors, a sub-group of class A G-protein-coupled receptors (GPCRs). TSHR and its endogenous ligand thyrotropin (TSH) are of essential importance for growth and function of the thyroid gland and proper function of the TSH/TSHR system is pivotal for production and release of thyroid hormones. This receptor is also important with respect to pathophysiology, such as autoimmune (including ophthalmopathy) or non-autoimmune thyroid dysfunctions and cancer development...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28484425/protein-digestion-derived-peptides-and-the-peripheral-regulation-of-food-intake
#17
REVIEW
Juliette Caron, Dorothée Domenger, Pascal Dhulster, Rozenn Ravallec, Benoit Cudennec
The gut plays a central role in energy homeostasis. Food intake regulation strongly relies on the gut-brain axis, and numerous studies have pointed out the significant role played by gut hormones released from enteroendocrine cells. It is well known that digestive products of dietary protein possess a high satiating effect compared to carbohydrates and fat. Nevertheless, the processes occurring in the gut during protein digestion involved in the short-term regulation of food intake are still not totally unraveled...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28484424/continuous-subcutaneous-insulin-infusion-in-children-a-pilot-study-validating-a-protocol-to-avoid-hypoglycemia-at-initiation
#18
Despoina Manousaki, Johnny Deladoëy, Louis Geoffroy, Patricia Olivier
BACKGROUND: The occurrence of hypoglycemia and hyperglycemia during the first days after transition to continuous subcutaneous insulin infusion (CSII) in patients with type 1 diabetes has not been systematically studied in children. The aim of this prospective study was to demonstrate that the protocol applied in our diabetes clinic is safe at CSII initiation in children. METHODS: We assessed 22 pediatric patients with type 1 diabetes, using continuous glucose monitoring (CGM) before and after CSII initiation (±3 days)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28484423/evaluation-of-salivary-cytokines-for-diagnosis-of-both-trauma-induced-and-genetic-heterotopic-ossification
#19
Hsiao Hsin Sung Hsieh, Michael T Chung, Ronald M Allen, Kavitha Ranganathan, Joe Habbouche, David Cholok, Jonathan Butts, Arminder Kaura, Ramkumar Tiruvannamalai-Annamalai, Chris Breuler, Caitlin Priest, Shawn J Loder, John Li, Shuli Li, Jan Stegemann, Steven L Kunkel, Benjamin Levi
PURPOSE: Heterotopic ossification (HO) occurs in the setting of persistent systemic inflammation. The identification of reliable biomarkers can serve as an early diagnostic tool for HO, especially given the current lack of effective treatment strategies. Although serum biomarkers have great utility, they can be inappropriate or ineffective in traumatic acute injuries and in patients with fibrodysplasia ossificans progressiva (FOP). Therefore, the goal of this study is to profile the cytokines associated with HO using a different non-invasive source of biomarkers...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28473803/contemporary-medical-management-of-primary-hyperparathyroidism-a-systematic-review
#20
REVIEW
Julius Simoni Leere, Jesper Karmisholt, Maciej Robaczyk, Peter Vestergaard
INTRODUCTION: Primary hyperparathyroidism is increasingly an asymptomatic disease at diagnosis, but the recognized guidelines for management are based on evidence obtained from studies on patients with symptomatic disease, and surgery is not always indicated. Other patients are unable to undergo surgery, and thus a medical treatment is warranted. This systematic review provides an overview of the existing literature on contemporary pharmaceutical options available for the medical management of primary hyperparathyroidism...
2017: Frontiers in Endocrinology
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