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  1. Article: Signing of absentee medical certificates by physicians.

    Dardick, I

    Canadian Medical Association journal

    2010  Volume 119, Issue 3, Page(s) 216–217

    Language English
    Publishing date 2010-03-22
    Publishing country Canada
    Document type Journal Article
    ZDB-ID 215506-0
    ISSN 1488-2329 ; 0008-4409 ; 0820-3946
    ISSN (online) 1488-2329
    ISSN 0008-4409 ; 0820-3946
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Robust Response to

    Ravelonandro, Michel / Briard, Pascal / Scorza, Ralph / Callahan, Ann / Zagrai, Ioan / Kundu, Jiban K / Dardick, Chris

    Genes

    2021  Volume 12, Issue 6

    Abstract: Our goal was to target silencing of ... ...

    Abstract Our goal was to target silencing of the
    MeSH term(s) Biotechnology/methods ; Capsid Proteins/genetics ; Capsid Proteins/metabolism ; Disease Resistance ; Gene Silencing ; Genetic Engineering/methods ; Plum Pox Virus/genetics ; Plum Pox Virus/pathogenicity ; Prunus/genetics ; Prunus/virology ; Transgenes
    Chemical Substances Capsid Proteins
    Language English
    Publishing date 2021-05-27
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes12060816
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Re-Evaluating Stroke Systems of Care: Association of Transfer Status With Thrombectomy Outcomes at an Urban Comprehensive Stroke Center.

    Javed, Kainaat / Boyke, Andre / Naidu, Ishan / Ryvlin, Jessica / Dardick, Joseph / Kadaba, Devikarani / Altschul, David J / Haranhalli, Neil

    Cureus

    2021  Volume 13, Issue 7, Page(s) e16732

    Abstract: Introduction Given the efficacy of mechanical thrombectomies (MT) for large vessel occlusions (LVO), there is concern that the Hub and Spoke model of stroke care, which prioritizes initial assessment of the acute ischemic stroke (AIS) patient at a ... ...

    Abstract Introduction Given the efficacy of mechanical thrombectomies (MT) for large vessel occlusions (LVO), there is concern that the Hub and Spoke model of stroke care, which prioritizes initial assessment of the acute ischemic stroke (AIS) patient at a primary stroke center, would cause a delay in arterial reperfusion, thus leading to worse outcomes. In this study that occurred at our comprehensive stroke center in New York, we compared the clinical outcomes of patients that were either directly admitted for thrombectomy versus those who were transferred from another institution. Methods Retrospective review of the electronic medical record (EMR) was performed on all adult patients treated with endovascular therapy for ischemic stroke between January 2016 and February 2020. A bivariate analysis was performed to compare patients in the direct admit versus transfer group. A multivariable logistic regression model was developed to determine which factors affect 90-day modified Rankin score (mRS) and to evaluate if transfer status was an independent predictor in this model. Results Three hundred and twenty-five patients were included in this study; 127 patients belonged to the direct admit group while 198 were in the transfer group. Thirteen patients (20%) in the direct admit group had a 90-day mRS score of 0-2 and so did 29 patients (25.2%) in the transfer group; thus, no statistically significant difference found in clinical outcomes between both groups (p-value = 0.427). In a multivariable logistic regression model that accounts for age, gender, smoking status, baseline mRS, presenting National Institute of Health Stroke Scale (NIHSS), procedure duration, thrombolysis in cerebral infarction (TICI) score, post-NIHSS and decompressive hemicraniectomy, transfer status was not found to be predictive of clinical outcomes (OR 0.727 95% CI 0.349-1.516; p-value = 0.396).  Conclusion Transfer status is not significantly associated with 90-day outcome. Since Hub and Spoke is not associated with worse outcomes compared to direct admit, it remains a viable model for providing effective care to stroke patients in an urban setting.
    Language English
    Publishing date 2021-07-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.16732
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  4. Article ; Online: A Predictive Model for Functional Outcome in Patients with Acute Ischemic Stroke Undergoing Endovascular Thrombectomy.

    Haranhalli, Neil / Javed, Kainaat / Boyke, Andre / Dardick, Joseph / Naidu, Ishan / Ryvlin, Jessica / Kadaba, Devikarani / Fluss, Rose / Derby, Carol / Altschul, David

    Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association

    2021  Volume 30, Issue 11, Page(s) 106054

    Abstract: Introduction: Endovascular thrombectomy (EVT) is a well-established treatment of acute ischemic stroke. Variability in outcomes among thrombectomy patients results in a need for patient centered approaches to recovery. Identifying key factors that are ... ...

