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Koepple C, Pollmann L, Pollmann NS, Schulte M, Kneser U, Gretz N, Schmidt VJ. Microporous Polylactic Acid Scaffolds Enable Fluorescence-Based Perfusion Imaging of Intrinsic In Vivo Vascularization. Int J Mol Sci 2023; 24:14813. [PMID: 37834261 PMCID: PMC10573679 DOI: 10.3390/ijms241914813] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/29/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
In vivo tissue engineering (TE) techniques like the AV loop model provide an isolated and well-defined microenvironment to study angiogenesis-related cell interactions. Functional visualization of the microvascular network within these artificial tissue constructs is crucial for the fundamental understanding of vessel network formation and to identify the underlying key regulatory mechanisms. To facilitate microvascular tracking advanced fluorescence imaging techniques are required. We studied the suitability of microporous polylactic acid (PLA) scaffolds with known low autofluorescence to form axial vascularized tissue constructs in the AV loop model and to validate these scaffolds for fluorescence-based perfusion imaging. Compared to commonly used collagen elastin (CE) scaffolds, the total number of vessels and cells in PLA scaffolds was lower. In detail, CE-based constructs exhibited significantly higher vessel numbers on day 14 and 28 (d14: 316 ± 53; d28: 610 ± 74) compared to the respective time points in PLA-based constructs (d14: 144 ± 18; d28: 327 ± 34; each p < 0.05). Analogously, cell counts in CE scaffolds were higher compared to corresponding PLA constructs (d14: 7661.25 ± 505.93 and 5804.04 ± 716.59; d28: 11211.75 + 1278.97 and 6045.71 ± 572.72, p < 0.05). CE scaffolds showed significantly higher vessel densities in proximity to the main vessel axis compared to PLA scaffolds (200-400 µm and 600-800 µm on day 14; 400-1000 µm and 1400-1600 µm on day 28). CE scaffolds had significantly higher cell counts on day 14 at distances from 800 to 2000 µm and at distances from 400 to 1600 µm on day 28. While the total number of vessels and cells in PLA scaffolds were lower, both scaffold types were ideally suited for axial vascularization techniques. The intravascular perfusion of PLA-based constructs with fluorescence dye MHI148-PEI demonstrated dye specificity against vascular walls of low- and high-order branches as well as capillaries and facilitated the fluorescence-based visualization of microcirculatory networks. Fluorophore tracking may contribute to the development of automated quantification methods after 3D reconstruction and image segmentation. These technologies may facilitate the characterization of key regulators within specific subdomains and add to the current understanding of vessel formation in axially vascularized tissue constructs.
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Affiliation(s)
- Christoph Koepple
- Department for Hand-, Plastic- and Reconstructive Surgery, BG Trauma Center Ludwigshafen, Heidelberg University, 67071 Ludwigshafen, Germany; (L.P.); (N.S.P.); (M.S.); (U.K.)
| | - Lukas Pollmann
- Department for Hand-, Plastic- and Reconstructive Surgery, BG Trauma Center Ludwigshafen, Heidelberg University, 67071 Ludwigshafen, Germany; (L.P.); (N.S.P.); (M.S.); (U.K.)
| | - Nicola Sariye Pollmann
- Department for Hand-, Plastic- and Reconstructive Surgery, BG Trauma Center Ludwigshafen, Heidelberg University, 67071 Ludwigshafen, Germany; (L.P.); (N.S.P.); (M.S.); (U.K.)
| | - Matthias Schulte
- Department for Hand-, Plastic- and Reconstructive Surgery, BG Trauma Center Ludwigshafen, Heidelberg University, 67071 Ludwigshafen, Germany; (L.P.); (N.S.P.); (M.S.); (U.K.)
| | - Ulrich Kneser
- Department for Hand-, Plastic- and Reconstructive Surgery, BG Trauma Center Ludwigshafen, Heidelberg University, 67071 Ludwigshafen, Germany; (L.P.); (N.S.P.); (M.S.); (U.K.)
