Age-dependent decrease of retinal kynurenate and kynurenine aminotransferases in DBA/2J mice, a model of ocular hypertension
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Age-dependent decrease of retinal kynurenate and kynurenine aminotransferases in DBA/2J mice, a model of ocular hypertension. / Rejdak, Robert; Kohler, Konrad; Kocki, Tomasz; Shenk, Yana; Turski, Waldemar A; Okuno, Etsuo; Lehaci, Cristiana; Zagorski, Zbigniew; Zrenner, Eberhart; Schuettauf, Frank.
in: VISION RES, Jahrgang 44, Nr. 7, 03.2004, S. 655-60.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Age-dependent decrease of retinal kynurenate and kynurenine aminotransferases in DBA/2J mice, a model of ocular hypertension
AU - Rejdak, Robert
AU - Kohler, Konrad
AU - Kocki, Tomasz
AU - Shenk, Yana
AU - Turski, Waldemar A
AU - Okuno, Etsuo
AU - Lehaci, Cristiana
AU - Zagorski, Zbigniew
AU - Zrenner, Eberhart
AU - Schuettauf, Frank
PY - 2004/3
Y1 - 2004/3
N2 - The study examines age-dependent changes of kynurenic acid (KYNA) content and kynurenine aminotransferases (KAT I and KAT II) celluar expression in the retinas of DBA/2J mice. Retinas were obtained from DBA/2J mice of different ages (3, 6 and 11 months). C57BL6 mice were used as controls. As measured with HPLC, KYNA content decreased (p < 0.01) in the retinas of 6-month-old DBA/2J mice and continued to decrease (p < 0.0074) in the retinas of 11-month-old animals compared to the controls. Immunohistochemistry showed that expression of both KAT I and KAT II decreased markedly in the retinas of 11-month-old DBA/2J mice compared to controls. The impairment in KYNA biosynthesis in the retinas of DBA/2J mice may be one of the mechanisms of retinal neurodegeneration related to ocular hypertension.
AB - The study examines age-dependent changes of kynurenic acid (KYNA) content and kynurenine aminotransferases (KAT I and KAT II) celluar expression in the retinas of DBA/2J mice. Retinas were obtained from DBA/2J mice of different ages (3, 6 and 11 months). C57BL6 mice were used as controls. As measured with HPLC, KYNA content decreased (p < 0.01) in the retinas of 6-month-old DBA/2J mice and continued to decrease (p < 0.0074) in the retinas of 11-month-old animals compared to the controls. Immunohistochemistry showed that expression of both KAT I and KAT II decreased markedly in the retinas of 11-month-old DBA/2J mice compared to controls. The impairment in KYNA biosynthesis in the retinas of DBA/2J mice may be one of the mechanisms of retinal neurodegeneration related to ocular hypertension.
KW - Aging/physiology
KW - Animals
KW - Chromatography, High Pressure Liquid
KW - Female
KW - Immunohistochemistry/methods
KW - Kynurenic Acid/analysis
KW - Mice
KW - Mice, Inbred C57BL
KW - Mice, Inbred DBA
KW - Models, Animal
KW - Ocular Hypertension/metabolism
KW - Retina/metabolism
KW - Transaminases/analysis
U2 - 10.1016/j.visres.2003.11.003
DO - 10.1016/j.visres.2003.11.003
M3 - SCORING: Journal article
C2 - 14751550
VL - 44
SP - 655
EP - 660
JO - VISION RES
JF - VISION RES
SN - 0042-6989
IS - 7
ER -