ABSTRACT
Choline - now recognized as an essential nutrient - is the most common polar group found in the outer leaflet of the plasma membrane bilayer. Brain ischemia-reperfusion causes lipid peroxidation triggering multiple cell death pathways involving necrosis and apoptosis. Membrane breakdown is, therefore, a major pathophysiologic event in brain ischemia. The ability to achieve membrane repair is a critical step for survival of ischemic neurons following reperfusion injury. The availability of choline is a rate-limiting factor in phospholipid synthesis and, therefore, may be important for timely membrane repair and cell survival. This work aimed at verifying the effects of 7-day oral administration with different doses of choline on survival of CA1 hippocampal neurons following transient global forebrain ischemia in rats. The administration of 400 mg/kg/day divided into two daily doses for 7 consecutive days significantly improved CA1 pyramidal cell survival, indicating that the local availability of this essential nutrient may limit postischemic neuronal survival.
Subject(s)
Brain Ischemia/drug therapy , Choline/administration & dosage , Neurons/drug effects , Neuroprotective Agents/administration & dosage , Administration, Oral , Animals , Apoptosis/drug effects , CA1 Region, Hippocampal/cytology , CA1 Region, Hippocampal/drug effects , CA1 Region, Hippocampal/metabolism , Cell Survival/drug effects , Dose-Response Relationship, Drug , Lipid Peroxidation/drug effects , Male , Neurons/cytology , Rats , Rats, WistarABSTRACT
We observed inpatients with the diagnosis of ischemic stroke hospitalized at least 24 hours. We investigated the reasons for early or late arrival to the Emergency Room, the time span from arrival to computed tomography (CT) scanning, factors associated to hospitalization time, and patients outcome. We concluded that people who are cared for by São Paulo Hospital now get to the hospital sooner than they did 3 years ago (47% arrived in 3 hours or less) and that the patient flow inside the hospital became much faster, once any stroke patient is considered now a medical emergency by the hospital staff. Infections were the main complications presented by our patients, which is leading us to optimize protocols to improve emergency care by all the staff.
Subject(s)
Brain Ischemia/diagnosis , Emergency Service, Hospital/standards , Hospitals, University , Stroke/diagnosis , Acute Disease , Brain Ischemia/therapy , Cross-Sectional Studies , Emergency Service, Hospital/statistics & numerical data , Female , Humans , Length of Stay , Male , Risk Factors , Stroke/therapy , Time Factors , Tomography, X-Ray ComputedABSTRACT
Foram caracterizados os pacientes com diagnóstico de acidente vascular cerebral (AVC) isquêmico internados por período superior a 24 horas. Investigamos os fatores que influenciam a chegada precoce ou tardia do paciente ao pronto socorro, o intervalo de tempo entre a chegada e a realização de tomografia computadorizada (TC), os fatores que influenciam na permanência destes pacientes no hospital e o seu destino. Concluímos que a população atendida pelo Hospital São Paulo tem chegado ao hospital mais precocemente que há 3 anos (47 por cento chegaram nas primeiras 3 horas de instalação) e que o fluxo interno do paciente ficou muito mais rápido, uma vez que o AVC é considerado emergência médica pela equipe de saúde. As principais complicações apresentadas pelos pacientes foram infecciosas e nos direcionam à proposta de implementação de protocolos para a melhoria aos cuidados que devem ser prestados pelos profissionais de saúde.
