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Hagen A, Eggen AE, Hanssen TA, Lappegard KT, Lochen ML, Njolstad I, Wilsgaard T, Hopstock LA. Time trends in cardiovascular risk factors across levels of education in a general population. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.104] [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: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public Institution(s). Main funding source(s): Northern Norway Health Authority
Background
Favourable changes over time in population cardiovascular disease (CVD) risk has not benefitted all socioeconomic groups equally. Social inequality in health also exists in high-income countries with an egalitarian welfare system.
Purpose
We aimed to study CVD risk factors across educational groups over time in a Norwegian general population.
Methods
We used multivariable linear regression and generalised estimating equation models with age-adjusted means and proportions to examine CVD risk (smoking, physical activity level, obesity [body mass index ≥30 kg/m2], blood pressure, total- and low-density lipoprotein [LDL] cholesterol, and total risk of CVD [estimated 10-year risk with NORRISK 2]) across four levels of education: Primary/partly secondary up to 10 years of schooling, upper secondary, tertiary <4 years, tertiary ≥4 years in women and men aged 40-79 years attending a population-based study with two consecutive surveys in 2007-2008 (N=11,941) and 2015-2016 (N=20,322).
Results
In women, the difference between the lowest and the highest education level in risk factors in 2007-2008 versus 2015-2016 was for smoking 22.0 vs 19.2 percentage points (pp), obesity 8.7 vs 8.8 pp, sedentary physical activity level 10.5 vs 11.5 pp (p=0.012), systolic blood pressure 5.5 vs 3.4 mmHg (p=0.001), total cholesterol 0.2 mmol/L vs no difference (p<0.001), LDL cholesterol 0.3 vs 0.1 mmol/L (p<0.001), and total CVD risk 0.9 vs 1.8 (p<0.001), respectively. In men, the corresponding numbers were for smoking 20.1 vs 16.8 pp, obesity 9.9 vs 12.9 pp, sedentary physical activity level 10 vs 11.5 pp (p=0.027), systolic blood pressure 1.7 vs 1.7 mmHg, total cholesterol 0.2 mmol/L vs no difference (p<0.001), LDL cholesterol 0.1 mmol/L vs no difference (p<0.001), and total CVD risk 1.2 vs 0.9, respectively. No difference across educational levels and time regarding blood pressure or total- or LDL cholesterol in users of antihypertensives and lipid-lowering drugs was found, except for an educational difference in the first but not the second time period in female antihypertensive users.
Conclusion
We found a clinically relevant educational gap in CVD risk factors, with more favourable levels with higher education. Over time, the educational gap increased in physical activity in both sexes, and in total CVD risk in women. Further, the educational gap declined in blood lipids in both sexes, and in systolic blood pressure in women. While medication use seems to contribute to weaken the educational gradient in blood pressure and lipid levels, a stronger emphasis on lifestyle interventions is needed to reduce the educational inequalities in behavioural CVD risk factors.
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Affiliation(s)
- A Hagen
- Nordland Hospital, Department of Medicine, Bodo, Norway
| | - AE Eggen
- UiT The Arctic University of Norway, Department of Community Medicine, Tromso, Norway
| | - TA Hanssen
- UiT The Arctic University of Norway, Department of Health and Care Sciences, Tromso, Norway
| | - KT Lappegard
- Nordland Hospital, Department of Medicine, Bodo, Norway
| | - ML Lochen
- UiT The Arctic University of Norway, Department of Community Medicine, Tromso, Norway
| | - I Njolstad
- UiT The Arctic University of Norway, Department of Community Medicine, Tromso, Norway
| | - T Wilsgaard
- UiT The Arctic University of Norway, Department of Community Medicine, Tromso, Norway
| | - LA Hopstock
- UiT The Arctic University of Norway, Department of Community Medicine, Tromso, Norway
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Hagen A, Loer B, Orrell JL, Saldanha R. Decision trees for optimizing the minimum detectable concentration of radioxenon detectors. J Environ Radioact 2021; 229-230:106542. [PMID: 33581483 DOI: 10.1016/j.jenvrad.2021.106542] [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] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/14/2021] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
We present a novel application of machine learning techniques to optimize the design of a radiation detection system. A decision tree-based algorithm is described which greedily optimizes partitioning of energy depositions based on a minimum detectable concentration metric - appropriate for radiation measurement. We apply this method to the task of optimizing sensitivity to radioxenon decays in the presence of a high rate of radon-progeny backgrounds (i.e., assuming no physical radon removal by traditional gas separation techniques). Assuming other backgrounds are negligible, and considering sensitivity to each xenon isotope separately (neglecting interference between isotopes), we find that, in general, high resolution readout and high spatial segmentation yield little additional capability to discriminate against radon backgrounds compared to simpler detector designs.
