Medical Specialties Commons^™

Molecular Functionalization Of Carbon Nanotubes And Use As Substrates For Neuronal Growth, Mark P. Mattson, Robert C. Haddon, Apparao M. Rao

Sanders-Brown Center on Aging Faculty Patents

A cell and substrate system and nerve regeneration implant are disclosed including a carbon nanotube and a neuron growing on the carbon nanotube. Both unfunctionalized carbon nanotubes and carbon nanotubes functionalized with a neuronal growth promoting agent may be utilized in the invention. A method is also disclosed for promoting neuronal growth.

Uncertainty And The Value Of Diagnostic Information With Application To Axillary Lymph Node Dissection In Breast Cancer, Giovanni Parmigiani

Johns Hopkins University, Dept. of Biostatistics Working Papers

In clinical decision making, it is common to ask whether, and how much, a diagnostic procedure is contributing to subsequent treatment decisions. Statistically, quantification of the value of the information provided by a diagnostic procedure can be carried out using decision trees with multiple decision points, representing both the diagnostic test and the subsequent treatments that may depend on the test's results. This article investigates probabilistic sensitivity analysis approaches for exploring and communicating parameter uncertainty in such decision trees. Complexities arise because uncertainty about a model's inputs determines uncertainty about optimal decisions at all decision nodes of a tree. We …

Optimization Of Breast Cancer Screening Modalities, Yu Shen, Giovanni Parmigiani

Johns Hopkins University, Dept. of Biostatistics Working Papers

Mathematical models and decision analyses based on microsimulations have been shown to be useful in evaluating relative merits of various screening strategies in terms of cost and mortality reduction. Most investigations regarding the balance between mortality reduction and costs have focused on a single modality, mammography. A systematic evaluation of the relative expenses and projected benefit of combining clinical breast examination and mammography is not at present available. The purpose of this report is to provide methodologic details including assumptions and data used in the process of modeling for complex decision analyses, when searching for optimal breast cancer screening strategies …

Interleukin-10 And Pathogenesis Of Murine Ocular Toxoplasmosis, Fangli Lu, Shiguang Huang, Lloyd H. Kasper

Dartmouth Scholarship

To understand the role of interleukin-10 (IL-10) in ocular toxoplasmosis, we compared C57BL/6 (B6) and BALB/c background mice lacking a functional IL-10 gene (IL-10(-/-)) and B6 transgenic mice expressing IL-10 under the control of the IL-2 promoter. Increased cellular infiltration and necrosis were observed in the eye tissue of IL-10(-/-) mice of both the B6 and BALB/c backgrounds with associated changes in the levels of cytokines in serum. In contrast, there was no evidence of necrosis in the eye tissue from IL-10 transgenic mice following parasite exposure. Our results demonstrate that IL-10 is important in the regulation of inflammation during …

Determinants Of Satisfaction With An Automated Alcohol Evaluation Program., Daniel Z Lieberman

Psychiatry and Behavioral Sciences Faculty Publications

High rates of untreated mental illness cause serious health problems in the United States and worldwide. The use of computer-administered therapy has the potential to increase access to mental health care for certain patient populations. An online version of an alcohol check-up was developed that guided subjects through a series of standardized questionnaires, and provided them with feedback designed to enhance their appreciation of the negative aspects of their alcohol use. Ratings of the helpfulness of the questionnaires were evaluated in order to determine the characteristics of individuals who would potentially benefit from an automated substance abuse intervention, and to …

Linda Lê : Schizo-Positive?, Isabelle Favre

Présence Francophone: Revue internationale de langue et de littérature

In her novel entitled "Calomnies", Linda Lê depicts a "mad uncle" and a young female writer fascinated with her uncle’s marginality. In this book, Lê presents a complex view of schizophrenia. Sometimes, the actions and thoughts of the uncle are reminiscent of Deleuze and Guattari’s concepts such as le corps sans organe and la machine célibataire. Some other times however, Lê pays attention to the past of the uncle and shows how, in Vietnam, he witnessed the hypocrisy of his family during the war. These passages are then closer to Laing’s theories, since the environment and conditions in which he …

Status Epilepticus In Children: A Five-Year Experience At Aga Khan University Hospital, S H. Ibrahim, M A. Yezdan, S Q. Nizami

