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Salazar R, Tafuto S, Krogh M, Teule A, Garcia-Carbonero R, Klumpen H, Cremer B, Sevilla I, Eriksson B, Tabaksblat E, Metges JP, Reed N, Schrader J, Navarro V, Valentí V, Hernando J, Colao A, Vestermark L, Carnaghi C, Capdevila J. LBA45 Randomized open label phase III study comparing the efficacy and safety of everolimus followed by chemotherapy (CT) with streptozotocin (STZ)-5FU upon progression or the reverse sequence, in advanced progressive panNETs: The SEQTOR study (GETNE 1206). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.08.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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2
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Bönner F, Gastl M, Nienhaus F, Rothe M, Jahn A, Pfeiler S, Gross U, Schultheiss HP, Ibanez B, Kozerke S, Szendroedi J, Roden M, Westenfeld R, Schrader J, Flögel U, Heusch G, Kelm M. Regional analysis of inflammation and contractile function in reperfused acute myocardial infarction by in vivo 19F cardiovascular magnetic resonance in pigs. Basic Res Cardiol 2022; 117:21. [PMID: 35389088 PMCID: PMC8989832 DOI: 10.1007/s00395-022-00928-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/11/2022] [Accepted: 03/22/2022] [Indexed: 01/31/2023]
Abstract
Inflammatory cell infiltration is central to healing after acute myocardial infarction (AMI). The relation of regional inflammation to edema, infarct size (IS), microvascular obstruction (MVO), intramyocardial hemorrhage (IMH), and regional and global LV function is not clear. Here we noninvasively characterized regional inflammation and contractile function in reperfused AMI in pigs using fluorine (19F) cardiovascular magnetic resonance (CMR). Adult anesthetized pigs underwent left anterior descending coronary artery instrumentation with either 90 min occlusion (n = 17) or without occlusion (sham, n = 5). After 3 days, in surviving animals a perfluorooctyl bromide nanoemulsion was infused intravenously to label monocytes/macrophages. At day 6, in vivo 1H-CMR was performed with cine, T2 and T2* weighted imaging, T2 and T1 mapping, perfusion and late gadolinium enhancement followed by 19F-CMR. Pigs were sacrificed for subsequent ex vivo scans and histology. Edema extent was 35 ± 8% and IS was 22 ± 6% of LV mass. Six of ten surviving AMI animals displayed both MVO and IMH (3.3 ± 1.6% and 1.9 ± 0.8% of LV mass). The 19F signal, reflecting the presence and density of monocytes/macrophages, was consistently smaller than edema volume or IS and not apparent in remote areas. The 19F signal-to-noise ratio (SNR) > 8 in the infarct border zone was associated with impaired remote systolic wall thickening. A whole heart value of 19F integral (19F SNR × milliliter) > 200 was related to initial LV remodeling independently of edema, IS, MVO, and IMH. Thus, 19F-CMR quantitatively characterizes regional inflammation after AMI and its relation to edema, IS, MVO, IMH and regional and global LV function and remodeling.
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Affiliation(s)
- Florian Bönner
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - M Gastl
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - F Nienhaus
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - M Rothe
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research, Partner, Düsseldorf, Germany
| | - A Jahn
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany
- Central Animal Research Facility, Heinrich Heine University, Düsseldorf, Germany
| | - S Pfeiler
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - U Gross
- Institute for Cardiac Diagnostics and Therapy (IKDT), Berlin, Germany
| | - H-P Schultheiss
- Institute for Cardiac Diagnostics and Therapy (IKDT), Berlin, Germany
| | - B Ibanez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
- IIS-Fundación Jiménez Díaz Hospital, Madrid, Spain
- CIBERCV, Madrid, Spain
| | - S Kozerke
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - J Szendroedi
- Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - M Roden
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research, Partner, Düsseldorf, Germany
- Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - R Westenfeld
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - J Schrader
- Department of Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany
- Experimental Cardiovascular Imaging, Department of Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany
| | - U Flögel
- Department of Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany
- Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - G Heusch
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Essen Medical School, Essen, Germany
| | - M Kelm
- Division of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty Heinrich Heine University, Moorenstr. 5, 40225, Düsseldorf, Germany
- Cardiovascular Research Institute Düsseldorf (CARID), Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
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Deneke T, Mariani J, Cabanas P, Lau D, Gaspar T, Steffel J, Pierre B, Martens E, Sanfins VM, Schrader J, Bisignani G. Real-world experience with the insertion of a new implantable cardiac monitor. Europace 2021. [DOI: 10.1093/europace/euab116.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Private company. Main funding source(s): Biotronik SE & Co.KG
OnBehalf
BIO|CONCEPT.BIOMONITOR III study group, BIO|MASTER.BIOMONITOR III study group, BIO|STREAM-ICM study group
Background
Implantable Cardiac Monitors (ICM) provide continuous long-term heart rhythm monitoring. The new ICM BIOMONITOR III / IIIm (BM III) is provided with a single-step insertion tool.