    Abstract Introduction: Endovascular thrombectomy (EVT) is a well-established treatment of acute ischemic stroke. Variability in outcomes among thrombectomy patients results in a need for patient centered approaches to recovery. Identifying key factors that are associated with outcomes can help prognosticate and direct resources for continued improvement post-treatment. Thus, we developed a comprehensive predictive model of short-term outcomes post-thrombectomy.
    Methods: This is a retrospective chart review of adult patients who underwent EVT at our institution over the last four years. Primary outcome was dichotomized 90-day mRS (mRS 0-2 v mRS 3-6). Bivariate analyses were conducted, followed by logistic regression modelling via a backward-elimination approach to identify the best fit predictive model.
    Results: 326 thrombectomies were performed; 230 cases were included in the model. In the final predictive model, adjusting for age, gender, race, diabetes, and presenting NIHSS, pre-admission mRS = 0-2 (OR 18.1; 95% 3.44-95.48; p < 0.001) was the strongest predictor of a good outcome at 90-days. Other independent predictors of good outcomes included being a non-smoker (OR 5.4; 95% CI 1.53-19.00; p = 0.01) and having a post-thrombectomy NIHSS<10 (OR 9.7; 95% CI 3.90-24.27; p < 0.001). A decompressive hemicraniectomy (DHC) was predictive of a poor outcome at 90-days (OR 0.07; 95% CI 0.01-0.72; p = 0.03). This model had a Sensitivity of 79%, a Specificity of 89% and an AUC=0.89.
    Conclusion: Our model identified low pre-admission mRS score, low post-thrombectomy NIHSS, non-smoker status and not requiring a DHC as predictors of good functional outcomes at 90-days. Future works include developing a prognostic scoring system.
    MeSH term(s) Adult ; Humans ; Ischemic Stroke/physiopathology ; Ischemic Stroke/surgery ; Models, Statistical ; Retrospective Studies ; Thrombectomy ; Treatment Outcome
    Language English
    Publishing date 2021-09-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1131675-5
    ISSN 1532-8511 ; 1052-3057
    ISSN (online) 1532-8511
    ISSN 1052-3057
    DOI 10.1016/j.jstrokecerebrovasdis.2021.106054
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  5. Article ; Online: Impact of Antithrombotic Medications and Reversal Strategies on the Surgical Management and Outcomes of Traumatic Acute Subdural Hematoma.

    Vattipally, Vikas N / Ran, Kathleen R / Giwa, Ganiat A / Myneni, Saket / Dardick, Joseph M / Rincon-Torroella, Jordina / Ye, Xiaobu / Byrne, James P / Suarez, Jose I / Lin, Shih-Chun / Jackson, Christopher M / Mukherjee, Debraj / Gallia, Gary L / Huang, Judy / Weingart, Jon D / Azad, Tej D / Bettegowda, Chetan

    World neurosurgery

    2023  Volume 182, Page(s) e431–e441

    Abstract: Objective: Careful hematologic management is required in surgical patients with traumatic acute subdural hematoma (aSDH) taking antithrombotic medications. We sought to compare outcomes between patients with aSDH taking antithrombotic medications at ... ...

    Abstract Objective: Careful hematologic management is required in surgical patients with traumatic acute subdural hematoma (aSDH) taking antithrombotic medications. We sought to compare outcomes between patients with aSDH taking antithrombotic medications at admission who received antithrombotic reversal with patients with aSDH not taking antithrombotics.
    Methods: Retrospective review identified patients with traumatic aSDH requiring surgical evacuation. The cohort was divided based on antithrombotic use and whether pharmacologic reversal agents or platelet transfusions were administered. A 3-way comparison of outcomes was performed between patients taking anticoagulants who received pharmacologic reversal, patients taking antiplatelets who received platelet transfusion, and patients not taking antithrombotics. Multivariable regressions, adjusted for injury severity, further investigated associations with outcomes.
    Results: Of 138 patients who met inclusion criteria, 13.0% (n = 18) reported taking anticoagulants, 16.7% (n = 23) reported taking antiplatelets, and 3.6% (n = 5) reported taking both. Patients taking antiplatelets who received platelet transfusion had longer intraoperative times (P = 0.040) and higher rates of palliative care consultations (P = 0.046) compared with patients taking anticoagulants who received pharmacologic reversal and patients not taking antithrombotics. Across groups, no significant differences were found in frequency of in-hospital intracranial hemorrhage and venous thromboembolism, length of hospital stay, rate of inpatient mortality, or follow-up health status. In multivariable analysis, intraoperative time remained longest for the antiplatelets with platelet transfusion group. Other outcomes were not associated with patient group.
    Conclusions: Among surgical patients with traumatic aSDH, those taking antiplatelet medications who receive platelet transfusions experience longer intraoperative procedure times and higher rates of palliative care consultation. Comparable outcomes were observed between patients receiving antithrombotic reversal and patients not taking antithrombotics.
    MeSH term(s) Humans ; Fibrinolytic Agents/therapeutic use ; Hematoma, Subdural, Acute/surgery ; Hematoma, Subdural, Acute/drug therapy ; Hematoma, Subdural/surgery ; Hematoma, Subdural/drug therapy ; Anticoagulants/therapeutic use ; Retrospective Studies ; Hematoma, Subdural, Intracranial/drug therapy
    Chemical Substances Fibrinolytic Agents ; Anticoagulants
    Language English
    Publishing date 2023-11-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2023.11.117
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  6. Article: Predictors of Radiographic and Symptomatic Hemorrhagic Conversion Following Endovascular Thrombectomy for Acute Ischemic Stroke Due to Large Vessel Occlusion.

