1
|
S.Omar R, Hashim S, A.Bradley D, A.Karim M, Kobayashi I, A.Kadir A, Hashim A. Al2O3:C and LiF: Mg, Ti characterisations at 100–150 kV energy range for computed tomography dose measurement. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110365] [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: 11/30/2022]
|
2
|
Oshita H, Sawada H, Mitani Y, Tsuboya N, Kabwe JC, Maruyama J, Yusuf A, Ito H, Okamoto R, Otsuki S, Yodoya N, Ohashi H, Oya K, Kobayashi Y, Kobayashi I, Dohi K, Nishimura Y, Saitoh S, Maruyama K, Hirayama M. Perinatal Hypoxia Aggravates Occlusive Pulmonary Vasculopathy In SU5416/Hypoxia-Treated Rats Later In Life. Am J Physiol Lung Cell Mol Physiol 2022; 323:L178-L192. [PMID: 35762603 DOI: 10.1152/ajplung.00422.2021] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a fatal disease, which is characterized by occlusive pulmonary vascular disease (PVD) in small pulmonary arteries. It remains unknown whether perinatal insults aggravate occlusive PVD later in life. We tested the hypothesis that perinatal hypoxia aggravates PVD and survival in rats. PVD was induced in rats with/without perinatal hypoxia (E14 to P3) by injecting SU5416 at 7 weeks of age and subsequent exposure to hypoxia for 3 weeks (SU5416/hypoxia). Hemodynamic and morphological analyses were performed in rats with/without perinatal hypoxia at 7 weeks of age (baseline rats, n=12) and at 15 weeks of age in 4 groups of rats: SU5416/hypoxia or control rats with/without perinatal hypoxia (n=40). Pulmonary artery smooth muscle cells (PASMCs) from the baseline rats with/without perinatal hypoxia were used to assess cell proliferation, inflammation and genomic DNA methylation profile. Although perinatal hypoxia alone did not affect survival, physiological or pathological parameters at baseline or at the end of the experimental period in controls, perinatal hypoxia decreased weight gain and survival rate, and increased right ventricular systolic pressure, right ventricular hypertrophy, and indices of PVD in SU5416/hypoxia rats. Perinatal hypoxia alone accelerated the proliferation and inflammation of cultured PASMCs from baseline rats, which was associated with DNA methylation. In conclusion, we established the first fatal animal model of PAH with worsening hemodynamics and occlusive PVD elicited by perinatal hypoxia, which was associated with hyperproliferative, pro-inflammatory, and epigenetic changes in cultured PASMCs. These findings provide insights into the treatment and prevention of occlusive PVD.
Collapse
Affiliation(s)
- Hironori Oshita
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan.,Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Hirofumi Sawada
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan.,Department of Anesthesiology and Critical Care Medicine, Mie University Graduate School of Medicine, Mie, Japan
| | - Yoshihide Mitani
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Naoki Tsuboya
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Jane Chanda Kabwe
- Department of Anesthesiology and Critical Care Medicine, Mie University Graduate School of Medicine, Mie, Japan
| | - Junko Maruyama
- Department of Clinical Engineering, Suzuka University of Medical Science, Mie, Japan
| | - Ali Yusuf
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Hiromasa Ito
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Ryuji Okamoto
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Shoichiro Otsuki
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Noriko Yodoya
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Hiroyuki Ohashi
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Kazunobu Oya
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Organization for the Promotion of Regional Innovation, Mie University, Mie, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Organization for the Promotion of Regional Innovation, Mie University, Mie, Japan
| | - Kaoru Dohi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Yuhei Nishimura
- Integrative Pharmacology, Mie University Graduate School of Medicine, Mie, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Kazuo Maruyama
- Department of Anesthesiology and Critical Care Medicine, Mie University Graduate School of Medicine, Mie, Japan
| | - Masahiro Hirayama
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| |
Collapse
|
3
|
Osaka M, Nabemoto M, Maeda S, Sakazono S, Masuko-Suzuki H, Ito K, Takada Y, Kobayashi I, Lim YP, Nakazono M, Fujii S, Murase K, Takayama S, Suzuki G, Suwabe K, Watanabe M. Genetic and tissue-specific RNA-sequencing analysis of self-compatible mutant TSC28 in Brassica rapa L. toward identification of a novel self-incompatibility factor. Genes Genet Syst 2019; 94:167-176. [PMID: 31474624 DOI: 10.1266/ggs.19-00010] [Citation(s) in RCA: 5] [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] [Indexed: 11/23/2022] Open
Abstract
Self-incompatibility (SI) is a sophisticated system for pollen selectivity to prevent pollination by genetically identical pollen. In Brassica, it is genetically controlled by a single, highly polymorphic S-locus, and the male and female S-determinant factors have been identified as S-locus protein 11 (SP11)/S-locus cysteine-rich protein (SCR) and S-locus receptor kinase (SRK), respectively. However, the overall molecular system and identity of factors in the downstream cascade of the SI reaction remain unclear. Previously, we identified a self-compatible B. rapa mutant line, TSC28, which has a disruption in an unidentified novel factor of the SI signaling cascade. Here, in a genetic analysis of TSC28, using an F2 population from a cross with the reference B. rapa SI line Chiifu-401, the causal gene was mapped to a genetic region of DNA containing markers BrSA64 and ACMP297 in B. rapa chromosome A1. By fine mapping using an F2 population of 1,034 plants, it was narrowed down to a genetic region between DNA markers ACMP297 and BrgMS4028, with physical length approximately 1.01 Mbp. In this genomic region, 113 genes are known to be located and, among these, we identified 55 genes that were expressed in the papilla cells. These are candidates for the gene responsible for the disruption of SI in TSC28. This list of candidate genes will contribute to the discovery of a novel downstream factor in the SP11-SRK signaling cascade in the Brassica SI system.
Collapse
Affiliation(s)
| | - Moe Nabemoto
- Graduate School of Life Sciences, Tohoku University
| | | | | | | | - Kana Ito
- Graduate School of Life Sciences, Tohoku University
| | | | | | - Yong Pyo Lim
- Department of Horticulture, Chungnam National University
| | - Mikio Nakazono
- Graduate School of Bioagricultural Sciences, Nagoya University
| | - Sota Fujii
- Graduate School of Agriculture and Life Sciences, The University of Tokyo
| | - Kohji Murase
- Graduate School of Agriculture and Life Sciences, The University of Tokyo
| | - Seiji Takayama
- Graduate School of Agriculture and Life Sciences, The University of Tokyo
| | - Go Suzuki
- Division of Natural Science, Osaka Kyoiku University
| | | | | |
Collapse
|
4
|
Suzuki TK, Koshikawa S, Kobayashi I, Uchino K, Sezutsu H. Modular cis-regulatory logic of yellow gene expression in silkmoth larvae. Insect Mol Biol 2019; 28:568-577. [PMID: 30737958 PMCID: PMC6849593 DOI: 10.1111/imb.12574] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Colour patterns in butterflies and moths are crucial traits for adaptation. Previous investigations have highlighted genes responsible for pigmentation (ie yellow and ebony). However, the mechanisms by which these genes are regulated in lepidopteran insects remain poorly understood. To elucidate this, molecular studies involving dipterans have largely analysed the cis-regulatory regions of pigmentation genes and have revealed cis-regulatory modularity. Here, we used well-developed transgenic techniques in Bombyx mori and demonstrated that cis-regulatory modularity controls tissue-specific expression of the yellow gene. We first identified which body parts are regulated by the yellow gene via black pigmentation. We then isolated three discrete regulatory elements driving tissue-specific gene expression in three regions of B. mori larvae. Finally, we found that there is no apparent sequence conservation of cis-regulatory regions between B. mori and Drosophila melanogaster, and no expression driven by the regulatory regions of one species when introduced into the other species. Therefore, the trans-regulatory landscapes of the yellow gene differ significantly between the two taxa. The results of this study confirm that lepidopteran species use cis-regulatory modules to control gene expression related to pigmentation, and represent a powerful cadre of transgenic tools for studying evolutionary developmental mechanisms.
Collapse
Affiliation(s)
- T. K. Suzuki
- Transgenic Silkworm Research Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO)TsukubaIbarakiJapan
| | - S. Koshikawa
- Faculty of Environmental Earth ScienceHokkaido UniversitySapporo060‐0810Japan
| | - I. Kobayashi
- Transgenic Silkworm Research Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO)TsukubaIbarakiJapan
| | - K. Uchino
- Transgenic Silkworm Research Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO)TsukubaIbarakiJapan
| | - H. Sezutsu
- Transgenic Silkworm Research Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO)TsukubaIbarakiJapan
| |
Collapse
|
5
|
Okamura M, Yamanaka Y, Shigemoto M, Kitadani Y, Kobayashi Y, Kambe T, Nagao M, Kobayashi I, Okumura K, Masuda S. Correction: Depletion of mRNA export regulator DBP5/DDX19, GLE1 or IPPK that is a key enzyme for the production of IP6, resulting in differentially altered cytoplasmic mRNA expression and specific cell defect. PLoS One 2019; 14:e0220511. [PMID: 31344122 PMCID: PMC6657908 DOI: 10.1371/journal.pone.0220511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0197165.].
Collapse
|
6
|
Tozaki T, Kikuchi M, Kakoi H, Hirota K, Nagata S, Yamashita D, Ohnuma T, Takasu M, Kobayashi I, Hobo S, Manglai D, Petersen JL. Genetic diversity and relationships among native Japanese horse breeds, the Japanese Thoroughbred and horses outside of Japan using genome-wide SNP data. Anim Genet 2019; 50:449-459. [PMID: 31282588 DOI: 10.1111/age.12819] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2019] [Indexed: 11/29/2022]
Abstract
Eight horse breeds-Hokkaido, Kiso, Misaki, Noma, Taishu, Tokara, Miyako and Yonaguni-are native to Japan. Although Japanese native breeds are believed to have originated from ancient Mongolian horses imported from the Korean Peninsula, the phylogenetic relationships among these breeds are not well elucidated. In the present study, we compared genetic diversity among 32 international horse breeds previously evaluated by the Equine Genetic Diversity Consortium, the eight Japanese native breeds and Japanese Thoroughbreds using genome-wide SNP genotype data. The proportion of polymorphic loci and expected heterozygosity showed that the native Japanese breeds, with the exception of the Hokkaido, have relatively low diversity compared to the other breeds sampled. Phylogenetic and cluster analyses demonstrated relationships among the breeds that largely reflect their geographic distribution in Japan. Based on these data, we suggest that Japanese horses originated from Mongolian horses migrating through the Korean Peninsula. The Japanese Thoroughbreds were distinct from the native breeds, and although they maintain similar overall diversity as Thoroughbreds from outside Japan, they also show evidence of uniqueness relative to the other Thoroughbred samples. This is the first study to place the eight native Japanese breeds and Japanese Thoroughbred in context with an international sample of diverse breeds.
