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Herodes M, Le N, Anderson LJ, Migula D, Miranda G, Paulsen L, Garcia JM. Metabolic and quality of life effects of growth hormone replacement in patients with TBI and AGHD: A pilot study. Growth Horm IGF Res 2023; 71:101544. [PMID: 37295336 PMCID: PMC10527000 DOI: 10.1016/j.ghir.2023.101544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023]
Abstract
OBJECTIVE Traumatic brain injury (TBI), a common cause of adult growth hormone deficiency (AGHD), affects 20% of Veterans returning from Iraq and Afghanistan (OEF/OIF/OND). Growth hormone replacement therapy (GHRT) improves quality of life (QoL) in AGHD but remains unexplored in this population. This pilot, observational study investigates the feasibility and efficacy of GHRT in AGHD following TBI. DESIGN In this 6-month study of combat Veterans with AGHD and TBI starting GHRT (N = 7), feasibility (completion rate and rhGH adherence) and efficacy (improvements in self-reported QoL) of GHRT were measured (primary outcomes). Secondary outcomes included body composition, physical and cognitive function, psychological and somatic symptoms, physical activity, IGF-1 levels and safety parameters. It was hypothesized that participants would adhere to GHRT and that QoL would significantly improve after six months. RESULTS Five subjects (71%) completed all study visits. All patients administered daily rhGH injections, 6 (86%) of whom consistently administered the clinically-prescribed dose. While QoL demonstrated numeric improvement, this change did not reach statistical significance (p = 0.17). Significant improvements were observed in total lean mass (p = 0.02), latissimus dorsi strength (p = 0.05), verbal learning (Trial 1, p = 0.02; Trial 5, p = 0.03), attention (p = 0.02), short-term memory (p = 0.04), and post-traumatic stress disorder (PTSD) symptoms (p = 0.03). Body weight (p = 0.02) and total fat mass (p = 0.03) increased significantly. CONCLUSION GHRT is a feasible and well-tolerated intervention for U.S. Veterans with TBI-related AGHD. It improved key areas impacted by AGHD and symptoms of PTSD. Larger, placebo-controlled studies testing the efficacy and safety of this intervention in this population are warranted.
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Affiliation(s)
- Megan Herodes
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA; Division of Gerontology and Geriatric Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Nancy Le
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Lindsey J Anderson
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Dorota Migula
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Gary Miranda
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA; Division of Gerontology and Geriatric Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Lauren Paulsen
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Jose M Garcia
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA; Division of Gerontology and Geriatric Medicine, University of Washington School of Medicine, Seattle, WA, USA.
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Baioccato V, Quinto G, Rovai S, Conte F, Dassie F, Neunhäeuserer D, Vecchiato M, Palermi S, Gasperetti A, Bullo V, Camozzi V, Vettor R, Ermolao A, Mioni R. Do Androgenic Pattern, Insulin State and Growth Hormone Affect Cardiorespiratory Fitness and Strength in Young Women with PCOS? Biomedicines 2022; 10:biomedicines10092176. [PMID: 36140277 PMCID: PMC9496105 DOI: 10.3390/biomedicines10092176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022] Open
Abstract
In this study, cardiorespiratory fitness (CRF) and strength level were assessed in women with and without polycystic ovary syndrome (PCOS), matched for age, body composition, androgenic pattern and insulinemic pattern. Patients with and without PCOS were evaluated at the Endocrinology Unit and Sport Medicine Division to assess endocrinological (insulinemic, androgenic pattern and growth hormone), anthropometric (with DEXA) and functional parameters (with cardiopulmonary exercise test and handgrip test), as well as physical activity level (with the Global Physical Activity Questionnaire). A total of 31 patients with PCOS and 13 controls were included. No statistically significant differences were found between groups in terms of age, body mass index, body composition, androgenic pattern, insulin state, growth hormone and physical activity level. The PCOS group demonstrated significantly better cardiorespiratory fitness (VO2max per kg (30.9 ± 7.6 vs. 24.8 ± 4.1 mL/kg/min; p = 0.010), VO2max per kg of fat-free mass (52.4 ± 8.9 vs. 45.3 ± 6.2 mL/kg/min; p = 0.018)), strength levels (handgrip per kg (0.36 ± 0.09 vs. 0.30 ± 0.08; p = 0.009), handgrip per kg of fat-free mass (13.03 ± 2.32 vs. 11.50 ± 1.91; p = 0.001)) and exercise capacity (METs at test (14.4 ± 2.72 vs. 12.5 ± 1.72 METs; p = 0.019)). In this study, women with PCOS showed a better cardiorespiratory fitness and strength than the control group. The only determinant that could explain the differences observed seems to be the presence of the syndrome itself. These results suggest that PCOS per se does not limit exercise capacity and does not exclude good functional capacity.
