Abstract
Beta-adrenergic antagonists have demonstrated beneficial effects in tumor progression and survivability in patients with various cancers by inhibiting norepinephrine-induced tumor cell migration. However, little is known about their effects on the outcomes of metastatic brain tumors (MBTs). This study was undertaken to evaluate the effects of beta-blockers, if any, on the outcome of MBTs, and their possible role in controlling tumor progression and survivability. A retrospective cohort analysis of 225 patients identified as having MBTs presenting to our institution from 2001 through 2013 was conducted by reviewing electronic patient records. Patients were categorized into three groups: Group A comprised hypertensives on beta-blockers only (40, 18%), Group B comprised hypertensive patients on antihypertensive medications other than beta-agonists (65, 29%), and Group C comprised normotensives (120, 53%). All outcomes were compared using the data on pre - and post-gamma knife radiosurgery (GKRS) for these groups. One-way analysis of variance (ANOVA) was used to compare the radiological and clinical outcomes in the patient population following beta-blockers usage in Group A versus groups B and C. Cox regression model was used to de...Continue Reading
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