In addition, any data in other disease states have similarly implicated IL-15 in effector tissue pathology, including in psoriatic and inflammatory bowel disease models.
Neuron stimulation of the brain leads to stimulation of the pituitary through gonadotropin releasing hormone (GnRH) which releases relevant hormones, such as follicle stimulating hormone (FSH) and luteinising hormone (LH) into the blood plasma for transport to the effector tissue.
While ongoing investigations will have to delineate changes in other components of the intestinal motor system, e.g. submucosal neurons, glial cells, interstitial cells of Cajal and the effector tissue smooth muscle, our findings emphasize the altered neurochemical profile as part of the disease spectrum underlying disturbed gut motility in chagasic megacolon.
Whenever a stimulus is perceived as harmful, this pre-programmed alarm system is turned on, and the actions of the gastrointestinal effector tissues (glands, vasculature and musculature) are coordinated in a stereotypical defensive response.
They are the primary effector of tissue fibrosis as they synthesize large quantities of collagen [ 1], have a contractile phenotype [ 7- 9] and are resistant to apoptosis [ 10].
It will therefore be of interest to investigate the role of Hh-signalling in peripheral lymphocyte homeostasis, effector differentiation, tissue inflammation and tumour surveillance in addition to further dissecting its role during thymocyte development.
Thus, rather than the primary effector of tissue destruction, macrophages may act as an amplifier of the pathogenetic cascade, especially via activation of fibroblasts by molecules such as IL-1 and tumor necrosis factor (TNF -alpha.
TGFβ1 increases ECM accumulation through the induction of its downstream effector, connective tissue growth factor (CTGF) [ 15, 16], and by decreasing matrix degradation through the inhibition of proteases or the activation of protease inhibitors such as plasminogen activator inhibitor-1 (PAI-1) in glomerular mesangial cells [ 17].
With regard to their functional annotation, genes of cluster 1 were correlated with immune effector process, tissue remodeling and cell signaling, while genes of cluster 3 showed evident connection to histone and chromatin modifications as well as metabolic processes (data not shown).
OVA-specific CTL response was also enhanced in the spleen and CLN, and the number of CD11b+CD11c+ DCs expressing high levels of costimulatory molecules was preferentially increased in NALT, which migrated to mucosal effector lymphoid tissues.
Another key point might be to identify effectors of tissue necrosis and tissue protection produced by Ly-6C hi) Ly-6C hiC(lo) mandophages, respectiveLy-6C lo
