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Miyawaki T, Kenmotsu H, Yabe M, Kodama H, Nishioka N, Miyawaki E, Mamesaya N, Kobayashi H, Omori S, Wakuda K, Ono A, Naito T, Murakami H, Mori K, Harada H, Takahashi T. P19.02 Association between Number of Residual Metastases and Patterns of Progression on EGFR TKI in EGFR mutated Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.563] [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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Kodama H, Kenmotsu H, Yabe M, Nishioka N, Miyawaki E, Miyawaki T, Mamesaya N, Kobayashi H, Omori S, Wakuda K, Ono A, Naito T, Murakami H, Takahashi T. P76.68 The Impact of Eligibility for Anti-Angiogenic Treatment to the Prognosis of Patients with Non-Small Cell Lung Cancer Harboring EGFR Mutations. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1125] [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: 10/21/2022]
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Ueoka H, Sasaki K, Miyawaki T, Ichino T, Tatsumi K, Suzuki S, Yamamoto H, Sakurai N, Suzuki H, Shibata D, Yazaki K. A Cytosol-Localized Geranyl Diphosphate Synthase from Lithospermum erythrorhizon and Its Molecular Evolution. Plant Physiol 2020; 182:1933-1945. [PMID: 31974127 PMCID: PMC7140919 DOI: 10.1104/pp.19.00999] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 12/22/2019] [Indexed: 05/23/2023]
Abstract
Geranyl diphosphate (GPP) is the direct precursor of all monoterpenoids and is the prenyl source of many meroterpenoids, such as geranylated coumarins. GPP synthase (GPPS) localized in plastids is responsible for providing the substrate for monoterpene synthases and prenyltransferases for synthesis of aromatic substances that are also present in plastids, but GPPS activity in Lithospermum erythrorhizon localizes to the cytosol, in which GPP is utilized for the biosynthesis of naphthoquinone pigments, which are shikonin derivatives. This study describes the identification of the cytosol-localized GPPS gene, LeGPPS, through EST- and homology-based approaches followed by functional analyses. The deduced amino acid sequence of the unique LeGPPS showed greater similarity to that of farnesyl diphosphate synthase (FPPS), which generally localizes to the cytosol, than to plastid-localized conventional GPPS. Biochemical characterization revealed that recombinant LeGPPS predominantly produces GPP along with a trace amount of FPP. LeGPPS expression was mainly detected in root bark, in which shikonin derivatives are produced, and in shikonin-producing cultured cells. The GFP fusion protein in onion (Allium cepa) cells localized to the cytosol. Site-directed mutagenesis of LeGPPS and another FPPS homolog identified in this study, LeFPPS1, showed that the His residue at position 100 of LeGPPS, adjacent to the first Asp-rich motif, contributes to substrate preference and product specificity, leading to GPP formation. These results suggest that LeGPPS, which is involved in shikonin biosynthesis, is recruited from cytosolic FPPS and that point mutation(s) result in the acquisition of GPPS activity.
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Affiliation(s)
- Hayato Ueoka
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Kanako Sasaki
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Tatsuya Miyawaki
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Takuji Ichino
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Kanade Tatsumi
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Shiro Suzuki
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | | | - Nozomu Sakurai
- Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan
| | - Hideyuki Suzuki
- Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan
| | - Daisuke Shibata
- Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan
| | - Kazufumi Yazaki
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
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Mamesaya N, Narita S, Naito T, Udagawa H, Goto K, Miyawaki T, Nakashima K, Kenmotsu H, Shimokawaji T, Kato T, Hakozaki T, Okuma Y, Nakayama Y, Watanabe H, Kusumoto M, Ohe Y, Horinouchi H. Nivolumab-induced and radiation recall pneumonitis in patients with non-small cell lung cancer: A multicenter real world analysis of 669 patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.029] [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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Ao M, Awane M, Asao Y, Miyawaki T, Tanaka K. MON-PO501: High Prevalence of Vitamin B12 Deficiency Before and Early After Gastrectomy in Patients with Gastric Cancer. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32334-9] [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: 12/01/2022]
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Nitta A, Imai S, Kajiyama S, Miyawaki T, Matsumoto S, Ozasa N, Kajiyama S, Hashimoto Y, Tanaka M, Fukui M. Impact of different timing of consuming sweet snack on postprandial glucose excursions in healthy women. Diabetes Metab 2018; 45:369-374. [PMID: 30391714 DOI: 10.1016/j.diabet.2018.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/19/2018] [Accepted: 10/24/2018] [Indexed: 10/28/2022]
Abstract
AIMS Our aim was to evaluate the acute effect of eating sweet snacks at different times of day on glycaemic parameters in young women without diabetes. METHODS In this randomized controlled three-treatment crossover study, 17 women [(means ± SD) age: 21.2 ± 0.8 years, BMI: 20.7 ± 2.5 kg/m2, HbA1c: 36 ± 2 mmol/mol (5.1 ± 0.2%)] wore flash (continuous) glucose monitoring systems for 7 days. Each participant consumed identical test meals on days 4, 5 and 6, but consumed sweet snacks (baked cake: 498 kcal; 53.6 g of carbohydrate, 8.0 g of protein, 28.0 g of fat) at 12:30 (post-lunch), 15:30 (mid-afternoon) and 19:30 (post-dinner), respectively, on each of those days. Daily glycaemic parameters on those 3 days of snacking at different times of day were compared within-participant. RESULTS The mean amplitude of glycaemic excursions (3.54 ± 0.32 vs. 2.73 ± 0.20 mmol/L; P < 0.05), standard deviation of glucose (1.20 ± 0.11 vs. 0.92 ± 0.07 mmol/L; P < 0.05), incremental area under the curve (IAUC) for glucose at 12:00-07:00 (986 ± 89 vs. 716 ± 88 mmol/L × min; P < 0.05) and IAUC at 07:00-10:00 the next day (141 ± 17 vs. 104 ± 12 mmol/L × min; P < 0.05) when the snack was eaten post-dinner were all significantly higher than with mid-afternoon snacking. CONCLUSION Eating sweet snacks post-dinner should be avoided because it worsens glucose excursions as well as postprandial glucose levels after both dinner and the following day's breakfast in young healthy (non-diabetic) women.
