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Koga Y, Kitano A, Yamauchi H. [Treatment Strategy for HER2 Positive and HER2 Low Breast Cancer]. Gan To Kagaku Ryoho 2023; 50:749-755. [PMID: 37496215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Human epidermal growth factor receptor 2(HER2)positive breast cancer has been regarded as a poor prognosis breast cancer, but since the development of trastuzumab and various anti-HER2 drugs, the prognosis has significantly improved. Also, combining anti-HER2 drugs with chemotherapy as preoperative treatment, shows high ratings of pathological complete response(pCR). In terms of breast cancer, pCR is a prognosis predictive factor. As a result, in perioperative treatment for HER2 positive breast cancer, residual disease-guided approach which means to select postoperative treatment according to the response to preoperative chemotherapy has become the main stream. Furthermore, trastuzumab deruxtecan, which had been covered by insurance only for HER2 positive metastatic or recurrent breast cancer, was newly reimbursed for breast cancer with low HER2 expression at the end of March 2023, and the future movement is attracting attention.
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Affiliation(s)
- Yukiko Koga
- Dept. of Medical Oncology, St. Luke's International Hospital
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2
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Asano T, Wakabayashi T, Kondo Y, Okada K, Yamamuro D, Koga Y, Oka K, Sakurai M, Sawayama N, Takahashi M, Okazaki H, Ebihara K, Minami K, Morisawa Y, Hatakeyama S, Matsumura M, Ishibashi S. Serum 25-hydroxycholesterol levels are increased in patients with coronavirus disease 2019. J Clin Lipidol 2023; 17:78-86. [PMID: 36522261 PMCID: PMC9637049 DOI: 10.1016/j.jacl.2022.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND 25-hydroxycholesterol (25HC), produced by cholesterol 25-hydroxylase (CH25H) in macrophages, has been reported to inhibit the replication of viral pathogens such as severe acute respiratory syndrome coronavirus-2. Also, CH25H expression in macrophages is robustly induced by interferons (IFNs). OBJECTIVE To better understand the serum level increase of 25HC in coronavirus disease 2019 (COVID-19) and how it relates to the clinical picture. METHODS We measured the serum levels of 25HC and five other oxysterols in 17 hospitalized COVID-19 patients. RESULTS On admission, 25HC and 27-hydroxycholesterol (27HC) serum levels were elevated; however, 7-ketocholesterol (7KC) levels were lower in patients with COVID-19 than in the healthy controls. There was no significant correlation between 25HC serum levels and disease severity markers, such as interferon-gamma (IFN-γ) and interleukin 6. Dexamethasone effectively suppressed cholesterol 25-hydroxylase (CH25H) mRNA expression in RAW 264.7 cells, a murine leukemia macrophage cell line, with or without lipopolysaccharide or IFNs; therefore, it might mitigate the increasing effects of COVID-19 on the serum levels of 25HC. CONCLUSIONS Our results highlighted that 25HC could be used as a unique biomarker in severe COVID-19 and a potential therapeutic candidate for detecting the severity of COVID-19 and other infectious diseases.
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Affiliation(s)
- Takumi Asano
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Tetsuji Wakabayashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Yasuyuki Kondo
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Kenta Okada
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Daisuke Yamamuro
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Yukiko Koga
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Kiyonori Oka
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Momoe Sakurai
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Nagisa Sawayama
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Manabu Takahashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Hiroaki Okazaki
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Ken Ebihara
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi)
| | - Kensuke Minami
- Division of Infectious Diseases, Jichi Medical University Hospital, Shimotsuke, Tochigi, Japan (Drs Minami and Morisawa)
| | - Yuji Morisawa
- Division of Infectious Diseases, Jichi Medical University Hospital, Shimotsuke, Tochigi, Japan (Drs Minami and Morisawa)
| | - Shuji Hatakeyama
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Hatakeyama and Matsumura)
| | - Masami Matsumura
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Hatakeyama and Matsumura)
| | - Shun Ishibashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, Shimotsuke, Tochigi, Japan (Drs Asano, Wakabayashi, Kondo, Okada, Yamamuro, Koga, Oka, Sakurai, Sawayama, Takahashi, Okazaki, Ebihara and Ishibashi).
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Hori D, Kobayashi R, Nakazawa A, Iwafuchi H, Klapper W, Osumi T, Fujita N, Mitsui T, Koga Y, Mori T, Fukano R, Ohki K, Kamei M, Mori T, Tanaka M, Tsuchimochi T, Moriya K, Tao K, Kada A, Sekimizu M. NON-GERMINAL CENTER B-CELL SUBTYPE OF PEDIATRIC DISFFUSE LARGE B-CELL LYMPHOMA IN JAPAN: A MULTI-CASE ANALYSIS. Leuk Res 2022. [DOI: 10.1016/s0145-2126(22)00195-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ishii A, Nohara S, Yamamoto F, Tsuji H, Yatsuga S, Koga Y, Tamaoka A. P.53Potentially confounding variables of mitochondria biomarker GDF-15. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ishii A, Ishii A, Nohara S, Yanagiha K, Moriyama T, Tozaka N, Miyake Z, Okune S, Tsuji H, Tomidokoro Y, Nakamagoe K, Ishii K, Watanabe M, Tamaoka A, Yatsuga S, Koga Y. GDF-15 expression in multiple sclerosis and limbic encephalitis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ishii A, Yatsuga S, Koga Y, Tamaoka A. GDF-15 expression in mitochondrial and other neurological diseases. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yoshimi T, Koga Y, Nakamura A, Fujishita A, Kohara H, Moriuchi E, Yoshimi K, Tsai CY, Yoshida N. Mechanism of motor coordination of masseter and temporalis muscles for increased masticatory efficiency in mice. J Oral Rehabil 2017; 44:363-374. [PMID: 28181679 DOI: 10.1111/joor.12491] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2017] [Indexed: 11/28/2022]
Abstract
The demand for the use of mice as animal models for elucidating the pathophysiologies and pathogeneses of oral motor disorders has been increasing in recent years, as more and more kinds of genetically modified mice that express functional disorders of the stomatognathic system become available. However, the fundamental characteristics of mouse jaw movements during mastication have yet to be fully elucidated. The purpose of this study was to investigate the roles of the masseter and temporalis muscles, and the mechanisms of motor coordination of these muscles for increasing masticatory efficiency in the closing phase in mice. Twenty-two male Jcl:ICR mice were divided into control (n = 8), masseter-hypofunction (n = 7) and temporalis-hypofunction groups (n = 7). Botulinum neurotoxin type A (BoNT⁄A) was used to induce muscle hypofunction. The masticatory movement path in the horizontal direction during the occlusal phase became unstable after BoNT⁄A injection into the masseter muscle. BoNT⁄A injection into the temporalis muscle decreased antero-posterior excursion of the late-closing phase corresponding to the power phase of the chewing cycle. These results suggest that the masseter plays an important role in stabilizing the grinding path, where the food bolus is ground by sliding the posterior teeth from back to front during the occlusal phase. The temporalis plays a major role in retracting the mandible more posteriorly in the early phase of closing, extending the grinding path. Masticatory efficiency is thus increased based on the coordination of activities by the masseter and temporalis muscles.
