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45 results on '"Yarita Kyoko"'

1. Multiple Scedosporium apiospermum abscesses in a woman survivor of a tsunami in northeastern Japan: a case report

Author

Nakamura Yutaka, Utsumi Yu, Suzuki Naomi, Nakajima Yoshio, Murata Okinori, Sasaki Nobuhito, Nitanai Hiroo, Nagashima Hiromi, Miyamoto Shinya, Yaegashi Jun, Hatakeyama Tomoki, Shibano Yoshihiro, Yarita Kyoko, Kamei Katsuhiko, Nakadate Toshihide, Endo Shigeatsu, Terayama Yasuo, and Yamauchi Kohei

Subjects
Medicine
Abstract

Abstract Introduction Scedosporium apiospermum is increasingly recognized as a cause of localized and disseminated mycotic infections in near-drowning victims. Case presentation We report the case of a 59-year-old Japanese woman who was a survivor of a tsunami in northeastern Japan and who had lung and brain abscesses caused by S. apiospermum. Initially, an aspergillus infection was suspected, so she was treated with micafungin. However, computed tomography scans of her chest revealed lung abscesses, and magnetic resonance images demonstrated multiple abscesses in her brain. S. apiospermum was cultured from her bronchoalveolar lavage fluid, and antimycotic therapy with voriconazole was initiated. Since she developed an increase in the frequency of premature ventricular contractions, an adverse drug reaction to the voriconazole was suspected. She was started on a treatment of a combination of low-dose voriconazole and liposomal amphotericin B. After combination therapy, further computed tomography scans of the chest and magnetic resonance images of her brain showed a demarcation of abscesses. Conclusions Voriconazole appeared to have a successful record in treating scedosporiosis after a near drowning but, owing to several adverse effects, may possibly not be recommended. Thus, a combination treatment of low-dose voriconazole and liposomal amphotericin B may be a safe and effective treatment for an S. apiospermum infection. Even though a diagnosis of scedosporiosis may be difficult, a fast and correct etiological diagnosis could improve the patient's chance of recovery in any case.

Published
2011
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13. Sinusitis caused by Exserohilum rostratum after cord blood transplantation for myelodysplastic syndrome: A case report and literature review

Author

Kohashi, Sumiko, primary, Toyama, Takaaki, additional, Hashimoto, Norisato, additional, Sakurai, Masatoshi, additional, Kato, Jun, additional, Kikuchi, Taku, additional, Koda, Yuya, additional, Sugita, Kayoko, additional, Hasegawa, Naoki, additional, Yarita, Kyoko, additional, Kamei, Katsuhiko, additional, Okamoto, Shinichiro, additional, and Mori, Takehiko, additional

Published
2017
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18. Sinusitis caused by <italic>Exserohilum rostratum</italic> after cord blood transplantation for myelodysplastic syndrome: A case report and literature review.

Author

Kohashi, Sumiko, Toyama, Takaaki, Hashimoto, Norisato, Sakurai, Masatoshi, Kato, Jun, Kikuchi, Taku, Koda, Yuya, Okamoto, Shinichiro, Mori, Takehiko, Sugita, Kayoko, Hasegawa, Naoki, Yarita, Kyoko, and Kamei, Katsuhiko

Subjects
SINUSITIS, EXSEROHILUM rostratum, CORD blood transplantation, MYELODYSPLASTIC syndromes treatment, NEUTROPENIA, DISEASE risk factors
Abstract

Abstract: Invasive fungal disease is a serious infectious complication of allogeneic hematopoietic stem cell transplantation (HSCT). Exserohilum rostratum is a species causing phaeohyphomycosis, which rarely causes invasive disease in humans. We treated a case of sinusitis caused by E. rostratum after cord blood transplantation (CBT). A 60‐year‐old man with myelodysplastic syndrome, who had a medical history of an operation to correct deviation of the nasal septum, developed sinusitis caused by E. rostratum under prolonged profound neutropenia after a second CBT because of the graft rejection of the first transplantation. Liposomal amphotericin B improved the sinusitis. A literature review revealed nine reported cases of sinusitis caused by E. rostratum, including our case. Although five cases had severe neutropenia at onset (HSCT recipients, n = 2; aplastic anemia, n = 3), the remaining four had no preexisting immunosuppressive conditions. However, three of the four patients had preexisting nasal diseases with or without a history of surgery, as in our case. Excluding our case, the outcome was fatal in five neutropenic patients, whereas the four patients without neutropenia recovered. Although sinusitis caused by E. rostratum is rare, E. rostratum should be recognized as a possible pathogen causing sinusitis in highly immunosuppressed patients such as HSCT recipients. Preexisting nasal disease and/or nasal surgery could be risks for this infection. [ABSTRACT FROM AUTHOR]

