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Frontiers in Endocrinology

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https://www.readbyqxmd.com/read/28443067/remarks-on-the-prolactin-hypothesis-of-peripartum-cardiomyopathy
#1
Jakob Triebel, Carmen Clapp, Gonzalo Martínez de la Escalera, Thomas Bertsch
No abstract text is available yet for this article.
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28443066/judging-the-fertility-protective-effect-of-gnrh-agonists-in-chemotherapy-it-is-a-matter-of-perspective
#2
Michael von Wolff, Petra Stute
No abstract text is available yet for this article.
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28443065/hemoglobin-improved-protection-in-cultured-cerebral-cortical-astroglial-cells-inhibition-of-oxidative-stress-and-caspase-activation
#3
Fatma Amri, Ikram Ghouili, Marie-Christine Tonon, Mohamed Amri, Olfa Masmoudi-Kouki
Oxidative stress plays a major role in triggering astroglial cell death in diverse neuropathological conditions such as ischemia and neurodegenerative diseases. Numerous studies indicate that hemoglobin (Hb) is expressed in both resting and reactive glia cells, but nothing is known regarding a possible role of Hb on astroglial cell survival. Thus, the purpose of the present study was to investigate the potential glioprotective effect of Hb on hydrogen peroxide (H2O2)-induced oxidative stress and apoptosis in cultured rat astrocytes...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28443064/loss-of-vagal-sensitivity-to-cholecystokinin-in-rats-born-with-intrauterine-growth-retardation-and-consequence-on-food-intake
#4
Marième Ndjim, Camille Poinsignon, Patricia Parnet, Gwenola Le Dréan
Perinatal malnutrition is associated with low birth weight and an increased risk of developing metabolic syndrome in adulthood. Modification of food intake (FI) regulation was observed in adult rats born with intrauterine growth retardation induced by maternal dietary protein restriction during gestation and maintained restricted until weaning. Gastrointestinal peptides and particularly cholecystokinin (CCK) play a major role in short-term regulation of FI by relaying digestive signals to the hindbrain via the vagal afferent nerve (VAN)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28443063/on-the-molecular-evolution-of-leptin-leptin-receptor-and-endospanin
#5
Richard Lyle Londraville, Jeremy W Prokop, Robert Joel Duff, Qin Liu, Matthew Tuttle
Over a decade passed between Friedman's discovery of the mammalian leptin gene (1) and its cloning in fish (2) and amphibians (3). Since 2005, the concept of gene synteny conservation (vs. gene sequence homology) was instrumental in identifying leptin genes in dozens of species, and we now have leptin genes from all major classes of vertebrates. This database of LEP (leptin), LEPR (leptin receptor), and LEPROT (endospanin) genes has allowed protein structure modeling, stoichiometry predictions, and even functional predictions of leptin function for most vertebrate classes...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439258/diabetic-cardiomyopathy-an-immunometabolic-perspective
#6
REVIEW
Paras K Mishra, Wei Ying, Shyam Sundar Nandi, Gautam K Bandyopadhyay, Kaushik K Patel, Sushil K Mahata
The heart possesses a remarkable inherent capability to adapt itself to a wide array of genetic and extrinsic factors to maintain contractile function. Failure to sustain its compensatory responses results in cardiac dysfunction, leading to cardiomyopathy. Diabetic cardiomyopathy (DCM) is characterized by left ventricular hypertrophy and reduced diastolic function, with or without concurrent systolic dysfunction in the absence of hypertension and coronary artery disease. Changes in substrate metabolism, oxidative stress, endoplasmic reticulum stress, formation of extracellular matrix proteins, and advanced glycation end products constitute the early stage in DCM...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439257/high-resolution-recording-of-the-circadian-oscillator-in-primary-mouse-%C3%AE-and-%C3%AE-cell-culture
#7
Volodymyr Petrenko, Yvan Gosmain, Charna Dibner
Circadian clocks have been developed in evolution as an anticipatory mechanism allowing for adaptation to the constantly changing light environment due to rotation of the Earth. This mechanism is functional in all light-sensitive organisms. There is a considerable body of evidence on the tight connection between the circadian clock and most aspects of physiology and metabolism. Clocks, operative in the pancreatic islets, have caught particular attention in the last years due to recent reports on their critical roles in regulation of insulin secretion and etiology of type 2 diabetes...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439256/the-role-of-endocrine-g-protein-coupled-receptors-in-ovarian-cancer-progression
#8
REVIEW
Qingyu Zhang, Nadine Ellen Madden, Alice Sze Tsai Wong, Billy Kwok Chong Chow, Leo Tsz On Lee
Ovarian cancer is the seventh most common cancer in women and the most lethal gynecological cancer, causing over 151,000 deaths worldwide each year. Dysregulated production of endocrine hormones, known to have pluripotent effects on cell function through the activation of receptor signaling pathways, is believed to be a high-risk factor for ovarian cancer. An increasing body of evidence suggests that endocrine G protein-coupled receptors (GPCRs) are involved in the progression and metastasis of ovarian neoplasms...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439255/assessing-the-functional-role-of-leptin-in-energy-homeostasis-and-the-stress-response-in-vertebrates
