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本文观察了CS_2对大鼠胚胎发育及血清锌、铜含量的影响。发现胚胎着床前死亡率升高,胎鼠皮下出血、心包淤血及骨骼骨化不金的发生率增高。但无明显的致畸效应。14.1及103.9ng/m~3的CS_2对妊娠大鼠的血清锌、铜含量无明显影响。说明CS_2对大鼠的胚胎毒性与其对妊娠大鼠血清锌、铜含量的影响之间没有关联。 相似文献
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This study attempt, to evaluate the remote effects of carrying and moving heavy loads on the reproductive system and maternal function of female workers. 364 married women employed in various types of occupation involving carrying and moving different weights were subjects inducted in this study. The workers were divided into light load group (less than 20 kg) and heavy load group (greater than 20 kg) according to weight carried by workers at each time. 267 married sales women who worked in standing posture and 183 married art and craft factory workers who worked in sitting posture were selected as control. Histories of menstruation, pregnancy and childbirth among the workers were recorded. The results showed that no significant difference of prevalence of disturbances of menstruation between weight carrying and control groups was found. However, there was a tendency to increasing of prevalence of pelvic infection with the weight carrying group, by gynecological examination. The incidence of premature birth in the heavy load group (7.0%) was higher than that of the light load group (3.4%) as well as that of the art workers, but they are not statistically significant. The position of uterine cervix was lower in the heavy load group by measuring the distances of cervix to edge of vaginal membrane. 相似文献
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<正> 三、女职工接触的常见有害职业因素的分级评价根据对267个工人数较多工厂的抽样调查结果,女工接触较多的有害因素见表3. 相似文献
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二硫化碳对女工生殖结局影响的研究 总被引:18,自引:6,他引:12
以河北、河南、辽宁、湖北四个化纤厂接触CS_2的已婚女工682人为观察对象,以同地区棉纺厂已婚女工745人为对照组,应用历史性前瞻的方法,进行了生育史的调查。接触组妊娠次数1112次,对照组为1494次。结果,子代出生缺陷发生率接触组为26.44‰,显著高于对照组(13.07‰),RR2.02,95%可信限1.13~3.60,P<0.025。在调正了被动吸烟及胎次等可能的混杂因素后,经Mentcl-Haenszel 法检验,两组间仍有显著差异,X~2-MH 5,865,P<0.05;OR-MH 2.058,95%可信限1.148~3.692,SRR 2.139。但未见有特异畸形出现。 相似文献
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通过回顾性群组研究,对女司乘人员的705次妊娠及对照组女职工的737次妊娠的妊娠经过和结局进行比较。结果表明女司乘人员自然流产率为8.2%,显著高于对照组,RR1.8,95%可信限1.192-2.867。在调整了可能的混杂因素吸烟,经Mante-Haenszel法检验结果,ORM-H1.92,95%可信限1.21-3.06,X^2M-H8.09,P〈0.004,差异仍具有显著性 相似文献
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维生素A和硫酸镉可显著抑制中国仓鼠V79细胞代谢协作.维生素C则不抑制,预测可靠性初步评价表明,V79细胞代谢协作试验预测致畸性的敏感性为0.75,特异性为0.62,提示本试验有助于预测以抑制间隙接合细胞间通讯为机理的致畸物.可作为一个重要的补充试验被选入预测致畸物的最佳试验组。 相似文献
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