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Affiliation(s)
- A Hagen
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA.
| | - B Loer
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - J L Orrell
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - R Saldanha
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
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Stewart S, King F, Rodriguez L, Meier S, Sherry S, Abbass A, Deacon H, Nogueira-Arjona R, Hagen A. The effects of excessive and compulsive online searching of COVID-19 information (“cyberchondria”) on general and COVID-19-specific anxiety and fear in romantic couples during lockdown. Eur Psychiatry 2021. [PMCID: PMC9471794 DOI: 10.1192/j.eurpsy.2021.792] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction Cyberchondria involves excessive and uncontrollable online searching of information about a perceived illness. This behavior can cause or maintain distress. Objectives Little is known about cyberchondria during the COVID-19 pandemic or how cyberchondria in one individual may cause distress in their significant other if they are self-isolating together; our study sought to fill these gaps. Methods We conducted a Qualtrics Panel survey with 760 cohabitating Canadian couples; in June 2020, participants retrospectively reported on their cyberchondria behavior, general anxiety, and COVID-19 fears during the month of April 2020, while adhering to stay-at-home advisories. Two separate actor-partner interdependence models (APIMs) used cyberchondria excessiveness and compulsion to predict generalized anxiety and COVID-19 danger/contamination fears in the actor and partner. Results Both cyberchondria excessiveness and compulsion were associated with higher general anxiety and higher COVID-19 danger/contamination fears in the individual (actor effects). Partner cyberchondria compulsion was associated with higher general anxiety in the individual whereas partner cyberchondria excessiveness was associated with higher COVID-19 danger/contamination fears in the individual (partner effects). Conclusions Findings suggest that excessive and uncontrollable searching of information about COVID-19 on the internet during lockdown may contribute to distress in both the individual engaging in the cyberchondria behavior, and in their romantic partner. Moreover, different aspects of cyberchondria in the partner (compulsion vs. excessiveness) appears to contribute to general vs. COVID-19-specific anxiety/fears in the partner, respectively. Future research should examine mechanisms underlying the observed partner effects (e.g., co-rumination, social contagion) and reasons for the differential partner effects of cyberchondria components.
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Hagen A, Lehmann H, Aurich S, Bauer N, Melzer M, Moellerberndt J, Patané V, Schnabel CL, Burk J. Scalable Production of Equine Platelet Lysate for Multipotent Mesenchymal Stromal Cell Culture. Front Bioeng Biotechnol 2021; 8:613621. [PMID: 33553119 PMCID: PMC7859354 DOI: 10.3389/fbioe.2020.613621] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/16/2020] [Indexed: 12/22/2022] Open
Abstract
Translation of multipotent mesenchymal stromal cell (MSC)-based therapies is advancing in human and veterinary medicine. One critical issue is the in vitro culture of MSC before clinical use. Using fetal bovine serum (FBS) as supplement to the basal medium is still the gold standard for cultivation of many cell types including equine MSC. Alternatives are being explored, with substantial success using platelet lysate-supplemented media for human MSC. However, progress lags behind in the veterinary field. The aim of this study was to establish a scalable protocol for equine platelet lysate (ePL) production and to test the ePL in equine MSC culture. Whole blood was harvested into blood collection bags from 20 healthy horses. After checking sample materials for pathogen contamination, samples from 19 animals were included. Platelet concentrates were prepared using a buffy coat method. Platelets, platelet-derived growth factor BB, and transforming growth factor β1 concentrations were increased in the concentrates compared with whole blood or serum (p < 0.05), while white blood cells were reduced (p < 0.05). The concentrates were lysed using freeze/thaw cycles, which eliminated the cells while growth factor concentrations were maintained. Donor age negatively correlated with platelet and growth factor concentrations after processing (p < 0.05). Finally, all lysates were pooled and the ePL was evaluated as culture medium supplement in comparison with FBS, using adipose-derived MSC from four unrelated donor horses. MSC proliferated well in 10% FBS as well as in 10% ePL. However, using 5 or 2.5% ePL entailed highly inconsistent proliferation or loss of proliferation, with significant differences in generation times and confluencies (p < 0.05). MSC expressed the surface antigens CD90, CD44, and CD29, but CD73 and CD105 detection was low in all culture media. Adipogenic and osteogenic differentiation led to similar results in MSC from different culture media. The buffy coat method is useful to produce equine platelet concentrate with increased platelet and reduced white blood cell content in large scales. The ePL obtained supports MSC expansion similar as FBS when used at the same concentration (10%). Further investigations into equine MSC functionality in culture with ePL should follow.
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Affiliation(s)
- A Hagen
- Equine Clinic (Surgery, Orthopedics), Justus-Liebig-University Giessen, Giessen, Germany
| | - H Lehmann
- Department of Veterinary Clinical Sciences, Small Animal Clinic, Justus-Liebig-University Giessen, Giessen, Germany
| | - S Aurich
- Institute of Hygiene and Infectious Diseases of Animals, Justus-Liebig-University Giessen, Giessen, Germany
| | - N Bauer
- Department of Veterinary Clinical Sciences, Clinical Pathology and Clinical Pathophysiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - M Melzer
- Equine Clinic (Surgery, Orthopedics), Justus-Liebig-University Giessen, Giessen, Germany
| | - J Moellerberndt
- Equine Clinic (Surgery, Orthopedics), Justus-Liebig-University Giessen, Giessen, Germany
| | - V Patané
- Department of Veterinary Clinical Sciences, Clinical Pathology and Clinical Pathophysiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - C L Schnabel
- Faculty of Veterinary Medicine, Institute of Immunology, Leipzig University, Leipzig, Germany
| | - J Burk
- Equine Clinic (Surgery, Orthopedics), Justus-Liebig-University Giessen, Giessen, Germany
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Kula A, Liersch S, Krüger K, Walter U, Hagen A. Obesity prevention - is school an effective place? A systematic review. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz187.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Juvenile and childhood obesity or overweight are associated with various secondary diseases and physical limitations, as well as with the effects of discrimination and social exclusion. The early prevention of obesity remains a key area of action worldwide. Schools are considered as a classical setting. The analysis focuses on the effectiveness of interventions, the identification of effective components and conditions as well as barriers. The aim is to provide a differentiated presentation of the current study situation.
