Vascular Ageing in Conditions Associated with Early-Onset Hypogonadism

Area of Science:

• Endocrinology
• Vascular Biology
• Epigenetics

Background:

• Early-onset hypogonadism poses a potential risk for developing early vascular aging (EVA).
• Understanding the vascular and molecular consequences of hypogonadism in adolescents is crucial for long-term health.
• Klinefelter syndrome (KS) and hypospadias are conditions associated with intrauterine hypogonadism.

Purpose of the Study:

• To investigate the presence of early vascular aging (EVA) in adolescents with early-onset hypogonadism.
• To assess markers of oxidative stress and epigenetic alterations in boys with KS and hypospadias compared to healthy controls.
• To explore the relationship between hypogonadism and vascular health in adolescent males.

Main Methods:

• Recruitment of adolescent boys with Klinefelter syndrome (KS), hypospadias, and healthy controls.
• Comprehensive assessments including blood pressure, carotid intima-media thickness (CIMT), and pulse wave velocity (PWV).
• Analysis of hormonal profiles, oxidative stress markers (e.g., TBARS, OSI), and epigenetic markers (e.g., DNMT activity, 8OHdG).

Main Results:

• Adolescents with KS and hypospadias exhibited elevated systolic blood pressure compared to controls.
• Hypospadias group showed increased CIMT and pulse pressure, while KS group had increased mean arterial pressure.
• Elevated oxidative stress markers and increased DNA methyltransferase (DNMT) activity were observed in hypogonadal groups.

Conclusions:

• Adolescents with early-onset hypogonadism demonstrate clear indicators of early vascular aging (EVA).
• Associated oxidative stress and epigenetic alterations suggest complex pathophysiological mechanisms.
• Further research is warranted to elucidate the long-term implications and potential interventions for EVA in hypogonadal adolescents.