The effect of light on calcium transport was studied. Bull sperm cells were irradiated with an HeNe (630 mm) laser and a 780 nm diode laser at various energy doses, and 45Ca2+ uptake was measured by the filtration technique. It was found that there is an accelerated Ca2+ transport in the irradiated cells, which means that laser light can stimulate Ca2+ exchange through the cell membrane. This may cause transient changes in the cytoplasmic Ca2+ concentration which, in spermatozoa, has a regulatory role in control of motility and acrosome reaction, and in other cells can trigger mitosis.
|Number of pages||5|
|Journal||Journal of Photochemistry and Photobiology B: Biology|
|State||Published - 15 Sep 1992|
- Ca ion transport
- bull sperm cells