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Oncolog, Volume 48, Number 09, September 2003, Katie Prout Matias, David Galloway, Jeffrey E. Lee Md

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

• Sentinel Lymph Node Biopsy: Detection of Micrometastases Leads to More Precise Staging of Breast and Melanoma Tumors
• Sentinel Lymph Node Biopsy Shows Promise in Eye and Colon Cancers
• New Research Promotes a More Dynamic View of Adult Stem Cell Differentiation: Hematopoietic Stem Cells May One Day Be Used to Repair Tissue Damage Caused by Radiation Therapy or Chemotherapy
• House Call: Understanding the Buzz over Stem Cells
• DiaLog: Directed Parathyroid Surgery, by Jeffrey E. Lee, MD, Professor, Department of Surgical Oncology

Irritable Bowel Syndrome In Health Care Professionals In Pakistan, Wasim Jafri, Javed Yakoob, Nadim Jafri, Mahesh Maloni, Saeed Hamid, Hasnain Ali Shah, Shahab Abid

Section of Gastroenterology

Objective: To evaluate the symptomatology of irritable bowel syndrome (IBS) among health care professionals attending an IBS symposium in a tertiary care university hospital. Method: A questionnaire designed to incorporate Manning and Rome II criteria was distributed among participants of an IBS symposium, most of them were health care professionals. A total of 100 questionnaires were distributed, 41 had symptoms fulfilling criteria of IBS. In these patients male: female ratio was 28:13 with age range 18-68. Results: The predominant symptom was abdominal pain 87.8 % (36/41) which was aggravated post-prandially 72.2% (29/41), relieved following defecation in 87 % (35/41) with …

Extrarenal Wilms' Tumor, M Yunus, R Hashmi, S H. Hasan, H M. Brohi

Department of Radiology

No abstract provided.

Intensive Care Medical Procedure : Ptsd Symptoms In Children, Ludmila Zaytsev

Loma Linda University Electronic Theses, Dissertations & Projects

Studies indicate that medical procedures may cause post-traumatic stress (PTS) symptoms (fear, avoidance, sleep disturbances, irritability, concentration difficulties. hypervigilance). It has been suggested that administration of midazolam hydrochloride, a sedative/amnesic medication commonly used in the Pediatric Intensive Care Units (PICU), may help decrease if not prevent the development of PTS symptoms. This study examined if PTS symptoms were related to procedural invasiveness (PI) and whether midazolam had a moderating effect on the development and intensity of PTS symptoms in children. English-speaking children ages 8-16 (N=20) who had been in the PICU for at least 3 days were recruited at Loma …

The Psychological Characteristics Of Obese Children, Thomas Taylor Mitchell

Loma Linda University Electronic Theses, Dissertations & Projects

Several studies along with the surgeon general of the United States have identified obesity as a national health issue. Research indicates that adult obesity treatment has relatively poor long-term effects. Consequently increased attention has been given to addressing obesity in children. This focus is particularly vital due to the fact that children are one of the populations showing the most rapid increase in overweight and obesity. The purpose of this study was to identify the some of the unique psychological characteristics of obese children by analyzing the intake data of children and adolescents attending the Loma Linda University Growing Fit …

The Radiopacity Of 29 Resin Restorative Materials Compared To Enamel, Peter Lubisich Iv

Loma Linda University Electronic Theses, Dissertations & Projects

The radiodensity of a composite resin can greatly influence a clinician's ability to analyze a restoration for failure. The purpose of this study was to determine the relative radiopacities of 29 resin restorative materials compared to enamel, and to verify the comparable radiopacity between shades of 23 of the restorative composite resin materials. Composite resin discs measuring >5mm in diameter and 2 mm in thickness were made and polymerized. Radiographs were taken of the composite resin discs, which included an aluminum step wedge for calibration and a densitometer was used to measure the radiodensity of the composite resin samples. The …

Assessment Of Alveolar Bone Density Using Implant Insertion Resistance Torque, Scott Sangmoo Lee

Loma Linda University Electronic Theses, Dissertations & Projects

Background: Implant stability during healing is a pre-requisite for successful osseointegration. In the case of early or immediate implant loading, it is necessary to achieve high level of stabilization during surgical placement. Fixture stabilization can be measured by resonance frequency analysis or implant insertion resistance torque measurement. The aim of this study is to correlate pre-operative radiographic bone density to implant insertion resistance torque in human cadaver jaw bone.

