Immunization against Kisspeptin-54 perturb hypothalamic–pituitary–testicular signaling pathway in ram lambs
2019
Abstract Kisspeptin, a peptide product of KISS1 gene, recently identified as essential upstream gatekeeper in hypothalamic-pituitary-gonadal (HPG) axis. This study was designed to investigate the effect of immunization against kisspeptin-54 on hypothalamic-pituitary-testicular signaling pathway. A total of ten intact 56-days-old ram lambs were used and randomized into the treatment and control groups, which were, respectively immunized by kisspeptin-54 based vaccine and the empty plasmid via intramuscular route. We employed indirect enzyme-linked immunosorbent assay and quantitative real-time PCR to characterize the difference in serum kisspeptin, luteinizing hormone, testosterone hormone concentration and mRNA expression of reproductive-related genes in HPG axis across kisspeptin-54 immunized and control ram lambs. Serum kisspeptin, luteinizing hormone and testosterone concentration in the treatment group was lower ( p p P
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