نتایج جستجو برای: acetaldehyde

تعداد نتایج: 6496  

2006
R E BARRY J D MCGIVAN

Acetaldehyde may be the injurious agent in acute alcoholic liver disease. It has been suggested that the mechanism of liver injury in this situation may be immunologically mediated. In the present study acetaldehyde has been bound to human liver plasma membranes. The activation of C3 by the acetaldehyde/membrane product was measured by immunofixation of the separated C3 components. Activation o...

In this research, we reported a novel modified carbon ceramic electrode (CCE) using Ni/Al Layered double hydroxide as modifier was fabricated by sol-gel technique. The Ni/Al Layered double hydroxide modified sol gel derived carbon ceramic (Ni/Al LDH-SGD-CC) electrode was used for electrocatalytic oxidation of acetaldehyde. The oxidation of acetaldehyde happens at the potential where Ni (III) sp...

Journal: :iranian chemical communication 2015
ghasem karim-nezhad ali pashazadeh

in this research, we reported a novel modified carbon ceramic electrode (cce) using ni/al layered double hydroxide as modifier was fabricated by sol-gel technique. the ni/al layered double hydroxide modified sol gel derived carbon ceramic (ni/al ldh-sgd-cc) electrode was used for electrocatalytic oxidation of acetaldehyde. the oxidation of acetaldehyde happens at the potential where ni (iii) sp...

Journal: :The Journal of biological chemistry 1974
R Parrilla K Okawa K O Lindros U J Zimmerman K Kobayashi J R Williamson

Perfused rat liver and suspensions of isolated rat liver cells have been used to study the influence of the transaminase inhibitors aminooxyacetate and DL-cycloserine on the rate of acetaldehyde utilization, and the effects of acetaldehyde on the state of reduction of cytosolic and mitochondrial pyridine nucleotides. In the presence of 4-methylpyrazole to inhibit acetaldehyde reduction to ethan...

Journal: :journal of food biosciences and technology 0

abstract: kefir is fermented milk that has a unique flavor because of acetaldehyde, diacetyl, acetoin and ethanol. the aim of this study was to evaluate flavor and aroma compounds present in kefir. two types of starter (christian hansen and sacco) and three levels of temperatures (30, 33 and 35oc) were used for the preparation of kefir samples. the samples were analyzed for acetaldehyde, diacet...

2006
VILLE SALASPURO Ville Salaspuro

.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . 8 INTRODUCTION ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 10 REVIEW OF THE LITERATURE ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .. 12 1 Epidemiology of upper digestive tract cancers ... .... ......

Journal: :The Journal of toxicological sciences 2005
Toyohi Isse Tsunehiro Oyama Koji Matsuno Iwao Uchiyama Toshihiro Kawamoto

Aldehyde dehydrogenase 2 (ALDH2) is an important enzyme that oxidizes acetaldehyde. Approximately 45% of Chinese and Japanese individuals are inactive ALDH2 phenotype; acute acetaldehyde toxicity has not been evaluated in these populations. We compared the acute acetaldehyde toxicity between wild-type (Aldh2+/+) and Aldh2-inactive transgenic (Aldh2-/-) mice who were administered an intraperiton...

Journal: :American journal of physiology. Gastrointestinal and liver physiology 2012
Mitzi Dunagan Kamaljit Chaudhry Geetha Samak R K Rao

Acetaldehyde is accumulated at high concentrations in the colonic lumen following ethanol administration. Previous studies demonstrated that acetaldehyde disrupts intestinal epithelial tight junctions and increases paracellular permeability. In the present study, we investigated the role of PP2A in the acetaldehyde-induced disruption of intestinal epithelial tight junctions. Caco-2 cell monolay...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2015
Taichi Yamazaki Takuro Watanabe Satoe Nakamura Kenji Kato

Acetaldehyde is regulated as a toxic substance in various fields, and the method for monitoring or analysis of acetaldehyde is important. However, handling is difficult because of the high reactivity and low boiling point of acetaldehyde. Therefore, a reference material for high purity acetaldehyde with high accuracy was not available. Although the measuring method of acetaldehyde as a reagent ...

Journal: :The Journal of biological chemistry 1976
Y Hasumura R Teschke C S Lieber

Rat liver mitochondria oxidized acetaldehyde (180 muM) at the rate of approximately 12 nmol/min/mg of protein at 37 degrees. This was stimulated by 88% with the addition of ADP. The ADP/O ratio (2.6) was similar to that with glutamate as substrate. 2,4-Dinitrophenol and phenazine methosulfate also stimulated the rate of acetaldehyde oxidation in the mitochondria. By contrast, acetaldehyde metab...

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