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  1. Article ; Online: Differential Role of the RAC1-Binding Proteins FAM49b (CYRI-B) and CYFIP1 in Platelets.

    Sisario, Dmitri / Spindler, Markus / Ermer, Katharina J / Grütz, Noah / Nicolai, Leo / Gaertner, Florian / Machesky, Laura M / Bender, Markus

    Cells

    2024  Volume 13, Issue 4

    Abstract: Platelet function at vascular injury sites is tightly regulated through the actin cytoskeleton. The Wiskott-Aldrich syndrome protein-family verprolin-homologous protein (WAVE)-regulatory complex (WRC) activates lamellipodia formation via ARP2/3, ... ...

    Abstract Platelet function at vascular injury sites is tightly regulated through the actin cytoskeleton. The Wiskott-Aldrich syndrome protein-family verprolin-homologous protein (WAVE)-regulatory complex (WRC) activates lamellipodia formation via ARP2/3, initiated by GTP-bound RAC1 interacting with the WRC subunit CYFIP1. The protein FAM49b (Family of Unknown Function 49b), also known as CYRI-B (CYFIP-Related RAC Interactor B), has been found to interact with activated RAC1, leading to the negative regulation of the WRC in mammalian cells. To investigate the role of FAM49b in platelet function, we studied platelet-specific
    MeSH term(s) Animals ; Mice ; Actin Cytoskeleton/metabolism ; Adaptor Proteins, Signal Transducing/metabolism ; Blood Platelets/metabolism ; Carrier Proteins/metabolism ; Fibrinogen/metabolism ; Mammals/metabolism ; rac1 GTP-Binding Protein/metabolism
    Chemical Substances Adaptor Proteins, Signal Transducing ; Carrier Proteins ; Cyfip1 protein, mouse ; Fibrinogen (9001-32-5) ; rac1 GTP-Binding Protein (EC 3.6.5.2) ; CYRIB protein, mouse ; Rac1 protein, mouse
    Language English
    Publishing date 2024-02-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells13040299
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The WASH-complex subunit Strumpellin regulates integrin αIIbβ3 trafficking in murine platelets.

    Schurr, Yvonne / Reil, Lucy / Spindler, Markus / Nieswandt, Bernhard / Machesky, Laura M / Bender, Markus

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 9526

    Abstract: The platelet specific integrin αIIbβ3 mediates platelet adhesion, aggregation and plays a central role in thrombosis and hemostasis. In resting platelets, αIIbβ3 is expressed on the membrane surface and in intracellular compartments. Upon activation, the ...

    Abstract The platelet specific integrin αIIbβ3 mediates platelet adhesion, aggregation and plays a central role in thrombosis and hemostasis. In resting platelets, αIIbβ3 is expressed on the membrane surface and in intracellular compartments. Upon activation, the number of surface-expressed αIIbβ3 is increased by the translocation of internal granule pools to the plasma membrane. The WASH complex is the major endosomal actin polymerization-promoting complex and has been implicated in the generation of actin networks involved in endocytic trafficking of integrins in other cell types. The role of the WASH complex and its subunit Strumpellin in platelet function is still unknown. Here, we report that Strumpellin-deficient murine platelets display an approximately 20% reduction in integrin αIIbβ3 surface expression. While exposure of the internal αIIbβ3 pool after platelet activation was unaffected, the uptake of the αIIbβ3 ligand fibrinogen was delayed. The number of platelet α-granules was slightly but significantly increased in Strumpellin-deficient platelets. Quantitative proteome analysis of isolated αIIbβ3-positive vesicular structures revealed an enrichment of protein markers, which are associated with the endoplasmic reticulum, Golgi complex and early endosomes in Strumpellin-deficient platelets. These results point to a so far unidentified role of the WASH complex subunit Strumpellin in integrin αIIbβ3 trafficking in murine platelets.
    MeSH term(s) Animals ; Mice ; Blood Platelets/metabolism ; Integrin alpha2/metabolism ; Integrin beta3/metabolism ; Intracellular Signaling Peptides and Proteins/metabolism ; Megakaryocytes/metabolism ; Mice, Knockout
    Chemical Substances Integrin alpha2 ; Integrin beta3 ; Washc5 protein, mouse ; Intracellular Signaling Peptides and Proteins
    Language English
    Publishing date 2023-06-12
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-36387-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A Scoping Review on Work Experiences of Nurses After Being Diagnosed With Cancer.