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Affiliation(s)
- A Nitta
- Department of Food and Nutrition, Faculty of Home Economics, Kyoto Women's University, Kyoto, Japan
| | - S Imai
- Department of Food and Nutrition, Faculty of Home Economics, Kyoto Women's University, Kyoto, Japan.
| | - S Kajiyama
- Kajiyama Clinic, Kyoto, Japan; Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - T Miyawaki
- Department of Food and Nutrition, Faculty of Home Economics, Kyoto Women's University, Kyoto, Japan
| | - S Matsumoto
- Department of Food and Nutrition, Faculty of Home Economics, Kyoto Women's University, Kyoto, Japan
| | - N Ozasa
- Kyoto University, Graduate School of Medicine, Kyoto, Japan
| | - S Kajiyama
- Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Y Hashimoto
- Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Tanaka
- Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Fukui
- Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
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Imai S, Kajiyama S, Hashimoto Y, Nitta A, Miyawaki T, Matsumoto S, Ozasa N, Tanaka M, Kajiyama S, Fukui M. Consuming snacks mid-afternoon compared with just after lunch improves mean amplitude of glycaemic excursions in patients with type 2 diabetes: A randomized crossover clinical trial. Diabetes Metab 2018; 44:482-487. [PMID: 30054154 DOI: 10.1016/j.diabet.2018.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/18/2018] [Accepted: 07/07/2018] [Indexed: 12/22/2022]
Abstract
AIMS Our aim was to explore the acute effects of consuming snacks at different times on glucose excursions in patients with type 2 diabetes (T2D). METHODS Seventeen patients with T2D [means±SD: age 67.4±9.4-years; BMI 23.5±3.1kg/m2; HbA1c 55±6mmol/mol (7.2±1.0%)] were randomly assigned in this crossover study. Each participant wore a continuous glucose monitoring device for 4 days and consumed identical test meals on the second and third days, comprising breakfast at 0700h, lunch at 1200h and dinner at 1900h. Half the participants consumed 75kcal biscuits at 1230h (just after lunch) on the second day and at 1530h (mid-afternoon) on the third day, while the other half consumed snacks at the same times, but vice versa. Each patient's glucose parameters were compared against baseline for the 2days of snacking at different times of day. RESULTS Consuming snacks in the mid-afternoon led to significantly lower mean amplitudes of glycaemic excursions (mean±SEM: 5.19±0.48 vs. 6.90±0.69mmol/L, P<0.01; standard deviation: 1.75±0.17 vs. 2.16±0.21mmol/L, P<0.01) and incremental areas under the curve for glucose after dinner (479±76 vs. 663±104mmol/L per min, P<0.01) compared with snacking just after lunch, whereas mean glucose levels did not differ over the 2days. CONCLUSION These results suggest that consuming snacks well separated from lunch may be an effective way to suppress postprandial glucose levels and glycaemic excursions.
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Affiliation(s)
- S Imai
- Department of Food and Nutrition, Kyoto Women's University, Kyoto, Japan; Department of Comprehensive Rehabilitation, Osaka Prefecture University, Osaka, Japan.
| | - S Kajiyama
- Kajiyama Clinic, Kyoto, Japan; Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Y Hashimoto
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - A Nitta
- Department of Food and Nutrition, Kyoto Women's University, Kyoto, Japan
| | - T Miyawaki
- Department of Food and Nutrition, Kyoto Women's University, Kyoto, Japan
| | - S Matsumoto
- Department of Food and Nutrition, Kyoto Women's University, Kyoto, Japan
| | - N Ozasa
- Department of Cardiovascular Medicine, Kyoto University, Graduate School of Medicine, Kyoto, Japan
| | - M Tanaka
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - S Kajiyama
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Fukui
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
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Higuchi H, Maeda S, Ishii-Maruhama M, Honda-Wakasugi Y, Yabuki-Kawase A, Miyawaki T. Intellectual disability is a risk factor for delayed emergence from total intravenous anaesthesia. J Intellect Disabil Res 2018; 62:217-224. [PMID: 29193472 DOI: 10.1111/jir.12448] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 09/28/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Previous studies have suggested that ID influences the depth of general anaesthesia (GA) and delays emergence from GA. In this retrospective cohort study, we investigated whether ID affects the time taken to emerge from GA. METHODS We selected dental patients who underwent GA at the Department of Dental Anaesthesiology, Okayama University Hospital, using predefined inclusion and exclusion criteria, before dividing the selected participants into ID and non-ID (control) groups. Relevant data were collected from electronic anaesthesia records. Emergence time, the time from the discontinuation of propofol and remifentanil to tracheal extubation, was recorded for each patient. We compared the data of the ID group and control group. The association between ID and the emergence time was tested for statistical significance. Multivariate linear regression analysis was used to control for confounders. RESULTS A total of 97 cases (control = 50, ID = 47) were included in the study. The emergence time was significantly longer in the ID group (ID group: 15.8 ± 6.6 min, control group: 10.8 ± 3.6 min). The ID group included more men and lower propofol and remifentanil infusion rates. The treatment time was longer, and the mean bispectral index was lower in the ID group. Sevoflurane inhalation was used only for anaesthesia induction in the ID group. In the multivariate linear regression analysis, ID was found to be significantly associated with a longer emergence time. CONCLUSION Our results suggest that ID is associated with a longer emergence time from GA.
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Affiliation(s)
- H Higuchi
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - S Maeda
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - M Ishii-Maruhama
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Honda-Wakasugi
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Miyawaki
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Miyawaki T, Yagishita S, Ko R, Suzuki Y, Matsumoto N, Hara M, Iwakami N, Fujii M, Iwakami SI, Takahashi K. 479P The impact of initial symptoms on survival time in advanced non-small cell lung cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw594.043] [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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Takaya K, Higuchi H, Ishii-Maruhama M, Yabuki-Kawase A, Honda Y, Tomoyasu Y, Maeda S, Miyawaki T. Capnography Prevents Hypoxia during Sedation for Dental Treatment: A Randomized Controlled Trial. JDR Clin Trans Res 2016; 2:158-167. [DOI: 10.1177/2380084416674670] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Intravenous sedation is useful for dental treatment in patients with intellectual disabilities. However, it is often necessary to manage such patients with deep sedation because their cooperation cannot be obtained. During deep sedation, undetected hypoventilation can lead to severe complications, such as hypoxia. Recently, capnographic monitoring has been advocated as a useful technique for preventing hypoxia during sedation. This randomized control trial evaluated whether the use of capnography reduces the incidence of hypoxia during the deep sedation of patients for dental treatment. This study involved patients with intellectual disabilities who underwent dental treatment under sedation. The subjects were randomized to the intervention group (I-group) or control group (C-group). All of the patients underwent routine monitoring, as well as bispectral index (BIS) and capnographic monitoring; however, only an independent observer had access to the patients’ capnographic data during the dental procedures. Sedation was maintained at a BIS of 50 to 70 by administration of propofol. In the I-group, the independent observer signaled to the dental anesthesiologist if the capnogram indicated that the patient had been suffering from alveolar hypoventilation or apnea for >15 s. In the C-group, the observer signaled to the dental anesthesiologist if the capnogram indicated that the patient had been suffering from alveolar hypoventilation or apnea for >60 s. In both groups, the dental anesthesiologists responded to the signals using appropriate airway management strategies. The primary endpoint of this study was the incidence of hypoxia during dental treatment, which was defined as oxygen saturation of <95%. Hypoxemic episodes occurred in 13.4% and 34.8% of cases in the I-group and C-group, respectively. The incidence of hypoxia was significantly lower in the I-group. These results suggest that capnographic monitoring during deep sedation for dental treatment prevents hypoxemic episodes by allowing the early detection of hypoventilation. Knowledge Transfer Statement: This is the first randomized controlled trial to examine whether the use of capnography reduces the incidence of hypoxia during deep sedation for dental treatment. The findings of this study can be used by clinicians to aid decision-making regarding dental sedation standards at individual clinics. Moreover, they can be used as high-level evidence during the production or updating of clinical guidelines for dental sedation by leading associations.
