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Miura S, Watanabe E, Senzaki K, Hiruki S, Matsumoto S, Morikawa T, Uchiyama Y, Kurata S, Ochi M, Ohyagi Y, Shibata H. Episodic ataxia type 2 with a novel missense variant (Leu602Arg) in CACNA1A. Hum Genome Var 2024; 11:3. [PMID: 38221525 PMCID: PMC10788331 DOI: 10.1038/s41439-023-00261-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/30/2023] [Accepted: 12/04/2023] [Indexed: 01/16/2024] Open
Abstract
Autosomal dominant episodic ataxia type 2 (EA2) is caused by variants in CACNA1A. We examined a 20-year-old male with EA symptoms from a Japanese family with hereditary EA. Cerebellar atrophy was not evident, but single photon emission computed tomography showed cerebellar hypoperfusion. We identified a novel nonsynonymous variant in CACNA1A, NM_001127222.2:c.1805T>G (p.Leu602Arg), which is predicted to be functionally deleterious; therefore, this variant is likely responsible for EA2 in this pedigree.
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Affiliation(s)
- Shiroh Miura
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
| | - Emina Watanabe
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Kensuke Senzaki
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Shigeyoshi Hiruki
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Sayaka Matsumoto
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Takuya Morikawa
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Yusuke Uchiyama
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, Japan
| | - Seiji Kurata
- Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, Japan
| | - Masayuki Ochi
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Yasumasa Ohyagi
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Hiroki Shibata
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka, Japan
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2
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Tabata E, Kobayashi I, Morikawa T, Kashimura A, Bauer PO, Oyama F. Evolutionary activation of acidic chitinase in herbivores through the H128R mutation in ruminant livestock. iScience 2023; 26:107254. [PMID: 37502259 PMCID: PMC10368815 DOI: 10.1016/j.isci.2023.107254] [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: 11/14/2022] [Revised: 05/04/2023] [Accepted: 06/27/2023] [Indexed: 07/29/2023] Open
Abstract
Placental mammals' ancestors were insectivores, suggesting that modern mammals may have inherited the ability to digest insects. Acidic chitinase (Chia) is a crucial enzyme hydrolyzing significant component of insects' exoskeleton in many species. On the other hand, herbivorous animal groups, such as cattle, have extremely low chitinase activity compared to omnivorous species, e.g., mice. The low activity of cattle Chia has been attributed to R128H mutation. The presence of either of these amino acids correlates with the feeding behavior of different bovid species with R and H determining the high and low enzymatic activity, respectively. Evolutionary analysis indicated that selective constraints were relaxed in 67 herbivorous Chia in Cetartiodactyla. Despite searching for another Chia paralog that could compensate for the reduced chitinase activity, no active paralogs were found in this order. Herbivorous animals' Chia underwent genetic alterations and evolved into a molecule with low activity due to the chitin-free diet.
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Affiliation(s)
- Eri Tabata
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan
- Research Fellow of Japan Society for the Promotion of Science (PD), Koujimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Ikuto Kobayashi
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan
| | - Takuya Morikawa
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan
| | - Akinori Kashimura
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan
| | - Peter O. Bauer
- Bioinova a.s., Videnska 1083, 142 00 Prague, Czech Republic
| | - Fumitaka Oyama
- Department of Chemistry and Life Science, Kogakuin University, Hachioji, Tokyo 192-0015, Japan
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3
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Morikawa T, Takahashi M, Izumi Y, Bamba T, Moriyama K, Hattori G, Fujioka R, Miura S, Shibata H. Oleic Acid-Containing Phosphatidylinositol Is a Blood Biomarker Candidate for SPG28. Biomedicines 2023; 11:biomedicines11041092. [PMID: 37189713 DOI: 10.3390/biomedicines11041092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/28/2023] [Accepted: 04/01/2023] [Indexed: 04/08/2023] Open
Abstract
Hereditary spastic paraplegia is a genetic neurological disorder characterized by spasticity of the lower limbs, and spastic paraplegia type 28 is one of its subtypes. Spastic paraplegia type 28 is a hereditary neurogenerative disorder with an autosomal recessive inheritance caused by loss of function of DDHD1. DDHD1 encodes phospholipase A1, which catalyzes phospholipids to lysophospholipids such as phosphatidic acids and phosphatidylinositols to lysophosphatidic acids and lysophoshatidylinositols. Quantitative changes in these phospholipids can be key to the pathogenesis of SPG28, even at subclinical levels. By lipidome analysis using plasma from mice, we globally examined phospholipids to identify molecules showing significant quantitative changes in Ddhd1 knockout mice. We then examined reproducibility of the quantitative changes in human sera including SPG28 patients. We identified nine kinds of phosphatidylinositols that show significant increases in Ddhd1 knockout mice. Of these, four kinds of phosphatidylinositols replicated the highest level in the SPG28 patient serum. All four kinds of phosphatidylinositols contained oleic acid. This observation suggests that the amount of oleic acid-containing PI was affected by loss of function of DDHD1. Our results also propose the possibility of using oleic acid-containing PI as a blood biomarker for SPG28.
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Affiliation(s)
- Takuya Morikawa
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masatomo Takahashi
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Yoshihiro Izumi
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takeshi Bamba
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kosei Moriyama
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
- Department of Nutritional Sciences, Nakamura Gakuen University, 5-7-1, Befu, Jonan-ku, Fukuoka 814-0198, Japan
| | - Gohsuke Hattori
- Department of Neurosurgery, Kurume University School of Medicine, 67 Asahi-Machi, Kurume, Fukuoka 830-0011, Japan
| | - Ryuta Fujioka
- Department of Food and Nutrition, Beppu University Junior College, 82, Kitaishigaki, Oita 874-8501, Japan
| | - Shiroh Miura
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, 454, Shitsukawa, Toon 791-0295, Japan
| | - Hiroki Shibata
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Nakata M, Yokota N, Tabata K, Morikawa T, Shibata H, Kenzaka T. Hereditary Congenital Methemoglobinemia Diagnosed at the Age of 79 Years: A Case Report. Medicina (Kaunas) 2023; 59:medicina59030615. [PMID: 36984616 PMCID: PMC10058039 DOI: 10.3390/medicina59030615] [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] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
Background: Cardiopulmonary disorders are the most common cause of central cyanosis, and methemoglobinemia is often overlooked in the differential diagnosis of patients with central cyanosis. In most cases, methemoglobinemia is acquired and hereditary congenital methemoglobinemia is rare. Only a few case reports of congenital methemoglobinemia can be found in PubMed. To date, only four cases of congenital methemoglobinemia diagnosed after the age of 50 years have been reported. Case Presentation: A 79-year-old Japanese woman presented at our hospital with the chief complaints of dyspnea and cyanosis. She exhibited cyanosis of the lips and extremities, and her SpO2 was 80%, with oxygen administration at 5 L/min. Blood gas analysis revealed a PaO2 of 325.4 mmHg and methemoglobin level of 36.9%. The SpO2 and PaO2 values were dissociated, and methemoglobin levels were markedly elevated. Genetic analysis revealed a nonsynonymous variant in the gene encoding nicotinamide adenine dinucleotide cytochrome (NADH) B5 reductase 3 (CYB5R3), and the patient was diagnosed with congenital methemoglobinemia. Conclusions: It is important to consider methemoglobinemia in the differential diagnosis of patients with central cyanosis. At 79 years of age, our patient represents the oldest patient with this diagnosis. This report indicates that it is crucial to consider the possibility of methemoglobinemia regardless of the patient's age.
