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  1. Article ; Online: HLA-G in Allergy: Does It Play an Immunoregulatory Role?

    Negrini, Simone / Contini, Paola / Murdaca, Giuseppe / Puppo, Francesco

    Frontiers in immunology

    2022  Volume 12, Page(s) 789684

    Abstract: Allergy is an inflammatory process determined by a cascade of immune events characterized by T-helper 2 lymphocytes polarization leading to interleukin-4 upregulation, IgE secretion, and mast cell and eosinophil activation. HLA-G molecules, both in ... ...

    Abstract Allergy is an inflammatory process determined by a cascade of immune events characterized by T-helper 2 lymphocytes polarization leading to interleukin-4 upregulation, IgE secretion, and mast cell and eosinophil activation. HLA-G molecules, both in membrane-bound and in soluble forms, are known to play a key immunoregulatory role and their involvement in allergic diseases is supported by increasing literature data. HLA-G expression and secretion is specifically induced in peripheral blood mononuclear cells of allergic patients after
    MeSH term(s) Animals ; HLA-G Antigens/immunology ; Humans ; Hypersensitivity/immunology
    Chemical Substances HLA-G Antigens
    Language English
    Publishing date 2022-01-10
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2021.789684
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Baseline urinary osteopontin levels are associated with the improvement of metabolic syndrome.

    Moriero, Margherita / Verzola, Daniela / Bertolotto, Maria / Minetti, Silvia / Contini, Paola / Ramoni, Davide / Liberale, Luca / Pontremoli, Roberto / Viazzi, Francesca / Pende, Aldo / Pisciotta, Livia / Montecucco, Fabrizio / Carbone, Federico

    Nutrition, metabolism, and cardiovascular diseases : NMCD

    2024  

    Abstract: Background and aims: While serum osteopontin (OPN)'s established role in cardiometabolic risk is recognized, its potential as a predictor of metabolic syndrome (MetS) improvement through a urine assay has not yet been demonstrated. In this study, we ... ...

    Abstract Background and aims: While serum osteopontin (OPN)'s established role in cardiometabolic risk is recognized, its potential as a predictor of metabolic syndrome (MetS) improvement through a urine assay has not yet been demonstrated. In this study, we propose its potential predictive role over a 12-month period of standard care, with the ability to complement anthropometric measures.
    Methods and results: Hierarchical clustering revealed a notable association of urinary OPN (uOPN) with MetS criteria and overcame anthropometric measures in predicting the improvement at 12 months (OR of 2.74 [95% CI 1.32 to 6.29]). uOPN significantly contributed to the homogeneity of the nodes in the random forest and ultimately enhanced the performance of anthropometric measures when assessed for accuracy and area under the curve (AUC).
    Conclusion: Our findings offer insights into potential applications in cardiometabolic medicine for uOPN, which is easily detectable in non-invasive biological samples through an affordable assay.
    Language English
    Publishing date 2024-03-29
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1067704-5
    ISSN 1590-3729 ; 0939-4753
    ISSN (online) 1590-3729
    ISSN 0939-4753
    DOI 10.1016/j.numecd.2024.03.028
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Osteopontin is associated with neutrophil extracellular trap formation in elderly patients with severe sepsis.

    Bertolotto, Maria / Verzola, Daniela / Contini, Paola / de Totero, Daniela / Tirandi, Amedeo / Ramoni, Davide / Ministrini, Stefano / Giacobbe, Daniele Roberto / Bonaventura, Aldo / Vecchié, Alessandra / Castellani, Luca / Mirabella, Michele / Arboscello, Eleonora / Liberale, Luca / Viazzi, Francesca / Bassetti, Matteo / Montecucco, Fabrizio / Carbone, Federico

    European journal of clinical investigation

    2024  Volume 54, Issue 4, Page(s) e14159

    MeSH term(s) Humans ; Aged ; Extracellular Traps ; Osteopontin ; Neutrophils ; Sepsis
    Chemical Substances Osteopontin (106441-73-0)
    Language English
    Publishing date 2024-01-24
    Publishing country England
    Document type Letter
    ZDB-ID 186196-7
    ISSN 1365-2362 ; 0014-2972 ; 0960-135X
    ISSN (online) 1365-2362
    ISSN 0014-2972 ; 0960-135X
    DOI 10.1111/eci.14159
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  4. Article ; Online: Among biomarkers of neutrophil activity, matrix metalloproteinases 8 independently predicts remission of metabolic syndrome