Methods
The systematic literature search in eleven databases included studies in English and German published in 1990 to 2015. A control group and posttest data were obligatory. Evaluated outcome measures must map effects on the prevalence of obesity (e.g., BMI, body fat percentage, waist-to-hip ratio). Included full texts were evaluated with the instrument ROBINS-I. Due to the heterogeneity of studies (especially in terms of design, intervention and outcomes) results were analysed qualitatively.
Results
48 primary studies were included of which most studies report data on changes in mean BMI over time, and show predominantly (small) effects in favour of the intervention. Almost all identified interventions include behavioral measures, most of them combine the fields of nutrition and physical activity, with behavioral prevention being overrepresented in particular in activities addressing nutrition.
Conclusions
The results allow the conclusion, that school-based measures to prevent obesity are effective in terms of anthropometric outcome measures, but to a limited extent. There is clear evidence that the effects achieved tend to be maintained beyond the intervention. There are also clear indications for the cost-effectiveness of school-based obesity prevention. The studies from this field of research have clearly gained in quality over the years and are now flanked by health economic analyses.
Funded by DIMDI
Key messages
School-based measures to prevent obesity are effective in terms of anthropometric outcome measures, but to a limited extent. In order to fully realize its potential, school-based measures to prevent obesity should be accompanied by interventions at other levels, like the health-promoting design of living environments.
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Affiliation(s)
- A Kula
- MHH, Institute for Epidemiology, Social Medicine and Health System Research, Hannover, Germany
| | - S Liersch
- MHH, Institute for Epidemiology, Social Medicine and Health System Research, Hannover, Germany
| | - K Krüger
- MHH, Institute for Epidemiology, Social Medicine and Health System Research, Hannover, Germany
| | - U Walter
- MHH, Institute for Epidemiology, Social Medicine and Health System Research, Hannover, Germany
| | - A Hagen
- MHH, Institute for Epidemiology, Social Medicine and Health System Research, Hannover, Germany
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Curran SC, Hagen A, Poust S, Chan LJG, Garabedian BM, de Rond T, Baluyot MJ, Vu JT, Lau AK, Yuzawa S, Petzold CJ, Katz L, Keasling JD. Probing the Flexibility of an Iterative Modular Polyketide Synthase with Non-Native Substrates in Vitro. ACS Chem Biol 2018; 13:2261-2268. [PMID: 29912551 DOI: 10.1021/acschembio.8b00422] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the search for molecular machinery for custom biosynthesis of valuable compounds, the modular type I polyketide synthases (PKSs) offer great potential. In this study, we investigate the flexibility of BorM5, the iterative fifth module of the borrelidin synthase, with a panel of non-native priming substrates in vitro. BorM5 differentially extends various aliphatic and substituted substrates. Depending on substrate size and substitution BorM5 can exceed the three iterations it natively performs. To probe the effect of methyl branching on chain length regulation, we engineered a BorM5 variant capable of incorporating methylmalonyl- and malonyl-CoA into its intermediates. Intermediate methylation did not affect overall chain length, indicating that the enzyme does not to count methyl branches to specify the number of iterations. In addition to providing regulatory insight about BorM5, we produced dozens of novel methylated intermediates that might be used for production of various hydrocarbons or pharmaceuticals. These findings enable rational engineering and recombination of BorM5 and inform the study of other iterative modules.
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Affiliation(s)
- Samuel C. Curran
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew Hagen
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
| | - Sean Poust
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
| | - Leanne Jade G. Chan
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Brett M. Garabedian
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Tristan de Rond
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Marian-Joy Baluyot
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jonathan T. Vu
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew K. Lau
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
| | - Satoshi Yuzawa
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Christopher J. Petzold
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Leonard Katz
- Joint Bioenergy Institute, 5885 Hollis Street, Emeryville California 94608, United States
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jay D. Keasling
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Hørsholm, Denmark
- Center for Synthetic Biochemistry, Institute for Synthetic Biology, Shenzhen Institutes for Advanced Technologies, Shenzhen, China
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Kula A, Liersch S, Krüger K, Walter U, Hagen A. Einzelbeitrag: Adipositasprävention – ist Schule ein wirksamer Ort? – ein systematisches Review. Das Gesundheitswesen 2018. [DOI: 10.1055/s-0038-1667746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- A Kula
- Medizinische Hochschule Hannover, Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Hannover, Deutschland
| | - S Liersch
- Medizinische Hochschule Hannover, Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Hannover, Deutschland
| | - K Krüger
- Medizinische Hochschule Hannover, Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Hannover, Deutschland
| | - U Walter
- Medizinische Hochschule Hannover, Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Hannover, Deutschland
| | - A Hagen
- Medizinische Hochschule Hannover, Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Hannover, Deutschland
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Hagen A, Sutter M, Sloan N, Kerfeld CA. Programmed loading and rapid purification of engineered bacterial microcompartment shells. Nat Commun 2018; 9:2881. [PMID: 30038362 PMCID: PMC6056538 DOI: 10.1038/s41467-018-05162-z] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [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: 02/22/2018] [Accepted: 06/15/2018] [Indexed: 12/30/2022] Open
Abstract
Bacterial microcompartments (BMCs) are selectively permeable proteinaceous organelles which encapsulate segments of metabolic pathways across bacterial phyla. They consist of an enzymatic core surrounded by a protein shell composed of multiple distinct proteins. Despite great potential in varied biotechnological applications, engineering efforts have been stymied by difficulties in their isolation and characterization and a dearth of robust methods for programming cores and shell permeability. We address these challenges by functionalizing shell proteins with affinity handles, enabling facile complementation-based affinity purification (CAP) and specific cargo docking sites for efficient encapsulation via covalent-linkage (EnCo). These shell functionalizations extend our knowledge of BMC architectural principles and enable the development of minimal shell systems of precisely defined structure and composition. The generalizability of CAP and EnCo will enable their application to functionally diverse microcompartment systems to facilitate both characterization of natural functions and the development of bespoke shells for selectively compartmentalizing proteins.
