Medical Specialties Commons^™

Inhibition Of Proteasome Activity By The Dietary Flavonoid Apigenin Is Associated With Growth Inhibition In Cultured Breast Cancer Cells And Xenografts, Di Chen, Kristin R. Landis-Piwowar, Marina S. Chen, Q Ping Dou

Wayne State University Associated BioMed Central Scholarship

Abstract

Introduction

Proteasome inhibition is an attractive approach to anticancer therapy and may have relevancy in breast cancer treatment. Natural products, such as dietary flavonoids, have been suggested as natural proteasome inhibitors with potential use for cancer prevention and therapeutics. We previously reported that apigenin, a flavonoid widely distributed in many fruits and vegetables, can inhibit proteasome activity and can induce apoptosis in cultured leukemia Jurkat T cells. Whether apigenin has proteasome-inhibitory activity in the highly metastatic human breast MDA-MB-231 cells and xenografts, however, is unknown.

Methods

MDA-MB-231 breast cancer cell cultures and xenografts were treated with apigenin, followed by …

Effects Of Curcumin On Retinal Oxidative Stress And Inflammation In Diabetes, Renu A. Kowluru, Mamta Kanwar

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Oxidative stress and inflammation are implicated in the pathogenesis of retinopathy in diabetes. The aim of this study is to examine the effect of curcumin, a polyphenol with antioxidant and anti-inflammatory properties, on diabetes-induced oxidative stress and inflammation in the retina of rats.

Methods

A group of streptozotocin-induced diabetic rats received powdered diet supplemented with 0.05% curcumin (w/w), and another group received diet without curcumin. The diets were initiated soon after induction of diabetes, and the rats were sacrificed 6 weeks after induction of diabetes. The retina was used to quantify oxidative stress and pro-inflammatory markers.

Results

Antioxidant …

Paradoxical Antiproliferative Effect By A Murine Mammary Tumor-Derived Epithelial Cell Line, Esteban N. Gurzov, Sanaa M. Nabha, Hamilto Yamamoto, Hong Meng, O Graciela Scharovsky, R Daniel Bonfil

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Despite significant advancement in breast cancer therapy, there is a great need for a better understanding of the mechanisms involved in breast carcinogenesis and progression, as well as of the role of epigenetic contributions from stromal cells in mammary tumorigenesis. In this study, we isolated and characterized murine mammary tumor-derived epithelial and myofibroblast cell lines, and investigated the in vitro and in vivo effect of cellular soluble factors produced by the epithelial cell line on tumor cells.

Methods

Morphology, immunophenotype, cytogenetics, invasiveness, and tumorigenicity of epithelial (LM-234ep) and myofibroblast (LM-234mf) cell lines isolated from two murine mammary adenocarcinomas …

Progression Of Renal Cell Carcinoma Is Inhibited By Genistein And Radiation In An Orthotopic Model, Gilda G. Hillman, Yu Wang, Mingxin Che, Julian J. Raffoul, Mark Yudelev, Omer Kucuk, Fazlul H. Sarkar

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

We have previously reported the potentiation of radiotherapy by the soy isoflavone genistein for prostate cancer using prostate tumor cells in vitro and orthotopic prostate tumor models in vivo. However, when genistein was used as single therapy in animal models, it promoted metastasis to regional para-aortic lymph nodes. To clarify whether these intriguing adverse effects of genistein are intrinsic to the orthotopic prostate tumor model, or these results could also be recapitulated in another model, we used the orthotopic metastatic KCI-18 renal cell carcinoma (RCC) model established in our laboratory.

Methods

The KCI-18 RCC cell line was generated …

Poxviral B1 Kinase Overcomes Barrier To Autointegration Factor, A Host Defense Against Virus Replication, Matthew S. Wiebe, Paula Traktman

Nebraska Center for Virology: Faculty Publications

Barrier to autointegration factor (BAF) is a DNA-binding protein found in the nucleus and cytoplasm of eukaryotic cells that functions to establish nuclear architecture during mito-sis. Herein, we demonstrate a cytoplasmic role for BAF in host defense during poxviral infections. Vaccinia is the prototypic poxvirus, a family of DNA viruses that replicate ex-clusively in the cytoplasm of infected cells. Mutations in the vaccinia B1 kinase (B1) com-promise viral DNA replication, but the mechanism by which B1 achieves this has remained elusive. We now show that BAF acts as a potent inhibitor of poxvirus replication unless its DNA-binding activity is blocked …

Research Annual Report 2006, Children's Mercy Hospital

Research Annual Reports

Annual report of the research at Children's Mercy Hospital in Kansas City MO, a pediatric medical center.

