Intercellular adhesion molecule-1 (ICAM-1) gene polymorphism and endometriosis in northern Iran

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This study investigated ICAM-1 codon 241 polymorphism in northern Iranian endometriosis patients and controls, finding an association between the R241 allele and increased endometriosis susceptibility.

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This case-control study evaluated whether intercellular adhesion molecule-1 (ICAM-1) gene polymorphism at codon 241 in exon 4 is associated with endometriosis susceptibility in northern Iran. The authors recruited 84 unrelated women with endometriosis and 120 unrelated healthy controls and genotyped the ICAM-1 codon 241 Arg (AGG) versus Gly (GGG) variants using two independent PCR reactions with allele-specific oligonucleotide primers. They found significantly different genotype distributions, with the R241 allele present in 23% of patients versus 6% of controls (P = 0.001; odds ratio 4.67, 95% CI 1.81–12.07), and a trend toward higher R241 frequency in stage IV disease (65% vs 6%; P < 0.0001). The paper’s limitation is that it does not report any functional assays or adjustment for potential confounders beyond the genetic association analysis. This paper is centrally about endometriosis — it tests the association of an ICAM-1 codon 241 polymorphism with endometriosis risk and staging in northern Iran.

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Abstract

PurposeEndometriosis is a chronic pleomorphic disorder with pelvic or systemic manifestations, and is characterized by the presence of endometrial glands and stroma. It is generally considered to involve genetic, environmental, immunological, angiogenic and endocrine processes. The aim of this study was to evaluate the frequency of intercellular adhesion molecule-1 (ICAM-1) polymorphism at position 241 in exon 4 of the ICAM-1 gene in patients with endometriosis and in healthy control subjects in northern Iran.MethodsA total of 84 unrelated patients and 120 consecutive unrelated healthy controls from the northern Iran were recruited for the study. ICAM-1 codon 241 polymorphism analysis was performed by two independent PCR reactions, based on the two set of oligoprimers specific for Arg (AGG) or Gly (GGG) coding sequence, respectively.ResultsGenotype distributions of ICAM-1 gene show significant difference between patients and controls. The R241 allele was detected in 23% of endometriosis patients and in 6% of controls (P = 0.001; odds ratio 4.67; 95% confidence interval 1.81-12.07). Comparing patients with different stage of endometriosis, we found a trend to higher frequency of R241 in patients with stage IV (65 vs 6%; P < 0.0001).ConclusionOur results suggest that ICAM-1 polymorphism in codon 241 is associated with the development of endometriosis susceptibility in the population of northern Iran.
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Abstract

Purpose Endometriosis is a chronic pleomorphic disorder with pelvic or systemic manifestations, and is characterized by the presence of endometrial glands and stroma. It is generally considered to involve genetic, environmental, immunological, angiogenic and endocrine processes. The aim of this study was to evaluate the frequency of intercellular adhesion molecule-1 (ICAM-1) polymorphism at position 241 in exon 4 of the ICAM-1 gene in patients with endometriosis and in healthy control subjects in northern Iran.

Methods

A total of 84 unrelated patients and 120 consecutive unrelated healthy controls from the northern Iran were recruited for the study. ICAM-1 codon 241 polymorphism analysis was performed by two independent PCR reactions, based on the two set of oligoprimers specific for Arg (AGG) or Gly (GGG) coding sequence, respectively.

Results

Genotype distributions of ICAM-1 gene show significant difference between patients and controls. The R241 allele was detected in 23% of endometriosis patients and in 6% of controls (P = 0.001; odds ratio 4.67; 95% confidence interval 1.81–12.07). Comparing patients with different stage of endometriosis, we found a trend to higher frequency of R241 in patients with stage IV (65 vs 6%; P < 0.0001).

Conclusion

Our results suggest that ICAM-1 polymorphism in codon 241 is associated with the development of endometriosis susceptibility in the population of northern Iran. Similar content being viewed by others

References

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Author information Authors and Affiliations Corresponding author Rights and permissions About this article Cite this article Aghajanpour, L., Mashayekhi, F. & Rajaei, F. Intercellular adhesion molecule-1 (ICAM-1) gene polymorphism and endometriosis in northern Iran. Arch Gynecol Obstet 283, 1035–1039 (2011). https://doi.org/10.1007/s00404-010-1479-0 Received: Accepted: Published: Issue date: DOI: https://doi.org/10.1007/s00404-010-1479-0

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endometriosis

MeSH descriptors

Endometriosis Intercellular Adhesion Molecule-1 Adolescent Adult Case-Control Studies Endometriosis Female Genetic Predisposition to Disease Humans Intercellular Adhesion Molecule-1 Iran Polymorphism, Genetic Young Adult

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