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Affiliation(s)
- Andrew Hagen
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Markus Sutter
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.,MSU-DOE Plant Research Laboratory, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA
| | - Nancy Sloan
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Cheryl A Kerfeld
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA. .,MSU-DOE Plant Research Laboratory, Michigan State University, 612 Wilson Road, East Lansing, MI, 48824, USA. .,Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, MI, 48824, USA.
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Gorenoi V, Brehm M, Koch A, Hagen A. Growth Factors for Angiogenesis in Peripheral Arterial Disease. J Vasc Surg 2017. [DOI: 10.1016/j.jvs.2017.08.003] [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: 11/29/2022]
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Abstract
Polyketides have enormous structural diversity, yet polyketide synthases (PKSs) have thus far been engineered to produce only drug candidates or derivatives thereof. Thousands of other molecules, including commodity and specialty chemicals, could be synthesized using PKSs if composing hybrid PKSs from well-characterized parts derived from natural PKSs was more efficient. Here, using modern mass spectrometry techniques as an essential part of the design-build-test cycle, we engineered a chimeric PKS to enable production one of the most widely used commodity chemicals, adipic acid. To accomplish this, we introduced heterologous reductive domains from various PKS clusters into the borrelidin PKS' first extension module, which we previously showed produces a 3-hydroxy-adipoyl intermediate when coincubated with the loading module and a succinyl-CoA starter unit. Acyl-ACP intermediate analysis revealed an unexpected bottleneck at the dehydration step, which was overcome by introduction of a carboxyacyl-processing dehydratase domain. Appending a thioesterase to the hybrid PKS enabled the production of free adipic acid. Using acyl-intermediate based techniques to "debug" PKSs as described here, it should one day be possible to engineer chimeric PKSs to produce a variety of existing commodity and specialty chemicals, as well as thousands of chemicals that are difficult to produce from petroleum feedstocks using traditional synthetic chemistry.
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Affiliation(s)
| | | | | | | | | | - Christopher J. Petzold
- Physical
Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, California 94270, United States
| | - Jay D. Keasling
- Physical
Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, California 94270, United States
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Hagen A, Albig M, Keller T, Stumm M, Entezami M. Suspicious Prenasal Skin Thickness-to-Nasal Bone Length Ratio: Prevalence and Correlation with Other Markers in Second and Third Trimester Fetuses with Down Syndrome. Ultraschall Med 2015; 36:501-506. [PMID: 26091004 DOI: 10.1055/s-0034-1399285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
PURPOSE To assess the prevalence and value of a suspicious prenasal skin thickness-to-nasal bone length ratio (PT/NB ratio) in comparison to other established markers in a large population of Down syndrome (DS) fetuses. MATERIALS AND METHODS This was a retrospective study of 139 DS fetuses and 530 normal fetuses scanned after 14 + 0 weeks of gestation. To characterize diagnostic performance, we used the ROC curve approach. The presence or absence of a PT/NB ratio > 0.8 and 11 other markers were assessed in the group of DS fetuses. A correlation analysis was performed in order to investigate associations between PT/NB ratio and other markers. RESULTS Among DS fetuses the median PT/NB ratio was 1.06 (IQR 0.729) and was significantly higher compared to normal fetuses with 0.62 (IQR 0.148), (p < 0.001). Gestational age had no influence on the PT/NB ratio. A PT/NB ratio > 0.8 had the highest prevalence of all markers with 89.2 % in the group of DS fetuses, 3 cases were negative for all markers and 3 cases were positive only for PT/NB ratio > 0.8. Marker-specific comparison between prevalences of a suspicious PT/NB ratio with respect to the presence or absence of other markers was statistically significant for hypoplastic NB and major anomalies (p < 0.05). Utilization of at least one of the following five markers was sufficient for detecting 136 out of 139 fetuses with trisomy 21: suspicious PT/NB ratio, hypoplastic NB, nuchal fold thickness, white spot, shortened femur. CONCLUSION The PT/NB ratio is one of the most powerful indicators of DS in the second trimester. It is objective to interpret, easy to measure, and is reproducible.
