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Hamberg M, Svensson J, Samuelsson B. Thromboxanes: a new group of biologically active compounds derived from prostaglandin endoperoxides. Proc Natl Acad Sci U S A 1975; 72:2994-8. [PMID: 1059088 PMCID: PMC432905 DOI: 10.1073/pnas.72.8.2994] [Citation(s) in RCA: 1951] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
An unstable [t1/2 at 37 degrees = 32 +/- 2 (SD) sec] intermediate, thromboxane A2, was detected in the conversion of prostaglandin G2 into 8-(1-hydroxy-3-oxopropyl)-9,12L-dihydroxy-5,10-heptadecadienoic acid (thromboxane B2) in platelets. The intermediate was trapped by addition of methanol, ethanol, or sodium azide to suspensions of washed human platelets incubated for 30 sec with arachidonic acid or prostaglandin G2. The structures of the resulting derivatives demonstrated that the intermediate possessed an oxane ring as in thromboxane B2 but lacked its hemiacetal hydroxyl group. Additional experiments using 18O2 or [2H8]arachidonic acid in the formation of thromboxane B2 and CH3O2H for the trapping of thromboxane A2, together with information on the t1/2 of the intermediate, indicated the presence of an oxetane structure in thromboxane A2. Incubation of arachidonic acid or prostaglandin G2 with washed platelets led to formation of an unstable factor that induced irreversible platelet aggregation and caused release of [14C]serotonin from platelets that had been incubated with [14C]serotonin. The properties and the mode of formation of this factor indicated that it was identical with thromboxane A2. Furthermore, evidence is presented that the more unstable and major component of rabbit aorta contracting substance (RCS) formed in platelets and guinea pig lung is also thromboxane A2.
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Gorman RR, Hamberg M, Samuelsson B. Inhibition of basal and hormone-stimulated adenylate cyclase in adipocyte ghosts by the prostaglandin endoperoxide prostaglandin H2. J Biol Chem 1975. [DOI: 10.1016/s0021-9258(19)41086-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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253
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Svensson J, Hamberg M, Samuelsson B. Prostaglandin endoperoxides IX. Characterization of rabbit aorta contracting substance (RCS) from guinea pig lung and human platelets. ACTA PHYSIOLOGICA SCANDINAVICA 1975; 94:222-8. [PMID: 1155178 DOI: 10.1111/j.1748-1716.1975.tb05881.x] [Citation(s) in RCA: 152] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Material causing contraction of the isolated rabbit aorta (rabbit aorta contracting substance, RCS) was released from guinea pig lung following perfusion with arachidonic acid and from human blood platelets after addition of thrombin to induce aggregation. Prostaglandin endoperoxides (prostaglandins G2 and/or H2) were found both in the perfusate of guinea pig lung (1-3 ng/ml) and in the medium collected after platelet aggregation (13-37 ng/ml). The contractile response of the isolated rabbit aorta to the pure prostaglandins G2 and H2 was also determined. These data combined with the quantitative analyses of the endoperoxides released from the lungs and platelets showed that only a minor part of the rabbit aorta contracting activity was due to the prostaglandin endoperoxides. The major part of the activity consisted of very unstable material. The half life of this material was about 30 s at 37 degrees whereas at this temperature the prostaglandin endoperoxides had a half life of about 5 min.
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Malmsten C, Hamberg M, Svensson J, Samuelsson B. Physiological role of an endoperoxide in human platelets: hemostatic defect due to platelet cyclo-oxygenase deficiency. Proc Natl Acad Sci U S A 1975; 72:1446-50. [PMID: 1055417 PMCID: PMC432552 DOI: 10.1073/pnas.72.4.1446] [Citation(s) in RCA: 203] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The endoperoxide prostaglandin G2 (PGG2) induced platelet aggregation as well as the platelet release reaction (release of ADP and serotonin) when added to human platelet-rich plasma. Formation of a metabolite of PGG2 [8-(l-hydroxy-3-oxopropyl)-9,12L-dihydroxy-5,10-heptadecadienoic acid] and a lipoxygenase product [12L-hydroxy-5,8,10,14-eicosatetraenoic acid] accompanied the release reaction caused by aggregating agents such as collagen, ADP, epinephrine, and thrombin. Indomethacin inhibited the release reaction and PGG2 formation induced by these agents but had no effect on PGG2-induced release reaction. The aggregating effect of PGG2 was abolished by furosemide, which is a competitive inhibitor of ADP-induced primary aggregation. These data indicate that the aggregating effect of PGG2 is due to release of ADP and that PGG2 synthesis is required for induction of the release reaction by various aggregating agents. A subject with a hemostatic defect due to abnormal release mechanism [decreased aggregation with epinephrine (second wave) and collagen and normal platelet ADP] had a deficiency of the cyclo-oxygenase that catalyzes formation of PGG2. Normal aggregation and release reaction were obtained with added PGG2. Ii is concluded that the endoperoxide (PGG2) is essential in normal hemostasis because of its role in initiating the release reaction required for aggregation by collagen and the second wave of aggregation caused by, e.g., ADP.
