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Nimura Y, Madeda Y, Tamura E, Kouyama Y, Matsudaira S, Nakamura H, Misawa M, Miyachi H, Baba T, Mukai S, Sawada N, Ishida F, Nemoto T, Kudo SE. Gastrointestinal: Real-time observation of rectal malignant lymphoma using endocytoscopy for differentiation from adenocarcinoma. J Gastroenterol Hepatol 2023; 38:1456. [PMID: 36863707 DOI: 10.1111/jgh.16155] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/14/2023] [Accepted: 02/19/2023] [Indexed: 03/04/2023]
Affiliation(s)
- Y Nimura
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - Y Madeda
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - E Tamura
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - Y Kouyama
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - S Matsudaira
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - H Nakamura
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - M Misawa
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - H Miyachi
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - T Baba
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - S Mukai
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - N Sawada
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - F Ishida
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - T Nemoto
- Department of Diagnostic Pathology, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
| | - S-E Kudo
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Kanagawa, Japan
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Fuke N, Yamashita T, Shimizu S, Matsumoto M, Sawada K, Jung S, Tokuda I, Misawa M, Suzuki S, Ushida Y, Mikami T, Itoh K, Suganuma H. Association of Plasma Lipopolysaccharide-Binding Protein Concentration with Dietary Factors, Gut Microbiota, and Health Status in the Japanese General Adult Population: A Cross-Sectional Study. Metabolites 2023; 13:metabo13020250. [PMID: 36837869 PMCID: PMC9965710 DOI: 10.3390/metabo13020250] [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: 12/27/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
The influx of intestinal bacteria-derived lipopolysaccharide (LPS) into the blood has attracted attention as a cause of diseases. The aim of this study is investigating the associations between the influx of LPS, dietary factors, gut microbiota, and health status in the general adult population. Food/nutrient intake, gut microbiota, health status and plasma LPS-binding protein (LBP; LPS exposure indicator) were measured in 896 residents (58.1% female, mean age 54.7 years) of the rural Iwaki district of Japan, and each correlation was analyzed. As the results, plasma LBP concentration correlated with physical (right/left arms' muscle mass [β = -0.02, -0.03]), renal (plasma renin activity [β = 0.27], urine albumin creatinine ratio [β = 0.50]), adrenal cortical (cortisol [β = 0.14]), and thyroid function (free thyroxine [β = 0.05]), iron metabolism (serum iron [β = -0.14]), and markers of lifestyle-related diseases (all Qs < 0.20). Plasma LBP concentration were mainly negatively correlated with vegetables/their nutrients intake (all βs ≤ -0.004, Qs < 0.20). Plasma LBP concentration was positively correlated with the proportion of Prevotella (β = 0.32), Megamonas (β = 0.56), and Streptococcus (β = 0.65); and negatively correlated with Roseburia (β = -0.57) (all Qs < 0.20). Dietary factors correlated with plasma LBP concentration correlated with positively (all βs ≥ 0.07) or negatively (all βs ≤ -0.07) the proportion of these bacteria (all Qs < 0.20). Our results suggested that plasma LBP concentration in the Japanese general adult population was associated with various health issues, and that dietary habit was associated with plasma LBP concentration in relation to the intestinal bacteria.
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Affiliation(s)
- Nobuo Fuke
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
- Correspondence: ; Tel.: +81-80-1573-5815
| | - Takahiro Yamashita
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Sunao Shimizu
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
- Department of Vegetable Life Science, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Mai Matsumoto
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Kaori Sawada
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Songee Jung
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
- Department of Digital Nutrition and Health Sciences, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Itoyo Tokuda
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Mina Misawa
- Center of Innovation Research Initiatives Organization, Hirosaki University, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Shigenori Suzuki
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Yusuke Ushida
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
| | - Tatsuya Mikami
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Ken Itoh
- Department of Vegetable Life Science, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki 036-8562, Aomori, Japan
| | - Hiroyuki Suganuma
- Innovation Division, KAGOME Co., Ltd., 17 Nishitomiyama, Nasushiobara 329-2762, Tochigi, Japan
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Abstract
Abstract
The present paper describes the concept of a fast scanning Xray tomograph, the hardware development, and measurement results of gas-liquid two-phase flow in a vertical pipe. The device uses 18 pulsed X-ray sources activated in a successive order. In this way, a complete set of 18 independent projections of the object is obtained within 38 ms, i. e. the measuring rate is about 250 frames per second. Finally, to evaluate the measurement capability of the fast X-ray CT, a wire-mesh sensor was installed in the flow loop and both systems were operated for the same two-phase flow simultaneously. Comparison of the time series of the cross section averaged void fraction from both systems showed sufficient agreement for slug flow at large void fractions, while the fast CT underestimated the void fraction of bubbly flow especially in low void fraction range. For the wire-mesh sensor, coerced deformation of slug bubble interface was found. Further hardware improvement is in progress to achieve better resolution with the fast X-ray CT scanner.
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Affiliation(s)
- M. Misawa
- National Institute of Advanced Industrial Science and Technology , 1–2-1 Namiki, Tsukuba, Ibaraki, 305–8564 , Japan
| | - I. Tiseanu
- Institute of Atomic Physics, INFLPR Laboratory 22 , PO Box MG-36, Bucharest-Magurele, R-76900 , Romania
| | - H.-M. Prasser
- Forschungszentrum Rossendorf e.V , P.O. Box 51 01 19, D-01314 Dresden , Germany
| | - N. Ichikawa
- National Institute of Advanced Industrial Science and Technology , 1–2-1 Namiki, Tsukuba, Ibaraki, 305–8564 , Japan
| | - M. Akai
- National Institute of Advanced Industrial Science and Technology , 1–2-1 Namiki, Tsukuba, Ibaraki, 305–8564 , Japan
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Ozato N, Saitou S, Yamaguchi T, Katashima M, Misawa M, Jung S, Mori K, Kawada H, Katsuragi Y, Mikami T, Nakaji S. Association between Visceral Fat and Brain Structural Changes or Cognitive Function. Brain Sci 2021; 11:brainsci11081036. [PMID: 34439655 PMCID: PMC8391376 DOI: 10.3390/brainsci11081036] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 01/16/2023] Open
Abstract
Visceral fat accumulation is an independent risk factor for cardiovascular disease and mortality. Visceral fat is a causal risk factor for hypertension and type 2 diabetes, which was reported as one of the risk factors for dementia. Visceral fat areas (VFA) might be clinically important to prevent dementia; however, the association between VFA and cognitive function in the elderly remains unknown. We aimed to evaluate the association between brain structural abnormalities using magnetic resonance imaging (MRI) and VFA, and the association between cognitive function and VFA, in the elderly. A total of 2364 healthy individuals were enrolled, and we excluded those diagnosed with dementia. Participants were divided into a high-VFA and a low-VFA group based on median VFA. The high-VFA group had significantly lower cognitive function than the low-VFA group (p = 0.025), after adjustment for related factors using a linear regression model. Regarding brain structure in MRI, VFA remained significantly associated with white matter lesions (odds ratio (OR), 1.90; 95% confidence interval (1.33-2.70); adjusted p < 0.001) and perivascular space (OR, 1.28; 95% confidence interval (1.02-1.61); adjusted p = 0.033). Further follow-up studies are needed, but reducing visceral fat might be important, not only to prevent cardiovascular disease but also to prevent dementia.
