Medicine and Health Sciences Commons^™

Biocompatibility Of Poly-Ε-Caprolactone-Hydroxyapatite Composite On Mouse Bone Marrow-Derived Osteoblasts And Endothelial Cells, Haiying Yu, Paul H. Wooley, Shang-You Yang

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Tissue-engineered bone may be developed by seeding the cells capable of both osteogenesis and vascularization on biocompatible composite scaffolds. The current study investigated the performance of mice bone marrow-derived osteogenic cells and endothelial cells as seeded on hydroxyapatite (HA) and poly-ε-caprolactone (PCL) composite scaffolds.

Methods

Mononuclear cells were induced to osteoblasts and endothelial cells respectively, which were defined by the expression of osteocalcin, alkaline phosphatase (ALP), and deposits of calcium-containing crystal for osteoblasts, or by the expression of vascular endothelial growth factor receptor-2 (VEGFR-2) and von Willebrand factor (vWF), and the formation of a capillary network in Matrigel™ …

Predictors Of Situation Awareness In Graduate Student Registered Nurse Anesthetists, Suzanne Wright

Theses and Dissertations

ABSTRACT PREDICTORS OF SITUATION AWARENESS IN GRADUATE STUDENT REGISTERED NURSE ANESTHETISTS Suzanne M. Wright, Ph.D. A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at Virginia Commonwealth University. Virginia Commonwealth University, 2009 Major Director: J. James Cotter, Ph.D. Situation awareness (SA) is defined as one’s perception of the elements of the environment, the comprehension of their meaning, and the projection of their status in the near future. Stated more simply, SA is knowing what is going on around you. The concept of SA is well known in the field of aviation which is …

Antimicrobial Activity Of Tigecycline Against Nosocomial Pathogens In Pakistan: A Multicenter Study, Altaf Ahmed, Afia Zafar, Sajjad Mirza

Department of Pathology and Laboratory Medicine

OBJECTIVE: To measure the in-vitro activity of various antibiotics including tigecycline against Gram negative and positive nosocomial aerobic isolates. METHODS: A total of 430 clinical isolates of both Gram positive (143) and negative (287) aerobic bacteria were used from 3 centres during the year 2006 and 2007. Minimum inhibitory concentration (MIC) was determined using broth micro dilution panels. Antibiotic resistance was interpreted using CLSI guidelines.
RESULTS: Most of the isolates were resistant to more than one drug. Resistance to tigecycline was not found. Tigecycline (1 microg/ml) had low MIC against organisms tested.
CONCLUSION: This data indicates that tigecycline, …

An Audit Of Editorial Processing At Jcpsp: Issues And Compliance, Saba Sohail

Department of Radiology

No abstract provided.

Po10.19 Clinical Spectrum Of Pseudo Seizures At A Tertiary Care Hospital Karachi: A Video Eeg Based Study, Nadeem Ahmed Memon, Bhojo A. Khealani, Fazal Karim, Mustafa Khan, Nadir Ali Syed, Saad Shafqat

Department of Medicine

Background: Nonepileptic seizures are involuntary episodes of movement, sensation, or behaviors (e.g., vocalization, crying and other expressions of emotion), that do not result from abnormal cortical discharges. The events typically occur in teenage patients with anxiety and affective disorders. Psychotherapy, behavioral therapy, drugs, hypnosis and placebo are mainstay of treatment. There is no published data on clinical characteristics of pseudo-seizures from Pakistan. The objective of our study is to describe the clinical characteristics of pseudoseizures in a tertiary care hospital in Karachi, Pakistan. Methods: This is a descriptive study. Patients with pseudo-seizures were identified from departmental Video EEG monitoring …

Po5.53 Critical Illness Polyneuropathy And Myopathy: Experience At A Tertiary Care Center In Pakistan, Ghulam Shabbir, Ali Mehmood Raufi, Mustafa Khan, Nawal Salahuddin, Saad Shafqat

Department of Medicine

Background: Polyneuropathy and Myopathy are frequently encountere in the setting of Critical illness patients. Up to 50% of intensive care unit (ICU) patients show electrophysiological features of either or both conditions. These conditions interfere with functional recovery and delay weaning from mechanical ventilation, resulting in excess morbidity,mortality and cost of care. This study was to define the clinical spectrum of critical illness Polyneuropathy (CIP) and Myopathy (CIM) in a setting of developing country.
Methods: Hospital records spanning the period 2000 through 2005 weresearched with ICD-9 codes to identify patients with CIP and CIM. Functional improvement was judged by (i) …

Upregulation Of Defensins In Burn Sheep Small Intestine, Brian J Poindexter, Gordon L Klein, Stephen M Milner, Roger J Bick

Faculty, Staff and Student Publications

OBJECTIVE: The aim of this study was to visualize and localize the sheep antimicrobials, beta-defensins 1, 2, and 3, (SBD-1, SBD-2, SBD-3), sheep neutrophil defensin alpha (SNP-1), and the cathelicidin LL-37 in sheep small intestine after burn injury, our hypothesis being that these compounds would be upregulated in an effort to overcome a compromised endothelial lining. Response to burn injury includes the release of proinflammatory cytokines and systemic immune suppression that, if untreated, can progress to multiple organ failure and death, so protective mechanisms have to be initiated and implemented.

