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Link K, Shved N, Serrano N, Akgül G, Caelers A, Faass O, Mouttet F, Raabe O, D’Cotta H, Baroiller JF, Eppler E. Effects of seawater and freshwater challenges on the Gh/Igf system in the saline-tolerant blackchin tilapia (Sarotherodon melanotheron). Front Endocrinol (Lausanne) 2022; 13:976488. [PMID: 36313755 PMCID: PMC9596810 DOI: 10.3389/fendo.2022.976488] [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: 06/23/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Prolactin (Prl) and growth hormone (Gh) as well as insulin-like growth factor 1 (Igf1) are involved in the physiological adaptation of fish to varying salinities. The Igfs have been also ascribed other physiological roles during development, growth, reproduction and immune regulation. However, the main emphasis in the investigation of osmoregulatory responses has been the endocrine, liver-derived Igf1 route and local regulation within the liver and osmoregulatory organs. Few studies have focused on the impact of salinity alterations on the Gh/Igf-system within the neuroendocrine and immune systems and particularly in a salinity-tolerant species, such as the blackchin tilapia Sarotherodon melanotheron. This species is tolerant to hypersalinity and saline variations, but it is confronted by severe climate changes in the Saloum inverse estuary. Here we investigated bidirectional effects of increased salinity followed by its decrease on the gene regulation of prl, gh, igf1, igf2, Gh receptor and the tumor-necrosis factor a. A mixed population of sexually mature 14-month old blackchin tilapia adapted to freshwater were first exposed to seawater for one week and then to fresh water for another week. Brain, pituitary, head kidney and spleen were excised at 4 h, 1, 2, 3 and 7 days after both exposures and revealed differential expression patterns. This investigation should give us a better understanding of the role of the Gh/Igf system within the neuroendocrine and immune organs and the impact of bidirectional saline challenges on fish osmoregulation in non-osmoregulatory organs, notably the complex orchestration of growth factors and cytokines.
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Affiliation(s)
- Karl Link
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
- Institute of Evolutionary Medicine IEM, University of Zürich, Zürich, Switzerland
| | - Natallia Shved
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
- Institute of Evolutionary Medicine IEM, University of Zürich, Zürich, Switzerland
| | - Nabil Serrano
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
- Institute of Evolutionary Medicine IEM, University of Zürich, Zürich, Switzerland
| | - Gülfirde Akgül
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
- Institute of Evolutionary Medicine IEM, University of Zürich, Zürich, Switzerland
| | - Antje Caelers
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
| | - Oliver Faass
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
| | | | - Oksana Raabe
- Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Helena D’Cotta
- Institut des Sciences de l’Evolution de Montpellier (ISEM), Université Montpellier, Institut de Recherche pour le Développement (the French National Research Institute for Sustainable Development) (IRD), Ecole Pratique des Hautes Etudes (Practical School of Advanced Studies) (EPHE), Centre National de la Recherche Scientifique (French National Centre for Scientific Research) (CNRS), Unité Mixte de Recherche (Mixed Research Unit) (UMR) 5554, Montpellier, France
- UMR116-Institut des Sciences de l’Evolution de Montpellier, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Montpellier, France
| | - Jean-François Baroiller
- Institut des Sciences de l’Evolution de Montpellier (ISEM), Université Montpellier, Institut de Recherche pour le Développement (the French National Research Institute for Sustainable Development) (IRD), Ecole Pratique des Hautes Etudes (Practical School of Advanced Studies) (EPHE), Centre National de la Recherche Scientifique (French National Centre for Scientific Research) (CNRS), Unité Mixte de Recherche (Mixed Research Unit) (UMR) 5554, Montpellier, France
- UMR116-Institut des Sciences de l’Evolution de Montpellier, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Montpellier, France
| | - Elisabeth Eppler
- Institute of Anatomy, University of Zurich, Zürich, Switzerland
- Institute of Evolutionary Medicine IEM, University of Zürich, Zürich, Switzerland
- Institute of Anatomy, University of Bern, Bern, Switzerland
- *Correspondence: Elisabeth Eppler,
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Bouwman A, Shved N, Akgül G, Rühli F, Warinner C. Ancient DNA Investigation of a Medieval German Cemetery Confi rms Long-Term Stability of CCR5-Δ32 Allele Frequencies in Central Europe. Hum Biol 2022. [DOI: 10.1353/hub.2017.0007] [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: 11/11/2022]
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Morozova I, Öhrström LM, Eppenberger P, Bode-Lesniewska B, Gascho D, Haas C, Akgül G, Neukamm J, Röthlin KA, Imhof A, Shved N, Papageorgopoulou C, Rühli FJ. Ongoing tissue changes in an experimentally mummified human leg. Anat Rec (Hoboken) 2019; 303:3085-3095. [PMID: 31837087 DOI: 10.1002/ar.24333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/23/2019] [Accepted: 10/23/2019] [Indexed: 11/11/2022]
Abstract
Artificial mummification has been used since antiquity and is best known from ancient Egypt. Despite ancient Egyptian mummies being studied for several decades, the mummification techniques of that time are not well understood. Modern mummification experiments involving animal and human tissues have contributed additional insights relevant to a broad field of research. In the current study, we present follow-up results of an experiment on artificial mummification, which began in 2009. A human leg was artificially mummified and monitored for almost a year with histological, molecular, and radiological techniques. Since then, it has remained in a dry, natron salt blend for 9 years. The current analyses show further progression of dehydration and tissue alterations, as well as DNA degradation, suggesting an ongoing process. Our results add new insights into the mechanisms of tissue mummification. Taking into account that the process is still ongoing, further research is required, including a re-evaluation of the human leg in the future.
