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Pentoxifylline and N-acetylcysteine in hepatic ischemia/reperfusion injury.
Clin Chim Acta. 1998 Jul 28; 275(2):127-35.CC

Abstract

This study was designed to clarify the effects of pentoxifylline (PTX) and N-acetylcysteine (NAC) on hepatic reperfusion injury in rats. Rats were pretreated with NAC, or PTX, or combination of the drugs. In each rat, liver was isolated after twenty minutes reperfusion following thirty minutes ischemia. Plasma alanine amino transferase (ALT) activity, liver tissue glutathione (GSH) and malondialdehyde (MDA) levels, glutathione peroxidase (GPx), glutathione reductase (GSSGR), superoxide dismutase (SOD) and catalase (CAT) activities were determined. Plasma ALT activity was higher in ischemia/reperfusion groups than in control. It was decreased in the groups given NAC. Administration of NAC maintained tissue GSH levels, whereas the levels were decreased in both the ischemia/reperfusion groups treated (P < 0.05) and untreated with PTX (P < 0.01). Increases in liver MDA concentration in ischemia/reperfusion (P < 0.01) and PTX-treated groups (P < 0.05) were mitigated by administration of NAC. GPx and CAT activities were increased in the ischemia/reperfusion (P < 0.01, P < 0.05) and PTX-treated groups (P < 0.05, P < 0.001). GSSGR activities were increased in the NAC (P < 0.001) and NAC-PTX-treated groups (P < 0.01). SOD activities were higher in the ischemia/reperfusion (P < 0.01) and the PTX-treated (P < 0.01) and the NAC-PTX-treated groups (P < 0.01). In conclusion, short-term liver ischemia/reperfusion diminished GSH, increased MDA and induced some antioxidant enzymes. While we could not find any useful effects with PTX as we expected, our findings indicate that NAC might be useful to prevent tissue damage in hepatic ischemia/reperfusion injury.

Authors+Show Affiliations

Department of Biochemistry, Pamukkale University, The School of Medicine, Denizli, Turkey. sdemir@prizmanet.com.trNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9721071

Citation

Demir, S, and M Inal-Erden. "Pentoxifylline and N-acetylcysteine in Hepatic Ischemia/reperfusion Injury." Clinica Chimica Acta; International Journal of Clinical Chemistry, vol. 275, no. 2, 1998, pp. 127-35.
Demir S, Inal-Erden M. Pentoxifylline and N-acetylcysteine in hepatic ischemia/reperfusion injury. Clin Chim Acta. 1998;275(2):127-35.
Demir, S., & Inal-Erden, M. (1998). Pentoxifylline and N-acetylcysteine in hepatic ischemia/reperfusion injury. Clinica Chimica Acta; International Journal of Clinical Chemistry, 275(2), 127-35.
Demir S, Inal-Erden M. Pentoxifylline and N-acetylcysteine in Hepatic Ischemia/reperfusion Injury. Clin Chim Acta. 1998 Jul 28;275(2):127-35. PubMed PMID: 9721071.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pentoxifylline and N-acetylcysteine in hepatic ischemia/reperfusion injury. AU - Demir,S, AU - Inal-Erden,M, PY - 1998/8/28/pubmed PY - 1998/8/28/medline PY - 1998/8/28/entrez SP - 127 EP - 35 JF - Clinica chimica acta; international journal of clinical chemistry JO - Clin. Chim. Acta VL - 275 IS - 2 N2 - This study was designed to clarify the effects of pentoxifylline (PTX) and N-acetylcysteine (NAC) on hepatic reperfusion injury in rats. Rats were pretreated with NAC, or PTX, or combination of the drugs. In each rat, liver was isolated after twenty minutes reperfusion following thirty minutes ischemia. Plasma alanine amino transferase (ALT) activity, liver tissue glutathione (GSH) and malondialdehyde (MDA) levels, glutathione peroxidase (GPx), glutathione reductase (GSSGR), superoxide dismutase (SOD) and catalase (CAT) activities were determined. Plasma ALT activity was higher in ischemia/reperfusion groups than in control. It was decreased in the groups given NAC. Administration of NAC maintained tissue GSH levels, whereas the levels were decreased in both the ischemia/reperfusion groups treated (P < 0.05) and untreated with PTX (P < 0.01). Increases in liver MDA concentration in ischemia/reperfusion (P < 0.01) and PTX-treated groups (P < 0.05) were mitigated by administration of NAC. GPx and CAT activities were increased in the ischemia/reperfusion (P < 0.01, P < 0.05) and PTX-treated groups (P < 0.05, P < 0.001). GSSGR activities were increased in the NAC (P < 0.001) and NAC-PTX-treated groups (P < 0.01). SOD activities were higher in the ischemia/reperfusion (P < 0.01) and the PTX-treated (P < 0.01) and the NAC-PTX-treated groups (P < 0.01). In conclusion, short-term liver ischemia/reperfusion diminished GSH, increased MDA and induced some antioxidant enzymes. While we could not find any useful effects with PTX as we expected, our findings indicate that NAC might be useful to prevent tissue damage in hepatic ischemia/reperfusion injury. SN - 0009-8981 UR - https://www.unboundmedicine.com/medline/citation/9721071/Pentoxifylline_and_N_acetylcysteine_in_hepatic_ischemia/reperfusion_injury_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0009-8981(98)00078-3 DB - PRIME DP - Unbound Medicine ER -