scholarly journals Testicular asymmetry in healthy adolescent boys

2018 ◽  
Vol 122 (4) ◽  
pp. 654-666 ◽  
Author(s):  
Donald Vaganée ◽  
Frederik Daems ◽  
William Aerts ◽  
Rosina Dewaide ◽  
Tinne van den Keybus ◽  
...  
Keyword(s):  
Adolescent Boys ◽  
Healthy Adolescent

scholarly journals The Effects of Vitamin D Supplementation on Lipid and Inflammatory Profile of Healthy Adolescent Boys: A Randomized Controlled Trial

Nutrients ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1213
Author(s):  
Amirhossein Yarparvar ◽  
Ibrahim Elmadfa ◽  
Abolghasem Djazayery ◽  
Zahra Abdollahi ◽  
Forouzan Salehi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Lipid Profile ◽  
Controlled Trial ◽  
Group Analysis ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Inflammatory Biomarkers ◽  
Adolescent Boys ◽  
Healthy Adolescent ◽  
School Based

Background: Deficiency of vitamin D, an anti-inflammatory micronutrient with some favorable effects on lipid profiles, has been found to be highly prevalent in adolescents. We aimed to investigate the effect of a school-based vitamin D supplementation regimen on the correction of vitamin D deficiency as well as lipid and inflammatory profiles of healthy adolescent boys. Methods: In this randomized single-blind placebo-controlled trial, seventy-one healthy adolescent boys (age 17 years old) were recruited from one high school in Tehran, Iran, and randomly assigned to two groups. The supplement group received vitamin D pearls at a dose of 50,000 IU monthly for 6 months, this dose is indeed defined by the Ministry of Health in Iran for a potential national school-based vitamin D supplementation program. The other group was given placebo pearls for the same duration. Before and after the treatment, the serum levels of 25-hydroxy vitamin D (25(OH) D), parathyroid hormone (PTH), retinol, lead (Pb), the lipid profile and the inflammatory biomarkers were measured and compared. Results: Between-groups statistical analysis showed that a dose (50,000 IU/month) vitamin D significantly increased the serum levels of 25-hydroxyvitamin D (25 (OH) D) (p < 0.001) and decreased serum levels of PTH (p = 0.003). No significant change was observed in serum levels of retinol and Pb. Between-group analysis revealed that the serum levels of TG (P = 0.001) decreased while an increase in serum levels of HDL (p = 0.021) was observed (p < 0.05). Both the within- and between-group analysis showed that serum tumor necrosis factor receptor 2 (TNFR2) concentration declined while serum interleukin-10 (IL-10) increased in response to vitamin D supplementation (p < 0.05). Conclusion: A supplementation regimen of (50,000 IU/month) vitamin D in a context with high rates of vitamin deficiency has shown positive impacts on the serum vitamin D, lipid profile and inflammatory biomarkers in healthy adolescent boys.

scholarly journals Elevated serum levels of free triiodothyronine in adolescent boys with gynaecomastia compared with controls

2014 ◽  
Vol 171 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Mikkel G Mieritz ◽  
Kaspar Sorensen ◽  
Lise Aksglaede ◽  
Annette Mouritsen ◽  
Casper P Hagen ◽  
...  
Keyword(s):  
Thyroid Hormone ◽  
Elevated Serum ◽  
Serum Levels ◽  
Adolescent Boys ◽  
Free Triiodothyronine ◽  
Pubertal Stage ◽  
Cross Sectional ◽  
Healthy Adolescent ◽  
Serum Free ◽  
Thyroid Hormone Levels

ObjectivePubertal gynaecomastia is a frequent phenomenon occurring in 20–40% of otherwise healthy adolescent boys. Little is known about the aetiology of pubertal gynaecomastia. Markedly elevated thyroid hormone levels in adults with hyperthyroidism are associated with gynaecomastia.DesignA cross-sectional examination of 444 healthy boys with and without pubertal gynaecomastia.MethodsWe evaluated TSH, triiodothyronine (T3), thyroxine (T4), free T4 and free T3 in a cohort of healthy boys with and without pubertal gynaecomastia.ResultsBoys with gynaecomastia had significantly higher serum free T3, even after correction for age, BMI and pubertal stage. After inclusion of IGF1 in the model the differences disappeared. TSH, T4, free T4 and T3 did not differ between the groups.ConclusionsWe speculate that the GH/IGF1 axis and thyroid hormones interact and influence the development of pubertal gynaecomastia.

scholarly journals Measuring testicular asymmetry in healthy adolescent boys

2018 ◽  
Vol 122 (4) ◽  
pp. 530-531
Author(s):  
Michael P. Kurtz ◽  
David A. Diamond
Keyword(s):  
Adolescent Boys ◽  
Healthy Adolescent

scholarly journals Exercise and Postprandial Plasma Triacylglycerol Concentrations in Healthy Adolescent Boys

2007 ◽  
Vol 39 (1) ◽  
pp. 116-122 ◽  
Author(s):  
LAURA A. BARRETT ◽  
JOHN G. MORRIS ◽  
DAVID J. STENSEL ◽  
MARY E. NEVILL
Keyword(s):  
Adolescent Boys ◽  
Healthy Adolescent ◽  
Plasma Triacylglycerol

Physical activity and body composition of adolescent boys

JAMA ◽  
1966 ◽  
Vol 197 (11) ◽  
pp. 891-893 ◽  
Author(s):  
L. P. Novak
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Adolescent Boys
Sign in / Sign up

Export Citation Format

Share Document