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Affiliation(s)
- Irina Morozova
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Lena M Öhrström
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Patrick Eppenberger
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Beata Bode-Lesniewska
- Institute of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Dominic Gascho
- Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Cordula Haas
- Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Gülfirde Akgül
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Judith Neukamm
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland.,Institute for Archaeological Sciences, University of Tübingen, Tübingen, Germany.,Center for Bioinformatics Tübingen, University of Tübingen, Tübingen, Germany
| | - Kim A Röthlin
- Institute of Medical Microbiology, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Alexander Imhof
- SRO AG, Spital Langenthal, Department of Internal Medicine, Langenthal, Switzerland
| | - Natallia Shved
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Christina Papageorgopoulou
- Laboratory of Physical Anthropology, Department of History and Ethnology, Democritus University of Thrace, Komotini, Greece
| | - Frank J Rühli
- Institute of Evolutionary Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
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Papageorgopoulou C, Shved N, Wanek J, Rühli FJ. Modeling Ancient Egyptian Mummification on Fresh Human Tissue: Macroscopic and Histological Aspects. Anat Rec (Hoboken) 2015; 298:974-87. [DOI: 10.1002/ar.23134] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 01/30/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Christina Papageorgopoulou
- Department of History and Ethnology; Laboratory of Anthropology; Demokritus University of Thrace; Komotini Greece
| | - Natallia Shved
- Swiss Mummy Project, Centre for Evolutionary Medicine, Institute of Anatomy; University of Zurich; Zürich Switzerland
| | - Johann Wanek
- Swiss Mummy Project, Centre for Evolutionary Medicine, Institute of Anatomy; University of Zurich; Zürich Switzerland
| | - Frank J. Rühli
- Swiss Mummy Project, Centre for Evolutionary Medicine, Institute of Anatomy; University of Zurich; Zürich Switzerland
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Shved N, Haas C, Papageorgopoulou C, Akguel G, Paulsen K, Bouwman A, Warinner C, Rühli F. Post mortem DNA degradation of human tissue experimentally mummified in salt. PLoS One 2014; 9:e110753. [PMID: 25337822 PMCID: PMC4206501 DOI: 10.1371/journal.pone.0110753] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 09/22/2014] [Indexed: 12/27/2022] Open
Abstract
Mummified human tissues are of great interest in forensics and biomolecular archaeology. The aim of this study was to analyse post mortem DNA alterations in soft tissues in order to improve our knowledge of the patterns of DNA degradation that occur during salt mummification. In this study, the lower limb of a female human donor was amputated within 24 h post mortem and mummified using a process designed to simulate the salt dehydration phase of natural or artificial mummification. Skin and skeletal muscle were sampled at multiple time points over a period of 322 days and subjected to genetic analysis. Patterns of genomic fragmentation, miscoding lesions, and overall DNA degradation in both nuclear and mitochondrial DNA was assessed by different methods: gel electrophoresis, multiplex comparative autosomal STR length amplification, cloning and sequence analysis, and PCR amplification of different fragment sizes using a damage sensitive recombinant polymerase. The study outcome reveals a very good level of DNA preservation in salt mummified tissues over the course of the experiment, with an overall slower rate of DNA fragmentation in skin compared to muscle.
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Affiliation(s)
- Natallia Shved
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
- * E-mail:
| | - Cordula Haas
- Department of Forensic Genetics, Institute of Legal Medicine, University of Zürich, Zürich, Switzerland
| | | | - Guelfirde Akguel
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
| | - Katja Paulsen
- Division of Cell- and Neurobiology, Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Abigail Bouwman
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
| | - Christina Warinner
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
| | - Frank Rühli
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
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Wenger M, Shved N, Akgül G, Caelers A, Casanova A, Segner H, Eppler E. Developmental oestrogen exposure differentially modulates IGF-I and TNF-α expression levels in immune organs of Yersinia ruckeri-challenged young adult rainbow trout (Oncorhynchus mykiss). Gen Comp Endocrinol 2014; 205:168-75. [PMID: 24874061 DOI: 10.1016/j.ygcen.2014.05.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 05/12/2014] [Accepted: 05/17/2014] [Indexed: 01/24/2023]
Abstract
Intensified aquaculture has strong impact on fish health by stress and infectious diseases and has stimulated the interest in the orchestration of cytokines and growth factors, particularly their influence by environmental factors, however, only scarce data are available on the GH/IGF-system, central physiological system for development and tissue shaping. Most recently, the capability of the host to cope with tissue damage has been postulated as critical for survival. Thus, the present study assessed the combined impacts of estrogens and bacterial infection on the insulin-like growth factors (IGF) and tumor-necrosis factor (TNF)-α. Juvenile rainbow trout were exposed to 2 different concentrations of 17β-estradiol (E2) and infected with Yersinia ruckeri. Gene expressions of IGF-I, IGF-II and TNF-α were measured in liver, head kidney and spleen and all 4 estrogen receptors (ERα1, ERα2, ERβ1 and ERβ2) known in rainbow trout were measured in liver. After 5 weeks of E2 treatment, hepatic up-regulation of ERα1 and ERα2, but down-regulation of ERß1 and ERß2 were observed in those groups receiving E2-enriched food. In liver, the results further indicate a suppressive effect of Yersinia-infection regardless of E2-treatment on day 3, but not of E2-treatment on IGF-I whilst TNF-α gene expression was not influenced by Yersinia-infection but was reduced after 5 weeks of E2-treatment. In spleen, the results show a stimulatory effect of Yersinia-infection, but not of E2-treatment on both, IGF-I and TNF-α gene expressions. In head kidney, E2 strongly suppressed both, IGF-I and TNF-α. To summarise, the treatment effects were tissue- and treatment-specific and point to a relevant role of IGF-I in infection.
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Affiliation(s)
- Michael Wenger
- Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zurich, Zurich, Switzerland; Centre for Fish and Wildlife Health, Institute of Animal Pathology, University of Bern, Bern, Switzerland
| | - Natallia Shved
- Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zurich, Zurich, Switzerland; Centre for Evolutionary Medicine (ZEM), Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Gülfirde Akgül
- Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zurich, Zurich, Switzerland; Centre for Evolutionary Medicine (ZEM), Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Antje Caelers
- Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Ayako Casanova
- Centre for Fish and Wildlife Health, Institute of Animal Pathology, University of Bern, Bern, Switzerland
| | - Helmut Segner
- Centre for Fish and Wildlife Health, Institute of Animal Pathology, University of Bern, Bern, Switzerland; Centre for Xenobiotic Risk Research (XERR), Zurich, Switzerland
| | - Elisabeth Eppler
- Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zurich, Zurich, Switzerland; Centre for Xenobiotic Risk Research (XERR), Zurich, Switzerland; Institute of Neuroradiology, University Hospital, Otto-von-Guericke University, Magdeburg, Germany.
