Effects of OPRM1 A118G polymorphism on epidural analgesia with fentanyl during labor: a meta-analysis

Emerging evidence has shown that the most common polymorphism (A118G; rs1799971 A>G) in the μ-opioid receptor (OPRM1) gene may influence the response to labor analgesia, but individually published studies showed inconclusive results. This meta-analysis aimed to derive a more precise estimation of...

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Veröffentlicht in:Genetic testing and molecular biomarkers 2013-10, Vol.17 (10), p.743-749
Hauptverfasser: Song, Zheming, Du, Boxiang, Wang, Kai, Shi, Xueyin
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creator Song, Zheming
Du, Boxiang
Wang, Kai
Shi, Xueyin
description Emerging evidence has shown that the most common polymorphism (A118G; rs1799971 A>G) in the μ-opioid receptor (OPRM1) gene may influence the response to labor analgesia, but individually published studies showed inconclusive results. This meta-analysis aimed to derive a more precise estimation of the effects of the OPRM1 A118G polymorphism on epidural analgesia with fentanyl during labor. A literature search was conducted on PubMed, Embase, Web of Science, and China BioMedicine databases before April 1st, 2013. The crude standardized mean difference (SMD) or odds ratio (OR) with 95% confidence interval (CI) was calculated. Six clinical studies were included with a total 838 women who received epidural analgesia with fentanyl during labor. The meta-analysis results indicated that women carrying the G allele (AG+GG) of the OPRM1 A118G polymorphism required less fentanyl doses to achieve adequate pain relief compared with those with the AA homozygote (SMD=-0.24, 95% CI [-0.44, -0.03], p=0.022). The 118G variant was associated with a decreased ED50 of fentanyl for labor analgesia (SMD=-1.56, 95% CI [-1.97, -1.15], p
doi_str_mv 10.1089/gtmb.2013.0282
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This meta-analysis aimed to derive a more precise estimation of the effects of the OPRM1 A118G polymorphism on epidural analgesia with fentanyl during labor. A literature search was conducted on PubMed, Embase, Web of Science, and China BioMedicine databases before April 1st, 2013. The crude standardized mean difference (SMD) or odds ratio (OR) with 95% confidence interval (CI) was calculated. Six clinical studies were included with a total 838 women who received epidural analgesia with fentanyl during labor. The meta-analysis results indicated that women carrying the G allele (AG+GG) of the OPRM1 A118G polymorphism required less fentanyl doses to achieve adequate pain relief compared with those with the AA homozygote (SMD=-0.24, 95% CI [-0.44, -0.03], p=0.022). The 118G variant was associated with a decreased ED50 of fentanyl for labor analgesia (SMD=-1.56, 95% CI [-1.97, -1.15], p&lt;0.001). The analgesia satisfaction in women carrying the G allele (AG+GG) was higher than those with the AA homozygote (SMD=0.22, 95% CI [0.05, 0.39], p=0.012). However, there were no statistically significant differences between an AA homozygote and a G carrier (AG+GG) in the incidence of nausea and vomiting (OR=1.99, 95% CI [0.88, 4.52], p=0.101). In conclusion, the current meta-analysis indicates that women carrying the G allele (AG+GG) of OPRM1 A118G polymorphism may have a good response to epidural analgesia with fentanyl during labor. 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The analgesia satisfaction in women carrying the G allele (AG+GG) was higher than those with the AA homozygote (SMD=0.22, 95% CI [0.05, 0.39], p=0.012). However, there were no statistically significant differences between an AA homozygote and a G carrier (AG+GG) in the incidence of nausea and vomiting (OR=1.99, 95% CI [0.88, 4.52], p=0.101). In conclusion, the current meta-analysis indicates that women carrying the G allele (AG+GG) of OPRM1 A118G polymorphism may have a good response to epidural analgesia with fentanyl during labor. 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subjects Alleles
Analgesia, Epidural
Analgesics, Opioid - therapeutic use
Clinical Trials as Topic
Female
Fentanyl - therapeutic use
Homozygote
Humans
Labor, Obstetric - drug effects
Labor, Obstetric - genetics
Pain, Postoperative - drug therapy
Pain, Postoperative - genetics
Polymorphism, Genetic
Pregnancy
PubMed
Receptors, Opioid, mu - genetics
title Effects of OPRM1 A118G polymorphism on epidural analgesia with fentanyl during labor: a meta-analysis
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