High blood pressure is one of the symptoms of paraquat-induced toxicity in rats.

Abstract:

:This study investigated whether paraquat (Pq)-induced lipidic peroxidation (LP) is accompanied by changes in blood pressure and heart rate (HR) in rats. Groups of adult male Wistar rats were studied 2 and 12 h after Pq (35 mg/kg, i.p.) administration. The LP was evaluated by monitoring thiobarbituric acid reactive substances (TBARS) in the kidneys, liver and lungs, and validated by including a group treated with an antioxidant, superoxide dismutase (CuZnSOD 50,000 IU/kg), in the study. The TBARS levels were significantly higher (p<0.05) in the kidneys of the rats studied 2 h after Pq than in their respective controls. Similarly, systolic and diastolic blood pressure (DBP) were higher (p<0.05), while HR was lower (p<0.05) than basal levels 2 and 12 h after Pq administration. In contrast, the group treated simultaneously with Pq and CuZnSOD exhibited lower levels of TBARS (p<0.05) in all studied organs compared to the control group, while the mean arterial pressure and HR did not differ from those seen in the control group. These findings indicate that acute Pq poisoning symptoms include high blood pressure.

journal_name

Arch Toxicol

journal_title

Archives of toxicology

authors

Oliveira MV,Albuquerque JA,Paixão AD,Guedes LS,Cabral AM

doi

10.1007/s00204-005-0660-x

keywords:

subject

Has Abstract

pub_date

2005-09-01 00:00:00

pages

515-8

issue

9

eissn

0340-5761

issn

1432-0738

journal_volume

79

pub_type

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