An experiment was performed to isolate the small atypical mitochondria produced during the irradiation of normal mitochondria with an HeNe laser. Rat liver mitochondria were irradiated with a low-power continuous-wave HeNe laser (energy dose, 5 J cm-2), followed by isolation using a sucrose gradient. In the irradiated sample, two bands were observed, one corresponding to normal mitochondria and the other to atypical mitochondria. Certain biochemical features of the mitochondria were investigated: mitochondrial enzyme activity and the presence of DNA and RNA were demonstrated. Hybridization experiments carried out with labelled mitochondrial probes, containing the genes for cytochrome oxidase subunit I and 12S rRNA, confirmed the mitochondrial nature of the isolated RNA. © 1991.
Helium-neon laser irradiation of rat liver mitochondria gives rise to a new subpopulation of mitochondria: Isolation and first biochemical characterization
PASTORE, DONATO;
1991-01-01
Abstract
An experiment was performed to isolate the small atypical mitochondria produced during the irradiation of normal mitochondria with an HeNe laser. Rat liver mitochondria were irradiated with a low-power continuous-wave HeNe laser (energy dose, 5 J cm-2), followed by isolation using a sucrose gradient. In the irradiated sample, two bands were observed, one corresponding to normal mitochondria and the other to atypical mitochondria. Certain biochemical features of the mitochondria were investigated: mitochondrial enzyme activity and the presence of DNA and RNA were demonstrated. Hybridization experiments carried out with labelled mitochondrial probes, containing the genes for cytochrome oxidase subunit I and 12S rRNA, confirmed the mitochondrial nature of the isolated RNA. © 1991.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