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Affiliation(s)
- T Yoshimi
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Y Koga
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - A Nakamura
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - A Fujishita
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - H Kohara
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - E Moriuchi
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - K Yoshimi
- Yoshimi Skin Clinic, Nagasaki, Japan
| | - C Y Tsai
- Division of Orthodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
| | - N Yoshida
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Yamashita Y, Takahashi M, Koga Y, Saito R, Nanakawa S, Hatanaka Y, Sato N, Nakashima K, Urata J, Yoshizumi K, Ito K, Sumi S. Prognostic Factors in Liver Metastases after Transcatheter Arterial Embolization or Arterial Infusion. Acta Radiol 2016. [DOI: 10.1177/028418519003100308] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
From January 1986 to December 1988, 85 patients (55 men and 30 women, mean age 59 years) with metastatic liver tumors were treated with hepatic artery embolization (TAE) or infusion (HAI). Sixty-eight patients with successful catheterization were treated with TAE using iodized oil (Lipiodol) mixed with anticancer agent (ACA). In 12 of 68 patients with hypervascular tumors gelatin sponge was added. Patients with unsuccessful catheterization were treated with hepatic artery infusion of ACA. Forty-three patients received oral chemotherapy following TAE or HAI. Overall, the 6-month, and 1- and 2-year survival rates were 69.5, 31.8 and 4.1 per cent, respectively (mean 233 days). A univariate analysis of prognostic factors showed that number of metastases, stage, treatment times and oral chemotherapy were all significant factors (p<0.05). Ascites, jaundice, percentage of hepatic replacement and treatment protocol also had some influence (p<0.1). Sex, age, primary site, elevation of tumor markers, other metastatic lesions, portal vein involvement and difference in anticancer agent had no prognostic significance. A multivariate analysis using Cox's proportional hazard model revealed that the number of treatments had the most important prognostic significance, followed by oral chemotherapy, stage and percentage of hepatic replacement.
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Koga Y, Takahashi M, Kojima A, Takaki Y, Tomiguchi S, Hirota Y, Kugiyama K, Yasue H, Hayasaki K. Decreased Perfusion in Myocardial Region of Normal Donor Artery Secondary to Collateral Development. Acta Radiol 2016. [DOI: 10.1177/028418519203300103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Thirty-one patients suffering from single vessel exertional angina with collaterals (Group A) were evaluated by stress 201T1 myocardial emission CT (T1-SPECT) with 16 controls of severely stenotic single vessel exertional angina without collaterals (Group B). Group A included 21 patients (68%) who showed an extensive perfusion defect in double artery myocardial regions, including the normal donor artery myocardial region (DMR). However, there were no such cases in Group B, giving a significant difference between these 2 groups (p < 0.001). Four patients in Group A, having a perfusion defect both in DMR and in the collateral dependent myocardial region (CMR) underwent a successful percutaneous transluminal coronary angioplasty (PTCA) with disappearance of collaterals. T1-SPECT findings after PTCA showed no perfusion defect either in CMR or in DMR. This has been explained on the basis that the coronary collaterals stole blood and produced perfusion defect in DMR.
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10
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Edama M, Onishi H, Kubo M, Takabayashi T, Yokoyama E, Inai T, Watanabe H, Nashimoto S, Koga Y, Kageyama I. Gender differences of muscle and crural fascia origins in relation to the occurrence of medial tibial stress syndrome. Scand J Med Sci Sports 2015; 27:203-208. [PMID: 26662224 DOI: 10.1111/sms.12639] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2015] [Indexed: 11/27/2022]
Abstract
Although women reportedly have a higher prevalence of medial tibial stress syndrome (MTSS) than men, the possible role of gender-based anatomical differences has not been investigated. The aim of the present study was to investigate the presence of gender-based differences in the range of muscle attachments along the entire medial tibia, the proportion of muscle attachment at the middle and distal thirds of the medial margin of the tibia, the structure of the crural fascia, and chiasm position. The specimens were 100 legs of 55 Japanese cadavers. Statistical analysis was carried out using a chi-square test to compare anatomical features between the sexes. The flexor digitorum longus (FDL) had a higher proportion of attachment to the middle and distal thirds of the medial margin of the tibia than the soleus (SOL; P < 0.001). The proportion of the SOL attachment to the middle and distal thirds of the medial margin of the tibia was 33.3% in men and 72.5% in women (P < 0.001). The soleal aponeurosis was not observed in any specimen. In all specimens the FDL formed the top layer of both chiasms. These results suggest that the higher prevalence of MTSS reported among women may be the result of gender-based anatomical differences.
