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Full-Text Articles in Diseases

Genetic Determinants Of Cerebral Edema In Severe Traumatic Brain Injury: A Pilot Study Of The Role Of Cacna1 And Aqp4 Gene Mutations, Raphael A. Carandang, Susanne Muehlschlegel, Wiley R. Hall, Cynthia Ouillette, Robert H. Brown Jr. Dec 2012

Genetic Determinants Of Cerebral Edema In Severe Traumatic Brain Injury: A Pilot Study Of The Role Of Cacna1 And Aqp4 Gene Mutations, Raphael A. Carandang, Susanne Muehlschlegel, Wiley R. Hall, Cynthia Ouillette, Robert H. Brown Jr.

Dr Robert Brown

Cerebral edema is the one of the most significant predictors of poor outcome after traumatic brain injury. It is still unclear what the pathophysiological and cellular mechanisms and predictors of post-traumatic edema are. The exponential growth in genetic information has opened an avenue for investigation in traumatic brain injury and implicated specific genes in the pathophysiology of post-traumatic injury edema. Two examples are the Aquaporin-4 and CACNA1 genes, which respectively encode water and calcium channels. The Aquaporin-4 gene on chromosome 18q11.2-12.1 encodes the Aquaporin-4 protein (AQP4) water channel. AQP4 is one of the bidirectional high capacity water channels that is …


Neurosteroid-Mediated Regulation Of Brain Innate Immunity In Hiv/Aids: Dhea-S Suppresses Neurovirulence, Amber Paul, Ferdinand G. Maingat, Maria J. Polyak, Pornpun Vivithanaporn, Farshid Noorbakhsh, Samir Ahboucha, Glen B. Baker, Keir Pearson, Christopher Power Oct 2012

Neurosteroid-Mediated Regulation Of Brain Innate Immunity In Hiv/Aids: Dhea-S Suppresses Neurovirulence, Amber Paul, Ferdinand G. Maingat, Maria J. Polyak, Pornpun Vivithanaporn, Farshid Noorbakhsh, Samir Ahboucha, Glen B. Baker, Keir Pearson, Christopher Power

Publications

Neurosteroids are cholesterol-derived molecules synthesized within the brain, which exert trophic and protective actions. Infection by human and feline immunodeficiency viruses (HIV and FIV, respectively) causes neuroinflammation and neurodegeneration, leading to neurological deficits. Secretion of neuroinflammatory host and viral factors by glia and infiltrating leukocytes mediates the principal neuropathogenic mechanisms during, although the effect of neurosteroids on these processes is unknown. We investigated the interactions between neurosteroid mediated effects and lentivirus infection outcomes. Analyses of HIV-infected uninfected human brains disclosed a reduction in neurosteroid synthesis enzyme expression. Human neurons exposed to supernatants from HIV macrophages exhibited suppressed enzyme expression without …


The Plan Score, Gustavo Saposnik Sep 2012

The Plan Score, Gustavo Saposnik

Gustavo Saposnik

No abstract provided.


Magneto-Electric Nano-Particles For Non-Invasive Brain Stimulation, Kun Yue, Rakesh Guduru, Jeongmin Hong, Ping Liang, Madhavan Nair, Sakhrat Khizroev Sep 2012

Magneto-Electric Nano-Particles For Non-Invasive Brain Stimulation, Kun Yue, Rakesh Guduru, Jeongmin Hong, Ping Liang, Madhavan Nair, Sakhrat Khizroev

HWCOM Faculty Publications

This paper for the first time discusses a computational study of using magneto-electric (ME) nanoparticles to artificially stimulate the neural activity deep in the brain. The new technology provides a unique way to couple electric signals in the neural network to the magnetic dipoles in the nanoparticles with the purpose to enable a non-invasive approach. Simulations of the effect of ME nanoparticles for non-invasively stimulating the brain of a patient with Parkinson’s Disease to bring the pulsed sequences of the electric field to the levels comparable to those of healthy people show that the optimized values for the concentration of …


Intracerebral Hemorrhage In Cerebral Venous Thrombosis, Gustavo Saposnik Jun 2012

Intracerebral Hemorrhage In Cerebral Venous Thrombosis, Gustavo Saposnik

Gustavo Saposnik

No abstract provided.


Parkinson’S Disease: Molecular Mechanisms And Treatments, Delia Vahey Apr 2012

Parkinson’S Disease: Molecular Mechanisms And Treatments, Delia Vahey

Senior Honors Theses

Parkinson’s disease is a motor system disorder that is caused primarily by the loss of dopamine-producing brain cells. The most affected brain structure is the pars compacta of the substantia nigra. This area of the brain is essential to the control of voluntary movement, and so its impairment leads to symptoms such as tremors, rigidity, and impaired balance. The neuronal protein alpha-synuclein has been shown to be heavily involved in the pathogenesis of the disease at the cellular level. The currently available treatments for PD mainly target dopamine regulation, and there been no cure developed for the disease at present. …


Brazilian Longitudinal Study Of Adult Health (Elsa-Brasil): Objectives And Design., Paulo A. Lotufo Feb 2012

Brazilian Longitudinal Study Of Adult Health (Elsa-Brasil): Objectives And Design., Paulo A. Lotufo

