Metalloporphyrins 22 article 20 metalloporphyrin 12 nitric oxide 12 Nitric Oxide 10 controlled study 10 Nitrogen Oxides 8 chemistry 8 porphyrin derivative 8 priority journal 8 Animals 6 Electrochemistry 6 Enzyme Inhibitors 6 Heme 6 Heme Oxygenase-1 6 Oxidation-Reduction 6 Protoporphyrins 6 RNA, Messenger 6 Reverse Transcriptase Polymerase Chain Reaction 6 cobalt 6 electrochemistry 6 nitroxyl 6 nonhuman 6 oxidation reduction reaction 6 protein expression 6 protoporphyrin 6 unclassified drug 6 Annexin A5 4 Apoptosis 4 Biomedical engineering 4