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Schmitt A, Behnes M, Weidner K, Abumayyaleh M, Reinhardt M, Abel N, Lau F, Forner J, Ayoub M, Mashayekhi K, Akin I, Schupp T. Prognostic impact of prior LVEF in patients with heart failure with mildly reduced ejection fraction. Clin Res Cardiol 2024:10.1007/s00392-024-02443-0. [PMID: 38619579 DOI: 10.1007/s00392-024-02443-0] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 03/25/2024] [Indexed: 04/16/2024]
Abstract
AIMS As there is limited evidence regarding the prognostic impact of prior left ventricular ejection fraction (LVEF) in patients with heart failure with mildly reduced ejection fraction (HFmrEF), this study investigates the prognostic impact of longitudinal changes in LVEF in patients with HFmrEF. METHODS Consecutive patients with HFmrEF (i.e. LVEF 41-49% with signs and/or symptoms of HF) were included retrospectively in a monocentric registry from 2016 to 2022. Based on prior LVEF, patients were categorized into three groups: stable LVEF, improved LVEF, and deteriorated LVEF. The primary endpoint was 30-months all-cause mortality (median follow-up). Secondary endpoints included in-hospital and 12-months all-cause mortality, as well as HF-related rehospitalization at 12 and 30 months. Kaplan-Meier and multivariable Cox proportional regression analyses were applied for statistics. RESULTS Six hundred eighty-nine patients with HFmrEF were included. Compared to their prior LVEF, 24%, 12%, and 64% had stable, improved, and deteriorated LVEF, respectively. None of the three LVEF groups was associated with all-cause mortality at 12 (p ≥ 0.583) and 30 months (31% vs. 37% vs. 34%; log rank p ≥ 0.376). In addition, similar rates of 12- (p ≥ 0.533) and 30-months HF-related rehospitalization (21% vs. 23% vs. 21%; log rank p ≥ 0.749) were observed. These findings were confirmed in multivariable regression analyses in the entire study cohort. CONCLUSION The transition from HFrEF and HFpEF towards HFmrEF is very common. However, prior LVEF was not associated with prognosis, likely due to the persistently high dynamic nature of LVEF in the follow-up period.
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Affiliation(s)
- Alexander Schmitt
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Michael Behnes
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany.
| | - Kathrin Weidner
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Mohammad Abumayyaleh
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Marielen Reinhardt
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Noah Abel
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Felix Lau
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Jan Forner
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Mohamed Ayoub
- Division of Cardiology and Angiology, Heart Centre University of Bochum, Bad Oeynhausen, Germany
| | - Kambis Mashayekhi
- Department of Internal Medicine and Cardiology, Mediclin Heart Centre Lahr, Lahr, Germany
| | - Ibrahim Akin
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Tobias Schupp
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim (UMM), Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
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Schupp T, Weidner K, Reinhardt M, Abel N, Schmitt A, Lau F, Kittel M, Bertsch T, Weiß C, Behnes M, Akin I. Effect of anaemia and iron deficiency in heart failure with mildly reduced ejection fraction. Eur J Clin Invest 2024:e14205. [PMID: 38597298 DOI: 10.1111/eci.14205] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/06/2024] [Accepted: 03/03/2024] [Indexed: 04/11/2024]
Abstract
OBJECTIVE The present study aims to clarify the prevalence and prognostic impact of anaemia and iron deficiency in patients with heart failure with mildly reduced ejection fraction (HFmrEF). BACKGROUND The prognostic impact of anaemia and iron deficiency in HFmrEF has not yet been clarified. METHODS Consecutive patients with HFmrEF were retrospectively included at one institution from 2016 to 2022. Patients with anaemia (i.e. haemoglobin <13 g/dL in males and < 12 g/dL in females) were compared to patients without, respectively patients with or without iron deficiency. The primary endpoint was all-cause mortality at 30 months (median follow-up), secondary endpoints comprised HF-related rehospitalisation. RESULTS Two thousand one hundred and fifty four patients with HFmrEF with a median haemoglobin level of 12.2 g/dL were included. Anaemia was present in 52% of patients with HFmrEF and associated with a higher risk of all-cause mortality (44% vs. 18%; HR = 3.021; 95% CI 2.552-3.576; p =.001) and HF-related rehospitalisation (18% vs. 8%; HR = 2.351; 95% CI 1.819-3.040; p =.001) at 30 months, which was confirmed after multivariable adjustment. Although iron status was infrequently assessed in anaemics with HFmrEF (27%), the presence of iron deficiency was associated with higher risk of rehospitalisation for worsening HF (25% vs. 15%; HR = 1.746; 95% CI 1.024-2.976; p =.038), but not all-cause mortality (p =.279) at 30 months. CONCLUSION Anaemia and iron deficiency are very common in atleast half of patients with HFmrEF and independently associated with adverse long-term prognosis.
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Affiliation(s)
- Tobias Schupp
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Kathrin Weidner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Marielen Reinhardt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Noah Abel
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Alexander Schmitt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Felix Lau
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Maximilian Kittel
- Institute for Clinical Chemistry, Faculty of Medicine Mannheim, Heidelberg University, Mannheim, Germany
| | - Thomas Bertsch
- Institute of Clinical Chemistry, Laboratory Medicine and Transfusion Medicine, Nuremberg General Hospital, Paracelsus Medical University, Nuremberg, Germany
| | - Christel Weiß
- Department of Statistical Analysis, Faculty of Medicine Mannheim, University of Heidelberg, Mannheim, Germany
| | - Michael Behnes
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Ibrahim Akin
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
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Abel N, Behnes M, Schmitt A, Reinhardt M, Lau F, Abumayyaleh M, Sieburg T, Weidner K, Ayoub M, Mashayekhi K, Akin I, Schupp T. Prognostic Value of Mitral Valve Regurgitation in Patients with Heart Failure with Mildly Reduced Ejection Fraction. Hellenic J Cardiol 2024:S1109-9666(24)00074-5. [PMID: 38556074 DOI: 10.1016/j.hjc.2024.03.013] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/22/2024] [Accepted: 03/24/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Although mitral valve regurgitation (MR) is a common valvular heart disease in patients with heart failure (HF), there is a paucity of data on the characterization and outcomes of patients with HFmrEF and concomitant MR. METHODS From 2016 to 2022, consecutive patients hospitalized with HFmrEF (i.e., left ventricular ejection fraction 41-49% and signs and/or symptoms of HF) were retrospectively included at one institution. Patients with MR were compared with patients without, further risk stratification was performed according to MR severity an etiology (i.e., primary vs. secondary MR). The primary endpoint was all-cause mortality at 30-months (median follow-up), key secondary endpoint was hospitalization for worsening HF. RESULTS From a total of 2,181 patients hospitalized with HFmrEF, 59% presented with mild, 10% with moderate and 2% with severe MR. MR was associated with increased all-cause mortality at 30 months (HR = 1.756; 95% CI 1.458 - 2.114; p = 0.001), with higher risk in more advanced stages. Furthermore, MR patients had higher risk of HF-related re-hospitalization at 30 months (HR = 1.560; 95% CI 1.172 - 2.076; p = 0.002). Even after multivariable adjustment, mild, moderate and severe MR were still associated with all-cause mortality. Finally, the risk of all-cause mortality was lower in patients with secondary MR compared to patients with primary MR (HR = 0.592; 95% CI 0.366 - 0.956; p = 0.032). CONCLUSION MR is common in HFmrEF and independently associated with higher risk of all-cause mortality and HF-hospitalization.
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Affiliation(s)
- Noah Abel
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Michael Behnes
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany.
| | - Alexander Schmitt
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Marielen Reinhardt
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Felix Lau
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Mohammad Abumayyaleh
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Tina Sieburg
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Kathrin Weidner
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Mohamed Ayoub
- Division of Cardiology and Angiology, Heart Center University of Bochum, Bad Oeynhausen 32545, Germany
| | - Kambis Mashayekhi
- Department of Internal Medicine and Cardiology, MediClin Heart Centre Lahr, Lahr, Germany
| | - Ibrahim Akin
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Tobias Schupp
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
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Schupp T, Bertsch T, Reinhardt M, Abel N, Schmitt A, Lau F, Abumayyaleh M, Akin M, Weiß C, Weidner K, Behnes M, Akin I. Effect of Heart Failure Pharmacotherapies in Patients with Heart Failure with Mildly Reduced Ejection Fraction. Eur J Prev Cardiol 2024:zwae121. [PMID: 38513366 DOI: 10.1093/eurjpc/zwae121] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/09/2024] [Accepted: 03/19/2024] [Indexed: 03/23/2024]
Abstract
OBJECTIVE The study sought to comprehensively investigate the effect of heart failure (HF) pharmacotherapies in patients with heart failure with mildly reduced ejection fraction (HFmrEF). BACKGROUND In the absence of randomized controlled trials, guideline recommendations concerning HF-related therapies in patients with HFmrEF are limited. METHODS Consecutive patients hospitalized with HFmrEF were retrospectively included at one institution from 2016 to 2022. The prognostic value of treatment with beta-blockers (BB), angiotensin-converting enzyme inhibitors, receptor blockers or receptor-neprilysin inhibitor (ACEi/ARB/ARNI), mineralocorticoid receptor antagonists (MRA) and sodium-glucose transport protein 2 inhibitors (SGLT2i) was investigated for all-cause mortality at 30 months (median follow-up) and HF-related rehospitalization. RESULTS 2,109 patients with HFmrEF were included. Treatment with BB (27.0% vs. 35%; HR = 0.737; 95% CI 0.617-0.881; p = 0.001), ACEi/ARB/ARNI (25.9% vs. 37.6%; HR = 0.612; 95% CI 0.517-0.725; p = 0.001) and SGLT2i (11.9% vs. 29.5%; HR = 0.441; 95% CI 0.236-0.824; p = 0.010) was associated with lower risk of 30-months all-cause mortality, which was still demonstrated after multivariable adjustment and propensity score matching. In contrast, MRA treatment was not associated with long-term prognosis. The risk of HF-related rehospitalization was not affected by HF pharmacotherapies. Finally, the lowest risk of long-term all-cause mortality was observed in patients with combined use of BB, ACEi/ARB/ARNI and SGLT2i (HR = 0.456; 95% CI 0.227-0.916; p = 0.027). CONCLUSION BB, ACEi/ARB/ARNI and SGLT2i were independently associated with lower risk of all-cause mortality in patients with HFmrEF, specifically when applied as combined "HF triple therapy". Randomized studies are needed to investigate the effect of HF-related pharmacotherapies in patients with HFmrEF.