Collapse
Affiliation(s)
- T Tozaki
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan.,Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, 501-1193, Japan.,College of Animal Science, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - M Kikuchi
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - H Kakoi
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - K Hirota
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - S Nagata
- Genetic Analysis Department, Laboratory of Racing Chemistry, Utsunomiya, Tochigi, 320-851, Japan
| | - D Yamashita
- Japan Equine Affairs Association, Chuo-ku, Tokyo, 104-0033, Japan
| | - T Ohnuma
- Japan Equine Affairs Association, Chuo-ku, Tokyo, 104-0033, Japan
| | - M Takasu
- Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, 501-1193, Japan
| | - I Kobayashi
- Sumiyoshi Livestock Science Station, Field Science Center, University of Miyazaki, Miyazaki, 880-0121, Japan
| | - S Hobo
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, 890-0065, Japan
| | - D Manglai
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, 010018, China
| | - J L Petersen
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE, 68583-0908, USA
| |
Collapse
|
7
|
Taniguchi T, Mochihashi D, Nagai T, Uchida S, Inoue N, Kobayashi I, Nakamura T, Hagiwara Y, Iwahashi N, Inamura T. Survey on frontiers of language and robotics. Adv Robot 2019. [DOI: 10.1080/01691864.2019.1632223] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- T. Taniguchi
- Department of Information Science and Engineering, Ritsumeikan University, Kusatsu, Japan
| | - D. Mochihashi
- The Institute of Statistical Mathematics, Tachikawa, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Tokyo, Japan
| | - T. Nagai
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | - S. Uchida
- Faculty of Languages and Cultures, Kyushu University, Fukuoka, Japan
| | - N. Inoue
- Graduate School of Information Sciences, Tohoku University, Sendai, Japan
- RIKEN Center for Advanced Intelligence Project, Chuo-ku, Japan
| | - I. Kobayashi
- Advanced Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo, Japan
| | - T. Nakamura
- Department of Mechanical Engineering and Intelligent Systems, The University of Electro-Communications, Chofu, Japan
| | - Y. Hagiwara
- Department of Information Science and Engineering, Ritsumeikan University, Kusatsu, Japan
| | - N. Iwahashi
- Department of Information and Communication Engineering, Okayama Prefectural University, Okayama, Japan
| | - T. Inamura
- SOKENDAI (The Graduate University for Advanced Studies), Tokyo, Japan
- National Institute of Informatics, Tokyo, Japan
| |
Collapse
|
8
|
Nishioka T, Marian M, Kobayashi I, Kobayashi Y, Yamamoto K, Tamaki H, Suga H, Shimizu M. Microbial basis of Fusarium wilt suppression by Allium cultivation. Sci Rep 2019; 9:1715. [PMID: 30737419 PMCID: PMC6368641 DOI: 10.1038/s41598-018-37559-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/10/2018] [Indexed: 11/22/2022] Open
Abstract
Crop rotation and intercropping with Allium plants suppresses Fusarium wilt in various crops. However, the mechanisms underlying this phenomenon have not been fully elucidated. This study was designed to assess the role of microorganisms inhabiting Allium rhizospheres and antifungal compounds produced by Allium roots in Fusarium wilt suppression by Allium cultivation. Suppression of cucumber Fusarium wilt and the pathogen multiplication by Allium (Welsh onion and/or onion)-cultivated soils were eliminated by heat treatment at 60 °C, whereas those by Welsh onion-root extract were lost at 40 °C. The addition of antibacterial antibiotics eliminated the suppressive effect of Welsh onion-cultivated soil on pathogen multiplication, suggesting the contribution of antagonistic gram-negative bacteria to the soil suppressiveness. The Illumina MiSeq sequencing of 16S rRNA gene amplicons revealed that genus Flavobacterium was the predominant group that preferentially accumulated in Allium rhizospheres. Flavobacterium species recovered from the rhizosphere soils of these Allium plants suppressed Fusarium wilt on cucumber seedlings. Furthermore, confocal laser scanning microscopy revealed that Flavobacterium isolates inhibited the multiplication of the pathogen in soil. Taken together, we infer that the accumulation of antagonistic Flavobacterium species plays a key role in Fusarium wilt suppression by Allium cultivation.
Collapse
Affiliation(s)
- Tomoki Nishioka
- The United Graduate school of Agricultural Science, Gifu University, Gifu, Japan
| | - Malek Marian
- The United Graduate school of Agricultural Science, Gifu University, Gifu, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Kyosuke Yamamoto
- Bioproduction Research Institute, National Institute of Advanced and Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Hideyuki Tamaki
- Bioproduction Research Institute, National Institute of Advanced and Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Haruhisa Suga
- Life Science Research Center, Gifu University, Gifu, Japan
| | - Masafumi Shimizu
- The United Graduate school of Agricultural Science, Gifu University, Gifu, Japan.
| |
Collapse
|
9
|
Nakamura T, Suzuki S, Takei Y, Kobayashi I, Pongnapang N, Kato K. Simultaneous measurement of patient dose and distribution of indoor scattered radiation during digital breast tomosynthesis. Radiography (Lond) 2019; 25:72-76. [PMID: 30599834 DOI: 10.1016/j.radi.2018.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 06/12/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Breast cancer incidence increases from the age of 30 years. As this age range coincides with that in which women usually pursue pregnancy, undergoing medical examinations for conditions such as breast cancer is a concern, especially when pregnancy is uncertain during the first eight weeks. Moreover, in this age range, breast often exhibits a high density, thus compromising diagnosis. For such density, digital breast tomosynthesis (DBT) provides a more accurate diagnosis than 2D mammography given its higher sensitivity and specificity. However, radiation exposure increases during DBT, and it should be determined. METHODS We determined the entrance surface dose, scattered radiation dose, and average glandular dose (AGD), which can be mutually compared following an international protocol. Using our proposed method, the distribution of scattered radiation can be easily and quickly obtained with a minor load to the equipment. Then, we can determine the indoor scattered radiation and surface dose on patients during DBT. RESULTS We obtained a maximum AGD of 2.32 mGy. The scattered radiation was distributed over both sides with maximum of approximately 40 μGy, whereas the maximum dose around the eye was approximately 10 μGy. CONCLUSION By measuring doses using the proposed method, a correct dose information can be provided for patients to mitigate their concerns about radiation exposure. Although the obtained doses were low, their proper management is still required. Overall, the results from this study can help to enhance dose management for patients and safety management regarding indoor radiation.
Collapse
Affiliation(s)
- T Nakamura
- Department of Radiology, Daido Hospital, Japan; Showa University Graduate School of Health Sciences, Japan.
| | - S Suzuki
- Department of Radiology, Daido Hospital, Japan
| | - Y Takei
- Department of Radiological Technology, Kawasaki University of Medical Welfare, Kawasaki, Japan
| | | | - N Pongnapang
- Department of Radiological Technology, Faculty of Medical Technology, Mahidol University, Siriraj Hospital, Thailand
| | - K Kato
- Showa University Graduate School of Health Sciences, Japan
| |
Collapse
|
10
|
Kanao K, Sugie M, Morinaga S, Muramatsu H, Kajikawa K, Kobayashi I, Nishikawa G, Watanabe M, Zennami K, Nakamura K, Sumitomo M. Prognostic impact of pT3a subclassification based on extent of extraprostatic extension after robot-assisted radical prostatectomy. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy434.009] [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
|
11
|
Watanabe M, Kanao K, Sugie M, Morinaga S, Muramatsu H, Kobayashi I, Kajikawa K, Nishikawa G, Zennami K, Nakamura K, Sumitomo M. Prognostic and predictive clinical factors for progression to castration refractory prostate cancer in patients with hormone sensitive prostate cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy434.019] [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
|
12
|
Yamazaki H, Kobayashi I, Shimamoto T. Enhancement of ADP-Induced Platelet Aggregation by Exercise Test in Coronary Patients and Its Prevention by Pyridinolcarbamate. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1654253] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryADP-induced platelet aggregation in citrated platelet rich plasma (CPRP) was examined using a photoelectric system. To exclude a variation in intensities of platelet aggregation in repeated measurements and to compare intensities of different samples, the maximum deflection of the optical density of CPRP induced by adding ADP solution was divided by a deflection of the optical density of the platelet free plasma and its value, shown as a percentage, was defined as an intensity of ADP-induced platelet aggregation. In this method, the linearity was found in the dose response curve of the platelet aggregation induced by 10−6, 3 × 10−6 and 10−5 molar of ADP with statistical significance. These variation coefficients were less than 5% in the responses induced by the higher doses of ADP. Changes in the ADP-induced platelet aggregation after a Master’s two step test were examined in 13 patients with angina pectoris 3 h after oral administration of placebo or 1 g of pyridinolcarbamate. Under placebo pretreatment, an enhancement of platelet aggregation was observed 1 min after the exercise test with statistical significance (P < 0.01 ∼ 0.05). In the cases of the same subjects pretreated with pyridinolcarbamate, such change was not observed at any time. Using a parallel line assay, an inhibitory effect of pyridinolcarbamate against enhancement of ADP-induced platelet aggregation after the exercise was also recognized with statistical significance (P < 0.01). In the 10 healthy volunteers, there was no statistically significant enhancement of ADP-induced platelet aggregation using any concentration of ADP 1 to 10 min after the exercise test.
