1
|
Hirata T. Olfactory information processing viewed through mitral and tufted cell-specific channels. Front Neural Circuits 2024; 18:1382626. [PMID: 38523698 PMCID: PMC10957668 DOI: 10.3389/fncir.2024.1382626] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 02/29/2024] [Indexed: 03/26/2024] Open
Abstract
Parallel processing is a fundamental strategy of sensory coding. Through this processing, unique and distinct features of sensations are computed and projected to the central targets. This review proposes that mitral and tufted cells, which are the second-order projection neurons in the olfactory bulb, contribute to parallel processing within the olfactory system. Based on anatomical and functional evidence, I discuss potential features that could be conveyed through the unique channel formed by these neurons.
Collapse
Affiliation(s)
- Tatsumi Hirata
- Brain Function Laboratory, National Institute of Genetics, SOKENDAI, Mishima, Japan
| |
Collapse
|
2
|
Luo Y, Chao Y, Owusu-Mensah RNA, Zhang J, Hirata T, Sugihara I. Neurogenic timing of the inferior olive subdivisions is related to the olivocerebellar projection topography. Sci Rep 2023; 13:7114. [PMID: 37130860 PMCID: PMC10154309 DOI: 10.1038/s41598-023-33497-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 04/13/2023] [Indexed: 05/04/2023] Open
Abstract
The olivocerebellar projection is organized into an intricate topographical connection from the inferior olive (IO) subdivisions to the longitudinally-striped compartments of cerebellar Purkinje Cells (PCs), to play an essential role in cerebellar coordination and learning. However, the central mechanisms for forming topography need to be clarified. IO neurons and PCs are generated during overlapping periods of a few days in embryonic development. Therefore, we examined whether their neurogenic timing is specifically involved in the olivocerebellar topographic projection relationship. First, we mapped neurogenic timing in the entire IO by using the neurogenic-tagging system of neurog2-CreER (G2A) mice and specific labeling of IO neurons with FoxP2. IO subdivisions were classified into three groups depending on their neurogenic timing range. Then, we examined the relationships in the neurogenic-timing gradient between IO neurons and PCs by labeling topographic olivocerebellar projection patterns and PC neurogenic timing. Early, intermediate, and late groups of IO subdivisions projected to late, intermediate, and early groups of the cortical compartments, respectively, except for a few particular areas. The results indicated that the olivocerebellar topographic relationship is essentially arranged according to the reverse neurogenic-timing gradients of the origin and target.
Collapse
Affiliation(s)
- Yuanjun Luo
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Yuhan Chao
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Richard Nana Abankwah Owusu-Mensah
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Jingyun Zhang
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Tatsumi Hirata
- Brain Function Lab, National Institute of Genetics, 1111 Yata, Mishima-shi, Shizuoka-ken, 411-8540, Japan
| | - Izumi Sugihara
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
- Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
| |
Collapse
|
3
|
Tayag JCS, Ishii T, Kokuba S, Hirata T, Shiohira H, Nakamura K. Effects of 5-fluorouracil Co-administration on Blood Pressure in Patients Maintained on Antihypertensives: a Retrospective Case Series. Pharmazie 2023; 78:67-75. [PMID: 37189272 DOI: 10.1691/ph.2023.2579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
This study aimed to investigate the possible drug-drug interactions (DDIs) of 5-FU with antihypertensives metabolised by CYP3A4 and 2C9, using blood pressure (BP) as a pharmacodynamic (PD) parameter. Patients who received 5-FU in combination with antihypertensives metabolised by CYP3A4 or 2C9, specifically, a) amlodipine, nifedipine, or amlodipine + nifedipine, b) candesartan or valsartan, or c) amlodipine + candesartan, amlodipine + losartan, or nifedipine + valsartan, (Group A, n = 20) were identified. Patients who received 5-FU with WF and antihypertensives, specifically, a) amlodipine or b) amlodipine + telmisartan, amlodipine + candesartan, or amlodipine + valsartan, (Group B, n = 5) or 5-FU alone (Group C, n = 25) were also identified and analysed as a comparator and control group, respectively. Regarding the peak BP levels during chemotherapy, there was a significant increase in both SBP (P < 0.0002 and 0.0013) and DBP (P = 0.0243 and 0.0032) in Groups A and C, respectively (Tukey-Kramer test). In contrast, although SBP also increased in Group B during chemotherapy, the change was not statistically significant and there was a decrease in DBP. The significant increase in SBP can be attributed to chemotherapy-induced hypertension by 5-FU or other drugs in the chemotherapeutic regimens. However, when comparing the lowest BP levels during chemotherapy, there was a decrease in SBP and DBP in all groups from the baseline values. The median time to peak and lowest BP was at least 2 weeks and 3 weeks, respectively, for all groups, suggesting that a BP lowering effect was observed following the offset of the initial chemotherapy-induced hypertension. At least 1 month after 5-FU chemotherapy, the SBP and DBP returned to baseline values in all groups. Since Group B also showed a significant increase in PT-INR, possibly demonstrating 5-FU inhibition of CYP activity and, consequently, of WF metabolism, it is likely that 5-FU also inhibited the metabolism of the antihypertensive drugs. The findings suggest possible DDIs between 5-FU and antihypertensives metabolised by CYP3A4.