Department of Paediatrics and Child Health

Objective: Status epilepticus is an under diagnosed entity in Pakistan. It is a potentially reversible condition but has a high mortality, if it is not recognized and managed on time. The purpose of this study was to determine the clinical profile and the relationship of mortality of status epilepticus with its known risk factors.
Methods: This was a retrospective study. Medical records of all the patients admitted in the last five years (1998-2002) with a diagnosis of status epilepticus (ICDcode 345.30, 345.31) were reviewed. Data was recorded on a Performa and analyzed by using the statistical programme SPSS, chi square …

Neurological Care In Pakistan: Actions Are Needed, M. Wasay

Department of Medicine

No abstract provided.

Socio-Economic And Diagnostic Aspects Of Tuberculosis In Pakistan, Saba Sohail

Department of Radiology

No abstract provided.

Determinants Of Balance Confidence In Community-Dwelling Elderly People, Janine Hatch, Kathleen M. Gill-Body, Leslie G. Portney

All PTHMS Faculty Publications

Background and Purpose. The fear of falling can have detrimental effects on physical function in the elderly population, but the relationship between a persons' confidence in the ability to maintain balance and actual balance ability and functional mobility is not known. The extent to which balance confidence can be explained by balance performance, functional mobility, and sociodemographic, psychosocial, and health-related factors was the focus of this study.

Subjects. The subjects were 50 community-dwelling elderly people, aged 65 to 95 years (X̄=81.7, SD=6.7).

Methods. Balance was measured using the Berg Balance Scale. Functional mobility was measured using the Timed Up & …

Oncolog, Volume 48, Number 12, December 2003, Karen Stuyck, Dawn Chalaire, Martha A. Askins Phd, Martha Aschenbrenner

OncoLog MD Anderson's Report to Physicians (All issues)

• On the Move: Efforts Under Way to Improve Outcomes for Patients with Renal Cancer
• Protocols: Studies Examine Treatments for Renal Cell Carcinoma
• Art Therapy Helps Children Affected by Cancer Express Their Emotions
• Children's Art Project Has Been Improving the Lives of Children with Cancer for 30 Years
• DiaLog: When a Parent Is Sick: Talking to Children about Cancer, by Martha A. Askins, PhD, Division of Pediatrics, and Martha Aschenbrenner, Director, Child Life Services

Measured Effects Of Rapid Palatal Expansion On Nasal Cavity Volume Utilizing Cbct, Jon Neal Robinson

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to evaluate and predict the expected changes that occur in the nasal cavity volume following rapid palatal expansion. Eighteen subjects (11 female, 7 male), ages 9 to 18, requiring rapid palatal expansion in conjunction with comprehensive orthodontic treatment, were selected for the study. Rapid palatal expansion was accomplished using the standard, banded hyrax appliance. Three-dimensional cone beam computed tomograms using the NewTom 9000™ were acquired before and after expansion. Serial coronal slices of the nasal cavity were made using the QV9000™ software program. The resultant serial images were imported into 3-D Doctor™ for analysis …

The Histological Effects Of Mandibular Distraction Osteogenesis On Rabbit Condyles, Eunice Jungmin Hong

Loma Linda University Electronic Theses, Dissertations & Projects

The present study is a histological evaluation of condyles taken from rabbits that underwent either a midline or paramedian distraction osteogenesis procedure on the mandibles. Fifteen rabbits were originally operated on and eight of these fifteen successfully made it through both the distraction osteogenesis procedure and the 1 month holding period that followed. There was one control animal.

In the present study, the condyles from these nine rabbits (1 control, 2 midline distraction osteogenesis, 6 paramedian distraction osteogenesis) were prepared for histological evaluation (18 total). Step serial sections were cut along the coronal plane and the sections from the anterior …

Spectrum Of Complications And Mortality Of Bacterial Meningitis: An Experience From A Developing Country, M. A. Rabbani, A. A. Khan, S. S. Ali, B. Ahmad, Mohammad Asim Beg, M. A. Khan, Mohammad Wasay

Department of Medicine

Objective:

The aim of this study was to obtain data on predisposing factors, causative organisms and their associated mortality and complications related to acute bacterial meningitis.

