Neuropeptide y inhibits in vivo specific antibody production in rats

Elliot M. Friedman, Michael R. Irwin, Katsonori Nonogaki

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


The sympathetic neurotransmitter neuropeptide-Y (NPY) is hypothesized to play a role in the in vivo modulation of immune responses. This study examined the effects of intraperitoneal administration of NPY on specific antibody responses to keyhole limper hemocyanin (KLH) in rats. Antibody levels were repeatedly measured by enzyme-linked immunosorbent assay before and after intraperitoneal immunization with KLH. NPY induced a dose-dependent inhibition of ISM and IgG antibody responses following immunization with either physiologic or supraphysiologic doses of antigen. These in vivo results suggests that NPY may be involved in endogenous modulation of immune responses.

Original languageEnglish
Pages (from-to)182-189
Number of pages8
JournalBrain Behavior and Immunity
Issue number3
Publication statusPublished - 1995 Sept
Externally publishedYes

ASJC Scopus subject areas

  • Immunology
  • Endocrine and Autonomic Systems
  • Behavioral Neuroscience


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