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Growth Hormone AND IGF-1

Greisa Vila, Anton Luger
Growth hormone (GH) is not approved for use during conception and pregnancy. Nevertheless, data from the clinical care practice reveal that most women concieve on GH replacement therapy (GHRT), and more than half continue on GHRT also during pregnancy. GH stimulates the hypothalamic-pituitary-gonadal axis at all levels, and there is evidence that GH deficiency impacts the morphology of reproductive organs, onset of puberty, ovarian function and fertility. Patients with hypopituitarism often conceive using assisted reproductive techniques and several studies support the benefit of GH supplementation for achieving fertility in women with growth hormone deficiency...
March 8, 2018: Minerva Endocrinologica
Maryam Razzaghy-Azar, Mitra Nourbakhsh, Mona Nourbakhsh
BACKGROUND: Cyproheptadine HCl (CyproH) is an appetite stimulating drug and while it was prescribed for a patient with growth hormone insensitivity syndrome (GHIS) for increasing appetite, his height growth was surprisingly increased. Therefore the aim of this study was to investigate the effect of CyproH on growth parameters of the patients with GHIS. PATIENTS AND DESIGN: Twenty patients were enrolled in two prospective cohorts at two different times. Fifteen cases were observed for 1...
March 9, 2018: Clinical Endocrinology
Matthias K Auer, Mareike R Stieg, Alexander Crispin, Caroline Sievers, Günter K Stalla, Anna Kopczak
BACKGROUND: Empty sella is the neuroradiological or pathological finding of an apparently empty sella turcica containing no pituitary tissue. The prevalence of primary empty sella, i.e., empty sella without any discernible cause, is not precisely known; estimates range from 2% to 20%. Technical advances in neuroradiology have made empty sella an increasingly common incidental finding. It remains unclear whether, and to what extent, asymptomatic adult patients with an incidentally discovered empty sella should undergo diagnostic testing for hormonal disturbances...
February 16, 2018: Deutsches Ärzteblatt International
Marie-José Lecomte, Chloé Bertolus, Nélina Ramanantsoa, Françoise Saurini, Jacques Callebert, Catherine Sénamaud-Beaufort, Maud Ringot, Thomas Bourgeois, Boris Matrot, Corinne Collet, Jeannette Nardelli, Jacques Mallet, Guilan Vodjdani, Jorge Gallego, Jean-Marie Launay, Sylvie Berrard
Pituitary growth hormone (GH) and insulin-like growth factor-1 (IGF-1) are anabolic hormones whose physiological roles are particularly important during development. The activity of the GH/IGF-1 axis is controlled by complex neuroendocrine systems including two hypothalamic neuropeptides, GH-releasing hormone (GHRH) and somatostatin (SRIF), and a gastrointestinal hormone, ghrelin. The neurotransmitter acetylcholine (ACh) is involved in tuning GH secretion, and its GH-stimulatory action has mainly been shown in adults but is not clearly documented during development...
March 2, 2018: Endocrinology
Tao Qiu, Janet L Crane, Liang Xie, Lingling Xian, Hui Xie, Xu Cao
Parathyroid hormone (PTH) regulates bone remodeling by activating PTH type 1 receptor (PTH1R) in osteoblasts/osteocytes. Insulin-like growth factor type 1 (IGF-1) stimulates mesenchymal stem cell differentiation to osteoblasts. However, little is known about the signaling mechanisms that regulates the osteoblast-to-osteocyte transition. Here we report that PTH and IGF-I synergistically enhance osteoblast-to-osteocyte differentiation. We identified that a specific tyrosine residue, Y494, on the cytoplasmic domain of PTH1R can be phosphorylated by insulin-like growth factor type I receptor (IGF1R) in vitro...
2018: Bone Research
Elena Roca, Pier Paolo Mattogno, Teresa Porcelli, Luigi Poliani, Francesco Belotti, Alberto Schreiber, Filippo Maffezzoni, Marco Maria Fontanella, Francesco Doglietto
INTRODUCTION: Plurihormonal adenomas (PHA) represent 10-15% of all functioning pituitary adenomas. The most frequent hormonal association is represented by prolactin and growth hormone (GH). AIM: To describe a rare case of functional ACTH and GH microadenoma, together with a systematic literature review on PHA. METHODS: PubMed was searched using the terms "plurihormonal pituitary adenoma", "ACTH, GH pituitary adenoma", and "Acromegaly AND Cushing's disease"...
February 28, 2018: World Neurosurgery
John M McCarthy, Bonnie M McCann-Crosby, Megan E Rech, Jiani Yin, Chun-An Chen, May A Ali, HaiThuy N Nguyen, Jennifer L Miller, Christian P Schaaf
BACKGROUND: Nonsense and frameshift mutations in the maternally imprinted, paternally expressed gene MAGEL2, located in the Prader-Willi critical region 15q11-15q13, have been reported to cause Schaaf-Yang syndrome (SYS), a genetic disorder that manifests as developmental delay/intellectual disability, hypotonia, feeding difficulties and autism spectrum disorder. Prader-Willi syndrome (PWS) is a genetic disorder characterised by severe infantile hypotonia, hypogonadotrophic hypogonadism, early childhood onset obesity/hyperphagia, developmental delay/intellectual disability and short stature...
