陕南安康地区大竹园镇砷中毒患者血清PICP、PINP与COL1α1序列检测

目的 研究陕南安康地区大竹园镇高砷高氟高硒地区的砷皮肤损伤患者体内Ⅰ型胶原代谢状况.方法 采用病例对照研究,选取安康大竹园镇燃高砷高氟高硒石煤区29例砷皮肤损伤患者为病例组,西安市非砷中毒区30例为对照组.用石墨炉原子吸收光谱法测定砷和硒含量.氟离子选择性电极法测定氟含量,ELISA检测血清中Ⅰ型前胶原羧基前肽(PICP)和Ⅰ型前胶原氨基前肽(PINP)的含量,高保真PCR扩增-美国ABI3100测序仪作正反向直接测序检测Ⅰ型胶原α1多肽链(COL1α1)碱基突变.结果 在偏相关分析中控制其他影响因素后,PICP与血清氟呈弱负相关r=-0.4,P≤0.05),PINP与发氟呈中度负相关(r=-0.5,P<0.05),与发硒呈中度正相关(r=0.5,P<0.05).但血清PICP、PINP与COL1α1序列在病例组和对照组间无统计学显著性差异(P>0.05).结论 发氟和发硒是影响PINP代谢的主要影响因素,且发氟升高可使PINP降低而发硒升高町使PINP增高.但在陕南安康地区大竹园镇砷、氟和硒三元素联合性增高地区的砷皮肤损伤患者体内的PICP、PINP含量和Ⅰ型胶原α1基因序列却无显著性改变.提示在该地区,发硒增高引起PINP的升高可能抑制了由发氟升高引起PINP的降低.

Detection of serum PICP and PINP and COL1α1 DNA sequence analysis in patients with arsenic poisoning in Dazhuyuan Town, Ankang area in southern Shaanxi Province

Objective To investigate type I collagen metabolism in patients with arsenic poisoning in Dazhuyuan town, Ankang area in southern Shaanxi province known for high-level exposure to arsenic (As), fluoride (F) and selenium (Se). Methods This case-control study involved 29 patients with arsenic poisoning from Dazhuyuan, a town in Ankang area of Shaanxi province affected by coal-borne endemic arsenicosis. Thirty individuals without arsenic poisoning from Chang'an county of Xi'an city were included as the control...