The current study included the collection of 175 samples of blood (Urea-blood) of patients with rheumatoid arthritis from Al–Al-Kindy Teaching Hospital, Baghdad Teaching Hospital and Al-Imamian Al-Kadhimyain Medical City in Baghdad from both sexes with different ages at the period between 1/10/2016-1/2/2017. Bacterial growth results showed that 80% of urea for bacterial transplantation were positive results, while the number of samples showing no bacterial growth was 20%. The bacterial isolation evaluate for morphological testes and biochemical microscopy, as well as identification by Api system. The highest frequency of inflectional bacteria was E. coli (41.97%), followed by E. cloacae (21.25%), P. aeruginosa (12.5%), Salmonella (10%), K. pneumoniae (7.5%) and S. marcescens (6.25%). The concentration of some cytokines IL-6, TNF was measuredby using ELISA technical. The results showed significant decrease at P≤ 0.05 in level of IL-6for patient serum (23.76±14.01 pg/ml) compared with healthyserum (209.11±76.99) pg/ml. The result of TNF showedan increase significantly at P≤ 0.05 in level of serum for rheumatoid arthritis patient (437.68±16.80 pg/ml) compared with healthy serum (370.31±26.87 pg/ml). The study found that reverse relation between IL-6 and TNF
University of Baghdad
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