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Growth Hormone & IGF Research

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https://www.readbyqxmd.com/read/28628810/gh-administration-decreases-subcutaneous-abdominal-adipocyte-size-in-men-with-abdominal-obesity
#1
Miriam A Bredella, Kalypso Karastergiou, Stijn A Bos, Anu V Gerweck, Martin Torriani, Susan K Fried, Karen K Miller
OBJECTIVE: To investigate the effects of short-term GH administration on abdominal subcutaneous adipocyte size and CT attenuation in men with abdominal obesity. DESIGN: 6-week, randomized, double-blind, placebo-controlled study of GH (starting dose 2μg/kg/d) vs placebo of 15 abdominally obese men (mean age: 34±6years; mean BMI: 37.7±6.1kg/m(2), mean IGF-1 SDS: -1.9±0.5) who underwent abdominal subcutaneous adipose tissue (SAT) aspirations to determine adipocyte size, CTs for body composition and measures of glucose tolerance at baseline and 6weeks...
June 12, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28595133/nonclinical-pharmacokinetic-and-pharmacodynamic-characterisation-of-somapacitan-a-reversible-non-covalent-albumin-binding-growth-hormone
#2
Peter Thygesen, Henrik Sune Andersen, Carsten Behrens, Johannes Josef Fels, Leif Nørskov-Lauritsen, Christian Rischel, Nils Langeland Johansen
OBJECTIVE: Somapacitan is an albumin-binding growth hormone derivative intended for once weekly administration, currently in clinical development for treatment of adult as well as juvenile GH deficiency. Nonclinical in vivo pharmacological characterisation of somapacitan was performed to support the clinical trials. Here we present the pharmacokinetic and pharmacodynamic effects of somapacitan in rats, minipigs, and cynomolgus monkeys. METHODS: Pharmacokinetic studies investigating exposure, absorption, clearance, and bioavailability after single intravenous (i...
May 24, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28544872/analysis-of-the-igf-system-in-milk-from-farm-animals-occurrence-regulation-and-biomarker-potential
#3
REVIEW
Zianka Meyer, Christine Höflich, Elisa Wirthgen, Sven Olm, Harald M Hammon, Andreas Hoeflich
IGFs and IGF-binding proteins (IGFBPs) are abundantly present in milk and in dairy products. Compared to the IGFs, the IGFBP have received less attention in milk, although truncated IGFBPs and IGFBP-glycosylation have been described in milk. Thereby, complex control of local IGF-effects can be assumed on the levels of IGFBPs, proteases, and protease inhibitors. The present review collects the current knowledge both on presence and regulation of IGFs and IGFBPs in milk particularly from dairy animal species...
May 12, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28551577/bioactive-growth-hormone-in-older-men-and-women-it-s-relationship-to-immune-markers-and-healthspan
#4
William J Kraemer, Mary J Kennett, Andrea M Mastro, Roger J McCarter, Connie J Rogers, William H DuPont, Shawn D Flanagan, William J Turbitt, Maren S Fragala, Emily M Post, Wesley C Hymer
OBJECTIVE: The consequences of age-related decline in the somatotropic axis of humans are complex and remain largely unresolved. We tested the hypothesis that hGH measurements of plasma by bioassay vs immunoassay from samples obtained from free-living, elderly individuals would reveal a dichotomy in GH activities that are correlated with the functional status of the donors, i.e. their healthspan. DESIGN: Forty-one men and women of advanced age (men: N=16, age, 80...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28514721/impact-of-gh-administration-on-athletic-performance-in-healthy-young-adults-a-systematic-review-and-meta-analysis-of-placebo-controlled-trials
#5
REVIEW
Kasper Hermansen, Mads Bengtsen, Michael Kjær, Peter Vestergaard, Jens Otto Lunde Jørgensen