METHODS: Tissue sections were probed with antibodies to the antimicrobials …

Structure Altering Effects Of A Multicomponent Reading Intervention: An Application Of The Direct And Inferential Mediation (Dime) Model Of Reading Comprehension In Upper Elementary Grades, Georgios Kalantzis, Harel Z Shouval

Faculty, Staff and Student Publications

BACKGROUND: Synaptic plasticity underlies many aspect of learning memory and development. The properties of synaptic plasticity can change as a function of previous plasticity and previous activation of synapses, a phenomenon called metaplasticity. Synaptic plasticity not only changes the functional connectivity between neurons but in some cases produces a structural change in synaptic spines; a change thought to form a basis for this observed plasticity. Here we examine to what extent structural plasticity of spines can be a cause for metaplasticity. This study is motivated by the observation that structural changes in spines are likely to affect the calcium dynamics …

Molluscan Memory Of Injury: Evolutionary Insights Into Chronic Pain And Neurological Disorders, Edgar T Walters, Leonid L Moroz

Faculty, Staff and Student Publications

Molluscan preparations have yielded seminal discoveries in neuroscience, but the experimental advantages of this group have not, until now, been complemented by adequate molecular or genomic information for comparisons to genetically defined model organisms in other phyla. The recent sequencing of the transcriptome and genome of Aplysia californica, however, will enable extensive comparative studies at the molecular level. Among other benefits, this will bring the power of individually identifiable and manipulable neurons to bear upon questions of cellular function for evolutionarily conserved genes associated with clinically important neural dysfunction. Because of the slower rate of gene evolution in this molluscan …

Is Paromomycin An Effective And Safe Treatment Against Cutaneous Leishmaniasis? A Meta-Analysis Of 14 Randomized Controlled Trials, Dae Hyun Kim, Hye Jin Chung, Joachim Bleys, Reza F Ghohestani

Faculty, Staff and Student Publications

BACKGROUND: High cost, poor compliance, and systemic toxicity have limited the use of pentavalent antimony compounds (SbV), the treatment of choice for cutaneous leishmaniasis (CL). Paromomycin (PR) has been developed as an alternative to SbV, but existing data are conflicting.

METHODOLOGY/PRINCIPAL FINDINGS: We searched PubMed, Scopus, and Cochrane Central Register of Controlled Trials, without language restriction, through August 2007, to identify randomized controlled trials that compared the efficacy or safety between PR and placebo or SbV. Primary outcome was clinical cure, defined as complete healing, disappearance, or reepithelialization of all lesions. Data were extracted independently by two investigators, and pooled …

Incomplete Kawaski Disease: Are We Missing It, Abdul Gaffar Billoo, Saira Waqar Lone, Salman Siddiqui, Huba Atiq

Department of Paediatrics and Child Health

Kawasaki disease, also known as mucocutaneous lymph node syndrome or infantile polyarteritis nodosa is an acute febrile vasculitis of unknown etiology with a predilection for coronary arteries and potential for aneurysm formation. In Incomplete Kawasaki disease, children with fever lack the sufficient number of criteria to fulfill the epidemiologic case definition and are diagnosed when coronary artery disease is detected. We present a case report of a one and a half years old girl who came with features of incomplete Kawasaki disease, high grade fever, irritability, history of conjunctivitis and cracking of lips. She was investigated and had a platelet …

Controlled Evaluation Of Bactec Peds Plus/F And Bactec Lytic/10 Anaerobic/F Media For Isolation Of Salmonella Enterica Serovars Typhi And Paratyphi A From Blood, Megan E. Reller, Anita K. M. Zaidi, Shazia Sultana, Shazia Azeem, Beenish Hanif, Shahida Qureshi, Rumina Hasan, Zulfiqar Ahmed Bhutta, Rehana Akhter, Donald A. Goldmann

Department of Paediatrics and Child Health

We compared anaerobic lytic (AL) and pediatric aerobic resin-containing (Peds Plus/F) blood culture media for the isolation of Salmonella enterica serotype Typhi or Paratyphi A from children. The yields from AL and Peds Plus/F media were the same with equal volumes of blood, but recovery was faster from AL medium than Peds Plus/F medium (10.7 and 16.4 h, respectively) (P < 0.001).

