Effect of Cholera Toxin Administered Supraspinally or Spinally on the Blood Glucose Level in Pain and D-Glucose Fed Animal Models.
10.4196/kjpp.2013.17.2.163
- Author:
Yun Beom SIM
1
;
Soo Hyun PARK
;
Yu Jung KANG
;
Sung Su KIM
;
Chea Ha KIM
;
Su Jin KIM
;
Jun Sub JUNG
;
Ohk Hyun RYU
;
Moon Gi CHOI
;
Seong Soo CHOI
;
Hong Won SUH
Author Information
1. Department of Pharmacology, Institute of Natural Medicine, College of Medicine, Hallym University, Chuncheon 200-702, Korea. hwsuh@hallym.ac.kr
- Publication Type:Original Article
- Keywords:
Blood glucose;
Brain;
Cholera toxin;
Pain;
Spinal cord
- MeSH:
Animals;
Blood Glucose;
Brain;
Cholera;
Cholera Toxin;
Glucose;
Hand;
Mice;
Mice, Inbred ICR;
Models, Animal;
Spinal Cord
- From:The Korean Journal of Physiology and Pharmacology
2013;17(2):163-167
- CountryRepublic of Korea
- Language:English
-
Abstract:
In the present study, the effect of intrathecal (i.t.) or intracerebroventricular (i.c.v.) administration with cholera toxin (CTX) on the blood glucose level was examined in ICR mice. The i.t. treatment with CTX alone for 24 h dose-dependently increased the blood glucose level. However, i.c.v. treatment with CTX for 24 h did not affect the blood glucose level. When mice were orally fed with D-glucose (2 g/kg), the blood glucose level reached to a maximum level at 30 min and almost returned to the control level at 120 min after D-glucose feeding. I.c.v. pretreatment with CTX increased the blood glucose level in a potentiative manner, whereas i.t. pretreatment with CTX increased the blood glucose level in an additive manner in a D-glucose fed group. In addition, the blood glucose level was increased in formalin-induced pain animal model. I.c.v. pretreatment with CTX enhanced the blood glucose level in a potentiative manner in formalin-induced pain animal model. On the other hand, i.t. pretreatment with CTX increased the blood glucose level in an additive manner in formalin-induced pain animal model. Our results suggest that CTX administered supraspinally or spinally differentially modulates the regulation of the blood glucose level in D-glucose fed model as well as in formalin-induced pain model.
