Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:3.2.1.31 (beta-glucuronidase)
 7,680 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Several nonsteroid anti-inflammatory agents were evaluated for their capacity to modulate phagocytosis by and lysosomal enzyme secretion from polymorphonuclear neutrophils. During cell contact with and phagocytosis of serum-treated zymosan particles, guinea-pig neutrophils demonstrated a selective extracellular release of lysosome granule-associated beta-glucuronidase and acid protease but not cytoplasmic lactate dehydrogenase. Ketoprofen, suprofen, diftalone, benoxaprofen and Abbott 29590 inhibited particle uptake by and lysosomal enzyme release from neutrophils incubated with zymosan in Krebs-Ringer phosphate medium containing 7.5 mM glucose, pH 7.4, AT 37 degrees C. Flazalone and sulindac were inactive. In the presence of cytochalasin B, an agent which inhibits phagocytosis while having no effect on the selective discharge of lysosomal enzymes, ketoprofen, suprofen, diftalone, benoxaprofen and Abbott 29590 continued to inhibit the release of beta-glucuronidase and acid protease from neutrophils. An investigation of the properties of guinea-pig neutrophil acid protease activity revealed a pH optimum of 3.5. Activity was inhibited by diazoacetyl-DL-norleucine methyl ester and p-hydroxyphenylpyruvic acid. Sulfhydryl inhibitors, chelating agents and soybean trypsin inhibitor had no effect on neutrophil acid protease activity. These studies indicate that certain nonsteroid anti-inflammatory agents may function as regulators of the phagocytic secretion of lysosomal enzymes from neutrophils; and that these neutrophils contain an acid protease which resembles an enzyme known to mediate tissue destruction in several inflammatory diseases.
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PMID:Nonsteroid anti-inflammatory agents: regulators of the phagocytic secretion of lysosomal enzymes from guinea-pig neutrophils. 71 44

A sensitive analytical method was developed for quantitative analysis of delta(9)-tetrahydrocannabinol (delta(9)-THC), 11-nor-delta(9)-tetrahydrocannabinol-carboxylic acid (delta(9)-THC-COOH), cannabinol (CBN) and cannabidiol (CBD) in human hair. The identification of delta(9)-THC-COOH in hair would document Cannabis use more effectively than the detection of parent drug (delta(9)-THC) which might have come from environmental exposure. Ketamine was added to hair samples as internal standard for CBN and CBD. Ketoprofen was added to hair samples as internal standard for the other compounds. Samples were hydrolyzed with beta-glucuronidase/arylsulfatase for 2h at 40 degrees C. After cooling, samples were extracted with a liquid-liquid extraction procedure (with chloroform/isopropyl alcohol, after alkalinization, and n-hexane/ethyl acetate, after acidification), which was developed in our laboratory. The extracts were analysed before and after derivatization with pentafluoropropionic anhydride (PFPA) and pentafluoropropanol (PFPOH) using a Hewlett Packard gas chromatographer/mass spectrometer detector, in electron impact mode (GC/MS-EI). Derivatized delta(9)-THC-COOH was also analysed using a Hewlett Packard gas chromatographer/mass spectrometer detector, in negative ion chemical ionization mode (GC/MS-NCI) using methane as the reagent gas. Responses were linear ranging from 0.10 to 5.00 ng/mg hair for delta(9)-THC and CBN, 0.10-10.00 ng/mg hair for CBD, 0.01-5.00 ng/mg for delta(9)-THC-COOH (r(2)>0.99). The intra-assay precisions ranged from <0.01 to 12.40%. Extraction recoveries ranged from 80.9 to 104.0% for delta(9)-THC, 85.9-100.0% for delta(9)-THC-COOH, 76.7-95.8% for CBN and 71.0-94.0% for CBD. The analytical method was applied to 87 human hair samples, obtained from individuals who testified in court of having committed drug related crimes. Quantification of delta(9)-THC-COOH using GC/MS-NCI was found to be more convenient than GC/MS-EI. The latter may give rise to false negatives due to the detection limit.
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PMID:Hair analysis for delta(9)-THC, delta(9)-THC-COOH, CBN and CBD, by GC/MS-EI. Comparison with GC/MS-NCI for delta(9)-THC-COOH. 1220 25