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Karki S, Adviento-Borbe MAA, Runkle BRK, Moreno-García B, Anders M, Reba ML. Multiyear methane and nitrous oxide emissions in different irrigation management under long-term continuous rice rotation in Arkansas. J Environ Qual 2023; 52:558-572. [PMID: 36504408 DOI: 10.1002/jeq2.20444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 12/01/2022] [Indexed: 05/06/2023]
Abstract
Rice paddies are one of the major sources of anthropogenic methane (CH4 ) emissions. The alternate wetting and drying (AWD) irrigation management has been shown to reduce CH4 emissions and total global warming potential (GWP) (CH4 and nitrous oxide [N2 O]). However, there is limited information about utilizing AWD management to reduce greenhouse gas (GHG) emissions from commercial-scale continuous rice fields. This study was conducted for five consecutive growing seasons (2015-2019) on a pair of adjacent fields in a commercial farm in Arkansas under long-term continuous rice rotation irrigated with either continuously flooded (CF) or AWD conditions. The cumulative CH4 emissions in the growing season across the two fields and 5 years ranged from 41 to 123 kg CH4 -C ha-1 for CF and 1 to 73 kg CH4 -C ha-1 for AWD. On average, AWD reduced CH4 emissions by 73% relative to CH4 emissions in CF fields. Compared to N2 O emissions, CH4 emissions dominated the GWP with an average contribution of 91% in both irrigation treatments. There was no significant variation in grain yield (7.3-11.9 Mg ha-1 ) or growing season N2 O emissions (-0.02 to 0.51 kg N2 O-N ha-1 ) between the irrigation treatments. The yield-scaled GWP was 368 and 173 kg CO2 eq. Mg-1 season-1 for CF and AWD, respectively, showing the feasibility of AWD on a commercial farm to reduce the total GHG emissions while sustaining grain yield. Seasonal variations of GHG emissions observed within fields showed total GHG emissions were predominantly influenced by weather (precipitation) and crop and irrigation management. The influence of air temperature and floodwater heights on GHG emissions had high degree of variability among years and fields. These findings demonstrate that the use of multiyear GHG emission datasets could better capture variability of GHG emissions associated with rice production and could improve field verification of GHG emission models and scaling factors for commercial rice farms.
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Affiliation(s)
- S Karki
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - M A A Adviento-Borbe
- Delta Water Management Research Unit, U.S. Department of Agriculture-Agricultural Research Service, Jonesboro, Arkansas, USA
| | - B R K Runkle
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - B Moreno-García
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - M Anders
- Net-Profit Crop Consultant PLLC, Casscoe, Arkansas, USA
| | - M L Reba
- Delta Water Management Research Unit, U.S. Department of Agriculture-Agricultural Research Service, Jonesboro, Arkansas, USA
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Buday J, Albrecht J, Podgorná G, Mareš T, Le T, Čapek V, Mahrík J, Pol M, Raboch J, Anders M. Seizure threshold manipulation in electroconvulsive therapy via repetitive transcranial magnetic stimulation. A novel way of augmentation? Brain Stimul 2020; 13:1631-1638. [DOI: 10.1016/j.brs.2020.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/17/2020] [Accepted: 09/17/2020] [Indexed: 11/28/2022] Open
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Tume S, Anders M, Dreyer W, Adachi I, Justino H, Qureshi A. Percutaneous Impella Device for Mechanical Circulatory Support in Children with Cardiogenic Shock: Long Term Outcomes. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.859] [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: 10/24/2022] Open
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Albrecht J, Buday J, Mareš T, Kališová L, Raboch J, Anders M. Lowering the seizure threshold in electroconvulsive therapy using transcranial magnetic stimulation: A case report. Brain Stimul 2019; 12:781-784. [PMID: 30738776 DOI: 10.1016/j.brs.2019.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/09/2019] [Accepted: 01/18/2019] [Indexed: 10/27/2022] Open
Abstract
We demonstrate the feasibility of lowering the seizure threshold using a combined approach of electroconvulsive therapy and transcranial magnetic stimulation. High-frequency transcranial magnetic stimulation of the supplementary motor area shortly before each electroconvulsive treatment session resulted in a reduction of the seizure threshold by half in a male patient with a severe psychotic depressive episode of bipolar affective disorder.
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Affiliation(s)
- J Albrecht
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czechia.
| | - J Buday
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czechia
| | - T Mareš
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czechia
| | - L Kališová
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czechia
| | - J Raboch
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czechia
| | - M Anders
- Department of Psychiatry, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czechia
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Cavanna F, Depalo R, Aliotta M, Anders M, Bemmerer D, Best A, Boeltzig A, Broggini C, Bruno CG, Caciolli A, Corvisiero P, Davinson T, di Leva A, Elekes Z, Ferraro F, Formicola A, Fülöp Z, Gervino G, Guglielmetti A, Gustavino C, Gyürky G, Imbriani G, Junker M, Menegazzo R, Mossa V, Pantaleo FR, Prati P, Scott DA, Somorjai E, Straniero O, Strieder F, Szücs T, Takács MP, Trezzi D. Erratum: Three New Low-Energy Resonances in the ^{22}Ne(p,γ)^{23}Na Reaction [Phys. Rev. Lett. 115, 252501 (2015)]. Phys Rev Lett 2018; 120:239901. [PMID: 29932705 DOI: 10.1103/physrevlett.120.239901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Indexed: 06/08/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.115.252501.
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Puri K, Causey J, Tume S, Moffett B, Anders M. Characteristics and Outcomes of Pediatric Patients Supported with Ventricular Assist Device - A Multi-institutional Analysis. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1046] [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: 10/17/2022] Open
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Hackl C, Schacherer D, Anders M, Wiedemann LM, Mohr A, Schlitt HJ, Stroszczynski C, Tranquart F, Jung EM. Improved Detection of preclinical Colorectal Liver Metastases by High Resolution Ultrasound including Molecular Ultrasound Imaging using the targeted Contrast Agent BR55. Ultraschall Med 2016; 37:290-296. [PMID: 27112624 DOI: 10.1055/s-0041-111838] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE Aim of the present study was to investigate the sensitivity of high resolution ultrasound (HRU), standard contrast-enhanced ultrasound (CEUS) and CEUS using a novel vascular endothelial growth factor receptor 2 (VEGFR2)-targeted contrast agent for the detection of hepatic metastases in a mouse model of colorectal cancer using clinical standard technology. MATERIALS AND METHODS The human colon cancer cell line HT29, transfected with luciferase cDNA for in vivo bioluminescence monitoring, was injected intrasplenically into CB17.SCID mice. Mice were monitored weekly by bioluminescence and after 2 and 4.5 weeks by HRU and CEUS. Contrast media (untargeted BR1, targeted BR55) was applied and digital cine loops from the arterial phase (15 - 45 sec), portal venous phase (50 - 120 s) and late phases (3 - 5 min, 1hour) of the whole liver were analyzed. Data were correlated with postmortem histopathology. RESULTS Without contrast enhancement, lesions > 4 mm were reliably detected. After use of untargeted CEUS, lesions > 2 mm were reliably detected and enhanced rim vascularization and late-phase wash-out was shown. With BR55, lesions > 0.8 mm were reliably detected with excellent documentation of vascularization. A persistent contrast enhancement was seen > 30 min after injection. Contrast-enhancement patterns with BR55 significantly correlated with CD31 (R2 = 0.74) and VEGFR2-immunohistochemistry (R2 = 0.66). CONCLUSION Detection of metastases by HRU and CEUS was earlier and more accurate than monitoring via bioluminescence. In vivo monitoring of hepatic micrometastases can thus be performed without prior modification of cancer cells using standard technology.
