Results 11 to 20 of about 12,165 (156)

Characterization of T-Cell Responses to SMX and SMX-NO in Co-Trimoxazole Hypersensitivity Patients Expressing HLA-B*13:01

open access: yesFrontiers in Immunology, 2021
HLA-B*13:01-positive patients in Thailand can develop frequent co-trimoxazole hypersensitivity reactions. This study aimed to characterize drug-specific T cells from three co-trimoxazole hypersensitive patients presenting with either Stevens-Johnson ...
Jirawat Pratoomwun   +14 more
doaj   +1 more source

Kinetic study on the reaction of sodium nitrite with neurotransmitters secreted in the stomach

open access: yesScientific Reports, 2023
Nitroso-compounds are potentially mutagenic and carcinogenic compounds due to their ability to alkylate DNA bases. One of the most common sources of human exposure to nitroso-compounds is their formation in the acidic environment of the stomach by the ...
Mario González-Jiménez   +6 more
doaj   +1 more source

SUBSTITUTED 4-NITROSOPYRAZOLES IN THE DIELS-ALDER REACTION

open access: yesSiberian Journal of Life Sciences and Agriculture, 2021
Background. 4-Nitrosopyrazoles have become widespread in the pharmaceutical industry and in chemistry due to their high reactivity and biological activity. However, the interaction of 3,5-substituted 4-nitroso-1H-pyrazoles with diene hydrocarbons has not
Darya S. Volkova   +4 more
doaj   +1 more source

Carcinogenic effects of N-nitroso compounds in the environment

open access: yesEnvironment Conservation Journal, 2020
N-nitroso compounds (NOC) are produced by the acid catalyzed reaction of nitrite with certain nitrogen compounds. The gastrointestinal tract (GI) is the main site for the formation of reactive nitrogen species (RNS).
Divya Jain   +3 more
doaj   +1 more source

A new type of convergent paired electrochemical synthesis of sulfonamides under green and catalyst-free conditions

open access: yesScientific Reports, 2023
Our main goal in this work is to synthesize valuable sulfonamide compounds according to the principles of green chemistry and also to present a unique convergent paired mechanism for their synthesis.
Pouria Patoghi   +2 more
doaj   +1 more source

Correlation of precancerous lesion incidence with duodenogastric reflux and N-nitroso compound duration at reflux and antireflux stomach surgery: An experimental study [PDF]

open access: yesVojnosanitetski Pregled, 2018
Background/Aim. Duodenogastric reflux occurs after gastroenteroanastomosis, with or without resection of the stomach (Billroth I, Billroth II), after vagotomy and pyloroplasty, gastroduodenostomy as well as in conservatively treated patients.
Zlatić Aleksandar   +7 more
doaj   +1 more source

Investigation of Escherichia coli O157:H7 Survival and Interaction with Meal Components during Gastrointestinal Digestion

open access: yesFoods, 2021
Escherichia coli O157:H7 is responsible for foodborne poisoning, incriminating contaminated animal food and especially beef meat. This species can survive in the digestive tract, but, up to now, very few studies have considered its survival during the ...
Diane de La Pomelie   +5 more
doaj   +1 more source

Aromatic C-Nitroso Compounds and Their Dimers: A Model for Probing the Reaction Mechanisms in Crystalline Molecular Solids

open access: yesCrystals, 2017
This review is focused on the dimerization and dissociation of aromatic C-nitroso compounds and their dimers, the reactions that could be used as a convenient model for studying the thermal organic solid-state reaction mechanisms. This molecular model is
Ivana Biljan, Hrvoj Vančik
doaj   +1 more source

[3+3]-Annulation of Cyclic Nitronates with Vinyl Diazoacetates: Diastereoselective Synthesis of Partially Saturated [1,2]Oxazino[2,3-b][1,2]oxazines and Their Base-Promoted Ring Contraction to Pyrrolo[1,2-b][1,2]oxazine Derivatives

open access: yesMolecules, 2023
A rhodium(II)-catalyzed reaction of cyclic nitronates (5,6-dihydro-4H-1,2-oxazine N-oxides) with vinyl diazoacetates proceeds as a [3+3]-annulation producing bicyclic unsaturated nitroso acetals (4a,5,6,7-tetrahydro-2H-[1,2]oxazino[2,3-b][1,2]oxazines ...
Yulia A. Antonova   +3 more
doaj   +1 more source

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