|
The effect of different wave
lengths of ultraviolet radiation (UVa , UVb and UVc) for different
periods (0, 2, 5, 10 and 15 days) on albino mice testes was
investigated. Results obtained by this study revealed that animals
exposed to different radiation for different periods were suffered
considerable changes in sperm parameters (sperm count , sperm
abnormality and sperm death) and the radiation induce damage extended to
different testes tissues (seminiferous tubules, basement membranes and
germ cells). Significantly reduced sperm count associated with increased
sperm abnormality and sperm death percentage in Uv-exposed group as
compared with controls, substantially proves the ongoing damage effect
of Uv exposed group on testis tissues (necrosis, deformation in all
developmental sperm stages). It was found that when the UV-wave lengths
decreased (from 366-254nm) and the exposure period increased, the sperm
count decreased, the percentage of sperm abnormalities & death increased
. While the tissue damage more pronounced. These effects were found to
be due to the production of various reactive oxygen species (ROS) by the
ionization radiation in the treated mice. |