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Affiliation(s)
- C Hackl
- Surgery, University Hospital Regensburg, Germany
| | - D Schacherer
- Internal Medicine I, University Hospital Regensburg, Germany
| | - M Anders
- Surgery, University Hospital Regensburg, Germany
| | | | - A Mohr
- Internal Medicine II, University Hospital Regensburg, Germany
| | - H J Schlitt
- Surgery, University Hospital Regensburg, Germany
| | | | - F Tranquart
- Geneva Research Center and Manufacturing Site, Bracco Suisse SA, Geneva, Switzerland
| | - E M Jung
- Radiology, University Hospital Regensburg, Germany
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Zhao B, Maquilan G, Anders M, Jiang S, Schwartz D. SU-F-J-18: Feasibility of Open Mask Immobilization with Optical Imaging Guidance (OIG) for H&N Radiotherapy. Med Phys 2016. [DOI: 10.1118/1.4955926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Cavanna F, Depalo R, Aliotta M, Anders M, Bemmerer D, Best A, Boeltzig A, Broggini C, Bruno CG, Caciolli A, Corvisiero P, Davinson T, di Leva A, Elekes Z, Ferraro F, Formicola A, Fülöp Z, Gervino G, Guglielmetti A, Gustavino C, Gyürky G, Imbriani G, Junker M, Menegazzo R, Mossa V, Pantaleo FR, Prati P, Scott DA, Somorjai E, Straniero O, Strieder F, Szücs T, Takács MP, Trezzi D. Three New Low-Energy Resonances in the ^{22}Ne(p,γ)^{23}Na Reaction. Phys Rev Lett 2015; 115:252501. [PMID: 26722918 DOI: 10.1103/physrevlett.115.252501] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Indexed: 06/05/2023]
Abstract
The ^{22}Ne(p,γ)^{23}Na reaction takes part in the neon-sodium cycle of hydrogen burning. This cycle affects the synthesis of the elements between ^{20}Ne and ^{27}Al in asymptotic giant branch stars and novae. The ^{22}Ne(p,γ)^{23}Na reaction rate is very uncertain because of a large number of unobserved resonances lying in the Gamow window. At proton energies below 400 keV, only upper limits exist in the literature for the resonance strengths. Previous reaction rate evaluations differ by large factors. In the present work, the first direct observations of the ^{22}Ne(p,γ)^{23}Na resonances at 156.2, 189.5, and 259.7 keV are reported. Their resonance strengths are derived with 2%-7% uncertainty. In addition, upper limits for three other resonances are greatly reduced. Data are taken using a windowless ^{22}Ne gas target and high-purity germanium detectors at the Laboratory for Underground Nuclear Astrophysics in the Gran Sasso laboratory of the National Institute for Nuclear Physics, Italy, taking advantage of the ultralow background observed deep underground. The new reaction rate is a factor of 20 higher than the recent evaluation at a temperature of 0.1 GK, relevant to nucleosynthesis in asymptotic giant branch stars.
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Affiliation(s)
- F Cavanna
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - R Depalo
- Università degli Studi di Padova and INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - M Aliotta
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3FD Edinburgh, United Kingdom
| | - M Anders
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany
- Technische Universität Dresden, Institut für Kern- und Teilchenphysik, Zellescher Weg 19, 01069 Dresden, Germany
| | - D Bemmerer
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany
| | - A Best
- Laboratori Nazionali del Gran Sasso (LNGS), 67100 Assergi (AQ), Italy
| | - A Boeltzig
- Gran Sasso Science Institute, 67100 LAquila, Italy
| | - C Broggini
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - C G Bruno
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3FD Edinburgh, United Kingdom
| | - A Caciolli
- Università degli Studi di Padova and INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - P Corvisiero
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - T Davinson
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3JZ Edinburgh, United Kingdom
| | - A di Leva
- Università di Napoli Federico II and INFN, Sezione di Napoli, 80126 Napoli, Italy
| | - Z Elekes
- Institute for Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - F Ferraro
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - A Formicola
- Laboratori Nazionali del Gran Sasso (LNGS), 67100 Assergi (AQ), Italy
| | - Zs Fülöp
- Institute for Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - G Gervino
- Università degli Studi di Torino and INFN, Sezione di Torino, Via P. Giuria 1, 10125 Torino, Italy
| | - A Guglielmetti
- Università degli Studi di Milano and INFN, Sezione di Milano, Via G. Celoria 16, 20133 Milano, Italy
| | - C Gustavino
- INFN, Sezione di Roma La Sapienza, Piazzale A. Moro 2, 00185 Roma, Italy
| | - Gy Gyürky
- Institute for Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - G Imbriani
- Università di Napoli Federico II and INFN, Sezione di Napoli, 80126 Napoli, Italy
| | - M Junker
- Laboratori Nazionali del Gran Sasso (LNGS), 67100 Assergi (AQ), Italy
| | - R Menegazzo
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - V Mossa
- Università degli Studi di Bari and INFN, Sezione di Bari, 70125 Bari, Italy
| | - F R Pantaleo
- Università degli Studi di Bari and INFN, Sezione di Bari, 70125 Bari, Italy
| | - P Prati
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - D A Scott
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3JZ Edinburgh, United Kingdom
| | - E Somorjai
- Institute for Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - O Straniero
- Osservatorio Astronomico di Collurania, Teramo, and INFN, Sezione di Napoli, Napoli, Italy
| | - F Strieder
- Institut für Experimentalphysik III, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - T Szücs
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany
| | - M P Takács
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany
- Technische Universität Dresden, Institut für Kern- und Teilchenphysik, Zellescher Weg 19, 01069 Dresden, Germany
| | - D Trezzi
- Università degli Studi di Milano and INFN, Sezione di Milano, Via G. Celoria 16, 20133 Milano, Italy
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Denzer U, Hinsch A, Steurer S, Groth S, Anders M, Schachschal G, Rösch T, Vieth M, Sterlacci W. EUS Punktion: Prospektiv randomisierter Vergleich von Procore® Biopsie (22G) und Aspirationsfeinnadelzytolgie (22G) bei Raumforderungen unklarer Dignität. Z Gastroenterol 2015. [DOI: 10.1055/s-0035-1559024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ebert T, Hopf LM, Wurst U, Bachmann A, Kralisch S, Lössner U, Platz M, Kratzsch J, Stolzenburg JU, Dietel A, Grisk O, Beige J, Anders M, Bast I, Klöting N, Blüher M, Stumvoll M, Fasshauer M. Circulating adipocyte fatty acid binding protein is increased in chronic and acute renal dysfunction. Nutr Metab Cardiovasc Dis 2014; 24:1027-1034. [PMID: 24813306 DOI: 10.1016/j.numecd.2014.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 03/14/2014] [Accepted: 03/17/2014] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND AIMS The adipokine adipocyte fatty acid binding protein (AFABP) is positively associated with the development of the metabolic syndrome, diabetes mellitus, and cardiovascular disease. We hypothesized that AFABP also increases with deteriorating renal function. METHODS AND RESULTS Serum AFABP levels were quantified by enzyme linked immunosorbent assay in 532 patients with chronic kidney disease (CKD) covering the whole spectrum of estimated glomerular filtration rate (eGFR) categories from G1 to G5 (study population 1). Furthermore, AFABP was measured in 32 patients before and within 30 h after elective unilateral nephrectomy, a model of acute kidney dysfunction (AKD) (study population 2). Moreover, circulating AFABP was investigated in rats undergoing bilateral nephrectomy (BNE) as compared to sham-operated animals. Median serum AFABP levels adjusted for age, gender, and body mass index significantly increased with increasing eGFR category (G1: 22.0 μg/l; G2: 34.6 μg/l; G3: 56.7 μg/l; G4: 95.2 μg/l; and G5: 173.9 μg/l). Furthermore, renal dysfunction remained positively associated with AFABP in multivariate analysis in this cohort. In patients undergoing unilateral nephrectomy, AFABP increased significantly after surgery (42.1 μg/l) as compared to pre-surgical values (29.3 μg/l). Furthermore, relative changes of post-to-pre-surgical AFABP levels were independently associated with relative changes of post-to-pre-surgical creatinine concentrations. After BNE in rats, AFABP increased significantly as compared to sham-operated animals. CONCLUSIONS We show that AFABP is significantly elevated in CKD and AKD patients. Furthermore, measures of renal function are associated with circulating AFABP. Moreover, animal experiments indicate that AFABP levels strongly depend on renal function.
