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https://www.readbyqxmd.com/read/28915901/possible-effects-of-an-early-diagnosis-and-treatment-in-patients-with-growth-hormone-deficiency-the-state-of-art
#1
REVIEW
Stefano Stagi, Perla Scalini, Giovanni Farello, Alberto Verrotti
Growth hormone deficiency (GHD) is a relatively uncommon and heterogeneous endocrine disorder presenting in childhood with short stature. However, during the neonatal period, the metabolic effects of GHD may to require prompt replacement therapy to avoid possible life-threatening complications. An increasing amount of data suggests the importance of an early diagnosis and treatment of GHD because of its auxological, metabolic, and neurodevelopmental features with respect to the patients diagnosed and treated later in life...
September 16, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28748371/acute-effects-of-heated-resistance-exercise-in-female-and-male-power-athletes
#2
Julia R Casadio, Adam G Storey, Fabrice Merien, Andrew E Kilding, James D Cotter, Paul B Laursen
PURPOSE: To determine the effects of heated resistance exercise on thermal strain, neuromuscular function and hormonal responses in power athletes. METHODS: Sixteen (n = 8 female; 8 male) highly trained power athletes completed a combined strength and power resistance exercise session in hot (HOT ~30 °C) and temperate (CON ~20 °C) conditions. Human growth hormone (hGH), cortisol and testosterone concentrations in plasma, peak power (counter-movement jump, CMJ) and peak force (isometric mid-thigh pull) were measured before and after each training session; thermoregulatory responses were monitored during training...
July 26, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28730965/efficient-non-invasive-plasmid-dna-administration-into-tibialis-cranialis-muscle-of-little-mice
#3
C R Cecchi, E Higuti, E R Lima, D P Vieira, P L Squair, C N Peroni, P Bartolini
An alternative treatment for growth hormone deficiency based on hGH-DNA administration, followed by electro gene transfer, was investigated by injecting the plasmid into surgically exposed or non-exposed quadriceps or tibialis muscle of immunodeficient "little" mice. Previously optimized electrotransfer conditions were also improved via a new combination of high/low voltage pulses: after 3 days, serum hGH was determined. Both groups exhibited similar results: 5.0 ± 2.2 (SD) and 3.5 ± 0.9 ng hGH/ml (P>0...
July 21, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28659813/human-peritoneal-mesothelial-cell-death-induced-by-high-glucose-hypertonic-solution-involves-ca-2-and-na-ions-and-oxidative-stress-with-the-participation-of-pkc-nox2-and-pi3k-akt-pathways
#4
Felipe Simon, Pablo Tapia, Ricardo Armisen, Cesar Echeverria, Sebastian Gatica, Alejandro Vallejos, Alejandro Pacheco, Maria E Sanhueza, Miriam Alvo, Erico Segovia, Rubén Torres
Chronic peritoneal dialysis (PD) therapy is equally efficient as hemodialysis while providing greater patient comfort and mobility. Therefore, PD is the treatment of choice for several types of renal patients. During PD, a high-glucose hyperosmotic (HGH) solution is administered into the peritoneal cavity to generate an osmotic gradient that promotes water and solutes transport from peritoneal blood to the dialysis solution. Unfortunately, PD has been associated with a loss of peritoneal viability and function through the generation of a severe inflammatory state that induces human peritoneal mesothelial cell (HPMC) death...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28656605/somapacitan-a-once-weekly-reversible-albumin-binding-gh-derivative-in-children-with-gh-deficiency-a-randomized-dose-escalation-trial
#5
Tadej Battelino, Michael Højby Rasmussen, Jean De Schepper, Nehama Zuckerman-Levin, Zoran Gucev, Lars Sävendahl
OBJECTIVE: To evaluate the safety, local tolerability, pharmacodynamics and pharmacokinetics of escalating single doses of once-weekly somapacitan, a reversible, albumin-binding GH derivative, vs once-daily GH in children with GH deficiency (GHD). DESIGN: Phase 1, randomized, open-label, active-controlled, dose-escalation trial (NCT01973244). PATIENTS: Thirty-two prepubertal GH-treated children with GHD were sequentially randomized 3:1 within each of four cohorts to a single dose of somapacitan (0...