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Affiliation(s)
- Tobias Schupp
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Thomas Bertsch
- Institute of Clinical Chemistry, Laboratory Medicine and Transfusion Medicine, Nuremberg General Hospital, Paracelsus Medical University, Nuremberg, Germany
| | - Marielen Reinhardt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Noah Abel
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Alexander Schmitt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Felix Lau
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Mohammad Abumayyaleh
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Muharrem Akin
- Department of Cardiology, St. Josef-Hospital, Ruhr-Universität Bochum, 44791 Bochum, Germany
| | - Christel Weiß
- Department of Statistical Analysis, Faculty of Medicine Mannheim, University of Heidelberg, Mannheim, Germany
| | - Kathrin Weidner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Michael Behnes
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Ibrahim Akin
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
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Lau F, Schupp T, Schmitt A, Reinhardt M, Abel N, Abumayyaleh M, Weidner K, Duerschmied D, Ayoub M, Mashayekhi K, Akin M, Ayasse N, Akin I, Behnes M. Prognostic impact of chronic obstructive pulmonary disease in patients with heart failure with mildly reduced ejection fraction. Respir Med 2024; 223:107536. [PMID: 38272377 DOI: 10.1016/j.rmed.2024.107536] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 01/05/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024]
Abstract
BACKGROUND The aging population has led to a significant increase in heart failure (HF) patients. Related to demographic changes, the burden with comorbidities was shown to increase in patients with HF. Whereas chronic obstructive pulmonary disease (COPD) was yet demonstrated to be associated with adverse outcomes in patients with HF, the prognostic impact of COPD in HF with mildly reduced ejection fraction (HFmrEF) has not yet been clarified. OBJECTIVE The study investigates the prognostic impact of COPD in patients hospitalized with HFmrEF. METHODS Consecutive patients with HFmrEF were retrospectively included at one institution from 2016 to 2022. Patients with COPD were compared to patients without with regard to the primary endpoint all-cause mortality at 30 months (median follow-up). Secondary endpoints comprised in-hospital mortality, HF-related re-hospitalization, cardiac re-hospitalization and major adverse cardiac and cerebrovascular events (MACCE) at 30 months. RESULTS A total of 2184 patients with HFmrEF were included with a prevalence of COPD of 12.0 %. Patients with COPD were older (median 77 vs. 75 years; p = 0.025), had increased burden of cardiovascular comorbidities and more advanced HF symptoms. At 30 months, patients with COPD had an increased risk of all-cause mortality compared to patients without (45 % vs. 30 %; HR = 1.667; 95 % CI 1.366-2.034; p = 0.001), alongside with a higher risk of re-hospitalization for worsening HF (20 % vs. 12 %; HR = 1.658; 95 % CI 1.218-2.257; p = 0.001). CONCLUSION COPD is independently associated with adverse outcomes in patients hospitalized with HFmrEF.
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Affiliation(s)
- Felix Lau
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Tobias Schupp
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany.
| | - Alexander Schmitt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Marielen Reinhardt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Noah Abel
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Mohammad Abumayyaleh
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Kathrin Weidner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Daniel Duerschmied
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Mohamed Ayoub
- Division of Cardiology and Angiology, Heart Center University of Bochum - Bad Oeynhausen, Germany
| | - Kambis Mashayekhi
- Department of Internal Medicine and Cardiology, Mediclin Heart Center Lahr, Lahr, Germany
| | - Muharrem Akin
- Department of Cardiology, Angiology, Hannover Medical School, Carl-Neuberg Straße 1, 30625, Hannover, Germany
| | - Niklas Ayasse
- 5th Medical Department, University Hospital Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Ibrahim Akin
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
| | - Michael Behnes
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany
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Schmitt A, Schupp T, Reinhardt M, Abel N, Lau F, Forner J, Ayoub M, Mashayekhi K, Weiß C, Akin I, Behnes M. Prognostic impact of acute decompensated heart failure in patients with heart failure with mildly reduced ejection fraction. Eur Heart J Acute Cardiovasc Care 2024; 13:225-241. [PMID: 37950915 DOI: 10.1093/ehjacc/zuad139] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/13/2023]
Abstract
AIMS This study sought to determine the prognostic impact of acute decompensated heart failure (ADHF) in patients with heart failure with mildly reduced ejection fraction (HFmrEF). ADHF is a major complication in patients with heart failure (HF). However, the prognostic impact of ADHF in patients with HFmrEF has not yet been clarified. METHODS AND RESULTS Consecutive patients hospitalized with HFmrEF (i.e. left ventricular ejection fraction 41-49% and signs and/or symptoms of HF) were retrospectively included at one institution from 2016 to 2022. The prognosis of patients with ADHF was compared with those without (i.e. non-ADHF). The primary endpoint was long-term all-cause mortality. Secondary endpoints included in-hospital all-cause mortality and long-term HF-related re-hospitalization. Kaplan-Meier, multivariable Cox proportional regression, and propensity score matched analyses were performed for statistics. Long-term follow-up was set at 30 months. A total of 2184 patients with HFmrEF were included, ADHF was present in 22%. The primary endpoint was higher in ADHF compared to non-ADHF patients with HFmrEF [50% vs. 26%; hazard ratio (HR) = 2.269; 95% confidence interval (CI) 1.939-2.656; P = 0.001]. Accordingly, the secondary endpoint of long-term HF-related re-hospitalization was significantly higher (27% vs. 10%; HR = 3.250; 95% CI 2.565-4.118; P = 0.001). A history of previous ADHF before the index hospitalization was associated with higher rates of long-term HF-related re-hospitalization (42% vs. 23%; HR = 2.073; 95% CI 1.420-3.027; P = 0.001), but not with long-term all-cause mortality (P = 0.264). CONCLUSION ADHF is a common finding in patients with HFmrEF associated with an adverse impact on long-term prognosis.
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Affiliation(s)
- Alexander Schmitt
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Tobias Schupp
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Marielen Reinhardt
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Noah Abel
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Felix Lau
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Jan Forner
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Mohamed Ayoub
- Division of Cardiology and Angiology, Heart Centre University of Bochum, Bad Oeynhausen 32545, Germany
| | - Kambis Mashayekhi
- Department of Internal Medicine and Cardiology, MediClin Heart Centre Lahr, Lahr, Germany
| | - Christel Weiß
- Faculty of Medicine Mannheim, Institute of Biomathematics and Medical Statistics, University Medical Centre, Mannheim, Germany
| | - Ibrahim Akin
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
| | - Michael Behnes
- First Department of Medicine, Section for Invasive Cardiology, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, Mannheim 68167, Germany
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Schupp T, Abumayyaleh M, Weidner K, Lau F, Reinhardt M, Abel N, Schmitt A, Forner J, Ayasse N, Bertsch T, Akin M, Akin I, Behnes M. Prognostic Implications of Type 2 Diabetes Mellitus in Heart Failure with Mildly Reduced Ejection Fraction. J Clin Med 2024; 13:742. [PMID: 38337436 PMCID: PMC10856313 DOI: 10.3390/jcm13030742] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/10/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
BACKGROUND Data regarding the characterization and outcomes of diabetics with heart failure with a mildly reduced ejection fraction (HFmrEF) is scarce. This study investigates the prevalence and prognostic impact of type 2 diabetes in patients with HFmrEF. METHODS Consecutive patients with HFmrEF (i.e., left ventricular ejection fraction 41-49% and signs and/or symptoms of HF) were retrospectively included at one institution from 2016 to 2022. Patients with type 2 diabetes (dia-betics) were compared to patients without (i.e., non-diabetics). The primary endpoint was all-cause mortality at 30 months. Statistical analyses included Kaplan-Meier, multivariable Cox regression analyses and propensity score matching. RESULTS A total of 2169 patients with HFmrEF were included. The overall prevalence of type 2 diabetes was 36%. Diabetics had an increased risk of 30-months all-cause mortality (35.8% vs. 28.6%; HR = 1.273; 95% CI 1.092-1.483; p = 0.002), which was confirmed after multivariable adjustment (HR = 1.234; 95% CI 1.030-1.479; p = 0.022) and propensity score matching (HR = 1.265; 95% CI 1.018-1.572; p = 0.034). Diabetics had a higher risk of HF-related rehospitalization (17.8% vs. 10.7%; HR = 1.714; 95% CI 1.355-2.169; p = 0.001). Finally, the risk of all-cause mortality was increased in diabetics treated with insulin (40.7% vs. 33.1%; log-rank p = 0.029), whereas other anti-diabetic pharmacotherapies had no prognostic impact in HFmrEF. CONCLUSIONS Type 2 diabetes is common and independently associated with adverse long-term prognosis in patients with HFmrEF.
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Affiliation(s)
- Tobias Schupp
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Mohammad Abumayyaleh
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Kathrin Weidner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Felix Lau
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Marielen Reinhardt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Noah Abel
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Alexander Schmitt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Jan Forner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Niklas Ayasse
- Vth Department of Medicine (Nephrology, Hypertensiology, Endocrinology, Rheumatology, Pneumology), Transplant Center Mannheim, Medical Faculty Mannheim, University Hospital Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Thomas Bertsch
- Institute of Clinical Chemistry, Laboratory Medicine and Transfusion Medicine, Nuremberg General Hospital, Paracelsus Medical University, 90419 Nuremberg, Germany
| | - Muharrem Akin
- Department of Cardiology, St. Josef-Hospital, Ruhr-Universität Bochum, 44791 Bochum, Germany
| | - Ibrahim Akin
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Michael Behnes
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
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8
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Abel N, Schupp T, Abumayyaleh M, Schmitt A, Reinhardt M, Lau F, Ayoub M, Mashayekhi K, Akin M, Rusnak J, Akin I, Behnes M. Prognostic Implications of Septal Hypertrophy in Patients with Heart Failure with Mildly Reduced Ejection Fraction. J Clin Med 2024; 13:523. [PMID: 38256657 PMCID: PMC10816095 DOI: 10.3390/jcm13020523] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/02/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Cardiac remodeling is frequently observed in patients with heart failure (HF) and serves as an indicator of disease progression and severity. Septal hypertrophy represents an aspect of remodeling that can be easily assessed via an echocardiographic measurement of the interventricular septal end diastole (IVSd), but it has not been evaluated for its prognostic value, particularly in patients with heart failure with mildly reduced ejection fraction (HFmrEF). We retrospectively included 1881 consecutive patients hospitalized with HFmrEF (i.e., a left ventricular ejection fraction of 41-49% and signs and/or symptoms of HF) at one institution during a study period from 2016 to 2022. Septal hypertrophy, defined as an IVSd > 12 mm, was prevalent in 34% of the HFmrEF patients. Although septal hypertrophy was not associated with all-cause mortality at 30 months (median follow-up) (HR = 1.067; 95% CI: 0.898-1.267; p = 0.460), it was associated with an increased risk of hospitalization due to worsening HF at 30 months (HR = 1.303; 95% CI: 1.008-1.685; p = 0.044), which was confirmed even after multivariable adjustment (HR = 1.340; 95% CI: 1.002-1.792; p = 0.049) and propensity score matching (HR = 1.399; 95% CI: 1.002-1.951; p = 0.048). Although septal hypertrophy was not associated with the risk of all-cause mortality in patients with HFmrEF, it was identified as an independent predictor of long-term HF-related rehospitalization.
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Affiliation(s)
- Noah Abel
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Tobias Schupp
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Mohammad Abumayyaleh
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Alexander Schmitt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Marielen Reinhardt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Felix Lau
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Mohamed Ayoub
- Division of Cardiology and Angiology, Heart Center University of Bochum, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Kambis Mashayekhi
- Department of Internal Medicine and Cardiology, MediClin Heart Centre Lahr, Hohbergweg 2, 77933 Lahr, Germany
| | - Muharrem Akin
- Department of Cardiology, St. Josef-Hospital, Ruhr-Universität Bochum, 44791 Bochum, Germany
| | - Jonas Rusnak
- Department of Cardiology, Angiology and Pneumology, University Hospital Heidelberg, Im Neuenheimer Feld 672, 69120 Heidelberg, Germany
| | - Ibrahim Akin
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
| | - Michael Behnes
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany (T.S.)
