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Anger M, Hofmann J, Ruf B, Steinborn M, Reber D, Warncke K, Rieber N. Cough-induced chylothorax in a two-year-old boy - case report and review of the literature. BMC Pediatr 2023; 23:416. [PMID: 37612714 PMCID: PMC10464381 DOI: 10.1186/s12887-023-04221-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/31/2023] [Indexed: 08/25/2023] Open
Abstract
BACKGROUND Chylothorax is a very rare form of pleural effusion in children, especially after the neonatal period, and predominantly occurs secondary to cardiothoracic surgery. It can lead to significant respiratory distress, immunodeficiency, and malnutrition. Effective treatment strategies are therefore required to reduce morbidity. CASE PRESENTATION A previously healthy two-year old boy was admitted with history of heavy coughing followed by progressive dyspnea. The chest X-ray showed an extensive opacification of the right lung. Ultrasound studies revealed a large pleural effusion of the right hemithorax. Pleural fluid analysis delivered the unusual diagnosis of chylothorax, most likely induced by preceded excessive coughing. After an unsuccessful treatment attempt with a fat-free diet and continuous pleural drainage for two weeks, therapy with octreotide was initiated. This led to complete and permanent resolution of his pleural effusion within 15 days, without any side effects. CONCLUSIONS Severe cough may be a rare cause of chylothorax in young children. Octreotide seems to be an effective and safe treatment of spontaneous or traumatic chylothorax in children. There is, however, a lack of comprehensive studies for chylothorax in children and many issues concerning diagnostic strategies and treatment algorithms remain.
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Affiliation(s)
- Melanie Anger
- Department of Pediatrics, Kinderklinik München Schwabing, Munich Klinik and School of Medicine, Technical University of Munich, Kölner Platz 1, 80804, Munich, Germany
| | - Julian Hofmann
- Department of Pediatrics, Kinderklinik München Schwabing, Munich Klinik and School of Medicine, Technical University of Munich, Kölner Platz 1, 80804, Munich, Germany
| | - Bettina Ruf
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Center Munich, Technical University of Munich, Munich, Germany
| | - Marc Steinborn
- Department of Diagnostic and Interventional and Pediatric Radiology, Kinderklinik München Schwabing, Munich, Germany
| | - Daniela Reber
- Department of Pediatrics, Kinderklinik München Schwabing, Munich Klinik and School of Medicine, Technical University of Munich, Kölner Platz 1, 80804, Munich, Germany
| | - Katharina Warncke
- Department of Pediatrics, Kinderklinik München Schwabing, Munich Klinik and School of Medicine, Technical University of Munich, Kölner Platz 1, 80804, Munich, Germany
| | - Nikolaus Rieber
- Department of Pediatrics, Kinderklinik München Schwabing, Munich Klinik and School of Medicine, Technical University of Munich, Kölner Platz 1, 80804, Munich, Germany.
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Hofmann J, Anger M, Rieber N. 2/w mit druckindolenter Schwellung im Halsbereich. Monatsschr Kinderheilkd 2022. [DOI: 10.1007/s00112-022-01525-5] [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: 11/30/2022]
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Kern A, Kuhlmann PH, Matl S, Ege M, Maison N, Eckert J, von Both U, Behrends U, Anger M, Frühwald MC, Gerstlauer M, Woelfle J, Neubert A, Melter M, Liese J, Goettler D, Sing A, Liebl B, Hübner J, Klein C. Surveillance of Acute SARS-CoV-2 Infections in Elementary Schools and Daycare Facilities in Bavaria, Germany (09/2020-03/2021). Front Pediatr 2022; 10:888498. [PMID: 35874561 PMCID: PMC9298551 DOI: 10.3389/fped.2022.888498] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 06/03/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Here we report our results of a multi-center, open cohort study ("COVID-Kids-Bavaria") investigating the distribution of acute SARS-CoV-2 infections among children and staff in 99 daycare facilities and 48 elementary schools in Bavaria, Germany. MATERIALS AND METHODS Overall, 2,568 children (1,337 school children, 1,231 preschool children) and 1,288 adults (466 teachers, 822 daycare staff) consented to participate in the study and were randomly tested in three consecutive phases (September/October 2020, November/December 2020, March 2021). In total, 7,062 throat swabs were analyzed for SARS-CoV-2 by commercial RT-PCR kits. RESULTS In phase I, only one daycare worker tested positive. In phase II, SARS-CoV-2 was detected in three daycare workers, two preschool children, and seven school children. In phase III, no sample tested positive. This corresponds to a positive test rate of 0.05% in phase I, 0.4% in phase II and 0% in phase III. Correlation of a positive PCR test result with the local-7-day incidence values showed a strong association of a 7-day-incidence of more than 100/100,000 as compared to <100/100,000 (OR = 10.3 [1.5-438], p < 0.005). After phase III, antibody testing was offered to 713 study participants in elementary schools. A seroprevalence rate of 7.7% (students) and 4.5% (teachers) was determined. DISCUSSION During the initial waves of the SARS-CoV-2 pandemic, the risk of a positive SARS-CoV-2 result correlated positively with the local 7-day incidence. Hence, the occurrence of SARS-CoV-2 infections were reflected in schools and daycare facilities. An increased risk of SARS-CoV-2 transmission in the setting of daycare and elementary schooling was unlikely.