June 28, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28617312/autocrine-human-growth-hormone-promotes-invasive-and-cancer-stem-cell-like-behavior-of-hepatocellular-carcinoma-cells-by-stat3-dependent-inhibition-of-claudin-1-expression
#6
Yi-Jun Chen, Ming-Liang You, Qing-Yun Chong, Vijay Pandey, Qiu-Shi Zhuang, Dong-Xu Liu, Lan Ma, Tao Zhu, Peter E Lobie
Despite progress in diagnosis and treatment of hepatocellular carcinoma (HCC), the clinical outcome is still unsatisfactory. Increased expression of human growth hormone (hGH) in HCC has been reported and is associated with poor survival outcome in HCC patients. Herein, we investigated the mechanism of the oncogenic effects of hGH in HCC cell lines. In vitro functional assays demonstrated that forced expression of hGH in these HCC cell lines promoted cell proliferation, cell survival, anchorage-independent growth, cell migration, and invasion, as previously reported...
June 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28595133/nonclinical-pharmacokinetic-and-pharmacodynamic-characterisation-of-somapacitan-a-reversible-non-covalent-albumin-binding-growth-hormone
#7
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/28551577/bioactive-growth-hormone-in-older-men-and-women-it-s-relationship-to-immune-markers-and-healthspan
#8
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/28546545/extensive-phenotypic-characterization-of-a-new-transgenic-mouse-reveals-pleiotropic-perturbations-in-physiology-due-to-mesenchymal-hgh-minigene-expression
#9
Aimilios Kaklamanos, Jan Rozman, Manolis Roulis, Niki Karagianni, Maria Armaka, Moya Wu, Laura Brachthäuser, Julia Calzada-Wack, Marion Horsch, Johannes Beckers, Birgit Rathkolb, Thure Adler, Frauke Neff, Eckhard Wolf, Valerie Gailus-Durner, Helmut Fuchs, Martin Hrabe de Angelis, George Kollias
The human growth hormone (hGH) minigene used for transgene stabilization in mice has been recently identified to be locally expressed in the tissues where transgenes are active and associated with phenotypic alterations. Here we extend these findings by analyzing the effect of the hGH minigene in TgC6hp55 transgenic mice which express the human TNFR1 under the control of the mesenchymal cell-specific CollagenVI promoter. These mice displayed a fully penetrant phenotype characterized by growth enhancement accompanied by perturbations in metabolic, skeletal, histological and other physiological parameters...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28525404/growth-hormone-treatment-for-growth-hormone-deficiency-and-idiopathic-short-stature-new-guidelines-shaped-by-the-presence-and-absence-of-evidence
#10
Adda Grimberg, David B Allen
PURPOSE OF REVIEW: The Pediatric Endocrine Society recently published new guidelines for the use of human growth hormone (hGH) and human insulin-like growth factor-I (hIGF-I) treatment for growth hormone deficiency, idiopathic short stature, and primary IGF-I deficiency in children and adolescents. This review places the new guidelines in historical contexts of the life cycle of hGH and the evolution of US health care, and highlights their future implications. RECENT FINDINGS: The new hGH guidelines, the first to be created by the Grading of Recommendations Assessment, Development and Evaluation approach, are more conservative than their predecessors...
