Abstract
Purpose of Review
Opioids are administered to cancer patients although concerns have been raised that they may promote tumour growth or metastasis owing to their ability to suppress anti-cancer immunity. Tramadol has been reported to preserve or promote the immune response and may therefore be preferred to other opioids in cancer patients. We reviewed the literature documenting the immunomodulatory effects of tramadol.
Recent Findings
Recent clinical evidence appears to confirm that tramadol possesses anti-inflammatory properties, and preserves some signalling cascades of the immune system relevant to anti-cancer defence.
Summary
Tramadol is reported to promote or preserve immunity including natural killer cell activity which is important in anti-cancer defences.
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Abbreviations
- Arg1:
-
Arginase 1
- Con-A:
-
Concanavalin A
- CRP:
-
C-reactive protein
- Fizz1:
-
Resistin-like molecule alpha1
- IFN-γ:
-
Interferon gamma
- IL-2:
-
Interleukin 2
- LPS:
-
Lipopolysaccharide
- MOR:
-
μ-Opioid receptor
- Mrc1:
-
Mannose receptor C-type 1
- M1:
-
O-desmethyltramadol
- NA:
-
Noradrenaline
- NK:
-
Natural killer
- OR:
-
Opioid receptor
- PBMCs:
-
Peripheral blood mononuclear cell
- PCA:
-
Patient-controlled analgesia
- PHA:
-
Phytohemagglutinin
- PMN:
-
Polymorphonuclear
- TH1:
-
T helper cell type 1
- TNF:
-
Tumour necrosis factor
- TNF-α:
-
Tumour necrosis factor alpha
- Ym1:
-
Chitinase 3-like 3
- 5-HT:
-
Serotonin
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Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance
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Iqira Saeed declares that she has no conflict of interest. Adam La Caze declares that he has no conflict of interest. Markus W. Hollmann has received research funding from CSL Behring, ZonMw, the Society of Cardiovasular Anesthesiologists (SCA) and the European Association of Cardiothoracic Anaesthesiology (EACTA); and has received compensation from Eurocept Pharmaceuticals BV and IDD for service as a consultant. Paul N. Shaw declares that he has no conflict of interest. Marie-Odile Parat declares that she has no conflict of interest.
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Saeed, I., La Caze, A., Hollmann, M.W. et al. New Insights on Tramadol and Immunomodulation. Curr Oncol Rep 23, 123 (2021). https://doi.org/10.1007/s11912-021-01121-y
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DOI: https://doi.org/10.1007/s11912-021-01121-y