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Affiliation(s)
- Veronica Baioccato
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
- Correspondence: (V.B.); (G.Q.); (M.V.)
| | - Giulia Quinto
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
- Correspondence: (V.B.); (G.Q.); (M.V.)
| | - Sara Rovai
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
| | - Francesca Conte
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
| | - Francesca Dassie
- Department of Medicine, Clinica Medica 3, Azienda Ospedaliera Padova, University of Padova, 35122 Padova, Italy
| | - Daniel Neunhäeuserer
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
| | - Marco Vecchiato
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
- Correspondence: (V.B.); (G.Q.); (M.V.)
| | - Stefano Palermi
- Public Health Department, University of Naples Federico II, 80138 Naples, Italy
| | - Andrea Gasperetti
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
| | - Valentina Bullo
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
| | - Valentina Camozzi
- Endocrinology Division, Department of Medicine, Padova University Hospital, 35128 Padova, Italy
| | - Roberto Vettor
- Department of Medicine, Clinica Medica 3, Azienda Ospedaliera Padova, University of Padova, 35122 Padova, Italy
| | - Andrea Ermolao
- Sport and Exercise Medicine Division, Department of Medicine, Padova University Hospital, Regional Centre for Exercise Prescription in Chronic Diseases, 35128 Veneto, Italy
| | - Roberto Mioni
- Department of Medicine, Clinica Medica 3, Azienda Ospedaliera Padova, University of Padova, 35122 Padova, Italy
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Abstract
The metabolic actions of growth hormone (GH) last a lifetime and involve several physiological functions associated with the control of body composition, energy metabolism, water regulation, immune response, cardiovascular performance, physical and mental work. Adult patients with GH deficiency (GHD) present a constellation of clinical findings, which include increased total and visceral body fat, low bone and muscle mass, reduced muscle strength, impaired anaerobic physical capacity, unfavorable cardiovascular profile, and poor quality of life. Recombinant human GH (rhGH) therapy has been proved to reverse or improve many abnormalities associated with GHD in adult life, but the therapeutic response is highly variable among patients and influenced by multiple factors, which are the main focus of this narrative review. Given the individual sensitivity of adult GHD patients to rhGH replacement, dose regimens evolved from weight-based to individualized dose-titration strategies, which improved efficacy and reduced the frequency of adverse events. Individual tailoring and maintenance doses of rhGH are mainly influenced by age, age at GHD onset, sex, body mass index, baseline GH status, quality of life and other pituitary hormone replacements. In addition, genetic background and poor adherence due to patient or product-related factors might play a role in the responsiveness to rhGH therapy. There have been attempts to develop predictive mathematical models to distinguish good and poor responders to rhGH therapy, but thus far none of them have been prospectively tested and validated in a large cohort of adult GHD individuals.
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Affiliation(s)
- Cesar Luiz Boguszewski
- SEMPR, Serviço de Endocrinologia e Metabologia, Departamento de Clínica Médica, Hospital de Clínicas da Universidade Federal do Paraná, Agostinho Leão Junior 285, Curitiba, PR, 80030-110, Brazil.
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Garmes HM, Boguszewski CL, Miranda PAC, Martins MRA, da Silva SRC, Abucham JZ, de Castro Musolino NR, Vilar L, Portari LHC, Gadelha MR, Kasuki L, Naves LA, Czepielewski MA, de Almeida TS, Duarte FHG, Glezer A, Bronstein MD. Management of hypopituitarism: a perspective from the Brazilian Society of Endocrinology and Metabolism. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2021; 65:212-230. [PMID: 33905631 PMCID: PMC10065316 DOI: 10.20945/2359-3997000000335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Hypopituitarism is a disorder characterized by insufficient secretion of one or more pituitary hormones. New etiologies of hypopituitarism have been recently described, including head trauma, cerebral hemorrhage, and drug-induced hypophysitis. The investigation of patients with these new disorders, in addition to advances in diagnosis and treatment of hypopituitarism, has increased the prevalence of this condition. Pituitary hormone deficiencies can induce significant clinical changes with consequent increased morbidity and mortality rates, while hormone replacement based on current guidelines protects these patients. In this review, we will first discuss the different etiologies of hypopituitarism and then address one by one the clinical aspects, diagnostic evaluation, and therapeutic options for deficiencies of TSH, ACTH, gonadotropin, and GH. Finally, we will detail the hormonal interactions that occur during replacement of pituitary hormones.
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Affiliation(s)
- Heraldo Mendes Garmes
- Unidade de Neuroendocrinologia, Divisão de Endocrinologia e Metabologia, Departamento de Clínica Médica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brasil,
| | - César Luiz Boguszewski
- Serviço de Endocrinologia e Metabologia, Departamento de Clínica Médica, Universidade Federal do Paraná (SEMPR), Curitiba, PR, Brasil,
| | | | | | - Silvia Regina Correa da Silva
- Unidade de Neuroendocrinologia, Divisão de Endocrinologia e Metabolismo, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Julio Zaki Abucham
- Unidade de Neuroendocrinologia, Divisão de Endocrinologia e Metabolismo, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Nina Rosa de Castro Musolino
- Unidade de Neuroendocrinologia, Divisão de Neurocirurgia Funcional, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, DP, Brasil
| | - Lucio Vilar
- Serviço de Endocrinologia, Hospital das Clínicas da Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - Luiz Henrique Corrêa Portari
- Unidade de Neuroendocrinologia, Divisão de Endocrinologia e Metabolismo, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brasil
| | - Mônica Roberto Gadelha
