In this medical journal, we can find that Sex Hormon Binding Globulin (SHBG) and total testosteron appear to be higher in male children and young adults with diabetes compared to nondiabetic male siblings, it appeared to be in correlation with the absence of endogenous insulin. This condition may lead to show any implications for sex hormon-dependent processes through the whole life in male diagnosed with diabetes as children.
Hepatic production of sex hormone binding globulin (SHBG) is down-regulated by insulin. The relative balance and bioavailability of testosterone and estradiol are influenced by this SHBG. Many conditions related to altered systemic insulin such as Type I Diabetes and Insulin Resistance (IR) in nondiabetics could affect SHBG, sex hormones,and the dependent process of physiology. This can show such factors as delayed age at menarche in girl with type 1 diabetes due to change in bioavailable estradiol and testosterone levels. But the effect of childhood-onset diabetes, and of insulin resistance in nondiabetics, on SHBG and testosterone in children and young adults are poorly understood.
Individuals such adult men and women without diabetes, fasting insulin and IR did not have associated with SHBG. Fasting insulin and IR negatively associated in nondiabetic men but positive in nondiabetic women. However, there were no studies stated in children and adolesescents wihout diabetes.
The experts wanted to understand whether altered sex hormones occur in childhood diabetes across the spectrum of demographic characteristics after addition for primary confounders, and also to know whether insulin have any correlation with sex hormones in children without diabetes. They assumed in hypotesis that SHBG is higher in subjects with diabetes compared to sibling controls, SHBG also related to the absence of endogenous insulin production-as measured by C-peptide, irrespective of diabetes type or treatment, and IR is correlated with lower SHBG in siblings without diabetes. Testosteron levels are higher in those with childhood diabetes as stated on previous studies of type 1 diabetes.
With a cross-sectional study, this research had any limitation due to conclusions on how sex hormon change with age in individuals with childhood diabetes, though they appear to follow a pattern consistent with age differences ones without diabetes. The authors said also that this study underpowered to detect subtle differences in SHBG and testosterone by diabetes type, gender differences in the associations of C-peptide with SHBG and testosterone in ones with diabetes, and its correlation with IR-SHBG and free testosterone in siblings without diabetes. But as they said even this study showed any limitation, this is the first study to examine the correlation of IR with sex hormones in children and young adults without diabetes. However, sex hormone abnormalities in young people without diabetes may be avoided by preventing Insulin Resistance.
As conclusion, total testosteron and SHBG significantly higher in male children and young adults with diabetes due to the absence’s function of endogenous insulin. It needs a further research to know whether IR and SHBG are correlated, because the correlations may perhaps have implications in lifespan for sex hormone-dependent processes.
The author of this medical journal were Kirstie K. Danielson, Ph.D., Melinda L. Drum, Ph.D., and Rebecca B. Lipton, Ph.D., M.P.H., B.S.N from Institute for Endocrine Discovery and Clinical Care, University of Chicago; Department of Health Studies, University of Chicago and supported by National Institutes of Health and ever presented at the 67th American Diabetes Association Meeting.
Download information : Full Text Article ; PDF Format
