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Tiller C, Reindl M, Holzknecht M, Lechner I, Troger F, Oberhollenzer F, von der Emde S, Kremser T, Mayr A, Bauer A, Metzler B, Reinstadler SJ. Relation of plasma neuropeptide-Y with myocardial function and infarct severity in acute ST-elevation myocardial infarction. Eur J Intern Med 2024:S0953-6205(24)00137-7. [PMID: 38555253 DOI: 10.1016/j.ejim.2024.03.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/01/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND Acute myocardial infarction is associated with the release of the co-transmitter neuropeptide-Y (NPY). NPY acts as a potent vasoconstrictor and is associated with microvascular dysfunction after ST-elevation myocardial infarction (STEMI). This study comprehensively evaluated the association of plasma NPY with myocardial function and infarct severity, visualized by cardiac magnetic resonance (CMR) imaging, in STEMI patients revascularized by primary percutaneous coronary intervention (PCI). METHODS In this observational study, we included 260 STEMI patients enrolled in the prospective MARINA-STEMI (NCT04113356) study. Plasma NPY concentrations were measured by an immunoassay 24h after PCI from peripheral venous blood samples. Left ventricular ejection fraction (LVEF), global longitudinal strain (GLS), infarct size (IS) and microvascular obstruction (MVO) were determined using CMR imaging. RESULTS Median plasma concentrations of NPY were 70 [interquartile range (IQR):35-115] pg/ml. NPY levels above median were significantly associated with lower LVEF (48%vs.52%, p=0.004), decreased GLS (-8.8%vs.-12.6%, p<0.001) and larger IS (17%vs.13%, p=0.041) in the acute phase after infarction as well as after 4 months (LVEF:50%vs.52%, p=0.030, GLS:-10.5vs.-12.9,p<0.001,IS:13%vs.10%,p=0.011). In addition, NPY levels were significantly related to presence of MVO (58%vs.52%, p=0.041). Moreover, in multivariable linear regression analysis, NPY remained significantly associated with all investigated CMR parameters (LVEF:p<0.001,GLS:p<0.001,IS:p=0.003,MVO:p=0.042) independent of other established clinical variables including high-sensitivity cardiac troponin T, pre-interventional TIMI flow 0 and left anterior descending artery as culprit lesion location. CONCLUSION High plasma levels of NPY, measured 24h after STEMI, were independently associated with lower LVEF, decreased GLS, larger IS as well as presence of MVO, indicating plasma NPY as a novel clinical risk marker post STEMI.
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Affiliation(s)
- Christina Tiller
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Martin Reindl
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Magdalena Holzknecht
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Ivan Lechner
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Felix Troger
- University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Fritz Oberhollenzer
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Sebastian von der Emde
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Thomas Kremser
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Agnes Mayr
- University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Axel Bauer
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Bernhard Metzler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Sebastian J Reinstadler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria.
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Lechner I, Reindl M, Oberhollenzer F, Tiller C, Holzknecht M, Fink P, Kremser T, Bonatti P, Troger F, Henninger B, Mayr A, Bauer A, Metzler B, Reinstadler SJ. Association of dysglycaemia with persistent infarct core iron in patients with acute ST-segment elevation myocardial infarction. J Cardiovasc Magn Reson 2024; 26:100996. [PMID: 38237898 DOI: 10.1016/j.jocmr.2024.100996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 01/11/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND Dysglycaemia increases the risk of myocardial infarction and subsequent recurrent cardiovascular events. However, the role of dysglycaemia in ischemia/reperfusion injury with development of irreversible myocardial tissue alterations remains poorly understood. In this study we aimed to investigate the association of ongoing dysglycaemia with persistence of infarct core iron and their longitudinal changes over time in patients undergoing primary percutaneous coronary intervention (PCI) for acute ST-segment elevation myocardial infarction (STEMI). METHODS We analyzed 348 STEMI patients treated with primary PCI between 2016 and 2021 that were included in the prospective MARINA-STEMI study (NCT04113356). Peripheral venous blood samples for glucose and glycated hemoglobin (HbA1c) measurements were drawn on admission and 4 months after STEMI. Cardiac magnetic resonance (CMR) imaging including T2 * mapping for infarct core iron assessment was performed at both time points. Associations of dysglycaemia with persistent infarct core iron and iron resolution at 4 months were calculated using multivariable regression analysis. RESULTS Intramyocardial hemorrhage was observed in 147 (42%) patients at baseline. Of these, 89 (61%) had persistent infarct core iron 4 months after infarction with increasing rates across HbA1c levels (<5.7%: 33%, ≥5.7: 79%). Persistent infarct core iron was independently associated with ongoing dysglycaemia defined by HbA1c at 4 months (OR: 7.87 [95% CI: 2.60-23.78]; p < 0.001), after adjustment for patient characteristics and CMR parameters. The independent association was present even after exclusion of patients with diabetes (pre- and newly diagnosed, n = 16). CONCLUSIONS In STEMI patients treated with primary PCI, ongoing dysglycaemia defined by HbA1c is independently associated with persistent infarct core iron and a lower likelihood of iron resolution. These findings suggest a potential association between ongoing dysglycaemia and persistent infarct core iron, which warrants further investigation for therapeutic implications.
