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Herrera MG, Pizzuto M, Lonez C, Rott K, Hütten A, Sewald N, Ruysschaert JM, Dodero VI. Large supramolecular structures of 33-mer gliadin peptide activate toll-like receptors in macrophages. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:1417-1427. [DOI: 10.1016/j.nano.2018.04.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/23/2018] [Accepted: 04/16/2018] [Indexed: 02/08/2023]
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Charlier P, Weil R, Deblock R, Augias A, Deo S. Helium ion microscopy (HIM): Proof of the applicability on altered human remains (hairs of Holy Maria-Magdalena). Leg Med (Tokyo) 2016; 24:84-85. [PMID: 28081796 DOI: 10.1016/j.legalmed.2016.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 12/10/2016] [Accepted: 12/12/2016] [Indexed: 10/20/2022]
Affiliation(s)
- P Charlier
- Section of Medical and Forensic Anthropology, UFR of Health Sciences (UVSQ & EA 4569 Paris-Descartes), 2 avenue de la source de la Bièvre, 78180 Montigny-Le-Bretonneux, France; CASH & IPES, avenue de la République, 92000 Nanterre, France.
| | - R Weil
- Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - R Deblock
- Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - A Augias
- Section of Medical and Forensic Anthropology, UFR of Health Sciences (UVSQ & EA 4569 Paris-Descartes), 2 avenue de la source de la Bièvre, 78180 Montigny-Le-Bretonneux, France
| | - S Deo
- Section of Medical and Forensic Anthropology, UFR of Health Sciences (UVSQ & EA 4569 Paris-Descartes), 2 avenue de la source de la Bièvre, 78180 Montigny-Le-Bretonneux, France
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Bertling F, Bendix I, Drommelschmidt K, Wisniewski HG, Felderhoff-Mueser U, Keller M, Prager S. Tumor necrosis factor-inducible gene 6 protein: A novel neuroprotective factor against inflammation-induced developmental brain injury. Exp Neurol 2016; 279:283-289. [PMID: 26953231 DOI: 10.1016/j.expneurol.2016.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 02/20/2016] [Accepted: 03/02/2016] [Indexed: 11/18/2022]
Abstract
Inflammation is an important factor contributing to developmental brain injury in preterm infants. Although tumor necrosis factor-inducible gene 6 protein (TSG-6) has immunomodulatory effects in several inflammatory conditions of adult animals, nothing is currently known about the role of TSG-6 in the developing brain, its impact on perinatal inflammation and its therapeutic potential. The aim of the current work was 1) to characterize the developmental expression of TSG-6 in the newborn rat brain, 2) to evaluate the impact of LPS exposure on TSG-6 expression and 3) to assess the therapeutic potential of exogenous TSG-6 administration. Brain hemispheres of healthy Wistar rats (postnatal day 1-postnatal day 15 (P1-P15)) were evaluated with regard to the physiological expression of TSG-6. LPS-treated rats (0.25mg/kg LPS i.p. on P3) were analyzed for inflammation-induced changes in TSG-6 and cytokine expression. To evaluate whether exogenous recombinant human (rh)TSG-6 affects inflammation-induced brain injury, newborn Wistar rats, exposed to LPS on P3, were treated with rhTSG-6 i.p. (four repetitive doses of 2.25mg/kg every 12h, first dose 3h before LPS injection). PCR, Western blotting and multiplex ELISA were performed according to standard protocols. TSG-6 is physiologically expressed in the developing brain with a linear increase in expression from P1 to P15 at the mRNA level. At P6, regional differences in TSG-6 expression in the cortex, thalamus and striatum were detected at mRNA and protein level. Furthermore, TSG-6 gene expression was significantly increased by inflammation (induced by LPS treatment). Combined treatment with LPS and TSG-6 vs. LPS exposure alone, resulted in significant down-regulation of cleaved caspase-3, a marker of apoptosis and neuronal plasticity. In addition, several inflammatory serum markers were decreased after TSG-6 treatment. Finally, TSG-6 is physiologically expressed in the developing brain. Changes of TSG-6 expression associated with inflammation suggest a role of TSG-6 in neuroinflammation. Reduction of cleaved caspase-3 by TSG-6 treatment demonstrates the putative neuroprotective potential of exogenous TSG-6 administration in inflammation-induced developmental brain injury.