Purpose
To report on the insertion procedure of the BM III in a large real-world patient population.
Methods
The BM III combines a low cross-section (4.5 x 8.5 mm) with an extended ICM length (77 mm, including flexible antenna). It is inserted into subcutaneous tissue with an ‘injection’ tool that forms the pocket and delivers the device in a single step. We report results of the insertion procedure from a pooled data set from the BIO|CONCEPT BM III (completed) and the BIO|MASTER BM III and BIO|STREAM-ICM (ongoing) studies.
Results
From 54 investigational sites in 11 countries, 455 insertions were reported (including 39 BM IIIm). The patients were 63 ± 16 years old, had a BMI of 27.6 ± 5.4, and 43% were women. The indications were syncope or pre-syncope (57%), cryptogenic stroke (23%), management of AF (11%) or other (9%). Insertions took 1.7 ± 1.8 minutes until removal of the insertion tool, 4.7 ± 3.4 minutes until wound closure, and 7.1 ± 5.6 minutes including wound cleaning. The wound was sutured (79%) or closed with staples (10%) or adhesive strips (10%). General anaesthesia was used in 8% of the patients and antibiotic prophylaxis in 50% (44% systemic and 6% local). Insertions took place in the catheter laboratory (62%), operating theatre (22%) or in a consultation room (16%) without specific precautional equipment.
The insertion site was parallel to the heart"s long axis (56%), parasternal (39%), in the 2nd/3rd intercostal space (3.5%), axillary (0.9%) or at the clavicula (0.7%). The device was repositioned in one case (0.2%). 13 adverse events were reported in connection to the insertion procedure. 5 cases of device pocket bleeding or hematoma occurred. In 5 further cases, the device migrated, posing the risk of extrusion, or actually extruded. Three of these cases used only adhesive strips or no wound closure at all. In two cases, an incorrect usage of the incision tool and substantial subcutaneous fatty tissue may have contributed. One device was damaged by a 200 J defibrillation shock with a shock electrode placed over the device. One patient suffered from dyspnoea, possibly due to psychogenic hyperventilation. One patient had a vasovagal syncope due to pain after an insertion with insufficient local anaesthesia. No infections were reported until the day of analysis, which was more than 30 days after insertion in 92% of all cases.
Conclusion
The new BM III was inserted in typically less than 5 minutes until wound closure. A relevant number of insertions took place in a consultation room. Prophylactic antibiotics may be unnecessary, because no pocket infections were reported, although no antibiotic prophylaxis was used in one half of all cases (N = 229). In summary, the insertion with the new tool is fast and has a low risk of complications.
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Affiliation(s)
- T Deneke
- Heart Center Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - J Mariani
- The Alfred Hospital, Melbourne, Australia
| | - P Cabanas
- University Hospital Alvaro Cunqueiro, Vigo, Spain
| | - D Lau
- Royal Adelaide Hospital, Adelaide, Australia
| | - T Gaspar
- University Hospital Dresden, Dresden, Germany
| | - J Steffel
- University Hospital Zurich, Zurich, Switzerland
| | - B Pierre
- University Hospital of Tours, Tours, France
| | - E Martens
- Klinikum rechts der Isar, Munich, Germany
| | - VM Sanfins
- Hospital Senhora da Oliveira - Guimaraes, Guimaraes, Portugal
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Pöschel L, Marquardt I, Schrader J, Buchhaupt M. Use of a methylotrophic organism for production of fine chemicals from methanol. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- L. Pöschel
- DECHEMA-Forschungsinstitut Industrielle Biotechnologie Theodor-Heuss-Allee 25 60486 Frankfurt Germany
| | - I. Marquardt
- DECHEMA-Forschungsinstitut Industrielle Biotechnologie Theodor-Heuss-Allee 25 60486 Frankfurt Germany
| | - J. Schrader
- DECHEMA-Forschungsinstitut Industrielle Biotechnologie Theodor-Heuss-Allee 25 60486 Frankfurt Germany
| | - M. Buchhaupt
- DECHEMA-Forschungsinstitut Industrielle Biotechnologie Theodor-Heuss-Allee 25 60486 Frankfurt Germany
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Haque P, Schrader J, Buchhaupt M. High versatility of IPP methyltransferases enables synthesis of C6, C7, and C8 isoprenoid building blocks. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- P. J. Haque
- DECHEMA-Forschungsinstitut Industrial Biotechnology Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - J. Schrader
- DECHEMA-Forschungsinstitut Industrial Biotechnology Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - M. Buchhaupt
- DECHEMA-Forschungsinstitut Industrial Biotechnology Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
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Abstract