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Affiliation(s)
- Naoki Ozato
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan; (M.K.); (K.M.); (Y.K.)
- Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan; (T.Y.); (H.K.)
- Correspondence: ; Tel.: +81-(0)172-39-5041
| | - Shinnichiro Saitou
- Biological Science Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan;
| | - Tohru Yamaguchi
- Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan; (T.Y.); (H.K.)
| | - Mitsuhiro Katashima
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan; (M.K.); (K.M.); (Y.K.)
- Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan; (T.Y.); (H.K.)
| | - Mina Misawa
- COI Research Initiatives Organization, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan; (M.M.); (S.J.)
| | - Songee Jung
- COI Research Initiatives Organization, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan; (M.M.); (S.J.)
| | - Kenta Mori
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan; (M.K.); (K.M.); (Y.K.)
- Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan; (T.Y.); (H.K.)
| | - Hiromitsu Kawada
- Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan; (T.Y.); (H.K.)
| | - Yoshihisa Katsuragi
- Department of Active Life Promotion Sciences, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan; (M.K.); (K.M.); (Y.K.)
- Health & Wellness Products Research Laboratories, Kao Corporation, Tokyo 131-8501, Japan; (T.Y.); (H.K.)
| | - Tatsuya Mikami
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki City 036-8562, Japan;
| | - Shigeyuki Nakaji
- Department of Social Medicine, Graduate School of Medicine, Hirosaki University, Hirosaki City 036-8562, Japan;
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Matsumoto M, Waki N, Suganuma H, Takahashi I, Kurauchi S, Sawada K, Tokuda I, Misawa M, Ando M, Itoh K, Ihara K, Nakaji S. Association between Biomarkers of Cardiovascular Diseases and the Blood Concentration of Carotenoids among the General Population without Apparent Illness. Nutrients 2020; 12:nu12082310. [PMID: 32752047 PMCID: PMC7469056 DOI: 10.3390/nu12082310] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 12/12/2022] Open
Abstract
Several studies have demonstrated that carotenoid-rich vegetables are useful against cardiovascular diseases (CVDs). However, it is still unclear when a healthy population should start eating these vegetables to prevent CVDs. In this study, we evaluated the role of carotenoids in CVD markers in healthy subjects using age-stratified analysis. We selected 1350 subjects with no history of apparent illness who were undergoing health examinations. We then evaluated the relationship between the serum concentrations of six major carotenoids as well as their total, and nine CVD markers (i.e., body mass index (BMI), pulse wave velocity (PWV), systolic blood pressure (SBP), diastolic blood pressure (DBP), Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), blood insulin, fasting blood glucose (FBG), triglycerides (TGs), and high-density lipoprotein (HDL) cholesterol) using multiple regression analysis. It was found that the total carotenoid level was significantly associated with seven markers other than BMI and FBG in males and with eight markers other than DBP in females. Many of these relationships were independent of lifestyle habits. Many significant relationships were found in young males (aged 20-39) and middle-aged females (aged 40-59). These findings can be used as lifestyle guidance for disease prevention although the causal relationships should be confirmed.
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Affiliation(s)
- Mai Matsumoto
- Innovation Division, KAGOME CO. LTD., 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan; (N.W.); (H.S.)
- Correspondence: ; Tel.: +81-80-1581-1874
| | - Naoko Waki
- Innovation Division, KAGOME CO. LTD., 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan; (N.W.); (H.S.)
| | - Hiroyuki Suganuma
- Innovation Division, KAGOME CO. LTD., 17 Nishitomiyama, Nasushiobara, Tochigi 329-2762, Japan; (N.W.); (H.S.)
| | - Ippei Takahashi
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Sizuka Kurauchi
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Kahori Sawada
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Itoyo Tokuda
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Mina Misawa
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Masataka Ando
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Ken Itoh
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Kazushige Ihara
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
| | - Shigeyuki Nakaji
- Graduate School of Medicine, Hirosaki University, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; (I.T.); (S.K.); (K.S.); (I.T.); (M.M.); (M.A.); (K.I.); (K.I.); (S.N.)
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Ota T, Misawa M, Miyamoto M, Takagi Y, Koide Y, Saito S. High flow nasal cannula oxygenation therapy enables intraoperative TOE at TAVI under MAC. J Cardiothorac Vasc Anesth 2018. [DOI: 10.1053/j.jvca.2018.08.036] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Matsuda K, Lopez JCA, Rehman S, Misawa M, Suzuki Y, Takeuchi A, Yasumoto M, Hibino K, Roy M, Hanayama R, Ishii K. Differential interference contrast microscopy for cells using hard x-ray holography. Appl Opt 2018; 57:4795-4801. [PMID: 30118100 DOI: 10.1364/ao.57.004795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Abstract
We propose a differential interference contrast method for cells using hard x-ray Gabor holography and knife-edge filtering in the spatial frequency domain, without relying on beam shearing. A phase object is holographically recorded and reconstructed by computer. Interference between the wavefronts of zeroth order weighted by ejπ/2 in the positive frequency region produces a dark image. Similarly, interference between the wavefronts of the zeroth order weighted by ej3π/2 in the negative frequency region produces a bright image. By adding these two intensity distributions, good quality phase-contrast images of 8-μm-diameter polystyrene beads and human HeLa cells were obtained.
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Hoshi K, Fujihara Y, Mori Y, Asawa Y, Kanazawa S, Nishizawa S, Misawa M, Numano T, Inoue H, Sakamoto T, Watanabe M, Komura M, Takato T. Production of three-dimensional tissue-engineered cartilage through mutual fusion of chondrocyte pellets. Int J Oral Maxillofac Surg 2016; 45:1177-85. [DOI: 10.1016/j.ijom.2016.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 08/07/2015] [Accepted: 03/02/2016] [Indexed: 10/21/2022]
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Matsunuma R, Asai N, Ohkuni Y, Nakashima K, Iwasaki T, Misawa M, Norihiro K. I-ROAD could be efficient in predicting severity of community-acquired pneumonia or healthcare-associated pneumonia. Singapore Med J 2015; 55:318-24. [PMID: 25017407 DOI: 10.11622/smedj.2014082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
INTRODUCTION The ability to predict the prognosis of patients with pneumonia is critical, especially when making decisions regarding treatment regimens and sites of care. However, prognostic guidelines for healthcare-associated pneumonia (HCAP) have yet to be established. I-ROAD is the prognostic guideline of the Japanese Respiratory Society for hospital-acquired pneumonia (HAP). This study compared available prognostic guidelines to determine the usefulness of I-ROAD as a prognostic tool for patients with HCAP. METHODS We conducted a retrospective review of all patients with pneumonia admitted to Kameda Medical Center, Japan, from January 2006 to September 2009. Patients were categorised into two groups, namely those with community acquired pneumonia (CAP) and those with HCAP. We compared the baseline characteristics, laboratory findings, identified pathogens, antibiotic regimens, clinical outcomes, pneumonic severity and prognostic accuracy of each guideline between the two patient groups. The severity of each disease was assessed on admission using the A-DROP, CURB-65, PSI and I-ROAD guidelines. RESULTS Of the 302 patients evaluated, 228 (75.5%) were diagnosed with CAP and 74 (24.5%) with HCAP. Patients with HCAP were older and had a higher performance status than patients with CAP. The mortality rate in the CAP group tended to rise with increasing severity scores of prognostic guidelines. Although the severity scores of all prognostic guidelines could predict 30-day mortality in patients with CAP, I-ROAD exhibited a higher discriminatory power for patients with HCAP based on analysis of receiver-operating characteristic curves. CONCLUSION I-ROAD could be more accurate than other prognostic guidelines for evaluating the severity of HCAP.