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Warinner C, Rodrigues JFM, Vyas R, Trachsel C, Shved N, Grossmann J, Radini A, Hancock Y, Tito RY, Fiddyment S, Speller C, Hendy J, Charlton S, Luder HU, Salazar-García DC, Eppler E, Seiler R, Hansen LH, Castruita JAS, Barkow-Oesterreicher S, Teoh KY, Kelstrup CD, Olsen JV, Nanni P, Kawai T, Willerslev E, von Mering C, Lewis CM, Collins MJ, Gilbert MTP, Rühli F, Cappellini E. Pathogens and host immunity in the ancient human oral cavity. Nat Genet 2014; 46:336-44. [PMID: 24562188 PMCID: PMC3969750 DOI: 10.1038/ng.2906] [Citation(s) in RCA: 304] [Impact Index Per Article: 30.4] [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: 05/31/2013] [Accepted: 02/03/2014] [Indexed: 01/19/2023]
Abstract
Calcified dental plaque (dental calculus) preserves for millennia and entraps biomolecules from all domains of life and viruses. We report the first, to our knowledge, high-resolution taxonomic and protein functional characterization of the ancient oral microbiome and demonstrate that the oral cavity has long served as a reservoir for bacteria implicated in both local and systemic disease. We characterize (i) the ancient oral microbiome in a diseased state, (ii) 40 opportunistic pathogens, (iii) ancient human-associated putative antibiotic resistance genes, (iv) a genome reconstruction of the periodontal pathogen Tannerella forsythia, (v) 239 bacterial and 43 human proteins, allowing confirmation of a long-term association between host immune factors, 'red complex' pathogens and periodontal disease, and (vi) DNA sequences matching dietary sources. Directly datable and nearly ubiquitous, dental calculus permits the simultaneous investigation of pathogen activity, host immunity and diet, thereby extending direct investigation of common diseases into the human evolutionary past.
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Affiliation(s)
- Christina Warinner
- 1] Centre for Evolutionary Medicine, Institute of Anatomy, University of Zürich, Zürich, Switzerland. [2] Department of Anthropology, University of Oklahoma, Norman, Oklahoma, USA
| | - João F Matias Rodrigues
- 1] Institute of Molecular Life Sciences, University of Zürich, Zürich, Switzerland. [2] Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Rounak Vyas
- 1] Institute of Molecular Life Sciences, University of Zürich, Zürich, Switzerland. [2] Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Christian Trachsel
- Functional Genomics Center Zürich, University of Zürich/Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Natallia Shved
- Centre for Evolutionary Medicine, Institute of Anatomy, University of Zürich, Zürich, Switzerland
| | - Jonas Grossmann
- Functional Genomics Center Zürich, University of Zürich/Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Anita Radini
- 1] BioArCh, Department of Archaeology, University of York, York, UK. [2] University of Leicester Archaeological Services (ULAS), School of Archaeology and Ancient History, University of Leicester, Leicester, UK
| | - Y Hancock
- Department of Physics, University of York, York, UK
| | - Raul Y Tito
- Department of Anthropology, University of Oklahoma, Norman, Oklahoma, USA
| | - Sarah Fiddyment
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Camilla Speller
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Jessica Hendy
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Sophy Charlton
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Hans Ulrich Luder
- Centre of Dental Medicine, Institute of Oral Biology, University of Zürich, Zürich, Switzerland
| | - Domingo C Salazar-García
- 1] Research Group on Plant Foods in Hominin Dietary Ecology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. [2] Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. [3] Department of Prehistory and Archaeology, University of Valencia, Valencia, Spain
| | - Elisabeth Eppler
- 1] Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zürich, Zürich, Switzerland. [2] Zürich Center for Integrative Human Physiology, University of Zürich, Zürich, Switzerland
| | - Roger Seiler
- Centre for Evolutionary Medicine, Institute of Anatomy, University of Zürich, Zürich, Switzerland
| | - Lars H Hansen
- 1] Department of Biology, Microbiology, University of Copenhagen, Copenhagen, Denmark. [2] Department of Environmental Science, Aarhus Universitet, Roskilde, Denmark
| | | | - Simon Barkow-Oesterreicher
- Functional Genomics Center Zürich, University of Zürich/Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Kai Yik Teoh
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Christian D Kelstrup
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jesper V Olsen
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Paolo Nanni
- Functional Genomics Center Zürich, University of Zürich/Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Toshihisa Kawai
- 1] Department of Immunology and Infectious Diseases, Forsyth Institute, Cambridge, Massachusetts, USA. [2] Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts, USA
| | - Eske Willerslev
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Christian von Mering
- 1] Institute of Molecular Life Sciences, University of Zürich, Zürich, Switzerland. [2] Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Cecil M Lewis
- Department of Anthropology, University of Oklahoma, Norman, Oklahoma, USA
| | | | - M Thomas P Gilbert
- 1] Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark. [2] Ancient DNA Laboratory, Murdoch University, Perth, Western Australia, Australia
| | - Frank Rühli
- 1] Centre for Evolutionary Medicine, Institute of Anatomy, University of Zürich, Zürich, Switzerland. [2]
| | - Enrico Cappellini
- 1] Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark. [2]
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Panzer S, Borumandi F, Wanek J, Papageorgopoulou C, Shved N, Colacicco G, Rühli FJ. "Modeling ancient Egyptian embalming": radiological assessment of experimentally mummified human tissue by CT and MRI. Skeletal Radiol 2013; 42:1527-35. [PMID: 23925562 DOI: 10.1007/s00256-013-1696-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 06/29/2013] [Accepted: 07/15/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To assess changes in different tissues during the process of artificial mummification by natron using computed tomography (CT) and magnetic resonance imaging (MRI), and to translate the results to image interpretation in paleoradiological studies of ancient mummies. MATERIALS AND METHODS A human lower limb (LL) was amputated from a female donor 24 h post-mortem and mummified by artificial natron (54 % NaCl, 16 % Na2SO4, 18 % Na2CO3 12 % NaHCO3) in ancient Egyptian style. The LL was kept in a fume hood at 16-25 °C and 30-75 % relative humidity. CT and MRI were performed at specific intervals with quantitative evaluation of Hounsfield units (HU) and signal intensities (SI). RESULTS Evaluated tissues showed different HU and SI changes during the experimental mummification. All tissues revealed an overall but varying increase of HU in CT examinations. All tissues except for the compact bone revealed an overall but varying decrease of SI in the IR and T2-weighted sequences of the MRI. Typical findings included a distinct increase of HU in the cutis at the end of the study and a temporary increase of SI in the IR and T2-weighted sequences in all muscle groups. CONCLUSIONS Radiological findings showed a regular, controlled and effective dehydration by the applied natron without detectable putrefaction. Evaluated tissues revealed different radiological changes during the experiment, which altogether led to preservation of the tissues without radiologically identifiable destruction. The cutis revealed radiological signs of direct interaction with the natron in the form of covering and possibly permeation.