Materials & Methods: Sixty-four implant osteotomy sites in human cadaver jaw bones were previously examined radiographically using quantitative computed tomography (QCT) and quantitative cone-beam computed tomography (QCBCT). Forty-two implant insertion sites …

Quantification Of Bone Deposition In Onlay Bone Grafting, Gregory Alan Kammeyer

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to quantitatively evaluate; 1) mandibular posterior mono-cortical block onlay bone graft success rates 2) the amount of grafted bone retained after initial resorption in radiographic projections. Seven consecutive patients with 14 mandibular posterior implant sites requiring bone augmentation for implants of a standard 3.8mm x 10mm dimension were sought. Mono-cortical block bone grafts from the ipsilateral ascending ramus were placed then observed with two standardized CT scans, dividing them into two groups: Group A had the first CT at 4 weeks after graft placement and a second taken before Prosthodontic reconstruction, 36.7 weeks later. …

Sart Influences Sars Expression In Staphylococcus Aureus, Katherine A. Schmidt, Adhar C. Manna, Ambrose L. Cheung

Dartmouth Scholarship

Staphylococcus aureus is a gram-positive pathogen that is capable of expressing a variety of virulence proteins in response to environmental signals. Virulence protein expression in S. aureus is controlled by a network of regulatory loci including sarA and agr. The sarA/agr network is associated with the expression of cell wall-associated adhesins during exponential growth and the expression of secreted enzymes and toxins in the transition to post-exponential growth. A number of sarA homologs, including sarT and sarS, have been identified in the S. aureus genome. Previous studies have shown that sarA influences expression of both sarT and sarS in the …

Laparoscopic Appendicectomy At The Aga Khan Hospital, Nairobi, S. C. Patel, G. F. Jumba, S. Akmal

General Surgery, East Africa

Objective: To evaluate our experience of laparoscopic appendicectomy at the Aga Khan Hospital, Nairobi over a six year period from the inception of the technique and to assess its advantages and disadvantages.

Design: Case series study.

Setting: The Aga Khan Hospital, Nairobi.

Patients: One hundred and six cases operated on from May 1996 to June 2002. Main outcome measures: Clinical presentation, age and sex demographics, average hospital stay, operating time, intra-operative and post-operative complications and outcome.

Results: There was a female preponderance with a female to male ratio of 2:3:I. Mean age was 30.6 years. There was a slightly more …

Risk Factors For Cardiovascular Disease In School Children--A Pilot Study., A. K. Khuwaja, Zafar Fatmi, W. B. Soomro, N. K. Khuwaja

Community Health Sciences

OBJECTIVE:

To assess the frequencies of risk factors for cardiovascular disease in school children. The information may help in designing interventions aimed at modifying unhealthy lifestyle in children, which may reduce the later incidence of cardiovascular disease in adults.

METHODS:

A cross-sectional study was conducted on 206 students (ages 14-18 years), enrolled in higher secondary school. Students were interviewed about their lifestyles, family history of cardiovascular disease and its risk factors. Moreover, they were assessed for height, weight and blood pressure.