Published
2018
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21. Cryptococcus gattii genotype VGIIb infection in Japan

Author

Kawamura, Ichiro, primary, Kamei, Katsuhiko, additional, Yarita, Kyoko, additional, Ohkusu, Misako, additional, Ito, Kenta, additional, Tsukahara, Mika, additional, Honda, Masatake, additional, Nakashima, Kazuhisa, additional, Akamatsu, Hiroaki, additional, and Kurai, Hanako, additional

Published
2014
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37. An intrafamilial transmission of Arthroderma benhamiae in Canadian porcupines (Erethizon dorsatum) in a Japanese zoo.

Author

Takahashi, Hideo, Takahashi-kyuhachi, Hiroshi, Takahashi, Yoko, Yarita, Kyoko, Takayama, Akiko, Inomata, Tomo, Sano, Ayako, Nishimura, Kazuko, and Kamei, Katsuhiko

Abstract

An intra-familial transmission of Arthroderma benhamiae in Canadian porcupines (Erethizon dorsatum) housed in a Japanese zoo was studied. The family consisted of an adult couple and two offspring (a male and a female). The porcupettes, born in Japan, showed severe hair loss while the parent animals, imported from the USA. (male) and Canada (female), showed mild symptoms or were asymptomatic. Morphologically identical Tricophyton spp. isolates were recovered within seven days from quills of all animals on chloramphenicol-supplemented potato dextrose agar plates incubated at 37°C. Two representative colonies from each animal were identified as Arthroderma benhamiae Americano-European race based on mating type (+) and the internal transcribed spacer (ITS) 1-5.5S-ITS 2 region of the rRNA gene sequences (AB236404-AB236408). The present cases constituted the second isolation of dermatophytes from porcupines. There were two different ITS types, i.e., the predominant one isolated from all animals and a secondary one recovered from only the mother porcupine. The sequences have never been recorded in Japan or in the GenBank database to the best of our knowledge. In addition, they were located at a cluster involving the type strain and mating strains of A. benhamiae Americano-European race and its F1 progeny. In contrast, 28 rodents (eight species) and three insectivora (1 species) exhibited in the petting zoo were negative for any dermatophytes as determined by culture. [ABSTRACT FROM AUTHOR]

Published
2008
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38. Scedosporium aurantiacumbrain abscess after near-drowning in a survivor of a tsunami in Japan

Author

Nakamura, Yutaka, Suzuki, Naomi, Nakajima, Yoshio, Utsumi, Yu, Murata, Okinori, Nagashima, Hiromi, Saito, Heisuke, Sasaki, Nobuhito, Fujimura, Itaru, Ogino, Yoshinobu, Kato, Kanako, Terayama, Yasuo, Miyamoto, Shinya, Yarita, Kyoko, Kamei, Katsuhiko, Nakadate, Toshihide, Endo, Shigeatsu, Shibuya, Kazutoshi, and Yamauchi, Kohei

Abstract

Many victims of the tsunami that occurred following the Great East Japan Earthquake on March 11, 2011 developed systemic disorders owing to aspiration pneumonia. Herein, we report a case of tsunami lung wherein Scedosporium aurantiacumwas detected in the respiratory tract. A magnetic resonance image of the patient's head confirmed multiple brain abscesses and lateral right ventricle enlargement. In this case report, we describe a potential refractory multidrug-resistant infection following a tsunami disaster.

