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  1. Article ; Online: Atrial Fibrillation/Atrial Flutter Tachy-Cardiomyopathy: New Observations on Cardiac MRI and Treatment.

    Wagner, Savahanna / Chaudhry, Sunit-Preet / Ali, Saad / Arman, Huseyin E / Padanilam, Benzy J / Gilge, Jasen L / Prystowsky, Eric N

    JACC. Clinical electrophysiology

    2022  Volume 9, Issue 3, Page(s) 416–418

    MeSH term(s) Humans ; Atrial Fibrillation/diagnostic imaging ; Atrial Fibrillation/therapy ; Atrial Flutter/diagnostic imaging ; Heart Atria ; Cardiomyopathies/diagnostic imaging ; Magnetic Resonance Imaging
    Language English
    Publishing date 2022-11-30
    Publishing country United States
    Document type Letter
    ZDB-ID 2846739-5
    ISSN 2405-5018 ; 2405-500X ; 2405-500X
    ISSN (online) 2405-5018 ; 2405-500X
    ISSN 2405-500X
    DOI 10.1016/j.jacep.2022.09.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Kruppel-family zinc finger proteins as emerging epigenetic biomarkers in head and neck squamous cell carcinoma.

    Pearson, Patrick / Smith, Kendra / Sood, Nilita / Chia, Elizabeth / Follett, Alicia / Prystowsky, Michael B / Kirby, Simon / Belbin, Thomas J

    Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale

    2023  Volume 52, Issue 1, Page(s) 41

    Abstract: Background: Krüppel-type zinc finger protein genes located on chromosome 19q13 are aberrantly hypermethylated with high frequency in all anatomic sub-sites of head and neck cancers as well as other epithelial tumours resulting in decreased expression.!## ...

    Abstract Background: Krüppel-type zinc finger protein genes located on chromosome 19q13 are aberrantly hypermethylated with high frequency in all anatomic sub-sites of head and neck cancers as well as other epithelial tumours resulting in decreased expression.
    Methods: We examined prognostic significance of ZNF154 and ZNF132 expression and DNA methylation in independent patient cohort of about 500 head and neck cancer patients in the Cancer Genome Atlas (TCGA). We also overexpressed these genes in HEK-293 cells, as well as the oral cancer cell line UM-SCC-1.
    Results: In 20 patients from the TCGA cohort of HNSCC patients where ZNF154 and ZNF132 DNA methylation and RNA expression could be compared in tumor and adjacent normal tissue, there was increased DNA methylation and decreased expression of both ZNF154 and ZNF132 in primary tumours. Low ZNF154 and low ZNF132 expression were associated with shorter overall survival in both head and neck squamous cell carcinoma (HNSCC) and lung adenocarcinoma (LUAC patients). While expression of these proteins in HEK-293 cells produced full-length protein, only truncated copies could be expressed in head and neck cancer cells (UM-SCC-1). The truncated version of ZNF154 protein increased doubling time and reduced cell migration in UM-SCC-1 cancer cells.
    Conclusions: Both ZNF132 and ZNF154 represent novel clinically significant biomarkers in head and neck cancer with potential tumour suppressive properties. Future studies will address the underlying molecular mechanisms by which ZNF154 expression in HNSCC contributes to the control of cell growth and migration.
    MeSH term(s) Humans ; Squamous Cell Carcinoma of Head and Neck/genetics ; HEK293 Cells ; Head and Neck Neoplasms/genetics ; Prognosis ; Biomarkers, Tumor/genetics ; Epigenesis, Genetic ; Zinc Fingers/genetics ; Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; Kruppel-Like Transcription Factors/genetics
    Chemical Substances Biomarkers, Tumor ; ZNF154 protein, human ; Kruppel-Like Transcription Factors
    Language English
    Publishing date 2023-05-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2434004-2
    ISSN 1916-0216 ; 1916-0208 ; 0381-6605
    ISSN (online) 1916-0216
    ISSN 1916-0208 ; 0381-6605
    DOI 10.1186/s40463-023-00640-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Direct measurement of vertical forces shows correlation between mechanical activity and proteolytic ability of invadopodia.

