Surfactant-dye interactions are very important in chemical and dyeing processes. The dyes interact strongly with surfactant and show new spectrophotometric properties, so the UV-vis absorption spectrophotometric method has been used to study this process and extract some thermodynamic parameters. In this work, the association equilibrium between ionic dyes and ionic surfactant were studied by a...

Introduction Lung surfactant is a mixture of lipids, primarily dipalmitoylphosphatidylcholine, and several specific proteins, that lines the interior of the lung alveoli. Lung surfactant lowers the interfacial tension in the lungs, thereby insuring a negligible work of breathing and uniform lung inflation. The absence of lung surfactant in premature infants leads to neonatal Respiratory Distres...

A specific antibody against proinsulin has been obtained by adsorbing the original anti-proinsulin guinea pig serum with a solid immunosorbent of Sephadex-insulin. The specificity of the antibody against antigenic determinants of proinsulin was established by radioimmunoassay and by passive cutaneous anaphylaxis (PCA) tests. The presence of proinsulin in calf serum has been demonstrated by (a) ...

The purpose of the present study is to analyze the effect of serum or chick embryo extract (CEE) on the neuronal differentiation of the mouse neural crest cells. When the crest cells were cultured in the medium containing serum at low concentration (5% calf serum), neurite outgrowth was observed. The active outgrowth was detected at 3-4 days in culture. However, in the medium supplemented with ...

in this study the nature of chromosomal proteins, his tones and nonhistone in resident alveolar macrophages was investigated in comparison to peritoneal neutrophils and calf thymus proteins. cells were obtained by lavaging the lung and after purity determination they were subjected to fractional extraction procedures. proteins were then analysed on sds polyacrylamide gels and densitometric scan...

The purpose of this study was purification and characterization of phenol monooxygenase from Stenotrophomonas maltophilia strain KB2, enzyme that catabolises phenol and its derivatives through the initial hydroxylation to catechols. The enzyme requires NADH and FAD as a cofactors for activity, catalyses hydroxylation of a wide range of monocyclic phenols, aromatic acids and dihydroxylated deri...

The aim of present study was to investigate the potential antioxidant and lung protective activities of Sambucus ebulus (SE) against toxicity induced by gamma irradiation. Hydroalcoholic extract of SE (20, 50 and 100 mg/kg) was studied for its lung protective activity. Phenol and flavonoid contents of SE were determined. Male C57 mice were divided into ten groups with five mice per group. Only ...