Efficacy and safety of nitazoxanide and escitalopram as adjuvant therapies in patients with rheumatoid arthritis: a randomized controlled study

Abstract

OBJECTIVE: This research aimed at evaluating the effectiveness and safety of nitazoxanide and escitalopram as adjuvant therapies in patients with rheumatoid arthritis (RA). METHODS: In this randomized controlled parallel study, 90 patients with active RA were randomized into three groups; group 1 (control group; n = 30) which received traditional therapy, group 2 (Nitazoxanide group; n = 30) which received traditional therapy plus 1 gm/day oral nitazoxanide, and group 3 (Escitalopram group; n = 30) which received traditional therapy plus 10 mg/day oral escitalopram for three months. At baseline and 3 months after treatment, clinical and functional assessments were done through the 28-joint count disease activity score using C-reactive protein (DAS28-CRP), the health assessment questionnaire-disability index (HAQ-DI), and the patient's global assessment (PGA). Also, serum levels of high-sensitivity C-reactive protein (hs-CRP), signal transducer and activator of transcription-3 (STAT-3), Janus kinase-2 (JAK-2), toll-like receptors 4 (TLR-4), interleukin-1 beta (IL-1β), and malondialdehyde (MDA) were assessed. Data were analyzed using paired t-test and one-way analysis of variance, followed by Tukey's HDS test. RESULTS: Three months after treatment and as compared to the control group, the nitazoxanide group showed a significant decline in PGA (P = 0.042), and serum levels of STAT-3 (P < 0.001), JAK-2 (P < 0.001), TLR-4 (P < 0.001), and IL-1β (P < 0.001). On the other hand, the escitalopram group produced a significant decrease in DAS28-CRP score (P = 0.029), HAQ-DI score (P = 0.001), and serum levels of JAK-2 (P = 0.001), TLR-4 (P < 0.001), IL-1β (P < 0.001), and MDA (P < 0.001). As compared to nitazoxanide group, the escitalopram group produced a significant decline in fatigue score (P < 0.001) and serum levels of both IL-1β (P = 0.023) and MDA (P < 0.001). Both medications were safe; however, chromaturia was the only significant nitazoxanide-related adverse effect. CONCLUSION: Nitazoxanide and escitalopram could serve as potential adjuvant therapies for patients with RA based on their effectiveness and safety data.