Protective effect of schizolobium parahyba flavonoids against snake venoms and isolated toxins.

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 against hemorrhagic and fibrinogenolytic activities of Bothrops crude venoms and isolated metalloproteinases. The inhibitors neutralized the biological and enzymatic activities of Bothrops venoms and toxins isolated from B. jararacussu and B. neuwiedi venoms. The results showed that gallocatechin and myricetin-3-O-glucoside are good inhibitors of hemorrhagic and fibrinogenolytic activities of metalloproteinases, respectively. Gallocatechin also inhibited the myotoxic activity of both B. alternatus venom and BnSP-6 (Lys49 PhospholipaseA2 from B. neuwiedi). Circular dichroism and docking simulation studies were performed in order to investigate the possible interaction between BnSP-6 and gallocatechin. This is the first time these compounds and their anti-ophidian properties are reported for S. parahyba species. Forthcoming studies involving X-ray co-crystallization, will be of great importance for the development of new therapeutic agents for the treatment of ophidian accidents and for the better understanding of the structure/function relationship of venom toxins.

journal_name

Curr Top Med Chem

authors

F Vale LH,Mendes MM,Fernandes RS,Costa TR,S Hage-Melim LI,A Sousa M,Hamaguchi A,Homsi-Brandeburgo MI,Franca SC,Silva CH,Pereira PS,Soares AM,Rodrigues VM

doi

10.2174/156802611797633438

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

2566-77

issue

20

eissn

1568-0266

issn

1873-4294

pii

BSP/CTMC/E-Pub/-000178-11-21

journal_volume

11

pub_type

杂志文章
  • Current Methods Applied to Biomaterials - Characterization Approaches, Safety Assessment and Biological International Standards.

    abstract::Safety and biocompatibility assessment of biomaterials are themes of constant concern as advanced materials enter the market as well as products manufactured by new techniques emerge. Within this context, this review provides an up-to-date approach on current methods for the characterization and safety assessment of b...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026618666180410151518

    authors: Oliveira JPR,Melendez-Ortiz HI,Bucio E,Alves PT,Lima MIS,Goulart LR,Mathor MB,Varca GHC,Lugao AB

    更新日期:2018-01-01 00:00:00

  • [18F]Fluoroalkyl agents: synthesis, reactivity and application for development of PET ligands in molecular imaging.

    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

    doi:10.2174/156802607782507448

    authors: Zhang MR,Suzuki K

    更新日期:2007-01-01 00:00:00

  • The ORL-1 receptor system: are there opportunities for antagonists in pain therapy?

    abstract::Following the cloning of the classical opioid receptors (mu, delta and kappa), the opioid receptor like-1 (ORL-1) was identified as a G-protein coupled receptor (GPCR) with 65% structure homology to the other members of the opioid family. Its endogenous ligand nociception/orphanin FQ (N/OFQ) was discovered shortly the...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802608786264227

    authors: Fioravanti B,Vanderah TW

    更新日期:2008-01-01 00:00:00

  • Paralog Specific Hsp90 Inhibitors - A Brief History and a Bright Future.

    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

    doi:10.2174/1568026616666160413141154

    authors: Gewirth DT

    更新日期:2016-01-01 00:00:00

  • High resolution magic angle spinning NMR applied to the analysis of organic compounds bound to solid supports.

    abstract::In situ structural characterization of organic compounds attached to solid supports can be achieved by high-resolution magic angle spinning NMR (HRMAS NMR), a technique that provides solution-like spectra for resin-bound molecules. This review outlines the principles of the technique, the influence of the solid suppor...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802611793611913

    authors: Espinosa JF

    更新日期:2011-01-01 00:00:00

  • In Silico Assessment of ADME Properties: Advances in Caco-2 Cell Monolayer Permeability Modeling.

    abstract::One of the main goals of in silico Caco-2 cell permeability models is to identify those drug substances with high intestinal absorption in human (HIA). For more than a decade, several in silico Caco-2 models have been made, applying a wide range of modeling techniques; nevertheless, their capacity for intestinal absor...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026619666181130140350

    authors: Pham-The H,Cabrera-Pérez MÁ,Nam NH,Castillo-Garit JA,Rasulev B,Le-Thi-Thu H,Casañola-Martin GM

