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Bolik J, Krause F, Stevanovic M, Gandraß M, Thomsen I, Schacht SS, Rieser E, Müller M, Schumacher N, Fritsch J, Wichert R, Galun E, Bergmann J, Röder C, Schafmayer C, Egberts JH, Becker-Pauly C, Saftig P, Lucius R, Schneider-Brachert W, Barikbin R, Adam D, Voss M, Hitzl W, Krüger A, Strilic B, Sagi I, Walczak H, Rose-John S, Schmidt-Arras D. Inhibition of ADAM17 impairs endothelial cell necroptosis and blocks metastasis. J Exp Med 2022; 219:212921. [PMID: 34919140 PMCID: PMC8689681 DOI: 10.1084/jem.20201039] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/08/2021] [Accepted: 11/03/2021] [Indexed: 01/12/2023] Open
Abstract
Metastasis is the major cause of death in cancer patients. Circulating tumor cells need to migrate through the endothelial layer of blood vessels to escape the hostile circulation and establish metastases at distant organ sites. Here, we identified the membrane-bound metalloprotease ADAM17 on endothelial cells as a key driver of metastasis. We show that TNFR1-dependent tumor cell-induced endothelial cell death, tumor cell extravasation, and subsequent metastatic seeding is dependent on the activity of endothelial ADAM17. Moreover, we reveal that ADAM17-mediated TNFR1 ectodomain shedding and subsequent processing by the γ-secretase complex is required for the induction of TNF-induced necroptosis. Consequently, genetic ablation of ADAM17 in endothelial cells as well as short-term pharmacological inhibition of ADAM17 prevents long-term metastases formation in the lung. Thus, our data identified ADAM17 as a novel essential regulator of necroptosis and as a new promising target for antimetastatic and advanced-stage cancer therapies.
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Affiliation(s)
- Julia Bolik
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Freia Krause
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany.,Department of Biosciences, Paris-Lodron University Salzburg, Salzburg, Austria
| | - Marija Stevanovic
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Monja Gandraß
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Ilka Thomsen
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | | | - Eva Rieser
- Centre for Cell Death, Cancer and Inflammation, UCL Cancer Institute, University College London, London, United Kingdom.,Institute for Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
| | - Miryam Müller
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Neele Schumacher
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Jürgen Fritsch
- Institute of Immunology, Christian-Albrechts-University Kiel, Kiel, Germany.,Department of Infection Prevention and Infectious Diseases, University Hospital Regensburg, Regensburg, Germany
| | - Rielana Wichert
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Eithan Galun
- The Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Hospital, Ein Karem, Jerusalem, Israel
| | - Juri Bergmann
- Institute of Anatomy, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Christian Röder
- Institute for Experimental Cancer Research, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Clemens Schafmayer
- Department of General Surgery and Thoracic Surgery, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Jan-Hendrik Egberts
- Department of General Surgery and Thoracic Surgery, University Medical Center Schleswig-Holstein, Kiel, Germany
| | | | - Paul Saftig
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Ralph Lucius
- Institute of Anatomy, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Wulf Schneider-Brachert
- Department of Infection Prevention and Infectious Diseases, University Hospital Regensburg, Regensburg, Germany
| | - Roja Barikbin
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Dieter Adam
- Institute of Immunology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Matthias Voss
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Wolfgang Hitzl
- Research Office (Biostatistics), Paracelsus Medical University, Salzburg, Austria.,Research Program for Experimental Ophthalmology and Glaucoma, Paracelsus Medical University, Salzburg, Austria.,Department of Ophthalmology and Optometry, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Achim Krüger
- Institutes for Molecular Immunology and Experimental Oncology, Technical University of Munich, Munich, Germany
| | - Boris Strilic
- Department of Pharmacology, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Irit Sagi
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Henning Walczak
- Centre for Cell Death, Cancer and Inflammation, UCL Cancer Institute, University College London, London, United Kingdom.,Institute for Biochemistry I, Medical Faculty, University of Cologne, Cologne, Germany
| | - Stefan Rose-John
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Dirk Schmidt-Arras
- Institute of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany.,Department of Biosciences, Paris-Lodron University Salzburg, Salzburg, Austria
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Dimkov A, Gjorgievska E, Stevanovic M, Pavlevska M, Simonoska J. COVID-19 outbreak in North Macedonia: an overview of its impact on dentistry. Minerva Dent Oral Sci 2021; 71:39-47. [PMID: 34549574 DOI: 10.23736/s2724-6329.21.04537-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Since the pandemic of the novel corona virus - SARS-CoV-2 - has been declared and strict social measures have been introduced in the middle of March, including curfew, the dentistry had to adjust and find ways to better adapt itself to the new situation. This article provides a brief overview of the situation with COVID-19 in our country since the beginning of the pandemic, gives a reminder of what COVID-19 is, and which its modes of transmission are, and considers the ways of protection in dental offices taking into account that dentistry is one of the riskiest activities given the patient-dentist proximity and the use of specific high-speed handpieces. This review also provides an overview of the dental preventive measures taken worldwide, including in the field of Pediatric Dentistry, as well as an overview of dental patients' management, and gives possible best ways to care for healthy, sick or patients suspected for COVID-19. Finally, an extensive presentation of the way of work at the University Dental Clinical Center and the Faculty of Dental Medicine in Skopje, North Macedonia, over the last year is given, including protocols for admission of patients.
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Affiliation(s)
- Aleksandar Dimkov
- Department for Pediatric and Preventive Dentistry, Faculty of Dentistry, Skopje, Republic of North Macedonia -
| | - Elizabeta Gjorgievska
- Department for Pediatric and Preventive Dentistry, Faculty of Dentistry, Skopje, Republic of North Macedonia
| | - Marija Stevanovic
- Department for Pediatric and Preventive Dentistry, Faculty of Dentistry, Skopje, Republic of North Macedonia
| | - Meri Pavlevska
- Department for Pediatric and Preventive Dentistry, Faculty of Dentistry, Skopje, Republic of North Macedonia
| | - Jasna Simonoska
- Department for Pediatric and Preventive Dentistry, Faculty of Dentistry, Skopje, Republic of North Macedonia
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Gökengin D, Wilson-Davies E, Nazlı Zeka A, Palfreeman A, Begovac J, Dedes N, Tarashenko O, Stevanovic M, Patel R. 2021 European guideline on HIV testing in genito-urinary medicine settings. J Eur Acad Dermatol Venereol 2021; 35:1043-1057. [PMID: 33666276 DOI: 10.1111/jdv.17139] [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] [Received: 10/21/2020] [Accepted: 01/14/2021] [Indexed: 11/30/2022]
Abstract
Testing for HIV is critical for early diagnosis of HIV infection, providing long-term good health for the individual and prevention of onward transmission if antiretroviral treatment is initiated early. The main purpose of the 2021 European Guideline on HIV Testing in Genito-Urinary Settings is to provide advice on testing for HIV infection in individuals aged 16 years and older who present to sexually transmitted infection, genito-urinary or dermato-venereology clinics across Europe. The guideline presents the details of best practice and offers practical guidance to clinicians and laboratories to identify and offer HIV testing to appropriate patient groups.