Collapse
|
13
|
Okamura M, Yamanaka Y, Shigemoto M, Kitadani Y, Kobayashi Y, Kambe T, Nagao M, Kobayashi I, Okumura K, Masuda S. Depletion of mRNA export regulator DBP5/DDX19, GLE1 or IPPK that is a key enzyme for the production of IP6, resulting in differentially altered cytoplasmic mRNA expression and specific cell defect. PLoS One 2018; 13:e0197165. [PMID: 29746542 PMCID: PMC5945018 DOI: 10.1371/journal.pone.0197165] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 04/27/2018] [Indexed: 01/13/2023] Open
Abstract
DBP5, also known as DDX19, GLE1 and inositol hexakisphosphate (IP6) function in messenger RNA (mRNA) export at the cytoplasmic surface of the nuclear pore complex in eukaryotic cells. DBP5 is a DEAD-box RNA helicase, and its activity is stimulated by interactions with GLE1 and IP6. In addition, these three factors also have unique role(s). To investigate how these factors influenced the cytoplasmic mRNA expression and cell phenotype change, we performed RNA microarray analysis to detect the effect and function of DBP5, GLE1 and IP6 on the cytoplasmic mRNA expression. The expression of some cytoplasmic mRNA subsets (e.g. cell cycle, DNA replication) was commonly suppressed by the knock-down of DBP5, GLE1 and IPPK (IP6 synthetic enzyme). The GLE1 knock-down selectively reduced the cytoplasmic mRNA expression required for mitotic progression, results in an abnormal spindle phenotype and caused the delay of mitotic process. Meanwhile, G1/S cell cycle arrest was observed in DBP5 and IPPK knock-down cells. Several factors that function in immune response were also down-regulated in DBP5 or IPPK knock-down cells. Thereby, IFNβ-1 mRNA transcription evoked by poly(I:C) treatment was suppressed. These results imply that DBP5, GLE1 and IP6 have a conserved and individual function in the cytoplasmic mRNA expression. Variations in phenotype are due to the difference in each function of DBP5, GLE1 and IPPK in intracellular mRNA metabolism.
Collapse
Affiliation(s)
- Masumi Okamura
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Yasutaka Yamanaka
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Maki Shigemoto
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Yuya Kitadani
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Taiho Kambe
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Masaya Nagao
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Katsuzumi Okumura
- Department of Life Sciences, Graduate School of Bioresources, Mie University, Tsu, Mie, Japan
| | - Seiji Masuda
- Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
- * E-mail:
| |
Collapse
|
14
|
Muramatsu K, Ujiie H, Kobayashi I, Nishie W, Natsuga K, Iwata H, Shimizu H. 012 Treg dysfunction induces autoantibodies to type XVII collagen and BP230 in mice and humans. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
15
|
Yoodee S, Kobayashi Y, Songnuan W, Boonchird C, Thitamadee S, Kobayashi I, Narangajavana J. Phytohormone priming elevates the accumulation of defense-related gene transcripts and enhances bacterial blight disease resistance in cassava. Plant Physiol Biochem 2018; 122:65-77. [PMID: 29190504 DOI: 10.1016/j.plaphy.2017.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 10/26/2017] [Revised: 11/25/2017] [Accepted: 11/25/2017] [Indexed: 05/26/2023]
Abstract
Cassava bacterial blight (CBB) disease caused by Xanthomonas axonopodis pv. manihotis (Xam) is a severe disease in cassava worldwide. In addition to causing significant cassava yield loss, CBB disease has not been extensively studied, especially in terms of CBB resistance genes. The present research demonstrated the molecular mechanisms underlining the defense response during Xam infection in two cassava cultivars exhibiting different degrees of disease resistance, Huay Bong60 (HB60) and Hanatee (HN). Based on gene expression analysis, ten of twelve putative defense-related genes including, leucine-rich repeat receptor-like kinases (LRR-RLKs), resistance (R), WRKY and pathogenesis-related (PR) genes, were differentially expressed between these two cassava cultivars during Xam infection. The up-regulation of defense-related genes observed in HB60 may be the mechanism required for the reduction of disease severity in the resistant cultivar. Interestingly, priming with salicylic acid (SA) or methyl jasmonate (MeJA) for 24 h before Xam inoculation could enhance the defense response in both cassava cultivars. The disease severity was decreased 10% in the resistant cultivar (HB60) and was remarkably reduced 21% in the susceptible cultivar (HN) by SA/MeJA priming. Priming with Xam inoculation modulated cassava4.1_013417, cassava4.1_030866 and cassava4.1_020555 (highest similarity to MeWRKY59, MePR1 and AtPDF2.2, respectively) expression and led to enhanced resistance of the susceptible cultivar in the second infection. The putative cis-regulatory elements were predicted in an upstream region of these three defense-related genes. The different gene expression levels in these genes between the two cultivars were due to the differences in cis-regulatory elements in their promoter regions. Taken together, our study strongly suggested that the induction of defense-related genes correlated with defense resistance against Xam infection, and exogenous application of SA or MeJA could elevate the defense response in both cultivars of cassava. This finding should pave the way for management to reduce yield loss from disease and genetic improvement in cassava.
Collapse
Affiliation(s)
- Sunisa Yoodee
- Department of Biotechnology, Faculty of Science, Mahidol University, Phayathai, Bangkok, Thailand
| | - Yohko Kobayashi
- Center for Molecular Biology and Genetics, Graduate School of Regional Innovation Studies, Mie University, Japan
| | - Wisuwat Songnuan
- Department of Plant Science, Faculty of Science, Mahidol University, Phayathai, Bangkok, Thailand
| | - Chuenchit Boonchird
- Department of Biotechnology, Faculty of Science, Mahidol University, Phayathai, Bangkok, Thailand
| | - Siripong Thitamadee
- Department of Biotechnology, Faculty of Science, Mahidol University, Phayathai, Bangkok, Thailand
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Graduate School of Regional Innovation Studies, Mie University, Japan
| | - Jarunya Narangajavana
- Department of Biotechnology, Faculty of Science, Mahidol University, Phayathai, Bangkok, Thailand; Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE), Bangkok, Thailand.
| |
Collapse
|
16
|
Wirawan A, Tajima K, Takahashi F, Hidayat M, Kanemaru R, Koinuma Y, Hayakawa D, Tajima M, Matsumoto N, Kanamori K, Takeda I, Kato M, Kobayashi I, Shimada N, Takahashi K. P2.02-012 The Epigenetic Role of LSD1+8a in Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1189] [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]
|
17
|
Nurwidya F, Takahashi F, Hidayat M, Kobayashi I, Wirawan A, Kato M, Tajima K, Shimada N, Takeda I, Tajima M, Matsumoto N, Kanemori K, Koinuma Y, Yunus F, Andarini S, Takahashi K. P1.02-065 Histone Deacetylase Inhibition Alters Stem Cell Phenotype in Gefitinib-Resistant Lung Cancer Cells with EGFR Mutation. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.798] [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]
|
18
|
Mori K, Toiyama Y, Otake K, Ide S, Imaoka H, Okigami M, Okugawa Y, Fujikawa H, Saigusa S, Hiro J, Kobayashi M, Ohi M, Tanaka K, Inoue Y, Kobayashi Y, Mohri Y, Kobayashi I, Goel A, Kusunoki M. Successful identification of a predictive biomarker for lymph node metastasis in colorectal cancer using a proteomic approach. Oncotarget 2017; 8:106935-106947. [PMID: 29291001 PMCID: PMC5739786 DOI: 10.18632/oncotarget.22149] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 02/02/2017] [Accepted: 06/29/2017] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer (CRC)-associated mortality is primarily caused by lymph node (LN) and distant metastasis, highlighting the need for biomarkers that predict LN metastasis and facilitate better therapeutic strategies. We used an Isobaric Tags for Relative and Absolute Quantification (iTRAQ)-based comparative proteomics approach to identify novel biomarkers for predicting LN metastasis in CRC patients. We analyzed five paired samples of CRC with or without LN metastasis, adjacent normal mucosa, and normal colon mucosa, and differentially expressed proteins were identified and subsequently validated at the protein and/or mRNA levels by immunohistochemistry and qRT-PCR, respectively. We identified 55 proteins specifically associated with LN metastasis, from which we selected ezrin for further analysis and functional assessment. Expression of ezrin at both the protein and mRNA levels was significantly higher in CRC tissues than in adjacent normal colonic mucosa. In univariate analysis, high ezrin expression was significantly associated with tumor progression and poor prognosis, which was consistent with our in vitro findings that ezrin promotes the metastatic capacity of CRC cells by enabling cell invasion and migration. In multivariate analysis, high levels of ezrin protein and mRNA in CRC samples were independent predictors of LN metastasis. Our data thus identify ezrin as a novel protein and mRNA biomarker for predicting LN metastasis in CRC patients.
Collapse
Affiliation(s)
- Koichiro Mori
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuji Toiyama
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Kohei Otake
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Shozo Ide
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Hiroki Imaoka
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Masato Okigami
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yoshinaga Okugawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Hiroyuki Fujikawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Susumu Saigusa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Junichiro Hiro
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Minako Kobayashi
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Masaki Ohi
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Koji Tanaka
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yasuhiro Inoue
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Mie, Japan
| | - Yasuhiko Mohri
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Mie, Japan
| | - Ajay Goel
- Center for Gastrointestinal Research & Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Scott & White Research Institute and Charles A Sammons Cancer Center, Baylor University Medical Center, Dallas, TX USA
| | - Masato Kusunoki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| |
Collapse
|
19
|
Kanayama Katsuse A, Takahashi H, Yoshizawa S, Tateda K, Nakanishi Y, Kaneko A, Kobayashi I. Public health and healthcare-associated risk of electric, warm-water bidet toilets. J Hosp Infect 2017; 97:296-300. [PMID: 28756169 DOI: 10.1016/j.jhin.2017.07.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 07/20/2017] [Indexed: 11/18/2022]
Abstract
BACKGROUND In recent years, installation of bidet toilets within hospitals in Japan has raised concerns regarding potential for cross-contamination by antimicrobial-resistant bacteria from patients who are hospitalized over an extended period. AIM To investigate the distribution of antimicrobial-resistant bacteria recovered from bidet toilets at a university-affiliated hospital in Japan. METHODS All 292 electric bidet toilets at a university hospital were sampled for contamination. Swabs for culture were used to sample water-jet nozzles and toilet seats. FINDINGS Of the 292 toilet seats sampled, warm-water nozzles of 254 (86.9%) were found to be contaminated by one or more of the following organisms: Staphylococcus aureus, Streptococcus spp., Enterococcus spp., Enterobacteriaceae and non-Enterobacteriaceae Gram-negative bacteria. S. aureus was recovered from one water-jet nozzle and nine toilet seats; of these, meticillin-resistant S. aureus was recovered from the water-jet nozzle and from one toilet seat. Both the water-jet nozzle and seat of the same toilet were contaminated with a CTX-M-9 group extended-spectrum β-lactamase-producing Escherichia coli. Of the Gram-negative isolates recovered from samples, the organism with the highest frequency of isolation was Stenotrophomonas maltophilia, which was recovered from 39 bidet toilets. CONCLUSION Warm-water nozzles of bidet toilets are contaminated with a wide range of bacteria, making them a potential vehicle for cross-infection. In the hospital setting, shared use of bidet toilets must consider the clinical background of patients. Based on these findings, these devices must be part of the risk management programme, and steps should be included for monitoring and disinfection.
