Results 111 to 120 of about 82,695 (167)
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Journal of the Chemical Society C: Organic, 1970
P(1)P(2)-Dicholesteryl and tetracholesteryl pyrophosphate have been obtained from the corresponding phosphorochloridates, and by treatment of the phosphates with dicyclohexylcarbodi-imide. These compounds are different from the di- and tetra-cholesteryl pyrophosphates previously reported.
R J, Cremlyn, N A, Olsson
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P(1)P(2)-Dicholesteryl and tetracholesteryl pyrophosphate have been obtained from the corresponding phosphorochloridates, and by treatment of the phosphates with dicyclohexylcarbodi-imide. These compounds are different from the di- and tetra-cholesteryl pyrophosphates previously reported.
R J, Cremlyn, N A, Olsson
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Magnetic Structure of Manganese Pyrophosphate and Copper Pyrophosphate
Canadian Journal of Physics, 1972The magnetic structures of antiferromagnetic manganese pyrophosphate and copper pyrophosphate have been determined by single crystal neutron diffraction techniques. There have been two previous determinations of the structure of manganese pyrophosphate.
J. A. R. Stiles, C. V. Stager
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Metabolism of extracellular pyrophosphate
Current Opinion in Rheumatology, 2003Accumulation of excess inorganic pyrophosphate in cartilage matrix leads to calcium pyrophosphate dihydrate crystal deposits. Recent animal and human studies now support a role for physiologic extracellular pyrophosphate levels in preventing ectopic apatite calcification in joints and extracellular tissues.
Lawrence M, Ryan, Ann K, Rosenthal
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THE OCCURRENCE OF PYROPHOSPHATE IN BONE
The Journal of Bone and Joint Surgery. British volume, 1958A small proportion of the total phosphate in normal bone salt occurs in the form of pyrophosphate. The deposit formed in vitro on incubation of rachitic cartilage with a calcifying medium does not contain pyrophosphate unless ATP is added to the medium, in which case the proportion of pyrophosphate is of the same order as that found in normal bone.
H R, PERKINS, P G, WALKER
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Calcium pyrophosphate and pseudogout
Arthroscopy, 1985Abstract Calcium pyrophosphate deposition disease (CPDD) is a condition in which calcium pyrophosphate dihydrate crystals are deposited in joint articular cartilage, menisci, and synovium. The main clinical presentations of CPDD are chondrocalcinosis—calcification of cartilage, pseudogout—acute joint inflammation due to crystal ...
B, Zarins, V K, McInerney
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Pyrophosphate myocardial imaging
Seminars in Nuclear Medicine, 1980Technetium-99m pyrophosphate myocardial scintigraphy is a sensitive indicator of acute myocardial infarction (AMI). Over 90% of acute myocardial infarctions will result in an abnormal scintigram. The sensitivity is highest for transmural myocardial infarction, reaching levels of 95% or better.
K P, Lyons, H G, Olson, W S, Aronow
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Journal of the American Chemical Society, 2004
We report the crystallographic structures of the potent phosphoantigens Phosphostim (the bromohydrin of isopentenyl pyrophosphate) and E-4-hydroxy-3-methyl-but-2-enyl pyrophosphate bound to the mevalonate pathway enzyme isopentenyl pyrophosphate/dimethylallyl pyrophosphate isomerase (IPPI).
Wouters, Johan +8 more
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We report the crystallographic structures of the potent phosphoantigens Phosphostim (the bromohydrin of isopentenyl pyrophosphate) and E-4-hydroxy-3-methyl-but-2-enyl pyrophosphate bound to the mevalonate pathway enzyme isopentenyl pyrophosphate/dimethylallyl pyrophosphate isomerase (IPPI).
Wouters, Johan +8 more
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FORMATION OF A NONALLYLIC HOMONERYL PYROPHOSPHATE BY FARNESYL PYROPHOSPHATE SYNTHETASE
Chemistry Letters, 1975Abstract The reaction of 4-methylpent-4-enyl pyrophosphate (1) with dimethylallyl pyrophosphate (2) catalyzed by farnesyl pyrophosphate synthetase (prenyltransferase) results in an exclusive cis condensation to give a nonallylic homoneryl pyrophosphate (3).
Akio Saito, Kyozo Ogura, Shuichi Seto
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