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Affiliation(s)
- D Gökengin
- Faculty of Medicine, Department of Clinical Microbiology and Infectious Diseases, Ege University, Izmir, Turkey.,Ege University HIV/AIDS Research and Practice Center, Izmir, Turkey
| | - E Wilson-Davies
- Southampton Specialist Virology Center, University Hospitals Southampton, Southampton, UK
| | - A Nazlı Zeka
- Faculty of Medicine, Department of Clinical Microbiology and Infectious Diseases, Dokuz Eylül University, Izmir, Turkey
| | - A Palfreeman
- Department of Infectious Diseases, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - J Begovac
- Department of Infectious Diseases, University Hospital for Infectious Diseases, University of Zagreb School of Medicine, Zagreb, Croatia
| | - N Dedes
- Positive Voice, Athens, Greece
| | - O Tarashenko
- Head Center of Hygiene and Epidemiology, Federal Medical-Biological Agency (FMBA) of Russia, Moscow, Russia
| | - M Stevanovic
- Clinic for Infectious Diseases and Febrile Conditions, Skopje, Former Yugoslav Republic of Macedonia
| | - R Patel
- Solent NHS Trust, Southampton, UK
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Abstract
INTRODUCTION A segmental nerve defect from trauma results in significant loss of function of the extremity, and rarely occurs in isolation. Autografting of the nerve defect is the current gold standard. METHODS A review of the recent literature regarding peripheral nerve defects after trauma treated with autograft. RESULTS Identification of the zone of nerve injury is difficult and appropriate resection is critical for good outcomes. Meaningful recovery is more likely with application of excellent technique. Many of the factors affecting outcomes are not modifiable. CONCLUSION Nerve grafting for segmental nerve injuries continues to be an essential and appropriate treatment.
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Affiliation(s)
- J Geissler
- Department of Orthopaedic Surgery, University of Minnesota, Hennepin County Medical Center, 701 Park Avenue, Minneapolis, MN 55415, United States.
| | - M Stevanovic
- Department of Orthopaedic Surgery, University of Southern California, Keck School of Medicine, 1520 San Pablo St. Suite 2000, Los Angeles, CA 90033, United States.
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Bogavac-Stanojevic N, Stevanovic M, Zeljkovic A, Vekic J, Stefanovic A, Miljkovic M, Stjepanović Ž, Zeljkovic D, Trifunovic B, Janac J, Spasojevic-Kalimanovska V. Predictors of high molecular weight adiponectin in patients with colorectal cancer. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.278] [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: 11/24/2022]
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Görgülü K, Diakopoulos KN, Ai J, Schoeps B, Kabacaoglu D, Karpathaki AF, Ciecielski KJ, Kaya-Aksoy E, Ruess DA, Berninger A, Kowalska M, Stevanovic M, Wörmann SM, Wartmann T, Zhao Y, Halangk W, Voronina S, Tepikin A, Schlitter AM, Steiger K, Artati A, Adamski J, Aichler M, Walch A, Jastroch M, Hartleben G, Mantzoros CS, Weichert W, Schmid RM, Herzig S, Krüger A, Sainz B, Lesina M, Algül H. Levels of the Autophagy-Related 5 Protein Affect Progression and Metastasis of Pancreatic Tumors in Mice. Gastroenterology 2019; 156:203-217.e20. [PMID: 30296435 DOI: 10.1053/j.gastro.2018.09.053] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [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: 12/23/2017] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Cells in pancreatic ductal adenocarcinoma (PDAC) undergo autophagy, but its effects vary with tumor stage and genetic factors. We investigated the consequences of varying levels of the autophagy related 5 (Atg5) protein on pancreatic tumor formation and progression. METHODS We generated mice that express oncogenic Kras in primary pancreatic cancer cells and have homozygous disruption of Atg5 (A5;Kras) or heterozygous disruption of Atg5 (A5+/-;Kras), and compared them with mice with only oncogenic Kras (controls). Pancreata were analyzed by histology and immunohistochemistry. Primary tumor cells were isolated and used to perform transcriptome, metabolome, intracellular calcium, extracellular cathepsin activity, and cell migration and invasion analyses. The cells were injected into wild-type littermates, and orthotopic tumor growth and metastasis were monitored. Atg5 was knocked down in pancreatic cancer cell lines using small hairpin RNAs; cell migration and invasion were measured, and cells were injected into wild-type littermates. PDAC samples were obtained from independent cohorts of patients and protein levels were measured on immunoblot and immunohistochemistry; we tested the correlation of protein levels with metastasis and patient survival times. RESULTS A5+/-;Kras mice, with reduced Atg5 levels, developed more tumors and metastases, than control mice, whereas A5;Kras mice did not develop any tumors. Cultured A5+/-;Kras primary tumor cells were resistant to induction and inhibition of autophagy, had altered mitochondrial morphology, compromised mitochondrial function, changes in intracellular Ca2+ oscillations, and increased activity of extracellular cathepsin L and D. The tumors that formed in A5+/-;Kras mice contained greater numbers of type 2 macrophages than control mice, and primary A5+/-;Kras tumor cells had up-regulated expression of cytokines that regulate macrophage chemoattraction and differentiation into M2 macrophage. Knockdown of Atg5 in pancreatic cancer cell lines increased their migratory and invasive capabilities, and formation of metastases following injection into mice. In human PDAC samples, lower levels of ATG5 associated with tumor metastasis and shorter survival time. CONCLUSIONS In mice that express oncogenic Kras in pancreatic cells, heterozygous disruption of Atg5 and reduced protein levels promotes tumor development, whereas homozygous disruption of Atg5 blocks tumorigenesis. Therapeutic strategies to alter autophagy in PDAC should consider the effects of ATG5 levels to avoid the expansion of resistant and highly aggressive cells.
