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Showing 1-30 of 42 results for "48670" within Papers
R Sferra et al.
European review for medical and pharmacological sciences, 16(11), 1484-1498 (2012-11-01)
Hepatic fibrosis is characterised by a progressive accumulation of fibrillar extracellular matrix (ECM) proteins, including collagen that occurs in chronic liver diseases. Transforming growth factor-beta1 (TGF-beta)/Smad3 signalling plays a major role in tissue fibrogenesis acting as a potent stimulus of
N-nitrosodimethylamine.
IARC monographs on the evaluation of the carcinogenic risk of chemicals to man, 17, 125-175 (1978-05-01)
Tiffany H Seyler et al.
Journal of analytical toxicology, 37(4), 195-202 (2013-03-20)
A sensitive and selective method was developed and validated to detect six volatile nitrosamines (N-nitrosodimethylamine, N-nitrosomethylethylamine, N-nitrosodiethylamine, N-nitrosopiperidine, N-nitrosopyrrolidine and N-nitrosomorpholine) in human urine. This method uses a liquid-liquid extraction cartridge followed by analysis with gas chromatography-tandem mass spectrometry (GC-MS-MS)
Ruqiao Shen et al.
Water research, 47(2), 802-810 (2012-11-28)
N-nitrosodimethylamine (NDMA) is an emerging disinfection by-product (DBP) which can be formed via the chloramination of amine-based precursors. The formation of NDMA is mainly determined by the speciation of chloramines and the precursor amine groups, both of which are highly
Xiaojie Gan et al.
Water research, 47(3), 1344-1352 (2013-01-05)
The objective of this study was to examine the potential of Magnetic Ion Exchange (MIEX(®)) technology for removing nitrogenous disinfection byproduct (N-DBP) precursors while minimizing carbonaceous DBP (C-DBP) precursors in (i) surface waters, and (ii) effluent impacted waters. Samples were
Lactic acid bacteria directly degrade N-nitrosodimethylamine and increase the nitrite-scavenging ability in kimchi
Kim H-S, et al.
Food Control, 71, 101-109 (2017)
Maria José Farré et al.
Environmental science & technology, 46(23), 12904-12912 (2012-11-09)
UV-C radiation is the U.S. EPA recommended technology to remove N-nitrosodimethylamine (NDMA) during drinking and recycled water production. Frequently, H(2)O(2) is added to the treatment to remove other recalcitrant compounds and to prevent NDMA reformation. However, the transformation of NDMA
Li-Jen Su et al.
PloS one, 8(1), e53988-e53988 (2013-01-22)
Graptopetalum paraguayense (GP) is a folk herbal medicine with hepatoprotective effects that is used in Taiwan. The aim of this study was to evaluate the hepatoprotective and antifibrotic effects of GP on experimental hepatic fibrosis in both dimethylnitrosamine (DMN)- and
Jin Woong Kim et al.
Journal of magnetic resonance imaging : JMRI, 53(2), 554-563 (2020-07-03)
Liver fibrosis is characterized by the excessive accumulation of extracellular matrix proteins. Electrical conductivity imaging at low frequency can provide novel contrast because the contrast mechanisms originate from the changes in the concentration and mobility of ions in the extracellular
Man-Chun Huang et al.
Food chemistry, 138(1), 227-233 (2012-12-26)
A sensitive procedure, microwave-assisted extraction (MAE) coupled dispersive micro solid-phase extraction (D-μ-SPE), was developed to extract N-nitrosodimethylamine (NDMA) and other six volatile N-nitrosamines (NAms) from meat products. Parameters affecting the efficiency of MAE and D-μ-SPE were systematically investigated. For MAE
J Jabłoński
Postepy higieny i medycyny doswiadczalnej, 55(2), 317-337 (2001-07-27)
In this paper we have presented data on an environmental exposure to N-nitrosodimethylamine (NDMA) and factors which favour endogenous biosynthesis of this compound. The factors influencing metabolism and toxicity as well as health effect of exposure have been reported.
Hong Xu et al.
Laboratory investigation; a journal of technical methods and pathology, 92(12), 1738-1748 (2012-09-19)
The contraction of hepatic stellate cells (HSCs) has a critical role in the regulation of intrahepatic vascular resistance and portal hypertension. Previous studies have confirmed that salvianolic acid B (Sal B) is effective against liver fibrosis. In the present study
Wioletta Ratajczak-Wrona et al.
Indian journal of experimental biology, 51(1), 73-80 (2013-02-28)
Potential role of ERK1/2 kinase in conjunction with p38 in the regulation of inducible nitric oxide synthase (iNOS) expression and nitric oxide (NO) production, and superoxide anion generation by human neutrophils (PMNs) exposed to N-nitrosodimethylamine (NDMA) was determined. Increased synthesis
Meric Selbes et al.
Water research, 47(2), 945-953 (2012-12-15)
N-nitrosodimethylamine (NDMA), a probable human carcinogen, is a disinfection by-product that has been detected in chloraminated and chlorinated drinking waters and wastewaters. Formation mechanisms and precursors of NDMA are still not well understood. The main objectives of this study were
Kenjiro Tatematsu et al.
