title: Differential expression of Toll-like receptor mRNA in White Leghorn and indigenous chicken of India.
abstract: In the present experiment, the expression profile of Toll-like receptor mRNA in indigenous and pure line chickens was studied. The expression of TLR3, TLR4, TLR5 and TLR7 were quantified in heterophils of Aseel, Kadaknath, Naked neck, Dwarf and White Leghorn lines by Quantitative Real-time PCR. White Leghorns expressed significantly (P < 0.01) higher levels of TLR3 mRNA compared to other lines. TLR4 and TLR5 mRNA were significantly highly expressed in Kadaknath line. Among the TLRs investigated TLR5 was more expressed in all lines studied. TLR7 was highly expressed in indigenous chicken Aseel and Kadaknath than other lines. Dwarf chicken expressed significantly (P < 0.01) lower levels of all TLRs investigated. On the basis of the present study we conclude that the differential expression of TLR mRNA in the heterophils of indigenous and other chicken breeds might contribute to their variable disease resistance/susceptibility.
authors.affiliation: Project Directorate on Poultry, Hyderabad, 500030,, Andhra Pradesh, India. trkannaki@gmail.com
authors.forename: Kannaki T
authors.initials: KT
authors.lastname: Ramasamy
authors.forename: Maddula R
authors.initials: MR
authors.lastname: Reddy
authors.forename: Dhanutha N
authors.initials: DN
authors.lastname: Raveendranathan
authors.forename: Shanmugam
authors.initials: S
authors.lastname: Murugesan
authors.forename: Rudra N
authors.initials: RN
authors.lastname: Chatterjee
authors.forename: Rajkumar
authors.initials: R
authors.lastname: Ullengala
authors.forename: Santosh
authors.initials: S
authors.lastname: Haunshi
mesh_terms: D000818:Animals; D002645:Chickens / Q000235:genetics*; D005786:Gene Expression Regulation / Q000502:physiology*; D007194:India; D016133:Polymerase Chain Reaction / Q000662:veterinary*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism*; D051193:Toll-Like Receptors / Q000235:genetics* / Q000378:metabolism*
chemical_list: D012333:RNA, Messenger; D051193:Toll-Like Receptors