American Journal of Pharmacology and Pharmacotherapeutics

An ex vivo abomasal ovine model to study the immediate immune response in the context of Haemonchus contortus larval-stage

European Congress on Pharma
August 13-14, 2018 Paris,France

Saeed El-Ashram

Foshan University, Guangdong province, China

Posters & Accepted Abstracts: J Pharmacol Pharmacother

DOI: 10.21767/2393-8862-C1-003

Abstract

We have set up an ex vivo ovine abomasal model, which can mimic the multicellular process to explore the early steps in haemonchine nematode infection using RNA-seq technology. Ovine abomasal explants were collected for histological and transcriptional analysis, supernatants collected to quantitate lactate dehydrogenase (LDH) enzymes. A total of 233 were substantially induced genes between L4-inoculated and uninoculated-control tissues, respectively. However, a total of 14 were considerably down-regulated genes between the 51 aforementioned tissues. Fifteen pathways were annotated by Kyoto Encyclopedia of Genes, and Genomes pathway analysis accounted for the significant percentage in immediate response to larval-stage of H. contortus. Key genes up-regulated in response to the addition of L4-inoculum of H. contortus were IL-6, IL-8, C1q, atypical chemokine receptor-3, chemokine ligand-2, manganese superoxide dismutase, integrin alpha-7, -8, -9 , integrin subunit beta-1, integrin subunit beta 6, intercellular adhesion molecule-1 and actin alpha-1. This study shows for the first time that galectin-1 is up-regulated in an ex-vivo abomasal segment model exposed to L4-inoculum of H. contortus following 6 h of incubation. The abomasal segment model has been shown to be a suitable tool to study the haemonchine larval-stage effects on the ovine abomasal tissues prior to in vivo assessment.