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Aftab O, Sundström Y, Bergqvist F, Kultima K, Gustafsson MG, Larsson R, Sundström M, Ossipova E, Lengqvist J, Jakobsson PJ, Rubin J, Berg L. A8.07 Characterising effects of epigenetic regulation in assays using peripheral blood mononuclear cells from patients with inflammatory diseases. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-209124.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rostila M, Berg L, Saarela J, Hjern A. Sibling death in childhood predicts mortality in young adults-a Swedish national cohort study. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv168.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Berg L, Edvardsson A, Nordström F, Ceberg S. EP-1487: Investigation of gating techniques and visual guidance using surface scanning and pressure monitoring. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41479-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Särnblad S, Berg L, Detlofsson I, Jönsson A, Forsander G. Diabetes management in Swedish schools: a national survey of attitudes of parents, children, and diabetes teams. Pediatr Diabetes 2014; 15:550-6. [PMID: 24635781 DOI: 10.1111/pedi.12133] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 12/20/2013] [Accepted: 01/22/2014] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Parents of children with type 1 diabetes often raise complaints about self-care support during school time. The aim of this study was to investigate attitudes to diabetes care in school reported by children with type 1 diabetes, their parents, and their diabetes teams. METHODS Children who had completed preschool class or at least one grade in the 9-yr compulsory school system were invited to participate. Data were collected using separate questionnaires for the children and their parents. In addition, the members of the diabetes team answered a separate questionnaire. All pediatric diabetes centers in Sweden were invited to participate in the study. RESULTS All Swedish children and adolescents with diabetes are treated at pediatric diabetes centers. Out of 44 eligible centers, 41 were able to participate. The questionnaires were completed by 317 children and adolescents and 323 parents. The mean age was 11.4 ± 2.7 yr and hemoglobin A1c (HbA1c) was 61.8 ± 12.4 mmol/mol (7.8 ± 1.1%). For 57% of the children, there was no member of staff at the school with principal responsibility to support diabetes self-care. A written action plan for hypoglycemia existed for 60% of the children. Twenty-one percent of the parents regularly gave less insulin than they calculated would be needed at breakfast because of fear of hypoglycemia during school time. CONCLUSIONS Although Sweden has legislation underlining the specific need for diabetes care in school, this nationwide study demonstrates deficiencies in the support of self-care management.
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Svenningsson P, Berg L, Matthews D, Ionescu DF, Richards E, Niciu M, Malinger A, Toups M, Manji H, Trivedi MH, Zarate CA, Greengard P. Preliminary evidence that early reduction in p11 levels in natural killer cells and monocytes predicts the likelihood of antidepressant response to chronic citalopram. Mol Psychiatry 2014; 19:962-4. [PMID: 24614495 PMCID: PMC4161667 DOI: 10.1038/mp.2014.13] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The prediction of treatment response in many neuropsychiatric disorders would be facilitated by easily accessible biomarkers. Using flow cytometry, we herein demonstrate correlations between early reductions of p11 levels in Natural Killer (NK) cells and monocytes and antidepressant response to citalopram in patients with major depressive disorder (MDD).
