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Assessment of immune function after short-term administration of recombinant human growth hormone in healthy young males.
- Source :
-
European journal of applied physiology [Eur J Appl Physiol] 2011 Jul; Vol. 111 (7), pp. 1307-12. Date of Electronic Publication: 2010 Dec 08. - Publication Year :
- 2011
-
Abstract
- Growth hormone (GH) is a commonly used drug aimed at improving sport performance. The aim of this study is to evaluate the immunomodulatory effects of short-term administration of recombinant GH (rhGH) in healthy young males. NK cell number, activity and phenotype, T cell number, CD4(+) (Th1/Th2) cytokine production of IL2, IL4, IL6, IL10, TNF-α and IFN-γ and CD4(+)/CD8(+) ratio with particular attention to the possible correlation to IGF-I production were investigated. 30 males (27 ± 9 years) were randomly assigned to placebo (n = 15) or drug (rhGH) 1 mg/day groups (n = 15) with daily injection for 7 days. IGF-I plasma concentration and flow cytometry data were generated at baseline and days 8, 15, 22 and 29 post injection. Data analysis used General Linear Model with repeated measures, Bonferroni correction factor and significance at p ≤ 0.05. Serum IGF-I levels (ng/mL) increased significantly (p ≤ 0.01) on day 8 (0.48 ± 0.78) after injections compared to baseline (0.31 ± 0.07) and days 15 (0.33 ± 0.06), 22 (0.29 ± 0.05) and 29 (0.29 ± 0.06). A significant time effect was noted in IL10 secretion (pg/mL) from day 15 (P = 35.14 ± 19.93, rhGH = 26.63 ± 16.39) to days 22 (P = 61.32 ± 20.41, rhGH = 74.99 ± 46.91) and 29 (P = 101.98 ± 67.25, rhGH = 107.74; ± 122.58). There was no correlation between IGF-I and NK activity, phenotype or number along with T lymphocyte number, CD4(+)/CD8(+) ratio or Th1 and Th2 cytokine production. In conclusion, cytokine secretion spectrum was not affected by short-term rhGH administration in young males.
- Subjects :
- Adult
Drug Administration Schedule
Health
Human Growth Hormone administration & dosage
Humans
Immune System physiology
Insulin-Like Growth Factor I analysis
Killer Cells, Natural cytology
Killer Cells, Natural drug effects
Lymphocyte Count
Male
Placebos
Recombinant Proteins administration & dosage
T-Lymphocytes cytology
T-Lymphocytes drug effects
Time Factors
Young Adult
Human Growth Hormone pharmacology
Immune System drug effects
Recombinant Proteins pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1439-6327
- Volume :
- 111
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- European journal of applied physiology
- Publication Type :
- Academic Journal
- Accession number :
- 21140164
- Full Text :
- https://doi.org/10.1007/s00421-010-1756-4