While silica particles are considered to be fibrogenic and carcinogenic agents, the mechanisms responsible are not well understood. This article summarizes literature on silica-induced accelerated silicosis, chronic silicosis, silico-tuberculosis, bronchogenic carcinoma, and immune-mediated diseases. This article also discusses the generation of reactive oxygen species (ROS) that occurs directl...

Silica is a toxicant that can stimulate cells to produce various cellular products such as free radicals, cytokines, and growth factors. Silica and its induced substances may induce apoptosis to regulate the evolution of silica-induced inflammation and fibrosis. To examine this hypothesis, groups of Wistar male rats were intratracheally instilled with different doses of Min-U-Sil 5 silica (Sili...

This study evaluates the potential application of tin porphyrin- and C(60) aminofullerene-derivatized silica (SnP/silica and aminoC(60)/silica) as (1)O(2) generating systems for photochemical degradation of organic pollutants. Photosensitized (1)O(2) production with SnP/silica, which was faster than with aminoC(60)/silica, effectively oxidized a variety of pharmaceuticals. Significant degradati...

An affinity monolith based on silica and containing immobilized α1-acid glycoprotein (AGP) was developed and evaluated in terms of its binding, efficiency and selectivity in chiral separations. The results were compared with data obtained for the same protein when used as a chiral stationary phase with HPLC-grade silica particles or monoliths based on a copolymer of glycidyl methacrylate (GMA) ...

purpose: to evaluate the effect of intravitreal triamcinolone acetonide (ivt) reinjection on clinical and optical coherence tomographic (oct) features in refractory diabetic macular edema (dme). methods: in an interventional case series, all ivt-treated patients enrolled in a previous clinical trial (45 subjects), were recalled for performing a new ophthalmologic examination and oct. suitable e...

purpose: to evaluate the effect of intravitreal triamcinolone acetonide (ivt) on clinical, angiographic, and optical coherence tomographic parameters in refractory diabetic macular edema (dme). methods: in a double-masked placebo-controlled randomized clinical trial, 88 eyes of 61 patients with dme refractory to previous laser therapy or not suitable for such treatment were included in the stud...

objecive prolonged and uncontrolled refractory status epilepticus (se) is a life-threatening medical emergency in children (1,2,3). there is no consensus on the optimal therapy for refractory status epilepticus (1). the aim of this study was to develop a new method for treating patients with refractory status epilepticus. materials & methods ten children with refractory status epilepticus in mo...

Lamotrigine (LTG), a newly developed antiepileptic drug (AED), is efficacious in treating refractory epilepsy. This study was designed to evaluate the efficacy and safety of LTG as add-on therapy in 40 children with refractory epilepsy. The trial was an open-labeled prospective study in children with drug-resistant epilepsy aged