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Affiliation(s)
- R Matsunuma
- Department of Pulmonology, Kameda Medical Center, 929 Higashi-cho, Kamogawa City, Chiba Prefecture, Japan 296-8602.
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Souri M, Biswas A, Misawa M, Omura H, Ichinose A. Severe congenital factor XIII deficiency caused by novel W187X and G273V mutations in theF13Agene; diagnosis and classification according to the ISTH/SSC guidelines. Haemophilia 2013; 20:255-62. [DOI: 10.1111/hae.12298] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2013] [Indexed: 11/28/2022]
Affiliation(s)
- M. Souri
- Department of Molecular Patho-Biochemistry and Patho-Biology; Yamagata University School of Medicine; Yamagata Japan
| | - A. Biswas
- Institute of Experimental Hematology and Transfusion Medicine; University Clinic Bonn; Bonn Germany
| | - M. Misawa
- Department of Medicine (Hematology); Ako Central Hospital; Ako Japan
| | - H. Omura
- Department of Medicine (Hematology); Tottori Prefectural Central Hospital; Tottori Japan
| | - A. Ichinose
- Department of Molecular Patho-Biochemistry and Patho-Biology; Yamagata University School of Medicine; Yamagata Japan
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Misawa M, Yamamura F, Mori Y, Sugihara Y, Wada Y, Wakamura K, Hayashi T, Miyachi H, Kudo SE. A Case of an Esophageal Cancer Patient Surviving for Over 4 Years After Chemoradiotherapy and Subsequent Chemotherapy. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.59] [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: 11/13/2022] Open
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Nitta N, Aoki T, Hyodo K, Misawa M, Homma K. Direct measurement of speed of sound in cartilage in situ using ultrasound and magnetic resonance images. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:6063-6. [PMID: 24111122 DOI: 10.1109/embc.2013.6610935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This study verified the accuracy of the speed of sound (SOS) measured by the combination method, which calculates the ratio between the thickness values of cartilage measured by using the magnetic resonance imaging (MRI) and the ultrasonic pulse-echo imaging, and investigated in vivo application of this method. SOS specific to an ultrasound imaging device was used as a reference value to calculate the actual SOS from the ratio of cartilage thicknesses obtained from MR and ultrasound images. The accuracy of the thickness measurement was verified by comparing results obtained using MRI and a non-contact laser, and the accuracy of the calculated SOS was confirmed by comparing results of the pulse-echo and transmission methods in vitro. The difference between laser and MRI measurements was 0.05 ± 0.22 mm. SOS values in a human knee measured by the combination method in the medial and lateral femoral condyles were 1650 ± 79 and 1642 ± 78 m/s, respectively (p < 0.05). The results revealed the feasibility of in situ SOS measurement using the combination method.
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Mori Y, Kudo S, Ikehara N, Wakamura K, Wada Y, Kutsukawa M, Misawa M, Kudo T, Kobayashi Y, Miyachi H, Yamamura F, Ohtsuka K, Inoue H, Hamatani S. Comprehensive diagnostic ability of endocytoscopy compared with biopsy for colorectal neoplasms: a prospective randomized noninferiority trial. Endoscopy 2013; 45:98-105. [PMID: 23307149 DOI: 10.1055/s-0032-1325932] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [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] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND STUDY AIMS Endocytoscopy enables observation at 450-fold magnification during gastrointestinal endoscopy, allowing on-site "optical biopsy." We compared the accuracies of endocytoscopy and standard biopsy for the diagnosis of colorectal neoplasms. PATIENTS AND METHODS We performed a randomized, controlled, open-label trial of patients with colorectal lesions (≥ 5 mm) detected during colonoscopy in a tertiary referral center. We randomly assigned the 203 detected lesions of 170 eligible patients to either the endocytoscopy or standard biopsy group. An on-site endoscopist assessed the histopathology of the endocytoscopy group lesions according to the endocytoscopic findings, whereas a pathologist later assessed standard biopsy group lesions by microscopic examination of the biopsy specimens. We calculated the diagnostic accuracies in both groups with reference to the final histopathology of the resected specimens. The primary endpoint was to determine whether the diagnostic accuracy of endocytoscopy for neoplastic lesions was noninferior to that of standard biopsy (with a predefined noninferiority margin of 10%). Analyses were by intention-to-treat and per-protocol. The study is registered, number UMIN000003923. RESULTS Overall, 102 lesions in the endocytoscopy group and 101 in the standard biopsy group were available for primary outcome analysis. There were no complications. The diagnostic accuracy of endocytoscopy for the discrimination of neoplastic lesions was 94.1% (95% confidence interval 87.6% to 97.8%), whereas that of standard biopsy was 96.0% (90.2% to 98.9%), which is within the noninferiority margin (absolute difference -1.9%, -8.6% to +5.0%). CONCLUSIONS Endocytoscopy is noninferior to standard biopsy for the discrimination of neoplastic lesions. With its advantage of providing an on-site diagnosis, endocytoscopy could provide a novel alternative to standard biopsy in routine colonoscopy.
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Affiliation(s)
- Y Mori
- Digestive Disease Center, Showa University, Northern Yokohama Hospital, Yokohama, Japan
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Maselli R, Inoue H, Misawa M, Ikeda H, Hosoya T, Onimaru M, Yoshida A, Eleftheriadis N, Suzuki K, Kudo S. Peroral endoscopic myotomy (POEM) in a 3-year-old girl with severe growth retardation, achalasia, and Down syndrome. Endoscopy 2013; 44 Suppl 2 UCTN:E285-7. [PMID: 22933258 DOI: 10.1055/s-0032-1309924] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- R Maselli
- Digestive Disease Center, Showa University Northern Yokohama Hospital, Tsuzuki-ku, Yokohama, Japan.
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15
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Saigo K, Takenokuchi M, Hiramatsu Y, Tada H, Hishita T, Takata M, Misawa M, Imoto S, Imashuku S. Oxidative Stress Levels in Myelodysplastic Syndrome Patients: Their Relationship to Serum Ferritin and Haemoglobin Values. J Int Med Res 2011; 39:1941-5. [DOI: 10.1177/147323001103900539] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Reactive oxygen species (ROS) and serum ferritin levels are both considered to be important biological factors in the pathogenesis of myelodysplastic syndrome (MDS). This study evaluated the levels of ROS in 40 patients with MDS (19 males and 21 females) using the Free Radical Analytical System, FRAS4, and derivatives of reactive oxygen metabolite kits. The patients' mean age was 67.3 years (range 58–86 years). The sera of 34 (85%) patients exhibited higher levels of oxidative stress than the reference range. There was a positive correlation between ROS levels and serum ferritin levels, and a negative correlation between ROS levels and haemoglobin levels. There was a negative relationship between serum haemoglobin and ferritin levels. The results indicated that iron accumulation or severe anaemia could contribute to oxidative stress in MDS patients. Iron chelation and antioxidant therapy may be suitable for the management of MDS.
