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60 Publications visible to you, out of a total of 60
[Inhibition effect of soybean isoflavones on the oxidative modification of low-density lipoprotein].

Abstract (Expand)

In order to investigate the effect of soybean isoflavones(SI) on the oxidative modification to low-density lipoprotein(LDL) and to differentiate the effect of SI and alpha-tocopherol, in vitro and in … vivo test were conducted. An in vitro model of LDL oxidative modification induced by copper-ion was established by monitoring the production of thiobarbituric acid-reactive substances (TBARS) and conjugated dienes after SI or alpha-tocopherol was added. The in vivo test was conducted by feeding rats with a high fat diet supplemented with SI and measured the sensitivity of LDL oxidative modification mediated by Cu2+ in vitro. The results revealed that when SI was added into the in vitro LDL oxidation system, the content of TBARS or conjugated dienes in the system was much reduced with a dose-effect relationship, whether lipid oxidation being initiated or not by copper-ion at 37 degrees C. In comparison with SI, only a significant inhibiting effect on lipid oxidation while alpha-tocopherol was added before the initiation of oxidation. High fat diet induced a rising of LDL sensitivity of oxidative stress, and adding SI to the high fat diet could counteract the sensitivity of LDL oxidative modification significantly. It is concluded that SI is a valuable natural antioxidant different from alpha-tocopherol in inhibiting LDL oxidative modification both in vitro and inv vivo.

Authors: X. Yan, J. Gu, C. Sun, D. Liu

Date Published: No date defined

Publication Type: Not specified

I did this

Abstract

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Author: Alan Williams

Date Published: 16th Jan 2019

Publication Type: Not specified

Identification and characterization of the PhhR regulon in Pseudomonas putida

Abstract

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Authors: M. Carmen Herrera, Estrella Duque, José J. Rodríguez-Herva, Ana M. Fernández-Escamilla, Juan L. Ramos

Date Published: 2010

Publication Type: Not specified

Inferring statin-induced gene regulatory relationships in primary human hepatocytes

Abstract (Expand)

MOTIVATION: Statins are the most widely used cholesterol-lowering drugs. The primary target of statins is HMG-CoA reductase, a key enzyme in cholesterol synthesis. However, statins elicit pleitropic … responses including beneficial as well as adverse effects in the liver or other organs. Today, the regulatory mechanisms that cause these pleiotropic effects are not sufficiently understood. RESULTS: In this work, genome-wide RNA expression changes in primary human hepatocytes of six individuals were measured at up to six time points upon atorvastatin treatment. A computational analysis workflow was applied to reconstruct regulatory mechanisms based on these drug-response data and available knowledge about transcription factor (TF) binding specificities and protein-drug interactions. Several previously unknown TFs were predicted to be involved in atorvastatin-responsive gene expression. The novel relationships of nuclear receptors NR2C2 and PPARA on CYP3A4 were successfully validated in wet-lab experiments. AVAILABILITY: Microarray data are available at the Gene Expression Omnibus (GEO) database at www.ncbi.nlm.nih.gov/geo/, under accession number GSE29868. CONTACT: andreas.zell@uni-tuebingen.de; adrian.schroeder@uni-tuebingen.de SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.

Authors: A. Schroder, J. Wollnik, C. Wrzodek, A. Drager, M. Bonin, O. Burk, M. Thomas, W. E. Thasler, U. M. Zanger, A. Zell

Date Published: 14th Jul 2011

Publication Type: Not specified

Inferring statin-induced gene regulatory relationships in primary human hepatocytes

Abstract

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Authors: A. Schroder, J. Wollnik, C. Wrzodek, A. Drager, M. Bonin, O. Burk, M. Thomas, W. E. Thasler, U. M. Zanger, A. Zell

Date Published: 14th Jul 2011

Publication Type: Not specified

Inhibition of the mitochondrial calcium uniporter rescues dopaminergic neurons in pink1 − / − zebrafish

Abstract

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Authors: Smijin Soman, Marcus Keatinge, Mahsa Moein, Marc Da Costa, Heather Mortiboys, Alexander Skupin, Sreedevi Sugunan, Michal Bazala, Jacek Kuznicki, Oliver Bandmann

