LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 102

Search options

  1. Article ; Online: Are Grit Scale Scores or Connor-Davidson Resilience Scale Scores Correlated with Career Achievements Among Physical Therapy Program Graduates?

    Rindflesch, Aaron / Reed, Allison B / Schmitz, Michael J / Schoenecker, Samantha / Vaughn, Brittany / Hollman, John

    Journal of allied health

    2023  Volume 52, Issue 2, Page(s) 141–148

    Abstract: Aims: This study examined how the qualities of grit and resilience correlated with career achievements in physical therapists. The purpose of this study was to determine if select career achievements were correlated with 1) Original Grit Scale (Grit-O) ... ...

    Abstract Aims: This study examined how the qualities of grit and resilience correlated with career achievements in physical therapists. The purpose of this study was to determine if select career achievements were correlated with 1) Original Grit Scale (Grit-O) scores, 2) Short Grit Scale (Grit-S) scores, or 3) Connor-Davidson Resilience Scale (CD-RISC) scores among Mayo Clinic School of Health Sciences Physical Therapy Program graduates from 2000-2018.
    Methods: Cross-sectional research design. Participants were 212 graduates between 2000 and 2018, inclusive. Participants completed the Grit-O, Grit-S, and CD-RISC scales and reported career achievements. Descriptive statistics were used to summarize the demographics, career achievements, grit, and resilience of the subjects. Point biserial and partial correlations were used to examine associations between Grit-O and Grit-S subscales, CD-RISC scores, and career achievements.
    Results: When controlled for gender and time since graduation, there were significant positive relationships between Grit-O Perseverance of Effort and 1) publication in a peer-reviewed journal and 2) attainment of an additional degree. Biological males were significantly more likely to have reported certain career achievements.
    Conclusion: Few of the expected relationships were found, possibly due to a lack of true relationships, a homogeneous population, ceiling effect, or inaccurate self-reports.
    MeSH term(s) Humans ; Male ; Cross-Sectional Studies ; Psychometrics ; Resilience, Psychological ; Self Report ; Surveys and Questionnaires ; Female
    Language English
    Publishing date 2023-06-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 197884-6
    ISSN 1945-404X ; 0090-7421
    ISSN (online) 1945-404X
    ISSN 0090-7421
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Human NK cells confer protection against HIV-1 infection in humanized mice.

    Sungur, Can M / Wang, Qiankun / Ozantürk, Ayşe N / Gao, Hongbo / Schmitz, Aaron J / Cella, Marina / Yokoyama, Wayne M / Shan, Liang

    The Journal of clinical investigation

    2022  Volume 132, Issue 24

    Abstract: The role of NK cells against HIV-1 infections remains to be elucidated in vivo. While humanized mouse models potentially could be used to directly evaluate human NK cell responses during HIV-1 infection, improved functional development of human NK cells ... ...

    Abstract The role of NK cells against HIV-1 infections remains to be elucidated in vivo. While humanized mouse models potentially could be used to directly evaluate human NK cell responses during HIV-1 infection, improved functional development of human NK cells in these hosts is needed. Here, we report the humanized MISTRG-6-15 mouse model, in which NK cells were quick to expand and exhibit degranulation, cytotoxicity, and proinflammatory cytokine production in nonlymphoid organs upon HIV-1 infection but had reduced functionality in lymphoid organs. Although HIV-1 infection induced functional impairment of NK cells, antiretroviral therapy reinvigorated NK cells in response to HIV-1 rebound after analytic treatment interruption. Moreover, a broadly neutralizing antibody, PGT121, enhanced NK cell function in vivo, consistent with antibody-dependent cellular cytotoxicity. Monoclonal antibody depletion of NK cells resulted in higher viral loads in multiple nonlymphoid organs. Overall, our results in humanized MISTRG-6-15 mice demonstrated that NK cells provided direct anti-HIV-1 responses in vivo but were limited in their responses in lymphoid organs.
    MeSH term(s) Humans ; Mice ; Animals ; HIV Infections ; HIV-1 ; Antibody-Dependent Cell Cytotoxicity ; Viral Load ; Killer Cells, Natural
    Language English
    Publishing date 2022-12-15
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3067-3
    ISSN 1558-8238 ; 0021-9738
    ISSN (online) 1558-8238
    ISSN 0021-9738
    DOI 10.1172/JCI162694
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Human NK cells confer protection against HIV-1 infection in humanized mice

    Can M. Sungur / Qiankun Wang / Ayşe N. Ozantürk / Hongbo Gao / Aaron J. Schmitz / Marina Cella / Wayne M. Yokoyama / Liang Shan

    The Journal of Clinical Investigation, Vol 132, Iss

    2022  Volume 24

    Abstract: The role of NK cells against HIV-1 infections remains to be elucidated in vivo. While humanized mouse models potentially could be used to directly evaluate human NK cell responses during HIV-1 infection, improved functional development of human NK cells ... ...