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Affiliation(s)
- M Edama
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan.,Department of Anatomy, School of Life Dentistry at Niigata, Nippon Dental University, Niigata, Japan
| | - H Onishi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - M Kubo
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - T Takabayashi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - E Yokoyama
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata, Japan
| | - T Inai
- Department of Rehabilitation, Oguma Orthopedics Clinic, Niigata, Japan
| | - H Watanabe
- Department of Rehabilitation, Sanjo General Hospital, Niigata, Japan
| | - S Nashimoto
- Department of Rehabilitation, Niigata Medical Center, Niigata, Japan
| | - Y Koga
- Department of Orthopaedic Surgery, Hokuetsu Hospital, Niigata, Japan
| | - I Kageyama
- Department of Anatomy, School of Life Dentistry at Niigata, Nippon Dental University, Niigata, Japan
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Yamamoto T, Sakakibara R, Uchiyama T, Fuse M, Yanagisawa M, Koga Y, Kuwabara S. Receiver operating characteristic analysis of sphincter electromyography and post-void residuals for multiple system atrophy. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Kono M, Satomi T, Hasegawa O, Abukawa H, Koga Y, Matsuo A, Chikazu D. Evaluation of OK-432 (Picibanil) injection therapy for intraoral ranula. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Kai M, Fujiwara M, Miyoshi M, Nishiyama Y, Aoyama-Ishikawa M, Maeshige N, Inoue T, Uemura M, Yamashita H, Koga Y, Usami M. SUN-PP039: Up-Regulation of Hepatic Ppara and Pparγ in Endotoxemic Rats by Feeding Lard-Rich High-Fat Diet for 12 Weeks. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30190-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nishiyama Y, Miyoshi M, Kai M, Aoyama-Ishikawa M, Maeshige N, Inoue T, Uemura M, Yamashita H, Koga Y, Usami M. SUN-PP074: Skeletal Muscle Atrophy is Induced at Early Phase in Endotoxemic Rats and Oral Administration of Tributyrin Attenuates the Atrophy. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30225-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sirilun S, Takahashi H, Boonyaritichaikij S, Chaiyasut C, Lertruangpanya P, Koga Y, Mikami K. Impact of maternal bifidobacteria and the mode of delivery on Bifidobacterium microbiota in infants. Benef Microbes 2015; 6:767-74. [PMID: 26322546 DOI: 10.3920/bm2014.0124] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The aim of this study is to examine the influence of maternal intestinal and vaginal bifidobacteria on the colonisation of bifidobacteria in the gut of infants. Faecal samples from 120 healthy pregnant mothers within 1 month of delivery and from their infants at 1 month of age and 98 vaginal swabs from the mothers at the time of delivery were collected at a maternity hospital in Chiang Mai, Thailand. The faecal and vaginal samples were assayed by real-time PCR assays to detect Bifidobacterium species and to estimate the bifidobacterial copy numbers. After adjusting for the numbers of each Bifidobacterium species, delivery mode, and antibiotic use in infants by the age of 1 month, total counts of bifidobacteria in the mothers' faeces were associated with increased copy numbers of bifidobacteria in the faeces of breastfed infants. A caesarean section was also significantly associated with a decrease in the copy numbers of bifidobacteria in the faeces of infants. No significant correlation was found between the bifidobacterial copies of the vaginal swabs and those of the infants' faeces. The intestinal bifidobacterial status of exclusively breastfed infants was significantly positive affected by vaginal delivery and high bifidobacterial copy numbers in their mothers' gut.
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Affiliation(s)
- S Sirilun
- 1 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep road, Suthep, Muang, 50200 Chiang Mai, Thailand
| | - H Takahashi
- 2 Laboratory for Infectious Diseases, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - S Boonyaritichaikij
- 3 Department of Family Medicine, Faculty of Medicine, Chiang Mai University, Suthep road, Suthep, Muang, 50200 Chiang Mai, Thailand
| | - C Chaiyasut
- 1 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep road, Suthep, Muang, 50200 Chiang Mai, Thailand
| | - P Lertruangpanya
- 4 Chiang Mai Health Promotion Hospital, Health Center Region 10th, Prachasamphan road, Changklan, Muang, 50100 Chiang Mai, Thailand
| | - Y Koga
- 2 Laboratory for Infectious Diseases, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - K Mikami
- 2 Laboratory for Infectious Diseases, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.,5 Department of Psychiatry, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
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Fujishita A, Koga Y, Utsumi D, Nakamura A, Yoshimi T, Yoshida N. Effects of feeding a soft diet and subsequent rehabilitation on the development of the masticatory function. J Oral Rehabil 2014; 42:266-74. [DOI: 10.1111/joor.12248] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A. Fujishita
- Department of Orthodontics and Dentofacial Orthopedics; Graduate school of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - Y. Koga
- Department of Orthodontics and Dentofacial Orthopedics; Graduate school of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - D. Utsumi
- Department of Orthodontics and Dentofacial Orthopedics; Graduate school of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - A. Nakamura
- Department of Orthodontics and Dentofacial Orthopedics; Graduate school of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - T. Yoshimi
- Department of Orthodontics and Dentofacial Orthopedics; Graduate school of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - N. Yoshida
- Department of Orthodontics and Dentofacial Orthopedics; Graduate school of Biomedical Sciences; Nagasaki University; Nagasaki Japan
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Mori S, Koga Y. AB0596 Glucocorticoid-Resistant Polymyalgia Rheumatica: Clinical Characterization and TOCILIZUMAB Therapy. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Cheng M, Angkawidjaja C, Koga Y, Kanaya S. Calcium-independent opening of lid1 of a family I.3 lipase by a single Asp to Arg mutation at the calcium-binding site. Protein Eng Des Sel 2014; 27:169-76. [DOI: 10.1093/protein/gzu009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Koga Y, Ueyama J, Sekimizu M, Mitsui T, Mori T, Fukano R, Gunma K, Osumi T, Mori T, Kikuchi A, Sunami S, Kobayashi R. Pediatric Hodgkin's Lymphoma in Japan. Klin Padiatr 2014. [DOI: 10.1055/s-0034-1371132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Harada M, Kuwahara R, Yoshida H, Hashimoto O, Sakamoto M, Koga Y, Kano T, Sata M. Dextromethorphan for neuropathic pain with Churg-Strauss syndrome. Mod Rheumatol 2014; 11:80-2. [PMID: 24387027 DOI: 10.3109/s101650170050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract A 48-year old man who had been treated with prednisolone, aminophylline, and pranlukast, a leukotriene-receptor antagonist, was diagnosed with Churg-Strauss syndrome based on the findings of asthma, eosinophilia, mononeuropathy, and extravascular eosinophils. Intractable neuropathic pain of the legs was successfully controlled with an N-methyl-d-aspartate receptor antagonist, dextromethorphan. We suggest that dextromethorphan receptor antagonists may be a useful treatment for the pain of neuropathy caused by vasculitis syndrome.
