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Changes in thyroid volume and insulin-like growth factor 1 in pre- and post-pubertal obese children
- Source :
- Nigerian Journal of Clinical Practice. 22:1417
- Publication Year :
- 2019
- Publisher :
- Medknow, 2019.
-
Abstract
- Background: There is a mutual dynamic interaction between thyroid volume (TV), insulin-like growth factor-1 (IGF-1), and body mass index (BMI). These covariates undergo a change with the transition into puberty. The heterogeneity of the variates and study populations complicate the evaluation of the role of pure pubertal effect. Objective: The purpose of this study was to investigate the effect of puberty on IGF-1 and TV in a predetermined homogenous population such as obese children. Subjects and Methods: Three hundred and eighty children (202 girls and 178 boys) aged between 6 and 18 were enrolled in this prospective study. The children were assigned to two groups according to their pubertal status, i.e., prepubertal (n = 169) and postpubertal (n = 211). According to age and sex, the obese group (n = 222) was made up of children at and above the 95th percentile, and the control group (n = 158) of children under the 85th percentile. The following parameters were evaluated in all children: BMI, pubertal status, TV, and serum IGF-1, IGFBP-3, and IGF-1:IGFBP-3 molar ratio. Results: In comparison to the prepubertal obese group, the obese group at Tanner stage 2 had a larger mean TV (P = 0.008) and higher IGF-1 level (P = 0.033). There was a positive correlation between IGF-1 and TV both in the prepubertal and pubertal group (r169= 0.369, P = 0.001; r211= 0.316, P = 0.004, respectively), whereas there was no correlation between IGF-1 and BMI (r169= 0.99, P = 0.092; r211= 0.094, P = 0.088, respectively). Conclusion: This study showed that the TV and serum IGF-1 levels were increased in obese children in the early stage of puberty and that there was a positive correlation between these two variables in all children, which shows the specific effect of the early stage of puberty on the increase in TV and IGF-1 levels and suggests that increased TV is associated with the increase in IGF-1 levels in a homogenous group such as obese children.
- Subjects :
- Male
Percentile
Adolescent
medicine.medical_treatment
Population
Thyroid Gland
Physiology
Childhood obesity
Body Mass Index
Insulin-like growth factor
Humans
Medicine
Obesity
Prospective Studies
Sexual Maturation
Insulin-Like Growth Factor I
Child
education
Prospective cohort study
Pre and post
education.field_of_study
business.industry
Puberty
Thyroid
General Medicine
medicine.disease
Recombinant Proteins
Insulin-Like Growth Factor Binding Protein 3
medicine.anatomical_structure
Child, Preschool
Female
business
Body mass index
Subjects
Details
- ISSN :
- 11193077
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Nigerian Journal of Clinical Practice
- Accession number :
- edsair.doi.dedup.....98046419b9852aa4c08f2f6d502f723f