The Spanish Hygia study has led to considerable irritation due to the general recommendation to prescribe antihypertensives preferably to be taken in the evening, especially since the lay press as well as medical media made enthusiastic comments. The discussion about the optimal time to take antihypertensive drugs shows once again how dangerous the uncritical handling of study data can be. No possible risks were pointed out. The Hygia study compared 19,084 patients with morning and evening intake of antihypertensive drugs under the control of a 48‑h blood pressure measurement (!). There was a significantly better reduction in blood pressure and the rate of cardiovascular and cerebrovascular events with evening intake. The data are scientifically valuable; however, the conclusions are incomprehensible based on the data, contradict many other studies and are dangerous for certain patient groups. There are also methodological shortcomings. Therefore, a general evening intake is not justified and nonsensical due to the diverse, individually very different pathophysiological findings of the nocturnal blood pressure behavior. Basically, the outpatient 24‑h blood pressure measurement (ABPM) enables a better assessment of the individual cardiovascular and cerebrovascular risks and prevents an incorrect assessment of the blood pressure and thus unnecessary or sufficient treatment. Instead of a general recommendation, the ABPM offers the option of an individually tailored treatment. Taking antihypertensive drugs in the evening should always be preceded by an ABDM in the case of prognostically unfavorable nocturnal hypertension in order to avoid the risk of nocturnal ischemic risks due to excessive drops in blood pressure.
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Affiliation(s)
- J Schrader
- Institut für Hypertonie- und Herz-Kreislauf-Forschung (INFO), Ritterstraße 17, 49661, Cloppenburg, Deutschland.
| | - S Lüders
- Institut für Hypertonie- und Herz-Kreislauf-Forschung (INFO), Ritterstraße 17, 49661, Cloppenburg, Deutschland.,St. Josefs-Hospital Cloppenburg, Cloppenburg, Deutschland
| | - M Middeke
- Hypertoniezentrum München (HZM), München, Deutschland
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Weber A, Schmidt V, Leuders P, Pfaff M, Hesse J, Schrader J, Lichtenberg A, Akhyari P. Dysregulation of ATPases Promotes the Degeneration of Aortic Valves. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Milker S, Hümmer M, Schrader J, Kara S, Liese A, Holtmann D. Deep eutectic solvents in biocatalysis. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- S. Milker
- DECHEMA Research Institute; Industrial Biotechnology; Theodor-Heuss-Allee 25 60486 Frankfurt a. M Germany
| | - M. Hümmer
- DECHEMA Research Institute; Industrial Biotechnology; Theodor-Heuss-Allee 25 60486 Frankfurt a. M Germany
| | - J. Schrader
- DECHEMA Research Institute; Industrial Biotechnology; Theodor-Heuss-Allee 25 60486 Frankfurt a. M Germany
| | - S. Kara
- Hamburg University of Technology; Institute of Technical Biocatalysis; Denickestraße 15 21073 Hamburg Germany
| | - A. Liese
- Hamburg University of Technology; Institute of Technical Biocatalysis; Denickestraße 15 21073 Hamburg Germany
| | - D. Holtmann
- DECHEMA Research Institute; Industrial Biotechnology; Theodor-Heuss-Allee 25 60486 Frankfurt a. M Germany
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Weber A, Leuders P, Barth M, Selig J, Hesse J, Schrader J, Lichtenberg A, Akhyari P. P5089The role of the purinergic signaling system in the degeneration process of aortic valves. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Weber
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Dusseldorf, Germany
| | - P Leuders
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Dusseldorf, Germany
| | - M Barth
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Dusseldorf, Germany
| | - J Selig
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Dusseldorf, Germany
| | - J Hesse
- Heinrich Heine University, Medical Faculty, Department of Molecular Cardiology, Dusseldorf, Germany
| | - J Schrader
- Heinrich Heine University, Medical Faculty, Department of Molecular Cardiology, Dusseldorf, Germany
| | - A Lichtenberg
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Dusseldorf, Germany
| | - P Akhyari
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Dusseldorf, Germany
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10
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Schrader J, Schrader B. [Antihypertensive therapy in the elderly]. Herz 2017; 43:197-206. [PMID: 29188356 DOI: 10.1007/s00059-017-4642-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Arterial hypertension is the most common modifiable risk factor for cerebrovascular and cardiovascular morbidity and mortality in old age. The prevention of cognitive brain disorders is also a therapeutic goal of long-term treatment of hypertension. Older patients also have a higher risk of developing cardiovascular diseases and therefore benefit from a relatively moderate reduction in blood pressure. With respect to the high prevalence of hypertension in old age and the increasing incidence with time, the therapy of hypertension is becoming increasingly more important to achieve an improved prognosis for patients along with a reduction of costs. The accurate blood pressure measurement for elderly patients includes repeated measurements while standing and sitting. Additionally, the measurements should also be conducted by the patient or by a family member. The most accurate method for assessing the daily blood pressure level, e.g. practice hypertension, non-dipping and intermittent hypertension, is the 24-h blood pressure measurement by ambulatory blood pressure monitoring (ABPM). General measures and lifestyle interventions are effective for reducing blood pressure of elderly patients with hypertension and a low salt diet is scientifically proven to be superior. The same drugs used for young people are also recommended for older patients and most give preference to diuretics, renin-angiotensin-aldosterone system (RAAS) inhibitors and calcium antagonists. The target blood pressure in elderly patients is repeatedly the focus of scientific discussions. The current recommendations are presented in the text and the characteristics which must be particularly considered in the therapy of elderly patients are presented in detail.
