Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method

Phase contrast microscopy (PCM) is a widely used analytical method for airborne asbestos, but it is unable to distinguish asbestos from non-asbestos fibers and requires time-consuming and laborious manual counting of fibers. Previously, we developed a high-throughput microscopy (HTM) method that cou...

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Main Authors: Jung Kyung Kim, Yeon Gyu Yu, Hwataik Han, Donghee Lee, Myoung-Ock Cho, Hyo Mi Chang
Format: Article
Language:English
Published: MDPI AG 2013-05-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/13/5/5686
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author Jung Kyung Kim
Yeon Gyu Yu
Hwataik Han
Donghee Lee
Myoung-Ock Cho
Hyo Mi Chang
author_facet Jung Kyung Kim
Yeon Gyu Yu
Hwataik Han
Donghee Lee
Myoung-Ock Cho
Hyo Mi Chang
author_sort Jung Kyung Kim
collection DOAJ
description Phase contrast microscopy (PCM) is a widely used analytical method for airborne asbestos, but it is unable to distinguish asbestos from non-asbestos fibers and requires time-consuming and laborious manual counting of fibers. Previously, we developed a high-throughput microscopy (HTM) method that could greatly reduce human intervention and analysis time through automated image acquisition and counting of fibers. In this study, we designed a dual-mode HTM (DM-HTM) device for the combined reflection and fluorescence imaging of asbestos, and automated a series of built-in image processing commands of ImageJ software to test its capabilities. We used DksA, a chrysotile-adhesive protein, for selective detection of chrysotile fibers in the mixed dust-free suspension of crysotile and amosite prepared in the laboratory. We demonstrate that fluorescently-stained chrysotile and total fibers can be identified and enumerated automatically in a high-throughput manner by the DM-HTM system. Combined with more advanced software that can correctly identify overlapping and branching fibers and distinguish between fibers and elongated dust particles, the DM-HTM method should enable fully automated counting of airborne asbestos.
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spelling doaj.art-44cc0e5376864e28af2abc91b391a0492022-12-22T02:57:57ZengMDPI AGSensors1424-82202013-05-011355686569910.3390/s130505686Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) MethodJung Kyung KimYeon Gyu YuHwataik HanDonghee LeeMyoung-Ock ChoHyo Mi ChangPhase contrast microscopy (PCM) is a widely used analytical method for airborne asbestos, but it is unable to distinguish asbestos from non-asbestos fibers and requires time-consuming and laborious manual counting of fibers. Previously, we developed a high-throughput microscopy (HTM) method that could greatly reduce human intervention and analysis time through automated image acquisition and counting of fibers. In this study, we designed a dual-mode HTM (DM-HTM) device for the combined reflection and fluorescence imaging of asbestos, and automated a series of built-in image processing commands of ImageJ software to test its capabilities. We used DksA, a chrysotile-adhesive protein, for selective detection of chrysotile fibers in the mixed dust-free suspension of crysotile and amosite prepared in the laboratory. We demonstrate that fluorescently-stained chrysotile and total fibers can be identified and enumerated automatically in a high-throughput manner by the DM-HTM system. Combined with more advanced software that can correctly identify overlapping and branching fibers and distinguish between fibers and elongated dust particles, the DM-HTM method should enable fully automated counting of airborne asbestos.http://www.mdpi.com/1424-8220/13/5/5686asbestoschrysotileDksAhigh-throughput microscopydual-mode imagingreflectionfluorescenceimage processing and analysisautomated counting
spellingShingle Jung Kyung Kim
Yeon Gyu Yu
Hwataik Han
Donghee Lee
Myoung-Ock Cho
Hyo Mi Chang
Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method
Sensors
asbestos
chrysotile
DksA
high-throughput microscopy
dual-mode imaging
reflection
fluorescence
image processing and analysis
automated counting
title Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method
title_full Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method
title_fullStr Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method
title_full_unstemmed Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method
title_short Selective Detection and Automated Counting of Fluorescently-Labeled Chrysotile Asbestos Using a Dual-Mode High-Throughput Microscopy (DM-HTM) Method
title_sort selective detection and automated counting of fluorescently labeled chrysotile asbestos using a dual mode high throughput microscopy dm htm method
topic asbestos
chrysotile
DksA
high-throughput microscopy
dual-mode imaging
reflection
fluorescence
image processing and analysis
automated counting
url http://www.mdpi.com/1424-8220/13/5/5686
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