Effects on gastric mucosa induced by dental bleaching--an experimental study with 6% hydrogen peroxide in rats.

Unlabelled: The value of aesthetic dentistry has precipitated several developments in the investigation of dental materials related to this field. The free marketing of these products is a problem and it is subject to various interpretations regarding its legality. There are several techniques for tooth whitening, the most used one being the external bleaching.

[Perioperative morbidity and mortality in the first year of life: a systematic review (1997-2012)].

Background And Objectives: Although many recognize that the first year of life and specifically the neonatal period are associated with increased risk of anesthetic morbidity and mortality, there are no studies directed to these pediatric subpopulations. This systematic review of the scientific literature including the last 15 years aimed to analyze the epidemiology of morbidity and mortality associated with general anesthesia and surgery in the first year of life and particularly in the neonatal (first month) period.

Content: The review was conducted by searching publications in Medline/PubMed databases, and the following outcomes were evaluated: early mortality in the first year of life (<1 Yr) and in subgroups of different vulnerability in this age group (0-30 days and 1-12 months) and the prevalence of cardiac arrest and perioperative critical/adverse events of various types in the same subgroups.

Perioperative morbidity and mortality in the first year of life: a systematic review (1997-2012).

Background And Objectives: Although many recognize that the first year of life and specifically the neonatal period are associated with increased risk of anesthetic morbidity and mortality, there are no studies directed to these pediatric subpopulations. This systematic review of the scientific literature including the last 15 years aimed to analyze the epidemiology of morbidity and mortality associated with general anesthesia and surgery in the first year of life and particularly in the neonatal (first month) period.

Content: The review was conducted by searching publications in Medline/PubMed databases, and the following outcomes were evaluated: early mortality in the first year of life (<1 year) and in subgroups of different vulnerability in this age group (0-30 days and 1-12 months) and the prevalence of cardiac arrest and perioperative critical/adverse events of various types in the same subgroups.

Gastroprotective effect of Cymbopogon citratus infusion on acute ethanol-induced gastric lesions in rats.

Ethnopharmacological Relevance: Treatment of gastric ulcers with medicinal plants is quite common in traditional medicine worldwide. Cymbopogon citratus (DC) Stapf. leaves infusion has been used in folk medicine of many tropical and subtropical regions to treat gastric disturbances.

Hematogenic Dissemination of Triple-negative Versus Hormonal Receptor-positive Breast Cancer Cells.

The aim of this study was to characterize the hematogeneous spread, in vivo, of breast cancer (BC) cell lines that express hormonal receptors (HR) comparing with triple-negative (TN) BC, particularly considering the lung and liver. Female Balb/c nu nu mice (n=30) were injected with two breast cancer cell lines (MCF7 and HCC1806). Nuclear medicine imaging with Technetium ((99m)Tc)-hydroxymethylene diphosphonate ((99m)Tc-HMDP) and (99m)Tc-Hexakis 2-methoxy-2-methylpropylisonitrile (MIBI) were performed between the 7th and 8th weeks after injection.

[Pediatric anesthetic during brain immaturity and neurodevelopment disorders].

Introduction: Several experimental and clinical studies suggest that drugs used in pediatric anesthesia may exert undesirable effects on the developing central nervous system. The objective of this review was to assess the results and conclusions of published studies on long lasting neurodevelopment disorders following exposure to anesthetics in children in a phase of brain immaturity.

Material And Methods: We performed a literature search in several sources (PubMed, SciELO and Cochrane Library) using the terms 'Pediatric anesthesia OR Pediatric anesthetic OR Developing brain anesthetic OR Developing brain anesthesia AND behavior disorders'.

Early mortality after neonatal surgery: analysis of risk factors in an optimized health care system for the surgical newborn.

Objective: Anesthetic and operative interventions in neonates remain hazardous procedures, given the vulnerability of the patients in this pediatric population. The aim was to determine the preoperative and intraoperative factors associated with 30-day post-operative mortality and describe mortality outcomes following neonatal surgery under general anesthesia in our center.

Methods: Infants less than 28 days of age who underwent general anesthesia for surgery during an 11-year period (2000 - 2010) in our tertiary care pediatric center were retrospectively identified using the pediatric intensive care unit database.

Predictors of major postoperative complications in neonatal surgery.

Objective: To investigate the incidence and severity of early postoperative complications and to identify their risk factors in newborns undergoing surgery under general anesthesia.

Methods: We conducted a retrospective analysis of data from 437 critically ill newborns undergoing surgery in a tertiary pediatric surgical center, between January 2000 and December 2010. Complications that occurred within the first 30 days after surgery were classified using the Clavien-Dindo system, for which grades III to V were considered severe.

Protective perioperative strategy using a third generation hydroxyethyl starch during surgery in a murine model of liver reperfusion injury.

Purpose: To investigate whether a third generation colloid, hydroxyethyl starch (HES 130/0.4), used for perioperative fluid therapy, protects the rat liver against the late-phase response of ischemia/reperfusion injury (IRI) and if inhibition of neutrophil hepatic infiltration plays a part in this mechanism.

Methods: Wistar rats were used (8 in each group).

Lasting developmental effects of neonatal fentanyl exposure in preweanling rats.

The present study aimed to determine whether neonatal treatment with fentanyl has lasting effects on stressed developing brain. Six-day-old rats were assigned to one of three groups (10 males/group): (1) fentanyl (incision+fentanyl), (2) saline (incision+0.9% saline), and (3) unoperated (unoperated sham).

[The effect of the quantitative variation of autologous spongy bone graft applied for bone regeneration in an experimental model of tibia osteotomy].

This study aimed at studying the influence of the quantitative variation of the autologous spongy bone graft on its osteogenic properties by virtue of the fact that its attainment has inconveniences of significant morbidity at local donor level and the limited quantity of grafting able to be obtained. Recourse was made to an osteotomy model for this purpose with the removal of a small 4 mm segment at the mid-diaphysis of the left tibia of twenty one sheep, stabilised by an osteosynthesis plate on which different quantities of autografting spongy bone were applied so that the referred bone defect (1) would not to be completely filled (1.5 g), (2) would be filled without any compression (3 g) and (3) would be filled with an excessive quantity (5 g) (n=5/each group).