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9
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Schupp T, Abumayyaleh M, Weidner K, Lau F, Schmitt A, Reinhardt M, Abel N, Forner J, Akin M, Ayoub M, Mashayekhi K, Bertsch T, Akin I, Behnes M. Diagnostic and Prognostic Value of Aminoterminal Prohormone of Brain Natriuretic Peptide in Heart Failure with Mildly Reduced Ejection Fraction Stratified by the Degree of Renal Dysfunction. J Clin Med 2024; 13:489. [PMID: 38256622 PMCID: PMC10816452 DOI: 10.3390/jcm13020489] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 12/31/2023] [Accepted: 01/07/2024] [Indexed: 01/24/2024] Open
Abstract
Limited data concerning the diagnostic and prognostic value of blood-derived biomarkers in heart failure with mildly reduced ejection fraction (HFmrEF) is available. This study investigates the diagnostic and prognostic value of aminoterminal prohormone of brain natriuretic peptide (NT-proBNP) in patients with HFmrEF, stratified by the estimated glomerular filtration rate (eGFR). Consecutive patients with HFmrEF were retrospectively included at one institution from 2016 to 2022. First, the diagnostic value of NT-proBNP for acute decompensated heart failure (ADHF) was tested. Thereafter, the prognostic value of NT-proBNP levels was tested for 30-months all-cause mortality in patients with ADHF. From a total of 755 patients hospitalized with HFmrEF, the rate of ADHF was 42%. Patients with ADHF revealed higher NT-proBNP levels compared to patients without (median 5394 pg/mL vs. 1655 pg/mL; p = 0.001). NT-proBNP was able to discriminate ADHF with an area under the curve (AUC) of 0.777 (p = 0.001), with the highest AUC in patients with eGFR ≥ 60 mL/min (AUC = 0.800; p = 0.001), and no diagnostic value was seen in eGFR < 30 mL/min (AUC = 0.576; p = 0.210). Patients with NT-proBNP levels > 3946 pg/mL were associated with higher rates of all-cause mortality at 30 months (57.7% vs. 34.4%; HR = 2.036; 95% CI 1.423-2.912; p = 0.001), even after multivariable adjustment (HR = 1.712; 95% CI 1.166-2.512; p = 0.006). In conclusion, increasing NT-proBNP levels predicted the risk of ADHF and all-cause mortality in patients with HFmrEF and preserved renal function; however, NT-proBNP levels were not predictive in patients with HFmrEF and eGFR < 30 mL/min.
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Affiliation(s)
- Tobias Schupp
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Mohammad Abumayyaleh
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Kathrin Weidner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Felix Lau
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Alexander Schmitt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Marielen Reinhardt
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Noah Abel
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Jan Forner
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Muharrem Akin
- Department of Cardiology, St. Josef-Hospital, Ruhr-Universität Bochum, 44791 Bochum, Germany
| | - Mohamed Ayoub
- Division of Cardiology and Angiology, Heart Center University of Bochum, 32545 Bad Oeynhausen, Germany
| | - Kambis Mashayekhi
- Department of Internal Medicine and Cardiology, Mediclin Heart Centre Lahr, 77933 Lahr, Germany
| | - Thomas Bertsch
- Institute of Clinical Chemistry, Laboratory Medicine and Transfusion Medicine, Nuremberg General Hospital, Paracelsus Medical University, 90419 Nuremberg, Germany
| | - Ibrahim Akin
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Michael Behnes
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
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10
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Kunze K, Gossler C, Reinhardt M, Arnold M, Schwenzer F, Helke C, Reuter D, Keppeler D, Moser T, Schwarz UT. Multichannel laser diode to polymer waveguide array coupling with a double-aspheric lens. Appl Opt 2023; 62:9353-9360. [PMID: 38108707 DOI: 10.1364/ao.505167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/14/2023] [Indexed: 12/19/2023]
Abstract
An optical system for multichannel coupling of laser arrays to polymer waveguide array probes with a single biconvex lens is developed. The developed cylindrical module with 13 mm and 20 mm in diameter and length, respectively, enables coupling of eight individual optical channels using an aspheric lens. Specific coupling with crosstalk below -13d B for each channel and quasi-uniform coupling over all channels is achieved for a waveguide array with 100 µm lateral facet pitch at the incoupling site. The polymer waveguide technology allows for tapering of the lateral waveguide pitch to 25 µm toward the tip of the flexible waveguide array. SU-8 and PMMA are used as the waveguide core and cladding, respectively. The optical coupling module is designed as a prototype for preclinical evaluation of optical neural stimulators.
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11
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Huart L, Fournier M, Dupuy R, Vacheresse R, Reinhardt M, Cubaynes D, Céolin D, Hervé du Penhoat MA, Renault JP, Guigner JM, Kumar A, Lutet-Toti B, Bozek J, Ismail I, Journel L, Lablanquie P, Penent F, Nicolas C, Palaudoux J. First (e,e) coincidence measurements on solvated sodium benzoate in water using a magnetic bottle time-of-flight spectrometer. Phys Chem Chem Phys 2023; 25:11085-11092. [PMID: 36484473 DOI: 10.1039/d2cp02982k] [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: 12/12/2022]
Abstract
Sodium benzoate molecules solvated in water are studied using coincidence electron spectroscopy coupled with a liquid microjet device.
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Affiliation(s)
- L. Huart
- Synchrotron Soleil, 91192 Saint Aubin, France
- Université Paris-Saclay, CEA, CNRS, NIMBE, CEA Saclay, 91191 Gif-sur-Yvette, France
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, UMR CNRS 7590, MHNH, 75252 Paris, France
| | - M. Fournier
- Synchrotron Soleil, 91192 Saint Aubin, France
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - R. Dupuy
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - R. Vacheresse
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - M. Reinhardt
- Nano and Molecular Systems Research Unit, University of Oulu, PO Box 3000, FI-90014, Finland
| | - D. Cubaynes
- ISMO, CNRS UMR 8214, Université Paris Sud, bâtiment 350, F-91405, Orsay, France
| | - D. Céolin
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - M. A. Hervé du Penhoat
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, UMR CNRS 7590, MHNH, 75252 Paris, France
| | - J. P. Renault
- Université Paris-Saclay, CEA, CNRS, NIMBE, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - J.-M. Guigner
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, UMR CNRS 7590, MHNH, 75252 Paris, France
| | - A. Kumar
- Synchrotron Soleil, 91192 Saint Aubin, France
| | - B. Lutet-Toti
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - J. Bozek
- Synchrotron Soleil, 91192 Saint Aubin, France
| | - I. Ismail
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - L. Journel
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - P. Lablanquie
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - F. Penent
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
| | - C. Nicolas
- Synchrotron Soleil, 91192 Saint Aubin, France
| | - J. Palaudoux
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique – Matière et Rayonnement, LCP-MR, F-75005 Paris Cedex 05, France
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Ünsal B, Demetrovics Z, Reinhardt M. Stronger together: Community participation, structural stigma, and depressive symptoms of sexual and gender minority individuals living across 28 European countries. Eur J Public Health 2022. [PMCID: PMC9594195 DOI: 10.1093/eurpub/ckac129.194] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Background Although previous studies demonstrated that structural stigma (i.e., discriminatory state laws, public policies, and attitudes) predicts adverse mental health outcomes among sexual and gender minority (SGM) populations, less is known how protective factors interact with structural stigma. Thus, we aimed to examine the associations between structural stigma, community participation, and depressive symptoms in a large sample of SGM adults. Methods Discriminatory laws, policies, and attitudes affecting SGM people were assessed to measure each country's structural stigma levels (i.e., sexual and gender). Data from the 2019 EU-LGBTI-II-Survey assessing community participation levels and depressive symptoms of sexual minority men (n = 62.825), women (n = 38.912), and gender minority adults (n = 15.801) in 28 European countries were analyzed by using multilevel models. Results The results demonstrated that structural stigma was positively, and community participation was negatively associated with depressive symptoms of sexual minority men (β = .147, p < .001; β = -.020, p < .05), women (β = .149, p < .01; β = −.040, p < .01), and gender minority adults (β = .085, p < .05; β = -.088, p < .001), respectively. Unlike sexual minority women and gender minority adults, for sexual minority men, a statistically significant interaction was found (β = .018, p < .05) such that participating to the community predicted lower depressive symptoms only in lower-stigma countries. Conclusions The results highlight the need for changes in discriminatory laws, social policies, and negative attitudes that impact depressive symptoms of SGM individuals. Although community participation protects individuals from depression, these findings suggest that sexual minority men in higher-stigma countries benefit less from community participation. Thus, interventions aiming to increase SGM individuals’ community participation should consider structural factors and gender differences.
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Affiliation(s)
- B Ünsal
- Institute of Psychology, ELTE Eötvös Loránd University , Budapest, Hungary
| | - Z Demetrovics
- Institute of Psychology, ELTE Eötvös Loránd University , Budapest, Hungary
| | - M Reinhardt
- Institute of Psychology, ELTE Eötvös Loránd University , Budapest, Hungary
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Klinke N, Reinhardt M, Ratnavadivel S, Harten H, Malmendal A, Milting H, Paululat A. An invertebrate model for TMEM43-induced arrhythmogenic right ventricular cardiomyopathy (ARVC) type 5. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.126] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): DFG
Objectives
TMEM43 encodes for a transmembrane protein located in the ER membrane and the nuclear rim. TMEM43 has predicted four transmembrane domains. The missense variant TMEM43 p.S358L is fully penetrant in males and associated with arrhythmogenic right ventricular cardiomyopathy (ARVC) type 5. Even though, TMEM43 is a phyllogenetically conserved protein throughout different species, little is known on the molecular mechanism of the mutation. TMEM43 is highly homologous to the single CG8111 gene in Drosophila melanogaster. The clincal relevant amino acid serine at position p358 is situated in the third transmembrane domain, the same applies to the corresponding amino acid p.S333L in the Drosophila homologue. Here, we established the first invertebrate model to study the pathophysiological effects of the human variant in the Drosophila homologue CG8111.
Methods
To investigate the effect of this missense mutation in flies, we introduced the variant CG8111 p.S333L in Drosophila and overexpressed the mutant variant CG8111p.S333L in transgenic flies, either ubiquitously or in a tissue specific manner. Cardiac specific physiological effects of the mutant variant were examined by Semi-automatic Optical Heartbeat Analysis (SOHA) for heart rate, systolic and diastolic interval, fractional shortening and arrhythmicity index. Mutant and wildtype flies were further compared by mass-spectrometry for differentially regulated proteins. Metabolites were analysed by NMR accordingly.
