Hematotoxic Effect of Formaldehyde in Mice / 环境与健康杂志

ABSTRACT

Objective To study hematotoxic effect of formaldehyde in mice.Methods Sixty healthy KM mice were randomly divided into a control group and three formaldehyde treated groups named a low level group,a moderate level group and high level group.Themice in the experimental groups were exposed to formaldehyde by intraperitoneal injection,once a day,for three weeks at the dose of 0.2,2.0 and 20 mg/kg bw respectively.Five mice were sacrificed at the 1st,2nd,3rd week of formaldehyde treatment and the blood samples were collected.The red blood cell counts,white blood cell counts and the hemoglobin content in the blood in mice were determined.Results During the experimental period,the body weight of mice in low level group at the 1st and 3rd week decreased significantly compared with the control group.The organ coefficient of the kidney in the moderate level group,high level group at the 1st week were higher than that of control group.The organ coefficient of the spleen in moderate level group at the 2nd week,in all three formaldehyde treated groups at the 3rd week was lower than that of control group.The organ coefficient of the heart in high level group at the 3rd week also decreased markedly in comparison to that of control group.The hemoglobin content in high level group at the 3rd week was lower than that of the control group.The red blood cell counts in three experiment groups at the 1st week and in high level group at the 2nd week decreased markedly compared with the control group.The white blood cell counts were seen much lower in low level group at the first two weeks,in moderate level group at the 1st week and in high level group in the experimental period compared with the control group.Conclusion Formaldehyde exposure has some hematotoxic effects in mice.