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Affiliation(s)
- Stephanie Panzer
- Department of Radiology, Trauma Center Murnau, Prof.-Küntscher-Strasse 8, 82418, Murnau, Germany,
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Haas C, Shved N, Rühli FJ, Papageorgopoulou C, Purps J, Geppert M, Willuweit S, Roewer L, Krawczak M. Y-chromosomal analysis identifies the skeletal remains of Swiss national hero Jörg Jenatsch (1596-1639). Forensic Sci Int Genet 2013; 7:610-617. [PMID: 24035510 DOI: 10.1016/j.fsigen.2013.08.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 08/13/2013] [Accepted: 08/14/2013] [Indexed: 10/26/2022]
Abstract
Jörg Jenatsch was a Swiss defender of independence and a fighter for liberty in the 17th century. With the help of three living male members of the Jenatsch family, we successfully identified a skeleton exhumed from Chur cathedral as the remains of Jörg Jenatsch. Our conclusion was based upon complete Y-STR and Y-SNP profiles that could be generated by replicate analyses of a bone sample available to us. The skeleton and the three living family members carried the same Y-SNP haplogroup, but were discordant at three of 23 Y-STR loci. This notwithstanding, conservative biostatistical evaluation of the data suggests that the Chur skeleton is at least 20 times more likely than not to be Jörg Jenatsch.
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Affiliation(s)
- Cordula Haas
- Institute of Legal Medicine, University of Zurich, Switzerland.
| | - Natallia Shved
- Centre for Evolutionary Medicine, Institute of Anatomy, University of Zurich, Switzerland
| | - Frank Jakobus Rühli
- Centre for Evolutionary Medicine, Institute of Anatomy, University of Zurich, Switzerland
| | - Christina Papageorgopoulou
- Laboratory of Anthropology, Department of History and Ethnology, Demokritus University of Thrace, Greece
| | - Josephine Purps
- Department of Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin, Berlin, Germany
| | - Maria Geppert
- Department of Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin, Berlin, Germany
| | - Sascha Willuweit
- Department of Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin, Berlin, Germany
| | - Lutz Roewer
- Department of Forensic Genetics, Institute of Legal Medicine and Forensic Sciences, Charité-Universitätsmedizin, Berlin, Germany
| | - Michael Krawczak
- Institute of Medical Informatics and Statistics, Christian-Albrechts University of Kiel, Germany
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Lai CF, Lin SL, Chiang WC, Chen YM, Kuo ML, Tsai TJ, Hwang HS, Choi YA, Park KC, Yang KJ, Choi HS, Kim SH, Lee SJ, Chang YK, Kim SY, Yang CW, Xiujuan Z, Yoshimura R, Matsuyama M, Chargui J, Touraine JL, Yoshimura N, Zulkarnaev AB, Vasilenko IA, Artemov DV, Vatazin AV, Park SK, Kang KP, Lee S, Kim W, Schneider R, Betz B, Moller-Ehrlich K, Wanner C, Sauvant C, Yang KJ, Park KC, Choi HS, Kim SH, Choi YA, Chang YK, Park CW, Kim SY, Lee SJ, Yang CW, Hwang HS, Sohotnik R, Nativ O, Abbasi A, Awad H, Frajewicki V, Armaly Z, Heyman SN, Nativ O, Abassi Z, Chen PY, Chen BL, Yang CC, Chiang CK, Liu SH, Abozahra AE, Abd-Elkhabir AA, Shokeir A, Hussein A, Awadalla A, Barakat N, Abdelaziz A, Yamaguchi J, Tanaka T, Eto N, Nangaku M, Quiros Y, Lopez-Hernandez FJ, Perez de Obanos MP, Ruiz J, Lopez-Novoa JM, Shin HS, Kim MJ, Choi YJ, Ryu ES, Choi HS, Kang DH, Jankauskas SS, Pevzner IB, Zorova LD, Babenko VA, Morosanova MA, Plotnikov EY, Zorov DB, Huang CY, Huang TM, Wu VC, Young GH, Plotnikov EY, Pevzner IB, Zorova LD, Chupyrkina AA, Zorov SD, Zorov DB, Grande JP, Hartono SP, Knudsen BE, Mederle K, Castrop H, Hocherl K, Iwakura T, Fujikura T, Ohashi N, Yasuda H, Fujigaki Y, Matsui I, Hamano T, Inoue K, Obi Y, Nakano C, Kusunoki Y, Tsubakihara Y, Rakugi H, Isaka Y, Shimomura A, Wallentin Guron C, Nguy L, Lundgren J, Grimberg E, Kashioulis P, Guron G, Guron G, DiBona GF, Nguy L, Grimberg E, Lundgren J, Nedergaard Mikkelsen M, Marcussen N, Saeed A, Edvardsson K, Lindberg K, Larsson T, Ito K, Nakashima H, Watanabe M, Abe Y, Ogahara S, Saito T, Albertoni G, Borges F, Schor N, Beresneva ON, Parastayeva MM, Kucher AG, Ivanova GT, Shved N, Rybakova MG, Kayukov IG, Smirnov AV, Chen JF, Ni HF, Pan MM, Liu H, Xu M, Zhang MH, Liu BC, Kim Y, Choi BS, Kim YS, Han JS, Reis LA, Christo JS, Simoes MDJ, Schor N, Mulay SR, Santhosh Kumar VR, Kulkarni OP, Darisipudi M, Lech M, Anders HJ, Zorov DB, Plotnikov EY, Silachev DN, Jankauskas SS, Pevzner IB, Zorova LD, Zorov SD, Morosanova MA, Sola A, Jung M, Ventayol M, Mastora C, Buenestado S, Hotter G, Rong S, Shushakova N, Wensvoort G, Haller H, Gueler F, Pan MM, Zhang MH, Ni HF, Chen JF, Xu M, Liu BC, Morais C, Vesey DA, Johnson