Results
Our studies showed that in comparison to the wild type the ubiquitously overexpressed variant leads to lethal effects at pupal stages. Individuals died from reduced food uptake and excessive lipid droplet accumulation in adipocytes. CG8111p.S333L animals up-regulate proteins, involved in fatty acid metabolism pathways. Metabolomic data revealed increased amounts of fatty acids accumulation in mutant versus wild-type animals. Furthermore, heart specific overexpression of CG8111p.S333L was associated with arrhythmias in five week old male flies.
Conclusions
CG8111p.S333L overexpression is a lethal genotype in Drosophila. Our data suggest a metabolic dysfunction associated with the mutant form of CG8111p.S333L, which shares pathophysiological characteristics of the human condition in TMEM43 p.S358L carriers.
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Affiliation(s)
- N Klinke
- University of Osnabrueck, Zoology and Developmental Genetics , Osnabrueck , Germany
| | - M Reinhardt
- University of Osnabrueck, Zoology and Developmental Genetics , Osnabrueck , Germany
| | - S Ratnavadivel
- Herz- und Diabeteszentrum NRW, Ruhr-Universitaet Bochum, Erich und Hanna Klessman Institut , Bad Oeynhausen , Germany
| | - H Harten
- University of Osnabrueck, Zoology and Developmental Genetics , Osnabrueck , Germany
| | - A Malmendal
- Rosklide University, Science and Environment , Rosklide , Denmark
| | - H Milting
- Herz- und Diabeteszentrum NRW, Ruhr-Universitaet Bochum, Erich und Hanna Klessman Institut , Bad Oeynhausen , Germany
| | - A Paululat
- University of Osnabrueck, Zoology and Developmental Genetics , Osnabrueck , Germany
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14
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Seider D, Reinhardt M, Zajonz D, Voigt P, Kahn T, Moche M. [Analysis of the quality of life of patients with osteoid osteoma before and after radiofrequency ablation treatment]. Chirurg 2019; 90:851-857. [PMID: 30783725 DOI: 10.1007/s00104-019-0818-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND The aim of this study was to investigate the effectiveness of the treatment of osteoid osteomas (OO) by radiofrequency ablation (RFA). In particular, the recurrence rate and the improvement in the quality of life as assessed by the reduction of pain intensity were evaluated. METHODS Retrospective analysis of 26 patients after RFA of an OO and prospective analysis of 14 patients using a self-developed quality of life questionnaire. The questionnaire, the electronic patient file and the histopathological findings were processed. RESULTS An average of 22 months passed between the first onset of complaints and the causative treatment by RFA. After RFA, there was a significant reduction in pain symptoms and thus an increase in the quality of life. These results confirm that RFA from OO is a safe and efficient treatment procedure. DISCUSSION In order to avoid long-term conservative treatment attempts and to reduce effects on the musculoskeletal system, a timely RFA of OO should be performed after diagnosis.
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Affiliation(s)
- D Seider
- Medizinische Fakultät der Universität Leipzig, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103, Leipzig, Deutschland.
| | - M Reinhardt
- Medizinische Fakultät der Universität Leipzig, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103, Leipzig, Deutschland
| | - D Zajonz
- Klinik und Poliklinik für Orthopädie, Unfallchirurgie und Plastische Chirurgie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103, Leipzig, Deutschland
| | - P Voigt
- Medizinische Fakultät der Universität Leipzig, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103, Leipzig, Deutschland
| | - T Kahn
- Medizinische Fakultät der Universität Leipzig, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103, Leipzig, Deutschland
| | - M Moche
- Medizinische Fakultät der Universität Leipzig, Klinik und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103, Leipzig, Deutschland
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Gerdes S, Pinter A, Papavassilis C, Reinhardt M. Effects of secukinumab on metabolic and liver parameters in plaque psoriasis patients. J Eur Acad Dermatol Venereol 2019; 34:533-541. [PMID: 31599476 PMCID: PMC7065121 DOI: 10.1111/jdv.16004] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [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: 08/15/2018] [Accepted: 09/13/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Psoriasis is associated with metabolic, liver and cardiovascular comorbidity. Secukinumab, a fully human monoclonal antibody that selectively neutralizes interleukin-17A, has shown significant and sustained efficacy in the treatment of moderate to severe psoriasis. OBJECTIVES This was an exploratory post hoc analysis of pooled data from three phase 3 studies in plaque psoriasis patient populations. The objective was to show the course of metabolic and liver parameters under secukinumab, etanercept or placebo treatment over time. A further objective was to assess the impact of selected comorbidities and metabolic characteristics on high-sensitivity C-reactive protein (hs-CRP), as a surrogate marker of systemic inflammation. METHODS Data from the phase 3 randomized controlled trials [FIXTURE (NCT01358578), ERASURE (NCT01365455) and SCULPTURE (NCT01406938); n = 3010] were included in this analysis. Patients were treated with secukinumab 150 mg or 300 mg, placebo or etanercept 50 mg (FIXTURE only) as active comparator. A set of metabolic and liver parameters was longitudinally assessed over 52 weeks. Multivariate regression analyses assessed the impact of selected comorbidities and metabolic characteristics on hs-CRP levels at baseline and under treatment. RESULTS Secukinumab treatment reduced hs-CRP levels. Body weight and uric acid levels tended to decrease over 52 weeks with secukinumab. Secukinumab showed a neutral effect on fasting plasma glucose, lipid parameters and liver enzymes. Psoriatic arthritis, metabolic syndrome, obesity, impaired glucose metabolism, and hyperuricemia were each associated with increased hs-CRP levels at baseline. Concomitant obesity attenuated the decline in hs-CRP under treatment. CONCLUSIONS These analyses suggest neutral to favourable long-term trends in metabolic and liver parameters under secukinumab treatment. Metabolic comorbidities were associated with increased hs-CRP levels, reflecting the role of systemic inflammatory processes in their pathophysiology.
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Affiliation(s)
- S Gerdes
- Psoriasis-Center, Department of Dermatology, University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - A Pinter
- Department of Dermatology, Venereology and Allergology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | | | - M Reinhardt
- Novartis Pharma AG, Basel, Switzerland.,Novartis Pharma GmbH, Nürnberg, Germany
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Reinhardt M, Cushman TR, Thearle MS, Krakoff J. Epicardial adipose tissue is a predictor of decreased kidney function and coronary artery calcification in youth- and early adult onset type 2 diabetes mellitus. J Endocrinol Invest 2019; 42:979-986. [PMID: 30674009 DOI: 10.1007/s40618-019-1011-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 01/16/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE To examine the association of epicardial and pericardial fat volume (EFV, PFV) with cardiovascular risk factors and kidney function in Native Americans of southwestern heritage with youth and early adult onset type 2 diabetes mellitus (T2DM) versus healthy controls. METHODS Using computed tomography, we quantified EFV and PFV in 149 Native Americans (92 women, 57 men), 95 of which had T2DM (38 diagnosed prior to age 20 years). Duration of T2DM, mean carotid arterial mass (AM), coronary artery calcification (CAC), IL-6, and estimated glomerular filtration rate eGFRcr(CKD-EPI) were measured. RESULTS EFV and PFV were associated with BMI (r = 0.37, p < 0.0001; r = 0.26, p = 0.001) and did not differ between onset age-groups and controls (p > 0.05). EFV was associated with AM only in controls (r = 0.51, p < 0.0001). After adjustment for BMI, T2DM duration, HbA1C, age, and sex, EFV was a predictor of CAC and IL-6 concentrations in early adult onset T2DM (β = 0.05 ± 0.02 cm3, p = 0.03; β = 0.05 ± 0.01 pg/ml/cm3, p = 0.002). EFV and PFV were independent predictors of reduced eGFRcr(CKD-EPI) in the youth onset T2DM group (β = -0.3 ± 0.08 ml/min/cm3, p = 0.001; β = -0.25 ± 0.05 ml/min/cm3, p < 0.0001). CONCLUSIONS Epicardial fat volume may be a risk factor for heart disease in individuals with early adult onset T2DM and a predictor of decreased kidney function in individuals with youth onset T2DM.
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Affiliation(s)
- M Reinhardt
- Obesity and Diabetes Clinical Research Section, Department of Health and Human Services, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 4212 N. 16th Street, Phoenix, AZ, 85016, USA.
- Department of Diagnostic and Interventional Radiology, University of Leipzig Medical Center, Liebigstraße 20, 04103, Leipzig, Germany.
| | - T R Cushman
- Obesity and Diabetes Clinical Research Section, Department of Health and Human Services, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 4212 N. 16th Street, Phoenix, AZ, 85016, USA
| | - M S Thearle
- Obesity and Diabetes Clinical Research Section, Department of Health and Human Services, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 4212 N. 16th Street, Phoenix, AZ, 85016, USA
| | - J Krakoff
- Obesity and Diabetes Clinical Research Section, Department of Health and Human Services, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, 4212 N. 16th Street, Phoenix, AZ, 85016, USA
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Abstract
Background: Adiponectin is an adipocyte-secreted protein potentially relevant in the context of cardiometabolic comorbidity of psoriasis patients.Objective: This post-hoc analysis aimed to assess the impact of obesity, metabolic syndrome, psoriasis severity and treatment with secukinumab/etanercept on adiponectin.Methods: Three phase III trials in moderate to severe plaque psoriasis were included. Correlations of Psoriasis Area and Severity Index (PASI), body mass index (BMI), and associated comorbidity with adiponectin levels as well as the impact of secukinumab, etanercept, and placebo were analyzed.Results: Data of 3010 patients were included of whom 71.2% had a BMI >25. Adiponectin levels were significantly higher in patients with lower BMI (r = -0.23; p < .0001) and in patients without metabolic syndrome compared to patients with higher BMI and with metabolic syndrome. PASI score was negatively associated with adiponectin levels (r = -0.065; p = .0004). However, the correlation was extremely weak and thus clinically irrelevant. During treatment with secukinumab or etanercept over 52 weeks adiponectin levels remained stable.Conclusion: Metabolic syndrome and BMI are key determinants of adiponectin levels in psoriasis patients. Psoriasis severity and anti-psoriatic treatment had no relevant impact on adiponectin levels.
