ABSTRACT
Traumatic brain injury (TBI) is one of the most severe problems of modern medicine that plays a dominant role in morbidity and mortality in economically developed countries. Our experimental study aimed to evaluate the histological and morphological changes occurring in the liver of adult and juvenile mildly traumatized rats (mTBI) in a time-dependent model. The experiment was performed on 70 adult white rats at three months of age and 70 juvenile rats aged 20 days. The mTBI was modelled by the Impact-Acceleration Model-free fall of weight in the parieto-occipital area. For histopathological comparison, the samples were taken on the 1st, 3rd, 5th, 7th, 14th, and 21st days after TBI. In adult rats, dominated changes in the microcirculatory bed in the form of blood stasis in sinusoidal capillaries and veins, RBC sludge, and adherence to the vessel wall with the subsequent appearance of perivascular and focal leukocytic infiltrates. In juvenile rats, changes in the parenchyma in the form of hepatocyte dystrophy prevailed. In both groups, the highest manifestation of the changes was observed on 5-7 days of the study. On 14-21 days, compensatory phenomena prevailed in both groups. Mild TBI causes changes in the liver of both adult and juvenile rats. The morphological pattern and dynamics of liver changes, due to mild TBI, are different in adult and juvenile rats.
Subject(s)
Brain Injuries, Traumatic , Liver/pathology , Age Factors , Animals , Brain Injuries, Traumatic/complications , Brain Injuries, Traumatic/pathology , Male , Rats , Rats, WistarABSTRACT
Introdução: Os colesteatomas são lesões císticas destrutivas que acometem qualquer área pneumatizada do osso temporal. Podem causar complicações intracranianas e extracranianas. Objetivo: Documentar os pacientes com otite média crônica colesteatomatosa complicada, que foram internados na enfermaria de otorrinolaringologia do Hospital das Clínicas de São Paulo, entre os anos de 2001 e 2008. Método: Estudo retrospectivo envolvendo 34 pacientes com otite média crônica colesteatomatosa complicada que foram internados na enfermaria de Otorrinolaringologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo no período de 2001 a 2008. Resultados: A idade dos pacientes variou de 7 a 83 anos, com predominância do sexo masculino (76%). As complicações extracranianas foram mais freqüentes do que as complicações intracranianas, e alguns pacientes apresentaram os dois tipos de complicação. Todos os pacientes receberam antibiótico endovenoso, e apenas um paciente não foi submetido a procedimento cirúrgico. Nenhum paciente foi a óbito, e no acompanhamento por seis meses não ocorreram seqüelas neurológicas incapacitantes. Conclusão: O tratamento precoce e agressivo das otites médias crônicas colesteatomatosas complicadas diminui a morbimortalidade da doença.
Introduction: Cholesteatomas are cystic destructive lesions that affect any pneumatized area of the temporal bone. They can cause intracranial and extracranial complications. Objective: To register the patients with complicated cholesteatomatous chronic otitis media, who were interned in the otorhinolaryngology nursing of the Clinical Hospital of São Paulo, between the years of 2001 and 2008. Method: Retrospective study involving 34 patients with complicated cholesteatomatous chronic otitis media, who had been otorhinolaryngology nursing in the Clinical Hospital of the Medicine College of the University of São Paulo, from 2001 through 2008. Results: The age of the patients ranged from 7 to 83 years, with predominance of the masculine sex (76%). The extracranial complications were more frequent than the intracranial complications, and some patients presented both types of complication. All the patients received endovenous antibiotic, and only one patient was not submitted to surgical procedure. No patient died, and in the six-month follow-up no incapacitating severe neurological sequels occurred. Conclusion: The precocious and aggressive treatment of the complicated cholesteatomatous chronic otitis media diminishes the disease morbimortality.
