Abstract
Objective
To investigate the effect of Jinmaitong (筋脉通, JMT) serum on the proliferation of rat Schwann cells (SCs) primarily cultured in high glucose medium.
Method
SCs were primarily cultured in Dulbecco’s minmum essential medium (DMEM control), 50 mmol/L glucose medium (50 mmol/L Glu), 75 mmol/L glucose medium (75 mmol/L Glu), as well as 50 mmol/L glucose medium, with different concentrations of JMT serum (undiluted, 1:2 diluted and 1:8 diluted) and Neurotropin (Ntp), respectively. The proliferation of SCs under different conditions was detected by MTT.
Result
SCs grew exuberantly in DMEM within 24–72 h, but slowed down at 96 h. The proliferation of SCs was inhibited in 50 mmol/L Glu and 75 mmol/L Glu after cultures of 48, 72 and 96 h, which showed that both were significantly different compared to the control group (P<0.01). The inhibition was more significant in 75 mmol/L Glu than in 50 mmol/L Glu (P<0.05). Spearman’s rho analysis revealed that the proliferation of SCs had a negative correlation with the concentration of glucose (r=−0.471, P<0.01). Excluding the time factor, partial correlation showed similar results (r=−0.679, P<0.01). After 48 h, the proliferation of SCs increased significantly in JMT1:2 and Ntp compared with 50 mmol/L Glu (control 0.437±0.019, 50 mmol/L Glu 0.367±0.035, JMT1:2 0.426±0.024, Ntp 0.422±0.013; P<0.01), and there were no statistically significant differences among the JMT groups, the Ntp group and the control group (P>0.05).
Conclusions
The proliferation of SCs was inhibited in high glucose medium, and the inhibition was reduced by different concentrations of JMT serum, especially at JMT1:2.
Similar content being viewed by others
References
Kalichman MW, Powell HC, Mizisin AP. Reactive degenerative proliferative Schwann cell responses in experimental galactose and human diabetic neuropathy. Acta Neuropathol 1998;95:47–56.
Kuruvilla R, Eichberg J. Depletion of phospholipids arachidonoyl-containing molecular species in a human Schwann cell line grown in elevated glucose and their restoration by an aldose reductase inhibitor. J Neurochem 1998;71:775–783.
Kamiya H, Nakamura J, Hamada Y, et al. Polyol pathway and protein kinase C activity of rat Schwannoma cells. Diabetes Metab Res Rev 2003;19:131–139.
Mizisin AP, Li L, Perello M, et al. Polyol pathway and osmoregulation in JS1 Schwann cells grown in hyperglycemic and hyperosmotic conditions. Am J Physiol 1996;270(1 Part 2):F90–F97.
Almhanna K, Wilkins PL, Bavis JR, et al. Hyperglycemia triggers abnormal signaling and proliferative responses in Schwann Cells. Neurochem Res 2002;27:1341–1347.
Delaney CL, Russell JW, Cheng HL, et al. Insulin-like growth factor-I and over-expression of Bcl-xL prevent glucose-mediated apoptosis in Schwann cells. J Neuropathol Exp Neurol 2001;60:147–160.
Eckersley L. Role of the Schwann cell in diabetic neuropathy. Int Rev Neurobiol 2002;50:293–321.
Zhang YY, Wang Y, Ding ZT, et al. High glucose down-regulates calpain II expression in rat schwann cells. Chin J Pathophysiol (Chin) 2006;22(2):398–399,407.
Cheng B, Chen ZR, Wang Y, et al. Promotion of proliferation of Schwann cells in vitro by neurotropin: an experimental study. Chin J Hand Surg (Chin) 2002;18(1):49–51.
Liang XC, Cui LY, Guo SS, et al. Clinical study on Jinmaitong composita on diabetic peripheral neuropathy. Chin J Integr Tradit West Med (Chin) 1999;19(9):517–519.
Zhang KJ, Liang XC, Cui LY, et al. Clinical study on Jinmaitong composita on Na+-K+-ATPase activity of diabetic peripheral neuropathy. J Tradit Chin Med (Chin) 2001;42(3):159–161.
Liang XC, Zhang H, Guo SS, et al. Effects of Jin Mai Tong on sciatic nerve conduction velocity, aldose reductase activity and sorbitol in diabetic rats. Chin J Diabetes (Chin) 2000;8(1):37–39.
Hao WX, Jia L, Xu HY, et al. Effect of Jinmaitong mixture on conduction velocity of sciatic nerve and antioxidant level of erythrocyte in diabetic rats. Chin J New Drugs (Chin) 2003;12(5):343–345.
Author information
Authors and Affiliations
Corresponding author
Additional information
Supported by the Natural Science Foundation of China (No. 30572438)
Rights and permissions
About this article
Cite this article
Qu, L., Liang, Xc., Zhang, H. et al. Effect of Jinmaitong (筋脉通) serum on the proliferation of rat Schwann cells cultured in high glucose medium. Chin. J. Integr. Med. 14, 293–297 (2008). https://doi.org/10.1007/s11655-008-0293-z
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11655-008-0293-z