LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 67

Search options

  1. Article ; Online: Systemic Lupus Erythematosus-related Lung Disease.

    Bendstrup, Elisabeth / Lynn, Evelyn / Troldborg, Anne

    Seminars in respiratory and critical care medicine

    2024  

    Abstract: Systemic Lupus Erythematosus (SLE) is a multifaceted, multisystem autoimmune disorder with diverse clinical expressions. While prevalence reports vary widely, pulmonary involvement accounts for significant morbidity and mortality in SLE. This ... ...

    Abstract Systemic Lupus Erythematosus (SLE) is a multifaceted, multisystem autoimmune disorder with diverse clinical expressions. While prevalence reports vary widely, pulmonary involvement accounts for significant morbidity and mortality in SLE. This comprehensive review explores the spectrum of pulmonary disease in SLE, including upper airway manifestations (e.g., laryngeal affection), lower airway conditions (e.g., bronchitis, bronchiolitis, bronchiectasis), parenchymal diseases (e.g., interstitial lung disease, acute lupus pneumonitis, diffuse alveolar hemorrhage), pleural diseases (e.g., serositis, shrinking lung syndrome), and vascular diseases (e.g., pulmonary arterial hypertension, pulmonary embolism, acute reversible hypoxemia syndrome). We discuss diagnostic modalities, treatment strategies, and prognosis for each pulmonary manifestation. With diagnostics remaining a challenge and with the absence of standardized treatment guidelines, we emphasize the need for evidence-based guidelines to optimize patient care and improve outcomes in this complex disease.
    Language English
    Publishing date 2024-03-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1183617-9
    ISSN 1098-9048 ; 1069-3424
    ISSN (online) 1098-9048
    ISSN 1069-3424
    DOI 10.1055/s-0044-1782653
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Platelets and the Lectin Pathway of Complement Activation in Patients with Systemic Lupus Erythematosus or Antiphospholipid Syndrome.

    Vils, Signe Risbøl / Troldborg, Anne / Hvas, Anne-Mette / Thiel, Steffen

    TH open : companion journal to thrombosis and haemostasis

    2023  Volume 7, Issue 2, Page(s) e155–e167

    Abstract: ... ...

    Abstract Background
    Language English
    Publishing date 2023-06-15
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2901738-5
    ISSN 2512-9465 ; 2567-3459
    ISSN (online) 2512-9465
    ISSN 2567-3459
    DOI 10.1055/a-2087-0314
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Systemic Lupus Erythematosus-related Lung Disease

    Bendstrup, Elisabeth / Lynn, Evelyn / Troldborg, Anne

    Seminars in Respiratory and Critical Care Medicine

    (Pulmonary Complications of Connective Tissue Diseases)

    2024  

    Abstract: Systemic Lupus Erythematosus (SLE) is a multifaceted, multisystem autoimmune disorder with diverse clinical expressions. While prevalence reports vary widely, pulmonary involvement accounts for significant morbidity and mortality in SLE. This ... ...

    Series title Pulmonary Complications of Connective Tissue Diseases
    Abstract Systemic Lupus Erythematosus (SLE) is a multifaceted, multisystem autoimmune disorder with diverse clinical expressions. While prevalence reports vary widely, pulmonary involvement accounts for significant morbidity and mortality in SLE. This comprehensive review explores the spectrum of pulmonary disease in SLE, including upper airway manifestations (e.g., laryngeal affection), lower airway conditions (e.g., bronchitis, bronchiolitis, bronchiectasis), parenchymal diseases (e.g., interstitial lung disease, acute lupus pneumonitis, diffuse alveolar hemorrhage), pleural diseases (e.g., serositis, shrinking lung syndrome), and vascular diseases (e.g., pulmonary arterial hypertension, pulmonary embolism, acute reversible hypoxemia syndrome). We discuss diagnostic modalities, treatment strategies, and prognosis for each pulmonary manifestation. With diagnostics remaining a challenge and with the absence of standardized treatment guidelines, we emphasize the need for evidence-based guidelines to optimize patient care and improve outcomes in this complex disease.
    Keywords systemic lupus erythematosus ; acute lupus pneumonitis ; alveolar hemorrhage ; pleural effusion ; serositis ; shrinking lung syndrome ; interstitial lung disease ; pulmonary hypertension ; pulmonary embolism
    Language English
    Publishing date 2024-03-28
    Publisher Thieme Medical Publishers, Inc.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 1183617-9
    ISSN 1098-9048 ; 1069-3424
    ISSN (online) 1098-9048
    ISSN 1069-3424
    DOI 10.1055/s-0044-1782653
    Database Thieme publisher's database

    More links

    Kategorien

  4. Article ; Online: C3dg Quantification by PEG Precipitation and or TRIFMA.

    Troldborg, Anne / Jensenius, Jens Christian

    Methods in molecular biology (Clifton, N.J.)