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Affiliation(s)
- K Saigo
- Faculty of Pharmacological Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | - M Takenokuchi
- Faculty of Pharmacological Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | - Y Hiramatsu
- Department of Haematology and Oncology, Himeji Red Cross Hospital, Himeji, Hyogo, Japan
| | - H Tada
- Department of Haematology and Oncology, Himeji Red Cross Hospital, Himeji, Hyogo, Japan
| | - T Hishita
- Department of Haematology, Himeji Medical Centre, Himeji, Hyogo, Japan
| | - M Takata
- Department of Medicine, Kakogawa Municipal Hospital, Kakogawa, Hyogo, Japan
| | - M Misawa
- Department of Haematology, Akoh Central Hospital, Akoh, Hyogo, Japan
| | - S Imoto
- Faculty of Health Science, Kobe Tokiwa University, Kobe, Hyogo, Japan
| | - S Imashuku
- Department of Paediatrics, Takasago Seibu Hospital, Takasago, Hyogo, Japan
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Chiba Y, Sato S, Misawa M. GGTI-2133, an inhibitor of geranylgeranyltransferase, inhibits infiltration of inflammatory cells into airways in mouse experimental asthma. Int J Immunopathol Pharmacol 2010; 22:929-35. [PMID: 20074456 DOI: 10.1177/039463200902200408] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Statins have been proposed as a novel treatment of respiratory diseases including asthma. Although the mechanism of anti-inflammatory effect of statins is still unclear, an inhibition of protein prenylation by depleting the downstream metabolites of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase might be involved. To test the hypothesis, the effects of GGTI-2133, a direct inhibitor of geran ylgeranyltransferase (GGTase), on antigen-induced airway inflammation were investigated in a murine model of allergic bronchial asthma. Mice were sensitized and repeatedly challenged with ovalbumin antigen (OA). Animals were also treated with GGTI-2133 (5 mg/kg/day, i.p.) once a day before and during the antigen inhalation period. Repeated antigen inhalation caused an infiltration of inflammatory cells, especially eosinophils, into airways. Significant increases in interleukin (IL)-4, IL-13, eotaxin, thymus and activation-regulated chemokine (TARC) and leukotriene B4 (LTB4) in bronchoalveolar lavage fluids and total and OA-specific IgE in sera were also found in the antigen-exposed animals. The systemic treatments with GGTI-2133 inhibited the antigen-induced eosinophil infiltration into airways almost completely. However, interestingly, the GGTI-2133 treatment did not affect the levels of these chemotactic factors and IgE. These findings suggest that selective inhibition of GGTase is effective for eosinophilic airway inflammation such as asthma.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan.
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17
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Misawa M, Nakajima J, Kobayashi M, Kawasoe H. Selection of tested component to predict dynamic properties of large structures by component modal tests. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100615003] [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: 11/14/2022] Open
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Chiba Y, Sato S, Misawa M. Lovastatin inhibits antigen-induced airway eosinophilia without affecting the production of inflammatory mediators in mice. Inflamm Res 2009; 58:363-9. [PMID: 19418204 DOI: 10.1007/s00011-009-0043-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2008] [Revised: 03/02/2009] [Accepted: 04/09/2009] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVE AND DESIGN Statins have been proposed as a novel treatment of respiratory diseases. To determine the beneficial effects of statins on allergic bronchial asthma, the effect of systemic treatment with lovastatin on antigen-induced airway inflammation was investigated. SUBJECTS Male BALB/c mice were used. TREATMENTS Mice were sensitized and repeatedly challenged with ovalbumin (OA) antigen to induce asthmatic response. Animals were also treated with lovastatin (4 mg/kg/day, i.p.) once a day prior to and during the antigen inhalation period. METHODS Inflammatory cell counts and levels of interleukin (IL)-4, IL-13, eotaxin, thymus and activation-regulated chemokine and leukotriene B(4) (LTB(4)) in bronchoalveolar lavage (BAL) fluids were measured. RESULTS Significant increases in eosinophils and levels of the T helper 2 cytokines, chemokines and LTB(4) in BAL fluids in association with the increments of total and OA-specific immunoglobulin E (IgE) in sera were observed in the repeatedly antigen-challenged mice. The airway eosinophilia was ameliorated by lovastatin, whereas it had no significant effect on the levels of these inflammatory mediators or IgE. CONCLUSION Lovastatin may be beneficial for the treatment of allergic inflammatory diseases in the airways, such as allergic bronchial asthma.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Misawa M, Sato T, Onozuka A, Maruyama K, Mori K, Suzuki S, Otomo T. A visualized analysis of small-angle neutron scattering intensity: concentration fluctuation in alcohol–water mixtures. J Appl Crystallogr 2007. [DOI: 10.1107/s0021889807001549] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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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20
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Ichikawa K, Kameda Y, Yamaguchi T, Wakita H, Misawa M. Neutron-diffraction investigation of the intramolecular structure of a water molecule in the liquid phase at high temperatures. Mol Phys 2006. [DOI: 10.1080/00268979100101071] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- K. Ichikawa
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , 060 , Japan
| | - Y. Kameda
- a Department of Chemistry, Faculty of Science , Hokkaido University , Sapporo , 060 , Japan
- d Department of Chemistry, Faculty of Science , Yamagata University , Yamagata , 990 , Japan
| | - T. Yamaguchi
- b Department of Chemistry , Fukuoka University , Nanakuma, Jonan-ku, Fukuoka , 814-01 , Japan
| | - H. Wakita
- b Department of Chemistry , Fukuoka University , Nanakuma, Jonan-ku, Fukuoka , 814-01 , Japan
| | - M. Misawa
- c National Laboratory for High Energy Physics , Oho. Tsukuba , 305 , Japan
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21
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Misawa M, Inamura Y, Hosaka D, Yamamuro O. Hydration of alcohol clusters in 1-propanol-water mixture studied by quasielastic neutron scattering and an interpretation of anomalous excess partial molar volume. J Chem Phys 2006; 125:074502. [PMID: 16942346 DOI: 10.1063/1.2241149] [Citation(s) in RCA: 19] [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: 11/14/2022] Open
Abstract
Quasielastic neutron scattering measurements have been made for 1-propanol-water mixtures in a range of alcohol concentration from 0.0 to 0.167 in mole fraction at 25 degrees C. Fraction alpha of water molecules hydrated to fractal surface of alcohol clusters in 1-propanol-water mixture was obtained as a function of alcohol concentration. Average hydration number N(ws) of 1-propanol molecule is derived from the value of alpha as a function of alcohol concentration. By extrapolating N(ws) to infinite dilution, we obtain values of 12-13 as hydration number of isolated 1-propanol molecule. A simple interpretation of structural origin of anomalous excess partial molar volume of water is proposed and as a result a simple equation for the excess partial molar volume is deduced in terms of alpha. Calculated values of the excess partial molar volumes of water and 1-propanol and the excess molar volume of the mixture are in good agreement with experimental values.
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Affiliation(s)
- M Misawa
- Institute of Science and Technology, Niigata University, Niigata 950-2181, Japan.
