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Maier A, Hoffmann U, Fegert J. Vermittlung von Wissen und Kompetenzen im Kinderschutz – der Online Kurs „Kinderschutz in der Medizin – ein Grundkurs für alle Gesundheitsberufe“. DAS GESUNDHEITSWESEN 2018. [DOI: 10.1055/s-0038-1667786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Bittner D, Mayrhofer T, Budoff M, Szilveszter B, Hallett T, Ivanov A, Janjua S, Meyersohn N, Staziaki P, Achenbach S, Ferencik M, Douglas P, Hoffmann U, Lu M. 1184Prognostic value of coronary CT angiography beyond coronary artery calcium in stable chest pain: comparison between conventional stenosis severity and CAD-RADS stenosis categories in the PROMISE trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.1184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Foldyna B, Karady J, Banerji D, Lu MT, Ferencik M, Mayrhofer T, Bittner DO, Udelson JE, Fordyce CB, Meyersohn N, Emami H, Douglas PS, Hoffmann U. 3100Diamond and Forrester-predicted vs. coronary CTA-observed prevalence of obstructive CAD in patients with stable chest pain: results from the PROMISE trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Schramm D, Reuter M, Grabenhenrich LB, Schuster A, Lex C, Bauer CP, Hoffmann U, Forster J, Zepp F, Bergmann RL, Bergmann KE, Wahn U, Keil T, Lau S. What does lung function tell us about respiratory multimorbidity in childhood and early adulthood? Results from the MAS birth cohort study. Pediatr Allergy Immunol 2018; 29:481-489. [PMID: 29604118 DOI: 10.1111/pai.12901] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/23/2018] [Indexed: 01/10/2023]
Abstract
BACKGROUND Interaction between respiratory multimorbidity and lung function has not been examined in longitudinal population studies. We aimed to assess the association of multimorbidity of asthma and rhinitis with lung function and bronchial hyperresponsiveness in comparison with single and no allergies from early school age to young adulthood. METHODS In 1990, the Multicenter Allergy Study birth cohort recruited 1314 newborns from 5 German cities. At 7, 13, and 20 years, we performed lung function and bronchial challenge tests. We assessed symptoms, medications, and doctor's diagnoses for asthma and rhinitis for 3 outcomes: current multimorbidity (both coexisting), asthma only, and rhinitis only. RESULTS From 7 to 20 years, multimorbidity prevalence more than doubled from 3.5% to 7.7%, current asthma only (without rhinitis co-occurring) decreased by half from 2.8% to 1.3%, and current rhinitis only (without asthma co-occurring) increased from 14.3% to 41.6%. Resting lung function parameters differed between allergic and asymptomatic participants but showed no considerable differences between the allergic phenotypes. Frequency and severity of bronchial hyperresponsiveness were particularly associated with multimorbidity. At the age of 20 years, participants with multimorbidity showed a clearly higher severity in hyperresponsiveness compared to participants who suffered only asthma (P = .049) or rhinitis (P = .008) or were asymptomatic (P < .001). CONCLUSION Single lung function measurements from childhood ongoing do not seem to discriminate between subjects with multimorbidity, single allergies, and no allergy. Our results show that multimorbidity is associated with more severe symptoms compared to those suffering only a single allergic disease.