Published
2013
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39. Rapid and extensive vacuolation of the budding yeasts Saccharomyces cerevisiaeand Candida albicansby amphotericin B

Author

Guan, Hong-quan, Takeo, Kanji, Yarita, Kyoko, Yoshida, Soichi, Nishimura, Kazuko, and Miyaji, Makoto

Abstract

The effect of amphotericin B (AMPH) on vacuolation in the budding yeasts Saccharomyces cerevisiaeand Candida albicanswas studied. The minimum inhibitory concentration of AMPH for growth of S. cerevisiaeand C. aibicanswas 1μg/ml. In untreated control cultures, mature cells had large central vacuoles in the exponential phase, which hampered the detection of vacuolation effect. Small buds in untreated exponential phase cells, however, only rarely showed vacuoles under the light microscope. Treatment with 0.2μg/ml of AMPH for 20–30 min induced extensive vacuolation not only in mothers but also buds of S. cerevisiae.Extensive vacuolation lasted 4h or more, and growth rate of the cells was much reduced for 8h or more. Vacuolation itself was not fatal: on removal of the drug most cells gradually recovered from vacuolation and eventually multiplied. A similar effect of AMPH was also observed in C. albicansbut at a higher concentration (0.5μg/ml).

Published
1995
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42. Rapid, extensive and reversible vacuolation of Schizosaccharomyces pombe induced by amphotericin B

Author

Takeo, Kanji, Yarita, Kyoko, Yoshida, Soichi, Guan, Hong-quan, Nishimura, Kazuko, and Miyaji, Makoto

Abstract

The fission yeast Schizosaccharomyces pombe has no large vacuoles under normal growth conditions, although budding yeasts usually have large central vacuoles. The minimum inhibitory concentration of amphotericin B to S. pombe was 0.5 μg ml−1; treatment with 0.2 μg ml−1 for 20 min induced rapid and extensive vacuolation in S. pombe exponential phase cells. Growth rate of the cells with 0.2 μg ml−1 amphotericin B was much reduced for 6 h, showing extensive vacuolation. Vacuolation in itself was not fatal: on removal of the drug, most cells recovered gradually and eventually multiplied.

Published
1993
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44. Deep cutaneous infection with Microsphaeropsis arundinis: report of two Japanese cases.

Author

Asahina A, Kobayashi M, Nakano K, Saito I, Yarita K, Kamei K, and Tokura Y

Subjects
Aged, Antifungal Agents therapeutic use, Bacteriological Techniques, Biopsy, Combined Modality Therapy, Dermatomycoses diagnosis, Dermatomycoses therapy, Female, Humans, Hyperthermia, Induced, Middle Aged, Mitosporic Fungi drug effects, Predictive Value of Tests, Remission Induction, Skin drug effects, Skin pathology, Treatment Outcome, Dermatomycoses microbiology, Mitosporic Fungi isolation & purification, Skin microbiology
Published
2015
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45. Detection of the gp43 gene and (1-3)-beta-D-glucan of Paracoccidioides brasiliensis in the blood of experimentally infected mice.

Author

Nakagawa Itano E, Uno J, Sano A, Yarita K, Kamei K, Miyaji M, Nishimura K, and Mikami Y

Subjects
Adult, Aged, Animals, Antigens, Fungal, Biomarkers blood, Child, Diphosphates, Disease Models, Animal, Drug Combinations, Female, Humans, Male, Mice, Mice, Inbred Strains, Middle Aged, Nitrates, Polyethylenes, Polymerase Chain Reaction methods, Sodium Fluoride, Fungal Proteins, Genes, Fungal, Glucans blood, Glycoproteins genetics, Paracoccidioides genetics, Paracoccidioidomycosis diagnosis, beta-Glucans
Abstract

Paracoccidioidomycosis (PCM) is a deep mycosis caused by the thermo-dependent dimorphic fungus Paracoccidioides brasiliensis and is prevalent in Latin American countries. Diagnosis of PCM is sometimes difficult outside the endemic countries, thus a rapid and conclusive method for diagnosis of PCM has been anticipated. We compared the sensitivities of a nested PCR method for detecting the gp43 gene and a commercial kit for detecting (1-3)-beta-D-glucan in the blood of experimentally infected mice. Blood samples were collected from mice at 0 (soon after inoculation), 6, 12, 24, 48, and 72 hours and 5, 7, 10, 14, 17, 21, 24, 28 and 56 days after the intravenous inoculation of 10(6) yeast cells of P. brasiliensis, and were separated into clots and plasma. The (1-3)-beta-D-glucan detection kit in the plasma showed positive reactions in some samples within 7 days and 28 and 56 days after infections. In contrast, the PCR method was more sensitive than the (1-3)-beta-D-glucan detection kit throughout the observation period. The clot samples yielded more sensitive PCR-results than did the plasma samples. Although 24 hours is required for the PCR detection, it was confirmed to provide an accurate diagnosis of PCM.

Published
2002
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