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Cross neutralization of common Southeast Asian viperid venoms by a Thai polyvalent snake antivenom (Hemato Polyvalent Snake Antivenom).
Acta Trop. 2014 Apr; 132:7-14.AT

Abstract

Snake envenomation is a serious public health threat in many rural areas of Asia and Africa. Antivenom has hitherto been the definite treatment for snake envenomation. Owing to a lack of local production of specific antivenom, most countries in these regions fully depend on foreign supplies of antivenoms. Often, the effectiveness of the imported antivenoms against local medically important species has not been validated. This study aimed to assess cross-neutralizing capacity of a recently developed polyvalent antivenom, Hemato Polyvalent Snake Antivenom (HPAV), against venoms of a common viper and some pit vipers from Southeast Asia. Neutralisation assays showed that HPAV was able to effectively neutralize lethality of the common Southeast Asian viperid venoms examined (Calloselasma, Crytelytrops, Popeia, and Daboia sp.) except for Tropidolaemus wagleri venom. HPAV also effectively neutralized the procoagulant and hemorrhagic activities of all the venoms examined, corroboratively supporting the capability of HPAV in neutralizing viperid venoms which are principally hematoxic. The study also indicated that HPAV fully prevented the occurrence of hematuria and proteinuria in mice envenomed with Thai Daboia siamensis venom but was only partially effective against venoms of Myanmar D. siamensis. Thus, HPAV appears to be useful against its homologous venoms and venoms from Southeast Asian viperids including several medically important pit vipers belonging to the Trimeresurus complex. Nevertheless, the effectiveness of HPAV as a paraspecific antivenom for treatment of viperid envenomation in Southeast Asian region requires further assessment from future clinical trials.

Authors+Show Affiliations

Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.Queen Saovabha Memorial Institute, Rama IV Road, Bangkok, Thailand.Queen Saovabha Memorial Institute, Rama IV Road, Bangkok, Thailand.Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia. Electronic address: tanngethong@yahoo.com.sg.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24384454

Citation

Leong, Poh Kuan, et al. "Cross Neutralization of Common Southeast Asian Viperid Venoms By a Thai Polyvalent Snake Antivenom (Hemato Polyvalent Snake Antivenom)." Acta Tropica, vol. 132, 2014, pp. 7-14.
Leong PK, Tan CH, Sim SM, et al. Cross neutralization of common Southeast Asian viperid venoms by a Thai polyvalent snake antivenom (Hemato Polyvalent Snake Antivenom). Acta Trop. 2014;132:7-14.
Leong, P. K., Tan, C. H., Sim, S. M., Fung, S. Y., Sumana, K., Sitprija, V., & Tan, N. H. (2014). Cross neutralization of common Southeast Asian viperid venoms by a Thai polyvalent snake antivenom (Hemato Polyvalent Snake Antivenom). Acta Tropica, 132, 7-14. https://doi.org/10.1016/j.actatropica.2013.12.015
Leong PK, et al. Cross Neutralization of Common Southeast Asian Viperid Venoms By a Thai Polyvalent Snake Antivenom (Hemato Polyvalent Snake Antivenom). Acta Trop. 2014;132:7-14. PubMed PMID: 24384454.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cross neutralization of common Southeast Asian viperid venoms by a Thai polyvalent snake antivenom (Hemato Polyvalent Snake Antivenom). AU - Leong,Poh Kuan, AU - Tan,Choo Hock, AU - Sim,Si Mui, AU - Fung,Shin Yee, AU - Sumana,Khomvilai, AU - Sitprija,Visith, AU - Tan,Nget Hong, Y1 - 2013/12/30/ PY - 2013/09/06/received PY - 2013/12/20/revised PY - 2013/12/21/accepted PY - 2014/1/4/entrez PY - 2014/1/5/pubmed PY - 2014/10/28/medline KW - Cross neutralization KW - Hemato polyvalent antivenoms KW - Southeast Asian viper and pit vipers SP - 7 EP - 14 JF - Acta tropica JO - Acta Trop VL - 132 N2 - Snake envenomation is a serious public health threat in many rural areas of Asia and Africa. Antivenom has hitherto been the definite treatment for snake envenomation. Owing to a lack of local production of specific antivenom, most countries in these regions fully depend on foreign supplies of antivenoms. Often, the effectiveness of the imported antivenoms against local medically important species has not been validated. This study aimed to assess cross-neutralizing capacity of a recently developed polyvalent antivenom, Hemato Polyvalent Snake Antivenom (HPAV), against venoms of a common viper and some pit vipers from Southeast Asia. Neutralisation assays showed that HPAV was able to effectively neutralize lethality of the common Southeast Asian viperid venoms examined (Calloselasma, Crytelytrops, Popeia, and Daboia sp.) except for Tropidolaemus wagleri venom. HPAV also effectively neutralized the procoagulant and hemorrhagic activities of all the venoms examined, corroboratively supporting the capability of HPAV in neutralizing viperid venoms which are principally hematoxic. The study also indicated that HPAV fully prevented the occurrence of hematuria and proteinuria in mice envenomed with Thai Daboia siamensis venom but was only partially effective against venoms of Myanmar D. siamensis. Thus, HPAV appears to be useful against its homologous venoms and venoms from Southeast Asian viperids including several medically important pit vipers belonging to the Trimeresurus complex. Nevertheless, the effectiveness of HPAV as a paraspecific antivenom for treatment of viperid envenomation in Southeast Asian region requires further assessment from future clinical trials. SN - 1873-6254 UR - https://www.unboundmedicine.com/medline/citation/24384454/Cross_neutralization_of_common_Southeast_Asian_viperid_venoms_by_a_Thai_polyvalent_snake_antivenom__Hemato_Polyvalent_Snake_Antivenom__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0001-706X(13)00367-7 DB - PRIME DP - Unbound Medicine ER -