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Tuft cell IL-17RB restrains IL-25 bioavailability and reveals context-dependent ILC2 hypoproliferation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.04.583299. [PMID: 38496438 PMCID: PMC10942319 DOI: 10.1101/2024.03.04.583299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
The tuft cell-ILC2 circuit orchestrates rapid type 2 responses upon detecting microbe-derived succinate and luminal helminths. Our findings delineate key mechanistic steps, involving IP3R2 engagement and Ca 2+ flux, governing IL-25 production by tuft cells triggered by succinate detection. While IL-17RB plays a pivotal intrinsic role in ILC2 activation, it exerts a regulatory function in tuft cells. Tuft cells exhibit constitutive Il25 expression, placing them in an anticipatory state that facilitates rapid production of IL-25 protein for ILC2 activation. Tuft cell IL-17RB is crucial for restraining IL-25 bioavailability, preventing excessive tonic ILC2 stimulation due to basal Il25 expression. Suboptimal ILC2 stimulation by IL-25 resulting from tuft cell Il17rb -deficiency or prolonged succinate exposure induces a state of hypoproliferation in ILC2s, also observed in chronic helminth infection. Our study offers critical insights into the regulatory dynamics of IL-25 in this circuit, highlighting the delicate tuning required for responses to diverse luminal states.
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Impacts of metal mining on river systems: a global assessment. Science 2023; 381:1345-1350. [PMID: 37733841 DOI: 10.1126/science.adg6704] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 08/18/2023] [Indexed: 09/23/2023]
Abstract
An estimated 23 million people live on floodplains affected by potentially dangerous concentrations of toxic waste derived from past and present metal mining activity. We analyzed the global dimensions of this hazard, particularly in regard to lead, zinc, copper, and arsenic, using a georeferenced global database detailing all known metal mining sites and intact and failed tailings storage facilities. We then used process-based and empirically tested modeling to produce a global assessment of metal mining contamination in river systems and the numbers of human populations and livestock exposed. Worldwide, metal mines affect 479,200 kilometers of river channels and 164,000 square kilometers of floodplains. The number of people exposed to contamination sourced from long-term discharge of mining waste into rivers is almost 50 times greater than the number directly affected by tailings dam failures.
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3
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Vision to cure lung disease in STAT3-Hyper IgE
syndrome. KLINISCHE PADIATRIE 2022. [DOI: 10.1055/s-0042-1754495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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4
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Mild COVID-19 imprints a long-term inflammatory eicosanoid- and chemokine memory in monocyte-derived macrophages. Mucosal Immunol 2022; 15:515-524. [PMID: 35288643 PMCID: PMC9038526 DOI: 10.1038/s41385-021-00482-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 02/08/2023]
Abstract
Monocyte-derived macrophages (MDM) drive the inflammatory response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and they are a major source of eicosanoids in airway inflammation. Here we report that MDM from SARS-CoV-2-infected individuals with mild disease show an inflammatory transcriptional and metabolic imprint that lasts for at least 5 months after SARS-CoV-2 infection. MDM from convalescent SARS-CoV-2-infected individuals showed a downregulation of pro-resolving factors and an increased production of pro-inflammatory eicosanoids, particularly 5-lipoxygenase-derived leukotrienes. Leukotriene synthesis was further enhanced by glucocorticoids and remained elevated at 3–5 months, but had returned to baseline at 12 months post SARS-CoV-2 infection. Stimulation with SARS-CoV-2 spike protein or LPS triggered exaggerated prostanoid-, type I IFN-, and chemokine responses in post COVID-19 MDM. Thus, SARS-CoV-2 infection leaves an inflammatory imprint in the monocyte/ macrophage compartment that drives aberrant macrophage effector functions and eicosanoid metabolism, resulting in long-term immune aberrations in patients recovering from mild COVID-19.