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Affiliation(s)
- S Gerdes
- Psoriasis-Center, Department of Dermatology, University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - A Pinter
- Department of Dermatology, Venereology and Allergology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - M Biermann
- Novartis Pharma GmbH, Nuernberg, Germany
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Reinhardt M, Duda JP, Blumenberg M, Ostertag-Henning C, Reitner J, Heim C, Thiel V. The taphonomic fate of isorenieratene in Lower Jurassic shales-controlled by iron? Geobiology 2018; 16:237-251. [PMID: 29569335 DOI: 10.1111/gbi.12284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 02/12/2018] [Indexed: 06/08/2023]
Abstract
Fossil derivatives of isorenieratene, an accessory pigment in brown-colored green sulfur bacteria, are often used as tracers for photic zone anoxia through Earth's history, but their diagenetic behavior is still incompletely understood. Here, we assess the preservation of isorenieratene derivatives in organic-rich shales (1.5-8.4 wt.% TOC) from two Lower Jurassic anoxic systems (Bächental oil shale, Tyrol, Austria; Posidonia Shale, Baden-Württemberg, Germany). Bitumens and kerogens were investigated using catalytic hydropyrolysis (HyPy), closed-system hydrous pyrolysis (in gold capsules), gas chromatography-mass spectrometry (GC-MS) and gas chromatography combustion isotope ratio-mass spectrometry (GC-C-IRMS). Petrography and biomarkers indicate a syngenetic relationship between bitumens and kerogens. All bitumens contain abundant isorenieratane, diverse complex aromatized isorenieratene derivatives, and a pseudohomologous series of 2,3,6-trimethyl aryl isoprenoids. In contrast, HyPy and mild closed-system hydrous pyrolysis of the kerogens yielded only minor amounts of these compounds. Given the overall low maturity of the organic matter (below oil window), it appears that isorenieratene and its abundant derivatives from the bitumen had not been incorporated into the kerogens. Accordingly, sulfur cross-linking, the key mechanism for sequestration of functionalized lipids into kerogens in anoxic systems, was not effective in the Jurassic environments studied. We explain this by (i) early cyclization/aromatization and (ii) hydrogenation reactions that have prevented effective sulfurization. In addition, (iii) sulfide was locally removed via anoxygenic photosynthesis and efficiently trapped by the reaction with sedimentary iron, as further indicated by elevated iron contents (4.0-8.7 wt.%) and the presence of abundant pyrite aggregates in the rock matrix. Although the combined processes have hampered the kerogen incorporation of isorenieratene and its derivatives, they may have promoted the long-term preservation of these biomarkers in the bitumen fraction via early defunctionalization. This particular taphonomy of aromatic carotenoids has to be considered in studies of anoxic iron-rich environments (e.g., the Proterozoic ocean).
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Affiliation(s)
- M Reinhardt
- Department of Geobiology, Geoscience Centre, University of Göttingen, Göttingen, Germany
- Planets and Comets, Max Planck Institute for Solar System Research, Göttingen, Germany
| | - J-P Duda
- Department of Geobiology, Geoscience Centre, University of Göttingen, Göttingen, Germany
- 'Origin of Life' Group, Göttingen Academy of Sciences and Humanities, Göttingen, Germany
| | - M Blumenberg
- Federal Institute for Geosciences and Natural Resources, Hannover, Germany
| | - C Ostertag-Henning
- Federal Institute for Geosciences and Natural Resources, Hannover, Germany
| | - J Reitner
- Department of Geobiology, Geoscience Centre, University of Göttingen, Göttingen, Germany
- 'Origin of Life' Group, Göttingen Academy of Sciences and Humanities, Göttingen, Germany
| | - C Heim
- Department of Geobiology, Geoscience Centre, University of Göttingen, Göttingen, Germany
| | - V Thiel
- Department of Geobiology, Geoscience Centre, University of Göttingen, Göttingen, Germany
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Costa PF, Reinhardt M, Poppe B. OCCUPATIONAL EXPOSURE FROM F-18-FDG PET/CT: IMPLEMENTATION TO ROUTINE CLINICAL PRACTICE. Radiat Prot Dosimetry 2018; 179:291-298. [PMID: 29253239 DOI: 10.1093/rpd/ncx276] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
The purpose of this study was to assess the occupational radiation exposure arising from positron emission tomography combined with X-ray computed tomography (PET/CT) procedures. From 2009 through the end of 2014, in a team of six technologists, personal dosimetry was performed using electronic personal dosemeters and film badge dosemeters. The technologists registered the separate exposure after each PET/CT operational step, which included radiopharmaceutical arrival, dispensing in individual syringes, injection and patient positioning.From the total of 3024 PET/CT procedures, 2142 were available for analysis. The personal dose equivalent for the technologists performing PET/CT ranged from 11.5 nSv/MBq to 23.8 nSv/MBq. Whole-body radiation dose originated mainly from radiopharmaceutical injection (41.5%) and patient positioning (51.1%). The sources of occupational exposure were successfully identified for PET/CT procedures. Record keeping using on-site occupational dosimetry is a useful tool for exposure optimisation.
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Affiliation(s)
- P Fragoso Costa
- Clinic for Nuclear Medicine, Pius-Hospital, Medical Campus, Carl von Ossietzky University, Oldenburg, Germany
- University Clinic for Medical Radiation Physics, Pius-Hospital, Medical Campus, Carl von Ossietzky University, Oldenburg, Germany
| | - M Reinhardt
- Clinic for Nuclear Medicine, Pius-Hospital, Medical Campus, Carl von Ossietzky University, Oldenburg, Germany
| | - B Poppe
- University Clinic for Medical Radiation Physics, Pius-Hospital, Medical Campus, Carl von Ossietzky University, Oldenburg, Germany
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Heintze SD, Monreal D, Reinhardt M, Eser A, Peschke A, Reinshagen J, Rousson V. Fatigue resistance of all-ceramic fixed partial dentures - Fatigue tests and finite element analysis. Dent Mater 2018; 34:494-507. [PMID: 29395474 DOI: 10.1016/j.dental.2017.12.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 04/07/2017] [Revised: 12/11/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To estimate the fatigue resistance of a new translucent zirconia material in comparison to lithium disilicate for 3-unit fixed partial dentures (FPDs). METHODS Eighteen 3-unit FPDs (replacement of first upper molar) with a connector size of 4mm×4mm were dry milled with a five-axis milling machine (Zenotec Select, Wieland, Germany) using discs made of a new translucent zirconia material (IPS e.max ZirCAD MT, Ivoclar Vivadent). Another 9 FPDs with a reduced connector size (3mm×4mm) were milled. The zirconia FPDs were sintered at 1500°C. For a comparison, 9 FPDs were made of IPS e.max Press, using the same dimensions. These IPS e.max Press FPDs were ground from a wax disc (Wieland), invested and pressed at 920°C. All FPDs were glazed twice. The FPDs were adhesively luted to PMMA dies with Multilink Automix. Dynamic cyclic loading was carried out on the molar pontic using Dyna-Mess testing machines (Stolberg, Germany) with 2×106 cycles at 2Hz in water (37°C). Two specimens per group and load were subjected to decreasing load levels (at least 4) until the two specimens no longer showed any failures. Another third specimen was subjected to this load to confirm the result. All the specimens were evaluated under a stereo microscope (20× magnification). The number of cycles reached before observing a failure, and their dependence on the load and on the material, were modeled, using a Weibull model. This made it possible to estimate the fatigue resistance as the maximum load for which one would observe less than 1% failure after 2×106 cycles. In addition to the experimental study, Finite Element Modeling (FEM) simulations were conducted to predict the force to failure for IPS e.max ZirCAD MT and IPS e.max Press with a reduced cross-section of the connectors. RESULTS The failure mode of the zirconia FPDs was mostly the fracture of the distal connector, whereas the failure mode of the lithium disilicate FPDs observed to be the fracture of the connectors or multiple cracks of the pontic. The fatigue resistance with 1% fracture probability was estimated to be 488N for the IPS e.max ZirCAD MT FPDs (453N for repeated test), 365N for IPS e.max ZirCAD MT FPDs with reduced connector size and 286N for the e.max Press FPDs. All three IPS e.max ZirCAD groups statistically performed significantly better than IPS e.max Press (p<0.001). On the other hand, no significant difference could be established between the two IPS e.max ZirCAD MT3 groups with a 4mm×4mm connector size (p>0.05). The allowable maximum principal stress (σmax) which did not lead to failure during fatigue testing for IPS e.max ZirCAD MT3 was calculated between 208MPa and 223MPa for FPDs with 4mm×4mm connectors for 2×106 cycles. This value could also be verified for the FPDs of the same material with 3mm×4mm connectors. On the other hand fatigue strength in terms of σmax at 2×106 cycles of IPS e.max Press was calculated to be between 78 and 90MPa. SIGNIFICANCE The fatigue resistance of the translucent zirconia 3-unit FPDs was about 60-70% higher than that of the lithium disilicate 3-unit FPDs, which may justify their use for molar replacements, provided that a minimal connector size of 4mm×4mm is observed. Even with a limited number of specimens (n=9) per group it was possible to statistically differentiate between the tested groups.
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Affiliation(s)
- S D Heintze
- R&D, Ivoclar Vivadent AG, Bendererstrasse 2, FL-9494 Schaan, Liechtenstein.
| | - D Monreal
- R&D, Ivoclar Vivadent AG, Bendererstrasse 2, FL-9494 Schaan, Liechtenstein
| | - M Reinhardt
- R&D, Ivoclar Vivadent AG, Bendererstrasse 2, FL-9494 Schaan, Liechtenstein
| | - A Eser
- R&D, Ivoclar Vivadent AG, Bendererstrasse 2, FL-9494 Schaan, Liechtenstein
| | - A Peschke
- R&D, Ivoclar Vivadent AG, Bendererstrasse 2, FL-9494 Schaan, Liechtenstein
| | | | - V Rousson
- University Hospital Lausanne, Biostatistical Division, Institute for Social and Preventive Medicine, Switzerland
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Oexle C, Moser E, Reinhardt M. Erste Ergebnisse der Radioiodtherapie bei multifokaler und disseminierter Autonomie der Schilddrüse unter Verwendung eines TcTUs-adaptierten Dosiskonzepts. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1632319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Zusammenfassung
Ziel: Die Studie untersucht prospektiv die Wirksamkeit eines an den prätherapeutischen 99mTc-Pertechnetat Uptake der Schilddrüse unter Suppression (TcTUs) angepaßten Dosiskonzeptes zur Radioiodtherapie (RIT) bei Patienten mit multifokaler (MFA) und disseminierter Autonomie (DISA). Dieses Konzept berücksichtigt die gesamte Schilddrüse als Zielvolumen und verwendet Herddosen von 150 Gy bis 300 Gy entsprechend dem TcTUs als Maß für das »autonome Volumen« der Schilddrüse. Methoden: Es wurden 75 Patienten (54 Frauen, 21 Männer; Alter 71 ± 9 Jahre) mit MFA oder DISA ausgewertet. Die Therapie wurde bei Normalwerten für fT3 und fT4 und bei endogener Suppression des TSH durchgeführt. Als Herddosen wurden appliziert: bei einem TcTUs zwischen 1,5-2,5% 150 Gy, bei 2,51-3,5% 200 Gy, bei 3,51-4,5% 250 Gy und bei >4,5% 300 Gy. Die Abschätzung der zu applizierenden Aktivität erfolgte mit einer modifizierten Marinelli-Formel. Als Therapieerfolg galt ein TSH >0,5 mU/l und ein Verschwinden der autonomen Areale im Szintigramm bzw. ein posttherapeutischer TcTU <1,5%. Die mittlere Nachbeobachtungszeit betrug 8 ± 4 Monate. Ergebnisse: Die Erfolgsraten betragen im Durchschnitt 92%. Nur in einem Fall kam es zu einer konsekutiven subklinischen Hypothyreose und in einem weiteren Fall trat eine immunogene Hyperthyreose auf. Schlußfolgerung: Die vorliegenden Daten sprechen dafür, daß auch Patienten mit ausgeprägter Autonomie (TcTUs >3,5%) bei einzeitiger Therapie mit einer Erfolgsrate von über 90% mit dem hier vorgestellten Dosiskonzept behandelt werden können. Die Frühhypothyreoserate ist insgesamt sehr niedrig.
