Abstract:
AIMS:Paraquat (PQ) is known to induce pulmonary injury via a redox cyclic reaction. The present study was aimed to determine the protective effects of quercetin against PQ-induced pulmonary injury in association with its antioxidant activity. MAIN METHODS:Male rats were challenged acutely by PQ (50 mg/kg, i.p.) with or without quercetin post-treatment. Pulmonary heme oxygenase-1 (HO-1) expression, malondialdehyde (MDA) level, and the total oxyradical scavenging capacity (TOSC) toward hydroxyl, peroxyl radicals and peroxynitrite were measured 24 h after PQ treatment. Different groups of rats were instilled with PQ (0.5 mg/kg) directly into the right lung. Quercetin was administered to the rats daily for 14 days after PQ instillation. Serum NO, pulmonary glutathione (GSH) and 4-hydroxyproline (4-HP) concentrations were quantified in conjunction with histopathological examination to determine the fibrotic changes in lung. KEY FINDINGS:Pulmonary MDA level and HO-1 expression were elevated and the TOSC was reduced rapidly by an intraperitoneal dose of PQ. These changes were inhibited by quercetin post-treatment. In rat lungs instilled with PQ 14 days before, NO, MDA and 4-HP were elevated, and GSH was reduced, which were all inhibited significantly by daily quercetin treatment. Histopathological examination also revealed that quercetin ameliorated the increase in fibroblast distribution and collagen deposition in the lungs instilled with PQ. SIGNIFICANCE:The present results demonstrate that quercetin administration to rats effectively inhibits the development of PQ-induced pulmonary injury most probably via its antioxidant activity.
journal_name
Life Scijournal_title
Life sciencesauthors
Park HK,Kim SJ,Kwon DY,Park JH,Kim YCdoi
10.1016/j.lfs.2010.06.011subject
Has Abstractpub_date
2010-07-31 00:00:00pages
181-6issue
5-6eissn
0024-3205issn
1879-0631pii
S0024-3205(10)00263-8journal_volume
87pub_type
杂志文章相关文献
LIFE SCIENCES文献大全abstract::S-adenosylmethionine and adenosine levels in the rat pineal gland were determined by high-performance liquid chromatography after fractionation of the pineal extracts. The concentration of S-adenosylmethionine follows a circadian rhythm and is about three times higher during the day (2.5 nmol/gland) than the night (1....
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(84)90253-4
更新日期:1984-08-06 00:00:00
abstract::The systemic administration of neurotensin (NT) dose-dependently increased plasma adrenocorticotropin (ACTH) concentration in rats, and this effect was annulled by (alpha-helical)-CRH9-41, an antagonist of corticotropin-releasing hormone (CRH). The systemic administration of [D-Trp11]-neurotensin (NT-A), a specific NT...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90250-s
更新日期:1992-01-01 00:00:00
abstract::Adenylate cyclase activity in isolated rat liver plasma membranes was inhibited by NADH in a concentration-dependent manner. Half-maximal inhibition of adenylate cyclase was observed at 120 microM concentration of NADH. The effect of NADH was specific since adenylate cyclase activity was not altered by NAD+, NADP+, NA...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(91)90177-d
更新日期:1991-01-01 00:00:00
abstract:AIMS:Intestinal alkaline phosphatase (IAP) is an intestinal brush border enzyme that is shown to function as a gut mucosal defense factor, but its defensive mechanism remains unclear. The aims of this study were to evaluate the effect of IAP on intestinal epithelial cells and macrophages, and on chronic colitis in inte...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2014.02.003
更新日期:2014-04-01 00:00:00
abstract:AIMS:Prior work suggests that ischemic preconditioning increases the level of CD39 in the heart and contributes to cardiac protection. Therefore, we examined if targeted cardiac expression of CD39 protects against myocardial injury. MAIN METHODS:Mice with cardiac-specific expression of human CD39 (αMHC/hCD39-Tg) were ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2016.10.016
更新日期:2017-06-15 00:00:00
abstract::In the field of estrogen therapy breast cancer risk is one of the most controversially discussed topic. Actually, the as yet largest placebo-controlled study, the Women's Health Initiative, rather showed a risk reduction, in contrast to observational studies. In the present study we have investigated the effect of est...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2005.07.042
更新日期:2006-02-23 00:00:00
abstract::The present study was undertaken to evaluate the cardioprotective potential of Curcuma longa (Turmeric) in the ischemia-reperfusion (I/R) model of myocardial infarction (MI). Wistar rats were divided into three groups and received saline orally (sham, control I/R group) and Curcuma longa 100 mg/kg (CL-100 treated grou...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2004.02.032