    Abstract The role of NK cells against HIV-1 infections remains to be elucidated in vivo. While humanized mouse models potentially could be used to directly evaluate human NK cell responses during HIV-1 infection, improved functional development of human NK cells in these hosts is needed. Here, we report the humanized MISTRG-6-15 mouse model, in which NK cells were quick to expand and exhibit degranulation, cytotoxicity, and proinflammatory cytokine production in nonlymphoid organs upon HIV-1 infection but had reduced functionality in lymphoid organs. Although HIV-1 infection induced functional impairment of NK cells, antiretroviral therapy reinvigorated NK cells in response to HIV-1 rebound after analytic treatment interruption. Moreover, a broadly neutralizing antibody, PGT121, enhanced NK cell function in vivo, consistent with antibody-dependent cellular cytotoxicity. Monoclonal antibody depletion of NK cells resulted in higher viral loads in multiple nonlymphoid organs. Overall, our results in humanized MISTRG-6-15 mice demonstrated that NK cells provided direct anti–HIV-1 responses in vivo but were limited in their responses in lymphoid organs.
    Keywords Immunology ; Medicine ; R
    Language English
    Publishing date 2022-12-01T00:00:00Z
    Publisher American Society for Clinical Investigation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Evaluation of HIV-1 latency reversal and antibody-dependent viral clearance by quantification of singly spliced HIV-1

    Gao, Hongbo / Ozantürk, Ayşe N / Wang, Qiankun / Harlan, Gray H / Schmitz, Aaron J / Presti, Rachel M / Deng, Kai / Shan, Liang

    Journal of virology

    2021  Volume 95, Issue 11

    Abstract: The latent reservoir of HIV-1 is a major barrier for viral eradication. Potent HIV-1 broadly neutralizing antibodies (bNabs) have been used to prevent and treat HIV-1 infections in animal models and clinical trials. Combination of bNabs and latency- ... ...

    Abstract The latent reservoir of HIV-1 is a major barrier for viral eradication. Potent HIV-1 broadly neutralizing antibodies (bNabs) have been used to prevent and treat HIV-1 infections in animal models and clinical trials. Combination of bNabs and latency-reversing agents (LRAs) is considered a promising approach for HIV-1 eradication. PCR-based assays that can rapidly and specifically measure singly spliced HIV-1
    Language English
    Publishing date 2021-03-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/JVI.02124-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: The context dependence of non-consumptive predator effects.

    Wirsing, Aaron J / Heithaus, Michael R / Brown, Joel S / Kotler, Burt P / Schmitz, Oswald J

    Ecology letters

    2020  Volume 24, Issue 1, Page(s) 113–129

    Abstract: Non-consumptive predator effects (NCEs) are now widely recognised for their capacity to shape ecosystem structure and function. Yet, forecasting the propagation of these predator-induced trait changes through particular communities remains a challenge. ... ...

    Abstract Non-consumptive predator effects (NCEs) are now widely recognised for their capacity to shape ecosystem structure and function. Yet, forecasting the propagation of these predator-induced trait changes through particular communities remains a challenge. Accordingly, focusing on plasticity in prey anti-predator behaviours, we conceptualise the multi-stage process by which predators trigger direct and indirect NCEs, review and distil potential drivers of contingencies into three key categories (properties of the prey, predator and setting), and then provide a general framework for predicting both the nature and strength of direct NCEs. Our review underscores the myriad factors that can generate NCE contingencies while guiding how research might better anticipate and account for them. Moreover, our synthesis highlights the value of mapping both habitat domains and prey-specific patterns of evasion success ('evasion landscapes') as the basis for predicting how direct NCEs are likely to manifest in any particular community. Looking ahead, we highlight two key knowledge gaps that continue to impede a comprehensive understanding of non-consumptive predator-prey interactions and their ecosystem consequences; namely, insufficient empirical exploration of (1) context-dependent indirect NCEs and (2) the ways in which direct and indirect NCEs are shaped interactively by multiple drivers of context dependence.
    MeSH term(s) Animals ; Ecosystem ; Food Chain ; Forecasting ; Predatory Behavior
    Language English
    Publishing date 2020-09-29
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1441608-6
    ISSN 1461-0248 ; 1461-023X
    ISSN (online) 1461-0248
    ISSN 1461-023X
    DOI 10.1111/ele.13614
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: The context dependence of non‐consumptive predator effects