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Reinhardt M, Nitzsche E, Moser E, Krause T. Photopenic Lesions in Bone Marrow Scintigraphy Using Technetium-99m Labeled Antigranulocyte Antibody without Known Tumour. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1632197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Aim: The purpose of this study was to elucidate the frequency of photopenic lesions in patients without known tumour disease by using bone marrow scintigraphy with Tc-99m labeled anti-NCA-95. Methods: Whole body immunoscintigraphy (IS) was performed in 141 consecutive patients with fever of unknown origin. The age ranged between 20 and 88 years with a mean age of 57 years. None of the patients had known tumour disease. Scans were evaluated with respect to photopenic lesions and to bone marrow distribution. Results: IS showed bone marrow defects in the axial skeleton in 16 patients (11 %). With the help of the typical scintigraphic defect pattern, the cause of the lesions was clearly identified as degenerative changes in four patients and in one patient as due to prior sternotomy. In the remaining 11 patients the origin of the defects became evident when the case history or additional imaging was consulted. The mean age of these 16 patients was 69 years ranging from 50 to 88 years. There was an age-related frequency of defects. 10% of the patients from 50 to 59 years showed defects, 60-69 years 9%, 70-79 years 30%, and 33% of the patients from 80 to 89 years had defects. IS was not hampered by tracer uptake to liver or spleen in 93 patients. Left caudal ribs were obscured in 48 patients with intense tracer uptake to the spleen. No or markedly reduced tracer uptake was found in caput humeri and caput femori in 94 and 82 patients, respectively. Patchy tracer uptake to the bone marrow of the limbs was seen in 13/62 patients showing marrow expansion in the lower limbs and 14/55 with marrow expansion in the upper limbs. The patchy pattern was asymmetric in 12 of these patients. Conclusion: The results of the present study reveal that using Tc-99m NCA-95, photopenic lesions of the bone marrow are rarely seen in patients without known malignant disease. The occurrence of benign lesions is age-related. The benign cause of the lesion was obvious from location and pattern of the lesion in about 30% of the cases. Evaluation of lesions in the upper and lower limbs may be hindered due to physiological variation of marrow distribution. Nevertheless, IS appears to be well-suited for the detection and localization of bone marrow metastases.
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Poeppel TD, Reinhardt M, Vester EG, Yong M, Mau J, Strauer BE, Vosberg H, Müller HW, Krause BJ. Myocardial perfusion/metabolism mismatch and ventricular arrhythmias in the chronic post infarction state. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1625688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Aim: Ventricular arrhythmias have been shown to originate in the myocardial peri-infarct region due to irregular heterotopic conduction. Hypoperfused but viable myocardium is often localised in those areas and may be involved in the pathogenesis of arrhythmias. We tested the hypothesis that these myocardial perfusion/metabolism mismatches (MM) are significantly associated with ventricular arrhythmias in the chronic post infarction state. Patients, methods: 47 post infarction patients were included in the study. 33 suffered from ventricular arrhythmia whereas 14 did not. All patients underwent 99mTc tetrofosmin SPECT and 18F-FDG PET. A region-of-interest(ROI)-analysis was used to assess viable myocardium based on predefined MM-criteria. Univariate analyses as well as a logistic regression model for the multivariate analysis were carried out. Results: 94% of the arrhythmic patients displayed at least one MM-segment as compared to 64% of the non-arrhythmic patients. MMsegments and arrhythmia showed a statistically significant relation (p = 0.018). The logistic regression model predicted the occurrence or absence of arrhythmia in 85% of all cases. Multivariate analysis gave consistent results, after adjusting for symptomatic chronic heart failure (CHF), aneurysms and age. Conclusion: Our results support the hypothesis that hypoperfused but viable myocardium represents an arrhythmogenic substrate and is a relevant risk factor for developing ventricular arrhythmias following myocardial infarction. Therefore, the detection of MM-segments allows the identification of patients with a higher risk for future cardiac events.
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Ebert A, Reichmann K, Reinhardt M, Palmedo H, Biersack HJ, von Mallek D, Rödel R. Effectiveness of syringe shieldings using radionuclides in radiation synovectomy. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1623906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Aim: The radiation exposure in radiation synovectomy was investigated for technician and therapist using Erbium-169, Rhenium-186 and Yttrium-90 with and without syringe shieldings. Methods: Dose rates were measured in relation to the distance of the syringe containing the radionuclide. Measurements were repeated using syringe shieldings which consist of plastic surrounded by a lead layer. Results: The most relevant radiation exposure arises from Yttrium-90. Using syringe shieldings radiation exposure can be reduced by a factor of thousand. Conclusion: This kind of radiological protection is completely sufficient for the therapist. Concerning the technician preparing the radiopharmaceutics, the limit of the official German dosimetry service (500 mSv) might be exceeded if no special radiological protection is established. Thus, special dosimetry is recommended.
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Abstract
Summary:Aim: The diagnosis of abnormalities of thyroid function is generally based on the measurement of thyroid hormones and TSH in blood. The recommended reference ranges for serum T4 and T3 as well as TSH are quite wide as the result of large differences in thyroid function tests in healthy persons. It has been proven that the individual variation within an individual is small, compared with the variation between individuals. We investigated long term variations of these parameters in patients with and without benign thyroid diseases. Methods: We performed long term follow-up serum determinations of T3, T4, and TSH in a total of 150 patients for a time period of 3 to 13 years. The majority of patients had been put on L-thyroxine. Values of total T3, total T4, free T4 were measured with an almost unmodified test (RIA) over the years. Results: The lowest relative coefficient of variation (<10%) was observed in the group of patients who had been treated with L-thyroxine only. Even for TSH, relatively low cofficients of variation were observed in this group. In the group of patients who had not received any medication, T3 and T4 showed also a variation of 10%. FT4 and TSH revealed a wider range of variation. Even after radioiodine therapy, T3 and T4 showed only a quite small variation, while TSH demonstrated a wide range with a variation of >30%. Conclusion: Our data demonstrate that there are only narrow variations of serum T4 and T3 within individuals with and without thyroid disorders.
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Koc A, Reinhardt M, von Reppert A, Rössle M, Leitenberger W, Gleich M, Weinelt M, Zamponi F, Bargheer M. Grueneisen-approach for the experimental determination of transient spin and phonon energies from ultrafast x-ray diffraction data: gadolinium. J Phys Condens Matter 2017; 29:264001. [PMID: 28557803 DOI: 10.1088/1361-648x/aa7187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We study gadolinium thin films as a model system for ferromagnets with negative thermal expansion. Ultrashort laser pulses heat up the electronic subsystem and we follow the transient strain via ultrafast x-ray diffraction. In terms of a simple Grueneisen approach, the strain is decomposed into two contributions proportional to the thermal energy of spin and phonon subsystems. Our analysis reveals that upon femtosecond laser excitation, phonons and spins can be driven out of thermal equilibrium for several nanoseconds.
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Affiliation(s)
- A Koc
- Helmholtz Zentrum Berlin, Albert-Einstein-Str. 15, 12489 Berlin, Germany
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Weise CM, Piaggi P, Reinhardt M, Chen K, Savage CR, Krakoff J, Pleger B. The obese brain as a heritable phenotype: a combined morphometry and twin study. Int J Obes (Lond) 2016; 41:458-466. [PMID: 27916985 PMCID: PMC5402354 DOI: 10.1038/ijo.2016.222] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/01/2016] [Accepted: 11/22/2016] [Indexed: 12/17/2022]
Abstract
Background Body weight and adiposity are heritable traits. To date it remains unknown whether obesity-associated brain structural alterations are under a similar level of genetic control. Methods For this study we utilized magnetic resonance imaging (MRI) data from the Human Connectome Project. Voxel based morphometry (VBM) was used to investigate associations between body mass index (BMI) and regional gray matter volume (GMV) in a sample of 875 young adults with a wide BMI range (386m/489f; age 28.8 ± 3.7y; BMI 26.6 ± 5.3 kg*m-2), that included 86 pairs of monozygotic twins and 82 pairs of dizygotic twins. Twin data were analyzed by applying the additive genetic, common environmental and residual effects (ACE) model to determine heritability of brain regions that were associated with BMI. Results We observed positive associations between BMI and GMV in the ventromedial prefrontal cortex and the right cerebellum and widespread negative associations within the prefrontal cortex, cerebellum, temporal lobes and distinct subcortical structures. Varying degrees of heritability were found for BMI-associated brain regions, with highest heritability estimates for cerebellar GMV and subcortical structures. Conclusions These data indicate that brain regions associated with obesity are subject to differing levels of genetic control and environmental influences. Specific brain regions with high heritability might represent an inherent vulnerability factor for obesity.
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Affiliation(s)
- C M Weise
- Department of Neurology, University of Leipzig, Leipzig, Germany
| | - P Piaggi
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - M Reinhardt
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Leipzig, Germany
| | - K Chen
- Banner Alzheimer's Institute, Phoenix, AZ, USA
| | - C R Savage
- Banner Alzheimer's Institute, Phoenix, AZ, USA
| | - J Krakoff
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - B Pleger
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.,Department of Neurology, BG University Clinic Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
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Iurchuk V, Schick D, Bran J, Colson D, Forget A, Halley D, Koc A, Reinhardt M, Kwamen C, Morley NA, Bargheer M, Viret M, Gumeniuk R, Schmerber G, Doudin B, Kundys B. Optical Writing of Magnetic Properties by Remanent Photostriction. Phys Rev Lett 2016; 117:107403. [PMID: 27636494 DOI: 10.1103/physrevlett.117.107403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Indexed: 06/06/2023]
Abstract
We present an optically induced remanent photostriction in BiFeO_{3}, resulting from the photovoltaic effect, which is used to modify the ferromagnetism of Ni film in a hybrid BiFeO_{3}/Ni structure. The 75% change in coercivity in the Ni film is achieved via optical and nonvolatile control. This photoferromagnetic effect can be reversed by static or ac electric depolarization of BiFeO_{3}. Hence, the strain dependent changes in magnetic properties are written optically, and erased electrically. Light-mediated straintronics is therefore a possible approach for low-power multistate control of magnetic elements relevant for memory and spintronic applications.
