Abstract
The protective and treated soybean dietary against lead toxicity in male rats was investigated in the bones and the hormones of the reproductive system. Sixty adult male rats were divided into the following groups: Group I: 30 rats fed on standard casein were divided into three equal subgroups; Group Ia: control casein, Group Ib: ( casein- protected) rats fed on casein before lead intoxication, Group Ic: ( casein- treated) rats fed on casein after lead intoxication; Group II: 30 rats fed on standard soybean. These rats were also divided into three equal subgroups; Group IIa: control soybean, Group IIb: ( soybean- protected) rats fed on soybean before lead intoxication, Group IIc: ( soybean- treated) rats fed on soybean after lead intoxication. The results revealed that the accumulation of lead in the soft tissues ( liver, kidney and testis) was much greater in the protective groups than in the curative ones. There was a significant increase in the femoral bone mass density ( BMD) in the soybean protected group when compared with either the soybeantreated or the casein- protected group. Serum testosterone significantly increased in the soybean- treated group compared with the soybean- protected group. Serum luteinizing hormone ( LH) did not change between groups. It is concluded that the soybean diet ameliorated bone and testis intoxicated with lead.