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Affiliation(s)
- J Schrader
- Medizinische Klinik, St.-Josefs-Hospital Cloppenburg, Krankenhausstr. 13, 49661, Cloppenburg, Deutschland.
| | - B Schrader
- Medizinische Klinik, St.-Josefs-Hospital Cloppenburg, Krankenhausstr. 13, 49661, Cloppenburg, Deutschland
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Neuberger A, Ring S, Silva-Vilches C, Schrader J, Enk A, Mahnke K. Expression of CD73 slows down migration of skin dendritic cells, affecting the sensitization phase of contact hypersensitivity reactions in mice. J Dermatol Sci 2017; 87:292-299. [PMID: 28743609 DOI: 10.1016/j.jdermsci.2017.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 07/03/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Application of haptens to the skin induces release of immune stimulatory ATP into the extracellular space. This "danger" signal can be converted to immunosuppressive adenosine (ADO) by the action of the ectonucleotidases CD39 and CD73, expressed by skin and immune cells. Thus, the expression and regulation of CD73 by skin derived cells may have crucial influence on the outcome of contact hypersensitivity (CHS) reactions. OBJECTIVE To investigate the role of CD73 expression during 2,4,6-trinitrochlorobenzene (TNCB) induced CHS reactions. METHODS Wild type (wt) and CD73 deficient mice were subjected to TNCB induced CHS. In the different mouse strains the resulting ear swelling reaction was recorded along with a detailed phenotypic analysis of the skin migrating subsets of dendritic cells (DC). RESULTS In CD73 deficient animals the motility of DC was higher as compared to wt animals and in particular after sensitization we found increased migration of Langerin+ DC from skin to draining lymph nodes (LN). In the TNCB model this led to a stronger sensitization as indicated by increased frequency of interferon-γ producing T cells in the LN and an increased ear thickness after challenge. CONCLUSION CD73 derived ADO production slows down migration of Langerin+ DC from skin to LN. This may be a crucial mechanism to avoid over boarding immune reactions against haptens.
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Affiliation(s)
- A Neuberger
- Ruprecht-Karls-University Heidelberg, Department of Dermatology, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - S Ring
- Ruprecht-Karls-University Heidelberg, Department of Dermatology, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - C Silva-Vilches
- Ruprecht-Karls-University Heidelberg, Department of Dermatology, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - J Schrader
- University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Germany
| | - A Enk
- Ruprecht-Karls-University Heidelberg, Department of Dermatology, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - K Mahnke
- Ruprecht-Karls-University Heidelberg, Department of Dermatology, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany.
