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  1. Article ; Online: Novel use of abatacept and ruxolitinib as salvage therapy in steroid-refractory immune checkpoint blockade-induced myocarditis with myasthenia and myositis overlap syndrome.

    Byer, Stefano H / Stewart, Colten / Mansour, Shareef / Grewal, Udhayvir S

    European journal of cancer (Oxford, England : 1990)

    2024  Volume 202, Page(s) 114027

    MeSH term(s) Humans ; Abatacept/adverse effects ; Immune Checkpoint Inhibitors/adverse effects ; Myocarditis/chemically induced ; Myocarditis/drug therapy ; Salvage Therapy ; Myositis/chemically induced ; Myositis/drug therapy ; Muscle Weakness ; Steroids/therapeutic use ; Nitriles ; Pyrazoles ; Pyrimidines
    Chemical Substances Abatacept (7D0YB67S97) ; Immune Checkpoint Inhibitors ; ruxolitinib (82S8X8XX8H) ; Steroids ; Nitriles ; Pyrazoles ; Pyrimidines
    Language English
    Publishing date 2024-03-16
    Publishing country England
    Document type Letter
    ZDB-ID 82061-1
    ISSN 1879-0852 ; 0277-5379 ; 0959-8049 ; 0964-1947
    ISSN (online) 1879-0852
    ISSN 0277-5379 ; 0959-8049 ; 0964-1947
    DOI 10.1016/j.ejca.2024.114027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Dual-Stent retriever thrombectomy for extensive dural sinus thrombosis.

    Byer, Stefano H / Madarang, E John / Abraham, Michael G

    The International journal of neuroscience

    2022  Volume 133, Issue 12, Page(s) 1374–1379

    Abstract: Introduction: First line treatment for cerebral venous thrombosis (CVT) is systemic anticoagulation. In cases with symptoms of elevated ICP, endovascular thrombectomy (EVT) is pursued. We describe two cases in which dual stent-retrievers were used for ... ...

    Abstract Introduction: First line treatment for cerebral venous thrombosis (CVT) is systemic anticoagulation. In cases with symptoms of elevated ICP, endovascular thrombectomy (EVT) is pursued. We describe two cases in which dual stent-retrievers were used for EVT.
    Objectives: The use of dual stent-retrievers has been described in arterial stroke when clot is present in the M1 artery and both M2 branches as a rescue therapy after 1 stent-retriever failed to remove the clot. We applied this same thinking to our EVT patients.
    Methods: A 17-year-old female with imaging demonstrating occlusion of the superior sagittal sinus (SSS), dominant right transverse sinus (TS), right sigmoid sinus (SS), and upper right internal jugular vein (IJV). A 20-year-old female with a magnetic resonance venography (MRV) noting CVT in the dominant lateral left TS, SS, and upper left IJV.
    Results: Both were taken for EVT due to severity of symptoms. Two 6 × 40 mm stent-retrievers were deployed into the CVT and then remove with continuous aspiration with significant recanalization.
    Conclusions: The average diameter of the dural sinuses is 8 mm compared to the average size of the middle cerebral artery 3-4 mm. The largest available SR in the United States is 6 mm, and the largest outer diameter of available aspiration catheters is 2-3 mm. Due to the larger size of the dural sinuses, using two SRs can result in more efficient recanalization and less radiation.
    MeSH term(s) Female ; Humans ; Adolescent ; Young Adult ; Adult ; Thrombectomy/methods ; Sinus Thrombosis, Intracranial/diagnostic imaging ; Sinus Thrombosis, Intracranial/surgery ; Cranial Sinuses/diagnostic imaging ; Cranial Sinuses/surgery ; Thrombosis ; Stents ; Treatment Outcome
    Language English
    Publishing date 2022-06-13
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 3061-2
    ISSN 1563-5279 ; 1543-5245 ; 0020-7454
    ISSN (online) 1563-5279 ; 1543-5245
    ISSN 0020-7454
    DOI 10.1080/00207454.2022.2080675
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A Systematic Review and Meta-Analysis of Drug Eluting Stents for Safety and Efficacy in Intracranial Atherosclerotic Disease.

    Dharia, Anand A / Byer, Stefano H / Le, Kevin / Chen, Xi / Abraham, Nihil / Hunt, Suzanne / Abraham, Michael G

    The International journal of neuroscience

    2024  , Page(s) 1–11

    Abstract: Background: Advancements in arterial stenting technology have challenged prior notions favoring medical management for intracranial atherosclerotic disease (ICAD). Where previous conclusions were drawn from bare metal stent (BMS) technology, recent ... ...