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Affiliation(s)
- K. Takaya
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - H. Higuchi
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - M. Ishii-Maruhama
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A. Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y. Honda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - Y. Tomoyasu
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S. Maeda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - T. Miyawaki
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Nishida N, Yang X, Takasaki I, Imai K, Kato K, Inoue Y, Imamura T, Miyashita R, Kato F, Yamaide A, Mori M, Saito S, Hara J, Adachi Y, Miyawaki T, Kanegane H. Dysgammaglobulinemia Associated With Glu349del, a Hypomorphic XIAP Mutation. J Investig Allergol Clin Immunol 2015; 25:205-213. [PMID: 26182687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND X-linked lymphoproliferative syndrome type 2 is a rare hereditary immunodeficiency caused by mutations in the XIAP gene. This immunodeficiency frequently results in hemophagocytic lymphohistiocytosis, although hypogammaglobulinemia and dysgammaglobulinemia are also common. OBJECTIVE We identified 17 patients from 12 Japanese families with mutations in XIAP. The Glu349del mutation was observed in 3 patients, each from a different family. Interestingly, these patients exhibited dysgammaglobulinemia but not hemophagocytic lymphohistiocytosis. We conducted an immunological study of patients carrying Glu349del and other mutations to elucidate the pathogenic mechanisms of dysgammaglobulinemia in patients with mutations in the XIAP gene. PATIENTS AND METHODS We performed an immunological study of 2 patients carrying the Glu349del mutation and 8 patients with other mutations. RESULTS Flow cytometry showed that the percentage of memory B cells in patients with a mutation in XIAP was lower than that observed in the healthy controls. The patients with the Glu349del mutation had a lower percentage of memory B cells than those with other mutations. Ig production was reduced in patients with the Glu349del mutation. Increased susceptibility to apoptosis was observed in the patients with other mutations. Susceptibility to apoptosis was normal in patients with Glu349del. Microarray analysis indicated that expression of Ig-related genes was reduced in patients with the Glu349del mutation and that the pattern was different from that observed in the healthy controls or patients with other mutations in XIAP. CONCLUSIONS Patients carrying the Glu349del mutation in the XIAP gene may have a clinically and immunologically distinct phenotype from patients with other XIAP mutations. The Glu349del mutation may be associated with dysgammaglobulinemia.
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Finizio S, Foerster M, Krüger B, Vaz CAF, Miyawaki T, Mawass MA, Peña L, Méchin L, Hühn S, Moshnyaga V, Büttner F, Bisig A, Le Guyader L, El Moussaoui S, Valencia S, Kronast F, Eisebitt S, Kläui M. Domain wall transformations and hopping in La(0.7)Sr(0.3)MnO(3) nanostructures imaged with high resolution x-ray magnetic microscopy. J Phys Condens Matter 2014; 26:456003. [PMID: 25336527 DOI: 10.1088/0953-8984/26/45/456003] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We investigate the effect of electric current pulse injection on domain walls in La(0.7)Sr(0.3)MnO(3) (LSMO) half-ring nanostructures by high resolution x-ray magnetic microscopy at room temperature. Due to the easily accessible Curie temperature of LSMO, we can employ reasonable current densities to induce the Joule heating necessary to observe effects such as hopping of the domain walls between different pinning sites and nucleation/annihilation events. Such effects are the dominant features close to the Curie temperature, while spin torque is found to play a small role close to room temperature. We are also able to observe thermally activated domain wall transformations and we find that, for the analyzed geometries, the vortex domain wall configuration is energetically favored, in agreement with micromagnetic simulations.
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Affiliation(s)
- S Finizio
- Institut für Physik, Johannes Gutenberg-Universität, Staudingerweg 7, 55128 Mainz, Germany
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Koura U, Sakaki-Nakatsubo H, Otsubo K, Nomura K, Oshima K, Ohara O, Wada T, Yachie A, Imai K, Morio T, Miyawaki T, Kanegane H. Successful treatment of systemic cytomegalovirus infection in severe combined immunodeficiency using allogeneic bone marrow transplantation followed by adoptive immunotherapy. J Investig Allergol Clin Immunol 2014; 24:200-202. [PMID: 25011361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
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14
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Lee YW, Yang EA, Kang HJ, Yang X, Mitsuiki N, Ohara O, Miyawaki T, Kanegane H, Lee JH. Novel mutation of IL2RG gene in a Korean boy with X-linked severe combined immunodeficiency. J Investig Allergol Clin Immunol 2013; 23:65-67. [PMID: 23653982] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Affiliation(s)
- Y W Lee
- Department of Pediatrics, Chungnam National University School of Medicine, Daejeon, Korea
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Kowa H, Miyawaki T, Sekiguchi K, Kanda F, Toda T. Treatment for Stroke-Like Episodes in MEALS by Edaravone (P04.162). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p04.162] [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] Open
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Kowa H, Miyawaki T, Sekiguchi K, Kanda F, Toda T. Treatment for Stroke-Like Episodes in MEALS by Edaravone (IN7-1.002). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.in7-1.002] [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] Open
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Adachi Y, Okabe Y, Itazawa T, Yoshida K, Ohya Y, Odajima H, Akasawa A, Miyawaki T. Impact Of Rhinitis On Asthma In Japanese School Children. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.317] [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: 11/16/2022]
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18
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Tsurumaru Y, Sasaki K, Miyawaki T, Uto Y, Momma T, Umemoto N, Momose M, Yazaki K. HlPT-1, a membrane-bound prenyltransferase responsible for the biosynthesis of bitter acids in hops. Biochem Biophys Res Commun 2012; 417:393-8. [DOI: 10.1016/j.bbrc.2011.11.125] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 11/23/2011] [Indexed: 11/29/2022]
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Mohammadzadeh I, Yeganeh M, Aghamohammadi A, Parvaneh N, Behniafard N, Abolhassani H, Tabassomi F, Hemmat M, Kanegane H, Miyawaki T, Ohara O, Rezaei N. Severe primary antibody deficiency due to a novel mutation of mu heavy chain. J Investig Allergol Clin Immunol 2012; 22:78-79. [PMID: 22448464] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Affiliation(s)
- I Mohammadzadeh
- Department of Pediatrics, Amirkola Hospital, Babol University of Medical Sciences, Babol, Iran