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Laurent AJ, Bindslev N, Johansson B, Berg L. Synergistic effects of ethanol and isopentenyl pyrophosphate on expansion of γδ T cells in synovial fluid from patients with arthritis. PLoS One 2014; 9:e103683. [PMID: 25090614 PMCID: PMC4121167 DOI: 10.1371/journal.pone.0103683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 04/29/2014] [Indexed: 01/03/2023] Open
Abstract
Low to moderate ethanol consumption has been associated with protective effects in autoimmune diseases such as rheumatoid arthritis, RA. An expansion of γδ T cells induced by isopentenyl pyrophosphate, IPP, likewise seems to have a protective role in arthritis. The aim of this project was to test the hypothesis that low doses of ethanol can enhance IPP-induced expansion of synovial fluid γδ T cells from patients with arthritis and may thereby potentially account for the beneficial effects of ethanol on symptoms of the arthritic process. Thus, mononuclear cells from synovial fluid (SF) from 15 patients with arthritis and from peripheral blood (PB) from 15 healthy donors were stimulated with low concentrations of ethanol and IPP for 7 days in vitro. IPP in combination with ethanol 0.015%, 2.5 mM, equivalent to the decrease per hour in blood ethanol concentration due to metabolism, gave a significantly higher fractional expansion of SF γδ T cells compared with IPP alone after 7 days (ratio 10.1+/-4.0, p<0.0008, n = 12) in patients with arthritis. Similar results were obtained for PB γδ T cells from healthy controls (ratio 2.0+/-0.4, p<0.011, n = 15). The augmented expansion of γδ T cells in SF is explained by a higher proliferation (p = 0.0034, n = 11) and an increased survival (p<0.005, n = 11) in SF cultures stimulated with IPP plus ethanol compared to IPP alone. The synergistic effects of IPP and ethanol indicate a possible allosteric effect of ethanol. Similar effects could be seen when stimulating PB with ethanol in presence of risedronate, which has the ability to increase endogenous levels of IPP. We conclude that expansion of γδ T cells by combinatorial drug effects, possibly in fixed-dose combination, FDC, of ethanol in the presence of IPP might give a protective role in diseases such as arthritis.
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MESH Headings
- Adult
- Aged
- Arthritis, Rheumatoid/drug therapy
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/pathology
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Drug Synergism
- Ethanol/pharmacology
- Etidronic Acid/analogs & derivatives
- Etidronic Acid/pharmacology
- Etidronic Acid/therapeutic use
- Female
- Hemiterpenes/pharmacology
- Humans
- Interferon-gamma/biosynthesis
- Lymphocyte Activation/drug effects
- Male
- Middle Aged
- Models, Biological
- Organophosphorus Compounds/pharmacology
- Phenotype
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Receptors, Antigen, T-Cell, gamma-delta/metabolism
- Risedronic Acid
- Synovial Fluid/cytology
- Synovial Fluid/drug effects
- Synovial Fluid/immunology
- T-Lymphocyte Subsets/drug effects
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Nielsen N, Pascal V, Fasth AER, Sundström Y, Galsgaard ED, Ahern D, Andersen M, Baslund B, Bartels EM, Bliddal H, Feldmann M, Malmström V, Berg L, Spee P, Söderström K. Balance between activating NKG2D, DNAM-1, NKp44 and NKp46 and inhibitory CD94/NKG2A receptors determine natural killer degranulation towards rheumatoid arthritis synovial fibroblasts. Immunology 2014; 142:581-93. [PMID: 24673109 PMCID: PMC4107668 DOI: 10.1111/imm.12271] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 01/30/2014] [Accepted: 02/03/2014] [Indexed: 12/28/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation and synovial hyperplasia leading to progressive joint destruction. Fibroblast-like synoviocytes (FLS) are central components of the aggressive, tumour-like synovial structure termed pannus, which invades the joint space and cartilage. A distinct natural killer (NK) cell subset expressing the inhibitory CD94/NKG2A receptor is present in RA synovial fluid. Little is known about possible cellular interactions between RA-FLS and NK cells. We used cultured RA-FLS and the human NK cell line Nishi, of which the latter expresses an NK receptor repertoire similar to that of NK cells in RA synovial fluid, as an in vitro model system of RA-FLS/NK cell cross-talk. We show that RA-FLS express numerous ligands for both activating and inhibitory NK cell receptors, and stimulate degranulation of Nishi cells. We found that NKG2D, DNAM-1, NKp46 and NKp44 are the key activating receptors involved in Nishi cell degranulation towards RA-FLS. Moreover, blockade of the interaction between CD94/NKG2A and its ligand HLA-E expressed on RA-FLS further enhanced Nishi cell degranulation in co-culture with RA-FLS. Using cultured RA-FLS and the human NK cell line Nishi as an in vitro model system of RA-FLS/NK cell cross-talk, our results suggest that cell-mediated cytotoxicity of RA-FLS may be one mechanism by which NK cells influence local joint inflammation in RA.
