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Broad variability i...
Broad variability in pharmacokinetics of GH following rhGH injections in children
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- Lundberg, Elena (författare)
- Umeå universitet,Pediatrik
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- Andersson, B. (författare)
- Umeå universitet,Pediatrik
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- Kristrom, B. (författare)
- Umeå universitet,Pediatrik
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- Rosberg, Sten, 1945 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
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- Albertsson-Wikland, Kerstin, 1947 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska.
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Ingår i: Growth Hormone & Igf Research. - : Elsevier BV. - 1096-6374 .- 1532-2238. ; 40, s. 61-68
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Objective: Daily subcutaneous self-injection of GH is used worldwide to treat short stature in childhood; longitudinal data on the impact of this regimen on GH-uptake are lacking. Design: Children with/without GH-deficiency participating in clinical trials were followed prospectively ( s 8 times). Blood was sampled pre-GH-injection (dose GH(33)/GH(67) mu g/kg) and either every 30 min thereafter for 24 h (Experimental-setting; 59 GH-curves/15 children); or every 2 h thereafter for 16 h (Clinical-setting; 429 GHcurves/117 children). Pharmacokinetics were estimated by time T-max (h) of maximal GH-concentration (C-max , mU/L) and area under the curve for 16 h (AUC, mU/L * h). Results: In the Clinical-setting, median C-max was 71 mU/L and AUC was 534 mU/L * h, with coefficients of variation for intra-individual variation of 39% and 36%, respectively, and inter-individual variation of 44% and 42%, respectively. 43% of C-max and AUC variability was explained by GH-dose and proxies for injection depth (baseline GH-level, GH(peak) width, BMISDS). In the Experimental- versus Clinical-setting, 85% and 40% of GH-curves, respectively, reached zero-levels within 24 h. A longer duration was found following a more superficial GH-injection. Spontaneous GH-peaks were identified already 6 h after the GH-injection in about half of the curves of both GHD and non-GHD patients. Conclusion: Very broad intra-individual and inter-individual variability was found. A high GH-peak will optimize growth effects; the highest C-max was found after a deep injection of GH at the higher dose and concentration. In as many as 60% of the children, GH remained detectable in serum after 24 h; a constant GH-level will promote IGF-I and metabolic effects.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Pediatrik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Pediatrics (hsv//eng)
Nyckelord
- Intra-individual variation
- Inter-individual variation
- GH-deficiency
- Non-GH-deficiency
- GH-treatment
- Cmax
- AUC
- GH-peak
- GH-trough
- growth-hormone gh
- deficient children
- binding-protein
- prepubertal
- children
- pharmacological aspects
- hypophysectomized rats
- lymphatic
- transport
- short stature
- factor-i
- igf-i
- Cell Biology
- Endocrinology & Metabolism
- Intra-individual variation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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