Date Published: 24th Nov 2016

Publication Type: Journal

Is health-related quality of life associated with upper and lower airway inflammation in asthmatics

Abstract (Expand)

Background. Allergic diseases impair health-related quality of life (HR-QoL). However, the relationship between airway inflammation and HR-QoL in patients with asthma and rhinitis has not been fully … investigated. We explored whether the inflammation of upper and lower airways is associated with HR-QoL. Methods. Twenty-two mild allergic asthmatics with concomitant rhinitis (10 males, 38 +/- 17 years) were recruited. The Rhinasthma was used to identify HR-QoL, and the Asthma Control Test (ACT) was used to assess asthma control. Subjects underwent lung function and exhaled nitric oxide (eNO) test, collection of exhaled breath condensate (EBC), and nasal wash. Results. The Rhinasthma Global Summary score (GS) was 25 +/- 11. No relationships were found between GS and markers of nasal allergic inflammation (% eosinophils: r = 0.34, P = 0.24; ECP: r = 0.06, P = 0.87) or bronchial inflammation (pH of the EBC: r = 0.12, P = 0.44; bronchial NO: r = 0.27, P = 0.22; alveolar NO: r = 0.38, P = 0.10). The mean ACT score was 18. When subjects were divided into controlled (ACT >/= 20) and uncontrolled (ACT < 20), the alveolar NO significantly correlated with GS in uncontrolled asthmatics (r = 0.60, P = 0.04). Conclusions. Upper and lower airways inflammation appears unrelated to HR-QoL associated with respiratory symptoms. These preliminary findings suggest that, in uncontrolled asthma, peripheral airway inflammation could be responsible for impaired HR-QoL.

Authors: N. Scichilone, F. Braido, S. Taormina, E. Pozzecco, A. Paterno, I. Baiardini, V. Casolaro, G. W. Canonica, V. Bellia

Date Published: 31st Aug 2013

Publication Type: Not specified

Is the glycolytic flux in Lactococcus lactis primarily controlled by the redox charge? Kinetics of NAD(+) and NADH pools determined in vivo by 13C NMR

Abstract (Expand)

The involvement of nicotinamide adenine nucleotides (NAD(+), NADH) in the regulation of glycolysis in Lactococcus lactis was investigated by using (13)C and (31)P NMR to monitor in vivo the kinetics … of the pools of NAD(+), NADH, ATP, inorganic phosphate (P(i)), glycolytic intermediates, and end products derived from a pulse of glucose. Nicotinic acid specifically labeled on carbon 5 was synthesized and used in the growth medium as a precursor of pyridine nucleotides to allow for in vivo detection of (13)C-labeled NAD(+) and NADH. The capacity of L. lactis MG1363 to regenerate NAD(+) was manipulated either by turning on NADH oxidase activity or by knocking out the gene encoding lactate dehydrogenase (LDH). An LDH(-) deficient strain was constructed by double crossover. Upon supply of glucose, NAD(+) was constant and maximal (approximately 5 mm) in the parent strain (MG1363) but decreased abruptly in the LDH(-) strain both under aerobic and anaerobic conditions. NADH in MG1363 was always below the detection limit as long as glucose was available. The rate of glucose consumption under anaerobic conditions was 7-fold lower in the LDH(-) strain and NADH reached high levels (2.5 mm), reflecting severe limitation in regenerating NAD(+). However, under aerobic conditions the glycolytic flux was nearly as high as in MG1363 despite the accumulation of NADH up to 1.5 mm. Glyceraldehyde-3-phosphate dehydrogenase was able to support a high flux even in the presence of NADH concentrations much higher than those of the parent strain. We interpret the data as showing that the glycolytic flux in wild type L. lactis is not primarily controlled at the level of glyceraldehyde-3-phosphate dehydrogenase by NADH. The ATP/ADP/P(i) content could play an important role.

Authors: Ana Rute Neves, Rita Ventura, Nahla Mansour, Claire Shearman, Michael J Gasson, Christopher Maycock, Ana Ramos, Helena Santos

Date Published: 13th May 2002

Publication Type: Not specified

Issue Cover (September 2017)

Abstract

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Editor:

Date Published: 1st Sep 2017

Publication Type: Journal

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