Hemes are most commonly recognized as components of hemoglobin, the red pigment in blood, but are also found in a number of other biologically important hemoproteins such as myoglobin, cytochromes, catalases, heme peroxidase, and endothelial nitric oxide synthase.

Heme (from the Greek for blood) is the basic chemical structure (Fig. 1) responsible for the red color of two important animal pigments: hemoglobin, the red pigment of blood, and myoglobin, the red pigment of muscles.

These “cellular pigments,” or cytochromes, give rise to spectral absorption bands from heme b of complex II (succinate dehydrogenase), hemes b of complex III (bc 1 complex), hemes a of complex IV (cytochrome c oxidase) and hemes c of complex III and the soluble electron mediator, cytochrome c. Complex I (NADH Dehydrogenase) contains flavin ...

Dec 4, 2023 · The clinical features and diagnosis of heme pigment-induced AKI due to nontraumatic rhabdomyolysis and to hemolysis will be reviewed here. Prevention and treatment of heme pigment-induced AKI, AKI due to crush injury, and overviews of rhabdomyolysis and hemolysis are discussed separately:

Heme is an iron-protoporphyrin complex with an essential physiologic function for all cells, especially for those in which heme is a key prosthetic group of proteins such as hemoglobin, myoglobin, and cytochromes of the mitochondria.

We present a case of heme pigment–induced AKI following an AngioJet procedure that required initiation of dialysis. Although this rare complication has been reported in the literature, it typically occurs when the procedure is used for larger clot burden (ie, venous thromboembolism).

May 1, 2023 · Heme is a component of different biological structures mainly, hemoglobin, others include myoglobin, cytochromes, catalases, heme peroxidase, and endothelial nitric oxide synthase. There are different forms of biological heme.

Oct 4, 2021 · Chlorophyll and heme are among the "pigments of life", tetrapyrrolic structures, without which life on Earth would not be possible. Their catabolites, the phyllobilins and the bilins, respectively, share not only structural features, but also a similar story: Long considered waste products of detoxi …

Among the respiratory pigments, heme pigments are by far the most widely distributed in nature, being present in plants (see Chap. 2, this Vol.) and some 33% of the presently known animal classes.

Jan 1, 2001 · Among those ligands studied, pyridine and nicotinamide formed heme-complexes most effectively with all three pigments. Albumin, bovine serum albumin (BSA), and gammaglobulin were also quite effective in complex formation with myoglobin and hemoglobin at high concentrations, but were not as effective as pyridine and nicotinamide.