Abstract:
:Non-selective NSAIDs enhance the risk of serious ulcer complications (bleeding, perforation, obstruction), hospitalization and death about 3-10-fold. The gastrointestinal side effects of NSAIDs have a considerable economical burden, since they are responsible for 5-10 billion dollars in hospitalization charges and lost work time. NSAIDs cause gastrointestinal damage by both topical and systemic effects. COX-1-mediated inhibition of prostaglandin synthesis is probably the most relevant mechanism, but NSAIDs can cause gastrointestinal injury also by COX-independent pathways. COX-2-selective inhibitors (Coxibs) such as celecoxib, rofecoxib or valdecoxib have been developed to achieve an equal relief of pain and inflammation as classical NSAIDs but without their risk of gastrointestinal side effects. Within the first three months, celecoxib became the fastest selling drug in history. The gastrointestinal safety of classical NSAIDs and Coxibs has been compared in a variety of endoscopic investigations, meta-analyses and outcome studies. In conclusion, these studies have clearly shown, that Coxibs are associated with significantly less dyspeptic symptoms, erosions, ulcers and ulcer complications. In contrast, Coxibs seem to delay gastric ulcer healing to the same extent as traditional NSAIDs. Besides their effects on the upper gastrointestinal tract, NSAIDs can cause small intestinal inflammation, ulcers of the small and large intestine, ileal dysfunction, intestinal strictures, colitis and NSAID enteropathy. In addition, NSAIDs increase the risk of lower gastrointestinal complications including bleeding, perforation and obstruction. Current data suggest, that Coxibs are associated with a significantly lower risk of serious lower GI events than traditional NSAIDs. It is now under debate, who should receive COX-2-selective inhibitors instead of classical NSAIDs, since Coxibs are much more expensive. Data from cost-effectiveness studies suggest, that Coxibs should currently be used only in patients with high risks of GI complications.
journal_name
Curr Top Med Chemjournal_title
Current topics in medicinal chemistryauthors
Lehmann FS,Beglinger Cdoi
10.2174/1568026054201703keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
449-64issue
5eissn
1568-0266issn
1873-4294journal_volume
5pub_type
杂志文章,评审abstract::Compared with the increasing and widespread bacterial resistance to clinical medicines and the urgent need for cures of intractable diseases, there is a dramatic decline in the numbers of drugs reaching the market or clinical trials. Accordingly, it has become imperative to discover more rational and efficient strateg...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
doi:10.2174/1568026615666150825142002
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abstract::Four compounds (isoquercitrin, myricetin-3-O-glucoside, catechin and gallocatechin) were isolated from lyophilized aqueous extract of Schizolobium parahyba leaves by chromatography on Sephadex LH-20, followed by semipreparative HPLC using a C-18 column, and identified by 1H and 13C NMR. The compounds were then, tested...
journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
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abstract::Millions of deaths each year are attributed to malaria worldwide. Transmitted through the bite of an Anopheles mosquito, infection and subsequent death from the Plasmodium species, most notably P. falciparum, can readily spread through a susceptible population. A malaria vaccine does not exist and resistance to virtua...
journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
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abstract::Results of various projects on Mexican Indian ethnobotany and some of the subsequent pharmacological and phytochemical studies are summarised focusing both on chemical-pharmacological as well as anthropological (ethnopharmacological) aspects of our research. We have identified taste and smell properties of medicinal (...
journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章
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更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Nowadays, malaria is still one of the most important and lethal diseases worldwide, causing 445,000 deaths in a year. Due to the actual treatment resistance, there is an emergency to find new drugs. OBJECTIVE:The aim of this work was to find potential inhibitors of phosphoglycerate mutase 1 from P. falcipar...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
doi:10.2174/1568026618666181029144653
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:The high sequence and structural homology among the hsp90 paralogs - Hsp90α, Hsp90β, Grp94, and Trap-1 - has made the development of paralog-specific inhibitors a challenging proposition. OBJECTIVE:This review surveys the state of developments in structural analysis, compound screening, and structure-based ...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
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更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Antimicrobial research is being focused to look for more effective therapeutics against antibiotic-resistant infections caused by methicillin-resistant Staphylococcus aureus (MRSA). In this direction, antimicrobial peptides (AMP) appear as promising tool. OBJECTIVES:This study evaluated the antimicrobial ac...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章
doi:10.2174/1568026618666181022140348
更新日期:2018-01-01 00:00:00
abstract::In general perturbation methods starts with a known exact solution of a problem and add "small" variation terms in order to approach to a solution for a related problem without known exact solution. Perturbation theory has been widely used in almost all areas of science. Bhor's quantum model, Heisenberg's matrix mecha...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
doi:10.2174/1568026611313140011
更新日期:2013-01-01 00:00:00
abstract:INTRODUCTION:Mosquito borne diseases continue to propagate and cause millions of deaths annually. They are caused either by protozoan parasites such as Plasmodium, Toxoplasma or by flaviviruses including Dengue and Zika. Among the proteome of such parasitic organisms, proteases play essential roles in events such as ho...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
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更新日期:2017-01-01 00:00:00
abstract::The H(3) histamine receptor is expressed in many brain regions, including those involved in sleep/wake regulation and cognitive functions. Inhibition of the H(3) receptor leads to increased release of multiple neurotransmitters in these regions, making this receptor an ideal target for the potential enhancement of aro...