    You, Kai-Lin / Cummings, Meredith H / Bender, Catherine M / Fennimore, Laura A / Rosenzweig, Margaret Q / Dierkes, Andrew M / Raina, Ketki D / Hagan Thomas, Teresa

    Oncology nursing forum

    2023  Volume 50, Issue 6, Page(s) 714–724

    Abstract: Problem identification: To map key concepts underpinning work-related studies about nurses with cancer and identify knowledge gaps.: Literature review: A search was conducted in the PubMed®, CINAHL®, and PsycINFO® databases for articles about nurses ... ...

    Abstract Problem identification: To map key concepts underpinning work-related studies about nurses with cancer and identify knowledge gaps.
    Literature review: A search was conducted in the PubMed®, CINAHL®, and PsycINFO® databases for articles about nurses with cancer and work-related topics published through March 2023.
    Data evaluation: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews Checklist was used to report results, and the JBI critical appraisal tools were used to assess the quality of studies. Eleven articles were included.
    Synthesis: The following four critical concepts were identified: role adjustments at work, cancer impacts on work, organizational support, and translating insights gained from cancer experience into work. Research gaps identified by the scoping review were a lack of theoretical or conceptual frameworks, lack of syntheses of main ideas, and lack of clear data about participants' socioeconomic status across studies.
    Implications for research: Minimal research exists to map predictors, outcomes, or intervention targets to guide organizational strategies to support nurses' retention in the nursing workforce. A guiding framework, recruitment of diverse nurses, and focus on the four critical concepts identified in this scoping review are suggested for future research.
    MeSH term(s) Humans ; Neoplasms ; Nursing Staff
    Language English
    Publishing date 2023-10-24
    Publishing country United States
    Document type Systematic Review ; Review ; Journal Article
    ZDB-ID 604886-9
    ISSN 1538-0688 ; 0190-535X ; 1538-0688
    ISSN (online) 1538-0688 ; 0190-535X
    ISSN 1538-0688
    DOI 10.1188/23.ONF.714-724
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Patient Care Technician Staffing and Outcomes Among US Patients Receiving In-Center Hemodialysis.

    Plantinga, Laura C / Bender, Alexis A / Urbanski, Megan / Douglas-Ajayi, Clarica / Morgan, Jennifer Craft / Woo, Karen / Jaar, Bernard G

    JAMA network open

    2024  Volume 7, Issue 3, Page(s) e241722

    Abstract: Importance: Dialysis patient care technicians (PCTs) play a critical role in US in-center hemodialysis (HD) care, but little is known about the association of PCT staffing with patient outcomes at US HD facilities.: Objective: To estimate the ... ...

    Abstract Importance: Dialysis patient care technicians (PCTs) play a critical role in US in-center hemodialysis (HD) care, but little is known about the association of PCT staffing with patient outcomes at US HD facilities.
    Objective: To estimate the associations of in-center HD patient outcomes with facility-level PCT staffing.
    Design, setting, and participants: This was a retrospective cohort study, with data analysis performed from March 2023 to January 2024. Data on US patients with end-stage kidney disease and their treatment facilities were obtained from the US Renal Data System. Participants included patients (aged 18-100 years) initiating in-center HD between January 1, 2016, and December 31, 2018, who continued receiving in-center HD for 90 days or more and had data on PCT staffing at their initial treating HD facility.
    Exposure: Facility-level patient-to-PCT ratios (number of HD patients divided by the number of PCTs reported by the treating facility in the prior year), categorized into quartiles (highest quartile denotes the highest PCT burden).
    Main outcomes and measures: Patient-level outcomes included 1-year patient mortality, hospitalization, and transplantation. Associations of outcomes with quartile of patient-to-PCT ratio were estimated using incidence rate ratios (IRRs) from mixed-effects Poisson regression, with adjustment for patient demographics and clinical and facility factors.
    Results: A total of 236 126 patients (mean [SD] age, 63.1 [14.4] years; 135 952 [57.6%] male; 65 945 [27.9%] Black; 37 777 [16.0%] Hispanic; 153 637 [65.1%] White; 16 544 [7.0%] other race; 146 107 [61.9%] with diabetes) were included. After full adjustment, the highest vs lowest quartile of facility-level patient-to-PCT ratio was associated with a 7% higher rate of patient mortality (IRR, 1.07; 95% CI, 1.02-1.12), a 5% higher rate of hospitalization (IRR, 1.05; 95% CI, 1.02-1.08), an 8% lower rate of waitlisting (IRR, 0.92; 95% CI, 0.85-0.98), and a 20% lower rate of transplant (IRR, 0.80; 95% CI, 0.71-0.91). The highest vs lowest quartile of patient-to-PCT ratio was also associated with an 8% higher rate of sepsis-related hospitalization (IRR, 1.08; 95% CI, 1.03-1.14) and a 15% higher rate of vascular access-related hospitalization (IRR, 1.15; 95% CI, 1.03-1.28).
    Conclusions and relevance: These findings suggest that initiation of treatment in facilities with the highest patient-to-PCT ratios may be associated with worse early mortality, hospitalization, and transplantation outcomes. These results support further investigation of the impact of US PCT staffing on patient safety and quality of US in-center HD care.
    MeSH term(s) Humans ; Male ; Middle Aged ; Female ; Retrospective Studies ; Renal Dialysis ; Kidney Failure, Chronic/epidemiology ; Hospitalization ; Workforce
    Language English
    Publishing date 2024-03-04
    Publishing country United States
    Document type Journal Article
    ISSN 2574-3805
    ISSN (online) 2574-3805
    DOI 10.1001/jamanetworkopen.2024.1722
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Radiation Therapy With or Without Cisplatin for Local Recurrences of Endometrial Cancer: Results From an NRG Oncology/GOG Prospective Randomized Multicenter Clinical Trial.