Non-Cardiac Surgery In Patients With Prosthetic Heart Valves: A 12 Years Experience, Raja Parvez Akhtar, Abdul Rehman Abid, Hasnain Zafar, Syed Javed Raza Gardezi, Abdul Waheed, Jawad Sajid Khan

Section of General Surgery

Objective: To study patients with mechanical heart valves undergoing non-cardiac surgery and their anticoagulation management during these procedures.
Study Design: It was a cohort study.
Place and Duration of Study : The study was conducted at the Department of Cardiac Surgery, Punjab Institute of Cardiology, Lahore and Department of Surgery, Services Institute of Medical Sciences, Lahore, from September 1994 to June 2006.
Patients and Methods: Patients with mechanical heart valves undergoing non-cardiac surgical operation during this period, were included. Their anticoagulation was monitored and anticoagulation related complications were recorded.
Results: In this study, 507 consecutive patients with a mechanical …

Three Pregnancies With Mechanical Heart Valve And No Follow-Up In 10 Years, Raja Parvez Akhtar, Abdul Rehman Abid, Hasnain Zafar

Section of General Surgery

Anticoagulation and proper INR (International Normalized Ratio) monitoring is essential for patients having mechanical heart valves; it is vital in these patients in order to prevent lethal complications such as valve thrombosis and systemic embolism. In pregnancy, it becomes even more important as pregnancy itself is a hypercoagulable state. This report describes a female patient having undergone mitral valve replacement with a Starr Edward metallic prosthesis. She came back to the operating surgeon after 10 years of valve replacement with a history of three uneventful healthy deliveries and no follow-up and INR monitoring during this period.

Spectrum Of Intracranial Pathology: Tumors Versus Infections At A Tertiary Care Hospital, Muhib Alam Khan, Sukaina Aijazali Panju, Ather Enam

Section of Neurosurgery

Introduction: Aga Khan University Hospital Neurosurgery Department has evolved into a high-volume centre for treatment of neurosurgical diseases. We aimed to compare the relative outcomes of intracranial tumors and CNS infections seen at our facility.
Methods: Hospital records of patients admitted under the neurosurgery service between 1994-2003 were evaluated. Cases with a principal diagnosis of an intracranial lesion were identified for further study. Demographic, clinical,and surgical variables were extracted from the medical record. Length of hospital stay, ICU utilization, and in-hospital mortality were the primary outcome indicators. Data were analyzed through descriptive statistics and comparisons of meansand proportions. …

Awareness About Reproductive Health And Rights Among Students Of A Public University In Karachi, Pakistan: A Cross Sectional Study, Naheed Nabi, Waris Qidwai, Farhat Batool,, Iqbal Azam

Department of Family Medicine

Objective: To determine the knowledge, attitude and practices of Karachi University students about reproductive health and rights.
Design: Cross sectional study Methods: A survey was conducted from February to May 2005 to determine the understanding and knowledge related to reproductive health and rights among the students of the department of Biochemistry, University of Karachi, Pakistan. A pre-coded questionnaire was developed and pre-tested. The questionnaire was introduced to those students, who agreed to participate in the study. Data collected was double entered and analyzed on SPSS and Epi-info latest version.
Results: Fifty five percent (55%) of participants believed …

Reducing Lung Disease In Cystic Fibrosis: Model Systems And Anti-Inflammatory Treatment, Scotty Mcglothlin Buff

MUSC Theses and Dissertations

Cystic fibrosis (CF), the most common lethal autosomal recessive disease in Caucasians resulting in a median life span of approximately 35 years, is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR). The primary cause of morbidity and mortality is respiratory failure caused by progressive obstructive lung disease. CF airway disease is characterized by the abundance of pro inflammatory cells, chemokines and cytokines with a deficiency of regulatory/anti-inflammatory cytokine interleukin 10 (lL10). We hypothesized that CF airway obstruction originates from excessive inflammation and gene transfer of IL-I0 would decrease inflammation in the airways of mice infected with Pseudomonas …

Long-Distance Three-Color Neuronal Tracing In Fixed Tissue Using Neurovue Dyes, Heather Jensen Smith, Brian Gray, Katharine Muirhead, Betsy Ohlsson-Wilhelm, Bernd Fritzsch

