Publications by authors named "Mallette S"

Objective: In this investigation, we reported the increase in emergency department and inpatient admission cases during the month of November 2012 post Hurricane Sandy as compared with baseline (November 2010, 2011, and 2013) for elderly patients aged 65 and up.

Methods: Medical claims data for patients aged 65 and over treated at emergency department and inpatient health care facilities in New Jersey were analyzed to examine the surge in frequencies of diagnoses treated immediately following Hurricane Sandy. The differences were quantified using gap analysis for 2 years before and 1 year after the event.

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The Integrative Clinical Preceptor Model was designed to provide a framework for undergraduate clinical education in community health nursing. The model is based on reciprocal collaboration between students, preceptors, and faculty. Implementation of the model has resulted in individualized, population-focused experiences for students based on the principles of service-learning, empowered preceptors who are able to increase their scope of service, and increased productivity for the faculty in research and scholarship.

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The intracellular signaling mechanisms that mediate basic fibroblast growth factor (bFGF)-induced angiogenesis have not been fully identified. In particular, whether activation of the intracellular enzyme protein kinase C (PKC) is necessary or sufficient for bFGF-induced mitogenesis of human endothelial cells is not clear. Accordingly, the effect of bFGF stimulation on the Ca2+ increase and PKC activity of normal human endothelial cells (HEC) was studied, as was the effect of inhibition of PKC and the distribution of PKC isoenzymes in these cells.

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Inhibitors of the production of endogenous angiotensin II (A-II) can diminish the hyperplastic response produced by arterial injury in animals; however, a similar effect in humans has not been observed. To explain this discrepancy, we compared the effect of A-II on rat aortic smooth muscle cells (R-SMC) and smooth muscle cells derived from human saphenous veins (H-SMC). A-II (10-1000 nM) significantly increased the proliferative rate of R-SMC incubated in 10% serum, but a similar effect was not observed with H-SMC.

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We evaluated the imaging capability of murine Tc-99m-labeled antimelanoma Fab fragments in 12 patients with clinical stage II and III melanoma. Tc-99m-NRX118.7 antimelanoma Fab fragment, 10.

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To find a treatment that may be effective against micrometastases of advanced, stage III or IV neuroblastoma, [125I]metaiodobenzylguanidine (125I-MIBG) was used in a phase I toxicity trial. In seven patients, thrombocytopenia was encountered with absorbed whole body doses of 85-135 rad from 125I-MIBG, but the dosimetry was imprecise in predicting bone marrow injury. Three patients survived for over one year, results that may indicate efficacy of 125I-MIBG therapy.

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Positron emission tomography in combination with the newly introduced catecholamine analogue [11C]hydroxyephedrine ([11C]HED) enables the noninvasive delineation of sympathetic nerve terminals of the heart. To address the ongoing controversy over possible reinnervation of the human transplant, 5 healthy control subjects and 11 patients were studied after cardiac transplant by this imaging approach. Regional [11C]HED retention was compared to regional blood flow as assessed by rubidium-82.

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Three children with Stage III neuroblastoma were treated with [125I]MIBG in a phase I toxicity study. Concepts of the treatment were: in small tumors, the absorbed dose of radiation from MIBG labeled with 131I is reduced but the absorbed dose from [125I]MIBG is less affected; and many recurrences of neuroblastoma arise from small tumors. Two patients exhibited only modest thrombocytopenia and leukopenia, the most sensitive indices of radiation toxicity, after receiving 261 and 407 mCi, and 83 and 104 rad of whole-body radiation.

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A low protein dose (73 +/- 10 micrograms total) 131I-labeled monoclonal antibody cocktail made of equal microgram quantities of 225.28S (IgG2a) and 763.24T (IgG1) murine monoclonal antibodies, which bind additively to a high molecular weight antigen of melanoma, was evaluated as a lymphoscintigraphic agent in 17 patients with intermediate to thick (mean Breslow depth, 3.

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A protocol for calculating radiation absorbed dose to pheochromocytoma tumors during treatment with 131I-labeled metaiodobenzylguanidine (MIBG) is described. The technique calls for (a) obtaining tumor volumes from Computed Tomography and/or Magnetic Resonance Imaging, (b) computing energy absorbed by assuming complete beta-particle absorption and a standard shape for gamma-ray absorption and (c) scaling from tracer to therapy dose rate by the ratio of administered activities. Also a 131I time-activity curve is obtained from planar, Anger-camera, conjugate-view images of the tumor and a known-strength source, both over a series of days.

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Iodine-131 metaiodobenzylguanidine [131I]MIBG has proven to be an effective radiopharmaceutical for the scintigraphic localization of pheochromocytomas. Uptake of MIBG is inhibited by blockade of the neuronal uptake pathway for catecholamines ("uptake-1") and by depletion of catecholamine storage vesicle contents, but is not significantly affected by conventional alpha- and beta-adrenoreceptor blocking drugs. Labetalol is an antihypertensive agent with combined alpha- and beta-blocking properties that has been used to manage patients with suspected pheochromocytomas.

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Toxic effects from 131I-meta-iodobenzylguanidine (131I-MIBG) treatments of neuroblastoma in six patients were recorded. The toxicity was largely confined to the hematologic system where circulating leukocytes and platelets regularly declined after each dose of 131I-MIBG; the values reached nadirs between three and seven weeks and recovered slowly over subsequent weeks. Prior bone marrow transplantation and infiltration of bone marrow by neuroblastoma appeared to make the hematologic system more vulnerable to the radiation.

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Metaiodobenzylguanidine (MIBG) localizes in adrenergic neurons; MIBG labeled with 123I then serves as an analog of norepinephrine, and concentrations of [123I]MIBG reflect sites of adrenergic neurons in organs. Movements of [123I]MIBG into and out of organs were measured by quantitative scintigraphy in man. We perturbed adrenergic neuron function in several ways, and [123I]MIBG concentrations in the heart were subsequently altered in patterns consistent with the concept that [123I]MIBG resides mostly in adrenergic neurons.

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The handling of radiolabeled meta-iodobenzylguanidine (MIBG) by salivary glands was evaluated. In the submaxillary glands of rats, the uptake of 125I-MIBG was decreased after 1) nerve injury induced by 6-hydroxydopamine, 2) inhibition of the uptake-1 pathway by desmethylimipramine, and 3) surgical denervation. However, the reduction in 125I-MIGB uptake was less than that of 3H-norepinephrine (3H-NE) and of the endogenous content of NE in the glands.

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Instillation of [32P]chromic phosphate to cystic brain tumors was performed in six patients. Three patients had craniopharyngioma, two had Grade IV astrocytoma and one had Grade II astrocytoma. The cyst volumes ranged from 2 to 44 cc.

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Ten patients with histologically proven neuroblastoma were studied by [131I]MIBG scintigraphy. Tumor uptake of the radiopharmaceutical showed a spectrum varying from no uptake in one case, to slight uptake in two, moderate uptake in two and intense uptake in five cases. Iodine-131 MIBG scintigraphy was more effective in demonstrating the extent of neuroblastoma spread than were conventional bone scan and CT in one patient, equal to these modalities in four cases, almost equal in two cases and significantly inferior in three cases.

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Between January 1947 and June 1983, 511 patients were given treatment doses of I-131 after surgery for thyroid cancer in the presence of I-131 uptake in thyroid remnants. Thirty-four patients were removed from the study leaving 462 patients with a 99% follow-up at 1 or more yr, with a mean follow-up of 15 yr. Of 267 patients with radioiodine uptake confined to the thyroid bed, 233 (87%) had ablation from the first dose of I-131 ranging from 100 to greater than 200 mCi.

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