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Temporal changes in immune cell composition and cytokines in response to chemoradiation in rectal cancer.

 Yong Joon Lee  ;  Sat Byol Lee  ;  Suk Kyung Beak  ;  Yoon Dae Han  ;  Min Soo Cho  ;  Hyuk Hur  ;  Kang Young Lee  ;  Nam Kyu Kim  ;  Byung Soh Min 
 SCIENTIFIC REPORTS, Vol.8 : 7565, 2018 
Journal Title
Issue Date
We measured systemic changes in the immune response in 92 patients receiving preoperative chemoradiation therapy (CRT) and subsequent surgery for rectal cancer. The peripheral blood was sampled five times from the onset of CRT until surgery. Lymphocytes decreased continuously during CRT but increased after CRT. The increased lymphocyte population was predominantly CD8+ T lymphocytes, which accounted for a significantly larger proportion in patients without residual lymph node metastasis than in those with residual lymph node metastasis. Neutrophils and monocytes decreased during the initial two weeks of CRT but were maintained or increased afterwards. Neutrophil and monocyte counts were significantly lower in patients with a pCR (pathologic complete response) than in those without a pCR two weeks after CRT began but not at the initiation of CRT. All cytokines showed dramatic changes one month after the termination of CRT. Cytokines related to the antitumour immune response increased, and those related to tumour progression decreased. The predictive value of cytokines was not clear. In short, we observed that immune components in peripheral blood are affected by CRT and show dynamic changes over time. We identified biomarker candidates to predict the pathologic response in the future.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Nam Kyu(김남규) ORCID logo https://orcid.org/0000-0003-0639-5632
Min, Byung Soh(민병소) ORCID logo https://orcid.org/0000-0003-0180-8565
Lee, Kang Young(이강영)
Cho, Min Soo(조민수)
Han, Yoon Dae(한윤대) ORCID logo https://orcid.org/0000-0002-2136-3578
Hur, Hyuk(허혁) ORCID logo https://orcid.org/0000-0002-9864-7229
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