    Wirsing, Aaron J. / Heithaus, Michael R. / Brown, Joel S. / Kotler, Burt P. / Schmitz, Oswald J.

    Ecology letters. 2021 Jan., v. 24, no. 1

    2021  

    Abstract: Non‐consumptive predator effects (NCEs) are now widely recognised for their capacity to shape ecosystem structure and function. Yet, forecasting the propagation of these predator‐induced trait changes through particular communities remains a challenge. ... ...

    Abstract Non‐consumptive predator effects (NCEs) are now widely recognised for their capacity to shape ecosystem structure and function. Yet, forecasting the propagation of these predator‐induced trait changes through particular communities remains a challenge. Accordingly, focusing on plasticity in prey anti‐predator behaviours, we conceptualise the multi‐stage process by which predators trigger direct and indirect NCEs, review and distil potential drivers of contingencies into three key categories (properties of the prey, predator and setting), and then provide a general framework for predicting both the nature and strength of direct NCEs. Our review underscores the myriad factors that can generate NCE contingencies while guiding how research might better anticipate and account for them. Moreover, our synthesis highlights the value of mapping both habitat domains and prey‐specific patterns of evasion success (‘evasion landscapes’) as the basis for predicting how direct NCEs are likely to manifest in any particular community. Looking ahead, we highlight two key knowledge gaps that continue to impede a comprehensive understanding of non‐consumptive predator–prey interactions and their ecosystem consequences; namely, insufficient empirical exploration of (1) context‐dependent indirect NCEs and (2) the ways in which direct and indirect NCEs are shaped interactively by multiple drivers of context dependence.
    Keywords antipredatory behavior ; ecological footprint ; ecological function ; ecosystems ; habitats ; predator-prey relationships ; predators ; prediction
    Language English
    Dates of publication 2021-01
    Size p. 113-129.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note REVIEW
    ZDB-ID 1441608-6
    ISSN 1461-0248 ; 1461-023X
    ISSN (online) 1461-0248
    ISSN 1461-023X
    DOI 10.1111/ele.13614
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  7. Article ; Online: Consensus and Equipose in the Management of Military Trainee Femoral Neck Stress Fractures: A Survey of Military Surgeons.

    Chung, Brandon H / Shaw, K Aaron / Burke, Joseph S / Jackson, Keith L / Schmitz, Matthew R / Boomsma, Shawn / Hurvitz, Andrew P / Moreland, Colleen M / O'Brien, Frederick P / Antosh, Ivan J / Huh, Jeannie / Waterman, Brian R / Wheatley, Benjamin M / Potter, Benjamin K

    Military medicine

    2023  Volume 189, Issue 1-2, Page(s) e82–e89

    Abstract: Background: Femoral neck stress fractures (FNSFs) are a unique injury pattern not commonly treated in the civilian trauma population; however, it is particularly high with military trainees engaged in basic combat training. To date, no study has ... ...