DW, Gobe GC, Godo M, Kaucsar T, Revesz C, Hamar P, Cheng Q, Wen J, Ma Q, Zhao J, Castellano G, Stasi A, Di Palma AM, Gigante M, Netti GS, Curci C, Intini A, Divella C, Prattichizzo C, Fiaccadori E, Pertosa G, Grandaliano G, Gesualdo L, Wei QW, Jing QQ, Ying NJ, Dong QZ, Yong G, Choi YJ, Kim MJ, Shin HS, Ryu ES, Choi HS, Kang DH, Pevzner IB, Pulkova NV, Plotnikov EY, Zorova LD, Silachev DN, Morosanova MA, Sukhikh GT, Zorov DB, Kim S, Lee J, Nam NJ, Na KY, Han JS, Ma SK, Joo SY, Kim CS, Choi JS, Bae EH, Lee J, Kim SW, Cernaro V, Medici MA, Donato V, Trimboli D, Lorenzano G, Santoro D, Montalto G, Buemi M, Longo V, Segreto HRC, Almeida W, Schor N, Ramos MF, Gomes L, Razvickas C, Schor N, Gueler F, Rong S, Gutberlet M, Meier M, Mengel M, Wacker D, Haller H, Hueper K, Uzum A, Ersoy R, Cakalagaoglu F, Karaman M, Kolatan E, Sahin O, Yilmaz O, Cirit M, Inal S, Koc E, Okyay GU, Pasaoglu O, Gonul I, Oyar E, Pasaoglu H, Guz G, Sabbatini M, Rossano R, Andreucci M, Pisani A, Riccio E, Choi DE, Jeong JY, Kim SS, Chang YK, Na KR, Lee KW, Shin YT, Silva AF, Teixeira VC, Schor N, Meszaros K, Koleganova-Gut N, Schaefer F, Ritz E, Walacides D, Ruskamp N, Rong S, Hueper K, Meier M, Haller H, Schiffer M, Gueler F, Marom O, Haick H, Nakhoul F, Chen JF, Liu H, Ni HF, Lv LL, Zhang MH, Tang RN, Zhang JD, Ma KL, Chen PS, Liu BC, Wu VC, Young GH, Chen YM, Ko WJ, Misiara GP, Coimbra TM, Silva GEB, Costa RS, Francescato HDC, Neto MM, Dantas M, Lindberg K, Olauson H, Amin R, Ponnusamy A, Goetz R, Mohammadi M, Canfield A, Kublickiene K, Larsson T, Rodriguez J, Reyes EP, Cortes PP, Fernandez R, Yoon HE, Koh ES, Chung S, Shin SJ, Pazzano D, Montalto G, Cernaro V, Lupica R, Torre F, Costantino G, Buemi M, Prieto M, Gonzalez-Buitrago JM, Lopez-Hernandez F, Lopez-Novoa JM, Morales AI, Vicente-Vicente L, Ferreira L, Christo JS, Reis LA, Simoes MJ, Passos CD, Schor NS, Shimizu MHM, Canale D, de Braganca AC, Andrade L, Luchi WM, Seguro AC, Canale D, de Braganca AC, Goncalves J, Shimizu MHM, Volpini RA, Andrade L, Seguro AC, Garrido P, Fernandes J, Ribeiro S, Vala H, Parada B, Alves R, Belo L, Costa E, Santos-Silva A, Reis F. AKI - experimental models. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft107] [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: 11/13/2022] Open
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Shved N, Berishvili G, Mazel P, Baroiller JF, Eppler E. Growth hormone (GH) treatment acts on the endocrine and autocrine/paracrine GH/IGF-axis and on TNF-α expression in bony fish pituitary and immune organs. Fish Shellfish Immunol 2011; 31:944-952. [PMID: 21903170 DOI: 10.1016/j.fsi.2011.08.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 08/12/2011] [Accepted: 08/19/2011] [Indexed: 05/31/2023]
Abstract
There exist indications that the growth hormone (GH)/insulin-like growth factor (IGF) axis may play a role in fish immune regulation, and that interactions occur via tumour necrosis factor (TNF)-α at least in mammals, but no systematic data exist on potential changes in GH, IGF-I, IGF-II, GH receptor (GHR) and TNF-α expression after GH treatment. Thus, we investigated in the Nile tilapia the influence of GH injections by real-time qPCR at different levels of the GH/IGF-axis (brain, pituitary, peripheral organs) with special emphasis on the immune organs head kidney and spleen. Endocrine IGF-I served as positive control for GH treatment efficiency. Basal TNF-α gene expression was detected in all organs investigated with the expression being most pronounced in brain. Two consecutive intraperitoneal injections of bream GH elevated liver IGF-I mRNA and plasma IGF-I concentration. Also liver IGF-II mRNA and TNF-α were increased while the GHR was downregulated. In brain, no change occurred in the expression levels of all genes investigated. GH gene expression was exclusively detected in the pituitary where the GH injections elevated both GH and IGF-I gene expression. In the head kidney, GH upregulated IGF-I mRNA to an even higher extent than liver IGF-I while IGF-II and GHR gene expressions were not affected. Also in the spleen, no change occurred in GHR mRNA, however, IGF-I and IGF-II mRNAs were increased. In correlation, in situ hybridisation showed a markedly higher amount of IGF-I mRNA in head kidney and spleen after GH injection. In both immune tissues, TNF-α gene expression showed a trend to decrease after GH treatment. The stimulation of IGF-I and also partially of IGF-II expression in the fish immune organs by GH indicates a local role of the IGFs in immune organ regulation while the differential changes in TNF-α support the in mammals postulated interactions with the GH/IGF-axis which demand for further investigations.
