Journal List > J Korean Acad Nurs > v.44(4) > 1002999

Kim and Choe: Effects of Antioxidant on Reduction of Hindlimb Muscle Atrophy Induced by Cisplatin in Rats

Abstract

Purpose

The purpose of this study was to examine the effects of Cu/Zn SOD on reduction of hindlimb muscular atrophy induced by cisplatin in rats.

Methods

Forty-two rats were assigned to three groups; control group, Cisplatin (CDDP) group and cisplatin with Cu/Zn SOD (CDDP-SOD) group. At day 35 hindlimb muscles were dissected. Food intake, activity, withdrawal threshold, muscle weight, and Type I, II fiber cross-sectional area (CSA) of dissected muscles were measured. Relative SOD activity and expression of MHC and phosphorylated Akt, ERK were measured after dissection.

Results

Muscle weight and Type I, II fiber CSA of hindlimb muscles in the CDDP group were significantly less than the control group. Muscle weight and Type I, II fiber CSA of hindlimb muscles, food intake, activity, and withdrawal thresholds of the CDDP-SOD group were significantly greater than the CDDP group. There were no significant differences in relative SOD activities of hindlimb muscles between the CDDP-SOD and CDDP groups. MHC expression and phosphorylated Akt, ERK of hindlimb muscles in the CDDP-SOD group were significantly greater than the CDDP group.

Conclusion

Cu/Zn SOD attenuates hindlimb muscular atrophy induced by cisplatin through increased food intake and activity. Increment of phosphorylated Akt, ERK may relate to attenuation of hindlimb muscular atrophy.

Figures and Tables

Figure 1
Relative SOD activity of three groups.
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Figure 2
A. Expression of phosphorylated Akt, phosphorylated ERK and expression of MHC of soleus in C, CDDP and CDDP-SOD rats. B. Expression of phosphorylated Akt, phosphorylated ERK and expression of MHC of plantaris in C, CDDP and CDDP-SOD rats.
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Table 1
Body Weight and Mean Daily Diet Intake per Body Weight of C, CDDP and CDDP-SOD Rats
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*Kruskal-wallis test analysis; Significant difference among three groups (p<.05); C=Control (n=14); CDDP=Cisplatin (n=14); CDDP-SOD=Cisplatin with superoxide dismutase (n=14).

Table 2
Mean Activity Score and Withdrawal Thresholds of C, CDDP and CDDP-SOD Rats
jkan-44-371-i002

*Kruskal-wallis test analysis; Significant difference among three groups (p<.05); C=Control (n=14); CDDP=Cisplatin (n=14); CDDP-SOD=Cisplatin with superoxide dismutase (n=14).

Table 3
Weight of Hindlimb Muscles and Cross-Sectional Area of Hindlimb Muscles in C, CDDP and CDDP-SOD Rats
jkan-44-371-i003

*Significant difference between CDDP & C (p<.05); C=control (n=14); CDDP=cisplatin (n=14); CDDP-SOD=cisplatin with superoxide dismutase (n=14); CSA=cross-sectional area.

Notes

This article is a revision of the first author's doctoral thesis from Seoul National University.

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