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Affiliation(s)
- Ivan Lechner
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Martin Reindl
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Fritz Oberhollenzer
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Christina Tiller
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Magdalena Holzknecht
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Priscilla Fink
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Thomas Kremser
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Paolo Bonatti
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Felix Troger
- University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Benjamin Henninger
- University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Agnes Mayr
- University Clinic of Radiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Axel Bauer
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Bernhard Metzler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria
| | - Sebastian J Reinstadler
- University Clinic of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Anichstrasse 35, A-6020 Innsbruck, Austria.
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Günther B, Kremser T, Susoff M, Formanek P, Fery A, Wießner S. Ensuring patient safety by rational choice of color masterbatch for medical device applications—A case study investigating the properties of an
ABS
/
SAN
blend colored by different masterbatches based on styrenic polymers. J Appl Polym Sci 2022. [DOI: 10.1002/app.51844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Petr Formanek
- Leibniz‐Institut für Polymerforschung Dresden e. V. Dresden Germany
| | - Andreas Fery
- Leibniz‐Institut für Polymerforschung Dresden e. V. Dresden Germany
| | - Sven Wießner
- Leibniz‐Institut für Polymerforschung Dresden e. V. Dresden Germany
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Kremser T, Susoff M, Roth S, Kaschta J, Schubert DW. Degradation studies of a commercial radiation‐resistant polypropylene sterilized by gamma and electron beam technology before and after subsequent accelerated aging cycles. J Appl Polym Sci 2019. [DOI: 10.1002/app.48436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Kremser
- B.Braun Melsungen AG 34212 Melsungen Germany
- Institute of Polymer MaterialsUniversity Erlangen‐Nuremberg 91058 Erlangen Germany
| | | | - Stefan Roth
- University of Applied Sciences Schmalkalden 98574 Schmalkalden Germany
| | - Joachim Kaschta
- Institute of Polymer MaterialsUniversity Erlangen‐Nuremberg 91058 Erlangen Germany
| | - Dirk W. Schubert
- Institute of Polymer MaterialsUniversity Erlangen‐Nuremberg 91058 Erlangen Germany
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Evans E, Howlett S, Kremser T, Simpson J, Kayess R, Trollor J. Service development for intellectual disability mental health: a human rights approach. J Intellect Disabil Res 2012; 56:1098-1109. [PMID: 23106753 DOI: 10.1111/j.1365-2788.2012.01636.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND People with intellectual disability (ID) experience higher rates of major mental disorders than their non-ID peers, but in many countries have difficulty accessing appropriate mental health services. The aim of this paper is to review the current state of mental health services for people with ID using Australia as a case example, and critically appraise whether such services currently meet the standards set by the Convention on the Rights of Persons with Disabilities. METHODS The literature regarding the current state of mental health services for people with ID was reviewed, with a particular focus on Australia. RESULTS The review highlighted a number of issues to be addressed to meet the mental health needs of people with ID to ensure that their human rights are upheld like those of all other citizens. Many of the barriers to service provision encountered in Australia are likely also to be relevant to other nations, including the culture of division between disability and mental health services, the inadequate training of both disability and mental health workers in ID mental health, and the lack of relevant epidemiological data. None of these barriers are insurmountable. CONCLUSIONS Recommendations are made for adopting a human rights-based approach towards the development and provision of mental health services for people with ID. These include improved policy with measurable outcomes, improved service access via clear referral pathways and the sharing of resources across disability and mental health services, and improved service delivery through training and education initiatives for both the mental health and disability workforce.