    Dalaka, E / Kronenberg, N M / Liehm, P / Segall, J E / Prystowsky, M B / Gather, M C

    Science advances

    2020  Volume 6, Issue 11, Page(s) eaax6912

    Abstract: Mechanobiology plays a prominent role in cancer invasion and metastasis. The ability of a cancer to degrade extracellular matrix (ECM) is likely connected to its invasiveness. Many cancer cells form invadopodia-micrometer-sized cellular protrusions that ... ...

    Abstract Mechanobiology plays a prominent role in cancer invasion and metastasis. The ability of a cancer to degrade extracellular matrix (ECM) is likely connected to its invasiveness. Many cancer cells form invadopodia-micrometer-sized cellular protrusions that promote invasion through matrix degradation (proteolysis). Although it has been hypothesized that invadopodia exert mechanical force that is implicated in cancer invasion, direct measurements remain elusive. Here, we use a recently developed interferometric force imaging technique that provides piconewton resolution to quantify invadopodial forces in cells of head and neck squamous carcinoma and to monitor their temporal dynamics. We compare the force exerted by individual protrusions to their ability to degrade ECM and investigate the mechanical effects of inhibiting invadopodia through overexpression of microRNA-375. By connecting the biophysical and biochemical characteristics of invadopodia, our study provides a new perspective on cancer invasion that, in the future, may help to identify biomechanical targets for cancer therapy.
    MeSH term(s) Cell Line, Tumor ; Extracellular Matrix/metabolism ; Head and Neck Neoplasms/metabolism ; Head and Neck Neoplasms/pathology ; Humans ; MicroRNAs/metabolism ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasm Proteins/metabolism ; Podosomes/metabolism ; Podosomes/pathology ; Proteolysis ; RNA, Neoplasm/metabolism ; Squamous Cell Carcinoma of Head and Neck/metabolism ; Squamous Cell Carcinoma of Head and Neck/pathology
    Chemical Substances MIRN375 microRNA, human ; MicroRNAs ; Neoplasm Proteins ; RNA, Neoplasm
    Language English
    Publishing date 2020-03-11
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.aax6912
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Characterization of a Diverse Set of Conditionally Reprogrammed Head and Neck Cancer Cell Cultures.

    Ow, Thomas J / Mehta, Vikas / Li, Daniel / Thomas, Carlos / Shrivastava, Nitisha / Kawachi, Nicole / Gersten, Adam J / Zhu, Jing / Schiff, Bradley A / Smith, Richard V / Rosenblatt, Gregory / Augustine, Stelby / Prystowsky, Michael B / Yin, Shanye / Gavathiotis, Evripidis / Guha, Chandan

    The Laryngoscope

    2024  

    Abstract: Objective: To establish and characterize a diverse library of head and neck squamous cell cancer (HNSCC) cultures using conditional reprogramming (CR).: Methods: Patients enrolled on an IRB-approved protocol to generate tumor cell cultures using CR ... ...

    Abstract Objective: To establish and characterize a diverse library of head and neck squamous cell cancer (HNSCC) cultures using conditional reprogramming (CR).
    Methods: Patients enrolled on an IRB-approved protocol to generate tumor cell cultures using CR methods. Tumor and blood samples were collected and clinical information was recorded. Successful CR cultures were validated against banked reference tumors with short tandem repeat genotyping. Cell morphology was archived with photodocumentation. Clinical and demographic factors were evaluated for associations with successful establishment of CR culture. Human papilloma virus (HPV) genotyping, clonogenic survival, MTT assays, spheroid growth, and whole exome sequencing were carried out in selected cultures.
    Results: Forty four patients were enrolled, with 31 (70%) successful CR cultures, 32% derived from patients who identified as Black and 61% as Hispanic. All major head and neck disease sites were represented, including 15 (48%) oral cavity and 8 (26%) p16-positive oropharynx cancers. Hispanic ethnicity and first primary tumors (vs. second primary or recurrent tumors) were significantly associated with successful CR culture. HPV expression was conserved in CR cultures, including CR-024, which carried a novel HPV-69 serotype. CR cultures were used to test cisplatin responses using MTT assays. Previous work has also demonstrated these models can be used to assess response to radiation and can be engrafted in mouse models. Whole exome sequencing demonstrated that CR cultures preserved tumor mutation burden and driver mutations.
    Conclusion: CR culture is highly successful in propagating HNSCC cells. This study included a high proportion of patients from underrepresented minority groups.
    Level of evidence: Not Applicable Laryngoscope, 2024.
    Language English
    Publishing date 2024-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80180-x
    ISSN 1531-4995 ; 0023-852X
    ISSN (online) 1531-4995
    ISSN 0023-852X
    DOI 10.1002/lary.31236
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: When technology exceeds knowledge, is success a reasonable expectation?