Collapse
Affiliation(s)
- J C S Tayag
- Department of Pharmacotherapeutics, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - T Ishii
- Department of Pharmacy, University of the Ryukyus Hospital, Okinawa, Japan
| | - S Kokuba
- Department of Pharmacy, University of the Ryukyus Hospital, Okinawa, Japan
| | - T Hirata
- Health Information Management Center, University of the Ryukyus Hospital, Okinawa, Japan
| | - H Shiohira
- Department of Pharmacy, University of the Ryukyus Hospital, Okinawa, Japan
| | - K Nakamura
- Department of Pharmacotherapeutics, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan; Department of Pharmacy, University of the Ryukyus Hospital, Okinawa, Japan;,
| |
Collapse
|
4
|
Banerjee P, Kubo F, Nakaoka H, Ajima R, Sato T, Hirata T, Iwasato T. Spontaneous activity in whisker-innervating region of neonatal mouse trigeminal ganglion. Sci Rep 2022; 12:16311. [PMID: 36175429 PMCID: PMC9522796 DOI: 10.1038/s41598-022-20068-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
Spontaneous activity during the early postnatal period is thought to be crucial for the establishment of mature neural circuits. It remains unclear if the peripheral structure of the developing somatosensory system exhibits spontaneous activity, similar to that observed in the retina and cochlea of developing mammals. By establishing an ex vivo calcium imaging system, here we found that neurons in the whisker-innervating region of the trigeminal ganglion (TG) of neonatal mice generate spontaneous activity. A small percentage of neurons showed some obvious correlated activity, and these neurons were mostly located close to one another. TG spontaneous activity was majorly exhibited by medium-to-large diameter neurons, a characteristic of mechanosensory neurons, and was blocked by chelation of extracellular calcium. Moreover, this activity was diminished by the adult stage. Spontaneous activity in the TG during the first postnatal week could be a source of spontaneous activity observed in the neonatal mouse barrel cortex.
Collapse
Affiliation(s)
- Piu Banerjee
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics (NIG), Mishima, Japan.,Department of Genetics, SOKENDAI, Mishima, Japan
| | - Fumi Kubo
- Department of Genetics, SOKENDAI, Mishima, Japan.,Laboratory of Systems Neuroscience, NIG, Mishima, Japan
| | - Hirofumi Nakaoka
- Department of Cancer Genome Research, Sasaki Institute, Tokyo, Japan
| | - Rieko Ajima
- Department of Genetics, SOKENDAI, Mishima, Japan.,Laboratory of Mammalian Development, NIG, Mishima, Japan
| | - Takuya Sato
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics (NIG), Mishima, Japan
| | - Tatsumi Hirata
- Department of Genetics, SOKENDAI, Mishima, Japan.,Laboratory of Brain Function, NIG, Mishima, Japan
| | - Takuji Iwasato
- Laboratory of Mammalian Neural Circuits, National Institute of Genetics (NIG), Mishima, Japan. .,Department of Genetics, SOKENDAI, Mishima, Japan.