Adenovirus E4orf4 Induces Hpv-16 Late L1 Mrna Production, Monica Somberg, Margaret Rush, Joanna Fay, Fergus Ryan, Helen Lambkin, Göran Akusjärvi, Stefan Schwartz

Articles

The adenovirus E4orf4 protein regulates the switch from early to late gene expression during the adenoviral replication cycle. Here we report that overexpression of adenovirus E4orf4 induces human papillomavirus type 16 (HPV-16) late gene expression from subgenomic expression plasmids. E4orf4 specifically overcomes the negative effects of two splicing silencers at the two late HPV-16 splice sites SD3632 and SA5639. This results in the production of HPV-16 spliced L1 mRNAs. We show that the interaction of E4orf4 with protein phosphatase 2A (PP2A) is necessary for induction of HPV-16 late gene expression. Also an E4orf4 mutant that fails to bind the cellular …

Morphoproteomic Evidence Of Constitutively Activated And Overexpressed Mtor Pathway In Cervical Squamous Carcinoma And High Grade Squamous Intraepithelial Lesions, Wei Feng, Xiuzhen Duan, Jinsong Liu, Jianguo Xiao, Robert E Brown

Faculty, Staff and Student Publications

Human papilloma virus (HPV) infection of the uterine cervix is linked to the pathogenesis of cervical cancer. Preclinical in vitro and in vivo studies using HPV-containing human cervical carcinoma cell lines have shown that the mammalian target of rapamycin (mTOR) inhibitor, rapamycin, and epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor, erlotinib, can induce growth delay of xenografts. Activation of Akt and mTOR are also observed in cervical squamous cell carcinoma and, the expression of phosphorylated mTOR was reported to serve as a marker to predict response to chemotherapy and survival of cervical cancer patients. Therefore, we investigated: a) the expression …

Risk Of Dementia Associated With Elevated Plasma Homocysteine In A Latin American Population, Inara J. Chacon, Aldrín E. Molero, Gloria Pino-Ramírez, José A. Luchsinger, Joseph H. Lee, Gladys E. Maestre

School of Medicine Publications

The relationship between total homocysteine (tHcy) and dementia risk remains controversial, as the association varies among populations and dementia subtypes. We studied a Venezuelan population that has high prevalence of both elevated tHcy and dementia. We tested the hypotheses that (1) elevated tHcy is associated with increased dementia risk, (2) the risk is greater for vascular dementia (VaD) than for Alzheimer’s disease (AD), and (3) a history of stroke may partly explain this association. 2100 participants (≥55 years old) of the Maracaibo Aging Study underwent standardized neurological, neuropsychiatric, and cardiovascular assessments. Elevated tHcy was significantly associated with dementia, primarily VaD. …

Increased Strength And Physical Performance With Eccentric Training In Women With Impaired Glucose Tolerance: A Pilot Study, Robin L. Marcus, Paul C. Lastayo, Leland E. Dibble, Laura Hill, Donald A. Mcclain

Human Movement Studies & Special Education Faculty Publications

Background: Menopause is associated with both a loss of muscle mass and a worsening of insulin sensitivity (IS). Although eccentric resistance exercise (ECC) can effectively improve muscle mass over time, a single bout of ECC can worsen IS. This study assessed the effect of repeated ECC on IS, muscle mass, and function in postmenopausal women with impaired glucose tolerance (IGT).

Methods: Sixteen PM women (aged 56 years +/- 6.4) with IGT were randomly assigned to a 12-week, knee extensor ECC program (n = 10) or a nonexercise control group (CON) (n = 6). Participants underwent hyperinsulinemic-euglycemic clamps, dual-energy …

Repression Of E-Cadherin By The Polycomb Group Protein Ezh2 In Pancreatic Cancer, A. D. Toll, A. Dasgupta, M. Potoczek, C. G. Kleer, J. R. Brody, A. K. Witkiewicz

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Our study suggest that E-cadherin downregulation may lead to EZH20-mediated invasion and metastasis. While strong diffuse EZH2 expression is seen in PDA, overexpression may be present in IPMN.

Identification Of Gastrointestinal Contamination In Pancreatic Fna, A. D. Toll, M. Bibbo

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

In contrast to previous work, our preliminary results indicate B72.3 expression cannot be reliably used to identify GIC. A lack of CEA expression, however, may be used to identify both gastric and duodenal contamination. This represents an important diagnostic aid in the evaluation of suspected low-grade mucinous lesions.