    2021  Volume 2227, Page(s) 43–49

    Abstract: Detection of complement activation products can be carried out in a number of ways, and different methods are used in different laboratories. No international standard for measuring complement activation in the clinical setting has been agreed upon.Here ... ...

    Abstract Detection of complement activation products can be carried out in a number of ways, and different methods are used in different laboratories. No international standard for measuring complement activation in the clinical setting has been agreed upon.Here we describe a modified assay for measuring C3dg. The assay is simple, inexpensive and stable. The estimation of C3dg directly reflects complement turnover independently of activation pathway.
    MeSH term(s) Animals ; Biomarkers/analysis ; Biomarkers/blood ; Blood Protein Electrophoresis ; Chemical Precipitation ; Complement Activation/physiology ; Complement C3b/analysis ; Complement C3b/isolation & purification ; Enzyme-Linked Immunosorbent Assay/methods ; Fluorescent Antibody Technique/methods ; Fluoroimmunoassay/methods ; Humans ; Immunoelectrophoresis/methods ; Inflammation/blood ; Inflammation/diagnosis ; Inflammation Mediators/analysis ; Inflammation Mediators/blood ; Peptide Fragments/analysis ; Peptide Fragments/isolation & purification ; Polyethylene Glycols/chemistry ; Rabbits
    Chemical Substances Biomarkers ; Inflammation Mediators ; Peptide Fragments ; complement C3d,g ; Polyethylene Glycol 6000 (30IQX730WE) ; Polyethylene Glycols (3WJQ0SDW1A) ; Complement C3b (80295-43-8)
    Language English
    Publishing date 2021-04-13
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-1016-9_4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Inter-Alpha-Trypsin Inhibitor Heavy Chain 4 (ITIH4) as a Compensatory Protease Inhibitor in Hereditary Angioedema (HAE).

    Troldborg, Anne / Godnic-Polai, Zsofia / Cervenak, László / Hansen, Annette G / Farkas, Henriette / Thiel, Steffen

    The Journal of allergy and clinical immunology

    2024  

    Abstract: Background: Hereditary angioedema (HAE) is a genetic disorder that manifests as recurrent angioedema attacks, most frequently due to absent or reduced C1 inhibitor (C1-INH) activity. C1-INH is a crucial regulator of enzymatic cascades in the complement, ...

    Abstract Background: Hereditary angioedema (HAE) is a genetic disorder that manifests as recurrent angioedema attacks, most frequently due to absent or reduced C1 inhibitor (C1-INH) activity. C1-INH is a crucial regulator of enzymatic cascades in the complement, fibrinolytic, and contact systems. Inter-alpha-trypsin inhibitor heavy chain 4 (ITIH4) is an abundant plasma protease inhibitor that can inhibit enzymes in the proteolytic pathways associated with HAE. Nothing is known about its role in HAE.
    Objective: Investigate ITIH4 activation in HAE, establish it as a potential biomarker, and explore its involvement in HAE-associated proteolytic pathways.
    Methods: Specific immunoassays for non-cleaved ITIH4 (Intact ITIH4) and an assay detecting both intact and cleaved ITIH4 (Total ITIH4) were developed. We initially tested serum samples from HAE patients (n=20), ACEI-induced edema patients (ACEI) (n=20), and unknown HAE patients (U-HAE) (n=20). Validation involved an extended cohort of 80 HAE patients (60 type I, 20 type II), including samples taken at attack and quiescent disease periods, as well as 100 healthy controls.
    Results: In 63% of HAE patients, the Intact ITIH4 assay showed lower signals than the Total ITIH4 assay. This difference was not observed in ACEI and U-HAE patients. Western blotting confirmed cleaved ITIH4 in low-Intact ITIH4 samples. In serum samples lacking intact endogenous ITIH4, we observed immediate cleavage of added recombinant ITIH4 suggesting continuous enzymatic activity in the serum. Confirmatory HAE cohort analysis revealed significantly lower intact ITIH4 levels in both HAE type 1 and type 2 patients compared to controls, with consistently low Intact/Total ITIH4 ratios during clinical HAE attacks.
    Conclusion: The disease-specific low intact ITIH4 levels highlight its unique nature in HAE. The results suggest that ITIH4 may exhibit compensatory mechanisms in HAE, suggesting its utility as a diagnostic and prognostic biomarker. The variations during quiescent and active disease periods raise intriguing questions about the dynamics of proteolytic pathways in HAE.
    Language English
    Publishing date 2024-04-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2024.03.028
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Platelets and the Lectin Pathway of Complement Activation in Patients with Systemic Lupus Erythematosus or Antiphospholipid Syndrome