Collapse
Affiliation(s)
- A Kanayama Katsuse
- Department of Infection Control and Prevention, Toho University Faculty of Nursing, Tokyo, Japan
| | - H Takahashi
- Department of Infection Control and Prevention, Toho University Faculty of Nursing, Tokyo, Japan
| | - S Yoshizawa
- Clinical Research Centre, Toho University School of Medicine, Tokyo, Japan; Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - Y Nakanishi
- Department of Oral and Maxillofacial Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - A Kaneko
- Department of Oral and Maxillofacial Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - I Kobayashi
- Department of Infection Control and Prevention, Toho University Faculty of Nursing, Tokyo, Japan.
| |
Collapse
|
20
|
Mori K, Toiyama Y, Otake K, Fujikawa H, Saigusa S, Hiro J, Kobayashi M, Ohi M, Tanaka K, Inoue Y, Kobayashi Y, Kobayashi I, Mohri Y, Goel A, Kusunoki M. Proteomics analysis of differential protein expression identifies heat shock protein 47 as a predictive marker for lymph node metastasis in patients with colorectal cancer. Int J Cancer 2017; 140:1425-1435. [PMID: 27925182 DOI: 10.1002/ijc.30557] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 11/24/2016] [Indexed: 12/21/2022]
Abstract
The discovery of biomarkers to predict the potential for lymph node (LN) metastasis in patients with colorectal cancer (CRC) is essential for developing improved strategies for treating CRC. In the present study, they used isobaric tags for relative and absolute quantitation to conduct a proteomic analysis designed to identify novel biomarkers for predicting LN metastasis in patients with CRC. They identified 60 differentially expressed proteins specifically associated with LN metastasis in CRC patients and classified the molecular and functional characteristics of these proteins by bioinformatic approaches. A literature search led them to select heat shock protein 47 (HSP47) as the most suitable candidate biomarker for predicting LN metastasis. Validation analysis by immunohistochemistry showed that HSP47 expression in patients with CRC and the number of HSP47-positive spindle cells in the tumor stroma were significantly higher compared with those in adjacent normal colonic mucosa, and the number of the latter cells increased with tumor progression. Further, the number of HSP47-positive spindle cells in stroma was a more informative marker for identifying LN metastasis than HSP47expression. Multivariate analysis identified spindle cells that expressed elevated levels of HSP47 as an independent predictive biomarker for CRC with LN metastasis. Moreover, these cells served as an independent marker of disease-free and overall survival of patients with CRC. Their data indicate that the number of HSP47-positive spindle cells in the stroma of CRC may serve as a novel predictive biomarker of LN metastasis, early recurrence and poor prognosis.
Collapse
Affiliation(s)
- Koichiro Mori
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuji Toiyama
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Kohei Otake
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Hiroyuki Fujikawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Susumu Saigusa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Junichiro Hiro
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Minako Kobayashi
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Masaki Ohi
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Koji Tanaka
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yasuhiro Inoue
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Yasuhiko Mohri
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Ajay Goel
- Center for Gastrointestinal Research & Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Research Institute and Charles A Sammons Cancer Center, Baylor University Medical Center, Dallas, TX
| | - Masato Kusunoki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| |
Collapse
|
21
|
Toya C, Muramoto H, Iwai S, Higuchi K, Tsunamoto H, Matsumoto S, Ozawa T, Araki K, Ohnishi T, Kobayashi I, Ohnishi Y, Umezawa S, Niwa A, Hirao K. 1680The assessment of left atrial appendage flow by computed tomography using serial snapshots method. Europace 2017. [DOI: 10.1093/ehjci/eux160.007] [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
|
22
|
Higuchi K, Toya C, Iwai S, Muramoto H, Tsunamoto H, Matsumoto S, Ozawa T, Onishi T, Kobayashi I, Onishi Y, Umezawa S, Niwa A, Yokoyama Y, Hirao K. P871Changes in continuous wavelet transform of left atrium before and after pulmonary vein isolation in patients with persistent atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux151.053] [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
|
23
|
Iwai S, Higuchi K, Toya C, Muramoto H, Tsunamoto H, Matsumoto S, Ozawa T, Araki K, Onishi T, Kobayashi I, Onishi Y, Umezawa S, Niwa A, Hirao K. P1401Distributions and correlation of left atrial low voltage zone detected by high density multi-electrode catheter during atrial fibrillation and sinus rhythm. Europace 2017. [DOI: 10.1093/ehjci/eux158.029] [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
|
24
|
Iwai S, Higuchi K, Toya C, Muramoto H, Tsunamoto H, Matsumoto S, Ozawa T, Araki K, Onishi T, Kobayashi I, Onishi Y, Umezawa S, Niwa A, Hirao K. P934The electroanatomical characteristics of the patients who need epicardial coronary sinus approach for complete conduction block along mitral isthmus. Europace 2017. [DOI: 10.1093/ehjci/eux151.116] [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
|
25
|
Toya C, Higuchi K, Iwai S, Hirotaka M, Tsunamoto H, Matsumoto S, Ozawa T, Araki K, Ohnishi T, Kobayashi I, Ohnishi Y, Umezawa S, Niwa A, Yokoyama Y, Hirao K. P341Comparison of locations between continuous wavelet transform analysis and complex fractionated atrial electrogram in patients with persistent atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux141.067] [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
|
26
|
Kobayashi I, Tozawa Y, Ueki M, Takezaki S, Watanabe S, Iwafuchi H, Yamada M, Kuwana M, Ariga T. Tacrolimus in combination with methotrexate and corticosteroid for the treatment of child-onset anti-signal recognition particle antibody-positive necrotizing myopathy. Scand J Rheumatol 2016; 46:409-410. [PMID: 27897449 DOI: 10.1080/03009742.2016.1241297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- I Kobayashi
- a Center for Pediatric Allergy and Rheumatology , KKR Medical Center , Sapporo , Japan.,b Department of Pediatrics , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Y Tozawa
- b Department of Pediatrics , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - M Ueki
- b Department of Pediatrics , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - S Takezaki
- b Department of Pediatrics , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - S Watanabe
- c Department of Pediatric Neurology , Shizuoka Children's Hospital , Shizuoka , Japan
| | - H Iwafuchi
- d Department of Pathology , Shizuoka Children's Hospital , Shizuoka , Japan
| | - M Yamada
- b Department of Pediatrics , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - M Kuwana
- e Department of Allergy and Rheumatology , Nippon Medical School Graduate School of Medicine , Tokyo , Japan
| | - T Ariga
- b Department of Pediatrics , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| |
Collapse
|
27
|
Yamashita J, Kobayashi I, Tatematsu K, Sezutsu H, Noda K, Ishihara H. Sandwich ELISA Using a Mouse/Human Chimeric CSLEX-1 Antibody. Clin Chem 2016; 62:1516-1523. [PMID: 27591290 DOI: 10.1373/clinchem.2016.260968] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/21/2016] [Indexed: 11/06/2022]
Abstract
BACKGROUND An assay using a mouse antisialyl Lewis X (sLeX) antibody (CSLEX-1) is used clinically for screening and monitoring patients with breast cancer in Japan. However, the IgM isoform of CSLEX-1 is not preferred for the assay because the bulkiness of IgM generally causes poor accessibility to the antigen. To solve this problem, we developed an antisLeX mouse/human chimeric IgG antibody, CH-CSLEX-1, using transgenic silkworms. The performance of a homologous sandwich ELISA of CH-CSLEX1 was then evaluated. METHODS To generate CH-CSLEX-1, we used a GAL4/UAS binary gene expression system in transgenic silkworms. The reactivities of CSLEX-1 and CH-CSLEX-1 were determined in a Biacore analysis. To confirm antigen specificity, 3 antigens [sLeX, sLeA, and Lewis Y (LeY)] were used. RESULTS CH-CSLEX-1 formed correctly as an IgG class of immunoglobulin molecule with an isoelectric point close to the predicted value. The best combination for capturing and probing in a sandwich ELISA was determined as a homologous combination of CH-CSLEX-1. The CH-CSLEX-1 assay specifically detected sLeX, but not sLeA and LeY. A correlation analysis with 107 human samples showed good concordance between the conventional CSLEX-1 assay (homologous sandwich ELISA using CSLEX-1) and the CH-CSLEX-1 assay (r = 0.98). Moreover, the CH-CSLEX-1 assay was not affected by either human antimouse IgG antibodies (HAMA IgG) or HAMA IgM. CONCLUSIONS The mouse/human chimeric antibody CH-CSLEX-1 allowed the establishment of a highly specific sandwich ELISA for sLeX that was not affected by HAMA.
Collapse
Affiliation(s)
- J Yamashita
- R&D Department, Nittobo Medical Co., Ltd., Koriyama, Japan
| | - I Kobayashi
- Transgenic Silkworm Research Unit, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - K Tatematsu
- Transgenic Silkworm Research Unit, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - H Sezutsu
- Transgenic Silkworm Research Unit, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - K Noda
- R&D Department, Nittobo Medical Co., Ltd., Koriyama, Japan
| | - H Ishihara
- R&D Department, Nittobo Medical Co., Ltd., Koriyama, Japan;
| |
Collapse
|
28
|
Kitahara G, Kamata R, Sasaki Y, El-Sheikh Ali H, Mido S, Kobayashi I, Hemmi K, Osawa T. Changes in peripheral anti-Müllerian hormone concentration and their relationship with testicular structure in beef bull calves. Domest Anim Endocrinol 2016; 57:127-32. [PMID: 27565239 DOI: 10.1016/j.domaniend.2016.06.005] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/14/2016] [Accepted: 06/14/2016] [Indexed: 11/20/2022]
Abstract
The aim of this study was to clarify the time-course of changes in anti-Müllerian hormone (AMH) and testosterone (T) concentrations in peripheral blood and to determine the relationships between blood AMH concentration and testicular development during the early postnatal and prepubertal periods in beef bull calves. A total of 17 Japanese Black bull calves were enrolled in this study. The wk in which the calf was born (within 6 d after birth) was defined as M 0. Blood samples were taken once in every mo from M 0 to M 6 from each bull calf, and plasma AMH and T concentrations were determined. Of the 17 calves, 10 were castrated at 6 mo of age (prepuberty) and the right testis was histologically examined. Plasma AMH concentration (means ± SE) at M 0, 1, and 2 were 123.5 ± 9.8, 189.6 ± 18.7, and 254.6 ± 14.1 ng/mL, respectively. From M 0 through M 2, plasma AMH concentration was significantly greater each mo than in the previous mo (P < 0.05); however, plasma AMH concentration significantly decreased over the last 3 mo of the study (P < 0.05). The average age at which plasma AMH concentration was the highest was 2.3 ± 0.1 mo of age. Plasma T concentration significantly increased from M 0 (0.18 ± 0.02 ng/mL) until M 6 (6.52 ± 1.41 ng/mL). Plasma AMH and T concentrations at M 4, 5, and 6 were significantly negatively correlated (P < 0.05). Linear regression did not reveal a significant relationship between Sertoli or Leydig cell numbers and plasma AMH or T concentrations, respectively. In conclusion, blood AMH concentration peaks at 2 mo of age and is negatively correlated with blood T concentration from 4 to 6 mo of age. Although prepubertal blood AMH or T concentrations did not reflect Sertoli or Leydig cell numbers at the end of the prepubertal period, blood AMH concentration may be indicative of abnormal Sertoli cells function.