August 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28399519/pharmacokinetic-and-pharmacodynamic-modeling-of-mod-4023-a-long-acting-human-growth-hormone-in-growth-hormone-deficiency-children
#11
Dennis M Fisher, Ron G Rosenfeld, Michal Jaron-Mendelson, Leanne Amitzi, Ronit Koren, Gili Hart
BACKGROUND/AIMS: MOD-4023 is a long-acting human growth hormone (hGH) in clinical trials for the treatment of growth hormone deficiency (GHD). A key goal is maintenance of serum concentrations of insulin-like growth factor (IGF) 1 within normal range throughout GH dosing. The study aimed to develop a pharmacokinetic model for MOD-4023 and a pharmacodynamic model for the effect of MOD-4023 on IGF-1 to allow estimation of peak and mean IGF-1 and to identify the optimal IGF-1 sampling day...
2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28323965/long-acting-c-terminal-peptide-modified-hgh-mod-4023-results-of-a-safety-and-dose-finding-study-in-ghd-children
#12
RANDOMIZED CONTROLLED TRIAL
Nataliya Zelinska, Violeta Iotova, Julia Skorodok, Oleg Malievsky, Valentina Peterkova, Lubov Samsonova, Ron G Rosenfeld, Zvi Zadik, Michal Jaron-Mendelson, Ronit Koren, Leanne Amitzi, Dmitri Raduk, Oren Hershkovitz, Gili Hart
Context: Daily injections are required for growth hormone (GH) replacement therapy, which may cause low compliance as a result of inconvenience and distress in patients. Objective: C-terminal peptide-modified human GH (MOD-4023) is developed for once-a-week dosing regimen in GH-deficient (GHD) adults and children. The present trial was a safety and dose-finding study for weekly MOD-4023 in GHD children. Design: A multicenter, open-label, randomized, controlled phase 2 study in children with GHD, evaluating the safety, tolerability, pharmacokinetics/pharmacodynamics, and efficacy of three different weekly MOD-4023 doses, compared with daily recombinant human GH (r-hGH)...
May 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28321676/transdermal-delivery-of-human-growth-hormone-via-laser-generated-micropores
#13
Yang Song, Karishma Hemmady, Ashana Puri, Ajay K Banga
The epidermal skin barrier plays an important role in protecting underlying structures. It allows the passage of low molecular weight lipophilic molecules, but restricts the passage of hydrophilic molecules and macromolecules. The objective of this study was to investigate the feasibility of transdermal delivery of human growth hormone (hGH) through laser-microporated dermatomed porcine ear skin. The permeation of hGH was evaluated at different laser fluences and micropore densities. In vitro permeation studies were performed on vertical Franz diffusion cells using dermatomed porcine ear skin treated with ablative laser (2940 nm; P...
March 20, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28253515/growth-promotion-ethics-and-the-challenge-to-resist-cosmetic-endocrinology%C3%A2
#14
David B Allen
The advancement of "human growth hormone (hGH)-for-height" - increasing height attainment in children short for reasons other than GH deficiency - arose from intuitive, deep-seated assumptions about the disability of short stature, its improvement with hGH-mediated height gain, and the safety of escalating dosages of hGH in healthy children. Evidence challenging these assumptions now strengthens criticism of hGH-for-height as cosmetic endocrinology. To counter this characterization, collective acceptance of guidelines is needed that advise nontreatment of the vast majority of short children, support strategies that minimize treatment duration and dosage, and restrain enhancement of normal adult stature...
2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28099130/epidermal-growth-factor-receptor-egfr-involvement-in-successful-growth-hormone-gh-signaling-in-gh-transduction-defect
#15
COMPARATIVE STUDY
Eirini Kostopoulou, Andrea Paola Rojas-Gil, Alexia Karvela, Bessie E Spiliotis
BACKGROUND: Growth hormone (GH) transduction defect (GHTD) is a growth disorder with impaired signal transducer and activator of transcription 3 (STAT3) phosphorylation mediated by overexpression of cytokine-inducible SH2-containing protein (CIS), which causes increased growth hormone receptor (GHR) degradation. This study investigated the role of epidermal growth factor (EGF) in the restoration of normal GH signaling in GHTD. METHODS: Protein expression, cellular localization and physical contact of proteins of the GH and EGF signaling pathways were studied by Western immunoblotting, immunofluorescence and co-immunoprecipitation, respectively...