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Nentwich M, Menzel K, Reeh M, Uzunoglu F, Ghadban T, Bachmann K, Schrader J, Bockhorn M, Izbicki J, Perez D. Blood fibrinogen levels discriminate low- and high-risk intraductal papillary mucinous neoplasms (IPMNs). Eur J Surg Oncol 2017; 43:758-762. [DOI: 10.1016/j.ejso.2016.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/05/2016] [Accepted: 12/16/2016] [Indexed: 01/26/2023] Open
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Schrader J, Henes F, Perez D, Burdak-Rothkamm S, Stein A, Izbicki J, Lohse A. Successful mTOR inhibitor therapy for a metastastic neuroendocrine tumour in a patient with a germline TSC2 mutation. Ann Oncol 2017; 28:904-905. [DOI: 10.1093/annonc/mdx007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Indexed: 01/10/2023] Open
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Weber A, Dakaras K, Barth M, Baier K, Schrader J, Lichtenberg A, Akhyari P. Elevated ATP Levels Promote the Mineralization of Valvular Interstitial Cells. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- A. Weber
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Düsseldorf, Germany
| | - K. Dakaras
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Düsseldorf, Germany
| | - M. Barth
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Düsseldorf, Germany
| | - K. Baier
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Düsseldorf, Germany
| | - J. Schrader
- Heinrich Heine University, Medical Faculty, Department of Molecular Cardiology, Düsseldorf, Germany
| | - A. Lichtenberg
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Düsseldorf, Germany
| | - P. Akhyari
- Heinrich Heine University, Medical Faculty, Cardiovascular Surgery, Experimental Surgery, Düsseldorf, Germany
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Mi J, Sydow A, Schempp F, Becher D, Schewe H, Schrader J, Buchhaupt M. Investigation of Plasmid-Induced Growth Defect in Pseudomonas putida. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Horst A, Bormann S, Schrader J, Holtmann D. Oxyfunktionalisierungen mit der unspezifischen Peroxygenase aus Agrocybe aegerita. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Hümmer M, Schrader J, Liese A, Holtmann D. Deep Eutectic Solvents als neuartige Reaktionsmedien in der Biokatalyse. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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18
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Huth I, Baumann L, Holtmann D, Schrader J. Cultivation of Aspergillus nigerin Microtiter Plates - Gaining Control of Complex Morphologies. CHEM-ING-TECH 2016. [DOI: 10.1002/cite.201650375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ingwersen J, Wingerath B, Graf J, Lepka K, Hofrichter M, Schröter F, Wedekind F, Bauer A, Schrader J, Hartung HP, Prozorovski T, Aktas O. Dual roles of the adenosine A2a receptor in autoimmune neuroinflammation. J Neuroinflammation 2016; 13:48. [PMID: 26920550 PMCID: PMC4768407 DOI: 10.1186/s12974-016-0512-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/16/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Conditions of inflammatory tissue distress are associated with high extracellular levels of adenosine, due to increased adenosine triphosphate (ATP) degradation upon cellular stress or the release of extracellular ATP upon cell death, which can be degraded to adenosine by membrane-bound ecto-enzymes like CD39 and CD73. Adenosine is recognised to mediate anti-inflammatory effects via the adenosine A2a receptor (A2aR), as shown in experimental models of arthritis. Here, using pharmacological interventions and genetic inactivation, we investigated the roles of A2aR in experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS). METHODS We used two independent mouse EAE variants, i.e. active immunization in C57BL/6 with myelin oligodendrocyte glycoprotein (MOG)35-55 or transfer-EAE by proteolipid protein (PLP)139-155-stimulated T lymphocytes and EAE in mice treated with A2aR-agonist CGS21680 at different stages of disease course and in mice lacking A2aR (A2aR(-/-)) compared to direct wild-type littermates. In EAE, we analysed myelin-specific proliferation and cytokine synthesis ex vivo, as well as inflammation and demyelination by immunohistochemistry. In vitro, we investigated the effect of A2aR on migration of CD4(+) T cells, macrophages and microglia, as well as the impact of A2aR on phagocytosis of macrophages and microglia. Statistical tests were Mann-Whitney U and Student's t test. RESULTS We found an upregulation of A2aR in the central nervous system (CNS) in EAE, predominantly detected on T cells and macrophages/microglia within the inflamed tissue. Preventive EAE treatment with A2aR-specific agonist inhibited myelin-specific T cell proliferation ex vivo and ameliorated disease, while application of the same agonist after disease onset exacerbated non-remitting EAE progression and resulted in more severe tissue destruction. Accordingly, A2aR-deficient mice showed accelerated and exacerbated disease manifestation with increased frequencies of IFN-γ-, IL-17- and GM-CSF-producing CD4(+) T helper cells and higher numbers of inflammatory lesions in the early stage. However, EAE quickly ameliorated and myelin debris accumulation was lower in A2aR(-/-) mice. In vitro, activation of A2aR inhibited phagocytosis of myelin by macrophages and primary microglia as well as migration of CD4(+) T cells, macrophages and primary microglia. CONCLUSIONS A2aR activation exerts a complex pattern in chronic autoimmune neurodegeneration: while providing anti-inflammatory effects on T cells and thus protection at early stages, A2aR seems to play a detrimental role during later stages of disease and may thus contribute to sustained tissue damage within the inflamed CNS.
