Hydrophobization of Kraft-type Cellulose and Microfiber Cellulose Obtained from Soybean Husk in Ultrasonic Field.

Background: The addition of nanoparticles to cellulose paper can improve its mechanical strength, chemical stability, biocompatibility and hydrophobic properties. Silica nanoparticles are known to be inert, hydrophobic, biocompatible, biodegradable and have a good distribution in being deposited on surfaces. The main characteristics of 20 nm SiO2 nanoparticles are good chemical and thermal stability with a melting point of 1610-1728°3C, a boiling point of 2230°C with a purity of 99.

Intravenous colistin sulphomethate sodium for therapy of infections due to multidrug-resistant gram-negative bacteria.

Objective: To assess the efficacy and toxicity of intravenous colistin in the treatment of infections due to multidrug-resistant gram-negative bacteria.

Methods: Retrospective cohort study.

Results: Sixty patients received colistin sulphomethate sodium (mean dose, 4.

Spanish BH4-responsive phenylalanine hydroxylase-deficient patients: evolution of seven patients on long-term treatment with tetrahydrobiopterin.

A novel subtype of patients with mutations in the phenylalanine hydroxylase (PAH) gene that show a positive response during a tetrahydrobiopterin (BH4) loading test has recently been recognized. These studies suggest that a number of phenylketonuric (PKU) patients may benefit from BH4 substitution, eliminating the need of life-long dietary restrictions. In our unit, we performed BH4 overload tests in 50 PAH-deficient patients.