Abstract:
:We undertook one of the most detailed studies on the distribution of alpha2,3 sialic acid (SA)-galactose (gal) (avian type) and alpha2,6SA-gal (human type) receptors on different tissues of chickens, ducks and turkeys of varying age groups. On the tracheal epithelium, all 3 bird species expressed strong positive staining (80-90%) for alpha2,3SA-gal receptors in the 3 different age groups. In addition, a lesser amount of alpha2,6SA-gal receptors (30-90%) were observed with slight differences in distribution with age and species. The epithelium of the small and large intestine of turkeys and ducks showed negligible staining for alpha2,6SA-gal receptors whereas the large intestine consistently showed 40-70% positive staining for alpha2,3SA-gal receptors. In contrast, a greater amount of staining for alpha2,3SA-gal (50-80%) and alpha2,6SA-gal (20-50%) receptors were observed along the epithelium of small and large intestine of chickens. Kidney and esophagus sections from the 3 bird species also expressed both avian and human type receptors. In other tissues examined, brain, breast muscles, bursa, spleen, cecal tonsils and oviduct, human type receptors were absent. Though different viral and receptor components may play roles in successful viral replication and transmission, understanding the receptor types and distribution in different tissues of domestic birds might be good initial tool to understand host factors that promote successful influenza viral infection.
journal_name
Virol Jjournal_title
Virology journalauthors
Pillai SP,Lee CWdoi
10.1186/1743-422X-7-5subject
Has Abstractpub_date
2010-01-12 00:00:00pages
5issn
1743-422Xpii
1743-422X-7-5journal_volume
7pub_type
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