    Abstract Background: Femoral neck stress fractures (FNSFs) are a unique injury pattern not commonly treated in the civilian trauma population; however, it is particularly high with military trainees engaged in basic combat training. To date, no study has surveyed a population of military orthopedic surgeons on treatment preferences for military service members (SMs) with FNSF.
    Questions: We aim to evaluate the extent of clinical equipoise that exists in the management of these injuries, hypothesizing that there would be consensus in the factors dictating surgical and non-surgical intervention for FNSF.
    Patients and methods: A 27-question survey was created and sent to U.S. military orthopedic surgeon members of the Society of Military Orthopaedic Surgeons. The survey was designed in order to gather the experience among surgeons in treating FNSF and identifying variables that play a role in the treatment algorithm for these patients. In addition, seven detailed, clinical vignettes were presented to further inquire on surgeon treatment preferences. Binomial distribution analysis was used to evaluate for common trends within the surgeon's treatment preferences.
    Results: Seventy orthopedic surgeons completed the survey, the majority of whom were on active duty status in the U.S. Military (82.86%) and having under 5 years of experience (61.43%). Majority of surgeons elected for a multiple screw construct (92.86%), however the orientation of the multiple screws was dependent on whether the fracture was open or closed. Management for compression-sided FNSF involving ≥50% of the femoral neck width, tension-sided FNSF, and stress fractures demonstrating fracture line progression had consensus for operative management. Respondents agreed upon prophylactic fixation of the contralateral hip if the following factors were involved: Complete fracture (98.57%), compression-sided fracture line >75% (88.57%), compression-sided fracture line >50-75% with hip effusion (88.57%), contralateral tension-sided fracture (87.14%), and compression-sided fracture line >50-75% (84.29%). An FNSF < 50% on the contralateral femoral neck or a hip effusion was indeterminate in surgeons indicating need for prophylactic fixation. Majority of surgeons (77.1%) utilized restricted toe-touch weight-bearing for postoperative mobility restrictions.
    Conclusions: Consensus exists for surgical and non-surgical management of FNSF by U.S. military orthopedic surgeons, despite the preponderance of surgeons reporting a low annual volume of FNSF cases treated. However, there are certain aspects in the operative and non-operative management of FNSF that are unanimously adhered to. Specifically, our results demonstrate that there is no clear indication on the management of FNSF when an associated hip effusion is involved. Additionally, the indications for surgically treating contralateral FNSF are unclear.
    Level of evidence: IV.
    MeSH term(s) Humans ; Fractures, Stress/surgery ; Fractures, Stress/epidemiology ; Femur Neck ; Military Personnel ; Consensus ; Femoral Neck Fractures/surgery ; Surveys and Questionnaires ; Surgeons
    Language English
    Publishing date 2023-06-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 391061-1
    ISSN 1930-613X ; 0026-4075
    ISSN (online) 1930-613X
    ISSN 0026-4075
    DOI 10.1093/milmed/usac426
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Iatrogenic Hip Instability Treated With Periacetabular Osteotomy.

    Sheean, Andrew J / Barrow, Aaron E / Burns, Travis C / Schmitz, Matthew R

    The Journal of the American Academy of Orthopaedic Surgeons

    2017  Volume 25, Issue 8, Page(s) 594–599

    Abstract: Hip dislocation following hip arthroscopy is a devastating complication. Previous reports of arthroscopy-related iatrogenic instability have focused on strategies aimed at restoring the stabilizing effects of the hip joint capsuloligamentous complex. ... ...

    Abstract Hip dislocation following hip arthroscopy is a devastating complication. Previous reports of arthroscopy-related iatrogenic instability have focused on strategies aimed at restoring the stabilizing effects of the hip joint capsuloligamentous complex. Less has been written about treatment options for patients in whom deficient acetabular coverage of the femoral head is implicated in the functionally unstable hip joint. Given this relative paucity of information, an optimal treatment approach has yet to be elucidated for these patients. Periacetabular osteotomy has been described as a treatment for iatrogenic hip instability related to surgical hip dislocation; however, to our knowledge, this is the first case of a patient with hip arthroscopy-related iatrogenic instability manifesting as recurrent, frank dislocations treated with periacetabular osteotomy.
    Language English
    Publishing date 2017-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1200524-1
    ISSN 1940-5480 ; 1067-151X
    ISSN (online) 1940-5480
    ISSN 1067-151X
    DOI 10.5435/JAAOS-D-16-00231
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Leveraging vaccination-induced protective antibodies to define conserved epitopes on influenza N2 neuraminidase.

    Lei, Ruipeng / Kim, Wooseob / Lv, Huibin / Mou, Zongjun / Scherm, Michael J / Schmitz, Aaron J / Turner, Jackson S / Tan, Timothy J C / Wang, Yiquan / Ouyang, Wenhao O / Liang, Weiwen / Rivera-Cardona, Joel / Teo, Chuyun / Graham, Claire S / Brooke, Christopher B / Presti, Rachel M / Mok, Chris K P / Krammer, Florian / Dai, Xinghong /
    Ellebedy, Ali H / Wu, Nicholas C

    Immunity

    2023  Volume 56, Issue 11, Page(s) 2621–2634.e6

    Abstract: There is growing appreciation for neuraminidase (NA) as an influenza vaccine target; however, its antigenicity remains poorly characterized. In this study, we isolated three broadly reactive N2 antibodies from the plasmablasts of a single vaccinee, ... ...