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Koschate J, Thieschäfer L, Drescher U, Hoffmann U. Impact of 60 days of 6° head down tilt bed rest on muscular oxygen uptake and heart rate kinetics: efficacy of a reactive sledge jump countermeasure. Eur J Appl Physiol 2018; 118:1885-1901. [PMID: 29946969 DOI: 10.1007/s00421-018-3915-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 06/08/2018] [Indexed: 01/06/2023]
Abstract
PURPOSE The effects of 60 days of head down tilt bed rest (HDBR) with and without the application of a reactive jump countermeasure were investigated, using a method which enables to discriminate between pulmonary ([Formula: see text]O2pulm) and muscular ([Formula: see text]O2musc) oxygen uptake kinetics to control for hemodynamic influences. METHODS 22 subjects were randomly allocated to either a group performing a reactive jumps countermeasure (JUMP; n = 11, male, 29 ± 7 years, 23.9 ± 1.3 kg m- 2) or a control group (CTRL; n = 11, male, 29 ± 6 years, 23.3 ± 2.0 kg m- 2). Heart rate (HR) and [Formula: see text]O2pulm were measured in response to repeated changes in work rate between 30 and 80 W before (BDC-9) and two times after HDBR (R+ 2, R+ 13). Kinetic responses of HR, [Formula: see text]O2pulm, and [Formula: see text]O2musc were assessed applying time series analysis. Higher maxima in cross-correlation functions (CCFmax(x)) between work rate and the respective parameter indicate faster kinetics responses. Statistical analysis was performed applying multifactorial analysis of variance. RESULTS CCFmax([Formula: see text]O2musc) and CCFmax([Formula: see text]O2pulm) were not significantly different before and after HDBR (P > 0.05). CCFmax(HR) decreased following bed rest (JUMP: BDC-9: 0.30 ± 0.09 vs. R+ 2: 0.28 ± 0.06 vs. R+13: 0.28 ± 0.07; CTRL: 0.35 ± 0.09 vs. 0.27 ± 0.06 vs. 0.33 ± 0.07 P = 0.025). No significant differences between the groups were observed (P > 0.05). Significant alterations were found for CCFmax of mean arterial blood pressure (mBP) after HDBR (JUMP: BDC-9: 0.21 ± 0.07 vs. R+ 2: 0.30 ± 0.13 vs. R+ 13: 0.28 ± 0.08; CTRL: 0.25 ± 0.07 vs. 0.38 ± 0.13 vs. 0.28 ± 0.08; P = 0.008). CONCLUSIONS Despite hemodynamic changes, [Formula: see text]O2 kinetics seem to be preserved for a longer period of HDBR, even without the application of a countermeasure.
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Yücel G, Behnes M, Barth C, Wenke A, Sartorius B, Mashayekhi K, Yazdani B, Bertsch T, Rusnak J, Saleh A, Hoffmann U, Fastner C, Lang S, Zhou X, Sattler K, Borggrefe M, Akin I. Percutaneous Closure of Left Atrial Appendage significantly affects Lipidome Metabolism. Sci Rep 2018; 8:5894. [PMID: 29650978 PMCID: PMC5897373 DOI: 10.1038/s41598-018-23935-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 03/23/2018] [Indexed: 11/09/2022] Open
Abstract
Patients with non-valvular atrial fibrillation (AF) and a high risk for oral anticoagulation can be treated by percutaneous implantation of left atrial appendage occlusion devices (LAAC) to reduce the risk of cardio-embolic stroke. This study evaluates whether LAAC may influence lipid metabolism, which has never been investigated before. Patients with successful LAAC were included consecutively. Venous peripheral blood samples of patients were collected immediately before (T0, baseline) and 6 months after (T1, mid-term) LAAC. A targeted metabolomics approach based on electrospray ionization liquid chromatography-mass spectrometry (ESI-LC-MS/MS) and MS/MS measurements was performed. A total of 34 lipids revealed a significant change from baseline to mid-term follow-up after successful LAAC. Subgroup analysis revealed confounding influence by gender, age, diabetes mellitus type II, body mass index, left ventricular ejection fraction, creatinine and NT-proBNP. After multivariable adjustment within logistic regression models, these 34 lipids were still significantly altered after LAAC. Successful percutaneous LAAC may affect lipid metabolism and thereby may potentially affect pro-atherogenic and cardio-toxic effects.
