LONG TERM SUPPLEMENTATION OF SE-ENRICHED MALT FOR THE HIGH RISK POPULATION OF LUNG CANCER: INHIBITION OF ULTRAVIOLET LIGHT AND BENZOaPYRENE INDUCED UNSCHEDULED AND SYNTHESIS OF PERIPHERAL LYMPHOCYTES

Se malt cakes containing 300μg selenium were taken up daily to men from high risk area in lung cancer and the influences of Ultraviolet (UV) and Benaopyrene (BαP) induced unscheduled DNA synthesis (UDS) were determined. The Se levels in serum, hair and activity of GSH-px were increased by 89%, 67% and 178%, respectively, after Se-supplementation for half year. In the UV treatment, the ratio of UDS was decreased from the mean values of 2. 47 in the control to 1. 61 (P<0. 05) in the Se-group, In the BaP treatment, furthermore, the elevated Se levels of 78% in serum and 83% in the hair accompanied with 56% high in activity of GSH-px were followed by the Se intake for one year, while the mean value of UDS was reduced from 2. 21 in the control to 1. 47(P< 0. 05) in the group of selenium tested. The blocking effects of UV irradiation and BaP treatment induced UDS of peripheral lymphocytes were showed in the Se-supplementation.     

硒预防病毒性肝炎的流行病学研究

病毒性肝炎是世界上危害人类生命健康较为严重的常见传染病。我国是肝炎发病率较高的国家,仅乙型肝炎患者就有2700万人,乙型肝炎表面抗原携带者约有一亿人。江苏省启东县是肝炎流行地区,甲型肝炎每隔4～5年暴发流行一次,乙型肝炎表面抗原(HBsAg)携带者为15％左右。严重地影响人们的工作、学习和生命。启东的流行病学调查结果表明,肝癌及乙型肝炎与硒关系较为密切。1980年我们对启东县永阳乡与西宁乡进行流行病学调查,发现永阳乡居民主粮硒含量较西宁乡低,而居民中乙型肝炎表面抗原阳性率及肝癌发生率均比西宁乡高,提示硒摄取量和肝炎、肝癌发生有一定关系。