    更新日期:2018-01-01 00:00:00

  • Molecular biology of nucleoside transporters and their distributions and functions in the brain.

    abstract::Pyrimidine and purine nucleosides and their derivatives have critical functions and pharmacological applications in the brain. Nucleosides and nucleobases are precursors of nucleotides, which serve as the energy-rich currency of intermediary metabolism and as precursors of nucleic acids. Nucleosides (e.g., adenosine) ...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802611795347582

    authors: Parkinson FE,Damaraju VL,Graham K,Yao SY,Baldwin SA,Cass CE,Young JD

    更新日期:2011-01-01 00:00:00

  • CORAL: classification model for predictions of anti-sarcoma activity.

    abstract::A modified version of the CORAL software (http://www.insilico.eu/coral) allows building up the classification model for the case of the Yes/No data on the anti-sarcoma activity of organic compounds. Three random splits into the sub-training, calibration, and test sets of the data for 3017 compounds were examined. The ...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/1568026611212240004

    authors: Toropov AA,Toropova AP,Benfenati E,Gini G,Leszczynska D,Leszczynski J

    更新日期:2012-01-01 00:00:00

  • Can selective ligands for glutamate binding proteins be rationally designed?

    abstract::A major neurotransmitter, L-Glutamate must be stored, transported and received, and these processes are mediated by proteins that bind this simple yet essential amino acid. Detailed evidence continues to emerge on the structure of Glu binding proteins, which includes both receptors and transporters. It appears that re...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802606777057535

    authors: Natale NR,Magnusson KR,Nelson JK

    更新日期:2006-01-01 00:00:00

  • An Updated Review on Betacoronavirus Viral Entry Inhibitors: Learning from Past Discoveries to Advance COVID-19 Drug Discovery.

    abstract::One year after its first outbreak reported in China, coronavirus disease 2019 (COVID-19) pandemic is still sweeping the World causing serious infections and claiming more fatalities. COVID-19 is caused by the novel corona virus SARS-CoV-2, which belongs to the genus Betacoronavirus (β-CoVs) which is of greatest clinic...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/1568026621666210119111409

    authors: Sabbah DA,Hajjo R,Bardaweel SK,Zhong HA

    更新日期:2021-01-18 00:00:00

  • Coagulation factor Xa inhibition: biological background and rationale.

    abstract::Ischemic heart disease and cerebrovascular disease are the leading causes of death in the world. Surprisingly, these diseases are treated by relatively antiquated drugs. However, due to our improved understanding of the underlying pathology of these diseases, and a number of technological advances in tools for drug di...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026013395380

    authors: Leadley RJ Jr

    更新日期:2001-06-01 00:00:00

  • Template dependent human DNA polymerases.

    abstract::The genetic material in humans contains approximately 6 billion base pairs in the nuclear genome and 16,569 base pairs in the mitochondrial genome [1-3]. In some cases the difference between a healthy and a sick individual consists in only one nucleotide. Thus, it is evident that the pristine replication of the genome...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802608786141098

    authors: Brieba LG

    更新日期:2008-01-01 00:00:00

  • Functional poly(ε-caprolactone) based materials: preparation, self-assembly and application in drug delivery.

    abstract::Recent advances in synthesis of functional poly-ε-caprolactone (PCL) and its self-assembly behavior, as well as application in drug delivery have been reviewed. Three strategies including end group functionalization, postpolymerization modification and new monomer preparation have been summarized to show possibilities...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026614666140118222820

    authors: Xiao Y,Yuan M,Zhang J,Yan J,Lang M

    更新日期:2014-01-01 00:00:00

  • The critical distance for the cycloaromatization reactions of enediynes.

    abstract::It has been shown that the enediyne anticancer antibiotics e.g., calicheamicin, neocarzinostatin and others cleave DNA via the putative intermediate 1,4-diradical formed in the Bergmann cyclization and are thus useful for cancer chemotherapy. The pharmacological activity of these drugs is based, in general, on the act...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/156802608783955719

    authors: Capitani JF,Gaffney SM,Castaldo L,Mitra A

    更新日期:2008-01-01 00:00:00

  • N-[3,5-Bis(trifluoromethyl)phenyl]-5-bromo-2-hydroxybenzamide Analogues: Novel Acetyl- and Butyrylcholinesterase Inhibitors.