Methods:

The chart review of all patients in whom acute bacterial meningitis was diagnosed at The Aga Khan University Hospital from January 1995 through December 2001.

Results:

One hundred ninety-four patients were included in study. There were 146 males and 48 females. The mean age of our study population was 41±12.3 years. One hundred and ninety (97.9%) patients had community acquired meningitis; only 4 (2.0%) patients developed meningitis nosocomially. The two most common predisposing …

Ischemic Stroke Subtypes In Pakistan: The Aga Khan University Stroke Data Bank, N. A. Syed, B. A. Khealani, S. Ali, A. Hasan, H. Brohi, T. Mozaffar, N. Ahmed, A. Hameed, S. M. Baig, M. Wasay

Department of Medicine

Objective: Frequency of ischemic stroke subtypes is influenced by ethnic and geographic variables. Our objective was to identify various stroke subtypes and its determinants at a tertiary care hospital.

Methods: We prospectively collected data on ischemic stroke subtypes admitted to The Aga Khan University Hospital in Karachi.

Results: A total of 596 patients were enrolled in 22 months in the Aga Khan Universtiy Stroke Registry. These included 393 patients with Ischemic stroke, 126 patients with intracerebral hemorrhage, 50 patients with subarachnoid hemorrhage and others. The ischemic stroke group was classified according to the TOAST criteria and comprised of lacunar 168/393 …

Patterns Of Breast Recurrence In A Pilot Study Of Brachytherapy Confined To The Lumpectomy Site For Early Breast Cancer With Six Years' Minimum Follow-Up, Francisco Perera, Edward Yu, Jay Engel, Ronald Holliday, Leslie Scott, Frank Chisela, Varagur Venkatesan

Edward Yu

PURPOSE: In this pilot study of high-dose-rate brachytherapy to the lumpectomy site as the sole radiation, ipsilateral and contralateral breast recurrences are documented with specific attention to the location of recurrence relative to the lumpectomy site. METHODS: Between March 1992 and January 1996, 39 patients with T1 (32 patients) and T2 breast cancers received 37.2 Gy in 10 fractions (b.i.d.) over 1 week prescribed to a volume encompassing the surgical clips. Thirteen received adjuvant tamoxifen, and 4 received chemotherapy. Follow-up included annual bilateral mammograms and clinical breast examination every 3 to 6 months. Whereas 13 patients had intraoperative implantation of …

Amygdala Hyperreactivity In Borderline Personality Disorder: Implications For Emotional Dysregulation, Nelson H. Donegan, Charles A. Sanislow, Hilary P. Blumberg, Robert K. Fulbright, Cheryl Lacadie, Pawel Skudlarski, John C. Gore, Ingrid R. Olson, Thomas H. Mcglashan, Bruce E. Wexler

Charles A. Sanislow, Ph.D.

BACKGROUND: Disturbed interpersonal relations and emotional dysregulation are fundamental aspects of borderline personality disorder (BPD). The amygdala plays important roles in modulating vigilance and generating negative emotional states and is often abnormally reactive in disorders of mood and emotion. The aim of this study was to assess amygdala reactivity in BPD patients relative to normal control subjects. We hypothesized that amygdala hyperreactivity contributes to hypervigilance, emotional dysregulation, and disturbed interpersonal relations in BPD.

METHODS: Using functional magnetic resonance imaging, we examined neural responses to 20-sec blocks of neutral, happy, sad, and fearful facial expression (or a fixation point) in 15 …

Medical Education Digest, Vol. 5 No. 6 (November 15, 2003), Nova Southeastern University

Medical Education Digest

No abstract provided.

Decreasing Barriers For Teens: Evaluation Of A New Teenage Pregnancy Prevention Strategy In School-Based Clinics, Abbey C. Sidebottom, Amanda Birnbaum, Sarah S. Nafstad

Department of Public Health Scholarship and Creative Works

Sidebottom et al seek to evaluate the effects of the change in distribution systems on students' receipt of requested contraceptives and demand for contraceptive school-based clinics (SBC). The result of the study reveals that the average number of requests per student was higher under the voucher system, possibly as a consequence of expires vouchers resulting in repeated requests. The findings also suggest that SBCs could go a step further in reducing adolescents' barriers to accessing contraceptives by adopting an on-site direct delivery system..

