Co(II) and Cu(II) coordination polymers: Crystal structures and treatment effect on acute lung injury treatment by inhibiting inflammatory response

Two coordination polymers named [Co(tib)(H2O)(3)]center dot ipa center dot 2H(2)O (1, H(2)ipa = iso-phthalic acid) and [Cu-3(tib)(2)(BTB)(2)]center dot DMF center dot 2H(2)O (2, H3BTB = 4,4',4 ''-gbenzene-1,3,5-triyl-tribenzoic acid, DMF= N,N-dimethylformamide) were constructed using a solvothermal method by reaction of metal salts with the 1,3,5-tris(1-imidazolyl)benzene (tib) ligands and different carboxylate linkers as the co-ligands. The two complexes have been characterized by X-ray diffraction as well as the elemental analyses. Subsequently, the protective effect of compounds 1 and 2 on the acute lung injury and its related mechanism was explored. Firstly, the enzyme linked immunosorbent assay (ELISA) was performed to detect the release of the inflammatory cytokines. Then, the partial pressure of oxygen (PaO2) and the partial pressure of carbon dioxide (PaCO2) was measured with blood gas analysis.