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  1. Article ; Online: Low cross-reactivity of T-cell responses against lipids from Mycobacterium bovis and M. avium paratuberculosis during natural infection.

    Van Rhijn, Ildiko / Nguyen, Thi Kim Anh / Michel, Anita / Cooper, Dave / Govaerts, Marc / Cheng, Tan-Yun / van Eden, Willem / Moody, D Branch / Coetzer, Jacobus A W / Rutten, Victor / Koets, Ad P

    European journal of immunology

    2009  Volume 39, Issue 11, Page(s) 3031–3041

    Abstract: ... by MAP than by M. bovis. The bacterial species-specific nature of the CD1-restricted, adaptive T-cell ... Although CD1 proteins are known to present mycobacterial lipid antigens to T cells, there is little ... understanding of the in vivo behavior of T cells restricted by CD1a, CD1b and CD1c, and the relative ...

    Abstract Although CD1 proteins are known to present mycobacterial lipid antigens to T cells, there is little understanding of the in vivo behavior of T cells restricted by CD1a, CD1b and CD1c, and the relative immunogenicity and immunodominance of individual lipids within the total array of lipids that comprise a bacterium. Because bovines express multiple CD1 proteins and are natural hosts of Mycobacterium bovis and Mycobacterium avium paratuberculosis (MAP), we used them as a new animal model of CD1 function. Here, we report the surprisingly divergent responses against lipids produced by these two pathogens during infection. Despite considerable overlap in lipid content, only three out of 69 animals cross-react with M. bovis and MAP total lipid preparations. The unidentified immunodominant compound of M. bovis is a hydrophilic compound, whereas the immunodominant lipid of MAP is presented by CD1b and was identified as glucose monomycolate (GMM). The preferential recognition of GMM antigen by MAP-infected cattle may be explained by the higher expression of GMM by MAP than by M. bovis. The bacterial species-specific nature of the CD1-restricted, adaptive T-cell response affects the approach to development of lipid based immunodiagnostic tests.
    MeSH term(s) Animals ; Antigens, Bacterial/immunology ; Cattle ; Cross Reactions ; Lipids/immunology ; Mycobacterium avium subsp. paratuberculosis/immunology ; Mycobacterium bovis/immunology ; Paratuberculosis/immunology ; T-Lymphocytes/immunology ; Tuberculosis, Bovine/immunology
    Chemical Substances Antigens, Bacterial ; Lipids
    Language English
    Publishing date 2009-08-18
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 120108-6
    ISSN 1521-4141 ; 0014-2980
    ISSN (online) 1521-4141
    ISSN 0014-2980
    DOI 10.1002/eji.200939619
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Low cross-reactivity of T-cell responses against lipids from Mycobacterium bovis and M. avium paratuberculosis during natural infection

    Van Rhijn, Ildiko / Nguyen, Thi Kim Anh / Michel, Anita / Cooper, Dave / Govaerts, Marc / Cheng, Tan-Yun / van Eden, Willem / Moody, D. Branch / Coetzer, Jacobus A.W / Rutten, Victor / Koets, Ad P

    European journal of immunology. 2009 Nov., v. 39, no. 11

    2009  

    Abstract: ... by MAP than by M. bovis. The bacterial species-specific nature of the CD1-restricted, adaptive T-cell ... Although CD1 proteins are known to present mycobacterial lipid antigens to T cells, there is little ... understanding of the in vivo behavior of T cells restricted by CD1a, CD1b and CD1c, and the relative ...

    Abstract Although CD1 proteins are known to present mycobacterial lipid antigens to T cells, there is little understanding of the in vivo behavior of T cells restricted by CD1a, CD1b and CD1c, and the relative immunogenicity and immunodominance of individual lipids within the total array of lipids that comprise a bacterium. Because bovines express multiple CD1 proteins and are natural hosts of Mycobacterium bovis and Mycobacterium avium paratuberculosis (MAP), we used them as a new animal model of CD1 function. Here, we report the surprisingly divergent responses against lipids produced by these two pathogens during infection. Despite considerable overlap in lipid content, only three out of 69 animals cross-react with M. bovis and MAP total lipid preparations. The unidentified immunodominant compound of M. bovis is a hydrophilic compound, whereas the immunodominant lipid of MAP is presented by CD1b and was identified as glucose monomycolate (GMM). The preferential recognition of GMM antigen by MAP-infected cattle may be explained by the higher expression of GMM by MAP than by M. bovis. The bacterial species-specific nature of the CD1-restricted, adaptive T-cell response affects the approach to development of lipid based immunodiagnostic tests.
    Language English
    Dates of publication 2009-11
    Size p. 3031-3041.
    Publishing place Wiley-VCH Verlag
    Document type Article
    ZDB-ID 120108-6
    ISSN 1521-4141 ; 0014-2980
    ISSN (online) 1521-4141
    ISSN 0014-2980
    DOI 10.1002/eji.200939619
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: T.E.A.M. soil judging--an experiment