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Affiliation(s)
- Anna Kern
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany
| | - Pia H Kuhlmann
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany
| | - Stefan Matl
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany
| | - Markus Ege
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany.,German Center for Lung Research (DZL), Munich, Germany
| | - Nicole Maison
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany.,German Center for Lung Research (DZL), Munich, Germany.,Helmholtz Center Munich, Institute for Asthma- and Allergy Prevention (IAP), German Research Center for Environmental Health (GmbH), Munich, Germany
| | - Jana Eckert
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany
| | - Ulrich von Both
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany.,German Center for Infection Research (DZIF), Partner Site Munich, Munich, Germany
| | - Uta Behrends
- Department of Pediatrics, Kinderklinik München Schwabing, StKM GmbH und Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Melanie Anger
- Department of Pediatrics, Kinderklinik München Schwabing, StKM GmbH und Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Michael C Frühwald
- Paediatric and Adolescent Medicine University Hospital Augsburg, Augsburg, Germany
| | - Michael Gerstlauer
- Paediatric and Adolescent Medicine University Hospital Augsburg, Augsburg, Germany
| | - Joachim Woelfle
- Department of Paediatric and Adolescent Medicine, Erlangen University Hospital, Erlangen, Germany
| | - Antje Neubert
- Department of Paediatric and Adolescent Medicine, Erlangen University Hospital, Erlangen, Germany
| | - Michael Melter
- University Children's Hospital Regensburg (KUNO), Regensburg, Germany
| | - Johannes Liese
- Department of Pediatrics, University Hospital Würzburg, Würzburg, Germany
| | - David Goettler
- Department of Pediatrics, University Hospital Würzburg, Würzburg, Germany
| | - Andreas Sing
- Bavarian Health and Food Safety Authority, Oberschleißheim, Germany
| | - Bernhard Liebl
- Bavarian Health and Food Safety Authority, Oberschleißheim, Germany
| | - Johannes Hübner
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany
| | - Christoph Klein
- Department of Pediatrics, Dr. von Hauner Children's Hospital, LMU Klinikum, Ludwig-Maximilians-Universität, Munich, Germany
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Anger M, Valovska T, Beloeil H, Lirk P, Joshi GP, Van de Velde M, Raeder J. PROSPECT guideline for total hip arthroplasty: a systematic review and procedure-specific postoperative pain management recommendations. Anaesthesia 2021; 76:1082-1097. [PMID: 34015859 DOI: 10.1111/anae.15498] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2021] [Indexed: 12/11/2022]
Abstract
The aim of this systematic review was to develop recommendations for the management of postoperative pain after primary elective total hip arthroplasty, updating the previous procedure-specific postoperative pain management (PROSPECT) guidelines published in 2005 and updated in July 2010. Randomised controlled trials and meta-analyses published between July 2010 and December 2019 assessing postoperative pain using analgesic, anaesthetic, surgical or other interventions were identified from MEDLINE, Embase and Cochrane databases. Five hundred and twenty studies were initially identified, of which 108 randomised trials and 21 meta-analyses met the inclusion criteria. Peri-operative interventions that improved postoperative pain include: paracetamol; cyclo-oxygenase-2-selective inhibitors; non-steroidal anti-inflammatory drugs; and intravenous dexamethasone. In addition, peripheral nerve blocks (femoral nerve block; lumbar plexus block; fascia iliaca block), single-shot local infiltration analgesia, intrathecal morphine and epidural analgesia also improved pain. Limited or inconsistent evidence was found for all other approaches evaluated. Surgical and anaesthetic techniques appear to have a minor impact on postoperative pain, and thus their choice should be based on criteria other than pain. In summary, the analgesic regimen for total hip arthroplasty should include pre-operative or intra-operative paracetamol and cyclo-oxygenase-2-selective inhibitors or non-steroidal anti-inflammatory drugs, continued postoperatively with opioids used as rescue analgesics. In addition, intra-operative intravenous dexamethasone 8-10 mg is recommended. Regional analgesic techniques such as fascia iliaca block or local infiltration analgesia are recommended, especially if there are contra-indications to basic analgesics and/or in patients with high expected postoperative pain. Epidural analgesia, femoral nerve block, lumbar plexus block and gabapentinoid administration are not recommended as the adverse effects outweigh the benefits. Although intrathecal morphine 0.1 mg can be used, the PROSPECT group emphasises the risks and side-effects associated with its use and provides evidence that adequate analgesia may be achieved with basic analgesics and regional techniques without intrathecal morphine.