    Carbone, F. / Elia, Edoardo / Casula, Matteo / Bonaventura, Aldo / Bertolotto, Maria / Minetti, Silvia / Artom, Nathan / Camici, Giovanni G. / Contini, Paola / Pontremoli, Roberto / Viazzi, Francesca / Bertolini, Stefano / Pende, Aldo / Pisciotta, Livia / Montecucco, Fabrizio / Liberale, Luca

    The Italian Diabetes Society, the Italian Society for the Study of Atherosclerosis, the Italian Society of Human Nutrition and the Department of Clinical Medicine and Surgery, Federico II University Nutrition, Metabolism and Cardiovascular Diseases. 2023 Jan., v. 33, no. 1 p.185-193

    2023  

    Abstract: Inflammation due to the excess of nutrient intake plays an important role in the pathophysiology of metabolic syndrome (MetS). Here, the potential influence of neutrophils and their degranulation markers on MetS improvement upon dietary and behavioral ... ...

    Abstract Inflammation due to the excess of nutrient intake plays an important role in the pathophysiology of metabolic syndrome (MetS). Here, the potential influence of neutrophils and their degranulation markers on MetS improvement upon dietary and behavioral counselling, has been investigated. Specifically, we aimed at investigating their role as potential predictors of metabolic syndrome improvements. patients with MetS (n = 127) received behavioral and dietary recommendations before follow-up at 6 months. Serum levels of matrix metalloproteinases (MMP)8, MMP9, myeloperoxidase (MPO), tissue inhibitor of MMP (TIMP)-1, TIMP-2, TIMP-3 and resistin were tested at baseline. In the whole cohort, baseline levels of proinflammatory MMP8, MMP9 and MPO increased together with the number of MetS criteria. Seventy-three (57%) patients experienced a reduction in MetS-defining criteria at follow-up. With respect to those with no improvement, such individuals showed lower weight and waist circumference at enrolment, less frequent smoking habits, higher levels of triglycerides and lower circulating MMP8. At logistic regression analysis, baseline MMP8 showed negative predictive ability (odds ratio (OR) 0.979 [0.961–0.997]; p = 0.025) against MetS improvement. Such findings hold true even when included in the backward stepwise logistic regression model confirming MMP8 as an independent predictor (OR 0.970 [0.949–0.993]; p = 0.009). Receiver operating characteristic (ROC) curve confirmed the predictive ability of MMP8 combined in a model including baseline MetS criteria and waist circumference. Bootstrap resampling analysis internally validated our findings. Improvement of MetS is independently associated with baseline low MMP-8 levels, suggesting a pivotal role for inflammation in metabolic alteration.
    Keywords biomarkers ; blood serum ; inflammation ; metabolic syndrome ; metabolism ; metalloproteinases ; myeloperoxidase ; neutrophils ; nutrient intake ; odds ratio ; pathophysiology ; regression analysis ; remission ; resistin ; waist circumference ; Matrix-metalloproteinases ; Neutrophil
    Language English
    Dates of publication 2023-01
    Size p. 185-193.
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 1067704-5
    ISSN 0939-4753
    ISSN 0939-4753
    DOI 10.1016/j.numecd.2022.10.014
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Expression of membrane-bound human leucocyte antigen-G in systemic sclerosis and systemic lupus erythematosus.

    Negrini, Simone / Contini, Paola / Pupo, Francesca / Greco, Monica / Murdaca, Giuseppe / Puppo, Francesco

    Human immunology

    2019  Volume 81, Issue 4, Page(s) 162–167

    Abstract: Human leucocyte antigen-G (HLA-G) is a nonclassical class I major histocompatibility complex (MHC) molecule characterized by complex immunoregulatory and tolerogenic functions. Membrane-bound HLA-G is expressed on the surface of different cell ... ...

