Label-free imaging of acanthamoeba using multimodal nonlinear optical microscopy

Tsubasa Kobayashi, Yu Rok Cha, Yuichi Kaji, Tetsuro Oshika, Philippe Leproux, Vincent Couderc, Hideaki Kano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Acanthamoeba keratitis is a disease in which amoebae named Acanthamoeba invade the cornea of an eye. To diagnose this disease before it becomes serious, it is important to detect the cyst state of Acanthamoeba in the early stage of infection. In the present study, we explored spectroscopic signitures of the cyst state of Acanthamoeba using multimodal nonlinear optical microscopy with the channels of multiplex coherent anti-Stokes Raman scattering (CARS), second harmonic generation (SHG), and third harmonic generation (THG). A sharp band at around 1603 cm-1 in the CARS (Im[χ(3)]) spectrum was found at the cyst state of Acanthamoeba, which possibly originates from ergosterol and/or 7-dehydrostigmasterol. It can be used as a maker band of Acanthamoeba for medical treatment. Keyword: Acanthamoeba keratitis, coherent anti-Stokes Raman scattering, CARS, second harmonic generation, SHG, microspectroscopy, multiphoton microscopy.

Original languageEnglish
Title of host publicationMultiphoton Microscopy in the Biomedical Sciences XVIII
EditorsAmmasi Periasamy, Xiaoliang S. Xie, Xiaoliang S. Xie, Karsten Konig, Peter T. C. So
PublisherSPIE
ISBN (Electronic)9781510614819
DOIs
Publication statusPublished - 2018
Externally publishedYes
EventMultiphoton Microscopy in the Biomedical Sciences XVIII 2018 - San Francisco, United States
Duration: Jan 28 2018Jan 30 2018

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume10498
ISSN (Print)1605-7422

Conference

ConferenceMultiphoton Microscopy in the Biomedical Sciences XVIII 2018
CountryUnited States
CitySan Francisco
Period1/28/181/30/18

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

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