Collapse
Affiliation(s)
- G Kitahara
- Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan.
| | - R Kamata
- Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Y Sasaki
- Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan; Organization for Promotion of Tenure Track, University of Miyazaki, Miyazaki 889-2192, Japan
| | - H El-Sheikh Ali
- Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan; Department of Theriogenology, Faculty of Veterinary Medicine, University of Mansoura, Mansoura 35516, Egypt
| | - S Mido
- Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - I Kobayashi
- Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan; Sumiyoshi Livestock Science Station, Faculty of Agriculture, University of Miyazaki, Miyazaki 880-0121, Japan
| | - K Hemmi
- Sumiyoshi Livestock Science Station, Faculty of Agriculture, University of Miyazaki, Miyazaki 880-0121, Japan
| | - T Osawa
- Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
| |
Collapse
|
29
|
Otake K, Uchida K, Ide S, Kobayashi Y, Kobayashi I, Kusunoki M. Identification of DDX39A as a Potential Biomarker for Unfavorable Neuroblastoma Using a Proteomic Approach. Pediatr Blood Cancer 2016; 63:221-7. [PMID: 26469522 DOI: 10.1002/pbc.25778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 04/03/2015] [Revised: 08/04/2015] [Accepted: 09/02/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND Malignant potential in unfavorable neuroblastoma (NB) is dependent on an undifferentiated status. The aim of this study was to identify a novel biomarker associated with the undifferentiated status of NB in vitro and to evaluate its prognostic implication. PROCEDURE Shotgun proteomic analysis was performed in undifferentiated and all trans-retinoic acid induced differentiated NB cells in vitro. An identified protein was verified by multiple reaction monitoring (MRM) and evaluated by Western blot analysis. Immunohistochemistry (IHC) was used to examine the expression of the identified protein in 33 primary NB tissues. RESULTS Twelve proteins, including ATP-dependent RNA helicase (DDX39A), were only detected in undifferentiated NB cells. A peptide of DDX39A was detected at a significantly higher level in undifferentiated IMR-32 (P = 0.002) and LA-N-1 (P < 0.001) cells by MRM. Western blot analysis revealed that DDX39A expression was significantly higher in undifferentiated IMR-32 (P = 0.02) and LA-N-1 (P = 0.025) cells. IHC demonstrated that DDX39A was highly expressed in the primary tumor tissues of patients with poor prognosis, and univariate and multivariate survival analyses showed that DDX39A expression could be an independent unfavorable prognostic factor (P = 0.027). CONCLUSIONS DDX39A is a potential biomarker for unfavorable NB using a proteomic approach. Evaluation of DDX39A protein expression in NB tumor tissues may provide complementary prognostic information for further subclassification of these tumors.
Collapse
Affiliation(s)
- Kohei Otake
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Keiichi Uchida
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Shozo Ide
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Tsu, Mie, Japan
| | - Masato Kusunoki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| |
Collapse
|
30
|
Kaneko I, Iwanaga S, Kato T, Kobayashi I, Yuda M. Genome-Wide Identification of the Target Genes of AP2-O, a Plasmodium AP2-Family Transcription Factor. PLoS Pathog 2015; 11:e1004905. [PMID: 26018192 PMCID: PMC4446032 DOI: 10.1371/journal.ppat.1004905] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 04/21/2015] [Indexed: 12/20/2022] Open
Abstract
Stage-specific transcription is a fundamental biological process in the life cycle of the Plasmodium parasite. Proteins containing the AP2 DNA-binding domain are responsible for stage-specific transcriptional regulation and belong to the only known family of transcription factors in Plasmodium parasites. Comprehensive identification of their target genes will advance our understanding of the molecular basis of stage-specific transcriptional regulation and stage-specific parasite development. AP2-O is an AP2 family transcription factor that is expressed in the mosquito midgut-invading stage, called the ookinete, and is essential for normal morphogenesis of this stage. In this study, we identified the genome-wide target genes of AP2-O by chromatin immunoprecipitation-sequencing and elucidate how this AP2 family transcription factor contributes to the formation of this motile stage. The analysis revealed that AP2-O binds specifically to the upstream genomic regions of more than 500 genes, suggesting that approximately 10% of the parasite genome is directly regulated by AP2-O. These genes are involved in distinct biological processes such as morphogenesis, locomotion, midgut penetration, protection against mosquito immunity and preparation for subsequent oocyst development. This direct and global regulation by AP2-O provides a model for gene regulation in Plasmodium parasites and may explain how these parasites manage to control their complex life cycle using a small number of sequence-specific AP2 transcription factors. Although malarial parasites have a complex life cycle, they harbor only 30 transcription factors in their genome. The majority of these transcription factors belong to a single family referred to as the AP2 family. Our previous study suggested that stage-specific AP2 family transcription factors have critical roles in maintaining the Plasmodium parasite life cycle. However, it remains fairly elusive as to how these transcription factors regulate each stage. AP2-O is an AP2 family transcription factor that is expressed during the mosquito midgut-invading stage, the ookinete, and is essential for normal development of this stage. In the present study, we identified the entire set of AP2-O target genes to elucidate how this AP2 family transcription factor contributes to the formation of this stage. Our results showed that AP2-O directly regulates 10% of the parasite genome and is involved in the whole process of mosquito midgut-invasion by ookinetes. The global and comprehensive regulation by the AP2 family transcription factor that we revealed provides a model for transcriptional regulation of this parasite and may explain how malarial parasites regulate their complex life cycle using a small number of sequence-specific transcription factors.
Collapse
Affiliation(s)
- Izumi Kaneko
- Department of Medical Zoology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Shiroh Iwanaga
- Department of Medical Zoology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Tomomi Kato
- Department of Medical Zoology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Issei Kobayashi
- Core-Lab, Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie, Japan
| | - Masao Yuda
- Department of Medical Zoology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
- * E-mail:
| |
Collapse
|
31
|
Kimura A, Yoshikura N, Koumura A, Hayashi Y, Kobayashi Y, Kobayashi I, Yano T, Inuzuka T. Identification of target antigens of naturally occurring autoantibodies in cerebrospinal fluid. J Proteomics 2015; 128:450-7. [PMID: 25979775 DOI: 10.1016/j.jprot.2015.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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] [Received: 02/28/2015] [Revised: 04/20/2015] [Accepted: 05/06/2015] [Indexed: 02/07/2023]
Abstract
UNLABELLED Naturally occurring autoantibodies have natural physiologic functions related to normal cell processes. However, the repertoire of naturally occurring autoantibodies against neuronal antigens in CSF is unclear. The purpose of this study was to identify naturally occurring autoantibodies against neuronal antigens in CSF from patients with various neurologic diseases by proteomics-based analysis. The CSF samples were collected from 77 patients with various neurologic disorders. The antigen source for 2-dimensional immunoblotting was the SH-SY5Y human neuroblastoma cell line. There were 8 spots recognized in CSF from more than one-fourth of the 77 patients including all patient groups and these spots were recognized in intravenous immunoglobulin preparations. These antigen spots were identified as heat shock 105-kDa/110-kDa protein 1, isoform CRA_b, 78-kDa glucose-regulated protein, heat shock cognate 71-kDa protein, tubulin beta chain, vimentin (2 spots), and 60-kDa heat shock protein, mitochondrial; we could not identify the protein name corresponding to 1 of the 8 spots. In summary, there were 6 proteins identified that were main target antigens that reacted with naturally occurring autoantibodies in CSF from patients with varied neurologic disorders; the functions of autoantibodies against the identified antigens are unknown and may be clarified with further studies. BIOLOGICAL SIGNIFICANCE Naturally occurring autoantibodies may have important functions in tissue homeostasis. In this study, we identified 6 common target antigens that reacted with autoantibodies in cerebrospinal fluid (CSF) from patients, independent of disease type. These findings may clarify the importance of naturally occurring autoantibodies in CSF and the use of these antibodies potentially may be a novel therapy for various neurologic disorders.