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Affiliation(s)
- N Shved
- Research Group Neuro-endocrine-immune Interactions, Institute of Anatomy, University of Zürich, Winterthurerstr. 190, CH-8057 Zürich, Switzerland
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12
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Link K, Berishvili G, Shved N, D'Cotta H, Baroiller JF, Reinecke M, Eppler E. Seawater and freshwater challenges affect the insulin-like growth factors IGF-I and IGF-II in liver and osmoregulatory organs of the tilapia. Mol Cell Endocrinol 2010; 327:40-6. [PMID: 20621706 DOI: 10.1016/j.mce.2010.05.011] [Citation(s) in RCA: 25] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 04/13/2010] [Accepted: 05/23/2010] [Indexed: 11/18/2022]
Abstract
Contradictory studies suggest IGF-I in fish liver and gills is involved in osmoregulation, but nothing is known about the kidney and intestine's role nor about IGF-II's role in any organ. Tilapia were transferred from freshwater (FW) to seawater (SW) for 1week (wk) and retransferred to FW for another week. At 4h, 1d, 2d, 3d and 1wk after SW-transfer and FW-retransfer IGF-I, IGF-II and growth hormone receptor (GHR1) mRNA were measured by real-time PCR. Hepatic IGF-I, IGF-II and GHR1 mRNA were downregulated in parallel after SW-transfer, recovered and were again downregulated after FW-retransfer. In gills, IGF-I, IGF-II and GHR1 were upregulated synchronously after SW-transfer and, partially also after FW-retransfer. The renal genes were downregulated after SW-transfer and partially upregulated after FW-retransfer. Persisting upregulation in intestinal IGF-I mRNA occurred after FW-retransfer. Thus, endocrine and auto/paracrine IGF-I and IGF-II seem to be involved in fish osmoregulation in an organ-specific manner.
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Affiliation(s)
- Karl Link
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Zürich, Switzerland
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Shved N, Baroiller JF, Eppler E. Further Insights into the Insulin-like Growth Factor-I System of Bony Fish Pituitary with Special Emphasis on Reproductive Phases and Social Status. Ann N Y Acad Sci 2009; 1163:517-20. [DOI: 10.1111/j.1749-6632.2008.03632.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Shved N, Berishvili G, Häusermann E, D'Cotta H, Baroiller JF, Eppler E. Challenge with 17alpha-ethinylestradiol (EE2) during early development persistently impairs growth, differentiation, and local expression of IGF-I and IGF-II in immune organs of tilapia. Fish Shellfish Immunol 2009; 26:524-530. [PMID: 19340956 DOI: 10.1016/j.fsi.2009.02.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The enormous expansion of world-wide aquaculture has led to increasing interest in the regulation of fish immune system. Estrogen has recently been shown to inhibit the endocrine (liver-derived) and autocrine/paracrine local insulin-like growth factor-I system in fish. In order to address the potential actions of estrogen on the IGF system in immune organs, tilapia were fed with 17alpha-ethinylestradiol (EE2)-enriched food from 10 to 40 days post fertilization (DPF) to induce functional feminization, an approach commonly used in aquaculture. EE2-treated and control fish were sampled at 75 and 165 DPF. The expression levels of ER-alpha, IGF-I, IGF-II and growth hormone receptor (GH-R) mRNA in spleen and head kidney were determined by real-time PCR and the expressing sites of IGF-I mRNA identified by in situ hybridisation. Ratios of spleen length and weight to body length and weight were determined. At 165 DPF, the length (4.9% vs. 7.6%) and weight (0.084% vs. 0.132%) ratios were significantly lowered in EE2-treated fish and number and size of the melanomacrophage centres were considerably reduced. At 75 DPF, both in spleen and head kidney of EE2-treated fish the expression levels of IGF-I and IGF-II mRNA were markedly diminished. The suppression was more pronounced for IGF-I (spleen: -12.071-fold; head kidney: -8.413-fold) than for IGF-II (spleen: -4.102-fold; head kidney: -1.342-fold). In agreement, clearly fewer leucocytes and macrophages in head kidney and spleen of EE2-treated fish contained IGF-I mRNA as shown by in situ hybridisation. ER-alpha mRNA expression in spleen was increased at 75 DPF but unchanged in head kidney. GH-R gene expression showed a mild upregulation at 165 DPF in both tissues. Thus, exposure to EE2 during early development affected distinctly the IGF system in tilapia immune organs. It led to lasting impairment of spleen growth and differentiation that can be attributed to an interaction of EE2 with IGF-I and, less pronouncedly, IGF-II. Especially, the impairment of spleen and melanomacrophage centres might interfere with the antigen presentation capacity of the immune system and, thus, alter susceptibility to infection.
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Affiliation(s)
- Natallia Shved
- Research Group Neuro-Endocrine-Immune Interactions, Institute of Anatomy, University of Zürich, Winterthurerstr. 190, 8057 Zürich, Switzerland
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Shved N, Berishvili G, Baroiller JF, Segner H, Reinecke M. Environmentally relevant concentrations of 17alpha-ethinylestradiol (EE2) interfere with the growth hormone (GH)/insulin-like growth factor (IGF)-I system in developing bony fish. Toxicol Sci 2008; 106:93-102. [PMID: 18660547 DOI: 10.1093/toxsci/kfn150] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The aim of this study was to evaluate whether effects of environmental estrogens on fish growth and reproduction may be mediated via modulating the growth hormone (GH)/insulin-like growth factor I (IGF-I) system. To this end, developing male and female monosex populations of tilapia were exposed to 17alpha-ethinylestradiol (EE2) at 5 and 25 ng EE2/l water from 10-day postfertilization (DPF) until 100 DPF. Under exposure to both EE2 concentrations, sex ratio shifted toward more females and body length, and weight were significantly reduced in males. The growth-reducing effect was associated with significant changes in hepatic IGF-I expression, both in males and females and with significant alterations of IGF-I mRNA and GH mRNA in the brain. The changes in IGF-I and GH mRNA were accompanied by altered estrogen receptor alpha (ERalpha) expression in brain and liver. These findings point to an influence of estrogenic exposure on the endocrine GH/IGF-I axis. In addition, the EE2 treatment resulted in significant changes of ERalpha and IGF-I expression in ovaries and testis, suggesting that the estrogens interact not only with the endocrine but also with the autocrine/paracrine part of the IGF-I system. Overall, our results provide evidence that EE2 at environmentally relevant concentrations is able to interfere with the GH/IGF-I system in bony fish and that the impairing effects of estrogens reported on fish growth and reproductive functions may rather result from a cross talk between the sex steroid and the IGF-I system than be toxicological.
