RESUMO
Adenoviruses cause a wide variety of human infectious diseases. Adenoviral conjunctivitis and epidemic keratoconjunctivitis are commonly associated with human species D adenoviruses. Currently, there is no sufficient or appropriate treatment to counteract these adenovirus infections. Thus, there is an urgent need for new etiology-directed therapies with selective activity against human adenoviruses. To address this problem, the adenoviral early genes E1A and E2B (viral DNA polymerase) seem to be promising targets. Here, we propose an effective approach to downregulate the replication of human species D adenoviruses by means of RNA interference. We generated E1A expressing model cell lines enabling fast evaluation of the RNA interference potential. Small interfering RNAs complementary to the E1A mRNA sequences of human species D adenoviruses mediate significant suppression of the E1A expression in model cells. Furthermore, we observed a strong downregulation of replication of human adenoviruses type D8 and D37 by small hairpin RNAs complementary to the E1A or E2B mRNA sequences in primary human limbal cells. We believe that our results will contribute to the development of efficient anti-adenoviral therapy.
RESUMO
During the study of diode laser radiation effect in micropulse mode on culture cells of human retinal pigment epithelium it was revealed that the quota of dead cells was a minimum. Besides, a certain conformity between dead cells quota and parameter characteristics of laser radiation. Based on the performed experimental study it was revealed that for a work using the Iris Medical IQ 810 diode laser in the micropulse mode following parameters: duration of pulse set--300ms, duration of function--9.1%, power--750mW are safe for retinal pigment epithelium cells. Rationales of safety in application of the infrared diode laser radiation in micropulse mode in clinic for treatment of age-related macular degeneration (AMD) exampled by cell culture of human retinal pigment epithelium.