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Itazawa T, Adachi Y, Adachi Y, Ito Y, Okabe Y, Yoshida K, Ohya Y, Odajima H, Akasawa A, Miyawaki T. Association of Body Composition with Asthma Control in Preschool Children. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.332] [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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Makino T, Horikawa S, Hongo K, Ichida F, Furuichi M, Ueda C, Miyawaki T, Shimizu T. Livedo racemosa presenting with congenital fibromuscular dysplasia. Br J Dermatol 2010; 163:1362-4. [PMID: 20731652 DOI: 10.1111/j.1365-2133.2010.10003.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Adachi Y, Itazawa T, Matsuno M, Adachi Y, Ito Y, Okabe Y, Yoshida K, Akasawa A, Miyawaki T. Association of Obesity with Lung Function of Symptom-free Asthmatic Children. J Allergy Clin Immunol 2010. [DOI: 10.1016/j.jaci.2009.12.218] [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: 10/19/2022]
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Shiozaki A, Yoneda N, Yoneda S, Soeda Y, Hamashima T, Ishizawa S, Tamura K, Horikawa S, Higashiyama H, Yoshida T, Miyawaki T, Saito S. Gestational choriocarcinoma in one placenta of dichorionic diamniotic twins who showed severe anemia. Placenta 2009; 30:821. [PMID: 19608272 DOI: 10.1016/j.placenta.2009.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Accepted: 06/15/2009] [Indexed: 11/28/2022]
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Adachi Y, Okabe Y, Itazawa T, Adachi Y, Miyawaki T, Odajima H, Ohya Y, Akasawa A. Validity Of A Questionnaire For Diagnosis Of Asthma In Younger Children. J Allergy Clin Immunol 2009. [DOI: 10.1016/j.jaci.2008.12.419] [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: 10/21/2022]
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Maeda S, Miyawaki T, Higuchi H, Shimada M. Effect of flumazenil on disturbance of equilibrium function induced by midazolam. Anesth Prog 2008; 55:73-7. [PMID: 18788841 DOI: 10.2344/0003-3006-55.3.73] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Accepted: 03/20/2008] [Indexed: 11/11/2022] Open
Abstract
Benzodiazepines in intravenous sedation are useful, owing to their outstanding amnesic effect when used for oral surgery as well as dental treatments on patients with intellectual disability or dental phobia. However, compared with propofol, the effect of benzodiazepine lasts longer and may impede discharge, especially when it is administered orally because of fear of injections. Although flumazenil antagonizes the effects of benzodiazepine quickly, its effect on the equilibrium function (EF) has never been tested. Since EF is more objective than other tests, the purpose of this study is to assess the sedation level and EF using a computerized static posturographic platform. The collection of control values was followed by the injection of 0.075 mg/kg of midazolam. Thirty minutes later, 0.5 mg or 1.0 mg of flumazenil was administered, and the sedation level and EF were measured until 150 minutes after flumazenil administration. Flumazenil antagonized sedation, and there was no apparent resedation; however, it failed to antagonize the disturbance in EF. This finding may be due to differences in the difficulty of assessing the sedation level and performing the EF test, and a greater amount of flumazenil may effectively antagonize the disturbance in EF.
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Affiliation(s)
- S Maeda
- Department of Dental Anesthesiology, Okayama University Dental Hospital, Japan.
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Affiliation(s)
- A Mori
- Department of Gastroenterology, Inuyama Chuo Hospital, Aichi, Japan.
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Kanegane H, Agematsu K, Futatani T, Sira MM, Suga K, Sekiguchi T, van Zelm MC, Miyawaki T. Novel mutations in a Japanese patient with CD19 deficiency. Genes Immun 2007; 8:663-70. [PMID: 17882224 DOI: 10.1038/sj.gene.6364431] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [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: 02/07/2023]
Abstract
Common variable immunodeficiency (CVID) is a heterogeneous disorder characterized by recurrent bacterial infections, hypogammaglobulinemia and low to normal numbers of circulating B cells. Mutations in the ICOS, TACI and CD19 genes have recently been identified in <10% of CVID patients. We, herein, describe two novel CD19 gene disruptions in an 8-year-old Japanese boy, who had been clinically diagnosed as having CVID at the age of 5 years. Flow-cytometric analysis demonstrated absence of CD19 and reduced CD21 expression on CD20-postive peripheral blood B cells. Mutation analysis of CD19 revealed a mutation in the splice acceptor site of intron 5 (IVS5-1G>T) of the maternal allele, resulting in skipping of exon 6, and a truncated protein product. The paternal allele was disrupted by a gross deletion encompassing at least the ATP2A1, CD19 and NFATC2IP genes. The patient had a small number of IgD(-) CD27(+) memory B cells, in which somatic mutation were detected. His B cells showed substantial proliferation upon stimulation, but reduced IgG and IgA production in vitro. These findings extend the mutation spectrum of the CD19 deficiency to four, and confirm the homogeneity of the CD19 deficiency as a unique type of CVID.
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Affiliation(s)
- H Kanegane
- Department of Pediatrics, Graduate School of Medicine, University of Toyama, Toyama, Japan.
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Barakat K, Lobocki C, Moreira A, Miyawaki T, Elmazar H, Jackson I. Contraction osteomodelling: new technique for reducing growing craniofacial bones using in vitro model. Int J Oral Maxillofac Surg 2007. [DOI: 10.1016/j.ijom.2007.08.072] [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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Amoras ALB, da Silva MTN, Zollner RL, Kanegane H, Miyawaki T, Vilela MMS. Expression of Fc gamma and complement receptors in monocytes of X-linked agammaglobulinaemia and common variable immunodeficiency patients. Clin Exp Immunol 2007; 150:422-8. [PMID: 17900300 PMCID: PMC2219363 DOI: 10.1111/j.1365-2249.2007.03512.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/29/2022] Open
Abstract
Recently we reported that monocyte phagocytosis and chemotaxis are impaired in X-linked agammaglobulinaemia (XLA) and common variable immunodeficiency (CVI) patients. Few data exist on the in vivo expression of receptors for the constant region of immunoglobulin (IgG) (Fc gammaR) and complement receptors (CR) in these patients. The objective of this study was to investigate the expression of Fc gammaR and CR on monocytes from XLA and CVI patients and compare it to that of healthy controls. Whole blood samples were obtained from 10 patients with XLA, 12 with CVI and 18 healthy controls. Monocyte phenotype was determined by flow cytometry with gating on CD14+ cells. Surface expression of Fc gammaRI (CD64), Fc gammaRII (CD32) and Fc gammaRIII (CD16), CR1 (CD35) and CR3 (CD11b and CD18) was measured by determination of the proportion of CD14+ cells positive for each receptor and by receptor density. Compared to controls, a significantly higher percentage of CD16 and CD35+ monocytes from XLA (P = 0.002 and P = 0.007, respectively) were observed. The relative fluorescence intensity (RFI) expression of Fc gammaRII (CD32) and Fc gammaRIII (CD16) were significantly lower on CVI monocytes compared to controls (P = 0.001 and P = 0.035, respectively). XLA patients, who have a reduction of Bruton's tyrosine kinase (Btk), showed normal or increased percentages of monocytes expressing Fc gamma and complement receptors. CVI patients, who have normal expression of Btk, showed reduced expression of CD16 and CD32 on monocytes. Inefficient chemotaxis and phagocytosis, reported previously in XLA patients, could be due to defects of cytoplasmatic transduction mechanisms.