- Unidade de Neuroendocrinologia, Instituto Estadual do Cérebro Paulo Niemeyer, Centro de Pesquisa de Neuroendocrinologia, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Leandro Kasuki
- Unidade de Neuroendocrinologia, Instituto Estadual do Cérebro Paulo Niemeyer, Centro de Pesquisa de Neuroendocrinologia, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Luciana Ansaneli Naves
- Serviço de Endocrinologia, Faculdade de Medicina da Universidade de Brasília, Brasília, DF, Brasil
| | - Mauro Antônio Czepielewski
- Serviço de Endocrinologia, Hospital de Clínicas de Porto Alegre; Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - Tobias Skrebsky de Almeida
- Serviço de Endocrinologia, Hospital de Clínicas de Porto Alegre; Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | | | - Andrea Glezer
- Unidade de Neuroendocrinologia, Laboratório de Endocrinologia Celular e Molecular LIM-25, Divisão de Endocrinologia e Metabolismo, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
| | - Marcello Delano Bronstein
- Unidade de Neuroendocrinologia, Laboratório de Endocrinologia Celular e Molecular LIM-25, Divisão de Endocrinologia e Metabolismo, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
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Mizera Ł, Halupczok-Żyła J, Kolačkov K, Zembska A, Grzegrzółka J, Jędrzejuk D, Bolanowski M, Daroszewski J. Myokines in Acromegaly: An Altered Irisin Profile. Front Endocrinol (Lausanne) 2021; 12:728734. [PMID: 34795636 PMCID: PMC8593228 DOI: 10.3389/fendo.2021.728734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/13/2021] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION The muscle is an endocrine organ controlling metabolic homeostasis. Irisin and myostatin are key myokines mediating this process. Acromegaly is a chronic disease with a wide spectrum of complications, including metabolic disturbances. PURPOSE To examine the influence of acromegaly on irisin and myostatin secretion and their contribution to metabolic profile and body composition. MATERIALS AND METHODS In 43 patients with acromegaly and 60 controls, serum levels of irisin, myostatin, growth hormone (GH), insulin-like growth factor 1 (IGF-1), parameters of glucose, and lipid metabolism were determined. Body composition was assessed with dual-energy x-ray absorptiometry. RESULTS The irisin concentration was significantly lower in patients with acromegaly compared to controls (3.91 vs. 5.09 μg/ml, p = 0.006). There were no correlations between irisin and GH/IGF-1 levels. In the study group, irisin was negatively correlated with fasting insulin (r = -0.367; p = 0.042), HOMA-IR (r = -0.510; p = 0.011), and atherogenic factors: Castelli I (r = -0.416; p = 0.005), Castelli II (r = -0.400; p = 0.001), and atherogenic coefficient (AC) (r = -0.417; p = 0.05). Irisin and myostatin concentrations were also lower in acromegalics with insulin resistance than without (2.80 vs. 4.18 μg/ml, p = 0.047; 81.46 vs. 429.58 ng/L, p = 0.018, respectively). There were no differences between study group and controls in myostatin concentration. Myostatin levels negatively correlated with GH (r = -0.306; p = 0.049), HOMA-IR (r = -0.046; p = 0.411), and insulin levels (r = -0.429; p = 0.016). CONCLUSIONS Decreased irisin concentrations in acromegaly may suggest impaired hormonal muscle function contributing to metabolic complications in this disorder. However, learning more about the association between myostatin and GH in acromegaly requires further studies. Nevertheless, it appears that myostatin is not critical for muscle mass regulation in acromegaly.
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Affiliation(s)
- Łukasz Mizera
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
| | - Jowita Halupczok-Żyła
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
- *Correspondence: Jowita Halupczok-Żyła,
| | - Katarzyna Kolačkov
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
| | - Agnieszka Zembska
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
| | - Jędrzej Grzegrzółka
- Department of Histology and Embryology, Wrocław Medical University, Wrocław, Poland
| | - Diana Jędrzejuk
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
| | - Marek Bolanowski
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
| | - Jacek Daroszewski
- Department of Endocrinology, Diabetes and Isotope Therapy, Wrocław Medical University, Wrocław, Poland
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Heaton AL, Kelly C, Rood J, Tam CS, Greenway FL. Mechanism for the Increase in Human Growth Hormone with Administration of a Novel Test Supplement and Results Indicating Improved Physical Fitness and Sleep Efficiency. J Med Food 2020; 24:653-659. [PMID: 33030391 DOI: 10.1089/jmf.2020.0109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
An oral test supplement increases serum human growth hormone (hGH) levels after acute administration in healthy adults. We investigated the mechanism for the increase in hGH and the effect of continued daily administration of the test supplement on measures of physical fitness and sleep efficiency. In Study 1, serum triiodothyronine (T3) was measured in samples from a prior placebo-controlled, double-blind study in which 16 healthy participants received both placebo and the test supplement in a crossover design; treatment order was randomized, and treatments were separated by a 1-week washout. In Study 2, physical fitness (VO2 max) was measured at baseline and after 2 weeks of daily administration of the test supplement (N = 12 healthy participants). Study 3 assessed daily sleep onset latency and time awake during 3 weeks of daily administration of the test supplement (N = 15 healthy participants). A fall from baseline in T3 was observed with placebo (-6.1 ± 8.5 ng/dL, P = .01). Of note, the change in T3 was smaller with the test supplement (-3.3 ± 10.7 ng/dL, P = not significant) but was not statistically different from placebo. Mean VO2 max increased by 6% from baseline after 2 weeks (P = .02). Sleep-onset latency and time awake during the night were reduced from baseline to week 3 by 22% and 65%, respectively (P = .01 and P = .02). The conservation of T3 levels suggests that the mechanism for increased hGH secretion by the test supplement is through somatostatin inhibition. Furthermore, pilot studies indicated that daily administration of the supplement improved physical fitness and sleep efficiency from baseline, effects consistent with increased endogenous hGH release. Clinical Trial Registration No. NCT02987868.