Journal Articles: Eppley Institute

Dissecting development of neuronal connections is critical for understanding neuronal function in both normal and diseased states. Charting the development of the multitude of connections is a monumental task, since a given neuron typically receives hundreds of convergent inputs from other neurons and provides divergent outputs for hundreds of other neurons. Although progress is being made utilizing various mutants and/or genetic constructs expressing fluorescent proteins like GFP, substantial work remains before a database documenting the development and final location of the neuronal pathways in an adult animal is completed. The vast majority of developing neurons cannot be specifically labeled with …

Lateral Wall Protein Content Mediates Alterations In Cochlear Outer Hair Cell Mechanics Before And After Hearing Onset, Heather Jensen Smith, Richard Hallworth

Journal Articles: Eppley Institute

Specialized outer hair cells (OHCs) housed within the mammalian cochlea exhibit active, nonlinear, mechanical responses to auditory stimulation termed electromotility. The extraordinary frequency resolution capacity of the cochlea requires an exquisitely equilibrated mechanical system of sensory and supporting cells. OHC electromotile length change, stiffness, and force generation are responsible for a 100-fold increase in hearing sensitivity by augmenting vibrational input to non-motile sensory inner hair cells. Characterization of OHC mechanics is crucial for understanding and ultimately preventing permanent functional deficits due to overstimulation or as a consequence of various cochlear pathologies. The OHCs' major structural assembly is a highly-specialized lateral …

Neurosurgeons And Electrocautery, S. Ather Enam

Section of Neurosurgery

Abstract are not provided by the author/publisher

Psychiatric Rating Scales In Urdu: A Systematic Review, Syed Ahmer, Rafey A. Faruqui, Anita Aijaz

Department of Psychiatry

Background: Researchers setting out to conduct research employing questionnaires in non-English speaking populations need instruments that have been validated in the indigenous languages. In this study we have tried to review the literature on the status of cross-cultural and/or criterion validity of all the questionnaires measuring psychiatric symptoms available in Urdu language.Methods: A search of Medline, Embase, PsycINFO and http://www.pakmedinet.com was conducted using the search terms; Urdu psychiatric rating scale, and Urdu and Psychiatry. References of retrieved articles were searched. Only studies describing either cross-cultural or criterion validation of a questionnaire in Urdu measuring psychiatric symptoms were included.Results: Thirty two …

Mapping Exercise Of Mental Health Research And Researchers In Pakistan, Haider A. Naqvi, Murad M. Khan

Department of Psychiatry

Objective: To systematically identify mental health research and researchers in Pakistan. Subsidiary objectives were to identify methodologies of studies published in the indexed journals along with their country wide mean impact factor.
Methods: A systematic search strategy using key words related to neuropsychiatry was carried out to identify various studies published in Indexed and Non-indexed databases.
Results: We identified 108 studies from Indexed data bases (77.8% Medline; 22.2% PsychInfo). Beside these, 51 studies were also identified from non-indexed databases. Among the indexed articles, 97 (89.8%) were Journal articles while 10 were other type of documents--there were 3 clinical trials of …

Primary Care Research: Opportunities And Challenges, Waris Qidwai

Department of Family Medicine

No abstract provided.

The Status Of Childhood Lead Poisoning And Prevention In Nevada, Usa, Anne Rothweiler, Elena E. Cabb, Shawn Gerstenberger

Environmental & Global Health Faculty Research

One of the first steps in addressing the problem of childhood lead poisoning is to identify the possible sources of exposure in specific communities and target high-risk populations with appropriate interventions. Due to several factors, such as lack of funding and lack of blood lead reporting, little information exists regarding the occurrence of childhood lead poisoning and the prevalence of potential exposure sources in the state of Nevada. Following the recent establishment of a Nevada-based Lead Poisoning Program, we compiled the most current information available on Nevadans, and use this knowledge to suggest future research objectives and outreach activities for …

Chest Radiographs In Acute Pulmonary Embolism, Ali Bin Sarwar Zubairi, Shahid Javed Husain, Muhammad Irfan, Kulsoom Fatima, Muhammad Atif Zubairi, Muhammad Islam

Section of Pulmonary & Critical Care

Background: Pulmonary embolism (PE) is a serious clinical entity carrying significant morbidity and mortality. Clinically, it is a difficult condition to diagnose and remains under treated condition in Pakistan due to non-availability of objective tests and lack of awareness among physicians.This study was conducted to determine the chest radiographic presentation in known cases of acute PE presenting to a tertiary care hospital.
Methods: Hospital records of patients with a diagnosis of acute PE were reviewed from June 2000 until June 2004. Fifty diagnosed cases of acute PE on Spiral Computed tomography (CT) of the chest demonstrating an intraluminal-filling defect were …

