PA(20:0/22:6(5Z,7Z,10Z,13Z,16Z,19Z)-OH(4))

Found 26 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
757.5154	[M+H-2H2O]+ PPM:1.6	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito03_18 - MTBLS58 Resolution: 17μm, 208x104 Description
793.5243	[M+H]+ PPM:17	Homo sapiens	esophagus	DESI ()	LNTO22_1_3 - MTBLS385 Resolution: 75μm, 121x68 Description
793.5359	[M+H]+ PPM:2.4	Homo sapiens	esophagus	DESI ()	LNTO22_1_4 - MTBLS385 Resolution: 17μm, 82x80 Description
793.5351	[M+H]+ PPM:3.4	Homo sapiens	esophagus	DESI ()	LNTO29_16_2 - MTBLS385 Resolution: 17μm, 95x101 Description
793.5369	[M+H]+ PPM:1.1	Homo sapiens	esophagus	DESI ()	LNTO22_1_9 - MTBLS385 Resolution: 75μm, 89x74 Description
793.5504	[M+H]+ PPM:15.9	Homo sapiens	colorectal adenocarcinoma	DESI ()	80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415 Resolution: 17μm, 137x136 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).
793.5504	[M+H]+ PPM:15.9	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).
793.5348	[M+H]+ PPM:3.7	Homo sapiens	colorectal adenocarcinoma	DESI ()	439TopL, 409TopR, 429BottomL, 419BottomR-profile - MTBLS415 Resolution: 17μm, 157x136 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).
793.5487	[M+H]+ PPM:13.8	Homo sapiens	NA	DESI ()	160TopL,130TopR,150BottomL,140BottomR-profile - MTBLS415 Resolution: 17μm, 142x136 Description
793.5352	[M+H]+ PPM:3.2	Homo sapiens	esophagus	DESI ()	LNTO26_7_1 - MTBLS385 Resolution: 17μm, 75x74 Description
793.5257	[M+H]+ PPM:15.2	Homo sapiens	esophagus	DESI ()	LNTO26_7_2 - MTBLS385 Resolution: 17μm, 135x101 Description
793.536	[M+H]+ PPM:2.2	Homo sapiens	esophagus	DESI ()	LNTO26_7_3 - MTBLS385 Resolution: 75μm, 82x88 Description
793.5356	[M+H]+ PPM:2.7	Homo sapiens	esophagus	DESI ()	TO29T - MTBLS385 Resolution: 75μm, 56x48 Description
793.5349	[M+H]+ PPM:3.6	Homo sapiens	esophagus	DESI ()	TO41T - MTBLS385 Resolution: 75μm, 69x43 Description
793.5353	[M+H]+ PPM:3.1	Homo sapiens	esophagus	DESI ()	LNTO22_1_5 - MTBLS385 Resolution: 75μm, 135x94 Description
793.5358	[M+H]+ PPM:2.5	Homo sapiens	esophagus	DESI ()	LNTO22_1_7 - MTBLS385 Resolution: 75μm, 69x54 Description
793.5356	[M+H]+ PPM:2.7	Homo sapiens	esophagus	DESI ()	LNTO22_1_8 - MTBLS385 Resolution: 75μm, 69x61 Description
793.5251	[M+H]+ PPM:16	Homo sapiens	esophagus	DESI ()	LNTO22_2_1 - MTBLS385 Resolution: 75μm, 89x88 Description
793.5322	[M+H]+ PPM:7	Homo sapiens	esophagus	DESI ()	LNTO22_2_2 - MTBLS385 Resolution: 75μm, 135x94 Description
793.5371	[M+H]+ PPM:0.8	Homo sapiens	esophagus	DESI ()	LNTO26_16_1 - MTBLS385 Resolution: 75μm, 95x88 Description
793.535	[M+H]+ PPM:3.5	Homo sapiens	esophagus	DESI ()	LNTO29_18_2 - MTBLS385 Resolution: 75μm, 62x68 Description
793.535	[M+H]+ PPM:3.5	Homo sapiens	esophagus	DESI ()	LNTO30_7_2 - MTBLS385 Resolution: 75μm, 82x68 Description
793.5345	[M+H]+ PPM:4.1	Homo sapiens	colorectal adenocarcinoma	DESI ()	240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176 Resolution: 50μm, 142x141 Description
793.5352	[M+H]+ PPM:3.2	Homo sapiens	colorectal adenocarcinoma	DESI ()	200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176 Resolution: 50μm, 132x126 Description
793.5343	[M+H]+ PPM:4.4	Homo sapiens	colorectal adenocarcinoma	DESI ()	160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176 Resolution: 50μm, 142x136 Description
793.5348	[M+H]+ PPM:3.7	Homo sapiens	colorectal adenocarcinoma	DESI ()	120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176 Resolution: 50μm, 132x136 Description

PA(20:0/22:6(5Z,7Z,10Z,13Z,16Z,19Z)-OH(4)) is an oxidized phosphatidic acid (PA). Oxidized phosphatidic acids are glycerophospholipids in which a phosphate moiety occupies a glycerol substitution site and at least one of the fatty acyl chains has undergone oxidation. As all oxidized lipids, oxidized phosphatidic acids belong to a group of biomolecules that have a role as signaling molecules. The biosynthesis of oxidized lipids is mediated by several enzymatic families, including cyclooxygenases (COX), lipoxygenases (LOX) and cytochrome P450s (CYP). Non-enzymatically oxidized lipids are produced by uncontrolled oxidation through free radicals and are considered harmful to human health (PMID: 33329396). As is the case with diacylglycerols, phosphatidic acids can have many different combinations of fatty acids of varying lengths, saturation and degrees of oxidation attached at the C-1 and C-2 positions. PA(20:0/22:6(5Z,7Z,10Z,13Z,16Z,19Z)-OH(4)), in particular, consists of one chain of one eicosanoyl at the C-1 position and one chain of 4-hydroxy-docosahexaenoyl at the C-2 position. Phospholipids are ubiquitous in nature and are key components of the lipid bilayer of cells, as well as being involved in metabolism and signaling. Similarly to what occurs with phospholipids, the fatty acid distribution at the C-1 and C-2 positions of glycerol within oxidized phospholipids is continually in flux, owing to phospholipid degradation and the continuous phospholipid remodeling that occurs while these molecules are in membranes. Oxidized PAs can be synthesized via three different routes. In one route, the oxidized PA is synthetized de novo following the same mechanisms as for PAs but incorporating oxidized acyl chains (PMID: 33329396). An alternative is the transacylation of one of the non-oxidized acyl chains with an oxidized acylCoA (PMID: 33329396). The third pathway results from the oxidation of the acyl chain while still attached to the PA backbone, mainly through the action of LOX (PMID: 33329396).