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Affiliation(s)
- M Harada
- Second Department of Medicine, Kurume University School of Medicine , 67 Asahi-machi, Kurume 830-0011 , Japan
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Nishino R, Mikami K, Takahashi H, Tomonaga S, Furuse M, Hiramoto T, Aiba Y, Koga Y, Sudo N. Commensal microbiota modulate murine behaviors in a strictly contamination-free environment confirmed by culture-based methods. Neurogastroenterol Motil 2013; 25:521-8. [PMID: 23480302 DOI: 10.1111/nmo.12110] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 02/05/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND There is increasing evidence suggesting the existence of an interaction between commensal microbiota, the gut and the brain. The aim of this study was to examine the influence of commensal microbiota on the host behaviors in a contamination-free environment, which was verified by culture-based methods. METHODS Open-field and marble-burying tests were used to analyze anxiety-like behaviors and locomotor activity in gnotobiotic BALB/c mice with a common genetic background in a sterile isolator. The monoamine levels in several regions of the brain were measured in germfree (GF) mice and commensal fecal microbiota-associated mice (EX-GF). KEY RESULTS A 24-h exposure to the environment outside the sterile isolators rendered GF mice less anxious than those not contaminated, while there was no change in the locomotion. EX-GF mice, the gnotobiotic mice with normal specific pathogen-free microbiota, were less anxious and active than GF mice using open-field and marble-burying tests. The norepinephrine, dopamine, and serotonin turnover rates were higher in the EX-GF mice than in the GF mice in most regions of the brain, suggesting that monoaminergic neurotransmission might increase in the EX-GF mice comparing the GF mice. Monoassociation with Brautia coccoides reduced the anxiety level, but it did not affect the locomotor activity. In contrast, colonization with Bifidobacterium infantis decreased the locomotor activity, while having little effect on the anxiety level. CONCLUSIONS & INFERENCES These results strongly support the current view that gut microorganisms modulate brain development and behavior.
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Affiliation(s)
- R Nishino
- Laboratory for Infectious Diseases, Isehara, Kanagawa, Japan.
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Kamide Y, Utsugi M, Dobashi K, Ono A, Ishizuka T, Hisada T, Koga Y, Uno K, Hamuro J, Mori M. Intracellular glutathione redox status in human dendritic cells regulates IL-27 production and T-cell polarization. Allergy 2011; 66:1183-92. [PMID: 21545428 DOI: 10.1111/j.1398-9995.2011.02611.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Glutathione redox status, changes in intracellular reduced (GSH) or oxidized (GSSG) glutathione, plays a significant role in various aspects of cellular function. In this study, we examined whether intracellular glutathione redox status in human dendritic cells (DCs) regulates the polarization of Th1/Th2 balance. METHODS Human monocyte-derived DCs (MD-DCs) treated with glutathione reduced form ethyl ester (GSH-OEt) or L-buthionine-(S,R)-sulfoximine (BSO) were stimulated by lipopolysaccharide (LPS), and the levels of polarization cytokines were measured. Next, DCs matured by LPS or thymic stromal lymphopoietin (TSLP) were cocultured with allogeneic CD4(+) naive T cells and Th1/Th2 balance was evaluated by cytokine production from the primed T cells. RESULTS Monocyte-derived DCs exposed to GSH-OEt and BSO had increased and decreased intracellular GSH contents, respectively. Lipopolysaccharide-induced interleukin (IL)-27 production was enhanced by GSH-OEt and suppressed by BSO, but neither GSH-OEt nor BSO affected the expression of HLA-DR, CD80, CD83, or CD86. Mature GSH-OEt-treated MD-DCs enhanced interferon (IFN)-γ production from CD4(+) T cells compared with nontreated MD-DCs, and small interfering RNA (siRNA) against IL-27 suppressed the effect of GSH-OEt on IFN-γ production. Additionally, although human myeloid DCs activated by TSLP (TSLP-DCs) prime naïve CD4(+) T cells to differentiate into Th2 cells, treatment of TSLP-DCs with GSH-OEt reduced IL-13 production and enhanced IFN-γ production by CD4(+) T cells. Interleukin-27 siRNA attenuated the inhibitory effect of GSH-OEt on Th2 polarization. CONCLUSION Our results reveal that Th1 and Th2 responses are controlled by intracellular glutathione redox status in DCs through IL-27 production.