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Abstract
BACKGROUND The systolic blood pressure intervention trial (SPRINT) published in 2015 has opened up new discussions on whether a lower blood pressure target as recommended by the current guidelines would be better for some patient groups. OBJECTIVES To review patient groups in which lower blood pressure targets would not be better. MATERIALS AND METHODS The results of SPRINT, its post-hoc and subgroup analyses, other studies and newer studies, as well as metaanalyses on the topic of blood pressure targets are reviewed and discussed. Studies with patients excluded from the SPRINT study were also analysed. The current international guidelines and recommendations of the Deutsche Hochdruckliga e. V. DHL® are included. RESULTS Blood pressure monitoring methods differed considerably in the previously published studies. The low blood pressure value in SPRINT was mainly achieved due to the unusual method of blood pressure monitoring used and, as such, cannot be compared with blood pressure values in other studies. Based on current evidence, "the lower the better" should not be recommended in the following patient groups: older patients, in particular infirm older patients, patients with diabetes, patients without coronary heart disease or with low cardiovascular risk. CONCLUSIONS When determining a blood pressure target, the method of blood pressure monitoring should be defined. A lower blood pressure target has been shown to be better in some well defined patient groups. However, adverse events due to antihypertensive medications should always be taken into account. Given the multiple exclusion criteria in trials and the results of many studies, "new" lower blood pressure targets could not be recommended in a large population of patients.
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Sattler K, Behnes M, Barth C, Wenke A, Sartorius B, El-Battrawy I, Mashayekhi K, Kuschyk J, Hoffmann U, Papavasiliu T, Fastner C, Baumann S, Lang S, Zhou X, Yücel G, Borggrefe M, Akin I. Correction to: Occlusion of left atrial appendage affects metabolomic profile: focus on glycolysis, tricarboxylic acid and urea metabolism. Metabolomics 2018; 14:20. [PMID: 30830322 PMCID: PMC6744373 DOI: 10.1007/s11306-017-1301-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The article Occlusion of left atrial appendage aff ects metabolomic profile:focus on glycolysis, tricarboxylic acid and urea metabolism, written by K. Sattler, M. Behnes, C. Barth, A. Wenke, B. Sartorius, I. El-Battrawy, K. Mashayekhi, J. Kuschyk, U. Hoffmann, T. Papavasiliu, C. Fastner, S. Baumann, S. Lang, X. Zhou, G. Yücel, M. BorggrefeI, Akin, was originally published Online First without open access.
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Shiban E, Lehmberg J, Hoffmann U, Thiel J, Probst T, Friedl M, Mühlberger A, Meyer B, Shiban Y. Peritraumatic distress fully mediates the relationship between posttraumatic stress symptoms preoperative and three months postoperative in patients undergoing spine surgery. Eur J Psychotraumatol 2018; 9:1423824. [PMID: 29410774 PMCID: PMC5795762 DOI: 10.1080/20008198.2018.1423824] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 12/17/2017] [Indexed: 12/02/2022] Open
Abstract
Background: Growing evidence shows the significance of illness and surgical procedures as traumatizing stressors. Risk factors are widely investigated in various settings and samples, using numerous measures of posttraumatic stress and posttraumatic stress disorder (PTSD). While pretrauma psychological distress is acknowledged as an influential factor, peritraumatic experiences are controversially still being discussed as relevant to the development of PTSD. Objective: In a group of patients consecutively undergoing elective spine surgery (N = 89) in a German hospital, this longitudinal study addressed the question of how pretrauma PTSD symptoms and peritrauma distress interact with one another in regard to the amount of posttrauma symptoms of PTSD. Methods: Pre- and posttrauma symptoms of PTSD as well as peritrauma distress were assessed through questionnaires one week before, one week after or three months after surgery. Results: Even though all three variables showed significant correlations with one another, mediation analysis revealed that peritrauma distress fully mediated the relationship between pre- and posttrauma PTSD symptoms. Conclusions: These results add new insights to the controversial discussion on the role peritraumatic experiences play in the development of PTSD, especially in medical settings.