Mutagenesis, 28(2), 161-169 (2013-01-18)
Alcohol consumption is frequently associated with various cancers and the enhancement of the metabolic activation of carcinogens has been proposed as a mechanism underlying this relationship. The ethanol-induced enhancement of N-nitrosodiethylamine (DEN)-mediated carcinogenesis can be attributed to an increase in
David J Feith et al.
Carcinogenesis, 34(3), 570-576 (2012-12-12)
Upper aerodigestive tract (UADT) cancers of the oral cavity and esophagus are a significant global health burden, and there is an urgent need to develop relevant animal models to identify chemopreventive and therapeutic strategies to combat these diseases. Antizyme (AZ)
Yu Peng et al.
European journal of clinical investigation, 43(4), 358-368 (2013-02-27)
Fluorofenidone (AKF-PD) is a novel pyridone agent. The purpose of this study is to investigate the inhibitory effects of AKF-PD on dimethylnitrosamine (DMN)-induced liver fibrosis in rats and the involved molecular mechanism related to hepatic stellate cells (HSCs). Wistar rats
Naveed A Chikan et al.
Asian Pacific journal of cancer prevention : APJCP, 13(3), 1077-1079 (2012-05-29)
The Kashmiri population is culturally distinct with special dietary features owing to the temperate climatic conditions of Kashmir valley. This has habituated the population to preserve food in smoked, pickled and sundried forms which include considerable amounts of N-nitroso compounds
Ming-Fen Lee et al.
Food chemistry, 138(2-3), 802-807 (2013-02-16)
Pterostilbene, found in grapes and berries, exhibits pleiotropic effects, including anti-inflammatory, antioxidant, and anti-proliferative activities. This study was conducted to investigate the effect of pterostilbene on liver fibrosis and the potential underlying mechanism for such effect. Sprague-Dawley rats were intraperitoneally
Ling Li et al.
Journal of food science, 77(5), C560-C565 (2012-11-21)
N-nitrosamines, biogenic amines, and residual nitrites are harmful substances and are often present in cured meats. The effects of different cooking methods (boiling, pan-frying, deep-frying, and microwave) were investigated on their contents in dry-cured sausage. The various N-nitrosamines were isolated
Jing-Hua Peng et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 38(3), 391-396 (2013-05-15)
To observe the pharmacological effect of Cordyceps polysaccharide on dimethylnitrosamine (DMN)-induced liver fibrosis in rats. DMN rat liver fibrosis model was established and divided into the normal group (N, n = 6), the model group (M, n = 11), the
The role of Cu (II) in the reduction of N-nitrosodimethylamine with iron and zinc
Han Y, et al.
Chemosphere, 167, 171-177 (2017)
Ruqiao Shen et al.
Water research, 47(7), 2446-2457 (2013-03-05)
The presence of N-nitrosodimethylamine (NDMA) in drinking water is most commonly associated with the chloramination of amine-based precursors. One option to control the NDMA formation is to remove the precursors via pre-oxidation, and prechlorination is among the most effective options
Todd S Webster et al.
Water research, 47(2), 811-820 (2012-12-05)
N-nitrosodimethylamine (NDMA) is a suspected human carcinogen that has traditionally been treated in water using ultraviolet irradiation (UV). The objective of this research was to examine the application of a laboratory-scale fluidized bed reactor (FBR) as an alternative technology for
Ina Kristiana et al.
Water research, 47(2), 535-546 (2012-11-21)
N-Nitrosamines are a class of disinfection by-products (DBPs) that have been reported to be more toxic than the most commonly detected and regulated DBPs. Only a few studies investigating the formation of N-nitrosamines from disinfection of natural waters have been
Mohamed Siddiqui et al.
Water environment research : a research publication of the Water Environment Federation, 76(4), 316-326 (2004-10-29)
This paper will provide wastewater treatment utility professionals with a comprehensive synthesis of information pertinent to N-nitrosodimethylamine (NDMA) so that plant operators can make informed and cost-effective decisions regarding appropriate management techniques. A suspect disinfection byproduct, NDMA is a potential
A E Pegg
IARC scientific publications, (27)(27), 3-22 (1980-01-01)
NDMA and NDEA are metabolized by a microsomal enzyme system that requires NADPH and oxygen. This metabolism leads to an unstable product which decomposes to yield a reactive alkylating species. This species is too reactive chemically to influence significantly organs
Rucksak Rucksaken et al.
Cancer biomarkers : section A of Disease markers, 12(2), 81-95 (2013-02-12)
Proteomic analysis was performed to search for the diagnostic biomarkers of the early stage of cholangiocarcinoma (CCA). For this purpose, CCA was experimentally induced in hamsters by the combination of N-nitrosodimethylamine (NDMA) treatment and Opisthorchis viverrini (OV) infection. Pooled plasma
Xiaorong Chen et al.
BMC complementary and alternative medicine, 12, 254-254 (2012-12-15)
Macrophages in other organs (e.g. kidneys, lungs, and spleen, et. al) have rarely been reported in the development of liver fibrosis. Therefore, it is important to investigate macrophage activation in the main organs in liver fibrosis. We investigated the potential
Wang Qi et al.
Journal of water and health, 12(4), 736-746 (2014-12-05)
The presence of organic compounds in water sources is one of the concerns in water treatment. They are potential precursors of disinfection byproducts (DBPs) and thus induce health problems in humans. Among the emerging DBPs, carcinogenic compound N-nitrosodimethylamine (NDMA) has
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