Collapse
Affiliation(s)
- Akio Kimura
- Department of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu City, Gifu, Japan.
| | - Nobuaki Yoshikura
- Department of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu City, Gifu, Japan
| | - Akihiro Koumura
- Department of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu City, Gifu, Japan
| | - Yuichi Hayashi
- Department of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu City, Gifu, Japan
| | - Yuko Kobayashi
- Life Science Research Center, Center for Molecular Biology and Genetics, Mie University, Tsu City, Mie, Japan
| | - Issei Kobayashi
- Life Science Research Center, Center for Molecular Biology and Genetics, Mie University, Tsu City, Mie, Japan
| | - Takeo Yano
- Graduate School of Regional Innovation Studies, Mie University, Tsu City, Mie, Japan
| | - Takashi Inuzuka
- Department of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu City, Gifu, Japan
| |
Collapse
|
32
|
Okamoto R, Goto I, Kobayashi I, Shimojo N, Dohi K, Nakamura M, Ito M. Elongator Protein 2 Plays an Important Role in Cardiac Hypertrophy In Vitro and In Vivo. J Card Fail 2014. [DOI: 10.1016/j.cardfail.2014.07.315] [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]
|
33
|
Koike T, Suzuki Y, Genyu S, Kobayashi I, Komori H, Otsu H, Sakuma H, Sakuma K, Sarausad EM, Shimada K, Shinozuka T, Tamura H, Tsukada K, Ukai M, Yamamoto TO. Comprehensive data on ionising radiation from Fukushima Daiichi nuclear power plant in the town of Miharu, Fukushima Prefecture: The Misho Project. J Radiol Prot 2014; 34:675-698. [PMID: 25125455 DOI: 10.1088/0952-4746/34/3/675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Data related to radioactivity released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident on 15 March 2011 gathered by residents of Miharu, Fukushima Prefecture, and by Tohoku University are presented. These data sets consist of (1) the earliest radiation monitoring by a Geiger counter in the town, (2) ratios of radioactivity between (132)Te and (137)Cs for a wide area between Fukushima and Tokyo, (3) radiation measurement of soil samples collected from 18 school grounds, and (4) external radiation exposure of 1400 students using OSL badges. By combining and analysing these various data sets, a curve for the cumulative total external exposure as a function of time, with 16 : 00 h on 15 March 2011 being time zero, is obtained. The average cumulative external dosage is estimated to be 10 mSv (σ = 4.2 mSv) over 10 years. In addition, the initiative that the residents of Miharu took in response to the FDNPP accident, which became known as The Misho Project (MP), is documented; in particular, the time at which the municipality instructed the immediate ingestion of iodine tablets by those under the age of 40, 13 : 00 h on 15 March 2011, is assessed.
Collapse
Affiliation(s)
- T Koike
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Y Suzuki
- Municipal government of Miharu, Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan
| | - S Genyu
- Fukujyuji-Temple, Miharu-machi, Tamura-gun, Fukushima, 963-7767, Japan
| | - I Kobayashi
- Nagase Landauer, Ltd, Suwa, Tsukuba, Ibaraki, 300-2686, Japan
| | - H Komori
- Nagase Landauer, Ltd, Suwa, Tsukuba, Ibaraki, 300-2686, Japan
| | - H Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sakuma
- Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan
| | - K Sakuma
- Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan
| | - E M Sarausad
- Microsoft Corporation, Redmond, WA, USA
- Alacer Group LLC, Bellevue, WA, USA
| | - K Shimada
- Cyclotron Radioisotope Center, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - T Shinozuka
- Cyclotron Radioisotope Center, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - H Tamura
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - K Tsukada
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - M Ukai
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - T O Yamamoto
- Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan
| |
Collapse
|
34
|
Shirasawa K, Fukuoka H, Matsunaga H, Kobayashi Y, Kobayashi I, Hirakawa H, Isobe S, Tabata S. Genome-wide association studies using single nucleotide polymorphism markers developed by re-sequencing of the genomes of cultivated tomato. DNA Res 2013; 20:593-603. [PMID: 23903436 PMCID: PMC3859326 DOI: 10.1093/dnares/dst033] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [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] [Indexed: 11/16/2022] Open
Abstract
With the aim of understanding relationship between genetic and phenotypic variations in cultivated tomato, single nucleotide polymorphism (SNP) markers covering the whole genome of cultivated tomato were developed and genome-wide association studies (GWAS) were performed. The whole genomes of six tomato lines were sequenced with the ABI-5500xl SOLiD sequencer. Sequence reads covering ∼13.7× of the genome for each line were obtained, and mapped onto tomato reference genomes (SL2.40) to detect ∼1.5 million SNP candidates. Of the identified SNPs, 1.5% were considered to confer gene functions. In the subsequent Illumina GoldenGate assay for 1536 SNPs, 1293 SNPs were successfully genotyped, and 1248 showed polymorphisms among 663 tomato accessions. The whole-genome linkage disequilibrium (LD) analysis detected highly biased LD decays between euchromatic (58 kb) and heterochromatic regions (13.8 Mb). Subsequent GWAS identified SNPs that were significantly associated with agronomical traits, with SNP loci located near genes that were previously reported as candidates for these traits. This study demonstrates that attractive loci can be identified by performing GWAS with a large number of SNPs obtained from re-sequencing analysis.
Collapse
Affiliation(s)
- Kenta Shirasawa
- 1 Kazusa DNA Research Institute, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Takezaki S, Yamazaki Y, Okura Y, Yamada M, Kobayashi I, Ariga T. AB1198 IL-18 is a hallmark of juvenile dermatomyositis-associated interstitial pneumonia. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1196] [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: 11/04/2022]
|
36
|
Kobayashi Y, Kobayashi I. Microwounding is a pivotal factor for the induction of actin-dependent penetration resistance against fungal attack. Planta 2013; 237:1187-1198. [PMID: 23328898 DOI: 10.1007/s00425-013-1837-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 12/21/2012] [Indexed: 06/01/2023]
Abstract
Induced penetration resistance is triggered by failed penetration attempts of nonpathogenic fungi. The resistance mechanism is an important nonhost reaction in plants that can block the invasion of filamentous pathogens such as fungi and oomycetes. However, it remains unclear whether the mechanical stimuli accompanying fungal penetration play a role in induced penetration resistance, whereas the perforation of the cell wall may provide significant stimuli to plant cells. Here, we used microneedles or biolistic bombardment to mimic fungal penetration pegs and a micromanipulation transfer technique of the bio-probe, a germling of Blumeria graminis hordei, to the wounded cells to demonstrate that microwounds derived from fungal penetration attempts may trigger induced penetration resistance in plant cells. When preinoculated with the nonpathogenic fungi Erysiphe pisi and Colletotrichum orbiculare, which were unable to penetrate a barley cell, the penetration of a bio-probe that was transferred by micromanipulation onto the same cell was completely blocked. Fungal penetration was essential to the triggering of induced penetration resistance because a penetration-peg-defective mutant of C. orbiculare completely lacked the ability to trigger resistance. The artificial microwounds significantly, but not completely, blocked the penetration of the bio-probe. Treatment with the actin polymerization inhibitor cytochalasin A or expression of the actin depolymerizing protein HvPro1 caused complete ablation of the induced penetration resistance triggered by either failed fungal penetration or artificial microwounds. These results strongly suggest that microwounding may trigger actin-dependent induced penetration resistance. Manipulation of induced penetration resistance may be a promising target to improve basic disease resistance in plants.
Collapse
Affiliation(s)
- Yuhko Kobayashi
- Core-Lab, Graduate School of Regional Innovation Studies, Mie University, 1577 Kurima-Machiya-cho, Tsu, Mie, 514-8507, Japan
| | | |
Collapse
|
37
|
Endo A, Katoh T, Vasudeva SB, Kobayashi I, Okano T. A preliminary study to determine the diagnostic reference level using dose-area product for limited-area cone beam CT. Dentomaxillofac Radiol 2013; 42:20120097. [PMID: 23420859 PMCID: PMC3667520 DOI: 10.1259/dmfr.20120097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [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] [Received: 03/14/2012] [Revised: 07/27/2012] [Accepted: 08/01/2012] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES The aim of this study was to measure the dose-area product (DAP) of limited-area cone beam CT (CBCT) units used by dental offices, and to evaluate the rationale of the DAP with an aid of optically stimulated luminescence (OSL) dosemeter in measuring radiation dose. METHOD The DAPs of 21 CBCT units used in the dental offices of Tokyo and the surrounding areas from five different manufacturers were measured using OSL nanoDot dosemeter. An assembly of OSL dosemeters with an X-ray film was exposed by CBCT units at exposure parameters commonly used in each dental office. DAP values were then calculated as expressed in mGy cm(2). RESULTS DAP values ranged from 126.7 mGy cm(2) to 1476.9 mGy cm(2), depending on the units used. CONCLUSION OSL dosemeter coupled with film can be utilized for a large-scale study to measure DAP. The DAP values for individual CBCT units depend not only on the field of view, but also on the exposure parameters adapted by the dental offices.