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Hamberg M, Hedqvist P, Strandberg K, Svensson J, Samuelsson B. Prostaglandin endoperoxides IV. Effects on smooth muscle. Life Sci 1975; 16:451-62. [PMID: 1128158 DOI: 10.1016/0024-3205(75)90266-0] [Citation(s) in RCA: 169] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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257
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Hamberg M. Decomposition of unsaturated fatty acid hydroperoxides by hemoglobin: Structures of major products of 13L-hydroperoxy-9,11-octadecadienoic acid. Lipids 1975; 10:87-92. [PMID: 1167926 DOI: 10.1007/bf02532161] [Citation(s) in RCA: 143] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
13L-hydroperoxy-9, 11-octadecadienoic acid was decomposed rapidly in the presence of hemoglobin. The product consisted of five major compounds, i.e. 13-keto-9, 11-octadecadienoic acid, 13L-hydroxy-9, 11-octadecadienoic acid, erythro-11-hydroxy-12, 13-epoxy-9-octadecenoic acid, threo-11-hydroxy-12, 13-epoxy-9-octadecenoic acid, and 9 DL-hydroxy-12, 13-epoxy-10-octadecenoic acid.
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258
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Corey EJ, Ensley HE, Hamberg M, Samuelsson B. Disparate pathways of prostaglandin biosynthesis in coral and mammalian systems. ACTA ACUST UNITED AC 1975. [DOI: 10.1039/c39750000277] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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259
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Nishizawa EE, Miller WL, Gorman RR, Bundy GL, Svensson J, Hamberg M. Prostaglandin d2 as a potential antithrombotic agent. PROSTAGLANDINS 1975; 9:109-21. [PMID: 806102 DOI: 10.1016/s0090-6980(75)80122-5] [Citation(s) in RCA: 97] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Prostaglandin D2 was found to be a potent inhibitor of platelet aggregation. Aggregation of human platelets by ADP, collagen and prostaglandin G2 was inhibited more strongly by PGD2 than by PGE1. Although ADP-induced aggregation of rabbit platelets was inhibited more strongly by PGE1 than by PGD2 the latter prostaglandin gave a more long-lasting inhibitory effect on platelet aggregation following intravenous or oral administration. These results coupled with the finding that PGD2 has less hypotensive effects on the cardiovascular system than PGE1 suggest the possible use of PGD2 as an antithrombotic agent.
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260
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Hamberg M, Samuelsson B. Prostaglandin endoperoxides. VII. Novel transformations of arachidonic acid in guinea pig lung. Biochem Biophys Res Commun 1974; 61:942-9. [PMID: 4451568 DOI: 10.1016/0006-291x(74)90246-0] [Citation(s) in RCA: 191] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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261
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Hamberg M, Svensson J, Samuelsson B. Prostaglandin endoperoxides. A new concept concerning the mode of action and release of prostaglandins. Proc Natl Acad Sci U S A 1974; 71:3824-8. [PMID: 4530264 PMCID: PMC434276 DOI: 10.1073/pnas.71.10.3824] [Citation(s) in RCA: 341] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Methods were developed for quantitative determination of the three major metabolites of arachidonic acid in human platelets, i.e., 12L-hydroxy-5,8,10,14-eicosatetraenoic acid (HETE), 12L-hydroxy-5,8,10-heptadecatrienoic acid (HHT) and 8-(1-hydroxy-3-oxopropyl)-9,12L-dihydroxy-5,10-heptadecadienoic acid (PHD). Aggregation of washed platelets by thrombin was accompanied by release of 1163-2175 ng/ml of HETE, 1129-2430 ng/ml of HHT, and 998-2299 ng/ml of PHD. The amount of PGG(2) (prostaglandin G(2)) produced as calculated from the sum of the amounts of its metabolites (HHT and PHD) was 2477-5480 ng/ml. In contrast, the amounts of PGE(2) (prostaglandin E(2)) and PGF(2alpha) (prostaglandin F(2alpha)) released were approximately two orders of magnitude lower. In this system, the prostaglandins thus exert their biological action through the endoperoxides, which are almost exclusively metabolized to nonprostanoate structures and only to a small extent to the classical prostaglandins. Platelets from subjects given aspirin produced less than 5% of the above mentioned amounts of HHT and PHD, whereas the production of HETE was stimulated about 3-fold. This provides additional evidence for our earlier proposal [Hamberg, M., Svensson, J., Wakabayashi, T. & Samuelsson, B. (1974) Proc. Nat. Acad. Sci. USA 71, 345-349] that the anti-aggregating effect of aspirin is through inhibition of PGG(2) formation.