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Affiliation(s)
- V Iurchuk
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-UdS 23 rue du Loess, 67034 Cedex 2, Strasbourg, France
| | - D Schick
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - J Bran
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-UdS 23 rue du Loess, 67034 Cedex 2, Strasbourg, France
| | - D Colson
- SPEC, CEA, CNRS, Université Paris, Saclay, CEA Saclay, 91191 Gif sur Yvette, France
| | - A Forget
- SPEC, CEA, CNRS, Université Paris, Saclay, CEA Saclay, 91191 Gif sur Yvette, France
| | - D Halley
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-UdS 23 rue du Loess, 67034 Cedex 2, Strasbourg, France
| | - A Koc
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik & Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam/Golm, Germany
| | - M Reinhardt
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik & Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam/Golm, Germany
| | - C Kwamen
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik & Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam/Golm, Germany
| | - N A Morley
- University of Sheffield, Department of Materials Science and Engineering, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - M Bargheer
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin, Albert-Einstein-Straße 15, 12489 Berlin, Germany
- Institut für Physik & Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam/Golm, Germany
| | - M Viret
- SPEC, CEA, CNRS, Université Paris, Saclay, CEA Saclay, 91191 Gif sur Yvette, France
| | - R Gumeniuk
- Institut für Experimentelle Physik, TU Bergakademie Freiberg, Leipziger Straße 23, 09596 Freiberg, Germany
| | - G Schmerber
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-UdS 23 rue du Loess, 67034 Cedex 2, Strasbourg, France
| | - B Doudin
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-UdS 23 rue du Loess, 67034 Cedex 2, Strasbourg, France
| | - B Kundys
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-UdS 23 rue du Loess, 67034 Cedex 2, Strasbourg, France
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von Reppert A, Pudell J, Koc A, Reinhardt M, Leitenberger W, Dumesnil K, Zamponi F, Bargheer M. Persistent nonequilibrium dynamics of the thermal energies in the spin and phonon systems of an antiferromagnet. Struct Dyn 2016; 3:054302. [PMID: 27679803 PMCID: PMC5018005 DOI: 10.1063/1.4961253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 08/04/2016] [Indexed: 05/22/2023]
Abstract
We present a temperature and fluence dependent Ultrafast X-Ray Diffraction study of a laser-heated antiferromagnetic dysprosium thin film. The loss of antiferromagnetic order is evidenced by a pronounced lattice contraction. We devise a method to determine the energy flow between the phonon and spin system from calibrated Bragg peak positions in thermal equilibrium. Reestablishing the magnetic order is much slower than the cooling of the lattice, especially around the Néel temperature. Despite the pronounced magnetostriction, the transfer of energy from the spin system to the phonons in Dy is slow after the spin-order is lost.
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Affiliation(s)
- A von Reppert
- Institut für Physik and Astronomie, Universität Potsdam , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - J Pudell
- Institut für Physik and Astronomie, Universität Potsdam , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - A Koc
- Helmholtz Zentrum Berlin , Albert-Einstein-Str. 15, 12489 Berlin, Germany
| | - M Reinhardt
- Helmholtz Zentrum Berlin , Albert-Einstein-Str. 15, 12489 Berlin, Germany
| | - W Leitenberger
- Institut für Physik and Astronomie, Universität Potsdam , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - K Dumesnil
- Institut Jean Lamour (UMR CNRS 7198), Université Lorraine , Boulevard des Aiguillettes B.P. 239, F-54500 Vandoeuvre les Nancy Cédex, France
| | - F Zamponi
- Institut für Physik and Astronomie, Universität Potsdam , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
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30
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Reinhardt M, Parigi AD, Chen K, Reiman EM, Thiyyagura P, Krakoff J, Hohenadel MG, Le DSNT, Weise CM. Deactivation of the left dorsolateral prefrontal cortex in Prader-Willi syndrome after meal consumption. Int J Obes (Lond) 2016; 40:1360-8. [PMID: 27121248 PMCID: PMC5014561 DOI: 10.1038/ijo.2016.75] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/29/2016] [Accepted: 04/08/2016] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Prader-Willi syndrome (PWS) is a type of human genetic obesity that may give us information regarding the physiology of non-syndromic obesity. The objective of this study was to investigate the functional correlates of hunger and satiety in individuals with PWS in comparison with healthy controls with obesity, hypothesizing that we would see significant differences in activation in the left dorsolateral prefrontal cortex (DLPFC) based on prior findings. SUBJECTS/METHODS This study compared the central effects of food consumption in nine individuals with PWS (7 men, 2 women; body fat 35.3±10.0%) and seven controls (7 men; body fat 28.8±7.6%), matched for percentage body fat. H2(15)O-PET (positron emission tomography) scans were performed before and after consumption of a standardized liquid meal to obtain quantitative measures of regional cerebral blood flow (rCBF), a marker of neuronal activity. RESULTS Compared with obese controls, PWS showed altered (P<0.05 family-wise error cluster-level corrected; voxelwise P<0.001) rCBF before and after meal consumption in multiple brain regions. There was a significant differential rCBF response within the left DLPFC after meal ingestion with decreases in DLPFC rCBF in PWS; in controls, DLPFC rCBF tended to remain unchanged. In more liberal analyses (P<0.05 family-wise error cluster-level corrected; voxelwise P<0.005), rCBF of the right orbitofrontal cortex (OFC) increased in PWS and decreased in controls. In PWS, ΔrCBF of the right OFC was associated with changes in appetite ratings. CONCLUSIONS The pathophysiology of eating behavior in PWS is characterized by a paradoxical meal-induced deactivation of the left DLPFC and activation in the right OFC, brain regions implicated in the central regulation of eating behavior.
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Affiliation(s)
- M Reinhardt
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, Phoenix, AZ, USA.,Department of Diagnostic and Interventional Radiology, University of Leipzig, Leipzig, Germany
| | - A D Parigi
- Department of Nutrition Sciences, Drexel University, Philadelphia, PA, USA.,Boehringer Ingelheim Pharmaceuticals, Ridgefield, CT, USA
| | - K Chen
- Banner Alzheimer's Institute, Phoenix, AZ, USA
| | - E M Reiman
- Banner Alzheimer's Institute, Phoenix, AZ, USA.,Neurogenomics Division, Translational Genomics Research Institute, University of Arizona, and Arizona State University, Phoenix, AZ, USA
| | | | - J Krakoff
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, Phoenix, AZ, USA
| | - M G Hohenadel
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, Phoenix, AZ, USA
| | - D S N T Le
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, Phoenix, AZ, USA
| | - C M Weise
- Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services, Phoenix, AZ, USA.,Department of Neurology, University of Leipzig, Leipzig, Germany
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Reinhardt M, Piaggi P, Thearle M, Krakoff J. Validierung vollautomatischer dual-röntgen-Absorptiometriemessungen von viszeralem Fettgewebe im Vergleich zu MRT. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581325] [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: 10/22/2022]
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Griesinger F, Lüers A, Falk M, Conradi I, Reinhardt M, Kluge A, Willborn K, Prenzel R, Scriba DC, Henke R, Eberhardt W, Hallas C, Tiemann M. Intercalated TKI and chemotherapy induction in EGFR mt+ NSCLC stage IIIA and IIIB: report of 3 cases with complete pathologic remission in mediastinal lymph nodes. Pneumologie 2016. [DOI: 10.1055/s-0036-1572236] [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: 10/22/2022]
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33
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Heintze S, Reinhardt M, Monreal D, Kolb E, Reinshagen J, Rousson V. Fatigue resistance of 3-unit zirconia and lithium disilicate molar FPDs. Dent Mater 2016. [DOI: 10.1016/j.dental.2016.08.033] [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: 10/20/2022]
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34
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Bojahr A, Gohlke M, Leitenberger W, Pudell J, Reinhardt M, von Reppert A, Roessle M, Sander M, Gaal P, Bargheer M. Second Harmonic Generation of Nanoscale Phonon Wave Packets. Phys Rev Lett 2015; 115:195502. [PMID: 26588396 DOI: 10.1103/physrevlett.115.195502] [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] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Indexed: 05/06/2023]
Abstract
Phonons are often regarded as delocalized quasiparticles with certain energy and momentum. The anharmonic interaction of phonons determines macroscopic properties of the solid, such as thermal expansion or thermal conductivity, and a detailed understanding becomes increasingly important for functional nanostructures. Although phonon-phonon scattering processes depicted in simple wave-vector diagrams are the basis of theories describing these macroscopic phenomena, experiments directly accessing these coupling channels are scarce. We synthesize monochromatic acoustic phonon wave packets with only a few cycles to introduce nonlinear phononics as the acoustic counterpart to nonlinear optics. Control of the wave vector, bandwidth, and consequently spatial extent of the phonon wave packets allows us to observe nonlinear phonon interaction, in particular, second harmonic generation, in real time by wave-vector-sensitive Brillouin scattering with x-rays and optical photons.
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Affiliation(s)
- A Bojahr
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - M Gohlke
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - W Leitenberger
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - J Pudell
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - M Reinhardt
- Helmholtz Zentrum Berlin, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - A von Reppert
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - M Roessle
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - M Sander
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
| | - P Gaal
- Helmholtz Zentrum Berlin, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - M Bargheer
- Institut für Physik and Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany
- Helmholtz Zentrum Berlin, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
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Reinhardt M, Schlögl M, Bonfiglio S, Votruba SB, Krakoff J, Thearle MS. Lower core body temperature and greater body fat are components of a human thrifty phenotype. Int J Obes (Lond) 2015; 40:754-60. [PMID: 26499440 DOI: 10.1038/ijo.2015.229] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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] [Received: 08/01/2015] [Revised: 10/12/2015] [Accepted: 10/16/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND/OBJECTIVES In small studies, a thrifty human phenotype, defined by a greater 24-hour energy expenditure (EE) decrease with fasting, is associated with less weight loss during caloric restriction. In rodents, models of diet-induced obesity often have a phenotype including a reduced EE and decreased core body temperature. We assessed whether a thrifty human phenotype associates with differences in core body temperature or body composition. SUBJECTS/METHODS Data for this cross-sectional analysis were obtained from 77 individuals participating in one of two normal physiology studies while housed on our clinical research unit. Twenty-four-hour EE using a whole-room indirect calorimeter and 24-h core body temperature were measured during 24 h each of fasting and 200% overfeeding with a diet consisting of 50% carbohydrates, 20% protein and 30% fat. Body composition was measured by dual X-ray absorptiometry. To account for the effects of body size on EE, changes in EE were expressed as a percentage change from 24-hour EE (%EE) during energy balance. RESULTS A greater %EE decrease with fasting correlated with a smaller %EE increase with overfeeding (r=0.27, P=0.02). The %EE decrease with fasting was associated with both fat mass and abdominal fat mass, even after accounting for covariates (β=-0.16 (95% CI: -0.26, -0.06) %EE per kg fat mass, P=0.003; β=-0.0004 (-0.0007, -0.00004) %EE kg(-1) abdominal fat mass, P=0.03). In men, a greater %EE decrease in response to fasting was associated with a lower 24- h core body temperature, even after adjusting for covariates (β=1.43 (0.72, 2.15) %EE per 0.1 °C, P=0.0003). CONCLUSIONS Thrifty individuals, as defined by a larger EE decrease with fasting, were more likely to have greater overall and abdominal adiposity as well as lower core body temperature consistent with a more efficient metabolism.
