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Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
Published on: June 3, 2018
Reproductive factors and NOS3 variant interactions in primary open-angle glaucoma
Jae Hee Kang1, Janey L Wiggs, Jonathan Haines
1Channing Laboratory, Department of Medicine, Harvard Medical School and Brigham & Women’s Hospital, Boston, MA, USA.
Molecular Vision
|October 26, 2011
Summary
Genetic variations in the nitric oxide synthase gene (NOS3) interact with female reproductive factors, influencing primary open-angle glaucoma (POAG) risk. Early menarche and higher parity are linked to altered POAG risk based on specific NOS3 gene variants.
Area of Science:
- Genetics
- Ophthalmology
- Reproductive Health
Background:
- Primary open-angle glaucoma (POAG) is a leading cause of irreversible blindness.
- The role of genetic factors, specifically the nitric oxide synthase gene (NOS3), in POAG pathogenesis is under investigation.
- Interactions between genetic predispositions and female reproductive factors may influence POAG risk.
Purpose of the Study:
- To determine if associations between NOS3 gene variants and POAG risk are modified by female reproductive factors.
- To explore the interplay between specific NOS3 single nucleotide polymorphisms (SNPs) and factors like age at menarche, parity, and oral contraceptive use in POAG development.
Main Methods:
- A nested case-control study was conducted using data from the Nurses' Health Study (1980-2002).
- Four NOS3 SNPs (T-786C, Glu298Asp, rs7830, rs3918188) were genotyped in 374 Caucasian POAG cases and 1,085 controls (aged ≥40).
- Relative risks (RRs) were estimated using multivariable conditional logistic regression, analyzing interactions with reproductive factors.
Main Results:
- Early menarche (<13 years) was associated with a significantly reduced POAG risk in carriers of the wild-type AA homozygotes for the rs3918188 SNP (RR=0.31).
- Among parous women, having 3+ children was linked to increased POAG risk for carriers of the minor allele of the Glu298Asp SNP, whereas women with 1-2 children showed no such association.
- No significant interactions were found between NOS3 SNPs and oral contraceptive use regarding POAG risk.
Conclusions:
- The findings suggest that interactions between NOS3 genotype and female reproductive health are significant in POAG pathogenesis.
- These results highlight the importance of considering reproductive history when evaluating genetic risk for primary open-angle glaucoma.
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