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Affiliation(s)
- T Ebert
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany.
| | - L M Hopf
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
| | - U Wurst
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
| | - A Bachmann
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany
| | - S Kralisch
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
| | - U Lössner
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
| | - M Platz
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
| | - J Kratzsch
- University of Leipzig, Institute of Laboratory Medicine, 04103 Leipzig, Germany
| | - J U Stolzenburg
- University of Leipzig, Department of Urology, 04103 Leipzig, Germany
| | - A Dietel
- University of Leipzig, Department of Urology, 04103 Leipzig, Germany
| | - O Grisk
- University of Greifswald, Department of Physiology, 17495 Greifswald, Karlsburg, Germany
| | - J Beige
- Hospital St. Georg, Division of Nephrology and KfH Renal Unit, 04129 Leipzig, Germany
| | - M Anders
- Outpatient Nephrology Care Unit, 04107 and 04178 Leipzig, Germany
| | - I Bast
- Outpatient Nephrology Care Unit, 04107 and 04178 Leipzig, Germany
| | - N Klöting
- Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
| | - M Blüher
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany
| | - M Stumvoll
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany
| | - M Fasshauer
- University of Leipzig, Department of Endocrinology and Nephrology, 04103 Leipzig, Germany; Leipzig University Medical Center, IFB AdiposityDiseases, 04103 Leipzig, Germany
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Chan-Dominy ACF, Anders M, Millar J, Horton S, Best D, Brizard C, D'Udekem Y, Hilton A, Butt W. Extracorporeal membrane modality conversions. Perfusion 2014; 30:291-4. [PMID: 25070898 DOI: 10.1177/0267659114544486] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We report the case of a patient with cardiovascular and respiratory failure due to severe anaphylaxis requiring multiple extracorporeal membrane oxygenation (ECMO) cannulation strategies to provide adequate oxygen delivery and ventilatory support during a period of rapid physiological change. ECMO provides partial or complete support of oxygenation-ventilation and circulation. The choice of which ECMO modality to use is governed by anatomical (vessel size, cardiovascular anatomy and previous surgeries) and physiological (respiratory and/or cardiac failure) factors. The urgency with which ECMO needs to be implemented (emergency cardiopulmonary resuscitation (eCPR), urgent, elective) and the institutional experience will also influence the type of ECMO provided. Here we describe a 12-year-old schoolgirl who, having been resuscitated with peripheral veno-venous (VV) ECMO for severe hypoxemia due to status asthmaticus in the setting of acute anaphylaxis, required escalation to peripheral veno-arterial (VA) ECMO for precipitous cardiovascular deterioration. Insufficient oxygen delivery for adequate cellular metabolic function and possible cerebral hypoxia due to significant differential hypoxia necessitated ECMO modification. After six days of central (transthoracic) VA ECMO support and 21 days of intensive care unit (ICU) care, she made a complete recovery with no neurological sequelae. The use of ECMO support warrants careful consideration of the interplay of a patient's pathophysiology and extracorporeal circuit dynamics. Particular emphasis should be placed on the potential for mismatch between cardiovascular and respiratory support as well as the need to meet metabolic demands through adequate cerebral, coronary and systemic oxygenation. Cannulation strategies occasionally require alteration to meet and anticipate the patient's evolving needs.
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Affiliation(s)
- A C F Chan-Dominy
- Intensive Care Unit, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - M Anders
- Intensive Care Unit, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - J Millar
- Intensive Care Unit, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - S Horton
- Department of Cardiac Surgery, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - D Best
- Intensive Care Unit, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - C Brizard
- Department of Cardiac Surgery, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Y D'Udekem
- Department of Cardiac Surgery, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - A Hilton
- Department of Intensive Care, Austin Hospital, Melbourne, VIC 3084, Australia
| | - W Butt
- Intensive Care Unit, Royal Children's Hospital, Melbourne, VIC 3052, Australia
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Anders M, Trezzi D, Menegazzo R, Aliotta M, Bellini A, Bemmerer D, Broggini C, Caciolli A, Corvisiero P, Costantini H, Davinson T, Elekes Z, Erhard M, Formicola A, Fülöp Z, Gervino G, Guglielmetti A, Gustavino C, Gyürky G, Junker M, Lemut A, Marta M, Mazzocchi C, Prati P, Rossi Alvarez C, Scott DA, Somorjai E, Straniero O, Szücs T. First direct measurement of the 2H(α,γ)6Li cross section at big bang energies and the primordial lithium problem. Phys Rev Lett 2014; 113:042501. [PMID: 25105610 DOI: 10.1103/physrevlett.113.042501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Indexed: 06/03/2023]
Abstract
Recent observations of (6)Li in metal poor stars suggest a large production of this isotope during big bang nucleosynthesis (BBN). In standard BBN calculations, the (2)H(α,γ)(6)Li reaction dominates (6)Li production. This reaction has never been measured inside the BBN energy region because its cross section drops exponentially at low energy and because the electric dipole transition is strongly suppressed for the isoscalar particles (2)H and α at energies below the Coulomb barrier. Indirect measurements using the Coulomb dissociation of (6)Li only give upper limits owing to the dominance of nuclear breakup processes. Here, we report on the results of the first measurement of the (2)H(α,γ)(6)Li cross section at big bang energies. The experiment was performed deep underground at the LUNA 400 kV accelerator in Gran Sasso, Italy. The primordial (6)Li/(7)Li isotopic abundance ratio has been determined to be (1.5 ± 0.3) × 10(-5), from our experimental data and standard BBN theory. The much higher (6)Li/(7)Li values reported for halo stars will likely require a nonstandard physics explanation, as discussed in the literature.
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Affiliation(s)
- M Anders
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany and Technische Universität Dresden, Mommsenstrasse 9, 01069 Dresden, Germany
| | - D Trezzi
- Università degli Studi di Milano and INFN, Sezione di Milano, Via G. Celoria 16, 20133 Milano, Italy
| | - R Menegazzo
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - M Aliotta
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3JZ Edinburgh, United Kingdom
| | - A Bellini
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - D Bemmerer
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - C Broggini
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - A Caciolli
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - P Corvisiero
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - H Costantini
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - T Davinson
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3JZ Edinburgh, United Kingdom
| | - Z Elekes
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - M Erhard
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - A Formicola
- Laboratori Nazionali del Gran Sasso (LNGS), Via G. Acitelli 22, 67100 Assergi, Italy
| | - Zs Fülöp
- Institute of Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - G Gervino
- Università degli Studi di Torino and INFN, Sezione di Torino, Via P. Giuria 1, 10125 Torino, Italy
| | - A Guglielmetti
- Università degli Studi di Milano and INFN, Sezione di Milano, Via G. Celoria 16, 20133 Milano, Italy
| | - C Gustavino
- INFN, Sezione di Roma "La Sapienza", Piazzale A. Moro 2, 00185 Roma, Italy
| | - Gy Gyürky
- Institute of Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - M Junker
- Laboratori Nazionali del Gran Sasso (LNGS), Via G. Acitelli 22, 67100 Assergi, Italy
| | - A Lemut
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - M Marta
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - C Mazzocchi
- Università degli Studi di Milano and INFN, Sezione di Milano, Via G. Celoria 16, 20133 Milano, Italy
| | - P Prati
- Università degli Studi di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - C Rossi Alvarez
- INFN, Sezione di Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - D A Scott
- SUPA, School of Physics and Astronomy, University of Edinburgh, EH9 3JZ Edinburgh, United Kingdom
| | - E Somorjai
- Institute of Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
| | - O Straniero
- Osservatorio Astronomico di Collurania, Via M. Maggini, 64100 Teramo, Italy and INFN, Sezione di Napoli, Via Cintia, 80126 Napoli, Italy
| | - T Szücs
- Institute of Nuclear Research (MTA ATOMKI), PO Box 51, HU-4001 Debrecen, Hungary
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Ebert T, Hopf LM, Wurst U, Bachmann A, Lößner U, Kratzsch J, Stolzenburg JU, Dietel A, Beige J, Anders M, Bast I, Blüher M, Stumvoll M, Fasshauer M, Kralisch S. Serum levels of the adipokine adipocyte fatty acid binding protein are increased in chronic and acute renal dysfunction. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1375032] [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]
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15
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Massarczyk R, Schwengner R, Dönau F, Frauendorf S, Anders M, Bemmerer D, Beyer R, Bhatia C, Birgersson E, Butterling M, Elekes Z, Ferrari A, Gooden ME, Hannaske R, Junghans AR, Kempe M, Kelley JH, Kögler T, Matic A, Menzel ML, Müller S, Reinhardt TP, Röder M, Rusev G, Schilling KD, Schmidt K, Schramm G, Tonchev AP, Tornow W, Wagner A. Nuclear deformation and neutron excess as competing effects for dipole strength in the pygmy region. Phys Rev Lett 2014; 112:072501. [PMID: 24579591 DOI: 10.1103/physrevlett.112.072501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Indexed: 06/03/2023]
Abstract
The electromagnetic dipole strength below the neutron-separation energy has been studied for the xenon isotopes with mass numbers A=124, 128, 132, and 134 in nuclear resonance fluorescence experiments using the γELBE bremsstrahlung facility at Helmholtz-Zentrum Dresden-Rossendorf and the HIγS facility at Triangle Universities Nuclear Laboratory Durham. The systematic study gained new information about the influence of the neutron excess as well as of nuclear deformation on the strength in the region of the pygmy dipole resonance. The results are compared with those obtained for the chain of molybdenum isotopes and with predictions of a random-phase approximation in a deformed basis. It turned out that the effect of nuclear deformation plays a minor role compared with the one caused by neutron excess. A global parametrization of the strength in terms of neutron and proton numbers allowed us to derive a formula capable of predicting the summed E1 strengths in the pygmy region for a wide mass range of nuclides.