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Affiliation(s)
- Kivanc Görgülü
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Kalliope N Diakopoulos
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Jiaoyu Ai
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Benjamin Schoeps
- Institute of Molecular Immunology and Experimental Oncology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Derya Kabacaoglu
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Angeliki-Faidra Karpathaki
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Katrin J Ciecielski
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Ezgi Kaya-Aksoy
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Dietrich A Ruess
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Alexandra Berninger
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Marlena Kowalska
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Marija Stevanovic
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Sonja M Wörmann
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Thomas Wartmann
- Klinik für Chirurgie Bereich Experimentelle Operative Medizin, Universitätsklinikum Magdeburg, Magdeburg, Germany
| | - Yue Zhao
- Klinik für Chirurgie Bereich Experimentelle Operative Medizin, Universitätsklinikum Magdeburg, Magdeburg, Germany
| | - Walter Halangk
- Klinik für Chirurgie Bereich Experimentelle Operative Medizin, Universitätsklinikum Magdeburg, Magdeburg, Germany
| | - Svetlana Voronina
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Alexey Tepikin
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Anna Melissa Schlitter
- Institute of Pathology, Technische Universität München, Munich, Germany and German Cancer Consortium, Munich, Germany
| | - Katja Steiger
- Institute of Pathology, Technische Universität München, Munich, Germany and German Cancer Consortium, Munich, Germany; Comparative Experimental Pathology, Institute of Pathology, Technische Universität München, Munich, Germany
| | - Anna Artati
- Institute of Experimental Genetics, Genome Analysis Centre, Helmholtz Zentrum München, Neuherberg, Germany
| | - Jerzy Adamski
- Institute of Experimental Genetics, Genome Analysis Centre, Helmholtz Zentrum München, Neuherberg, Germany; Institute for Diabetes and Cancer, German Center for Diabetes Research, Neuherberg, Germany; Lehrstuhl für Experimentelle Genetik, Technische Universität München, Freising-Weihenstephan, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Jastroch
- Helmholtz Diabetes Center and German Diabetes Center, Helmholtz Zentrum München, Neuherberg, Germany
| | - Götz Hartleben
- Institute for Diabetes and Cancer, German Center for Diabetes Research, Neuherberg, Germany
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Centre, Harvard Medical School, Boston, Massachusetts
| | - Wilko Weichert
- Institute of Pathology, Technische Universität München, Munich, Germany and German Cancer Consortium, Munich, Germany
| | - Roland M Schmid
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Stephan Herzig
- Institute for Diabetes and Cancer, German Center for Diabetes Research, Neuherberg, Germany
| | - Achim Krüger
- Institute of Molecular Immunology and Experimental Oncology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Bruno Sainz
- Department of Biochemistry, School of Medicine, Autónoma University of Madrid, Madrid, Spain
| | - Marina Lesina
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.
| | - Hana Algül
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.
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Zivkovic I, Milasinovic D, Dobras J, Zaharijev S, Mehmedbegovic Z, Pavlovic A, Radomirovic M, Stevanovic M, Matic D, Tesic M, Ristic A, Seferovic P, Vukcevic V, Asanin M, Stankovic G. P4665Impact of the combined anemia and impaired left ventricular function on long-term outcome in STEMI patients undergoing primary PC. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Milosevic A, Milasinovic D, Dobras J, Zaharijev S, Stevanovic M, Radomirovic M, Pavlovic A, Mehmedbegovic Z, Dedovic V, Asanin M, Stankovic S, Vukcevic V, Stankovic G. P5590Association of older age with 30-day and 3-year mortality in patients undergoing primary PCI for STEMI. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Zivkovic I, Milasinovic D, Dobras J, Zaharijev S, Mehmedbegovic Z, Pavlovic A, Radomirovic M, Stevanovic M, Matic D, Dedovic V, Ristic A, Seferovic P, Vukcevic V, Asanin M, Stankovic G. P3266Differential impact of impaired renal function and acute heart failure on short- and long-term mortality in patients undergoing primary PCI for STEMI. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zaharijev S, Milasinovic D, Dobras J, Mehmedbegovic Z, Pavlovic A, Zivkovic I, Radomirovic M, Stevanovic M, Stankovic S, Asanin M, Vukcevic V, Stankovic G. P5586Association of admission anemia and renal failure on short- and long-term outcomes in patients undergoing primary percutaneous coronary intervention. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Milasinovic D, Zaharijev S, Dobras J, Pavlovic A, Mehmedbegovic Z, Dedovic V, Radomirovic M, Stevanovic M, Stankovic S, Asanin M, Vukcevic V, Stankovic G. P2291Impact of chronic total occlusion in non-culprit coronary artery on short- and long-term mortality in STEMI patients treated with primary PCI. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mehmedbegovic Z, Milasinovic D, Zaharijev S, Dobras J, Stevanovic M, Radomirovic M, Pavlovic A, Zivkovic M, Dedovic V, Tesic M, Stankovic S, Vukcevic V, Asanin M, Stankovic G. P2746Can we identify with validated risk scores a low-to-intermediate risk patients that could benefit from early discharge after primary PCI? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mehmedbegovic Z, Milasinovic D, Zaharijev S, Dobras J, Radomirovic S, Stevanovic M, Zivkovic I, Pavlovic A, Dedovic V, Zivkovic M, Stankovic S, Vukcevic V, Asanin M, Stankovic G. P6076Impact of circumflex as a culprit artery on periprocedural and long-term clinical outcome in patients with acute myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Dobras J, Milasinovic D, Mehmedbegovic Z, Zaharijev S, Pavlovic A, Zivkovic I, Zivkovic M, Stankovic S, Stevanovic M, Asanin M, Vukcevic V, Stankovic G. P1401Impact of contrast-induced acute kidney injury on short and long-term mortality in patients with renal failure undergoing primary PCI for STEMI. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pavlovic A, Milasinovic D, Mehmedbegovic Z, Dobras J, Zaharijev S, Stevanovic M, Radomirovic M, Zivkovic I, Ristic A, Vukcevic V, Stankovic S, Asanin M, Stankovic G. P5124Impact of admission hyperglycemia on 3-year mortality in diabetic versus non-diabetic patients undergoing primary PCI for STEMI. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Stevanovic M, Gasic S, Pipal M, Blahova L, Brkic D, Neskovic N, Hilscherova K. Toxicity of clomazone and its formulations to zebrafish embryos (Danio rerio). Aquat Toxicol 2017; 188:54-63. [PMID: 28458150 DOI: 10.1016/j.aquatox.2017.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 12/14/2016] [Revised: 04/06/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
Herbicides are the most widely used group of pesticides but after reaching water bodies they are able to cause adverse effects on non-target organisms. Different formulations using the same active ingredient are frequently available, which raises the issue of potential influence of different formulation types on herbicide toxicity. The present study evaluated the toxicity and teratogenic effects of the active ingredient clomazone and its two formulations (Rampa® EC and GAT Cenit 36 CS, both containing 360g a.i./l of clomazone) on zebrafish embryos. The crucial difference between the two formulation types is the way of active substance release. This investigation is the first report on zebrafish embryotoxicity of both clomazone and its formulations. The technical active ingredient and formulations caused mortality and diverse teratogenic effects, showing different levels of toxicity. The LC50 values for the technical ingredient, Rampa® EC and GAT Cenit 36 CS were 61.4, 9.6 and 92.5mg a.i./l, respectively. Spontaneous movements in 22 hpf embryos decreased under exposure to both the technical ingredient and formulations. A significant number of underdeveloped embryos was detected after exposure to clomazone and Rampa® EC, while no underdevelopment was noted in embryos exposed to GAT Cenit 36 CS. Exposure to the technical ingredient and formulations led also to a series of morphological changes and interfered with the growth of zebrafish embryos. The EC50 based on detection of edemas, spine and tail tip deformations and gas bladder absence (120hpf) was 12.1, 10.1 and 24.1mg/l for technical clomazone, Rampa® EC and GAT Cenit 36 CS, while teratogenicity index (TI) based on LC50/EC50 ratio was 5.1, 1 and 3.8, respectively. The data in this study showed that the emulsifiable concentrate formulation (Rampa® EC) caused statistically significantly higher toxicity, and the aqueous capsule suspension (GAT Cenit 36 CS) lower toxicity than technical clomazone. It indicates that different formulations with the same active ingredient may have different environmental impacts, which is why risk assessment based only on active ingredient toxicity might not be sufficient in terms of preventing formulation effects on the environment.
