Coproporphyrinogen III

Found 3 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
678.3451	[M+NH4]+ PPM:6.8	Mus musculus	Lung	MALDI (DHB)	image1 - MTBLS2075 Resolution: 40μm, 187x165 Description Fig. 2 MALDI-MSI data from the same mouse lung tissue analyzed in Fig. 1. A: Optical image of the post-MSI, H&E-stained tissue section. B–D, F–G: Ion images of (B) m/z 796.6855 ([U13C-DPPC+Na]+), (C) m/z 756.5514 ([PC32:0+Na]+), (D) m/z 765.6079 ([D9-PC32:0+Na]+), (F) m/z 754.5359 ([PC32:1+Na]+), and (G) m/z 763.5923 ([D9-PC32:1+Na]+). E, H: Ratio images of (E) [D9-PC32:0+Na]+:[PC32:0+Na]+ and (H) [D9-PC32:1+Na]+:[PC32:1+Na]+. Part-per-million (ppm) mass errors are indicated in parentheses. All images were visualized using total-ion-current normalization and using hotspot removal (high quantile = 99%). DPPC = PC16:0/16:0. U13C-DPPC, universally 13C-labeled dipalmitoyl PC; PC, phosphatidylcholine; MSI, mass spectrometry imaging; H&E, hematoxylin and eosin. Fig 1-3, Fig S1-S3, S5
699.4062	[M+K]+ PPM:10.7	Mus musculus	Lung	MALDI (DHB)	image2 - MTBLS2075 Resolution: 40μm, 550x256 Description Supplementary Figure S6. Ion distribution images for (a) [PC36:4+Na]+ (m/z 804.5514) and (b) [PC38:6+Na]+ (m/z 828.5515) obtained from mouse lung tissue collected 6 h after administration of D9- choline and U13C-DPPC–containing CHF5633. Parts-per-million (ppm) mass errors are indicated in parentheses. (c) Magnification of the boxed region in (a) with selected bronchiolar regions outlined in white boxes. (d) The corresponding H&E-stained tissue section with the same selected bronchiolar regions outlined in black boxes. These data demonstrate the co-localisation of the polyunsaturated lipids PC36:4 and PC38:6 with the bronchiolar regions of the lung. All MSI images were visualised using total ion current normalisation and hotspot removal (high quantile = 99%).
660.343	[M-H2O+NH4]+ PPM:5.8	Homo sapiens	colorectal adenocarcinoma	DESI ()	520TopL, 490TopR, 510BottomL, 500BottomR-profile - MTBLS415 Resolution: 17μm, 147x131 Description The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).

Coproporphyrinogen III is a porphyrin metabolite arising from heme synthesis. Porphyrins are pigments found in both animal and plant life. Coproporphyrinogen III is a tetrapyrrole dead-end product resulting from the spontaneous oxidation of the methylene bridges of coproporphyrinogen arising from heme synthesis. It is secreted in feces and urine. Coproporphyrinogen III is biosynthesized from the tetrapyrrole hydroxymethylbilane, which is converted by the action of uroporphyrinogen III synthase to uroporphyrinogen III. Uroporphyrinogen III is subsequently converted into coproporphyrinogen III through a series of four decarboxylations. Increased levels of coproporphyrinogens can indicate congenital erythropoietic porphyria or sideroblastic anemia, which are inherited disorders. Porphyria is a pathological state characterized by abnormalities of porphyrin metabolism and results in the excretion of large quantities of porphyrins in the urine and in extreme sensitivity to light. A large number of factors are capable of increasing porphyrin excretion, owing to different and multiple causes and etiologies: (1) the main site of the chronic hepatic porphyria disease process concentrates on the liver, (2) a functional and morphologic liver injury is almost regularly associated with this chronic porphyria, and (3) the toxic form due to occupational and environmental exposure takes mainly a subclinical course. Hepatic factors include disturbance in coproporphyrinogen metabolism, which results from inhibition of coproporphyrinogen oxidase as well as from the rapid loss and diminished utilization of coproporphyrinogen in the hepatocytes. This may also explain why coproporphyrin, its autoxidation product, predominates physiologically in the urine. Decreased biliary excretion of coproporphyrin leading to a compensatory urinary excretion. Therefore, the coproporphyrin ring isomer ratio (1:III) becomes a sensitive index for impaired liver function, intrahepatic cholestasis, and disturbed activity of hepatic uroporphyrinogen decarboxylase. In itself, secondary coproporphyrinuria is not associated with porphyria symptoms of a hepatologic-gastroenterologic, neurologic, or dermatologic order, even though coproporphyrinuria can occur with such symptoms (PMID: 3327428). Under certain conditions, coproporphyrinogen III can act as a phototoxin, a neurotoxin, and a metabotoxin. A phototoxin leads to cell damage upon exposure to light. A neurotoxin causes damage to nerve cells and nerve tissues. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of porphyrins are associated with porphyrias such as porphyria variegate, acute intermittent porphyria, hereditary coproporphyria (HCP), congenital erythropoietic porphyria, and sideroblastic anemia. In particular, coproporphyrinogen III is accumulated and excreted excessively in the feces in acute intermittent porphyria, protoporphyria, and variegate porphyria. There are several types of porphyrias (most are inherited). Hepatic porphyrias are characterized by acute neurological attacks (seizures, psychosis, extreme back and abdominal pain, and an acute polyneuropathy), while the erythropoietic forms present with skin problems (usually a light-sensitive blistering rash and increased hair growth). The neurotoxicity of porphyrins may be due to their selective interactions with tubulin, which disrupt microtubule formation and cause neural malformations (PMID: 3441503). Coproporphyrinogen III oxidase is deficient in hereditary coproporphyria. These persons usually have enhanced excretion even in a subclinical state of the disease.(PubMed ID 14605502 ) [HMDB]. Coproporphyrinogen III is found in many foods, some of which are cucumber, climbing bean, horseradish, and pepper (c. frutescens). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS