Ga-As (808 nm) laser irradiation enhances ATP production in human neuronal cells in culture.
OBJECTIVE
The aim of the present study was to investigate whether Ga-As laser irradiation can enhance adenosine triphosphate (ATP) production in normal human neural progenitor (NHNP) cells in culture.


METHODS
NHNP were grown in tissue culture and were treated by Ga-As laser (808 nm, 50 mW/cm(2), 0.05 J/cm(2)), and ATP was determined at 10 min after laser application.


RESULTS
The quantity of ATP in laser-treated cells was 7513 +/- 970 units, which was significantly higher (p < 0.05) than the non-treated cells, which comprised 3808 +/- 539 ATP units.


CONCLUSIONS
Laser application to NHNP cells significantly increases ATP production in these cells. These findings may explain the beneficial effects of low-level laser therapy (LLLT) in stroked rats. Tissue culture of NHNP cells might offer a good model to study the mechanisms associated with promotion of ATP production in the nervous system by LLLT.
Oron
U
U
Photothera Inc., Carlsbad, California, USA. oronu@post.tau.ac.il
Ilic
S
S
De Taboada
L
L
Streeter
J
J
D000255:Adenosine Triphosphate / Q000096:biosynthesis* / Q000528:radiation effects; D002478:Cells, Cultured; D006801:Humans; D028022:Low-Level Light Therapy; D009474:Neurons / Q000737:chemistry / Q000166:cytology* / Q000528:radiation effects; D013234:Stem Cells / Q000737:chemistry / Q000528:radiation effects*
D000255:Adenosine Triphosphate