RESULTS:

Twenty nine percent of the children were physically inactive, 31% were taking unhealthy diet daily, 21% were overweight …

Spectrum Of Cutaneous Appendage Tumors At Aga Khan University Hospital, N Yaqoob, Z Ahmad, S Muzaffar, M S. Gill, I N. Soomro, S H. Hasan

Department of Pathology and Laboratory Medicine

Objective: To determine the frequency of various types of cutaneous appendage tumors in our practice.
Method: This is a partly retrospective and partly prospective study conducted at the Department of Pathology, Histopathology Section, The Aga Khan University Hospital, Karachi between 1st January 1997 and 31st December 2001.
Results: One hundred sixty six skin appendage tumors were diagnosed during the study period. 87.3% were benign, while 12.6% were malignant. Male female ratio was almost equal. Mean age was 41.72 years. 37.34% showed eccrine differentiation, 14.45% showed apocrine differentiation and 41.56% showed pilosebaceous differentiation, 6.62% exhibited mixed differentiation. The 5 commonest tumors …

Radiation Effects On Dopamine-Mediated Prepulse Inhibition In The C57bl/6 Mouse, Cara Nicole Zuccarelli Miller

Loma Linda University Electronic Theses, Dissertations & Projects

This study examined the effects of proton and gamma radiation on a dopamine-dependent sensory gating mechanism: prepulse inhibition of the startle reflex. The purpose of this research was to describe potential hazards of proton radiation to the central nervous system in long-term space fight and for proton therapy patients. Results from previous research indicate that startle behavior is modified by proton and iron radiation. Forty-eight 10-½ week old, male C57BL/6 mice were used to characterize the optimal parameters for the model (prepulse duration, probe duration, and stimulus-onset-asynchrony). Three hundred and fifty two mice were used to characterize the time course …

A Comparison Of Morphine And Nalbuphine For Intraoperative And Postoperative Analgesia, F N. Minai, F A. Khan

Department of Anaesthesia

Introduction: Short acting narcotics are not available in Pakistan and the supply of drugs like morphine and pethidine is short and erratic; therefore there is a need for investigating acceptable alternatives for analgesia, to be used for balanced anaesthesia.Objective: We studied the agonist-antagonist narcotic nalbuphine compared to morphine, for intra and postoperative pain relief in total abdominal hysterectomies.Methods: In a randomised double blind trial, fifty ASA I and II patients in two groups of twenty five each were given equianalgesic doses of morphine and nalbuphine. Hemodynamic stability, intraoperative analgesia, recovery profiles, incidence of side effects and need for postoperative supplements …

Seek And Ye Shall Find, Vivian Mcalister

Data and Test Instruments

The United States has relaxed its ban on the importation of Canadian meat cuts from cattle less than 30 months of age. Mexico, too, is reopening its borders to Canadian beef.The principal argument Canada has used to reassure its trading partners is that only one older cow, and none of the 2,700 animals with which that cow came into contact, tested positive for mad-cow disease. Meanwhile, the Canadian Food Inspection Agency has detailed measures it is taking to prevent mad-cow disease, or bovine spongiform encephalopathy, "from entering Canada." Surveillance and testing of animals has been increased.But it's folly to try …

Vegf164-Mediated Inflammation Is Required For Pathological, But Not Physiological, Ischemia-Induced Retinal Neovascularization, Susumu Ishida, Tomohiko Usui, Kenji Yamashiro, Yuichi Kaji, Shiro Amano, Yuichiro Ogura, Tetsuo Hida, Yoshihisa Oguchi, Jayakrishna Ambati, Joan W. Miller, Evangelos S. Gragoudas, Yin-Shan Ng, Patricia A. D'Amore, David T. Shima, Anthony P. Adamis

Ophthalmology and Visual Science Faculty Publications

Hypoxia-induced VEGF governs both physiological retinal vascular development and pathological retinal neovascularization. In the current paper, the mechanisms of physiological and pathological neovascularization are compared and contrasted. During pathological neovascularization, both the absolute and relative expression levels for VEGF₁₆₄ increased to a greater degree than during physiological neovascularization. Furthermore, extensive leukocyte adhesion was observed at the leading edge of pathological, but not physiological, neovascularization. When a VEGF₁₆₄-specific neutralizing aptamer was administered, it potently suppressed the leukocyte adhesion and pathological neovascularization, whereas it had little or no effect on physiological neovascularization. In parallel experiments, genetically altered VEGF_{164 …}

