Effect of Anterior Disc Displacement and Estrogen Deficiency on Rabbit Mandibular Condyle.

Objective: In this study, we aimed to establish an experimental model of idiopathic condylar resorption by combining surgically induced anterior disc displacement and estrogen deficiency in growing rabbits. This study aimed to investigate the individual and combined effects of these factors on condylar resorption.

Materials And Methods: Seventeen female Japanese White rabbits were divided into four groups: control, ovariectomy, anterior disc displacement surgery, and combination of ovariectomy and anterior disc displacement surgery.

The swelling behaviour of hair studied through the structural change of keratin protein during the permanent waving treatment.

Filament of human hair is formed from α-keratin protein and its physical property is predominantly dominated by the structure of microfibril (also known as intermediate filaments (IF)). It is known that human hair is swollen by permanent waving (pw) treatment which consists of the reducing process and following oxidizing process, but a detail in the swelling behaviour remains still unclarified. The present work was devoted to the analysis of the swelling behaviour of hair through the structural change of IF during pw treatment, where 1.

Simultaneous beating-heart mitral valve replacement and aortic repair following Bentall procedure via double right mini-thoracotomies: a case report.

Background: Redo mitral valve surgery by re-sternotomy approach has challenges such as bleeding and organ injury due to adhesion dissection, sternal bone infection, and poor field of view of mitral valve. On the other hand, redo mitral valve surgery via a right mini-thoracotomy approach appears to address these challenges. We successfully performed a double right mini-thoracotomies approach for mitral valve replacement and pseudoaneurysm repair under the beating-heart condition.

Oxidative generation of isobenzofurans from phthalans: application to the formal synthesis of (±)-morphine.

Treatment of phthalan derivatives with -chloranil in dodecane in the presence of molecular sieves at 160-200 °C allowed the generation of unstabilized isobenzofurans, which underwent intramolecular Diels-Alder reaction to give endo cycloadducts exclusively. The cycloaddition turned out to be reversible, providing an equilibrium mixture of endo adducts when heating a substrate with a stereocenter on the tether. We also demonstrated the regioselective allylation of an oxygen-bridged cycloadduct upon exposure to EtAlCl in the presence of allyltrimethylsilane, and the conversion to Rice's intermediate completed a formal synthesis of (±)-morphine.