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Affiliation(s)
- M Anger
- Service d'Anesthésie Réanimation et Médecine Péri-opératoire, CHU Rennes, Université Rennes, Rennes, France
| | - T Valovska
- Service d'Anesthésie Réanimation et Médecine Péri-opératoire, CHU Rennes, Université Rennes, Rennes, France
| | - H Beloeil
- Department of Anesthesiology, Henry Ford Health Systems, Wayne State School of Medicine, Detroit, MI, USA
| | - P Lirk
- Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - G P Joshi
- Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - M Van de Velde
- Department of Cardiovascular Sciences, Katholieke Universiteit Leuven, Leuven, Belgium.,Department of Anaesthesiology, UZLeuven, Leuven, Belgium
| | - J Raeder
- Department of Anaesthesiology, Oslo University Hospital, Oslo, Norway.,Division of Clinical Medicine, Medical Faculty, University of Oslo, Oslo, Norway
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Anger M, Scheufele F, Ramanujam D, Meyer K, Nakajima H, Field LJ, Engelhardt S, Sarikas A. Genetic ablation of Cullin-RING E3 ubiquitin ligase 7 restrains pressure overload-induced myocardial fibrosis. PLoS One 2020; 15:e0244096. [PMID: 33351822 PMCID: PMC7755222 DOI: 10.1371/journal.pone.0244096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 12/03/2020] [Indexed: 11/20/2022] Open
Abstract
Fibrosis is a pathognomonic feature of structural heart disease and counteracted by distinct cardioprotective mechanisms, e.g. activation of the phosphoinositide 3-kinase (PI3K) / AKT pro-survival pathway. The Cullin-RING E3 ubiquitin ligase 7 (CRL7) was identified as negative regulator of PI3K/AKT signalling in skeletal muscle, but its role in the heart remains to be elucidated. Here, we sought to determine whether CRL7 modulates to cardiac fibrosis following pressure overload and dissect its underlying mechanisms. For inactivation of CRL7, the Cullin 7 (Cul7) gene was deleted in cardiac myocytes (CM) by injection of adeno-associated virus subtype 9 (AAV9) vectors encoding codon improved Cre-recombinase (AAV9-CMV-iCre) in Cul7flox/flox mice. In addition, Myosin Heavy Chain 6 (Myh6; alpha-MHC)-MerCreMer transgenic mice with tamoxifen-induced CM-specific expression of iCre were used as alternate model. After transverse aortic constriction (TAC), causing chronic pressure overload and fibrosis, AAV9-CMV-iCre induced Cul7-/- mice displayed a ~50% reduction of interstitial cardiac fibrosis when compared to Cul7+/+ animals (6.7% vs. 3.4%, p<0.01). Similar results were obtained with Cul7flox/floxMyh6-Mer-Cre-MerTg(1/0) mice which displayed a ~30% reduction of cardiac fibrosis after TAC when compared to Cul7+/+Myh6-Mer-Cre-MerTg(1/0) controls after TAC surgery (12.4% vs. 8.7%, p<0.05). No hemodynamic alterations were observed. AKTSer473 phosphorylation was increased 3-fold (p<0.01) in Cul7-/- vs. control mice, together with a ~78% (p<0.001) reduction of TUNEL-positive apoptotic cells three weeks after TAC. In addition, CM-specific expression of a dominant-negative CUL71152stop mutant resulted in a 16.3-fold decrease (p<0.001) of in situ end-labelling (ISEL) positive apoptotic cells. Collectively, our data demonstrate that CM-specific ablation of Cul7 restrains myocardial fibrosis and apoptosis upon pressure overload, and introduce CRL7 as a potential target for anti-fibrotic therapeutic strategies of the heart.
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Affiliation(s)
- Melanie Anger
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
- German Center for Cardiovascular Research, Partner Site Munich Heart Alliance, Munich, Germany
| | - Florian Scheufele
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
- German Center for Cardiovascular Research, Partner Site Munich Heart Alliance, Munich, Germany
| | - Deepak Ramanujam
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
- German Center for Cardiovascular Research, Partner Site Munich Heart Alliance, Munich, Germany
| | - Kathleen Meyer
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
- German Center for Cardiovascular Research, Partner Site Munich Heart Alliance, Munich, Germany
| | - Hidehiro Nakajima
- Wells Center for Pediatric Research and Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Loren J. Field
- Wells Center for Pediatric Research and Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Stefan Engelhardt
- Institute of Pharmacology and Toxicology, Technische Universität München, Munich, Germany
- German Center for Cardiovascular Research, Partner Site Munich Heart Alliance, Munich, Germany
| | - Antonio Sarikas
- Institute of Pharmacology and Toxicology, Paracelsus Medical University, Salzburg, Austria
- * E-mail:
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Literak I, Pinowski J, Anger M, Juricova Z, Kyu-Hwang H, Romanowski J. Toxoplasma gondii antibodies in house sparrows (Passer domesticus) and tree sparrows (P. montanus). Avian Pathol 2012; 26:823-7. [PMID: 18483947 DOI: 10.1080/03079459708419255] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Synanthropic sparrows in Poland and the Czech Republic were tested for Toxoplasma gondii antibodies by an indirect fluorescent antibody test (titre>/=10). T. gondii antibodies were demonstrated in 12.3% of 227 house sparrows (Passer domesticus) and 4.9% of 41 tree sparrows (Passer montanus).
