Drug-loaded mono- and multilayer composite membranes were prepared. The composites, based on nano-fibrillated bacterial cellulose, nano-powdered polyvinyl alcohol, all biocompatible biodegradable, characterized in terms of basic factors related to drug diffusivity mass transfer: swelling ability, water solubility, vapor permeability. Tetracycline hydrochloride was used this case as model. Drug ...

SSCN is a new type of self-sensitive photocatalyst. It consists oxygenated carbon nitride-containing microspheres inside and polymerized triazine dye (TBO) formed on its surface by in situ polymerization. The presence TBO endows with wide range optical responses. However, the would self-degrade under light, making extremely unstable photocatalytic reactions limiting practical application SSCN. ...

in this paper, the photocatalytic degradation of lidocaine hcl, an anesthetic was investigated inaqueous solution using cuo/zno as a photocatalyst. the degradation was studied under differentconditions including the amount of the photocatalyst, irradiation time, initial concentration of drug,ph of the system, initial concentration, addition of oxidant on the reaction rate and anion presence.the...

abstract: antibiotics are a valuable addition to health practitioners for the management of bacterial infections. during endodontic treatment and when managing trauma to the teeth, antibiotics may be applied systemically or locally. due to the potential risk of adverse effects of systemic applications, and the ineffectiveness of systemic prescribed antibiotics in necrotic or pulpless teeth and ...

tetracycline may be used to treat several types of bacterial diseases in ruminants. in addition, tetracycline is added to food to promote the growth. there are few reports on the pharmacokinetics of tetracycline in sheep. therefore, the objective of this study was to examine the pharmacokinetic characteristics of the drug in sheep. ten apparently healthy mixed-breed sheep were administered 20 m...

The antimicrobial susceptibility of five Lyme disease spirochete strains (two human and three tick isolates) was determined. A macrodilution broth technique was used to determine on three separate test occasions the minimal inhibitory concentrations (MICs) of seven antibiotics. The Lyme disease spirochete was most susceptible to erythromycin with a MIC of less than or equal to 0.06 micrograms/m...

We studied whether K+-Cl(-) cotransporters (KCCs) are involved in gastric HCl secretion. We found that KCC4 is expressed in the gastric parietal cells more abundantly at the luminal region of the gland than at the basal region. KCC4 was found in the stimulation-associated vesicles (SAV) derived from the apical canalicular membrane but not in the intracellular tubulovesicles, whereas H+,K+-ATPas...

in this assay, edible cattle tissues from local markets of ardabil, a province of iran, were examined for residues of tetracycline antibiotics (tetracycline, oxytetracycline and chlortetracycline). in total, 110 samples of triceps, gluteal muscle, diaphragm, kidney and liver were randomly obtained from the local markets of the city of ardabil. solid-phase extraction (spe) and high-performance l...