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Affiliation(s)
- Amy L Heaton
- Pennington Biomedical Research Center, LSU System, Baton Rouge, Louisiana, USA.,Sierra Research Group, LLC, Salt Lake City, Utah, USA
| | - Colleen Kelly
- Kelly Statistical Consulting, Carlsbad, California, USA
| | - Jennifer Rood
- Pennington Biomedical Research Center, LSU System, Baton Rouge, Louisiana, USA
| | - Charmaine S Tam
- Pennington Biomedical Research Center, LSU System, Baton Rouge, Louisiana, USA
| | - Frank L Greenway
- Pennington Biomedical Research Center, LSU System, Baton Rouge, Louisiana, USA
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He X, Barkan AL. Growth hormone therapy in adults with growth hormone deficiency: a critical assessment of the literature. Pituitary 2020; 23:294-306. [PMID: 32060708 DOI: 10.1007/s11102-020-01031-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE Growth hormone (GH) therapy has been studied as treatment for clinical manifestations of adult-onset growth hormone deficiency (AO-GHD), including cardiovascular risk, bone health, and quality of life. Patients with AO-GHD typically also have significant history of pituitary pathology and hypopituitarism, which raises the question of what proportion of their clinical presentation can be attributed to GHD alone. Currently, much of the existing data for GH therapy in AO-GHD come from uncontrolled retrospective studies and observational protocols. These considerations require careful reassessment of the role of GH as a therapeutic agent in adult patients with hypopituitarism. METHODS We contrast results from placebo-controlled trials with those from uncontrolled and retrospective studies for GH replacement in patients with hypopituitarism. We also examine the evidence for the manifestations of AO-GHD being attributed to GHD alone, as well as the data on adults with congenital, life-long untreated isolated GHD. RESULTS The evidence for increased morbidity and mortality in hypopituitary patients with GHD, and for the benefits of GH therapy, are conflicting. There remains the possibility that the described clinical manifestations of AO-GHD may not be due to GHD alone, but may also be related to underlying pituitary pathology, treatment history and suboptimal hormone replacement. CONCLUSIONS In the setting of inconsistent data on the benefits of GH therapy, treatment of AO-GHD remains an individualized decision. There is a need for more randomized, placebo-controlled studies to evaluate the long-term outcomes of GH therapy in adults with hypopituitarism.
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Affiliation(s)
- Xin He
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan, Domino's Farms, Lobby G, Suite 1500, 24 Frank Lloyd Wright Drive, Ann Arbor, MI, 48106, USA
| | - Ariel L Barkan
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan, Domino's Farms, Lobby G, Suite 1500, 24 Frank Lloyd Wright Drive, Ann Arbor, MI, 48106, USA.
- Department of Neurosurgery, University of Michigan, 1500 E Medical Center Drive, Ann Arbor, MI, 48109, USA.
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Yuen KCJ, Biller BMK, Radovick S, Carmichael JD, Jasim S, Pantalone KM, Hoffman AR. AMERICAN ASSOCIATION OF CLINICAL ENDOCRINOLOGISTS AND AMERICAN COLLEGE OF ENDOCRINOLOGY GUIDELINES FOR MANAGEMENT OF GROWTH HORMONE DEFICIENCY IN ADULTS AND PATIENTS TRANSITIONING FROM PEDIATRIC TO ADULT CARE. Endocr Pract 2019; 25:1191-1232. [PMID: 31760824 DOI: 10.4158/gl-2019-0405] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective: The development of these guidelines is sponsored by the American Association of Clinical Endocrinologists (AACE) Board of Directors and American College of Endocrinology (ACE) Board of Trustees and adheres with published AACE protocols for the standardized production of clinical practice guidelines (CPG). Methods: Recommendations are based on diligent reviews of clinical evidence with transparent incorporation of subjective factors, according to established AACE/ACE guidelines for guidelines protocols. Results: The Executive Summary of this 2019 updated guideline contains 58 numbered recommendations: 12 are Grade A (21%), 19 are Grade B (33%), 21 are Grade C (36%), and 6 are Grade D (10%). These detailed, evidence-based recommendations allow for nuance-based clinical decision-making that addresses multiple aspects of real-world care of patients. The evidence base presented in the subsequent Appendix provides relevant supporting information for the Executive Summary recommendations. This update contains 357 citations of which 51 (14%) are evidence level (EL) 1 (strong), 168 (47%) are EL 2 (intermediate), 61 (17%) are EL 3 (weak), and 77 (22%) are EL 4 (no clinical evidence). Conclusion: This CPG is a practical tool that practicing endocrinologists and regulatory bodies can refer to regarding the identification, diagnosis, and treatment of adults and patients transitioning from pediatric to adult-care services with growth hormone deficiency (GHD). It provides guidelines on assessment, screening, diagnostic testing, and treatment recommendations for a range of individuals with various causes of adult GHD. The recommendations emphasize the importance of considering testing patients with a reasonable level of clinical suspicion of GHD using appropriate growth hormone (GH) cut-points for various GH-stimulation tests to accurately diagnose adult GHD, and to exercise caution interpreting serum GH and insulin-like growth factor-1 (IGF-1) levels, as various GH and IGF-1 assays are used to support treatment decisions. The