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Koch S, Giese C, Wang LC, Hoffmann U, Huhle G, Harenberg J. Quantitation of Serotonin from Platelets Using Enzyme-immunoassay in the Presence of Serum from HIT-Patients. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Sattler K, Behnes M, Barth C, Wenke A, Sartorius B, El-Battrawy I, Mashayekhi K, Kuschyk J, Hoffmann U, Papavasiliu T, Fastner C, Baumann S, Lang S, Zhou X, Yücel G, Borggrefe M, Akin I. Occlusion of left atrial appendage affects metabolomic profile: focus on glycolysis, tricarboxylic acid and urea metabolism. Metabolomics 2017; 13:127. [PMID: 29391863 PMCID: PMC5772135 DOI: 10.1007/s11306-017-1255-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/16/2017] [Indexed: 01/03/2023]
Abstract
BACKGROUND Left atrial appendage (LAA) closure (LAAC) by implantation of an occlusion device is an established cardiac intervention to reduce risk of stroke while avoiding intake of oral anticoagulation medication during atrial fibrillation. Cardiac interventions can alter local or systemic gene and protein expression. Effects of LAAC on systemic metabolism have not been studied yet. OBJECTIVES We aimed to study the effects of interventional LAAC on systemic metabolism. METHODS Products of glycolysis, tricarboxylic acid and urea metabolism were analyzed by ESI-LC-MS/MS and MS/MS using the AbsoluteIDQ™ p180 Kit in plasma of 44 patients undergoing successful interventional LAAC at baseline (T0) and after 6 months (T1). RESULTS During follow up, plasma concentrations of several parameters of glycolysis and tricarboxylic acid cycle (TCA) and urea metabolism increased (alanine, hexose, proline, sarcosine), while others decreased (aspartate, glycine, SDMA, serine). Multivariate linear regression analysis showed that time after interventional LAAC was an independent predictor for metabolite changes, including the decrease of SDMA (beta -0.19, p < 0.01) and the increase of sarcosine (beta 0.16, p < 0.01). CONCLUSIONS Successful interventional LAAC affects different pathways of the metabolome, which are probably related to cardiac remodeling. The underlying mechanisms as well as the long term effects have to be studied in the future.
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Bhatia S, Lauster D, Bardua M, Ludwig K, Angioletti-Uberti S, Popp N, Hoffmann U, Paulus F, Budt M, Stadtmüller M, Wolff T, Hamann A, Böttcher C, Herrmann A, Haag R. Linear polysialoside outperforms dendritic analogs for inhibition of influenza virus infection in vitro and in vivo. Biomaterials 2017; 138:22-34. [DOI: 10.1016/j.biomaterials.2017.05.028] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 05/17/2017] [Accepted: 05/18/2017] [Indexed: 12/23/2022]
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Bill V, El-Battrawy I, Schramm K, Ansari U, Hoffmann U, Haghi D, Kuschyk J, Borggrefe M, Akin I. Coincidental coronary artery disease impairs outcome in patients with takotsubo cardiomyopathy. QJM 2017; 110:483-488. [PMID: 28340038 DOI: 10.1093/qjmed/hcx035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND AND AIM Takotsubo cardiomyopathy (TC) is an important differential diagnosis of coronary artery disease (CAD), mimicking acute coronary syndrome in clinical symptoms, biomarker profiles and ST-elevation in ECG. Absence of occlusive coronary disease is an essential criterion distinguishing both diseases. The aim of the study was to explore the influence of co-existing incidental CAD on poorer clinical outcomes and all-cause mortality in TC. DESIGN, METHODS AND RESULTS Our mono-centric study cohort constituted 114 consecutive patients diagnosed with TC between 2003 and 2015. The primary endpoint was the all-cause mortality. Additionally, we compared the incidence of thromboembolic events, life-threatening arrhythmias, cardiogenic shock and in-hospital death. There was no significant difference in gender distribution or mean age in both groups. Patients diagnosed with a co-existing CAD (n = 22), had a more pronounced cardiovascular risk profile. The all-cause mortality among patients with co-existing CAD after a 2-year follow-up was higher than those diagnosed with lone TC (22.7 vs. 5.4 %, P = 0.07). In a multivariate cox regression analysis CAD (HR 3.5, 95 %CI 1.0-11.6; P = 0.04), LVEF ≤ 35% (HR 3.8, 95% CI 0.0-0.6, P = 0.01) and cardiogenic shock (HR 3.8, 95% CI 1.2-11.3; P = 0.01) were independent predictors of the primary endpoint. CONCLUSION Our study reveals that co-existing CAD impairs the outcome in patients with TC. The diagnostic work-up for TC should therefore not necessarily hinge on ruling out CAD.