OBJECTIVE: Illicit use of growth hormone (GH) as a performance-enhancing drug among athletes is prevalent, although the evidence of such effects in healthy, young subjects is sparse. We therefore performed a meta-analysis of published studies on the effect of GH administration on body composition, substrate metabolism, and athletic performance in healthy, young subjects. DESIGN: The English-language based databases PubMed, EMBASE, and Cochrane Central Register of Controlled Trials were searched, and eligible articles were reviewed in accordance with the PRISMA guidelines...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28511077/clinical-and-laboratory-parameters-predicting-a-requirement-for-the-reevaluation-of-growth-hormone-status-during-growth-hormone-treatment-retesting-early-in-the-course-of-gh-treatment
#6
Dogus Vuralli, E Nazli Gonc, Z Alev Ozon, Ayfer Alikasifoglu, Nurgun Kandemir
OBJECTIVE: We aimed to define the predictive criteria, in the form of specific clinical, hormonal and radiological parameters, for children with growth hormone deficiency (GHD) who may benefit from the reevaluation of GH status early in the course of growth hormone (GH) treatment. DESIGN AND METHODS: Two hundred sixty-five children with growth hormone deficiency were retested by GH stimulation at the end of the first year of GH treatment. The initial clinical and laboratory characteristics of those with a normal (GH≥10ng/ml) response and those with a subnormal (GH<10ng/ml) response were compared to predict a normal GH status during reassessment...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28500996/professor-kerstin-hall-1929-1917-pioneer-in-the-field-of-growth-hormone-and-igf-research
#7
LETTER
Moira S Lewitt, Anna-Lena Hulting
No abstract text is available yet for this article.
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28482270/metabolic-differences-between-short-children-with-gh-peak-levels-in-the-lower-normal-range-and-healthy-children-of-normal-height
#8
Anders Tidblad, Jan Gustafsson, Claude Marcus, Martin Ritzén, Klas Ekström
OBJECTIVE: Severe growth hormone deficiency (GHD) leads to several metabolic effects in the body ranging from abnormal body composition to biochemical disturbances. However, less is known regarding these parameters in short children with GH peak levels in the lower normal range during provocation tests. Our aim was to study the metabolic profile of this group and compare it with that of healthy children of normal height. DESIGN: Thirty-five pre-pubertal short children (<-2...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28482269/skeletal-growth-and-bone-mineral-acquisition-in-type-1-diabetic-children-abnormalities-of-the-gh-igf-1-axis
#9
REVIEW
Manish Raisingani, Brar Preneet, Brenda Kohn, Shoshana Yakar
Type 1 diabetes mellitus (T1DM) is one of the most common chronic diseases diagnosed in childhood. Childhood and adolescent years are also the most important period for growth in height and acquisition of skeletal bone mineral density (BMD). The growth hormone (GH)/insulin like growth factor -1 (IGF-1) axis which regulates growth, is affected by T1DM, with studies showing increased GH and decreased IGF-1 levels in children with T1DM. There is conflicting data as to whether adolescents with TIDM are able to achieve their genetically-determined adult height...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28456063/ocular-findings-in-adult-subjects-with-an-inactivating-mutation-in-gh-releasing-hormone-receptor-gene
#10
Augusto C N Faro, Virginia M Pereira-Gurgel, Roberto Salvatori, Viviane C Campos, Gustavo B Melo, Francielle T Oliveira, Alecia A Oliveira-Santos, Carla R P Oliveira, Francisco A Pereira, Ann Hellström, Luís A Oliveira-Neto, Eugenia H O Valença, Manuel H Aguiar-Oliveira