intention to treat often requires sound clinical judgment and careful assessment of the benefits and risks specific to each individual patient. Unapproved uses of GH, long-term safety, and the current status of long-acting GH preparations are also discussed in this document. LAY ABSTRACT This updated guideline provides evidence-based recommendations regarding the identification, screening, assessment, diagnosis, and treatment for a range of individuals with various causes of adult growth-hormone deficiency (GHD) and patients with childhood-onset GHD transitioning to adult care. The update summarizes the most current knowledge about the accuracy of available GH-stimulation tests, safety of recombinant human GH (rhGH) replacement, unapproved uses of rhGH related to sports and aging, and new developments such as long-acting GH preparations that use a variety of technologies to prolong GH action. Recommendations offer a framework for physicians to manage patients with GHD effectively during transition to adult care and adulthood. Establishing a correct diagnosis is essential before consideration of replacement therapy with rhGH. Since the diagnosis of GHD in adults can be challenging, GH-stimulation tests are recommended based on individual patient circumstances and use of appropriate GH cut-points. Available GH-stimulation tests are discussed regarding variability, accuracy, reproducibility, safety, and contraindications, among other factors. The regimen for starting and maintaining rhGH treatment now uses individualized dose adjustments, which has improved effectiveness and reduced reported side effects, dependent on age, gender, body mass index, and various other individual characteristics. With careful dosing of rhGH replacement, many features of adult GHD are reversible and side effects of therapy can be minimized. Scientific studies have consistently shown rhGH therapy to be beneficial for adults with GHD, including improvements in body composition and quality of life, and have demonstrated the safety of short- and long-term rhGH replacement. Abbreviations: AACE = American Association of Clinical Endocrinologists; ACE = American College of Endocrinology; AHSG = alpha-2-HS-glycoprotein; AO-GHD = adult-onset growth hormone deficiency; ARG = arginine; BEL = best evidence level; BMD = bone mineral density; BMI = body mass index; CI = confidence interval; CO-GHD = childhood-onset growth hormone deficiency; CPG = clinical practice guideline; CRP = C-reactive protein; DM = diabetes mellitus; DXA = dual-energy X-ray absorptiometry; EL = evidence level; FDA = Food and Drug Administration; FD-GST = fixed-dose glucagon stimulation test; GeNeSIS = Genetics and Neuroendocrinology of Short Stature International Study; GH = growth hormone; GHD = growth hormone deficiency; GHRH = growth hormone-releasing hormone; GST = glucagon stimulation test; HDL = high-density lipoprotein; HypoCCS = Hypopituitary Control and Complications Study; IGF-1 = insulin-like growth factor-1; IGFBP = insulin-like growth factor-binding protein; IGHD = isolated growth hormone deficiency; ITT = insulin tolerance test; KIMS = Kabi International Metabolic Surveillance; LAGH = long-acting growth hormone; LDL = low-density lipoprotein; LIF = leukemia inhibitory factor; MPHD = multiple pituitary hormone deficiencies; MRI = magnetic resonance imaging; P-III-NP = procollagen type-III amino-terminal pro-peptide; PHD = pituitary hormone deficiencies; QoL = quality of life; rhGH = recombinant human growth hormone; ROC = receiver operating characteristic; RR = relative risk; SAH = subarachnoid hemorrhage; SDS = standard deviation score; SIR = standardized incidence ratio; SN = secondary neoplasms; T3 = triiodothyronine; TBI = traumatic brain injury; VDBP = vitamin D-binding protein; WADA = World Anti-Doping Agency; WB-GST = weight-based glucagon stimulation test.
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Yuen KCJ, Llahana S, Miller BS. Adult growth hormone deficiency: clinical advances and approaches to improve adherence. Expert Rev Endocrinol Metab 2019; 14:419-436. [PMID: 31721610 DOI: 10.1080/17446651.2019.1689119] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/01/2019] [Indexed: 12/17/2022]
Abstract
Introduction: There have been significant clinical advances in the understanding of the diagnosis and benefits of long-term recombinant human growth hormone (rhGH) replacement in adults with GH deficiency (GHD) since its approval in 1996 by the United States Food and Drug Administration.Areas covered: We searched PubMed, Medline, CINAHL, EMBASE and PsychInfo databases between January 2000 and June 2019 for published studies evaluating adults with GHD. We reviewed the data of the oral macimorelin test compared to the GHRH plus arginine and the insulin tolerance tests that led to its approval by the United States FDA and European Medicines Agency for adult diagnostic testing. We summarize the clinical advances of long-term benefits of rhGH therapy and the potential effects of GH receptor polymorphisms on individual treatment responsiveness. We identify that non-adherence and discontinuation rates are high and recommend strategies to support patients to improve adherence. We also provide an overview of several long-acting GH (LAGH) preparations currently under development and their potential role in improving treatment adherence.Expert opinion: This article summarizes recent clinical advances in rhGH replacement therapy, the biological and molecular aspects that may influence rhGH action, and offers practical strategies to enhance adherence in adults with GHD.
