一起氟乙酰胺蓄积性中毒分析

氟乙酰胺急性中毒时有发生 ,其中毒者临床表现与实验室诊断技术已为预防医学工作者所掌握 ,但氟乙酰胺蓄积性中毒十分罕见 ,经检索国内尚无个案报道。现就集宁市发生的一起氟乙酰胺蓄积性中毒分析报告如下。患者男性 6 3岁 ,2 0 0 1年 6月 2 0日由家属陪送入院 ,主诉神志有时不清 ,妄语 ,肢体阵发性抽搐 ,大小便失禁 ,视力模糊 ,病史已有 4个多月 ,院方即按颠痫收住入院 ,经过 1周对症治疗但疗效甚微 ,遂建议其转入精神病院 ,经精神病专家会诊 ,发现患者有接触鼠药史 ,于是要求卫生防疫部门协助检验。该病例系鼠药商贩 ,同时经销数种鼠药 ,…

Characterization and distribution of hepatitis B virus genotypes and subtypes in 4 provinces of China

Objective To determine the distribution and genetic relationship of hepatitis B virus (HBV) genotypes and subtypes. Methods HBV genotypes and subtypes were determined by PCR and DNA sequencing among 280 chronic HBV carriers in 25 counties of 4 provinces (Hunan, Guangxi, Henan and Hebei) in China. Results Genotype B, C and D were detected in these regions. Genotypes C and B were the majority genotypes of HBV with 190 out of 280 ( 67.9 %) genotype C, 82 ( 29.3 %) genotype B, and 8 ( 2.9 %) genotype D. Adr, adw2, ayr, ayw1, ayw2 and ayw3 subtypes were determined among these carriers. Adr and adw2 subtypes were the leading subtypes of HBV,taking up 64.3 % and 31.4 %, respectively.Adr subtype was completely encoded by genotype C while majority of adw2 subtype was encoded by genotype B.An average rate nucleotide substitutions of 2.94 was seen among 280 Chinese HBV sequences. The average rate of nucleotide substitutions of genotype B (adw2 subtype) was 5.63 ( 5.48 ), but only 1.6 ( 1.51 ) for genotype C (adr subtype). Conclusion The results suggested that there were significant differences in geographic distribution of HBV genotypes and subtypes; genotype B, in which mostly consistent with adw2 subtype, was a higher variable than genotype C (adr subtype).