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Showing 1-30 of 31 results for "246352" within Papers
P C Chan et al.
Japanese journal of cancer research : Gann, 83(3), 258-263 (1992-03-01)
Short-term and long-term carcinogenicity of methyl carbamate (MCB) was evaluated in F344 rats and B6C3F1 mice. In experiments lasting 6, 12, and 18 months, MCB was given in water by gavage to groups of 10 male and 10 female rats
N P Sen et al.
Food additives and contaminants, 9(2), 149-160 (1992-03-01)
A method is described for the simultaneous determination of methyl carbamate (MC) and ethyl carbamate (EC) in wines that is based on: (a) extraction of the sample with dichloromethane using an extraction tube or an alumina-Celite column, (b) concentration of
Jean Demaison et al.
The journal of physical chemistry. A, 111(13), 2574-2586 (2007-03-29)
Planarity of the XC(=)NHY linkage has been investigated in unprecedented detail in a number of relatively simple compounds, including formamide (X = Y = H), acetamide (X = CH3, Y = H), urea (X = NH2, Y = H), carbamic
Helen E Carter et al.
Pest management science, 69(9), 1040-1048 (2013-06-14)
Methyl benzimidazole carbamate (MBC) fungicides are used to control the oilseed rape pathogen Pyrenopeziza brassicae. Resistance to MBCs has been reported in P. brassicae, but the molecular mechanism(s) associated with reductions in sensitivity have not been verified in this species.
Xusheng Shao et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(43), 17273-17277 (2013-10-11)
The nicotinic acetylcholine (ACh) receptor (nAChR) is the principal insecticide target. Nearly half of the insecticides by number and world market value are neonicotinoids acting as nAChR agonists or organophosphorus (OP) and methylcarbamate (MC) acetylcholinesterase (AChE) inhibitors. There was no
X Sun et al.
Bioorganic & medicinal chemistry letters, 11(14), 1881-1884 (2001-07-19)
With the aim of identifying safer pseudomycin derivatives, we synthesized and evaluated a number of N-acyloxymethyl carbamate linked prodrugs of 3-amido pseudomycin analogues. To our satisfaction, all of the prodrug-amide combinations prepared exhibited good in vivo efficacy against murine Candidiasis.
M S Rashed et al.
Rapid communications in mass spectrometry : RCM, 3(10), 360-363 (1989-10-01)
Liquid chromatography/thermospray mass spectrometry (LC/TSP-MS) has been used to identify and study the rates of formation of S-(N-methylcarbamoyl)cysteine and S-(N-methylcarbamoyl)glutathione as products of the in vitro reaction of cysteine and glutathione, respectively, with two monomethylcarbamate metabolites of the bronchodilator pro-drug
Tatheer Naqvi et al.
Journal of biotechnology, 144(2), 89-95 (2009-09-23)
The methyl carbamate-degrading hydrolase (MCD) of Achromobacter WM111 has considerable potential as a pesticide bioremediation agent. However this potential has been unrealisable until now because of an inability to express MCD in heterologous hosts such as Escherichia coli. Herein, we
Catharina Wesseling et al.
Occupational and environmental medicine, 67(11), 778-784 (2010-08-28)
Neuropsychiatric disorders and increased suicide rates have been associated with exposure to cholinesterase inhibiting organophosphates. This study examined symptoms of psychological distress, including suicidal ideation, among banana workers in Costa Rica previously exposed to a cholinesterase inhibiting pesticide. 78 workers
F K Zimmermann et al.
Mutation research, 270(2), 151-166 (1992-11-16)
Induction of mitotic chromosome loss could be demonstrated for the dialdehyde glyoxal, the diketones 2,3-butanedione and 2,3-hexanedione, ethyl and methyl carbamate, ethyl acrylate, dibromoacetonitrile, 2-hydroxypropionitrile and formaldehyde, but only when they were combined with subacute concentrations of propionitrile, which is
John E Casida et al.
Chemico-biological interactions, 203(1), 221-225 (2012-08-29)
The anticholinesterase (antiChE) organophosphorus (OP) and methylcarbamate (MC) insecticides have been used very effectively as contact and systemic plant protectants for seven decades. About 90 of these compounds are still in use - the largest number for any insecticide chemotype
D F K Rawn et al.
Food additives and contaminants, 23(7), 651-659 (2006-06-06)
Seven parent N-methyl carbamate insecticides, in addition to two transformation products of aldicarb (aldicarb sulfoxide and aldicarb sulfone), and a single transformation product of carbofuran (3-hydroxycarbofuran) were measured in infant and junior foods available on the Canadian retail market between
Peter C Burgers et al.
European journal of mass spectrometry (Chichester, England), 18(2), 149-159 (2012-05-30)
Early combined computational and experimental studies by J.K. Terlouw c.s. in Refs. 1-3 propose that low-energy methyl carbamate ions, NH(2)COOCH(3)(•+) (MC-1), rearrange into distonic ions NH(2)C(OH)OCH(2)(•+) and hydrogen-bridged radical cations [NH(2)C=O--H--OCH(2)](•+) (MC-5) en route to the observed losses of HCO(•)
Anton I Rosenbaum et al.