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Affiliation(s)
- Marohito Nakata
- Department of Cardiology, Urasoe General Hospital, Urasoe 901-2132, Japan
| | - Naoko Yokota
- Department of Cardiology, Urasoe General Hospital, Urasoe 901-2132, Japan
| | - Kazuhiko Tabata
- Department of Internal Medicine, Naha City Hospital, Naha 902-8511, Japan
| | - Takuya Morikawa
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hiroki Shibata
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Tsuneaki Kenzaka
- Division of Community Medicine and Career Development, Kobe University Graduate School of Medicine, Kobe 652-0032, Japan
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Etani T, Morikawa T, Gonda M, Aoki M, Nagai T, Iida K, Taguchi K, Naiki T, Hamamoto S, Okada A, Kawai N, Yasui T. Usefulness of stone culture in endoscopic combined intra-renal surgery. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00781-9] [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: 02/12/2023]
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6
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Morikawa T, Shibahara T, Takano M. Combination of fluorescence visualization and iodine solution-guided surgery for local control of early tongue cancer. Int J Oral Maxillofac Surg 2023; 52:161-167. [PMID: 35729035 DOI: 10.1016/j.ijom.2022.06.001] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 04/21/2022] [Accepted: 06/06/2022] [Indexed: 01/11/2023]
Abstract
The control of enclosed oral epithelial dysplasia is important for the control of oral cancer. Fluorescence visualization and iodine solution are able to detect oral epithelial dysplasia and surrounding oral cancer. The purpose of this study was to clarify the effectiveness of combining fluorescence visualization and iodine solution-guided surgery for early tongue cancer. Participants comprised 264 patients with primary early tongue cancer who underwent surgery. The surgical margin was set at 10 mm outside the clinical tumour, and 5 mm outside the area of fluorescence visualization loss, and 5mm outside the iodine unstained area. The 5-year disease-free survival rate was 87.1% vs 76.1% (P = 0.016) and the 5-year local control rate was 98.6% vs 93.0% (P = 0.008) for combination-guided surgery when compared to conventional surgery. Positive margin rates were 0% for cancer, and 6.5% and 0% for low- and high-grade dysplasia, respectively, with combination-guided surgery (P = 0.257). Multivariate analysis revealed that combination-guided surgery (odds ratio 0.140, 95% confidence interval 0.045-0.437; P < 0.001) and intraoperative frozen section examination (odds ratio 0.302; 95% confidence interval 0.115-0.791; P = 0.015) were significantly associated with local control. The combination of fluorescence visualization and iodine solution are effective in selecting surgical margins for early tongue cancer.
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Affiliation(s)
- T Morikawa
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan.
| | - T Shibahara
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan
| | - M Takano
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan
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7
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Morikawa T. Reply to the Letter concerning "Combination of fluorescence visualization and iodine solution-guided surgery for local control of early tongue cancer". Int J Oral Maxillofac Surg 2022; 52:723. [PMID: 36117008 DOI: 10.1016/j.ijom.2022.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/17/2022] [Indexed: 10/14/2022]
Affiliation(s)
- T Morikawa
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan.
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8
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Miura S, Shimojo T, Morikawa T, Kamada T, Uchiyama Y, Kurata S, Fujioka R, Shibata H. Familial paroxysmal kinesigenic dyskinesia with a novel missense variant (Arg2866Trp) in NBEA. J Hum Genet 2021; 66:805-811. [PMID: 33692494 DOI: 10.1038/s10038-021-00914-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 11/10/2022]
Abstract
Paroxysmal kinesigenic dyskinesia (PKD) is a movement disorder characterized by episodic involuntary movement attacks triggered by sudden movements, acceleration, or intention to move. We ascertained two Japanese familial cases with PKD. The proband is a 22-year-old woman who had noted sudden brief (<30 s) of involuntary movements provoked by kinesigenic trigger such as starting to run, getting on a train, picking up a telephone receiver and so on at the age of 14. Interictal brain single photon emission computed tomography (SPECT) showed hyperperfusion in the left thalamus. A 46-year-old woman, the mother of the proband was also suffering from brief attacks triggered by starting to run in her high school days. On neurological examination, both showed no abnormality. Whole exome sequencing combined with rigorous filtering revealed two heterozygous nonsynonymous variants (NM_001447: c.8976G > C [p.Gln2992His] in FAT2 and NM_015678: c.8596C > T [p.Arg2866Trp] in NBEA). Real time quantitative PCR analysis of Nbea mRNA levels in the developing rat brain revealed peak at postnatal day 28 and decline at postnatal day 56. This result might match the most common clinical course of PKD from the point of view of the most common age at remission. NBEA has been reported to be responsible for neurodevelopmental disease accompanied by epilepsy. We concluded the variant in NBEA most likely to be responsible for our familial cases of PKD.
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Affiliation(s)
- Shiroh Miura
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Toon, 791-0295, Japan.,Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Tomofumi Shimojo
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Takuya Morikawa
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Takashi Kamada
- Department of Neurology, Fukuoka Sanno Hospital, Fukuoka, 814-0001, Japan
| | - Yusuke Uchiyama
- Department of Radiology, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Seiji Kurata
- Department of Radiology, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Ryuta Fujioka
- Department of Food and Nutrition, Beppu University Junior College, Beppu, 874-8501, Japan
| | - Hiroki Shibata
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.
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Suzuki M, Tachibana Y, Takizawa R, Morikawa T, Takeno H, Kasuya KI. A novel poly(3-hydroxybutyrate)-degrading actinobacterium that was isolated from plastisphere formed on marine plastic debris. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2020.109461] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Morikawa T, Kozakai A, Kosugi A, Bessho H, Shibahara T. Image processing analysis of oral cancer, oral potentially malignant disorders, and other oral diseases using optical instruments. Int J Oral Maxillofac Surg 2020; 49:515-521. [DOI: 10.1016/j.ijom.2019.08.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 06/14/2019] [Accepted: 08/20/2019] [Indexed: 11/29/2022]
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11
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Miura S, Kosaka K, Nomura T, Nagata S, Shimojo T, Morikawa T, Fujioka R, Harada M, Taniwaki T, Shibata H. TDRKH is a candidate gene for an autosomal dominant distal hereditary motor neuropathy. Eur J Med Genet 2019; 62:103594. [DOI: 10.1016/j.ejmg.2018.11.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/27/2018] [Accepted: 11/28/2018] [Indexed: 01/06/2023]
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12
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Miura T, Aoki T, Ohtsuka H, Aoki S, Hata T, Iseki M, Takadate T, Ariake K, Kawaguchi K, Masuda K, Ishida M, Mizuma M, Hayashi H, Nakagawa K, Morikawa T, Motoi F, Sasano H, Naitoh T, Kamei T, Unno M. Preoperative neutrophil‐to‐lymphocyte ratio (NLR) predicts recurrence after surgery in patient with pancreatic neuroendocrine neoplasm (PanNEN). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz422.049] [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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13
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Kojima K, Ebuchi Y, Migita S, Morikawa T, Mineki T, Tamaki T, Akutsu N, Murata N, Kitano D, Sudo M, Fukamachi D, Takayama T, Hiro T, Hirayama A, Okumura Y. P1828Aortic calcification detected by computed tomography and aortic vulnerable plaques: aortic angioscopy study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Aortic calcification is associated with atherosclerotic risk factors and an increased risk of death and cardiovascular disease. However, the relationships aortic calcification and aortic plaque instability are not yet elucidated. Recently, some reports showed non-obstructive aortic angioscopy seemed to visualize atherosclerotic changes of aortic wall more clearly compared with computed tomography (CT). The purpose of this study was to evaluate whether aortic calcification is associated with aortic vulnerable plaques in patients with cardiovascular disease.
Methods
We investigated 60 consecutive patients with confirmed or suspected coronary artery disease who underwent both aortic angioscopy and CT. The AC volume (ACV) was measured using the volume-rendering method by extracting the area >130 HU within the whole aorta. ACV index (ACVI) was defined as ACV divided by the body surface area. We evaluated the number of ruptured plaque (RP), ulceration and fissure by aortic angioscopy in the whole aorta. We excluded 4 hemodialysis patients. All patients were divided into the median value of ACVI.
