Results: 33

Immunostimulatory activity in mammalian cells of 3, 5-dihydroxy-7-methoxyflavanone ((-)-alpinone) isolated from Heliotropium huascoense resinous exudate

The flavonoid 3,5-dihydroxy-7-methoxyflavanone ((-)-alpinone) isolated from sticky resinous exudate of Heliotropium huascoense was evaluated as immunostimulatory in mammalian cells . Preliminary observations had showed that (-)-alpinone had increased the expression levels of pro-inflammatory cytokine tra...

Evaluation of cytotoxic and antitumoral properties of Tessaria absinthioides (Hook & Arn) DC, "pájaro bobo", aqueous extract

Medicina (B.Aires); 77 (4), 2017
Higher plants have provided various natural derived drugs used currently in western medicine. Tessaria absinthioides (Hook. & Arn.) DC, Asteraceae, is a native plant from South-America with reported ethnopharmacological and culinary uses. Despite recent scientific reports about plants properties, there i...

Synthesis and evaluation of arylamidine derivatives for new antimicrobial and cytotoxic activities

An. acad. bras. ciênc; 89 (2), 2017
ABSTRACT A series of arylamidines 3a-j was designed, synthesized and investigated for antimicrobial activity. Structures of the compounds were confirmed by IR, 1H-NMR and 13C-NMR and a 2D spectroscopic study was performed. A preliminary screening of the antimicrobial tests clearly showed that three out o...

Use of GC/MS to identify chemical constituents and cytotoxic activity of the leaves of Phoradendron mucronatum and Phoradendron microphyllum (Viscaceae)

An. acad. bras. ciênc; 89 (2), 2017
ABSTRACT Phoradendron mucronatum and P. microphyllum are plants that found in tropical and subtropical areas, used in traditional medicine and popularly known as mistle-thrush. The aim of this study was to identify the chemical constituents of different leaf extracts from P. mucronatum and P. microphyllu...

Natural Compounds from Mexican Medicinal Plants as Potential Drug Leads for Anti-Tuberculosis Drugs

An. acad. bras. ciênc; 89 (1), 2017
ABSTRACT In Mexican Traditional Medicine 187 plant species are used in the treatment of respiratory conditions that may be associated with tuberculosis. In this contribution, we review the ethnobotany, chemistry and pharmacology of 63 species whose extracts have been assayed for antimycobacterial activit...

Repair of bone defects using adipose-derived stem cells combined with alpha-tricalcium phosphate and gelatin sponge scaffolds in a rat model

J. appl. oral sci; 25 (1), 2017
Abstract Objectives This study aimed to evaluate the potential of adipose-derived stem cells (ASCs) combined with a modified α-tricalcium phosphate (α-TCP) or gelatin sponge (GS) scaffolds for bone healing in a rat model. Material and Methods Bone defects were surgically created in the femu...

TMPYP4 exerted antitumor effects in human cervical cancer cells through activation of p38 mitogen-activated protein kinase

Biol. Res; 50 (), 2017
BACKGROUND: The aim of the present study was to investigate the potential effects of the 5,10,15,20-tetrakis (1-methylpyridinium-4-yl) porphyrin (TMPyP4) on the proliferation and apoptosis of human cervical cancer cells and the underlying mechanisms by which TMPyP4 exerted its actions. RESULTS: After hum...

Actividad antibacteriana in vitro de Curcuma longa (Zingiberaceae) frente a bacterias nosocomiales en Montería, Colombia

Rev. biol. trop; 64 (3), 2016
ResumenLa resistencia bacteriana es un problema de salud creciente a nivel mundial que genera graves impactos económicos y sociales, comprometiendo la acción terapéutica de los antibióticos actuales. Por ello, la búsqueda de nuevos compuestos con propiedades antimicrobianas se hace más relevante en...

Effects of low-level laser therapy on stem cells from human exfoliated deciduous teeth

J. appl. oral sci; 24 (4), 2016
ABSTRACT Low-Level Laser Therapy stimulates the proliferation of a variety of types of cells. However, very little is known about its effect on stem cells from human exfoliated deciduous teeth (SHED). Objective This study aimed to evaluate the influence of different laser therapy energy densities on SH...

Macelignan inhibits bee pathogenic fungi Ascophaera apis growth through HOG1 pathway

Braz. j. med. biol. res; 49 (7), 2016
Ascosphaera apis is a bee pathogen that causes bee larvae infection disease, to which treatment is not yet well investigated. The aim of this study was to investigate antifungal susceptibility in vitro against A. apis and to identify a new antifungal agent for this pathogen through minimal inhibitory con...