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Affiliation(s)
- A L B Amoras
- Center for Investigation in Pediatrics, Department of Pediatrics, State University of Campinas Medical School, Campinas, SP, Brazil
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Ito Y, Adachi Y, Itazawa T, Saito K, Uese K, Ichida F, Miyawaki T. Comorbidity of Life-Threatening Arrhythmia in Children with Asthma. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.12.031] [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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Matsukura H, Toyoshima S, Inaba S, Arai M, Miyawaki T, Miyamoto M. Persisting mesonephric duct in a neonate with ipsilateral renal agenesis. Clin Nephrol 2006; 65:150-2. [PMID: 16509470 DOI: 10.5414/cnp65150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Itazawa T, Adachi Y, Okabe Y, Adachi Y, Nakabayashi M, Harai T, Miya K, Uese K, Miyawaki T. A Child Case of Anaphylaxis to Polyvinylpyrrolidone Containing Medicines. J Allergy Clin Immunol 2006. [DOI: 10.1016/j.jaci.2005.12.535] [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] [Indexed: 10/24/2022]
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Matsukura H, Watanabe S, Ito Y, Kanegane H, Miyawaki T, Shinozaki K. Immunoglobulin A nephropathy associated with cyclic neutropenia. Clin Nephrol 2005; 63:502-4. [PMID: 15960156 DOI: 10.5414/cnp63502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Maeda S, Kita F, Miyawaki T, Takeuchi K, Ishida R, Egusa M, Shimada M. Assessment of patients with intellectual disability using the International Classification of Functioning, Disability and Health to evaluate dental treatment tolerability. J Intellect Disabil Res 2005; 49:253-259. [PMID: 15816812 DOI: 10.1111/j.1365-2788.2005.00644.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
BACKGROUND Patients with serious intellectual disability (ID) are occasionally unable to tolerate dental treatment when intravenous sedation or general anaesthesia (IVS/GA) is involved. In order to make a decision regarding the application of IVS/GA, the International Classification of Functioning, Disability and Health (ICF) is useful. Therefore, in this study, a set of codes involved in dental problems were chosen from the ICF, and patients with ID who could tolerate dental treatments were compared with those who could not. METHODS From preliminary interviews of six patients with ID, 16 codes were chosen, and an objective five-rank scale was then constructed for use with all chosen codes. Forty-nine ID patients who visited the Okayama University Hospital for dental treatment between January and April 2003 were evaluated. Facility workers were interviewed according to the code set chosen. The participants were then divided into two subgroups depending on their tolerability of dental treatment. The results of these groups for all 16 codes were then compared. RESULTS Of the 49 patients interviewed, 23 were able to tolerate the dental treatment. In the 'Activities & Participation' section of the ICF, the tolerable group showed lower disability levels with regard to d110 Watching, d540 Dressing and d550 Eating. In other sections, there were no significant differences between the groups. The code set chosen in this study and the five-rank scales in each code were useful as they enabled easy interviewing. CONCLUSIONS The ICF was raised as a possibility for considering the application of IVS/GA for dental treatment on patients with ID. For clinical use of the ICF, it is recommended that significant codes should be selected and that the five-rank scale is used so that more objective results are obtained from interviews.
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Affiliation(s)
- S Maeda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan.
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Alangari A, Abobaker A, Kanegane H, Miyawaki T. X-linked lymphoproliferative disease with Growth Hormone deficiency. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.341] [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: 10/25/2022]
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Adachi Y, Adachi Y, Nakabayashi M, Fuchizawa T, Itazawa T, Murakami G, Miyawaki T. Food allergic reactions in kindergartens in Japan. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.989] [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: 10/25/2022]
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Matsukura H, Satoh H, Arai M, Higuchi A, Miyawaki T, Izumino K. Secondary erythrocytosis associated with distal renal tubular acidosis. Clin Nephrol 2004; 62:397-9. [PMID: 15571188 DOI: 10.5414/cnp62397] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
AIMS Diagnosis and classification of renal tubular acidosis (RTA) have traditionally been made on the basis of functional studies. Despite recent expanding knowledge about the molecular abnormalities involved in renal bicarbonate (HCO3-) and H+ transport, the pathophysiology of secondary erythrocytosis in association with distal RTA remains obscure. CASE HISTORY A 2-month-old boy with severe hyperchloremic metabolic acidosis with positive urine anion gap was diagnosed with distal RTA. Replacement therapy with sodium bicarbonate and potassium citrate succeeded in improving his metabolic acidosis and growth. His renal function remained normal. He had persistent erythrocytosis. CONCLUSION Secondary erythrocytosis is a rarely reported association of distal RTA. It may increase the risk of thromboembolism.
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Affiliation(s)
- H Matsukura
- Department of Pediatrics, Saiseikai Toyama Hospital, Toyama, Japan.
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Miyawaki T, Kohjitani A, Maeda S, Egusa M, Mori T, Higuchi H, Kita F, Shimada M. Intravenous sedation for dental patients with intellectual disability. J Intellect Disabil Res 2004; 48:764-768. [PMID: 15494066 DOI: 10.1111/j.1365-2788.2004.00598.x] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
BACKGROUND The poor quality of oral health care for people with intellectual disability (ID) has been recognized, and the strong fears about dental treatment suggested as a major reason for disturbances of visits to dentists by such patients. Intravenous sedation is a useful method for relieving the anxiety and fear of such patients about dental treatment, and is frequently essential for ID patients undergoing dental treatment. However, decision regarding the dose of sedative required to be administered for an adequate level of sedation is difficult because the effect of sedation cannot be adequately assessed in patients with severe ID. As an appropriate sedative dose for dental patients with ID has not been fully established, we investigated sedative doses required and the effect of sedation in patients with ID, compared with other dental patients. METHODS We reviewed the anaesthetic records of dental patients with ID (73 cases) and other dental patients (19 cases) aged between 20 and 29 years who had undergone intravenous sedation with midazolam and propofol in Okayama University Dental Hospital, from January 2000 to December 2000. Intravenous sedation was induced with a bolus intravenous administration of midazolam (2-3 mg) and maintained with a continuous infusion of propofol. The dose of propofol was titrated to achieve an adequate level of sedation: asleep but responding to painful stimulation. The efficacy of sedation, the required doses of propofol, and the wake-up times were investigated for all subjects. The efficacy of sedation was evaluated by judging whether the patient became cooperative and allowed the dental treatment to be carried out or not. The complications induced by intravenous sedation were also evaluated in each subject. Differences in variables between subjects with ID and other subjects were analysed using the Mann-Whitney U-test. RESULTS Intravenous sedation was effective for dental treatment in all subjects with or without ID. The required dose of propofol in subjects with ID was 4.74 mg/kg/h (2.63-10.33 mg/kg/h), significantly higher than that required for other subjects (3.31, 1.72-4.80 mg/kg/h). Wake-up times of subjects with ID were similar to those of the other subjects. Severe complications were not seen during or after intravenous sedation. CONCLUSION The results of this study show that intravenous sedation is a useful method for dental patients with ID as well as for other dental patients, but indicate that dental patients with ID need higher doses of sedative to obtain an adequate level of sedation.