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Affiliation(s)
- E Evans
- Department of Development Disability Neuropsychiatry, School of Psychiatry, University of New South Wales, Sydney, Australia
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Sroka R, Havel M, Betz C, Kremser T, Leunig A. Clinical feasibility trial on 1940 nm Tm: fiber laser intervention of hyperplastic inferior nasal turbinates. ACTA ACUST UNITED AC 2012. [DOI: 10.1515/plm-2012-0021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractA number of different laser systems have been used for volume reduction of hyperplastic nasal turbinates. In case of endonasal application, fiber-controlled diode lasers are preferred due to reasons of cost and practicability. The aim of this clinical feasibility study was to show the coagulative and tissue reducing effects using a novel Tm: fiber laser system emitting at λ=1940 nm.This clinical feasibility trial included 11 patients suffering from hyperplastic inferior nasal turbinates, who were therapy-refractory to conservative medical treatment. The obstructive nasal cavity was treated using the 1940 nm Tm: fiber laser at <5 W output power. The treatment was performed in non-contact mode under endoscopic control. Patients’ symptoms were documented both preoperatively and on days 1–3 and 28 postoperatively using a non-validated questionnaire. Additionally, an endoscopic examination was performed.None of the patients showed infections, and no hemorrhages or other complications occurred intra- or postoperatively. The mean laser activation time during the surgical procedure was extremely short being 28.0±8.5 s. In conjunction with a low power setting (median, 3 W; mean±standard deviation, 3.3±1.1 W), a low energy of 90.2±37.8 J was applied. A significant reduction in nasal obstruction could be documented in all patients on day 28 postoperatively. Evaluation, as assessed preoperatively and 4 weeks postoperatively, showed significant subjective improvements.The treatment of hyperplastic inferior turbinates using a 1940 nm Tm: fiber laser provides sufficient tissue reduction in a short operation time using low total energy. Patients described a significant improvement in nasal breathing postoperatively.
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Kremser T, Evans A, Moore A, Luxford K, Begbie S, Bensoussan A, Marigliani R, Zorbas H. Use of complementary therapies by Australian women with breast cancer. Breast 2008; 17:387-94. [DOI: 10.1016/j.breast.2007.12.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Revised: 11/08/2007] [Accepted: 12/04/2007] [Indexed: 11/30/2022] Open
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de Vries A, Griebel J, Kremser C, Judmaier W, Gneiting T, Debbage P, Kremser T, Pfeiffer KP, Buchberger W, Lukas P. Monitoring of tumor microcirculation during fractionated radiation therapy in patients with rectal carcinoma: preliminary results and implications for therapy. Radiology 2000; 217:385-91. [PMID: 11058632 DOI: 10.1148/radiology.217.2.r00nv02385] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To measure microcirculatory changes during chemoirradiation and to correlate perfusion index (PI) values with therapy outcome. MATERIALS AND METHODS Perfusion data in 11 patients with cT3 (clinical staging, tumor invaded the perirectal tissue) rectal carcinoma who underwent preoperative chemoirradiation were analyzed. Perfusion data were acquired by using a T1 mapping sequence with a whole-body magnetic resonance (MR) imager. After contrast medium was intravenously infused at a constant rate, concentration-and-time curves were evaluated for arterial blood and tumor. All patients underwent MR imaging before and at constant intervals during chemoirradiation. Clinical stages before therapy were compared with surgical stages after therapy. RESULTS Spatial and temporal resolution on dynamic T1 maps were sufficient to reveal changes in contrast medium accumulation in the tumor. Comparison of PI values and radiation dose showed a significant increase in the 1st (P: =.003) and 2nd weeks (P: =.01) of treatment; values subsequently returned to pretreatment levels or showed a renewed increase. High initial PI values correlated with greater lymph node downstaging (P: =.042). CONCLUSION Dynamic T1 mapping provides a suitable tool for monitoring tumor microcirculation during chemoirradiation and offers the potential for individual optimization of therapeutic procedures. Furthermore, these results indicate that the PI map may serve as a prognostic factor.
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Affiliation(s)
- A de Vries
- Departments of Radiotherapy and Radio-oncology, Leopold-Franzens-Universität Innsbruck, Austria.