Paulo A Lotufo

The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) aims to contribute relevant information with respect to the development and progression of clinical and subclinical chronic diseases, particularly cardiovascular diseases and diabetes. In this report, the authors delineate the study's objectives, principal methodological features, and timeline. At baseline, ELSA-Brasil enrolled 15,105 civil servants from 5 universities and 1 research institute. The baseline examination (2008-2010) included detailed interviews, clinical and anthropometric examinations, an oral glucose tolerance test, overnight urine collection, a 12-lead resting electrocardiogram, measurement of carotid intima-media thickness, echocardiography, measurement of pulse wave velocity, hepatic ultrasonography, retinal fundus photography, and an …


My Patient Has An Elevated Hs-Crp. What Does This Mean? What Should I Do Now, Maria Khan, Emmon Raza, Ayeesha Kamran Kamal Feb 2012

My Patient Has An Elevated Hs-Crp. What Does This Mean? What Should I Do Now, Maria Khan, Emmon Raza, Ayeesha Kamran Kamal

Section of Neurology

No abstract provided.


A Reappraisal In São Paulo, Brazil (2008) Of "The Ecology Of Medical Care:" The "One Per Thousand's Rule"., Adriana Roncoletta, Gustavo D. Gusso, Isabela M. Bensenor, Paulo A. Lotufo Jan 2012

A Reappraisal In São Paulo, Brazil (2008) Of "The Ecology Of Medical Care:" The "One Per Thousand's Rule"., Adriana Roncoletta, Gustavo D. Gusso, Isabela M. Bensenor, Paulo A. Lotufo

Paulo A Lotufo

This paper reassessed in Brazil, the concept of "Medical ecology" i introduced in 1961 to describe the relationship and utilization of health care services by a given population. This was a cross-sectional telephone survey among a random sample of people enrolled in a private HMO. We interviewed a random sample of non-pregnant adults over age 18 using 10 questions about symptoms and health care use during the month prior to interview. The final sample consisted of 1,065 participants (mean age 68 years, 68% female). From this sample, 424 (39.8%) reported the presence of symptoms, 311 (29.2%) had a medical office …


Hypothyroidism In The Elderly, Paulo A. Lotufo Jan 2012

Hypothyroidism In The Elderly, Paulo A. Lotufo

Paulo A Lotufo

An overview adressing observational and randomized clinical trials about hypothyroidism in the elderly.


Chronic Non-Communicable Diseases In Brazil: Priorities For Disease Management And Research, Bruce B. Duncan, Dora Chor, Estela M. Aquino, Isabela M. Bensenor, J.Geraldo Mill, M.Ines Schmidt, Paulo A. Lotufo, Alvaro Vigo, Sandhi M. Barreto Jan 2012

Chronic Non-Communicable Diseases In Brazil: Priorities For Disease Management And Research, Bruce B. Duncan, Dora Chor, Estela M. Aquino, Isabela M. Bensenor, J.Geraldo Mill, M.Ines Schmidt, Paulo A. Lotufo, Alvaro Vigo, Sandhi M. Barreto

Paulo A Lotufo

Chronic Non-Communicable Diseases are the main source of disease burden in Brazil. In 2011, the Brazilian Ministry of Health launched the Strategic Plan of Action for Management of Chronic Non-Communicable Diseases focusing on population-based interventions to manage cardiovascular diseases, diabetes, cancer, and chronic respiratory diseases mainly through fi ghting tobacco use, unhealthy diets, physical inactivity and the harmful use of alcohol. Although a signifi cant number of scientifi c studies on chronic diseases and their risk factors have been undertaken in Brazil, few are of cohort design. In this context, the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), a cohort …


Infectious Intracranial Aneurysms: Collaboration For Treatment Success, Erin M. Conahan Rn, Bsn, Cnrn Jan 2012

Infectious Intracranial Aneurysms: Collaboration For Treatment Success, Erin M. Conahan Rn, Bsn, Cnrn

Patient Care Services / Nursing

No abstract provided.


Investigating The Impact Of Cd147 And Its Expression On Neurodegenaration And Alzheimer's Disease (Ad), Limbikani J. Kanyenda Jan 2012

Investigating The Impact Of Cd147 And Its Expression On Neurodegenaration And Alzheimer's Disease (Ad), Limbikani J. Kanyenda

Theses: Doctorates and Masters

CD147, also known as basigin, extracellular matrix metalloproteinase inducer, neurothelin, tumour cell-derived collagenase stimulatory factor, M6, HT7, OX47 or gp42, is a transmembrane glycoprotein of the immunoglobulin super-family. It is expressed in many neuronal and non-neuronal tissues with high expression in the hippocampus, pre-frontal cortex, thyroid, heart, early erythroid, amygdala and placenta. This protein is involved in various cellular and biological functions such as lymphocyte migration and maturation, tissue repair, cancer progression, T and B lymphocyte activation and induction of extracellular matrix metalloproteinase. The CD147 protein interacts with with cyclophilin A, cyclophilin B, sterol carrier protein, caveolin-1 and integrins, and …


Bilateral Medial Medullary Infarction: A Systematic Review, Gustavo Saposnik Dec 2011

Bilateral Medial Medullary Infarction: A Systematic Review, Gustavo Saposnik

Gustavo Saposnik

No abstract provided.


Unmasking The Benefits Of B Vitamins In Stroke Prevention, Gustavo Saposnik Dec 2011

Unmasking The Benefits Of B Vitamins In Stroke Prevention, Gustavo Saposnik

Gustavo Saposnik

No abstract provided.