ArticlePLoS neglected tropical diseases2021
Prevalence and relevant factors of positive RF in brucellosis patients with arthralgia.
Article in PLoS neglected tropical diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 5 citations in OpenAlex.
- Deep Vein Thrombosis Secondary to Brucellosis: An Uncommon Infectious Cause of Venous Thrombosis.Case reports in infectious diseases · 2026Article
- Extracellular vesicle microRNA signature as a highly accurate diagnostic biomarker for human brucellosis.Frontiers in cellular and infection microbiology · 2026Article
- Unraveling brucellosis: advances in pathogenesis, diagnostic strategies, therapeutic innovations, and public health perspectives.Frontiers in medicine · 2025Review
- What Could Lead to the Production of Anti-Rheumatoid Antibodies in Patients with Brucellosis Spondylodiscitis: Possible Causes.Medical journal of the Islamic Republic of Iran · 2024Article
- Evaluation of the Cardiac Conduction System in Fibromyalgia Patients With Complaints of Palpitations.Cureus · 2022Article
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Authors and funding
13 authors at 2 institutions in 1 country.
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Abstract
backgroundBrucellosis is a critical zoonotic disease in the world, it is the non-specific arthralgia that make brucellosis patients easily misdiagnosed as rheumatoid arthritis (RA) in endemic regions. Elevated rheumatoid factor (RF) is an essential indicator of RA, and the RF in brucellosis patients is significantly higher than healthy people. Therefore, this study further explored the distribution of RF and the relevant factors of the RF positivity in brucellosis patients with arthralgia, in order to strengthen the recognition of physicians for brucellosis patients with RF positivity, especially in brucellosis-endemic areas, so as to avoid misdiagnosis and untimely treatment that may lead to malignant outcomes. METHODOLOGY AND PRINCIPAL
findingsThe medical records of all 572 brucellosis inpatients were collected in the Sixth People's Hospital of Shenyang, China from 2015 to 2016. After excluding 106 patients without arthralgia, 5 patients who unwilling to perform RF testing and 16 patients with diseases that may affect RF, 445 brucellosis inpatients with arthralgia were involved in this retrospective cross-sectional study. 143 (32.1%) patients with RF >10 IU/ml were classified into the RF positive group, with an average level of 16.5[12.2, 34.7] IU/ml, of which 45 (10.1%) patients were high-positive with RF >30 IU/ml. Multivariate logistic regression model was used to further analyze the relevant factors of the RF positivity and found that age, wrist joint pain and elevated C-reactive protein (CRP) were positively associated with RF positivity, with OR of 1.02 (P = 0.024), 8.94 (P = 0.008) and 1.79 (P = 0.019), respectively.
conclusionThe prevalence of positive RF in brucellosis patients with arthralgia was critical, nearly one-third of patients had RF positive. Elderly men brucellosis patients with arthralgia, wrist joint pain and elevated CRP were at high risk of positive RF. It is reminded that physicians should focus on differential diagnosis during clinical diagnosis and treatment, especially in brucellosis-endemic regions.
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