Abstract:
:Gamma-vinyl GABA (vigabatrin; VGB), an irreversible inhibitor of GABA-transaminase, was evaluated for its effect on the contractile responses to PGE(2) or its precursor arachidonic acid (AA) in guinea pig ileum (GPI) and non-pregnant rat uterus. Rationale behind this study was the rise in gamma-aminobutyric acid (GABA) contents in the peripheral organs after treatment with GABAergic agents and extensive interconnections of neuromediators and their interactions.Indomethacin, the standard NSAID, at 6.1x10(-5) and 12.2x10(-5)M concentrations highly significantly (P<0.001) inhibited contractile responses induced by AA (4.3x10(-5)M) in the isolated GPI. Incubation of the GPI segments with VGB at different concentrations (25, 100 and 200mM) failed to inhibit AA-induced contractile responses in the same preparation. In fact, VGB at 25mM significantly (P<0.05) potentiated the contractile effect of AA 4.3x10(-5)M. Incubation of the same tissue with GABA at 13x10(-3) and 26x10(-3)M inhibited responses elicited by AA at 4.3x10(-5)M that was significant (P<0.05) only with low concentration of GABA. Conversely, a higher concentration (64x10(-3)M) of GABA was needed to antagonise PGE(2) (9.4x10(-6)M)-induced contractions in the same tissue. Almost similar results (i.e. inhibition of contractile responses to AA and PGE(2)) were obtained with isolated non-pregnant rat uterus. These findings suggested that GABA had the potential to inhibit prostaglandin (PG) synthesis and/or antagonise PGE(2) responses in isolated GPI and rat uterus. The addition of 35 or 70 micro l of rat aorta incubation medium caused a dose-dependent inhibition of ADP-induced aggregation being 21.5 and 43.5%, respectively, an indication of prostacycline (PGI(2)) contents. Pre-incubation of rat aortic tissues with VGB (96.8mM) significantly (P<0.05) reversed the anti-aggregatory activity of control aortic prostacycline on ADP-induced aggregation. These findings suggested that VGB might inhibit PGI(2) activity through the inhibition of its synthesis.
journal_name
Pharmacol Resjournal_title
Pharmacological researchauthors
Raza M,Al-Shabanah OAdoi
10.1016/s1043-6618(03)00045-8keywords:
subject
Has Abstractpub_date
2003-06-01 00:00:00pages
477-83issue
6eissn
1043-6618issn
1096-1186pii
S1043661803000458journal_volume
47pub_type
杂志文章abstract::Leishmaniases are severe vector-borne diseases affecting humans and animals, caused by Leishmania protozoans. Over one billion people and millions of dogs live in endemic areas for leishmaniases and are at risk of infection. Immune polarization plays a major role in determining the outcome of Leishmania infections: ho...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2020.105288
更新日期:2020-11-01 00:00:00
abstract::Inflammation plays a key role in tumor promotion and development. Indeed, cyclooxygenase-2 (COX-2) expression is strongly associated with different types of cancer. An emerging class of compounds with significant anti-inflammatory properties is the hydrogen sulfide-releasing non-steroidal anti-inflammatory drugs (H2S-...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2016.10.019
更新日期:2016-12-01 00:00:00
abstract::Neuroinflammation plays an important role in the progression of various neurodegenerative diseases. In this study, we investigated the anti-inflammatory effects of lonchocarpine, a natural compound isolated from Abrus precatorius, under in vitro and in vivo neuroinflammatory conditions induced by challenge with lipopo...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2017.02.027
更新日期:2017-05-01 00:00:00
abstract::At the moment, little treatment options are available for Duchenne muscular dystrophy (DMD). The absence of the dystrophin protein leads to a complex cascade of pathogenic events in myofibres, including chronic inflammation and oxidative stress as well as altered metabolism. The attention towards dietary supplements i...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/j.phrs.2020.104917
更新日期:2020-08-01 00:00:00
abstract::The antinociceptive effect of the D(2) antagonist prochlorperazine was examined in the mouse hot-plate and abdominal constriction tests. Prochlorperazine (1-2 mg kg(-1) s.c./i.p.) produced an increase of the pain threshold in the mouse hot-plate test. The antinociception produced by prochlorperazine was prevented by t...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2004.02.005
更新日期:2004-09-01 00:00:00
abstract::Paradoxical sleep deprivation in rats is considered as an experimental animal model of mania endowed with face, construct, and pharmacological validity. We induced paradoxical sleep deprivation by placing rats onto a small platform surrounded by water. This procedure caused the animal to fall in the water at the onset...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2016.11.029
更新日期:2017-03-01 00:00:00
abstract::Diabetic nephropathy (DN) is a common and serious complication of diabetes and causes kidney failure. Ginsenoside Rg5 (Rg5) is an important monomer in the main protopanaxadiol component of black ginseng. Rg5 has exhibited some beneficial biological effects, such as anti-cancer, neuroprotection, and anti-depression, bu...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2020.104746
更新日期:2020-05-01 00:00:00
abstract::We have previously reported that the dopaminergic projection from A10 ventral tegmental neurons to the central amygdala is, in part, responsible for the facilitatory effect of angiotensin II (AII) and its 3-7 fragment [AII(3-7)] on the retrieval of information in memory motivated affectively and also on recognition me...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1006/phrs.1997.0257
更新日期:1997-11-01 00:00:00
abstract::The lack of availability of appropriate medicines for children is an extensive and well known problem. As a consequence off label or unlicensed administration of medicinal products in every day paediatric practice is frequent. A variety of obstacles hinder the development of paediatric indications for drugs primarily ...
