Results 31 to 40 of about 18,203 (158)

Comparison of genotoxic impurities in extracted nicotine vs. synthetic nicotine

open access: yesFrontiers in Chemistry
Nicotine is a chiral alkaloid; nitrogen-containing organic compound that occurs naturally. (S)-nicotine is extracted from Tobacco plants and used as the key addictive ingredient in many smoking products. Synthetic nicotine has gained the interest of many
Ayesha Nisathar   +4 more
doaj   +1 more source

A COMPARATIVE STUDY ON THE LEVEL OF N-NITROSAMINES IN VARIOUS CHICKEN MEAT PRODUCTS. [PDF]

open access: yesAssiut Veterinary Medical Journal
The presented study was performed to evaluate the presence of N-nitrosamines in various cooked chicken meat products, including roasted chicken, grilled chicken, fried nuggets, and fried hot wings.
MOHAMMED ELHEITY   +4 more
doaj   +1 more source

Simultaneous determination of nine nitrosamines in fermented vegetables by GC-MS/MS

open access: yesTạp chí Kiểm nghiệm và An toàn thực phẩm
In this study, nine nitrosamines were identified in fermented vegetables by gas chromatography tandem mass spectrometry (GC–MS/MS), using NDMA-d6 as the internal standard and a DB–17MS capillary column (30 m × 0.25 mm × 0.25 µm).
Nguyen Thi Hong Ngoc   +6 more
doaj   +1 more source

Development and Application of Analytical Methods to Quantitate Nitrite in Excipients and Secondary Amines in Metformin API at Trace Levels Using Liquid Chromatography–Tandem Mass Spectrometry

open access: yesChemosensors
Nitrosamine impurities have provoked numerous global medicine recalls due to their possible presence during drug manufacturing or storage. Regarding formulation of nitrosamine impurities, a key risk involves reactions between nitrosating agents (nitrite)
Ilyoung Ahn   +9 more
doaj   +1 more source

Role of chronic E. coli infection in the process of bladder cancer- an experimental study

open access: yesInfectious Agents and Cancer, 2012
Background Bladder cancer is a common malignancy in Egypt. A history of urinary tract infection can be considered as a risk factor for bladder cancer. Escherichia coli (E. coli) infection is responsible for 70% of urinary tract infection.
El-Mosalamy Hala   +3 more
doaj   +1 more source

LMP-1 and Nasopharyngeal Carcinoma (NPC)

open access: yesÇukurova Üniversitesi Tıp Fakültesi Dergisi, 2014
Purpose: This study aims to determine the interaction of LMP-1 with H2O2 , nitrosamine, and nicotine to predict the external factor that affected LMP-1, which activates lytic phase on nasopharyngeal carcinoma (NPC). Materials and Methods: The amino acid
Anggun Indah Budiningrum   +3 more
doaj  

Pollution levels and health risk assessment of nitrosamines in pipeline direct drinking water from primary and secondary schools in Shanghai

open access: yes环境与职业医学
BackgroundNitrosamines (NAms), emerging as disinfection by-products in drinking water, are highly carcinogenic. Given the significant NAms contamination reported in various regions of China, evaluating the contamination levels and health risks of NAms in
Ting WANG   +4 more
doaj   +1 more source

nitrosamines

open access: yes, 2014
Citation: 'nitrosamines' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.N04167 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Oxidative stress predominates apoptosis during experimental hepatocellular carcinoma

open access: yesJournal of Contemporary Medical Sciences, 2017
Objective Hepatocellular carcinoma ranks the third among cancer deaths in the globe. Despite the fact that many strategies for diagnosing liver cancer are possible, many factors, including apoptosis, arise to interfere with cell cycle control.
Nabil M. Abdel-Hamid   +4 more
doaj  

Non-Competitive Inhibition of Xanthine Oxidase by N-Nitrosomorpholine: An In Vitro Study

open access: yesCumhuriyet Science Journal
Nitrosamines can be formed from nitrate. Nitrate is not actually toxic to mammals but can be reduced to nitrite. Nitrite, on the other hand, reacts with amino groups to form the carcinogenic N-nitroso compound.
Deniz Bakır, Serkan Kapancık
doaj   +1 more source

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