Equilibrium of monomers, dimers, and polymeric aggregates in the α-aryl-propionic acid-type analgesics naproxen, ketoprofen, and ibuprofen: Comparative study with oxicam-type meloxicam and piroxicam.

Hydrophobicity is associated with drug transport across membranes and is expressed as the partition coefficient log P for neutral drugs and the distribution coefficient log D for acidic and basic drugs. The log P and log D predictions are deductively (or with artificial intelligence) estimated as the sum of the partial contributions of the scaffold and substituents of a single molecule and are used widely and affirmatively. However, their predictions have not always been comprehensively accurate beyond scaffold differences.

Spring and parachute approach for piroxicam dissolution; its phenomenological model on the thermodynamics of irreversible processes.

Even though the spring and parachute approach for poorly water-soluble drug candidates effectively improves their dissolution curves with eutectic mixtures, deep eutectic solvents, solid dispersion polymers, and solid solutions, we cannot consider that its enabling factor in these pharmaceutical modifications was enough to be clarified. Based on our previous study that oxybuprocaine acts as a role of parachute generator for piroxicam, the present study explored a small-molecule parachute generator and found that propranolol, a β-adrenergic-blocking drug, has a parachute effect on the supersaturated state of piroxicam. In addition, changing the concentration of tetracaine and dibucaine to 10 mM and 2.

Photodynamic therapy using talaporfin sodium induces concentration-dependent programmed necroptosis in human glioblastoma T98G cells.

Photodynamic therapy (PDT) using photosensitizer induces several types of cell death, such as apoptosis, necrosis, and autophagy, depending on the PDT procedure, photosensitizer type, and cell type. We previously demonstrated that PDT using the photosensitizer talaporfin sodium (mono-L-aspartyl chlorine e6, NPe6; NPe6-PDT) induces both mitochondrial apoptotic and necrotic cell death in human glioblastoma T98G cells. However, details regarding the mechanism of necrosis caused by NPe6-PDT are unclear.

Concomitant treatment with temozolomide enhances apoptotic cell death in glioma cells induced by photodynamic therapy with talaporfin sodium.

Background: Photodynamic therapy (PDT) induces selective cell death of neoplastic tissue and connecting vasculature by combining photosensitizers with light. We have previously reported that PDT induces apoptotic cell death in glioma cells when the photosensitizer talaporfin sodium (NPe6) is used. Here, we investigated the combined effect of NPe6-PDT with temozolomide, a DNA-alkylating drug used in glioma therapy.

Edema and elasticity of a fronto-temporal decompressive craniectomy.

Background: Decompressive craniectomy is undertaken for relief of brain herniation caused by acute brain swelling. Brain stiffness can be estimated by palpating the decompressive cranial defect and can provide some relatively subjective information to the neurosurgeon to help guide care. The goal of the present study was to objectively evaluate transcutaneous stiffness of the cranial defect using a tactile resonance sensor and to describe the values in patients with a decompressive window in order to characterize the clinical association between brain edema and stiffness.