title: Substance P and adrenocorticotropic hormone do not affect T-lymphocyte adhesion to vascular endothelium or surface expression of adhesion receptors.
abstract: Substance P (SP) and adrenocorticotropic hormone (ACTH) are peptides that have been shown to have both neurological and immunological effects. Because of the demonstrated effects upon immune function, we examined the effects of these peptides on T-lymphocyte adhesion to vascular endothelium and surface adhesion receptor expression. Neither the adhesion assays nor the expression assays showed any statistically significant effect of SP (10 microM) or ACTH (1 microM) for any incubation period used. We conclude that, while SP and ACTH have a variety of immunomodulatory effects, direct modulation of T-lymphocyte adhesion to vascular endothelium is probably not one of them.
authors.affiliation: Geriatric Research, Education, and Clinical Center, Veterans Administration Medical Center, Durham, NC 27705.
authors.forename: B A
authors.initials: BA
authors.lastname: Smart
authors.forename: K M
authors.initials: KM
authors.lastname: Rao
authors.forename: H J
authors.initials: HJ
authors.lastname: Cohen
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000494:pharmacology*; D002448:Cell Adhesion / Q000187:drug effects; D015815:Cell Adhesion Molecules / Q000032:analysis*; D004305:Dose-Response Relationship, Drug; D004730:Endothelium, Vascular / Q000166:cytology* / Q000502:physiology; D006801:Humans; D019041:L-Selectin; D016169:Lymphocyte Function-Associated Antigen-1 / Q000032:analysis*; D016177:Macrophage-1 Antigen / Q000032:analysis; D013373:Substance P / Q000494:pharmacology*; D013601:T-Lymphocytes / Q000187:drug effects* / Q000502:physiology
chemical_list: D015815:Cell Adhesion Molecules; D016169:Lymphocyte Function-Associated Antigen-1; D016177:Macrophage-1 Antigen; D019041:L-Selectin; D013373:Substance P; D000324:Adrenocorticotropic Hormone