#9
REVIEW
Courtney A Deck, Jamie L Honeycutt, Eugene Cheung, Hannah M Reynolds, Russell J Borski
Leptin is a pleiotropic hormone that plays a critical role in regulating appetite, energy metabolism, growth, stress, and immune function across vertebrate groups. In mammals, it has been classically described as an adipostat, relaying information regarding energy status to the brain. While retaining poor sequence conservation with mammalian leptins, teleostean leptins elicit a number of similar regulatory properties, although current evidence suggests that it does not function as an adipostat in this group of vertebrates...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439254/distinct-conformational-dynamics-of-three-g-protein-coupled-receptors-measured-using-flash-bret-biosensors
#10
Kyla Bourque, Darlaine Pétrin, Rory Sleno, Dominic Devost, Alice Zhang, Terence E Hébert
A number of studies have profiled G protein-coupled receptor (GPCR) conformation using fluorescent biaresenical hairpin binders (FlAsH) as acceptors for BRET or FRET. These conformation-sensitive biosensors allow reporting of movements occurring on the intracellular surface of a receptor to investigate mechanisms of receptor activation and function. Here, we generated eight FlAsH-BRET-based biosensors within the sequence of the β2-adrenergic receptor (β2AR) and compared agonist-induced responses to the angiotensin II receptor type I (AT1R) and the prostaglandin F2α receptor (FP)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28424661/gonadotropin-inhibitory-hormone-plays-roles-in-stress-induced-reproductive-dysfunction
#11
REVIEW
Takeshi Iwasa, Toshiya Matsuzaki, Kiyohito Yano, Minoru Irahara
Physical and psychological stressors suppress hypothalamic-pituitary-gonadal axis activity and sexual behavior and consequently induce reproductive dysfunction. Recently, it has been shown that gonadotropin-inhibitory hormone (GnIH), also called RFamide-related peptide 3 (RFRP) in mammals, which is a potent inhibitory regulator of gonadotropin-releasing hormone (GnRH) and gonadotropin, is involved in stress-induced reproductive dysfunction. GnIH/Rfrp (the gene coding RFRP-3) expression and activity are increased by psychological and immune stress, and this alteration suppresses GnRH and gonadotropin secretion...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28424660/ccl2-monocyte-chemoattractant-protein-1-and-parathyroid-hormone-action-on-bone
#12
REVIEW
Jawed Akhtar Siddiqui, Nicola C Partridge
Chemokines are small molecules that play a crucial role as chemoattractants for several cell types, and their components are associated with host immune responses and repair mechanisms. Chemokines selectively recruit monocytes, neutrophils, and lymphocytes and induce chemotaxis through the activation of G protein-coupled receptors. Two well-described chemokine families (CXC and CC) are known to regulate the localization and trafficking of immune cells in cases of injury, infection, and tumors. Monocyte chemoattractant protein 1 (MCP-1/CCL2) is one of the important chemokines from the CC family that controls migration and infiltration of monocytes/macrophages during inflammation...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28421037/lipid-processing-in-the-brain-a-key-regulator-of-systemic-metabolism
#13
REVIEW
Kimberley D Bruce, Andrea Zsombok, Robert H Eckel
Metabolic disorders, particularly aberrations in lipid homeostasis, such as obesity, type 2 diabetes mellitus, and hypertriglyceridemia often manifest together as the metabolic syndrome (MetS). Despite major advances in our understanding of the pathogenesis of these disorders, the prevalence of the MetS continues to rise. It is becoming increasingly apparent that intermediary metabolism within the central nervous system is a major contributor to the regulation of systemic metabolism. In particular, lipid metabolism within the brain is tightly regulated to maintain neuronal structure and function and may signal nutrient status to modulate metabolism in key peripheral tissues such as the liver...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28421036/genetics-of-thyroid-stimulating-hormone-receptor-relevance-for-autoimmune-thyroid-disease
#14
REVIEW
Mihaela Stefan, Larissa C Faustino
Production of thyroid-stimulating hormone receptor (TSHR) antibodies represents the hallmark of Graves' disease (GD) pathogenesis. Thus, for more than two decades the TSHR gene has been at the center of studies intended to elucidate its contribution to disease pathology. The advent of genome-wide association technology allowed to establish a strong association of the TSHR gene with GD. Subsequent fine-mapping studies narrowed the disease-susceptibility region to a 40 kb sequence in intron 1, where at least five GD-associated SNPs in tight linkage disequilibrium were identified...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28408900/the-thrombopoietin-receptor-structural-basis-of-traffic-and-activation-by-ligand-mutations-agonists-and-mutated-calreticulin
#15
REVIEW
Leila N Varghese, Jean-Philippe Defour, Christian Pecquet, Stefan N Constantinescu