    Vils, Signe Risbøl / Troldborg, Anne / Hvas, Anne-Mette / Thiel, Steffen

    TH Open

    2023  Volume 07, Issue 02, Page(s) e155–e167

    Abstract: Background: Patients with systemic lupus erythematosus (SLE) have an increased risk of thrombosis even when they do not have antiphospholipid syndrome (APS). Interactions between complement activation and activated platelets have been suggested in SLE ... ...

    Abstract Background: Patients with systemic lupus erythematosus (SLE) have an increased risk of thrombosis even when they do not have antiphospholipid syndrome (APS). Interactions between complement activation and activated platelets have been suggested in SLE and APS and could play a role in the increased thrombosis risk.
    Objectives: To explore factors potentially related to the prothrombotic pathophysiology in patients with SLE, primary APS, and healthy controls, by investigating lectin pathway proteins (LPPs), complement activation, platelet aggregation, and platelet activation.
    Methods: This cross-sectional cohort study included 20 SLE patients, 17 primary APS, and 39 healthy controls. Flow cytometry and light transmission aggregometry were used to assess platelet activation and aggregation. Using time-resolved immunofluorometric assays, the plasma concentrations of 11 LPPs and C3dg, reflecting complement activation, were measured.
    Results: H-ficolin plasma concentrations were higher in SLE and APS patients than in controls ( p  = 0.01 and p  = 0.03). M-ficolin was lower in SLE than in APS ( p  = 0.01) and controls ( p  = 0.03). MAp19 was higher in APS patients than in SLE patients ( p  = 0.01) and controls ( p  < 0.001). In APS patients, MASP-2 and C3dg correlated negatively with platelet activation. Platelet-bound fibrinogen after agonist stimulation and C3dg concentrations correlated negatively with platelet activation.
    Conclusion: We observed significant differences between SLE and APS patients regarding complement proteins and platelet activation. Particularly the negative correlations between MASP-2 and C3dg with platelet activation only observed in APS patients suggest that interactions between complement activation and platelets differ in SLE and APS.
    Keywords platelets ; complement activation ; lectin ; systemic lupus erythematosus ; antiphospholipid syndrome
    Language English
    Publishing date 2023-04-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2901738-5
    ISSN 2512-9465 ; 2567-3459
    ISSN (online) 2512-9465
    ISSN 2567-3459
    DOI 10.1055/a-2087-0314
    Database Thieme publisher's database

    More links

    Kategorien

  7. Article ; Online: Differentiating between activation via the lectin or the classical complement pathway in patients with systemic lupus erythematosus.

    Larsen, Mads Lamm / Troldborg, Anne / Toonen, Erik J M / Hurler, Lisa / Prohaszka, Zoltan / Cervenak, László / Gudmann Hansen, Annette / Thiel, Steffen

    Clinical and experimental immunology

    2023  Volume 214, Issue 1, Page(s) 18–25

    Abstract: Complement activation is a hallmark of systemic lupus erythematosus (SLE) and can proceed through the classical (CP), lectin (LP), or alternative pathway (AP). When managing SLE patients, pathway-specific complement activation is rarely monitored as ... ...