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Affiliation(s)
- Marija Stevanovic
- Institute for Pesticides and Environmental Protection, Banatska 31b, 11000 Belgrade, Serbia
| | - Slavica Gasic
- Institute for Pesticides and Environmental Protection, Banatska 31b, 11000 Belgrade, Serbia
| | - Marek Pipal
- Research Center for Toxic Compounds in Environment, Kamenice 753/5, 62500 Brno, Czech Republic
| | - Lucie Blahova
- Research Center for Toxic Compounds in Environment, Kamenice 753/5, 62500 Brno, Czech Republic
| | - Dragica Brkic
- Institute for Pesticides and Environmental Protection, Banatska 31b, 11000 Belgrade, Serbia
| | - Nesko Neskovic
- Institute for Pesticides and Environmental Protection, Banatska 31b, 11000 Belgrade, Serbia
| | - Klara Hilscherova
- Research Center for Toxic Compounds in Environment, Kamenice 753/5, 62500 Brno, Czech Republic.
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Topalovic V, Schwirtlich M, Stevanovic M, Mojsin M. Histone modifications on the promoters of human OCT4 and NANOG genes at the onset of neural differentiation of NT2/D1 cells. Biochemistry Moscow 2017; 82:715-722. [DOI: 10.1134/s0006297917060086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Coceska E, Gjorgievska E, Coleman NJ, Gabric D, Slipper IJ, Stevanovic M, Nicholson JW. Enamel alteration following tooth bleaching and remineralization. J Microsc 2016; 262:232-44. [PMID: 27197087 DOI: 10.1111/jmi.12357] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 11/02/2015] [Indexed: 12/01/2022]
Abstract
The purpose of this study was to compare the effects of professional tooth whitening agents containing highly concentrated hydrogen peroxide (with and without laser activation), on the enamel surface; and the potential of four different toothpastes to remineralize any alterations. The study was performed on 50 human molars, divided in two groups: treated with Opalescence(®) Boost and Mirawhite(®) Laser Bleaching. Furthermore, each group was divided into five subgroups, a control one and 4 subgroups remineralized with: Mirasensitive(®) hap+, Mirawhite(®) Gelleѐ, GC Tooth Mousse™ and Mirafluor(®) C. The samples were analysed by SEM/3D-SEM-micrographs, SEM/EDX-qualitative analysis and SEM/EDX-semiquantitative analysis. The microphotographs show that both types of bleaching cause alterations: emphasized perikymata, erosions, loss of interprizmatic substance; the laser treatment is more aggressive and loss of integrity of the enamel is determined by shearing off the enamel rods. In all samples undergoing remineralization deposits were observed, those of toothpastes based on calcium phosphate technologies seem to merge with each other and cover almost the entire surface of the enamel. Loss of integrity and minerals were detected only in the line-scans of the sample remineralized with GC Tooth Mousse™. The semiquantitative EDX analysis of individual elements in the surface layer of the enamel indicates that during tooth-bleaching with HP statistically significant loss of Na and Mg occurs, whereas the bleaching in combination with a laser leads to statistically significant loss of Ca and P. The results undoubtedly confirm that teeth whitening procedures lead to enamel alterations. In this context, it must be noted that laser bleaching is more aggressive for dental substances. However, these changes are reversible and can be repaired by application of remineralization toothpastes.
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Affiliation(s)
- Emilija Coceska
- Department of Paediatric and Preventive Dentistry, Faculty of Dental Medicine, University 'Ss Cyril and Methodius' Skopje, Skopje, Republic of Macedonia
| | - Elizabeta Gjorgievska
- Department of Paediatric and Preventive Dentistry, Faculty of Dental Medicine, University 'Ss Cyril and Methodius' Skopje, Skopje, Republic of Macedonia
| | - Nichola J Coleman
- Faculty of Engineering and Science, University of Greenwich, Chatham, Kent, UK
| | - Dragana Gabric
- Faculty of Dentistry, University of Zagreb, Zagreb, Croatia
| | - Ian J Slipper
- Faculty of Engineering and Science, University of Greenwich, Chatham, Kent, UK
| | - Marija Stevanovic
- Department of Paediatric and Preventive Dentistry, Faculty of Dental Medicine, University 'Ss Cyril and Methodius' Skopje, Skopje, Republic of Macedonia
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Mojsin M, Topalovic V, Marjanovic Vicentic J, Stevanovic M. Transcription factor NF-Y inhibits cell growth and decreases SOX2 expression in human embryonal carcinoma cell line NT2/D1. Biochemistry (Mosc) 2015; 80:202-7. [PMID: 25756534 DOI: 10.1134/s0006297915020066] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Transcription factor NF-Y belongs to the embryonic stem cell transcription factor circuitry due to its role in the regulation of cell proliferation. We investigated the role of NF-Y in pluripotency maintenance using NT2/D1 cells as one of the best-characterized human embryonal carcinoma cell line. We investigated the efficiency of protein transduction and analyzed the effects of forced expression of short isoform of NF-Y A-subunit (NF-YAs) on NT2/D1 cell growth and expression of SOX2. We found that protein transduction is an efficient method for NF-Y overexpression in NT2/D1 cells. Next, we analyzed the effect of NF-YAs overexpression on NT2/D1 cell viability and detected significant reduction in cell growth. The negative effect of NF-YAs overexpression on NT2/D1 cell pluripotency maintenance was confirmed by the decrease in the level of the pluripotency marker SOX2. Finally, we checked the p53 status and determined that the NF-Y-induced inhibition of NT2/D1 cell growth is p53-independent.
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Affiliation(s)
- M Mojsin
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, 11010, Serbia.