    Abstract There is growing appreciation for neuraminidase (NA) as an influenza vaccine target; however, its antigenicity remains poorly characterized. In this study, we isolated three broadly reactive N2 antibodies from the plasmablasts of a single vaccinee, including one that cross-reacts with NAs from seasonal H3N2 strains spanning five decades. Although these three antibodies have diverse germline usages, they recognize similar epitopes that are distant from the NA active site and instead involve the highly conserved underside of NA head domain. We also showed that all three antibodies confer prophylactic and therapeutic protection in vivo, due to both Fc effector functions and NA inhibition through steric hindrance. Additionally, the contribution of Fc effector functions to protection in vivo inversely correlates with viral growth inhibition activity in vitro. Overall, our findings advance the understanding of NA antibody response and provide important insights into the development of a broadly protective influenza vaccine.
    MeSH term(s) Humans ; Influenza, Human/prevention & control ; Influenza Vaccines ; Neuraminidase ; Orthomyxoviridae Infections/prevention & control ; Influenza A Virus, H3N2 Subtype ; Epitopes ; Antibodies, Viral ; Antibodies, Monoclonal ; Influenza A Virus, H1N1 Subtype ; Vaccination ; Hemagglutinin Glycoproteins, Influenza Virus
    Chemical Substances Influenza Vaccines ; Neuraminidase (EC 3.2.1.18) ; Epitopes ; Antibodies, Viral ; Antibodies, Monoclonal ; Hemagglutinin Glycoproteins, Influenza Virus
    Language English
    Publishing date 2023-11-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1217235-2
    ISSN 1097-4180 ; 1074-7613
    ISSN (online) 1097-4180
    ISSN 1074-7613
    DOI 10.1016/j.immuni.2023.10.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Impaired Cellular Immune Responses During the First Week of Severe Acute Influenza Infection.

    Turner, Jackson S / Lei, Tingting / Schmitz, Aaron J / Day, Aaron / Choreño-Parra, José Alberto / Jiménez-Alvarez, Luis / Cruz-Lagunas, Alfredo / House, Stacey L / Zúñiga, Joaquín / Ellebedy, Ali H / Mudd, Philip A

    The Journal of infectious diseases

    2020  Volume 222, Issue 7, Page(s) 1235–1244

    Abstract: Background: Cellular immune responses are not well characterized during the initial days of acute symptomatic influenza infection.: Methods: We developed a prospective cohort of human subjects with confirmed influenza illness of varying severity who ... ...

    Abstract Background: Cellular immune responses are not well characterized during the initial days of acute symptomatic influenza infection.
    Methods: We developed a prospective cohort of human subjects with confirmed influenza illness of varying severity who presented within a week after symptom onset. We characterized lymphocyte and monocyte populations as well as antigen-specific CD8+ T-cell and B-cell responses from peripheral blood mononuclear cells using flow cytometry and enzyme-linked immunospot assays.
    Results: We recruited 68 influenza-infected individuals on average 3.5 days after the onset of symptoms. Three patients required mechanical ventilation. Influenza-specific CD8+ T-cell responses expanded before the appearance of plasmablast B cells. However, the influenza-specific CD8+ T-cell response was lower in infected subjects than responses seen in uninfected control subjects. Circulating populations of inflammatory monocytes were increased in most subjects compared with healthy controls. Inflammatory monocytes were significantly reduced in the 3 subjects requiring mechanical ventilation. Inflammatory monocytes were also reduced in a separate validation cohort of mechanically ventilated patients.
    Conclusions: Antigen-specific CD8+ T cells respond early during acute influenza infection at magnitudes that are lower than responses seen in uninfected individuals. Circulating inflammatory monocytes increase during acute illness and low absolute numbers are associated with very severe disease.
    MeSH term(s) Adult ; Aged ; CD8-Positive T-Lymphocytes/pathology ; Female ; Humans ; Immunity, Cellular ; Influenza, Human/blood ; Influenza, Human/immunology ; Influenza, Human/pathology ; Leukocyte Count ; Lymphocyte Count ; Lymphocytes/pathology ; Male ; Middle Aged ; Monocytes/pathology ; Prospective Studies ; Respiration, Artificial ; Severity of Illness Index
    Language English
    Publishing date 2020-05-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiaa226
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top