| |
Collapse
|
5
|
Kanno I, Hasegawa K, Nakamura T, Kogure M, Itabashi F, Narita A, Tsuchiya N, Hirata T, Nakaya N, Sugawara J, Kuriyama S, Tsuji I, Kure S, Hozawa A. Relationship between the housing coldness/warmth evaluation by CASBEE Housing Health Checklist and psychological distress based on TMM Community-Based Cohort Study: a cross-sectional analysis. Public Health 2022; 208:98-104. [PMID: 35738131 DOI: 10.1016/j.puhe.2022.05.003] [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] [Received: 08/18/2021] [Revised: 03/11/2022] [Accepted: 05/08/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Previous studies have reported the relationship between housing environment and health, although due to cost and effort, it was difficult to conduct housing condition surveys on a large scale. The CASBEE Housing Health Checklist (the Checklist) made it possible to easily evaluate the housing condition from the resident's perspective. This study examined the relationship between housing coldness/warmth evaluation using the Checklist and psychological distress in a large-scale general Japanese population. STUDY DESIGN A cross-sectional study. METHODS We analysed data from 29,380 people aged ≥20 years who lived in Miyagi Prefecture, Japan. As an assessment of housing coldness/warmth, we used the Checklist. We classified participants' total scores on the Checklist related to coldness/warmth into quartiles. The Kessler 6 scale was used as an indicator of psychological distress. Multivariable logistic regression models were used to estimate the adjusted odds ratio (OR) and 95% confidence intervals (CIs). Adjusted OR and P-values for linear trends were calculated using the quartiles of the Checklists' score. RESULTS Among participants in Q1 (i.e., poorer subjective house condition), the percentage of people with psychological distress was high. Compared to the highest quartile, Q1 showed poorer evaluation of housing coldness/warmth, and higher OR for psychological distress. The OR (95% CI) of psychological distress for Q3, Q2, and Q1 compared with Q4 were 1.93 (1.74-2.14), 2.82 (2.55-3.12), and 5.78 (5.25-6.35), respectively. CONCLUSIONS Housing coldness/warmth evaluation was significantly related to psychological distress. This finding suggests that maintaining a comfortable thermal environment at home could be important for residents' mental health.
Collapse
Affiliation(s)
- I Kanno
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - K Hasegawa
- Akita Prefectural University, Akita, Japan
| | - T Nakamura
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - M Kogure
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - F Itabashi
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - A Narita
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - N Tsuchiya
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Yamato Home Medical Care Clinic Kurihara, Kurihara, Japan
| | - T Hirata
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Institute for Clinical and Translational Science, Nara Medical University, Kashihara, Nara, Japan
| | - N Nakaya
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - J Sugawara
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan; Tohoku University Hospital, Tohoku University, Sendai, Japan
| | - S Kuriyama
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan; International Research Institute of Disaster Science, Tohoku University, Sendai, Japan
| | - I Tsuji
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - S Kure
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan; Tohoku University Hospital, Tohoku University, Sendai, Japan
| | - A Hozawa
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan; Graduate School of Medicine, Tohoku University, Sendai, Japan.
| |
Collapse
|
6
|
Hirata T, Tohsato Y, Itoga H, Shioi G, Kiyonari H, Oka S, Fujimori T, Onami S. NeuroGT: A brain atlas of neurogenic tagging CreER drivers for birthdate-based classification and manipulation of mouse neurons. Cell Rep Methods 2021; 1:100012. [PMID: 35474959 PMCID: PMC9017123 DOI: 10.1016/j.crmeth.2021.100012] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/02/2021] [Accepted: 04/23/2021] [Indexed: 11/30/2022]
Abstract
Neuronal birthdate is one of the major determinants of neuronal phenotypes. However, most birthdating methods are retrospective in nature, allowing very little experimental access to the classified neuronal subsets. Here, we introduce four neurogenic tagging mouse lines, which can assign CreER-loxP recombination to neuron subsets that share the same differentiation timing in living animals and enable various experimental manipulations of the classified subsets. We constructed a brain atlas of the neurogenic tagging mouse lines (NeuroGT), which includes holistic image data of the loxP-recombined neurons and their processes across the entire brain that were tagged on each single day during the neurodevelopmental period. This image database, which is open to the public, offers investigators the opportunity to find specific neurogenic tagging driver lines and the stages of tagging appropriate for their own research purposes.