journal_title:Current topics in medicinal chemistry
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更新日期:2010-01-01 00:00:00
abstract::Autophagy is an important basic metabolic mechanism by engulfing and degrading the unnecessary or dysfunctional cellular components within double-membered autolysosomes to maintain cellular homeostasis. Autophagy has sparkled great interest for its complicated functions in different stages of cancer, and is regarded a...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
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更新日期:2015-01-01 00:00:00
abstract::Thermolysin (TLN) and other thermolysin-like zinc metalloproteinases (TLPs),are important virulence factors for pathogenesis of bacterial infections by suppressing the innate immune system of the host. Therapeutic inhibition ofTLPs is believed to be a novel strategy inthe development of a new generation antibiotics.In...
journal_title:Current topics in medicinal chemistry
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更新日期:2012-01-01 00:00:00
abstract::A series of novel derivatives of 1,3-oxazolidin-2-one 12a-12n has been synthesized starting from 4-nitro-(L)- phenylalanine by involving five-step reaction sequence. All the compounds were screened for their in vitro antibacterial activity against four pathogenic bacterial strains namely, Staphylococcus aureus, Bacill...
journal_title:Current topics in medicinal chemistry
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更新日期:2013-08-01 00:00:00
abstract::Over activation of the NMDA receptor complex has been implicated in a number of neurological conditions. The use of NMDA antagonists as therapeutic agents has been limited by serious cognitive and motor side effects. Significant efforts have been reported in the development of NR2B subtype-selective antagonists, which...
journal_title:Current topics in medicinal chemistry
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journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
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更新日期:2011-01-01 00:00:00
abstract::There exists a huge attrition rate of molecules in clinical trials. It was expected that high-throughput screening and combinatorial chemistry would make the task of producing drugs easier. However, the efforts of the past decade have not been an unvarnished success. As a result, a lot of experimental and computationa...
journal_title:Current topics in medicinal chemistry
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更新日期:2002-12-01 00:00:00
abstract::An evaluation of existing and proposed Fe chelators, both synthetic and natural products, for the treatment of Fe-overload disease must address a number of issues. There are fundamental parameters that determine the efficacy of a drug: absorption, distribution, metabolism, clearance and toxicity. However, the administ...
journal_title:Current topics in medicinal chemistry
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更新日期:2011-01-01 00:00:00
abstract::Pulmonary drug delivery represents the best way of treating lung diseases, since it allows direct delivery of the drug to the site of action, with few systemic effects. Meanwhile, the lungs may be used as a portal of entry to the body, allowing systemic delivery of drugs via the airway surfaces into the bloodstream. I...
journal_title:Current topics in medicinal chemistry
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更新日期:2015-01-01 00:00:00
abstract::Variable selection is a procedure used to select the most important features to obtain as much information as possible from a reduced amount of features. The selection stage is crucial. The subsequent design of a quantitative structure-activity relationship (QSAR) model (regression or discriminant) would lead to poor ...
journal_title:Current topics in medicinal chemistry
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更新日期:2008-01-01 00:00:00
abstract::Chagas disease and African sleeping sickness are trypanosomal infections that represent important public health problems in Latin America and Africa, respectively. The restriction of these diseases to the poorer parts of the world has meant that they have been largely neglected and limited progress has been made in th...
journal_title:Current topics in medicinal chemistry
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更新日期:2011-01-01 00:00:00
abstract::In the late 1970s and the early 1980s the initial p38 chemotype, the triaryl imidazoles, was discovered as an off-target effect during the development of cyclooxygenase and 5-lipoxygenase inhibitors long before the identity of the p38 kinase was known. During the last 10 years a number of novel p38 chemotypes were dis...
journal_title:Current topics in medicinal chemistry
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更新日期:2005-01-01 00:00:00
abstract::Fluorine-18 ((18)F, beta(+); 96.7%, T(1/2)=109.8 min) is of considerable importance for developing positron emission tomography (PET) ligands for imaging receptor, enzyme, gene expression etc. in brain, tumor, myocardium and other regions or organs due to its optimal decay characteristics. To synthesize (18)F-labeled ...
journal_title:Current topics in medicinal chemistry
pub_type: 杂志文章,评审
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更新日期:2007-01-01 00:00:00
abstract::This chapter describes the life cycle, general morphology and ultrastructure of the larval and adult stages of Taenia solium, a parasitic flatworm of humans found in underdeveloped countries. Experimental results describing the role of proteins and glycoproteins in the host-parasite relationship, as well as the variou...
journal_title:Current topics in medicinal chemistry
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更新日期:2008-01-01 00:00:00