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Articles 1 - 17 of 17
Full-Text Articles in Medical Sciences
Compensation Crisis Related To The Onsite Adequacy Evaluation During Fna Procedures-Urgent Proactive Input From Cytopathology Community Is Critical To Establish Appropriate Reimbursement For Cpt Code 88172 (Or Its New Counterpart If Introduced In The Future), Inderpreet Dhillon, Martha B. Pitman, Richard M. Demay, Pamela Archuletta, Vinod B. Shidham
Compensation Crisis Related To The Onsite Adequacy Evaluation During Fna Procedures-Urgent Proactive Input From Cytopathology Community Is Critical To Establish Appropriate Reimbursement For Cpt Code 88172 (Or Its New Counterpart If Introduced In The Future), Inderpreet Dhillon, Martha B. Pitman, Richard M. Demay, Pamela Archuletta, Vinod B. Shidham
Department of Pathology
The confusion centered around appropriate use of the CPT billing code 88172 is addressed in the commentary from the Economic and Government Affairs Committee of the American Society of Cytopathology (ASC) who have written a timely commentary in this issue of Cytojournal,“Adequate Reimbursement is Crucial to Support Cost-Effective Rapid Onsite Cytopathology Evaluations”. Currently, lack of standardized use within and between pathology departments is stirring unhealthy practices of denying reimbursements for this critical and legitimate cytopathology service. This editorial discusses the important concerns raised in this commentary and recommends immediate corrective action. (See also Al-Abbadi MA, et al. Adequate reimbursement is …
Activation Of Tumor Cell Death Program By Targeting The Ubiquitin-Proteasome Pathway: Significance In Cancer Treatment And Prevention, Michael Joseph Frezza
Activation Of Tumor Cell Death Program By Targeting The Ubiquitin-Proteasome Pathway: Significance In Cancer Treatment And Prevention, Michael Joseph Frezza
Wayne State University Dissertations
ACTIVATION OF TUMOR CELL DEATH PROGRAM BY TARGETING THE UBIQUITIN-PROTEASOME PATHWAY: SIGNIFICANCE IN CANCER TREATMENT AND PREVENTION
by
MICHAEL FREZZA
August 2010
Advisor: Dr. Q. Ping Dou
Major: Cancer Biology
Degree: Doctor of Philosophy
The ubiquitin-proteasome pathway serves as a quality control mechanism to regulate the degradation of intracellular proteins involved in a wide array of cellular processes including tumorigeneis. Thus targeting key features of protein turnover responsible for the growth and proliferation of cancer have emerged as a favorable approach in cancer therapy. Both in vitro and in vivo experimental and clinical results have demonstrated the potential use of …
Comparison Of Mitotic Cell Death By Chromosome Fragmentation To Premature Chromosome Condensation, Joshua B. Stevens, Batoul Y. Abdallah, Sarah M. Regan, Guo Liu, Steven W. Bremer, Christine J. Ye, Henry H. Heng
Comparison Of Mitotic Cell Death By Chromosome Fragmentation To Premature Chromosome Condensation, Joshua B. Stevens, Batoul Y. Abdallah, Sarah M. Regan, Guo Liu, Steven W. Bremer, Christine J. Ye, Henry H. Heng
Wayne State University Associated BioMed Central Scholarship
Abstract
Mitotic cell death is an important form of cell death, particularly in cancer. Chromosome fragmentation is a major form of mitotic cell death which is identifiable during common cytogenetic analysis by its unique phenotype of progressively degraded chromosomes. This morphology however, can appear similar to the morphology of premature chromosome condensation (PCC) and thus, PCC has been at times confused with chromosome fragmentation. In this analysis the phenomena of chromosome fragmentation and PCC are reviewed and their similarities and differences are discussed in order to facilitate differentiation of the similar morphologies. Furthermore, chromosome pulverization, which has been used almost …
Loss Of The Sin3 Transcriptional Corepressor Results In Aberrant Mitochondrial Function, Valerie L. Barnes, Bethany S. Strunk, Icksoo Lee, Maik Hüttemann, Lori A. Pile
Loss Of The Sin3 Transcriptional Corepressor Results In Aberrant Mitochondrial Function, Valerie L. Barnes, Bethany S. Strunk, Icksoo Lee, Maik Hüttemann, Lori A. Pile
Wayne State University Associated BioMed Central Scholarship
Abstract
Background
SIN3 is a transcriptional repressor protein known to regulate many genes, including a number of those that encode mitochondrial components.