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Klajn A, Drakulic D, Tosic M, Pavkovic Z, Schwirtlich M, Stevanovic M. SOX2 overexpression affects neural differentiation of human pluripotent NT2/D1 cells. Biochemistry (Mosc) 2015; 79:1172-82. [PMID: 25540002 DOI: 10.1134/s0006297914110042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
SOX2 is one of the key transcription factors involved in maintenance of neural progenitor identity. However, its function during the process of neural differentiation, including phases of lineage-specification and terminal differentiation, is still poorly understood. Considering growing evidence indicating that SOX2 expression level must be tightly controlled for proper neural development, the aim of this research was to analyze the effects of constitutive SOX2 overexpression on outcome of retinoic acid-induced neural differentiation of pluripotent NT2/D1 cells. We demonstrated that in spite of constitutive SOX2 overexpression, NT2/D1 cells were able to reach final phases of neural differentiation yielding both neuronal and glial cells. However, SOX2 overexpression reduced the number of mature MAP2-positive neurons while no difference in the number of GFAP-positive astrocytes was detected. In-depth analysis at single-cell level showed that SOX2 downregulation was in correlation with both neuronal and glial phenotype acquisitions. Interestingly, while in mature neurons SOX2 was completely downregulated, astrocytes with low level of SOX2 expression were detected. Nevertheless, cells with high level of SOX2 expression were incapable of entering in either of two differentiation pathways, neurogenesis or gliogenesis. Accordingly, our results indicate that fine balance between undifferentiated state and neural differentiation depends on SOX2 expression level. Unlike neurons, astrocytes could maintain low level of SOX2 expression after they acquired glial fate. Further studies are needed to determine whether differences in the level of SOX2 expression in GFAP-positive astrocytes are in correlation with their self-renewal capacity, differentiation status, and/or their phenotypic characteristics.
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Affiliation(s)
- A Klajn
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, 11010, Serbia.
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Stevanovic M, Dolovac N, Marisavljevic D, Andjelkovic A, Radivojevic L, Aleksic G, Gavrilovic V. EFFICACY OF METAMITRON IN APPLE THINNING IN SERBIA. Commun Agric Appl Biol Sci 2015; 80:261-266. [PMID: 27145590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The thinning of fruits is a required pomotechnical measure in intensive fruit production which ensures the production of good quality fruits and high yields. Metamitron, known as inhibitor of photosynthesis, has been successfully used in the thinning of apple fruits. This study had the aim to determine the efficacy of metamitron on the thinning of apple fruits in the agroecological conditions of Serbia and to evaluate the possibility of its practical application. Two varieties of apples that are widely grown in Serbia, dared and Golden Delicious, have been chosen for this research. The experiments were carried out during 2011 and 2012 according to the EPPO PP 1/158 (3) method. Metamitron has shown a good efficacy in the thinning of apple fruits. The effect of metamitron on the thinning of apple fruits depends on multiple factors, pri- marily the application dose, time of application, apple variety, but also on the number of fruits developed. The best efficacy on the Idared variety was in plots where metamitron was applied at a dose of 1.1 kg ha⁻¹, once (in the growth stage when the fruits were 8 mm in diameter) or twice (in the growth stages when the fruits were 8 mm and 12 mm in diameter), when the number of developed fruits per tree is smaller, or 1.65 kg ha⁻¹ applied once when the fruits are 12 mm in size when a larger number of fruits per tree is developed. On the Golden Delicious variety, the best efficacy was in treatments when metamitron was applied twice (in the growth stages when the fruits were 8 mm and 12 mm in diameter) in quantities of 1.1 kg ha⁻¹, when less fruits per tree were formed or 1.65 kg ha⁻¹, applied once or twice when a larger number of fruits per tree were formed.
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Petrovic I, Milivojevic M, Mojsin M, Drakulic D, Kovacevic Grujicic N, Topalovic V, Davidovic S, Stevanovic M. 499: The role of Hedgehog signaling pathway in the regulation of SOX18 gene expression in cervical carcinoma cell line. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50444-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Markovic R, Gardic V, Jugovic B, Stevanovic M. Dewatering of sludge obtained by neutralisation from sulfuric-acid waste solutions. ACTA ACUST UNITED AC 2014. [DOI: 10.5937/mmeb1404125m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Milivojevic M, Petrovic I, Kovacevic-Grujicic N, Popovic J, Mojsin M, Stevanovic M. Construction and functional analysis of novel dominant-negative mutant of human SOX18 protein. Biochemistry Moscow 2013; 78:1287-92. [DOI: 10.1134/s0006297913110096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Krastovska R, Stevanovic M. P4.019 Social Determinants That Improve Access to Prevention and Treatment of HIV and STI in Macedonia. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0917] [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: 11/03/2022]
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Schmidt-Arras D, Müller M, Stevanovic M, Horn S, Schütt A, Bergmann J, Wilkens R, Lickert A, Rose-John S. Oncogenic deletion mutants of gp130 signal from intracellular compartments. J Cell Sci 2013; 127:341-53. [DOI: 10.1242/jcs.130294] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Interleukin 6 and hence activation of the IL-6 receptor signalling subunit gp130 have been linked to inflammation and tumour formation. Recently, deletion mutations in gp130 have been identified in inflammatory hepatocellular adenoma. The mutations clustered around one IL-6 binding epitope and rendered gp130 constitutively active in a ligand-independent manner. Here we can show that gp130 deletion mutants, but not wildtype gp130 localise predominantly to intracellular compartments, notably the ER and early endosomes. One of the most frequent mutants gp130 Y186-Y190del (ΔYY) is retained in the ER quality control by its association with the chaperone calnexin. Furthermore, we can show that gp130 ΔYY induces downstream signalling from both, ER and endosomes and that both signals contribute to ligand-independent cell proliferation. We also demonstrate that endosomal localisation of gp130 ΔYY is crucial for full-fledged STAT3 activation. Therefore aberrant signalling from intracellular compartments might explain the tumourigenic potential of naturally occurring somatic mutations of gp130.
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Abstract
SOX2, a universal marker of pluripotent stem cells, is a transcription factor that helps control embryonic development in vertebrates; its expression persists in neural stem/progenitor cells into adulthood. Considering the critical role of the SOX2 transcription factor in the regulation of genes required for self-renewal and pluripotency of stem cells, we developed and characterized SOX2-overexpressing NT2/D1 cell clones. Using Southern blot and semi-quantitative RT-PCR, we confirmed integration and expression of exogenous SOX2 in three NT2/D1 cell clones. Overexpression of the SOX2 gene was detected in two of these clones. SOX2 overexpression in NT2/D1 cell clones resulted in altered expression of key pluripotency genes OCT4 and NANOG. Furthermore, SOX2-overexpressing NT2/D1 cell clones entered into retinoic acid-dependent neural differentiation, even when there was elevated SOX2 expression. After 21 days of induction by retinoic acid, expression of neural markers (neuroD1 and synaptophysin) was higher in induced cell clones than in induced parental cells. The cell clone with SOX2 overexpression had an approximately 1.3-fold higher growth rate compared to parental cells. SOX2 overexpression did not increase the population of cells undergoing apoptosis. Taken together, we developed two SOX2-overexpressing cell clones, with constitutive SOX2 expression after three weeks of retinoic acid treatment. SOX2 overexpression resulted in altered expression of pluripotency-related genes, increased proliferation, and altered expression of neural markers after three weeks of retinoic acid treatment.
