Biomaterial Database

Urinary excretion of porphyrins in two cases of porphyria cutanea tarda during a period of various treatments. 1978

L Eriksen, and P O Thune

The urinary excretion of porphyrins in two cases of porphyria cutanea tarda (PCT) has been followed during a period in which various treatments have been tried. In one patient pyridoxal-5-phosphate (P-5-P) injections lead to a dramatic increase in porphyrin excretion. In another P-5-P treatment was followed by a significant decrease in porphyrin excretion. p-Aminobenzoic acid (PABA) apparently had no effect on porphyrin excretion, while repeated phlebotomies had the expected effect. In both patients all variations in the total amount of porphyrins excreted were almost exclusively due to the variations in the amounts of heptacarboxylic porphyrin type III and uroporphyrin I. A secondary finding was an increase in hexa- and penta-carboxylic porphyrins type III without a concomitant increase in coproporphyrin III.

UI	MeSH Term	Description	Entries
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D010129	4-Aminobenzoic Acid	An aminobenzoic acid isomer that combines with pteridine and GLUTAMIC ACID to form FOLIC ACID. The fact that 4-aminobenzoic acid absorbs light throughout the UVB range has also resulted in its use as an ingredient in SUNSCREENS.	PABA,p-Aminobenzoic Acid,para-Aminobenzoic Acid,4-Aminobenzoic Acid, Potassium Salt,Aminobenzoic Acid (USP),Epit Vit,Epitelplast,Hachemina,Magnesium para-Aminobenzoate,Pabasan,Paraminan,Paraminol,Potaba,Potassium 4-Aminobenzoate,Potassium Aminobenzoate,4 Aminobenzoic Acid,4 Aminobenzoic Acid, Potassium Salt,4-Aminobenzoate, Potassium,Aminobenzoate, Potassium,Potassium 4 Aminobenzoate,p Aminobenzoic Acid,para Aminobenzoic Acid,para-Aminobenzoate, Magnesium
D011164	Porphyrias	A diverse group of metabolic diseases characterized by errors in the biosynthetic pathway of HEME in the LIVER, the BONE MARROW, or both. They are classified by the deficiency of specific enzymes, the tissue site of enzyme defect, or the clinical features that include neurological (acute) or cutaneous (skin lesions). Porphyrias can be hereditary or acquired as a result of toxicity to the hepatic or erythropoietic marrow tissues.	Porphyria,Porphyrin Disorder,Disorder, Porphyrin,Disorders, Porphyrin,Porphyrin Disorders
D011166	Porphyrins	A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.	Porphyrin
D011732	Pyridoxal Phosphate	This is the active form of VITAMIN B 6 serving as a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. During transamination of amino acids, pyridoxal phosphate is transiently converted into pyridoxamine phosphate (PYRIDOXAMINE).	Pyridoxal 5-Phosphate,Pyridoxal-P,Phosphate, Pyridoxal,Pyridoxal 5 Phosphate,Pyridoxal P
D001815	Bloodletting	Puncture of a vein to draw blood for therapeutic purposes. Bloodletting therapy has been used in Talmudic and Indian medicine since the medieval time, and was still practiced widely in the 18th and 19th centuries. Its modern counterpart is PHLEBOTOMY.
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D062365	Aminobenzoates	Derivatives of BENZOIC ACID that contain one or more amino groups attached to the benzene ring structure. Included under this heading are a broad variety of acid forms, salts, esters, and amides that include the aminobenzoate structure.	Aminobenzoic Acids,Acids, Aminobenzoic