ArticleReproductive sciences (Thousand Oaks, Calif.)2023
Genetic Effects of ITPK1 Polymorphisms on the Risk of Neural Tube Defects: a Population-Based Study.
Article in Reproductive sciences (Thousand Oaks, Calif.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Inositol is closely related to the occurrence of neural tube defects (NTDs). Inositol 1, 3, 4-trisphosphate 5/6-kinase (ITPK1) gene encoded an essential regulatory enzyme ITPK1, which is involved in inositol metabolism and has a critical role in the development of neural tube and axial mesoderm. It had been reported that some polymorphisms of critical genes in inositol pathways, including ITPK1, were associated with NTDs in Chinese pregnant women; however, the association between fetus ITPK1 polymorphisms and NTDs had not been reported. In a high incidence of NTDs region of China, a case-control study was performed to evaluate the association between fetal ITPK1 polymorphisms and NTDs. The ITPK1 polymorphisms were genotyped by iPLEX® Gold assay. Inositol levels in fetus brain tissues were analyzed. Three genetic polymorphisms of fetus ITPK1's, including rs3818175, rs2295394, and rs4586354, were statistically associated with spina bifida (NTD subtypes). A higher risk of spina bifida was associated with genotype GG of rs3818175, genotype CC of rs4586354, and genotype TT of rs2295394 (OR = 2.66, 95% CI [1.17-6.05], P = 0.017; OR = 2.22, 95% CI [1.02-4.80], P = 0.041; and OR = 2.33, 95% CI [1.00-5.48], P = 0.047), when compared with the other wild-type genotypes CC, TT, and CC, respectively. Decreased brain inositol level was found in NTDs fetuses, compared to normal controls. Inositol levels were found to significantly decrease with rs2295394 (CC genotype), rs4586354 (TT genotype), and rs3818175 (GC genotype) (P < 0.05). The polymorphisms of fetus ITPK1 were associated with the incidence of NTDs and might be a genetic risk factor for spina bifida.
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