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Methionine-enkephalin stimulates hydrogen peroxide and nitric oxide production in rat peritoneal macrophages: Interaction of mu, delta and kappa opioid receptors
(Karger, Basel, 2004)
Objective: Methionine-enkephalin ( MET) modulates various functions of macrophages related to both immune and inflammatory reactions in a naloxone reversible manner, suggesting that opioid receptors are involved in the ...
Age-Associated Remodeling of Thymopoiesis: Role for Gonadal Hormones and Catecholamines
(Karger, Basel, 2008)
The present review summarizes recent data on age-related thymic changes termed thymic involution, and highlights the putative role of perturbances in extrathymical and, possibly, intrathymical production of gonadal steroids ...
Castration of sexually immature rats affects sympathetic innervation of the adult thymus
(Karger, Basel, 2000)
It has been hypothesized that maturational processes within the hypothalamo-pituitary-gonadal (HPG) axis and thymus are reciprocally regulated via neural pathways. To test this hypothesis, in the thymi of adult rats ...
Peripheral effects of methionine-enkephalin on inflammatory reactions and behavior in the rat
(Karger, Basel, 2000)
Methionine-enkephalin (Met-Enk) induces notable alterations in immune and central nervous system functions. The present study was conducted in order to compare peripheral and central effects of Met-Enk on nonspecific ...
Neonatal androgenization affects the intrathymic T-cell maturation in rats
(Karger, Basel, 2005)
The thymus structure, expression of CD4/CD8/TCR alpha beta on thymocytes and thymocyte proliferative and apoptotic indexes were analyzed in sexually immature 30-day-old and in sexually mature 60-day-old female rats neonatally ...
The effects of corticosterone and beta-endorphin on adherence, phagocytosis and hydrogen peroxide production of macrophages isolated from Dark Agouti rats exposed to acute stress
(Karger, Basel, 2008)
Background: Given that stressful experiences can change the reaction to a subsequent exposure to stress, we tested the in vitro effects of the stress mediator corticosterone and the opioid peptide beta-endorphin on the ...