Animal model of goat cleft palate made by uterine cavitary operations

目的以杂交波尔山羊为实验对象,进行宫内手术制备先天性腭裂动物模型,为研究先天性腭裂畸形对面中部发育的影响及早期宫内修复提供适合的动物模型。方法取20只8～12月龄雌性杂交波尔山羊,体重35～55kg,以配种日期定为孕0d,于孕30d经B超确认怀孕后随机分为两组。实验组14只于孕65d行宫内手术,形成胎羊口鼻腔穿通腭裂;对照组6只不作处理,作为正常对照。于孕120d及出生后1、3个月,行大体观察以及头颅CT三维重建,测量上颌最前磨牙前方的两侧凹陷处间距(PPMM),并以此线为基准测量上颌骨最前点至此线的垂直距离(APMM)。结果术后实验组山羊因并发症死亡2只,流产3只,最终造模成功9只;手术成功...To investigate the effect of cleft palate on the development of the mid-part of the face so as to provide an optimum animal model for the fetal cleft repair.Twenty female Boer hybrid goats were selected, aging from 8 to 12 months and weighing from 35 to 55 kg. The mating day was identified as 0 day of pregnancy. The goats were diagnosed with pregnancy by the B-ultrasound examination at 30 days, and were allocated into experimental group (n=14) and control group (n=6). In experimental group, uterine cavitary operation was performed at 65 days of pregnancy to form cleft palate which was a fissure between oral and nasal cavity; no treatment was given as the control group. At 120 days of pregnancy, and after 1 month and 3 months of birth, the gross observation and 3-dimensional skull CT reconstruction were performed; and the maxillary bone width named as PPMM and the maxillary bone length named as APMM were measured.After operation, 2 goats died of infection, miscarriage occurred in 3 goats; 9 goats were included into the experiment. The operation success rate was 64.3%. In experimental group, maxillary dysplasia occurred in all the fetal goats at 120 days of pregnancy, and more obvious maxillary dysplasia was observed at 1 month and 3 months after birth; no maxillary dysplasia occurred in control group. There were significant differences in PPMM and APMM between 2 groups at different time points (P < 0.05). In experimental group, the lambs had poor chewing function, and died of pulmonary infection after aspiration at 1-4 months after birth.The surgical procedure for partial ablation of secondary primitive palate in the midline could make the model of cleft palate.PubMed中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)0091113-11152