• Natural Product Sciences
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• 제13권3호
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• pp.251-254
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• 2007

Dioxopiperazine alkaloids, 12R,13S-dihydroxyfumitremorgin C (1), fumitremorgin C (2), and brevianamide F (3), were isolated from the marine-derived fungus Pseudallescheria, and the absolute stereostructures of compounds 1 - 3 were elucidated on the basis of chemical and physicochemical evidence. Compounds 1 - 3 showed an antibacterial activity against Staphylococcus aureus, methicillin-resistant S. aureus, and multidrug-resistant S. aureus. The MIC (minimum inhibitory concentration) values of compounds 1 - 3 were 125 ${\mu}g/mL$ for all strains.

• Mycobiology
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• 제42권4호
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• pp.397-400
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• 2014

Pseudallescheria boydii KNU13-2 was isolated from crop field soil and identified by analysis of internal transcribed spacer regions of rDNA and morphological characteristics. In the literature, P. boydii has been mentioned as a human pathogen. This is the first record of P. boydii isolated from crop field soil in Korea.

• 한국미생물·생명공학회지
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• 제25권6호
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• pp.592-597
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• 1997

During the screening of inhibitors against phospholipase C (PLC) and the formation of inositol phosphates (IP$_{t}$) at NIH3T3${\gamma}$1 cells from microbial secondary metabolites, we selected a fungal strain MT60109 which was capable of producing an inhibitor. By the taxonomic studies, this fungus was identified as Pseudallescheria sp. MT60109 and an inhibitor of PLC was purified by BuOH extraction and chromatographic techniques from the culture broth of Pseudallescheria sp. MT60109. The inhibitor was identified as thielavin B by the physico-chemical properties and spectroscopic analysis of UV, FAB-MS, $^{1}$H, $^{13}$C-NMR, $^{1}$H-$^{1}$H COSY and HMBC. Thielavin B showed potent inhibitory activity against PLC purified from bovine brain with an IC$_{50}$ of 20 $\mu$M. And it also inhibited the formation of inositol phosphates in platelet-derived growth factor (PDGF) -stimulated NIH3T3${\gamma}$1 cells with an IC$_{50}$ of 20 $\mu$M.

• Tuberculosis and Respiratory Diseases
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• 제69권4호
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• pp.298-302
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• 2010

Scedosporium apiospermum, the anamorph of Pseudallescheria boydii, is a ubiquitous saprophytic fungus. S. apiospermum can cause life-threatening infections usually in immunocompromised patients or after near-drowning incidents. Here, we report the first case of disseminated infection caused by S. apiospermum after near-drowning in Korea. A 44-year-old healthy man developed aspiration pneumonia, followed by multiple brain abscesses, and endopthalmitis, after a near-drowning incident in a septic tank. S. apiospermum infection was diagnosed on the 33rd day after the incident had occurred. The patient died from the progressive renal failure 255 days after incident, although he had been treated with voriconazole.

• 대한미생물학회지
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• 제18권1호
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• pp.99-110
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• 1983

저자 등은 결핵으로 인해 생긴 공동을 가진 4명의 남자 환자에 있어서 성공적인 결핵화학요법으로 결핵은 치유되어 객담검사에서 결핵균은 더이상 검출되지 않았으나, 계속되는 각혈로 진균검사를 실시한 결과 Pseudallerscheria boydii(불완전세대 Scedosporium apiospermum)에 의한 진균종(眞菌腫)임이 밝혀졌다. 여러 차례의 객담검사로부터 6개월 또는 2년 이상 계속 동일한 균종이 불리 배양되었고 그리고 그들의 혈청은 P. boydii 배양여액 항원과 immunodiffusion test를 실시한 결과 precipitin bands를 형성하였다. 4환자의 흉부 X-선 사진상에는 뚜렷한 진균종음영을 볼 수 없었다. 2명의 환자 객담에서는 P. boydii와 더불어 Candida albicans와 Aspergillus fumigatus가 계속해서 분리 배양되었고 그리고 그들의 혈청에서 그러한 진균들의 항원에 대한 침강항체를 검충할 수 있었다. 3명의 환자는 폐기능이 진균종 제거수술을 허용하지 않았고 1명의 환자는 수술을 거부하였다.