IL-6-174 G/C transversion might decrease male infertility risk: A case-control study.

Area of Science:

• Genetics
• Reproductive Medicine
• Molecular Biology

Background:

• Genetic factors significantly influence male infertility.
• Interleukin-6 (IL-6) is recognized as a key gene in male reproductive function.
• The specific role of the IL-6-174 G/C polymorphism in male infertility requires further investigation.

Purpose of the Study:

• To explore the association between the IL-6-174 G/C genetic polymorphism and male infertility.
• To determine if the IL-6-174 G/C transversion impacts the risk of specific infertility conditions like oligozoospermia and asthenospermia.

Main Methods:

• A case-control study involving 314 men (163 infertile, 151 fertile) was conducted.
• DNA was extracted from whole blood samples for IL-6-174 G/C polymorphism analysis using polymerase chain reaction-restriction fragment length polymorphism.
• Infertile participants were subcategorized into nonobstructive azoospermia, oligozoospermia, and asthenozoospermia groups.

Main Results:

• A significant association was found between the GC genotype and male infertility.
• The heterozygous GC genotype correlated with a reduced risk of oligozoospermia and asthenospermia.
• The C allele was associated with a decreased risk of overall infertility and the specific conditions of oligozoospermia and asthenospermia.

Conclusions:

• The IL-6-174 G/C polymorphism may act as a protective genetic factor against male infertility.
• The C allele of the IL-6-174 G/C polymorphism demonstrates a protective effect, particularly against oligozoospermia and asthenospermia.