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22
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Chiba Y, Ueno A, Sakai H, Misawa M. Hyperresponsiveness of bronchial but not tracheal smooth muscle in a murine model of allergic bronchial asthma. Inflamm Res 2005; 53:636-42. [PMID: 15693613 DOI: 10.1007/s00011-004-1305-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To determine a change in airway smooth muscle contractility in a murine model of allergic asthma, the responsiveness of airway smooth muscles isolated from ovalbumin (OA)-sensitized and -challenged mice was compared with that from control animals. METHODS Actively sensitized mice were repeatedly challenged by ovalbumin (OA) antigen inhalation. Twenty-four h after the last antigen challenge, tracheal and bronchial smooth muscle responsiveness to acetylcholine (ACh) and endothelin-1 (ET-1) were measured. Airway microvascular leakage and histochemistry were also determined as indices of airway inflammation. RESULTS Both the ACh and ET-1 responsiveness of bronchial, but not tracheal, smooth muscles were significantly augmented in OA-challenged mice, whereas no significant change in the expression levels of M2, M3 and ETB receptors was observed. The Evans blue dye extravasation in the main bronchial, but not tracheal, tissue of OA-challenged mice was significantly increased as compared with that of sensitized control animals. A marked inflammatory cells infiltration was also observed in bronchial but not tracheal tissues of OA-challenged mice. CONCLUSION Repeated antigen challenge to sensitized mice caused a hyperresponsiveness of bronchial, but not tracheal, smooth muscle accompanied with bronchial tissue inflammation.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Iwadate Y, Tani Y, Fukushima K, Misawa M, Fukunaga T, Itoh K, Nakazawa T. Pulsed Neutron Diffraction of Phosphorous Acid and its Aqueous Solution with Inactivation Capability of Activated Oxygen. Journal of Neutron Research 2005. [DOI: 10.1080/10238160412331299582] [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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24
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Misawa M, Dairoku I, Honma A, Yamada Y, Sato T, Maruyama K, Mori K, Suzuki S, Otomo T. Observation of Mesoscale Structure of 1-propanol Aqueous Solution and its Visualization. Journal of Neutron Research 2005. [DOI: 10.1080/10238160412331297872] [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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25
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Misawa M, Dairoku I, Honma A, Yamada Y, Sato T, Maruyama K, Mori K, Suzuki S, Otomo T. Mass-fractal clustering and power-law decay of cluster size in 1-propanol aqueous solution. J Chem Phys 2004; 121:4716-23. [PMID: 15332905 DOI: 10.1063/1.1780931] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [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
Mesoscale structure of 1-propanol aqueous solutions with propanol mole fraction xp ranging from 0.1 to 0.33 has been studied by means of small angle neutron scattering (SANS) and large-scale reverse Monte Carlo (RMC) technique. Analysis of the SANS intensities in terms of a fractal model shows that the fractal dimension df of mesoscale structure of the solution is about 1.8-1.9 for water-rich solution and about 1.5 for propanol-rich solution. Percolation analysis on the RMC results reveals that the water molecules and the propanol molecules cluster, respectively, as a mass fractal, the dimension dM of which is about 2.3-2.5 for both clusters for water-rich solution. Furthermore, the distribution of the cluster size is expressed by a simple power law with an exponent tau of about 1.35-1.5 for the propanol clusters and 1.05-1.2 for the water clusters. These results imply that the current solution is characterized by polydisperse mass fractals. In fact, a theoretical relation for polydisperse system of mass fractals, df = dM(2-tau), holds well in the current solution. The characteristic change in df from 1.8-1.9 to 1.5 described above is attributed to the crossover between the water-rich regime and the propanol-rich regime. Most of the water molecules and the propanol molecules are located on the interface between clusters, and the water molecules form thin layers of about 10 A thick irrespective of 1-propanol content studied.
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Affiliation(s)
- M Misawa
- Department of Chemistry, Faculty of Science, Niigata University, Niigata 950-2181, Japan.
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Abe K, Niikura Y, Misawa M. GABAA receptor-mediated inhibition by ethanol of long-term potentiation in the basolateral amygdala-dentate gyrus pathway in vivo. Neuroscience 2004; 125:113-7. [PMID: 15051150 DOI: 10.1016/j.neuroscience.2004.01.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2004] [Indexed: 11/27/2022]
Abstract
Although ethanol has been reported to inhibit the induction of long-term potentiation in hippocampal CA1 and dentate gyrus synapses of rats, very little is known about the effect of ethanol on synaptic plasticity in other brain regions. Therefore, in the present study, we investigated the effect of ethanol on long-term potentiation in synaptic pathway from the basolateral amygdala to the dentate gyrus by using anesthetized rats in vivo. I.v. (20-40% x 2 ml/kg) or i.c.v. (30-40% x 5 microl) administration of ethanol did not affect the basal amplitude of dentate gyrus field potential evoked by basolateral amygdala stimulation, but significantly inhibited the induction of long-term potentiation following application of tetanic stimulation. Since long-term potentiation in this pathway was independent of N-methyl-d-aspartate receptors, the inhibitory effect of ethanol is unlikely to be caused by suppression of N-methyl-d-aspartate receptor function. Alternatively, long-term potentiation in this pathway was significantly suppressed by the benzodiazepine agonist diazepam (2 mg/kg, i.p.), and the inhibitory effect of ethanol was abolished by the GABAA receptor channel blocker picrotoxin (1 mg/kg, i.p.). The present study demonstrates that ethanol inhibits the induction of long-term potentiation in the basolateral amygdala-dentate gyrus pathway by enhancing GABAA receptor-mediated neurotransmission.
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Affiliation(s)
- K Abe
- Department of Pharmacology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Tabata M, Satake A, Okura N, Yamazaki Y, Toda A, Nishioka K, Tanaka H, Chin M, Itsukuma T, Yamaguchi M, Misawa M, Kai S, Hara H. Long-term outcome after allogeneic bone marrow transplantation for hematological malignancies with non-remission status. Results of a single-center study of 24 patients. Ann Hematol 2002; 81:582-7. [PMID: 12424540 DOI: 10.1007/s00277-002-0506-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 01/15/2002] [Accepted: 06/26/2002] [Indexed: 11/30/2022]
Abstract
To investigate the problem of allogeneic bone marrow transplantation (allo-BMT) for advanced stage patients, we retrospectively analyzed 24 consecutive patients who underwent allo-BMT in the non-remission stage. Twenty-four patients (19 males and 5 females) with acute leukemia, chronic myelogenous leukemia, and malignant lymphoma underwent allo-BMT. The patients had a median age of 30 years. There were eight cases of acute myelogenous leukemia (AML), six cases acute lymphocytic leukemia (ALL), nine cases of chronic myelogenous leukemia (CML), and one case of Burkitt's lymphoma. The 3-year overall survival rate was 22.5%, with a median survival time of 206 days in AML, 345 days in ALL, and 363 days in CML. Overall survival was associated with a recovery of platelets of less than 30 days and an acute graft-versus-host disease (acute GVHD) presence of less than grade II ( p=0.042). Fourteen patients died of transplantation-related diseases. Our important problem is to decrease transplantation-related deaths in allo-BMT during the non-remission stage, and longer survival can be expected with better pretreatment and prophylaxis for GVHD. In addition, the selection of the source of hematopoietic stem cell transplantation at an optimal time is considered to be another problem to be approached.