External Ankle Stablization: Male High School Basketball Players' Perceptions On Functional Performance, Renae E. Bomar

All-Inclusive List of Electronic Theses and Dissertations

Objective: The purpose of this study was to measure and report athletes' perceptions of the effects an external ankle support has on functional performance, and to gain knowledge ofwhat type of ankle support the athletes choose to wear. Design and Setting: A questionnaire containing demographic information and 4 construct areas was designed to focus on assessing high school male basketball players' perception of functional performance while wearing an external ankle support. Survey p~ckets were sent to high school certified athletic trainers (ATCs) to be distributed to each male basketball player. Subjects: Approximately 770 surveys were sent out to ATCs in …

Prevalence Of Overweight In Preschool Children And The Association With Dietary And Lifestyle Factors, Anthony H. Ng

All-Inclusive List of Electronic Theses and Dissertations

For the past several decades, there has been a steady increase in obesity in the United States. National surveys indicate that 64% of American adults are overweight or obese and more than 1 0% of preschool children are overweight. This study determined the prevalence of overweight in a group of preschool children aged between three and five years at a Head Start Center and evaluated the relationship of specific lifestyle factors between caregivers and their children and the relationship of these patterns to the development of overweight. The caregivers were asked to complete a questionnaire, which assessed specific dietary and …

Certified Athletic Trainers' Knowledge And Perception Of Professional Preparation Involving Eating Disorders Among Athletes, Emily Jo Reliford

All-Inclusive List of Electronic Theses and Dissertations

Context: It was unclear in the current research how Certified Athletic Trainers (ATC) perceived their professional preparation about eating disorders and disordered eating. Objective: To establish how ATCs perceived their professional preparation and educational background in managing eating disorders. Design and Setting: A 42 item web based survey was specifically created for this study and disseminated to certified members of the NATA. Subjects: The survey was disseminated to 14,477 certified NATA members. The response rate was 13.6% (n=l 966) with a mean age 31.87±7.82. Measurements: This survey consisted of an 11 question demographics section, 13 Likert ( 1-7) scale questions, …

Treatment Failure Of Tuberculosis Due To Concomitant Pathology, Z A. Qasim, A R. Sarwari, S M. Jilani

Section of Pulmonary & Critical Care

No abstract provided.

Peritumoral Cystic Meningioma, Arshad A. Siddiqui, Junaid Asharaf, Ahmed Ali Shah

Section of Neurosurgery

A case of 39 years old male is described who presented with headache, right-sided focal fits and decreased power in the right hand. CT scan brain showed a left fronto-parietal cystic lesion with centrolateral intramural nodule with homogenous enhancement. At surgery, the extra-axial lesion with cyst containing xanthochromic fluid had a well-defined capsule that could easily be separated from the peri-lesional cortical surface. The dural-based nodule with its cyst wall was resected in toto. The histopathology of mural nodule was reported as meningioma while the cyst wall histology revealed meningothelial cells.

Predictors That Affect The Caregiver's Health Status And The Role Of Social Support On The Caregiver's Health Status, Hong Wang

All-Inclusive List of Electronic Theses and Dissertations

This study examines whether the caregiver's self-rated health status is affected by the caregiver's demographic characteristics (age, education level, and income), caregiver's stressor (the number of ADL and IADL), mediating variables of the caregiver's appraisal (willingness to help non-family members, level satisfaction with life, and financial burden), of and mediating variable of social support (information and/or advice from other family members or friends). Data were drawn from Chronic Illness and Caregiving, a national telephone survey conducted by Harris Interactive Inc. on behalf of The Robert Wood Johnson Foundation, Johns Hopkins University, and Partnership for Solutions. The sample size of caregivers …

Vital Signs, Fall 2003, Boonshoft School Of Medicine

Vital Signs

A twenty-eight page newsletter created by the Boonshoft School of Medicine to document the current affairs of the school. This issue includes a variety of feature articles, faculty profiles, and more.

