期刊
WORK-A JOURNAL OF PREVENTION ASSESSMENT & REHABILITATION
卷 66, 期 2, 页码 327-337出版社
IOS PRESS
DOI: 10.3233/WOR-203177
关键词
Myalgic Encephalomyelitis; Chronic Fatigue Syndrome; ADCC; antibody-dependent cell-mediated cytotoxicity; non-classical monocytes; biomarker
资金
- NIH [R21 AI117491, P30 GM110767]
- Nevada INBRE program [NIH GM103440]
BACKGROUND: The search for a biomarker specific for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) has been long, arduous and, to date, unsuccessful. Researchers need to consider their expenditures on each new candidate biomarker. In a previous study of antibody-dependent cell-mediated cytotoxicity (ADCC) by natural killer lymphocytes, we found lower ADCC for ME/CFS patients vs. unrelated donors but ruled against low ADCC as a biomarker because of similar ADCC for patients vs. their family members without ME/CFS. OBJECTIVE: We applied inclusion of family members without ME/CFS, from families with multiple CFS patients, as a second non-ME/CFS control group in order to re-examine inflammation in ME/CFS. METHOD: Total and CD16A-positive 'non-classical' anti-inflammatory monocytes were monitored. RESULTS: Non-classical monocytes were elevated for patients vs. unrelated healthy donors but these differences were insignificant between patients vs. unaffected family members. CONCLUSIONS: Inclusion of family members ruled against biomarker considerations for the monocytes characterized. These pilot findings for the non-classical monocytes are novel in the field of ME/CFS. We recommend that occupational therapists advocate and explain to family members without ME/CFS the need for the family members' participation as a second set of controls in pilot studies to rapidly eliminate false biomarkers, optimize patient participation, and save researchers' labor.
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