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MESH Headings
- Antigens, Differentiation, T-Lymphocyte/immunology
- Antigens, Differentiation, T-Lymphocyte/metabolism
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/pathology
- Cell Degranulation/immunology
- Cell Line
- Female
- Fibroblasts/immunology
- Fibroblasts/metabolism
- Fibroblasts/pathology
- Histocompatibility Antigens Class I/biosynthesis
- Histocompatibility Antigens Class I/immunology
- Humans
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Killer Cells, Natural/pathology
- Male
- NK Cell Lectin-Like Receptor Subfamily C/immunology
- NK Cell Lectin-Like Receptor Subfamily C/metabolism
- NK Cell Lectin-Like Receptor Subfamily D/immunology
- NK Cell Lectin-Like Receptor Subfamily D/metabolism
- NK Cell Lectin-Like Receptor Subfamily K/immunology
- NK Cell Lectin-Like Receptor Subfamily K/metabolism
- Natural Cytotoxicity Triggering Receptor 1/immunology
- Natural Cytotoxicity Triggering Receptor 1/metabolism
- Natural Cytotoxicity Triggering Receptor 2/immunology
- Natural Cytotoxicity Triggering Receptor 2/metabolism
- Synovial Membrane/immunology
- Synovial Membrane/metabolism
- Synovial Membrane/pathology
- Up-Regulation/immunology
- HLA-E Antigens
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Djernaes J, Vedding Nielsen J, Berg L. Effect of X-Ray Beam Angle and Superimposition on Radiographic Evaluation of Kissing Spines Syndrome. Equine Vet J 2014. [DOI: 10.1111/evj.12267_120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pascal V, Sundström Y, Fasth A, Malmström V, Berg L, Kvist P, Spee P, Galsgaard E. AB0071 Characterization of NNC141-0100, a therapeutic antibody targeting inhibitory CD94/NKG2A receptors expressed in inflamed joints of rheumatoid arthritis patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Söderström K, Sundström Y, Berg L, Schepis D, Galsgaard E, Klareskog L, Wagtmann N. OP0142 Masking CD94/NKG2A using a novel therapeutic MAB results in significant suppression of IL-6 levels and reduced osteoclast formation in rheumatoid arthritis ex vivo cultures. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Avik A, Sundström Y, Berg L, Bruchfeld A, Malmström V, Gunnarsson I. GPA and MPA patients have different serum cytokine profiles. Presse Med 2013. [DOI: 10.1016/j.lpm.2013.02.141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Öhlén J, Berg L, Björk Brämberg E, Engström Å, German Millberg L, Höglund I, Jacobsson C, Lepp M, Lidén E, Lindström I, Petzäll K, Söderberg S, Wijk H. Students' learning as the focus for shared involvement between universities and clinical practice: a didactic model for postgraduate degree projects. ADVANCES IN HEALTH SCIENCES EDUCATION : THEORY AND PRACTICE 2012; 17:471-487. [PMID: 21879390 DOI: 10.1007/s10459-011-9323-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 08/21/2011] [Indexed: 05/31/2023]
Abstract
In an academic programme, completion of a postgraduate degree project could be a significant means of promoting student learning in evidence- and experience-based practice. In specialist nursing education, which through the European Bologna process would be raised to the master's level, there is no tradition of including a postgraduate degree project. The aim was to develop a didactic model for specialist nursing students' postgraduate degree projects within the second cycle of higher education (master's level) and with a specific focus on nurturing shared involvement between universities and healthcare settings. This study embodies a participatory action research and theory-generating design founded on empirically practical try-outs. The 3-year project included five Swedish universities and related healthcare settings. A series of activities was performed and a number of data sources secured. Constant comparative analysis was applied. A didactic model is proposed for postgraduate degree projects in specialist nursing education aimed at nurturing shared involvement between universities and healthcare settings. The focus of the model is student learning in order to prepare the students for participation as specialist nurses in clinical knowledge development. The model is developed for the specialist nursing education, but it is general and could be applicable to various education programmes.