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Affiliation(s)
- R Massarczyk
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - R Schwengner
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - F Dönau
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - S Frauendorf
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Anders
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - D Bemmerer
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - R Beyer
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - C Bhatia
- Duke University, Durham, North Carolina 27708, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - E Birgersson
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - M Butterling
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Martin-Luther Universität Halle-Wittenberg, 06099 Halle, Germany
| | - Z Elekes
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - A Ferrari
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - M E Gooden
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA and North Carolina State University, Raleigh, North Carolina 27695, USA
| | - R Hannaske
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - A R Junghans
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - M Kempe
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - J H Kelley
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA and North Carolina State University, Raleigh, North Carolina 27695, USA
| | - T Kögler
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - A Matic
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - M L Menzel
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - S Müller
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - T P Reinhardt
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - M Röder
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - G Rusev
- Duke University, Durham, North Carolina 27708, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K D Schilling
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - K Schmidt
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - G Schramm
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany and Technische Universität Dresden, 01062 Dresden, Germany
| | - A P Tonchev
- Duke University, Durham, North Carolina 27708, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - W Tornow
- Duke University, Durham, North Carolina 27708, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - A Wagner
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
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16
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Marciano S, Gaite LA, Bisignano L, Descalzi VI, Yantorno S, Mendizabal M, Silva MO, Anders M, Orozco OF, Traverso R, Gil O, Galdame OA, Bandi JC, de Santibañes E, Gadano AC. Use of liver grafts from anti-hepatitis B core-positive donors: a multicenter study in Argentina. Transplant Proc 2013; 45:1331-4. [PMID: 23726565 DOI: 10.1016/j.transproceed.2012.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 12/04/2012] [Indexed: 12/23/2022]
Abstract
Liver transplantation success is limited by the availability of donors. To overcome this limitation, anti-core-positive donors are increasingly being accepted, but underutilization of this resource still occurs. We performed the current study to determine the prevalence of anti-core-positive donors in our region and to describe the management of these donors and their recipients. Between January 2005 and July 2011, the national transplant database included 2,262 registered liver donors among whom 106 (4.7%) were anti-core-positive including 59 (56%) discarded and 47 (44%) implanted organs. A median of 14.5 offers (range 4-60) were rejected before harvesting and implanting the accepted grafts. The only difference between the implanted and the discarded grafts was found for the alanine aminotransferase level, which was higher among the discarded ones (50 ± 59 UI/L vs 25 ± 16, P < .05). Among 40 recipients included in the study, 5 (12.5%) did not receive any prophylaxis; 18 (45%) a nucleos(t)ide analog 11 (25.5%), heptitis B immunoglobulin and nucleos(t)ide analogs and 6 (15%) pretransplant hepatitis B vaccination. Over a mean follow-up of 871 ± 585 days, 4 de novo hepatitis B cases were identified at 545, 720, 748, and 1,080 days posttransplantation. None of these patients had received any prophylaxis. In all cases entecavir successfully controlled viral replication. We believe that better utilization of these donors and careful management of their recipients represent safe strategies to expand the liver donor pool in Argentina.
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Affiliation(s)
- S Marciano
- Hepatology Unit, Hospital Italiano de Buenos Aires, Argentina.
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Cura CI, Lattes R, Nagel C, Gimenez MJ, Blanes M, Calabuig E, Iranzo A, Barcan LA, Anders M, Schijman AG. Early molecular diagnosis of acute Chagas disease after transplantation with organs from Trypanosoma cruzi-infected donors. Am J Transplant 2013; 13:3253-61. [PMID: 24266974 DOI: 10.1111/ajt.12487] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 07/23/2013] [Accepted: 08/07/2013] [Indexed: 01/25/2023]
Abstract
Organ transplantation (TX) is a novel transmission modality of Chagas disease. The results of molecular diagnosis and characterization of Trypanosoma cruzi acute infection in naïve TX recipients transplanted with organs from infected deceased donors are reported. Peripheral blood and cerebrospinal fluid samples from the TX recipients of organs from infected donors were prospectively and sequentially studied for detection of T. cruzi by means of kinetoplastid DNA polymerase chain reaction (kDNA-PCR). In positive blood samples, a PCR algorithm for identification of T. cruzi Discrete Typing Units (DTUs) and quantitative real-time PCR (qPCR) to quantify parasitic loads were performed. Minicircle signatures of T. cruzi infecting populations were also analyzed using restriction fragment length polymorphism (RFLP)-PCR. Eight seronegative TX recipients from four infected donors were studied. In five, the infection was detected at 68.4 days post-TX (36-98 days). In one case, it was transmitted to two of three TX recipients. The comparison of the minicircle signatures revealed nearly identical RFLP-PCR profiles, confirming a common source of infection. The five cases were infected by DTU TcV. This report reveals the relevance of systematic monitoring of TX recipients using PCR strategies in order to provide an early diagnosis allowing timely anti-trypanosomal treatment.
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Affiliation(s)
- C I Cura
- Laboratorio de Biología Molecular de la Enfermedad de Chagas, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"-INGEBI-CONICET, Buenos Aires, Argentina
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Sauer N, Aberle J, Reining F, Pezold J, Anders M, Groth S, Schachschal G, Mann O, Rösch T. A new endoscopically implantable device (SatiSphere) for treatment of obesity. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Beck PA, Anders M, Watkins B, Gunter SA, Hubbell D, Gadberry MS. 2011 and 2012 Early Careers Achievement Awards: improving the production, environmental, and economic efficiency of the stocker cattle industry in the southeastern United States. J Anim Sci 2012; 91:2456-66. [PMID: 23243161 DOI: 10.2527/jas.2012-5873] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Grazing forages on small-grain fields can be a profitable "second crop" for grain producers and an opportunity for cow-calf producers to retain ownership of weaned calves. The increasing costs of conventional tillage and movement of soil nutrients into surface water creates a need for more sustainable production practices to be incorporated by producers into wheat pasture production systems. Research at the Livestock and Forestry Research Station near Batesville, AR, and the Southwest Research and Extension Center near Hope, AR, has been conducted over a 9-yr span to characterize the impacts of pasture systems on forage production, animal performance, soil quality, water runoff, and the economics associated with the stocker cattle enterprises. Gains of growing cattle grazing nontoxic endophyte-infected tall fescue and small-grain forages can be increased by 80 and 150%, respectively, compared with grazing Bermuda grass or toxic endophyte-infected tall fescue. Producers grazing spring-calving cowherds can use these improved forages to accelerate stocker performance when retaining calves in the fall and improve net returns by 99% with winter annual or nontoxic tall fescue production systems compared with Bermuda grass or toxic tall fescue. Rainfall simulation of small grain pastures indicates that runoff volume and nutrient load does not differ between conventionally tilled fields and no-till fields in the spring before tillage when soil surface cover is similar. In the fall after tillage, however, conventionally tilled fields had 4 times greater runoff; hence, there was 1.9 times greater N runoff and 3.2 times greater P runoff in conventionally tilled fields compared with no-till. Total natural rainfall runoff from conventionally tilled wheat fields were 2 times greater than from no-till fields with 25 mm rainfall events yet were 4 times greater with 62-mm rainfall events. Soil analysis shows that soil aggregate content was greater in no-till compared with conventional till, indicating greater soil porosity, improved water infiltration rate, and reduced erositivity of soil. Carbon concentration in no-till soils was 50% greater than conventional tillage after 9 yr. These experiments show that production systems can be designed that maintain livestock production, increase soil quality, reduce nutrient discharge, and promote improved economic returns.
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Affiliation(s)
- P A Beck
- University of Arkansas Division of Agriculture, Southwest Research and Extension Center, Hope 71801, USA.