Results
The mean age of patients was 68±10. The median of ACVI was 10.7 ml/m2 [3.9–22.7]. High ACVI patients had significantly greater number of RP, ulceration and atheromatous plaques detected by aortic angioscopy compared with those of low ACVI (2.2±2.7 vs 0.8±1.1, p=0.033, 1.6±1.2 vs 0.9±1.0, p=0.041, 4.0±3.1 vs 1.9±1.8, p=0.009, respectively). Furthermore, the patients without aortic calcification did not have RP at all. In a multivariate model, the number of the atheromatous plaques was independently associated with high ACVI (odds ratio 1.57, 95% confidence interval 1.07–2.69, p=0.018)
Conclusions
Aortic calcification detected by CT was related to aortic vulnerable plaques in patients with cardiovascular disease.
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Affiliation(s)
- K Kojima
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Ebuchi
- Nihon University School of Medicine, Tokyo, Japan
| | - S Migita
- Nihon University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Nihon University School of Medicine, Tokyo, Japan
| | - T Mineki
- Nihon University School of Medicine, Tokyo, Japan
| | - T Tamaki
- Nihon University School of Medicine, Tokyo, Japan
| | - N Akutsu
- Nihon University School of Medicine, Tokyo, Japan
| | - N Murata
- Nihon University School of Medicine, Tokyo, Japan
| | - D Kitano
- Nihon University School of Medicine, Tokyo, Japan
| | - M Sudo
- Nihon University School of Medicine, Tokyo, Japan
| | - D Fukamachi
- Nihon University School of Medicine, Tokyo, Japan
| | - T Takayama
- Nihon University School of Medicine, Tokyo, Japan
| | - T Hiro
- Nihon University School of Medicine, Tokyo, Japan
| | - A Hirayama
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Okumura
- Nihon University School of Medicine, Tokyo, Japan
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Kojima K, Hiro T, Ebuchi Y, Morikawa T, Migita S, Tamaki T, Mineki T, Akutsu N, Murata N, Kitano D, Sudo M, Fukamachi D, Takayama T, Hirayama A, Okumura Y. 6125High wall shear stress predicts plaque rupture of the aortic arch: computational fluid dynamics model and non-obstructive general angioscopy study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Wall shear stress (WSS) has been considered as a major determinant of aortic atherosclerosis. Recently, non-obstructive general angioscopy (NOGA) was developed to be able to visualize a variety of its atherosclerotic pathology, including in vivo ruptured plaque (RP) in the aorta. We, therefore, investigated the relationship between NOGA derived RP in the aortic arch and the stereographic distribution of WSS by using computational fluid dynamics modeling (CFD) on three-dimensional CT angiography (3D-CT).
Methods
We investigated 30 consecutive patients who underwent 3D-CT before and NOGA during coronary angiography. WSS in the aortic arch was measured with an application of CFD based on finite element method by using uniform inlet and outlet flow conditions. Aortic RP was detected by NOGA.
Results
The maximum and mean values of WSS were 67.2±29.2 Pa and 2.4±0.6 Pa. A total of 18 RPs was detected by NOGA. The patients with a distinct RP showed a significantly higher maximum WSS in the whole aortic arch, and the greater and lesser curvature of the aortic arch than those without it (73.3±29.0 Pa vs 50.4±15.2 Pa, p=0.035, 95.0±27.5 Pa vs 42.8±25.2 Pa, p=0.003, 70.8±29.3 Pa vs 46.1±11.9 Pa, p=0.013, respectively), whereas there was no significant difference in the mean WSS between those with and without it. In a multivariate analysis, the maximum value of WSS was an independent predictor of RP in the aortic arch (odds ratio 1.05, 95% confidence interval 1.01–1.13, p=0.019).
Representative picture of WSS and NOGA
Conclusions
Aortic RP detected by NOGA was strongly associated with the higher maximum WSS in the aortic arch derived by CFD using 3D-CT. Maximum WSS may explain the underlying mechanism of not only aortic atherosclerosis, but also aortic RP.
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Affiliation(s)
- K Kojima
- Nihon University School of Medicine, Tokyo, Japan
| | - T Hiro
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Ebuchi
- Nihon University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Nihon University School of Medicine, Tokyo, Japan
| | - S Migita
- Nihon University School of Medicine, Tokyo, Japan
| | - T Tamaki
- Nihon University School of Medicine, Tokyo, Japan
| | - T Mineki
- Nihon University School of Medicine, Tokyo, Japan
| | - N Akutsu
- Nihon University School of Medicine, Tokyo, Japan
| | - N Murata
- Nihon University School of Medicine, Tokyo, Japan
| | - D Kitano
- Nihon University School of Medicine, Tokyo, Japan
| | - M Sudo
- Nihon University School of Medicine, Tokyo, Japan
| | - D Fukamachi
- Nihon University School of Medicine, Tokyo, Japan
| | - T Takayama
- Nihon University School of Medicine, Tokyo, Japan
| | - A Hirayama
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Okumura
- Nihon University School of Medicine, Tokyo, Japan
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Nozawa H, Morikawa T, Kawai K, Hata K, Tanaka T, Nishikawa T, Sasaki K, Shuno Y, Kaneko M, Hiyoshi M, Emoto S, Murono K, Sonoda H, Fukayama M, Ishihara S. Obstruction is associated with perineural invasion in T3/T4 colon cancer. Colorectal Dis 2019; 21:917-924. [PMID: 31017742 DOI: 10.1111/codi.14655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/05/2019] [Indexed: 12/23/2022]
Abstract
AIM Perineural invasion (PNI) is a risk factor for recurrence and metastasis and consequently leads to decreased survival in patients with various malignancies. Recent studies showed that stent placement in obstructive colon cancer increases the frequency of PNI. We hypothesized that mechanical stress including obstruction itself may be associated with PNI. METHOD We retrospectively reviewed 496 patients with pathological T3 or T4 colon cancer who did not receive preoperative treatment. Data were collected from medical charts and pathological findings. The relationships between PNI and other clinicopathological factors were analysed using univariate and multivariate analyses. RESULTS PNI was observed in 239 (48%) patients. Obstruction was markedly more frequent in PNI-positive cancer (39%) than in PNI-negative cancer (24%, P = 0.0003). Multivariate analyses identified obstruction as one of the significant factors associated with PNI (OR 1.68, P = 0.028). Moreover, in 414 patients without distant metastasis who underwent complete resection, PNI was an independent factor associated with poor recurrence-free survival (hazard ratio 2.35, P = 0.003). The coexistence of PNI and obstruction resulted in greater decreases in recurrence-free survival than PNI-negative and/or non-obstructive cases. CONCLUSION Our results suggest that obstruction is associated with PNI and consequently contributes to an increased postoperative recurrence in colon cancer.