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Vig S, Dowsett C, Berg L, Caravaggi C, Rome P, Birke-Sorensen H, Bruhin A, Chariker M, Depoorter M, Dunn R, Duteille F, Ferreira F, Francos Martínez J, Grudzien G, Hudson D, Ichioka S, Ingemansson R, Jeffery S, Krug E, Lee C, Malmsjo M, Runkel N, Martin R, Smith J. Evidence-based recommendations for the use of negative pressure wound therapy in chronic wounds: Steps towards an international consensus. J Tissue Viability 2011; 20 Suppl 1:S1-18. [DOI: 10.1016/j.jtv.2011.07.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Johansson SE, Rollman E, Chung AW, Center RJ, Hejdeman B, Stratov I, Hinkula J, Wahren B, Kärre K, Kent SJ, Berg L. NK cell function and antibodies mediating ADCC in HIV-1-infected viremic and controller patients. Viral Immunol 2011; 24:359-68. [PMID: 21958370 DOI: 10.1089/vim.2011.0025] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Natural killer (NK) cells have been suggested to play a protective role in HIV disease progression. One potent effector mechanism of NK cells is antibody-dependent cellular cytotoxicity (ADCC) mediated by antiviral antibodies binding to the FcγRIIIa receptor (CD16) on NK cells. We investigated NK cell-mediated ADCC function and the presence of ADCC antibodies in plasma from 20 HIV-1-infected patients and 10 healthy donors. The HIV-positive patients were divided into two groups: six who controlled viremia for at least 8 y without treatment (controllers), and 14 who were persistently viremic and not currently on treatment. Plasma from both patient groups induced NK cell IFN-γ expression and degranulation in response to HIV-1 envelope (Env) gp140-protein-coated cells. Patient antibodies mediating ADCC were largely directed towards the Env V3 loop, as identified by a gp140 protein lacking the V3 loop. Interestingly, in two controllers ADCC-mediating antibodies were more broadly directed to other parts of Env. A high viral load in patients correlated with decreased ADCC-mediated cytolysis of gp140-protein-coated target cells. NK cells from both infected patients and healthy donors degranulated efficiently in the presence of antibody-coated HIV-1-infected Jurkat cells. In conclusion, the character of ADCC-mediating antibodies differed in some controllers compared to viremic patients. NK cell ADCC activity is not compromised in HIV-infected patients.
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Birke-Sorensen H, Malmsjo M, Rome P, Hudson D, Krug E, Berg L, Bruhin A, Caravaggi C, Chariker M, Depoorter M, Dowsett C, Dunn R, Duteille F, Ferreira F, Martínez JF, Grudzien G, Ichioka S, Ingemansson R, Jeffery S, Lee C, Vig S, Runkel N, Martin R, Smith J. Evidence-based recommendations for negative pressure wound therapy: Treatment variables (pressure levels, wound filler and contact layer) – Steps towards an international consensus. J Plast Reconstr Aesthet Surg 2011; 64 Suppl:S1-16. [DOI: 10.1016/j.bjps.2011.06.001] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 05/22/2011] [Accepted: 06/03/2011] [Indexed: 01/14/2023]
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Götherström C, Lundqvist A, Duprez IR, Childs R, Berg L, le Blanc K. Fetal and adult multipotent mesenchymal stromal cells are killed by different pathways. Cytotherapy 2011; 13:269-78. [DOI: 10.3109/14653249.2010.523077] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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42
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Johansson SE, Brauner H, Hinkula J, Wahren B, Berg L, Johansson MH. Accumulation and activation of natural killer cells in local intraperitoneal HIV-1/MuLV infection results in early control of virus infected cells. Cell Immunol 2011; 272:71-8. [DOI: 10.1016/j.cellimm.2011.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 08/19/2011] [Accepted: 09/09/2011] [Indexed: 11/16/2022]