Results
By monitoring RNA levels, we find that loss of SIN3 inDrosophilacultured cells results in up-regulation of not only nuclear encoded mitochondrial genes, but also those encoded by the mitochondrial genome. The up-regulation of gene expression is accompanied by a perturbation in ATP levels in SIN3-deficient cells, suggesting that the changes in mitochondrial gene expression result in altered mitochondrial activity. In support of the hypothesis that SIN3 is necessary for normal mitochondrial function, yeastsin3null mutants exhibit very poor …
The Globin Gene Family Of The Cephalochordate Amphioxus: Implications For Chordate Globin Evolution, Bettina Ebner, Georgia Panopoulou, Serge N. Vinogradov, Laurent Kiger, Michael C. Marden, Thorsten Burmester, Thomas Hankeln
The Globin Gene Family Of The Cephalochordate Amphioxus: Implications For Chordate Globin Evolution, Bettina Ebner, Georgia Panopoulou, Serge N. Vinogradov, Laurent Kiger, Michael C. Marden, Thorsten Burmester, Thomas Hankeln
Wayne State University Associated BioMed Central Scholarship
Abstract
Background
The lancelet amphioxus (Cephalochordata) is a close relative of vertebrates and thus may enhance our understanding of vertebrate gene and genome evolution. In this context, the globins are one of the best studied models for gene family evolution. Previous biochemical studies have demonstrated the presence of an intracellular globin in notochord tissue and myotome of amphioxus, but the corresponding gene has not yet been identified. Genomic resources of Branchiostoma floridae now facilitate the identification, experimental confirmation and molecular evolutionary analysis of its globin gene repertoire.
Results
We show that B. floridae harbors at least fifteen paralogous globin genes, …
Mapping Haplotype-Haplotype Interactions With Adaptive Lasso, Ming Li, Roberto Romero, Wenjiang J. Fu, Yuehua Cui
Mapping Haplotype-Haplotype Interactions With Adaptive Lasso, Ming Li, Roberto Romero, Wenjiang J. Fu, Yuehua Cui
Wayne State University Associated BioMed Central Scholarship
Abstract
Background
The genetic etiology of complex diseases in human has been commonly viewed as a complex process involving both genetic and environmental factors functioning in a complicated manner. Quite often the interactions among genetic variants play major roles in determining the susceptibility of an individual to a particular disease. Statistical methods for modeling interactions underlying complex diseases between single genetic variants (e.g. single nucleotide polymorphisms or SNPs) have been extensively studied. Recently, haplotype-based analysis has gained its popularity among genetic association studies. When multiple sequence or haplotype interactions are involved in determining an individual's susceptibility to a disease, it …
Pulmonary Carcinosarcoma Initially Presenting As Invasive Aspergillosis: A Case Report Of Previously Unreported Combination, Ariyo O. Olobatoke, Doina David, Wasif Hafeez, Thien Van, Husain A. Saleh
Pulmonary Carcinosarcoma Initially Presenting As Invasive Aspergillosis: A Case Report Of Previously Unreported Combination, Ariyo O. Olobatoke, Doina David, Wasif Hafeez, Thien Van, Husain A. Saleh
Wayne State University Associated BioMed Central Scholarship
Abstract
Carcinosarcoma of the lung is a malignant tumor composed of a mixture of carcinoma and sarcoma elements. The carcinomatous component is most commonly squamous followed by adenocarcinoma. The sarcomatous component commonly comprises the bulk of the tumor and shows poorly differentiated spindle cell features. Foci of differentiated sarcomatous elements such as chondrosarcoma and osteosarcoma may be seen. Aspergillus pneumonia is the most common form of invasive aspergillosis and occurs mainly in patients with malignancy, immunocompromizing or debilitating diseases. Patients with Aspergillus pneumonia present with fever, cough, chest pain and occasionally hemoptysis. Tissue examination is the most reliable method for …
