Impairment of lymphocyte function following yttrium-90 DOTATOC therapy
Cancer Immunology, Immunotherapy, ISSN: 1432-0851, Vol: 64, Issue: 6, Page: 755-764
2015
- 15Citations
- 18Captures
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Metrics Details
- Citations15
- Citation Indexes15
- 15
- CrossRef7
- Captures18
- Readers18
- 18
Article Description
The radiolabeled somatostatin analogue, yttrium-90 DOTA-d-Phe(1)-Tyr(3)-octreotide (DOTATOC), is currently applied to treat advanced somatostatin receptor-positive tumors, e.g., neuroendocrine tumors of the pancreas, lung or gut. However, effects of this treatment on antimicrobial immune responses are not yet defined. In 20 patients treated with DOTATOC, cellular in vitro immune function was determined. Their antimicrobial lymphocyte responses were assessed by lymphocyte transformation test and enzyme-linked immunospot—measuring lymphocyte proliferation and on a single cell level production of pro- and anti-inflammatory cytokines (interferon-γ and interleukin-10)—prior to therapy, at day 1, day 7 and day 90 post-therapy. Proliferative lymphocyte responses and interferon-γ production after in vitro stimulation with microbial antigens were non-significantly suppressed at day 1 and significantly (p < 0.05) at day 7 versus pre-therapy. In vitro immune responses did not fully recover until day 90. In contrast, at day 1 interleukin-10 production was significantly (p < 0.05) increased. Taken together, we observed a decrease in pro-inflammatory immune responses after DOTATOC therapy. Patients with versus without bone metastases displayed significantly (p < 0.05) lower cellular immune responses toward several microbial antigens. Progressive disease and higher tumor burden could also be defined as factors associated with impaired immune function. Spearman correlation analysis indicated that cellular in vitro immunity was positively correlated with kidney function; better kidney function led to stronger immune responses. In conclusion, DOTATOC therapy caused a decrease in in vitro immune responses against microorganisms. The clinical impact needs to be evaluated in further studies.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84930416998&origin=inward; http://dx.doi.org/10.1007/s00262-015-1687-3; http://www.ncbi.nlm.nih.gov/pubmed/25822768; http://link.springer.com/10.1007/s00262-015-1687-3; https://dx.doi.org/10.1007/s00262-015-1687-3; https://link.springer.com/article/10.1007/s00262-015-1687-3
Springer Science and Business Media LLC
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