    abstract:BACKGROUND:Development of acetyl- (AChE) and butyrylcholinesterase (BuChE) inhibitors belongs to viable strategies for the treatment of dementia and other diseases related to decrease in cholinergic neurotransmission. OBJECTIVE:That is why we designed twenty-two analogues of a dual AChEBuChE salicylanilide inhibitor, ...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/1568026620666200819154722

    authors: Krátký M,Jaklová K,Štěpánková Š,Svrčková K,Pflégr V,Vinšová J

    更新日期:2020-01-01 00:00:00

  • NAADP signaling revisited.

    abstract::Nicotinic acid adenine dinucleotide phosphate (NAADP) is the most potent Ca²⁺ mobilizing endogenous compound known to date. Although its Ca²⁺ releasing activity has been demonstrated in many cell types and in response to different extracellular stimuli, several aspects of NAADP signaling are unclear. This overview foc...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/15680266113136660212

    authors: Guse AH,Ernst IM,Fliegert R

    更新日期:2013-01-01 00:00:00

  • Trypanocidal activity of nitroaromatic prodrugs: current treatments and future perspectives.

    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

    pub_type: 杂志文章,评审

    doi:10.2174/156802611796575894

    authors: Wilkinson SR,Bot C,Kelly JM,Hall BS

    更新日期:2011-01-01 00:00:00

  • Aminoquinoline melanin-concentrating hormone 1-receptor (MCH1-R) antagonists.

    abstract::Structure-activity relationships of a 4-aminoquinoline MCH-1R antagonist lead series were explored by synthesis of analogs with modifications at the 2-, 4- and 6-positions of the original HTS hit. Improvements to the original screening lead were made by addition of lipophilic groups at the 2-position and biphenyl, cyc...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802607782194789

    authors: DeVita RJ

    更新日期:2007-01-01 00:00:00

  • Elucidating Treatment of Alzheimer's Disease via Different Receptors.

    abstract::Alzheimer's disease (AD) is an irreversible multifaceted neurodegenerative disorder that gradually degrades neuronal cells. Presently, it is the most common reason for the memory loss and dementia in older individuals. It is patho-physiologically described by extracellular amyloid beta (Aβ) deposition, intracellular n...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026617666170103163715

    authors: Ul Islam B,Khan MS,Jabir NR,Kamal MA,Tabrez S

    更新日期:2017-01-01 00:00:00

  • Can targeted therapy be successful without metronomic scheduling?

    abstract::In medical oncology, targeted therapy has emerged over the last decade, as the most promising strategy to fight cancer. In addition, a more complete understanding of tumor heterogeneity and pharmacology of the more conventional anti-cancer agents has led to development of metronomic chemotherapy (MC) (i.e. a more freq...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802612803531432

    authors: André N,Pasquier E,Kamen B

    更新日期:2012-01-01 00:00:00

  • Enhanced gene delivery and/or efficacy by functional peptide and protein.

    abstract::RNA interference (RNAi) is an attractive phenomenon for practical use that specifically inhibits gene expression and is carried out by small double-stranded RNAs (dsRNAs) including small interfering RNA (siRNA) or short hairpin RNA (shRNA). In addition, RNAi is of great interest for clinical use to cure refractory dis...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802609789630857

    authors: Okuda T,Kawaguchi Y,Okamoto H

    更新日期:2009-01-01 00:00:00

  • Dendrimers as biopharmaceuticals: synthesis and properties.

    abstract::Two general aspects which need to be considered for the successful application of dendrimers for biomedical purposes are their availability at an acceptable cost and their suitability as regards their pharmacodynamic and pharmacokinetic properties. These two aspects are covered in this review. In the first part, synth...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/156802608785849012

    authors: Villalonga-Barber C,Micha-Screttas M,Steele BR,Georgopoulos A,Demetzos C

    更新日期:2008-01-01 00:00:00

  • The Value of Neuroimaging Techniques in the Translation and Transdiagnostic Validation of Psychiatric Diagnoses - Selective Review.