更新日期:2004-08-20 00:00:00
abstract::This study analyzed the relationship between infection by human T-cell lymphotropic virus type 1 (HTLV-1) and changes in the pulmonary system. Cohort and case-control study models that analyzed a causal association between HTLV-1 and changes in the pulmonary system were considered. There were no restrictions on langua...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.117979
更新日期:2020-09-01 00:00:00
abstract::The objective of this study was to investigate whether age induces changes on vasodilator response induced by cromakalim, an ATP-sensitive K+ (K(ATP)) channel opener, as well as the underlying mechanism involved in this possible alteration. For this purpose, aortic segments from young (3-5 months) and old (3 years) ra...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(99)80003-4
更新日期:1998-01-01 00:00:00
abstract::The effects of the novel anticonvulsant felbamate, which binds to the 5-7 dichlorokynurenic binding sites, were tested towards the CA1 epileptiform activity induced in rat hippocampal slices by kainic acid. The effects of the kynurenic acid derivatives 7-chlorokynurenic acid and 5-7 dichlorokynurenic acid and of the N...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(96)00251-2
更新日期:1996-05-24 00:00:00
abstract::NSAIDs can elevate blood pressure through mechanisms such as renal vasoconstriction and sodium retention. These effects are particularly evident in hypertensive individuals. Nitric oxide-releasing NSAID derivatives have been shown to have greatly reduced toxicity in the gastrointestinal tract and kidney. We therefore ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/s0024-3205(98)00072-1
更新日期:1998-01-01 00:00:00
abstract::Many authors have documented a high level of expression of class II HLA molecules by decidua. Although macrophages appear to be responsible for this, we show in this article that endothelial cells (EC) of the venules and capillaries of human decidua also strongly express class II molecules, whereas EC of chorionic vil...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(93)90635-g
更新日期:1993-01-01 00:00:00
abstract::The Thirteenth International Conference on Endothelin (ET-13) was held from September 8-11, 2013 in Tokyo, Japan chaired by Noriaki Emoto, Kobe Pharmaceutical University, Japan, and Takashi Miyauchi, University of Tsukuba, Japan and held on the Tokyo Campus of Tsukuba University. The International Conferences on Endot...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2014.09.020
更新日期:2014-11-24 00:00:00
abstract::A 21 amino acid peptide containing the prepropendothelin sequence from amino acids 110 to 130 and two intrachain disulfide bonds was synthesized and tested for biological activity in the following endothelin assays: 1.) a competition binding assay using [125I]ET-1 and dog heart membranes, 2.) three RIA's using 125I-ET...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(90)90308-e
更新日期:1990-01-01 00:00:00
abstract:AIMS:The long non-coding RNA (lncRNA) was reported to be involved in the progress of various cancers, however, its effect in colorectal cancer (CRC) remains unknown. The goal of the present study is to investigate the function role of lncRNA PCAT-1 in colorectal cancer. MAIN METHODS:The expression of lncRNA PCAT-1 in ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2017.08.024
更新日期:2017-11-01 00:00:00
abstract::Three neurodegenerative diseases, Huntington's disease (HD), Kennedy's disease (hereditary spinobulbar muscular atrophy, SBMA), and type 1 spinocerebellar ataxia (SCA-1) have been found to share a common genetic defect: an unstable region of repeated CAG trinucleotides which are thought to be translated into a polyglu...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/0024-3205(94)90012-4
更新日期:1994-01-01 00:00:00
abstract:AIMS:Benidipine, a dihydropyridine Ca(2+) channel blocker, has been reported to block T-type Ca(2+) channels; however, the mechanism underlying this effect was unclear. In this study, we characterized the mechanism responsible for this blocking activity. Furthermore, the blocking activity was compared between two enant...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2011.03.019
更新日期:2011-05-09 00:00:00
abstract::A review of the rapidly accumulating data in the literature continues to support the notion that catecholamines regulate ovarian function, and extends the complexity of catecholaminergic effects on the ovary via interactions with pituitary and adrenal hormones. It is clear that catecholamines affect growth and differe...
