Comprehensive Biological, Photodegradation, Density Functional Theory, and Docking Exploration of Zn(II) and Mn(II) complexes of Piroxicam

Abstract The biological evaluation of coordination complexes is an active research area ascribed to structural modification and synergistic action due to metal ions. The mononuclear complexes of Zn(II) and Mn(II) piroxicam were evaluated for their encyclopedic biological activities, DFT, and docking exploration. Different antioxidant methods were used to assess their antioxidant potential. DNA cleavage and protein binding properties of the complexes were monitored through gel electrophoresis and UV‐visible spectrophotometry. The low IC50 value of both complexes implies more potency than the piroxicam. The percent cleavage and binding constant values indicated that the complexes bind with DNA and BSA more efficiently than the piroxicam. In SD rats, complexes were screened for analgesic, anti‐anxiety, anti‐inflammatory, and anti‐hyperglycemic effects. The complexes demonstrated statistically significant results for in‐vivo analysis. Photodegradation results of the metal complexes under UV lamp exhibited abrupt degradation than the piroxicam. Docking results also validate a better propensity of both complexes to bind with DNA and BSA. Hydrogen bonding and Van der Waals forces play a key role in stabilizing complexes in DNA and BSA binding pockets. These metal complexes have evident therapeutic potential more than piroxicam and could be promising drugs for relieving pain, anxiety, inflammation, and associated comorbidities with good pharmacodynamic properties.