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Affiliation(s)
- J Ingwersen
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - B Wingerath
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - J Graf
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - K Lepka
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - M Hofrichter
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - F Schröter
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany. .,Current address: Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, HeinrichHeine University, Moorenstrasse 5, 40225, Düsseldorf, Germany.
| | - F Wedekind
- Institute of Neuroscience and Medicine, INM-2, Research Center Jülich, Leo-Brandt-Str., 52425, Jülich, Germany.
| | - A Bauer
- Institute of Neuroscience and Medicine, INM-2, Research Center Jülich, Leo-Brandt-Str., 52425, Jülich, Germany.
| | - J Schrader
- Cardiovascular Physiology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany.
| | - H-P Hartung
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - T Prozorovski
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - O Aktas
- Department of Neurology, Medical Faculty, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
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Ruschitzka F, Schrader J, Lüders S, Schulz E, Gronau C, Talartschik J, Eisenhauer T, Verwiebe R, Warneke G, Scheler F. Effects of endothelin on coagulation, prostaglandins and hemodynamics. Contrib Nephrol 2015; 101:30-6. [PMID: 8467685 DOI: 10.1159/000422104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- F Ruschitzka
- Department of Nephrology and Rheumatology, University of Göttingen, FRG
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Matthaei D, Kramer P, Grieben K, Schrader J, Ansorg R, Scheler F. Advantages of continuous arteriovenous hemofiltration in the management of acute renal failure. Contrib Nephrol 2015; 32:175-80. [PMID: 7128155 DOI: 10.1159/000406921] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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22
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Bönner F, Merx M, Klingel K, Begovatz P, Flögel U, Sager M, Temme S, Jacoby C, Salehi Ravesh M, Grapentin C, Schubert R, Bunke J, Roden M, Kelm M, Schrader J. Monocyte imaging after myocardial infarction with 19F MRI at 3 T: a pilot study in explanted porcine hearts. ACTA ACUST UNITED AC 2015; 16:612-20. [DOI: 10.1093/ehjci/jev008] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 01/12/2015] [Indexed: 12/23/2022]
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23
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Schrader J, Niebel P, Rossi A, Archontidou-Aprin E, Hörsch D. Differential signaling by regulatory subunits of phosphoinositide-3-kinase influences cell survival in INS-1E insulinoma cells. Exp Clin Endocrinol Diabetes 2014; 123:118-25. [PMID: 25393342 DOI: 10.1055/s-0034-1390461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Class 1A phosphoinositide 3-kinase (PI3K) is essential for beta-cell growth and survival. Although PI3K has been studied extensively in diabetes the effect of alternatively spliced isoforms of the catalytic subunit p85α on beta cell proliferation and survival remains to be defined.We examined expression and signaling of alternatively spliced PI3K regulatory subunits p85α, p55α and p50α in insulinoma cells (INS-1E), an insulin-producing beta cell line. PI3K regulatory isoforms were knocked down by siRNA transfection or overexpressed by adenoviral gene delivery.Knockdown of p85α elevated PI3K activation determined by Akt phosphorylation at baseline and after stimulation with growth factors. In contrast, Akt phosphorylation was inhibited by overexpression of all isoforms of p85α. Correspondingly, p55α and p85α overexpression decreased downstream kinase GSK-3 phosphorylation as well, whereas p50α overexpression resulted in an activation of GSK-3. Moreover, overexpression of p50α and p85α lead to retinoblastoma protein hyperphosphorylation and S-phase entry. Upon challenge of INS-1E cells with a cytotoxic cytokine cocktail, levels of p85α were reduced and p50α was upregulated. Selective overexpression of p50α prevented cytokine induced apoptosis in INS-1E cells.In conclusion, signalling of p50α, p55α and p85α is similar at the level of Akt, but differentially influence downstream GSK-3 activation and cell cycle entry. PI3K isoform p50α induction by cytokines provides a link between regeneration and cell survival under cytotoxic stress in insulin-producing pancreatic beta-cells.