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44
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Delgado M, Berg L, Montoy J, Ginde A, Camargo C. 449: Availability of Routine HIV Screening In U.S. Emergency Departments. Ann Emerg Med 2010. [DOI: 10.1016/j.annemergmed.2010.06.492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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45
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Gertow J, Berglund S, Okas M, Uzunel M, Berg L, Kärre K, Mattsson J, Uhlin M. Characterization of long-term mixed donor-donor chimerism after double cord blood transplantation. Clin Exp Immunol 2010; 162:146-55. [PMID: 20731674 DOI: 10.1111/j.1365-2249.2010.04212.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Double cord blood transplantation (DCBT) with two matched or partially matched cord blood units has been implemented successfully to circumvent the limitations of graft cell dose associated with single CBT. After DCBT, sustained haematopoiesis is derived almost exclusively from only one of the donated units. None the less, we previously observed two of six evaluable DCBT patients still having mixed donor-donor chimerism at 28 and 45 months post-transplantation, respectively. In the present study we utilize flow cytometry techniques to perform the first thorough analysis of phenotype and functionality of cord blood units in patients with mixed donor-donor chimerism. Our results suggest that the two stable cord blood units are different phenotypically and functionally: one unit shows more naive T cells, lower T cell cytokine production and higher frequencies of natural killer cells, the other shows higher frequencies of well-differentiated and functional lymphocytes. Additionally, in comparison with control patients having a single prevailing cord blood unit, the patients with donor-donor chimerism exhibit less overall T cell cytokine production and a smaller fraction of memory T cells. Furthermore, our results indicate that human leucocyte antigen-C match of donor units may partly explain the development of a donor-donor mixed chimerism.
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Lindh E, Rosmaraki E, Berg L, Brauner H, Karlsson MCI, Peltonen L, Höglund P, Winqvist O. AIRE deficiency leads to impaired iNKT cell development. J Autoimmun 2010; 34:66-72. [PMID: 19651488 DOI: 10.1016/j.jaut.2009.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Revised: 07/10/2009] [Accepted: 07/12/2009] [Indexed: 12/31/2022]
Abstract
Autoimmune Polyendocrine Syndrome type I (APS I) is caused by mutations in the Autoimmune Regulator gene (AIRE), and results in the immunological destruction of endocrine organs. Herein we have characterized the CD1d-restricted invariant NKT cells (iNKT) and NK cells in APS I patients and Aire(-/-) mice, two cell populations known to play a role in the regulation of autoimmune disease. We show that the frequency of circulating iNKT cells is reduced in APS I patients compared to healthy controls. In accordance with this, iNKT cells are significantly reduced in the thymus and peripheral organs of Aire(-/-) mice. Bone marrow transfer from wild type donors into lethally irradiated Aire(-/-) recipients led to a decreased iNKT cell population in the liver, suggesting an impaired development of iNKT cells in the absence of Aire expression in radio-resistant cells. In contrast to the iNKT cells, both conventional NK cells and thymus-derived NK cells were unaffected by Aire deficiency and differentiated normally in Aire(-/-) mice. Our results show that expression of Aire in radio-resistant cells is important for the development of iNKT cells, whereas NK cell development and function does not depend on Aire.