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262
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Hamberg M, Samuelsson B. Prostaglandin endoperoxides. Novel transformations of arachidonic acid in human platelets. Proc Natl Acad Sci U S A 1974; 71:3400-4. [PMID: 4215079 PMCID: PMC433780 DOI: 10.1073/pnas.71.9.3400] [Citation(s) in RCA: 1020] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Arachidonic acid incubated with human platelets was converted into three compounds, 12L-hydroxy-5,8,10,14-eicosatetraenoic acid, 12L-hydroxy-5,8,10-heptadecatrienoic acid, and the hemiacetal derivative of 8-(1-hydroxy-3-oxopropyl)-9,12L-dihydroxy-5,10-heptadecadienoic acid. The formation of the two latter compounds from arachidonic acid proceeded by pathways involving the enzyme, fatty acid cyclo-oxygenase, in the initial step and with the prostaglandin endoperoxide, PGG(2), as an intermediate. The first mentioned compound was formed from 12L-hydroperoxy-5,8,10,14-eicosatetraenoic acid, which in turn was formed from arachidonic acid by the action of a novel lipoxygenase. Aspirin and indomethacin inhibited the fatty acid cyclo-oxygenase but not the lipoxygenase, whereas 5,8,11,14-eicosatetraynoic acid inhibited both enzymes. The almost exclusive transformation of the endoperoxide structure into non-prostaglandin derivatives supports the hypothesis that the endoperoxides can participate directly and not by way of the classical prostaglandins in regulation of cell functions. The observed transformations of arachidonic acid in platelets also explain the aggregating effect of this acid.
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263
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Strandberg K, Hamberg M. Icreased excretion of 5alpha, 7alpha-dihydroxy-11-keto-tetranor-prostanoic acid on anaphylaxis in the guinea-pig. PROSTAGLANDINS 1974; 6:159-70. [PMID: 4847515 DOI: 10.1016/0090-6980(74)90027-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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265
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Hamberg M, Svensson J, Wakabayashi T, Samuelsson B. Isolation and structure of two prostaglandin endoperoxides that cause platelet aggregation. Proc Natl Acad Sci U S A 1974; 71:345-9. [PMID: 4521806 PMCID: PMC388001 DOI: 10.1073/pnas.71.2.345] [Citation(s) in RCA: 687] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Incubation for a short time of arachidonic acid with the microsomal fraction of a homogenate of the vesicular gland of sheep in the presence of 1 mM p-mercuribenzoate followed by extraction and silicic acid chromatography yielded two prostaglandin endoperoxides. The structures of these compounds, i.e., 15-hydroperoxy-9alpha,11alpha-peroxidoprosta-5,13-dienoic acid (prostaglandin G(2)) and 15-hydroxy-9alpha,11alpha-peroxidoprosta-5,13-dienoic acid (prostaglandin H(2)), were assigned mainly by a number of chemical transformations into previously known prostaglandins. The new prostaglandins were 50-200 times (prostaglandin G(2)) and 100-450 times (prostaglandin H(2)) more active than prostaglandin E(2) on the superfused aorta strip. The half-life of the prostaglandin endoperoxides in aqueous medium (about 5 min) was significantly longer than that of "rabbit aorta-contracting substance" released from guinea pig lung, indicating that none of the prostaglandin endoperoxides is identical with this factor. Addition of 10-300 ng/ml of the endoperoxides to suspensions of washed human platelets resulted in rapid aggregation. Furthermore, platelet aggregation induced by thrombin was accompanied by release of material reducible by stannous chloride into prostaglandin F(2alpha), thus indicating the involvement of endogenous prostaglandin endoperoxides in platelet aggregation.