    Abstract Complement activation is a hallmark of systemic lupus erythematosus (SLE) and can proceed through the classical (CP), lectin (LP), or alternative pathway (AP). When managing SLE patients, pathway-specific complement activation is rarely monitored as clinical assays are unavailable. In this study, we aim to differentiate between CP- or LP-mediated complement activation in SLE patients by quantifying pathway-specific protein complexes, namely C1s/C1-inhibitor (C1-INH) (CP-specific activation) and MASP-1/C1-INH (LP-specific activation). Levels for both complexes were assessed in 156 SLE patients and 50 controls using two newly developed ELISAs. We investigated whether pathway-specific complement activation was associated with disease activity and lupus nephritis (LN). Disease activity stratification was performed using SLEDAI scores assessed at inclusion. C1s/C1-INH concentrations were significantly increased in active SLE patients (SLEDAI ≥6) when compared with SLE patients with low disease activity (SLEDAI <6, P < 0.01) and correlated with SLEDAI score (r = .29, P < 0.01). In active LN, MASP-1/C1-INH plasma concentrations were significantly increased compared with nonactive LN (P = 0.02). No differences in MASP-1/C1-INH plasma concentrations were observed between active SLE patients and patients with low disease activity (P = 0.11) nor did we observe a significant correlation with disease activity (r = 0.12, P = 0.15). Our data suggest that the CP and the LP are activated in SLE. The CP is activated in active SLE disease, whereas activation of the LP might be more specific to disease manifestations like LN. Our results warrant further research into specific complement pathway activation in SLE patients to potentially improve specific-targeted and tailored-treatment approaches.
    MeSH term(s) Humans ; Complement Pathway, Classical ; Lectins ; Mannose-Binding Protein-Associated Serine Proteases/metabolism ; Lupus Erythematosus, Systemic ; Complement Activation ; Lupus Nephritis/diagnosis
    Chemical Substances Lectins ; Mannose-Binding Protein-Associated Serine Proteases (EC 3.4.21.-)
    Language English
    Publishing date 2023-07-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218531-3
    ISSN 1365-2249 ; 0009-9104 ; 0964-2536
    ISSN (online) 1365-2249
    ISSN 0009-9104 ; 0964-2536
    DOI 10.1093/cei/uxad070
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Complement Proteins L-Ficolin and M-Ficolin Are Increased in Patients With Axial Spondyloarthritis and Decrease After Tumor Necrosis Factor Inhibitor Treatment.

    Mistegaard, Clara Elbæk / Troldborg, Anne / Hansen, Annette / Thiel, Steffen / Jurik, Anne Grethe / Kiil, Rosa M / Christiansen, Alice A / Schiøttz-Christensen, Berit / Hendricks, Oliver / Pedersen, Susanne Juhl / Sørensen, Inge Juul / Østergaard, Mikkel / Loft, Anne Gitte

    The Journal of rheumatology

    2023  

    Abstract: Objective: We have previously reported elevated levels of the complement lectin pathway proteins L-ficolin and H-ficolin in patients with axial spondyloarthritis (axSpA) compared with healthy controls. The aim of the present study was to investigate ... ...

    Abstract Objective: We have previously reported elevated levels of the complement lectin pathway proteins L-ficolin and H-ficolin in patients with axial spondyloarthritis (axSpA) compared with healthy controls. The aim of the present study was to investigate these biomarkers in a cross-sectional cohort of patients suffering from low back pain (LBP). Further, we aimed to investigate changes in lectin pathway protein levels after initiation of adalimumab (ADA; a tumor necrosis factor inhibitor) in a longitudinal cohort of patients with axSpA.
    Methods: Lectin pathway protein levels (mannan-binding lectin [MBL], collectin liver 1, H-ficolin, L-ficolin, M-ficolin, MBL-associated serine protease [MASP]-1, MASP-2, MASP-3, MBL-associated protein 19 [MAp19], and MAp44) in EDTA plasma were determined in 2 well-characterized cohorts: (1) a clinical cross-sectional cohort of patients with LBP, including patients with axSpA (n = 23), patients with unspecific LBP (uLBP) with ≥ 1 SpA features (n = 55), and patients with uLBP without SpA features or magnetic resonance imaging findings suggestive of axSpA (n = 64); and (2) a randomized double-blinded, placebo-controlled trial cohort of patients with axSpA (n = 49) initiating ADA therapy. Lectin pathway protein levels were determined using immunoassays.
    Results: Plasma levels of L-ficolin and M-ficolin were significantly increased in the cross-sectional cohort of newly diagnosed patients with axSpA compared with clinically relevant controls with uLBP (all
    Conclusion: L-ficolin and M-ficolin levels are elevated in newly diagnosed patients with axSpA compared with clinically relevant controls. Both L-ficolin and M-ficolin levels decrease significantly after initiating ADA therapy. These findings provide new insights into the inflammatory processes in axSpA and support the involvement of complement in axSpA pathogenesis.
    Language English
    Publishing date 2023-09-15
    Publishing country Canada
    Document type Journal Article
    ZDB-ID 194928-7
    ISSN 1499-2752 ; 0315-162X
    ISSN (online) 1499-2752
    ISSN 0315-162X
    DOI 10.3899/jrheum.2023-0164
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: [Lack of clinical evidence for the use of hydroxychloroquine to treat SARS-CoV-2 infection].

