Abstract
Objective To investigate the role and expression of serum substance P (SP) in the patients with breast cancer.Methods The quantity of serum SP by using ELISA in 21 patients with breast cancer (breast cancer group) and 10 healthy women (control group) were detected,the data were analyzed according to AJCC guide line.Results The positive rate of serum SP in breast cancer group was significantly higher than that in control group [57.1% (12/21) vs.0] (P < 0.01).The level of serum SP in breast cancer group was significantly higher than that in control group [(240.14 ± 435.04) ng/L vs.(16.80 ± 11.74) ng/L](t =2.9852,P < 0.01).There was no relationship between serum SP and estrogen receptor in the patients with breast cancer (t =0.1856,P > 0.05).The level of serum SP showed significantly difference according to AJCC stages respectively (F =3.24,P < 0.05).Conclusion The level of serum SP in the patients with breast cancer increase and may play a role in the progress of breast cancer. Key words: Substance P; Breast neoplasms; Neoplasm staging
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