    Abstract Human leucocyte antigen-G (HLA-G) is a nonclassical class I major histocompatibility complex (MHC) molecule characterized by complex immunoregulatory and tolerogenic functions. Membrane-bound HLA-G is expressed on the surface of different cell populations in both physiological and pathological conditions. Systemic sclerosis (SSc) is a multisystem autoimmune disease characterized by widespread tissue fibrosis, vascular lesions and immunological alterations. Systemic lupus erythematosus is the prototypic systemic autoimmune disease affecting virtually any organ system, such as skin, joints, central nervous system, or kidneys. In SSc and SLE patients, the membrane expression of HLA-G on monocytes (0.88 ± 1.54 and 0.43 ± 0.75, respectively), CD4+ (0.42 ± 0.78 and 0.63 ± 0.48, respectively), CD8+ (2.65 ± 3.47 and 1.29 ± 1.34, respectively) and CD4+ CD8+ double-positive cells (13.87 ± 15.97 and 3.79 ± 3.11, respectively) was significantly higher than in healthy controls (0.12 ± 0.07; 0.01 ± 0.01; 0.14 ± 0.20 and 0.32 ± 0.38, respectively) (p < 0.0001). Our results show that in SSc and SLE the membrane expression of HLA-G by different subpopulations of peripheral blood mononuclear cells (PBMC) is increased, suggesting a potential role of HLA-G molecules in the complex immunological pathogenesis of these two autoimmune disorders.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Biomarkers/metabolism ; Female ; HLA-G Antigens/metabolism ; Humans ; Leukocytes, Mononuclear/metabolism ; Lupus Erythematosus, Systemic/blood ; Lupus Erythematosus, Systemic/immunology ; Male ; Middle Aged ; Monocytes/metabolism ; Scleroderma, Systemic/blood ; Scleroderma, Systemic/immunology ; T-Lymphocyte Subsets/metabolism
    Chemical Substances Biomarkers ; HLA-G Antigens
    Language English
    Publishing date 2019-12-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 801524-7
    ISSN 1879-1166 ; 0198-8859
    ISSN (online) 1879-1166
    ISSN 0198-8859
    DOI 10.1016/j.humimm.2019.12.004
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  6. Article: Sulfavant A as the first synthetic TREM2 ligand discloses a homeostatic response of dendritic cells after receptor engagement

    Gallo, Carmela / Manzo, Emiliano / Barra, Giusi / Fioretto, Laura / Ziaco, Marcello / Nuzzo, Genoveffa / d’Ippolito, Giuliana / Ferrera, Francesca / Contini, Paola / Castiglia, Daniela / Angelini, Claudia / De Palma, Raffaele / Fontana, Angelo

    Cellular and molecular life sciences. 2022 July, v. 79, no. 7

    2022  

    Abstract: OBJECTIVE: The immune response arises from a fine balance of mechanisms that provide for surveillance, tolerance, and elimination of dangers. Sulfavant A (SULF A) is a sulfolipid with a promising adjuvant activity. Here we studied the mechanism of action ...

    Abstract OBJECTIVE: The immune response arises from a fine balance of mechanisms that provide for surveillance, tolerance, and elimination of dangers. Sulfavant A (SULF A) is a sulfolipid with a promising adjuvant activity. Here we studied the mechanism of action of SULF A and addressed the identification of its molecular target in human dendritic cells (hDCs). METHODS: Adjuvant effect and immunological response to SULF A were assessed on DCs derived from human donors. In addition to testing various reporter cells, target identification and downstream signalling was supported by a reverse pharmacology approach based on antibody blocking and gene silencing, crosstalk with TLR pathways, use of human allogeneic mixed lymphocyte reaction. RESULTS: SULF A binds to the Triggering Receptor Expressed on Myeloid cells-2 (TREM2) and initiates an unconventional maturation of hDCs leading to enhanced migration activity and up-regulation of MHC and co-stimulatory molecules without release of conventional cytokines. This response involves the SYK-NFAT axis and is compromised by blockade or gene silencing of TREM2. Activation by SULF A preserved the DC functions to excite the allogeneic T cell response, and increased interleukin-10 release after lipopolysaccharide stimulation. CONCLUSION: SULF A is the first synthetic small molecule that binds to TREM2. The receptor engagement drives differentiation of an unprecedented DC phenotype (homeDCs) that contributes to immune homeostasis without compromising lymphocyte activation and immunogenic response. This mechanism fully supports the adjuvant and immunoregulatory activity of SULF A. We also propose that the biological properties of SULF A can be of interest in various physiopathological mechanisms and therapies involving TREM2.
    Keywords T-lymphocytes ; adjuvants ; antibodies ; genes ; homeostasis ; humans ; immune response ; immunomodulation ; interleukin-10 ; ligands ; lipopolysaccharides ; lymphocyte proliferation ; mechanism of action ; monitoring ; pharmacology ; phenotype
    Language English
    Dates of publication 2022-07
    Size p. 369.
    Publishing place Springer International Publishing
    Document type Article
    ZDB-ID 1358415-7
    ISSN 1420-9071 ; 1420-682X
    ISSN (online) 1420-9071
    ISSN 1420-682X
    DOI 10.1007/s00018-022-04297-z
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Selection for immune evasion in SARS-CoV-2 revealed by high-resolution epitope mapping and sequence analysis.