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Affiliation(s)
- J Schrader
- Department of Internal Medicine, Division of Gastroenterology and Endocrinology, Philipps-University Marburg, Marburg, Germany
| | - P Niebel
- Department of Internal Medicine, Division of Gastroenterology and Endocrinology, Philipps-University Marburg, Marburg, Germany
| | - A Rossi
- Department of Internal Medicine, Division of Gastroenterology and Endocrinology, Philipps-University Marburg, Marburg, Germany
| | - E Archontidou-Aprin
- Department of Internal Medicine, Division of Gastroenterology and Endocrinology, Philipps-University Marburg, Marburg, Germany
| | - D Hörsch
- Department of Internal Medicine, Division of Gastroenterology and Endocrinology, Philipps-University Marburg, Marburg, Germany
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Huth I, Etschmann M, Holtmann D, Schrader J. Mikropartikel verbessern die Produktbildung filamentöser Pilze und ermöglichen die Mikrotiterplattenkultivierung. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Vernen F, Huth I, Holtmann D, Schrader J. Mikropartikel-basierte Kultivierung zur Produktion von Antibiotika. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Ströhle F, Kranen E, Maas R, Schrader J, Holtmann D. Kombination von Oberflächen-exprimierten P450-Monooxygenasen und Kofaktorregeneration als neuartige Plattformtechnologie. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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Mi J, Becher D, Schewe H, Buchhaupt M, Holtmann D, Schrader J. Produktion von Monoterpenoiden mit rekombinanten Pseudomonas putidaDSM 12264. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Holtmann D, Mangold K, Schrader J. Bioelektrochemische Synthesen. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Leuchs S, Holtmann D, Schrader J, Greiner L. In-Situ-Cofaktor-Monitoring mittels Fluoreszenzspektroskopie. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Guder JC, Buchhaupt M, Huth I, Hannappel A, Ferreirós N, Geisslinger G, Schrader J. Biotechnological approach towards a highly efficient production of natural prostaglandins. Biotechnol Lett 2014; 36:2193-8. [DOI: 10.1007/s10529-014-1610-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 07/03/2014] [Indexed: 11/28/2022]
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31
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Etschmann MMW, Huth I, Walisko R, Schuster J, Krull R, Holtmann D, Wittmann C, Schrader J. Improving 2-phenylethanol and 6-pentyl-α-pyrone production with fungi by microparticle-enhanced cultivation (MPEC). Yeast 2014; 32:145-57. [PMID: 24910400 DOI: 10.1002/yea.3022] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 05/19/2014] [Accepted: 06/02/2014] [Indexed: 11/07/2022] Open
Abstract
Trichoderma atroviride IMI 206040 synthesizes the coconut lactone 6-pentyl-α-pyrone (6-PAP) de novo and Aspergillus niger DSM 821 produces the rose-like flavour compound 2-phenylethanol (2-PE) from the precursor l-phenylalanine. Here, microparticles of different chemical composition and nominal particle diameter in the range 5-250 µm were added to shake-flask cultures of both fungi to investigate the particles' effect on product formation. Maximum 2-PE concentration increased by a factor of 1.3 to 1430 mg/l with the addition of 2% w/v talc (40 µm diameter). Maximum 6-PAP concentration increased by a factor of 2 to 40 mg/l with the addition of 2% w/v iron (II, III) oxide. The influence of ions leaching out of the particles was investigated by cultivating the fungi in leached particle medium. For the first time, the positive effect of the microparticle-enhanced cultivation (MPEC) technique on the microbial production of volatile metabolites, here flavour compounds from submerged fungal cultures, is demonstrated. The effect is strain- and particle-specific.
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Jelenik T, Floegel U, Phielix E, Kaul K, Nowotny P, Partke HJ, Schrader J, Roden M, Szendroedi J. Non-alcoholic fatty liver disease and insulin resistance are associated with increased cardiac oxidative stress in mice. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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33
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Mueller J, Garbers C, Ding Z, Schrader J, Scheller J, Fischer JW. Interleukin-6 promotes formation of provisional hyaluronan matrix post myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Jelenik T, Flögel U, Phielix E, Nowotny P, Partke HJ, Schrader J, Roden M, Szendrödi J. Increased cardiac oxidative stress in a mouse transgenic model of non-alcoholic fatty liver disease and insulin resistance. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Schrader J, Lüders S, Haller H, Kolloch R, Schulz E, Trenkwalder P, Zidek W. Empfehlungen zur antihypertensiven Therapie bei Patienten nach Schlaganfall: Zielblutdruck. Dtsch Med Wochenschr 2012; 137:2511-4. [DOI: 10.1055/s-0032-1327230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | | | - R. Kolloch
- Ev. Krankenhaus Gilead Kliniken Bielefeld
| | - E. Schulz
- Nephrologisches Zentrum Göttingen GbR
| | | | - W. Zidek
- Universitätsklinikum Charité Benjamin Franklin Berlin
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Hüttmann S, Buchhaupt M, Schrader J. Weiße Mutanten des filamentösen Pilzes Caldariomyces fumago als vielversprechende Stämme zur Produktion von Chloroperoxidase. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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37
