Escherichia coli and Pseudomonas aeruginosa eradication by nano-penicillin G.

The transformation of penicillin G into nano/micro-sized spheres (nanopenicillin) using sonochemical technology was explored as a novel tool for the eradication of Gram-negative bacteria and their biofilms. Known by its effectiveness only against Gram-positive microorganisms, the penicillin G spherization boosted the inhibition of the Gram-negative Pseudomonas aeruginosa 10-fold (from 0.3 to 3.

Antibacterial and antibiofilm properties of yttrium fluoride nanoparticles.

Antibiotic resistance has prompted the search for new agents that can inhibit bacterial growth. Moreover, colonization of abiotic surfaces by microorganisms and the formation of biofilms is a major cause of infections associated with medical implants, resulting in prolonged hospitalization periods and patient mortality. In this study we describe a water-based synthesis of yttrium fluoride (YF(3)) nanoparticles (NPs) using sonochemistry.

Characteristics associated with purchasing antidepressant or antianxiety medications through primary care in Israel.

Objectives: This study analyzed the role of patient and physician characteristics associated with the purchase of antidepressant or antianxiety medications in Israel, a country that has a universal health care system.

Methods: A national sample of 30,000 primary care patients over the age of 22 was randomly drawn from the registry of the largest health care fund in Israel. Data concerning medication purchase between January and December 2006 were extracted.

Differential gene expression in Symbiodinium microadriaticum clade B following stress.

Coral bleaching is caused by the loss of symbiont zooxanthellae and/or decrease in their pigments. Since the algal symbionts provide the energy basis for corals and whole reefs, their loss or impairment of function leads to widespread mortality. This phenomenon has been documented numerous times in recent years, and has extensively damaged coral reefs all over the world.

Endocrinology of the aging male.

Despite enormous medical progress during the past few decades, the last years of life are still accompanied by increasing ill health and disability. The ability to maintain active and independent living for as long as possible is a crucial factor for ageing healthily and with dignity. The most important and drastic gender differences in aging are related to the reproductive organs.