    N'Guessan, Arnaud / Kailasam, Senthilkumar / Mostefai, Fatima / Poujol, Raphaël / Grenier, Jean-Christophe / Ismailova, Nailya / Contini, Paola / De Palma, Raffaele / Haber, Carsten / Stadler, Volker / Bourque, Guillaume / Hussin, Julie G / Shapiro, B Jesse / Fritz, Jörg H / Piccirillo, Ciriaco A

    iScience

    2023  Volume 26, Issue 8, Page(s) 107394

    Abstract: Here, we exploit a deep serological profiling strategy coupled with an integrated, computational framework for the analysis of SARS-CoV-2 humoral immune responses. Applying a high-density peptide array (HDPA) spanning the entire proteomes of SARS-CoV-2 ... ...

    Abstract Here, we exploit a deep serological profiling strategy coupled with an integrated, computational framework for the analysis of SARS-CoV-2 humoral immune responses. Applying a high-density peptide array (HDPA) spanning the entire proteomes of SARS-CoV-2 and endemic human coronaviruses allowed identification of B cell epitopes and relate them to their evolutionary and structural properties. We identify hotspots of pre-existing immunity and identify cross-reactive epitopes that contribute to increasing the overall humoral immune response to SARS-CoV-2. Using a public dataset of over 38,000 viral genomes from the early phase of the pandemic, capturing both inter- and within-host genetic viral diversity, we determined the evolutionary profile of epitopes and the differences across proteins, waves, and SARS-CoV-2 variants. Lastly, we show that mutations in spike and nucleocapsid epitopes are under stronger selection between than within patients, suggesting that most of the selective pressure for immune evasion occurs upon transmission between hosts.
    Language English
    Publishing date 2023-07-13
    Publishing country United States
    Document type Journal Article
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2023.107394
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  8. Article ; Online: Sulfavant A as the first synthetic TREM2 ligand discloses a homeostatic response of dendritic cells after receptor engagement.

    Gallo, Carmela / Manzo, Emiliano / Barra, Giusi / Fioretto, Laura / Ziaco, Marcello / Nuzzo, Genoveffa / d'Ippolito, Giuliana / Ferrera, Francesca / Contini, Paola / Castiglia, Daniela / Angelini, Claudia / De Palma, Raffaele / Fontana, Angelo

    Cellular and molecular life sciences : CMLS

    2022  Volume 79, Issue 7, Page(s) 369

    Abstract: Objective: The immune response arises from a fine balance of mechanisms that provide for surveillance, tolerance, and elimination of dangers. Sulfavant A (SULF A) is a sulfolipid with a promising adjuvant activity. Here we studied the mechanism of ... ...

    Abstract Objective: The immune response arises from a fine balance of mechanisms that provide for surveillance, tolerance, and elimination of dangers. Sulfavant A (SULF A) is a sulfolipid with a promising adjuvant activity. Here we studied the mechanism of action of SULF A and addressed the identification of its molecular target in human dendritic cells (hDCs).
    Methods: Adjuvant effect and immunological response to SULF A were assessed on DCs derived from human donors. In addition to testing various reporter cells, target identification and downstream signalling was supported by a reverse pharmacology approach based on antibody blocking and gene silencing, crosstalk with TLR pathways, use of human allogeneic mixed lymphocyte reaction.
    Results: SULF A binds to the Triggering Receptor Expressed on Myeloid cells-2 (TREM2) and initiates an unconventional maturation of hDCs leading to enhanced migration activity and up-regulation of MHC and co-stimulatory molecules without release of conventional cytokines. This response involves the SYK-NFAT axis and is compromised by blockade or gene silencing of TREM2. Activation by SULF A preserved the DC functions to excite the allogeneic T cell response, and increased interleukin-10 release after lipopolysaccharide stimulation.
    Conclusion: SULF A is the first synthetic small molecule that binds to TREM2. The receptor engagement drives differentiation of an unprecedented DC phenotype (homeDCs) that contributes to immune homeostasis without compromising lymphocyte activation and immunogenic response. This mechanism fully supports the adjuvant and immunoregulatory activity of SULF A. We also propose that the biological properties of SULF A can be of interest in various physiopathological mechanisms and therapies involving TREM2.
    MeSH term(s) Cytokines/metabolism ; Dendritic Cells/metabolism ; Homeostasis ; Ligands ; Lymphocyte Activation
    Chemical Substances Cytokines ; Ligands
    Language English
    Publishing date 2022-06-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1358415-7
    ISSN 1420-9071 ; 1420-682X
    ISSN (online) 1420-9071
    ISSN 1420-682X
    DOI 10.1007/s00018-022-04297-z
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  9. Article ; Online: Immunoregulatory Role of HLA-G in Allergic Diseases.

