科研之友
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摘要
Introduction: Lifelong premature ejaculation (LPE) is characterized by persistently shorter intravaginal ejaculation latency time (IELT) than found acceptable by the patient or his partner. It has been postulated to be a neurobiological dysfunction with genetic vulnerability and is related to disturbances of central serotonin (5-hydroxytryptamine, 5-HT) neurotransmission and 5-HT receptor function. Aim: To investigate the relationship between the C-759T and G-697C polymorphisms of the 5-HT2C receptor and LPE. Methods: A prospective study was conducted in 106 Han Chinese men with LPE, characterized by IELT of less than 1 min, and 84 healthy controls with IELT of more than 3 min. All subjects were genotyped for the C-759T and G-697C polymorphisms located in the promoter region of the 5-HT2C receptor. The frequencies of genotypes and single nucleotide mutations were compared between the two groups. Results: Three genotypes were detected both in the men with LPE and in the control group: -759C/-697G, -759T/-697C, and -759C/ -697C. Genotype -759T/-697G was not detected. The frequency of genotype -759T/-697C was higher in patients with LPE than in the control group (30.2 vs. 11.9%, p<0.05), whereas the frequency of genotype -759C/-697G was lower in patients with LPE than in the control group (66.0 vs. 83.3%, p<0.05). No difference was found for genotype -759C/ -697C between the two groups. Mutations at -759T and -697C were more frequent in patients than in the control group (-759T: 30.2 vs. 13.3%, p<0.05; -697C:30.4 vs. 16.7%, p<0.05, respectively). Conclusions: Our findings indicated that polymorphisms in the 5-HT2C receptor gene are associated with LPE, and men who carry the -759T or -697C genotype have increased odds of premature ejaculation. Further investigation in this field is necessary.
- 出版日期2010
- 单位四川大学