    Cooper, T.H

    Journal of agronomic education. Fall 1991. v. 20 (2)

    1991  

    Keywords soil classification ; soil ; educational methods ; soil science ; agricultural education ; Minnesota
    Language English
    Size p. 123-125.
    Document type Article
    ZDB-ID 406210-3
    ISSN 0094-2391
    ISSN 0094-2391
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Mapping the minimal murine T cell and B cell epitopes within a peptide vaccine candidate from the conserved region of the M protein of group A streptococcus.

    Hayman, W A / Brandt, E R / Relf, W A / Cooper, J / Saul, A / Good, M F

    International immunology

    1997  Volume 9, Issue 11, Page(s) 1723–1733

    Abstract: ... However, due to potential cross-reactivity between T cells stimulated by this region of the M protein and host ... The highly conserved C-terminus of the M protein of group A streptococcus (GAS) is a promising ... vaccine candidate. An epitope within the conserved C-terminus of the M protein, peptide 145 (a 20-mer ...

    Abstract The highly conserved C-terminus of the M protein of group A streptococcus (GAS) is a promising vaccine candidate. An epitope within the conserved C-terminus of the M protein, peptide 145 (a 20-mer with the sequence: LRRDLDASREAKKQVEKALE), has been defined which is the target of opsonic antibodies in both humans and mice, and is recognized by the sera of most adults living in areas of high streptococcal exposure. However, due to potential cross-reactivity between T cells stimulated by this region of the M protein and host cardiac myosin, it is critical to define precisely the minimal protective epitopes within p145. Studies have shown that the immunodominant epitope expressed by p145 is conformational, occurring as an alpha-helical coiled-coil. To enable us to map the murine minimal B cell and T cell epitopes within p145, we have used a novel strategy that allowed us to present shorter sequences of p145 in a native-like conformation. The minimal B cell epitope was found to be contained within residues 7-20 of the p145 sequence, and we have shown that mice immunized with this region are able to generate antibodies that bind to and also opsonize the organism GAS. The T cell epitope is located at the N-terminal region of the p145 sequence, residues 3-14. We have managed, therefore, to define a vaccine candidate--a minimal opsonic B cell epitope within the p145 sequence--that does not incorporate a potentially deleterious T cell epitope.
    MeSH term(s) Amino Acid Sequence ; Animals ; Antibodies, Bacterial/biosynthesis ; Antibodies, Bacterial/blood ; Antibodies, Bacterial/immunology ; Antibodies, Monoclonal ; Antibody Specificity ; Antigens, Bacterial/analysis ; Antigens, Bacterial/immunology ; B-Lymphocytes/immunology ; Bacterial Outer Membrane Proteins ; Bacterial Proteins/analysis ; Bacterial Proteins/immunology ; Bacterial Vaccines/analysis ; Bacterial Vaccines/immunology ; Carrier Proteins ; Complement Fixation Tests ; Conserved Sequence ; Epitope Mapping ; Male ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Rheumatic Fever/immunology ; Rheumatic Fever/prevention & control ; T-Lymphocytes/immunology
    Chemical Substances Antibodies, Bacterial ; Antibodies, Monoclonal ; Antigens, Bacterial ; Bacterial Outer Membrane Proteins ; Bacterial Proteins ; Bacterial Vaccines ; Carrier Proteins ; streptococcal M protein
    Language English
    Publishing date 1997-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1013745-2
    ISSN 1460-2377 ; 0953-8178
    ISSN (online) 1460-2377
    ISSN 0953-8178
    DOI 10.1093/intimm/9.11.1723
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Human B cell differentiation. IV. Effect of monoclonal anti-immunoglobulin M and D antibodies on B cell proliferation and differentiation induced by T cell factors.

    Kuritani, T / Cooper, M D

    Journal of immunology (Baltimore, Md. : 1950)

    1983  Volume 131, Issue 3, Page(s) 1306–1311

    Abstract: Monoclonal anti-mu and anti-delta antibodies and mixed lymphocyte reaction-derived T cell factors ...