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5
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Macrophages acquire a TNF-dependent inflammatory memory in allergic asthma. J Allergy Clin Immunol 2021; 149:2078-2090. [PMID: 34974067 DOI: 10.1016/j.jaci.2021.11.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 10/18/2021] [Accepted: 11/26/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND Infectious agents can reprogram or "train" macrophages and their progenitors to respond more readily to subsequent insults. However, whether such an inflammatory memory exists in type-2 inflammatory conditions such as allergic asthma was not known. OBJECTIVE To decipher macrophage trained immunity in allergic asthma. METHODS We used a combination of clinical sampling of house dust mite (HDM)-allergic patients, HDM-induced allergic airway inflammation (AAI) in mice and an in vitro training set-up to analyze persistent changes in macrophage eicosanoid-, cytokine- and chemokine production as well as underlying metabolic and epigenetic mechanisms. Transcriptional and metabolic profiles of patient-derived and in vitro trained macrophages were assessed by RNA sequencing or Seahorse and LC-MS/MS analysis, respectively. RESULTS We found that macrophages differentiated from bone marrow- or blood monocyte- progenitors of HDM-allergic mice or asthma patients show inflammatory transcriptional reprogramming and excessive mediator (TNF-α, CCL17, leukotriene, PGE2, IL-6) responses upon stimulation. Macrophages from HDM-allergic mice initially exhibited a type-2 imprint, which shifted towards a classical inflammatory training over time. HDM-induced AAI elicited a metabolically activated macrophage phenotype, producing high amounts of 2-hydroxyglutarate (2-HG). HDM-induced macrophage training in vitro was mediated by a formyl-peptide receptor 2 (FPR2)-TNF-2-HG-PGE2/EP2-axis, resulting in an M2-like macrophage phenotype with high CCL17 production. TNF blockade by etanercept or genetic ablation of Tnf in myeloid cells prevented the inflammatory imprinting of bone marrow-derived macrophages from HDM-allergic mice. CONCLUSION Allergen-triggered inflammation drives a TNF-dependent innate memory, which may perpetuate and exacerbate chronic type-2 airway inflammation and thus represents a target for asthma therapy.
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Macrophage regulation & function in helminth infection. Semin Immunol 2021; 53:101526. [PMID: 34802871 DOI: 10.1016/j.smim.2021.101526] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 11/03/2021] [Accepted: 11/06/2021] [Indexed: 12/14/2022]
Abstract
Macrophages are innate immune cells with essential roles in host defense, inflammation, immune regulation and repair. During infection with multicellular helminth parasites, macrophages contribute to pathogen trapping and killing as well as to tissue repair and the resolution of type 2 inflammation. Macrophages produce a broad repertoire of effector molecules, including enzymes, cytokines, chemokines and growth factors that govern anti-helminth immunity and repair of parasite-induced tissue damage. Helminth infection and the associated type 2 immune response induces an alternatively activated macrophage (AAM) phenotype that - beyond driving host defense - prevents aberrant Th2 cell activation and type 2 immunopathology. The immune regulatory potential of macrophages is exploited by helminth parasites that induce the production of anti-inflammatory mediators such as interleukin 10 or prostaglandin E2 to evade host immunity. Here, we summarize current insights into the mechanisms of macrophage-mediated host defense and repair during helminth infection and highlight recent progress on the immune regulatory crosstalk between macrophages and helminth parasites. We also point out important remaining questions such as the translation of findings from murine models to human settings of helminth infection as well as long-term consequences of helminth-induced macrophage reprogramming for subsequent host immunity.
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An anti-inflammatory eicosanoid switch mediates the suppression of type-2 inflammation by helminth larval products. Sci Transl Med 2021; 12:12/540/eaay0605. [PMID: 32321863 DOI: 10.1126/scitranslmed.aay0605] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 11/28/2019] [Accepted: 03/10/2020] [Indexed: 12/13/2022]
Abstract
Eicosanoids are key mediators of type-2 inflammation, e.g., in allergy and asthma. Helminth products have been suggested as remedies against inflammatory diseases, but their effects on eicosanoids are unknown. Here, we show that larval products of the helminth Heligmosomoides polygyrus bakeri (HpbE), known to modulate type-2 responses, trigger a broad anti-inflammatory eicosanoid shift by suppressing the 5-lipoxygenase pathway, but inducing the cyclooxygenase (COX) pathway. In human macrophages and granulocytes, the HpbE-driven induction of the COX pathway resulted in the production of anti-inflammatory mediators [e.g., prostaglandin E2 (PGE2) and IL-10] and suppressed chemotaxis. HpbE also abrogated the chemotaxis of granulocytes from patients suffering from aspirin-exacerbated respiratory disease (AERD), a severe type-2 inflammatory condition. Intranasal treatment with HpbE extract attenuated allergic airway inflammation in mice, and intranasal transfer of HpbE-conditioned macrophages led to reduced airway eosinophilia in a COX/PGE2-dependent fashion. The induction of regulatory mediators in macrophages depended on p38 mitogen-activated protein kinase (MAPK), hypoxia-inducible factor-1α (HIF-1α), and Hpb glutamate dehydrogenase (GDH), which we identify as a major immunoregulatory protein in HpbE Hpb GDH activity was required for anti-inflammatory effects of HpbE in macrophages, and local administration of recombinant Hpb GDH to the airways abrogated allergic airway inflammation in mice. Thus, a metabolic enzyme present in helminth larvae can suppress type-2 inflammation by inducing an anti-inflammatory eicosanoid switch, which has important implications for the therapy of allergy and asthma.