Understanding The Relationship Between The Emotional Competence Inventory - University Edition And The Myers-Briggs Type Indicator In The Admission Of College Students To An Orthopaedics-Based Honors Program, Carrie A. Yocum

Dissertations

Problem

The Orthopaedic Scholar Institute (OSI) Team realized its need for a more objective selection and admission process that, as much as possible, quantified the characteristics desired in OSI students rather than relying solely on referral perception, intuition, and an interview, but it did not have a clear method or approach to do so. Administering standardized inventories that highlighted these desired characteristics and aided in the selection and admission process seemed to be an objective approach to obtain more quantifiable data. The problem for my study was, therefore, whether the Myers- Briggs Type Indicator (MBTI) alone could measure a student’s …

Modulation Of Retroviral Restriction And Proteasome Inhibitor-Resistant Turnover By Changes In The Trim5Α B-Box 2 Domain, Felipe Diaz-Griffero, Alak Kar, Michel Perron, Shi-Hua Xiang, Hassan Javanbakht, Xing Li, Joseph Sodroski

Nebraska Center for Virology: Faculty Publications

An intact B-box 2 domain is essential for the antiretroviral activity of TRIM5α. We modeled the structure of the B-box 2 domain of TRIM5α based on the existing three-dimensional structure of the B-box 2 domain of human TRIM29. Using this model, we altered the residues predicted to be exposed on the surface of this globular structure. Most of the alanine substitutions in these residues exerted little effect on the antiretroviral activity of human TRIM5αhu or rhesus monkey TRIM5α_rh. However, alteration of arginine 119 of TRIM5α_hu or the corresponding arginine 121 of TRIM5α_rh diminished the abilities of …

A Model Of Late Long-Term Potentiation Simulates Aspects Of Memory Maintenance, Paul Smolen

Faculty, Staff and Student Publications

Late long-term potentiation (L-LTP) denotes long-lasting strengthening of synapses between neurons. L-LTP appears essential for the formation of long-term memory, with memories at least partly encoded by patterns of strengthened synapses. How memories are preserved for months or years, despite molecular turnover, is not well understood. Ongoing recurrent neuronal activity, during memory recall or during sleep, has been hypothesized to preferentially potentiate strong synapses, preserving memories. This hypothesis has not been evaluated in the context of a mathematical model representing ongoing activity and biochemical pathways important for L-LTP. In this study, ongoing activity was incorporated into two such models - …

A Non-Pharmacological Intervention To Manage Behavioral And Psychological Symptoms Of Dementia And Reduce Caregiver Distress: Design And Methods Of Project Act3., Laura N Gitlin, Laraine Winter, Marie P Dennis, Walter W Hauck

Center for Applied Research on Aging and Health Research Papers

Project ACT is a randomized controlled trial designed to test the effectiveness of a non-pharmacological home-based intervention to reduce behavioral and psychological symptoms of dementia (BPSD) and caregiver distress. The study targets 272 stressed racially diverse family caregivers providing in-home care to persons with moderate stage dementia with one or more behavioral disturbances. All participants are interviewed at baseline, 4-months (main trial endpoint), and 6-months (maintenance). The four-month intervention involves up to 13 visits from an occupational therapist who works with families to problem-solve potential triggers (communication style, environmental clutter) contributing to behaviors, and instruct in strategies to reduce caregiver …

Implementation Of An Antibiotic Nomogram Improves Postoperative Antibiotic Utilization And Safety In Patients Undergoing Coronary Artery Bypass Grafting, Thomas J. Papadimos, Jennifer L. Grabarczyk, Daniel F. Grum, James P. Hofmann, Alan P. Marco, Sadik A. Khuder

Anesthesiology Faculty Publications

Background

Routine, initial, empiric vancomycin dosing by clinicians in postoperative coronary artery bypass grafting (CABG) patients was identified as a potential patient safety issue in the Cardiovascular Intensive Care Unit (CVICU) because the rate of postoperative acute renal insufficiency (ARI) and average patient Body Mass Index (BMI) > 35 kg/m2 were significantly higher in our institution than those of the Society of Thoracic Surgeons (STS) database. A vancomycin dosing nomogram was derived from the local patient population in the attempt to improve patient safety by convincing clinicians to use an evidence-based approach to vancomycin prescription.