Functional Interleukin-17 Receptor A Is Expressed In Central Nervous System Glia And Upregulated In Experimental Autoimmune Encephalomyelitis., Jayasri Das Sarma, Bogoljub Ciric, Ryan Marek, Sanjoy Sadhukhan, Michael L. Caruso, Jasmine Shafagh, Denise C. Fitzgerald, Kenneth S. Shindler, Am Rostami

Department of Neurology Faculty Papers

BACKGROUND: Interleukin-17A (IL-17A) is the founding member of a novel family of inflammatory cytokines that plays a critical role in the pathogenesis of many autoimmune diseases, including multiple sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE). IL-17A signals through its receptor, IL-17RA, which is expressed in many peripheral tissues; however, expression of IL-17RA in the central nervous system (CNS) and its role in CNS inflammation are not well understood.

METHODS: EAE was induced in C57Bl/6 mice by immunization with myelin oligodendroglial glycoprotein. IL-17RA expression in the CNS was compared between control and EAE mice using RT-PCR, in situ …

Vitreo-Retinal Traction And Anastrozole Use, Alvin Eisner, Emily J. Thielman, Julie Falardeau, John T. Vetto

Community Health Faculty Publications and Presentations

Purpose—This study tested a prediction stemming from the hypothesis that anastrozole users experience heightened vitreo-retinal traction. This hypothesis was based on the knowledge that menopause increases the risk of intraocular tractional events such as posterior vitreous detachments (PVDs).

Methods—Retinal thickness was measured for 3 groups of amenorrheic women: (1) anastrozole users and (2) tamoxifen users undergoing adjuvant therapy for early-stage breast cancer, and (3) control subjects not using hormonal medication. Foveal shape indices were derived for subjects without PVDs.

Results—For anastrozole users, the distance to the temporal side of the fovea became less than the distance to …

Follow-Up Compliance Of Adolescents With Cervical Dysplasia In An Inner-City Population., Faunda N. Campbell Md, Eduardo Lara-Torre Md

Department of Pediatrics

No abstract provided.

Transfusion Related Acute Lung Injury--Trali: An Under Diagnosed Entity, Bushra Moiz, Hasanat Sharif, Fauzia Ahmad Bawany

Department of Pathology and Laboratory Medicine

Transfusion related acute lung injury (TRALI) is a life-threatening complication of transfusion of blood and its components resembling acute respiratory distress syndrome (ARDS) or acute lung injury (ALI). TRALI is a particular form of ARDS that follows blood transfusion and is caused by donor-derived antibodies present in the transfused products, reacting with the recipients' blood cells, inducing release of inflammatory mediators thus compromising lung functions. Anti-HLA antibodies are the most frequently indicted inducers in this category. Literature search has not revealed any documented case of TRALI from Pakistan. This in no way implies that TRALI is non existent in this …

Presentation Of A Patient With Palpable Purpuric Rash, Safoorah Khalid, Mohammad Khurshid

Department of Pathology and Laboratory Medicine

Henoch Shonlein purpura (HSP) is a form of systemic vasculitis characterized by deposition of IgA dominant immune complexes in the small vessels. The triad of palpable purpuric rash on lower extremities, abdominal or renal involvement and arthritis is the typical presentation in this condition. The disease primarily affects children and is less common in adults. We report a case of a young female who presented with palpable purpura on legs, classical symptoms of HSP i.e. arthritis and off and on abdominal pain.

Genotyping And Drug Resistance Patterns Of M. Tuberculosis Strains In Pakistan., Mahnaz Tanveer, Zahra Hasan, Amna R Siddiqui, Asho Ali, Akbar Kanji, Solomon Ghebremicheal, Rumina Hasan

Department of Pathology and Laboratory Medicine

Background:The incidence of tuberculosis in Pakistan is 181/100,000 population. However, information about transmission and geographical prevalence of Mycobacterium tuberculosis strains and their evolutionary genetics as well as drug resistance remains limited. Our objective was to determine the clonal composition, evolutionary genetics and drug resistance of M. tuberculosis isolates from different regions of the country.

Methods:

M. tuberculosis strains isolated (2003-2005) from specimens submitted to the laboratory through collection units nationwide were included. Drug susceptibility was performed and strains were spoligotyped.

