Interferon-gamma regulates oxidative stress during experimental autoimmune encephalomyelitis
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Interferon-gamma regulates oxidative stress during experimental autoimmune encephalomyelitis. / Espejo, Carmen; Penkowa, Milena; Sáez-Torres, Irene; Hidalgo, Juan; García, Agustina; Montalban, Xavier; Martínez-Cáceres, Eva M.
In: Experimental Neurology, Vol. 177, No. 1, 2002, p. 21-31.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Interferon-gamma regulates oxidative stress during experimental autoimmune encephalomyelitis
AU - Espejo, Carmen
AU - Penkowa, Milena
AU - Sáez-Torres, Irene
AU - Hidalgo, Juan
AU - García, Agustina
AU - Montalban, Xavier
AU - Martínez-Cáceres, Eva M
N1 - Keywords: Animals; Antioxidants; Apoptosis; Brain Stem; Encephalomyelitis, Autoimmune, Experimental; Female; Interferon-gamma; Male; Mice; Mice, Knockout; Nitric Oxide Synthase; Nitric Oxide Synthase Type II; Oxidative Stress; Rats
PY - 2002
Y1 - 2002
N2 - Experimental autoimmune encephalomyelitis (EAE) is an induced inflammatory and demyelinating disease of the central nervous system which shares many clinical and pathological features with and is considered the animal model of multiple sclerosis. There is extensive evidence that EAE is a Th1 disease eliciting secretion of proinflammatory cytokines like IFN-gamma or TNF-alpha, and it has been suggested that cytokine-induced oxidative stress could have a role in EAE neuropathology. However, the individual roles of these and other cytokines in the pathogenesis of the disease are still uncertain. Here we analyze the role of IFN-gamma during EAE by using both IFN-gamma receptor-knockout (IFN-gamma R(-/-)) and wild-type mice, both strains immunized with peptide 40-55 from rat myelin oligodendrocyte glycoprotein. The levels of oxidative stress were determined through the analysis of immunoreactivity for inducible NO synthase, nitrotyrosine, and malondialdehyde, as well as through the expression of the tissue-protective antioxidant factors metallothionein I+II (MT-I+II). We also examined the number of cells undergoing apoptosis as judged by using the TUNEL technique. The levels of oxidative stress, MT-I+II, and apoptotic cell death by EAE were significantly increased in all mice, though more so in IFN-gamma R(-/-) mice compared with wild-type mice. These data support the notion that IFN-gamma has a protective role against EAE.
AB - Experimental autoimmune encephalomyelitis (EAE) is an induced inflammatory and demyelinating disease of the central nervous system which shares many clinical and pathological features with and is considered the animal model of multiple sclerosis. There is extensive evidence that EAE is a Th1 disease eliciting secretion of proinflammatory cytokines like IFN-gamma or TNF-alpha, and it has been suggested that cytokine-induced oxidative stress could have a role in EAE neuropathology. However, the individual roles of these and other cytokines in the pathogenesis of the disease are still uncertain. Here we analyze the role of IFN-gamma during EAE by using both IFN-gamma receptor-knockout (IFN-gamma R(-/-)) and wild-type mice, both strains immunized with peptide 40-55 from rat myelin oligodendrocyte glycoprotein. The levels of oxidative stress were determined through the analysis of immunoreactivity for inducible NO synthase, nitrotyrosine, and malondialdehyde, as well as through the expression of the tissue-protective antioxidant factors metallothionein I+II (MT-I+II). We also examined the number of cells undergoing apoptosis as judged by using the TUNEL technique. The levels of oxidative stress, MT-I+II, and apoptotic cell death by EAE were significantly increased in all mice, though more so in IFN-gamma R(-/-) mice compared with wild-type mice. These data support the notion that IFN-gamma has a protective role against EAE.
M3 - Journal article
C2 - 12429207
VL - 177
SP - 21
EP - 31
JO - Experimental Neurology
JF - Experimental Neurology
SN - 0014-4886
IS - 1
ER -
ID: 13620689