    Prystowsky, E N

    Journal of cardiovascular electrophysiology

    2001  Volume 12, Issue 11, Page(s) 1284–1285

    MeSH term(s) Animals ; Atrial Fibrillation/surgery ; Catheter Ablation ; Heart Atria/pathology ; Heart Atria/surgery ; Heart Conduction System/pathology ; Heart Conduction System/surgery ; Humans
    Language English
    Publishing date 2001-11
    Publishing country United States
    Document type Comment ; Editorial
    ZDB-ID 1025989-2
    ISSN 1540-8167 ; 1045-3873
    ISSN (online) 1540-8167
    ISSN 1045-3873
    DOI 10.1046/j.1540-8167.2001.01284.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Primary and secondary prevention of sudden cardiac death: the role of the implantable cardioverter defibrillator.

    Prystowsky, E N

    Reviews in cardiovascular medicine

    2001  Volume 2, Issue 4, Page(s) 197–205

    Abstract: Sudden cardiac death (SCD) affects nearly 300,000 people each year in the U.S., and out-of-hospital rates for survival range from only 2% to 25%. A substantial reduction in SCD requires primary prevention through risk-stratification and secondary ... ...

    Abstract Sudden cardiac death (SCD) affects nearly 300,000 people each year in the U.S., and out-of-hospital rates for survival range from only 2% to 25%. A substantial reduction in SCD requires primary prevention through risk-stratification and secondary prevention of sustained ventricular tachycardia (VT-S) and ventricular fibrillation (VF). Because frequent premature ventricular complexes (PVCs) appeared to be associated with an increased risk for SCD in patients with significant ventricular dysfunction, it was thought that suppression of PVCs would prevent SCD. The implantable cardioverter defibrillator (ICD) electrically treats life-threatening VT-S and VF, and it can be implanted readily in the pectoral area. Two randomized, prospective, controlled trials demonstrated conclusively that the ICD is the treatment of choice in the primary prevention of SCD in patients with a previous MI. In addition, three randomized, controlled trials found the ICD to be superior to antiarrhythmic drugs in the secondary prevention of SCD. Physicians should learn to recognize patients who are candidates for the ICD and refer them to an electrophysiologist so that they can get this life-saving therapy.
    MeSH term(s) Anti-Arrhythmia Agents/therapeutic use ; Death, Sudden, Cardiac/prevention & control ; Defibrillators, Implantable/utilization ; Female ; Humans ; Male ; Primary Prevention/methods ; Prognosis ; Randomized Controlled Trials as Topic ; Sensitivity and Specificity ; Survival Analysis ; Tachycardia, Ventricular/diagnosis ; Tachycardia, Ventricular/mortality ; Tachycardia, Ventricular/therapy ; Treatment Outcome ; Ventricular Fibrillation/diagnosis ; Ventricular Fibrillation/mortality ; Ventricular Fibrillation/therapy
    Chemical Substances Anti-Arrhythmia Agents
    Language English
    Publishing date 2001
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2108910-3
    ISSN 1530-6550
    ISSN 1530-6550
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Cardioversion of atrial fibrillation to sinus rhythm: who, when, how, and why?

    Prystowsky, E N

    The American journal of cardiology

    2000  Volume 86, Issue 3, Page(s) 326–327

    MeSH term(s) Atrial Fibrillation/etiology ; Atrial Fibrillation/therapy ; Electric Countershock/methods ; Humans ; Patient Selection ; Treatment Outcome
    Language English
    Publishing date 2000-08-01
    Publishing country United States
    Document type Comment ; Editorial
    ZDB-ID 80014-4
    ISSN 1879-1913 ; 0002-9149
    ISSN (online) 1879-1913
    ISSN 0002-9149
    DOI 10.1016/s0002-9149(00)00924-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Management of atrial fibrillation: therapeutic options and clinical decisions.