Results:

Of 926 M. tuberculosis strains studied, 721(78%) were grouped into 59 "shared types", while 205 (22%) were identified …

Splenic Rupture, Secondary To G-Csf Use For Chemotherapy Induced Neutropenia: A Case Report And Review Of Literature., Nehal Masood, Asim Jamal Shaikh, Wasim Ahmed Memon, Romana Idress

Section of Haematology/Oncology

Introduction: Chemotherapy Induced neutropenia is a frequent and serious complication of cytotoxic cancer treatment. Granulocyte colony stimulating factors (G-CSF) are frequently used to counter neutropenia, attempt rapid recovery of Patients and allow for continuation of treatment without compromise on dose, especially in curative malignancies. Generally regarded as safe, G-CSF use has been very rarely reported to have resulted in serious side effects, such as, splenic rupture. Case Presentation: We are reporting a case of a twenty years old man, who was being treated for T cell acute lymphoblastic leukemia and received colony stimulating factors for treatment of severe neutropenia and …

Topical Application Of Entry Inhibitors As "Virustats" To Prevent Sexual Transmission Of Hiv Infection, Michael M. Lederman, Robin L.P. Jump, Heather A. Pilch-Cooper, Scott F. Sieg

Faculty Scholarship

With the continuing march of the AIDS epidemic and little hope for an effective vaccine in the near future, work to develop a topical strategy to prevent HIV infection is increasingly important. This stated, the track record of large scale "microbicide" trials has been disappointing with nonspecific inhibitors either failing to protect women from infection or even increasing HIV acquisition. Newer strategies that target directly the elements needed for viral entry into cells have shown promise in non-human primate models of HIV transmission and as these agents have not yet been broadly introduced in regions of highest HIV prevalence, they …

Outcomes In Culture Positive And Culture Negative Ascitic Fluid Infection In Patients With Viral Cirrhosis: Cohort Study, Lubna Kamani, Khalid Mumtaz, Umair S. Ahmed, Ailia W. Ali, Wasim Jafri

Department of Medicine

Background: Ascitic fluid infection (AFI) in cirrhotic Patients has a high morbidity and mortality. It has two variants namely, spontaneous bacterial peritonitis (SBP) and culture negative neutrocytic ascites (CNNA). The aim of this study was to determine the outcome in cirrhotic Patients with culture positive (SBP) and culture negative neutrocytic ascites. Methods: We analyzed 675 consecutive hepatitis B and/or C related cirrhosis Patients with ascites admitted in our hospital from November 2005 to December 2007. Of these, 187 Patients had AFI, clinical and laboratory parameters of these Patients including causes of cirrhosis, Child Turcotte Pugh (CTP) score were recorded. Results: …

Identifying People At High Risk For Developing Sleep Apnea Syndrome (Sas): A Cross-Sectional Study In A Pakistani Population, Fawad Taj, Zarmeneh Aly, Mahwash Kassi, Mansoor Ahmed

Department of Medicine

Background: Obstructive Sleep Apnea (OSA) is associated with many cardiovascular and psychiatric diseases. Day-time sleepiness is a common consequence of sleep apnea and correlates with road-traffic accidents (RTA). Pakistan has a high prevalence of factors which predispose an individual to OSA and death from RTAs are a huge burden. However there is a dearth of prevalence studies in this regard. We aim to understand local relevance of the disease and estimate the prevalence of individuals high-risk for OSA. Methods: This cross-sectional survey was conducted among 450 individuals at Aga Khan University Hospital (AKUH), which is a tertiary care teaching hospital …

Denaturation And Unfolding Of Human Anaphylatoxin C3a: An Unusually Low Covalent Stability Of Its Native Disulfide Bonds, Jui-Yoa Chang, Curtis C-J Lin, Silvia Salamanca, Michael K Pangburn, Rick A Wetsel

Faculty, Staff and Student Publications

The complement C3a anaphylatoxin is a major molecular mediator of innate immunity. It is a potent activator of mast cells, basophils and eosinophils and causes smooth muscle contraction. Structurally, C3a is a relatively small protein (77 amino acids) comprising a N-terminal domain connected by 3 native disulfide bonds and a helical C-terminal segment. The structural stability of C3a has been investigated here using three different methods: Disulfide scrambling; Differential CD spectroscopy; and Reductive unfolding. Two uncommon features regarding the stability of C3a and the structure of denatured C3a have been observed in this study. (a) There is an unusual disconnection …

Kelly, Rita Helen Roberts (Fa 353), Manuscripts & Folklife Archives

Folklife Archives Finding Aids

Finding aid and full-text scan of paper (Click on “Additional Files” below) for Folklife Archives Project 353. Paper: "Good Mothering through Breast Feeding: Observations of a Meeting of the La Leche League" written by Rita H. Kelly for a Western Kentucky University folk studies class.