Chong, Ho Phin and Tan, Kae Yi and Liu, Bing-Sin and Sung, Wang-Chou and Tan, Choo Hock (2022) Cytotoxicity of Venoms and Cytotoxins from Asiatic Cobras (Naja kaouthia, Naja sumatrana, Naja atra) and Neutralization by Antivenoms from Thailand, Vietnam, and Taiwan. Toxins, 14 (5). ISSN 2072-6651, DOI https://doi.org/10.3390/toxins14050334.
Full text not available from this repository.Abstract
Envenoming by cobras (Naja spp.) often results in extensive local tissue necrosis when optimal treatment with antivenom is not available. This study investigated the cytotoxicity of venoms and purified cytotoxins from the Monocled Cobra (Naja kaouthia), Taiwan Cobra (Naja atra), and Equatorial Spitting Cobra (Naja sumatrana) in a mouse fibroblast cell line, followed by neutralization of the cytotoxicity by three regional antivenoms: the Thai Naja kaouthia monovalent antivenom (NkMAV), Vietnamese snake antivenom (SAV) and Taiwanese Neuro bivalent antivenom (NBAV). The cytotoxins of N. atra (NA-CTX) and N. sumatrana (NS-CTX) were identified as P-type cytotoxins, whereas that of N. kaouthia (NK-CTX) is S-type. All venoms and purified cytotoxins demonstrated varying concentration-dependent cytotoxicity in the following trend: highest for N. atra, followed by N. sumatrana and N. kaouthia. The antivenoms moderately neutralized the cytotoxicity of N. kaouthia venom but were weak against N. atra and N. sumatrana venom cytotoxicity. The neutralization potencies of the antivenoms against the cytotoxins were varied and generally low across NA-CTX, NS-CTX, and NK-CTX, possibly attributed to limited antigenicity of CTXs and/or different formulation of antivenom products. The study underscores the need for antivenom improvement and/or new therapies in treating local tissue toxicity caused by cobra envenomings.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [Grant No:ST011-2020], National Health Research Institutes - Taiwan [Grant No:IV-111-PP-25] |
| Uncontrolled Keywords: | Cytotoxin; Chinese cobra; Monocled cobra; Equatorial spitting cobra; In vitro assay |
| Subjects: | Q Science > Q Science (General) |
| Divisions: | Faculty of Medicine |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 11 Oct 2023 01:45 |
| Last Modified: | 11 Oct 2023 01:45 |
| URI: | http://eprints.um.edu.my/id/eprint/42223 |
Actions (login required)
 |
View Item |
