Antimicrobial activity of seaweeds of Pernambuco, northeastern coast of Brazil
The antibacterial efficacy of various solvent extracts of marine algae Caulerpa racemosa, Ulva lactuca (Chlorophyta), Jania adhaerens (Rhodophyta), Padina gymnospora and Sargassum polyceratium (Phaeophyta) against some selected gram-positive and gram-negative human pathogenic bacteria was screened. Crude extracts were prepared from the selected marine algae using different solvents namely, hexane, chloroform, ethyl...
Comparative evaluation of antibacterial activity of induced and non-induced Cajanus cajan seed extract against selected gastrointestinal tract bacteria
Gastrointestinal tract (GIT) infections are major causes of mortality and morbidity world-wide, especially in developing countries. Cajanus cajan extracts possess therapeutic properties. In this study, the induced and non-induced antibacterial properties of C. cajan seeds were evaluated against bacterial strains implicated in GIT infections by Disc diffusion method and Micro-well dilution assay. C. cajan produced...
In vitro antitumoral activity of soluble protein extracts of Bacillus thuringiensis
There are many studies about the antitumour effects of Bacillus toxins from different strains or subspecies in different parts of the world. Proteins that selectively kill tumor cells in vitro have potential as anticancer agents. The aim of this study was to evaluate the cytotoxic activity of soluble proteins extracts (SPE) from Mexican strains of B. thuringiensis on murine lymphoma L5178YR cell line. In vitro, L5178YR...
Diversity of fungi in sediments and water sampled from the hot springs of Lake Magadi and Little Magadi in Kenya
Lake Magadi and Little Magadi are saline, alkaline lakes lying in the southern part of Kenyan Rift Valley. Their solutes are supplied by a series of alkaline hot springs with temperatures as high as 86°C. Previous culture-dependent and independent studies have revealed diverse prokaryotic groups adapted to these conditions. However, very few studies have examined the diversity of fungi in these soda lakes. In this...
Phenotypic and genotypic detection of Î²-lactams resistance in Klebsiella species from Egyptian hospitals revealed carbapenem resistance by OXA and NDM genes
The β-lactams are frequently used antibiotics and are essential in treatment of serious bacterial infections. The emergence of β-lactamases has been an ongoing serious therapeutic problem. To overcome this problem, scientists utilized several β-lactamases inhibitors such as clavulanic acid and tazobactam that are used in combination with antibiotics. However, pathogenic bacteria have acquired additional...