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Dietz J, Spengler U, Müllhaupt B, Schulze Zur Wiesch J, Piecha F, Mauss S, Seegers B, Hinrichsen H, Antoni C, Wietzke-Braun P, Peiffer KH, Berger A, Matschenz K, Buggisch P, Backhus J, Zizer E, Boettler T, Neumann-Haefelin C, Semela D, Stauber R, Berg T, Berg C, Zeuzem S, Vermehren J, Sarrazin C, Giostra E, Berning M, Hampe J, De Gottardi A, Rauch A, Semmo N, Discher T, Trauth J, Fischer J, Gress M, Günther R, Heinzow H, Schmidt J, Herrmann A, Stallmach A, Hilgard G, Deterding K, Lange C, Ciesek S, Wedemeyer H, Hoffmann D, Klinker H, Schulze P, Kocheise F, Müller-Schilling M, Kodal A, Kremer A, Ganslmayer M, Siebler J, Lammert F, Rissland J, Löbermann M, Götze T, Canbay A, Lohse A, von Felden J, Jordan S, Maieron A, Moradpour D, Chave JP, Moreno C, Müller T, Muche M, Epple HJ, Port K, von Hahn T, Cornberg M, Manns M, Reinhardt L, Ellenrieder V, Rockstroh J, Schattenberg J, Sprinzl M, Galle P, Roeb E, Steckstor M, Schmiegel W, Brockmeyer N, Seufferlein T, Stremmel W, Strey B, Thimme R, Teufel A, Vogelmann R, Ebert M, Tomasiewicz K, Trautwein C, Tacke F, Koenen T, Weber T, Zachoval R, Mayerle J, Raziorrouh B, Angeli W, Beckebaum S, Doberauer C, Durmashkina E, Hackelsberger A, Erhardt A, Garrido-Lüneburg A, Gattringer H, Genné D, Gschwantler M, Gundling F, Hametner S, Schöfl R, Hartmann C, Heyer T, Hirschi C, Jussios A, Kanzler S, Kordecki N, Kraus M, Kullig U, Wollschläger S, Magenta L, Beretta-Piccoli BT, Menges M, Mohr L, Muehlenberg K, Niederau C, Paulweber B, Petrides A, Pinkernell M, Piso R, Rambach W, Reiser M, Riecken B, Rieke A, Roth J, Schelling M, Schlee P, Schneider A, Scholz D, Schott E, Schuchmann M, Schulten-Baumer U, Seelhoff A, Stich A, Stickel F, Ungemach J, Walter E, Weber A, Winzer T, Abels W, Adler M, Audebert F, Baermann C, Bästlein E, Barth R, Barthel K, Becker W, Behrends J, Benninger J, Berger F, Berzow D, Beyer T, Bierbaum M, Blaukat O, Bodtländer A, Böhm G, Börner N, Bohr U, Bokemeyer B, Bruch H, Bucholz D, Burkhard O, Busch N, Chirca C, Delker R, Diedrich J, Frank M, Diehl M, Dienethal A, Dietel P, Dikopoulos N, Dreck M, Dreher F, Drude L, Ende K, Ehrle U, Baumgartl K, Emke F, Glosemeyer R, Felten G, Hüppe D, Fischer J, Fischer U, Frederking D, Frick B, Friese G, Gantke B, Geyer P, Schwind H, Glas M, Glaunsinger T, Goebel F, Göbel U, Görlitz B, Graf R, Gruber H, Härter G, Herder M, Heuchel T, Heuer S, Höffl KH, Hörster H, Sonne JU, Hofmann W, Holst F, Hunstiger M, Hurst A, Jägel-Guedes E, John C, Jung M, Kallinowski B, Kapzan B, Kerzel W, Khaykin P, Klarhof M, Klüppelberg U, Klugewitz K, Knapp B, Knevels U, Kochsiek T, Körfer A, Köster A, Kuhn M, Langekamp A, Künzig B, Link R, Littman M, Löhr H, Lutz T, Knecht G, Lutz U, Mainz D, Mahle I, Maurer P, Mayer C, Meister V, Möller H, Heyne R, Moritzen D, Mroß M, Mundlos M, Naumann U, Nehls O, Ningel K, Oelmann A, Olejnik H, Gadow K, Pascher E, Petersen J, Philipp A, Pichler M, Polzien F, Raddant R, Riedel M, Rietzler S, Rössle M, Rufle W, Rump A, Schewe C, Hoffmann C, Schleehauf D, Schmidt K, Schmidt W, Schmidt-Heinevetter G, Schmidtler-von Fabris J, Schnaitmann E, Schneider L, Schober A, Niehaus-Hahn S, Schwenzer J, Seidel T, Seitel G, Sick C, Simon K, Stähler D, Stenschke F, Steffens H, Stein K, Steinmüller M, Sternfeld T, Strey B, Svensson K, Tacke W, Teuber G, Teubner K, Thieringer J, Tomesch A, Trappe U, Ullrich J, Urban G, Usadel S, von Lucadou A, Weinberger F, Werheid-Dobers M, Werner P, Winter T, Zehnter E, Zipf A. Efficacy of Retreatment After Failed Direct-acting Antiviral Therapy in Patients With HCV Genotype 1-3 Infections. Clin Gastroenterol Hepatol 2021; 19:195-198.e2. [PMID: 31706062 DOI: 10.1016/j.cgh.2019.10.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/19/2019] [Accepted: 10/25/2019] [Indexed: 02/07/2023]
Abstract
Hepatitis C virus infection is causing chronic liver disease, cirrhosis, and hepatocellular carcinoma. By combining direct-acting antivirals (DAAs), high sustained virologic response rates (SVRs) can be achieved. Resistance-associated substitutions (RASs) are commonly observed after DAA failure, and especially nonstructural protein 5A (NS5A) RASs may impact retreatment options.1-3 Data on retreatment of DAA failure patients using first-generation DAAs are limited.4-7 Recently, a second-generation protease- and NS5A-inhibitor plus sofosbuvir (voxilaprevir/velpatasvir/sofosbuvir [VOX/VEL/SOF]) was approved for retreatment after DAA failure.8 However, this and other second-generation regimens are not available in many resource-limited countries or are not reimbursed by regular insurance, and recommendations regarding the selection of retreatment regimens using first-generation DAAs are very important. This study aimed to analyze patients who were re-treated with first-generation DAAs after failure of a DAA combination therapy.