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Scott DA, Caciolli A, Di Leva A, Formicola A, Aliotta M, Anders M, Bemmerer D, Broggini C, Campeggio M, Corvisiero P, Elekes Z, Fülöp Z, Gervino G, Guglielmetti A, Gustavino C, Gyürky G, Imbriani G, Junker M, Laubenstein M, Menegazzo R, Marta M, Napolitani E, Prati P, Rigato V, Roca V, Somorjai E, Salvo C, Straniero O, Strieder F, Szücs T, Terrasi F, Trezzi D. First direct measurement of the 17O(p,γ)18F reaction cross section at Gamow energies for classical novae. Phys Rev Lett 2012; 109:202501. [PMID: 23215474 DOI: 10.1103/physrevlett.109.202501] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Indexed: 06/01/2023]
Abstract
Classical novae are important contributors to the abundances of key isotopes, such as the radioactive (18)F, whose observation by satellite missions could provide constraints on nucleosynthesis models in novae. The (17)O(p,γ)(18)F reaction plays a critical role in the synthesis of both oxygen and fluorine isotopes, but its reaction rate is not well determined because of the lack of experimental data at energies relevant to novae explosions. In this study, the reaction cross section has been measured directly for the first time in a wide energy range E(c.m.)~/= 200-370 keV appropriate to hydrogen burning in classical novae. In addition, the E(c.m.)=183 keV resonance strength, ωγ=1.67±0.12 μeV, has been measured with the highest precision to date. The uncertainty on the (17)O(p,γ)(18)F reaction rate has been reduced by a factor of 4, thus leading to firmer constraints on accurate models of novae nucleosynthesis.
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Affiliation(s)
- D A Scott
- SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
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McCormack L, Quiñónez E, Goldaracena N, Anders M, Rodríguez V, Orozco Ganem F, Mastai RC. Liver transplantation using Chagas-infected donors in uninfected recipients: a single-center experience without prophylactic therapy. Am J Transplant 2012; 12:2832-7. [PMID: 22813351 DOI: 10.1111/j.1600-6143.2012.04160.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Organ shortage is the first cause of death on liver transplant waiting lists. As a consequence, we recently decided to expand liver acceptance to those organs that could potentially transmit infectious diseases to their recipients. On January 2010, we initiated a prospective protocol using livers from Chagas-infected donors for transplanting uninfected recipients without using prophylactic therapy. During a 13-month period, 9 of 37 (24%) liver transplants were performed within this protocol. After transplant, each recipient was sequentially and strictly monitored for infection transmission using the Strout method and promptly treated with benznidazole if this occurs. During follow-up, two patients died without Chagas infection and only two (donor-derived T. cruzi transmission rate: 2/9; 22%) patients developed donor-derived Chagas transmission without clinical symptoms. The median follow-up time of the seven live patients was 15 months (range: 13-20). At present, all are symptoms-free with excellent allograft function and without evidence of Chagas disease. In conclusion, we consider that Chagas-infected donors are a promising source of liver grafts that could reduce the growing mortality on liver waiting lists in America. Relevant data from larger prospective studies are required to confirm these preliminary excellent results.
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Affiliation(s)
- L McCormack
- Liver Surgery and Transplantation Unit, Hospital Alemán of Buenos Aires, Buenos Aires, Argentina.
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Goldaracena N, Quiñonez E, Méndez P, Anders M, Orozco Ganem F, Mastai R, McCormack L. Extremely Marginal Liver Grafts From Deceased Donors Have Outcome Similar to Ideal Grafts. Transplant Proc 2012; 44:2219-22. [DOI: 10.1016/j.transproceed.2012.07.113] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [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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Stecker K, Vieth M, Koschel A, Wiedenmann B, Röcken C, Anders M. Impact of the coxsackievirus and adenovirus receptor on the adenoma-carcinoma sequence of colon cancer. Br J Cancer 2011; 104:1426-33. [PMID: 21468049 PMCID: PMC3101933 DOI: 10.1038/bjc.2011.116] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [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] [Indexed: 12/29/2022] Open
Abstract
Background: Coxsackie and adenovirus receptor (CAR) has been suggested to function as a tumour suppressor. Its impact on the adenoma–carcinoma sequence of the colon, however, is unclear. Methods: Coxsackie and adenovirus receptor was analysed in non-cancerous and neoplastic colon samples using immunohistochemistry and quantitative RT–PCR. The function of CAR in colon cancer cell lines was determined following application of CAR siRNA or ectopic expression of a human full-length CAR cDNA. Results: Compared with healthy mucosa, increased CAR-mRNA expression was found in adenomas, whereas primary cancers and metastases displayed a marked decline. At the plasma membrane, CAR was present in normal mucosa samples (93%), adenomas, and metastases (100% ea.), whereas in colon cancers, it was found less frequently (49%, P<0.0001). Cytoplasmic CAR immunopositivity increased from normal mucosa (22%), to adenomas (73%, P=0.0006), primary cancers (83%, P<0.0001), and metastases (67%, P=0.0019). In cancer cell lines, CAR inhibition resulted in increased proliferation, whereas enforced ectopic CAR expression led to opposite results. Blocking the extracellular portion of CAR increased cell invasion in vitro. In mice, xenotransplants of colon cancer cells with enforced CAR expression formed significantly smaller tumours, whereas CAR inhibition increased the formation of liver metastases. Conclusion: We conclude that CAR facilitates complex effects during colon carcinogenesis, potentially mediated by its stage-dependent subcellular distribution; high CAR expression potentially prevents apoptosis in adenomas, loss of CAR at the plasma membrane promotes growth, and dissemination of primary cancers, and high membranous CAR presence may support the establishment of distant metastases.
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Affiliation(s)
- K Stecker
- Department of Internal Medicine, Divisions of Gastroenterology and Hepatology, Charité Medical School, Campus Virchow, Augustenburgerplatz 1, Berlin 13353, Germany
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Warich J, Anders M, Scheunert S, Engemann A, Zanuzdana A, Khan M, Krämer A. Changing food patterns in developing countries: Income is related to Body Mass Index (BMI) and nutritional status among the urban and rural population of Dhaka, Bangladesh. Gesundheitswesen 2010. [DOI: 10.1055/s-0030-1266673] [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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Bajbouj M, Vieth M, Rösch T, Miehlke S, Becker V, Anders M, Pohl H, Madisch A, Schuster T, Schmid RM, Meining A. Probe-based confocal laser endomicroscopy compared with standard four-quadrant biopsy for evaluation of neoplasia in Barrett's esophagus. Endoscopy 2010; 42:435-40. [PMID: 20506064 DOI: 10.1055/s-0029-1244194] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [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: 01/29/2023]
Abstract
BACKGROUND AND STUDY AIMS Surveillance of Barrett's esophagus includes endoscopic inspection with biopsy of suspicious lesions followed by four-quadrant biopsy of the remaining mucosa. We assessed the ability of probe-based confocal laser endomicroscopy (pCLE) to replace biopsy in the endoscopic evaluation of patients with Barrett's esophagus in a prospective and controlled setting. PATIENTS AND METHODS A total of 68 patients who were referred for endoscopic assessment of Barrett's esophagus were included across three centers. pCLE recordings were interpreted live during the examination as well as in a blinded manner at least 3 months after endoscopy. pCLE diagnosis of neoplasia based on pre-defined criteria was compared with histopathology from suspicious as well as four-quadrant biopsies. RESULTS A total of 670 pairs of biopsies and pCLE video sequences were available for analysis, with neoplasia (high-grade dysplasia or cancer) being histologically diagnosed in 8.3 %. Specificity and negative predictive value of pCLE in excluding neoplasia was 0.97 (90 %CI 0.95 - 0.98) and 0.93 (0.91 - 0.95) for the blinded evaluation, and 0.95 (0.90 - 0.98) and 0.92 (0.90 - 0.94) for the on-site assessment. Positive predictive values (PPVs) and sensitivity were rather poor for both settings (46 %/28 % [blinded] and 18 %/12 % [on-site], respectively). CONCLUSIONS pCLE can be regarded as non-inferior to endoscopic biopsy in excluding neoplasia of Barrett's esophagus mucosa. However, due to its low PPV and sensitivity, pCLE may currently not replace standard biopsy techniques for the diagnosis of Barrett's esophagus and associated neoplasia. Further technical development of pCLE and a better understanding of its role in relation to other imaging technologies are necessary.