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Affiliation(s)
- M Tabata
- Department of Transfusion Medicine, Hyogo College of Medicine, Mukogawa-cho 1-1, Nishinomiya, Hyogo 663-8501, Japan.
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Ushida H, Iwadate Y, Fukushima K, Misawa M, Fukunaga T, Nakazawa T, Iwamoto A. Local structure of molten NaClO3 and KClO3 analyzed by pulsed neutron diffraction, Raman spectroscopy, and molecular orbital calculation. J Mol Liq 2002. [DOI: 10.1016/s0167-7322(02)00040-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kanaya T, Ohkura M, Kaji K, Furusaka M, Misawa M. Structure of Poly(vinyl alcohol) Gels Studied by Wide- and Small-Angle Neutron Scattering. Macromolecules 2002. [DOI: 10.1021/ma00098a014] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.4] [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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Misawa M. Mesoscale structure and fractal nature of 1-propanol aqueous solution: A reverse Monte Carlo analysis of small angle neutron scattering intensity. J Chem Phys 2002. [DOI: 10.1063/1.1471903] [Citation(s) in RCA: 25] [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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Sakai H, Chiba Y, Misawa M. Site difference in RhoA expression between rat bronchial and tracheal smooth muscles after antigen challenge--relation to development of hyperresponsiveness. Inflamm Res 2001; 50:577-80. [PMID: 11766998 DOI: 10.1007/pl00000236] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 10/25/2022] Open
Abstract
OBJECTIVE The present study compared the effects of repeated antigen exposure on the development of hyperresponsiveness and the expression of RhoA in the main bronchial and lower tracheal smooth muscles of sensitized METHODS Actively sensitized rats were repeatedly challenged by antigen inhalation. Twenty-four hours after the final antigen challenge the isometrical contractions of the bronchial and tracheal smooth muscles were measured. Immunoblottings were also performed using bronchial and tracheal homogenates and the density ratios of RhoA/beta-actin were calculated to quantify the levels of RhoA. RESULTS Acetylcholine-induced contraction of bronchial, but not tracheal, smooth muscle of antigen-treated rats was significantly augmented as compared with that of control rats, indicating that airway hyperresponsiveness appeared by antigen challenge in bronchial smooth muscle. RhoA expression in bronchial, but not tracheal, smooth muscle was significantly increased in the antigen-treated animals. CONCLUSION The increased expression of RhoA is suggested to have an important role in developing hyperresponsiveness of bronchial smooth muscle.
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Affiliation(s)
- H Sakai
- Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan
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Misawa M. [The analects of Hajime Hoshi (no. I)] (Jpn). Yakushigaku Zasshi 2001; 23:98-101. [PMID: 11622144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Misawa M. [Dr. Hideyo Noguchi and Hajime Hoshi] (Jpn). Yakushigaku Zasshi 2001; 26:113-20. [PMID: 11623303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Misawa M. [The analects of Hajime Hoshi (No. 2)] (Jpn). Yakushigaku Zasshi 2001; 24:120-2. [PMID: 11622502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Takahashi A, Misawa M, Yanaura S. [The proposal for community pharmacist activity from a viewpoint of science history]. Yakushigaku Zasshi 2001; 29:22-31. [PMID: 11613499] [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: 02/21/2023]
Abstract
Community pharmacists have many kinds of problems for demonstrating their ability and activity. One of them is to realize the professional activity. At present, I am afraid that such community professional activities might be for now confined to legal extension. I would therefore like to discuss the aspect of professional centrifugal practice in community health care system under the pharmaceutical law system. Secondly, the role of pharmacists in drug sale comprises advising and controlling medication that we call "Application Pharmacy" in which individual pharmacokinetics and susceptivities have to be considered. The Application Pharmacy will be established in the community medical health care system for new pharmacist's activity. The Application Pharmacy should be a requirement for community pharmacists and lead to a notion of "Community Pharmacy Therapeutics."].
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Affiliation(s)
- A Takahashi
- Department of Pharmacology, Hoshi University, School of Pharmacy, Tokyo
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Misawa M. [The analects of Hajime Hoshi (No. 3) - philosophy of Hoshi]. Yakushigaku Zasshi 2001; 27:109-16. [PMID: 11639705] [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: 02/22/2023]
Abstract
Hajime Hoshi was the founder of Hoshi Pharmaceutical Company and Hoshi University. He made one of the biggest pharmaceutical companies in Japan in the early 20th century, and furthermore was a journalist, member of the Diet, educator, and also a writer. With such a checkered career, he had an attractive and invincible philosophy. As well as his most import philosophy "kindness first" described in the previous paper, "cooperation first" also had weight in his thought. In the Creed of the Hoshi Pharmaceutical Company, he said "self-reliance should go hand-in-hand with cooperation. Cooperation is an essential requisite in all successful enterprises." "Cooperation is an order of the god, and leads directly to progress." "Cooperation is construction, but noncooperation is destruction." Besides the thought "cooperation first," a part of his profound aphorism is described below. "Patience produces everything and conquers everything." "Success is proportioned to the degree of patience." "Success or failure is determined not at the end, but at the start of an enterprise. A well-conceived plan is the mother of success." "Train your mind. Man's brains become the more fertile and keen, the more they are used." "The is no limit to improvement and invention. We should never relax our endeavor to improve and invent." "Smile! Smile! Do your work with a smile on your face. Conquer difficulty and discontent with smiles." "Yesterday's impossibility is today's possibility. Today's impossibility is tomorrow's possibility."
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Affiliation(s)
- M Misawa
- Hoshi University, School of Pharmacy, Tokyo
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Chiba Y, Takeyama H, Sakai H, Misawa M. Effects of Y-27632 on acetylcholine-induced contraction of intact and permeabilized intrapulmonary bronchial smooth muscles in rats. Eur J Pharmacol 2001; 427:77-82. [PMID: 11553366 DOI: 10.1016/s0014-2999(01)01225-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [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: 01/30/2023]
Abstract
In the present study, the effects of a selective Rho-associated coiled-coil forming protein kinase (ROCK) inhibitor, Y-27632 [(+)-(R)-trans-4-(1-aminoethyl)-(4-pyridyl)cyclohexanecarboxamide dihydrochloride] on acetylcholine-induced contraction and Ca(2+) sensitization of rat bronchial smooth muscle were examined. Intact and beta-escin-permeabilized muscles of the third branch of intrapulmonary bronchi were used. In intact muscles, Y-27632 (10(-6)-10(-4) M) concentration-dependently inhibited acetylcholine-induced contractile responses. In acetylcholine (10(-3) M)-precontracted intact muscles, the maximal relaxation (about 50% inhibition of contraction) was obtained by a concentration of 10(-4) M Y-27632, which had no effect on the resting tone. In beta-escin-permeabilized muscles, addition of acetylcholine (10(-5)-10(-3) M) plus GTP (100 microM) induced a further contraction, i.e., Ca(2+) sensitization at a constant Ca(2+) concentration of pCa=6.0. The acetylcholine-induced Ca(2+) sensitization was completely blocked in the presence of 10(-4) M Y-27632, whereas the Ca(2+)-induced contraction itself was not affected by Y-27632. Immunoblot study revealed the expression of ROCK-I and ROCK-II proteins in the intrapulmonary bronchi of rats. These findings suggest that Y-27632 dilates acetylcholine-mediated contraction of rat bronchial smooth muscle by inhibiting RhoA/ROCK-mediated Ca(2+) sensitization.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan.