Journal of medicinal chemistry, 53(14), 5281-5289 (2010-06-19)
Niemann-Pick type C (NPC) disease is a lysosomal storage disorder characterized at the cellular level by abnormal accumulation of cholesterol and other lipids in lysosomal storage organelles. Lysosomal acid lipase (LAL) has been recently identified as a potential therapeutic target
Tomomi Goto
Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan, 130(8), 999-1010 (2010-08-06)
One of the major roles of public health agencies is to ensure safe products for consumers through analysis of residual agricultural chemicals and veterinary drugs in foods. The use of agricultural chemicals and veterinary drugs in agriculture is necessary to
S Desaint et al.
Journal of applied microbiology, 95(1), 102-108 (2003-06-17)
To investigate the role of horizontal gene transfer of mcd (methylcarbamate-degrading) gene in high genetic diversity of carbofuran-degrading bacteria. The actuality of genetic transfer from degraders to an Agrobacterium tumefaciens strain was determined in liquid medium. The mcd gene was
X Sun et al.
Bioorganic & medicinal chemistry letters, 11(14), 1875-1879 (2001-07-19)
We describe herein the synthesis, bioconversion, antifungal activity, and preliminary toxicology evaluation of a series of N-acyloxymethyl carbamate linked triprodrugs of pseudomycins. The syntheses of these prodrugs (3-6) were achieved via simple N-acylation of PSB (1) or PSC' (2) with
R G Ames et al.
Archives of environmental health, 50(6), 440-444 (1995-11-01)
To test the hypothesis that chronic neurologic sequelae are associated with cholinesterase depression short of frank organophosphate poisoning, we compared 45 male subjects who had a history of moderate cholinesterase inhibition with 90 male subjects who had neither past cholinesterase
S W Cha et al.
Toxicology letters, 115(3), 173-181 (2000-05-18)
Ethyl carbamate, a potent carcinogen, has been characterized to be metabolized by cytochrome P450 (P450) and esterase. It has recently been demonstrated that P450 may activate ethyl carbamate to immunotoxic metabolites. To investigate the role of esterase in ethyl carbamate-induced
Shingo Ishikawa et al.
Angewandte Chemie (International ed. in English), 52(38), 10060-10063 (2013-08-06)
Easy as 1,2,3: Reaction of methyl carbamate, triethyl orthoformate, and readily available alkenes provides a highly practical preparation of protected aminocyclopropanes. The reaction proceeds with preferential cis addition to alkenes, and cleavage of the methyl carbamate gives the free aminocyclopropanes
Michael A Wheeler et al.
Cell, 176(3), 581-596 (2019-01-22)
Genome-wide studies have identified genetic variants linked to neurologic diseases. Environmental factors also play important roles, but no methods are available for their comprehensive investigation. We developed an approach that combines genomic data, screens in a novel zebrafish model, computational
Genotoxicity data supporting the proposed metabolic activation of ethyl carbamate (urethane) to a carcinogen: the problem now posed by methyl carbamate.
J Ashby
Mutation research, 260(4), 307-308 (1991-08-01)
Comparative cytotoxicity between butylated hydroxytoluene and its methylcarbamate derivative, terbucarb, on isolated rat hepatocytes.
Y Nakagawa et al.
Bulletin of environmental contamination and toxicology, 52(4), 511-515 (1994-04-01)
Methyl carbamate: negative results in mouse bone-marrow micronucleus test.
M D Shelby et al.
Mutation research, 260(4), 311-311 (1991-08-01)
Geert Van Biesen et al.
Electrophoresis, 27(22), 4456-4468 (2006-10-24)
Ammonium perfluorooctanoate (APFOA) was investigated as an MS-friendly surfactant for the analysis of a mixture of ten N-methylcarbamates with MEKC-ESI-MS. Because of the relatively low boiling point of perfluorooctanoic acid ( approximately 190 degrees C), APFOA can be introduced into
Joshua A Hartsel et al.
Bioorganic & medicinal chemistry letters, 22(14), 4593-4598 (2012-06-29)
To identify potential human-safe insecticides against the malaria mosquito we undertook an investigation of the structure-activity relationship of aryl methylcarbamates inhibitors of acetylcholinesterase (AChE). Compounds bearing a β-branched 2-alkoxy or 2-thioalkyl group were found to possess good selectivity for inhibition
D F K Rawn et al.
Food additives and contaminants, 21(6), 555-563 (2004-06-19)
Infants and young children consume fruit juices and drinks at rates exceeding those of older children and adults. Carbamate pesticides are known to be used on a broad spectrum of crops, including orchard and vine crops such as apples and
Geun-Hye Gang et al.
The plant pathology journal, 31(2), 115-122 (2015-06-11)
Anthracnose, caused by Colletotrichum gloeosporioides (C. gloeosporioides; Teleomorph: Glomerella cingulata), is the most destructive disease that affects sweet persimmon production worldwide. However, the biology, ecology, and genetic variations of C. gloeosporioides remain largely unknown. Therefore, in this study, the development
M A Radwan et al.
Ecotoxicology and environmental safety, 71(3), 889-894 (2007-08-19)
Some monoterpenoids and their corresponding new N-methyl carbamate derivatives were used to study their molluscicidal effect on Biomphalaria alexandrina, the snail-vector of Schistosoma mansoni in Egypt. Improving the efficacy of the tested monoterpenoids and/or their corresponding carbamates by either piperonyl
Frank J Schenck et al.
Journal of AOAC International, 89(1), 196-200 (2006-03-04)
A reversed-phase liquid chromatographic (LC) method is presented for the analysis of N-methyl carbamate pesticide residues and piperonyl butoxide in eggs at levels as low as 2 microg/kg (ppb). The study was undertaken to provide data for dietary exposure estimates
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