INTRODUCTION The aim of the present in vitro study was to evaluate the cytotoxicity of different sealers including GuttaFlow Bioseal, GuttaFlow 2, AH-Plus and MTA Fillapex on L929 murine fibroblasts. METHODS AND MATERIALS Samples of GuttaFlow Bioseal, GuttaFlow 2, AH-Plus and MTA Fillapex were fabricated in Teflon disks of 5 mm diameter and 3 mm thickness. L929 fibroblasts were exposed to the...

Murine L929 fibrosarcoma cells were transfected with the human Fas (APO-1/CD95) receptor, and the role of various caspases in Fas-mediated cell death was assessed. Proteolytic activation of procaspase-3 and -7 was shown by Western analysis. Acetyl-Tyr-Val-Ala-Asp-chloromethylketone and benzyloxycarbonyl-Asp(OMe)-Glu(OMe)-Val-Asp(OMe)-fluoromethylketone++ +, tetrapeptide inhibitors of caspase-1-...

      Current therapies for breast cancer are often limited by short-term efficacy due to the emergence of drug resistance. There has been increased interest in the use of naturally occurring compounds with chemopreventive and chemotherapeutic effects in the treatment of cancers. Saffron, dry stigmas Crocus sativus L., used in Iran as a spice, is known for its anticancer properties. In...

In this study, we present initial data for the potential anti-cancer effects of standardized Bulgarian Petasites hybridus root extract against breast cancer cells. The results showed that Butterbur (BE) caused a dose-dependent selective reduction in viability with concomitant increase apoptosis human cells after 72 h treatment. We found highest cytotoxicity BE to MDA-MB-231 (IC50 – 520 ?g/mL), ...

We investigated optimal conditions for cytotoxicity to tumor cell lines by recombinant human tumor necrosis factor (rhTNF) and the effect of amino-terminal deletions on the bioactivity of the rhTNF molecule. Two of four deletion muteins (-4 and -7) of rhTNF exhibit 2- to 3-fold enhancement of cytotoxicity/cytostasis against a variety of human carcinomas, a fibrosarcoma, and a melanoma cell line...

BACKGROUND In this study, the effects of three structural analogues of adenosine upon proliferation of human tumor cells were investigated. Previous research showed a cytotoxic effect of adenosine via A3 receptor and A1 receptor and sometimes this effect was receptor independent. The researches showed a differential cytotoxic effect of adenosine and its A3 agonists on cancerous cells, while oth...

Aiming to produce an antimicrobial dressing for wound healing applications, in this work Tea Tree oil (TTO) was incorporated into PHBV nanofibers by absorption. It observed increase the nanofiber diameter due 5% TTO absorption efficiency, which also led a 54% decrease contact angle. The releasing assay indicates 6.8% release first 24 h – being probably deposited at polymer surface followed mini...

Investigation of the effects prantchimgin (Prn) compound isolated from root part Ferulago pauciradiata (Apiaceae) plant in lipopolysaccharide (LPS) cytotoxicity model created L929 cell line. lines were applied a 5% CO2 incubator at 37 °C, using standard culture procedures, LPS was with Prn pure substance final concentration 2 µL and 1 after hour. Following application, MTT protocol, colorimetri...

Methods: Three concentrations of carbamide peroxide (10%, 16%, and 22%) used in home bleaching techniques were evaluated regarding their cytotoxic effect on gingival tissues. The materials were divided into three groups as follows: Group C10 (White Gold Home 10%, Dentsply), Group C16 (White Gold Home 16%, Dentsply, and Group C22 (Nite White 22%, ACP Discus Dental). The cytotoxicity essay was ca...