    Prystowsky, E N

    The American journal of cardiology

    2000  Volume 85, Issue 10A, Page(s) 3D–11D

    Abstract: Atrial fibrillation (AF) is the most common, sustained tachyarrhythmia seen in clinical practice. Although it is not immediately life threatening, AF can cause troublesome symptoms and poses a risk of stroke. The patient's clinical status is often ... ...

    Abstract Atrial fibrillation (AF) is the most common, sustained tachyarrhythmia seen in clinical practice. Although it is not immediately life threatening, AF can cause troublesome symptoms and poses a risk of stroke. The patient's clinical status is often complicated by the presence of other cardiovascular or concomitant diseases. As a result, management of the patient with AF involves many questions and choices, all of which must be individualized. There are 3 general strategies for the management of patients with AF, including (1) restoration and maintenance of sinus rhythm, (2) control of ventricular rate, and (3) prevention of stroke. More than 1 strategy may be appropriate in some patients. Furthermore, either pharmacologic or nonpharmacologic options can be chosen in certain situations. Although some data from randomized clinical trials are available to aid in clinical decision-making, only the benefits of anticoagulation are supported by substantial evidence. This article explores practical approaches to several management issues and scenarios for which there are limited relevant clinical data. These include: (1) patient selection for ventricular rate control and assessment of treatment, (2) choice of antiarrhythmic drug for maintenance of sinus rhythm, (3) inpatient versus outpatient initiation of therapy, (4) definition of antiarrhythmic drug success, (5) methods of transthoracic direct cardioversion, and (6) prediction and prevention of AF after cardiac surgery.
    MeSH term(s) Ambulatory Care ; Anti-Arrhythmia Agents/therapeutic use ; Anticoagulants/therapeutic use ; Atrial Fibrillation/drug therapy ; Atrial Fibrillation/physiopathology ; Atrial Fibrillation/therapy ; Catheter Ablation ; Electric Countershock ; Electrocardiography ; Hemodynamics ; Humans ; Treatment Outcome ; Warfarin/therapeutic use
    Chemical Substances Anti-Arrhythmia Agents ; Anticoagulants ; Warfarin (5Q7ZVV76EI)
    Language English
    Publishing date 2000-05-25
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 80014-4
    ISSN 1879-1913 ; 0002-9149
    ISSN (online) 1879-1913
    ISSN 0002-9149
    DOI 10.1016/s0002-9149(00)00908-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Screening and therapy for patients with nonsustained ventricular tachycardia.

    Prystowsky, E N

    The American journal of cardiology

    2000  Volume 86, Issue 9A, Page(s) 34K–39K

    Abstract: Patients with coronary artery disease, nonsustained ventricular tachycardia (VT), and left ventricular dysfunction have an increased risk for sudden cardiac death. Two randomized prospective trials, the Multicenter Unsustained Tachycardia Trial (MUSTT) ... ...

    Abstract Patients with coronary artery disease, nonsustained ventricular tachycardia (VT), and left ventricular dysfunction have an increased risk for sudden cardiac death. Two randomized prospective trials, the Multicenter Unsustained Tachycardia Trial (MUSTT) and the Multicenter Automatic Defibrillator Implantation Trial (MADIT), employed electrophysiologic testing for risk stratification in these types of patients. Individuals with inducible sustained VT were randomized to receive implantable cardioverter defibrillators (ICDs) or "conventional" therapy in MADIT, or were given no specific antiarrhythmic treatment vs electrophysiologically guided therapy in MUSTT. Both trials showed that overall mortality was reduced by approximately 50% with ICD therapy. In MUSTT, patients received no survival benefit with electrophysiologically guided drug treatment. MUSTT also demonstrated that untreated patients with inducible sustained VT had a worse prognosis than patients in whom sustained VT could not be initiated at electrophysiologic study. Even so, the data suggest that electrophysiologic testing alone may not be sensitive enough to identify broader groups of patients at risk for sudden death. In conclusion, patients with nonsustained VT who have coronary artery disease and a left ventricular ejection fraction <0.40 should undergo electrophysiologic testing, and if sustained VT is induced, ICD therapy should be prescribed.
    MeSH term(s) Coronary Artery Disease/complications ; Death, Sudden, Cardiac/etiology ; Death, Sudden, Cardiac/prevention & control ; Defibrillators, Implantable ; Diagnostic Techniques, Cardiovascular ; Electric Countershock/instrumentation ; Humans ; Mass Screening ; Randomized Controlled Trials as Topic ; Risk Assessment ; Stroke Volume/physiology ; Tachycardia, Ventricular/complications ; Tachycardia, Ventricular/diagnosis ; Tachycardia, Ventricular/therapy ; Ventricular Dysfunction, Left/complications ; Ventricular Dysfunction, Left/physiopathology
    Language English
    Publishing date 2000-11-02
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 80014-4
    ISSN 1879-1913 ; 0002-9149
    ISSN (online) 1879-1913
    ISSN 0002-9149
    DOI 10.1016/s0002-9149(00)01290-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Establishment of a diverse head and neck squamous cancer cell bank using conditional reprogramming culture methods.