A well-functioning hematopoietic system requires a certain robustness and flexibility to maintain appropriate quantities of functional mature blood cells, such as red blood cells and platelets. This review focuses on the cytokine receptor that plays a significant role in thrombopoiesis: the receptor for thrombopoietin (TPO-R; also known as MPL). Here, we survey the work to date to understand how this receptor functions at a molecular level throughout its lifecycle, from traffic to the cell surface, dimerization and binding cognate cytokine via its extracellular domain, through to its subsequent activation of associated Janus kinases and initiation of downstream signaling pathways, as well as the regulation of these processes...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28396653/reduced-hepatic-carcinoembryonic-antigen-related-cell-adhesion-molecule-1-level-in-obesity
#16
Garrett Heinrich, Harrison T Muturi, Khadijeh Rezaei, Qusai Y Al-Share, Anthony M DeAngelis, Thomas A Bowman, Hilda E Ghadieh, Simona S Ghanem, Deqiang Zhang, Robert S Garofalo, Lei Yin, Sonia M Najjar
Impairment of insulin clearance is being increasingly recognized as a critical step in the development of insulin resistance and metabolic disease. The carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) promotes insulin clearance. Null deletion or liver-specific inactivation of Ceacam1 in mice causes a defect in insulin clearance, insulin resistance, steatohepatitis, and visceral obesity. Immunohistological analysis revealed reduction of hepatic CEACAM1 in obese subjects with fatty liver disease...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28396652/using-routine-hemoglobin-a1c-testing-to-determine-the-glycemic-status-in-psychiatric-inpatients
#17
Pratyusha Naidu, Leonid Churilov, Alvin Kong, Richard Kanaan, Henry Wong, Arielle Van Mourik, Anthony Yao, Elizabeth Cornish, Mariam Hachem, Graeme K Hart, Elizabeth Owen-Jones, Raymond Robbins, Que Lam, Katherine Samaras, Jeffrey D Zajac, Elif I Ekinci
AIM: Using routine hemoglobin A1c (HbA1c) testing to describe the prevalence, characteristics, and length of stay (LOS) of psychiatry inpatients with type 2 diabetes compared to those with pre-diabetes and those without diabetes. METHODS: In this prospective observational study, all inpatients aged greater than 30 years admitted to the Austin Health Psychiatry Unit, a major tertiary hospital, affiliated with the University of Melbourne, between February 2014 and April 2015 had routine HbA1c testing as part of the Diabetes Discovery Initiative...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28392778/the-challenges-and-recommendations-for-gestational-diabetes-mellitus-care-in-india-a-review
#18
REVIEW
Suman Morampudi, Gayathri Balasubramanian, Arun Gowda, Behsad Zomorodi, Anand Shanthanagowd Patil
Gestational diabetes mellitus (GDM) is a primary concern in India affecting approximately five million women each year. Existing literature indicate that prediabetes and diabetes affect approximately six million births in India alone, of which 90% are due to GDM. Studies reveal that there is no consensus among physicians and health-care providers in India regarding management of GDM prepartum and postpartum despite available guidelines. Also, there is no consensus among physicians as to when a woman should undergo oral glucose tolerance test after delivery...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28386245/molecular-mechanisms-of-stem-progenitor-cell-maintenance-in-the-adrenal-cortex
#19
REVIEW
Antonio Marcondes Lerario, Isabella Finco, Christopher LaPensee, Gary Douglas Hammer
The adrenal cortex is characterized by three histologically and functionally distinct zones: the outermost zona glomerulosa (zG), the intermediate zona fasciculata, and the innermost zona reticularis. Important aspects of the physiology and maintenance of the adrenocortical stem/progenitor cells have emerged in the last few years. Studies have shown that the adrenocortical cells descend from a pool of progenitors that are localized in the subcapsular region of the zG. These cells continually undergo a process of centripetal displacement and differentiation, which is orchestrated by several paracrine and endocrine cues, including the pituitary-derived adrenocorticotrophic hormone, and angiotensin II...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28382019/transcriptome-analysis-showed-a-differential-signature-between-invasive-and-non-invasive-corticotrophinomas
#20
Leonardo Jose Tadeu de Araújo, Antonio Marcondes Lerario, Margaret de Castro, Clarissa Silva Martins, Marcello Delano Bronstein, Marcio Carlos Machado, Ericka Barbosa Trarbach, Maria Candida Barisson Villares Fragoso
ACTH-dependent hypercortisolism caused by a pituitary adenoma [Cushing's disease (CD)] is the most common cause of endogenous Cushing's syndrome. CD is often associated with several morbidities, including hypertension, diabetes, osteoporosis/bone fractures, secondary infections, and increased cardiovascular mortality. While the majority (≈80%) of the corticotrophinomas visible on pituitary magnetic resonance imaging are microadenomas (MICs, <10 mm of diameter), some tumors are macroadenomas (MACs, ≥10 mm) with increased growth potential and invasiveness, exceptionally exhibiting malignant demeanor...
2017: Frontiers in Endocrinology
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