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Affiliation(s)
- D Drakulic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
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Stevanovic M, Pavlovic V, Petkovic J, Filipic M, Uskokovic D. ROS-inducing potential, influence of different porogens and in vitro degradation of poly (D,L-lactide-co-glycolide)-based material. EXPRESS POLYM LETT 2011. [DOI: 10.3144/expresspolymlett.2011.97] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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29
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Stevanovic M, Mihajlovic S, Stojanovic I. P03-190 - Structure of clients of the group of neurotic stress associated and somatoform disorders treated in daily hospital 1998 and 2008. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)71244-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Podlesch I, Stevanovic M. Die Altersabhängigkeit der Diffusionskapazität der Lunge in Ruhe und während Belastung. Respiration 2009. [DOI: 10.1159/000192480] [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: 11/19/2022] Open
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Stevanovic M, Ignjatovic N, Jordovic B, Uskokovic D. Stereological analysis of the poly-(DL-lactide-co-glycolide) submicron sphere prepared by solvent/non-solvent chemical methods and centrifugal processing. J Mater Sci Mater Med 2007; 18:1339-44. [PMID: 17277970 DOI: 10.1007/s10856-007-0156-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Accepted: 03/29/2006] [Indexed: 05/13/2023]
Abstract
Fine particles made of poly(lactide-co-glycolide) (DLPLG) are excellent candidates for controlled release of delivering drugs and genes, because of their degradable nature. The preparation of DLPLG submicron spheres poses serious challenges that are not necessarily present when preparing macroparticles. In the present paper, DLPLG powder is produced with chemical method using solvent/non-solvent systems with subsequent centrifugation of the solution. The samples were characterized by infrared spectroscopy (IR), scanning electron microscopy (SEM) and stereological analysis. By changing the aging time with non-solvent and time and velocity of the centrifugal processing, it is possible to influence on the morphology and uniformity of the copolymer particles. Powder of the series with short aging time with non-solvent and longest time and velocity of the centrifugal processing has smallest particles and highest uniformity, where mean particles sizes were between 150 nm and 230 nm depending on which stereological parameters are considered (D(max), maximal diameters, feret X or feret Y).
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Affiliation(s)
- M Stevanovic
- Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade 11000, Serbia
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Abstract
Liveborn infants with tetraploidy are very rare in human pregnancies and usually die during the first days or months. Seven cases of liveborn infants with tetraploidy have previously been reported. Among them only two 92, XXXX infants survived for longer than 12 months. Here we report on the case of a 26-month-old girl with tetraploidy. The main clinical features of tetraploidy are facial dysmorphism, severely delayed growth and developmental delay. On the basis of molecular studies we discuss the possible origin of the additional chromosome sets in our proband. To our knowledge, this infant is the first reported case of tetraploidy who lived up to 26 months.
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Affiliation(s)
- M Guc-Scekic
- Laboratory of Medical Genetics, Mother and Child Health Institute, Dr Vukan Cupic, Belgrade, Yugoslavia.
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Abstract
The dominant elbow joint of 24 healthy volunteers was immobilized with a functional brace in increments of 20 degrees (6 positions ranging from 30 degrees to 130 degrees ). Average scores were obtained for personal care hygiene tasks (PCH), activity of daily living (ADL), and total functional scores (PCH + ADL) for each elbow flexion position. Functional scores increased with increasing elbow flexion, peaking at 110 degrees and then tapering down. Repeated-measures analysis of variance showed statistical significance, with functional scores improving with increasing elbow flexion for PCH, ADL, and PCH + ADL scores. Further pairwise comparisons for elbow position between 90 degrees and 110 degrees flexion groups demonstrated significant higher mean functional scores for ADL and combined PCH + ADL for the 110 degrees group. The results of this study support a clear advantage in subjects' upper-extremity functional abilities with the elbow immobilized at 110 degrees of flexion when dealing with normal upper-extremity joints. This angle of flexion should be considered in patients undergoing trial immobilization before an elbow arthrodesis.
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Affiliation(s)
- C Tang
- Department of Orthopaedics, Los Angeles County and University of Southern California Medical Center, University of Southern California, Los Angeles, CA 90033, USA
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Stevanovic M, Yovanovich M, Culham J. Modeling contact between rigid sphere and elastic layer bonded to rigid substrate. ACTA ACUST UNITED AC 2001. [DOI: 10.1109/6144.926384] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
SOX genes comprise a family of genes that are related to the mammalian sex determining gene SRY in the region that encodes the HMG-box domain responsible for the sequence-specific DNA-binding activity. SOX genes encode putative transcriptional regulators implicated in the decision of cell fates during development and the control of diverse developmental processes. We have cloned and characterised SOX14, a novel member of the human SOX gene family. Based on the HMG-box sequence, human SOX14 is a member of the B subfamily. SOX14 is expressed in human foetal brain, spinal cord and thymus, and like other members of the B subfamily, it might have a role in regulation of nervous system development. While other members of the B subfamily show similarity outside the HMG-box, the regions flanking the HMG box of the human SOX14 gene are unique. SOX14 has been mapped to human chromosome 3q22--> q23, close to the marker D3S1549. This location places SOX14 within a chromosome interval associated with two distinct syndromes that affect craniofacial development: Blepharophimosis-ptosis-epicantus inversus syndrome and Möbius syndrome.
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Affiliation(s)
- N Arsic
- Institute of Molecular Genetics and Genetic Engineering, Belgrade (Yugoslavia)
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Abstract
The treatment of soft tissue problems about the elbow should be directed toward early coverage and functional rehabilitation. The current study reviews some of the available treatment options, with emphasis on the treatment of large soft tissue defects. The role of prophylactic soft tissue coverage also is discussed. For large defects not extending more than 8 cm below the elbow and for prophylactic soft tissue coverage, the authors recommend the pedicled latissimus flap, which provides reliable coverage and a generous blood supply that promotes healing at the site of injury.
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Affiliation(s)
- M Stevanovic
- University of Southern California School of Medicine, Department of Orthopedics, Los Angeles 90089, USA
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Abstract
Sixteen consecutive patients who were treated with a pedicled latissimus dorsi flap for complex soft tissue defects about the elbow were reviewed. The average defect size was 100 cm2. Thirteen of the 16 patients achieved stable wound healing with a single procedure. Three patients had partial necrosis of the latissimus and required additional coverage procedures. We recommend that the latissimus dorsi flap should not be routinely used to cover defects more than 8 cm distal to the olecranon. The flap should be closely monitored in the first 48 hours, drains should be routinely used at the recipient and donor sites, and the elbow should be maintained in an extended position for the first 5 days after the procedure. The latissimus dorsi flap may also have a prophylactic role in selected patients with compromised soft tissue coverage about the elbow. The pedicled latissimus flap can be performed under loupe magnification and requires no microsurgical skills or equipment.