OBJECTIVE: Ocular function is fundamental for environmental adaptation and survival capacity. Growth factors are necessary for a mature eyeball, needed for adequate vision. However, the consequences of the deficiency of circulating growth hormone (GH) and its effector insulin-like growth factor I (IGF-I) on the physical aspects of the human eye are still debated. A model of untreated isolated GH deficiency (IGHD), with low but measurable serum GH, may clarify this issue. The aim of this study was to assess the ocular aspects of adult IGHD individuals who have never received GH therapy...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28427039/low-dose-growth-hormone-treatment-in-infants-and-toddlers-with-prader-willi-syndrome-is-comparable-to-higher-dosage-regimens
#11
Elly Scheermeyer, Mark Harris, Ian Hughes, Patricia A Crock, Geoffrey Ambler, Charles F Verge, Phil Bergman, George Werther, Maria E Craig, Catherine S Choong, Peter S W Davies
OBJECTIVE: Evaluate benefit and risk of low dose growth hormone treatment (GHT, 4.5mg/m(2)/week) in very young children with Prader-Willi Syndrome (PWS). DESIGN: Prospective longitudinal clinical intervention. METHODS: We evaluated 31 infants (aged 2-12months) and 42 toddlers (13-24months) from the PWS-OZGROW database for height, weight and BMI using the World Health Organization standard deviation scores (SDSWHO) and PWS specific BMI (SDSPWS), bone age, insulin-like growth factor 1 (IGF-I) levels and adverse events over 3years of GHT...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28372721/vitamin-d-across-growth-hormone-gh-disorders-from-gh-deficiency-to-gh-excess
#12
REVIEW
A Ciresi, C Giordano
The interplay between vitamin D and the growth hormone (GH)/insulin-like growth factor (IGF)-I system is very complex and to date it is not fully understood. GH directly regulates renal 1 alpha-hydroxylase activity, although the action of GH in modulating vitamin D metabolism may also be IGF-I mediated. On the other hand, vitamin D increases circulating IGF-I and the vitamin D deficiency should be normalized before measurement of IGF-I concentrations to obtain reliable and unbiased IGF-I values. Indeed, linear growth after treatment of nutritional vitamin D deficiency seems to be mediated through activation of the GH/IGF-I axis and it suggests an important role of vitamin D as a link between the proliferating cartilage cells of the growth plate and GH/IGF-I secretion...
April 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28129571/investigation-of-igf2-igfbp2-and-p63-proteins-in-rhabdomyosarcoma-tumors
#13
Yongbo Yu, Libing Fu, Shen Wang, Yaqiong Jin, Shujing Han, Ping Chu, Jie Lu, Yongli Guo, Lejian He, Xin Ni
Many efforts have been made to address involvement of the insulin-like growth-factor (IGF) pathway in rhabdomyosarcoma (RMS) pathogenesis, but the actual role of IGF in RMS is still controversial. OBJECTIVE: To investigate the implications of IGF2, IGFBP2 and p63 in RMS, and further explored their potential interaction. DESIGN: A total of 114 specimens of RMS along with clinic-pathologic characteristics were collected from the year of 2003 to 2013. Protein abundance was detected by immunohistochemical staining, potential relationships between protein levels and clinic-pathological parameters were applied using correlation analysis...
April 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28258988/serum-igf-1-igfbp-3-levels-and-circulating-tumor-cells-ctcs-in-early-breast-cancer-patients
#14
Georgios Z Papadakis, Dimitrios Mavroudis, Vasilios Georgoulias, John Souglakos, Athanasios K Alegakis, George Samonis, Ulas Bagci, Antonis Makrigiannakis, Odysseas Zoras
OBJECTIVE: Insulin-like growth factor (IGF)-axis is involved in human oncogenesis and metastasis development for various solid tumors including breast cancer. Aim of this study was to assess the association between IGF-1, IGF-binding protein-3 (IGFBP-3) serum levels and the presence of circulating tumor cells (CTCs) in the peripheral blood of women diagnosed with early breast cancer (EBC), before and after adjuvant chemotherapy. DESIGN: 171 patients with early-stage breast adenocarcinomas were retrospectively evaluated...
