Inflammation is the main cause of several autoimmune diseases, including type I diabetes, rheumatoid arthritis, bullous pemphigoid, paraneoplastic pemphigoid, and multiple sclerosis. Currently, there is an urgent demand for the discovery of novel anti-inflammatory drugs with potent activity but also safe for long-term application. Toward this aim, the present study reported the design, synthesis, and characterization of a set of novel 1,3-disubstituted-2-thiohydantoins derivatives. The anti-inflammatory activity of synthesized compounds was assessed against murine leukemia cell line (RAW264.7) by evaluating the cytotoxicity activity and their potency to prevent nitric oxide (NO) production. The results revealed that the synthesized compounds possess a considerable cytotoxic activity together with the ability to reduce the NO production in murine leukemia cell line (RAW264.7). Among synthesized compounds, compound 7 exhibited the most potent cytotoxic activity with IC₅₀ of 197.68 μg/mL, compared to celecoxib drug (IC₅₀ value 251.2 μg/mL), and demonstrated a significant ability to diminish the NO production (six-fold reduction). Exploring the mode of action responsible for the anti-inflammatory activity revealed that compound 7 displays a significant and dose-dependent inhibitory effect on the expression of pro-inflammatory cytokines IL-1β. Furthermore, compound 7 demonstrated the ability to significantly reduce the expression of the inflammatory cytokines IL-6 and TNF-α at 50 μg/mL, as compared to Celecoxib. Finally, detailed molecular modelling studies indicated that compound 7 exhibits a substantial binding affinity toward the binding pocket of the cyclooxygenase 2 enzyme. Taken together, our study reveals that 1,3-disubstituted-2-thiohydantoin could be considered as a promising scaffold for the development of potent anti-inflammatory agents.

Background: Warts are non-malignant growth of the skin and mucous membranes resulting from infection with human papillomavirus (HPV). It can significantly impact the quality of life for patients and elicit feeling of embarrassment. Aim and objectives: A comparative analysis of the efficacy of intralesional 5-FU and intralesional interferon alpha among distinct groups of patients diagnosed with warts. Patients and methods: This is a cohort of sixty individuals diagnosed with warts were selected from the period of early April 2022 to the end of April 2023. Results: There was a statistically significant difference (P-value=0.005) seen between the two groups, namely group A and group B, in relation to the final response. In group A (5-Fluorouracil)), complete clearance was achieved by 23 patients (76.7%), with 7 patients (23.3%) showing partial response. No instances of resistance were observed in this group. Conversely, in group B (Interferon alpha), only 11 patients (36.7%) attained complete clearance, while 16 patients (53.3%) exhibited partial response, and resistance was evident in 3 cases (10%). Conclusion: Intralesional 5-Fluorouracil (5-FU) is highly effective, cheaper, and easily available in treating warts. The combination of the both treatments may deliver a greater benefit to patients with resistant warts.