Giant Choroid Plexus Papilloma Of The Third Ventricle, Ashfaq A. Razzaq, Khalid N. Chishti

Section of Neurosurgery

Abstract are not provided by the author/publisher

Presentation Of Allergen In Different Food Preparations Affects The Nature Of The Allergic Reaction—A Case Series, K. E. C. Grimshaw, R. M. King, J. A. Nordlee, S. L. Hefle, John O. Warner, J. O.'B. Hourihane

Department of Food Science and Technology: Faculty Publications

Background: Characterization of fatal and nonfatal reactions to food indicates that the majority of reactions are due to the ingestion of prepared foods rather than the nonprocessed allergen. In an ongoing study that used a double-blind placebo-controlled food challenge to investigate peanut allergy and clinical symptoms, the observed reaction severity in four of the first six subjects was greater than anticipated. We hypothesized that this was due to differences in the composition of the challenge vehicle. Objective: The aim was to investigate whether the severity of observed challenge reactions would be repeated on rechallenge with a lower fat challenge vehicle. …

Oncolog, Volume 48, Number 11, November 2003, Sunni Hosemann, Don Norwood

OncoLog MD Anderson's Report to Physicians (All issues)

• Laparoscopy Shows a Benefit in a Growing Number of Oncologic Procedures
• Collaboration and Creativity Lead to a New Approach to Spinal Surgery
• Protocols: Studies Test New Surgical Procedures
• House Call: Telling Fact from Fiction on the Internet

Situs Ambiguous, Saba Sohail, Mukhtiar Ahmed Memon, Allah Rakhiyo

Department of Radiology

The case of a female child is described who presented with recurrent respiratory infections and "recurrent right subphrenic abscess." Detailed radiological work-up identified situs ambiguous abdominis with bronchiectasis, duodenal malrotation, umbilical hernia and spina bifida.

Midazolam And Thiopentone Co-Induction: Looking For Improvement In Quality Of Anaesthesia, M A. Khan, F A. Khan

Department of Anaesthesia

Objective: To evaluate improvement in quality of anaesthesia induction using thiopentone and midazolam for co-induction of anaesthesia. An additional end point was taken as loss of response to a tetanic stimulation (50 Hz) delivered for 5 seconds after the loss of verbal contact and eyelash reflex.Methods: Ninety ASA I and II patients, within the age range of 20-60 years were studied. Patients were randomly divided into three equal groups; A, B and group C.Results: Onset of induction and loss of response to a tetanic stimulation was achieved earlier in group B as compared to the other study groups (p < 0.05).CONCLUSION: Co-induction with midazolam 0.02 mg x kg(-1) followed by thiopentone 3 mg x kg(-1) was superior to other two groups. Induction of anaesthesia in this group was found to be smoother and faster, provided better hemodynamic stability, better airway maintenance and with lesser incidence of untoward effects.

Comparison Of Double Disc And Combined Disc Method For The Detection Of Extended Spectrum Beta Lactamases In Enterobacteriaceae, K Jabeen, A Zafar, R Hasan

Department of Pathology and Laboratory Medicine

Objective:
To compare double disc approximation and combined disc method for their ability to detect extended spectrum b lactamase (ESBL) production in enterobacteriaceae and determine the percentage of isolates which are falsely reported as sensitive in absence of ESBL detection, in a clinical microbiology laboratory of a tertiary care hospital between September-October 2002.
Methods:
Selected isolates were identified according to standard biochemical tests. Disc susceptibility tests were performed according to NCCLS. ESBL detection by combined disc [cefotaxime (30 ug) versus cefotaxime plus clavulanate (30+10 ug)] was compared with detection using double discs [amoxy-clavulanic acid (20+10 ug) and aztreonam (30 ug) …

Shifting From Hypofractionated To "Conventionally" Fractionated Thoracic Radiotherapy: A Single Institution's 10-Year Experience In The Management Of Limited-Stage Small-Cell Lung Cancer Using Concurrent Chemoradiation, Gregory Videtic, Pauline Truong, A. Dar, Edward Yu, Larry Stitt