Molecular And Therapeutic Implications Of Notch1 Signaling In Pediatric T-Cell Acute Lymphoblastic Leukemia, Amanda Larson Gedman
Molecular And Therapeutic Implications Of Notch1 Signaling In Pediatric T-Cell Acute Lymphoblastic Leukemia, Amanda Larson Gedman
Wayne State University Dissertations
T-cell acute lymphoblastic leukemia (T-ALL) accounts for 15% of pediatric ALL cases and is associated with early relapse and inferior outcome. The poorer prognosis of T-ALL compared to B-precursor ALL may in part reflect the lack of unique features on which to base therapy. NOTCH1 mutations are of particular interest since these were reported in 37-71% of T-ALLs. The prognostic value of NOTCH1 mutations remains controversial as both favorable and unfavorable associations were reported, whereas in other studies, there were no associations between NOTCH1 mutations and treatment outcome. We explored the impact of mutations in NOTCH1, FBW7 and PTEN on …
Immunomodulatory Effect Of Host And Fungal Eicosanoids During Host-Pathogen Interactions With Candida Albicans, Gitanjali Kundu
Immunomodulatory Effect Of Host And Fungal Eicosanoids During Host-Pathogen Interactions With Candida Albicans, Gitanjali Kundu
Wayne State University Dissertations
Candida albicans, an opportunistic fungal pathogen, poses a significant clinical threat to immunocompromised patients. Diseases associated with this fungus ranges from superficial mucosal infection to life-threatening systemic candidiasis. The mechanisms by which Candida persists at mucosal surfaces in the face of an adaptive response are unclear. Candida produces immunomodulatory oxylipins that cross-react functionally with host eicosanoids, which are considered to play important role in regulating innate and adaptive immune responses. Our objective was to characterize the role of prostaglandins produced by the host and this fungus during host pathogen interactions, both in vitro with dendritic cells (DCs) and macrophages, and …
Raman Spectroscopic Modeling Of T- Lymphocyte Activation And Detection Of Acute Renal Allograft Rejection, Kristian L. Brown
Raman Spectroscopic Modeling Of T- Lymphocyte Activation And Detection Of Acute Renal Allograft Rejection, Kristian L. Brown
Wayne State University Dissertations
ABSTRACT
RAMAN SPECTROSCOPIC MODELING OF T-LYMPHOCYTE ACTIVATION AND DETECTION OF ACUTE RENAL ALLOGRAFT REJECTION
By
KRISTIAN L. BROWN
2010
Advisor: Gregory Auner, PhD
Major: Biomedical Engineering
Degree: Doctor of Philosophy
Despite the advances made in the area of kidney transplantation, the disparity between the demand and available donated organs remains a dominant and unresolved issue. Given the paucity of available renal allografts the preservation of existing grafts is vital. One factor that has negatively impacted renal allograft survival is acute rejection (AR). Traditionally, kidney transplant centers have used elevations in serum creatinine as a screening tool for detecting AR. However, …
Beyond The Dvh - Spatial And Biological Radiotherapy Treatment Planning, Bo Zhao
Beyond The Dvh - Spatial And Biological Radiotherapy Treatment Planning, Bo Zhao
Wayne State University Dissertations
Purpose: Both spatial and biological information are necessary in order to perform true optimization of a treatment plan and for predicting clinical outcome. The goal of this work is to develop an enhanced treatment plan evaluation tool which incorporates biological parameters and retains spatial dose information.