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266
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Hamberg M. Quantitative studies on prostaglandin synthesis in man. 3. Excretion of the major urinary metabolite of prostaglandins F 1 alpha and F 2 alpha during pregnancy. Life Sci 1974; 14:247-52. [PMID: 4813589 DOI: 10.1016/0024-3205(74)90054-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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267
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Hamberg M, Gotthammar B. A new reaction of unsaturated fatty acid hydroperoxides: Formation of 11-hydroxy-12,13-epoxy-9-octadecenoic acid from 13-hydroperoxy-9,11-octadecadienoic acid. Lipids 1973. [DOI: 10.1007/bf02531842] [Citation(s) in RCA: 102] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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268
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Hamberg M. Quantitative studies on prostaglandin synthesis in man. II. Determination of the major urinary metabolite of prostaglandins F1 alpha and F2 alpha. Anal Biochem 1973; 55:368-78. [PMID: 4750680 DOI: 10.1016/0003-2697(73)90125-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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269
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Hamberg M, Samuelsson B. Detection and isolation of an endoperoxide intermediate in prostaglandin biosynthesis. Proc Natl Acad Sci U S A 1973; 70:899-903. [PMID: 4514999 PMCID: PMC433384 DOI: 10.1073/pnas.70.3.899] [Citation(s) in RCA: 489] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
An earlier proposed endoperoxide intermediate in the biosynthesis of prostaglandins was detected in short-time incubations of arachidonic acid with the microsomal fraction of homogenates of sheep vesicular glands. Conversion of the endoperoxide into prostaglandin E(2) was stimulated by reduced glutathione but suppressed by p-mercuribenzoate and N-ethylmaleimide. The methyl ester of an unknown compound was isolated by solvent extraction and thin-layer chromatography after short-time incubation of arachidonic acid with the microsomal fraction and p-mercuribenzoate. This derivative was identical to the methylester of the endoperoxide, as shown by its conversion into the methyl esters of 11-dehydroprostaglandin F(2alpha) and prostaglandin E(2) by spontaneous rearrangement and its conversion into the methyl ester of prostaglandin F(2alpha) by mild chemical reduction. The smooth muscle-stimulating activity of the endoperoxide ester on the isolated rabbit aortas trip was 4- to 8-times higher than that of the methyl ester of prostaglandin E(2).
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270
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Hammarström S, Hamberg M. Steric analysis of 3-, 4, 3- and 2-hydroxy acids and various alkanols by gas-liquid chromatography. Anal Biochem 1973; 52:169-79. [PMID: 4696686 DOI: 10.1016/0003-2697(73)90342-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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271
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Hamberg M, Jonsson CE. Increased synthesis of prostaglandins in the guinea pig following scalding injury. ACTA PHYSIOLOGICA SCANDINAVICA 1973; 87:240-5. [PMID: 4718207 DOI: 10.1111/j.1748-1716.1973.tb05386.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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272
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Arturson G, Hamberg M, Jonsson CE. Prostaglandins in human burn blister fluid. ACTA PHYSIOLOGICA SCANDINAVICA 1973; 87:270-6. [PMID: 4718210 DOI: 10.1111/j.1748-1716.1973.tb05390.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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273
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274
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Hamberg M, Samuelsson B. On the metabolism of prostaglandins E 1 and E 2 in the guinea pig. J Biol Chem 1972; 247:3495-502. [PMID: 5030629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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275
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276
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Björkhem I, Hamberg M. On the rate-limiting step in W-hydroxylation of lauric acid. Biochem Biophys Res Commun 1972; 47:333-40. [PMID: 4662395 DOI: 10.1016/0006-291x(72)90717-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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277
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Björkhem I, Hamberg M. -Oxidation of fatty acids. II. Enzymatic oxido-reduction of 17-hydroxystearic acid. J Biol Chem 1971; 246:7417-20. [PMID: 4400075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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278
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Hamberg M, Björkhem I. -Oxidation of fatty acids. I. Mechanism of microsomal 1- and 2-hydroxylation. J Biol Chem 1971; 246:7411-6. [PMID: 5135309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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279
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Hamberg M, Samuelsson B. On the metabolism of prostaglandins E 1 and E 2 in man. J Biol Chem 1971; 246:6713-21. [PMID: 5126221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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280
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281
