Mineralocorticoid and glycyrrhizic acid block stress induced hypotension in rats

Ruszymah Idrus, Nabishah Mohamad, S. Aminuddin, B. A K Khalid

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

1. The aim of this study was to investigate the effect of repeated exposure to stress on tail blood pressure (TBP) of normal as well as GCA (glycyrrhizic acid) and steroid treated rats. Male Sprague-Dawley rats (250 g) were exposed to ether vapour to achieve light anaesthesia prior to TBP recording. Rats were injected with either normal saline or naloxone prior to exposure to stress. Tail blood pressure was recorded daily for 2 weeks. 2. We found that ether stress caused a transient drop in TBP in control as well as in dexamethasone (DEX) treated rats. The stress-induced fall in blood pressure was reduced by naloxone in control rats but not in DEX treated rats. However the transient drop in TBP following stress was not seen in either GCA or deoxycorticosterone (DOC) treated rats. 3. We conclude that first, the reduction in TBP was due to the release of endogenous opioids caused by stress. Second, DOC may block the release of such endogenous opioids, preventing the drop in TBP in response to stress, while DEX did not. Third, GCA caused a similar mineralocorticoid effect on reversing stress induced hypotension.

Original languageEnglish
Pages (from-to)35-39
Number of pages5
JournalClinical and Experimental Pharmacology and Physiology
Volume22
Issue number1
Publication statusPublished - 1995

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Controlled Hypotension
Glycyrrhizic Acid
Mineralocorticoids
Tail
Blood Pressure
Dexamethasone
Desoxycorticosterone
Naloxone
Ether
Opioid Analgesics
Sprague Dawley Rats
Anesthesia
Steroids

Keywords

  • Blood pressure
  • Deoxycorticosterone
  • Dexamethasone
  • Endorphin
  • Glycyrrhizic acid
  • Naloxone
  • Stress

ASJC Scopus subject areas

  • Physiology
  • Pharmacology (medical)
  • Pharmacology, Toxicology and Pharmaceutics(all)

Cite this

Mineralocorticoid and glycyrrhizic acid block stress induced hypotension in rats. / Idrus, Ruszymah; Mohamad, Nabishah; Aminuddin, S.; Khalid, B. A K.

In: Clinical and Experimental Pharmacology and Physiology, Vol. 22, No. 1, 1995, p. 35-39.

Research output: Contribution to journalArticle

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