    Murdaca, Giuseppe / Contini, Paola / Negrini, Simone / Ciprandi, Giorgio / Puppo, Francesco

    Journal of immunology research

    2016  Volume 2016, Page(s) 6865758

    Abstract: Allergic diseases are sustained by a T-helper 2 polarization leading to interleukin-4 secretion, IgE-dependent inflammation, and mast cell and eosinophil activation. HLA-G molecules, both in membrane-bound and in soluble forms, play a central role in ... ...

    Abstract Allergic diseases are sustained by a T-helper 2 polarization leading to interleukin-4 secretion, IgE-dependent inflammation, and mast cell and eosinophil activation. HLA-G molecules, both in membrane-bound and in soluble forms, play a central role in modulation of immune responses. Elevated levels of soluble HLA-G (sHLA-G) molecules are detected in serum of patients with allergic rhinitis to seasonal and perennial allergens and correlate with allergen-specific IgE levels, clinical severity, drug consumption, and response to allergen-specific immunotherapy. sHLA-G molecules are also found in airway epithelium of patients with allergic asthma and high levels of sHLA-G molecules are detectable in plasma and bronchoalveolar lavage of asthmatic patients correlating with allergen-specific IgE levels. Finally, HLA-G molecules are expressed by T cells, monocytes-macrophages, and Langerhans cells infiltrating the dermis of atopic dermatitis patients. Collectively, although at present it is difficult to completely define the role of HLA-G molecules in allergic diseases, it may be suggested that they are expressed and secreted by immune cells during the allergic reaction in an attempt to suppress allergic inflammation.
    MeSH term(s) Alleles ; Allergens/immunology ; Asthma/genetics ; Asthma/immunology ; Asthma/metabolism ; Asthma/therapy ; Dermatitis, Atopic/genetics ; Dermatitis, Atopic/immunology ; Dermatitis, Atopic/metabolism ; Dermatitis, Atopic/therapy ; Female ; HLA-G Antigens/chemistry ; HLA-G Antigens/genetics ; HLA-G Antigens/immunology ; Humans ; Hypersensitivity/genetics ; Hypersensitivity/immunology ; Hypersensitivity/metabolism ; Hypersensitivity/therapy ; Immunomodulation ; Pregnancy ; Protein Isoforms ; Rhinitis, Allergic/genetics ; Rhinitis, Allergic/immunology ; Rhinitis, Allergic/metabolism ; Rhinitis, Allergic/therapy
    Chemical Substances Allergens ; HLA-G Antigens ; Protein Isoforms
    Language English
    Publishing date 2016
    Publishing country Egypt
    Document type Journal Article ; Review
    ZDB-ID 2817541-4
    ISSN 2314-7156 ; 2314-8861
    ISSN (online) 2314-7156
    ISSN 2314-8861
    DOI 10.1155/2016/6865758
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  10. Article: Lipoprotein(a) Modulates Carotid Atherosclerosis in Metabolic Syndrome.

    Cremonini, Anna Laura / Pasta, Andrea / Carbone, Federico / Visconti, Luca / Casula, Matteo / Elia, Edoardo / Bonaventura, Aldo / Liberale, Luca / Bertolotto, Maria / Artom, Nathan / Minetti, Silvia / Contini, Paola / Verzola, Daniela / Pontremoli, Roberto / Viazzi, Francesca / Viviani, Giorgio Luciano / Bertolini, Stefano / Pende, Aldo / Montecucco, Fabrizio /
    Pisciotta, Livia

    Frontiers in molecular biosciences

    2022  Volume 9, Page(s) 854624

    Abstract: Background and Aim: ...

    Abstract Background and Aim:
    Language English
    Publishing date 2022-06-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2814330-9
    ISSN 2296-889X
    ISSN 2296-889X
    DOI 10.3389/fmolb.2022.854624
    Database MEDical Literature Analysis and Retrieval System OnLINE

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