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Ferencik M, Mayrhofer T, Bittner D, Emami H, Puchner S, Lu M, Meyersohn N, Ivanov A, Adami E, Patel M, Mark D, Udelson J, Lee K, Douglas P, Hoffmann U. 3209High-risk coronary plaque is an independent predictor of major adverse cardiovascular events in patients with stable chest pain: Results from PROMISE. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.3209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hoffmann U, Kreiss E. The Long Night of Sciences - The smartest night of the year. Eur J Immunol 2017. [DOI: 10.1002/eji.201770085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hoffmann U, Sieber CC. [Is Age a Comorbidity?]. Dtsch Med Wochenschr 2017; 142:1030-1036. [PMID: 28728197 DOI: 10.1055/s-0042-109861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Aging is normal process, only somehow questioned by the "anti-aging wave". Normal and pathological aging are therefore separate developments. Older adults often suffer from the frailty syndrome, partly due to diminished resilience. Aging per se is not a comorbidity.
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Weidner KJ, El-Battrawy I, Behnes M, Schramm K, Fastner C, Kuschyk J, Hoffmann U, Ansari U, Borggrefe M, Akin I. Sex differences of in-hospital outcome and long-term mortality in patients with Takotsubo cardiomyopathy. Ther Clin Risk Manag 2017; 13:863-869. [PMID: 28744135 PMCID: PMC5513892 DOI: 10.2147/tcrm.s131760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Previous studies revealed that patients with Takotsubo cardiomyopathy (TTC) have a higher mortality rate than the general population. It is still unclear whether sex differences may influence long-term prognosis of TTC patients. The purpose of this study was to determine whether sex differences do influence the short- and long-term outcomes of TTC. Methods and results A total of 114 patients with TTC were admitted to the University Medical Centre Mannheim from January 2003 to September 2015 and entered into the TTC database of the University Medical Centre Mannheim, and retrospectively analyzed. Patients were diagnosed by the Mayo Clinic criteria. All-cause mortality over mean follow-up of 1,529±1,121 days was revealed. Significantly more male patients died within long-term follow-up compared to female TTC patients (log-rank test; P=0.01). Most males died of noncardiac causes. In multivariate Cox regression analysis, the male sex (P=0.02, hazard ratio [HR] 2.8, 95% CI 1.1–7.2), the ejection fraction ≤35% (P=0.01, HR 3.3, 95% CI 1.2–9.2) and glomerular filtration rate <60 mL/min (P<0.01, HR 3.1, 95% CI 1.4–7.0) figured out as independent predictors of the adverse outcome. Conclusion This study shows that males suffering from TTC reveal a higher long-term all-cause mortality rate than females over a 5 year follow-up period.
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McLean R, Samelson L, Lorbergs A, Anderson D, Hoffmann U, Fox C, Bouxsein M, Kiel D. GREATER PERI-AORTIC ADIPOSE TISSUE IS ASSOCIATED WITH INCREASED TRUNK MUSCLE FAT IN MEN AND WOMEN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shah R, Foldyna B, Hoffmann U. Outcomes of anatomical vs. functional testing for coronary artery disease : Lessons from the PROMISE trial. Herz 2017; 41:384-90. [PMID: 27333988 DOI: 10.1007/s00059-016-4451-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The development of coronary artery disease (CAD) is a major, final common pathway in heart disease worldwide. With a rise in stress testing and increased scrutiny on cost-effectiveness and radiation exposure in medical imaging, a focus on the relative merits of anatomic versus functional characterization of CAD has emerged. In this context, coronary computed tomography angiography (CCTA) is a noninvasive alternative to functional testing as a first-line test for CAD detection but is complimentary in its nature. Here, we discuss the design, results, and implications of the PROMISE trial, a randomized comparative effectiveness study of 10,003 patients across 193 sites in the United States and Canada comparing the prognostic and diagnostic power of CCTA and standard stress testing. Specifically, we discuss the safety (e. g., contrast, radiation exposure) of CCTA versus functional testing in CAD, the need for improved selection for noninvasive testing, the frequency of downstream testing after anatomic or functional imaging, the use of imaging results in clinical management, and novel modalities of CAD risk determination using CCTA. PROMISE demonstrated that in a real-world, low-to-intermediate risk patient population referred to noninvasive testing for CAD, both CCTA and functional testing approaches have similar clinical, economic, and safety-based outcomes. We conclude with open questions in CAD imaging, specifically as they pertain to the utilization of CCTA.