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Affiliation(s)
- H Nozawa
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Morikawa
- Department of Pathology, University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Sasaki
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - Y Shuno
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Kaneko
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Hiyoshi
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - S Emoto
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Murono
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - H Sonoda
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Fukayama
- Department of Pathology, University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
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Sakaguchi Y, Takahashi R, Kasai S, Ohuchi K, Morikawa T. Sample environment equipment for light irradiation experiments at J-PARC. JNR 2019. [DOI: 10.3233/jnr-190104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Y. Sakaguchi
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, Japan. E-mail:
| | - R. Takahashi
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
| | - S. Kasai
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
| | - K. Ohuchi
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
| | - T. Morikawa
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
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Miura S, Kosaka K, Fujioka R, Uchiyama Y, Shimojo T, Morikawa T, Irie A, Taniwaki T, Shibata H. Spinocerebellar ataxia 27 with a novel nonsense variant (Lys177X) in FGF14. Eur J Med Genet 2019; 62:172-176. [DOI: 10.1016/j.ejmg.2018.07.005] [Citation(s) in RCA: 10] [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] [Received: 02/23/2018] [Accepted: 07/09/2018] [Indexed: 12/22/2022]
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18
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Kitano D, Takayama T, Fukamachi D, Migita S, Morikawa T, Kogo T, Kojima K, Mineki T, Murata N, Akutsu N, Oshima T, Sudo M, Haruta H, Hiro T, Hirayama A. P2638Comparison of in-stent responses in 8 month between durable polymer and bioabsorbable polymer everolimus-eluting stent: serial observation with angioscopy and optical coherence tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/14/2022] Open
Affiliation(s)
- D Kitano
- Nihon University School of Medicine, Tokyo, Japan
| | - T Takayama
- Nihon University School of Medicine, Tokyo, Japan
| | - D Fukamachi
- Nihon University School of Medicine, Tokyo, Japan
| | - S Migita
- Nihon University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Nihon University School of Medicine, Tokyo, Japan
| | - T Kogo
- Nihon University School of Medicine, Tokyo, Japan
| | - K Kojima
- Nihon University School of Medicine, Tokyo, Japan
| | - T Mineki
- Nihon University School of Medicine, Tokyo, Japan
| | - N Murata
- Nihon University School of Medicine, Tokyo, Japan
| | - N Akutsu
- Nihon University School of Medicine, Tokyo, Japan
| | - T Oshima
- Nihon University School of Medicine, Tokyo, Japan
| | - M Sudo
- Nihon University School of Medicine, Tokyo, Japan
| | - H Haruta
- Nihon University School of Medicine, Tokyo, Japan
| | - T Hiro
- Nihon University School of Medicine, Tokyo, Japan
| | - A Hirayama
- Nihon University School of Medicine, Tokyo, Japan
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Yoshida H, Nagaoka A, Komiya A, Aoki M, Nakamura S, Morikawa T, Ohtsuki R, Sayo T, Okada Y, Takahashi Y. Reduction of hyaluronan and increased expression of HYBID (alias CEMIP and KIAA1199) correlate with clinical symptoms in photoaged skin. Br J Dermatol 2018; 179:136-144. [PMID: 29330857 DOI: 10.1111/bjd.16335] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2017] [Indexed: 01/16/2023]
Abstract
BACKGROUND Hyaluronan (HA) metabolism in skin fibroblasts is mediated by HYBID (hyaluronan binding protein involved in hyaluronan depolymerization, alias CEMIP and KIAA1199) and the HA synthases HAS1 and HAS2. However, photoageing-dependent changes in HA and their molecular mechanisms, and the relationship between HA metabolism and clinical symptoms in photoaged skin remain elusive. OBJECTIVES We examined the amount, size and tissue distribution of HA and expression levels of HYBID, HAS1 and HAS2 in photoaged skin, and analysed their relationship with the degree of photoageing. METHODS Photoageing-dependent changes of HA were investigated by studying skin biopsies isolated from photoprotected and photoexposed areas of the same donors, and the relationships between HA and photoageing symptoms such as skin wrinkling and sagging were examined. RESULTS Skin biopsy specimens showed that the amount and size of HA are decreased in photoexposed skin compared with photoprotected skin, and this was accompanied by increased expression of HYBID and decreased expression of HAS1 and HAS2. Histologically, HA staining in the papillary dermis was decreased in photoexposed skin, showing reverse correlation with HYBID expression. HYBID expression in the photoexposed skin directly correlated with skin roughness and sagging parameters, and the reduced HA staining in the papillary dermis in the photoexposed skin positively correlated with these symptoms. CONCLUSIONS These data demonstrate that imbalance between HYBID-mediated HA degradation and HAS-mediated HA synthesis may contribute to enhanced HA catabolism in photoaged skin, and suggest that HYBID-mediated HA reduction in the papillary dermis is related to skin wrinkling and sagging of photoaged skin.
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Affiliation(s)
- H Yoshida
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - A Nagaoka
- Safety Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - A Komiya
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - M Aoki
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - S Nakamura
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - T Morikawa
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - R Ohtsuki
- Makeup Products Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - T Sayo
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - Y Okada
- Department of Pathophysiology for Locomotive and Neoplastic Diseases, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Y Takahashi
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
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Ishihara S, Kawai K, Tanaka T, Kiyomatsu T, Hata K, Nozawa H, Morikawa T, Watanabe T. Diagnostic value of FDG-PET/CT for lateral pelvic lymph node metastasis in rectal cancer treated with preoperative chemoradiotherapy. Tech Coloproctol 2018; 22:347-354. [DOI: 10.1007/s10151-018-1779-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 01/19/2018] [Indexed: 02/06/2023]
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21
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Yamaji F, Soeda A, Shibata H, Morikawa T, Suzuki K, Yoshida S, Ogura S. A new mutation of congenital methemoglobinemia exacerbated after methylene blue treatment. Acute Med Surg 2018; 5:199-201. [PMID: 29657736 PMCID: PMC5891116 DOI: 10.1002/ams2.335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 01/12/2018] [Indexed: 11/07/2022] Open
Abstract
Case Methylene blue is useful for the treatment of methemoglobinemia. However, even after the patient's methemoglobin (metHb) rate has improved, careful observation is important because they could have undiagnosed congenital methemoglobinemia. In this case, a 67-year-old man underwent gastrointestinal endoscopy with the use of lidocaine for local anesthesia. During the examination, he complained of dyspnea and had low SpO2 despite normal PaO2 and SaO2. He was transferred to our department as a suspected case of acquired methemoglobinemia. Outcome The patient's metHb level was 26.2%. We administered methylene blue i.v. and his metHb level subsequently decreased to 1.6%. However, his metHb level gradually increased to 18.2%, and we suspected that he had congenital methemoglobinemia. We administered riboflavin and ascorbic acid orally, and his metHb level decreased to 6.4%. We also obtained genomic DNA from the patient and identified a novel variant of CYB5R3. Conclusion We report a novel variant of congenital methemoglobinemia that deteriorated after methylene blue treatment.
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Affiliation(s)
- Fuminori Yamaji
- Department of Emergency and Disaster MedicineGifu University Graduate School of MedicineGifuJapan
| | - Akio Soeda
- Department of Emergency and Disaster MedicineGifu University Graduate School of MedicineGifuJapan
| | - Hiroki Shibata
- Medical Institute of BioregulationDivision of GenomicsKyushu UniversityFukuokaJapan
| | - Takuya Morikawa
- Medical Institute of BioregulationDivision of GenomicsKyushu UniversityFukuokaJapan
| | - Kodai Suzuki
- Department of Emergency and Disaster MedicineGifu University Graduate School of MedicineGifuJapan
| | - Shozo Yoshida
- Department of Emergency and Disaster MedicineGifu University Graduate School of MedicineGifuJapan
| | - Shinji Ogura
- Department of Emergency and Disaster MedicineGifu University Graduate School of MedicineGifuJapan
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22
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Iseri K, Iyoda M, Shikida Y, Inokuchi T, Morikawa T, Hara N, Hirano T, Shibata T. Rituximab for the treatment of type B insulin resistance syndrome: a case report and review of the literature. Diabet Med 2017; 34:1788-1791. [PMID: 29044634 DOI: 10.1111/dme.13524] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/12/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Type B insulin resistance syndrome is a rare disease characterized by refractory transient hyperglycaemia and severe insulin resistance associated with circulating anti-insulin receptor antibodies. A standardized treatment regimen for type B insulin resistance syndrome has yet to be established. CASE REPORT We report the case of a 64-year-old man undergoing haemodialysis for antineutrophil cytoplasmic antibody-associated vasculitis and diabetic nephropathy, who developed rapid onset of hyperglycaemia (glycated albumin 52.1%). Type B insulin resistance syndrome was diagnosed, on the basis of positivity for anti-insulin receptor antibodies and the man's autoimmune history of antineutrophil cytoplasmic antibody-associated vasculitis and idiopathic thrombocytopenic purpura. Although severe hyperglycaemia persisted in spite of corticosteroids and high-dose insulin therapy, rituximab treatment resulted in remarkable improvement of the man's severe insulin resistance and disappearance of anti-insulin receptor antibodies without any adverse effects. CONCLUSIONS According to a literature review of 11 cases in addition to the present case, rituximab appears to be a safe and effective strategy for the treatment of corticosteroid-resistant type B insulin resistance syndrome.