February 16, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28214503/editorial
#15
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
February 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28017505/endurance-training-induced-changes-in-the-gh-igf-i-axis-influence-maximal-muscle-strength-in-previously-untrained-men
#16
Marcin Grandys, Joanna Majerczak, Piotr Kuczek, Krystyna Sztefko, Krzysztof Duda, Jerzy A Zoladz
OBJECTIVE: In this study we have determined the effects of 20weeks of endurance running training on the GH-IGF-I axis changes in the context of the skeletal muscle performance and physical capacity level. DESIGN: Before and after the endurance training program a maximal incremental exercise tests, a 1500m race and a muscle strength measurements were performed and the blood samples were taken to determine both resting as well as end-exercise serum growth hormone (GH), insulin-like growth hormone-I (IGF-I), insulin-like growth hormone binding protein-3 (IGFBP-3) and plasma interleukin-6 (IL-6) concentrations...
February 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/27726925/the-effect-of-hmb-ingestion-on-the-igf-i-and-igf-binding-protein-response-to-high-intensity-military-training
#17
Michael J Redd, Jay R Hoffman, Yftach Gepner, Jeffrey R Stout, Mattan W Hoffman, Daniel Ben-Dov, Shany Funk, David D Church, Guy Avital, Yacov Chen, Hagai Frankel, Ishay Ostfeld
OBJECTIVE: Insulin-like growth factor-I (IGF-I) is a metabolic and anabolic biomarker that has been proposed to reflect physiological adaptations resulting from multistressor environments. The bioactivity of IGF-I is regulated by seven different insulin-like growth factor binding proteins (IGFBPs) which act not only as carriers of IGF-1, but also function as a modulator of IGF-I availability and activity. Supplementing with β-hydroxy-β-methylbutyrate (HMB) has been shown to enhance physiological outcomes associated with intense training, and has been reported to augment the IGF-1 response...
February 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/27693042/a-summary-of-the-influence-of-exogenous-estrogen-administration-across-the-lifespan-on-the-gh-igf-1-axis-and-implications-for-bone-health
#18
REVIEW
Emily A Southmayd, Mary Jane De Souza
Bone growth, development, and remodeling are modulated by numerous circulating hormones. Throughout the lifespan, the extent to which each of the hormones impacts bone differs. Understanding the independent and combined impact of these hormones on controlling bone remodeling allows for the development of more informed decision making regarding pharmacology, specifically the use of hormonal medication, at all ages. Endocrine control of bone health in women is largely dictated by the growth hormone (GH)/insulin-like growth factor-1 (IGF-1) axis and the hypothalamic-pituitary-ovarian (HPO) axis...
February 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28157571/cortistatin-a-new-link-between-the-growth-hormone-prolactin-axis-stress-and-metabolism
#19
REVIEW
Alejandro Ibáñez-Costa, Raúl M Luque, Justo P Castaño
Cortistatin is a neuropeptide originally identified in cortical brain regions, which displays a high structural and functional homology with somatostatin. However, cortistatin possesses distinct, unique functions, in the immune and central nervous systems, and it also shows specific endocrine effects, particularly on pituitary growth hormone, prolactin and adrenocorticotropin axes. Somatostatin and cortistatin bind similarly to the five native somatostatin receptors, sst1-sst5, whereas both compounds bind differentially to the recently discovered truncated variants of the sst subtype 5 (sst5TMD4, sst5TMD5); moreover, only cortistatin is able to bind other non-sst receptors (GHS-R and MrgX2)...
January 22, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28110155/first-in-man-study-with-a-novel-pegylated-recombinant-human-insulin-like-growth-factor-i
#20
H Kletzl, A Guenther, A Höflich, C Höflich, J Frystyk, R F Staack, E Schick, C Wandel, N Bleich, F Metzger
OBJECTIVE: This study is a first time assessment of safety and tolerability, pharmacokinetics, and pharmacodynamics of RO5046013 in human, in comparison with unmodified rhIGF-I. DESIGN: The study was conducted as a single-center, randomized, double-blinded, placebo-controlled, single ascending dose, parallel group study in a clinical research unit in France. A total of 62 healthy volunteers participated in this clinical trial. RO5046013 was given as single subcutaneous injection, or as intravenous infusion over 48h, at ascending dose levels...
January 10, 2017: Growth Hormone & IGF Research
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