Results: 10

Human keratinocyte cell line as a suitable alternative model for in vitro phototoxicity testing

An. bras. dermatol; 94 (1), 2019

Effect of low power laser in biomodulation of cultured osteoblastic cells of Wistar rats

Acta cir. bras; 34 (2), 2019
Abstract Purpose: To analyze aspects of the biomodulating effect of light in biological tissues, bone cells from surgical explants of the femur of rats were irradiated with low intensity laser. Methods: Bone cells were cultured and irradiated with LASER light (GaAlAs). Growth, cell viability, mineral...

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...

Analysis of radioprotection and antimutagenic effects of Ilex paraguariensis infusion and its component rutin

Braz. j. med. biol. res; 51 (9), 2018
DNA repair pathways, cell cycle checkpoints, and redox protection systems are essential factors for securing genomic stability. The aim of the present study was to analyze the effect of Ilex paraguariensis (Ip) infusion and one of its polyphenolic components rutin on cellular and molecular damage induced...

Low-level laser irradiation promotes proliferation of cryopreserved adipose-derived stem cells

Einstein (Säo Paulo); 15 (3), 2017
ABSTRACT Objective To evaluate the effect of low-level laser irradiation on proliferation and viability of murine adipose-derived stem cells previously submitted to cryopreservation. Methods Adipose-derived stem cells were isolated from inguinal fat pads of three mice, submitted to cryopreservation i...

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...

Cytotoxicity and cytokine expression induced by silorane and methacrylate-based composite resins

J. appl. oral sci; 24 (4), 2016
ABSTRACT The successful use of composite resins in Dentistry depends on physicochemical properties, but also on the biological compatibility of resins, because of the close association between pulp and dentin. Objective The aim of this study was to evaluate cytotoxicity and cytokine production induced ...

The effects of riboflavin and ultraviolet light on keratocytes cultured in vitro

Arq. bras. oftalmol; 79 (3), 2016
ABSTRACT Purpose: To culture quiescent human keratocytes and evaluate the effects of ultraviolet light and riboflavin on human corneal keratocytes in vitro. Methods: Keratocytes were obtained from remaining corneoscleral ring donor corneas previously used in corneal transplant surgeries and cultured in...

Influência de diferentes densidades de energia do laser de baixa intensidade em fibroblastos derivados da polpa de dentes decíduos

O objetivo deste trabalho foi comparar os efeitos de diferentes densidades de energia e irradiâncias do Laser de Baixa Intensidade (LBI), variando em função do tempo de irradiação e potência, na viabilidade e proliferação de fibroblastos derivados da polpa de dentes decíduos humanos (HPF). HPF f...

Low-intensity laser phototherapy enhances the proliferation of dental pulp stem cells under nutritional deficiency

Braz. oral res. (Online); 30 (1), 2016
Abstract Dental trauma in immature permanent teeth can damage pulp vascularization, which leads to necrosis and cessation of apexogenesis. Studies on tissue engineering using stem cells from human exfoliated deciduous teeth (SHEDs) have yielded promising results. Laser phototherapy (LPT) is able to influ...