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Recent tissue-clearing approaches have become important alternatives to standard histology approaches. However, light scattering in thick tissues and the size restrictions on samples that can be imaged with standard light-sheet microscopy pose limitations for analyzing large samples such as an entire rodent body. We developed 'ultimate DISCO' (uDISCO) clearing to overcome these limitations in volumetric imaging. uDISCO preserves fluorescent proteins over months and renders intact organs and rodent bodies transparent while reducing their size up to 65%. We used uDISCO to image neuronal connections and vasculature from head to toe over 7 cm and to perform unbiased screening of transplanted stem cells within the entire body of adult mice. uDISCO is compatible with diverse labeling methods and archival human tissue, and it can readily be used in various biomedical applications to study organization of large organ systems throughout entire organisms.
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http://dx.doi.org/10.1038/nmeth.3964 | DOI Listing |
Monaldi Arch Chest Dis
May 2025
Department of Pulmonary Medicine, Mahatma Gandhi Medical College, Jaipur, Rajasthan.
Acute exacerbations of chronic obstructive pulmonary disease (COPD) are associated with compromised diaphragmatic function. This can be evaluated using point-of-care ultrasound. The association of diaphragm function with hospital length of stay or mortality has not been assessed earlier.
View Article and Find Full Text PDFAdv Sci (Weinh)
June 2024
Department of Neuroscience, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 3525433, Israel.
The current consensus holds that optically-cleared specimens are unsuitable for Magnetic Resonance Imaging (MRI); exhibiting absence of contrast. Prior studies combined MRI with tissue-clearing techniques relying on the latter's ability to eliminate lipids, thereby fostering the assumption that lipids constitute the primary source of ex vivo MRI-contrast. Nevertheless, these findings contradict an extensive body of literature that underscores the contribution of other features to contrast.
View Article and Find Full Text PDFJ Neuroinflammation
April 2024
Gladstone Institute for Neurological Disease, San Francisco, CA, USA.
Background: Traumatic brain injury (TBI) causes significant blood-brain barrier (BBB) breakdown, resulting in the extravasation of blood proteins into the brain. The impact of blood proteins, especially fibrinogen, on inflammation and neurodegeneration post-TBI is not fully understood, highlighting a critical gap in our comprehension of TBI pathology and its connection to innate immune activation.
Methods: We combined vascular casting with 3D imaging of solvent-cleared organs (uDISCO) to study the spatial distribution of the blood coagulation protein fibrinogen in large, intact brain volumes and assessed the temporal regulation of the fibrin(ogen) deposition by immunohistochemistry in a murine model of TBI.
Theranostics
January 2024
Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Data Brief
February 2024
Department of Neuroscience, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
Multi-modal imaging, by light-microscopy (LM) and Magnetic Resonance Imaging (MRI), holds promise for examining the brain across various resolutions and scales. While MRI acquires images in three dimensions, acquisition of intact whole-brain by LM requires a process of tissue clearing that renders the brain transparent. Removal of lipids (delipidation) is a critical step in the tissue clearing process, and was previsouly suggested to be the cause for absence of MRI contrast in cleared brains.
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