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Affiliation(s)
- M Bajbouj
- II Medizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Germany
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Sollböhmer O, Anders M, May KP. Rasterkraftmikroskopische Untersuchung von Zahnschmelzveränderungen. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1995.40.s1.309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Anders M, Sollböhmer O, May KP. Messung kleinster Materialabtragsraten am Zahn mit dem Rasterkraftmikroskop. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1995.40.s1.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Affiliation(s)
- R. J. Bryant
- USDA-ARS, Dale Bumpers National Rice Research Center, 2890 Hwy 130 E., Stuttgart, AR 72160. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
- Corresponding author. Phone: 870-672-9300 Ext. 227. Fax: 870-673-7581. E-mail:
| | - M. Anders
- University of Arkansas Rice Research and Extension Center, 2900 Hwy 130 E., Stuttgart, AR 72160
| | - A. M. McClung
- USDA-ARS, Dale Bumpers National Rice Research Center, 2890 Hwy 130 E., Stuttgart, AR 72160. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
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de Jesus Mari J, Patel V, Kieling C, Anders M, Jakovljevi M, Lam LC, Lotaief F, Mendlowicz MV, Okulat G, Sathyanarayana Rao TS, Tamam L, Tyrer P, Herrman H. The 5/95 Gap on the dissemination of mental health research: The World Psychiatric Association (WPA) task force report on project with editors of low and middle income (LAMI) countries. Afr J Psychiatry (Johannesbg) 2009; 12:33-39. [PMID: 19517045] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The World Psychiatric Association (WPA) Task Force and a small group previously convened by the WPA publications committee initiated three activities between 2006-2008 that aimed to respond to the need for greater support for psychiatry journals in LAMI countries. In a joint venture with participants from the Global Mental Health Movement the Task Force editors from LAMI countries in Africa, Asia, Eastern Europe and Latin America were contacted to identify potential journals to target for indexation (Medline and ISI). The committee analyzed the editors' applications on the following criteria: a) geographical representativeness; b) affiliation to a professional mental health society; c) regular publication of at least 4 issues per year over the past few years; d) comprehensive national and international editorial boards; e) publication of original articles, or at least abstracts, in English; f) some level of current indexation; g) evidence of a good balance between original and review articles in publications; and h) a friendly access website. The committee received 26 applications (11 from Latin America, 7 from Central Europe, 4 from Asia and 4 from Africa), and selected 8 journals, 2 from each geographical area, on the basis of the overall scores obtained for the items mentioned, to participate in an editors meeting held in Prague in September 2008. The aims of the committee are twofold: a) to concentrate support for those selected journals; and b) to assist all LAMI mental health editors in improving the quality of their journals and fulfilling the requirements for full indexation. This report summarizes the procedures conducted by the committee, the assessment of the current non-indexed journals, and offers suggestions for further action.
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Anders M, Rösch T, Küster K, Becker I, Höfler H, Stein HJ, Meining A, Wiedenmann B, Sarbia M. Expression and function of the coxsackie and adenovirus receptor in Barrett's esophagus and associated neoplasia. Cancer Gene Ther 2009; 16:508-15. [DOI: 10.1038/cgt.2008.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pohl H, Rösch T, Vieth M, Koch M, Becker V, Anders M, Khalifa AC, Meining A. Miniprobe confocal laser microscopy for the detection of invisible neoplasia in patients with Barrett's oesophagus. Gut 2008; 57:1648-53. [PMID: 18755886 DOI: 10.1136/gut.2008.157461] [Citation(s) in RCA: 172] [Impact Index Per Article: 10.8] [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: 12/17/2022]
Abstract
OBJECTIVE The biggest challenge in endoscopic surveillance of Barrett's oesophagus is better detection of neoplasia in mucosa of normal macroscopic appearance. We evaluated in vivo miniprobe confocal laser microscopy (CLM) for the detection of invisible Barrett's neoplasia. DESIGN Prospective two-centre trial in two phases: phase I to establish criteria of Barrett's neoplasia and phase II to test these criteria. PATIENTS AND INTERVENTION 296 biopsy sites in 38 consecutive patients with Barrett's oesophagus (mean age 62.1 years, 89.5% men, median length of the Barrett's oesophagus, 3 cm) were examined with standard high-resolution endoscopy and by miniprobe CLM, with precise matching of CLM recordings to biopsy sites. CLM image criteria for normal versus neoplastic Barrett's oesophagus were established from 95 biopsies of 15 patients (phase I); these criteria were then prospectively tested on 201 biopsies from the remaining patients without visible focal changes (phase II). All 201 CLM video recordings from phase II cases were randomised and blindly evaluated by two gastroenterologists. MAIN OUTCOME MEASURE The primary endpoints were accuracy values in diagnosing HGIN or early carcinoma (EC) on a per-biopsy basis. Secondary endpoints included inter-observer agreement. RESULTS All initially defined miniprobe CLM criteria (phase I) were significantly more frequently detected in HGIN/EC sites compared with sites with no or low grade neoplasia (phase II). In a per-biopsy analysis, sensitivity and specificity for two independent investigators were 75.0% and 88.8%, and 75.0% and 91.0%, respectively, translating at best into a positive predictive value of 44.4% and a negative predictive value of 98.8%. Inter-observer agreement was good (kappa 0.6). CONCLUSION Miniprobe CLM showed a high negative predictive value for the diagnosis of endoscopically invisible neoplasia in Barrett's oesophagus; sensitivity, however, has still to be improved.
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Affiliation(s)
- H Pohl
- Central Interdisciplinary Endoscopy Unit, Department of Gastroenterology, Hepatology and Metabolic Diseases, Virchow Clinic Campus, Charité Medical University of Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
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Pohl H, Aschenbeck J, Drossel R, Schröder A, Mayr M, Koch M, Rothe K, Anders M, Voderholzer W, Hoffmann J, Schulz HJ, Liehr RM, Gottschalk U, Wiedenmann B, Rösch T. Endoscopy in Barrett's oesophagus: adherence to standards and neoplasia detection in the community practice versus hospital setting. J Intern Med 2008; 264:370-8. [PMID: 18482289 DOI: 10.1111/j.1365-2796.2008.01977.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 12/20/2022]
Abstract
OBJECTIVE Potential process differences between hospital and community-based endoscopy for Barrett's oesophagus have not been examined. We aimed at comparing adherence to guidelines and neoplasia detection rates in medical centres (MC) and community practices (CP). DESIGN Retrospective analysis. SETTING All histologically confirmed Barrett cases seen over a 3-year period in six MC and 19 CP covering a third of all upper gastrointestinal endoscopies (n = 126,000) performed annually in Berlin, Germany. MAIN OUTCOME MEASURE Rate of relevant neoplasia (high-grade intraepithelial neoplasia or more) in both settings in relation to adherence to standards. RESULTS Of 1317 Barrett cases, 66% were seen in CP. CP patients had a shorter mean Barrett length (2.6 cm vs. 3.8 cm; P < 0.001) with fewer biopsies taken during an examination (2.5 vs. 4.1 for Barrett length <or=2 cm; P < 0.001). CPs also provided fewer complete esophagogastroduodenoscopy documentation (25.1% vs. 57.8%, P < 0.001). Neoplasias were found more commonly in MCs compared to CPs (9.2% vs. 0.8%; P < 0.001). However, on exclusion of all referred patients with known neoplasia (65%) or those examined for other reasons (27.5%), the detection rate at MCs decreased to 1.3%, not different from the one seen at CPs (0.8%, P = 0.43). Only 13% were found during surveillance, but 57% were diagnosed at an early stage. CONCLUSIONS Referral bias and not better adherence to guidelines could explain the higher neoplasia prevalence in Barrett's oesophagus at hospital centres. Despite a generally poor adherence to guidelines, most neoplasias found were at an early and potentially curable stage.
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Affiliation(s)
- H Pohl
- Department of Gastroenterology, Charité University Hospitals, Berlin, Germany.