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Hamberg M. Steric analysis of hydroperoxides formed by lipoxygenase oxygenation of linoleic acid. Anal Biochem 1971; 43:515-26. [PMID: 5168775 DOI: 10.1016/0003-2697(71)90282-x] [Citation(s) in RCA: 216] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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282
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Hamberg M. Resolution of stereoisomers of ω2-hydroxy acids and 2-alkanols by gas-liquid chromatography. Chem Phys Lipids 1971. [DOI: 10.1016/0009-3084(71)90039-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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283
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Hamberg M, Israelsson U, Samuelsson B. Metabolism of prostaglandin E 2 in guinea pig liver. Ann N Y Acad Sci 1971; 180:164-80. [PMID: 5286097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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284
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Hamberg M, Samuelsson B. Metabolism of prostaglandin E2 in guinea pig liver. II. Pathways in the formation of the major metabolites. J Biol Chem 1971; 246:1073-7. [PMID: 5543672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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285
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286
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Samuelsson B, Hamberg M, Sweeley CC. Quantitative gas chromatography of prostaglandin E1 at the Nanogram level: use of deuterated carrier and multiple-ion analyzer. Anal Biochem 1970; 38:301-4. [PMID: 5478247 DOI: 10.1016/0003-2697(70)90184-3] [Citation(s) in RCA: 126] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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287
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Hamberg M, Israelsson U. Metabolism of prostaglandin E2 in guinea pig liver. I. Identification of seven metabolites. J Biol Chem 1970; 245:5107-14. [PMID: 5506277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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288
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Israelsson U, Hamberg M, Samuelsson B. Biosynthesis of 19-hydroxy-prostaglandin A1. EUROPEAN JOURNAL OF BIOCHEMISTRY 1969; 11:390-4. [PMID: 4391227 DOI: 10.1111/j.1432-1033.1969.tb00785.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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289
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290
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Hamberg M, Samuelsson B. The structure of the major urinary metabolite of prostaglandin E2 in man. J Am Chem Soc 1969; 91:2177-8. [PMID: 5784182 DOI: 10.1021/ja01036a092] [Citation(s) in RCA: 80] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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291
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Hamberg M, Samuelsson B. The structure of a urinary metabolite of prostaglandin E2 in the guinea pig. Biochem Biophys Res Commun 1969; 34:22-7. [PMID: 5762456 DOI: 10.1016/0006-291x(69)90522-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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292
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Hamberg M. On the absolute configuration of 19-hydroxy-prostaglandin B1. EUROPEAN JOURNAL OF BIOCHEMISTRY 1968; 6:147-50. [PMID: 5725807 DOI: 10.1111/j.1432-1033.1968.tb00431.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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293
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294
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Hamberg M, Niehaus WG, Samuelsson B. Preparation, isolation, and characterization of a derivative of malonaldehyde. Anal Biochem 1968; 22:145-53. [PMID: 5636945 DOI: 10.1016/0003-2697(68)90268-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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295
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Hamberg M, Samuelsson B. On the specificity of the oxygenation of unsaturated fatty acids catalyzed by soybean lipoxidase. J Biol Chem 1967; 242:5329-35. [PMID: 6070850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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296
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Hamberg M, Samuelsson B. On the mechanism of the biosynthesis of prostaglandins E-1 and F-1-alpha. J Biol Chem 1967; 242:5336-43. [PMID: 6070851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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297
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Hamberg M, Samuelsson B. Oxygenation of unsaturated fatty acids by the vesicular gland of sheep. J Biol Chem 1967; 242:5344-54. [PMID: 6070852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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298
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299
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Hamberg M, Samuelsson B. Oxygenation of Unsaturated Fatty Acids by the Vesicular Gland of Sheep. J Biol Chem 1967. [DOI: 10.1016/s0021-9258(18)99434-2] [Citation(s) in RCA: 233] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Hamberg M, Samuelsson B. On the Specificity of the Oxygenation of Unsaturated Fatty Acids Catalyzed by Soybean Lipoxidase. J Biol Chem 1967. [DOI: 10.1016/s0021-9258(18)99432-9] [Citation(s) in RCA: 551] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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