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Chiba Y, Sakai H, Misawa M. Augmented acetylcholine-induced translocation of RhoA in bronchial smooth muscle from antigen-induced airway hyperresponsive rats. Br J Pharmacol 2001; 133:886-90. [PMID: 11454662 PMCID: PMC1572845 DOI: 10.1038/sj.bjp.0704137] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Acetylcholine (ACh)-induced translocation of RhoA in bronchial smooth muscle of repeatedly antigen-challenged rats that have a marked airway hyperresponsiveness (AHR) was examined. ACh induced time- and concentration-dependent translocation of RhoA to the plasma membrane, indicating an activation of RhoA in bronchial smooth muscle. The level of ACh-induced RhoA translocation was further increased markedly in the AHR group as compared to that in the control group. It is suggested that the augmented activation of RhoA observed in the hyperresponsive bronchial smooth muscle might be responsible for the enhanced ACh-induced Ca(2+) sensitization of bronchial smooth muscle contraction associated with AHR.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan.
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Abstract
OBJECTIVE To obtain information on the activation pathway of the monomeric G protein, RhoA, in bronchial smooth muscle, the expression of G alpha12 and G alpha13 in bronchial smooth muscle of the rat was determined. The levels of these G proteins were also compared between antigen-induced airway hyperresponsive and normal control groups. METHODS Actively sensitized rats were repeatedly challenged by antigen inhalation. Twenty-four hours after the final antigen challenge, membrane preparations of bronchial smooth muscles were prepared. Immunoblottings were performed, and the density ratios of G alpha12/beta-actin and G alpha13/beta-actin were calculated to quantify the levels of these G-protein alpha subunits. RESULTS Both G alpha12 and G alpha13 proteins were expressed in rat bronchial smooth muscle. The levels of bronchial G alpha12 and G alpha13 proteins in the repeatedly antigen challenged rats were significantly increased as compared with those in control animals; the magnitude of upregulation in the airway-hyperresponsive group was 89% and 68% in the control group, respectively. CONCLUSION G alpha12 and G alpha13 proteins were expressed in rat bronchial smooth muscle. Considering the probable involvement of G12 and G13 proteins in Ca2+ sensitization through Rho protein, the augmented expression of such G proteins after repeated antigen challenge may be responsible for the hyperresponsiveness of bronchial smooth muscle contraction in rats.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan.
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Iwata M, Nakano H, Matsuura Y, Nagasaka M, Misawa M, Mizuta S, Ito I, Saito T, Ito T, Hokama M, Kamiya M, Hobara R, Watanabe M, Takahama K. [Intestinal permeability in Crohn's disease and effects of elemental dietary therapy]. Nihon Shokakibyo Gakkai Zasshi 2001; 98:636-43. [PMID: 11436280] [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: 02/20/2023]
Abstract
Enteral intake of non-metabolic monosacharide and disaccharide, followed by measurement of the urinary excretion ratio of the two, is a method used to investigate intestinal permeability. L/R ratio (lactulose/1-rhamnose urinary excretion ratio) is considered an indicator of permeability of the small intestine. An increased L/R ratio is caused by mucosal disorders of the small intestine. The L/R ratio in all patients (n = 92) with Crohn's disease was 0.079 +/- 0.081 (mean +/- S.D.), which was significantly higher than the value in normal controls (0.027 +/- 0.009, n = 20, p < 0.05). In 39 patients with Crohn's disease, we assessed intestinal permeability before after treatment with an elemental diet, and during remission. The L/R ratio was 0.120 +/- 0.092, before treatment and 0.065 +/- 0.097 after treatment (p < 0.05), showing increased intestinal permeability before elemental dietary treatment. During remission, the L/R ratio was 0.035 +/- 0.028; this did not differ significantly from the value obtained after treatment. We conclude that intestinal permeability is useful for investigating disease activity in patients with Crohn's disease.
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Affiliation(s)
- M Iwata
- Department of Internal Medicine and Gastroenterology, Fujita Health University
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Chiba Y, Sakai H, Misawa M. Possible involvement of G(i3) protein in augmented contraction of bronchial smooth muscle from antigen-induced airway hyperresponsive rats. Biochem Pharmacol 2001; 61:921-4. [PMID: 11274979 DOI: 10.1016/s0006-2952(01)00551-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 10/17/2022]
Abstract
To investigate a possible involvement of pertussis toxin (PTX)-sensitive heterotrimeric G proteins in the pathogenesis of airway hyperresponsiveness, the effect of PTX treatment on the augmented contractile response to acetylcholine (ACh) in bronchial smooth muscle of antigen-induced airway hyperresponsive rats was determined. In bronchial smooth muscle of airway hyperresponsive rats that were actively sensitized and repeatedly challenged with 2,4-dinitrophenylated Ascaris suum antigen, ACh-induced contractions were markedly augmented. The augmented contractile responses in the airway hyperresponsive group were significantly inhibited after treatment with PTX (1 microg/mL for 6 hr, 37 degrees ), whereas only a slight attenuation was observed in the normal control group. The level of G(alpha)i3 (measured by immunoblotting), but not other alpha-subunits of G(i/o) family proteins, in bronchial smooth muscle of the airway hyperresponsive rats was significantly increased as compared with that of control animals. It is concluded that PTX-sensitive muscarinic contractile responses of bronchial smooth muscle might be augmented upon antigen-induced airway hyperresponsiveness in rats, probably due to an up-regulation of G(alpha)i3 protein of bronchial smooth muscle.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, Hoshi University, School of Pharmacy, 2-4-41 Ebara, Shinagawa-ku, 142-8501, Tokyo, Japan.
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Chiba Y, Sakai H, Suenaga H, Kamata K, Misawa M. Enhanced Ca2+ sensitization of the bronchial smooth muscle contraction in antigen-induced airway hyperresponsive rats. Res Commun Mol Pathol Pharmacol 2001; 106:77-85. [PMID: 11127810] [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: 02/18/2023]
Abstract
To investigate the alteration in acetylcholine (ACh)-induced increase in Ca2+ sensitization of bronchial smooth muscle contraction concurrent with the airway hyperresponsiveness (AHR), the ACh-induced increases in cytosolic Ca2+ ([Ca2+]) level and contractile response were simultaneously determined by using Fura-2 loaded bronchial smooth muscle. The left main bronchi were isolated from AHR rats which were sensitized and repeatedly challenged with DNP-Ascaris antigen. The tissue ring preparations were incubated in loading solution containing 10 microM Fura-2AM for 3 hr at room temperature. Then the isometrical contraction and [Ca2+]i (F340/F380) were monitored. Although the ACh (10(-3) M)-induced contractile response in AHR group (322 +/- 60 % of 60 mM K+ induced contraction) was significantly greater than that in control animals (173 +/- 15 %, p<0.05), the ACh (10(-3) M)-induced increase in [Ca2+]i was without significant difference between the two groups (128 +/- 15 and 171 +/- 29% of 60 mM K+ -induced increase in [Ca2+]i, respectively). These findings suggest that an augmentation of ACh-induced Ca2+ sensitization may occur in bronchial smooth muscle of the rats with antigen-induced AHR.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan.
