PMID- 20564564 OWN - NLM STAT- MEDLINE DCOM- 20101021 LR - 20161125 IS - 1612-1880 (Electronic) IS - 1612-1872 (Linking) VI - 7 IP - 6 DP - 2010 Jun TI - Effects of D-aspartate treatment on D-aspartate oxidase, superoxide dismutase, and caspase 3 activities in frog (Rana esculenta) tissues. PG - 1459-66 LID - 10.1002/cbdv.200900331 [doi] AB - Although D-aspartate (D-Asp) has been recognized to have a physiological role within different organs, high concentrations could elicit detrimental effects on those same organs. In this study, we examined the D-aspartate oxidase (D-AspO) activity and the expression of superoxide dismutase 1 (SOD1) and caspase 3 in different tissues of the frog Rana esculenta after chronic D-Asp treatment. Our in vivo experiments, consisting of intraperitoneal (ip) injections of D-Asp (2.0 micromol/g b.w.) in frogs for ten consecutive days, revealed that all examined tissues can take up and accumulate D-Asp. Further, in D-Asp treated frogs, i) the D-AspO activity significantly increased in all tissues (kidney, heart, testis, liver, and brain), ii) the SOD1 expression (antioxidant enzyme) significantly increased in the kidney, and iii) the caspase 3 level (indicative of apoptosis) increased in both brain and heart. Particularly, after the D-Asp treatment we found in both brain and heart (which showed the lowest SOD1 levels) a significant increase of the caspase 3 expression and, vice versa, in the kidney (which showed the highest SOD1 expression) a significant decrease of the caspase 3 expression. Therefore, we speculate that, in frog tissue, D-AspO plays an essential role in modulating the D-Asp concentration. In addition, exaggerated D-Asp concentrations activated SOD1 as cytoprotective mechanism in the kidney, whereas, in the brain and in the heart, where the antioxidant action of SOD1 is limited, caspase 3 was activated. FAU - Burrone, Lavinia AU - Burrone L AD - Dipartimento di Scienze della Vita, Seconda Universita degli Studi di Napoli, via Vivaldi 43, I-81100 Caserta, Italy. FAU - Di Giovanni, Marcello AU - Di Giovanni M FAU - Di Fiore, M Maddalena AU - Di Fiore MM FAU - Baccari, Gabriella Chieffi AU - Baccari GC FAU - Santillo, Alessandra AU - Santillo A LA - eng PT - Journal Article PL - Switzerland TA - Chem Biodivers JT - Chemistry & biodiversity JID - 101197449 RN - 4SR0Q8YD1X (D-Aspartic Acid) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 1.15.1.1 (Superoxide Dismutase-1) RN - EC 1.4.3.1 (D-Aspartate Oxidase) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Animals MH - Brain/enzymology/metabolism MH - Caspase 3/*metabolism MH - D-Aspartate Oxidase/*metabolism MH - D-Aspartic Acid/*administration & dosage MH - Injections, Intraperitoneal MH - Kidney/enzymology/metabolism MH - Myocardium/enzymology/metabolism MH - Rana esculenta MH - Superoxide Dismutase/*metabolism MH - Superoxide Dismutase-1 EDAT- 2010/06/22 06:00 MHDA- 2010/10/22 06:00 CRDT- 2010/06/22 06:00 PHST- 2010/06/22 06:00 [entrez] PHST- 2010/06/22 06:00 [pubmed] PHST- 2010/10/22 06:00 [medline] AID - 10.1002/cbdv.200900331 [doi] PST - ppublish SO - Chem Biodivers. 2010 Jun;7(6):1459-66. doi: 10.1002/cbdv.200900331.