Collapse
Affiliation(s)
- A Endo
- Department of Radiology, Showa University School of Dentistry, Tokyo, Japan
- Department of Radiological Sciences, Graduate School of Human Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - T Katoh
- Department of Radiological Sciences, Graduate School of Human Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - SB Vasudeva
- Department of Radiology, Showa University School of Dentistry, Tokyo, Japan
| | | | - T Okano
- Department of Radiology, Showa University School of Dentistry, Tokyo, Japan
| |
Collapse
|
38
|
Okura Y, Nawate M, Takahashi Y, Kobayashi I, Yamada M, Ariga T. Rheumatoid factor-positive synovitis in a patient with C3 deficiency. Scand J Rheumatol 2012; 41:405-6. [DOI: 10.3109/03009742.2012.698302] [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: 11/13/2022]
|
39
|
Kobayashi I, Wada Y, Hori Y, Neves MA, Uemura K, Nakajima M. Microchannel Emulsification Using Stainless-Steel Chips: Oil Droplet Generation Characteristics. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201200044] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
40
|
Yi Chun DX, Alexandre H, Edith B, Nacera O, Julie P, Chantal J, Eric R, Zhang X, Jin Y, Miravete M, Dissard R, Klein J, Gonzalez J, Caubet C, Pecher C, Pipy B, Bascands JL, Mercier-Bonin M, Schanstra J, Buffin-Meyer B, Claire R, Rigothier C, Richard D, Sebastien L, Moin S, Chantal B, Christian C, Jean R, Migliori M, Migliori M, Cantaluppi V, Mannari C, Medica D, Giovannini L, Panichi V, Goldwich A, Alexander S, Andre G, Amann K, Migliorini A, Sagrinati C, Angelotti ML, Mulay SR, Ronconi E, Peired A, Romagnani P, Anders HJ, Chiang WC, Lai CF, Peng WH, Wu CF, Chang FC, Chen YT, Lin SL, Chen YM, Wu KD, Lu KS, Tsai TJ, Virgine O, Qing Feng F, Zhang SY, Dominique D, Vincent A, Marina C, Philippe L, Georges G, Pawlak A, Sahali D, Matsumoto S, Kiyomoto H, Ichimura A, Dan T, Nakamichi T, Tsujita T, Akahori K, Ito S, Miyata T, Xie S, Zhang B, Shi W, Yang Y, Nagasu H, Satoh M, Kidokoro K, Nishi Y, Ihoriya C, Kadoya H, Sasaki T, Kashihara N, Wu CF, Chang FC, Chen YT, Chou YH, Duffield J, Lin SL, Rocca C, Rocca C, Gregorini M, Corradetti V, Valsania T, Bedino G, Bosio F, Pattonieri EF, Esposito P, Sepe V, Libetta C, Rampino T, Dal Canton A, Bedino G, Gregorini M, Corradetti V, Rocca C, Pattonieri EF, Valsania T, Bosio F, Esposito P, Sepe V, Libetta C, Rampino T, Dal Canton A, Omori H, Kawada N, Inoue K, Ueda Y, Yamamoto R, Matsui I, Kaimori J, Takabatake Y, Moriyama T, Isaka Y, Rakugi H, Wasilewska A, Taranta-Janusz K, Deebek W, Kuroczycka-Saniutycz E, Lee AS, Lee AS, Lee JE, Jung YJ, Kang KP, Lee S, Kim W, Arfian N, Emoto N, Yagi K, Nakayama K, Hartopo AB, Nugrahaningsih DA, Yanagisawa M, Hirata KI, Munoz-Felix JM, Lopez-Novoa JM, Martinez-Salgado C, Oujo B, Munoz-Felix JM, Arevalo M, Bernabeu C, Perez-Barriocanal F, Lopez-Novoa JM, Jesper K, Nathalie V, Pierre G, Yi Chun DX, Alexandre H, Eric R, Iyoda M, Shibata T, Matsumoto K, Shindo-Hirai Y, Kuno Y, Wada Y, Akizawa T, Schwartz I, Schwartz D, Prot Bertoye C, Prot Bertoye C, Terryn S, Claver J, Beghdadi WB, Monteiro R, Blank U, Devuyst O, Daugas E, Van Beneden K, Geers C, Pauwels M, Mannaerts I, Van den Branden C, Van Grunsven LA, Seckin I, Pekpak M, Uzunalan M, Uruluer B, Kokturk S, Ozturk Z, Sonmez H, Yaprak E, Furuno Y, Tsutsui M, Morishita T, Shimokawa H, Otsuji Y, Yanagihara N, Kabashima N, Ryota S, Kanegae K, Miyamoto T, Nakamata J, Ishimatsu N, Tamura M, Nakagawa T, Nakagawa T, Ichikawa K, Miyamoto M, Takabayashi D, Yamazaki H, Kakeshita K, Koike T, Kagitani S, Tomoda F, Hamashima T, Ishii Y, Inoue H, Sasahara M, El Machhour F, Kerroch M, Mesnard L, Chatziantoniou C, Dussaule JC, Inui K, Sasai F, Maruta Y, Nishiwaki H, Kawashima E, Inoue Y, Yoshimura A, Matsumoto K, Matsumoto K, Iyoda M, Shibata T, Wada Y, Shindo-Hirai Y, Kuno Y, Akizawa T, Musacchio E, Priante G, Valvason C, Sartori L, Baggio B, Kim JH, Gross O, Diana R, Gry DH, Asimal B, Johanna T, Imke SE, Lydia W, Gerhard-Anton M, Hassan D, Cano JL, Griera M, Olmos G, Martin P, Cortes MA, Lopez-Ongil S, Rodriguez-Puyol D, DE Frutos S, Gonzalez M, DE Frutos S, Cano JL, Luengo A, Martin P, Rodriguez-Puyol M, Calleros L, Lupica R, Lacquaniti A, Donato V, Maggio R, Mastroeni C, Lucisano S, Cernaro V, Fazio MR, Quartarone A, Buemi M, Kacik M, Goedicke S, Eggert H, Hoyer JD, Wurm S, Wurm S, Steege A, Banas M, Kurtz A, Banas B, Lasagni L, Lazzeri E, Peired A, Angelotti ML, Ronconi E, Romoli S, Romagnani P, Schaefer I, Teng B, Worthmann K, Haller H, Schiffer M, Prattichizzo C, Netti GS, Rocchetti MT, Cormio L, Carrieri G, Stallone G, Grandaliano G, Ranieri E, Gesualdo L, Kucher A, Smirnov A, Parastayeva M, Beresneva O, Kayukov I, Zubina I, Ivanova G, Abed A, Schlekenbach L, Foglia B, Chatziantoniou C, Kwak B, Chadjichristos C, Queisser N, Schupp N, Brand S, Himer L, Himer L, Szebeni B, Sziksz E, Saijo S, Kis E, Prokai A, Banki NF, Fekete A, Tulassay T, Vannay A, Hegner B, Schaub T, Lange C, Dragun D, Klinkhammer BM, Rafael K, Monika M, Anna M, Van Roeyen C, Boor P, Eva Bettina B, Simon O, Esther S, Floege J, Kunter U, Hegner B, Janke D, Schaub T, Lange C, Jankowski J, Dragun D, Hayashi M, Takamatsu I, Horimai C, Yoshida T, Seno DI Marco G, Koenig M, Stock C, Reiermann S, Amler S, Koehler G, Fobker M, Buck F, Pavenstaedt H, Lang D, Brand M, Plotnikov E, Morosanova M, Pevzner I, Zorova L, Pulkova N, Zorov D, Wornle M, Ribeiro A, Belling F, Merkle M, Nakazawa D, Nishio S, Shibasaki S, Tomaru U, Akihiro I, Kobayashi I, Imanishi Y, Kurajoh M, Nagata Y, Yamagata M, Emoto M, Michigami T, Ishimura E, Inaba M, Nishi Y, Satoh M, Sasaki T, Kashihara N, Wu CC, Lu KC, Chen JS, Chu P, Lin YF, Eller K, Schroll A, Banas M, Kirsch A, Huber J, Weiss G, Theurl I, Rosenkranz AR, Zawada A, Rogacev K, Achenbach M, Fliser D, Held G, Heine GH, Miyamoto Y, Iwao Y, Watanabe H, Kadowaki D, Ishima Y, Chuang VTG, Sato K, Otagiri M, Maruyama T, Ueda Y, Iwatani H, Isaka Y, Watanabe H, Honda D, Miyamoto Y, Noguchi T, Kadowaki D, Ishima Y, Tanaka M, Tanaka H, Fukagawa M, Otagiri M, Maruyama T, Wornle M, Ribeiro A, Pircher J, Koppel S, Mannell H, Krotz F, Merkle M, Virzi GM, Bolin C, Cruz D, Scalzotto E, De Cal M, Vescovo G, Ronco C, Virzi GM, Bolin C, Cruz D, Scalzotto E, De Cal M, Vescovo G, Ronco C, Grobmayr R, Lech M, Ryu M, Anders HJ, Aoshima Y, Mizobuchi M, Ogata H, Kumata C, Nakazawa A, Kondo F, Ono N, Koiwa F, Kinugasa E, Akizawa T, Freisinger W, Lale N, Lampert A, Ditting T, Heinlein S, Schmieder RE, Veelken R, Nave H, Perthel R, Suntharalingam M, Bode-Boger S, Beutel G, Kielstein J, Rodrigues-Diez R, Rodrigues-Diez R, Rayego-Mateos S, Lavoz C, Stark Aroeira LG, Orejudo M, Alique M, Ortiz A, Egido J, Ruiz-Ortega M, Oskar W, Rusan C, Schaub T, Hegner B, Dragun D, Padberg JS, Wiesinger A, Brand M, Seno DI Marco G, Reuter S, Grabner A, Kentrup D, Lukasz A, Oberleithner H, Pavenstadt H, Kumpers P, Eberhardt HU, Skerka C, Chen Q, Hallstroem T, Hartmann A, Kemper MJ, Zipfel PF, N'gome-Sendeyo K, Fan QF, Zhang SY, Pawlak A, Sahali D, Wornle M, Ribeiro A, Merkle M, Toblli J, Toblli J, Cao G, Giani JF, Dominici FP, Kim JS, Yang JW, Kim MK, Han BG, Choi SO. Experimental pathology. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs241] [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
|
41
|
Tanaka S, Kobayashi I, Oka H, Fujii K, Watanabe T, Nagashima T, Hori T. Drug-resistance gene expression and progression of astrocytic tumors. Brain Tumor Pathol 2012; 18:131-7. [PMID: 11908869 DOI: 10.1007/bf02479426] [Citation(s) in RCA: 6] [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] [Indexed: 12/01/2022]
Abstract
To clarify the influence of biochemotherapy on the progression of astrocytic tumors, the expression of O6-methylguanine DNA-methyltransferase (MGMT) mRNA, as well as of other drug-resistance- and drug-sensitivity-related genes such as multidrug resistance gene 1, multidrug resistance-associated protein, glutathione S-transferase-pi, DNA topoisomerase II, and interferon receptor mRNA, and the interferon regulatory factor (IRF)-1 and -2 ratios in gliomas were investigated by quantitative reverse transcription-polymerase chain reaction (RT-PCR). The mean MGMT/beta2-microglobulin (beta2-MG) ratio for 130 neuroepithelial tumors was 8.2 +/- 17.8. The mean ratio of 45 glioblastomas was significantly higher than that for the other 85 tumors. In contrast, the mean of 26 low-grade gliomas was significantly lower than that of other tumors. The mean IRF-1/IRF-2 ratio of 16 other brain tumors that mainly consisted of medulloblastomas was significantly greater than that of the other 114 tumors. Almost no significant differences were observed between primary and recurrent tumors in the expression of any gene, and before and after therapy with corresponding drugs. The mean MGMT/beta2-MG ratio in primary glioblastomas was significantly higher than that in secondary tumors. These findings suggest that native drug resistance is more important than acquired resistance when glioma therapy is considered.