    abstract::Psychiatric diagnosis has long been perceived as more of an art than a science since its foundations lie within the observation, and the self-report of the patients themselves and objective diagnostic biomarkers are lacking. Furthermore, the diagnostic tools in use not only stray away from the conventional medical fra...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026620666200131095328

    authors: Todeva-Radneva A,Paunova R,Kandilarova S,St Stoyanov D

    更新日期:2020-01-01 00:00:00

  • L-Histidinol Dehydrogenase as a New Target for Old Diseases.

    abstract::Bacterial infections constitute an always growing health problem worldwide. The resistance to antibiotics of an increasing number of bacterial pathogens necessitates a permanent search for new molecules with different mechanisms of action. Histidine biosynthesis is an ancient pathway found in bacteria, archaebacteria,...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026616666160413140000

    authors: Monti SM,De Simone G,D'Ambrosio K

    更新日期:2016-01-01 00:00:00

  • Antiproliferative Activity of 8-methoxy Ciprofloxacin-Hydrozone/Acylhydrazone Scaffolds.

    abstract:AIMS:A series of 8-methoxy ciprofloxacin- hydrazone/acylhydrazone hybrids were evaluated for their activity against a panel of cancer cell lines including HepG2 liver cancer cells, MCF-7, doxorubicin- resistant MCF-7 (MCF-7/DOX) breast cancer cells, DU-145 and multidrug-resistant DU145 (MDR DU-145) prostate cancer cell...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/1568026620666200603105644

    authors: Wang LP,Xu Z,Deng GY,Xu SL

    更新日期:2020-01-01 00:00:00

  • Tuberculosis: An Update on Pathophysiology, Molecular Mechanisms of Drug Resistance, Newer Anti-TB Drugs, Treatment Regimens and Host-Di-rected Therapies.

    abstract::The human tuberculosis (TB) is primarily caused by Mycobacterium tuberculosis (Mtb) that inhabits inside and amidst immune cells of the host with adapted physiology to regulate interdependent cellular functions with intact pathogenic potential. The complexity of this disease is attributed to various factors such as th...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/1568026621999201211200447

    authors: Borah P,Deb PK,Venugopala KN,Al-Shar'i NA,Singh V,Deka S,Srivastava A,Tiwari V,Mailavaram RP

    更新日期:2020-12-11 00:00:00

  • Biological Activities of Artemisinin Derivatives Beyond Malaria.

    abstract::Artemisinin is isolated from Artemisia annua L. with peroxide-containing sesquiterpene lactone structure. Because of its unique structural characteristics and promising anticancer, antivirus activities, it has recently received increasing attention. The aim of this review is to summarize recent discoveries of artemisi...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026619666190122144217

    authors: Liu X,Cao J,Huang G,Zhao Q,Shen J

    更新日期:2019-01-01 00:00:00

  • Synthesis and Biological Activity Study of Tanshinone Derivatives: A Literature and Patent Review.

    abstract::Tanshinones are a class of bioactive compounds present in the Chinese herbal medicine Danshen (Salvia miltiorrhiza Bunge), containing among others, abietane diterpene quinone scaffolds. Chemical synthesis and biological activity studies of natural and unnatural tanshinone derivatives have been reviewed in this article...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:10.2174/1568026620666200922115109

    authors: Huang H,Song C,Chang J

    更新日期:2020-01-01 00:00:00

  • Melanocortin receptors, melanotropic peptides and penile erection.

    abstract::Penile erection is a complex physiologic event resulting from the interactions of the nervous system on a highly specialized vascular organ. Activation of central nervous system melanocortinergic (MC) receptors with either endogenous or synthetic melanotropic ligands may initiate and/or facilitate spontaneous penile e...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章

    doi:

    authors: King SH,Mayorov AV,Balse-Srinivasan P,Hruby VJ,Vanderah TW,Wessells H

    更新日期:2007-01-01 00:00:00

  • An overview of naturally occurring histone deacetylase inhibitors.

    abstract::Histone deacetylases (HDACs) have recently emerged as key elements in epigenetic control of gene expression. Due to the implication of HDACs in a variety of diseases ranging from cancer to neurodegenerative disorder, HDAC inhibitors have received increased attention in recent years. Over the last few decades, a myriad...

    journal_title:Current topics in medicinal chemistry

    pub_type: 杂志文章,评审

    doi:10.2174/1568026615666141208105614

    authors: Kim B,Hong J

    更新日期:2015-01-01 00:00:00