Search Results - "Pyrek, Jan St"

Assay for nipecotic acid in small blood samples by gas chromatography–mass spectroscopy by Wang, Hongna, Hussain, Anwar A., Pyrek, Jan St, Goodman, Jack, Wedlund, Peter J.

“…An analytical method for nipecotic acid quantification in rat blood was developed utilizing a stable isotope internal standard and capillary gas…”
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Analysis of the Subsite Specificity of Rat Insulysin Using Fluorogenic Peptide Substrates by Song, Eun-Suk, Mukherjee, Atish, Juliano, Maria Aparecida, Pyrek, Jan St, Goodman, Jack P., Juliano, Luiz, Hersh, Louis B.

“…Recombinant rat insulysin was shown to cleave the internally quenched fluorogenic peptide 2-aminobenzyl-GGFLRKVGQ-ethylenediamine-2,4-dinitrophenol at the R–K…”
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Studies on the Subsite Specificity of Rat Nardilysin (N-Arginine Dibasic Convertase) by Chow, K.Martin, Csuhai, Eva, Juliano, Maria Aparecida, St. Pyrek, Jan, Juliano, Luiz, Hersh, Louis B.

“…The subsite specificity of rat nardilysin was investigated using fluorogenic substrates of the type…”
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New Fluorogenic Substrates forN-Arginine Dibasic Convertase by Csuhai, Eva, Juliano, Maria Aparecida, Pyrek, Jan St, Harms, Amy C., Juliano, Luiz, Hersh, Louis B.

“…N-Arginine dibasic (NRD) convertase is a recently described peptidase capable of selectively cleaving peptides between paired basic residues. The…”
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Synthesis of Biomarkers in Fossil Fuels. 8. Synthesis of a Triaromatic Steroid Biomarker, (20R,24R)-4,17.beta.-Dimethyl-18,19-dinorstigmasta-1,3,5,7,9,11,13-heptaene, from Stigmasterol by Stoilov, Ivan, Shetty, Rupa, St. Pyrek, Jan, Smith, Stanford L, Layton, W. John, Watt, David S, Carlson, Robert M. K, Moldowan, J. Michael

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Diversity of Bile Acids in the Fetus and Newborn Infant by Lester, Roger, Pyrek, Jan St, Little, J. M., Adcock, Eugene W.

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Insulysin Hydrolyzes Amyloid beta Peptides to Products That Are Neither Neurotoxic Nor Deposit on Amyloid Plaques by Mukherjee, Atish, Song, Eun-suk, Kihiko-Ehmann, Muthoni, Goodman, Jack P., Jr, Pyrek, Jan St, Estus, Steven, Hersh, Louis B

“…Insulysin (EC. 3.4.22.11) has been implicated in the clearance of beta amyloid peptides through hydrolytic cleavage. To further study the action of insulysin…”
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Metabolism of 24-norlithocholic acid in the rat: formation of hydroxyl- and carboxyl-linked glucuronides and effect on bile flow by Shattuck, K E, Radominska-Pyrek, A, Zimniak, P, Adcock, E W, Lester, R, St Pyrek, J

“…24-Norlithocholic (3 alpha-hydroxy-24-nor-5 beta-cholan-23-oic) acid is the lower homologue of lithocholic acid, a potent cholestatic agent. In order to…”
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2,3-Dihydrofarnesoic acid, a unique terpene from trichomes ofLycopersicon hirsutum, repels spider mites by Snyder, John C., Guo, Zhenhua, Thacker, Richard, Goodman, Jack P., Pyrek, Jan St

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Mass spectrometry at low and high mass by Pyrek, Jan St

“…The introduction of novel methods as well as expanding applications to diverse areas highlight truly impressive progress in mass spectrometry. These…”
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Biotinylated Phosphatidylinositol 3,4,5-Trisphosphate as Affinity Ligand by Wang, Da-Sheng, Ching, Tsui-Ting, St. Pyrek, Jan, Chen, Ching-Shih

“…Phosphatidylinositol 3,4,5-trisphosphate (PIP3), a primary output signal of phosphoinositide (PI) 3-kinase, plays a crucial role in diverse cellular processes…”
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New fluorogenic substrates for N-arginine dibasic convertase by Csuhai, E, Juliano, M A, Pyrek, J S, Harms, A C, Juliano, L, Hersh, L B

“…N-Arginine dibasic (NRD) convertase is a recently described peptidase capable of selectively cleaving peptides between paired basic residues. The…”
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2,3-Dihydrofarnesoic acid, a unique terpene from trichomes of Lycopersicon hirsutum, repels spider mites by Snyder, J.C, Guo, Z, Thacker, R, Goodman, J.P, St Pyrek, J

“…Lycopersicon hirsutum, a wild relative of the tomato, is highly resistant to arthropod herbivores. Both botanic forms of L. hirsutum, L. hirsutum f. glabratum…”
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Neutral Diterpenoids of Helianthus annuus by Pyrek, Jan St

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Interception of discrete oxygen species in aqueous media by cholesterol: Formation of cholesterol epoxides and secosterols by Gumulka, Jerzy, Pyrek, Jan St, Smith, Leland L.

“…The oxidation products of cholesterol oxidized by different dioxygen species, hydroxyl radical, or triatomic species ozone variously implicated in biological…”
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Synthesis of a triaromatic steroid biomarker. (20R,24R)-4,17β-dimethyl-18,19-dinorstigmasta-1,3,5,7,9,11,13-heptaene, from stigmasterol by STOILOV, I, RUPA SHETTY, PYREK, J. ST, SMITH, S. L, LAYTON, V. J, WATT, D. S, CARLSON, R. M. K, MOLDOWAN, J. M

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Hepatic metabolism of 3-oxoandrost-4-ene-17 beta-carboxylic acid in the adult rat: formation of carboxyl-linked glucuronides both in vivo and in vitro by Radominska, A, Little, J M, Lester, R, St Pyrek, J

“…The hepatic metabolism of 3-oxoandrost-4-ene-17 beta-carboxylic acid (etienic acid), a probable acidic catabolite of deoxycorticosterone, was investigated…”
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Metabolites of nuatigenin ((22S,25S)22,25-epoxy-3 beta, 26-dihydroxy-furost-5-ene) accumulate in the bile of rabbits fed oats by St Pyrek, J, Aggarval, S K, Barboza, P, Goodman, J P, Yang, P Y

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Enzymatic formation and chemical synthesis of an active metabolite of 3 beta-hydroxy-5 alpha-cholest-8(14)-en-15-one, a potent regulator of cholesterol metabolism by Schroepfer, Jr, G J, Kim, H S, Vermilion, J L, Stephens, T W, Pinkerton, F D, Needleman, D H, Wilson, W K, St Pyrek, J

“…The enzymatic (rat liver mitochondria) conversion of 3 beta-hydroxy-5 alpha-cholest-8(14)-en-15-one to 5 alpha-cholest-8(14)-ene-3 beta,26-diol-15-one is…”
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Carbon-carbon bond-forming additions to 1-alkyl-3-acylpyridinium salts by Wenkert, Ernest, Angell, E. Charles, Drexler, Josef, Moeller, Peter D. R, Pyrek, Jan St, Shi, Yao Jun, Sultana, Mumtaz, Vankar, Yashwant D

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