| | - Norbert Gretz
- Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, 68167 Mannheim, Germany;
| | - Volker J. Schmidt
- Department of Plastic Surgery and Hand Surgery, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland;
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de Carvalho AC, Dias CSB, Coimbra LD, Rocha RPF, Borin A, Fontoura MA, Carvalho M, Proost P, Nogueira ML, Consonni SR, Sesti-Costa R, Marques RE. Characterization of Systemic Disease Development and Paw Inflammation in a Susceptible Mouse Model of Mayaro Virus Infection and Validation Using X-ray Synchrotron Microtomography. Int J Mol Sci 2023; 24:4799. [PMID: 36902230 PMCID: PMC10003659 DOI: 10.3390/ijms24054799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/03/2023] [Accepted: 01/12/2023] [Indexed: 03/06/2023] Open
Abstract
Mayaro virus (MAYV) is an emerging arthropod-borne virus endemic in Latin America and the causative agent of arthritogenic febrile disease. Mayaro fever is poorly understood; thus, we established an in vivo model of infection in susceptible type-I interferon receptor-deficient mice (IFNAR-/-) to characterize the disease. MAYV inoculations in the hind paws of IFNAR-/- mice result in visible paw inflammation, evolve into a disseminated infection and involve the activation of immune responses and inflammation. The histological analysis of inflamed paws indicated edema at the dermis and between muscle fibers and ligaments. Paw edema affected multiple tissues and was associated with MAYV replication, the local production of CXCL1 and the recruitment of granulocytes and mononuclear leukocytes to muscle. We developed a semi-automated X-ray microtomography method to visualize both soft tissue and bone, allowing for the quantification of MAYV-induced paw edema in 3D with a voxel size of 69 µm3. The results confirmed early edema onset and spreading through multiple tissues in inoculated paws. In conclusion, we detailed features of MAYV-induced systemic disease and the manifestation of paw edema in a mouse model extensively used to study infection with alphaviruses. The participation of lymphocytes and neutrophils and expression of CXCL1 are key features in both systemic and local manifestations of MAYV disease.
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Affiliation(s)
- Ana Carolina de Carvalho
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Rua Bertrand Russel, Campinas 13083-970, Brazil
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute, Katholieke Universiteit Leuven (KU Leuven), Herestraat 49 Box 1042, 3000 Leuven, Belgium
| | - Carlos Sato B. Dias
- Institut Für Photonenforschung und Synchrotronstrahlung (IPS), Karlsruher Institut Für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Karlsruhe, Germany
| | - Laís D. Coimbra
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Rua Bertrand Russel, Campinas 13083-970, Brazil
| | - Rebeca P. F. Rocha
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Rua Bertrand Russel, Campinas 13083-970, Brazil
| | - Alexandre Borin
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
- Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas (UNICAMP), Rua Bertrand Russel, Campinas 13083-970, Brazil
| | - Marina A. Fontoura
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Rua Monteiro Lobato, s/n, Campinas 13083-970, Brazil
| | - Murilo Carvalho
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
- Brazilian Synchrotron Light Laboratory—LNLS, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute, Katholieke Universiteit Leuven (KU Leuven), Herestraat 49 Box 1042, 3000 Leuven, Belgium
| | - Maurício L. Nogueira
- Laboratório de Pesquisas em Virologia (LPV), São José do Rio Preto Medical School (FAMERP), Av. Brigadeiro Faria Lima, 5416-Vila São Pedro, São José do Rio Preto 15090-000, Brazil
| | - Sílvio R. Consonni
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Rua Monteiro Lobato, s/n, Campinas 13083-970, Brazil
| | - Renata Sesti-Costa
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
| | - Rafael Elias Marques
- Brazilian National Biosciences Laboratory—LNBio, Brazilian Center for Research in Energy and Materials—CNPEM, R. Giuseppe Máximo Scolfaro, 10000-Bosque das Palmeiras, Campinas 13083-100, Brazil
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Brenna C, Simioni C, Varano G, Conti I, Costanzi E, Melloni M, Neri LM. Optical tissue clearing associated with 3D imaging: application in preclinical and clinical studies. Histochem Cell Biol 2022; 157:497-511. [PMID: 35235045 PMCID: PMC9114043 DOI: 10.1007/s00418-022-02081-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2022] [Indexed: 12/23/2022]
Abstract
Understanding the inner morphology of intact tissues is one of the most competitive challenges in modern biology. Since the beginning of the twentieth century, optical tissue clearing (OTC) has provided solutions for volumetric imaging, allowing the microscopic visualization of thick sections of tissue, organoids, up to whole organs and organisms (for example, mouse or rat). Recently, tissue clearing has also been introduced in clinical settings to achieve a more accurate diagnosis with the support of 3D imaging. This review aims to give an overview of the most recent developments in OTC and 3D imaging and to illustrate their role in the field of medical diagnosis, with a specific focus on clinical applications.