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Affiliation(s)
- I Literak
- Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
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Tomek W, Melo Sterza FA, Kubelka M, Wollenhaupt K, Torner H, Anger M, Kanitz W. Regulation of translation during in vitro maturation of bovine oocytes: the role of MAP kinase, eIF4E (cap binding protein) phosphorylation, and eIF4E-BP1. Biol Reprod 2002; 66:1274-82. [PMID: 11967187 DOI: 10.1095/biolreprod66.5.1274] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [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: 11/01/2022] Open
Abstract
Meiotic maturation of mammalian oocytes (transition from prophase I to metaphase II) is accompanied by complex changes in the protein phosphorylation pattern. At least two major protein kinases are involved in these events; namely, cdc2 kinase and mitogen-activated protein (MAP) kinase, because the inhibition of these kinases arrest mammalian oocytes in the germinal vesicle (GV) stage. We show that during meiotic maturation of bovine oocytes, the translation initiation factor, eIF4E (the cap binding protein), gradually becomes phosphorylated. This substantial phosphorylation begins at the time of germinal vesicle breakdown (GVBD) and continues to the metaphase II stage. The onset of eIF4E phosphorylation occurs in parallel with a significant increase in overall protein synthesis. However, although eIF4E is nearly fully phosphorylated in metaphase II oocytes, protein synthesis reaches only basal levels at this stage, similar to that of prophase I oocytes, in which the factor remains unphosphorylated. We present evidence that a specific repressor of eIF4E, the binding protein 4E-BP1, is present and could be involved in preventing eIF4E function in metaphase II stage oocytes. Recently, two protein kinases, called Mnk1 and Mnk2, have been identified in somatic cells as eIF4E kinases, both of which are substrates of MAP kinase in vivo. In bovine oocytes, a specific inhibitor of cdk kinases, butyrolactone I, arrests oocytes in GV stage and prevents activation of both cdc2 and MAP kinase. Under these conditions, the phosphorylation of eIF4E is also blocked, and its function in initiation of translation is impaired. In contrast, PD 098059, a specific inhibitor of the MAP kinase activation pathway, which inhibits the MAP kinase kinase, called MEK function, leads only to a postponed GVBD, and a delay in MAP kinase and eIF4E phosphorylation. These results indicate that in bovine oocytes, 1) MAP kinase activation is only partially dependent on MEK kinase, 2) MAP kinase is involved in eIF4E phosphorylation, and 3) the abundance of fully phosphorylated eIF4E does not necessarily directly stimulate protein synthesis. A possible MEK kinase-independent pathway of MAP kinase phosphorylation and the role of 4E-BP1 in repressing translation in metaphase II oocytes are discussed.
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Affiliation(s)
- W Tomek
- Research Institute for the Biology of Farm Animals, 18146 Dummerstorf-Rostock, Germany.
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Kues WA, Anger M, Carnwath JW, Paul D, Motlik J, Niemann H. Cell cycle synchronization of porcine fetal fibroblasts: effects of serum deprivation and reversible cell cycle inhibitors. Biol Reprod 2000; 62:412-9. [PMID: 10642581 DOI: 10.1095/biolreprod62.2.412] [Citation(s) in RCA: 170] [Impact Index Per Article: 7.1] [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: 11/01/2022] Open
Abstract
The success of somatic nuclear transfer critically depends on the cell cycle stage of the donor nucleus and the recipient cytoplast. In this study we tested serum deprivation as well as two reversible cell cycle inhibitors, aphidicolin and butyrolactone I, for their ability to synchronize porcine fetal fibroblasts at either G0 stage or G1/S or G2/M transition. The synchronization efficiency of the various protocols was determined by fluorescence-activated cell sorting (FACS), cell proliferation assays, and semiquantitative multiplex reverse transcription-polymerase chain reaction detection of the cell cycle-regulated porcine Polo-like kinase mRNA (Plk-p). FACS measurements revealed that 66.6-73.3% of the porcine fetal fibroblasts were in G0/G1 stage (2C DNA content) in serum-supplemented medium. Short periods of 24-72 h of serum deprivation significantly increased the proportion of cells at G0/G1 phase to 77.9-80.2%, and mitotic activity had already terminated after 48 h. Prolonged culture in serum-deprived medium induced massive DNA fragmentation. Aphidicolin treatment led to an accumulation of 81.9 +/- 4.9% of cells at the G1/S transition. Butyrolactone I arrested 81.0 +/- 5.8% of the cells at the end of G1 stage and 37.0 +/- 6.8% at the G2/M transition. The effects of both chemical inhibitors were fully reversible, and their removal led to a rapid progression in the cell cycle. The measurement of Plk-p expression allowed discrimination between the presumptive G0 phase induced by serum deprivation and the G1/S transition arrest achieved by chemical inhibitors. These data indicate that porcine fetal fibroblasts can be effectively synchronized at various cell cycle stages without compromising their proliferation capacity.
