Leu72Met Polymorphism in Ghrelin Gene: A Potential Risk Factor for Hypertension in Type 2 Diabetes Patients

Area of Science:

• Genetics
• Cardiovascular Disease
• Endocrinology

Background:

• Ghrelin (GHRL) plays a role in metabolic and cardiovascular functions.
• Evidence suggests ghrelin influences blood pressure regulation and hypertension.
• The GHRL gene's Leu72Met polymorphism (rs696217) is investigated for its potential role in type 2 diabetes (T2DM).

Purpose of the Study:

• To investigate the association between the GHRL Leu72Met (rs696217) polymorphism and type 2 diabetes (T2DM).
• To examine the relationship between this polymorphism and hypertension within a T2DM cohort.

Main Methods:

• A case-control study genotyped the Leu72Met polymorphism using PCR-RFLP.
• 820 individuals with T2DM and 400 healthy controls were analyzed.
• Polymorphism distribution was compared between groups and within T2DM subgroups based on clinical phenotypes.

Main Results:

• No significant association was found between the Leu72Met polymorphism and T2DM.
• The rs696217 polymorphism was significantly associated with hypertension in T2DM patients.
• The T allele of rs696217 increased the risk of hypertension (OR = 2.50, p < 0.001), remaining significant after adjustment for age, gender, and BMI (OR = 2.62, p < 0.001).

Conclusions:

• This study is the first to link the ghrelin Leu72Met (rs696217) polymorphism to hypertension in Caucasian individuals with T2DM.
• This polymorphism may represent a novel risk factor for hypertension in T2DM patients.
• Further research in diverse populations is needed to confirm these findings.