Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 8 de 8
Filtrar
Más filtros










Base de datos
Intervalo de año de publicación
1.
Data Brief ; 53: 110234, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38445195

RESUMEN

This article presents data of the effects of fly ash on growth and yield of radish plant under two types of soil (delta clay rich soil and coastal sandy soil). The experiment was conducted under semi-controlled conditions in a greenhouse at the Faculty of Agronomy, Vietnam National University of Agriculture (latitude 21°0'01N, longitude 105° 9'32″ W). The experiment has been conducted with the Randomized Complete Block Design (RCBD), each experimental formula was repeated 5 times. A total of 10 experimental formulas were performed including 100% delta clay rich soil, 95% delta clay rich soil+5% FA, 90% delta clay rich soil+10% FA, 85% delta clay rich soil+15% FA, 80% delta clay rich soil+20% FA, 100% coastal sandy soil, 95% coastal sandy soil+5%FA, 90% coastal sandy soil +10%FA, 85% coastal sandy soil+15%FA, and 80% coastal sandy soil+20%FA. Data on germination rate, plant height, number of leaves, SPAD values, leaf area, shoot fresh and dry weight, storage-root traits, storage-root fresh and dry weight were collected to assess the effects of fly ash on growth and yield of radish plant under delta clay rich soil and coastal sandy soil. This data could help develop a strategy fly ash application for crop cultivation.

2.
J Med Chem ; 62(3): 1180-1202, 2019 02 14.
Artículo en Inglés | MEDLINE | ID: mdl-30570265

RESUMEN

The leishmaniases are diseases that affect millions of people across the world, in particular visceral leishmaniasis (VL) which is fatal unless treated. Current standard of care for VL suffers from multiple issues and there is a limited pipeline of new candidate drugs. As such, there is a clear unmet medical need to identify new treatments. This paper describes the optimization of a phenotypic hit against Leishmania donovani, the major causative organism of VL. The key challenges were to balance solubility and metabolic stability while maintaining potency. Herein, strategies to address these shortcomings and enhance efficacy are discussed, culminating in the discovery of preclinical development candidate GSK3186899/DDD853651 (1) for VL.


Asunto(s)
Leishmaniasis Visceral/tratamiento farmacológico , Morfolinas/uso terapéutico , Pirazoles/uso terapéutico , Pirimidinas/uso terapéutico , Tripanocidas/uso terapéutico , Animales , Femenino , Células Hep G2 , Humanos , Leishmania donovani/efectos de los fármacos , Masculino , Ratones Endogámicos BALB C , Estructura Molecular , Morfolinas/síntesis química , Morfolinas/toxicidad , Pruebas de Sensibilidad Parasitaria , Inhibidores de Proteínas Quinasas/síntesis química , Inhibidores de Proteínas Quinasas/uso terapéutico , Inhibidores de Proteínas Quinasas/toxicidad , Pirazoles/síntesis química , Pirazoles/toxicidad , Pirimidinas/síntesis química , Pirimidinas/toxicidad , Ratas Sprague-Dawley , Relación Estructura-Actividad , Tripanocidas/síntesis química , Tripanocidas/toxicidad
3.
ACS Med Chem Lett ; 7(4): 379-84, 2016 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-27096045

RESUMEN

To identify BCATm inhibitors suitable for in vivo study, Encoded Library Technology (ELT) was used to affinity screen a 117 million member benzimidazole based DNA encoded library, which identified an inhibitor series with both biochemical and cellular activities. Subsequent SAR studies led to the discovery of a highly potent and selective compound, 1-(3-(5-bromothiophene-2-carboxamido)cyclohexyl)-N-methyl-2-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamide (8b) with much improved PK properties. X-ray structure revealed that 8b binds to the active site of BACTm in a unique mode via multiple H-bond and van der Waals interactions. After oral administration, 8b raised mouse blood levels of all three branched chain amino acids as a consequence of BCATm inhibition.

4.
J Med Chem ; 57(19): 8111-31, 2014 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-25249180

RESUMEN

Through their function as epigenetic readers of the histone code, the BET family of bromodomain-containing proteins regulate expression of multiple genes of therapeutic relevance, including those involved in tumor cell growth and inflammation. BET bromodomain inhibitors have profound antiproliferative and anti-inflammatory effects which translate into efficacy in oncology and inflammation models, and the first compounds have now progressed into clinical trials. The exciting biology of the BETs has led to great interest in the discovery of novel inhibitor classes. Here we describe the identification of a novel tetrahydroquinoline series through up-regulation of apolipoprotein A1 and the optimization into potent compounds active in murine models of septic shock and neuroblastoma. At the molecular level, these effects are produced by inhibition of BET bromodomains. X-ray crystallography reveals the interactions explaining the structure-activity relationships of binding. The resulting lead molecule, I-BET726, represents a new, potent, and selective class of tetrahydroquinoline-based BET inhibitors.