    Troldborg, Anne / Bartels, Lars Erik / Deleuran, Bent

    Ugeskrift for laeger

    2019  Volume 182, Issue 20

    Abstract: The severity of COVID-19 disease has led to an urgent need for the discovery of new treatments. Thus, global stocks of hydroxychloroquine (HCQ) have been put under pressure with a study of 26 patients treated with HCQ during their infection with SARS-CoV- ...

    Abstract The severity of COVID-19 disease has led to an urgent need for the discovery of new treatments. Thus, global stocks of hydroxychloroquine (HCQ) have been put under pressure with a study of 26 patients treated with HCQ during their infection with SARS-CoV-2. Despite the study's lack of quality, several countries' medicines agencies subsequently issued guidelines for the use of HCQ for COVID-19. This review aims to elucidate potential mechanisms, which make HCQ treatment interesting in the fight against SARS-CoV-2 infection, as well as the current evidence for clinical use of HCQ to treat COVID-19.
    MeSH term(s) Antiviral Agents/pharmacology ; Antiviral Agents/therapeutic use ; Betacoronavirus ; Coronavirus Infections/drug therapy ; Humans ; Hydroxychloroquine/pharmacology ; Hydroxychloroquine/therapeutic use ; Pandemics ; Pneumonia, Viral/drug therapy
    Chemical Substances Antiviral Agents ; Hydroxychloroquine (4QWG6N8QKH)
    Keywords covid19
    Language Danish
    Publishing date 2019-09-04
    Publishing country Denmark
    Document type Journal Article ; Review
    ZDB-ID 124102-3
    ISSN 1603-6824 ; 0041-5782
    ISSN (online) 1603-6824
    ISSN 0041-5782
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: [Sjögren's syndrome].

    Jensen, Marie Louise Næstholt / Troldborg, Anne Margrethe / Pfeiffer-Jensen, Mogens / Deleuran, Bent

    Ugeskrift for laeger

    2021  Volume 183, Issue 31

    Abstract: Sjögren's syndrome (SS) is a common autoimmune disease with a prevalence of 1%. SS affects primarily women between the age of 30 and 50 years. The classic manifestations are sicca symptoms, musculoskeletal pain and fatigue but the disease can affect all ... ...

    Abstract Sjögren's syndrome (SS) is a common autoimmune disease with a prevalence of 1%. SS affects primarily women between the age of 30 and 50 years. The classic manifestations are sicca symptoms, musculoskeletal pain and fatigue but the disease can affect all organs. SS is associated with the antibody anti-SSA antibodies. The patients have a 15-20 times higher risk of lymphoma and an increased risk of spontaneous abortion and AV-block in life-born children. In this review, we share the diagnostic process and risk stratification and outline the treatments available from private practice.
    MeSH term(s) Adult ; Child ; Fatigue ; Female ; Humans ; Middle Aged ; Prevalence ; Sjogren's Syndrome/complications ; Sjogren's Syndrome/diagnosis ; Sjogren's Syndrome/drug therapy
    Language Danish
    Publishing date 2021-08-11
    Publishing country Denmark
    Document type Journal Article ; Review
    ZDB-ID 124102-3
    ISSN 1603-6824 ; 0041-5782
    ISSN (online) 1603-6824
    ISSN 0041-5782
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top