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Affiliation(s)
- W A Kues
- Department of Biotechnology, Institut für Tierzucht und Tierverhalten, Mariensee, D-31535 Neustadt, Germany
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Pandita TK, Westphal CH, Anger M, Sawant SG, Geard CR, Pandita RK, Scherthan H. Atm inactivation results in aberrant telomere clustering during meiotic prophase. Mol Cell Biol 1999; 19:5096-105. [PMID: 10373558 PMCID: PMC84352 DOI: 10.1128/mcb.19.7.5096] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.8] [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: 11/20/2022] Open
Abstract
A-T (ataxia telangiectasia) individuals frequently display gonadal atrophy, and Atm-/- mice show spermatogenic failure due to arrest at prophase of meiosis I. Chromosomal movements take place during meiotic prophase, with telomeres congregating on the nuclear envelope to transiently form a cluster during the leptotene/zygotene transition (bouquet arrangement). Since the ATM protein has been implicated in telomere metabolism of somatic cells, we have set out to investigate the effects of Atm inactivation on meiotic telomere behavior. Fluorescent in situ hybridization and synaptonemal complex (SC) immunostaining of structurally preserved spermatocytes I revealed that telomere clustering occurs aberrantly in Atm-/- mice. Numerous spermatocytes of Atm-/- mice displayed locally accumulated telomeres with stretches of SC near the clustered chromosome ends. This contrasted with spermatogenesis of normal mice, where only a few leptotene/zygotene spermatocytes I with clustered telomeres were detected. Pachytene nuclei, which were much more abundant in normal mice, displayed telomeres scattered over the nuclear periphery. It appears that the timing and occurrence of chromosome polarization is altered in Atm-/- mice. When we examined telomere-nuclear matrix interactions in spermatocytes I, a significant difference was observed in the ratio of soluble versus matrix-associated telomeric DNA sequences between meiocytes of Atm-/- and control mice. We propose that the severe disruption of spermatogenesis during early prophase I in the absence of functional Atm may be partly due to altered interactions of telomeres with the nuclear matrix and distorted meiotic telomere clustering.
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Affiliation(s)
- T K Pandita
- Columbia University, New York, New York 10032, USA.
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Anger M, Lompré AM, Vallot O, Marotte F, Rappaport L, Samuel JL. Cellular distribution of Ca2+ pumps and Ca2+ release channels in rat cardiac hypertrophy induced by aortic stenosis. Circulation 1998; 98:2477-86. [PMID: 9832495 DOI: 10.1161/01.cir.98.22.2477] [Citation(s) in RCA: 30] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The response of ventricular myocytes to pressure overload is heterogeneous and not spatially coordinated. We investigated whether or not the alterations in SERCA and RyR gene expression are homogeneous within the myocardium. METHODS AND RESULTS The cellular distribution of mRNAs and proteins encoding the 2 sarco(endo)plasmic reticulum Ca2+-ATPase (SERCA) isoforms (SERCA 2a and 2b) and 2 Ca2+ release channels (the ryanodine receptor, RyR, and the IP3 receptor, IP3R) were analyzed by in situ hybridization and immunofluorescence, respectively. Analyses were performed during early (1 and 5 days) and late (1 month) stages of cardiac hypertrophy induced in rat by thoracic aortic stenosis (AS). The results indicated that 1 and 5 days after AS, the cellular distribution of SERCA 2a and RyR2 mRNAs in right ventricle and atrium was similar to controls but the mRNA levels appeared to decrease in some areas of the left ventricle (LV). One month after AS, the distribution of SERCA 2a mRNA and protein became heterogeneous throughout the LV, whereas RyR2 mRNA and protein levels were decreased in a homogeneous manner. SERCA 2b, poorly expressed in both cardiomyocytes and vessels of controls, was increased 4-fold 1 month after AS in coronary arteries only. In both sham (Sh) and AS, SERCA 3 and IP3R mRNAs were mainly found in the vessels. CONCLUSIONS In severe hypertrophy, decreased accumulation of SERCA 2a was heterogeneous and not compensated by an induction of SERCA 2b in the cardiomyocytes. Decrease in RyR2 expression was more homogeneous and not compensated by an increased IP3R expression.
