Publication: Comparison of allergenic components and biopotency in whole body extracts of wild and laboratory reared American cockroaches, Periplaneta americana
Issued Date
2012-09-01
Resource Type
ISSN
22288694
0125877X
0125877X
Other identifier(s)
2-s2.0-84866680125
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Asian Pacific Journal of Allergy and Immunology. Vol.30, No.3 (2012), 231-238
Suggested Citation
Anchalee Tungtrongchitr, Nitat Sookrung, Wanpen Chaicumpa, Nitaya Indrawattana, Thitiporn Meechan, Usavadee Thavara, Nualanong Visitsunthorn, Chaweewan Bunnag Comparison of allergenic components and biopotency in whole body extracts of wild and laboratory reared American cockroaches, Periplaneta americana. Asian Pacific Journal of Allergy and Immunology. Vol.30, No.3 (2012), 231-238. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/14274
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Comparison of allergenic components and biopotency in whole body extracts of wild and laboratory reared American cockroaches, Periplaneta americana
Other Contributor(s)
Abstract
Background and objective: Most allergen extracts/vaccines used today in clinical practice are derived from natural allergen sources. Therefore, their allergic components may vary as these are prone to natural variation. This study aims to compare the allergenic components and biological potency of crude extracts from wild and laboratory reared American cockroaches. Methods: Crude extracts of male and female of wild and laboratory reared American CR, were prepared by the same method. Their allergenic components were evaluated by in vitro assays such as protein contents, protein profiles, quantification of major allergens (Per a 1 and Per a 9) and IgE Inhibition ELISA assay. Results and Discussion: There was no statistically significant difference between the protein contents and the concentrations of Per a 1 in thecrude extracts from both groups. However, the Per a 9 levels in extracts of wild CR were significantly higher than those from the extracts of laboratory reared CR. The protein patterns of the extracts of laboratory reared CR exhibited more consistency in the number of bands with higher intensity than those of wild CR. Pooled extracts of laboratory reared CR could inhibit IgE binding to that of wild CR up to 78%. The endotoxin content of extracts of laboratory reared CR were ten times less than those of the the wild CR. We have successfully determined the allergenic potency of the extracts of laboratory reared CR versus those of the wild CRs by in vitro assays. Further studies should be performed to determine the biological potency of CR extracts by in vivo assays for clinical application. Conclusion: Our finding indicates that the laboratory reared CR would be the better source of material in vaccine production than the wild CR.