Effects of Exercise Therapy on Natural Killer Cell Cytotoxic Activity in Breast Cancer Patients after Curative Surgery
Journal of the Korean Academy of Rehabilitation Medicine
;
: 250-254, 2003.
Article
in Korean
| WPRIM
| ID: wpr-722791
ABSTRACT
OBJECTIVE:
Exercise may contribute to alteration in cancer in many ways. The major cell in cellular immunity to defense against cancer cell is natural killer [NK] cell. So this study is aimed to investigate the effects of exercise on NK cell cytotoxic activity (NKCA) in breast cancer patients who underwent mastectomy.METHOD:
Thirty-one breast cancer patients who had undergone curative surgery were randomly assigned to an exercise group (n=16) and a non-exercise group (n=15). Exercise therapy was consisted of aerobic activity such as bicycle ergometer for 30 minutes, twice a day, five times each week for 2 weeks. The venous blood samplings were obtained on postoperative days 1, 7 and 14. NKCA was assayed by cytotoxic response against K562 cells. The venous blood samplings were obtained on postoperative days 1, 7 and 14. NKCA was assayed by cytotoxic response against K562 cells.RESULT:
The baseline study did not show any statistical difference between exercise group and non-exercise group. Mean NKCA of day 7 decreased in both groups compared with that at postoperative day 1 (p<0.05). At day 14, the difference of the mean NKCA between two groups was not significant, but the mean NKCA of the exercise group without metastasis demonstrated a significant increase compared with that of the non-exercise group without metastasis (p<0.05).CONCLUSION:
This study suggested that early moderate exercise had a beneficial effect on the function of NK cells in early stage of breast cancer patients after curative surgery. A further study will be needed to evaluate long-term effect of exercise on NK cell.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Breast
/
Breast Neoplasms
/
Killer Cells, Natural
/
K562 Cells
/
Exercise Therapy
/
Immunity, Cellular
/
Mastectomy
/
Neoplasm Metastasis
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Academy of Rehabilitation Medicine
Year:
2003
Type:
Article
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