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Affiliation(s)
- K Iseri
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - M Iyoda
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Y Shikida
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Inokuchi
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - N Hara
- Division of Diabetes, Metabolism and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Hirano
- Division of Diabetes, Metabolism and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Shibata
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
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Toyoda T, Totsuka Y, Matsushita K, Morikawa T, Miyoshi N, Wakabayashi K, Ogawa K. γ-H2AX formation in the urinary bladder of rats treated with two norharman derivatives obtained from o
-toluidine and aniline. J Appl Toxicol 2017; 38:537-543. [DOI: 10.1002/jat.3560] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/20/2017] [Accepted: 10/04/2017] [Indexed: 11/07/2022]
Affiliation(s)
- T. Toyoda
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
| | - Y. Totsuka
- Division of Carcinogenesis and Cancer Prevention; National Cancer Center Research Institute; 5-1-1 Tsukiji Chuo-ku Tokyo 104-0045 Japan
| | - K. Matsushita
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
| | - T. Morikawa
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
| | - N. Miyoshi
- Laboratory of Biochemistry, Graduate Program of Food Nutritional Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - K. Wakabayashi
- Graduate Division of Nutritional and Environmental Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - K. Ogawa
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
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Ishida M, Sakata N, Ise I, Ono T, Shimura M, Ishii K, Murakami M, Takadate T, Aoki T, Kudo K, Ohnuma S, Fukase K, Ohtsuka H, Mizuma M, Hayashi H, Nakagawa K, Morikawa T, Motoi F, Naitoh T, Unno M. The comparative anatomy of the folds, fossae, and adhesions around the duodenojejunal flexure in mammals. Folia Morphol (Warsz) 2017; 77:286-292. [PMID: 29064554 DOI: 10.5603/fm.a2017.0089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 08/29/2017] [Accepted: 09/20/2017] [Indexed: 11/25/2022]
Abstract
BACKGROUND Anatomical knowledge of the duodenojejunal flexure is necessary for abdominal surgeries, and also important for physiologic studies about the duodenum. But little is known about the anatomy of this region in mammals. Here, we examined comparative anatomy to understand the anatomical formation of the duodenojejunal flexure in mammals. MATERIALS AND METHODS The areas around the duonenojejunal flexure were ob-served in mouse, rat, dog, pig, and human, and the anatomical structures around the duodenojejunal junction in the animals were compared with those in human. RESULTS The superior and inferior duodenal folds, and the superior and inferior duodenal fossae were identified in all examined humans. In pig, the structures were not clearly identified because the duodenum strongly adhered to the retroperitoneum and to the mesocolon. In mouse, rat, and dog, only the plica duodenocolica, which is regarded as the animal counterpart of the superior duo-denal fold in human, was identified, and other folds or fossae were not observed, probably because the duodenum was not fixed to the parietal peritoneum in those animals. Transection of the plica duodenocolica could return the normally rotated intestine back to the state of non-rotation in rat. CONCLUSIONS This study showed the anatomical similarities and dissimilarities of the duodenojejunal flexure among the mammals. Anatomical knowledge of the area is useful for duodenal and pancreatic surgeries, and for animal studies about the duodenum. (Folia Morphol 2018; 77, 2: 286-292).
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Iwamoto T, Morikawa T, Hioki M, Sudo H, Paolucci D, Okuda M. Performance evaluation of the compounding robot, APOTECAchemo, for injectable anticancer drugs in a Japanese hospital. J Pharm Health Care Sci 2017; 3:12. [PMID: 28451441 PMCID: PMC5402647 DOI: 10.1186/s40780-017-0081-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 12/17/2016] [Accepted: 04/11/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The accuracy, safety and feasibility of, the compounding robot APOTECAchemo were evaluated in the clinical practice of Japan. METHODS Accuracy and precision of robotic preparations by APOTECAchemo was evaluated in 20 preparations of fluorouracil (FU) and cyclophosphamide (CPA) infusions by four pharmacists. Environmental and product contaminations with FU and CPA were evaluated by wipe testing. Robotic performance was compared with manual preparation in a biological safety cabinet. The number of robotic products, total compounding time and total pre-reconstitution time of lyophilized drugs between January 1, 2014 to December 31, 2015 were investigated. RESULTS Robotic preparation resulted more accurate and precise (mean absolute dose error and coefficient of variation were 0.83 and 1.04% for FU and 0.52 and 0.59% for CPA) than those of manual preparation (respective values were 1.20 and 1.46% for FU and 1.70 and 2.20% for CPA). Drug residue was not detected from any of the prepared infusion bags with the robotic preparation, whereas FU was detected in two of four analyzed infusion bags with manual preparation. Average total time to make single anticancer drug preparation (compounding plus reconstitution of lyophilized drugs) was 6.11 min in the second half of 2015. During the study period, the highest percentage of production covered by APOTECAchemo was 70.4% of the total inpatient pharmacy activity. CONCLUSION Robotic preparation using APOTECAchemo should give substantial advantages in drug compounding for accuracy and safety and was able to be successfully worked in Mie university hospital.
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Affiliation(s)
- Takuya Iwamoto
- Department of Pharmacy, Mie University Hospital, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Takuya Morikawa
- Department of Pharmacy, Mie University Hospital, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Miki Hioki
- Department of Pharmacy, Mie University Hospital, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Hirofumi Sudo
- Department of Pharmacy, Mie University Hospital, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | | | - Masahiro Okuda
- Department of Pharmacy, Mie University Hospital, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
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Noda Y, Matsudaira H, Arakawa S, Yoshida K, Morikawa T. Evaluation of neoplasms incidentally detected by preoperative FDG-PET/CT for primary lung cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx086.005] [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: 11/12/2022] Open
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Abstract
This study used a decompression drying instrument to investigate the effects of a drying treatment on the physical properties of solid foods. Commercial tofu was used as a model food and was treated at different temperature and pressure conditions in a drying chamber. Overall, high temperatures resulted in better drying. Additionally, pressure in the chamber influenced the drying conditions of samples. Differences in physical properties, such as food texture, shrinkage, and color were observed among some samples, even with similar moisture content. This was caused by differences in moisture distribution in the food, which seems to have manifested as a thin, dried film on the surfaces of samples. It caused inefficient drying and changes in physical properties. Control of the drying conditions (i.e. pressure and heat supply) has relations with not only physical properties, but also the drying efficiency of solid foods.
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Affiliation(s)
- Takuya Morikawa
- a Sanriku Fisheries Research Center, United Graduate School, Iwate University , Kamaishi , Japan
| | - Norihisa Takada
- b Yukiguni Aguri Co., Ltd. , Numata , Japan.,c Faculty of Agriculture , Iwate University , Morioka , Japan
| | - Makoto Miura
- c Faculty of Agriculture , Iwate University , Morioka , Japan
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Takenami T, Maeda S, Karasawa H, Mochizuki Y, Aizawa T, Jun S, Musha H, Morikawa T, Nakagawa K, Hayashi H, Motoi F, Naitoh T, Unno M. 46P Identification of novel biomarkers distinguishing pancreatic head cancer from distal cholangiocarcinoma discovered by proteomics analysis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.019] [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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Miura S, Morikawa T, Fujioka R, Kosaka K, Yamada K, Hattori G, Motomura M, Taniwaki T, Shibata H. A novel frameshift mutation of DDHD1 in a Japanese patient with autosomal recessive spastic paraplegia. Eur J Med Genet 2016; 59:413-6. [PMID: 27216551 DOI: 10.1016/j.ejmg.2016.05.010] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/10/2016] [Accepted: 05/18/2016] [Indexed: 11/15/2022]
Abstract
Spastic paraplegia (SPG) type 28 is an autosomal recessive SPG caused by mutations in the DDHD1 gene. We examined a Japanese 54-years-old male patient with autosomal recessive SPG. His parents were consanguineous. He needed a wheelchair for transfer due to spastic paraplegia. There was a history of operations for bilateral hallux valgus, thoracic ossification of the yellow ligament, bilateral carpal tunnel syndrome, bilateral ankle contracture, and lumbar spinal canal stenosis. He noticed gait disturbance at age 14. He used a cane for walking in his 40s. On neurological examination, he showed hyperreflexia, spasticity, and weakness in the lower extremities and bilateral Babinski reflexes. Urinary dysfunctions and impaired vibration sense in the lower limbs were observed. By exome sequencing analysis using Agilent SureSelect and Illumina MiSeq, we identified 17,248 homozygous nucleotide variants in the patient. Through the examination of 48 candidate genes known to be responsible for autosomal recessive SPG, we identified a novel homozygous 4-bp deletion, c.914_917delGTAA, p.Ser305Ilefs*2 in exon2 of the DDHD1 gene encoding phosphatidic acid-preferring phospholipase A1 (PA-PLA1). The mutation is expected to cause a frameshift generating a premature stop codon 3-bp downstream from the deletion. In consequence, the DDHD domain that is known to be critical for PLA1 activity is completely depleted in the mutated DDHD1 protein, predicted to be a functionally null mutation of the DDHD1 gene. By Sanger sequencing, we confirmed that both parents are heterozygous for the mutation. This variation was not detected in 474 Japanese control subjects as well as the data of the 1,000G Project. We conclude that the novel mutation in DDHD1 is the causative variant for the SPG28 patient that is the first record of the disease in Japanese population.