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Outcomes for Pressure Ulcer Trials (OUTPUTs) project: review and classification of outcomes reported in pressure ulcer prevention research. Br J Dermatol 2020; 184:617-626. [DOI: 10.1111/bjd.19304] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2020] [Indexed: 12/13/2022]
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9
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The effectiveness of two silicone dressings for sacral and heel pressure ulcer prevention compared with no dressings in high‐risk intensive care unit patients: a randomized controlled parallel‐group trial. Br J Dermatol 2019; 183:256-264. [DOI: 10.1111/bjd.18621] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2019] [Indexed: 02/07/2023]
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10
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A brain–computer interface based stroke rehabilitation system, controlling an avatar and functional electrical stimulation, to improve motor functions. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Serum and plasma amino acids as markers of prediabetes, insulin resistance, and incident diabetes. Crit Rev Clin Lab Sci 2017; 55:21-32. [PMID: 29239245 DOI: 10.1080/10408363.2017.1414143] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Presently, routine screening misses many cases of prediabetes and early type 2 diabetes (T2D). Therefore, better biomarkers are needed for a simple and early detection of abnormalities of glucose metabolism and prediction of future T2D. Possible candidates for this include plasma or serum amino acids because glucose and amino acid metabolism are closely connected. This review presents the available evidence of this connectivity and discusses its clinical implications. First, we examine the underlying physiological, pre-analytical, and analytical issues. Then, we summarize results of human studies that evaluate amino acid levels as markers for insulin resistance, prediabetes, and future incident T2D. Finally, we illustrate the interconnection of amino acid levels and metabolic syndrome with our own data from a deeply phenotyped human cohort. We also discuss how amino acids may contribute to the pathophysiology of T2D. We conclude that elevated branched-chain amino acids and reduced glycine are currently the most robust and consistent amino acid markers for prediabetes, insulin resistance, and future T2D. Yet, we are cautious regarding the clinical potential even of these parameters because their discriminatory power is insufficient and their levels depend not only on glycemia, but also on other components of the metabolic syndrome. The identification of more precise intermediates of amino acid metabolism or combinations with other biomarkers will, therefore, be necessary to obtain in order to develop laboratory tests that can improve T2D screening.
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Insulin secretory defect in familial partial lipodystrophy Type 2 and successful long-term treatment with a glucagon-like peptide 1 receptor agonist. Diabet Med 2017; 34:1792-1794. [PMID: 29044799 DOI: 10.1111/dme.13527] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/12/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Familial partial lipodystrophies are rare monogenic disorders that are often associated with diabetes. In such cases, it can be difficult to achieve glycaemic control. CASE REPORT We report a 34-year old woman with familial partial lipodystrophy type 2 (Dunnigan) and diabetes; her hyperglycaemia persisted despite metformin treatment. A combined intravenous glucose tolerance-euglycaemic clamp test showed severe insulin resistance, as expected, but also showed strongly diminished first-phase insulin secretion. After the latter finding, we added the glucagon-like peptide-1 receptor agonist liraglutide to the patient's treatment regimen, which rapidly normalized plasma glucose levels. HbA1c values <42 mmol/mol (6.0%) have now been maintained for over 4 years. CONCLUSION This case suggests that a glucagon-like peptide-1 receptor agonist may be a useful component of glucose-lowering therapy in individuals with familial partial lipodystrophy and diabetes mellitus.