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Affiliation(s)
- M Anger
- "Gènes et protéines musculaires," Signalisation Cellulaire, Université Paris-Sud, INSERM U127, Paris, France
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Motlik J, Carnwath JW, Herrmann D, Terletski V, Anger M, Niemann H. Automated recording of RNA differential display patterns from pig granulosa cells. Biotechniques 1998; 24:148-53. [PMID: 9454967 DOI: 10.2144/98241rr02] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We have developed a protocol for fast, nonradioactive, mRNA differential display reverse transcription PCR (DDRT-PCR) based on a commercial automated sequencer with RNA isolated from pig granulosa cells. We sought to discover conditions that would minimize the problem of using relatively small primers labeled with large infrared dye molecule, IR41, required for the sequencer. Extended IR41-labeled primers IR41-AAGC-T11-A, IE41-AAGC-T11-C and IR41-AAGC-T11-G gave more consistent differential display patterns than shorter anchored primers (IR41-T11A, IR41-T11C and IR41-T11G) without the additional (AAGC) cloning site. The optimal concentration of the extended labeled (downstream) primers was 20 pmol when 13-mer arbitrary (upstream) primers were used at a concentration of 4 pmol. Background smear and the intensity of amplified bands was significantly improved by changing from conventional Taq DNA polymerase to AmpliTaq Gold polymerase, which permits an improved "hot start" for the reaction. Running time (during which a digitized gel image is recorded) for a 26-cm polyacrylamide gel was 4 h, enabling us to analyze 90 reactions in an 8-h day. This protocol offers a rapid and reliable nonradioactive method for comparing gene expression patterns for various research or diagnostic purposes.
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Affiliation(s)
- J Motlik
- Institute of Animal Physiology and Genetics, Libechov, Czech Republic
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Anger M, Lambert F, Chemla D, Desche P, Scalbert E, Lompre AM, Lecarpentier Y. Sarcoplasmic reticulum Ca2+ pumps in heart and diaphragm of cardiomyopathic hamster: effects of perindopril. Am J Physiol 1995; 268:H1947-53. [PMID: 7771544 DOI: 10.1152/ajpheart.1995.268.5.h1947] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The polymyopathy of the Syrian hamster is associated with alterations of cellular calcium regulation and contractile performance of cardiac and skeletal muscles and, in particular, the diaphragm. Angiotensin-converting enzyme (ACE) inhibitors have been shown to preserve contractile performance. Therefore we analyzed the expression of the genes coding for the sarco(endo)plasmic reticulum Ca(2+)-adenosinetriphosphatase (SERCA) in heart and diaphragm of the cardiomyopathic Syrian hamster (CSH) from the dilated strain Bio 53-58, and we tested the influence of ACE inhibition on accumulation of the different SERCA mRNAs. In the diaphragm of healthy hamsters, two SERCA mRNA isoforms were present: SERCA 1 and SERCA 2. At 6 mo of age, the myopathic process resulted in decreased levels of SERCA 1, whereas the level of SERCA 2 was unchanged. The ACE inhibitor perindopril (1 mg.kg-1.day-1), administered by force feeding from 1 to 6 mo of age, had no effect on the SERCA 1 mRNA level. In heart, the myopathy was associated with a depressed level of SERCA 2 mRNA in 9- but not in 6-mo-old animals. Perindopril treatment from 6 to 9 mo reversed cardiac hypertrophy and the relative decrease in SERCA 2 mRNA level. Preventive treatment with perindopril from 1 to 9 mo tended to prevent (not significantly) the development of cardiac hypertrophy and reduction in SERCA gene expression. In conclusion, the myopathic process affects SERCA gene expression in the diaphragm and subsequently in the heart. Perindopril treatment can prevent SERCA mRNA loss in heart but not in diaphragm.
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Affiliation(s)
- M Anger
- Institut National de la Santé de la Recherche Médicale Unité 275-Laboratoire d'Optique Appliqueé, Centre de l'Yvette, Palaiseau, France
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Gorza L, Vettore S, Volpe P, Sorrentino V, Samuel JL, Anger M, Lompré AM. Cardiac myocytes differ in mRNA composition for sarcoplasmic reticulum Ca2+ channels and Ca2+ pumps. Ann N Y Acad Sci 1995; 752:141-8. [PMID: 7755253 DOI: 10.1111/j.1749-6632.1995.tb17417.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- L Gorza
- CNR Unit for Muscle Biology and Physiopathology, University of Padova, Italy
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Centeno F, Deschamps S, Lompré AM, Anger M, Moutin MJ, Dupont Y, Palmgren MG, Villalba JM, Møller JV, Falson P. Expression of the sarcoplasmic reticulum Ca(2+)-ATPase in yeast. FEBS Lett 1994; 354:117-22. [PMID: 7957891 DOI: 10.1016/0014-5793(94)01104-4] [Citation(s) in RCA: 37] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We describe here an easy system for the production of mg amounts of the rabbit Ca(2+)-ATPase SERCA 1a in the yeast S. cerevisiae. The protein is present in several membranes, including the plasma membrane of the yeast, in a native conformation. It can be purified by immunoprecipitation and can be phosphorylated from ATP in a Ca(2+)-dependent manner. Using a temperature-sensitive secretion mutant strain, the fully active protein can also be obtained in secretory vesicles.
