Tulsa World: Animal Doctor: Fur staining in dogs is caused by porphyrin or infection Animal Doctor: Fur staining in dogs is caused by porphyrin or infection Q: My dog seems to have a runny eye. It is making tear stains in his fur. What should I do?

Understanding the Context

A: Any problem with the eyes should be evaluated by a veterinarian. Excessive tearing can be caused by many ... In plants, an essential porphyrin derivative is chlorophyll, which is involved in light harvesting and electron transfer in photosynthesis. The parent of porphyrins is porphine, a rare chemical compound of exclusively theoretical interest.

Key Insights

Learn about the vital porphyrin ring structure, the universal foundation for capturing light, transporting oxygen, and generating biological energy. Overview Porphyria (por-FEAR-e-uh) refers to a group of rare disorders that result from a buildup of natural chemicals called porphyrins in the body. Porphyrins are needed to make heme, a part of hemoglobin. Hemoglobin is a protein in red blood cells. It carries oxygen to the body's organs and tissues.

Final Thoughts

Porphyrin, any of a class of water-soluble, nitrogenous biological pigments (biochromes), derivatives of which include the hemoproteins (porphyrins combined with metals and protein). Porphyrin chemical information summary. An official website of the United States government Here is how you know