Collapse
Affiliation(s)
- Tatsumi Hirata
- Brain Function Laboratory, National Institute of Genetics, 1111 Yata, Mishima 411-8540, Japan
- The Graduate University for Advanced Studies, SOKENDAI, Hayama, Japan
| | - Yukako Tohsato
- Computational Biology Laboratory, Faculty of Information Science and Engineering, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577, Japan
- Laboratory for Developmental Dynamics, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Hiroya Itoga
- Laboratory for Developmental Dynamics, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Go Shioi
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Sanae Oka
- Division of Embryology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Toshihiko Fujimori
- The Graduate University for Advanced Studies, SOKENDAI, Hayama, Japan
- Division of Embryology, National Institute for Basic Biology, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Shuichi Onami
- Laboratory for Developmental Dynamics, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
- Life Science Data Sharing Unit, RIKEN Information R&D and Strategy Headquarters, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| |
Collapse
|
7
|
Yamamoto N, Wada-Hiraike O, Hirano M, Hirata T, Harada M, Hirota Y, Koga K, Fujii T, Osuga Y. Ovarian reserve may influence the outcome of bone mineral density in patients with long-term use of dienogest. SAGE Open Med 2021; 9:20503121211005992. [PMID: 35154758 PMCID: PMC8826102 DOI: 10.1177/20503121211005992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 11/17/2022] Open
Abstract
Objective: Long-term administration of dienogest, which is known to have effect on bone mineral density, is frequently done in patients with endometriosis and adenomyosis, but a few studies focused on the bone mineral density changes after finishing the long-term therapy. This study aimed to reveal the factors that adversely affect lumbar bone mineral density. Method: Fifty-seven premenopausal women who visited our hospital were diagnosed as either endometriosis or adenomyosis, and they were treated by dienogest for more than 115 weeks (26.5 months). Based on a previous report, bone mineral density changes less than 2% was categorized as the osteopenic group ( n = 30), and the others were assigned to the unchanged group ( n = 27). Bone mineral density was measured at the lumbar spine using dual-energy X-ray absorptiometry. A representative ovarian reserve marker, endogenous estradiol levels, and follicle-stimulating hormone levels were measured over time and were compared between the osteopenic and unchanged groups. Result: Duration of dienogest intake was 59.5 months (osteopenic group) versus 57.5 months (unchanged group). These patients experienced ovarian surgeries in a similar frequency, but the ovarian reserve in osteopenic group was impaired as suggested by the decline of endogenous estradiol level during intake of dienogest compared to that of unchanged group ( p = 0.0146). Endogenous follicle-stimulating hormone level between osteopenic group and unchanged group did not reach statistically significant difference, although the osteopenic group showed relatively higher level. Conclusion: This study might suggest that decreased ovarian reserve as judged by endogenous estradiol level is a factor that negatively affect bone mineral density, and measurement of endogenous estradiol level during intake of dienogest could have a predictive meaning of future decreased bone mineral density level.
Collapse
Affiliation(s)
- N Yamamoto
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - O Wada-Hiraike
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - M Hirano
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - T Hirata
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - M Harada
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - Y Hirota
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - K Koga
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - T Fujii
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| | - Y Osuga
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
8
|
Hatanaka Y, Hirata T. How Do Cortical Excitatory Neurons Terminate Their Migration at the Right Place? Critical Roles of Environmental Elements. Front Cell Dev Biol 2020; 8:596708. [PMID: 33195277 PMCID: PMC7644909 DOI: 10.3389/fcell.2020.596708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/05/2020] [Indexed: 11/13/2022] Open
Abstract
Interactions between neurons and their environment are crucial for proper termination of neuronal migration during brain development. In this review, we first introduce the migration behavior of cortical excitatory neurons from neurogenesis to migration termination, focusing on morphological and behavioral changes. We then describe possible requirements for environmental elements, including extracellular matrix proteins and Cajal–Retzius cells in the marginal zone, radial glial cells, and neighboring neurons, to ensure proper migration termination of these neurons at their final destinations. The requirements appear to be highly linked to sequential and/or concurrent changes in adhesiveness of migrating neurons and their surroundings, which allow the neurons to reach their final positions, detach from substrates, and establish stable laminar structures.