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Affiliation(s)
- Julia Dietz
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Ulrich Spengler
- Department of Internal Medicine I, University of Bonn, Bonn, and German Center for Infection Research (DZIF), Partner Site, Cologne-Bonn, Germany
| | - Beat Müllhaupt
- Swiss Hepato-Pancreato-Biliary Center and Department of Gastroenterology and Hepatology, University Hospital Zürich, Zürich, Switzerland
| | - Julian Schulze Zur Wiesch
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, and German Center for Infection Research (DZIF), Partner Site, Hamburg-Lübeck-Borstel-Riems, Germany
| | - Felix Piecha
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, and German Center for Infection Research (DZIF), Partner Site, Hamburg-Lübeck-Borstel-Riems, Germany
| | - Stefan Mauss
- Center for HIV and Hepatogastroenterology, Düsseldorf, Germany
| | - Barbara Seegers
- Gastroenterologisch-Hepatologisches Zentrum Kiel, Kiel, Germany
| | | | - Christoph Antoni
- Department of Internal Medicine II, University Hospital Mannheim, Mannheim, Germany
| | | | - Kai-Henrik Peiffer
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Annemarie Berger
- Institute for Medical Virology, University Hospital Frankfurt, Frankfurt, Germany
| | | | - Peter Buggisch
- Institute for Interdisciplinary Medicine IFI, Hamburg, Germany
| | - Johanna Backhus
- Department of Internal Medicine I, Ulm University, Ulm, Germany
| | - Eugen Zizer
- Department of Internal Medicine I, Ulm University, Ulm, Germany
| | - Tobias Boettler
- Department of Medicine II, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Neumann-Haefelin
- Department of Medicine II, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - David Semela
- Division of Gastroenterology and Hepatology, Kantonsspital St Gallen, St Gallen, Switzerland
| | - Rudolf Stauber
- Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Thomas Berg
- Department of Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany
| | - Christoph Berg
- Department of Internal Medicine I, University of Tübingen, Tübingen, Germany
| | - Stefan Zeuzem
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Johannes Vermehren
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany
| | - Christoph Sarrazin
- Department of Internal Medicine 1, University Hospital Frankfurt, Goethe University, Frankfurt, and German Center for Infection Research (DZIF), External Partner Site, Frankfurt, Germany; Medizinische Klinik 2, St Josefs-Hospital, Wiesbaden, Germany.
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Möller S, Kuhn B, Rayaprolu R, Heuer S, Rasinski M, Kreter A. HiperFer, a reduced activation ferritic steel tested for nuclear fusion applications. Nuclear Materials and Energy 2018. [DOI: 10.1016/j.nme.2018.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Heuer S, Weber T, Pintsuk G, Coenen J, Matejicek J, Linsmeier C. Aiming at understanding thermo-mechanical loads in the first wall of DEMO: Stress–strain evolution in a Eurofer-tungsten test component featuring a functionally graded interlayer. Fusion Engineering and Design 2018. [DOI: 10.1016/j.fusengdes.2018.07.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Heuer S, Kerscher A, Kranke P. Schwangere im Schockraum – Algorithmus für schwangere Traumapatientinnen. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388193] [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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Rose TJ, Impa SM, Rose MT, Pariasca-Tanaka J, Mori A, Heuer S, Johnson-Beebout SE, Wissuwa M. Enhancing phosphorus and zinc acquisition efficiency in rice: a critical review of root traits and their potential utility in rice breeding. Ann Bot 2013; 112:331-45. [PMID: 23071218 PMCID: PMC3698374 DOI: 10.1093/aob/mcs217] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 08/24/2012] [Indexed: 05/18/2023]
Abstract
BACKGROUND Rice is the world's most important cereal crop and phosphorus (P) and zinc (Zn) deficiency are major constraints to its production. Where fertilizer is applied to overcome these nutritional constraints it comes at substantial cost to farmers and the efficiency of fertilizer use is low. Breeding crops that are efficient at acquiring P and Zn from native soil reserves or fertilizer sources has been advocated as a cost-effective solution, but would benefit from knowledge of genes and mechanisms that confer enhanced uptake of these nutrients by roots. SCOPE This review discusses root traits that have been linked to P and Zn uptake in rice, including traits that increase mobilization of P/Zn from soils, increase the volume of soil explored by roots or root surface area to recapture solubilized nutrients, enhance the rate of P/Zn uptake across the root membrane, and whole-plant traits that affect root growth and nutrient capture. In particular, this review focuses on the potential for these traits to be exploited through breeding programmes to produce nutrient-efficient crop cultivars. CONCLUSIONS Few root traits have so far been used successfully in plant breeding for enhanced P and Zn uptake in rice or any other crop. Insufficient genotypic variation for traits or the failure to enhance nutrient uptake under realistic field conditions are likely reasons for the limited success. More emphasis is needed on field studies in mapping populations or association panels to identify those traits and underlying genes that are able to enhance nutrient acquisition beyond the level already present in most cultivars.
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Affiliation(s)
- T. J. Rose
- Southern Cross Plant Science, Southern Cross University, PO Box 157, Lismore, NSW 2480, Australia
| | - S. M. Impa
- Crop and Environmental Sciences Division, International Rice Research Institute (IRRI), DAPO Bob 7777, Metro Manila, Philippines
| | - M. T. Rose
- School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia
| | - J. Pariasca-Tanaka
- Japan International Research Center for Agricultural Sciences (JIRCAS), Stable Food Production Program, 1-1 Ohwashi Tsukuba, Ibaraki 305-8686, Japan
| | - A. Mori
- Japan International Research Center for Agricultural Sciences (JIRCAS), Stable Food Production Program, 1-1 Ohwashi Tsukuba, Ibaraki 305-8686, Japan
| | - S. Heuer
- Plant Breeding, Genetics and Biotechnology Division, International Rice Research Institute (IRRI), DAPO Bob 7777, Metro Manila, Philippines
| | - S. E. Johnson-Beebout
- Crop and Environmental Sciences Division, International Rice Research Institute (IRRI), DAPO Bob 7777, Metro Manila, Philippines
| | - M. Wissuwa
- Japan International Research Center for Agricultural Sciences (JIRCAS), Stable Food Production Program, 1-1 Ohwashi Tsukuba, Ibaraki 305-8686, Japan
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Brenner G, Faure H, Heuer S, Reinholz J. [Detection of colorectal findings for cancer prevention by immunochemical stool test with different sensitivity levels]. Z Gastroenterol 2012; 50:1083-8. [PMID: 23059801 DOI: 10.1055/s-0032-1312866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Immunochemical stool blood tests have a significantly higher sensitivity for the detection of advanced neoplasia and colorectal cancer. Based on national and international studies it has been required to include them into the national cancer screening programme in Germany also. The sensitivity (detection limit) can be set by the manufacturer in order to achieve an optimal and balanced result between sensitivity and specificity. The present study was conducted with 639 patients who have undergone both the screening colonoscopy, as well as the immunochemical stool blood test. The test "immoCARE-C" provided by the company CARE diagnostica Laborreagenzien GmbH was used in the study. The test has been evaluated with seven levels of detection limits between 500 ng/mL and 25 ng/mL. The best sensitivity for detection of advanced lesions was demonstrated by a cut-off of 50 ng/mL and 25 ng/mL. The specificity did not fall below 90 %. These positive results lead to considerations to organise a primary access to such tests in the prevention of colorectal cancer as a kind of filter before offering the screening colonoscopy.
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Affiliation(s)
- U Zollner
- Department of Obstetrics and Gynecology, University of Würzburg, Würzburg, Germany.
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Heuer S, Zollner U, Hönig A, Rehn M. Umkehrfluss der Umbilikalarterie eines Feten bei monochorialen Drillingen - Indikation zur primären Sectio caesarea. Geburtshilfe Frauenheilkd 2012. [DOI: 10.1055/s-0032-1318563] [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] Open
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Diessner J, Heuer S, Engel JB, Frambach T, Kranke P, Quaisser C, Dietl J, Honig A. [Myocardial infarction in the 34th week of gestation: case report]. Z Geburtshilfe Neonatol 2011; 215:209-11. [PMID: 22028062 DOI: 10.1055/s-0031-1271738] [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: 10/15/2022]
Abstract
Acute myocardial infarction during pregnancy is a rare event that is often associated with a very high maternal mortality, estimated to be from 19 to 37%. During the last decades the incidence of myocardial infarction during pregnancy has increased . The main contributing factor could be a higher prevalence of the metabolic syndrome. The strongest predictors correlated with a myocardial infarction are hypertension, diabetes mellitus and advanced maternal age. In addition, improved diagnostic tools could explain the elevated incidence of myocardial infarction during pregnancy. In general gestation is not considered a risk factor for myocardial infarction but gravidity is accompanied by an increase in oestrogen and progesterone levels. It is generally accepted that oral contraceptives increase the risk of coronary heart disease. We present a case where a 37-year-old gravida was admitted to hospital with diffuse thoracic pain. In the patient's history, we found several putative reasons for the thoracic pain that pointed to a musculoskeletal cause. Based on an elevation of ischaemic heart markers and continuous non-specific thoracic pain we performed a primary Cesarean section. In the coronary angiography procedure that followed, a thrombotic occlusion of the ramus diagonalis was diagnosed. We here describe the differential diagnosis as well as the problems associated with diagnosing myocardial infarction in the third trimester of pregnancy.
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Affiliation(s)
- J Diessner
- Universitäts-Frauenklinik Würzburg, Würzburg
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Häusler SFM, Keller A, Chandran PA, Ziegler K, Zipp K, Heuer S, Krockenberger M, Engel JB, Hönig A, Scheffler M, Dietl J, Wischhusen J. Whole blood-derived miRNA profiles as potential new tools for ovarian cancer screening. Br J Cancer 2010; 103:693-700. [PMID: 20683447 PMCID: PMC2938264 DOI: 10.1038/sj.bjc.6605833] [Citation(s) in RCA: 156] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/28/2010] [Accepted: 07/07/2010] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Screening is an unsolved problem for ovarian cancer (OvCA). As late detection is equivalent to poor prognosis, we analysed whether OvCA patients show diagnostically meaningful microRNA (miRNA) patterns in blood cells. METHODS Blood-borne whole miRNome profiles from 24 patients with OvCA and 15 age- and sex-matched healthy controls were biostatistically evaluated. RESULTS Student's t-test revealed 147 significantly deregulated miRNAs before and 4 after Benjamini-Hochberg adjustment. Although these included miRNAs already linked to OvCA (e.g., miR-16, miR-155), others had never before been connected to specific diseases. A bioinformatically calculated miRNA profile allowed for discrimination between blood samples of OvCA patients and healthy controls with an accuracy of >76%. When only cancers of the serous subtype were considered and compared with an extended control group (n=39), accuracy, specificity and sensitivity all increased to >85%. CONCLUSION Our proof-of-principle study strengthens the hypothesis that neoplastic diseases generate characteristic miRNA fingerprints in blood cells. Still, the obtained OvCA-associated miRNA pattern is not yet sensitive and specific enough to permit the monitoring of disease progression or even preventive screening. Microarray-based miRNA profiling from peripheral blood could thus be combined with other markers to improve the notoriously difficult but important screening for OvCA.
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Affiliation(s)
- S F M Häusler
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - A Keller
- Febit Biomed Gmbh,Im Neuenheimer Feld 519, Heidelberg 69120, Germany
- Biomarker Discovery Center Heidelberg, Heidelberg 69120, Germany
| | - P A Chandran
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
- Graduate School for Life Sciences, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - K Ziegler
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - K Zipp
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - S Heuer
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - M Krockenberger
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - J B Engel
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - A Hönig
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - M Scheffler
- Febit Biomed Gmbh,Im Neuenheimer Feld 519, Heidelberg 69120, Germany
| | - J Dietl
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
| | - J Wischhusen
- Department of Obstetrics and Gynaecology, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
- Interdisciplinary Center for Clinical Research, University of Würzburg, School of Medicine, Josef-Schneider-Strasse 4, Würzburg 97080, Germany
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Heuer S, Nicholls J, Terblanche M, Treacher D. Comparison of two methods for diagnosing delirium conducted in a mixed medical ICU and the concordance between two independent nurse assessors. Crit Care 2010. [PMCID: PMC2934551 DOI: 10.1186/cc8728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Jagadish SVK, Muthurajan R, Oane R, Wheeler TR, Heuer S, Bennett J, Craufurd PQ. Physiological and proteomic approaches to address heat tolerance during anthesis in rice (Oryza sativa L.). J Exp Bot 2010; 61:143-56. [PMID: 19858118 PMCID: PMC2791117 DOI: 10.1093/jxb/erp289] [Citation(s) in RCA: 221] [Impact Index Per Article: 15.8] [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: 04/17/2009] [Revised: 08/28/2009] [Accepted: 09/04/2009] [Indexed: 05/18/2023]
Abstract
Episodes of high temperature at anthesis, which in rice is the most sensitive stage to temperature, are expected to occur more frequently in future climates. The morphology of the reproductive organs and pollen number, and changes in anther protein expression, were studied in response to high temperature at anthesis in three rice (Oryza sativa L.) genotypes. Plants were exposed to 6 h of high (38 degrees C) and control (29 degrees C) temperature at anthesis and spikelets collected for morphological and proteomic analysis. Moroberekan was the most heat-sensitive genotype (18% spikelet fertility at 38 degrees C), while IR64 (48%) and N22 (71%) were moderately and highly heat tolerant, respectively. There were significant differences among the genotypes in anther length and width, apical and basal pore lengths, apical pore area, and stigma and pistil length. Temperature also affected some of these traits, increasing anther pore size and reducing stigma length. Nonetheless, variation in the number of pollen on the stigma could not be related to measured morphological traits. Variation in spikelet fertility was highly correlated (r=0.97, n=6) with the proportion of spikelets with > or = 20 germinated pollen grains on the stigma. A 2D-gel electrophoresis showed 46 protein spots changing in abundance, of which 13 differentially expressed protein spots were analysed by MS/MALDI-TOF. A cold and a heat shock protein were found significantly up-regulated in N22, and this may have contributed to the greater heat tolerance of N22. The role of differentially expressed proteins and morphology during anther dehiscence and pollination in shaping heat tolerance and susceptibility is discussed.
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Affiliation(s)
- S. V. K. Jagadish
- Plant Environment Laboratory, University of Reading, Cutbush Lane, Shinfield, Reading RG2 9AF, UK
- Plant Breeding, Genetics and Biochemistry Division, International Rice Research Institute, DAPO BOX 7777, Metro Manila, Philippines
| | - R. Muthurajan
- Plant Breeding, Genetics and Biochemistry Division, International Rice Research Institute, DAPO BOX 7777, Metro Manila, Philippines
| | - R. Oane
- Plant Breeding, Genetics and Biochemistry Division, International Rice Research Institute, DAPO BOX 7777, Metro Manila, Philippines
| | - T. R. Wheeler
- Plant Environment Laboratory, University of Reading, Cutbush Lane, Shinfield, Reading RG2 9AF, UK
| | - S Heuer
- Plant Breeding, Genetics and Biochemistry Division, International Rice Research Institute, DAPO BOX 7777, Metro Manila, Philippines
| | - J. Bennett
- Plant Breeding, Genetics and Biochemistry Division, International Rice Research Institute, DAPO BOX 7777, Metro Manila, Philippines
| | - P. Q. Craufurd
- Plant Environment Laboratory, University of Reading, Cutbush Lane, Shinfield, Reading RG2 9AF, UK
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Abstract
AIM The efficacy of sacral nerve stimulation (SNS) to treat faecal incontinence has been demonstrated in the short- and mid-term. We analysed SNS outcome in the first patients with a permanent neurostimulator in whom follow-up ranges up to 14 years. METHOD Of 12 patients who underwent SNS from 1994 to 1999, 9 were eligible for long-term analysis (defined as a minimum of 7 years). In 3 the device had to be removed because of pain or neurological disease. Functional outcome was monitored prospectively by standardized questionnaire. For efficacy, the recorded frequency of incontinent episodes over 2-week periods and the Wexner Score were obtained yearly after implant. Quality of life measures (FIQL scale [QoL]) were introduced in 1998. Stimulation parameter adjustments, battery longevity, and complications were documented. RESULTS Mean follow-up in the nine patients was 9.8 years (range 7-14), over which time efficacy persisted. Clinical improvement was significant (baseline vs last follow-up): median percentage of incontinent bowel movements/week 40% (range 9-100) vs 0% (0-60%; P = 0.008), median number of incontinent episodes/week, 9 (range 2-58) vs 0 (0-29; P = 0.012); median Cleveland Clinic Score, 17 (range 12-19) vs 10 (3-14; P < 0.007); QoL improved in all categories. Pulse generator exchange was required in eight of the nine patients after a mean of 7.4 years for battery fatigue (mean 2.1 V). Complications occurred in five of the original 12 and were therapy-related, but not technique-related, in four patients. CONCLUSION Sacral nerve stimulation is an effective and safe long-term treatment for faecal incontinence. Clinical outcome is stable over time.
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Affiliation(s)
- K E Matzel
- Chirurgische Klinik der Universität Erlangen, Erlangen, Germany.
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14
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Neeraja CN, Maghirang-Rodriguez R, Pamplona A, Heuer S, Collard BCY, Septiningsih EM, Vergara G, Sanchez D, Xu K, Ismail AM, Mackill DJ. A marker-assisted backcross approach for developing submergence-tolerant rice cultivars. Theor Appl Genet 2007; 115:767-76. [PMID: 17657470 DOI: 10.1007/s00122-007-0607-0] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Accepted: 07/02/2007] [Indexed: 05/04/2023]
Abstract
Submergence stress regularly affects 15 million hectares or more of rainfed lowland rice areas in South and Southeast Asia. A major QTL on chromosome 9, Sub1, has provided the opportunity to apply marker assisted backcrossing (MAB) to develop submergence tolerant versions of rice cultivars that are widely grown in the region. In the present study, molecular markers that were tightly linked with Sub1, flanking Sub1, and unlinked to Sub1 were used to apply foreground, recombinant, and background selection, respectively, in backcrosses between a submergence-tolerant donor and the widely grown recurrent parent Swarna. By the BC(2)F(2) generation a submergence tolerant plant was identified that possessed Swarna type simple sequence repeat (SSR) alleles on all fragments analyzed except the tip segment of rice chromosome 9 that possessed the Sub1 locus. A BC(3)F(2) double recombinant plant was identified that was homozygous for all Swarna type alleles except for an approximately 2.3-3.4 Mb region surrounding the Sub1 locus. The results showed that the mega variety Swarna could be efficiently converted to a submergence tolerant variety in three backcross generations, involving a time of two to three years. Polymorphic markers for foreground and recombinant selection were identified for four other mega varieties to develop a wider range of submergence tolerant varieties to meet the needs of farmers in the flood-prone regions. This approach demonstrates the effective use of marker assisted selection for a major QTL in a molecular breeding program.
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Affiliation(s)
- C N Neeraja
- International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
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15
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Hofmann U, Heuer S, Meder K, Boehler J, Lange V, Quaschning T, Ertl G, Bonz A. The proinflammatory cytokines TNF-alpha and IL-1 beta impair economy of contraction in human myocardium. Cytokine 2007; 39:157-62. [PMID: 17825578 DOI: 10.1016/j.cyto.2007.07.185] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [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: 04/01/2007] [Revised: 06/08/2007] [Accepted: 07/16/2007] [Indexed: 11/23/2022]
Abstract
Considerable experimental evidence has accumulated over the past years that proinflammatory cytokines, especially TNF-alpha and IL-1beta, impair myocardial function in different animal species. On the other hand, several prospective clinical trials studying TNF-alpha antagonist in patients with chronic heart failure were not able to demonstrate a benefit. As there might be a relevant species-related discrepancy, we intended to prove our previous results demonstrating impaired myocardial economy after exogenous administration of recombinant TNF-alpha in rat myocardium. In the present study, both TNF-alpha and IL-1beta not only revealed an immediate negative inotropic effect but also increased specific oxygen demand in human right-atrial myocardium. Enhanced oxygen consumption was not caused by an elevated basal metabolism but an impaired economy of contraction. Our results suggest that proinflammatory cytokines have a considerable effect on myocardial mechano-energetic parameters in human myocardium as well.
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Affiliation(s)
- U Hofmann
- University of Wurzburg, Medizinische Klinik und Poliklinik I, Abteilung Kardiologie, Germany.
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16
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Langhorst J, Heuer S, Drouven FU, Schwöbel HD, Reichenberger S, Neuhaus H. Evaluation of a new immunochromatographic based whole blood near patient test for the diagnosis of Helicobacter pylori infection. Z Gastroenterol 2002; 40:389-93. [PMID: 12055661 DOI: 10.1055/s-2002-32133] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Infection with H pylori is very common and may cause chronic gastritis, predisposes to gastric and duodenal ulcers, leads in some cases to gastric lymphoma and has been recognised as a class I gastric carcinogen. Rapid, inexpensive, reliable tests are needed to facilitate the diagnosis. METHODS This prospective clinical study was undertaken to evaluate a new whole blood antibody test (helicoCare) in correlation to three tests for diagnosis of H pylori infection (histology, ELISA and rapid urease test). 304 patients (mean age 56.5 years, range of 11-93 years) referred for esophagogastroduodenoscopy were included in this uni-centric study over a nine-month period. According to the guidelines for clinical trials in H pylori infection, patients with at least two positive tests were classified as positive for H pylori. RESULTS 132 patients (43.4 %) were positive for H pylori, of which helicoCare identified 118 missing one gastric and one duodenal ulcer. 172 patients (56.6 %) were H pylori negative, of which helicoCare identified 163. Sensitivity was proven to be 89.4 % and specificity 94.8 %. In a special subgroup of 75 patients younger or equal to 45 years, 28 patients were positive for H pylori (37.3 %). In this group a sensitivity of 85.7 % and a specificity of 97.9 % was found for the helicoCare. CONCLUSIONS The helicoCare test showed sufficient sensitivity and satisfying specificity for H pylori diagnosis similar to or better than those of rapid urease test or ELISA. The helicoCare whole blood test may be useful for in-office H pylori diagnosis especially in patients under 45 years.
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Affiliation(s)
- J Langhorst
- Evangelisches Krankenhaus, Düsseldorf, Germany.
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17
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Heuer S, Hansen S, Bantin J, Brettschneider R, Kranz E, Lörz H, Dresselhaus T. The maize MADS box gene ZmMADS3 affects node number and spikelet development and is co-expressed with ZmMADS1 during flower development, in egg cells, and early embryogenesis. Plant Physiol 2001; 127:33-45. [PMID: 11553732 PMCID: PMC117960 DOI: 10.1104/pp.127.1.33] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2001] [Revised: 03/21/2001] [Accepted: 05/22/2001] [Indexed: 05/18/2023]
Abstract
MADS box genes represent a large gene family of transcription factors with essential functions during flower development and organ differentiation processes in plants. Addressing the question of whether MADS box genes are involved in the regulation of the fertilization process and early embryo development, we have isolated two novel MADS box cDNAs, ZmMADS1 and ZmMADS3, from cDNA libraries of maize (Zea mays) pollen and egg cells, respectively. The latter gene is allelic to ZAP1. Transcripts of both genes are detectable in egg cells and in in vivo zygotes of maize. ZmMADS1 is additionally expressed in synergids and in central and antipodal cells. During early somatic embryogenesis, ZmMADS1 expression is restricted to cells with the capacity to form somatic embryos, and to globular embryos at later stages. ZmMADS3 is detectable only by more sensitive reverse transcriptase-PCR analyses, but is likewise expressed in embryogenic cultures. Both genes are not expressed in nonembryogenic suspension cultures and in isolated immature and mature zygotic embryos. During flower development, ZmMADS1 and ZmMADS3 are co-expressed in all ear spikelet organ primordia at intermediate stages. Among vegetative tissues, ZmMADS3 is expressed in stem nodes and displays a gradient with highest expression in the uppermost node. Transgenic maize plants ectopically expressing ZmMADS3 are reduced in height due to a reduced number of nodes. Reduction of seed set and male sterility were observed in the plants. The latter was due to absence of anthers. Putative functions of the genes during reproductive and vegetative developmental processes are discussed.
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Affiliation(s)
- S Heuer
- West Africa Rice Development Association, B.P. 96, St. Louis, Senegal
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18
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Dresselhaus T, Cordts S, Heuer S, Sauter M, Lörz H, Kranz E. Novel ribosomal genes from maize are differentially expressed in the zygotic and somatic cell cycles. Mol Gen Genet 1999; 261:416-27. [PMID: 10102378 DOI: 10.1007/s004380050983] [Citation(s) in RCA: 65] [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: 10/28/2022]
Abstract
We have isolated cDNAs representing more than 50 different genes from libraries of unfertilised egg cells and zygotes of maize, expression of which is up- or downregulated after in vitro fertilisation (IVF). Among the cDNAs isolated are seven which encode proteins that are probably involved in translation and two encoding proteins probably involved in DNA replication. The latter genes are strongly induced on fertilisation. This indicates that zygotic gene activation (ZGA) - the switch from maternal to embryonic control of development - occurs in the zygote shortly after fertilisation in higher plants - earlier than in animal systems so far investigated. Four novel transcripts for ribosomal proteins (S21A, S21B, L39, P0) involved in ribosome biosynthesis and translation were analysed in more detail. The expression of all four genes correlates with cell division activity and is strongly induced during the G1 phase of the somatic cell cycle. A different mode of regulation operates in the first embryonic cell cycle: relatively large amounts of transcript are stored in the unfertilised egg cells, and by 18 h after IVF, two ribosomal genes are induced while a third is downregulated. These results indicate that using the combination of single-cell culture techniques with novel molecular methods, it is possible to isolate and study numerous genes expressed in female gametes and zygotes of higher plants. The detailed analysis of the four ribosomal protein genes demonstrates that the zygotic and somatic cell cycles are differentially regulated.
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Affiliation(s)
- T Dresselhaus
- University of Hamburg, Applied Plant Molecular Biology II, Germany.
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19
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Abstract
Electron transporting oxidoreductases at biological membranes mediate several physiological processes. While such activities are well known and widely accepted as physiologically significant for other biological membranes, oxidoreductase activities found at the plasma membrane of plants are still being neglected. The ubiquity of the oxidoreductases in the plasma membrane suggests that the activity observed is of major importance in fact up to now no plant without redox activity at the plasmalemma is known. Involvement in proton pumping, membrane energization, ion channel regulation, iron reduction, nutrient uptake, signal transduction, and growth regulation has been proposed. However, positive proof for one of the numerous theories about the physiological function of the system is still missing. Evidence for an involvement in signalling and regulation of growth and transport activities at the plasma membrane is strong, but the high activity of the system displayed in some experiments also suggests function in defense against pathogens.
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Affiliation(s)
- S Lüthje
- Universität Hamburg, Institut für Allgemeine Botanik, Hamburg, Germany
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20
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Abstract
Betacyanins from the bracts of Bougainvillea glabra were isolated and characterized by a combination of spectroscopic techniques (DAD-HPLC, NMR, LC-MS, GC-MS, electrospray MS, tandem MS) as gomphrenin I (betanidin 6-O-beta-glucoside) and various derivatives of bougainvillein-v (betanidin 6-O-beta-sophoroside), i.e. mono- and diglucosylsophorosides which are acylated with 4-coumaric and caffeic acid (mono- and diesters). Besides the betacyanins, B. glabra bracts accumulated large amounts of flavonols (kaempferol and quercetin conjugates) reaching ratios of flavonol to betacyanin of 1:1.
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Affiliation(s)
- S Heuer
- Institut für Pharmazeutische Biologie, Technischen Universität Braunschweig, Germany
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21
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Heuer S, Strack D. Synthesis of betanin from betanidin and UDP-glucose by a protein preparation from cell suspension cultures of Dorotheanthus bellidiformis (Burm. f.) N. E. Br. Planta 1992; 186:626-628. [PMID: 24186795 DOI: 10.1007/bf00198045] [Citation(s) in RCA: 13] [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: 08/29/1991] [Accepted: 10/16/1991] [Indexed: 06/02/2023]
Abstract
Protein preparations from cell-suspension cultures of Dorotheanthus bellidiformis (Aizoaceae) catalyzed the formation of betanin (betanidin 5-O-glucoside) from betanidin and uridine 5'-diphosphate(UDP)-glucose. The enzyme activity can be classified as UDP-glucose: betanidin 5-O-β-glucosyltransferase (EC 2.4.1).
