ABSTRACT
Objective To investigate the anti-mutation of Chinese medicinal herb Herba Leonuri and its effect on T lymphocyte proliferation in spleen.Methods The micronucleus test of mouse bone marrow cell(MNT) :thirty mice were divided into six groups(n= 5),negative control(NS),cyclophosphamide group(CP 3.0 mg?kg-1),Herba Leonuri antimutagenesis groups(Herba Leonuri with dosages of 1.0,2.0,4.0,8.0 g?kg-1+CP30 mg?kg-1).The improved method was used to detect the micronuclei frequency.Lymphocyte transformation test:twenty-four mice were divided into four groups(n=6),saline control,CP control(30 mg?kg-1),Herba Leonuri(2.0 g?kg-1),Herba Leonuri +CP(2.0 g?kg-1 Herba Leonuri +CP 30 mg?kg-1).MTT assay was used to calculate the stimulation index(SI).Results The micronuclei frequencies in Herba Leonur 2.0,4.0,8.0 g?kg-1 groups were lower than that in CP group(P
ABSTRACT
Objective To examine the effects of formaldehyde on the process of sperm development and reproductive capacity in male mice and the micronucleus rate of liver cells from offspring.Methods The mice were randomly divided into negative control group(NC),formaldehyde exposed group and positive control group (PC).The exposed dose was 21 mg?m-3 (1/24 LC50),42 mg?m-3 (1/12 LC50) and 84 mg?m-3 (1/6 LC50),respectively. 12 male mice were included in each group.Male mice from different formaldehyde exposed groups were inhaled with formaldehyde for 2 h one day,6 d each week,lasted for 13 weeks.The aberration rate of sperm in male mice and the micronucleus rate of liver cells from offspring were observed,and the reproductive capacity of male mice was detected by dominant lethal test.Results The aberration rates of sperm in mice from different formaldehyde exposed groups were significantly higher than that in negative control (P