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Kremser T, Hasenpusch-Theil K, Wagner E, Buttgereit D, Renkawitz-Pohl R. Expression of the beta3 tubulin gene (beta Tub60D) in the visceral mesoderm of Drosophila is dependent on a complex enhancer that binds Tinman and UBX. Mol Gen Genet 1999; 262:643-58. [PMID: 10628847 DOI: 10.1007/s004380051127] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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
The beta3 tubulin gene of Drosophila is expressed in the major mesodermal derivatives during their differentiation. The gene is subject to complex stage- and tissue-specific transcriptional control by upstream as well as downstream regions. Analysis of the vm1 enhancer, which is responsible for tissue-specific expression in the visceral mesoderm and is localized in the intron, revealed a complex modular arrangement of regulatory elements. In vitro and in vivo experiments uncovered two binding sites, termed UBX1 and UBX2, for the product of the homeotic gene Ultrabithorax (Ubx), which are required for high-level expression in pPS6 and PS7. Further analysis of the vm1 enhancer revealed that deletion of a specific element, termed element 7 (e7), abolishes transcription of the lacZ reporter gene in all parasegments except pPS6/PS7. Gel-retardation and footprint analysis identified a binding site for the homeodomain protein Tinman, which is essential for the specification of the dorsal mesoderm, within e7. Simultaneous deletion of two further sequence blocks in the vml enhancer, named elements 3 (e3), and 6 (e6), results in a reduction analogous to that caused by removal of e7. The e6 sequence contains conserved motifs also found in the visceral enhancer of the Ubx gene. Therefore we conclude that these elements act in concert with the Tinman binding site to achieve high expression levels. Thus the vm1 enhancer of the beta3 tubulin gene contains a complex array of elements that are involved in transactivation by a combination of tissue- and position-specific factors including Tinman and UBX.
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Affiliation(s)
- T Kremser
- Fachbereich Biologie, Entwicklungsbiologie, Philipps-Universität Marburg, Germany
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Kremser T, Gajewski K, Schulz RA, Renkawitz-Pohl R. Tinman regulates the transcription of the beta3 tubulin gene (betaTub60D) in the dorsal vessel of Drosophila. Dev Biol 1999; 216:327-39. [PMID: 10588882 DOI: 10.1006/dbio.1999.9425] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
During Drosophila embryogenesis, the beta3 tubulin gene is expressed in the visceral and somatic mesoderm as well as in the dorsal vessel. Transcription of the gene is limited to four pairs of cardioblasts per segment. Here we show that its expression in the dorsal vessel (dv) is mediated by a 333-bp enhancer located upstream of the gene. The homeodomain protein Tinman is also expressed in these cardioblasts, implying that Tinman might be a key regulator of the beta3 tubulin gene. Gel retardation and footprint assays indeed revealed two Tinman binding sites within the dv-specific enhancer. We analyzed the relevance of the Tinman binding sites in a transgenic fly assay and observed distinct functions for both sites. The BS(Tin-1460) site is absolutely required for expression in cardioblasts, while BS(Tin-1425) is needed for high-level expression. Thus, these two Tinman binding sites act in concert to drive beta3 tubulin gene expression during heart development. Tinman initially functions in the specification of visceral mesoderm and heart progenitors, but remains expressed in cardioblasts until dorsal closure. Overall, our data demonstrate a late function for Tinman in the regulation of beta3 tubulin gene expression in the forming heart of Drosophila.
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Affiliation(s)
- T Kremser
- Fachbereich Biologie, Entwicklungsbiologie, Philipps-Universität Marburg, Marburg, 35032, Germany
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Bergemann J, Florian V, Kremser T, Klein A. Two different macronuclear EF-1 alpha-encoding genes of the ciliate Euplotes crassus are very dissimilar in their sequences, copy numbers and transcriptional activities. Gene X 1996; 168:109-12. [PMID: 8626055 DOI: 10.1016/0378-1119(95)00728-8] [Citation(s) in RCA: 8] [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: 01/31/2023] Open
Abstract
Genes (EFA) encoding the translation elongation factor EF-1 alpha (EFA) or the prokaryotic homolog EFTu frequently occur in multiple copies in the same organism. This has been interpreted either in terms of a potential of differential gene expression during different phases of development, or as gene dosage adaptation to the need of high-level production of the gene products. Since ciliates can differentially amplify their genes, the latter argument would lead to the expectation of only one EFA gene in the macronucleus. However, we have found two such genes which strongly differ in both copy number and codon usage. Both transcripts are detectable at very different levels. The expression of the genes takes place both in the vegetative and sexual phases, i.e.,during conjugation.
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Affiliation(s)
- J Bergemann
- Molecular Genetics, Department of Biology, Philipps-University, Marburg, Germany
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