Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
BJA: British Journal of Anaesthesia
Year: 2010  |  Volume: 104  |  Issue: 5  |  Page No.: 603 - 605

Progesterone decreases sevoflurane requirement in male mice: a dose-response study

T Shimizu, S Inomata and M. Tanaka    

Abstract: Background

Progesterone has long been known to have central effects, by reduced anaesthetic requirements as measured by minimum alveolar concentration (MAC) in various settings. However, other studies have contradicted these findings. Therefore, we compared the effect of progesterone on anaesthetic requirements in a mouse model.

Methods

Male C57BL/6 mice were treated with either progesterone (37.5 or 75 mg kg–1) or the olive oil vehicle, 1 h before each experiment. Animals were placed in a revolving cylinder (4 rev min–1) and supplied with oxygen and stepwise increasing concentrations of sevoflurane. The number of complete rollovers during revolution of the chamber was counted as a measure of anaesthetic requirement.

Results

S.C. administration of progesterone 75 mg kg–1 significantly reduced sevoflurane requirement (P<0.0001). Progesterone 37.5 mg kg–1 did not change sevoflurane requirement.

Conclusions

We conclude that administration of exogenous progesterone injection at higher concentrations decreases anaesthetic requirement as defined by rolling response.

View Fulltext    |   Related Articles   |   Back
   
 
 
 
  Related Articles

No Article Found
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility