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The negative associ...
The negative association between serum free testosterone and leptin is dependent on insulin-like growth factor-binding protein 1 in healthy young and middle-aged men
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- Erfurth, E M (författare)
- Lund University,Lunds universitet,Medicin, Lund,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Endokrin,Forskargrupper vid Lunds universitet,Medicine, Lund,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Endocrine,Lund University Research Groups
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- Ahrén, B (författare)
- Lund University,Lunds universitet,Medicin, Lund,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Diabetes,Forskargrupper vid Lunds universitet,Medicine, Lund,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups
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(creator_code:org_t)
- 2008-06-28
- 2000
- Engelska.
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Ingår i: Clinical Endocrinology. - : Wiley. - 0300-0664. ; 52:4, s. 8-493
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- OBJECTIVE: Previous studies have shown that serum levels of testosterone correlate negatively with leptin and positively with insulin-like growth factor binding protein 1 (IGFBP-1). The present study examined whether these associations are linked.DESIGN AND PATIENTS: The association between serum levels of IGFBP-1, free testosterone and insulin on one hand and leptin on the other hand were investigated in 38 healthy men with a median age of 48 years (range 23-62 years).RESULTS: Univariate analyses revealed that serum levels of leptin correlated negatively with serum free testosterone (r = - 0.42, P = 0.008) and with serum IGFBP-1 (r = - 0. 45, P = 0.005) and positively with body mass index (BMI; r = 0.46, P = 0.003) and serum insulin (r = 0.45, P = 0.004). Serum free testosterone correlated with IGFBP-1 (r = 0.42, P = 0.008) but not with serum insulin (r = - 0.08, ns). The correlations between leptin and free testosterone and between leptin and IGFBP-1 remained significant after adjustement for the influences of BMI and insulin. Forward stepwise multiple regression when BMI, insulin, testosterone and IGFBP-1 were entered in a model as independent variables and leptin as the dependent variable showed that BMI and IGFBP-1 were independent predictors of circulating leptin. These two parameters yielded an r 2 of 0.38, thereby together explaining approximately 40% of serum leptin.CONCLUSION: Serum levels of free testosterone and IGFBP-1 correlate negatively with serum leptin in healthy nonobese men but this influence is dependent on the influence of IGFBP-1. The study therefore suggests an important impact of IGFBP-1 on the regulation of circulating leptin in young and middle-aged men.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
Nyckelord
- Adult
- Analysis of Variance
- Biomarkers/blood
- Humans
- Insulin/blood
- Insulin-Like Growth Factor Binding Protein 1/blood
- Leptin/blood
- Linear Models
- Male
- Middle Aged
- Testosterone/blood
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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