March 1, 2018: Journal of Medical Genetics
Gulab Chandra, Anjali Aggarwal, Muneendra Kumar, Anil Kumar Singh
Thirty-two advanced pregnant multiparous Sahiwal cows were used to study the effect of additional zinc (Zn) and vitamin E (VE) supplementation on hormonal and biochemical changes. Cows were randomly assigned to four groups and fed a basal diet of compounded concentrate, berseem fodder, and wheat straw in a ratio of 60:20:20. The groups were: (1) the basal diet with no supplement (control treatment); (2) the basal diet supplemented with 60 mg/kg DM/cow daily of Zn (Zn treatment); (3) the basal diet supplemented with 1000 IU/cow daily of vitamin E (VE treatment); and (4) the basal diet supplemented with a combination of 60 mg Zn/kg DM/cow and 1000 IU vitamin E/cow/d (Zn + VE treatment)...
February 21, 2018: Journal of Trace Elements in Medicine and Biology
Timothy B Legare, Oteni Hamilton, Sarah Dhannoon, Sayed Ali
Non-islet cell tumor hypoglycemia (NICTH) is a rare paraneoplastic condition caused most commonly by metastatic mesenchymal tumors. A 74-year-old non-diabetic male with an eight-year history of metastatic sarcomatoid lung cancer presented with altered mental status. His previous treatment included a lobectomy and radiation. Laboratory investigations were significant for blood glucose of 28 mg/dL, confirming hypoglycemia. He was hypokalemic, a condition seen in approximately 50% of patients with NICTH, at 2...
December 20, 2017: Curēus
Lachlan Mitchell, Gary Slater, Daniel Hackett, Nathan Johnson, Helen O'Connor
This study aimed to describe the body composition and physiological changes which take place during the in-season and recovery periods of a group of natural bodybuilders. Natural male bodybuilders (n = 9) were assessed 16 (PRE16), 8 (PRE8), and 1 (PRE1) week(s) before, and 4 (POST4) weeks after a bodybuilding competition. Assessments included body composition, resting metabolic rate (RMR), serum hormones, and 7-day weighed food and training diaries. Change in parameters was assessed using repeated-measures analysis of variance...
March 1, 2018: European Journal of Sport Science
Antonino Belfiore, Roberta Malaguarnera, Maria Luisa Nicolosi, Rosamaria Lappano, Marco Ragusa, Andrea Morrione, Veronica Vella
In the last decades increasing importance has been attributed to the Insulin/Insulin-like Growth Factor signaling (IIGFs) in cancer development, progression and resistance to therapy. In fact, IIGFs is often deregulated in cancer. In particular, the mitogenic insulin receptor isoform A (IR-A) and the insulin-like growth factor receptor (IGF-1R) are frequently overexpressed in cancer together with their cognate ligands IGF-1 and IGF-2. Recently, we identified discoidin domain receptor 1 (DDR1) as a new IR-A interacting protein...
February 28, 2018: Cell Adhesion & Migration
Honghao Yu, Weihu Long, Xuezeng Zhang, Kaixiang Xu, Jianxiong Guo, Heng Zhao, Honghui Li, Yubo Qing, Weirong Pan, Baoyu Jia, Hong-Ye Zhao, Xingxu Huang, Hong-Jiang Wei
BACKGROUND: Laron syndrome is an autosomal disease resulting from mutations in the growth hormone receptor (GHR) gene. The only therapeutic treatment for Laron syndrome is recombinant insulin-like growth factor I (IGF-I), which has been shown to have various side effects. The improved Laron syndrome models are important for better understanding the pathogenesis of the disease and developing corresponding therapeutics. Pigs have become attractive biomedical models for human condition due to similarities in anatomy, physiology, and metabolism relative to humans, which could serve as an appropriate model for Laron syndrome...
February 27, 2018: Journal of Translational Medicine
Masanori Yonenaga, Shingo Fujio, Mika Habu, Hiroshi Arimura, Takaaki Hiwatari, Shunichi Tanaka, Yasuyuki Kinoshita, Hiroshi Hosoyama, Hirofumi Hirano, Kazunori Arita
The criteria for surgical cure of acromegaly have become more stringent during the past decades and a change from Cortina to new consensus criteria has recently been proposed. However, the superiority of the new consensus over Cortina criteria with respect to postoperative metabolic parameters remains to be ascertained. We retrospectively assessed metabolic parameters, the body habitus, and other health-related parameters of 48 patients with surgically controlled acromegaly who met the Cortina criteria [normalized insulin-like growth factor-1 (IGF-1) level and nadir growth hormone (GH) level <1...
