X-ray-induced Expression Changes of TNFSF4 Gene in Human Peripheral Blood

This study examined ionizing radiation-induced tumor necrosis factor （ligand） superfamily, member 4 （TNFSF4） mRNA expression changes in human peripheral blood cells and their distribution in a normal population. The results showed that expression level of TNFSF4 mRNA exhibited a dose- dependent response after different irradiation doses, but that was independent of incubation time post-irradiation. Moreover, it was not affected by age and gender in 51 healthy donors. Our studies indicate that TNFSF4 can be considered as a candidate gene to develop a new biodosimeter.

夏播青贮玉米与饲用高粱青贮效果的评价

本研究为探索夏播饲草高效利用途径,采用单因素完全随机设计,分别用聚乙烯膜制作豫青贮23号青贮、夏播大卡饲用高粱青贮和两种原料以5∶5比例混合的裹包青贮,分别设为A组、B组和C组,每个处理3个重复。发酵65d时开封,比较青贮的发酵品质及营养成分。结果表明,A组、B组和C组的感官评价结果均为19分,属优等青贮,青贮香味浓、颜色青绿、结构清晰,家畜适口性强;A组、B组和C组的总挥发性脂肪酸(VFA)、乙酸(AA)、丙酸(PA)、异丁酸(IDA)、丁酸(DA)、异戊酸(IA)、戊酸(VA)等有机酸含量组间差异均不显著(P>0.05);B组的NH_(3)-N/TN值达9.18%,显著高于A组和C组(p<0.05);C组的NH_(3)-N/TN值为4.27%,显著低于A组和C组(P<0.05)。因此,混合青贮有利于降低饲用高粱在青贮发酵过程中蛋白的损失,改善青贮发酵品质。