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Affiliation(s)
- A Hagen
- Obstetrics and Gynecology, Center for Prenatal Diagnosis and Human Genetics Kudamm-199, Berlin, Germany
| | - M Albig
- Obstetrics and Gynecology, Center for Prenatal Diagnosis and Human Genetics Kudamm-199, Berlin, Germany
| | - T Keller
- Statistik, ACOMED, Leipzig, Germany
| | - M Stumm
- Human Genetics, Center for Prenatal Diagnosis and Human Genetics Kudamm-199, Berlin, Germany
| | - M Entezami
- Obstetrics and Gynecology, Center for Prenatal Diagnosis and Human Genetics Kudamm-199, Berlin, Germany
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Kula A, Wiedel C, Borutta B, Kaeding T, Vehling M, Hagen A, Goldapp C, Ommen O, Walter U. grated Interventions in Diet, Physical Activity and Life Skills for children and teens – Review. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv171.094] [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: 11/14/2022] Open
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Kreis J, Sturtz S, Gechter D, Grundmann RT, Gorenoi V, Hagen A, Sauerland S. Ultrasound screening for abdominal aortic aneurysm: a systematic review. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv174.037] [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: 11/14/2022] Open
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Schröer-Günther M, Kreis J, Sturtz S, Gechter D, Grundmann RT, Gorenoi V, Hagen A, Sauerland S. Ultraschall-Screening auf Bauchaortenaneurysmen: Und was ist mit den Frauen? Gesundheitswesen 2015. [DOI: 10.1055/s-0035-1563179] [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: 10/23/2022]
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Kula A, Wiedel C, Borutta B, Kaeding T, Vehling M, Hagen A, Goldapp C, Ommen O, Walter U. Kombinierte Interventionen zu Ernährung, Bewegung und Lebenskompetenz bei Kindern und Jugendlichen – ein systematischer Review. Gesundheitswesen 2015. [DOI: 10.1055/s-0035-1563296] [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: 10/23/2022]
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Poust S, Hagen A, Katz L, Keasling JD. Narrowing the gap between the promise and reality of polyketide synthases as a synthetic biology platform. Curr Opin Biotechnol 2014; 30:32-9. [DOI: 10.1016/j.copbio.2014.04.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/09/2014] [Accepted: 04/11/2014] [Indexed: 11/27/2022]
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Hagen A, Poust S, de Rond T, Yuzawa S, Katz L, Adams PD, Petzold CJ, Keasling JD. In Vitro Analysis of Carboxyacyl Substrate Tolerance in the Loading and First Extension Modules of Borrelidin Polyketide Synthase. Biochemistry 2014; 53:5975-7. [DOI: 10.1021/bi500951c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrew Hagen
- Synthetic Biology Engineering Research Center, 5885 Hollis Street, Emeryville, California 94608, United States
| | | | | | | | - Leonard Katz
- Synthetic Biology Engineering Research Center, 5885 Hollis Street, Emeryville, California 94608, United States
| | - Paul D. Adams
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, California 94608, United States
- Physical
Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, California 94270, United States
| | - Christopher J. Petzold
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, California 94608, United States
- Physical
Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, California 94270, United States
| | - Jay D. Keasling
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, California 94608, United States
- Synthetic Biology Engineering Research Center, 5885 Hollis Street, Emeryville, California 94608, United States
- Physical
Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, California 94270, United States
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Gorenoi V, Hagen A. [Percutaneous coronary intervention in addition to optimal medical therapy for stabile coronary artery disease - a systematic review and meta-analysis]. Dtsch Med Wochenschr 2014; 139:1039-45. [PMID: 24801298 DOI: 10.1055/s-0034-1369879] [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: 10/25/2022]
Abstract
OBJECTIVE We evaluated the effect of percutaneous coronary interventions (PCI) in addition to optimal medical therapy in stable coronary artery disease (CAD). METHODS A systematic literature search was conducted in the online databases MEDLINE, EMBASE etc. in June 2010, updated in February 2013 in MEDLINE and completed by a hand search. Randomized controlled trials (RCT) and systematic reviews of RCT comparing PCI vs. no PCI in stable CAD were identified and evaluated. Results for death, myocardial infarction and angina pectoris of the RCTs using optimal medical therapy were combined with meta-analysis for relative risk (RR). The strength of the evidence was appraised based on GRADE. RESULTS After evaluation of 7 systematic reviews and 23 RCT 4 RCTs using optimal medical therapy (Betablockers, ASS, Statins in more than 80% and ACE-Inhibitors in more than 50% of patients the study) were identified. No significant difference was found for the risks of death and of myocardial infarction between the alternatives up to 5 years after beginning the therapy. The PCI reduced the proportion of patients with angina pectoris attacks up to 3 years after beginning the therapy, RR = 0,81 (95 % CI: 0,71 to 0,92). The strength of the evidence was appraised as moderate. CONCLUSION The use of PCI in addition to optimal medical therapy in stable CAD may reduce the proportion of patients with angina pectoris attacks up to 3 years after beginning the therapy.