February 23, 2018: Neurologia Medico-chirurgica
Alexandra M V Wennberg, Clinton E Hagen, Ronald C Petersen, Michelle M Mielke
Insulin-like growth factor 1 (IGF-1) has been associated with osteoporosis, cardiovascular disease, cancer, neurodegenerative diseases, and mortality in middle and older aged adults. Cross-sectionally, IGF-1 decreases with age and levels of IGF-1 are markedly different between individuals. However, little is known about intra-individual trajectories of IGF-1. We examined baseline and serial measures of plasma total IGF-1, IGF binding protein (IGFBP)-3, and their ratio, which is a proxy for bioavailable IGF-1, among 1618 adults, aged 50-95, enrolled in the Mayo Clinic Study of Aging...
February 20, 2018: Experimental Gerontology
L E Copes, H Schutz, E M Dlugsoz, S Judex, T Garland
OBJECTIVES: To use a mouse model to investigate the relationships among the components of the systemic robusticity hypothesis (SRH): voluntary exercise on wheels, spontaneous physical activity (SPA) in cages, growth hormones, and skeletal robusticity, especially cranial vault thickness (CVT). MATERIALS AND METHODS: Fifty female mice from lines artificially selected for high running (HR) and 50 from nonselected control (C) lines were housed in cages with (Active) or without wheels (Sedentary)...
February 23, 2018: American Journal of Physical Anthropology
Jéssica Tatiana Morales Piñeyrúa, Santiago Rafael Fariña, Alejandro Mendoza
The objective of this study was to determine the effects that parity may have on production, reproduction and the metabolic status of Holstein cows managed in a production system based on total mixed ration and pasture. Primiparous (n = 22) and multiparous (n = 24) cows from a dairy farm research station in Uruguay were used in a completely randomized design. Body weight (BW), body condition score (BCS) and backfat thickness (BFT) were recorded weekly from -30 to 70 days postpartum. Milk production was measured daily, and milk composition was determined weekly...
February 2, 2018: Animal Reproduction Science
L D'Attilio, A Díaz, R D V Fernández, B Bongiovanni, N Santucci, G Dídoli, S Lioi, W Gardeñez, J L Naninni, A Del Rey, H Besedovsky, O Bottasso, M L Bay
BACKGROUND: Tuberculosis (TB) is a major health problem worldwide. In TB, the immune and central nervous systems modulate each other. The two main components of this network are the hypothalamic-pituitary-adrenal axis (HPA) and autonomic nervous system (ANS). OBJECTIVE: To elucidate neuro-endocrine-immune (NEI) interactions in pulmonary (PTB) or pleural (PLTB) TB, we analysed the relationship among compounds from these systems. METHODS: We quantified levels of catecholamines, hormones and cytokines in plasma from patients with PTB (n = 46) or PLTB (n = 12) and controls (n = 32), and in the pleural fluid from PLTB patients...
March 1, 2018: International Journal of Tuberculosis and Lung Disease
Alon Eliakim
The Pediatric Exercise Science "Year That Was" section aims to highlight the most important (to the author's opinion) manuscripts that were published in 2017 in the field of endocrinology and pediatric exercise science. This year's selection includes studies showing that 1) in pubertal swimmers, there is a decrease in insulin-like growth factor-1 (IGF-I) and IGF-binding protein-3 (IGFBP-3) during intense training (a catabolic-type hormonal response) with an anabolic "rebound" characterized by a significant increase of these growth factors during training tapering down...
February 22, 2018: Pediatric Exercise Science
Emrah Altindis, Weikang Cai, Masaji Sakaguchi, Fa Zhang, Wang GuoXiao, Fa Liu, Pierre De Meyts, Vasily Gelfanov, Hui Pan, Richard DiMarchi, C Ronald Kahn
Viruses are the most abundant biological entities and carry a wide variety of genetic material, including the ability to encode host-like proteins. Here we show that viruses carry sequences with significant homology to several human peptide hormones including insulin, insulin-like growth factors (IGF)-1 and -2, FGF-19 and -21, endothelin-1, inhibin, adiponectin, and resistin. Among the strongest homologies were those for four viral insulin/IGF-1-like peptides (VILPs), each encoded by a different member of the family Iridoviridae VILPs show up to 50% homology to human insulin/IGF-1, contain all critical cysteine residues, and are predicted to form similar 3D structures...
March 6, 2018: Proceedings of the National Academy of Sciences of the United States of America
Yuning Sun, Rongfeng Xu, Jia Huang, Yuyu Yao, Xiaodong Pan, Zhongpu Chen, Genshan Ma
BACKGROUND: C-kit-positive cardiac stem cells (CSCs) have been shown to be a promising candidate treatment for myocardial infarction and heart failure. Insulin-like growth factor (IGF)-1 is an anabolic growth hormone that regulates cellular proliferation, differentiation, senescence, and death in various tissues. Although IGF-1 promotes the migration and proliferation of c-kit-positive mouse CSCs, the underlying mechanism remains unclear. METHODS: Cells were isolated from adult mouse hearts, and c-kit-positive CSCs were separated using magnetic beads...
February 21, 2018: Stem Cell Research & Therapy
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