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MESH Headings
- Animals
- Bone Marrow Transplantation
- Cells, Cultured
- Cytotoxicity, Immunologic
- Female
- Humans
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Killer Cells, Natural/pathology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mutation/genetics
- Natural Killer T-Cells/immunology
- Natural Killer T-Cells/metabolism
- Natural Killer T-Cells/pathology
- Polyendocrinopathies, Autoimmune/genetics
- Polyendocrinopathies, Autoimmune/immunology
- Polyendocrinopathies, Autoimmune/metabolism
- Radiation Chimera
- Radiation Tolerance/genetics
- Thymus Gland/pathology
- Transcription Factors/genetics
- Transcription Factors/immunology
- Transcription Factors/metabolism
- AIRE Protein
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Bachmayer N, Sohlberg E, Sundström Y, Rafik Hamad R, Berg L, Bremme K, Sverremark-Ekström E. ERRATUM: Women with Pre-Eclampsia have an Altered NKG2A and NKG2C Receptor Expression on Peripheral Blood Natural Killer Cells. Am J Reprod Immunol 2009. [DOI: 10.1111/j.1600-0897.2009.00752.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Bachmayer N, Sohlberg E, Sundström Y, Hamad RR, Berg L, Bremme K, Sverremark-Ekström E. ORIGINAL ARTICLE: Women with Pre-Eclampsia Have an Altered NKG2A and NKG2C Receptor Expression on Peripheral Blood Natural Killer Cells. Am J Reprod Immunol 2009; 62:147-57. [DOI: 10.1111/j.1600-0897.2009.00724.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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49
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Saghafian-Hedengren S, Sundström Y, Sohlberg E, Nilsson C, Linde A, Troye-Blomberg M, Berg L, Sverremark-Ekström E. Herpesvirus seropositivity in childhood associates with decreased monocyte-induced NK cell IFN-gamma production. THE JOURNAL OF IMMUNOLOGY 2009; 182:2511-7. [PMID: 19201907 DOI: 10.4049/jimmunol.0801699] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
EBV infection is inversely associated with IgE sensitization in children, and this association is further enhanced by CMV coinfection. In mice, herpesvirus latency causes systemic innate activation and protection from bacterial coinfection, implying the importance of herpesviruses in skewing immune responses during latent infection. Early control of viral infections depends on IFN-gamma release by NK cells, which generally requires the presence of accessory cells. We investigated IFN-gamma production by NK cells in PBMCs from children seropositive (SP) for EBV alone, for both EBV and CMV, or seronegative for both viruses. The ability of classical (CD14(++)CD16(-)) and proinflammatory (CD14(+)CD16(+)) monocytes to induce autologous NK cell IFN-gamma was studied by coculture experiments with enriched CD3(-)CD56(+) cells. Transwell experiments were used to evaluate how monocytes interact with NK cells to induce IFN-gamma synthesis. SP children had a significantly reduced proportion of IFN-gamma(+) NK cells and cognate intracellular IFN-gamma levels, which was more pronounced in CMV-coinfected subjects. Also, resting PBMCs of SP children displayed lower proportions of proinflammatory monocytes. IFN-gamma production by NK cells was dependent on interactions with monocytes, with the proinflammatory subset inducing the highest IFN-gamma. Finally, SP children had markedly lower levels of plasma IFN-gamma, concurrent with in vitro findings. Herpesvirus infections could be one contributing factor for maturation toward balanced Th1-Th2 responses. Our data indicate that early infection by herpesviruses may affect NK cell and monocyte interactions and thereby also influence the development of allergies.
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Schepis D, D'Amato M, Studahl M, Bergström T, Kärre K, Berg L. Herpes simplex virus infection downmodulates NKG2D ligand expression. Scand J Immunol 2009; 69:429-36. [PMID: 19508374 DOI: 10.1111/j.1365-3083.2009.02241.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herpes simplex virus (HSV) type 1 infection may cause orofacial infections in humans. The virus resides in a latent form in neural ganglia and occasionally reactivates and infects epithelial cells. Natural killer (NK) cells have been implicated in immune control of herpes virus infections, possibly by downmodulating major histocompatibility complex (MHC) class I and by other, as yet unidentified, mechanisms. Upon HSV-1 infection of cell lines, surface levels of NKG2D ligands MHC class I related proteins (MIC) A and UL16 binding protein 2 were downmodulated due to late viral gene product(s). As also MHC class I levels were reduced by HSV-1, NK cell recognition of HeLa cells was not affected by infection. Total cellular MICA contents remained unchanged, suggesting masking, internalization or intracellular retention of MICA as possible mechanisms of viral downregualtion of MICA surface levels. Furthermore, NK cells from patients with active HSV-1 infection had a tendency towards increased expression level of the activating receptor NKG2D. These data support a role for NKG2D-MICA interactions in immune responses to HSV-1 reactivation.
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