Bielanski A, Dubuc C, Hare WC, Myers DJ, Eaglesome MD. Inactivation of bovine herpesvirus-1 and bovine viral diarrhea virus in association with preimplantation bovine embryos using photosensitive agents.
Theriogenology 1992;
38:633-44. [PMID:
16727166 DOI:
10.1016/0093-691x(92)90026-n]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/1991] [Accepted: 06/09/1992] [Indexed: 10/26/2022]
Abstract
Hematoporphyrin (HP), hematoporphyrin derivative (HPD), and thiopyronine (TP) are photosensitive agents (PSA) that have a germicidal effect when they are activated by light: helium neon laser (He/Ne) light (HP, HPD), white light (HP, HPD), and yellow-green light (TP). Experiments were conducted with appropriate controls to determine the effect of photosensitive agents a) for inactivating bovine herpesvirus-1 (BHV-1; titre 10(6) TCID50/ml) and bovine viral diarrhea virus (BVDV; titre 10(6) TCID50/ml); b) for disinfecting Day-7, zona pellucida-intact (ZP-I) bovine embryos that had been exposed to BHV-1 (titre 10(6) TCID50/ml) or BVDV (titre 10(6) TCID50/ml); and c) on the in vitro development of embryos. Exposure to HP, HPD and TP followed by light irradiation inactivated BHV-1 and BVDV. Embryos exposed to BHV-I were disinfected by HP or HPD (5 microg/ml) in combination with He Ne light, or by HP or HPD (10 microg/ml) in combination with white light. Embryos exposed to BVDV were disinfected by HPD (5 and 10 microg/ml) followed by He Ne or white light irradiation. Exposure of embryos to light alone or to light and HP or HPD had no detrimental effect on their in vitro development; however, exposure of embryos to TP (5 microg/ml) followed by irradiation caused embryonic degeneration. Exposure of embryos to 5 microg of HPD followed by He Ne light, or 10 microg/ml of HP or HPD, followed by white light, is simple methods of disinfecting them of BHV-I and BVDV.
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