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Affiliation(s)
- Shiroh Miura
- Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka 830-0011, Japan.
| | - Takuya Morikawa
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Ryuta Fujioka
- Department of Food and Nutrition, Beppu University Junior College, 82 Kitaishigaki, Beppu, Oita 874-8501, Japan
| | - Kengo Kosaka
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kohei Yamada
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Gohsuke Hattori
- Department of Neurosurgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka 830-0011, Japan
| | - Manabu Motomura
- Department of Internal Medicine, Nagasaki Yurino Hospital, 1155-2 Motomuragou, Togitsu, Nagasaki 851-2103, Japan
| | - Takayuki Taniwaki
- Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka 830-0011, Japan
| | - Hiroki Shibata
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Fukui S, Morikawa T, Hirahara M, Terada Y, Shimizu M, Takeuchi K, Takagi Y. A mild hand cleanser, alkyl ether sulphate supplemented with alkyl ether carboxylic acid and alkyl glucoside, improves eczema on the hand and prevents the growth ofStaphylococcus aureuson the skin surface. Int J Cosmet Sci 2016; 38:599-606. [DOI: 10.1111/ics.12325] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 03/23/2016] [Indexed: 11/30/2022]
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Fukuoka A, Matsushita K, Morikawa T, Takano H, Yoshimoto T. Diesel exhaust particles exacerbate allergic rhinitis in mice by disrupting the nasal epithelial barrier. Clin Exp Allergy 2015. [DOI: 10.1111/cea.12597] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- A. Fukuoka
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
| | - K. Matsushita
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
| | - T. Morikawa
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
- Department of Otorhinolaryngology-Head and Neck Surgery; Faculty of Medical Science; University of Fukui; Fukui Japan
| | - H. Takano
- Environmental Health Division; Department of Environmental Engineering; Graduate School of Engineering; Kyoto University; Kyoto Japan
| | - T. Yoshimoto
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
- Department of Immunology; Hyogo College of Medicine; Nishinomiya Hyogo Japan
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Ohta R, Onda T, Morikawa T, Ogane S, Nomura T, Takano N, Shibahara T. Clinical review of medication-related osteonecrosis of the jaw regarding risk factors for tooth extraction. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.265] [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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Tokunaga T, Sakashita M, Haruna T, Asaka D, Takeno S, Ikeda H, Nakayama T, Seki N, Ito S, Murata J, Sakuma Y, Yoshida N, Terada T, Morikura I, Sakaida H, Kondo K, Teraguchi K, Okano M, Otori N, Yoshikawa M, Hirakawa K, Haruna S, Himi T, Ikeda K, Ishitoya J, Iino Y, Kawata R, Kawauchi H, Kobayashi M, Yamasoba T, Miwa T, Urashima M, Tamari M, Noguchi E, Ninomiya T, Imoto Y, Morikawa T, Tomita K, Takabayashi T, Fujieda S. Novel scoring system and algorithm for classifying chronic rhinosinusitis: the JESREC Study. Allergy 2015; 70:995-1003. [PMID: 25945591 PMCID: PMC5032997 DOI: 10.1111/all.12644] [Citation(s) in RCA: 385] [Impact Index Per Article: 42.8] [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] [Accepted: 05/02/2015] [Indexed: 01/22/2023]
Abstract
Background Chronic rhinosinusitis (CRS) can be classified into CRS with nasal polyps (CRSwNP) and CRS without nasal polyps (CRSsNP). CRSwNP displays more intense eosinophilic infiltration and the presence of Th2 cytokines. Mucosal eosinophilia is associated with more severe symptoms and often requires multiple surgeries because of recurrence; however, even in eosinophilic CRS (ECRS), clinical course is variable. In this study, we wanted to set objective clinical criteria for the diagnosis of refractory CRS. Methods This was a retrospective study conducted by 15 institutions participating in the Japanese Epidemiological Survey of Refractory Eosinophilic Chronic Rhinosinusitis (JESREC). We evaluated patients with CRS treated with endoscopic sinus surgery (ESS), and risk of recurrence was estimated using Cox proportional hazard models. Multiple logistic regression models and receiver operating characteristics curves were constructed to create the diagnostic criterion for ECRS. Results We analyzed 1716 patients treated with ESS. To diagnose ECRS, the JESREC scoring system assessed unilateral or bilateral disease, the presence of nasal polyps, blood eosinophilia, and dominant shadow of ethmoid sinuses in computed tomography (CT) scans. The cutoff value of the score was 11 points (sensitivity: 83%, specificity: 66%). Blood eosinophilia (>5%), ethmoid sinus disease detected by CT scan, bronchial asthma, aspirin, and nonsteroidal anti‐inflammatory drugs intolerance were associated significantly with recurrence. Conclusion We subdivided CRSwNP in non‐ECRS, mild, moderate, and severe ECRS according to our algorithm. This classification was significantly correlated with prognosis. It is notable that this algorithm may give useful information to clinicians in the refractoriness of CRS before ESS or biopsy.
