Background and Objective: Changes of the enzyme acetylcholinesterase are involved in pathogenesis of different nervous disorders including Alzheimer’s disease. This research work was conducted to evaluate the inhibitory effect of Pistacia lentiscus ethanolic extract on acetylcholinesterase activity. Materials and Methods: Activity of the enzyme acetylcholinesterase (AChE) was measured by Ellman...

BACKGROUND Intracavity infusion of fibrin sealant-based agents, as a novel modality to control internal bleeding, is associated with an increase of pneumoperitoneum (PP) pressure. The safe limit of such increase has not been well defined in hypovolemic subjects. The purpose of this study was to evaluate the hemodynamic and metabolic effects of increasing PP pressure and to define the limits of ...

PURPOSE To determine whether tumor size correlates with histopathological involvement and hence evaluate the rationality of conservative treatment for retinoblastoma. METHODS We retrospectively studied 221 patients (221 eyes) treated for retinoblastoma with enucleation in the Zhongshan Ophthalmic Center of Sun Yat-sen University, China, from October 1995 to December 2004. Histopathological da...

Objective(s): The aim of this study is to examine the effect of different smoothing filters on the image quality and SUVmax to achieve the guideline recommended positron emission tomography (PET) image without harmonization. Methods: We used a Biograph mCT PET scanner. A National Electrical Manufacturers Association (NEMA) the International Electrotechnical Commission (IEC) body phantom was fil...

BACKGROUND Endoscopic parathyroidectomy and thyroidectomy were introduced into clinical practice in 1995. Concerns about the use of carbon dioxide insufflation in the neck exist owing to reports of potential adverse metabolic and hemodynamic changes. HYPOTHESIS Carbon dioxide insufflation in the neck may cause adverse effects on hemodynamic and blood gas levels. These adverse effects may refl...