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Gartenschläger M, Düber C, Schweden F, Anders M, Leissner J, Steffens J. Nierensegmentarterienaneurysma: Spiral-CT-Diagnostik und Therapie mittels Transkatheter-Embolisation. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1065308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Torres A, Storey L, Anders M, Miller R, Bulbulian B, Jin J, Raghavan S, Lee J, Slade H, Birmachu W. Microarray analysis of aberrant gene expression in actinic keratosis: effect of the Toll-like receptor-7 agonist imiquimod. Br J Dermatol 2007; 157:1132-47. [DOI: 10.1111/j.1365-2133.2007.08218.x] [Citation(s) in RCA: 20] [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: 12/16/2022]
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Simpson D, Turner L, Holmes T, Anders M, Spencer H. Osteoporosis Knowledge Lacking Among Patients Seeking Emergency Health Care. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Holmes T, Simpson D, Turner L, Spencer H, Anders M. Readiness to Quit Smoking and Begin Physical Activity Among a Sample of Patients Seeking Non-emergent Care. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gold M, Hurwitz J, Anders M. THE ENZYMATIC METHYLATION OF RNA AND DNA, II. ON THE SPECIES SPECIFICITY OF THE METHYLATION ENZYMES. Proc Natl Acad Sci U S A 2006; 50:164-9. [PMID: 16578536 PMCID: PMC300670 DOI: 10.1073/pnas.50.1.164] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- M Gold
- DEPARTMENT OF MICROBIOLOGY, NEW YORK UNIVERSITY SCHOOL OF MEDICINE
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Abstract
At the turn of the year 2003/2004 a change took place in the in-patient sector of the German public health care system from the former daily-rate-based reimbursement of medical services to a reimbursement in accordance with diagnosis related groups (DRGs). At the same time, there are indications for a paradigm change in the allocation of medical services: away from the even provision of medical care across all country's municipalities towards a concentration in specialized medical centres - with uncertain ethical implications. On one hand, one hopes to cut costs in the in-patient area. On the other hand, it is questionable, whether cutting costs still allows an adequate treatment of multimorbid, chronically ill patients. The new system likely favours the active, autonomously deciding patient, who is capable of using additional information from the planned quality reports to obtain the best possible medical services. But the new system could create a disadvantage for the less informed patient groups, especially those who don't have easy access to such information. It is not our intention to idealise the German health care system before the invention of diagnosis related groups. Based on a survey of studies from the U.S., the article assesses consequences of such a system and relates them to ethical considerations.
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Affiliation(s)
- C Lenk
- Abteilung Ethik und Geschichte der Medizin der Universität Göttingen.
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Fisar Z, Anders M, Tvrzická E, Stanková B. Effect of long-term administration of antidepressants on the lipid composition of brain plasma membranes. Gen Physiol Biophys 2005; 24:221-36. [PMID: 16118474] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The connection between changes in lipid pattern in brain plasma membranes and long-term administration of therapeutically effective doses of antidepressants has not been sufficiently demonstrated so far. Therefore, we analyzed effect of antidepressants that differ in pharmacological selectivity on membrane lipid composition in the rat brain tissue. Laboratory rats were given desipramine, maprotiline, citalopram, moclobemide or lithium for a 4-week period. We observed a significant decrease in phosphatidylethanolamine representation after administration of maprotiline, citalopram and moclobemide when compared with controls. Membrane cholesterol content was decreased after desipramine administration and increased after citalopram or lithium treatment. Electroneutral phospholipids were decreased after the administration of all tested antidepressants except for desipramine. Decrease in phosphatidylserine was found following long-term administration of maprotiline or desipramine; relative representation of phosphatidylinositol was reduced after lithium treatment. Statistically significant negative correlation between cholesterol and electroneutral phospholipids was discovered. Membrane microviscosity evaluated by fluorescence anisotropy of membrane probes was only slightly decreased after desipramine and increased after citalopram administration. Hypothesis was supported that changes in brain neurotransmission produced by antidepressants could be, at least partially, associated with adaptive changes in membrane cholesterol and phospholipids.
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Affiliation(s)
- Z Fisar
- Department of Psychiatry, 1st Faculty of Medicine, Charles University, Ke Karlovu 11, 120 00 Prague 2, Czech Republic.
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Fisar Z, Anders M, Kalisová L. Effect of pharmacologically selective antidepressants on serotonin uptake in rat platelets. Gen Physiol Biophys 2005; 24:113-28. [PMID: 15900091] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We tested a hypothesis that a long-term administration of antidepressants acting through different primary biochemical mechanisms is associated with changes in the platelet serotonin (5-hydroxytryptamine, 5-HT) transport. Laboratory rats were administered norepinephrine reuptake inhibitors (desipramine, maprotiline), selective 5-HT reuptake inhibitor (citalopram), reversible monoamine oxidase inhibitor (moclobemide), and lithium (inositol monophosphatase inhibitor among others) during a 4-week period. Apparent kinetic parameters of platelet 5-HT transport were analyzed. Significant decrease in apparent Michaelis constant (K(M)) was found after the administration of all tested antidepressants except for desipramine. There was certain increase in maximal velocity (V(max)) values following the administration of desipramine, maprotiline, and citalopram; however, the all V(max) changes were not significant. V(max)/K(M) ratio representing limiting permeability at low extracellular concentrations of 5-HT was systematically increased in all the tested drugs, but significant changes were occurred only in maprotiline- and citalopram-treated rats. Adaptive changes in platelet 5-HT transport induced by citalopram were opposite to the acute inhibitory effect of this drug on 5-HT transporter activity. An increase in limiting membrane permeability for 5-HT could be included in the common adaptive effect of the long-term administration of antidepressants that differ in pharmacologic selectivity.
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Affiliation(s)
- Z Fisar
- Department of Psychiatry, 1st Faculty of Medicine, Charles University, Ke Karlovu 11, 120 00 Prague 2, Czech Republic.
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Kitzlerová E, Slavícek J, Pisvejcová K, Anders M, Dohnalová A, Balíková M. Plasma levels of dosulepine and heart electric field. Physiol Res 2004; 52:319-25. [PMID: 12790763] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
Antidepressants, particularly tricyclic (TCA) antidepressants, may have cardiotoxic effects, such as cardiac arrhythmias, especially in patients with cardiovascular diseases. For most of TCA, no exact correlation between dosage, plasma levels and changes of ECG parameters of standard ECG has been found. So far, no relationship between dosulepine plasma levels and heart electric field parameters has been studied. We selected 18 female outpatient subjects diagnosed with recurrent depressive disorders, currently in the remission phase (HAMD < 10), without any cardiovascular disease. Patients were treated with daily dosulepine doses of 25-125 mg for 4-8 weeks. 30 heart electric field parameters were analyzed by Cardiag 128.1 diagnostic system as part of BSPM (Body Surface Potential Mapping). Acquired data were correlated with dosulepine plasma levels by means of Spearman's rank order correlation test. Four ECG parameters showed a significant correlation with dosulepine plasma levels: QRS axis deviation in frontal plane (p=0.01), DIAM 40 max (p<0.05), QRS-STT angle in transversal and left sagittal plane (p<0.05). The demonstrated changes confirmed dosulepine influence on the early myocardium depolarization phase and the correlation of this effect with dosulepine dose (its plasma concentration). The higher the dosulepine level, the more marked are the changes of the QRS-STT angle in transversal and sagittal planes and the changes in the QRS axis deviation in frontal plane. Repeatedly recorded changes in the heart electric field were dosulepine-specific and dependent on its plasma levels.
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Affiliation(s)
- E Kitzlerová
- Department of Psychiatry, First Faculty of Medicine, Charles University, Prague, Czech Republic.
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Ko HS, Anders M, Diehl S, Dominguez E, Löhr M, Düber C. Portal vein erosion and acute abdominal hemorrhage as a complication of acute pancreatitis. ACTA ACUST UNITED AC 2003; 28:700-2. [PMID: 14628880 DOI: 10.1007/s00261-003-0014-1] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The case of a 35-year-old male with portal vein erosion and acute life-threatening abdominal hemorrhage as a complication of acute pancreatitis is reported. Erosion of arterial walls is the most common complication of pancreatitis and pancreatic pseudocysts, and erosion of the portal vein leading to a fistula between the pancreas and the portal vein is very rare. Diagnosis was made by multislice spiral computed tomography, and nonsurgical treatment was elected, leading to complete recoverage.