Diagnosis Of Pulmonary Embolism With Helical Ct Scan, M U. Usman, V Bari, Javed Yakoob, Murad M. Khan Dr.

Department of Radiology

Objective: To determine the role of helical C.T. scan in the diagnosis of pulmonary embolism.SETTING: Radiology department, Aga Khan University Hospital. One year prospective study May 2001 to May 2002.Methods: Sixty patients suspected of having pulmonary embolism were included in this study. Helical C.T. scan chest was performed from aortic arch to lung bases with intravenous contrast medium. Images were acquired in mediastinal and lung windows. Image interpretation was performed on the console and hard copies for main branch and segmental thrombus.Results: Fifteen patients were diagnosed of having pulmonary embolism on C.T. scan. Clinical correlation and follow up with pulmonary …

Isolated Congenital Bilateral Absence Of Vas Deferens (Cbavd): A Rare Anomaly And Diagnostic Dilemma, M Moazzam, Syed Raziuddin Biyabani, C K. Jadoon

Section of Urology

No abstract provided.

What Is Wrong With Medical Audit?, J H. Rizvi

Department of Obstetrics & Gynaecology

No abstract provided.

Ccr5 Mediates Specific Migration Of Toxoplasma Gondii—Primed Cd8+ Lymphocytes To Inflammatory Intestinal Epithelial Cells, Souphalone Luangsay, Lloyd H. Kasper, Nicolas Rachinel, Laurie A. Minns

Dartmouth Scholarship

Toxoplasma gondii, an obligate intracellular parasite, can invade intestinal epithelial cells and elicit a robust Th1 immune response. In this model of intestinal inflammation, CD8⁺ intraepithelial lymphocytes (IELs) secrete transforming growth factor (TGF)-β, which appears necessary for the maintenance of homeostasis in the intestine. However, the mechanism responsible for the IEL migration to the inflamed intestine is still unclear.An in vitro coculture cell system was used to quantify the IEL attraction by an infected intestinal epithelial cell line (m-IC_cl2). We used CCR5-deficient mice to determine which chemokine receptor—chemokine interaction could be responsible for the recruitment of …

Genetic Polymorphisms Of The Interleukin-1 Gene And Early Marginal Bone Loss Around Endosseous Dental Implants, Hitomi Shimpuku, Yasuhiro Nosaka, Tatsuya Kawamura, Yoichi Tachi, Mitsuko Shinohara, Kiyoshi Ohura

Faculty, Staff and Student Publications

Dental implant surgery commonly proceeds in two stages. It is generally accepted that bone loss around implants does not occur at stage-II surgery because implants do not receive mechanical loading. However, early marginal bone loss around implants occasionally does occur during the healing period. Genetic polymorphisms in the interleukin-1 (IL-1) gene have been reported to be important for bone homeostasis and susceptibility to bone disease. We therefore investigated whether the idiopathic early marginal bone loss around implants is related to polymorphisms in the IL-1 gene. We performed a case-control study. Patients demonstrating marginal bone loss around implants at stage-II surgery …

Medical Education Digest, Vol. 5 No. 4 (July 15, 2003), Nova Southeastern University

Medical Education Digest

No abstract provided.

Adjusting For Non-Ignorable Verification Bias In Clinical Studies For Alzheimer’S Disease, Xiao-Hua Zhou, Pete Castelluccio

UW Biostatistics Working Paper Series

A common problem for comparing the relative accuracy of two screening tests for Alzheimer’s disease (D) in a two-stage design study is verification bias. If the verification bias can be assumed to be ignorable, Zhou and Higgs (2000) have proposed a maximum likelihood approach to compare the relative accuracy of screening tests in a two-stage design study. However, if the verification mechanism also depends on the unobserved disease status, the ignorable assumption does not hold. In this paper, we discuss how to use a profile likelihood approach to compare the relative accuracy of two screening tests for AD without assuming …