Results: 234

Efecto de la activación del receptor sensor de calcio sobre la expresión de genes lipogénicos en células HepG2

Introduction: The Calcium Sensing Receptor (CaSR) is expressed in human fat cells, and its stimulation may be associated with adipose tissue dysfunction. The multisystemic character of obesity and the search of deepening the scope of the activation of CaSR in this disorder allows us to study the response...

Endothelial assessment of donated tectonic corneas: a viable option for posterior lamellar transplantation

Arq. bras. oftalmol; 81 (2), 2018
ABSTRACT Purpose: Donated corneas are classified as tectonic if there are defects within any layers of the cornea which would prevent a satisfactory visual outcome after transplantation. This study aimed to evaluate whether some tectonic corneas have sufficient endothelial characteristics to allow their...

Effect of varying hypoxia reoxygenation times on autophagy of cardiomyocytes

Acta cir. bras; 33 (3), 2018
Abstract Purpose: To investigate the impact of different hypoxia reoxygenation (HR) times on autophagy of rat cardiomyocytes (H9C2). Methods: Rat cardiomyocytes were randomly divided into normal control group (group A), hypoxia group (group B), 2 h HR group (group C), 12 h HR group (group D), and 24 h...

Leishmanicidal compounds of Nectria pseudotrichia, an endophytic fungus isolated from the plant Caesalpinia echinata (Brazilwood)

Mem. Inst. Oswaldo Cruz; 113 (2), 2018
BACKGROUND In a screen of extracts from plants and fungi to detect antileishmanial activity, we found that the ethyl acetate extract of the fungus Nectria pseudotrichia, isolated from the tree Caesalpinia echinata (Brazilwood), is a promising source of bioactive compounds. OBJECTIVES The aims of this st...

Effect of titanium tetrafluoride varnish on fibroblasts (NIH/3T3): viability assay, morphological analysis and cell signals for apoptotic pathways

Current knowledge supports the application of TiF4 varnish to protect against tooth caries and erosion; however, it is indispensable to know its cytotoxic potential and the mechanism involved on it before applying in patients. Therefore, this study aimed to evaluate 1) The cytotoxic effect of titanium te...

Avaliação do efeito antiproliferativo da apocinina e diapocinina em células de osteossarcoma humano

O osteossarcoma (OS) é o tumor maligno primário mais comum do tecido ósseo, caracterizado pela formação de osteócitos anormais. Apesar do avanço nas terapias convencionais (quimioterapia e retirada do tumor), essas não conseguem eliminar totalmente as células tumorais e impedir a progressão da ...

Low-intensity pulsed ultrasound promotes proliferation and migration of HaCaT keratinocytes through the PI3K/AKT and JNK pathways

Braz. j. med. biol. res; 51 (12), 2018
Although the effects of low-intensity pulsed ultrasound (LIPUS) on diverse cell types have been fully studied, the functional role of LIPUS in keratinocytes remains poorly understood. This study aimed to investigate the effects of LIPUS on proliferation and migration of HaCaT cells as well as the regulat...

MicroRNA-221 promotes cell proliferation, migration, and differentiation by regulation of ZFPM2 in osteoblasts

Braz. j. med. biol. res; 51 (12), 2018
Bone fracture is a common medical condition, which may occur due to traumatic injury or disease-related conditions. Evidence suggests that microRNAs (miRNAs) can regulate osteoblast differentiation and function. In this study, we explored the effects and mechanism of miR-221 on the growth and migration o...

Astragalus polysaccharides decrease proliferation, migration, and invasion but increase apoptosis of human osteosarcoma cells by up-regulation of microRNA-133a

Braz. j. med. biol. res; 51 (12), 2018
Osteosarcoma (OS) has a high incidence, malignity, and frequency of recurrence and metastasis. In this study, we aimed to explore the potential anti-cancer effects of Astragalus polysaccharides (APS) on human OS MG63 cells as well as underlying mechanisms. Viability of MG63 cells was assessed by CCK-8 as...

Oridonin induces growth inhibition and apoptosis in human gastric carcinoma cells by enhancement of p53 expression and function

Braz. j. med. biol. res; 51 (12), 2018
The tumor suppressive role of oridonin, an active compound extracted from Rabdosia rubescens, has been proven in several gastric cancer (GC) cell lines. The present study aimed to evaluate the effect of oridonin on another GC cell line, SNU-216, and explore the potential mechanisms. The viable cell numbe...