journal_title:Life sciences
pub_type: 杂志文章,评审
doi:10.1016/0024-3205(86)90088-3
更新日期:1986-11-10 00:00:00
abstract::The effect of chronic cigarette smoke exposure on the activity of rat trachea and lung ornithine decarboxylase (ODC) and s-adenosyl-methionine decarboxylase (AdoMet-DC) was determined. Male rats were exposed once daily for 10 min to mainstream (MS) or different sidestream (SS) dilutions of fresh Kentucky 2R1 cigarette...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(85)90567-3
更新日期:1985-12-09 00:00:00
abstract::To investigate the difference of metabolic pharmacokinetics between pure glycyrrhizin (GZ) and GZ in licorice decoction, six New Zealand White rabbits were orally given pure GZ and licorice decoction containing equivalent content of GZ in a randomized crossover design. HPLC methods were used for the quantitation of GZ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2004.10.020
更新日期:2005-01-21 00:00:00
abstract::The effect of orchiectomy on peripheral benzodiazepine receptors (PBZr) in the rabbit prostate was studied. The mean PBZr density in the mitochondrial fraction isolated from prostates of intact (non castrated) rabbits was 4066 fmol/mg protein which following castration increased to 7236 fmol/mg protein (p less than 0....
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(92)90358-v
更新日期:1992-01-01 00:00:00
abstract::It has been reported that while bacteria and higher plants possess two different pathways for the biosynthesis of putrescine, via ornithine decarboxylase (ODC) and arginine decarboxylase (ADC); the fungi, like animals, only use the former pathway. We found that contrary to the earlier reports, two of the phytopathogen...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(89)90317-2
更新日期:1989-01-01 00:00:00
abstract:AIMS:We recently reported that acute exposure to nicotine vasodilates the renal vasculature of male rats via facilitation of endothelial nitric oxide synthase (eNOS). In this study, we investigated whether this effect of nicotine is sexually dimorphic and the role of estrogen in modulating the nicotine effect. MAIN ME...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2010.11.009
更新日期:2011-01-17 00:00:00
abstract:AIMS:Oxidative stress emerges after reperfusion of an organ following an ischemic period and results in tissue damage. In the heart, an amplified generation of reactive oxygen species and a significant Ca(2+) accumulation cause ventricular arrhythmias and mitochondrial dysfunction. This occurs in consequence of increas...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2013.12.026
更新日期:2014-02-06 00:00:00
abstract::We explored the mechanism whereby maltitol causes an increase of calcium absorption in the lower small intestine using everted ileal segments of rats. Under the calcium concentrations tested (1-20mM), which enabled us to assess the diffusional calcium transfer, maltitol in the mucosal-side medium (100mM) caused a 155%...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(96)00430-4
更新日期:1996-01-01 00:00:00
abstract:AIMS:Endothelin-1 (ET-1) and endothelin-2 (ET-2; Trp(6)Leu(7)ET-1) are expressed by different cell types, but are considered to display identical pharmacological properties on endothelin receptors. We studied agonist-dependent aspects of endothelin(A) (ET(A))-receptor function and the importance of amino acids 6 and 7 ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2012.02.011
更新日期:2012-10-15 00:00:00
abstract:AIMS:Previous investigations demonstrated that tramadol, as a painkiller, similar to morphine induces tolerance and dependence. Furthermore, the cannabinoid receptor 1 (CB1R) located in the nucleus accumbens (NAc) plays a critical role in morphine-induced conditioning. Therefore, the main objective of this study was to...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2020.118430
更新日期:2020-11-01 00:00:00
abstract::Peptides derived from tryptic hydrolysate of jumbo squid (Dosidicus gigas) skin gelatin were assessed for their antioxidant properties in different in vitro assay systems. The hydrolysate itself exhibited a strong lipid peroxidation inhibition and it was much higher than that of natural antioxidant, alpha-tocopherol. ...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/j.lfs.2005.03.016
更新日期:2005-09-09 00:00:00
abstract::Male Sprague-Dawley rats were given a single electroconvulsive shock (ECS) on alternate days and sacrificed 48 hrs after 1, 3, or 5 seizures. The content of TRH in hippocampus, pyriform cortex and amygdala was increased 2.5-fold, 5.4-fold and 4.3-fold respectively, 48 hrs. after 3 alternate-day electroconvulsive shock...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(85)90116-x
更新日期:1985-01-28 00:00:00
abstract::Recent findings indicate that low concentrations of dopamine (DA) stimulate the secretion of prolactin (PRL) in vitro. In this study, we found that low concentrations of the highly-specific DA D2 receptor agonist, quinpirole hydrochloride (LY) stimulate PRL secretion in female rats, assessed by reverse hemolytic plaqu...
journal_title:Life sciences
pub_type: 杂志文章
doi:10.1016/0024-3205(93)90749-s
更新日期:1993-01-01 00:00:00