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Affiliation(s)
- T Miyawaki
- Department of Dental Anesthesiology, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan.
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Abstract
BACKGROUND Alport syndrome is a genetically heterogeneous disorder, but most patients showed the X-linked form resulting from mutations in the COL4A5 gene. A few cases of mosaicism in Alport syndrome have been reported. METHODS We describe the case of an 8-year-old boy with mosaicism in Alport syndrome. Punch skin biopsies were obtained from the patient's mother and monozygotic twin brother. Five biopsy specimens from non-Alport patients were used as controls. Immunohistochemical analysis was performed using rat monoclonal antibodies towards individual collagen IV(NC) domains. RESULTS Kidney tissue of the patient showed: mosaic expression of alpha3(IV), alpha4(IV) and alpha5(IV) in the glomerular basement membrane (GBM), distal tubular basement membrane (TBM) and Bowman's capsule; mosaic alpha6(IV) expression in the Bowman's capsule and distal TBM; and well-preserved expression of alpha1(IV) and alpha2(IV). The patient's skin exhibited mosaic alpha5(IV) expression. His mother and monozygotic twin brother disclosed a normal linear staining of alpha5(IV) in their epidermal basement membranes. This unusual mosaicism of alpha3(IV), alpha4(IV), alpha5(IV) and alpha6(IV) is consistent with a pattern of female heterozygotes of Alport syndrome. CONCLUSION This discordant phenotypic expression of Alport syndrome in monozygotic twins with unaffected parents suggests possible somatic mosaicism in the COL4A5 gene.
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Affiliation(s)
- H Matsukura
- Department of Pediatrics, Saiseikai Toyama Hospital, Japan.
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Gagliardi MC, Finocchi A, Orlandi P, Cursi L, Cancrini C, Moschese V, Miyawaki T, Rossi P. Bruton's tyrosine kinase defect in dendritic cells from X-linked agammaglobulinaemia patients does not influence their differentiation, maturation and antigen-presenting cell function. Clin Exp Immunol 2003; 133:115-22. [PMID: 12823285 PMCID: PMC1808743 DOI: 10.1046/j.1365-2249.2003.t01-1-02178.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [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] [Accepted: 04/04/2003] [Indexed: 11/20/2022] Open
Abstract
X-linked agammaglobulinaemia (XLA) is a primary immunodeficiency disease characterized by very low levels or even absence of circulating antibodies. The immunological defect is caused by deletions or mutations of Bruton's tyrosine kinase gene (Btk), whose product is critically involved in the maturation of pre-B lymphocytes into mature B cells. Btk is expressed not only in B lymphocytes but also in cells of the myeloid lineage, including dendritic cells (DC). These cells are professional antigen presenting cells (APC) that play a fundamental role in the induction and regulation of T-cell responses. In this study, we analysed differentiation, maturation, and antigen-presenting function of DC derived from XLA patients (XLA-DC) as compared to DC from age-matched healthy subjects (healthy-DC). We found that XLA-DC normally differentiate from monocyte precursors and mature in response to lipopolysaccharide (LPS) as assessed by de novo expression of CD83, up-regulation of MHC class II, B7.1 and B7.2 molecules as well as interleukin (IL)-12 and IL-10 production. In addition, we demonstrated that LPS stimulated XLA-DC acquire the ability to prime naïve T cells and to polarize them toward a Th1 phenotype, as observed in DC from healthy donors stimulated in the same conditions. In conclusion, these data indicate that Btk defect is not involved in DC differentiation and maturation, and that XLA-DC can act as fully competent antigen presenting cells in T cell-mediated immune responses.
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Affiliation(s)
- M C Gagliardi
- Division of Immunology and Infectious Diseases, Children's Hospital Bambino Gesù, Department of Paediatrics, University of Rome Tor Vergata, Rome, Italy.
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Miyawaki T, Goodchild AK, Pilowsky PM. Maintenance of sympathetic tone by a nickel chloride-sensitive mechanism in the rostral ventrolateral medulla of the adult rat. Neuroscience 2003; 116:455-64. [PMID: 12559100 DOI: 10.1016/s0306-4522(02)00705-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [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: 10/27/2022]
Abstract
In urethane-anaesthetised artificially ventilated Sprague-Dawley rats, bilateral microinjection of the divalent cation nickel chloride (Ni(2+); 50 mM, 50 nl) into the rostral ventrolateral medulla elicited a dramatic inhibition of splanchnic sympathetic nerve activity (-44+/-6%) and a marked depressor response (-35+/-7 mmHg). Selective blockade of high-voltage activated Ca(2+) channels with omega-agatoxin IVA (P/Q-type), omega-conotoxin GVIA (N-type) and nifedipine (L-type) did not decrease arterial pressure or splanchnic sympathetic nerve activity when injected separately into the rostral ventrolateral medulla, or combined with kynurenate. Injection of caesium chloride or ZD 7288, a blocker of the hyperpolarization-activated cation current, into the rostral ventrolateral medulla had no effect on arterial pressure or splanchnic sympathetic nerve activity. Bilateral microinjection of nickel chloride into the caudal ventrolateral medulla/pre-Bötzinger complex elicited small increases in splanchnic sympathetic nerve activity (+17+/-13%) and arterial pressure (+12+/-4 mmHg). These were substantially smaller than those evoked by blockade of glutamatergic receptors or high-voltage activated Ca(2+) channels in this area. Injection of kynurenate or high-voltage activated Ca(2+) channel blocker, but not Ni(2+), in this area evoked respiratory termination. The results indicate the existence of a distinct mechanism maintaining the tonic activity of rostral ventrolateral medulla presympathetic neurons that is different from that maintaining the tonic activity in the caudal ventrolateral medulla/pre-Bötzinger region. We conclude that ion channels that are sensitive to Ni(2+), but are insensitive to high-voltage activated (L, P/Q, N) Ca(2+) channel blockers, and are located postsynaptically on the presympathetic rostral ventrolateral medulla neurons are responsible for the tonic activity of the presympathetic neurons in rostral ventrolateral medulla. These channels could well be the low-voltage-activated (or T-type) Ca(2+) channels although other conductances cannot be conclusively excluded.