    Klopp, Ann H / Enserro, Danielle / Powell, Matthew / Randall, Marcus / Schink, Julian C / Mannel, Robert S / Holman, Laura / Bender, David / Kushnir, Christina L / Backes, Floor / Zweizig, Susan L / Waggoner, Steven / Bradley, Kristin A / Lawrence, Lana DeSouza / Hanjani, Parviz / Darus, Christopher J / Small, William / Cardenes, Higinia R / Feddock, Jonathan M /
    Miller, David S

    Journal of clinical oncology : official journal of the American Society of Clinical Oncology

    2024  , Page(s) JCO2301279

    Abstract: ... chemotherapy were treated with once weekly cisplatin (40 mg/m: Conclusion: Excellent outcomes can be ...

    Abstract Purpose: Pelvic recurrence is a frequent pattern of relapse for women with endometrial cancer. A randomized trial compared progression-free survival (PFS) after treatment with radiation therapy alone as compared with concurrent chemotherapy.
    Materials and methods: Between February 2008 and August 2020, 165 patients were randomly assigned 1:1 to receive either radiation treatment alone or a combination of chemotherapy and radiation treatment. The primary objective of this study was to determine whether chemoradiation therapy was more effective than radiation therapy alone at improving PFS.
    Results: The majority of patients had low-grade (1 or 2) endometrioid histology (82%) and recurrences confined to the vagina (86%). External beam with either the three-dimensional or intensity modulated radiation treatment technique was followed by a boost delivered with brachytherapy or external beam. Patients randomly assigned to receive chemotherapy were treated with once weekly cisplatin (40 mg/m
    Conclusion: Excellent outcomes can be achieved for women with localized recurrences of endometrial cancer when treated with radiation therapy. The addition of chemotherapy does not improve PFS for patients treated with definitive radiation therapy for recurrent endometrial cancer and increases acute toxicity. Patients with low-grade and vaginal recurrences who constituted the majority of those enrolled are best treated with radiation therapy alone.
    Language English
    Publishing date 2024-04-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604914-x
    ISSN 1527-7755 ; 0732-183X
    ISSN (online) 1527-7755
    ISSN 0732-183X
    DOI 10.1200/JCO.23.01279
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Optimizing Quality of Life With Cognitive Impairment: A Study of End-of-Life Care in Assisted Living.

    Arneson, Laura / Bender, Alexis A / Robert, Maggi N / Perkins, Molly M

    Journal of the American Medical Directors Association

    2019  Volume 21, Issue 5, Page(s) 692–696

    Abstract: Objectives: Assisted living (AL) is an expanding site of end-of-life (EOL) care in the United States. Understanding determinants of quality of life (QoL) for AL residents near EOL is vital to optimize care for this growing population, most of whom have ... ...

