BACKGROUND Arctium species (Asteraceae) are distributed worldwide and are used as food and rich sources of secondary metabolites for the pharmaceutical industry, e.g., against avian influenza virus. RNA silencing is an antiviral defense mechanism that detects and destroys virus-derived double-stranded RNA, resulting in accumulation of virus-derived small RNAs (21-24 nucleotides) that can be use...

INTRODUCTION This article aims to evaluate how different superelastic nickel-titanium (NiTi) alloys determine the static mechanical performance of endodontic files during bending and torsion. METHODS Two NiTi rotary instruments with similar geometries and equal cross sections, ProFile GT (GT) and a GT Series X (GTX), were selected. The latter file is made from M-Wire, a NiTi alloy that, accor...

Background: Malassezia spp. is an opportunistic dimorphicBasidiomycetous fungi associated with a variety of diseasesincluding dandruff, atopic eczema, pityriasis versicolor, seborrheicdermatitis and folliculitis. It also causes systemic infectionsin immune compromised patients. The aim of this study wasto evaluate the antimicrobial activity of nettle leaves (Urticadioica), colocynths fruits (Ci...

Burdock roots are healthy dietary supplements and a kind of famous traditional Chinese medicine, which contains large amounts of caffeoylquinic acid derivatives. However, little research has been reported on the preparative separation of these compounds from burdock roots. In the present study, a combinative method of HSCCC and semi-preparative HPLC was developed for the semi-preparative separa...

This in vitro study investigated whether permanent anterior incisors that are endodontically treated with cemented fiber-reinforced composite (FRC) posts without additional canal preparation can potentially increase the resistance to fracture and thus reduce the rate of clinical failure in root canals. Extracted human permanent maxillary central incisors (n = 120) were randomly assigned to 2 ex...

Field trials with 56 soybean cultivars and breeding lines from public and private sources were conducted from 1986 through 1988 at a site infested with Meloidogyne arenaria race 2. Differences (P < 0.05) among yields were found each year and yields were negatively correlated (P < 0.01) with root-knot nematode galling. All entries were galled and the highest-yielding entries, 'Kirby' and 'Coker ...

Let someone else who enjoys them provide that service. If molar root canals are stressful for you, refer the patient. Talk to your colleagues. Now that you’re getting a little older, that young practitioner down the block with nerves of steel may be happy to handle your pediatric clients. If you don’t enjoy providing a particular service, you won’t do it as well as you could. My policy has alwa...