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Affiliation(s)
- Kevin C J Yuen
- Barrow Pituitary Center, Barrow Neurological Institute, University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, AZ, USA
| | - Sofia Llahana
- Division of Nursing, School of Health Sciences, City University of London, London, UK
| | - Bradley S Miller
- Division of Pediatric Endocrinology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
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Leães CGS, Fernandes MV, Alves L, Araújo B, Rech CGSL, Ferreira NP, Rosa LHT, Pereira-Lima JFS, Oliveira MC. Assessment of Anthropometric and Physical Health Indicators before and after Pituitary Surgery in Patients with Nonfunctioning Pituitary Adenomas, Acromegaly, and Cushing Disease. Indian J Endocrinol Metab 2019; 23:473-479. [PMID: 31741909 PMCID: PMC6844162 DOI: 10.4103/ijem.ijem_301_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION Individuals with pituitary adenomas may have organic consequences of their disease or therapy, and psychological changes can compromise their quality of life (QoL). This study aimed to determine the anthropometric profile and health indicators of patients with pituitary adenoma before and after pituitary surgery. METHODS Forty-four patients were included in this study. Out of these, 22 patients had nonfunctioning adenomas (50%), 17 acromegaly (38.6%), and 5 patients with Cushing's disease (11.4%). Anthropometric measurements included body mass index (BMI), waist circumference (WC), and waist-to-hip ratio (WHR). Health indicators included body fat percentage (BF%), basal metabolic rate (BMR), maximal oxygen uptake (VO2 max), and hand grip strength. Physical activity level (the International Physical Activity Questionnaire [IPAQ]), subjective perception of health, body image (Body Shape Questionnaire), body satisfaction (Stunkard Figure Rating Scale) were used. RESULTS The mean patient age was 47.2 ± 14.6 years; of which 25 were women (56.8%). Before surgery, 75.0% were overweight or obese, 84.1% had WC with risk of metabolic complications, and 90.0% had WHR with cardiovascular risk. There was a high BF% in 56.4% of cases, low BMR in 65.1%, lower VO2 max in 16.2%, and below-average grip strength in 88.6%. Hypopituitary patients had poorer cardiorespiratory fitness. The IPAQ showed reduction in physical activity, and 79.5% of patients were dissatisfied with their body image. Patients with nonfunctioning adenomas had better perception of their health while those with Cushing's disease had more distorted body image. Postoperatively, patients with acromegaly showed improvement in WHR and physical activity level, and patients with Cushing's disease showed improvement in anthropometric variables. CONCLUSIONS These findings emphasize the need for continuous monitoring of this population for anthropometric indicators associated with metabolic and cardiovascular comorbidities as well as body satisfaction.
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Affiliation(s)
- Cyro G. S. Leães
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil
| | - Matheus V. Fernandes
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
| | - Luiza Alves
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
| | - Bruna Araújo
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
| | - Carolina G. S. L. Rech
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
| | - Nelson P. Ferreira
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
| | - Luis H. T. Rosa
- Programa de Pos-Graduacao em Ciencias da Reabilitacao, UFCSPA, Porto Alegre, RS, Brasil
| | - Júlia F. S. Pereira-Lima
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
| | - Miriam C. Oliveira
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brasil
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa, UFCSPA, Porto Alegre, RS, Brasil
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11
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Treatment with Growth Hormone for Adults with Growth Hormone Deficiency Syndrome: Benefits and Risks. Int J Mol Sci 2018; 19:ijms19030893. [PMID: 29562611 PMCID: PMC5877754 DOI: 10.3390/ijms19030893] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 03/07/2018] [Accepted: 03/14/2018] [Indexed: 12/14/2022] Open
Abstract
Pharmacological treatment of growth hormone deficiency (GHD) in adults began in clinical practice more than 20 years ago. Since then, a great volume of experience has been accumulated on its effects on the symptoms and biochemical alterations that characterize this hormonal deficiency. The effects on body composition, muscle mass and strength, exercise capacity, glucose and lipid profile, bone metabolism, and quality of life have been fully demonstrated. The advance of knowledge has also taken place in the biological and molecular aspects of the action of this hormone in patients who have completed longitudinal growth. In recent years, several epidemiological studies have reported interesting information about the long-term effects of GH replacement therapy in regard to the possible induction of neoplasms and the potential development of diabetes. In addition, GH hormone receptor polymorphism could potentially influence GH therapy. Long-acting GH are under development to create a more convenient GH dosing profile, while retaining the excellent safety, efficacy, and tolerability of daily GH. In this article we compile the most recent data of GH replacement therapy in adults, as well as the molecular aspects that may condition a different sensitivity to this treatment.
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12
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Anderson LJ, Tamayose JM, Garcia JM. Use of growth hormone, IGF-I, and insulin for anabolic purpose: Pharmacological basis, methods of detection, and adverse effects. Mol Cell Endocrinol 2018; 464:65-74. [PMID: 28606865 PMCID: PMC5723243 DOI: 10.1016/j.mce.2017.06.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 06/02/2017] [Accepted: 06/08/2017] [Indexed: 12/24/2022]
Abstract
Hormones with anabolic properties such as growth hormone (GH), insulin-like growth factor-1 (IGF-I), and insulin are commonly abused among professional and recreational athletes to enhance physical ability. Performance enhancing drugs (PEDs) such as these are also commonly used by recreational athletes to improve body aesthetics. The perception of increased muscle mass due to supraphysiologic hormone supplementation, or doping, is widespread among PED users despite a paucity of evidence-based data in humans. Even still, athletes will continue to abuse PEDs in hopes of replicating anecdotal results. It is important to educate the general public and potential treating physicians of the risks of PED use, including the dangers of polypharmacy and substance dependence. It will also be important for the research community to address the common challenges associated with studying PED use such as the ethical considerations of PED administration, the general reticence of the PED-using community to volunteer information, and the constant need to improve or create new detection methods as athletes continually attempt to circumvent current methods. This review highlights the anabolic mechanisms and suggestive data implicating GH, IGF-I, and insulin for use as PEDs, the specific detection methods with cutoff ranges that may be utilized to diagnose abuse of each substance, and their respective side effects.
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Affiliation(s)
- Lindsey J Anderson
- Geriatric Research, Education and Clinical Center (GRECC), VA Puget Sound Health Care System, Seattle, WA, United States
| | - Jamie M Tamayose
- Geriatric Research, Education and Clinical Center (GRECC), VA Puget Sound Health Care System, Seattle, WA, United States
| | - Jose M Garcia
- Geriatric Research, Education and Clinical Center (GRECC), VA Puget Sound Health Care System, Seattle, WA, United States; Department of Medicine, Division of Gerontology & Geriatric Medicine, University of Washington School of Medicine, Seattle, WA, United States.