journal_title:Pharmacological research
pub_type: 社论,评审
doi:10.1016/j.phrs.2011.01.016
更新日期:2011-09-01 00:00:00
abstract::The herbal formulation Sinpo-Tang (SPT) has long been used for various allergic diseases. We investigated the effect of SPT on the mast cell-mediated anaphylactic reactions in vivo and in vitro murine models. SPT dose dependently inhibited compound 48/80-induced ear swelling response and histamine release. SPT (0.001-...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/s1043661802002037
更新日期:2002-11-01 00:00:00
abstract::The investigation was aimed at investigating whether the dopaminergic projection arriving at the nucleus septi lateralis (NSL) is involved in the facilitatory effect of vasopressin (AVP) on memory retrieval. The bilateral 6-OHDA lesions to the NSL were made in 20 male Wistar rats before testing the intracerebroventric...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1006/phrs.1997.0280
更新日期:1998-02-01 00:00:00
abstract::This survey is a compendium of genotoxicity and carcinogenicity information of analgesics, anti-inflammatory drugs and antipyretics. Data from 120 drugs were collected; 109 of them are still in the market. Of these 120 drugs, 58 (48.3%) do not have retrievable genotoxicity or carcinogenicity data. The remaining 62 (51...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/j.phrs.2009.03.007
更新日期:2009-07-01 00:00:00
abstract::The purpose of the present work was to study the change in morphine metabolic ratio in obese subjects before and after Roux-en-Y Gastric Bypass (RYGB) and to identify clinical and/or biological factors associated with this change. The pharmacokinetics (PK) of oral morphine (30mg), morphine-3-glucuronide (M3G) and morp...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2016.08.031
更新日期:2017-04-01 00:00:00
abstract::Autism-spectrum disorder (ASD) is a neurodevelopmental disorder characterized by persistent deficits in social communication and repetitive patterns of behavior. ASD is, however, often associated with medical comorbidities and gastrointestinal (GI) dysfunction is among the most common. Studies have demonstrated a corr...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/j.phrs.2018.03.020
更新日期:2018-06-01 00:00:00
abstract:UNLABELLED:The purpose of this study was an attempt to extrapolate favorable observations on the effects of magnesium on platelets and haemostasis from animal models to humans. Intravenous magnesium in the treatment of acute myocardial infarction has been tested in several large clinical trials and remains controversia...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1006/phrs.1997.0212
更新日期:1997-07-01 00:00:00
abstract::In the field of kinase inhibitors for applications in cancer research, tubulin is emerging as a targeted cellular protein that can significantly contribute to their activities. However, investigation of kinase inhibitors beyond the kinome is an area often neglected. Herein, we describe the results of pharmacological s...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2018.06.023
更新日期:2018-08-01 00:00:00
abstract::Cytochrome P450-dependent arachidonic acid (AA) metabolism by medullary thick ascending limb of the loop of Henle (mTALH) cells, corneal epithelium and other transporting epithelia, such as those of the intestines, generate metabolites which affect Na(+)-K(+)-ATPase activity, vasomotion and, thereby, organ function. F...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/1043-6618(91)90046-z
更新日期:1991-05-01 00:00:00
abstract::Metastatic melanoma has been described as a highly aggressive cancer with low sensibility to chemotherapeutic agents. New types of drug, such as metal-based drugs (ferrocifens) have emerged and could represent an alternative for melanoma treatment since they show interesting anticancer potential. Furthermore, molecula...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2017.01.031
更新日期:2017-12-01 00:00:00
abstract::Using cultured human keratinocytes, the present study investigates the role of nitric oxide (NO) in the mediation of the antiproliferative effects of ultraviolet light A (UVA). UVA treatment of cells (3-21 J cm (-2)) caused a time- and dose-dependent increase in nitrite formation in a micromolar range. This effect was...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1006/phrs.2001.0939
更新日期:2002-03-01 00:00:00
abstract::The Notch pathway represents a highly conserved signaling network with essential roles in regulation of key cellular processes and functions, many of which are critical for development. Accumulating evidence indicates that it is also essential for fibrosis and thus the pathogenesis of chronic fibroproliferative diseas...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/j.phrs.2016.04.010
更新日期:2016-06-01 00:00:00
abstract::Posttranslational modifications of proteins are important regulatory processes endowing the proteins functional complexity. Over the last decade, numerous studies have shed light on the roles of palmitoylation, one of the most common lipid modifications, in various aspects of neuronal functions. Major players regulati...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/j.phrs.2016.06.008
更新日期:2016-09-01 00:00:00
abstract::Kidney injury is one of the main complications of obstructive jaundice (OJ) and its pathogenesis has not been clarified. As an independent risk factor for OJ associated with significant morbidity and mortality, it can be mainly divided into two types of morphological injury and functional injury. We called these dysfu...