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Affiliation(s)
- V Gorenoi
- Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Medizinische Hochschule Hannover
| | - A Hagen
- Institut für Epidemiologie, Sozialmedizin und Gesundheitssystemforschung, Medizinische Hochschule Hannover
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Entezami M, Tchirikov M, Sancken U, Sucker C, Hagen A, Fuchs I. Der Angiogenesequotient sFlt-1/PLGF zur ambulanten Schwangerschaftsüberwachung bei erhöhtem Risiko gestörter Trophoblastinvasion. Geburtshilfe Frauenheilkd 2013. [DOI: 10.1055/s-0033-1347751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Taleyarkhan R, Lapinskas J, Archambault B, Webster J, Grimes T, Hagen A, Fisher K, McDeavitt S, Charlton W. Real-time monitoring of actinides in chemical nuclear fuel reprocessing plants. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2013.02.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Gorenoi V, Schönermark MP, Hagen A. Kostenwirksamkeit von perkutanen Koronarinterventionen zusätzlich zur optimalen medikamentösen Therapie bei stabiler Angina Pectoris. Dtsch Med Wochenschr 2012. [DOI: 10.1055/s-0032-1323254] [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: 10/27/2022]
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22
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Dhein S, Duerrschmidt N, Hagen A, Nowicki M, Spanel-Borowski K, Mohr FW. Chronic nicotine exposure reduces connexin43 gap junction protein in arteries from smokers and down-regulates intercellular communication by α4β2, and α3β2 nicotinic acetylcholine receptor subtypes. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297518] [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: 10/14/2022]
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23
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Hagen A, Entezami M, Gasiorek-Wiens A, Albig M, Becker R, Knoll U, Stumm M, Wegner RD. The impact of first trimester screening and early fetal anomaly scan on invasive testing rates in women with advanced maternal age. Ultraschall Med 2011; 32:302-306. [PMID: 20972947 DOI: 10.1055/s-0029-1245560] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
PURPOSE To evaluate the acceptance of noninvasive screening for trisomy 13, 18, 21 and the impact on invasive testing rates in women at an age≥35 years. MATERIALS AND METHODS In a retrospective analysis from 2003-2006 including 13 268 women≥35 years old with singleton pregnancies and 3133 invasive procedures, we evaluated the prenatal detection rate of aneuploidies in two cohorts. Group 1: advanced maternal age as sole indication, group 2: additional abnormalities and/or suspicious maternal serum parameters. In an additional analysis from 1998-2006 including 31,076 patients≥35 years, we investigated the shift in time of sonography at 11+0-13+6, 14+0-17+6 and 18+0-22+6 gestational weeks (gw). RESULTS Among 13,268 women, 3133 invasive tests were performed with a significant decrease over time (-17%). 9% of women chose invasive testing after a normal ultrasound (group 1, n=1,267) and 14% in the case of additional markers (group 2, n=1,866). 102 cases of aneuploidy were disclosed. The proportion of detected aneuploidies was 0.86% in group 1 and 4.9% in group 2. No change in the overall detection rate (90-93%) was observed. The number of patients≥40 years increased significantly (+2.8%). There was an increase in examinations at 11+0-13+6 gw (+8%), a decrease at 14+0-17+6 gw (-10.3%) and no significant change at 18+0-22+6 gw over time. CONCLUSION Increasing numbers of women≥35 years of age rely on the individually adjusted risk figure to make a decision about invasive testing. The application of these selective procedures can reduce the rates of invasive testing with fewer losses of normal fetuses and led to an earlier diagnosis of aneuploidies.
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Affiliation(s)
- A Hagen
- Obstetrics and Gynecology, Center for Prenatal Diagnosis Kudamm-199, Berlin.
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Gorenoi V, Schönermark M, Hagen A. Risikoprognoseinstrumente zur individualisierten Prävention von kardiovaskulären Erkrankungen in Deutschland. Gesundheitswesen 2010. [DOI: 10.1055/s-0030-1266370] [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: 10/19/2022]
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Han D, Lerner AG, Vande Walle L, Upton JP, Xu W, Hagen A, Backes BJ, Oakes SA, Papa FR. IRE1alpha kinase activation modes control alternate endoribonuclease outputs to determine divergent cell fates. Cell 2009; 138:562-75. [PMID: 19665977 DOI: 10.1016/j.cell.2009.07.017] [Citation(s) in RCA: 636] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Revised: 06/29/2009] [Accepted: 07/16/2009] [Indexed: 01/23/2023]
Abstract
During endoplasmic reticulum (ER) stress, homeostatic signaling through the unfolded protein response (UPR) augments ER protein-folding capacity. If homeostasis is not restored, the UPR triggers apoptosis. We found that the ER transmembrane kinase/endoribonuclease (RNase) IRE1alpha is a key component of this apoptotic switch. ER stress induces IRE1alpha kinase autophosphorylation, activating the RNase to splice XBP1 mRNA and produce the homeostatic transcription factor XBP1s. Under ER stress--or forced autophosphorylation--IRE1alpha's RNase also causes endonucleolytic decay of many ER-localized mRNAs, including those encoding chaperones, as early events culminating in apoptosis. Using chemical genetics, we show that kinase inhibitors bypass autophosphorylation to activate the RNase by an alternate mode that enforces XBP1 splicing and averts mRNA decay and apoptosis. Alternate RNase activation by kinase-inhibited IRE1alpha can be reconstituted in vitro. We propose that divergent cell fates during ER stress hinge on a balance between IRE1alpha RNase outputs that can be tilted with kinase inhibitors to favor survival.
