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The effect of recom...
The effect of recombinant human IGF-I on protein metabolism in post-operative patients without nutrition compared to effects in experimental animals.
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Sandström, R (författare)
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- Svanberg, Elisabeth, 1961 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery
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- Hyltander, Anders, 1954 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery
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- Haglind, Eva, 1947 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery
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- Ohlsson, Claes, 1965 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine
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Zachrisson, H (författare)
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Berglund, B. (författare)
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- Lindholm, Elisabet, 1946 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery
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- Brevinge, Hans, 1946 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna,Institute of Surgical Sciences
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- Lundholm, Kent, 1945 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi,Institute of Surgical Sciences, Department of Surgery
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(creator_code:org_t)
- 1995
- 1995
- Engelska.
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Ingår i: European journal of clinical investigation. - 0014-2972. ; 25:10, s. 784-92
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- This study has evaluated the effects of recombinant human insulin-like growth factor I (rhIGF-I) to moderately stressed post-operative patients provided with dextrose as the only exogeneous substrate. Thirty patients who underwent elective colorectal surgery were randomized to receive either rhIGF-I (80 micrograms kg-1 bw) subcutaneously twice daily or placebo injections in a double-blind parallel group design. Nitrogen balance, urinary 3-methyl-histidine excretion plasma growth hormone (GH), serum cortisol, IGF-I binding proteins (IGFBP-1,3), glomerular filtration rate, plasma amino acid concentrations and whole-body energy expenditures were measured as effector variables during days 1-5 post-operatively. Animal and isolated tissue experiments were performed as additional control experiments to confirm cellular effectiveness of the recombinant material. rhIGF-I increased significantly the glomerular filtration rate and prevented the adaptive decrease in whole-body energy expenditure in response to partial starvation in the postoperative period. Serum and plasma concentrations of IGFBP-1,3 cortisol, blood glucose and amino acids were not significantly influenced by rhIGF-I administration, while plasma GH levels decreased significantly as expected. rhIGF-I had no effect on either nitrogen balance or protein breakdown (3-methylhistidine excretion) in post-operative patients on dextrose supplementation only, although plasma concentrations of IGF-I increased from 130-140 ng mL-1 to a range of 300-450 ng mL-1. In contrast, IGF-I stimulated the synthesis of both globular and myofibrillar proteins (+50%, P < 0.01), when given as a single dose (100 micrograms kg-1) 2 h before measurements of protein synthesis in skeletal muscles of overnight fasted adult mice. This stimulatory effect by IGF-I (1 microgram mL-1) was also confirmed by measurements of skeletal muscle protein synthesis in vitro (+40%, P < 0.05). Orally re-fed mice had a normal transcription of IGF-I mRNA in skeletal muscle cells, while overnight fasted mice showed a trend to down-regulated transcription. Our results demonstrate that rhIGF-I has several significant physiological effects, without major side-effects, when supplied to partially starved patients in the post-operative phase. The lack of a whole-body nitrogen sparing effect by rhIGF-I alone to post-operative patients is not clear, but was most likely explained by subnormal plasma concentrations of amino acids.
Nyckelord
- Aged
- Amino Acids
- blood
- drug effects
- Animals
- Colorectal Surgery
- Double-Blind Method
- Female
- Food Deprivation
- physiology
- Humans
- Injections
- Subcutaneous
- Insulin-Like Growth Factor I
- administration & dosage
- metabolism
- pharmacology
- Male
- Mice
- Mice
- Inbred C57BL
- Middle Aged
- Postoperative Period
- Proteins
- metabolism
- Recombinant Proteins
- administration & dosage
- metabolism
- pharmacology
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- art (ämneskategori)
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Sandström, R
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Svanberg, Elisab ...
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Hyltander, Ander ...
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Haglind, Eva, 19 ...
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Ohlsson, Claes, ...
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Zachrisson, H
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Berglund, B.
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Lindholm, Elisab ...
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Brevinge, Hans, ...
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Lundholm, Kent, ...
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European journal ...
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Göteborgs universitet