    Abstract Background: Advancements in arterial stenting technology have challenged prior notions favoring medical management for intracranial atherosclerotic disease (ICAD). Where previous conclusions were drawn from bare metal stent (BMS) technology, recent studies suggest drug-eluting stents (DES) are favorable due to their anti-proliferative effect, which reduces vascular remodeling.
    Methods: We conducted a systematic review and meta-analysis of the literature prior to August 2023 reviewing all reports of ICAD treated with DES. Our target outcomes were incidence of any stroke, transient ischemic attack (TIA), or death within 30 days (postprocedural complications), ischemic stroke in the territory of the qualifying artery beyond 30 days (long-term complications), radiographically detected in-stent restenosis rate (ISR), and symptomatic ISR during follow-up. A subgroup analysis further stratified preprocedural mean stenosis above and below 70% into severe and moderate cohorts, respectively.
    Results: PubMed, Web of Science, Cochrane and EMBASE query identified 527 candidate articles, from which 14 studies met inclusion criteria for a total of 607 patients and 640 ICAD lesions. Incidence of postprocedural complications was 7.3% (95% CI 3.9-11.7%) with subgroup analysis demonstrating significantly higher incidence in the severely stenotic group [9.0% (95% CI 4.7-14.5%)] than the moderately stenotic group [3.0% (95% CI 0.7-6.8%)]. Long-term complications were 1.2% (95% CI 0.4-2.3%). Radiographic ISR was 3.5% (95% CI 1.4-6.3%) and symptomatic ISR was 0.3% (95% CI 0.0-1.5%).
    Conclusions: Our systematic review and meta-analysis suggest that DES can effectively reduce the risk of ISR and may be a viable treatment modality to reduce long-term complications in refractory ICAD patients.
    Language English
    Publishing date 2024-02-19
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 3061-2
    ISSN 1563-5279 ; 1543-5245 ; 0020-7454
    ISSN (online) 1563-5279 ; 1543-5245
    ISSN 0020-7454
    DOI 10.1080/00207454.2024.2313013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Wnt10b protects cardiomyocytes against doxorubicin-induced cell death via MAPK modulation.

    Chen, Lei / Byer, Stefano H / Holder, Rachel / Wu, Lingyuan / Burkey, Kyley / Shah, Zubair

    PloS one

    2023  Volume 18, Issue 10, Page(s) e0277747

    Abstract: Background: Doxorubicin, an anthracycline chemotherapeutic known to incur heart damage, decreases heart function in up to 11% of patients. Recent investigations have implicated the Wnt signaling cascade as a key modulator of cardiac tissue repair after ... ...

    Abstract Background: Doxorubicin, an anthracycline chemotherapeutic known to incur heart damage, decreases heart function in up to 11% of patients. Recent investigations have implicated the Wnt signaling cascade as a key modulator of cardiac tissue repair after myocardial infarction. Wnt upregulation in murine models resulted in stimulation of angiogenesis and suppression of fibrosis after ischemic insult. However, the molecular mechanisms of Wnt in mitigating doxorubicin-induced cardiac insult require further investigation. Identifying cardioprotective mechanisms of Wnt is imperative to reducing debilitating cardiovascular adverse events in oncologic patients undergoing treatment.
    Methods: Exposing human cardiomyocyte AC16 cells to varying concentrations of Wnt10b and DOX, we observed key metrics of cell viability. To assess the viability and apoptotic rates, we utilized MTT and TUNEL assays. We quantified cell and mitochondrial membrane stability via LDH release and JC-1 staining. To investigate how Wnt10b mitigates doxorubicin-induced apoptosis, we introduced pharmacologic inhibitors of key enzymes involved in apoptosis: FR180204 and SB203580, ERK1/2 and p38 inhibitors. Further, we quantified apoptotic executor enzymes, caspase 3/7, via immunofluorescence.
    Results: AC16 cells exposed solely to doxorubicin were shrunken with distorted morphology. Cardioprotective effects of Wnt10b were demonstrated via a reduction in apoptosis, from 70.1% to 50.1%. LDH release was also reduced between doxorubicin and combination groups from 2.27-fold to 1.56-fold relative to the healthy AC16 control group. Mitochondrial membrane stability was increased from 0.67-fold in the doxorubicin group to 5.73 in co-treated groups relative to control. Apoptotic protein expression was stifled by Wnt10b, with caspase3/7 expression reduced from 2.4- to 1.3-fold, and both a 20% decrease in p38 and 40% increase in ERK1/2 activity.
    Conclusion: Our data with the AC16 cell model demonstrates that Wnt10b provides defense mechanisms against doxorubicin-induced cardiotoxicity and apoptosis. Further, we explain a mechanism of this beneficial effect involving the mitochondria through simultaneous suppression of pro-apoptotic p38 and anti-apoptotic ERK1/2 activities.
    MeSH term(s) Animals ; Humans ; Mice ; Antibiotics, Antineoplastic/toxicity ; Apoptosis ; Cardiotoxicity/metabolism ; Doxorubicin/toxicity ; Myocytes, Cardiac/metabolism ; Oxidative Stress ; Wnt Proteins/metabolism
    Chemical Substances Antibiotics, Antineoplastic ; Doxorubicin (80168379AG) ; Wnt Proteins ; Wnt10b protein, mouse
    Language English
    Publishing date 2023-10-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0277747
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Synthesis and crystal structure of cerium(IV) bis-(phosphite).

    Byer, Stefano H / Villa, Eric M

    Acta crystallographica. Section E, Crystallographic communications

    2017  Volume 73, Issue Pt 9, Page(s) 1290–1293

    Abstract: The structure of cerium(IV) bis-(phosphite), Ce( ... ...

    Abstract The structure of cerium(IV) bis-(phosphite), Ce(HPO
    Language English
    Publishing date 2017-08-04
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041947-8
    ISSN 2056-9890 ; 1600-5368
    ISSN 2056-9890 ; 1600-5368
    DOI 10.1107/S205698901701115X
    Database MEDical Literature Analysis and Retrieval System OnLINE

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