Aminoguanidine reduces apoptosis of circulating V Beta 8.2 T lymphocytes in Lewis rats with actively induced experimental autoimmune encephalomyelitis. Association with persistent inflammation of the central nervous system and lack of recovery

• Published in: Journal of neuroimmunology 2000-10, Vol.110 (1), p.140-150
• Main Authors: Puerta, C., Martı́nez, I., Baranda, P., Blasco, M.R., Castejón, R., Vargas, J.A., Garcı́a-Merino, A.
• Format: Article
• Language: English
• Subjects: Aminoguanidine; Animals; Apoptosis; Apoptosis - drug effects; Apoptosis - immunology; Cell Division - immunology; EAE; Encephalomyelitis, Autoimmune, Experimental - immunology; Encephalomyelitis, Autoimmune, Experimental - pathology; Enzyme Inhibitors - pharmacology; Gene Expression - immunology; Guanidines - pharmacology; Guinea Pigs; Intercellular Adhesion Molecule-1 - genetics; Intercellular Adhesion Molecule-1 - immunology; Interferon-gamma - genetics; Interferon-gamma - immunology; Interleukin-10 - genetics; Interleukin-10 - immunology; Myelin basic protein; Myelin Basic Protein - immunology; Nitrates - blood; Nitric oxide; Nitric Oxide Synthase - genetics; Nitric Oxide Synthase - immunology; Nitric Oxide Synthase Type II; Nitrites - blood; Rats; Rats, Inbred Lew; Receptors, Antigen, T-Cell, alpha-beta - analysis; Recovery of Function - immunology; Spinal Cord - chemistry; Spinal Cord - immunology; Spinal Cord - pathology; T-Lymphocytes - chemistry; T-Lymphocytes - cytology; T-Lymphocytes - immunology; Transforming Growth Factor beta - genetics; Transforming Growth Factor beta - immunology; Tumor Necrosis Factor-alpha - genetics; Tumor Necrosis Factor-alpha - immunology; Vascular Cell Adhesion Molecule-1 - genetics; Vascular Cell Adhesion Molecule-1 - immunology
• ISSN: 0165-5728; 1872-8421
• DOI: 10.1016/S0165-5728(00)00347-7

Aminoguanidine therapy delayed the onset of actively induced EAE in Lewis rats, but recovery was impaired in most animals. In the central nervous system this was correlated with persistent inflammation and production of proinflammatory cytokines. In the periphery of aminoguanidine-treated animals, T lymphocytes showed increased proliferation against myelin basic protein, and the percentage of Vβ 8.2 + T lymphocytes undergoing early apoptosis was markedly decreased, although it was unchanged in Vβ 8.2 + T cells isolated from the spinal cord. These results suggest that the prolonged survival of circulating encephalitogenic cells achieved by aminoguanidine would favor a longer lasting entry of these cells into the nervous system resulting in persistent inflammation and lack of recovery.