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Affiliation(s)
- Y Kamide
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, Japan
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Yamagata Y, Koga Y, Hashikawa C, Inazato M, Chirifu M, Nakamura T, Ikemizu S, Nakabeppu Y. pH-dependent substrate recognition in human MTH1. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311079840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kito S, Hasegawa T, Koga Y. P14.16 Low-frequency right prefrontal transcranial magnetic stimulation in treatment-resistant depression and changes in regional cerebral blood flow. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60444-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hasegawa T, Kito S, Nakajima T, Yamadera H, Koga Y. P19.9 Changes in sleep architecture after repetitive transcranial magnetic stimulation in treatment-resistant depression. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60510-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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26
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Koga Y. Dancing with the Dead: Memory, Performance, and Everyday Life in Postwar Okinawa by Christopher Nelson. American Anthropologist 2011. [DOI: 10.1111/j.1548-1433.2011.01344_15.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kanaya E, Sakabe T, Nguyen NT, Koikeda S, Koga Y, Takano K, Kanaya S. Cloning of the RNase H genes from a metagenomic DNA library: identification of a new type 1 RNase H without a typical active-site motif. J Appl Microbiol 2011; 109:974-83. [PMID: 20408915 DOI: 10.1111/j.1365-2672.2010.04724.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS The study aimed to combine a metagenomics approach with complementary genetics to identify novel bacterial genes with orthologous functions, with the identification of novel RNase H genes as a test case. METHODS AND RESULTS A metagenomic DNA library was prepared from leaf-and-branch compost and used to screen for the RNase H genes by their abilities to complement the temperature-sensitive growth phenotype of the rnhA mutant Escherichia coli strain MIC3001. Determination of the nucleotide sequences of the cloned DNA fragments allowed us to identify 12 different genes encoding type 1 RNases H. Eleven of them encode novel RNases H, which show 40-72% amino acid sequence identities to those available from database. One of them lacks a typical DEDD/E active-site motif, which is almost fully conserved in various RNases H. CONCLUSIONS Functional screening of environmental DNA without cultivation of microbes is a useful procedure to isolate novel RNase H genes. SIGNIFICANCE AND IMPACT OF THE STUDY One of the identified RNase H genes had no sequence similarity to a previously assumed conserved motif, suggesting multiple catalytic mechanisms exist. This test case illustrates that metagenomics combined with complementary genetics can identify novel genes that are orthologous without sequence similarity to those from cultivated bacteria.
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Affiliation(s)
- E Kanaya
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Osaka, Japan.
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Kuwahara K, Angkawidjaja C, Koga Y, Takano K, Kanaya S. Importance of an extreme C-terminal motif of a family I.3 lipase for stability. Protein Eng Des Sel 2011; 24:411-8. [DOI: 10.1093/protein/gzq122] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hasegawa T, Kito S, Nakajima T, Yamadera H, Koga Y. P27-2 Sleep architecture changes after rTMS in treatment resistant depression. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61076-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Koga Y. S30-1 Overview: Further growth and development of electroencephalography. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60192-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nagano T, Yasunaga M, Goto K, Kenmotsu H, Koga Y, Kuroda J, Nishimura Y, Sugino T, Nishiwaki Y, Matsumura Y. Synergistic antitumor activity of the SN-38-incorporating polymeric micelles NK012 with S-1. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e13588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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32
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Koga Y. [Diagnosis and treatment of mitochondrial myopathy--update review]. No To Hattatsu 2010; 42:124-129. [PMID: 23858596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Koga Y, Katayama K, Povalko N, Nakamura H, Ohashi Y. 38 Investigator mediated Phase III open labeled l-arginine clinical trial to cure and prevent the stroke-like episodes in MELAS: Study design and outcome. Mitochondrion 2010. [DOI: 10.1016/j.mito.2009.12.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Foophow T, Tanaka S, Koga Y, Takano K, Kanaya S. Subtilisin-like serine protease from hyperthermophilic archaeon Thermococcus kodakaraensis with N- and C-terminal propeptides. Protein Eng Des Sel 2010; 23:347-55. [PMID: 20100702 DOI: 10.1093/protein/gzp092] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The genome of the hyperthermophilic archaeon Thermococcus kodakaraensis contains three genes encoding subtilisin-like serine proteases, Tk-1689, Tk-0076 and Tk-subtilisin. Of them, the structure and function of Tk-subtilisin have been extensively studied. To examine whether Tk-1689 is matured to an active form and functions as a hyperthermostable protease as is Tk-subtilisin, the gene encoding the Tk-1689 derivative without a putative N-terminal signal sequence, termed Pro-Tk-SP, was overexpressed in Escherichia coli. Pro-Tk-SP is composed of 640 amino acid residues and its molecular mass is 68.6 kDa. The recombinant protein was purified, however, as an active 44 kDa protease, termed Tk-SP, which lacks the N-terminal 113 and C-terminal 101 amino acid residues. This result suggests that Pro-Tk-SP consists of an N-terminal propeptide (Ala1-Ala113), a mature domain (Tk-SP, Val114-Val539) and a C-terminal propeptide (Asp540-Gly640). Like Tk-subtilisin, Tk-SP showed a broad substrate specificity and was highly thermostable. Its optimum temperature for activity was approximately 100 degrees C and its half-life at 100 degrees C was 100 min. It was fully resistant to treatment with 5% SDS, 8 M urea or 10% Triton X-100. However, unlike Tk-subtilisin and bacterial subtilisins, Tk-SP requires neither Ca2+ nor propeptide for folding. As a result, Tk-SP was fully active even in the presence of 10 mM EDTA. Thus, Tk-SP has a great advantage over other proteases in high resistance to heat, denaturants, detergents and chelating agents and therefore has great potential for application in biotechnology fields.
