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Medium-throughput Screening Assays for Assessment of Effects on Ca2+-Signaling and Acrosome Reaction in Human Sperm
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CYP19 and ESR2 polymorphisms as potential culprits in cryptorchidism.

Tubanur Kaya Kurt1, Alev Suzen1, Cilem Ozdemir2

  • 1Muğla Sıtkı Koçman University, Faculty of Medicine, Department of Pediatric Surgery, Muğla, Turkey.

Journal of Pediatric Urology
|December 28, 2024
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Summary

Genetic variations in CYP19 and ESR2 are linked to cryptorchidism risk. Specific genotypes and alleles may increase susceptibility or offer protection, highlighting estrogen pathway involvement in testicular descent.

Keywords:
CYP19CryptorchidismESR2Estrogen signallingGene polymorphism

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Area of Science:

  • Endocrinology
  • Genetics
  • Pediatric Urology

Background:

  • Cryptorchidism, or undescended testes, is associated with infertility and increased testicular cancer risk.
  • Estrogen signaling is crucial for testicular descent, and hormonal imbalances contribute to cryptorchidism.
  • CYP19 (aromatase) regulates local estrogen levels by converting testosterone to estradiol, impacting estrogen receptor-mediated cellular processes.

Purpose of the Study:

  • To investigate the association between polymorphisms in CYP19 (rs2414096) and ESR2 (rs4986938) and the susceptibility to cryptorchidism.
  • To identify specific genetic variants that may confer risk or protection against cryptorchidism.

Main Methods:

  • Genotyping of CYP19 (rs2414096) and ESR2 (rs4986938) polymorphisms using PCR-RFLP in DNA from cryptorchid children (n=41) and healthy controls (n=42).
  • Statistical analysis comparing genotype and allele frequencies between cases and controls using the chi-square test.

Main Results:

  • Significant differences in genotype and allele frequencies for both CYP19 (rs2414096) and ESR2 (rs4986938) polymorphisms were observed between cryptorchidism patients and controls (p < 0.05).
  • The AA genotype and A allele of CYP19 (rs2414096) and ESR2 (rs4986938) may represent risk factors for cryptorchidism.
  • The GG genotype and G allele may be protective against cryptorchidism.

Conclusions:

  • Polymorphisms in CYP19 (rs2414096) and ESR2 (rs4986938) are significantly associated with cryptorchidism susceptibility.
  • These findings provide genetic evidence supporting the role of estrogen pathway variations in testicular descent.
  • Further research with larger cohorts and functional studies is needed to validate these results and elucidate underlying mechanisms.