February 1, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/27923197/single-chain-fc-dimer-human-growth-hormone-fusion-protein-for-improved-drug-delivery
#16
Li Zhou, Hsuan-Yao Wang, Shanshan Tong, Curtis T Okamoto, Wei-Chiang Shen, Jennica L Zaro
Fc fusion protein technology has been successfully used to generate long-acting forms of several protein therapeutics. In this study, a novel Fc-based drug carrier, single chain Fc-dimer (sc(Fc)2), was designed to contain two Fc domains recombinantly linked via a flexible linker. Since the Fc dimeric structure is maintained through the flexible linker, the hinge region was omitted to further stabilize it against proteolysis and reduce FcγR-related effector functions. The resultant sc(Fc)2 candidate preserved the neonatal Fc receptor (FcRn) binding...
February 2017: Biomaterials
https://www.readbyqxmd.com/read/27920886/evaluation-of-recombinant-human-growth-hormone-secretion-in-e-coli-using-the-l-asparaginase-ii-signal-peptide
#17
Mozhdeh Zamani, Navid Nezafat, Younes Ghasemi
BACKGROUND: In the recent years, there has been an increasing interest in secretory production of recombinant proteins, due to its various advantages compared with intracellular expression. Signal peptides play a critical role in prosperous secretion of recombinant proteins. Accordingly, different signal peptides have been assessed for their ability to produce secretory proteins by trial-and-error experiments. The aim of this study was to evaluate the effect of L-asparaginase II signal peptide on the recombinant human Growth Hormone (hGH) protein secretion in the Escherichia coli (E...
October 2016: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/27713394/effect-of-growth-hormone-and-igg-aggregates-on-dendritic-cells-activation-and-t-cells-polarization
#18
Yann Gallais, Natacha Szely, François-Xavier Legrand, Arnaud Leroy, Marc Pallardy, Isabelle Turbica
Patients treated with therapeutic biological products (BP) frequently develop anti-drug antibodies (ADA) with potential neutralizing capacities leading to loss of clinical response or serious side effects. BP aggregates have been suggested to promote immunogenicity, thus enhancing ADA production. Dendritic cells (DC) are key effectors in T-cell and B-cell fates, and the subsequent generation of immunogenicity. The objective of this work was to determine if BP aggregates can participate to DC maturation and T-cell activation...
March 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/27670405/unexpected-effects-of-the-mip-creer-transgene-and-tamoxifen-on-%C3%AE-cell-growth-in-c57bl6-j-male-mice
#19
Bethany A Carboneau, Thao D V Le, Jennifer C Dunn, Maureen Gannon
Transgenic mouse models have been fundamental in the discovery of factors that regulate β-cell development, mass, and function. Several groups have recently shown that some of these models display previously uncharacterized phenotypes due to the transgenic system itself. These include impaired islet function and increased β-cell mass due to the presence of a human growth hormone (hGH) minigene as well as impaired β-cell proliferation in response to tamoxifen (TM) administration. We aimed to determine how these systems impact β-cell mass and proliferation during high fat diet (HFD)...
September 2016: Physiological Reports
https://www.readbyqxmd.com/read/27665368/preparation-of-soluble-isotopically-labeled-human-growth-hormone-produced-in-escherichia-coli
#20
Jin-Hee Lee, Ji-Seon Jeong, Sook-Kyung Kim, Jimyeong Song, Ji Youn Lee, Soyun Baek, Jun-Hyuk Choi
Isotopically labeled proteins have been used as internal standards for mass spectrometry (MS)-based absolute protein quantification. Although this approach can provide highly accurate analyses of proteins of interest within a complex mixture, one of the major limitations of this method is the difficulty in preparing uniformly labeled standards. Human growth hormone (hGH) is one of the most important hormones that circulate throughout the body, and its measurement is primarily of interest in the diagnosis and treatment of growth disorders...
November 1, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
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