    Abstract Monoclonal anti-mu and anti-delta antibodies and mixed lymphocyte reaction-derived T cell factors (MLR-TF) were examined alone and in combination for their effects on proliferation and differentiation of human B cells. MLR-TF induced proliferation and subsequent plasma cell differentiation of blood B cells without additional stimulation. The monoclonal anti-mu and anti-delta antibodies alone did not induce proliferation, but each was capable of augmenting B cell proliferation induced by MLR-TF. In contrast, the anti-mu antibody inhibited the MLR-TF induction of IgM plasma cell differentiation but did not affect the differentiation of IgG and IgA plasma cells. The anti-delta antibody had no effect on MLR-TF-induced plasma cell differentiation. Studies using density gradient separation of B cell subpopulations suggest that MLR-TF induce low-density B cells to proliferate and differentiate into plasma cells but that by themselves MLR-TF have little effect on B cells of relatively high density. The latter subpopulation of small resting B cells responded with proliferation to MLR-TF when combined with either the anti-mu or the anti-delta antibody, but these stimuli were insufficient for induction of terminal plasma cell differentiation.
    MeSH term(s) Animals ; Antibodies, Anti-Idiotypic/physiology ; Antibodies, Monoclonal/physiology ; B-Lymphocytes/classification ; B-Lymphocytes/cytology ; B-Lymphocytes/immunology ; Cell Count ; Cell Differentiation/drug effects ; Humans ; Hydroxyurea/pharmacology ; Immunoglobulin D/immunology ; Immunoglobulin M/immunology ; Lymphocyte Activation ; Lymphocyte Culture Test, Mixed ; Mice ; T-Lymphocytes/immunology
    Chemical Substances Antibodies, Anti-Idiotypic ; Antibodies, Monoclonal ; Immunoglobulin D ; Immunoglobulin M ; Hydroxyurea (X6Q56QN5QC)
    Language English
    Publishing date 1983-09
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Third time's a harm? Cardiac risk of SARS-CoV-2 mRNA booster vaccines in younger men.

    Cooper, Leslie T / Hasin, Tal / Ryan, Margaret

    European heart journal

    2024  Volume 45, Issue 15, Page(s) 1336–1338

    MeSH term(s) Male ; Humans ; COVID-19/prevention & control ; SARS-CoV-2/genetics ; Vaccines ; RNA, Messenger
    Chemical Substances Vaccines ; RNA, Messenger
    Language English
    Publishing date 2024-03-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 603098-1
    ISSN 1522-9645 ; 0195-668X
    ISSN (online) 1522-9645
    ISSN 0195-668X
    DOI 10.1093/eurheartj/ehae157
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Measuring the added value of virtual communities of practice for developing the educator role of critical care professionals.

    Ghani, Manisa / Cooper-Ioelu, Pauline / Jowsey, Tanisha

    BMJ open quality

    2024  Volume 13, Issue 1

    Abstract: In healthcare settings, workplace learning is often supported by clinicians who strive to combine service provision and educator roles. We evaluated an international 12-month programme that supports widely distributed critical care health professional ... ...

    Abstract In healthcare settings, workplace learning is often supported by clinicians who strive to combine service provision and educator roles. We evaluated an international 12-month programme that supports widely distributed critical care health professional educators (HPEs) through a virtual community of practice (vCoP). Specifically, we evaluate
    MeSH term(s) Humans ; Community Health Services ; Critical Care ; Education, Medical ; Health Facilities ; Health Personnel
    Language English
    Publishing date 2024-01-09
    Publishing country England
    Document type Journal Article
    ISSN 2399-6641
    ISSN (online) 2399-6641
    DOI 10.1136/bmjoq-2023-002556
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Associations between diabetes status and grip strength trajectory sub-groups in adulthood: findings from over 16 years of follow-up in the MRC National Survey of Health and Development.

    Norris, T / Johnson, W / Cooper, R / Pereira, S M Pinto

    BMC geriatrics

    2023  Volume 23, Issue 1, Page(s) 213

    Abstract: Background: Cross-sectional studies suggest a relationship between diabetes status and weaker grip strength (GS) in adulthood and limited evidence from longitudinal studies has focussed on the association with average change in GS. We aimed to ... ...