Methods

We analyzed two different treatment …

Evidence Against Roles For Phorbol Binding Protein Munc13-1, Adam Adaptor Eve-1, Or Vesicle Trafficking Phosphoproteins Munc18 Or Nsf As Phospho-State-Sensitive Modulators Of Phorbol/Pkc-Activated Alzheimer App Ectodomain Shedding., Annat F Ikin, Mirsada Causevic, Steve Pedrini, Lyndsey S Benson, Joseph D Buxbaum, Toshiharu Suzuki, Simon Lovestone, Shigeki Higashiyama, Tomas Mustelin, Robert D Burgoyne, Sam Gandy

Farber Institute for Neuroscience Faculty Papers

ABSTRACT: BACKGROUND: Shedding of the Alzheimer amyloid precursor protein (APP) ectodomain can be accelerated by phorbol esters, compounds that act via protein kinase C (PKC) or through unconventional phorbol-binding proteins such as Munc13-1. We have previously demonstrated that application of phorbol esters or purified PKC potentiates budding of APP-bearing secretory vesicles at the trans-Golgi network (TGN) and toward the plasma membrane where APP becomes a substrate for enzymes responsible for shedding, known collectively as alpha-secretase(s). However, molecular identification of the presumptive "phospho-state-sensitive modulators of ectodomain shedding" (PMES) responsible for regulated shedding has been challenging. Here, we examined the effects on …

Poor Glycaemic Control Is The Major Factor Associated With Increased Frequency Of Gastrointestinal Symptoms In Patients With Diabetes Mellitus, Shahab Abid, Wasim Jafri, Firdous Jahan, Fauziah Rabbani, Najmul Islam, Masood H. Khan, Rana Masood

Department of Medicine

Objective:To compare the GI symptoms in diabetic patients with controls and its relationship with the complications, duration of diabetes and glycaemic control. Methods:Consecutive patients were prospectively enrolled in to two groups. Group I (diabetic patients) and Group II (non-diabetic, Controls). Patient's characteristics, demographic profiles and GI symptoms were evaluated on a questionnaire. Groups were compared for differences in various GI symptoms. Group I was further analyzed for the relationship between GI symptoms with complications, duration of diabetes andglycaemic control.
Results:Atotal of 514 patients were enrolled 250 were diabetics (group I) and 264 were non-diabetics (groupII). Mean age …

Dengue Virus Serotype 3, Karachi, Pakistan, Bushra Jamil, Rumina Hasan, Afia Zafar, Kevin Bewley, John Chamberlain, Valerie Mioulet, Moira Rowlands, Roger Hewson

Department of Medicine

No abstract provided.

Chest Radiographs In Acute Pulmonary Embolism, Ali Bin Sarwar Zubairi, Shahid Javed Husain, Muhammad Irfan, Kulsoom Fatima, Muhammad Atif Zubairi, Muhammad Islam

Department of Medicine

Background: Pulmonary embolism (PE) is a serious clinical entity carrying significant morbidity and mortality. Clinically, it is a difficult condition to diagnose and remains under treated condition in Pakistan due to non-availability of objective tests and lack of awareness among physicians. This study was conducted to determine the chest radiographic presentation in known cases of acute PE presenting to a tertiary care hospital.
Methods: Hospital records of patients with a diagnosis of acute PE were reviewed from June 2000 until June 2004. Fifty diagnosed cases of acute PE on Spiral Computed tomography (CT) of the chest demonstrating an intraluminal-filling defect …

Prevalence And Predictors Of Smokeless Tobacco Use Among High-School Males In Karachi, Pakistan, S Rozi, S Akhtar

Community Health Sciences

A cross-sectional study was conducted in 3 towns in Karachi, Pakistan to investigate the prevalence of and factors associated with the use of smokeless tobacco among 772 high-school adolescent males. A structured questionnaire collected data on sociodemographic factors and history of cigarette and smokeless tobacco use. Prevalence of smokeless tobacco use (gutka, snuff, niswar) was 16.1% (95% CI: 13.5%-18.9%). On multiple logistic regression analysis, the factors significantly related to smokeless tobacco use among the sample were: attending government school [adjusted odds ratio (OR) 6.3], smoking cigarettes (OR 3.2), not seeing anti-tobacco advertisements (OR 1.5), family history of tobacco use (OR …

Outcomes Of Peginterferon Alfa-2a And Ribavirin Combination Therapy In A Resident-Initiated, Multidisciplinary, Hepatitis C Clinic, Nicole M. Agostino Do, Erini Vasiliadis Do, K Nadeem Ahmed Md, Suzanne J. Templer Do, Edward R. Norris Md, Fapa, Fapm, Charles M. Brooks Md, Eric J. Gertner Md, Mph, Joseph L. Yozviak Do, Facp

Department of Medicine

No abstract provided.