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Gonzalez S, Sathyapalan T, Javed Z, Atkin SL. Effects of Growth Hormone Replacement on Peripheral Muscle and Exercise Capacity in Severe Growth Hormone Deficiency. Front Endocrinol (Lausanne) 2018; 9:56. [PMID: 29527190 PMCID: PMC5829039 DOI: 10.3389/fendo.2018.00056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE The aim of this study is to evaluate the effect of growth hormone therapy (rGH) on mitochondrial function on peripheral muscle and to correlate with exercise capacity in subjects with severe adult growth hormone deficiency (GHD). DESIGN Six months, double-blind, randomized, crossover, placebo-controlled trial of subcutaneous rGH in 17 patients with GHD. MEASUREMENTS Quadriceps muscle biopsies were obtained at baseline, 3 months, and 6 months to measure succinate dehydrogenase (SDH) to assess mitochondrial activity. Exercise capacity was measured with cardiopulmonary exercise testing. Lipids, glycemic parameters, and body fat levels were also measured. RESULTS Serum insulin-like growth factor 1 (IGF1) levels reduced fat mass by 3.2% (p < 0.05) and normalized with rGH in the active phase (p < 0.005). Patients showed an increase in SDH (p < 0.01) from base line that differed between placebo and rGH therapy treatment groups (p < 0.05): those treated by rGH followed by placebo showed a significant increase in SDH (p < 0.001) followed by a decrease, with a significant between group difference at the end of 6 months (p < 0.05). No significant improvements or correlation with exercise capacity was found. CONCLUSION Short-term rGH for 3 months normalized IGF1 levels, reduced fat mass, and had a significant effect on mitochondrial function, but exercise capacity was unchanged. CLINICAL TRIAL REGISTRATION Number ISRCTN94165486.
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Affiliation(s)
- Susana Gonzalez
- Hull York Medical School, University of Hull, Heslington, United Kingdom
| | - Thozhukat Sathyapalan
- Hull York Medical School, University of Hull, Heslington, United Kingdom
- *Correspondence: Thozhukat Sathyapalan,
| | - Zeeshan Javed
- Hull York Medical School, University of Hull, Heslington, United Kingdom
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Capalbo D, Barbieri F, Improda N, Giallauria F, Di Pietro E, Rapacciuolo A, Di Mase R, Vigorito C, Salerno M. Growth Hormone Improves Cardiopulmonary Capacity and Body Composition in Children With Growth Hormone Deficiency. J Clin Endocrinol Metab 2017; 102:4080-4088. [PMID: 28938456 DOI: 10.1210/jc.2017-00871] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/24/2017] [Indexed: 01/22/2023]
Abstract
CONTEXT Growth hormone deficiency (GHD) in children may be associated with early cardiovascular risk factors and alterations in left ventricular (LV) structure and function; data on cardiopulmonary functional capacity are lacking. OBJECTIVES Aim of the study was to evaluate the effect of GHD and growth hormone (GH) therapy on cardiopulmonary functional capacity, left and right cardiac structure and function, and body composition in children and adolescents. DESIGN Prospective, case-control study. PATIENTS AND METHODS Twenty-one untrained GHD children (11.3 ± 0.8 years) underwent cardiopulmonary exercise testing, echocardiography and dual-energy x-ray absorptiometry, before and after 12 months of GH therapy. Twenty-one controls matched for sex, pubertal status, body mass index, and physical activity (PA) were evaluated at baseline and after 1 year. RESULTS At baseline, GHD patients showed reduced LV mass (LVM; 63.32 ± 7.80 vs 80.44 ± 26.29 g/m2, P = 0.006), peak oxygen consumption (VO2peak; 22.92 ± 4.80 vs 27.48 ± 6.71 mL/Kg/min, P = 0.02), peak workload (80.62 ± 29.32 vs 103.76 ± 36.20 W, P = 0.02), and O2 pulse (4.93 ± 1.30 vs 7.67 ± 2.93 mL/beat, P = 0.0003), compared with controls. GHD patients also exhibited lower lean body mass (LBM 65.36 ± 7.84% vs 76.13 ± 8.23%, P < 0.001), and higher fat mass (FM 30.84 ± 7.92% vs 22.19 ± 8.18%, P = 0.001) than controls. GH therapy resulted in a significant increase of LVM (72.01 ± 15.88, P = 0.03), VO2peak (26.80 ± 4.97; P = 0.01), peak workload (103.67 ± 32.24, P = 0.001), O2 pulse (6.64 ± 1.68, P = 0.0007), and LBM (75.36 ± 7.59%, P = 0.0001), with a reduction in FM (22.62 ± 7.73%, P = 0.001). No difference was found in either left or right ventricular function. CONCLUSION Our results suggest that cardiac structure, body composition and cardiopulmonary functional capacity are impaired in children with untreated GHD and can be restored after short-term GH replacement therapy.