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Affiliation(s)
- Cinzia Brenna
- Department of Translational Medicine, University of Ferrara, 44121, Ferrara, Italy.,Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Carolina Simioni
- Department of Life Sciences and Biotechnology, University of Ferrara, 44121, Ferrara, Italy.,LTTA - Electron Microscopy Center, University of Ferrara, 44121, Ferrara, Italy
| | - Gabriele Varano
- Department of Translational Medicine, University of Ferrara, 44121, Ferrara, Italy
| | - Ilaria Conti
- Department of Translational Medicine, University of Ferrara, 44121, Ferrara, Italy
| | - Eva Costanzi
- Department of Translational Medicine, University of Ferrara, 44121, Ferrara, Italy
| | - Mattia Melloni
- Department of Translational Medicine, University of Ferrara, 44121, Ferrara, Italy
| | - Luca Maria Neri
- Department of Translational Medicine, University of Ferrara, 44121, Ferrara, Italy. .,LTTA - Electron Microscopy Center, University of Ferrara, 44121, Ferrara, Italy.
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Avilov SV. Navigating across multi-dimensional space of tissue clearing parameters. Methods Appl Fluoresc 2021; 9:022001. [PMID: 33592593 DOI: 10.1088/2050-6120/abe6fb] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Optical tissue clearing refers to physico-chemical treatments which make thick biological samples transparent by removal of refractive index gradients and light absorbing substances. Although tissue clearing was first reported in 1914, it was not widely used in light microscopy until 21th century, because instrumentation of that time did not permit to acquire and handle images of thick (mm to cm) samples as whole. Rapid progress in optical instrumentation, computers and software over the last decades made micrograph acquisition of centimeter-thick samples feasible. This boosted tissue clearing use and development. Numerous diverse protocols have been developed. They use organic solvents or water-miscible substances, such as detergents and chaotropic agents; some protocols require application of electric field or perfusion with special devices. There is no 'best-for-all' tissue clearing method. Depending on the case, one or another protocol is more suitable. Most of protocols require days or even weeks to complete, thus choosing an unsuitable protocol may cause an important waste of time. Several inter-dependent parameters should be taken into account to choose a tissue clearing protocol, such as: (1) required image quality (resolution, contrast, signal to noise ratio etc), (2) nature and size of the sample, (3) type of labels, (4) characteristics of the available instrumentation, (5) budget, (6) time budget, and (7) feasibility. Present review focusses on the practical aspects of various tissue clearing techniques. It is aimed to help non-experts to choose tissue clearing techniques which are optimal for their particular cases.
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Affiliation(s)
- Sergiy V Avilov
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
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Sutherland MR. Introduction to a special issue on kidney development and disease. Anat Rec (Hoboken) 2020; 303:2507-2510. [PMID: 32613692 DOI: 10.1002/ar.24467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 04/15/2020] [Indexed: 02/06/2023]
Abstract
Enriching our understanding of the anatomy of the kidneys, in development, health, and disease, has been the primary focus of Professor John Bertram's distinguished research career to date. Among other notable achievements, his landmark analyses of nephron number in over 400 human kidneys (the Monash Series), and his refinement of stereological techniques for renal structural analyses, have proven him an international leader in renal anatomy research. In this Special Issue, we (some of John's collaborators, colleagues, and former students) celebrate John's career with a series of 20 review and original research articles relevant to his expertise: (a) renal anatomy, physiology, and pathology, (b) kidney development, podocyte biology, and applications of renal stem cells, (c) renal developmental programming, and (d) contemporary methodologies in renal research; his accomplishments as a Head (Chair) of an Anatomy Department are also illustrated. We hope that this collection will serve as both an important resource, and a source of inspiration, to renal anatomy researchers and educators alike.
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Affiliation(s)
- Megan R Sutherland
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
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