OBJECTIVE The aim of this investigation was to evaluate the cytotoxicity of two brands of root canal sealers, epoxy-resin based and zinc oxide-eugenol based, and one commercial calcium hydroxide paste on a monocyte cell line THP-1. MATERIAL AND METHODS Undiluted (crude extract) and diluted extracts to 10%, 1%, 0.1%, 0.01%, 0.001% and 0.0001% of the sealers were tested for cytotoxicity to THP-...

OBJECTIVE To investigate antimicrobial effects of ethanolic extract of Zingiber zerumbet (Z. zerumbet) (L.) Smith and its chloroform and petroleum ether soluble fractions against pathogenic bacteria and fungi. METHODS The fresh rhizomes of Zingiber zerumbet were extracted in cold with ethanol (4.0 L) after concentration. The crude ethanol extract was fractionated by petroleum ether and chloro...

Folkloric use of root-bark extract of Alstonia boonei in the treatment and management of many disease conditions may be associated with free radical scavenging as part of its mechanisms of action. We therefore evaluated the ability of different solvent fractions of the methanol extract, crude precipitate from the extract, and isolated compound from the crude precipitate for scavenging 2,2-diphe...

A crude extract of Crypthecodinium cohnii and its main component, dimethyl-beta-propiothetin, significantly and dose-dependently protected the gastric mucosa against HCl.ethanol-induced lesions in rats. Since indomethacin pretreatment reduced the protective effect to some extent, endogenous prostaglandins might be partly involved in the mechanism of action. Both the crude extract and dimethyl-b...

The crude extract of a New Zealand ascidian displayed antitumor activity. Bioassay-directed fractionation yielded a novel alkaloid, coproverdine (1). The structure of 1 was assigned on the basis of detailed spectroscopic analysis. Coproverdine (1) was responsible for the antitumor activity of the crude extract.

Leaves of Artemisia annua linn. and Azadirachta indica were extracted in petroleum ether and hexane respectively by different methods of extraction i.e. cold extraction, reflux extraction and soxhlet extraction. The crude extract obtained was tested against third instar larvae of Anopheles stephensi. On comparison of larval mortality of crude extract obtained by these three methods, both soxhle...

The effects of three different traditional processing methods (smoking, frying and salting) on proximate composition of red fish stored under ambient room conditions were determined. Fresh red fish were obtained from Elmina fish market. These were used for the study to determine the proximate properties of the raw fish, smoked fish, fried fish and salted fish before and after storage. The param...

The aim of the present study is to quantify the amount of aspartic acid in Coccinia indica crude drug, lab extract and commercial extract by HPTLC method. The stationary phase was precoated aluminium silica gel G F 254 Plates. The mobile phase for aspartic acid was n-Butanol: Glacial acetic Acid: Water (50: 10: 40). The methanolic solution of standard aspartic acid (1 mg/ ml concentration) 5 μl...

objective(s): regarding the presence of many active biological constituents in avicennia marina, the present investigation was carried out to study cytotoxic activity of crude methanol leave extract and column chromatographic fractions of a. marina against mda-mb 231 cell line (human breast cancer cell) and hek (human embryonic kidney cell) line .   materials and methods: the anticancer activit...

Purpose: To evaluate the diuretic activity and acute toxicity profile of the crude aqueous extract of Achyranthes aspera using animal models. Methods: Albino rats of either sex were divided into five groups (six animals in each group). The control group received normal saline (10 ml/kg), the reference group received furosemide (10 mg/kg) and the test groups were administered different doses of ...