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Affiliation(s)
- T Foophow
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Shibata R, Kimura M, Takahashi H, Mikami K, Aiba Y, Takeda H, Koga Y. Clinical effects of kestose, a prebiotic oligosaccharide, on the treatment of atopic dermatitis in infants. Clin Exp Allergy 2009; 39:1397-403. [PMID: 19508323 DOI: 10.1111/j.1365-2222.2009.03295.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Koga Y, Yatsuga S, Akita Y, Nishioka J, Katayama K, Povalko N, Matsuishi T. Natural course of melas in Japanese cohort study. J Neurol Sci 2009. [DOI: 10.1016/j.jns.2009.02.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nagano T, Yasunaga M, Goto K, Koga Y, Kuroda J, Nishimura Y, Sugino T, Nishiwaki Y, Matsumura Y. Antitumor activity of NK012 combined with cisplatin against small-cell lung cancer and intestinal mucosal changes in tumor-bearing mouse after treatment. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e13522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e13522 Background: The novel SN-38-incorporating polymeric micelles NK012 has been shown to have significant antitumor activity against several cancer mouse models compared with CPT-11. The phase I study demonstrated that patients treated with NK012 did not develop grade 3/4 diarrhea, one of the major adverse effects of CPT-11. The aim of this study is to investigate the advantages of NK012 combined with cisplatin (cis-dichlorodiammineplatinum (II): CDDP) over CPT-11/CDDP, one of the most active regimens against small-cell and non-small-cell lung cancers in the clinic, in mice bearing a small-cell lung cancer (SCLC) xenograft in terms of antitumor activity and toxicity, particularly intestinal toxicity. Methods: Cytotoxic effects were evaluated in human SCLC cell lines (H69, H82, vascular endothelial growth factor [VEGF]-secreting cells, SBC-3/VEGF and its mock transfectant SBC-3/Neo). In vivo antitumor effects were evaluated in SBC-3/Neo-and SBC-3/VEGF-bearing mice after NK012/CDDP or CPT-11/CDDP administration on days 0, 7, and 14. Drug distribution was analyzed by high-performance liquid chromatography or fluorescence microscopy, and the small intestine was pathologically examined. Results: The in vitro growth inhibitory effects of NK012 were 198- to 532-fold more potent than those of CPT-11. A significant difference in the relative tumor volume on day 30 was found between NK012/CDDP and CPT- 11/CDDP treatments (P=0.0058). Inflammatory changes in the small intestinal mucosa were rare in all NK012-treated mice, but were commonly observed in CPT-11-treated mice. Moreover, a large amount of CPT-11 was excreted into the feces and high CPT-11 concentration was detected in the small intestinal epithelium. On the other hand, a small amount of NK012 was found in the feces and NK012 was weakly and uniformly distributed in the mucosal interstitium. Conclusions: NK012/CDDP combination may be a promising candidate regimen against lung cancer without severe diarrhea toxicity, and therefore warrants further clinical evaluation. No significant financial relationships to disclose.
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Affiliation(s)
- T. Nagano
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - M. Yasunaga
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - K. Goto
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Y. Koga
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - J. Kuroda
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Y. Nishimura
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - T. Sugino
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Y. Nishiwaki
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Y. Matsumura
- National Cancer Center Hospital East, Kashiwa, Japan; Kobe University Graduate School of Medicine, Kobe, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan
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Kuwahara K, Angkawidjaja C, Matsumura H, Koga Y, Takano K, Kanaya S. Importance of the Ca2+-binding sites in the N-catalytic domain of a family I.3 lipase for activity and stability. Protein Eng Des Sel 2008; 21:737-44. [DOI: 10.1093/protein/gzn057] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ishikawa Y, Murakami T, Saita Y, Takeda A, Ueno M, Koga Y. [Pulmonary atresia with intact ventricular septum showing Fontan-like circulation after biventricular repair]. Kyobu Geka 2008; 61:841-844. [PMID: 18788371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A 6-year-old girl was referred to our institute for cardiac evaluation. She had been diagnosed as pulmonary atresia with intact ventricular septum (PAIVS) at 16 days after birth and she had underwent balloon atrial septostomy and bilateral Blalock-Taussig shunts. A cardiac catheterization at 5 months showed that her right ventricular end diastolic volume was 58% of normal, the Z value (standard deviation units) of the diameter of the tricuspid valve was -3.3, and a biventricular repair was performed. After the operation, she suffered from severe congestive heart failure for 10 months. A cardiac catheterization at the age of 6 years demonstrated that the pulmonary blood flow was generated during the diastolic phase like Fontan circulation. Although biventricular repair had been performed at 5 months, the circulation may be less advantageous for long term survival than if the patient had undergone the staged Fontan procedure. Careful and continuous hemodynamic assessment is essential for surgical therapy of PAIVS.
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Affiliation(s)
- Y Ishikawa
- Department of Pediatrics, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
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Angkawidjaja C, You DJ, Matsumura H, Koga Y, Takano K, Kanaya S. Crystal structure of a family I.3 lipase from Pseudomonassp. MIS38 in a closed conformation. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308091861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Tanaka S, Matsumura H, Koga Y, Takano K, Kanaya S. Study on the Ca 2+-dependent maturation mechanism of subtilisin from a hyperthermophilic archaeon. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308091654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Ishikawa H, Tanaka K, Maeda Y, Aiba Y, Hata A, Tsuji NM, Koga Y, Matsumoto T. Effect of intestinal microbiota on the induction of regulatory CD25+ CD4+ T cells. Clin Exp Immunol 2008; 153:127-35. [PMID: 18460018 DOI: 10.1111/j.1365-2249.2008.03668.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
When oral tolerance was induced in either specific pathogen-free (SPF) or germ-free (GF) mice, ovalbumin (OVA) feeding before immunization induced oral tolerance successfully in SPF mice. On the other hand, OVA-specific immunoglobulin G1 (IgG1) and IgE titres in OVA-fed GF mice were comparable to those in phosphate-buffered saline-fed GF mice, thus demonstrating that oral tolerance could not be induced in GF mice. The frequencies of CD25(+) CD4(+)/CD4(+) cells in the mesenteric lymph node (MLN) and the absolute number of CD25(+) CD4(+) cells in the Peyer's patches and MLN of naive GF mice were significantly lower than those in naive SPF mice. In an in vitro assay, the CD25(+) CD4(+) cells from the naive SPF mice suppressed more effectively the proliferation of responder cells in a dose-dependent manner than those from the GF mice. In addition, the CD25(+) CD4(+) regulatory T (T(reg)) cells from the naive SPF mice produced higher amounts of interleukin (IL)-10 and transforming growth factor (TGF)-beta than those from the GF mice. When anti-TGF-beta neutralizing antibody, but not anti-IL-10 neutralizing antibody, was added to the in vitro proliferation assay, the suppressive effect of the CD25(+) CD4(+) T(reg) cells from the SPF mice was attenuated to the same level as that of the CD25(+) CD4(+) cells from the GF mice. In conclusion, the TGF-beta-producing CD25(+) CD4(+) T(reg) cells from the MLN of SPF mice played a major role in oral tolerance induction. In addition, as the regulatory function of the CD25(+) CD4(+) cells from the naive GF mice was much lower than that of the CD25(+) CD4(+) T(reg) cells from the SPF mice, indigenous microbiota are thus considered to contribute to the induction and maintenance of CD25(+) CD4(+) T(reg) cells.