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The relevance of the lymph node ratio as predictor of prognosis is higher in HPV-negative than in HPV-positive oropharyngeal squamous cell carcinoma. Clin Otolaryngol 2017; 43:192-198. [DOI: 10.1111/coa.12938] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2017] [Indexed: 01/03/2023]
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Physical fitness and plasma leptin in women with recent gestational diabetes. PLoS One 2017; 12:e0179128. [PMID: 28609470 PMCID: PMC5469459 DOI: 10.1371/journal.pone.0179128] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 05/24/2017] [Indexed: 12/15/2022] Open
Abstract
Aims/Hypothesis Low physical fitness (PF) is a risk factor for type 2 diabetes mellitus (T2D). Women with a history of gestational diabetes (GDM) are at risk for T2D at a young age, but the role of PF in this population is not clear. PF has also been found to correlate inversely with plasma leptin in previous studies. Here, we examine whether women who had GDM have lower PF than women after a normoglycemic pregnancy and, second, whether PF is associated with plasma leptin, independently of body fat mass. Methods Cross-sectional analysis of 236 participants in the PPSDiab Study (cohort study of women 3–16 months after delivery, 152 after gestational diabetes (pGDM), 84 after normoglycemic pregnancy (control subjects); consecutively recruited 2011–16); medical history, physical examination with bioelectrical impedance analysis (BIA), whole body magnetic resonance imaging (MRI) (n = 154), 5-point oral glucose tolerance test, cardiopulmonary exercise testing, clinical chemistry including fasting plasma leptin; statistical analysis with Mann–Whitney U and t -test, Spearman correlation coefficient, multiple linear regression. Results Women pGDM had lower maximally achieved oxygen uptake (VO2peak/kg: 25.7(21.3–29.9) vs. 30.0(26.6–34.1)ml/min/kg; total VO2peak: 1733(1552–2005) vs. 1970(1767–2238)ml/min; p<0.0001 for both), and maximum workload (122.5(105.5–136.5) vs. 141.0(128.5–159.5)W; p<0.0001). Fasting plasma leptin correlated inversely with PF (VO2peak/kg ρ = -0.72 p<0.0001; VO2peak ρ = -0.16 p = 0.015; max. load ρ = -0.35 p<0.0001). These associations remained significant with adjustment for body mass index, or for body fat mass (BIA and MRI). Conclusions/Interpretation Women with a recent history of GDM were less fit than control subjects. Low PF may therefore contribute to the risk for T2D after GDM. This should be tested in intervention studies. Low PF also associated with increased leptin levels–independently of body fat. PF may therefore influence leptin levels and signaling. This hypothesis requires further investigation.
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Niedriges Adiponectin bei adipösen, nicht aber bei normalgewichtigen Frauen nach Gestationsdiabetes. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601623] [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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Wellness, wellbeing and food choice clinical practice tool – A way forward for patient-centred weight loss practice. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2016. [DOI: 10.1016/j.jnim.2015.12.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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17
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DiabApp – eine personalisierte Lebensstilintervention zur Prävention von Typ-2-Diabetes nach GDM. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Plasmaleptin und körperliche Fitness bei jungen Frauen mit und ohne erhöhtem Risiko für T2D. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hohe Fetuin-A-Werte korrelieren mit geringer körperlicher Fitness und niedrigerer Insulinempfindlichkeit bei Frauen nach Gestationsdiabetes. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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CP-058 Identification of key areas for antimicrobial stewardship strategies in a large university teaching hospital: A point prevalence study. Eur J Hosp Pharm 2016. [DOI: 10.1136/ejhpharm-2016-000875.58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Zum 80. Geburtstag von Univ. Prof. Dr. Hans Tilscher. MANUELLE MEDIZIN 2015. [DOI: 10.1007/s00337-015-0048-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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P8 Tumor-associated B cells in head and neck squamous cell carcinoma (HNSCC). Oral Oncol 2015. [DOI: 10.1016/j.oraloncology.2015.02.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
In Germany approximately 7.2% of the population currently suffer from diabetes mellitus. A further increase in the prevalence is expected in the coming years. Many therapy options, sometimes even without a risk of hypoglycemia, are now available. The foundations of a sufficient therapy of type 2 diabetes are, however, still lifestyle measures, such as weight reduction, optimized nutrition and increased physical activity. Optimization of cardiac and cerebrovascular risk factors is also an essential component of management of diabetes in order to reduce or even avoid secondary complications.