Asunto(s)
Aminoquinolinas/síntesis química , Antiinflamatorios/síntesis química , Apolipoproteína A-I/metabolismo , Benzoatos/síntesis química , Proteínas Nucleares/antagonistas & inhibidores , Proteínas Serina-Treonina Quinasas/antagonistas & inhibidores , Quinolinas/síntesis química , Factores de Transcripción/antagonistas & inhibidores , Aminoquinolinas/farmacocinética , Aminoquinolinas/farmacología , Animales , Antiinflamatorios/farmacocinética , Antiinflamatorios/farmacología , Benzoatos/farmacocinética , Benzoatos/farmacología , Proteínas de Ciclo Celular , Descubrimiento de Drogas , Humanos , Ratones , Quinolinas/farmacocinética , Quinolinas/farmacología , Relación Estructura-Actividad
5.
Bioorg Med Chem Lett ; 22(8): 2963-7, 2012 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-22386529
6.
J Med Chem ; 50(4): 685-95, 2007 Feb 22.
Artículo en Inglés | MEDLINE | ID: mdl-17243659

RESUMEN

The peroxisome proliferator activated receptors PPARalpha, PPARgamma, and PPARdelta are ligand-activated transcription factors that play a key role in lipid homeostasis. The fibrates raise circulating levels of high-density lipoprotein cholesterol and lower levels of triglycerides in part through their activity as PPARalpha agonists; however, the low potency and restricted selectivity of the fibrates may limit their efficacy, and it would be desirable to develop more potent and selective PPARalpha agonists. Modification of the selective PPARdelta agonist 1 (GW501516) so as to incorporate the 2-aryl-2-methylpropionic acid group of the fibrates led to a marked shift in potency and selectivity toward PPARalpha agonism. Optimization of the series gave 25a, which shows EC50 = 4 nM on PPARalpha and at least 500-fold selectivity versus PPARdelta and PPARgamma. Compound 25a (GW590735) has been progressed to clinical trials for the treatment of diseases of lipid imbalance.


Asunto(s)
HDL-Colesterol/sangre , PPAR alfa/agonistas , Propionatos/síntesis química , Tiazoles/síntesis química , Animales , Apolipoproteína A-I/genética , VLDL-Colesterol/sangre , Cristalografía por Rayos X , Perros , Dislipidemias/sangre , Dislipidemias/tratamiento farmacológico , Humanos , Ligandos , Ratones , Ratones Endogámicos C57BL , Ratones Transgénicos , Modelos Moleculares , PPAR alfa/química , Propionatos/farmacocinética , Propionatos/farmacología , Estructura Terciaria de Proteína , Ratas , Ratas Wistar , Relación Estructura-Actividad , Tiazoles/farmacocinética , Tiazoles/farmacología , Triglicéridos/sangre
7.
J Med Chem ; 49(7): 2210-21, 2006 Apr 06.
Artículo en Inglés | MEDLINE | ID: mdl-16570917

RESUMEN

Inhibitors of transforming growth factor beta (TGF-beta) type I receptor (ALK5) offer a novel approach for the treatment of fibrotic diseases such as renal, hepatic, and pulmonary fibrosis. The optimization of a novel phenylpyridine pyrazole series (1a) led to the identification of potent, selective, and orally active ALK5 inhibitors. The cellular potency and pharmacokinetics profiles of these derivatives were improved and several compounds presented antifibrotic activity when orally administered to rats in an acute liver model of dimethylnitrosamine- (DMN-) induced expression of collagen IA1 mRNA, a major gene contributing to excessive extra cellular matrix deposit. One of the most potent ALK5 inhibitors identified in this chemical series, compound 13d (GW788388), reduced the expression of collagen IA1 by 80% at a dose of 1 mg/kg twice a day (b.i.d.). This compound significantly reduced the expression of collagen IA1 mRNA when administered orally at 10 mg/kg once a day (u.i.d.) in a model of puromycin aminonucleoside-induced renal fibrosis.


Asunto(s)
Receptores de Activinas Tipo I/antagonistas & inhibidores , Benzamidas/síntesis química , Pirazoles/síntesis química , Receptores de Factores de Crecimiento Transformadores beta/antagonistas & inhibidores , Enfermedad Aguda , Administración Oral , Animales , Benzamidas/farmacocinética , Benzamidas/farmacología , Colágeno Tipo I/antagonistas & inhibidores , Colágeno Tipo I/biosíntesis , Colágeno Tipo I/genética , Cadena alfa 1 del Colágeno Tipo I , Dimetilnitrosamina , Fibrosis , Riñón/efectos de los fármacos , Riñón/metabolismo , Riñón/patología , Cirrosis Hepática/inducido químicamente , Cirrosis Hepática/metabolismo , Masculino , Modelos Moleculares , Proteínas Serina-Treonina Quinasas , Puromicina Aminonucleósido , Pirazoles/farmacocinética , Pirazoles/farmacología , ARN Mensajero/antagonistas & inhibidores , ARN Mensajero/biosíntesis , Ratas , Ratas Sprague-Dawley , Receptor Tipo I de Factor de Crecimiento Transformador beta , Relación Estructura-Actividad
8.
J Med Chem ; 47(18): 4494-506, 2004 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-15317461

RESUMEN

Optimization of the screening hit 1 led to the identification of novel 1,5-naphthyridine aminothiazole and pyrazole derivatives, which are potent and selective inhibitors of the transforming growth factor-beta type I receptor, ALK5. Compounds 15 and 19, which inhibited ALK5 autophosphorylation with IC50 = 6 and 4 nM, respectively, showed potent activities in both binding and cellular assays and exhibited selectivity over p38 mitogen-activated protein kinase. The X-ray crystal structure of 19 in complex with human ALK5 is described, confirming the binding mode proposed from docking studies.


Asunto(s)
Receptores de Activinas Tipo I/antagonistas & inhibidores , Naftiridinas/síntesis química , Naftiridinas/farmacología , Receptores de Factores de Crecimiento Transformadores beta/antagonistas & inhibidores , Sitios de Unión , Cristalografía por Rayos X , Humanos , Concentración 50 Inhibidora , Fosforilación/efectos de los fármacos , Unión Proteica , Proteínas Serina-Treonina Quinasas , Pirazoles/síntesis química , Pirazoles/farmacología , Receptor Tipo I de Factor de Crecimiento Transformador beta , Relación Estructura-Actividad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...