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Affiliation(s)
- A Descloux
- École Polytechnique Fédérale de Lausanne, Laboratory of Nanoscale Biology, Lausanne, Switzerland.
| | - K S Grußmayer
- École Polytechnique Fédérale de Lausanne, Laboratory of Nanoscale Biology, Lausanne, Switzerland
| | - A Radenovic
- École Polytechnique Fédérale de Lausanne, Laboratory of Nanoscale Biology, Lausanne, Switzerland.
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Grußmayer KS, Geissbuehler S, Descloux A, Lukes T, Leutenegger M, Radenovic A, Lasser T. Spectral cross-cumulants for multicolor super-resolved SOFI imaging. Nat Commun 2020; 11:3023. [PMID: 32541869 PMCID: PMC7295763 DOI: 10.1038/s41467-020-16841-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 05/27/2020] [Indexed: 11/09/2022] Open
Abstract
Super-resolution optical fluctuation imaging provides a resolution beyond the diffraction limit by analysing stochastic fluorescence fluctuations with higher-order statistics. Using nth order spatio-temporal cross-cumulants the spatial resolution and the sampling can be increased up to n-fold in all spatial dimensions. In this study, we extend the cumulant analysis into the spectral domain and propose a multicolor super-resolution scheme. The simultaneous acquisition of two spectral channels followed by spectral cross-cumulant analysis and unmixing increases the spectral sampling. The number of discriminable fluorophore species is thus not limited to the number of physical detection channels. Using two color channels, we demonstrate spectral unmixing of three fluorophore species in simulations and experiments in fixed and live cells. Based on an eigenvalue/vector analysis, we propose a scheme for an optimized spectral filter choice. Overall, our methodology provides a route for easy-to-implement multicolor sub-diffraction imaging using standard microscopes while conserving the spatial super-resolution property.
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Affiliation(s)
- K S Grußmayer
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Laboratoire d'Optique Biomédicale, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
| | - S Geissbuehler
- Laboratoire d'Optique Biomédicale, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - A Descloux
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
- Laboratoire d'Optique Biomédicale, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - T Lukes
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
- Laboratoire d'Optique Biomédicale, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - M Leutenegger
- Laboratoire d'Optique Biomédicale, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
- Department of NanoBiophotonics, Max-Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077, Göttingen, Germany
| | - A Radenovic
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - T Lasser
- Laboratoire d'Optique Biomédicale, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Max-Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
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Descloux A, Grußmayer KS, Radenovic A. Parameter-free image resolution estimation based on decorrelation analysis. Nat Methods 2019; 16:918-924. [PMID: 31451766 DOI: 10.1038/s41592-019-0515-7] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 06/15/2019] [Indexed: 11/09/2022]
Abstract
Super-resolution microscopy opened diverse new avenues of research by overcoming the resolution limit imposed by diffraction. Exploitation of the fluorescent emission of individual fluorophores made it possible to reveal structures beyond the diffraction limit. To accurately determine the resolution achieved during imaging is challenging with existing metrics. Here, we propose a method for assessing the resolution of individual super-resolved images based on image partial phase autocorrelation. The algorithm is model-free and does not require any user-defined parameters. We demonstrate its performance on a wide variety of imaging modalities, including diffraction-limited techniques. Finally, we show how our method can be used to optimize image acquisition and post-processing in super-resolution microscopy.
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Affiliation(s)
- A Descloux
- École Polytechnique Fédérale de Lausanne, Laboratory of Nanoscale Biology, Lausanne, Switzerland.
| | - K S Grußmayer
- École Polytechnique Fédérale de Lausanne, Laboratory of Nanoscale Biology, Lausanne, Switzerland
| | - A Radenovic
- École Polytechnique Fédérale de Lausanne, Laboratory of Nanoscale Biology, Lausanne, Switzerland.
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Abstract
Even though the incidence of toxic epidermal necrolysis (TEN) is low, it is also associated with a high mortality rate. The condition predominantly affects the skin, but may also affect the gastrointestinal tract, dramatically increasing mortality. We present a case of perforated sigmoid diverticulitis in the presence of TEN. The patient was taking medication, known to be a risk factor, and presented an affected total body surface area and temporal development similar to previously reported cases of TEN. Characteristic abdominal symptoms, however, were missing. Gastrointestinal involvement in TEN appears to be a poor prognostic factor; medical staff must therefore be alert to patients with TEN who complain of abdominal discomfort. The exact pathogenesis, however, remains unclear.
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Affiliation(s)
- P Heye
- Department of Surgery, Kantonsspital Baden, Baden, Switzerland
| | - A Descloux
- Department of Surgery, Kantonsspital Baden, Baden, Switzerland
| | - G Singer
- Department of Pathology, Kantonsspital Baden, Baden, Switzerland
| | - R Rosenberg
- Department of Surgery, Kantonsspital Baden, Baden, Switzerland
| | - T Kocher
- Department of Surgery, Kantonsspital Baden, Baden, Switzerland
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Carey MB, Chen HT, Descloux A, Ingle JF, Park KI. 1982/83 End Office Connection Study: Analog Voice and Voiceband Data Transmission Performance Characterization of the Public Switched Network. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/j.1538-7305.1984.tb00088.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [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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Descloux A, Kocher T. [What is your diagnosis? Spontaneous umbilical rupture in decompensated liver cirrhosis]. Praxis (Bern 1994) 2012; 101:1471-1472. [PMID: 23147602 DOI: 10.1024/1661-8157/a001107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- A Descloux
- Klinik für Allgemein-, Viszeral- und Gefässchirurgie, Kantonsspital Baden.
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Descloux A. [Various considerations on "relational" medicine]. Z Krankenpfl 1966; 59:438-42. [PMID: 5178494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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P. JW, Descloux A. Delay Tables for Finite- and Infinite-Source Systems. J Am Stat Assoc 1963. [DOI: 10.2307/2282984] [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: 11/10/2022]
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