Effects of Sertraline on the 1% Sucrose Consumption and the Body Weight Following Chronic Unpredictable Mild Stress in Rats.
- Author:
Gi Chul LEE
1
;
Sunyoung CHO
;
Jung Ho LEE
;
Hyun Taek KIM
Author Information
1. Department of Neuropsychiatry, Sanggye Paik Hospital, Inje University Medical College, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Sertraline;
l% Sucrose intake;
Body weight;
Chronic unpredictable mild stress;
Rat
- MeSH:
Animals;
Body Weight*;
Injections, Intraperitoneal;
Rats*;
Sertraline*;
Sucrose*
- From:Journal of Korean Neuropsychiatric Association
1998;37(1):159-167
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The study was designed to evaluate the effects of sertraline on l% sucrose intake and weight change in rats with chronic unpredictable mild stress and normal controls. We applied 11 types of stress regimens and identified depressive behaviours in 18 Spraque-Dawley rats for 8 weeks. After 4 weeks of chronic unpredictable mild stress procedure, those 18 rats were stratified into a sertraline-treated subgroup and a saline subgroup. Also nonstressed 18 rats were stratified into the sertraline-treated subgroup and the saline subgroup and were started intraperitoneal injections of sertraline(4.29mg/Kg) or saline for rest of 4 weeks. The 1% sucrose intake and the body weight were checked on the 4th day of every week, over the 8 weeks of experiment. The results were as follows: 1) The sertraline-treated subgroup of chronic unpredictable mild stressed rats showed significant increase of 1% sucrose intake between the 1st week and the 2nd, the 3rd and 4th week, while the sertraline-treated subgroup of non-stressed rats showed decreasing trend for 1% sucrose intake. 2) The sertraline-treated subgroup of chronic unpredictable mild-stressed rats showed a sustained decrease of body weight, while the sertraline-treated subgroup of non-stressed rats showed a non-significant increase of body weight. 3) In the group subjected to chronic unpredictable mild stress, there were no significant correlations between 1% sucrose intake and body weight and also no correlations in the nonstressed group. In summary, sertraline had an effect on restoring the decreased 1% sucrose intake to normal condition but no effect on regaining the body weight in the chronic unpredictable mild stresstreated rats. Sertraline resulted in a decrease of l% sucrose intake and no effect on body weight in the non-stressed rats.