    Abstract Objectives: Assisted living (AL) is an expanding site of end-of-life (EOL) care in the United States. Understanding determinants of quality of life (QoL) for AL residents near EOL is vital to optimize care for this growing population, most of whom have some degree of cognitive impairment (CI). This analysis aimed to identify factors associated with QoL in a diverse sample of AL residents with CI approaching EOL.
    Design: Observational cross-section design.
    Setting and participants: Data are from a 5-year study funded by the National Institute on Aging examining EOL care of residents in 7 diverse AL communities in metropolitan Atlanta (n = 67).
    Methods: CI was assessed with the Montreal Cognitive Assessment (scores ≤ 26) and QoL was determined with the self-reported QoL in Alzheimer's disease survey adapted for use in AL. Psychological distress was assessed using the Patient Health Questionnaire-4 and fatigue was assessed using the 13-item Functional Assessment of Chronic Illness Therapy Fatigue Scale. Initial descriptive analyses were followed by backward stepwise regression analyses to select a best-fitting model of QoL.
    Results: The final model predicted 27% of the variance in QoL. CI was not significantly correlated with QoL and was not retained in the final model. Pain and functional limitation also did not meet inclusion criteria (P ≤ .10) and were sequentially removed, producing a final model of QoL in terms of psychological distress (β = -0.28, P = .032), fatigue (β = -0.26, P = .048), and race (β = 0.21, P = .063).
    Conclusions and implications: The lack of a significant correlation between degree of CI and self-reported QoL suggests that AL residents have the potential to experience high QoL, despite CI. Interventions to reduce psychological distress and manage fatigue could be implemented during EOL care to attempt to improve QoL for AL residents with CI. The correlation between race and QoL warrants investigation into possible racial disparities in AL and EOL care.
    MeSH term(s) Cognitive Dysfunction ; Hospice Care ; Humans ; Quality of Life ; Surveys and Questionnaires ; Terminal Care
    Language English
    Publishing date 2019-11-26
    Publishing country United States
    Document type Journal Article ; Observational Study ; Research Support, N.I.H., Extramural
    ZDB-ID 2171030-2
    ISSN 1538-9375 ; 1525-8610
    ISSN (online) 1538-9375
    ISSN 1525-8610
    DOI 10.1016/j.jamda.2019.10.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Exposure considerations in human safety assessment: Report from an EPAA Partners' Forum.

    Cronin, Mark T D / Ball, Nicholas / Beken, Sonja / Bender, Hans / Bercaru, Ofelia / Caneva, Laura / Corvaro, Marco / Currie, Richard A / Dawson, Jeffrey L / Desert, Paul / Escher, Sylvia E / Franco, Antonio / Irizar, Amaia / Mehta, Jyotigna M / Rogiers, Vera / Tremblay, Raphaël T / Westmoreland, Carl / Maxwell, Gavin

    Regulatory toxicology and pharmacology : RTP

    2023  Volume 144, Page(s) 105483

    Abstract: Understanding and estimating the exposure to a substance is one of the fundamental requirements for safe manufacture and use. Many approaches are taken to determine exposure to substances, mainly driven by potential use and regulatory need. There are ... ...

    Abstract Understanding and estimating the exposure to a substance is one of the fundamental requirements for safe manufacture and use. Many approaches are taken to determine exposure to substances, mainly driven by potential use and regulatory need. There are many opportunities to improve and optimise the use of exposure information for chemical safety. The European Partnership for Alternative Approaches to Animal Testing (EPAA) therefore convened a Partners' Forum (PF) to explore exposure considerations in human safety assessment of industrial products to agree key conclusions for the regulatory acceptance of exposure assessment approaches and priority areas for further research investment. The PF recognised the widescale use of exposure information across industrial sectors with the possibilities of creating synergies between different sectors. Further, the PF acknowledged that the EPAA could make a significant contribution to promote the use of exposure data in human safety assessment, with an aim to address specific regulatory needs. To achieve this, research needs, as well as synergies and areas for potential collaboration across sectors, were identified.
    MeSH term(s) Animals ; Humans ; Animal Testing Alternatives ; Industry ; Commerce ; Risk Assessment
    Language English
    Publishing date 2023-08-26
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 604672-1
    ISSN 1096-0295 ; 0273-2300
    ISSN (online) 1096-0295
    ISSN 0273-2300
    DOI 10.1016/j.yrtph.2023.105483
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  8. Article ; Online: Repurposing HDAC inhibitors to enhance ribonuclease 4 and 7 expression and reduce urinary tract infection.

    Schwartz, Laura / Bochter, M Skye / Simoni, Aaron / Bender, Kristin / de Dios Ruiz Rosado, Juan / Cotzomi-Ortega, Israel / Sanchez-Zamora, Yuriko I / Becknell, Brian / Linn, Sarah / Li, Birong / Santoro, Nicholas / Eichler, Tad / Spencer, John David

    Proceedings of the National Academy of Sciences of the United States of America

    2023  Volume 120, Issue 4, Page(s) e2213363120

    Abstract: With the emergence of antibiotic-resistant bacteria, innovative approaches are needed for the treatment of urinary tract infections. Boosting antimicrobial peptide expression may provide an alternative to antibiotics. Here, we developed reporter cell ... ...