journal_title:Pharmacological research
pub_type: 杂志文章,评审
doi:10.1016/j.phrs.2020.105311
更新日期:2021-01-01 00:00:00
abstract::Availability of highly active antiretroviral therapy has dramatically increased survival rates and substantially modified the course of HIV infection, which has now become a chronic disease both in adults and in children. Treatment strategies in paediatric patients have to face with specific challenges associated with...
journal_title:Pharmacological research
pub_type: 社论,评审
doi:10.1016/j.phrs.2011.01.007
更新日期:2011-07-01 00:00:00
abstract::Selective cyclooxygenase 2 (COX2) inhibitors (COXIBs) are effective anti-inflammatory and analgesic drugs with improved gastrointestinal (GI) safety compared to nonselective nonsteroidal anti-inflammatory drugs known as traditional (tNSAIDs). However, their use is associated with a cardiovascular (CV) hazard (i.e. inc...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2013.09.008
更新日期:2013-12-01 00:00:00
abstract::Quiescent hepatic stellate cell (HSC) activation and subsequent conversion into myofibroblasts is the central event in hepatic fibrosis pathogenesis. Epithelial-mesenchymal transition (EMT), another vital participant in liver fibrosis, has the potential to initiate HSC activation, which promotes abundant myofibroblast...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2017.10.013
更新日期:2018-02-01 00:00:00
abstract::Heparin-binding protein (HBP; CAP37/azurocidin) is secreted from neutrophil leukocytes early during inflammation and plays a central role in early capillary leakage and extravasation of neutrophils. Furthermore, HBP is chemotactic towards monocytes and lymphocytes and protects against stress-induced apoptosis, e.g. in...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1016/j.phrs.2005.01.004
更新日期:2005-06-01 00:00:00
abstract::We aimed to elucidate the role of vitamin D supplementation on adipokines through a systematic review and a meta-analysis of randomized placebo-controlled trials (RCTs). The search included PUBMED, Scopus, Web of Science and Google Scholar through July 1st, 2015. Finally we identified 9 RCTs and 484 participants. Meta...
journal_title:Pharmacological research
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.phrs.2016.03.035
更新日期:2016-05-01 00:00:00
abstract::The available studies have reported the benefits of statins on all-cause and cardiovascular mortality in chronic kidney disease (CKD) patients. However studies in end-stage renal disease patients on dialysis yielded conflicting results. Therefore, we performed a meta-analysis and provide the most reliable trial data t...
journal_title:Pharmacological research
pub_type: 杂志文章,meta分析
doi:10.1016/j.phrs.2013.03.007
更新日期:2013-06-01 00:00:00
abstract::Perfusion of all mammalian heart muscle except hamster with Ca(2+)-free Tyrode and thereafter reperfusion with normal Tyrode causes irreversible damage, the calcium paradox. Our study aims at deciphering the role of creatine kinase, high energy phosphates and Ca(2+)influx in the genesis of myocardial injury in the rat...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1006/phrs.1999.0595
更新日期:2000-03-01 00:00:00
abstract::(+)-3-(3-Hydroxyphenyl)-N-(1-propyl)-piperidine (3-PPP; a sigma receptor ligand), administered at 30 mg kg-1, 30 min before the test, significantly decreased the electroconvulsive threshold in mice, being ineffective in lower doses. 3-PPP (20 mg kg-1) diminished the protective activity of diphenylhydantoin, phenobarbi...
journal_title:Pharmacological research
pub_type: 杂志文章
doi:10.1006/phrs.1999.0548
更新日期:1999-12-01 00:00:00