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Affiliation(s)
- H Ishikawa
- Department of Microbiology, Tokyo Medical University, Tokyo, Japan
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Koga Y, Yao T, Hirahashi M, Kumashiro Y, Ohji Y, Yamada T, Tanaka M, Tsuneyoshi M. Flat adenoma-carcinoma sequence with high-malignancy potential as demonstrated by CD10 and beta-catenin expression: a different pathway from the polypoid adenoma-carcinoma sequence. Histopathology 2008; 52:569-77. [PMID: 18370954 DOI: 10.1111/j.1365-2559.2008.02996.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AIMS CD10+ colorectal carcinomas have a high risk of giving rise to liver metastasis. The aim was to examine phenotypic expression in colorectal neoplasia and to elucidate changes in such expression through the adenoma-carcinoma sequence. METHODS AND RESULTS We examined the expression of various proteins immunohistochemically in 111 flat [non-polypoid growth (NPG)] colorectal neoplasms, categorized into 28 low-grade (NPG-LGN), 44 high-grades (NPG-HGN) and 39 cases of invasive neoplasia (NPG-IN), as well as in 96 polypoid [polypoid growth (PG)] neoplasms, categorized into 26 PG-LGN, 39 PG-HGN and 31 PG-IN according to the Vienna classification. CD10 was more frequently expressed in NPG than in PG neoplasia. MUC2 and MUC5AC were more frequently expressed in PG than in NPG neoplasias. Nuclear beta-catenin was more frequently expressed in NPG-LGN than in PG-LGN. No difference in p53 expression was found between NPG and PG neoplasia. CONCLUSIONS From the viewpoint of the expression of CD10 and beta-catenin, it would appear that NPG-LGN differs significantly from PG-LGN, thereby indicating that NPG-LGN is a precursor of CD10+ carcinoma. It is important to ensure that NPG neoplasia is not overlooked if cases of CD10+ carcinoma are to be detected at an early stage.
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Affiliation(s)
- Y Koga
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Sanefuji K, Zeredo JL, Kurose M, Tanaka M, Koga Y, Yamada Y, Yoshida N. Possible effects of periodontal inputs on the masticatory function. ACTA ACUST UNITED AC 2008. [DOI: 10.7144/sgf.14.89] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Hayashi A, Komuro Y, Koga Y, Myckatyn TM, Yanai A. Corrigendum to: Hemi-orbicularis oculi switch flap for upper eyelid defects, JPRAS 2007, Vol. 60(6), pp. 655–658. J Plast Reconstr Aesthet Surg 2007. [DOI: 10.1016/j.bjps.2007.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
The Kirkwood-Buff integrals of some binary aqueous alcohol mixtures are computed from the available vapor pressure measurements and compared with previous results as well as small angle neutron scattering experiments. The emphasis of the present report is on accuracy of the results that can be achieved by these two different types of measurements. This seems to be needed, mainly in view of the discrepancies between the various published results, as shown herein. It is argued that agreement in peak positions is more important than that in magnitude. In general, very good agreement is obtained by both methods, and sources of disagreements are discussed. The issue of the computer simulations of aqueous systems and the problematics related to correlations, microheterogeneity, and consequently the Kirkwood-Buff integrals are equally discussed herein.
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Affiliation(s)
- A Perera
- Laboratoire de Physique Théorique des Liquides (UMR CNRS 1600), Université Pierre et Marie Curie, 4 Place Jussieu, F75252 Paris Cedex 05, France.
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D'Alessandro M, Coats SE, Morley SM, Mackintosh L, Tessari G, Turco A, Gerdes AM, Pichert G, Whittaker S, Brandrup F, Broesby-Olsen S, Gomez-Lira M, Girolomoni G, Maize JC, Feldman RJ, Kato N, Koga Y, Ferguson-Smith MA, Goudie DR, Lane EB. Multiple self-healing squamous epithelioma in different ethnic groups: more than a founder mutation disorder? J Invest Dermatol 2007; 127:2336-44. [PMID: 17554363 DOI: 10.1038/sj.jid.5700914] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Multiple self-healing squamous epithelioma (MSSE), also known as Ferguson-Smith Disease, is a rare cancer-associated genodermatosis with an autosomal dominant inheritance. Affected patients suffer from recurrent skin lesions, which clinically and histologically resemble keratoacanthomas or well-differentiated squamous cell carcinomas, but which, if left, undergo spontaneous regression, leaving pronounced scarring. The majority of MSSE cases previously described were of Scottish ancestry and all shared the same at-risk haplotype, suggesting that this disorder was caused by a founder mutation. The candidate locus for MSSE lies in a region of <4 cM in chromosome 9q22, between the markers D9S197 and D9S1809. We recently investigated MSSE families of non-Scottish origin. For every patient of these families, we obtained a detailed clinical history, with particular attention to the age of onset, distribution, and clinical course of their skin lesions. Once confirmed that they were really affected by MSSE, we performed haplotype analysis on them and their families. The haplotypes for polymorphic markers segregating with MSSE in non-Scottish and Scottish families differ, suggesting that MSSE is not caused by a founder mutation and might be more common than originally thought.
