Environmental Fe, Ti, Al, Cu, Hg, Bi, and Si Nanoparticles in the Atrioventricular Conduction Axis and the Associated Ultrastructural Damage in Young Urbanites: Cardiac Arrhythmias Caused by Anthropogenic, Industrial, E-Waste, and Indoor Nanoparticles.

Air pollution exposure is a risk factor for arrhythmia. The atrioventricular (AV) conduction axis is key for the passage of electrical signals to ventricles. We investigated whether environmental nanoparticles (NPs) reach the AV axis and whether they are associated with ultrastructural cell damage.

Tracheal growth assessment in mongrel puppies (dogs) through multidetector CT.

The aim of this study was to describe the tracheal growth pattern and its zoometric relationship in related medium-sized mongrel puppies through adulthood. Fourteen puppies were studied. CT monitoring was performed monthly, starting in the 1st month of life through the 7th month and subsequently at the 9th and 12th months.

[Experimental bacterial contamination of bile and liver in mongrel dogs: an alternative treatment with cephalone, a hybrid of cephalosporine fluoroquinolone].

Objectives: A longitudinal, randomized, single blind study was done to evaluate the efficacy of an antibacterial hybrid molecule (beta-lactamic-fluoroquinolone) named cephalone after biliary-enteric-bypass (BEB).

Material And Methods: Four groups of mongrel dogs were operated on three consecutive periods. Cultures of bile and liver were obtained and assessed, followed by obliteration of common bile duct and BEB to groups A, B and C.

Effects of mesocaval shunt on the pharmacokinetics of metronidazole in young rats.

Prophylactic and therapeutic management of portosystemic encephalopathies is based on protein restriction in the diet, and the use of lactulose and antibiotics such as metronidazole. These actions intend to reduce the main source of intestinal ammonia production and release into the systemic circulation. The aim of this study was to evaluate the medium-term effects of mesocaval shunt on the pharmacokinetics of metronidazole in rats with healthy livers.

Video-assisted thoracoscopy for diaphragmatic plication: experimental study in a canine model.

Background: Plication of a nonfunctional hemidiaphragm usually restores altered ventilatory mechanics. This study compared two techniques in performing diaphragmatic plication: video-assisted thoracoscopy (group A) and thoracotomy (group B).

Materials And Methods: Twenty dogs with induced paralysis of the right hemidiaphragm were randomly assigned to one of the two groups.

[Publication profile (1991-2002) of a group of Mexican pediatric surgeons].

Introduction: This study was undertaken to determine the characteristics of scientific articles published by Mexican pediatric surgeons (MPS) available in the major electronic databases for international and national medical information.

Material And Methods: An observational, descriptive and transversal study was performed. Articles written by pediatric surgeons were localized in the most frequently accessed electronic searches: Medline, EMBASE, LILACS, and ARTEMISA, in the period from January 1991 to December 2002.