Medical Specialties Commons^™

A Case Of Invasive Thymoma, Jon Geddes

The Medicine Forum

A 52 year-old man with a past medical history of an isolated seizure presented to the Veterans Affairs hospital complaining of weakness which was most prominent in the face and upper extremities. About 6 months prior to this admission he developed intermittent episodes of weakness when chewing and swallowing. He would often have to use his hands to close his jaw when eating or talking. He noticed that his voice had developed a nasal quality but he did not have slurred speech. He denied drooling, ptosis, cramping or muscle twitches. He was seen 6 months ago at another VA hospital …

Neurophysiological Impact And Modeling-Independent Elucidation Of Inactivation Pathways In A-Type K+ Channels, J.D. Fineberg, David Ritter, Manuel Covarrubias

Department of Molecular Physiology and Biophysics Faculty Papers

Poster presented at Society for Neuroscience

Abstract:

A-type voltage-gated K⁺ channels auto-regulate their function by undergoing fast inactivation. Independent of molecular mechanisms, this inactivation can proceed after channel opening (open-state inactivation, OSI) or from a closed state prior to opening (closed-state inactivation, CSI). We hypothesize that the specific neurophysiological roles of A-type Kv channels depend on whether they undergo OSI, CSI or both (CSI+OSI). To explore these possibilities, we introduced Markov kinetic schemes of the A-type Kv4 conductance into a computational model of the hippocamcal CA1 neuron assuming either CSI or CSI+OSI and compared the properties of the somatic …

Early Abnormal Sponteneous Activity Findings In Axonal Variant Of Guillain Barre Syndrome: Is This A New Variant Of Guillain Barre Syndrome?, Ghulam Shabbir Dr., Asad Ullah Dr., M.A. Lakhair Dr., Ali Majid Dr., Emran Rashid Dr.

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Acute Quadriparesis Due To Acute Demyelinating Polyneuropathy In A Patient Newly Diagnosed As Acase Of B -Cell Lymphoma- An Unusual Presentation. A Case Report With Review Of Literature, Anjum Akhtar, Sarwar Jamil Siddiqui

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Transfusion Therapy As A Sole Treatment Option In A Thalassemia Patient With Acute Paraplegia – A Case Report And Review Of Literature, Sana Rashid

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Are Robots Any Better In Stroke Rehabilitation?, Muhammad Faisal Wadiwala, Ayeesha Kamran Kamal

Department of Medicine

No abstract provided.

Neuro-Rehabilitation In The Developing World, Nirmal Surya Dr.

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Acute Quadriparesis Due To Acute Demyelinating Polyneuropathy In A Patient Newly Diagnosed As A Case Of B -Cell Lymphoma- An Unusual Presentation. A Case Report With Review Of Literature, Sardar M. Alam, Haroon Khan, Rafi Ud Din, Faiqa Filza, Tariq Khan

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

The Evolution Of Cranioplasty: A Review Of Graft Types, Storage Options And Operative Technique, Pooja Kanhya Lal, Muhammad Shahzad Shamim

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Pulmonary Complications In Patients With Severe Brain Injury., Kiwon Lee, Fred Rincon

Department of Neurology Faculty Papers

Pulmonary complications are prevalent in the critically ill neurological population. Respiratory failure, pneumonia, acute lung injury and the acute respiratory distress syndrome (ALI/ARDS), pulmonary edema, pulmonary contusions and pneumo/hemothorax, and pulmonary embolism are frequently encountered in the setting of severe brain injury. Direct brain injury, depressed level of consciousness and inability to protect the airway, disruption of natural defense barriers, decreased mobility, and secondary neurological insults inherent to severe brain injury are the main cause of pulmonary complications in critically ill neurological patients. Prevention strategies and current and future therapies need to be implemented to avoid and treat the development …

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 …

What Is Better Antiplatelet Agent To Prevent Recurrent Stroke?, Muhammad Faisal Wadiwala, Ayeesha Kamran Kamal

Department of Medicine

No abstract provided.

Morphological And Genetic Activation Of Microglia After Diffuse Traumatic Brain Injury In The Rat, Tuoxin Caou, Amanda M. Lisembee, Kelley D. Hall, James R. Pauly, Jonathan Lifshitz

Kaleidoscope

Traumatic brain injury (TBI) survivors experience long, term post-traumatic morbidities. In diffuse brain injured rats, a chronic sensory sensitivity to whisker stimulation models agitation in brain injury survivors and provides anatomical landmarks across the whisker-barrel circuit to evaluate traumatic neuropathology. As a consequence of TBI, acute and chronic microglial activation can contribute to degenerative and reparative events underlying post-traumatic morbidity. Here, we hypothesize that delayed microglial activation is concomitant with neuroplastic change after diffuse brain injury in the rat, by examining differential microglial activation states and neuroplasticity through gene and protein expression. Adult male, Sprague-Dawley rats were subjected to a …

Neurosurgical Applications Of Magnetic Resonance Diffusion Tensor Imaging, Daniel D. Hirsch, Bs, Benjamin M. Zussman, Bs, Adam E. Flanders, Md, Ashwini D. Sharan, Md

JHN Journal

Magnetic Resonance (MR) Diffusion Tensor Imaging (DTI) is a rapidly evolving technology that enables the visualization of neural fiber bundles, or white matter (WM) tracts. There are numerous neurosurgical applications for MR DTI including: (1) Tumor grading and staging; (2) Pre-surgical planning (determination of resectability, determination of surgical approach, identification of WM tracts at risk); (3) Intraoperative navigation (tumor resection that spares WM damage, epilepsy resection that spares WM damage, accurate location of deep brain stimulation structures); (4) Post-operative assessment and monitoring (identification of WM damage, identification of tumor recurrence). Limitations of MR DTI include difficulty tracking small and crossing …

Extending The Window For Thrombolysis In Acute Stroke., Muhammad Faisal Wadiwala,, Ayeesha Kamran Kamal

Department of Medicine

No abstract provided.