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Affiliation(s)
- Natallia Shved
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Zürich, Switzerland
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Shved N, Berishvili G, D'Cotta H, Baroiller JF, Segner H, Eppler E, Reinecke M. Ethinylestradiol differentially interferes with IGF-I in liver and extrahepatic sites during development of male and female bony fish. J Endocrinol 2007; 195:513-23. [PMID: 18000313 DOI: 10.1677/joe-07-0295] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [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: 11/27/2022]
Abstract
Growth and sexual development are closely interlinked in fish; however, no reports exist on potential effects of estrogen on the GH/IGF-I-axis in developing fish. We investigate whether estrogen exposure during early development affects growth and the IGF-I system, both at the systemic and tissue level. Tilapia were fed from 10 to 40 days post fertilization (DPF) with 17alpha-ethinylestradiol (EE(2)). At 50, 75, 90, and 165 DPF, length, weight, sex ratio, serum IGF-I (RIA), pituitary GH mRNA and IGF-I, and estrogen receptor alpha (ERalpha) mRNA in liver, gonads, brain, and gills (real-time PCR) were determined and the results correlated to those of in situ hybridization for IGF-I. Developmental exposure to EE(2) had persistent effects on sex ratio and growth. Serum IGF-I, hepatic IGF-I mRNA, and the number of IGF-I mRNA-containing hepatocytes were significantly decreased at 75 DPF, while liver ERalpha mRNA was significantly induced. At 75 DPF, a transient decline of IGF-I mRNA and a largely reduced number of IGF-I mRNA-containing neurons were observed in the female brain. In both sexes, pituitary GH mRNA was significantly suppressed. A transient downregulation of IGF-I mRNA occurred in ovaries (75 DPF) and testes (90 DPF). In agreement, in situ hybridization revealed less IGF-I mRNA signals in granulosa and germ cells. Our results show for the first time that developmental estrogen treatment impairs GH/IGF-I expression in fish, and that the effects persist. These long-lasting effects both seem to be exerted indirectly via inhibition of pituitary GH and directly by suppression of local IGF-I in organ-specific cells.
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Affiliation(s)
- Natallia Shved
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Winterthurerstr. 190, CH-8057 Zürich, Switzerland
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Eppler E, Caelers A, Shved N, Hwang G, Rahman AM, Maclean N, Zapf J, Reinecke M. Insulin-like growth factor I (IGF-I) in a growth-enhanced transgenic (GH-overexpressing) bony fish, the tilapia (Oreochromis niloticus): indication for a higher impact of autocrine/paracrine than of endocrine IGF-I. Transgenic Res 2007; 16:479-89. [PMID: 17431805 DOI: 10.1007/s11248-007-9093-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2006] [Accepted: 03/19/2007] [Indexed: 01/07/2023]
Abstract
Several lines of growth hormone (GH)-overexpressing fish have been produced and analysed for growth and fertility parameters. However, only few data are available on the growth-promoting hormone insulin-like growth factor I (IGF-I) that mediates most effects of GH, and these are contradictory. Using quantitative real-time RT-PCR, radioimmunoassay, in situ hybridization, immunohistochemistry, and radiochromatography we investigated IGF-I and IGF binding proteins (IGFBPs) in an adult (17 months old) transgenic (GH-overexpressing) tilapia (Oreochromis niloticus). The transgenics showed an around 1.5-fold increase in length and an approximately 2.3-fold higher weight than the non-transgenics. Using radioimmunoassay, the serum IGF-I levels were lower (6.22 +/- 0.75 ng/ml) in transgenic than in wild-type (15.01 +/- 1.49 ng/ml) individuals (P = 0.0012). Radioimmunoassayable IGF-I in transgenic liver was 4.2-times higher than in wild-type (16.0 +/- 2.21 vs. 3.83 +/- 0.71 ng/g, P = 0.0017). No hepatocytes in wild-type but numerous hepatocytes in transgenic liver contained IGF-I-immunoreactivity. RT-PCR revealed a 1.4-times higher IGF-I mRNA expression in the liver of the transgenics (10.51 +/- 0.82 vs. 7.3 +/- 0.49 pg/microg total RNA, P = 0.0032). In correspondence, in situ hybridization showed more IGF-I mRNA containing hepatocytes in the transgenics. A twofold elevated IGF-I mRNA expression was determined in the skeletal muscle of transgenics (0.33 +/- 0.02 vs. 0.16 +/- 0.01 pg/microg total RNA, P < 0.0001). Both liver and serum of transgenics showed increased IGF-I binding. The increased IGFBP content in the liver may lead to retention of IGF-I, and/or the release of IGF-I into the circulation may be slower resulting in accumulation of IGF-I in the hepatocytes. Our results indicate that the enhanced growth of the transgenics likely is due to enhanced autocrine/paracrine action of IGF-I in extrahepatic sites, as shown here for skeletal muscle.
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Affiliation(s)
- Elisabeth Eppler
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Winterthurerstr 190, Zürich, Switzerland
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Eppler E, Shved N, Moret O, Reinecke M. IGF-I is distinctly located in the bony fish pituitary as revealed for Oreochromis niloticus, the Nile tilapia, using real-time RT-PCR, in situ hybridisation and immunohistochemistry. Gen Comp Endocrinol 2007; 150:87-95. [PMID: 16963049 DOI: 10.1016/j.ygcen.2006.07.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2006] [Revised: 07/14/2006] [Accepted: 07/23/2006] [Indexed: 01/01/2023]
Abstract
In bony fish, IGF-I released from the liver under the control of pituitary GH is the main endocrine regulator of growth, maintenance and development, and the amount of circulating IGF-I regulates synthesis and release of GH. In mammals and amphibia, evidence indicates that anterior pituitary endocrine cells also contain IGF-I. However, only preliminary and conflicting data exist on IGF-I gene expression in bony fish pituitary. Thus, we investigated the presence of IGF-I in the tilapia (Oreochromis niloticus) pituitary by quantitative real-time RT-PCR, in situ hybridisation and immunohistochemistry. The absolute amount of IGF-I mRNA in the whole pituitary (7.4+/-3.3 x 10(-3)pg/microg total RNA) was 1000-times lower than in liver (7.5+/-3.1 pg/microg total RNA). IGF-I peptide occurred in both neuro- and adenohypophysis but IGF-I gene expression was mainly restricted to the adenohypophysis. In the neurohypophysis, only few cells, probably pituicytes, contained IGF-I mRNA whereas IGF-I peptide was found also in numerous axons in the pars nervosa. In the adenohypophysis, both IGF-I mRNA and peptide were present in the majority of ACTH cells in all individuals investigated. In alpha-MSH cells, only IGF-I mRNA but no IGF-I peptide was detected likely suggesting an immediate release of IGF-I after synthesis. IGF-I mRNA and peptide were further observed in GH cells but their presence showed pronounced inter-individual differences likely due to the physiological, e.g., nutritional, status of the individual. IGF-I released from the GH cells may serve as auto/paracrine mediator of a negative feedback mechanism in addition to liver-derived endocrine IGF-I. Generally, the constitutive synthesis of IGF-I in ACTH cells and the varying content in GH and alpha-MSH cells suggest particular roles for IGF-I. Local IGF-I may regulate synthesis and release of pituitary hormones in an autocrine and/or paracrine manner as well as prevent apoptosis and stimulate proliferation of endocrine cells.