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Affiliation(s)
- F Centeno
- Département de Biologie Cellulaire et Moléculaire, CEA, Gif sur Yvette, France
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Affiliation(s)
- A M Lompré
- URA CNRS 1131, Université Paris-Sud, Centre d'Orsay, France
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Moutin MJ, Cuillel M, Rapin C, Miras R, Anger M, Lompré AM, Dupont Y. Measurements of ATP binding on the large cytoplasmic loop of the sarcoplasmic reticulum Ca(2+)-ATPase overexpressed in Escherichia coli. J Biol Chem 1994; 269:11147-54. [PMID: 8157641] [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: 01/29/2023] Open
Abstract
The large cytoplasmic loop of the sarcoplasmic reticulum Ca(2+)-ATPase (LCL), situated between Lys329 and Phe740, is believed to contain both its phosphorylation and ATP binding domains. A cDNA fragment coding for this amino acid sequence was generated in vitro and cloned in vector pQE8 which allowed the overexpression in Escherichia coli of this Ca(2+)-ATPase domain fused with a cluster of 6 histidines at its NH2 terminus. The fusion protein produced in an insoluble form within bacteria was solubilized in 4 M urea, purified on immobilized Ni2+, and then renatured by elimination of urea. More than 4 mg of purified renatured fusion protein was obtained from 500 ml of culture. ATP binding on the refolded protein was demonstrated by two methods: 1) detection of ATP-induced intrinsic fluorescence change and 2) binding of the fluorescent ATP analogue 2',3'-O-(2,4,6-trinitrophenyl)-adenosine-5'-triphosphate (TNP-ATP) and its chase by ATP. It is shown that the LCL protein has one single TNP-ATP binding site having a dissociation constant (Kd) of 1.6-1.9 microM. Both methods yielded a Kd for ATP around 200 microM. Binding of other nucleotides was detected with a sequence of Kd identical to that found for native Ca(2+)-ATPase: ATP < ADP < GTP < AMP < ITP. A Mg2+ binding site was also found on the LCL protein (Kd = 100 microM at pH 7.2). The fluorescence of bound TNP-ATP was found to be highly dependent on Mg2+ binding on this site.
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Affiliation(s)
- M J Moutin
- Laboratoire de Biophysique Moléculaire et Cellulaire, URA 520 du Centre National de la Recherche Scientifique, Grenoble, France
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Anger M, Samuel JL, Marotte F, Wuytack F, Rappaport L, Lompré AM. In situ mRNA distribution of sarco(endo)plasmic reticulum Ca(2+)-ATPase isoforms during ontogeny in the rat. J Mol Cell Cardiol 1994; 26:539-50. [PMID: 8072009 DOI: 10.1006/jmcc.1994.1064] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The Sarco(endo)plasmic reticulum Ca(2+)-ATPase (SERCA) plays a crucial role in maintaining the Ca2+ homeostasis, which itself, controls various essential cellular function. The existence of several SERCA isoforms, encoded by three different genes and produced by alternative splicing of pre-mRNA transcripts, has been established by cDNA cloning. However, the temporo-spatial evolution of their expression during ontogeny was unknown. We have used in situ hybridization to determine the cellular distribution of three of these mRNA isoforms, SERCA 2a, SERCA 2b and SERCA 3 during rat ontogeny and focused our study on the cardiovascular system. We demonstrate that early in embryogenesis, SERCA 3 mRNA is highly expressed in the heart tube and is also present in the yolk sac. In 14-16 days embryos, SERCA 3 mRNA has disappeared from the heart but is expressed in the aorta and in discrete foci of the liver. Later on, its expression in the cardiovascular system is restricted to the arterial endothelium. SERCA 2a mRNA is coexpressed with SERCA 3 mRNA in the heart tube and remains expressed in the cardiomyocytes throughout life. It is transiently expressed in skeletal muscle at the onset of differentiation. In early foetal life, SERCA 2b is expressed in the mesenteric area and thereafter in all cell types at various levels. Our data indicate that (i) expression of SERCA 2b is neither tissue-specific nor developmentally regulated (ii) expression of SERCA 2a and SERCA 3 isoforms is regulated in a cell specific manner during development and suggest that the SERCA 3 gene plays a role in controlling the function of endothelial cells during vasculogenesis.
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Affiliation(s)
- M Anger
- INSERM U 275, LOA, ENSTA, Ecole Polytechnique, Palaiseau, France
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Moutin M, Cuillel M, Rapin C, Miras R, Anger M, Lompré A, Dupont Y. Measurements of ATP binding on the large cytoplasmic loop of the sarcoplasmic reticulum Ca(2+)-ATPase overexpressed in Escherichia coli. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(19)78103-4] [Citation(s) in RCA: 46] [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] [Indexed: 11/25/2022] Open
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Anger M, Samuel JL, Marotte F, Wuytack F, Rappaport L, Lompré AM. The sarco(endo)plasmic reticulum Ca(2+)-ATPase mRNA isoform, SERCA 3, is expressed in endothelial and epithelial cells in various organs. FEBS Lett 1993; 334:45-8. [PMID: 8224225 DOI: 10.1016/0014-5793(93)81677-r] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.8] [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: 01/29/2023]
Abstract
The sarco(endo)plasmic reticulum Ca(2+)-ATPase mRNA isoform, SERCA 3, was previously shown to be expressed in a great variety of muscle and non-muscle tissues [(1989) J. Biol. Chem. 264, 18568] but its cellular localization within these organs was unknown. We have used in situ hybridization and RNase protection techniques to demonstrate that SERCA 3 mRNA is expressed in specific cell types, namely the endothelial and epithelial cells.