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Affiliation(s)
- T Miyawaki
- Department of Physiology, Northern Clinical School and School of Biomedical Sciences, University of Sydney, 2006, Australia
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Itazawa T, Adachi Y, Okabe Y, Hamamichi M, Adachi YS, Toyoda M, Morohashi M, Miyawaki T. Developmental changes in interleukin-12-producing ability by monocytes and their relevance to allergic diseases. Clin Exp Allergy 2003; 33:525-30. [PMID: 12680871 DOI: 10.1046/j.1365-2222.2003.01608.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [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: 11/20/2022]
Abstract
BACKGROUND The T helper type-2 (Th2)-dominated situation can be observed in allergic diseases such as asthma or atopic dermatitis. A reduced ability to produce IL-12, which is a key cytokine for the induction of Th1 responses, has been proposed to lead to aberrant Th2 development in these disease conditions. OBJECTIVE This study was intended to examine how IL-12-producing ability might associate with allergic diseases as a function of age. METHODS IL-12 production by monocytes at various ages was assessed in patients with bronchial asthma and/or atopic dermatitis (n = 100) in comparison with non-allergic control subjects (n = 144). Whole blood cells were stimulated with lipopolysaccharide (LPS) after priming with IFN-gamma, then intracellular cytokine expression of IL-12 and IL-8 as a control cytokine of CD14-positive cells was assessed by flow cytometric analysis. RESULTS In the control subjects, the ability of monocytes to produce IL-12 was negligible at birth and gradually increased with advancing age, whereas IL-8 production was intense throughout the human life. At more than 7 years of age, IL-12 production of patients with allergic diseases was significantly lower compared with that of control subjects. The unexpected finding was that infants and children below 6 years of age with allergic diseases tended to produce more IL-12 compared with age-matched controls. In this young group, it was noted that enhanced IL-12 production by monocytes was especially observed in allergic patients with specific IgE antibodies against some food allergens. Significant inverse relationships between serum IgE levels and IL-12-producing ability were found in the teenage and adult groups, but not in the younger children. CONCLUSION IL-12 appeared to play different roles in the pathogenesis of allergic diseases between younger and older ages.
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Affiliation(s)
- T Itazawa
- Department of Pediatrics, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama, Japan
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Elmazar H, Jackson IT, Degner D, Miyawaki T, Barakat K, Andrus L, Bradford M. The efficacy of Gore-Tex vs. hydroxyapatite and bone graft in reconstruction of orbital floor defects. Eur J Plast Surg 2003. [DOI: 10.1007/s00238-002-0448-7] [Citation(s) in RCA: 7] [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: 10/20/2022]
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Matsukura H, Ohtsuki A, Fuchizawa T, Miyawaki T. Acute poststreptococcal glomerulonephritis mimicking Henoch-Schönlein purpura. Clin Nephrol 2003; 59:64-5. [PMID: 12572934 DOI: 10.5414/cnp59064] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Amoras AL, Kanegane H, Miyawaki T, Vilela MM. Defective Fc-, CR1- and CR3-mediated monocyte phagocytosis and chemotaxis in common variable immunodeficiency and X-linked agammaglobulinemia patients. J Investig Allergol Clin Immunol 2003; 13:181-8. [PMID: 14635468] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023] Open
Abstract
Blood monocyte phagocytic functions were evaluated by chemotaxis, phagocytosis, and superoxide anion production in nine patients with common variable immunodeficiency (CVI), eight patients with X-linked agammaglobulinemia (XLA), and in 17 normal subjects. Further laboratory diagnosis included the determination of the Bruton's tyrosine kinase (Btk) protein expression in monocytes using flow cytometry. The analysis of monocyte phagocytic function demonstrated that CR3-, CR1-, and Fc-mediated phagocytosis (p = 0.0001) were significantly decreased in CVI and XLA patients, and chemotaxis of monocytes (p = 0.0082) was reduced in XLA patients. Superoxide anion production, however, did not differ between the CVI, XLA, and the control groups. The cytoplasmic expression of Btk protein in monocytes was normal in CVI patients and decreased or not detected in XLA patients. It is proposed that impaired chemotaxis and phagocytosis by monocytes may be a characteristic of the innate immune system in CVI and XLA patients, providing a new direction for the physiopathology of these immunodeficiencies.
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Affiliation(s)
- A L Amoras
- Department of Pediatrics, Center for Investigation in Pediatrics-CIPED, School of Medical Sciences, State University of Campinas, Unicamp, Brazil
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Shibata M, Moritani T, Miyawaki T, Hayashi T, Nakao K. Exercise prescription based upon cardiac vagal activity for middle-aged obese women. Int J Obes (Lond) 2002; 26:1356-62. [PMID: 12355331 DOI: 10.1038/sj.ijo.0802131] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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] [Received: 06/27/2001] [Revised: 02/27/2002] [Accepted: 05/27/2002] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The purposes of this study were to examine a new method to determine exercise intensity for obese people based on the cardiac vagal activity and to determine the effect of this approach on myocardial stress. SUBJECTS Forty-three middle aged obese female volunteers (age 43.7+/-6.5 y; height 1.56+/-0.05 m; body mass 66.5+/-9.3 kg; body mass index 27.3+/-2.8 kg m(2); percentage body fat 40.7+/-5.9%). MEASUREMENT In the first experiment, 43 subjects performed a ramp exercise test on a bicycle ergometer with measurement of ECG and gas exchange parameters. In the second experiment, 11 subjects performed 45 min of constant walking exercise on a treadmill at a level corresponding to exercise intensity determined by vagal activity obtained from a ramp bicycle test. Blood pressure, endothelin 1 (ET-1), catecholamine, atrial natriuretic peptide (ANP), and brain natriuretic peptide (BNP) were measured before and after exercise. RESULTS The heart rate variability power decreased with increasing work rate, and changed little after reaching individual-specific work rate. We presumed that vagal activity disappeared at this point and that the heart rate at this exercise intensity was determined as the vagal activity threshold (T(VA)). The results showed a significant positive correlation (r=0.742, P<0.0001) between T(VA) and ventilatory threshold (VT) heart rates, although the mean heart rate of T(VA) (114.3+/-8.5 beats/min) was significantly lower (P<0.001) than that at VT (119.0+/-11.7), suggesting the cardiac vagal withdrawal occurred prior to the onset of lactate acidosis (lactic acid accumulation). Furthermore, exercise intervention experiment at T(VA) indicated that ET-1, catecholamine and BNP levels were not significantly different before and after exercise. However, ANP levels increased significantly after exercise (pre-exercise 18.6+/-5.38 vs post-exercise 44.0+/-24.87 pg/ml, P<0.001), which in turn brought about a significant post-exercise reduction in the blood pressure (SBP 117.6+/-13.7 vs 110.5+/-7.4 mmHg, P<0.05; DBP 78.6+/-6.7 vs 73.5+/-6.6 mmHg, P<0.01). CONCLUSION Our data suggest that it is possible to determine the exercise intensity (T(VA)) on the basis of cardiac vagal response. These results also suggest that exercise at T(VA) level is a safe exercise intensity in the light of cardiac stress, and that T(VA) may be recommended for obese people who might possess lower cardiac sympatho-vagal activity.
