Enhanced NFκB1 mRNA in Bone Marrow Cells of Rheumatoid Arthritis Patients
Author Information
Author(s): Hirohata Shunsei, Miura Yasushi, Tomita Tetsuya, Yoshikawa Hideki, Ochi Takahiro, Chiorazzi Nicholas
Primary Institution: Teikyo University School of Medicine
Hypothesis
The abnormal responses of RA bone marrow CD34+ cells to TNF-α might result from abnormal expression of NFκB genes.
Conclusion
The study found that enhanced expression of NFκB1 mRNA in bone marrow CD34+ cells plays a crucial role in their abnormal responses to TNF-α in rheumatoid arthritis.
Supporting Evidence
- RA bone marrow CD34+ cells have abnormal capacities to respond to TNF-α.
- NFκB1 mRNA expression was significantly higher in RA than in OA.
- Silencing NFκB1 reduced the differentiation of RA bone marrow CD34+ cells into fibroblast-like cells.
Takeaway
In rheumatoid arthritis, certain cells in the bone marrow behave differently because they have too much of a specific messenger, which makes them react poorly to signals that should help them.
Methodology
Bone marrow CD34+ cells were purified from samples of RA and OA patients, and mRNA levels for NFκB1, NFκB2, and RelA were measured using quantitative RT-PCR.
Potential Biases
Potential bias due to the selection of patients and the treatments they were receiving.
Limitations
The study did not account for all potential confounding factors that could influence NFκB1 expression.
Participant Demographics
49 RA patients (8 males, 41 females; mean age 58.6 years) and 31 OA patients (3 males, 28 females; mean age 71.2 years).
Statistical Information
P-Value
0.005351
Statistical Significance
p = 0.005351
Digital Object Identifier (DOI)
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