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Affiliation(s)
- Mariella D'Alessandro
- Cancer Research UK Cell Structure Research Group, Dundee University School of Life Sciences, Dundee, UK.
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Pulido MA, Koga Y, Takano K, Kanaya S. Directed evolution of Tk-subtilisin from a hyperthermophilic archaeon: identification of a single amino acid substitution responsible for low-temperature adaptation. Protein Eng Des Sel 2007; 20:143-53. [PMID: 17351019 DOI: 10.1093/protein/gzm006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tk-subtilisin from the hyperthermophilic archaeon Thermococcus kodakaraensis is synthesized in a prepro-form (prepro-Tk-subtilisin), secreted in a pro-form (pro-Tk-subtilisin), and matured to an active form (mat-Tk-subtilisin*; a Ca(2+)-bound active form of matured domain of Tk-subtilisin) upon autoprocessing and degradation of the propeptide [Tk-propeptide; propeptide of Tk-subtilisin (Gly1-Leu69)]. Pro-Tk-subtilisin exhibited halo-forming activity only at 80 degrees C, but not at 70 and 60 degrees C, because Tk-propeptide is not effectively degraded by mat-Tk-subtilisin* and forms an inactive complex with mat-Tk-subtilisin* at <80 degrees C. Random mutagenesis in the entire prepro-Tk-subtilisin gene, followed by screening for mutant proteins with halo-forming activity at 70 and 60 degrees C, allowed us to identify single Gly56 --> Ser mutation in the propeptide region responsible for low-temperature adaptation of pro-Tk-subtilisin. SDS-PAGE analyses and mat-Tk-subtilisin* activity assay of pro-G56S-subtilisin indicated more rapid maturation than pro-Tk-subtilisin. The resultant active form was indistinguishable from mat-Tk-subtilisin* in activity and stability, indicating that Gly56 --> Ser mutation does not seriously affect the folding of the mature domain. However, this mutation greatly destabilized the propeptide, making it unstructured in an isolated form. As a result, Tk-propeptide with Gly56 --> Ser mutation (G56S-propeptide) was more susceptible to proteolytic degradation and less effectively inhibited mat-Tk-subtilisin* activity than Tk-propeptide. These results suggest that pro-G56S-subtilisin is more effectively matured than pro-Tk-subtilisin at lower temperatures, because autoprocessed G56S-propeptide is unstructured upon dissociation from mat-Tk-subtilisin* and is therefore effectively degraded by mat-Tk-subtilisin*.
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Affiliation(s)
- M A Pulido
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Kakubari I, Dejima H, Miura K, Koga Y, Mizu H, Takayasu T, Yamauchi H, Takayama S, Takayama K. Determination of formoterol in rat plasma by liquid chromatography-electrospray ionisation mass spectrometry. Pharmazie 2007; 62:94-5. [PMID: 17341025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A sensitive method for the determination of formoterol in rat plasma is described, using high performance liquid chromatographic separation with tandem mass spectrometry. Samples were purified using liquid-liquid extraction and separated on CAPCELL PAK C18 UG120 (2.0 x 150 mm) with a mobile phase consisting of a mixture of methanol- 50 mM ammonium hydrogen carbonate (1:1 v/v). Detection was performed with a TSQ 7000 mass spectrometer using positive ion electrospray ionisation, monitoring the shift from precursor ions for formoterol at m/z 344.9 to product ions of m/z 121.0. The limit of quantitation of the method was found to be 0.1 ng/ml, when using 0.1 ml plasma. Plasma concentrations of formoterol could be quantified from 0.15 to 7.01 ng/ml, allowing the analysis of samples up to 32 h after a single oral dose of formoterol fumarate (0.25 mg) to rats.
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Affiliation(s)
- I Kakubari
- Research Department, Saitama Daiichi Pharmaceutical Co., Ltd., Kasukabe, Saitama, Japan.
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Hayashi A, Komuro Y, Koga Y, Myckatyn TM, Terence MM, Yanai A. Hemi-orbicularis oculi switch flap for upper eyelid defects. J Plast Reconstr Aesthet Surg 2007; 60:655-8. [PMID: 17485054 DOI: 10.1016/j.bjps.2006.11.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2006] [Revised: 07/31/2006] [Accepted: 11/20/2006] [Indexed: 11/29/2022]
Abstract
BACKGROUND The technique chosen to reconstruct anterior lamellar defects of the upper eyelid requires careful consideration. We modified pre-existing techniques used to reconstruct anterior lamellar defects after tumour resection and have called this procedure a hemi-orbicularis oculi switch flap. METHODS This musculocutaneous flap is elevated with underlying orbicularis and its base abuts the anterior lamellar defect. The flap, which is half the height of the defect, is elevated and inset to cover the defect. Then, taking into consideration the extensibility of upper eyelid skin, the remainder of the defect and the donor site are closed directly. RESULTS Five patients with basal cell carcinoma, haemangioma, and xanthoma of the upper eyelid were treated by this method. All flaps survived and complications were minimal. Aesthetically and functionally good results were obtained by this method. CONCLUSIONS We have developed a surgical method for the reconstruction of anterior lamellar defects of the upper eyelid. The proposed method is technically simple and safe and provides consistent results for a potentially wide variety of upper eyelid tumours.
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Affiliation(s)
- Ayato Hayashi
- Department of Plastic and Reconstructive Surgery, Juntendo Shizuoka Hospital, 1129 Nagaoka, Izunokuni City, Shizuoka, Japan.
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