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Dose response of alcohol-induced changes in BP, nitric oxide and antioxidants in rat plasma.
Pharmacol Res. 2005 Apr; 51(4):337-43.PR

Abstract

Moderate ethanol consumption is known to reduce the risk of cardiovascular diseases; however, chronic high dose ethanol ingestion causes cardiovascular injuries including hypertension. The dose response of ethanol-induced hypertension and associated oxidative stress response has not been well established. This study investigated the dose response of ethanol on blood pressure (BP), nitric oxide (NO) and antioxidants in the plasma of the rat. Male Fisher rats (200-250 g) were divided into five groups of six animals each and treated as follows: (1) control (5% sucrose, orally) daily for 12 weeks; (2) 20-30% ethanol (1 g kg-1, orally) daily for 12 weeks; (3) 20-30% ethanol (2 g kg-1, orally) daily for 12 weeks; (4) 20-30% ethanol (4 g kg-1, orally) daily for 12 weeks; (5) 20-30% ethanol (6 g kg-1, orally) daily for 12 weeks. The BP (systolic, diastolic and mean) was recorded every week through tail-cuff method. The animals were sacrificed 12 weeks after treatments and blood was collected and analyzed. Systolic and mean BP were slightly decreased with 1 g kg-1 dose but significantly elevated with 2, 4 and 6 g kg-1 doses 7-12 weeks after ethanol ingestion. Whereas diastolic BP was significantly elevated with 4 and 6 g kg-1 doses 8-12 weeks after ethanol ingestion. Blood alcohol levels were significantly elevated with 4 and 6 g kg-1 dose of ethanol for 12 weeks. Ethanol dose-dependency increased plasma malondialdehyde (MDA) and protein carbonyl levels, while nitric oxide (NO), ratio of reduced to oxidized glutathione (GSH/GSSG) and antioxidant enzymes: copper/zinc-superoxide dismutase (CuZn-SOD) and manganese (Mn)-SOD, catalase (CAT) and glutathione peroxidase (GSH-Px) activities were decreased 12 weeks post-treatment. The data suggested that ethanol induces hypertension at higher doses by depleting NO and antioxidants and increasing oxidative tissue injury in rats.

Authors+Show Affiliations

Department of Pharmacology and Toxicology, Ponce School of Medicine, P.O. Box 7004, Ponce, PR 00732, USA. khusain@psm.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

15683747

Citation

Husain, Kazim, et al. "Dose Response of Alcohol-induced Changes in BP, Nitric Oxide and Antioxidants in Rat Plasma." Pharmacological Research, vol. 51, no. 4, 2005, pp. 337-43.
Husain K, Mejia J, Lalla J, et al. Dose response of alcohol-induced changes in BP, nitric oxide and antioxidants in rat plasma. Pharmacol Res. 2005;51(4):337-43.
Husain, K., Mejia, J., Lalla, J., & Kazim, S. (2005). Dose response of alcohol-induced changes in BP, nitric oxide and antioxidants in rat plasma. Pharmacological Research, 51(4), 337-43.
Husain K, et al. Dose Response of Alcohol-induced Changes in BP, Nitric Oxide and Antioxidants in Rat Plasma. Pharmacol Res. 2005;51(4):337-43. PubMed PMID: 15683747.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dose response of alcohol-induced changes in BP, nitric oxide and antioxidants in rat plasma. AU - Husain,Kazim, AU - Mejia,Jose, AU - Lalla,Jainarine, AU - Kazim,Sheeba, PY - 2004/10/01/accepted PY - 2005/2/3/pubmed PY - 2005/7/15/medline PY - 2005/2/3/entrez SP - 337 EP - 43 JF - Pharmacological research JO - Pharmacol Res VL - 51 IS - 4 N2 - Moderate ethanol consumption is known to reduce the risk of cardiovascular diseases; however, chronic high dose ethanol ingestion causes cardiovascular injuries including hypertension. The dose response of ethanol-induced hypertension and associated oxidative stress response has not been well established. This study investigated the dose response of ethanol on blood pressure (BP), nitric oxide (NO) and antioxidants in the plasma of the rat. Male Fisher rats (200-250 g) were divided into five groups of six animals each and treated as follows: (1) control (5% sucrose, orally) daily for 12 weeks; (2) 20-30% ethanol (1 g kg-1, orally) daily for 12 weeks; (3) 20-30% ethanol (2 g kg-1, orally) daily for 12 weeks; (4) 20-30% ethanol (4 g kg-1, orally) daily for 12 weeks; (5) 20-30% ethanol (6 g kg-1, orally) daily for 12 weeks. The BP (systolic, diastolic and mean) was recorded every week through tail-cuff method. The animals were sacrificed 12 weeks after treatments and blood was collected and analyzed. Systolic and mean BP were slightly decreased with 1 g kg-1 dose but significantly elevated with 2, 4 and 6 g kg-1 doses 7-12 weeks after ethanol ingestion. Whereas diastolic BP was significantly elevated with 4 and 6 g kg-1 doses 8-12 weeks after ethanol ingestion. Blood alcohol levels were significantly elevated with 4 and 6 g kg-1 dose of ethanol for 12 weeks. Ethanol dose-dependency increased plasma malondialdehyde (MDA) and protein carbonyl levels, while nitric oxide (NO), ratio of reduced to oxidized glutathione (GSH/GSSG) and antioxidant enzymes: copper/zinc-superoxide dismutase (CuZn-SOD) and manganese (Mn)-SOD, catalase (CAT) and glutathione peroxidase (GSH-Px) activities were decreased 12 weeks post-treatment. The data suggested that ethanol induces hypertension at higher doses by depleting NO and antioxidants and increasing oxidative tissue injury in rats. SN - 1043-6618 UR - https://www.unboundmedicine.com/medline/citation/15683747/Dose_response_of_alcohol_induced_changes_in_BP_nitric_oxide_and_antioxidants_in_rat_plasma_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1043-6618(04)00250-6 DB - PRIME DP - Unbound Medicine ER -