Edward Yu

PURPOSE: To perform a retrospective review of a single institution's 10-year experience in treating limited-stage small-cell lung cancer (LS-SCLC) with a concurrent chemoradiation regimen modeled after the experimental arm of a randomized National Cancer Institute of Canada trial in which hypofractionated radiotherapy started with cycle 2 of chemotherapy. We then looked at the impact on patient outcomes of changing the RT during the course of the decade to a "conventionally" (2 Gy) fractionated regimen, with a focus on toxicity and survival rates. METHODS AND MATERIALS: Between 1989 and 1999, 215 LS-SCLC patients received six cycles of chemotherapy consisting of cyclophosphamide, …

The Natural Course Of Bulimia Nervosa And Eating Disorder Not Otherwise Specified Is Not Influenced By Personality Disorders, Carlos M. Grilo, Charles A. Sanislow, M. Tracie Shea, Andrew E. Skodol, Robert L. Stout, Maria E. Pagano, Shirley Yen, Thomas H. Mcglashan

Charles A. Sanislow, Ph.D.

Objective: To examine prospectively the natural course of bulimia nervosa (BN) and eating disorder not otherwise specified (EDNOS) and to test the effects of personality disorder (PD) comorbidity on the outcomes.

Method: Ninety-two female patients with current BN (N ¼ 23) or EDNOS (N ¼ 69) were evaluated at baseline enrollment in the Collaborative Longitudinal Personality Disorders Study (CLPS). Eating disorders (EDs) were assessed with the Structured Clinical Interview for DSM-IV Axis I Disorders. Personality disorders (PDs) were assessed with the Diagnostic Interview for DSM-IV PD (DIPD-IV). The course of BN and EDNOS was assessed with the Longitudinal Interval Follow-up …

Clinical Features And Impairment In Women With Borderline Personality Disorder (Bpd) With Post-Traumatic Stress Disorder (Ptsd), Bpd Without Ptsd, And Other Personality Disorders With Ptsd, Caron Zlotnick, Dawn M. Johnson, Shirley Yen, Cynthia Battle, Charles A. Sanislow, Andrew E. Skodol, Carlos M. Grilo, Thomas H. Mcglashan, John G. Gunderson, Donna S. Bender, Mary C. Zanarini, M. Tracie Shea

Charles A. Sanislow, Ph.D.

The aims of this study were to examine differences in clinical features, impairment, and types of childhood traumas among women with borderline personality disorder (BPD), women with BPD and posttraumatic stress disorder (PTSD), and those with other personality disorders and PTSD. Using baseline data from the Collaborative Longitudinal Study of Personality Disorders, 186 women were divided into 3 groups (BPD+PTSD, BPD, PTSD), based on structured diagnostic interviews for Axis I and Axis II disorders and compared on selected clinical variables. The additional diagnosis of PTSD in borderline women did not significantly increase the degree of borderline pathology and psychiatric morbidity …

Albina Personal Statement, Armin Weinberg

Works on Radiation Effects: 1990-2020

This is a personal statement written by Albina Orazgaliyeva (now Rippy). She was the daughter of our colleague (Marina) in Semipalatinsk who we helped come to the US to study. She eventually graduated from UH, married, and built a very successful business that they sold called Yoga One. The statement however is a powerful reminder of the reach of the partnership that went well beyond our funded mandate to that of friendship. Her family built a very successful private pharmacy and production business at a time when almost none existed after the breakup of the Soviet Union left countries like …

Interpreting Hemoglobin And Water Concentration, Oxygen Saturation, And Scattering Measured In Vivo By Near-Infrared Breast Tomography, Subhadra Srinivasan, Brian W. Pogue, Shudong Jiang, Hamid Dehghani, Christine Kogel, Sandra Soho, Jennifer J. Gibson, Tor D. Tosteson, Steven P. Poplack, Keith D. Paulsen

Dartmouth Scholarship

Near-infrared spectroscopic tomography was used to measure the properties of 24 mammographically normal breasts to quantify whole-breast absorption and scattering spectra and to evaluate which tissue composition characteristics can be determined from these spectra. The absorption spectrum of breast tissue allows quantification of (i) total hemoglobin concentration, (ii) hemoglobin oxygen saturation, and (iii) water concentration, whereas the scattering spectrum provides information about the size and number density of cellular components and structural matrix elements. These property data were tested for correlation to demographic information, including subject age, body mass index, breast size, and radiographic …