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Yamanaka K, Motomura E, Noro Y, Umeda K, Morikawa T, Umeda-Togami K, Omoto Y, Isoda K, Kondo M, Tsuda K, Okuda M, Gabazza EC, Mizutani H. Olopatadine, a non-sedating H1 antihistamine, decreases the nocturnal scratching without affecting sleep quality in atopic dermatitis. Exp Dermatol 2015; 24:227-9. [DOI: 10.1111/exd.12630] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Keiichi Yamanaka
- Department of Dermatology; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Eishi Motomura
- Department of Psychiatry; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Yuichi Noro
- Division and Department of Physics Engineering; Graduate School of Engineering; Mie University; Tsu Mie Japan
| | | | - Takuya Morikawa
- Department of Pharmacy; Mie University Hospital; Tsu Mie Japan
| | | | - Youichi Omoto
- Department of Dermatology; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Kenichi Isoda
- Department of Dermatology; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Makoto Kondo
- Department of Dermatology; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Kenshiro Tsuda
- Department of Dermatology; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Masahiro Okuda
- Department of Pharmacy; Mie University Hospital; Tsu Mie Japan
- Department of Clinical Pharmacy and Biopharmaceutics; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Esteban C. Gabazza
- Department of Immunology; Graduate School of Medicine; Mie University; Tsu Mie Japan
| | - Hitoshi Mizutani
- Department of Dermatology; Graduate School of Medicine; Mie University; Tsu Mie Japan
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Funakoshi A, Morikawa T, Futoo E, Bessho H, Nomura T, Takano N, Shibahara T. Female patients with oral squamous cell carcinoma in Japan. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.283] [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: 10/24/2022]
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Natsume J, Maeda N, Itomi K, Kidokoro H, Ishihara N, Takada H, Okumura A, Kubota T, Miura K, Aso K, Morikawa T, Kato K, Negoro T, Watanabe K. PET in infancy predicts long-term outcome during adolescence in cryptogenic West syndrome. AJNR Am J Neuroradiol 2014; 35:1580-5. [PMID: 24676006 DOI: 10.3174/ajnr.a3899] [Citation(s) in RCA: 6] [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: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Developmental and seizure outcomes in patients with cryptogenic West syndrome are variable. Our aim was to clarify the relationship between FDG-PET findings in infancy and long-term seizure and developmental outcome in cryptogenic West syndrome. MATERIALS AND METHODS From 1991 to 1999, we prospectively performed FDG-PET from the onset of cryptogenic West syndrome in 27 patients. PET was performed at onset and at 10 months of age. In 2012, we evaluated the educational status, psychomotor development, and seizure outcome in 23 of the 27 patients (13-22 years of age). The correlation between PET findings and outcome was evaluated. RESULTS At onset, PET showed hypometabolism in 13 patients (57%). The second PET after the initial treatment revealed cortical hypometabolism in 7 patients (30%). While hypometabolism at onset disappeared on the second PET in 9 patients, it was newly revealed in 3 patients on the second PET. In 2012, seven patients had persistent or recurrent seizures. Eight patients had intellectual impairment. The first PET did not correlate with seizure or developmental outcome. Five of 7 patients (71%) with hypometabolism seen on the second PET had persistent or recurrent seizures, while 14 of 16 (88%) patients with normal findings on the second PET were free of seizures. Five of 7 patients (71%) showing hypometabolism on the second PET had intellectual impairment. Thirteen of 16 (81%) patients with normal findings on the second PET showed normal intelligence. A significant correlation was found between the second PET and long-term seizure (P = .01) or developmental outcome (P = .03). CONCLUSIONS Cortical hypometabolism is not permanent; it changes with clinical symptoms. Hypometabolism after initial treatment predicts long-term seizures and poor developmental outcome.
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Affiliation(s)
- J Natsume
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - N Maeda
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Itomi
- Department of Neurology (K.I.), Aichi Children's Health and Medical Center, Obu, Japan
| | - H Kidokoro
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - N Ishihara
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - H Takada
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - A Okumura
- Department of Pediatrics (A.O.), Juntendo University Faculty of Medicine, Tokyo, Japan
| | - T Kubota
- Department of Pediatrics (T.K.), Anjo Kosei Hospital, Anjo, Japan
| | - K Miura
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Aso
- Department of Pediatrics (K.A.), Aichi Prefecture Medical Welfare Center of Aoitori, Nagoya, Japan
| | | | - K Kato
- Radiological and Medical Laboratory Sciences (K.K.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Negoro
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Watanabe
- Faculty of Health and Medical Sciences (K.W.), Aichi Shukutoku University, Nagakute, Japan
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Nomura T, Ogane S, Yamamoto N, Takano N, Shibahara T, Watabe Y, Morikawa T, Bessho H, Onda T. Diagnosis and treatment of floor of mouth carcinoma in japan. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.360] [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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Fujita K, Harano Y, Morikawa T, Andou J, Myojo S, Yoshida S. Endoscopic treatment of biliary obstruction in a patient with sump syndrome. Endoscopy 2012; 44 Suppl 2 UCTN:E228-9. [PMID: 22622760 DOI: 10.1055/s-0032-1309349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/10/2022]
Affiliation(s)
- K Fujita
- Gastroenterology, Tabata Gastrointestinal Hospital, Akashi, Hyogo, Japan.
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Ishikawa T, Kitayama M, Chono A, Onda K, Okimoto Y, Koshihara S, Nakano Y, Yamochi H, Morikawa T, Shirahata T, Misaki Y. Probing the metal-insulator phase transition in the (DMEDO-EBDT)2PF6 single crystal by optical measurements. J Phys Condens Matter 2012; 24:195501. [PMID: 22498453 DOI: 10.1088/0953-8984/24/19/195501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The temperature and polarization dependence of the optical reflectivity spectra of a quasi-one-dimensional 1/4-filled band system, (DMEDO-EBDT)(2)PF(6), have been investigated. We observed clear anisotropy in the electronic structures corresponding to the anisotropic transport properties. The appearance of a charge gap (E(g) > 0.1 eV) and transfer of the spectral weight accompanied by the metal-insulator phase transition were clearly observed. In addition, a split of the intramolecular vibrational modes was observed, which strongly suggested the existence of charge disproportionation in the low temperature phase. We also observed a photoinduced reflectivity change, which implied the occurrence of a photoinduced phase transition from the low temperature insulating phase to the high temperature metallic phase.
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Affiliation(s)
- T Ishikawa
- Department of Materials Science, Tokyo Institute of Technology, 2-12-1, Oh-okayama, Meguro-ku, Tokyo, Japan.
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Koto M, Hasegawa A, Takagi R, Fujikawa A, Morikawa T, Tsujii H, Kamada T. EP-1051 RISK FACTORS FOR BRAIN INJURY AFTER CARBON ION RADIOTHERAPY FOR SKULL BASE TUMORS. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71384-1] [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: 10/28/2022]
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Nakamura T, Kajimura M, Morikawa T, Hattori K, Ishikawa M, Yukutake Y, Uchiyama SI, Suematsu M. Acute CO2-independent vasodilatation of penetrating and pre-capillary arterioles in mouse cerebral parenchyma upon hypoxia revealed by a thinned-skull window method. Acta Physiol (Oxf) 2011; 203:187-96. [PMID: 21054808 DOI: 10.1111/j.1748-1716.2010.02212.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [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: 11/30/2022]
Abstract
AIM Investigating spatio-temporal relationship between regional metabolic changes and microvascular responses in hypoxic brain is critical for unravelling local O(2) -sensing mechanisms. However, no reliable method to examine the relationship has been available because of inherent disadvantages associated with use of a conventional cranial window preparation. We aimed to devise a method to solve the problem. METHODS Anaesthetized mice were equipped with either a conventional cranial window with craniotomy or a thinned-skull preparation. Mice were mechanically ventilated to avoid hypercapnia and exposed to systemic isobaric hypoxia for 30 min. Using two-photon laser scanning microscopy, nicotinamide adenine dinucleotide, reduced form (NADH) autofluorescence and diameter changes in penetrating and pre-capillary arterioles within the parenchyma were visualized to examine their temporal alterations. RESULTS With the conventional cranial window preparation, marked vertical displacement of the tissue occurred through oedema within 30 s after inducing hypoxia. With a thinned-skull preparation, however, such hypoxia-induced displacement was diminished, enabling us to examine acute spatio-temporal changes in diameters of penetrating and pre-capillary arterioles and NADH autofluorescence. Vasodilatation of these microvessels was evoked within 1 min after hypoxia, and sustained during the entire observation period despite the absence of hypercapnia. This event coincided with parenchymal NADH elevation, but the onset and peak dilatory responses of the penetrating arterioles preceded the local metabolic response of the parenchyma. CONCLUSION Observation of hypoxia-exposed brain by the thinned-skull preparation combined with two-photon intra-vital microscopy revealed rapid vasodilatory responses in penetrating arterioles preceding parenchymal NADH elevation, suggesting the presence of acute hypoxia-sensing mechanisms involving specific segments of cortical arterioles within the neurovascular unit.