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Affiliation(s)
- M Anger
- INSERM U 275-LOA-ENSTA, Ecole Polytechnique, Centre de l'Yvette, Palaiseau, France
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Abstract
The presence of myosin alpha heavy chain in the rabbit masseter has been previously suggested at the protein level [(1991) Basic App. Myol. 1, 23-34; (1991) Histochem. J. 23, 160-170]. To confirm this finding, we cloned most of the mRNA corresponding to the myosin heavy chain S2 subfragment. PCR analysis and subsequent nucleotide sequence determination of the amplified cDNA demonstrates the presence of a myosin alpha heavy chain mRNA in rabbit masticatory muscles.
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Affiliation(s)
- A d'Albis
- Laboratoire de Biologie Physicochimique, URA, CNRS 1131, Université Paris-Sud, Orsay, France
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Le Jemtel TH, Lambert F, Levitsky DO, Clergue M, Anger M, Gabbiani G, Lompré AM. Age-related changes in sarcoplasmic reticulum Ca(2+)-ATPase and alpha-smooth muscle actin gene expression in aortas of normotensive and spontaneously hypertensive rats. Circ Res 1993; 72:341-8. [PMID: 8418987 DOI: 10.1161/01.res.72.2.341] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The expression of the sarcoplasmic reticulum (SR) Ca(2+)-ATPase gene and the SR Ca2+ pump function were investigated in thoracic aortas of 5- and 17-week-old normotensive Wistar-Kyoto (WKY) rats and spontaneously hypertensive rats (SHRs). The relative level of the two isoforms of SR Ca(2+)-ATPase mRNA expressed in the aorta (i.e., SERCA 2a and SERCA 2b) was determined by quantitative S1 nuclease protection analysis and normalized to the level of alpha-smooth muscle (alpha-Sm) actin mRNA. The level of alpha-Sm actin mRNA itself was normalized to the level of 18S ribosomal RNA using slot-blot hybridization assays. Total SR Ca2+ pump activity was estimated by measuring the rate of oxalate-supported Ca2+ uptake in homogenates. At 5 weeks, the amount of SERCA 2a and SERCA 2b mRNA, normalized to 18S ribosomal RNA, and the ratio of alpha-Sm actin mRNA to 18S RNA were identical in SHR and WKY rats. The Ca2+ pump activity was similar in the two strains of rats at 5 weeks. From 5 to 17 weeks, the amount of SERCA 2a mRNA increased in both strains while the level of SERCA 2b mRNA remained constant. The Ca2+ pump activity was unchanged in SHRs and tended to decrease in WKY rats. Accordingly, the change in the ratio of the SR Ca(2+)-ATPase mRNA isoforms does not appear to influence SR function. The level of alpha-Sm actin mRNA and SERCA 2a mRNA increased in parallel from 5 to 17 weeks in both strains.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T H Le Jemtel
- INSERM U275-LOA, ENSTA-Ecole Polytechnique, Palaiseau, France
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Miller P, Huffer W, McIntyre D, Yanover M, Anger M, Harrison M, Gillum D. Bone histomorphometry after long-term treatment with cyclical phosphorus and etidronate. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0169-6009(92)91900-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Miller P, Huffer W, McIntyre D, Yanover M, Anger M, Harrison M, Gillum D. Bone histomorphometry after long-term treatment with cyclical phosphorus and etidronate. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0169-6009(92)92300-f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Friedhofer H, Bonetti EY, Anger M, Carvalho DDA, Golcman R, Ferreira MC. [Lip sinus]. Rev Hosp Clin Fac Med Sao Paulo 1984; 39:193-6. [PMID: 6531615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Golcman B, Friedhofer H, Anger M, Golcman R. Giant congenital composite melanocytic nevus on the face and scalp: treatment by multiple resections and grafting. J Dermatol Surg Oncol 1980; 6:130-2. [PMID: 6986418 DOI: 10.1111/j.1524-4725.1980.tb00827.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Surgical ablation of a giant congenital composite melanocytic nevus on a good part of the side of the face and scalp in a series of operations is described and illustrated. It was technically and cosmetically successful.
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Waitzberg DL, Lauretti DE, Anger J, Anger M. [Routine care in tracheostomized patients]. Rev Enferm Nov Dimens 1977; 3:166-8. [PMID: 586748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Souza AM, Anger M, Anger J. [Infection in the surgical patient. Care for its prevention]. Rev Enferm Nov Dimens 1976; 2:80-3. [PMID: 59375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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