Development of a Lipopolysaccharide (LPS)-supplemented Adjuvant and Its Effects on Cell-mediated and Humoral Immune Responses in Male Rats Immunized Against Sperm
Overview
Reproductive Medicine
Affiliations
Supplementation with lipopolysaccharide (LPS) from non-pathogenic Escherichia coli was found to enhance the adjuvant effects of a veterinary vaccine adjuvant (ISA 71VG). Sperm immunization using 71VG as an adjuvant in the immature period induced infertility in 25% of male rats, whereas this increased to 62.5% after immunization with 71VG + LPS or Freund's complete adjuvant (FCA). Mean testicular weight of non-sterile males in the 71VG + LPS group was significantly lower than that in the 71VG or FCA group. Histological examination of testicular tissue from sterile males demonstrated severe impairment of spermatogenesis due to experimental autoimmune orchitis, a cell-mediated autoimmune condition. The serum anti-sperm titer was elevated in the three sperm-immunized groups relative to male rats treated with adjuvant alone, but the titer was higher in the 71VG + LPS and FCA groups than in the 71VG group. We consider that this LPS-supplemented adjuvant stimulates both humoral and cell-mediated immune responses to an extent comparable to FCA.
Chen W, Zou H, Xu H, Cao R, Zhang H, Zhang Y Front Microbiol. 2024; 15:1478082.
PMID: 39439945 PMC: 11493703. DOI: 10.3389/fmicb.2024.1478082.
Tatematsu K, Ikeda M, Wakabayashi Y, Yamamura T, Kikuchi K, Noguchi J J Reprod Dev. 2021; 67(6):402-406.
PMID: 34670878 PMC: 8668373. DOI: 10.1262/jrd.2021-103.
Successful activation of rat T lymphocytes by sperm specific antigens in vitro.
Noguchi J, Ikeda M, Kikuchi K, Dang-Nguyen T, Kasashima M, Tatematsu K J Reprod Dev. 2020; 66(6):599-605.
PMID: 33012735 PMC: 7768165. DOI: 10.1262/jrd.2020-106.
Fishing for vaccines against using pan-proteomic reverse vaccinology approach.
Rashid M, Rehman S, Ali A, Andleeb S PeerJ. 2019; 7:e6223.
PMID: 31249730 PMC: 6589079. DOI: 10.7717/peerj.6223.
Overabundance of sika deer and immunocontraception.
Noguchi J J Reprod Dev. 2016; 63(1):13-16.
PMID: 27890873 PMC: 5320425. DOI: 10.1262/jrd.2016-132.