    Li, Daniel / Thomas, Carlos / Shrivastava, Nitisha / Gersten, Adam / Gadsden, Nicholas / Schlecht, Nicolas / Kawachi, Nicole / Schiff, Bradley A / Smith, Richard V / Rosenblatt, Gregory / Augustine, Stelby / Gavathiotis, Evripidis / Burk, Robert / Prystowsky, Michael B / Guha, Chandan / Mehta, Vikas / Ow, Thomas J

    Journal of medical virology

    2022  Volume 95, Issue 2, Page(s) e28388

    Abstract: Most laboratory models of head and neck squamous cell cancer (HNSCC) rely on established immortalized cell lines, which carry inherent bias due to selection and clonality. We established a robust panel of HNSCC tumor cultures using a "conditional ... ...

    Abstract Most laboratory models of head and neck squamous cell cancer (HNSCC) rely on established immortalized cell lines, which carry inherent bias due to selection and clonality. We established a robust panel of HNSCC tumor cultures using a "conditional reprogramming" (CR) method, which utilizes a rho kinase inhibitor (Y-27632) and co-culture with irradiated fibroblast (J2 strain) feeder cells to support indefinite tumor cell survival. Sixteen CR cultures were successfully generated from 19 consecutively enrolled ethnically and racially diverse patients with HNSCC at a tertiary care center in the Bronx, NY. Of the 16 CR cultures, 9/16 were derived from the oral cavity, 4/16 were derived from the oropharynx, and 3/16 were from laryngeal carcinomas. Short tandem repeat (STR) profiling was used to validate culture against patient tumor tissue DNA. All CR cultures expressed ΔNp63 and cytokeratin 5/6, which are markers of squamous identity. Human papillomavirus (HPV) testing was assessed utilizing clinical p16 staining on primary tumors, reverse transcription polymerase chain reaction (RT-PCR) of HPV16/18-specific viral oncogenes E6 and E7 in RNA extracted from tumor samples, and HPV DNA sequencing. Three of four oropharyngeal tumors were p16 and HPV-positive and maintained HPV in culture. CR cultures were able to establish three-dimensional spheroid and murine flank and orthotopic tongue models. CR methods can be readily applied to all HNSCC tumors regardless of patient characteristics, disease site, and molecular background, providing a translational research model that properly includes patient and tumor diversity.
    MeSH term(s) Animals ; Humans ; Mice ; Carcinoma, Squamous Cell/pathology ; Cyclin-Dependent Kinase Inhibitor p16/metabolism ; DNA, Viral/genetics ; Head and Neck Neoplasms ; Human papillomavirus 16/genetics ; Human papillomavirus 18/genetics ; Papillomavirus Infections ; Squamous Cell Carcinoma of Head and Neck ; Biological Specimen Banks
    Chemical Substances Cyclin-Dependent Kinase Inhibitor p16 ; DNA, Viral
    Language English
    Publishing date 2022-12-07
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 752392-0
    ISSN 1096-9071 ; 0146-6615
    ISSN (online) 1096-9071
    ISSN 0146-6615
    DOI 10.1002/jmv.28388
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