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Affiliation(s)
- M Stevanovic
- Department of Orthopedics, University of Southern California, Los Angeles County Medical Center, USA
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Abstract
Fifty patients were studied to determine the accuracy of the preoperative physical examination in flexor tendon Zone 5 wrist lacerations. Initially, a retrospective review of the charts of 33 patients who were examined by a second- or third-year postgraduate physician was done. An average of three errors per examination was found. Then a prospective study of 17 patients was performed to see if an examiner's level of training in hand surgery influenced the accuracy of the examination. Error rates improved slightly with experience. Ninety-seven examinations were performed in the combined prospective and retrospective studies, and only 13 were completely correct. Nearly 1/2 of all examinations had three or more errors. If a structure had been lacerated, the injury was not detected 33% of the time on the preoperative examination. The size and mechanism of injury of the skin laceration did not correlate with the number of structures that were cut.
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Affiliation(s)
- T W Gibson
- University of Southern California, School of Medicine, Los Angeles, USA
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Hsieh AS, Winet H, Bao JY, Stevanovic M. Model for intravital microscopic evaluation of the effects of arterial occlusion-caused ischemia in bone. Ann Biomed Eng 1999; 27:508-16. [PMID: 10468235 DOI: 10.1114/1.194] [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: 11/24/2022]
Abstract
An in vivo model has been developed for chronic observation of the effects of ischemia on cortical bone remodeling and perfused vascularity. Diaphragm occluders were implanted around the right common iliac artery of four rabbits and inflated to produce 10 h of ischemia to the limb. Microcirculation was monitored with intravital microscopy of injected fluorescent microspheres and FITC-Dextran 70 through a bone window, the tibial bone chamber implant (BCI). Bone resorption and apposition in the BCI were indicated with mineralization dyes. Between 2 and 12 h following release of the occluder, secondary ischemia/no-reflow and other evidence of reperfusion injury were observed. Vessel damage was suggested by abnormally high leakage of FITC-D70 from the few vessels perfused during secondary ischemia. In the weeks following occluder release perfused vasculature increased beyond pre-occlusion levels. Net bone resorption reached a maximum when vascularity passed normal levels. In order to further validate the arterial occlusion model for osteonecrosis, techniques for (1) confirming bone death and (2) detecting increased leukocyte adherence to endothelial cells were added. The dead cell stain Ethidium homodimer-1 was used to tag dead osteocytes immediately after occlusion and produced a measure designated "osteonecrosis index." To detect leukocytes adhering to vessel walls, carboxyfluorescein diacetate, succinimidyl ester was injected at occluder release. An increase in the number of adherent leukocytes was detected.
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Affiliation(s)
- A S Hsieh
- Department of Biomedical Engineering, University of Southern California, Los Angeles, USA
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Stevanovic M, Gutow AP, Sharpe F. The management of bone defects of the forearm after trauma. Hand Clin 1999; 15:299-318. [PMID: 10361640] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In summary, the authors believe that traumatic bone defects of the diaphyseal forearm, fewer than 6 cm in length, can be well managed with corticocancellous bone grafting, provided the patient has an adequate soft-tissue envelope. In cases of soft-tissue compromise, primary bone grafting is still the treatment of choice, combined with simultaneous soft-tissue coverage. This does not exclude the use of immediate primary shortening. Traumatic bone defects larger than 6 cm can best be managed with osteoseptocutaneous free fibular graft with excellent functional and cosmetic results. The creation of a one-bone forearm is rarely necessary, but remains a treatment option for an otherwise unsalvageable extremity. Osteo-articular defects can be more difficult to manage. Proximal osteo-articular defects of the radial head can be treated with excision or placement of a titanium radial head prosthesis. Distal osteo-articular defects may be better addressed in the case of radial bone loss by primary wrist fusion and, in the ulna, by a primary Darrach or Suave-Kapandji procedure.
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Affiliation(s)
- M Stevanovic
- Department of Orthopedics, University of Southern California School of Medicine, Los Angeles, USA
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Vaiman D, Schibler L, Oustry-Vaiman A, Pailhoux E, Goldammer T, Stevanovic M, Furet JP, Schwerin M, Cotinot C, Fellous M, Cribiu EP. High-resolution human/goat comparative map of the goat polled/intersex syndrome (PIS): the human homologue is contained in a human YAC from HSA3q23. Genomics 1999; 56:31-9. [PMID: 10036183 DOI: 10.1006/geno.1998.5691] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [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
The genetic and cytogenetic map around the chromosome 1 region shown to be linked with polledness and intersexuality (PIS) in the domestic goat (Capra hircus) was refined. For this purpose, a goat BAC library was systematically screened with primers from human coding sequences, scraped chromosome 1 DNA, bovine microsatellites from the region, and BAC ends. All the BACs (n = 30) were mapped by fluorescence in situ hybridization (FISH) on goat chromosome 1q41-q45. The genetic mapping of 30 new goat polymorphic markers, isolated from these BACs, made it possible to reduce the PIS interval to a region of less than 1 cM on goat chromosome 1q43. The PIS locus is now located between the two genes ATP1B and COP, which both map to 3q23 in humans. Genetic, cytogenetic, and comparative data suggest that the PIS region is now probably circumscribed to an approximately 1-Mb DNA segment for which construction of a BAC contig is in progress. In addition, a human YAC contig encompassing the blepharophimosis-ptosis-epicanthus-inversus region was mapped by FISH to goat chromosome 1q43. This human disease, mapped to HSA 3q23 and affecting the development and maintenance of ovarian function, could be a potential candidate for goat PIS.
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Affiliation(s)
- D Vaiman
- Departement de Génétique Animale, INRA, Jouy-en-Josas, 78352, France.
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Abstract
A case is presented of scaphocapitate fracture syndrome associated with a Salter-Harris type II fracture of the distal radius and ulna occurring in an 11-year-old girl. The proximal fragment of the fractured capitate was rotated 180 degrees. The injury was treated by open reduction and internal fixation. One year after the injury, radiographs showed that fractures were united with no signs of avascular necrosis of the capitate. The patient had a full range of motion of the wrist, as well as full pronation and supination of the forearm. An awareness of this fracture entity is necessary to correctly diagnose this injury in a child.