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Affiliation(s)
- M Reinhardt
- Department of Health and Human Services, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA.,Department of Diagnostic and Interventional Radiology, University Leipzig, Leipzig, Germany
| | - M Schlögl
- Department of Health and Human Services, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA.,Department of Geriatrics and Aging Research, University Hospital Zurich, Zurich, Switzerland
| | - S Bonfiglio
- Department of Health and Human Services, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - S B Votruba
- Department of Health and Human Services, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - J Krakoff
- Department of Health and Human Services, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
| | - M S Thearle
- Department of Health and Human Services, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, USA
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Berger MR, Yanapirut P, Reinhardt M, Klenner T, Scherf HR, Schmeiser HH, Eibl H. Antitumor activity of alkylphosphocholines and analogues in methylnitrosourea-induced rat mammary carcinomas. Prog Exp Tumor Res 2015; 34:98-115. [PMID: 1438807 DOI: 10.1159/000420836] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- M R Berger
- Institute of Toxicology and Chemotherapy, German Cancer Research Center, Heidelberg
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Viswanathan R, Rana R, Lee Y, Alagkiozidis I, Reinhardt M, Arain A, Tolentino J, Pradhan T. Relationship of locus of control and depression to treatment adherence in gynecologic oncology patients. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.01.203] [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: 11/15/2022]
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Hillmann A, Jung E, Engbers A, Reinhardt M, Wardemann H, Rieger M, Pap T, Jacobi A. A2.13 DNA-antibody complexes are internalised by podocytes. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.48] [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: 11/04/2022]
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Schumacher T, Brink I, Mix M, Reinhardt M, Herget G, Digel W, Henke M, Moser E, Nitzsche E. FDG-PET imaging for the staging and follow-up of small cell lung cancer. ACTA ACUST UNITED AC 2014; 28:483-8. [PMID: 11357499 DOI: 10.1007/s002590100474] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The staging procedures for small cell lung cancer do not differ appreciably from those for other forms of lung cancer. For practical purposes, the TNM stages are usually collapsed into a simple binary classification: limited disease and extensive disease. This study was performed to answer the question of whether fluorine-18 labelled 2-deoxy-2-D-glucose positron emission tomography (FDG-PET) imaging permits appropriate work-up (including both primary and follow-up staging) of patients presenting with small cell lung cancer, as compared with currently recommended staging procedures. Thirty-six FDG-PET examinations were performed in 30 patients with histologically proven small cell lung cancer. Twenty-four patients were examined for primary staging while four were imaged for therapy follow-up only. Two patients underwent both primary staging and up to four examinations for therapy follow-up. Static PET imaging was performed according to a standard protocol. Image reconstruction was based on an ordered subset expectation maximization algorithm including post-injection segmented attenuation correction. Results of FDG-PET were compared with those of the sum of other staging procedures. Identical results from FDG-PET and the sum of the other staging procedures were obtained in 23 of 36 examinations (6x limited disease, 12x extensive disease, 5x no evidence of disease). In contrast to the results of conventional staging, FDG-PET indicated extensive disease resulting in an up-staging in seven patients. In one patient in whom there was no evidence for tumour on conventional investigations following treatment, FDG-PET was suggestive of residual viability of the primary tumour. Furthermore, discordant results were observed in five patients with respect to lung, bone, liver and adrenal gland findings, although in these cases the results did not affect staging as limited or extensive disease. Moreover, FDG-PET appeared to be more sensitive for the detection of metastatic mediastinal and hilar lymph nodes and bone metastases. Finally, all findings considered suspicious for tumour involvement on the other staging procedures were also detected by FDG-PET. It is concluded that FDG-PET has potential for use as a simplified staging tool for small cell lung cancer.
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Affiliation(s)
- T Schumacher
- Division of Nuclear Medicine, Albert Ludwigs University, Medical Center, Freiburg, Germany.
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Kreuzer M, Strobl M, Reinhardt M, Hemmer M, Hauß T, Dahint R, Steitz R. Impact of a model synovial fluid on supported lipid membranes. Biochimica et Biophysica Acta (BBA) - Biomembranes 2012; 1818:2648-59. [DOI: 10.1016/j.bbamem.2012.05.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 05/14/2012] [Accepted: 05/21/2012] [Indexed: 12/20/2022]
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Grunewald S, Reinhardt M, Blumenauer V, Hmeidan AF, Glander HJ, Paasch U. Effects of post-density gradient swim-up on apoptosis signalling in human spermatozoa. Andrologia 2010; 42:127-31. [DOI: 10.1111/j.1439-0272.2009.00978.x] [Citation(s) in RCA: 12] [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] [Indexed: 11/28/2022] Open
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Hothorn M, Neumann H, Lenherr ED, Wehner M, Rybin V, Hassa PO, Uttenweiler A, Reinhardt M, Schmidt A, Seiler J, Ladurner AG, Herrmann C, Scheffzek K, Mayer A. Catalytic Core of a Membrane-Associated Eukaryotic Polyphosphate Polymerase. Science 2009; 324:513-6. [DOI: 10.1126/science.1168120] [Citation(s) in RCA: 217] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Palmowski M, Peschke P, Huppert JH, Hauff P, Reinhardt M, Mäurer M, Huber P, Semmler W, Kießling F. Erfassung biologischer Effekte einer Schwerionentherapie auf die Tumorgefäße von Prostatakarzinomen-Modellen mittels Molekularer Ultraschallbildgebung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221635] [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: 10/20/2022]
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Abstract
Recombinant adeno-associated virus (rAAV) vectors consisting of self-complementary genomes and packaged in certain capsids can target primary sensory neurons efficiently and can control neuropathic pain long term by expressing opioid or non-opioid analgesic genes. This review examines the therapeutic potential of the approach in five sections: Pain control in oncology (including a discussion of cancer centers as translational pain research environment); vector biology; safety considerations and immunological lessons learned from rAAV clinical trials of other disorders; development of intrathecal rAAV therapy in rodent models of pain; and preclinical steps towards clinical translation of rAAV for pain. In the field of analgesic drug development, clinical validation of new approaches identified in rodents is currently a critical limiting step. Small-molecule therapeutics suitable as conventional drugs to probe novel targets in clinical trials are often unavailable. In this context, gene therapy could fill an important gap in the drug development process facilitating first-into-human trials of untested targeted treatments, each instantiated as a therapeutic gene.
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Affiliation(s)
- A S Beutler
- Department of Medicine (Hematology/Oncology), Mount Sinai School of Medicine, New York, NY, USA.
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Palmowski M, Huppert J, Hauff P, Reinhardt M, Schreiner K, Hallscheidt P, Semmler W, Kiessling F. Ein neues Konzept zur Erfassung antiangiogener Therapieeffekte in Tumor Xenograft-Modellen durch Kombination von kontrastverstärktem und nativem 3D Hochfrequenz Doppler Ultraschall. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073638] [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: 10/21/2022]
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Palmowski M, Huppert J, Hauff P, Reinhardt M, Mäurer M, Kauffmann GW, Semmler W, Kiessling F. Quantitative Molekulare Ultraschallbildgebung zur Erfassung der Expression angiogener Markermoleküle in Plattenepithel-Xenografts unter Therapie. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073637] [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: 10/21/2022]
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Eberl MM, Fox CH, Broffman G, Pomerantz J, Serghany J, Reinhardt M, Watroba N, Edge SB. An automated practice-based intervention for case management of abnormal mammograms. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.6563] [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: 11/20/2022] Open
Abstract
6563 Background: Failure to obtain follow-up (f/u) of abnormal mammograms may delay cancer diagnosis and impact outcome; studies show up to 20% of women do not get recommended f/u. Our group previously established that administrative claims linked to medical records accurately identify care for management of abnormal mammograms. We are testing a case management system linking claims data to mammogram information to assist physicians in assuring appropriate f/u for abnormal mammograms. Methods: Electronic medical records in a staff model practice affiliated with a single payer are scanned to identify the BI-RADS code for all mammograms. The practice performs about 8,000 mammograms with about 500 abnormal mammograms annually. Physicians are notified of each abnormal mammogram and provided with a standardized care pathway for management. For each BI-RADS 0, 3, 4 or 5 mammogram, claims are searched for f/u breast procedures (imaging, biopsy, surgery). If recommended f/u (additional imaging for BI-RADS 0, biopsy by 2 months for BI-RADS 4 and 5, f/u imaging by 8 months for BI-RADS 3) is not observed, the ordering physician is alerted. Results: From 01/01/2001 to 12/31/2003, we observed that among women eligible for f/u, 189 (16%) did not receive BI-RADS recommended f/u care. In the prospective intervention from 1/1/06 - 6/30/06, 166 BI-RADS 0, 21 BI-RADS 4, and 3 BI-RADS 5 mammograms had 98.2%, 76.2%, and 100% appropriate f/u, respectively. From the alerts, all but one patient who refused biopsy received appropriate care. Conclusions: A practice intervention utilizing BI- RADS data linked to claims accurately identified missed f/u in a time frame when appropriate care can be delivered. This practice-based intervention has potential to improve the management of other cancers and chronic diseases. This intervention is being expanded on a community wide level. No significant financial relationships to disclose.
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Affiliation(s)
- M. M. Eberl
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - C. H. Fox
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - G. Broffman
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - J. Pomerantz
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - J. Serghany
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - M. Reinhardt
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - N. Watroba
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
| | - S. B. Edge
- SUNY At Buffalo, Buffalo, NY; Lifetime Health, Inc., Buffalo, NY; Univera Healthcare, Inc., Buffalo, NY; Roswell Park Cancer Institute, Buffalo, NY
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Wüllner U, Wüllner U, Gündisch D, Herzog H, Minnerop M, Joe A, Warnecke M, Jessen F, Schütz C, Reinhardt M, Klockgether T, Schmaljohann J. Smoking upregulates α4β2∗ nicotinic acetylcholine receptors in brainstem and cerebellum. Clin Neurophysiol 2007. [DOI: 10.1016/j.clinph.2006.11.258] [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: 11/25/2022]
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Elias J, Reinhardt M, Hautmann W, Harms I, Oppermann H, Schröter M, Hellenbrand W, Oster P, Kurzai O, Taha MK, Nossal R, Frosch M, Vogel M. 3. Würzburger Workshop zur Epidemiologie, Prävention und Therapie der invasiven Meningokokkenerkrankung 2006. Gesundheitswesen 2007; 69:256-62. [PMID: 17533569 DOI: 10.1055/s-2007-973087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
On October 5th, 2006, the German Reference Centre for Meningococci (NRZM) held the 3rd Workshop on Epidemiology, Prevention and Treatment of Invasive Meningococcal Disease, in collaboration with the German Society for Hygiene and Microbiology (DGHM). Given the recent recommendation of the German Standing Committee on Vaccination (STIKO) for conjugate meningococcal C vaccination of all children in the second year of life, observations from meningococcal C conjugate vaccination campaigns in other European countries were presented and compared to the German situation. Moreover, the newly implemented cluster detection routines employed at the NRZM and their integration into the interactive geographical information system EpiScanGIS were shown. Based on recent experiences from regional outbreaks in Oberallgäu, Sangerhausen, and Greater Aachen, examples for public health intervention were given at the conference. In addition, current developments in the area of meningococcal research, as well as trends in antimicrobial susceptibility were covered. Finally, the latest evidence concerning the clinical management and chemoprophylaxis of this invasive bacterial disease was discussed.
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Affiliation(s)
- J Elias
- Nationales Referenzzentrum für Meningokokken, Institut für Hygiene und Mikrobiologie, Universität Würzburg, Germany.
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Reinhardt M, Elias J, Albert J, Frosch M, Vogel U, Harmsen D. P1246 EpiScanGIS: a geographical information system for laboratory surveillance of meningococcal disease in Germany. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)71086-5] [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: 11/15/2022]
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