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Drescher U, Koschate J, Schiffer T, Schneider S, Hoffmann U. Analysis of heart rate and oxygen uptake kinetics studied by two different pseudo-random binary sequence work rate amplitudes. Respir Physiol Neurobiol 2017; 240:70-80. [DOI: 10.1016/j.resp.2017.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 03/03/2017] [Accepted: 03/04/2017] [Indexed: 10/20/2022]
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Lauster D, Glanz M, Bardua M, Ludwig K, Hellmund M, Hoffmann U, Hamann A, Böttcher C, Haag R, Hackenberger CPR, Herrmann A. Multivalent Peptide-Nanoparticle Conjugates for Influenza-Virus Inhibition. Angew Chem Int Ed Engl 2017; 56:5931-5936. [PMID: 28444849 PMCID: PMC5485077 DOI: 10.1002/anie.201702005] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Indexed: 12/20/2022]
Abstract
To inhibit binding of the influenza A virus to the host cell glycocalyx, we generate multivalent peptide-polymer nanoparticles binding with nanomolar affinity to the virus via its spike protein hemagglutinin. The chosen dendritic polyglycerol scaffolds are highly biocompatible and well suited for a multivalent presentation. We could demonstrate in vitro that by increasing the size of the polymer scaffold and adjusting the peptide density, viral infection is drastically reduced. Such a peptide-polymer conjugate qualified also in an in vivo infection scenario. With this study we introduce the first non-carbohydrate-based, covalently linked, multivalent virus inhibitor in the nano- to picomolar range by ensuring low peptide-ligand density on a larger dendritic scaffold.
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Lauster D, Glanz M, Bardua M, Ludwig K, Hellmund M, Hoffmann U, Hamann A, Böttcher C, Haag R, Hackenberger CPR, Herrmann A. Multivalente Peptid-Nanopartikel-Konjugate zur Hemmung des Influenzavirus. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Kenngott EE, Pfeil J, Hoffmann U, Lauer U, Kühl AA, Rigby A, Pernthaner A, Hamann A. Facilitated Peptide Transport via the Mucosal Epithelium: Impact on Tolerance Induction. Front Immunol 2017; 8:216. [PMID: 28321216 PMCID: PMC5337492 DOI: 10.3389/fimmu.2017.00216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/15/2017] [Indexed: 11/17/2022] Open
Abstract
A hallmark of autoimmunity is the breakdown of tolerance and generation of effector responses against self-antigens. Re-establishment of tolerance in autoimmune disorders was always the most desired treatment option; however, despite many efforts, clinical trials have been largely unsuccessful. This also applies to the generation of oral tolerance, which seems to be a default response type of the mucosa-associated lymphoid tissues to harmless antigens. In this study, we report improved efficacy of oral tolerance induction by coupling antigen with the newly identified mucosal carrier peptide 13C. Antigen coupled to 13C is efficiently taken up in the gastrointestinal tract and could be visualized in cells of the lamina propria. Oral, rectal, or nasal treatment effectively induced the proliferation of antigen-specific T cells with some increase in the frequency of regulatory T cells. In a model of delayed-type hypersensitivity, especially intrarectal tolerization treatment resulted in reduced footpad swelling, demonstrating a moderate tolerogenic effect of mucosal treatment with 13C coupled antigen. Coupling of antigens to a transmucosal carrier, therefore, is a promising tool to improve the efficacy of vaccination via mucosal surfaces.
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Foldyna B, Lo J, Grinspoon S, Lu M, Hoffmann U. Statine beeinflussen die Zusammensetzung und reduzieren die Änderungsvariabilität von Koronarplaques: Subanalyse einer randomisierten, kontrollierten Studie von Atorvastatin in HIV Patienten. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Shiban E, Bruckbauer F, Shiban Y, Hoffmann U, Meyer B, Lehmberg J. Affective Disorders in Skull Base Surgery: A Comparison between Endonasal and Open Transcranial Approaches. Skull Base Surg 2017. [DOI: 10.1055/s-0037-1600842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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