Undergraduate Neurosurgical Learning Opportunities At Jefferson, Leadership Committee Neurosurgery Student Interest Group

JHN Journal

On the evening of November 29, 2011, Jefferson’s Neurosurgery Interest Group (NSIG) hosted fourteen Jefferson Medical College students for a technical course entitled “Foundations in Neurosurgery” taught by Dr. Ashwini Sharan, Associate Professor of Neurosurgery and Director of the Division of Functional Neurosurgery, and Dr. Joshua Heller, Assistant Professor of Neurosurgery at Thomas Jefferson University Hospital. Additional instructors included Jefferson neurosurgery residents Rohan Chitale (PGY5), Chengyuan Wu (PGY4), and Karl Balsara (PGY2). Stryker MedED provided equipment, models, and instructors Ryan Dugan and Devin Opdendyk (Figure 1).

Complications Of Decompressive Craniectomy, Sandra Ho, Bs, Yinn C. Ooi, Md, Muhamad A. Sheikh, Mbbs, Mitchell Maltenfort, Phd, Jack Jallo, Md, Phd

JHN Journal

Introduction:

Persistent elevation of intracranial pressure (ICP), if untreated, may lead to brain ischemia or lack of brain oxygen and even brain death.1-6,10 When standard treatments for elevated ICP are exhausted without any signs of improvement, decompressive craniectomy can be an effective alternative solution.7,19 Decompressive craniectomies (DC) have been used as a method of controlling intracranial pressure in patients with cerebral edema secondary to cerebral ischemia, subarachnoid hemorrhage (SAH), and traumatic brain injury (TBI), among others. 8-10 Several studies over the years have demonstrated the efficacy of this procedure.7-9,11,35,36 However, consensus is still lacking in the utility of DC as …

Fractionated Stereotactic Radiosurgery Alone For The Treatment Of A Papillary Craniopharygioma, Tyler J. Kenning, Md, James J. Evans, Md

JHN Journal

The use of radiation treatment (RT) is usually reserved for residual or recurrent craniopharyngiomas, and the role of RT alone and not as an adjunctive therapy to surgery has not been clearly defined. The authors describe a case of a 50-year-old man presenting with a large suprasellar craniopharyngioma with extension into the third ventricle, producing acute hydrocephalus. A ventriculoperitoneal shunt was performed concurrently with an endoscopic biopsy. Treatment with fractionated stereotactic radiosurgery (FSR) resulted in near resolution of the lesion with no evidence of recurrence over six years. A review of RT for the treatment of craniopharyngiomas without surgical resection …

Diagnostic Potential Of The Nmda Receptor Peptide Assay For Acute Ischemic Stroke, Svetlana A. Dambinova, Kerstin Bettermann, Theodore Glynn, Matthew Tews, David Olsen, Joseph D. Weissman, Richard K. Sowell

Faculty Articles

Background

The acute assessment of patients with suspected ischemic stroke remains challenging. The use of brain biomarker assays may improve the early diagnosis of ischemic stroke. The main goal of the study was to evaluate whether the NR2 peptide, a product of the proteolytic degradation of N-methyl-D-aspartate (NMDA) receptors, can differentiate acute ischemic stroke (IS) from stroke mimics and persons with vascular risk factors/healthy controls. A possible correlation between biomarker values and lesion sizes was investigated as the secondary objective.

Methods and Findings

A total of 192 patients with suspected stroke who presented within 72 h of symptom onset …

Neurosurgical Electives: Operating Room Survival Guide, M Shahzad Shamim, Zain A. Sobani

Section of Neurosurgery

No abstract provided.

Large Vessel Atherosclerotic Infarction And Headache, Farhad Iranmanesh, Faranak Gadari

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Migrainous Vertigo And Pseudovertigo In Migraine Without Aura, At A Headache Clinic, Lnam-E -Khuda, Mohammad Abdullah, Ismail A. Khatri

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Diffusion Tractography In Spinal Cord Injury: Preliminary Experience, Vikas Bhattia, R.G Sood, Sanjiv Sharma, Prashant Panda

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Long-Term Effect Of Carotid Surgery In Asymptomatic Stenosis., Muhammad Faisal Wadiwala, Ayeesha Kamran Kamal

Department of Medicine

No abstract provided.

Vitamin D Deficiency In Parkinsons Disease Patients At A Tertiary Care Center In Karachi, Pakistan, Adnan Yousuf, Sarwar Jamil Siddiqui, Iqbal Azam, Mohammad Wasay

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Psychiatry, Haider A. Naqvi Dr.

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Limitations Of F-18 Fog Pet/Ct In Excluding Bilateral Palatine Tonsillar Metastases, Allen Missoi, Amolak Singh

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Neurosurgery, Muhammad Mehboob Alam Dr.

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Neurology Curriculum For Medical Students In Pakistan – Scope And Priorities, Ismail A. Khatri, Maimoona Siddiqui

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Neuroradiology, Zafar Sajjad

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.