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Affiliation(s)
- H S Ko
- Department of Clinical Radiology, Mannheim University Hospital, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167 Mannheim, Germany
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Anders M, Tenno T, Åberg M, Siegbahn A. A sensitive method for tissue factor mRNA quantitation. J Thromb Haemost 2003. [DOI: 10.1111/j.1538-7836.2003.tb04460.x] [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]
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Anders M, Hansen R, Ding RX, Rauen KA, Bissell MJ, Korn WM. Disruption of 3D tissue integrity facilitates adenovirus infection by deregulating the coxsackievirus and adenovirus receptor. Proc Natl Acad Sci U S A 2003; 100:1943-8. [PMID: 12576544 PMCID: PMC149938 DOI: 10.1073/pnas.0337599100] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The human coxsackievirus and adenovirus receptor (CAR) represents the primary cellular site of adenovirus attachment during infection. An understanding of the mechanisms regulating its expression could contribute to improving efficacy and safety of adenovirus-based therapies. We characterized regulation of CAR expression in a 3D cell culture model of human breast cancer progression, which mimics aspects of the physiological tissue context in vitro. Phenotypically normal breast epithelial cells (S1) and their malignant derivative (T4-2 cells) were grown either on tissue culture plastic (2D) or 3D cultures in basement membrane matrix. S1 cells grown in 3D showed low levels of CAR, which was expressed mainly at cell-cell junctions. In contrast, T4-2 cells expressed high levels of CAR, which was mainly in the cytoplasm. When signaling through the epidermal growth factor receptor was inhibited in T4-2 cells, cells reverted to a normal phenotype, CAR protein expression was significantly reduced, and the protein relocalized to cell-cell junctions. Growth of S1 cells as 2D cultures or in 3D in collagen-I, a nonphysiological microenvironment for these cells, led to up-regulation of CAR to levels similar to those in T4-2 cells, independently of cellular growth rates. Thus, expression of CAR depends on the integrity and polarity of the 3D organization of epithelial cells. Disruption of this organization by changes in the microenvironment, including malignant transformation, leads to up-regulation of CAR, thus enhancing the cell's susceptibility to adenovirus infection.
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Affiliation(s)
- M Anders
- Cancer Research Institute, Comprehensive Cancer Center, University of California, San Francisco, CA 94143, USA
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Fürderer S, Anders M, Schwindling B, Salick M, Düber C, Wenda K, Urban R, Glück M, Eysel P. [Vertebral body stenting. A method for repositioning and augmenting vertebral compression fractures]. Orthopade 2002; 31:356-61. [PMID: 12056275 DOI: 10.1007/s00132-001-0275-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
UNLABELLED Purpose of the study was to demonstrate the effectiveness of expanding a fractured vertebral body by transpedicular dilatation and stenting. 7 human cadaveric vertebral bodies from L2 to L5 underwent axia compression until a vertebral burst fracture was provoked. Then, by bilateral transpedicular approach, balloon-catheters were introduced, which were armed with stents, usually used for angioplasty. The catheters were inflated with radiolucent fluid and the stents expanded under radiologic control. After expansion, the balloon was deflated and removed, the stents resting inside the vertebral body, holding their inflated shape. Then, the resulting hole was filled with an injectable biodegradable calcium-phosphate. CT-scans were performed after destruction and after expansion. Morphology before and after expansion was judged, using 3-D reconstructions. Vertebral body strength was measured before destruction and after treatment with an Instron testing machine. RESULTS Vertebral body shape could be restored. Also impressed central parts of the bony endplate could be elevated by using a convergent approach through the pedicles. There was no collapse of the vertebral body after removing the catheter-balloons The vertebral body strength could be restored up to a physiologic level. This procedure gives new perspectives in the treatment either of osteoporotic compression or traumatic vertebral fracture. By using CT-guided technique, it could be performed by a minimally invasive approach percutaneously.
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Affiliation(s)
- S Fürderer
- Klinik und Poliklinik für Orthopädie, Universität zu Köln, Josef Stelzmann Str. 3, 50924 Köln.
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Romaneehsen B, Anders M, Röhrl B, Hast HJ, Hengstler JG, Schiffer I, Neugebauer B, Teichmann E, Schreiber WG, Thelen M. [Cryotherapy of malignant tumors: studies with MRI in an animal experiment and comparison with morphological changes]. ROFO-FORTSCHR RONTG 2001; 173:632-8. [PMID: 11512236 DOI: 10.1055/s-2001-15832] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
PURPOSE Aim of our study was to investigate the efficacy of 7 F cryoprobes for percutaneous use morpho- and histologically, to examine the role of apoptosis after cryotherapy, and to compare contrast-enhanced MRI with histopathological findings at different time intervals in a tumor-mouse model. METHODS Percutaneous cryotherapy was performed in 15 immunocompromised nude mice with subcutaneously implanted tumors using the non-small-cell lung cancer cell line Lu 1. In group a) 7 mice were sacrificed after definite time intervals and histological examinations were done for evaluation of necrosis and apoptosis (HE; TUNEL assay); 2 mice are in long-term follow-up. In group b) in 6 mice tumor destruction and perfusion before and after freezing were investigated with native and contrast-enhanced MR imaging (T1- and T2-weighted spin-echo) and compared with histopathological findings. Histological control were done in 2 untreated mice. RESULTS We observed fast tumor-reduction within two weeks (ca. 50%). On long-term follow-up (> 6 months) no recurrence has been noticed so far. Tumors were well vascularized prior to treatment and did not-show contrast enhancement an any time after cryotherapy. A narrow contrast-enhanced zone was seen on the tumor border subcutaneously as a sign of peripheral hyperemia and central vascular stasis after cryotherapy. On histology there was evidence of both apoptosis and necrosis. CONCLUSION We have established a tumor-mouse model for further investigations. Two minutes freezing of a 2-cm tumor in the mouse model is sufficient for tumor ablation with scarred healing. Apoptosis may play a role in cryotherapy of experimental tumors. Contrast-enhanced MRI is suitable for the estimation of the cryolasion.
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Affiliation(s)
- B Romaneehsen
- Klinik und Poliklinik für Radiologie, Johannes Gutenberg-Universität Mainz.
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Stein R, Jünger TH, Anders M, Fisch M, Kerschbaumer F, Howaldt HP, Hohenfellner R. The Giessen-Mainz-Frankfurt procedure: a new method for complex pelvic reconstruction for bladder exstrophy. J Urol 2001; 165:1235-9. [PMID: 11257692] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
PURPOSE In bladder exstrophy primary reconstruction remains the gold standard worldwide. Despite various types of osteotomies the permanent correction of pubic diastasis remains a challenge. In maxillofacial surgery callus distraction is a routine treatment for hypoplastic mandibles. Originally described by Ilizarov, this method provides stable and true bone lengthening after gradual distraction of an osteotomy site as long as the periosteum remains intact. In cooperation with the departments of maxillofacial surgery and orthopedics we used this technique to correct pubic diastasis and facilitate phallic reconstruction in a 4 1/2-year-old boy with bladder exstrophy who had previously undergone continent diversion. MATERIALS AND METHODS Three-dimensional computerized tomography was used to create a stereolithography model and mock surgery was performed. Based on this model bilateral osteotomies of the superior and inferior segments of the pubic bones were done, preserving the periosteum. Pins were inserted and a multidirectional external fixation device was mounted. Distraction was started on day 5 postoperatively. The distraction rate was 1 mm. daily and immobilization time was 28 days. The distraction progress was monitored by sonography. The device was removed 6 weeks postoperatively. RESULTS Radiography of the pelvis 2 years postoperatively revealed that the distance between the pubic bones had decreased from 6 to 3 cm. (50%). Simultaneously the slanting angle normalized from 24 to 35 degrees due to upward rotation of the inferior pubic rami. Mineralization in the newly formed bones was excellent. Visible penile length had increased significantly. CONCLUSIONS To our knowledge we describe the first use of the basic Ilizarov principle of callus distraction for permanent complex pelvic reconstruction for bladder exstrophy in a 4 1/2-year-old boy. After subperiostial osteotomies approximation of the symphysis and rotation of the inferior pubic rami were achieved with a device commonly used in maxillofacial surgery. Approximation of 1 mm. daily for 28 days resulted in significant penile lengthening. At a followup of 2 years there were stable pelvic ring reconstruction and normal mineralization of the newly formed bones. In contrast to the standard techniques of osteotomies for correcting pubic diastasis, the Giessen-Mainz-Frankfurt procedure provides true bone growth with a stable decrease in diastasis. Successful penile reconstruction was facilitated 1 year postoperatively. This method may also be useful in primary and secondary bladder reconstruction.
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Affiliation(s)
- R Stein
- Department of Urology, Johannes Gutenberg University of Mainz, Medical School, Mainz, Germany
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Hynek K, Anders M. P02.306 Smooth pursuit eye movement (SPEM) in bulimia nervosa. Eur Psychiatry 2000. [DOI: 10.1016/s0924-9338(00)94713-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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