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[Optimising pain therapy for neurological inpatients]. FORTSCHRITTE DER NEUROLOGIE-PSYCHIATRIE 2015; 83:149-56. [PMID: 25794320 DOI: 10.1055/s-0034-1399111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND The Department of Neurology at the Medical University Graz has implemented a multiprofessional pain management concept and evaluated the outcome by means of a patient survey. METHODS Standard operating procedures for standardised pain measurement, documentation and therapy were developed. All engaged professional participants were trained before implementation. RESULTS 88.7 % of the surveyed 63 patients reported pain during the hospitalisation. During the night and in the morning, the occurrence of severe pain was most likely. The position or activity most likely triggering severe pain was mobilisation (19 %). Patients with degenerative diseases of the spine without radiculopathy reported the highest levels of pain. CONCLUSIONS Pain is an important problem for neurological inpatients. Nocturnal pain, pain induced by mobilisation, and pain therapy for patients with degenerative diseases of the spine without radiculopathy require particular attention.
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Insulin resistance in women after pregnancy is associated with changes in the serum nonesterified fatty acid profile. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schlafqualität und Glukosemetabolismus. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Erniedrigte körperliche Leistungsfähigkeit bei Frauen nach Gestationsdiabetes. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1375085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Modifizierte mDixon Sequenzen im Vergleich mit H1-Spektroskopien zur Quantifizierung des Leberfettgehalts bei Patientinnen mit Gestationsdiabetes. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Plasma MR-proANP levels are associated with carotid intima-media thickness in the general community: The KORA F4 study. Atherosclerosis 2013; 230:235-41. [DOI: 10.1016/j.atherosclerosis.2013.07.047] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 07/25/2013] [Accepted: 07/25/2013] [Indexed: 01/01/2023]
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Abstract
Type 1a diabetes develops from a chronic autoimmune process leading to absolute insulin deficiency and proneness to ketosis. Prospective studies have clearly shown that intensive insulin therapy (ICT) results in improved quality of life and reduced development of diabetes-associated microvascular and macrovascular complications. The gold standard of therapy in type 1 diabetes is insulin injection with a basal bolus insulin regimen, in which patient daily routine and wishes are considered. The treatment goals should be determined on an individualized basis together with the patient. An HbA(1c) value < 7.0% is considered to be well controlled while values ≤ 6.5% indicate an excellent blood glucose control, as long as there are no episodes of severe hypoglycemia. As many adult patients with type 1 diabetes develop additional cardiovascular risk factors dyslipidemia and hypertension should also be considered and treated according to current treatment guidelines. A multimodal treatment may be the best way to preserve quality of life in patients with type 1 diabetes.
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Erste Ergebnisse der PPS-Diab (Prädiktion, Prävention und Subklassifikation von Typ-2-Diabetes mellitus)-Studie: Phänotypische Charakterisierung von Frauen nach Gestationsdiabetes- Ansätze für Prävention? DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Passives Echtzeit-Mapping des eloquenten Kortex mit intrakraniellen EEG. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Schlaganfallrehabilitation mittels Brain-Computer Interface. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Bewusstseinsdetektion mittels P300. KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chronic progressive HIV-1 infection is associated with elevated levels of myeloid-derived suppressor cells. Retrovirology 2012. [PMCID: PMC3441811 DOI: 10.1186/1742-4690-9-s2-p283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Assoziation zwischen den vasoregulatorischen Peptiden Pro-Endothelin-1 und Pro-Adrenomedullin und dem Metabolischen Syndrom/Typ 2 Diabetes in der KORA F4 Studie. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Effektivität der aktuellen Therapie des Gestationsdiabetes in Deutschland; Retrospektive Analyse der Behandlungsergebnisse am Diabeteszentrum der LMU München. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44 Ovarian Cancer and Intraperitoneal Chemotherapy Treatment During Surgery. Eur J Oncol Nurs 2012. [DOI: 10.1016/s1462-3889(12)70059-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Reduced urinary glutamate levels are associated with the frequency of migraine attacks in females. Eur J Neurol 2012; 19:1146-50. [PMID: 22435925 DOI: 10.1111/j.1468-1331.2012.03693.