Collapse
MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/biosynthesis
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- Adult
- Aged
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Astrocytoma/drug therapy
- Astrocytoma/genetics
- Astrocytoma/pathology
- Base Sequence
- Brain Neoplasms/drug therapy
- Brain Neoplasms/genetics
- Brain Neoplasms/pathology
- Chemotherapy, Adjuvant
- DNA Topoisomerases, Type I/biosynthesis
- DNA Topoisomerases, Type I/genetics
- DNA Topoisomerases, Type II/biosynthesis
- DNA Topoisomerases, Type II/genetics
- Disease Progression
- Drug Resistance, Multiple/genetics
- Drug Resistance, Neoplasm/genetics
- Female
- Gene Expression Regulation, Neoplastic
- Glioblastoma/drug therapy
- Glioblastoma/genetics
- Glioblastoma/pathology
- Humans
- Male
- Middle Aged
- Molecular Sequence Data
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Nerve Tissue Proteins/biosynthesis
- Nerve Tissue Proteins/genetics
- O(6)-Methylguanine-DNA Methyltransferase/biosynthesis
- O(6)-Methylguanine-DNA Methyltransferase/genetics
- Receptors, Interferon/biosynthesis
- Receptors, Interferon/genetics
Collapse
Affiliation(s)
- S Tanaka
- Department of Neurosurgery, Kitasato Institute Medical Center Hospital, Kitamoto, Saitama, Japan.
| | | | | | | | | | | | | |
Collapse
|
42
|
Endo A, Katoh T, Kobayashi I, Joshi R, Sur J, Okano T. Characterization of optically stimulated luminescence dosemeters to measure organ doses in diagnostic radiology. Dentomaxillofac Radiol 2012; 41:211-6. [PMID: 22116136 PMCID: PMC3520283 DOI: 10.1259/dmfr/98708146] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [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] [Received: 12/06/2010] [Revised: 01/26/2011] [Accepted: 02/03/2011] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The aim of this study was to assess the characteristics of an optically stimulated luminescence dosemeter (OSLD) for use in diagnostic radiology and to apply the OSLD in measuring the organ doses by panoramic radiography. METHODS The dose linearity, energy dependency and angular dependency of aluminium oxide-based OSLDs were examined using an X-ray generator to simulate various exposure settings in diagnostic radiology. The organ doses were then measured by inserting the dosemeters into an anthropomorphic phantom while using three panoramic machines. RESULTS The dosemeters demonstrated consistent dose linearity (coefficient of variation<1.5%) and no significant energy dependency (coefficient of variation<1.5%) under the applied exposure conditions. They also exhibited negligible angular dependency (≤ 10%). The organ doses of the X-ray as a result of panoramic imaging by three machines were calculated using the dosemeters. CONCLUSION OSLDs can be utilized to measure the organ doses in diagnostic radiology. The availability of these dosemeters in strip form proves to be reliably advantageous.
Collapse
Affiliation(s)
- A Endo
- Department of Radiology, Showa University Dental Hospital, Ota-ku, Tokyo, Japan
- Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - T Katoh
- Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | | | - R Joshi
- Department of Radiology, Showa University Dental Hospital, Ota-ku, Tokyo, Japan
| | - J Sur
- Department of Radiology, Showa University Dental Hospital, Ota-ku, Tokyo, Japan
| | - T Okano
- Department of Radiology, Showa University Dental Hospital, Ota-ku, Tokyo, Japan
| |
Collapse
|
43
|
Nakamura K, Nagata D, Kajikawa K, Kobayashi I, Zennami K, Nishikawa G, Yoshizawa T, Tobiume M, Aoki S, Yamada Y, Sumitomo M. Retroperitoneal approach for laparoscopic nephroureterectomy with stripping technique: extracorporeal ligation of ureter and ureteral catheter. Asian J Endosc Surg 2012; 5:42-5. [PMID: 22776343 DOI: 10.1111/j.1758-5910.2011.00110.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The pluck and stripping techniques are used for lower ureter management in renal pelvic cancer patients. Herein, we report our experience of extracorporeal ligation of the ureter and the ureteral catheter through the trocar port, which differs from conventional laparoscopic ligation in the retroperitoneal space. This technique was selected to reduce the time needed for ureter management using the stripping technique and to provide secure ligation. MATERIALS AND SURGICAL TECHNIQUE We performed this stripping technique in patients with T1 and T2 stage renal pelvic cancer without imaging-evident lymph node metastasis. After transurethrally placing a ureteral catheter, we resected the circumference of the ureteral orifice. After laparoscopic nephrectomy via a retroperitoneal approach, the ureteral catheter and distal ureter were ligated extracorporeally. The catheter was pulled to invaginate the ureter so it could then be pulled through the external urethral orifice. DISCUSSION This technique of extracorporeal ligation ensures more a secure ligation of the ureter and ureteral catheter. This modified stripping technique does not require lower ureter management with laparotomy, and it is also useful in shortening the operative time. This method is effective for relatively early stage renal pelvic cancer.
Collapse
Affiliation(s)
- K Nakamura
- Department of Urology, Aichi Medical University School of Medicine, Nagakute, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Kobayashi I, Terazima M, Kimura Y. Study of the excited-state proton-transfer reaction of 5-cyano-2-naphthol in sub- and supercritical water. J Phys Chem B 2012; 116:1043-52. [PMID: 22201510 DOI: 10.1021/jp2097422] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The excited-state proton-transfer (ESPT) reaction of 5-cyano-2-naphthol (5CN2) has been investigated in sub- and supercritical water using time-resolved fluorescence measurements. Under ambient conditions, a very fast decay of the fluorescence from the excited state of normal 5CN2 (ROH*) and a simultaneous increase of the fluorescence from the excited state of the anion species (RO(-)*) were observed, as reported previously. The very high ESPT rate was evaluated as 0.12 ps(-1). With increasing temperature at a constant pressure of 39.0 MPa, the proton transfer became slow. At 615 K and 39.0 MPa, another fluorescence from a new unknown chemical species appeared, which was assigned to the contact ion pair (CIP) of RO(-)* and the hydronium ion. With decreasing pressure at 664 K, the fluorescence from RO(-)* disappeared, and the fluorescence from ROH* and CIP was observed. At the very low density of supercritical water, only the fluorescence decay of ROH* was detected. The reaction dynamics was analyzed with the help of singular value decomposition and spectral decomposition using model functions. The ESPT rate was correlated with the solvent dielectric constant and/or the hydrogen-bonding ability.
Collapse
Affiliation(s)
- I Kobayashi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | | | | |
Collapse
|
45
|
Manjula S, Kobayashi I, Subramanian R. Characterization of phospholipid reverse micelles in nonaqueous systems in relation to their rejection during membrane processing. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.01.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
46
|
Yamazaki S, Abe M, Nagayama S, Shibata K, Susukida M, Fukada T, Kinka M, Kobayashi I, Inushima T, Suzuki K. Fabrication of the Large-Area Integrated a-Si Solar Cells. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-70-487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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
ABSTRACTPIN-structure small-area solar cells using a-Si have been frequently reported on, but only a few reports are available on the study of solar cells using a large-area (10-cm square) substrate, all with a resultant conversion efficiency of above 9.0 %[1,2]. Our study has been concentrated on solar cells using a batch of ten 10-cm square substrates with an average conversion efficiency of 9.5 % or more.As a result, without an anti-reflection coating on the surface of the glass substrate, the following values have been obtained: average conversion efficiency (EFF)=9.63 % (standard deviation of 0.195 %) -Open-circuit voltage (Voc)=12.668 V (standard deviation of 0.215 V) -Short-circuit current (Isc)=78.467 mA (standard deviation of 1.619 mA) -Fill factor (FF)=0.6672 (standard deviation of 0.009)The process, equipment and methods for measurements through which these results were obtained are described below.
Collapse
|
47
|
Kobayashi I, Ishimura E, Kato Y, Okuno S, Yamamoto T, Yamakawa T, Mori K, Inaba M, Nishizawa Y. Geriatric Nutritional Risk Index, a simplified nutritional screening index, is a significant predictor of mortality in chronic dialysis patients. Nephrol Dial Transplant 2010; 25:3361-3365. [DOI: 10.1093/ndt/gfq211] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
48
|
Shima H, Ishimura E, Naganuma T, Yamazaki T, Kobayashi I, Shidara K, Mori K, Takemoto Y, Shoji T, Inaba M, Okamura M, Nakatani T, Nishizawa Y. Cerebral microbleeds in predialysis patients with chronic kidney disease. Nephrol Dial Transplant 2010; 25:1554-1559. [DOI: 10.1093/ndt/gfp694] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
49
|
Maruo M, Nagaoka K, Kobayashi I, Kozawa K, Obata H. Reexamination of Optimum pH Condition for the Determination of Dissolved Iron(II) in Aquatic Environments Using Colorimetric Reagents. BUNSEKI KAGAKU 2010. [DOI: 10.2116/bunsekikagaku.59.1143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Masahiro Maruo
- School of Environmental Science, The University of Shiga Prefecture
| | - Kazuki Nagaoka
- School of Environmental Science, The University of Shiga Prefecture
| | - Issei Kobayashi
- School of Environmental Science, The University of Shiga Prefecture
| | - Kanako Kozawa
- School of Environmental Science, The University of Shiga Prefecture
| | - Hajime Obata
- Atmosphere and Ocean Research Institute, The University of Tokyo
| |
Collapse
|
50
|
Sato N, Shimizu H, Shimomura Y, Uehara Y, Takahashi M, Kobayashi I. Reduced ability of neutrophils to produce active oxygen species in streptozotocin-induced diabetic rats. Exp Clin Endocrinol 2009; 99:31-3. [PMID: 1385786 DOI: 10.1055/s-0029-1211128] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We investigated a possible alteration in the ability of neutrophils to produce active oxygen species in streptozotocin (STZ)-induced diabetic rats. The production of superoxide of the neutrophils was assessed by luminol-dependent chemiluminescence (LDCL) after the stimulation by opsonized zymosan. Four days after STZ (60 mg/kg, ip) injection, blood glucose level increased by 399 +/- 9 mg/dl and the LDCL activity was significantly reduced in diabetic rats (control group: 5.12 +/- 1.53 KC/min2/10(6) cells, STZ group: 1.10 +/- 0.07 KC/min2/10(6) cells, p less than 0.01). At Day 17, blood glucose level was maintained high (598 +/- 8 mg/dl) and the LDCL activity (1.01 +/- 0.39 KC/min2/10(6) cells) was almost at the same level as that of diabetic rats at Day 4. Subcutaneous injection of insulin for 10 consecutive days increased the LDCL activity of diabetic rats in a dose-dependent manner (vehicle: 0.82 +/- 0.27 KC/min2/10(6) cells, 0.04 U/day: 1.61 +/- 0.09 KC/min2/10(6) cells, 0.40 U/day: 1.99 +/- 0.47 KC/min2/10(6) cells, 4.00 U/day: 3.33 +/- 0.43 KC/min2/10(6) cells). The data obtained herein indicate that an increased susceptibility to bacterial infection in diabetic rats results from impaired neutrophil function to produce active oxygen species.
Collapse
Affiliation(s)
- N Sato
- First Department of Internal Medicine, Gunma University School of Medicine, Maebashi, Japan
| | | | | | | | | | | |
Collapse
|