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Holtmann D, Krieg T, Magnusson A, Kochius S, Zengin Cekic S, Schrader J. Elektroenzymatische Prozesse. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Etschmann M, Huth I, Schrader J. Mikropartikelunterstützte Kultivierung: Neue Wege zur Produktion von Aromastoffen mit filamentösen Pilzen. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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40
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Flögel U, Su S, Kreideweiss I, Ding Z, Galbarz L, Fu J, Jacoby C, Witzke O, Schrader J. Noninvasive detection of graft rejection by in vivo (19) F MRI in the early stage. Am J Transplant 2011; 11:235-44. [PMID: 21214858 DOI: 10.1111/j.1600-6143.2010.03372.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Diagnosis of transplant rejection requires tissue biopsy and entails risks. Here, we describe a new (19) F MRI approach for noninvasive visualization of organ rejection via the macrophage host response. For this, we employed biochemically inert emulsified perfluorocarbons (PFCs), known to be preferentially phagocytized by monocytes and macrophages. Isografts from C57BL/6 or allografts from C57B10.A mice were heterotopically transplanted into C57BL/6 recipients. PFCs were applied intravenously followed by (1) H/(19) F MRI at 9.4 T 24 h after injection. (1) H images showed a similar position and anatomy of the graft in the abdomen for both cases. However, corresponding (19) F signals were only observed in allogenic tissue. (1) H/(19) F MRI enabled us to detect the initial immune response not later than 3 days after surgery, when conventional parameters did not reveal any signs of rejection. In allografts, the observed (19) F signal strongly increased with time and correlated with the extent of rejection. In separate experiments, rapamycin was used to demonstrate the ability of (19) F MRI to monitor immunosuppressive therapy. Thus, PFCs can serve as positive contrast agent for the early detection of transplant rejection by (19) F MRI with high spatial resolution and an excellent degree of specificity due to lack of any (19) F background.
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Affiliation(s)
- U Flögel
- Cardiovascular Physiology, Heinrich Heine University Düsseldorf, Germany.
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Buchhaupt M, Etschmann M, Schrader J. Green Notes - Natürliche Aromastoffe durch biokatalytische Umwandlung von Fettsäuren. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Zengin Çekiç S, Holtmann D, Mangold K, Schrader J. Mediated Electron Transfer with P450cin. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Buchhaupt M, Hüttmann S, Ehrich K, Schrader J. Überexpression von Chloroperoxidase in Caldariomyces fumago. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Diener HC, Aichner F, Bode C, Böhm M, Eckstein HH, Einhäupl K, Endres M, Forsting F, Gesenhues S, Grond M, Haberl R, Hacke W, Hennerici M, Lyrer P, Link A, Ringelstein B, Ringleb P, Schrader J, Weimar C. Primary and secondary prevention of cerebral ischemia. Akt Neurol 2010. [DOI: 10.1055/s-0029-1223537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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45
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Siepermann M, Degistirici O, Burghoff S, Schrader J, Borkhardt A, Meisel R. CD73-mediated adenosine generation – a novel metabolic pathway of MSC-mediated immunosuppression. Klin Padiatr 2010. [DOI: 10.1055/s-0030-1254494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sandt A, Windler R, Gödecke A, Ohlig J, Becher S, Rassaf T, Schrader J, Kelm M, Merx M. Neuronal NOS-inhibition in the setting of septic cardiomyopathy. Crit Care 2010. [PMCID: PMC2934013 DOI: 10.1186/cc8252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Abstract
On the background of aging population an increase of patients suffering from stroke has to be expected during the next years and decades. Strokes are the 3rd leading cause of death and reason for disability in Germany and many other countries. An effective treatment of the modifiable risk factors hypertension, hyperlipidemia, diabetes mellitus, atrial fibrillation, smoking, alcohol consumption, and adipositas is of enormous impact. Due to the linear relationship between blood pressure and risk of stroke, the treatment of hypertension is the most important and effective one in primary as well as in secondary prevention. Treatment with platelet inhibitors plays an additional important role in secondary prevention. Patients with atrial fibrillation should receive an effective oral anticoagulatory therapy when there are certain risk factors.
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Affiliation(s)
- S Lüders
- St. Josefs-Hospital, Krankenhausstrasse 13, 49661, Cloppenburg, Deutschland.
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Wagner SM, Lawo T, Rosada B, Kuschkowitz F, Buddensiek M, Schrader J, Schaldach M. Abhängigkeit der Defibrillationsschwelle von Schockdauer und Entladekapazität. Bestimmung der Chronaxie-Rheobasebeziehung der Defibrillation. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1998.43.s1.358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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50
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Nacke C, Schilling M, Schrader J. Carotinoid-Biokonversion durch regiospezifische oxidative Spaltung. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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