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Affiliation(s)
- Donatella Capalbo
- Department of Translational Medical Sciences, Pediatric Section, Federico II University of Naples, 80131 Naples, Italy
| | - Flavia Barbieri
- Department of Translational Medical Sciences, Pediatric Section, Federico II University of Naples, 80131 Naples, Italy
| | - Nicola Improda
- Department of Translational Medical Sciences, Pediatric Section, Federico II University of Naples, 80131 Naples, Italy
| | - Francesco Giallauria
- Department of Translational Medical Sciences, Division of Internal Medicine and Cardiac Rehabilitation, Federico II University of Naples, 80131 Naples, Italy
| | - Elisa Di Pietro
- Department of Advanced Biomedical Science, Federico II University of Naples, 80131 Naples, Italy
| | - Antonio Rapacciuolo
- Department of Advanced Biomedical Science, Federico II University of Naples, 80131 Naples, Italy
| | - Raffaella Di Mase
- Department of Translational Medical Sciences, Pediatric Section, Federico II University of Naples, 80131 Naples, Italy
| | - Carlo Vigorito
- Department of Translational Medical Sciences, Division of Internal Medicine and Cardiac Rehabilitation, Federico II University of Naples, 80131 Naples, Italy
| | - Mariacarolina Salerno
- Department of Translational Medical Sciences, Pediatric Section, Federico II University of Naples, 80131 Naples, Italy
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Sellami M, Dhahbi W, Hayes LD, Padulo J, Rhibi F, Djemail H, Chaouachi A. Combined sprint and resistance training abrogates age differences in somatotropic hormones. PLoS One 2017; 12:e0183184. [PMID: 28800636 PMCID: PMC5553853 DOI: 10.1371/journal.pone.0183184] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 07/29/2017] [Indexed: 02/01/2023] Open
Abstract
The aim of this investigation was to compare serum growth hormone (GH), insulin-like growth factor-1 (IGF-1) and insulin-like growth factor-binding protein-3 (IGFBP-3) in response to a combined sprint and resistance training (CSRT) program in young and middle-aged men.Thirty-eight healthy, moderately trained men participated in this study. Young and middle-aged men were randomly assigned to, a young training group (YT = 10, 21.4±1.2yrs) ora young control group (YC = 9, 21.6±1.8 yrs), a middle-aged training group (MAT = 10, 40.4±2.1 yrs) or a middle-aged control group (MAC = 9, 40.5±1.8 yrs). Participants performed the Wingate Anaerobic Test (WAnT) before and after a 13-week CSRT program (three sessions per week). Blood samples were collected at rest, after warm-up, immediately post-WAnT, and 10 min post-WAnT. CSRT induced increases in GH at rest and in response to the WAnT in YT and MAT (P<0.05). CSRT-induced increases were observed for IGF-1 and IGFBP-3 at rest in MAT only (P<0.05). Pre-training, GH, IGF-1 and IGFBP-3 were significantly higher at rest and in response to the WAnT in young participants as compared to their middle-aged counterparts (P<0.05). Post-training, YT and MAT had comparable basal GH (P>0.05). In response to the WAnT, amelioration of the age-effect was observed between YT and MAT for IGF-1 and IGF-1/IGFBP-3 ratio following CSRT (P>0.05). These data suggest that CSRT increases the activity of the GH/IGF-1 axis at rest and in response to the WAnT in young and middle-aged men. In addition, CSRT reduces the normal age-related decline of somatotropic hormones in middle-age men.
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Affiliation(s)
- Maha Sellami
- Tunisian Research Laboratory “Sport Performance Optimization” National Center of Medicine and Science in Sports, Tunis, Tunisia
| | - Wissem Dhahbi
- Tunisian Research Laboratory “Sport Performance Optimization” National Center of Medicine and Science in Sports, Tunis, Tunisia
| | - Lawrence D. Hayes
- Active Ageing Research Group, Department of Medical and Sport Sciences, University of Cumbria, Bowerham Road, Lancaster, United Kingdom
| | - Johnny Padulo
- Tunisian Research Laboratory “Sport Performance Optimization” National Center of Medicine and Science in Sports, Tunis, Tunisia
- University eCampus, Novedrate, Italy
- Faculty of Kinesiology, University of Split, Split, Croatia
- * E-mail:
| | - Fatma Rhibi
- Movement, Sport, Health and Sciences Laboratory (M2S), University of Rennes 2, Rennes, France
| | - Hanen Djemail
- Military Hospital of Instruction of Tunis, Department of Endocrinology, Tunis, Tunisia
| | - Anis Chaouachi
- Tunisian Research Laboratory “Sport Performance Optimization” National Center of Medicine and Science in Sports, Tunis, Tunisia
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Hermansen K, Bengtsen M, Kjær M, Vestergaard P, Jørgensen JOL. Impact of GH administration on athletic performance in healthy young adults: A systematic review and meta-analysis of placebo-controlled trials. Growth Horm IGF Res 2017; 34:38-44. [PMID: 28514721 DOI: 10.1016/j.ghir.2017.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 05/02/2017] [Accepted: 05/09/2017] [Indexed: 10/19/2022]
Abstract
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. Fifty-four potentially relevant articles were retrieved of which 11 were included in this analysis comprising 254 subjects. RESULTS Administration of GH significantly increased lean body mass (p<0.01) and decreased fat mass (p<0.01). In addition, GH increased the exercising levels of glycerol (p=0.01) and free fatty acids (p<0.01), but did not alter the respiratory quotient during exercise (p=0.30). GH significantly increased anaerobic exercise capacity (p<0.01) in the only study which investigated this, but did not over weeks to months improve muscle strength (p=0.36) or maximum oxygen uptake (p=0.89). CONCLUSION GH administration elicits significant changes in body composition, but does not increase either muscle strength or aerobic exercise capacity in healthy, young subjects.
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Affiliation(s)
- Kasper Hermansen
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark.
| | - Mads Bengtsen
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Michael Kjær
- Institute of Sports Medicine, Department of Orthopedic Surgery M, Bispebjerg Hospital and Centre for Healthy Aging, Faculty of Health and Medical Science, University of Copenhagen, Denmark
| | - Peter Vestergaard
- Department of Clinical Medicine, Aalborg University Hospital, Aalborg, Denmark; Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark
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