論文

査読有り 責任著者 国際誌
2020年10月1日

Detection of invasive pulmonary aspergillosis in mice using lung perfusion single-photon emission computed tomography with [99mTc]MAA.

Medical mycology
  • Masataka Yoshida
  • Masato Tashiro
  • Kodai Nishi
  • Maki Mishima
  • Kei Kawano
  • Takahiro Takazono
  • Tomomi Saijo
  • Kazuko Yamamoto
  • Yoshifumi Imamura
  • Taiga Miyazaki
  • Takashi Kudo
  • Katsunori Yanagihara
  • Hiroshi Mukae
  • Koichi Izumikawa
  • 全て表示

58
7
開始ページ
965
終了ページ
972
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/mmy/myz131

There is an urgent need for development of better diagnostic strategies to improve outcomes in patients with invasive pulmonary aspergillosis (IPA). We hypothesized that lung perfusion single-photon emission computed tomography (SPECT) may be more sensitive and specific than computed tomography (CT) of the chest for detection of IPA because it is an angioinvasive pulmonary infection with characteristics that are different from those of bacterial pneumonia. We used SPECT with injection of technetium-99m-labeled macroaggregated albumin ([99mTc]MAA) to measure pulmonary perfusion in noninfected mice, mice with IPA, and mice with bacterial pneumonia. Histopathologic analysis was performed to evaluate the correlation between the perfusion defect and mould invasion. We also attempted to quantitatively evaluate the SPECT images to identify differences in decreased perfusion levels in affected areas in the mouse lung. Histopathologic analysis in the IPA mouse model showed a clear match between areas with a perfusion defect and the presence of mold, indicating that the location of the perfusion defect on a SPECT image reflects angioinvasion of the mould in the lungs. Some of these perfusion defects could be seen before appearance of the infiltrate of CT images. Quantitative analysis confirmed that perfusion in the affected areas was significantly decreased in the IPA model but not in the bacterial pneumonia model (P < .0001). This imaging method may be preferable to the alternative methods presently used to identify the presence of mold in a patient's lungs.

リンク情報
DOI
https://doi.org/10.1093/mmy/myz131
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/31943043
ID情報
  • DOI : 10.1093/mmy/myz131
  • PubMed ID : 31943043

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