    Javed, Kainaat / Boyke, Andre / Naidu, Ishan / Ryvlin, Jessica / Fluss, Rose / Fortunel, Adisson N / Dardick, Joseph / Kadaba, Devikarani / Altschul, David J / Haranhalli, Neil

    Cureus

    2022  Volume 14, Issue 4, Page(s) e24449

    Abstract: Background Endovascular therapy is known to achieve a high rate of recanalization in patients with acute ischemic stroke (AIS) due to large vessel occlusion (LVO) and is currently the standard of care. Hemorrhagic conversion is a severe complication that ...

    Abstract Background Endovascular therapy is known to achieve a high rate of recanalization in patients with acute ischemic stroke (AIS) due to large vessel occlusion (LVO) and is currently the standard of care. Hemorrhagic conversion is a severe complication that may occur following AIS in patients undergoing endovascular thrombectomy (EVT). There is a scarcity of data on the risk factors related to HV in post-EVT patients, especially those who develop symptomatic hemorrhagic conversion. The main objective of our study is to identify independent predictors of radiographic and symptomatic hemorrhagic conversion in our diverse patient population with multiple baseline comorbidities that presented with AIS and were treated with EVT as per the most updated guidelines and practices. Methodology This is a retrospective chart review in which we enrolled adult patients treated with EVT for AIS at a comprehensive stroke center in the Bronx, NY, over a four-year period. Bivariate analyses followed by multiple logistic regression modeling were performed to determine the independent predictors of all and symptomatic hemorrhagic conversion. Results A total of 326 patients who underwent EVT for AIS were enrolled. Of these, 74 (22.7%) had an HC, while 252 (77.3%) did not. In total, 25 out of the 74 (33.7%) patients were symptomatic. In the logistic regression model, a history of prior ischemic stroke (odds ratio (OR) = 2.197; 95% confidence interval (CI) = 1.062-4.545; p-value = 0.034), Alberta Stroke Program Early CT Score (ASPECTS) of <6 (OR = 2.207; 95% CI = 1.477-7.194; p-value = 0.019), and Thrombolysis in Cerebral Infarction (TICI) 2B-3 recanalization (OR = 2.551; 95% CI = 1.998-6.520; p-value=0.045) were found to be independent predictors of all types of hemorrhagic conversion. The only independent predictor of symptomatic hemorrhagic conversion on multiple logistic regression modeling was an elevated international normalized ratio (INR) (OR = 11.051; 95% CI = 1.866-65.440; p-value = 0.008). Conclusions History of prior ischemic stroke, low ASPECTS score, and TICI 2B-3 recanalization are independent predictors of hemorrhagic conversion while an elevated INR is the only independent predictor of symptomatic hemorrhagic conversion in post-thrombectomy patients.
    Language English
    Publishing date 2022-04-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2747273-5
    ISSN 2168-8184
    ISSN 2168-8184
    DOI 10.7759/cureus.24449
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  7. Article: Mounting evidence against current histogenetic concepts for salivary gland tumorigenesis.

    Dardick, I

    European journal of morphology

    1998  Volume 36 Suppl, Page(s) 257–261

    Abstract: Various morphological observations of salivary gland tumors are frequently used to support histogenetic concepts, such as the semipluripotential bicellular reserve cell hypothesis, for these tumors. Singularly, evidence in support of this hypothesis ... ...