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Affiliation(s)
- K Mazur
- Department of Orthopaedic Surgery, Los Angeles County/University of Southern California Medical Center, USA
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Affiliation(s)
- M Stevanovic
- Department of Orthopaedics, Los Angeles County and University of Southern California School of Medicine, 90033, USA
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Abstract
We investigated 14 patients with pyogenic flexor tenosynovitis for increased tissue pressures in involved digits. All showed raised pressures, in eight to 30 mmHg or more. These levels are consistent with a compartment syndrome. We describe the results of a modified operative technique which includes irrigation of the sheath and the leaving open of a lateral incision. This also allows early active mobilisation of the finger and has given satisfactory early results.
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Affiliation(s)
- S. B. Schnall
- Department of Orthopaedics, Los Angeles County and University of Southern California Medical Center, 2025 Zonal Avenue, GNH 3900, Los Angeles, California 90033, USA
| | - T. Vu-Rose
- Department of Orthopaedics, Los Angeles County and University of Southern California Medical Center, 2025 Zonal Avenue, GNH 3900, Los Angeles, California 90033, USA
| | - P. D. Holtom
- Department of Orthopaedics, Los Angeles County and University of Southern California Medical Center, 2025 Zonal Avenue, GNH 3900, Los Angeles, California 90033, USA
| | - B. Doyle
- Department of Orthopaedics, Los Angeles County and University of Southern California Medical Center, 2025 Zonal Avenue, GNH 3900, Los Angeles, California 90033, USA
| | - M. Stevanovic
- Department of Orthopaedics, Los Angeles County and University of Southern California Medical Center, 2025 Zonal Avenue, GNH 3900, Los Angeles, California 90033, USA
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Schnall SB, Vu-Rose T, Holtom PD, Doyle B, Stevanovic M. Tissue pressures in pyogenic flexor tenosynovitis of the finger. Compartment syndrome and its management. J Bone Joint Surg Br 1996; 78:793-5. [PMID: 8836073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We investigated 14 patients with pyogenic flexor tenosynovitis for increased tissue pressures in involved digits. All showed raised pressures, in eight to 30 mmHg or more. These levels are consistent with a compartment syndrome. We describe the results of a modified operative technique which includes irrigation of the sheath and the leaving open of a lateral incision. This also allows early active mobilisation of the finger and has given satisfactory early results.
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Affiliation(s)
- S B Schnall
- University of Southern California, Los Angeles, USA
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Collignon J, Sockanathan S, Hacker A, Cohen-Tannoudji M, Norris D, Rastan S, Stevanovic M, Goodfellow PN, Lovell-Badge R. A comparison of the properties of Sox-3 with Sry and two related genes, Sox-1 and Sox-2. Development 1996; 122:509-20. [PMID: 8625802 DOI: 10.1242/dev.122.2.509] [Citation(s) in RCA: 337] [Impact Index Per Article: 12.0] [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: 11/20/2022]
Abstract
The Sox gene family consists of a large number of embryonically expressed genes related via the possession of a 79-amino-acid DNA-binding domain known as the HMG box. Partial clones for the first three Sox genes (al-a3) were isolated by homology to the HMG box of the testis-determining gene Sry and are now termed Sox-1, Sox-2 and Sox-3, Sox-3 is highly conserved amongst mammalian species and is located on the X chromosome. This has led to the proposal that Sry evolved from Sox-3. We present the cloning and sequencing of Sox-1, Sox-2 and Sox-3 from the mouse and show that Sox-3 is most closely relate to Sry. We also confirm that mouse Sox-3 is located on the X chromosome between Hprt and Dmd. Analysis of the distribution of Sox-3 RNA shows that its main site of expression is in the developing central nervous system, suggesting a role for Sox-3 in neural development. Moreover, we demonstrate that Sox-3, as well as Sox-1 and Sox-2, are expressed in the urogenital ridge and that their protein products are able to bind the same DNA sequence motif as Sry in vitro, but with different affinities. These observations prompt discussion of an evolutionary link between the genes and support the model that Sry has evolved from Sox-3. However our findings imply that if this is true, then Sry has undergone concomitant changes resulting in loss of CNS expression and altered DNA-binding properties.
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Affiliation(s)
- J Collignon
- Laboratory of Developmental Genetics, MRC National Institute for Medical Research, London, UK
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Schafer AJ, Dominguez-Steglich MA, Guioli S, Kwok C, Weller PA, Stevanovic M, Weissenbach J, Mansour S, Young ID, Goodfellow PN. The role of SOX9 in autosomal sex reversal and campomelic dysplasia. Philos Trans R Soc Lond B Biol Sci 1995; 350:271-7; discussion 277-8. [PMID: 8570691 DOI: 10.1098/rstb.1995.0161] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [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: 01/31/2023] Open
Abstract
In eutherian mammals, the Y-chromosome gene SRY is required for induction of testis development. Although the Y chromosome is sex determining, loci located elsewhere in the genome participate in the complex cascade of genetic interactions required to form a testis. Male to female sex reversal (46,XY females) occurs at a high frequency in individuals afflicted with the skeletal malformation syndrome campomelic dysplasia. Chromosomal translocations in individuals with both syndromes had localized an autosomal sex reversal locus (SRA1) and a campomelic dysplasia locus (CMPD1) to the long arm of human chromosome 17. The molecular cloning of a translocation breakpoint in a sex reversed campomelic dysplasia patient revealed its proximity to SOX9, a gene which is related to SRY. Analysis of SO X9 in patients without chromosomal rearrangements demonstrated single allele mutations in sex reversed campomelic individuals, linking this gene with both bone formation and control of testis development. Identification of SO X9 as SRA1/CMPD1 and the role of SO X9 mutations in sex reversal and campomelic dysplasia are discussed.
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Affiliation(s)
- A J Schafer
- Department of Genetics, University of Cambridge, U.K
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Stevanovic M, Wodicka GR, Bourland JD, Graber GP, Foster KS, Lantz GC, Tacker WA, Cymerman A. The effect of elevated intracranial pressure on the vibrational response of the ovine head. Ann Biomed Eng 1995; 23:720-7. [PMID: 8572422 DOI: 10.1007/bf02584471] [Citation(s) in RCA: 10] [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]
Abstract
Although potentially fatal increases in intracranial pressure (ICP) can occur in a number of pathological conditions, there is no reliable and noninvasive procedure to detect ICP elevation and quantitatively monitor changes over time. In this experimental study, the relationships between ICP elevation and the vibrational response of the head were determined. An ovine animal model was employed in which incremental increases in ICP were elicited and directly measured through intraventricular cannulae. At each ICP increment, a vibration source elicited a flexural response of the animal's head that was measured at four locations on the skull using accelerometers. Spectral analysis of the responses showed changes in proportion to ICP change up to roughly 20 cm H2O (15 mm Hg) above normal; a clinically significant range. Both magnitude and phase changes at frequencies between 4 and 7 kHz correlated well (gamma > 0.92) with ICP across the study group. These findings suggest that the vibrational response of the head can be used to monitor changes in ICP noninvasively.
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Affiliation(s)
- M Stevanovic
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907-1285, USA
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