Methods: A software system named SABER (Spatial And Biological Evaluation for Radiotherapy) is developed which provides biological plan evaluation with a novel combination of features. It incorporates hyperradiosensitivity using the induced-repair model and applies the new concept of Dose Convolution Filter (DCF) to simulate dose wash-out …
Defensins In Ocular Immunity, Minhao Wu
Defensins In Ocular Immunity, Minhao Wu
Wayne State University Dissertations
Corneal infection with P. aeruginosa results in corneal perforation in susceptible
B6, but not resistant BALB/c mice. This study explored their role mBD 1-4 in corneal
infection, and their potential synergy. Immunostaining and real-time RT-PCR data
demonstrated that their expression was either constitutive (mBD1 and mBD2) or
inducible (mBD3 and mBD4) in normal BALB/c and B6 corneas, and disparately
regulated in BALB/c vs B6 corneas after infection. Knock down studies using siRNA
treatment indicated that mBD2 and mBD3, but neither mBD1 nor mBD4, is required in
ocular defense. Moreover, in vivo studies demonstrated individual and combined effects
of mBD2 and …
Regulation Of Neuronal Excitability: New Mechanisms For Slow Afterhyperpolarization Activation And Modulation, Claudio Alberto Villalobos
Regulation Of Neuronal Excitability: New Mechanisms For Slow Afterhyperpolarization Activation And Modulation, Claudio Alberto Villalobos
Wayne State University Dissertations
One of the most characteristic features of pyramidal cells in the prefrontal cortex (PFC) is that they present a slow afterhyperpolarizing current (IsAHP) that plays a critical role in the regulation of neuronal excitability. This current is modulated by receptors acting via GΑq/11 G proteins, thus it is thought that neurotransmitters regulate neuronal excitability through the inhibition of this current. IsAHP is known to be mediated by calcium-activated potassium channels, however, neither the identity of the channel underlying this current nor its mechanism of activation are yet well understood. Recent reports have questioned a direct role …
Effect Of Dietary Folate Restriction On Colon Carcinogenesis In Dna Polymerase Β Haploinsufficient Mice, Lisa F. Ventrella Lucente
Effect Of Dietary Folate Restriction On Colon Carcinogenesis In Dna Polymerase Β Haploinsufficient Mice, Lisa F. Ventrella Lucente
Wayne State University Dissertations
The data presented in this research is central to establishing the role that the base excision repair pathway (BER) plays in the development and progression of colon cancer when dietary folate is deficient. Both cellular folate restriction and BER deficiencies have been shown to result in the accumulation of endogenous damage and lesions that could eventually develop into carcinogenesis. In this study, a dietary folate deficiency (FD) resulted in a significant increase in aberrant crypt foci (ACF) formation and triggered liver tumorogenesis in wildtype (WT) animals, as did a BER deficiency in DNA polymerase Β haploinsufficient (Β-pol+/-) mice exposed to …
The Interictal State In Epilepsy And Behavior, Daniel Tice Barkmeier
The Interictal State In Epilepsy And Behavior, Daniel Tice Barkmeier
Wayne State University Dissertations
Epilepsy is one of the most common neurological diseases, affecting up to 1% of the world population. Epilepsy remains poorly understood and there are currently no medications to cure it. Patients with epilepsy have both seizures as well as another type of abnormal activity between seizures, known as interictal spikes. Interictal spikes have thus far been poorly researched, yet growing evidence supports an important role for them in epilepsy. In this project, we first show the high variability between reviewers in marking interictal spikes on intracranial EEG, and then develop and test an automated detection method to solve this problem. …
Comparison Of Affective Analgesia And Conditioned Place Preference Following Cholinergic Activation Of, Elena Schifirnet
Comparison Of Affective Analgesia And Conditioned Place Preference Following Cholinergic Activation Of, Elena Schifirnet
Wayne State University Dissertations
Activation of the dopaminergic mesolimbic reward circuitry that originates in the ventral tegmental area (VTA) is postulated to preferentially suppress affective reactions to noxious stimuli (affective analgesia, AA). VTA dopamine neurons are activated via cholinergic inputs, and we have observed that microinjections of the acetylcholine agonist carbachol suppressed vocalizations of rats that occur following administration of brief (1 sec) tail-shocks (vocalization afterdischarges = VAD). VADs are a validated rodent model of pain affect. In addition, the capacity of carbachol to support reinforcement appears to be regionally dependent within VTA. Ikemoto and Wise (2002) reported that carbachol was self-administered in the …
Development And Validation Of A Measurement Scale To Analyze The Environment For Evidence-Based Medicine Learning And Practice By Medical Residents, Fangqiong Mi
Wayne State University Dissertations
A growing number of residency programs are instituting curricula to include the component of evidence-based medicine (EBM) principles and process. However, these curricula may not be able to achieve the optimal learning outcomes, perhaps because various contextual factors are often overlooked when EBM training is being designed, developed, and implemented. The purpose of the study was to develop and validate an instrument, the EBM Environment Scale, to analyze the environment for EBM learning and practice as perceived by medical residents.
The development of the EBM Environment Scale underwent the process of content domain identification, item generation, review by content experts …