    Abstract Various morphological observations of salivary gland tumors are frequently used to support histogenetic concepts, such as the semipluripotential bicellular reserve cell hypothesis, for these tumors. Singularly, evidence in support of this hypothesis remains unavailable. Indeed, physiological evidence from studies of salivary glands have long existed proving the semipluripotential bicellular reserve cell hypothesis was incorrect. More recent studies reconfirm this and show that all cell types in these complex glands are quite capable of replication and, therefore, of being involved in tumorigenic processes. The demise of the bicellular reserve cell hypothesis is long overdue.
    MeSH term(s) Animals ; Cell Division/physiology ; Humans ; Parotid Gland/chemistry ; Parotid Gland/pathology ; Proliferating Cell Nuclear Antigen/analysis ; Salivary Ducts/chemistry ; Salivary Ducts/pathology ; Salivary Gland Neoplasms/pathology
    Chemical Substances Proliferating Cell Nuclear Antigen
    Language English
    Publishing date 1998-08
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1054139-1
    ISSN 0924-3860
    ISSN 0924-3860
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  8. Article ; Online: Clear cell carcinoma: review of its histomorphogenesis and classification as a squamous cell lesion.

    Dardick, Irving / Leong, Iona

    Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics

    2009  Volume 108, Issue 3, Page(s) 399–405

    Abstract: In current classification schemes, clear cell carcinoma-including both the hyalinized and nonhyalinized variety--is now an accepted subtype of malignant salivary gland tumors. Despite this, the underlying cellular differentiation process leading to the ... ...

    Abstract In current classification schemes, clear cell carcinoma-including both the hyalinized and nonhyalinized variety--is now an accepted subtype of malignant salivary gland tumors. Despite this, the underlying cellular differentiation process leading to the typical histomorphology of this neoplasm remains unclear. This review summarizes and illustrates the histologic, ultrastructural, and immunohistochemical evidence for the underlying squamous cell nature of clear cell carcinoma. Squamous cell differentiation is not an uncommon feature of nonneoplastic and neoplastic lesions of the salivary glands. Clear cell carcinoma needs to be added to this list as a unique but specific variety of clear cell squamous carcinoma.
    MeSH term(s) Adenocarcinoma, Clear Cell/classification ; Adenocarcinoma, Clear Cell/pathology ; Adenocarcinoma, Clear Cell/ultrastructure ; Carcinoma, Squamous Cell/classification ; Carcinoma, Squamous Cell/pathology ; Cell Differentiation ; Epithelial Cells/pathology ; Epithelial Cells/ultrastructure ; Humans ; Immunohistochemistry ; Salivary Gland Neoplasms/classification ; Salivary Gland Neoplasms/pathology ; Salivary Gland Neoplasms/ultrastructure
    Language English
    Publishing date 2009-09
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 202468-8
    ISSN 1528-395X ; 0030-4220 ; 1079-2104
    ISSN (online) 1528-395X
    ISSN 0030-4220 ; 1079-2104
    DOI 10.1016/j.tripleo.2009.03.033
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  9. Article ; Online: Craniotomy versus craniectomy for traumatic acute subdural hematoma-coarsened exact matched analysis of outcomes.

    Ran, Kathleen R / Vattipally, Vikas N / Giwa, Ganiat A / Myneni, Saket / Raj, Divyaansh / Dardick, Joseph M / Rincon-Torroella, Jordina / Ye, Xiaobu / Byrne, James P / Suarez, Jose I / Lin, Shih-Chun / Jackson, Christopher M / Mukherjee, Debraj / Gallia, Gary L / Huang, Judy / Weingart, Jon D / Azad, Tej D / Bettegowda, Chetan

    Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia

    2023  Volume 119, Page(s) 52–58

    Abstract: Background and objectives: Acute subdural hematoma (aSDH) after traumatic brain injury frequently requires emergent craniotomy (CO) or decompressive craniectomy (DC). We sought to determine the variables associated with either surgical approach and to ... ...