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Affiliation(s)
- F Bertling
- Dept. of Pediatrics I-Neonatology, University Hospital Essen, University Duisburg-Essen, Germany
| | - I Bendix
- Dept. of Pediatrics I-Neonatology, University Hospital Essen, University Duisburg-Essen, Germany
| | - K Drommelschmidt
- Dept. of Pediatrics I-Neonatology, University Hospital Essen, University Duisburg-Essen, Germany
| | - H G Wisniewski
- Dept. of Microbiology, New York University School of Medicine, New York, USA
| | - U Felderhoff-Mueser
- Dept. of Pediatrics I-Neonatology, University Hospital Essen, University Duisburg-Essen, Germany
| | - M Keller
- Dept. of Pediatrics I-Neonatology, University Hospital Essen, University Duisburg-Essen, Germany; Technical University Munich, Germany; Children's Hospital Passau, Germany
| | - S Prager
- Dept. of Pediatrics I-Neonatology, University Hospital Essen, University Duisburg-Essen, Germany
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Joens MS, Huynh C, Kasuboski JM, Ferranti D, Sigal YJ, Zeitvogel F, Obst M, Burkhardt CJ, Curran KP, Chalasani SH, Stern LA, Goetze B, Fitzpatrick JAJ. Helium Ion Microscopy (HIM) for the imaging of biological samples at sub-nanometer resolution. Sci Rep 2013; 3:3514. [PMID: 24343236 PMCID: PMC3865489 DOI: 10.1038/srep03514] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 11/26/2013] [Indexed: 11/08/2022] Open
Abstract
Scanning Electron Microscopy (SEM) has long been the standard in imaging the sub-micrometer surface ultrastructure of both hard and soft materials. In the case of biological samples, it has provided great insights into their physical architecture. However, three of the fundamental challenges in the SEM imaging of soft materials are that of limited imaging resolution at high magnification, charging caused by the insulating properties of most biological samples and the loss of subtle surface features by heavy metal coating. These challenges have recently been overcome with the development of the Helium Ion Microscope (HIM), which boasts advances in charge reduction, minimized sample damage, high surface contrast without the need for metal coating, increased depth of field, and 5 angstrom imaging resolution. We demonstrate the advantages of HIM for imaging biological surfaces as well as compare and contrast the effects of sample preparation techniques and their consequences on sub-nanometer ultrastructure.
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Affiliation(s)
- Matthew S. Joens
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Chuong Huynh
- Ion Microscopy Innovation Center, Carl Zeiss Microscopy LLC, One Corporation Way, Peabody, MA 01960, USA
| | - James M. Kasuboski
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - David Ferranti
- Ion Microscopy Innovation Center, Carl Zeiss Microscopy LLC, One Corporation Way, Peabody, MA 01960, USA
| | - Yury J. Sigal
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Fabian Zeitvogel
- Center for Applied Geosciences, University Tübingen, Hoelderlinstr. 12, 72074 Tuebingen, Germany
| | - Martin Obst
- Center for Applied Geosciences, University Tübingen, Hoelderlinstr. 12, 72074 Tuebingen, Germany
| | - Claus J. Burkhardt
- NMI Natural and Medical Sciences Institute, Markwiesenstr. 55, 72770 Reutlingen, Germany
| | - Kevin P. Curran
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Sreekanth H. Chalasani
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Lewis A. Stern
- Ion Microscopy Innovation Center, Carl Zeiss Microscopy LLC, One Corporation Way, Peabody, MA 01960, USA
| | - Bernhard Goetze
- Ion Microscopy Innovation Center, Carl Zeiss Microscopy LLC, One Corporation Way, Peabody, MA 01960, USA
| | - James A. J. Fitzpatrick
- Waitt Advanced Biophotonics Center, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
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