    Abstract Background: Cross-sectional studies suggest a relationship between diabetes status and weaker grip strength (GS) in adulthood and limited evidence from longitudinal studies has focussed on the association with average change in GS. We aimed to investigate whether diabetes status was related to membership of distinct GS trajectories in mid-to-late adulthood in 2,263 participants in the Medical Research Council National Survey of Health and Development.
    Methods: Grip strength (kg) was measured at 53, 60-64 and 69 years. Pre-/diabetes was defined at 53 years based on HbA1c > 5.6% and/or doctor-diagnosis of diabetes. Sex-specific latent class trajectory models were developed and multinomial logistic regression was used to investigate the association between pre-/diabetes status and membership into GS trajectory classes.
    Results: For both males and females, a 3-class solution ('High', 'Intermediate', 'Low') provided the best representation of the GS data and the most plausible solution. There was no evidence that pre-/diabetes status was associated with class membership in either sex: e.g., adjusted odds ratios of being in the 'Low' class (vs. 'High') for males with pre-/diabetes (vs. no-diabetes) was 1.07 (95% CI:0.45,2.55).
    Conclusion: Using a flexible data-driven approach to identify GS trajectories between 53 and 69 years, we observed three distinct GS trajectories, all declining, in both sexes. There was no association between pre-/diabetes status at 53 years and membership into these GS trajectories. Understanding the diabetes status-GS trajectories association is vital to ascertain the consequences that projected increases in pre-/diabetes prevalence's are likely to have.
    MeSH term(s) Female ; Humans ; Male ; Cross-Sectional Studies ; Diabetes Mellitus/diagnosis ; Diabetes Mellitus/epidemiology ; Follow-Up Studies ; Hand Strength ; Longitudinal Studies ; Middle Aged ; Aged
    Language English
    Publishing date 2023-04-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2059865-8
    ISSN 1471-2318 ; 1471-2318
    ISSN (online) 1471-2318
    ISSN 1471-2318
    DOI 10.1186/s12877-023-03871-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Shared decision making reimagined.

    Haidet, Paul / Melro, Carolyn M / Fecile, Mary Lynn E / Jarecke, Jodi L T / Moniz, Tracy / Cooper, Amanda B

    Patient education and counseling

    2024  Volume 123, Page(s) 108249

    MeSH term(s) Humans ; Decision Making, Shared ; Decision Making ; Physician-Patient Relations ; Patient Participation
    Language English
    Publishing date 2024-03-12
    Publishing country Ireland
    Document type Editorial
    ZDB-ID 605590-4
    ISSN 1873-5134 ; 0738-3991
    ISSN (online) 1873-5134
    ISSN 0738-3991
    DOI 10.1016/j.pec.2024.108249
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Examining the role of attention during feature binding in visuospatial working memory.

    Goldenhaus-Manning, David T / Cooper, Nicholas R / Loaiza, Vanessa M

    Attention, perception & psychophysics

    2023  Volume 86, Issue 1, Page(s) 354–365

    Abstract: The current experiments address the enduring debate regarding the role of attention in feature binding in visuospatial working memory by considering the nature of the to-be-bound features, i.e., whether they are intrinsic (integrated within the object, ... ...

    Abstract The current experiments address the enduring debate regarding the role of attention in feature binding in visuospatial working memory by considering the nature of the to-be-bound features, i.e., whether they are intrinsic (integrated within the object, such as its color and shape) or extrinsic (not part of the object, such as its spatial location). Specifically, arrays of different-colored shapes in different locations were followed by probed recall: One feature of the probed object prompted recall of one of its remaining two features (e.g., a shape probe prompts recall of color, with the probe displayed at the center of the screen (i.e., without spatial information)) to test the retention of intrinsic (shape, color) and extrinsic (location) features. During the retention interval, we manipulated attention via disruption (Experiment 1) and retro-cues (Experiment 2) to determine their impacts on binding errors, as estimated from a three-parameter mixture model fit to recall error (i.e., the distance between the target and response). Disrupting central versus peripheral attention in Experiment 1 did not respectively increase extrinsic and intrinsic binding errors as predicted, but disrupting central attention reduced target memory of the extrinsic feature relative to a no-disruption baseline. Guiding attention via extrinsic and intrinsic retro-cues in Experiment 2 did not respectively reduce extrinsic and intrinsic binding errors as predicted, but we observed retro-cue benefits to target memory that did not distinguish between extrinsic and intrinsic features. Thus, this work highlights that attentional resources aid target memory, with no consistent distinction between intrinsic and extrinsic features.
    MeSH term(s) Humans ; Memory, Short-Term/physiology ; Attention/physiology ; Cues ; Mental Recall/physiology ; Visual Perception/physiology
    Language English
    Publishing date 2023-01-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2464550-3
    ISSN 1943-393X ; 1943-3921
    ISSN (online) 1943-393X
    ISSN 1943-3921
    DOI 10.3758/s13414-023-02655-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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