    Abstract Background and objectives: Acute subdural hematoma (aSDH) after traumatic brain injury frequently requires emergent craniotomy (CO) or decompressive craniectomy (DC). We sought to determine the variables associated with either surgical approach and to compare outcomes between matched patients.
    Methods: A multi-center retrospective review was used to identify traumatic aSDH patients who underwent CO or DC. Patient variables independently associated with surgical approach were used for coarsened exact matching.Multivariate logistic regression and multivariate Cox proportional-hazards regression wereconducted on matched patients to determine independent predictors of mortality.
    Results: Seventy-six patients underwent CO and sixty-two underwent DC for aSDH evacuation. DC patients were21.4 years younger (P < 0.001), more likely to be male (80.6 % vs 60.5 %,P = 0.011), and present with GCS ≤ 8 (64.5 % vs 36.8 %,P = 0.001). Age (P < 0.001), epidural hematoma (P = 0.01), skull fracture (P = 0.001), and cisternal effacement (P = 0.02) were independently associated with surgical approach. After coarsened exact matching, DC (P = 0.008), older age (P = 0.007), male sex (P = 0.04), and intraventricular hemorrhage (P = 0.02), were independently associated with inpatient mortality. Multivariate Cox proportional-hazards regression demonstrated that DC was independently associated with mortality at 90-days (P = 0.001) and 1-year post-operation (P = 0.003).
    Conclusion: aSDH patients who receive surgical evacuation via DC as opposed to CO are younger, more likely to be male, and have worse clinical exam. After controlling for patient differences via coarsened exact matching, DC is independently associated with mortality.
    MeSH term(s) Humans ; Male ; Female ; Hematoma, Subdural, Acute/surgery ; Decompressive Craniectomy ; Craniotomy/adverse effects ; Hematoma, Subdural/etiology ; Brain Injuries, Traumatic/complications ; Brain Injuries, Traumatic/surgery ; Brain Injuries/complications ; Retrospective Studies ; Hematoma, Subdural, Intracranial/surgery ; Treatment Outcome
    Language English
    Publishing date 2023-11-18
    Publishing country Scotland
    Document type Journal Article
    ZDB-ID 1193674-5
    ISSN 1532-2653 ; 0967-5868
    ISSN (online) 1532-2653
    ISSN 0967-5868
    DOI 10.1016/j.jocn.2023.11.021
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  10. Article ; Online: Single-cell immunophenotyping of the skin lesion erythema migrans identifies IgM memory B cells.

    Jiang, Ruoyi / Meng, Hailong / Raddassi, Khadir / Fleming, Ira / Hoehn, Kenneth B / Dardick, Kenneth R / Belperron, Alexia A / Montgomery, Ruth R / Shalek, Alex K / Hafler, David A / Kleinstein, Steven H / Bockenstedt, Linda K

    JCI insight

    2021  Volume 6, Issue 12

    Abstract: The skin lesion erythema migrans (EM) is an initial sign of the Ixodes tick-transmitted Borreliella spirochetal infection known as Lyme disease. T cells and innate immune cells have previously been shown to predominate the EM lesion and promote the ... ...

    Abstract The skin lesion erythema migrans (EM) is an initial sign of the Ixodes tick-transmitted Borreliella spirochetal infection known as Lyme disease. T cells and innate immune cells have previously been shown to predominate the EM lesion and promote the reaction. Despite the established importance of B cells and antibodies in preventing infection, the role of B cells in the skin immune response to Borreliella is unknown. Here, we used single-cell RNA-Seq in conjunction with B cell receptor (BCR) sequencing to immunophenotype EM lesions and their associated B cells and BCR repertoires. We found that B cells were more abundant in EM in comparison with autologous uninvolved skin; many were clonally expanded and had circulating relatives. EM-associated B cells upregulated the expression of MHC class II genes and exhibited preferential IgM isotype usage. A subset also exhibited low levels of somatic hypermutation despite a gene expression profile consistent with memory B cells. Our study demonstrates that single-cell gene expression with paired BCR sequencing can be used to interrogate the sparse B cell populations in human skin and reveals that B cells in the skin infection site in early Lyme disease expressed a phenotype consistent with local antigen presentation and antibody production.
    MeSH term(s) Adult ; Aged ; B-Lymphocytes/cytology ; B-Lymphocytes/immunology ; B-Lymphocytes/metabolism ; Erythema Chronicum Migrans/immunology ; Erythema Chronicum Migrans/pathology ; Female ; Histocompatibility Antigens Class II/genetics ; Histocompatibility Antigens Class II/immunology ; Histocompatibility Antigens Class II/metabolism ; Humans ; Immunoglobulin M/genetics ; Immunoglobulin M/metabolism ; Immunophenotyping/methods ; Lyme Disease ; Male ; Middle Aged ; RNA-Seq ; Single-Cell Analysis/methods ; Skin/cytology ; Transcriptome/genetics ; Transcriptome/immunology
    Chemical Substances Histocompatibility Antigens Class II ; Immunoglobulin M
    Language English
    Publishing date 2021-06-22
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2379-3708
    ISSN (online) 2379-3708
    DOI 10.1172/jci.insight.148035
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