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Affiliation(s)
- M Shibata
- Laboratory of Health and Sports Science, Faculty of Nursing, College of Nursing Art and Science, Hyogo, Japan.
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Miyawaki T, Masuzaki H, Ogawa Y, Hosoda K, Nishimura H, Azuma N, Sugawara A, Masuda I, Murata M, Matsuo T, Hayashi T, Inoue G, Yoshimasa Y, Nakao K. Clinical implications of leptin and its potential humoral regulators in long-term low-calorie diet therapy for obese humans. Eur J Clin Nutr 2002; 56:593-600. [PMID: 12080397 DOI: 10.1038/sj.ejcn.1601363] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 06/06/2001] [Revised: 10/04/2001] [Accepted: 10/17/2001] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To address the clinical implications of leptin and to re-examine the relationship between leptin and its potential humoral regulators such as insulin, nonesterified fatty acids (NEFA) and triiodothyronine (T3) in low-calorie diet (LCD) for obese humans. DESIGN Longitudinal study. SETTING University and foundation hospitals. SUBJECTS Ten obese men and 10 premenopausal obese women. INTERVENTIONS Five men and five women took 800 kcal/day LCD and another five men and five women took 1400 kcal/day balanced deficit diet (BDD) during 4 weeks. RESULTS Plasma leptin levels in the LCD group decreased more markedly (46.2+/-14.6 to 13.2+/-3.6 ng/ml) than that expected for the decrement in percentage fat (39.0+/-1.7 to 35.9+/-1.7%) and body mass index (BMI; 35.4+/-2.4 to 33.1+/-2.2 kg/m(2)), while that in the BDD group did not decrease significantly (14.9+/-3.5 to 13.4+/-2.8 ng/ml). The ratio of the decrease in leptin levels to that of BMI during the first week was significantly greater than that during the following 3 weeks (39.5+/-2.7 vs 29.3+/-2.1%, P=0.017). The plasma insulin and T3 levels also fell substantially in the first week and continued to decrease during the entire course. Plasma leptin levels measured weekly in each subject were correlated well with insulin (r=0.586, P=0.0003) and T3 (r=0.785, P=0.0004). Multiple regression analyses after adjustment for the time course and BMI revealed that serum levels of T3 were independently correlated with plasma leptin levels (r=0.928, P<0.0001). The plasma NEFA level was markedly elevated during the first 2 weeks and decreased thereafter. CONCLUSIONS A rapid fall in leptin during the first week of LCD, coordinated by insulin, T3 and NEFA, should be beneficial for responding to decreased energy intake. Inversely, in view of the powerful effect of leptin on energy dissipation, the present findings suggest the potential usefulness of leptin in combination with caloric restriction for the treatment of obesity. SPONSORSHIP The Ministry of Education, Culture, Sports, Science and Technology of Japan and the Ministry of Health, Labour and Welfare of Japan.
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Affiliation(s)
- T Miyawaki
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Miyawaki T, Goodchild AK, Pilowsky PM. Activation of mu-opioid receptors in rat ventrolateral medulla selectively blocks baroreceptor reflexes while activation of delta opioid receptors blocks somato-sympathetic reflexes. Neuroscience 2002; 109:133-44. [PMID: 11784705 DOI: 10.1016/s0306-4522(01)00439-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [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: 11/20/2022]
Abstract
The effects of activation of mu and delta-opioid receptors in the rostral ventrolateral medulla (RVLM) on somato-sympathetic, baroreceptor and chemoreceptor reflexes, as well as respiratory rhythmicity in sympathetic nerves, were examined in urethane anaesthetized (1.1-1.2 g/kg) and artificially ventilated Sprague-Dawley rats. Microinjection of the delta-opioid receptor agonist [D-Pen(2,5)]-enkephalin (DPDPE; 8 mM, 50 nl) bilaterally into the RVLM potently inhibited the post-inspiratory-related burst discharges of lumbar sympathetic nerve activity (LSNA) but had only limited effects on splanchnic sympathetic nerve activity (SSNA) and phrenic nerve discharge. Injection of DPDPE into the RVLM strongly attenuated the somato-sympathetic reflex (approximately 50-80%) evoked in the lumbar sympathetic nerve and splanchnic sympathetic nerve by tibial nerve stimulation but had no effect on baroreceptor reflexes and chemoreceptor reflexes evoked by aortic nerve stimulation and brief hypoxia, respectively. Injection of the mu-opioid receptor agonist, [D-Ala(2),N-Me-Phe(4),Gly-ol(5)]-enkephalin (DAMGO; 4 mM, 50 nl), also elicited a greater inhibition of LSNA than SSNA accompanied by an abolition of phrenic nerve discharge. Injection of DAMGO inhibited the baroreceptor reflex without significant effect on either the somato-sympathetic or the chemoreceptor reflexes. We propose that opioid peptides diminish specific excitatory and inhibitory inputs to the presympathetic neurons in RVLM via distinct presynaptic receptor subclasses.
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MESH Headings
- Action Potentials/drug effects
- Action Potentials/physiology
- Analgesics, Opioid/pharmacology
- Animals
- Baroreflex/drug effects
- Baroreflex/physiology
- Blood Pressure/drug effects
- Blood Pressure/physiology
- Cardiovascular Physiological Phenomena/drug effects
- Electric Stimulation
- Enkephalin, Ala(2)-MePhe(4)-Gly(5)-/pharmacology
- Enkephalin, D-Penicillamine (2,5)-/pharmacology
- Male
- Medulla Oblongata/cytology
- Medulla Oblongata/drug effects
- Medulla Oblongata/metabolism
- Narcotic Antagonists/pharmacology
- Neural Inhibition/drug effects
- Neural Inhibition/physiology
- Neurons/cytology
- Neurons/drug effects
- Neurons/metabolism
- Phrenic Nerve/drug effects
- Phrenic Nerve/physiology
- Rats
- Rats, Sprague-Dawley
- Receptors, Opioid, delta/agonists
- Receptors, Opioid, delta/metabolism
- Receptors, Opioid, mu/agonists
- Receptors, Opioid, mu/metabolism
- Respiratory Physiological Phenomena/drug effects
- Sympathetic Fibers, Postganglionic/drug effects
- Sympathetic Fibers, Postganglionic/physiology
- Sympathetic Nervous System/cytology
- Sympathetic Nervous System/drug effects
- Sympathetic Nervous System/metabolism
- Synaptic Transmission/drug effects
- Synaptic Transmission/physiology
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Affiliation(s)
- T Miyawaki
- Department of Physiology, University of Sydney, Sydney, NSW 2006, Australia
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