Kinetic Model of Fluorescein Release through Bioprinted Polylactic Acid Membrane.

Polylactic acid (PLA)-based cylindrical membranes for the controlled release of fluorescein sodium salt (FS) were prepared by bioprinting on systems with an initial FS concentration of 0.003763 gdm and 37.63 gdm, and the drug release process was monitored in a bath at 37 °C.

Effects of Anionic Liposome Delivery of All--Retinoic Acid on Neuroblastoma Cell Differentiation.

All--retinoic acid (ATRA) has long been known to affect cell growth and differentiation. To improve ATRA's therapeutic efficacy and pharmacodynamics, several delivery systems have been used. In this study, free ATRA and anionic-liposome-encapsulated ATRA were compared for their effects on SK-N-SH human neuroblastoma cell growth and differentiation.

Excess Absorbance as a Novel Approach for Studying the Self-Aggregation of Vital Dyes in Liquid Solution.

In the present paper, a simple method for analyzing the self-aggregation of dyes in a solution by a UV-visible absorption measurements is proposed. The concept of excess absorbance is introduced to determine an equation whose coefficients determine the parameters of the aggregation equilibrium. The computational peculiarities of the model are first discussed theoretically and then applied to sodium fluorescein in polar protic and aprotic solvents, as well as in aqueous solutions of methylene blue, which is a cationic dye.

Trapped radical behavior of electron beam irradiated polytetrafluoroethylene fine powder at various temperatures.

Polytetrafluoroethylene (PTFE) fine powder with 93% crystallinity was irradiated by an electron beam (EB) at various temperatures under a nitrogen atmosphere. Trapped free radicals in PTFE were studied using electron spin resonance (ESR) spectroscopy. The observed spectra of the samples exposed to air after irradiation at various temperatures showed asymmetrical signals, which are middle-chain type peroxide macroradicals derived from fluoroalkyl radicals.

Head and neck diffuse large B cell lymphomas (HN-DLBCL) in human immunodeficiency virus (HIV) positive patients: long-term results in the highly active antiretroviral therapy (HAART) era.

To report long-term outcomes and toxicity rates after chemotherapy (CHT) followed by radiotherapy (RT) in the highly active antiretroviral therapy (HAART) era in human immunodeficiency virus (HIV) positive patients with head and neck diffuse large B cell lymphomas (HN-DLBCL). Clinical data concerning consecutive HIV patients treated for DLBCL located in head and neck region with CHT and RT were retrospectively reviewed. Systemic treatment consisted of combination CHT agents given with concomitant HAART and regimen was left to oncologists' discretion.