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Kono T, Kohno A, Kuwashima S, Iimura F, Fujioka M, Miyata R, Mizusawa Y, Kagawa F, Kaneko S, Yoshino Y, Misawa M, Ito M, Otsuka M, Seki I. CT findings of descending necrotising mediastinitis via the carotid space ('Lincoln Highway'). Pediatr Radiol 2001; 31:84-6. [PMID: 11214691 DOI: 10.1007/s002470000369] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A 3-year-old girl with fever and neck swelling showed widening of the superior mediastinum on chest radiographs. Contrast-enhanced CT of the neck revealed ill-defined low-attenuation areas with a thick, enhanced rim adjacent to the hypertrophied palatine tonsil. The abscess extended inferiorly within the carotid sheath between the carotid artery and the internal jugular vein into the anterior mediastinum. The carotid space is considered an important conduit of descending necrotising mediastinitis and is called the 'Lincoln Highway' as previously suggested.
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Affiliation(s)
- T Kono
- Department of Radiology, Dokkyo University School of Medicine, Tochigi, Japan.
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Ichikawa K, Kameda Y, Matsumoto T, Misawa M. Indirect and direct correlations between unlike ions in incompletely hydrated solution. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/17/28/002] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chiba Y, Takada Y, Sakai H, Takeyama H, Misawa M. Acetylcholine-induced smooth muscle contraction of intrapulmonary small bronchi is augmented in antigen-induced airway hyperresponsive rats. Jpn J Pharmacol 2000; 84:221-4. [PMID: 11128046 DOI: 10.1254/jjp.84.221] [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] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Smooth muscle responsiveness of intrapulmonary small bronchi obtained from repeatedly antigen-challenged rats was compared with that from control animals to determine whether smooth muscle contractility of peripheral airways is augmented by such repeated challenge. In intact (non-permeabilized) smooth muscles of intrapulmonary bronchi, the acetylcholine (ACh)-induced contractile response was significantly augmented in the repeated challenge group, although 60-mM K+-induced contraction was within the normal level. In beta-escin-permeabilized muscles, no significant difference between groups was observed in the Ca2+-induced contractile responses. Thus, augmented ACh-induced contraction of intact intrapulmonary small bronchial smooth muscle might be, at least in part, due to an enhanced ACh-mediated Ca2+-sensitizing signal.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan.
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Affiliation(s)
- Y Fujimori
- The Second Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya
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Chiba Y, Arimoto T, Yoshikawa T, Misawa M. Elevated nitric oxide synthase activity concurrent with antigen-induced airway hyperresponsiveness in rats. Exp Lung Res 2000; 26:535-49. [PMID: 11076311 DOI: 10.1080/019021400750048081] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 10/17/2022]
Abstract
To characterize the airway nitric oxide synthase (NOS) activities concurrent with airway hyperresponsiveness (AHR), a common feature of allergic asthma, the NOS activities of airway tissue homogenates from the antigen-induced AHR rats were determined by the ability of tissue homogenates to convert L-arginine to L-citrulline (Cit). A significantly higher level of total NOS activities was found in homogenates from the AHR rats (19.9 +/- 1.3 pmol Cit/min/mg protein) compared to those from sensitized control and normal control groups (9.8 +/- 1.2 and 8.8 +/- 1.2 pmol Cit/min/mg protein, respectively; P < .01). The nitrite concentration in bronchoalveolar lavage fluids, which indicates the in vivo generation of NO in airways, from the AHR rats (7.40 +/- 0.71 microM) was significantly greater than that from nonsensitized normal animals (1.45 +/- 1.12 microM, P < .01). Although the protein levels of endothelial (eNOS) and neuronal type NOS (nNOS) determined by immunoblotting were within normal levels, the amount of inducible NOS (iNOS) protein was markedly and significantly elevated in airway tissue homogenates from the AHR rats. Immunohistochemical staining of airway tissues with specific antibody against iNOS demonstrated a distinct localization of iNOS on epithelial cells and infiltrated inflammatory cells in the bronchi of the hyperresponsive rats, but only negligible staining of epithelia was observed in the nonsensitized normal group. No difference in constitutive NOS (eNOS and nNOS) localization was observed between groups. The present findings indicate that the NOS activities in airway tissues are elevated in antigen-induced AHR rats, which is mainly derived from the induction of iNOS in the airways. Downregulation of constitutive eNOS and nNOS is not found in this animal model of AHR.
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Affiliation(s)
- Y Chiba
- Department of Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan.
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Tanaka M, Misawa M. [Proposals for innovative pharmacology education from the perspective of several fields--in response to rapidly changing times]. Nihon Yakurigaku Zasshi 2000; 116:163-70. [PMID: 11031746 DOI: 10.1254/fpj.116.163] [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] [Indexed: 04/15/2023]
Abstract
The Japanese Pharmacological Society has not given a symposium to discuss the topic of overall pharmacology education since 1994 (the 67th Annual Meeting). Thereafter, we have been witnessing great changes in the environment surrounding pharmacology, where scientific advances in life science have made boundaries between the various life sciences ambiguous and have brought the following questions before us: what is pharmacology and what should it be? Considering the situation, the Committee of Education of the Society organized a symposium on pharmacology education at the 73rd Annual Meeting in 2000, which will discuss current problems encountered in pharmacology education today and what pharmacology education should be hereafter. The symposists consisted of five people with backgrounds in basic medicine (biochemistry), clinical medicine (internal medicine), hospital pharmacy, pharmaceutical industry and administration (the Ministry of Health and Welfare). They unanimously emphasized that education of pharmacology should be reformed profoundly so as to contribute to a greater degree to professional medical services and new drug development as well as to basic science and meet the needs of the new era. We hope this symposium will trigger a further discussion on pharmacology education for the future.
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Affiliation(s)
- M Tanaka
- Department of Pharmacology, School of Medicine, Kurume University, Japan
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Yoshida K, Misawa M, Maruyama K, Imai M, Furusaka M. Small angle neutron scattering study on the salt-induced phase separation of 1-propanol aqueous solution. J Chem Phys 2000. [DOI: 10.1063/1.482048] [Citation(s) in RCA: 26] [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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Suzuki T, Kato H, Aoki T, Tsuda M, Narita M, Misawa M. Effects of the non-competitive NMDA receptor antagonist ketamine on morphine-induced place preference in mice. Life Sci 2000; 67:383-9. [PMID: 11003048 DOI: 10.1016/s0024-3205(00)00639-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [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: 11/22/2022]
Abstract
The effects of ketamine, a noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, on morphine-induced place preference were examined in mice. Morphine (1-5 mg/kg, s.c.) produced a dose-related place preference in mice. Ketamine alone (3, 10 mg/kg, i.p.), like dizocilpine alone (0.2 mg/ kg, i.p.), also produced a preference for the drug-associated place. Pretreatment with ketamine (10 mg/ kg, i.p.) or dizocilpine (0.1 and 0.2 mg/kg, i.p) suppressed the place preference produced by morphine in a dose-dependent manner. These findings provide the first demonstration that ketamine alone produces a place preference using the conditioned place preference (CPP) paradigm, but that mice treated with ketamine combined with morphine show neither a morphine- nor a ketamine-induced place preference.
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Affiliation(s)
- T Suzuki
- Department of Toxicology, School of Pharmacy, Hoshi University, Tokyo, Japan.
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