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE Recent evidences indicate that glutamatergic homeostasis disorders are implicated in the pathogenesis of migraine. In particular, plasma and cerebrospinal fluid glutamate levels seem to be altered in migraine patients. However, the impacts of glutamate on migraine and especially on aura symptoms, alterations in the frequency of migraine attacks as well as investigations on glutamate on migraine-related metabolic dysfunctions, like hyperinsulinaemia, and an atherogenic lipid profile remain elusive to date. The aim of the present study was to investigate the impact of glutamate on migraine and related metabolic dysfunctions. METHODS We investigated the urinary glutamate levels of female migraineurs (n = 48) in the interictal phase and healthy controls (n = 48). Parameters of the insulin- and lipid metabolism, inflammatory parameters and anthropometric parameters were additionally determined. RESULTS Urinary glutamate levels of female migraineurs were significantly decreased with respect to the control group. Logistic regression revealed an odds ratio of 4.04 for migraine. We found a significant correlation with the time-period of patients' last attack and a significant inverse correlation with the annual frequency of migraine attacks. Other parameters of the insulin- and lipid metabolism, anthropometric and inflammatory parameters showed no significant correlation with glutamate levels. CONCLUSION We show here that female migraineurs exhibit decreased urinary glutamate levels which are associated with a 4.04-fold higher risk for migraine and correlated with patients' frequency of migraine attacks.
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Impedance sensor technology for cell-based assays in the framework of a high-content screening system. Physiol Meas 2011; 32:977-93. [DOI: 10.1088/0967-3334/32/7/s18] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sensorunterstützte Insulinpumpentherapie bei fortgeschrittener Cystischer Fibrose mit Diabetes mellitus. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Reduced proliferation and a high apoptotic frequency of pancreatic beta cells contribute to genetically-determined diabetes susceptibility of db/db BKS mice. Horm Metab Res 2011; 43:306-11. [PMID: 21412687 DOI: 10.1055/s-0031-1271817] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Leptin receptor-deficient db/db mice are a commonly used research model and it is known that the genetic background, on which the mutation is bred, modulates the phenotype. While diabetes-resistant strains sustain near normal glycemia and hyperinsulinemia, susceptible backgrounds develop overt hyperglycemia and islet involution. We hypothesized that genetically-determined differences in the proliferative capacity and the apoptotic frequency of pancreatic beta cells contribute to this phenotypic disparity. We studied C57BLKS/J (BKS; diabetes-susceptible) and C57BL/6 (B6; diabetes-resistant) db/db mice and heterozygous controls from 5 to 12 weeks of age. Body weight, fasting blood glucose, plasma insulin, HOMA-IR, alpha cell mass, beta cell mass, proliferation and apoptosis were measured. Comparable insulin resistance developed in the 2 db/db strains, which was well compensated for on both genetic backgrounds until 7 weeks of age. As expected, the BKS mice became hyperglycemic at 9 weeks. Beta cell proliferation was initially increased in both db/db strains but decreased rapidly in the BKS mice with advancing age. The rate of beta cell apoptosis was already higher in prediabetic BKS mice than in their B6 counterparts. Beta cell mass increased continuously in the B6 strain until 12 weeks of age, but declined from 7 weeks onwards in BKS. An age-dependent decline of beta cell proliferation and an increased rate of beta cell apoptosis already in the prediabetic state probably contribute to the diabetes susceptibility of db/db BKS mice. These factors could also play a role in the genetic predisposition for type 2 diabetes in humans.
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Abstract
BACKGROUND AND PURPOSE Oxidative stress is discussed to be implicated in the pathophysiology of migraine. However, data are in part controversial and the possible underlying mechanisms remain elusive to date. The aim of this study was to investigate the oxidative stress status of female patients with migraine and its implications on migraine-related metabolic alterations. METHODS Oxidative stress markers malondialdehyde (MDA), 4-hydroxy-2-nonenal (HNE), carbonylated proteins, parameters of associated nitric oxide stress, inflammation, lipid- and glucose-metabolism were determined in the interictal phase in female patients with migraine and controls. RESULTS We found significantly increased HNE levels in female migraineurs compared with controls. Logistic regression analyses of HNE revealed an odds ratio for migraine of 4.55. HNE showed significant correlations with the nitric oxide pathway, the insulin- and the lipid-metabolism. CONCLUSIONS We show here that increased oxidative stress is associated with migraine and contributes to migraine-related metabolic risk like nitrosative stress, an atherogenic lipid profile and hyperinsulinemia. Our data suggest that oxidative stress may represent a key event in the pathophysiology of migraine and a suitable therapeutic target.