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Affiliation(s)
- Elisabeth Eppler
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Winterthurerstr. 190, CH-8057 Zürich, Switzerland.
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Berishvili G, Shved N, Eppler E, Clota F, Baroiller JF, Reinecke M. Organ-specific expression of IGF-I during early development of bony fish as revealed in the tilapia, Oreochromis niloticus, by in situ hybridization and immunohistochemistry: indication for the particular importance of local IGF-I. Cell Tissue Res 2006; 325:287-301. [PMID: 16596395 DOI: 10.1007/s00441-005-0133-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Accepted: 11/23/2005] [Indexed: 12/20/2022]
Abstract
The cellular sites of insulin-like growth factor I (IGF-I) synthesis in the early developing tilapia (0-140 days post fertilization, DPF) were investigated. IGF-I mRNA and peptide appeared in liver as early as 4 DPF and in gastro-intestinal epithelial cells between 5-9 DPF. In exocrine pancreas, the expression of IGF-I started at 4 DPF and continued until 90 DPF. IGF-I production was detected in islets at 6 DPF in non-insulin cells and occurred throughout life. In renal tubules and ducts, IGF-I production started at 8 DPF. IGF-I production in chondrocytes had its onset at 4 DPF, was more pronounced in growing regions and was also found in adults. IGF-I mRNA and peptide appeared in the cytoplasm of skeletal muscle cells at 4 DPF. In gill chloride cells, IGF-I production started at 6 DPF. At 13 DPF, IGF-I was detected in cardiac myocytes. IGF-I-producing epidermal cells appeared at 5 DPF. In brain and ganglia, IGF-I was expressed in virtually all neurones from 6 to 29 DPF, their number decreasing with age. Neurosecretory IGF-I-immunoreactive axons were first seen in the neurohypophysis around 17 DPF. Endocrine cells of the adenohypophysis exhibited IGF-I mRNA at 28 DPF and IGF-I immunoreactivity at 40 DPF. Thus, IGF-I appeared early (4-5 DPF), first in liver, the main source of endocrine IGF-I, and then in organs involved in growth or metabolism. The expression of IGF-I was more pronounced during development than in juvenile and adult life. Local IGF-I therefore seems to have a high functional impact in early growth, metabolism and organogenesis.
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Affiliation(s)
- Giorgi Berishvili
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Zürich, Switzerland
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Kasper RS, Shved N, Takahashi A, Reinecke M, Eppler E. A systematic immunohistochemical survey of the distribution patterns of GH, prolactin, somatolactin, beta-TSH, beta-FSH, beta-LH, ACTH, and alpha-MSH in the adenohypophysis of Oreochromis niloticus, the Nile tilapia. Cell Tissue Res 2006; 325:303-13. [PMID: 16552525 DOI: 10.1007/s00441-005-0119-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Accepted: 11/03/2005] [Indexed: 10/24/2022]
Abstract
Fish pituitary plays a central role in the control of growth, development, reproduction and adaptation to the environment. Several types of hormone-secreting adenohypophyseal cells have been characterised and localised in diverse teleost species. The results suggest a similar distribution pattern among the species investigated. However, most studies deal with a single hormone or hormone family. Thus, we studied adjacent sections of the pituitary of Oreochromis niloticus, the tilapia, by conventional staining and immunohistochemistry with specific antisera directed against growth hormone (GH), prolactin (PRL), somatolactin (SL), thyrotropin (beta-TSH), follicle-stimulating hormone (beta-FSH), luteinising hormone (beta-LH), adrenocorticotropic hormone (ACTH) and melanocyte-stimulating hormone (alpha-MSH). The pituitary was characterised by a close interdigitating neighbourhood of neurohypophysis (PN) and adenohypophysis. PRL-immunoreactive and ACTH-immunoreactive cells were detected in the rostral pars distalis. GH-immunoreactive cells were present in the proximal pars distalis (PPD). A small region of the PPD contained beta-TSH-immunoreactive cells, and beta-LH-immunoreactive cells covered approximately the remaining parts. Centrally, beta-FSH-immunoreactive cells were detected in the vicinity of the GH-containing cells. Some of these cells also displayed beta-LH immunoreactivity. The pars intermedia was characterised by branches of the PN surrounded by SL-containing and alpha-MSH-immunoreactive cells. The ACTH and alpha-MSH antisera were observed to cross-react with the respective antigens. This cross-reactivity was abolished by pre-absorption. We present a complete map of the distinct localisation sites for the classical pituitary hormones, thereby providing a solid basis for future research on teleost pituitary.
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Affiliation(s)
- Romano Silvio Kasper
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Winterthurerstrasse 190, Zürich, CH-8057, Switzerland
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Shved N, Berishvili G, D'Cotta H, Baroiller JF, Eppler E, Segner H, Reinecke M. A Survey on the Expression of IGF-I in the Early Developing Bony Fish with Special Emphasis on the Tilapia,Oreochromis niloticus. Ann N Y Acad Sci 2006; 1040:469-71. [PMID: 15891092 DOI: 10.1196/annals.1327.093] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The present study investigates the expression of IGF-I in the early developing tilapia (Oreochromis niloticus). IGF-I was detected very early in ontogeny (4-5 days postfertilization, DPF), first in liver and in organs involved in growth and metabolism, thus suggesting a high physiological impact of IGF-I in growth, metabolism, and organogenesis.
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Affiliation(s)
- Natallia Shved
- Division of Neuroendocrinology, Institute of Anatomy, University of Zürich, Switzerland
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