    Abstract With the emergence of antibiotic-resistant bacteria, innovative approaches are needed for the treatment of urinary tract infections. Boosting antimicrobial peptide expression may provide an alternative to antibiotics. Here, we developed reporter cell lines and performed a high-throughput screen of clinically used drugs to identify compounds that boost ribonuclease 4 and 7 expression (RNase 4 and 7), peptides that have antimicrobial activity against antibiotic-resistant uropathogens. This screen identified histone deacetylase (HDAC) inhibitors as effective RNase 4 and RNase 7 inducers. Validation studies in primary human kidney and bladder cells confirmed pan-HDAC inhibitors as well as the HDAC class I inhibitor, MS-275, induce RNase 4 and RNase 7 to protect human kidney and bladder cells from uropathogenic
    MeSH term(s) Humans ; Mice ; Animals ; Histone Deacetylase Inhibitors/pharmacology ; Escherichia coli/metabolism ; Drug Repositioning ; Ribonucleases/metabolism ; Urinary Tract Infections/drug therapy ; Urinary Tract Infections/microbiology ; Anti-Bacterial Agents
    Chemical Substances ribonuclease 4 (EC 3.1.-) ; Ribonuclease 7 (EC 3.1.27.-) ; entinostat (1ZNY4FKK9H) ; Histone Deacetylase Inhibitors ; Ribonucleases (EC 3.1.-) ; Anti-Bacterial Agents
    Language English
    Publishing date 2023-01-18
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.2213363120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Ex vivo anticoagulants affect human blood platelet biomechanics with implications for high-throughput functional mechanophenotyping.

    Sachs, Laura / Wesche, Jan / Lenkeit, Lea / Greinacher, Andreas / Bender, Markus / Otto, Oliver / Palankar, Raghavendra

    Communications biology

    2022  Volume 5, Issue 1, Page(s) 86

    Abstract: Inherited platelet disorders affecting the human platelet cytoskeleton result in increased bleeding risk. However, deciphering their impact on cytoskeleton-dependent intrinsic biomechanics of platelets remains challenging and represents an unmet need ... ...

    Abstract Inherited platelet disorders affecting the human platelet cytoskeleton result in increased bleeding risk. However, deciphering their impact on cytoskeleton-dependent intrinsic biomechanics of platelets remains challenging and represents an unmet need from a diagnostic and prognostic perspective. It is currently unclear whether ex vivo anticoagulants used during collection of peripheral blood impact the mechanophenotype of cellular components of blood. Using unbiased, high-throughput functional mechanophenotyping of single human platelets by real-time deformability cytometry, we found that ex vivo anticoagulants are a critical pre-analytical variable that differentially influences platelet deformation, their size, and functional response to agonists by altering the cytoskeleton. We applied our findings to characterize the functional mechanophenotype of platelets from a patient with Myosin Heavy Chain 9 (MYH9) related macrothrombocytopenia. Our data suggest that platelets from MYH9 p.E1841K mutation in humans affecting platelet non-muscle myosin heavy chain IIa (NMMHC-IIA) are biomechanically less deformable in comparison to platelets from healthy individuals.
    MeSH term(s) Adult ; Anticoagulants/pharmacology ; Biomechanical Phenomena ; Blood Platelets/classification ; Blood Platelets/drug effects ; Gene Expression Regulation/drug effects ; High-Throughput Screening Assays ; Humans ; Mutation ; Myosin Heavy Chains/genetics ; Platelet-Rich Plasma ; Specimen Handling
    Chemical Substances Anticoagulants ; MYH9 protein, human ; Myosin Heavy Chains (EC 3.6.4.1)
    Language English
    Publishing date 2022-01-21
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2399-3642
    ISSN (online) 2399-3642
    DOI 10.1038/s42003-021-02982-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Author Correction: Ex vivo anticoagulants affect human blood platelet biomechanics with implications for high-throughput functional mechanophenotyping.

    Sachs, Laura / Wesche, Jan / Lenkeit, Lea / Greinacher, Andreas / Bender, Markus / Otto, Oliver / Palankar, Raghavendra

    Communications biology

    2022  Volume 5, Issue 1, Page(s) 187

    Language English
    Publishing date 2022-02-23
    Publishing country England
    Document type Published Erratum
    ISSN 2399-3642
    ISSN (online) 2399-3642
    DOI 10.1038/s42003-022-03130-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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