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Increased matrix metalloproteinase activity is associated with migraine and migraine-related metabolic dysfunctions. Eur J Neurol 2010; 18:571-6. [PMID: 20825467 DOI: 10.1111/j.1468-1331.2010.03205.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Matrix metalloproteinases (MMPs) and their inhibitors (TIMPs) are discussed to be involved in the pathophysiology of migraine. Moreover, MMPs may also be involved in migraine-related metabolic alterations like an atherogenic lipid profile and hyperinsulinemia. The aim of this study was to investigate the impact of MMPs and TIMPs on migraine with and without aura and related metabolic dysfunctions. METHODS MMP activity, six MMPs and three TIMPs, parameters of the insulin and lipid metabolism as well as anthropometric parameters were determined in 124 non-obese subjects. RESULTS We found highly significant increased MMP activity in migraine patients independent of aura symptoms, which was associated with migraine with an odds ratio of 7.57. Interestingly, none of the determined MMPs and TIMPs showed significant different serum levels between migraine patients and healthy controls. We found significant correlations between MMP activity and parameters of the insulin and lipid metabolism, like Homeostasis Model Assessment index (HOMA index), cholesterol, triglycerides, and oxidized LDL. CONCLUSION We show here that increased MMP activity is tightly associated with migraine and migraine-related hyperinsulinemia and atherogenic lipid alterations. Our findings represent a new pathophysiological mechanism, which may be of clinical relevance, especially in regard to therapeutic approaches using MMP inhibitors.
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Das multifunktionale nukleäre Protein Eny2 reguliert die glukose- und inkretinvermittelte Insulinsekretion. DIABETOL STOFFWECHS 2010. [DOI: 10.1055/s-0030-1255202] [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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Mechanisms of genetically-determined diabetes resistance and susceptibility in db/db mice. DIABETOL STOFFWECHS 2010. [DOI: 10.1055/s-0030-1255186] [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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Abstract
There is growing evidence that alterations in the insulin and glucose metabolism may be involved in the pathogenesis of migraine. Nitric oxide (NO) stress has been associated with migraine. However, the role of NO on the insulin and glucose metabolism in migraineurs has remained elusive to date. The aim of the present study was to investigate the insulin and glucose metabolism in migraineurs and to determine possible interactions with the NO pathway. One hundred and twenty non-obese probands participated in this study, including 48 migraineurs and 72 healthy volunteers. Various parameters of the NO pathway, glucose metabolism as well as body measurement parameters were determined. We found a highly significantly increased insulin and Homeostasis Model Assessment (HOMA)-index in migraine patients, whereas fasting glucose was decreased. Logistic regression revealed an odds ratio of 5.67 for migraine, when comparing the lowest with the highest quartile of HOMA. Multivariate analysis showed that HOMA, waist-to-length ratio and nitrite as parameters of NO stress were highly significantly correlated. We show here that hyperinsulinaemia is associated with migraine and, furthermore, is correlated with increased NO stress. These findings represent a new pathophysiological mechanism that may be of clinical relevance.
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[Consensus statement "Dementia 2010" of the Austrian Alzheimer Society]. NEUROPSYCHIATRIE : KLINIK, DIAGNOSTIK, THERAPIE UND REHABILITATION : ORGAN DER GESELLSCHAFT OSTERREICHISCHER NERVENARZTE UND PSYCHIATER 2010; 24:67-87. [PMID: 20605003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The Austrian Alzheimer Society developed evidence-based guidelines based on a systematic literature search and criteria-guided assessment with subsequent transparent determination of grades of clinical recommendation. The authors evaluated currently available therapeutic approaches for the most common forms of dementia and focused on diagnosis and pharmacological intervention, taking into consideration the situation in Austria. The purpose of these guidelines is the rational and cost-effective use of diagnostic and therapeutic measures in dementing illnesses. Users are physicians and all other providers of care for patients with dementia in Austria.
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