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Affiliation(s)
- Dan Han
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143-2520, USA
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Entezami M, Hartmann K, Albig M, Gasiorek-Wiens A, Becker R, Hagen A. Der leere oder fast leere Magen beim Fehlbildungsscreening – kein guter Marker für die Ösophagusatresie. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1222867] [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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27
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Entezami M, Tillig B, Hagen A, Albig M, Schaible T. Intrauterine Spontantherapie bei Zwerchfellhernie durch passagere Bronchusobstruktion mit Vortäuschung einer CCAM? Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1222868] [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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28
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Entezami M, Hagen A, Albig M. Uteriner Doppler – der Messpunkt entscheidet! Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1222865] [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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29
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Entezami M, Lebek H, Liepe L, Albig M, Gasiorek-Wiens A, Hagen A. Pränatale diagnostizierte Zwerchfellhernie – was entscheidet über das weitere Procedere? Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1222866] [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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30
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Hagen A, Eimer U, Schönermark MP. Regulation der Aufnahme von nichtmedikamentösen Technologien in den Leistungskatalog solidarisch finanzierter Kostenträger in Deutschland, England, Australien und der Schweiz. Gesundheitswesen 2009. [DOI: 10.1055/s-0028-1086381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hagen A, Albig M, Schmitz L, Hopp H, Entezami M. [Intrauterine treatment of incomplete fetal heart block in a mother with Sjögren syndrome]. Ultraschall Med 2008; 29 Suppl 5:268-270. [PMID: 18008217 DOI: 10.1055/s-2007-963551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND Isolated fetal heart block is considered as an immunological disorder in the majority of cases. Mothers of affected fetuses often suffer from connective tissue disease (Sjögren syndrome or Lupus erythematodes). All of them test positive for anti-SS-A (anti Ro) and/or anti-SS-B (anti La) antibodies. Once established, third-degree congenital heart block is permanent and often requires a pacemaker. CASE We report on a pregnancy in a mother with Sjögren syndrome which was complicated by the development of incomplete fetal heart block, diagnosed by pulsed wave Doppler echocardiography. We started oral dexamethasone treatment to reduce immune-mediated fetal cardiac damage and to prevent complications like hydrops fetalis. CONCLUSION Detection of isolated fetal heart block is possible with pulsed Doppler sonography, but there are no clear recommendations for treatment.
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Affiliation(s)
- A Hagen
- Center for Prenatal Diagnosis Kudamm-199, Berlin, Germany.
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Hagen A, Hessabi H, Gorenoi V, Schönermark M. Kosteneffektivitätsbewertung Prädiktiver Molekulardiagnostik am Beispiel des Hereditären Nichtpolypösen Kolorektalkarzinoms (HNPCC). Gesundheitswesen 2008; 70:18-27. [DOI: 10.1055/s-2007-1022526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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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Han D, Upton JP, Hagen A, Callahan J, Oakes SA, Papa FR. A kinase inhibitor activates the IRE1alpha RNase to confer cytoprotection against ER stress. Biochem Biophys Res Commun 2007; 365:777-83. [PMID: 18035051 DOI: 10.1016/j.bbrc.2007.11.040] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2007] [Accepted: 11/12/2007] [Indexed: 01/10/2023]
Abstract
Unfolded proteins in the endoplasmic reticulum (ER) cause trans-autophosphorylation of the bifunctional transmembrane kinase IRE1alpha, inducing its RNase activity to splice XBP1 mRNA, in turn triggering a transcriptional program in the unfolded protein response (UPR). As we previously showed with the yeast IRE1 kinase ortholog, a single missense mutation in the ATP-binding pocket of murine IRE1alpha kinase sensitizes it to the ATP-competitive inhibitor 1NM-PP1, and subordinates RNase activity to the drug. This highly unusual mechanism of kinase signaling requiring kinase domain ligand occupancy-even through an inhibitor-to activate a nearby RNase has therefore been completely conserved through evolution. We also demonstrate that engagement of the drug-sensitized IRE1alpha kinase through this maneuver affords murine cells cytoprotection under ER stress. Thus kinase inhibitors of IRE1alpha are useful for altering the apoptotic outcome to ER stress, and could possibly be developed into drugs to treat ER stress-related diseases.
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Affiliation(s)
- Dan Han
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143-2520, USA
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Czernik C, Stiller B, Hübler M, Hagen A, Henrich W. Hydrops fetalis caused by a large intrapericardial teratoma. Ultrasound Obstet Gynecol 2006; 28:973-6. [PMID: 17051615 DOI: 10.1002/uog.3852] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
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35
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Czernik C, Stiller B, Hübler M, Hagen A, Henrich W. Hydrops fetalis verursacht durch ein großes intraperikardiales Teratom: Eine interdisziplinäre Herausforderung. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-946240] [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: 10/19/2022]
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Schmid O, Hagen A, Sarioglu N, Hopp H, Entezami M, Albig M, Becker R. Early diagnosis of conjoined twins by real-time three-dimensional ultrasound--case report and review of the literature. Ultraschall Med 2006; 27:384-8. [PMID: 16612786 DOI: 10.1055/s-2005-858357] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In 1:50 000 to 1:100 000 births, conjoined twins occur, caused by incomplete division of the embryonic disc more than 13 days after fertilisation. We present a case of cephalothoracopagus janiceps, a very rare form of conjoined twins, which was diagnosed at 13 weeks of gestation. Three-dimensional and colour Doppler ultrasound enabled precise prenatal visualisation of the fusion of the foetal head and chest up to the umbilicus. We could demonstrate the presence of two foetal hearts connected by an arterio-arterial shunt as well as two pairs of upper and lower extremities. After the clear 3-D presentation of the anomaly, making the poor prognosis visible, the mother decided to have the pregnancy terminated. Autopsy confirmed the prenatal diagnosis.
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Affiliation(s)
- O Schmid
- Charité--Campus Benjamin Franklin, Department of Obstetrics and Gynecology, Berlin, Germany.