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Affiliation(s)
- T Nakamura
- Department of Biochemistry, School of Medicine, Keio University, Tokyo, Japan
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Akiba T, Takeishi M, Kinoshita S, Morikawa T. Vascularized rib support for chest wall reconstruction using Gore-Tex(R) dual mesh after wide sternochondral resection. Interact Cardiovasc Thorac Surg 2011; 13:536-8. [DOI: 10.1510/icvts.2011.275479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Fujisaki Y, Matsuzaki N, Kurotsuchi K, Morikawa T, Kinoshita M, Kitai N, Hanzawa S, Moriya H, Takaura N, Terao M, Matsuoka M, Koga T, Moniwa M. Energy Band States of an Oxygen-doped GeSbTe Phase-change Memory Cell; Mechanism of Low-voltage Operation. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-0997-i11-01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractPhase-change memory is promising because it has a simple structure and has scalability that originates from its unique operating mechanism. However, the programming current should be reduced in accordance with the scaling of cell size [1,2]. We previously reported PCM (Phase Change Memory) cells that operate under 1.5-V/100-μA writing pulses [3, 4]. This PCM had a cell structure composed of 180-nm-W (tungsten) bottom contact to an O-GST (Oxygen-doped GeSbTe) film. Its low-power characteristic is suitable for 0.13-μm generation embedded applications. In the present study, we introduced a new W/O-GST/TaO/W cell structure and found further decrease of programming current the improved stability in the fabrication process. We analyzed the mechanism by which oxygen in GST and the additional TaO layer reduce the power consumption during SET/RESET operations.
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Abstract
BACKGROUND It is difficult to differentiate histologically between benign and malignant follicular-type tumours of the thyroid gland. The present study evaluated whether sentinel lymph node (SLN) biopsy was helpful in obtaining the correct diagnosis of malignant follicular-type tumours, as metastasis to the lymph nodes is sufficient evidence for a diagnosis of cancer. METHODS SLN biopsy was performed for 37 follicular-type tumours suspected to be malignant on the basis of preoperative examinations, but for which the diagnosis had not been confirmed. RESULTS SNs were identified in 32 of 37 procedures. SLN metastases were found in four of 12 patients with a malignant tumour identified by intraoperative frozen-section analysis. There was one false-negative but no false-positive diagnoses. Frozen-section analysis of the tumour itself identified only one follicular cancer. The accuracies of preoperative imaging methods were lower than that of SLN detection. CONCLUSION Detection of SLN metastasis was helpful in diagnosing follicular thyroid cancer and thus enabling one-stage surgery.
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Affiliation(s)
- H Takeyama
- Department of Surgery, Jikei University School of Medicine, 4-11-1 Izumi-Honcho, Komae City, Tokyo 201-8601, Japan.
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Abstract
Eric Clar's ideas concerning "aromatic sextets" are extended to a quantitative format in terms of a polynomial called the "Clar 2-nomial", along with related derivative quantities. The quantification is successfully tested to make correlations with a selection of numerical data, including resonance energies, bond lengths, and NICS ring-aromaticity values.
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Affiliation(s)
- Anirban Misra
- Texas A&M University at Galveston, MARS, 5007 Avenue U, Texas 77551, USA.
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Morikawa T, Nagahiro I, Endo Y, Sato S, Nakashima A, Takatani M, Mitsumori A. [Intralobar sequestration in elderly patient; report of a case]. Kyobu Geka 2008; 61:812-815. [PMID: 18697466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A 71-year-old woman who had been treated as bronchitis was diagnosed as intralobar sequestration by a computed tomography scan. She had 2 episodes of hemosputum in recent 30 years but the amounts were small and they spontaneously stopped in a day. She had an abnormal vessel from thoracic descending aorta of which diameter was 1 cm draining to the basal segment of the left lung. She was operated on a left lower lobectomy with ligation of the vessel via a thoracotomy. Postoperative course was uneventful, and she discharged home on the 9th postoperative day.
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Affiliation(s)
- T Morikawa
- Department of Surgery, Himeji Red Cross Hospital, Himeji, Japan
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Nakamura H, Iwamoto M, Ogata T, Washida K, Sekine K, Takase M, Park BJ, Morikawa T, Miyazaki Y. Effects of Milk Casein-derived Peptides on Absolute Oxyhaemoglobin Concentrations in the Prefrontal Area and on Work Efficiency after Mental Stress Loading in Male Students. J Int Med Res 2008; 36:638-47. [DOI: 10.1177/147323000803600404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study examined the influence of milk casein-derived peptides on cerebral activity after mental stress loading. In a crossover study, 16 male students were given a drink containing peptides (peptide group), or water (control group) before stress loading. The oxyhaemoglobin (HbO2) concentration in the prefrontal area of the brain and work efficiency were measured as indicators of cerebral activity and differences in these parameters were examined according to type A or type B personality. Type A behaviour was defined as: aggression–hostility, hard-driving—time-urgency and speed–power, whereas type B behaviour did not have these characteristics. Peptide intake resulted in a significant increase in both HbO2 concentration and work efficiency, whilst a similar increase was not seen in the control group. When divided into type A or type B personality, the changes in HbO2 concentration for the control group differed significantly in the right prefrontal area. Moreover, in type A subjects the HbO2 concentration in the right prefrontal area following intake was significantly different between the peptide and control groups.
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Affiliation(s)
- H Nakamura
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - M Iwamoto
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - T Ogata
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - K Washida
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - K Sekine
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - M Takase
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - BJ Park
- Centre for Environment, Health and Field Sciences, Chiba University, Kashiwa, Chiba, Japan
| | - T Morikawa
- Forestry and Forest Products Research Institute, Tsukuba, Ibaraki, Japan
| | - Y Miyazaki
- Centre for Environment, Health and Field Sciences, Chiba University, Kashiwa, Chiba, Japan
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Komiyama M, Honnda Y, Matsusaka Y, Morikawa T, Kitano S, Sakamoto H. Cerebral diagnostic and therapeutic angiography for neonatal arteriovenous fistulas. Interv Neuroradiol 2008; 10 Suppl 1:39-42. [PMID: 20587270 DOI: 10.1177/15910199040100s104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2004] [Accepted: 01/20/2004] [Indexed: 11/17/2022] Open
Abstract
SUMMARY Cerebral diagnostic and therapeutic angiography for neonatal arteriovenous fistulas is reported. Three neonatal boys with vein of Galen aneurysmal malformation (1 patient) and dural arteriovenous fistulas (2 patients) presented severe congestive heart failure soon after birth, and were treated by transarterial and/or transvenous embolization using various access routes. In the neonatal period, umbilical approach and direct cervical approach provide unique access routes in addition to the usual transfemoral route. Characteristics of neonatal angiography are discussed.
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Affiliation(s)
- M Komiyama
- Department of Neurosurgery, Osaka City General Hospital; Osaka -
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Abstract
Thymomas are rare mediastinal tumors in pediatrics and cystic thymoma, is characterized by a predominantly cystic formation, is extremely rare. This report describes a 13-year-old girl with cystic thymoma, who was treated by video-assisted thoracoscopic surgery. The microscopic findings were characteristic of cystic thymoma. The literature on cystic thymoma is reviewed here and the clinical characteristics of cystic thymoma are discussed.
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Affiliation(s)
- S Honda
- Department of Pediatric Surgery, Hokkaido University Graduate School of Medicine, Kita-ku, Kita 15, Nishi 7, Sapporo, 060-8638, Japan.
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Hayama S, Morikawa T, Kondoh S, Katoh H. Multiple early bronchioloalveolar carcinomas in both lungs. Interact Cardiovasc Thorac Surg 2007; 2:506-8. [PMID: 17670107 DOI: 10.1016/s1569-9293(03)00120-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We treated a 49-year-old woman with synchronous multiple bronchioloalveolar carcinomas (BAC). Multiple bilateral 'ground-glass' opacities were detected by computed tomography (CT). We performed partial lung resection, and the pathologic diagnosis was atypical adenomatous hyperplasia. Two and one-half years later, a lesion showed enlargement, and was resected along with some others. The histopathologic diagnosis was multiple early BAC. High-resolution CT is likely to detect increasing numbers of similar cases.
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Affiliation(s)
- S Hayama
- Department of Surgical Oncology, Hokkaido University School of Medicine, N-15, W-7, Kita-ku, Sapporo 060-8638, Japan.
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