Download PDF
CC BY 4.0 · Rev Bras Ginecol Obstet 2021; 43(11): 805-810
DOI: 10.1055/s-0041-1736342
Original Article
Obstetrics

Association Between PON1 (L55M and Q192R) Genetic Polymorphism and Recurrent Pregnancy Loss in North Indian Women Exposed to Pesticides

Associação entre o polimorfismo genético PON1 (L55M e Q192R) e a perda recorrente de gravidez em mulheres do norte da Índia expostas a pesticidas
Shyam Pyari Jaiswar 
1   Department of Obstetrics and Gynecology, King George's Medical University, Lucknow, Uttar Pradesh, India
,
Apala Priyadarshini 
1   Department of Obstetrics and Gynecology, King George's Medical University, Lucknow, Uttar Pradesh, India
,
Apurva Singh 
1   Department of Obstetrics and Gynecology, King George's Medical University, Lucknow, Uttar Pradesh, India
,
Mohd Kalim Ahmad 
2   Department of Biochemistry, KGMU, Lucknow, Uttar Pradesh, India
,
Sujata Deo 
1   Department of Obstetrics and Gynecology, King George's Medical University, Lucknow, Uttar Pradesh, India
,
Pushpa Sankhwar 
1   Department of Obstetrics and Gynecology, King George's Medical University, Lucknow, Uttar Pradesh, India
› Author Affiliations Funding/Acknowledgments The authors would like to thank UP-CST for the grant (CST/SERPD/D-2243).
› Further Information
   Permissions and Reprints
Zoom Image

Abstract

Objective The aim of the present study was to examine the relation between the PON1 polymorphisms and recurrent pregnancy loss (RPL).

Methods In a cross-sectional study, blood samples were collected from 100 females. DNA was extracted and PON1 genotypes were determined by polymerase chain reaction (PCR) amplification.

Results Regarding PON1 L55M, the mutated allele (M) frequency was found in 70.5% in RPL and in 53.5% in controls; the M allele was significantly associated with an increased risk of RPL (adjusted odds ratio [ORadj] = 2.07; 95% confidence interval [CI]; p < 0.001). However, regarding PON1 Q192R, the R mutated allele frequency was found in 28.5% in RPL and in 33% in controls. The R allele did not show any risk for RPL (ORadj 0.81; 95%CI; p = 0.329).

Conclusion The present study suggests that there is an effect of genetic polymorphism on RPL and provides additional evidence that combines with the growing information about the ways in which certain PON1 genotypes can affect the development of the fetus in the uterus.

Resumo

Objetivo O objetivo deste estudo foi examinar a relação entre os polimorfismos PON1 e perda recorrente de gravidez PRG.

Métodos Em um estudo transversal, foram coletadas amostras de sangue de 100 mulheres. O DNA foi extraído e os genótipos PON1 foram determinados por amplificação por PCR.

Resultados Com relação ao PON1 L55M, a frequência do alelo mutado (M) foi encontrada em 70,5% no PRG e em 53,5% nos controles; o alelo M foi significativamente associado a um risco aumentado de PRG (odds radio ajustado [ORadj] =2,07; intervalo de confiança [IC] 95%; p < 0,001). No entanto, em relação ao PON1 Q192R, a frequência do alelo mutado R foi encontrada em 28,5% no PRG e em 33% nos controles. O alelo R não mostrou qualquer risco para PRG (ORadj 0,81; IC 95; p = 0,329).

Conclusão O presente estudo sugere que há um efeito do polimorfismo genético sobre PRG e fornece evidências adicionais que se combinam com as informações crescentes sobre as maneiras pelas quais certos genótipos PON1 podem afetar o desenvolvimento do feto no útero.

Keywords

recurrent pregnancy loss - paraoxonase 1 - organophosphate - pesticides - oxidative stress

Palavras-chave

perda de gravidez recorrente - paraoxonase 1 - organofosfato - pesticidas - estresse oxidativo

Contributions

Jaiswar S. P.: conceptualization, methodology, project administration, supervision. Priyadarshini A.: writing, review and editing. Singh A.: investigation, writing of the original draft, data curation, formal analysis. Ahmad M. K.: validation, doftware, resources. Deo S.: supervision. Sankhwar P.: data curation.




Publication History

Received: 21 December 2020

Accepted: 03 September 2021

Article published online:
06 December 2021

© 2021. Federação Brasileira de Ginecologia e Obstetrícia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

Thieme Revinter Publicações Ltda.
Rua do Matoso 170, Rio de Janeiro, RJ, CEP 20270-135, Brazil