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37
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Gorenoi V, Dintsios CM, Hagen A. Beschichtete versus unbeschichtete Stents bei koronarer Herzkrankheit. Gesundheitswesen 2006. [DOI: 10.1055/s-2006-948603] [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: 10/28/2022]
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38
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Czernik C, Stiller B, Hübler M, Hagen A, Henrich W. Hydrops fetalis verursacht durch ein großes intraperikardiales Teratom: Eine interdisziplinäre Herausforderung. Z Geburtshilfe Neonatol 2006. [DOI: 10.1055/s-2006-943325] [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: 10/19/2022]
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Perfetti L, Kampfrath T, Schapper F, Hagen A, Hertel T, Aguirre CM, Desjardins P, Martel R, Frischkorn C, Wolf M. Ultrafast dynamics of delocalized and localized electrons in carbon nanotubes. Phys Rev Lett 2006; 96:027401. [PMID: 16486638 DOI: 10.1103/physrevlett.96.027401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2005] [Indexed: 05/06/2023]
Abstract
We report on the dynamics of the dielectric function of single-wall carbon nanotubes in the 10-30 THz frequency range after ultrafast laser excitation. The absence of a distinct free-carrier response is attributed to the photogeneration of strongly bound excitons in the tubes with large energy gaps. We find a feature of enhanced transmission caused by the blocking of optical transitions in small-gap tubes. The rapid decay of a featureless background with pronounced dichroism is associated with the increased absorption of spatially localized charge carriers before thermalization is completed.
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Affiliation(s)
- L Perfetti
- Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany
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Martins RV, Hagen A, Honkimäki V, Poulsen HF, Feidenhans'l R. In-situ study of residual strain in solid oxide fuel cells. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305083029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hagen A, Pritze W, Loddenkemper C, Ebert AD. Die arteriovenöse Malformation (AVM) als uterine Gefäßfehlbildung. Geburtshilfe Frauenheilkd 2005. [DOI: 10.1055/s-2005-837455] [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: 10/25/2022] Open
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42
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Entezami M, Weinert I, Albig M, Gasiorek-Wiens A, Becker R, Hagen A, Wegner RD, Stumm M. Die singuläre Nabelarterie - ein Hinweiszeichen auf die Ösophagusatresie? Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-923142] [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: 10/18/2022]
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Entezami M, Krommydakis T, Hagen A, Albig M, Gasiorek-Wiens A, Becker R, Wegner RD, Stumm M. Softmarker für Chromosomenanomalien bei der Fehlbildungsdiagnostik - eine erhebliche Belastung für Schwangere und Arzt! Z Geburtshilfe Neonatol 2005. [DOI: 10.1055/s-2005-923049] [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: 10/18/2022]
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Pujol P, Pol S, Nadeu C, Hagen A, Bourlard H. Comparison and combination of features in a hybrid HMM/MLP and a HMM/GMM speech recognition system. ACTA ACUST UNITED AC 2005. [DOI: 10.1109/tsa.2004.834466] [Citation(s) in RCA: 17] [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: 11/08/2022]
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Hagen A, Albig M, Schmitz L, Hopp H, van Baalen A, Becker R, Entezami M. Prenatal Diagnosis of Isolated Foramen ovale Obstruction. Fetal Diagn Ther 2004; 20:70-3. [PMID: 15608464 DOI: 10.1159/000081373] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2003] [Accepted: 03/12/2004] [Indexed: 11/19/2022]
Abstract
Premature obstruction of the foramen ovale is a rare but serious clinical entity. Obstruction can be associated with right ventricular failure, fetal hydrops, tricuspid regurgitation, left heart obstructive defects and supraventricular tachycardia. In most cases, the diagnosis is made at the postmortem examination. The etiology is unknown. We discuss 2 prenatal cases with the sole diagnosis of ventricular asymmetry. The right ventricle was dilated and hypertrophic, and the foramen ovale ballooned into the left atrium without color Doppler detection of right-to-left flow. After delivery, the infants had no hydrops or symptoms of cardiac or respiratory distress. Echocardiography demonstrated a structurally normal heart with increased right ventricle dimensions until the 7th day of life. Delivery should be induced if possible in cases of foramen ovale obstruction with signs of cardiac decompensation.
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Affiliation(s)
- A Hagen
- Charité University Medicine Berlin, Campus Benjamin Franklin, Department of Obstetrics and Gynecology, Center of Prenatal Diagnosis Berlin, Germany.
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Hagen A, Dintsios C, Muth C, Krauth C, Gerhardus A. Technologiebewertung vor Markteinführung mittels Analytic Hierarchy Process (AHP) als neue Methode des innovationsbezogenen Health Technology Assessments. Das Beispiel der Biodegradablen Stents. Gesundheitswesen 2004. [DOI: 10.1055/s-2004-833761] [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: 10/19/2022]
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47
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Schmid O, Hopp H, Entezami M, Hagen A. Menagement fetaler Tachykardien. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2003-818300] [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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Hagen A, Albig M, Altinöz H, Hopp H, Entezami M. Pränatale Diagnose einer Obstruktion des Foramen ovale – 2 Fallbeispiele. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2003-818172] [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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Drechsler I, Bangemann N, Schmid O, Hopp H, Hagen A. TRAP (Twin reversed arterial perfusion) Sequenz – ein Fallbericht. Z Geburtshilfe Neonatol 2004. [DOI: 10.1055/s-2003-818170] [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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Hagen A, Schneider E, Kleinert A, Roessner F. Modification of acid supports by solid-state redox reactionPart I. Preparation and characterization. J Catal 2004. [DOI: 10.1016/j.jcat.2003.10.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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