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Affiliation(s)
- S Heuer
- Institut für Pharmazeutische Biologie der Technischen Universität Braunschweig, Mendelssohnstrasse 1, W-3300, Braunschweig, Germany
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22
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Nobel PS, Lüttge U, Heuer S, Ball E. Influence of Applied NaCl on Crassulacean Acid Metabolism and Ionic Levels in a Cactus, Cereus validus. Plant Physiol 1984; 75:799-803. [PMID: 16663707 PMCID: PMC1066996 DOI: 10.1104/pp.75.3.799] [Citation(s) in RCA: 3] [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] [Indexed: 05/09/2023]
Abstract
To determine possible physiological responses to salinity, seedlings of Cereus validus Haworth, a cactus from Salinas Grandes, Argentina, were treated with up to 600 millimolar NaCl for up to 16 days when they were about 9 months old and 100 millimeters tall. Salt stress decreased stem biomass, e.g. it was 19.7 grams for controls and 11.4 grams for plants treated with 400 millimolar NaCl for 14 days. Nocturnal CO(2) uptake in these obligate Crassulacean acid metabolism (CAM) plants was inhibited 67% upon treatment with 400 millimolar NaCl for 14 days (controls, 181 millimoles CO(2) per square meter), while nocturnal accumulation of malate was inhibited 49% (controls, 230 millimoles malate per square meter). The larger accumulation of malate as compared to uptake of atmospheric CO(2) suggests that internal CO(2) recycling occurred during the dark period. Such recycling was lower in the controls ( approximately 20%) than in the NaCl-treated plants ( approximately 50%). The nocturnal increase in malate and titratable acidity depended on the total daily photosynthetically active radiation available; measurements suggest a quantum requirment of 26 photons per malate. As NaCl in the medium was increased to 600 millimolar in daily increments of 50 millimolar, Na and Cl concentrations in the roots increased from about 7 to 100 millimolar, but K concentration in the cell sap remained near 26 millimolar. Concomitantly, concentrations of Na and Cl in the shoots increased from 8 to 17 millimolar and from 1 to 7 millimolar, respectively, while the K concentration increased about 16 to 60 millimolar. In plants maintained for 14 days at 500 millimolar NaCl, the root levels of Na and Cl increased to 260 millimolar, the shoot levels were about 60 millimolar, and the stem bases began to become necrotic. Such Na retention in the roots together with the special possibilities of carbon reutilization given by CAM are apparently survival mechanisms for the temporarily saline conditions experienced in its natural habitat.
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Affiliation(s)
- P S Nobel
- Institut für Botanik, Technische Hochschule Darmstadt, D-6100 Darmstadt, Federal Republic of Germany
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23
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Smith JA, Uribe EG, Ball E, Heuer S, Lüttge U. Characterization of the vacuolar ATPase activity of the crassulacean-acid-metabolism plant Kalanchoë daigremontiana. Receptor modulating. Eur J Biochem 1984; 141:415-20. [PMID: 6234166 DOI: 10.1111/j.1432-1033.1984.tb08207.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Plants performing crassulacean acid metabolism show a large nocturnal accumulation of malic acid in the vacuole of the photosynthetic cells. It has been postulated that an H+-translocating ATPase energizes the transport of malic acid across the tonoplast into the vacuole. In the present work we have characterized the ATPase activity associated with vacuoles of the crassulacean-acid-metabolism plant Kalanchoë daigremontiana and compare it with other phosphohydrolases. Vacuoles were isolated by polybase-induced lysis of mesophyll-cell protoplasts. The vacuoles had a high activity of unspecific acid phosphatase (pH optimum 5.3). The acid phosphatase was strongly inhibited by ammonium molybdate (with 50% inhibition at about 0.5 mmol m-3), but was not completely inhibited even at much higher ammonium-molybdate concentrations. In contrast, the vacuolar ATPase activity, assayed in the presence of 100 mmol m-3 ammonium molybdate, had a pH optimum of 8.0. ATP was the preferred substrate, but GTP, ITP and ADP were hydrolyzed at appreciable rates. The mean ATPase activity at pH 8.0 was 14.5 nmol h-1 (10(3) vacuoles)-1, an average 13% of which was attributable to residual acid-phosphatase activity. Inorganic-pyrophosphatase activity could not be demonstrated unambiguously. The vacuolar ATPase activity was Mg2+-dependent, had an apparent Km for MgATP2- of 0.31 mol m-3, and was 32% stimulated by 50 mol m-3 KCl. Of the inhibitors tested, oligomycin slightly inhibited the vacuolar ATPase activity and diethylstilbestrol and NO-3 were both markedly inhibitory. Dicyclohexylcarbodiimide and tributyltin were also strongly inhibitory. Tributyltin caused a 50% inhibition at about 0.3 mmol m-3. This is taken as evidence that the vacuolar ATPase might function as an H+-translocating ATPase. It is shown that the measured activity of the vacuolar ATPase would be of the right order to account for the observed rates of nocturnal malic-acid accumulation in K. daigremontiana.
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