Collapse
Affiliation(s)
- Yumiko Hatanaka
- Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Tatsumi Hirata
- Brain Function Laboratory, National Institute of Genetics, Mishima, Japan.,Department of Genetics, Graduate School of Life Sciences, Graduate University for Advanced Studies (SOKENDAI), Mishima, Japan
| |
Collapse
|
9
|
Hayashino K, Hirata T, Nakano K, Tashiro H. 349P Proteinuria in patients treated with ramcirumab increases the risk of renal dysfunction. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
10
|
Zhang J, Tran-Anh K, Hirata T, Sugihara I. Striped Distribution Pattern of Purkinje Cells of Different Birthdates in the Mouse Cerebellar Cortex Studied with the Neurog2-CreER Transgenic Line. Neuroscience 2020; 462:122-140. [PMID: 32717297 DOI: 10.1016/j.neuroscience.2020.07.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 02/24/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 11/17/2022]
Abstract
Heterogeneity of Purkinje cells (PCs) that are arranged into discrete longitudinally-striped compartments in the cerebellar cortex is related to the timing of PC generation. To understand the cerebellar compartmental organization, we mapped the PC birthdate (or differentiation timing) in the entire cerebellar cortex. We used the birthdate-tagging system of Neurog2-CreER (G2A) mice hybridized with the AldocV strain which visualizes the zebrin (aldolase C) longitudinal striped pattern. The birthdate-specific distribution pattern of PCs was arranged into longitudinally-oriented stripes consistently throughout almost all lobules except for the nodulus, paraflocculus, and flocculus, in which distinct stripes were observed. Boundaries of the birthdate stripes coincided with the boundary of zebrin stripes or located in the middle of a zebrin stripe. Each birthdate stripe contained PCs born in a particular period between embryonic day (E) 10.0 and E 13.5. In the vermis, PCs were chronologically distributed from lateral to medial stripes. In the paravermis, PCs of early birthdates were distributed in the long lateral zebrin-positive stripe (stripe 4+//5+) and the medially neighboring narrow zebrin-negative substripe (3d-//e2-), while PCs of late birthdates were distributed in the rest of all paravermal areas. In the hemisphere, PCs of early and late birthdates were intermingled in the majority of areas. The results indicate that the birthdate of a PC is a partial determinant for the zebrin compartment in which it is located. However, the correlation between the PC birthdate and the zebrin compartmentalization is complex and distinct among the vermis, paravermis, hemisphere, nodulus, and flocculus.
Collapse
Affiliation(s)
- Jingyun Zhang
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Khoa Tran-Anh
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Tatsumi Hirata
- Brain Function Lab, National Institute of Genetics, 1111 Yata, Mishima-shi, Shizuoka-ken 411-8540, Japan
| | - Izumi Sugihara
- Department of Systems Neurophysiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan; Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan.
| |
Collapse
|
11
|
Thumkeo D, Katsura Y, Nishimura Y, Kanchanawong P, Tohyama K, Ishizaki T, Kitajima S, Takahashi C, Hirata T, Watanabe N, Krummel MF, Narumiya S. mDia1/3-dependent actin polymerization spatiotemporally controls LAT phosphorylation by Zap70 at the immune synapse. Sci Adv 2020; 6:eaay2432. [PMID: 31911947 PMCID: PMC6938706 DOI: 10.1126/sciadv.aay2432] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/31/2019] [Indexed: 05/06/2023]
Abstract
The mechanism by which the cytosolic protein Zap70 physically interacts with and phosphorylates its substrate, the transmembrane protein LAT, upon T cell receptor (TCR) stimulation remains largely obscure. In this study, we found that the pharmacological inhibition of formins, a major class of actin nucleators, suppressed LAT phosphorylation by Zap70, despite TCR stimulation-dependent phosphorylation of Zap70 remaining intact. High-resolution imaging and three-dimensional image reconstruction revealed that localization of phosphorylated Zap70 to the immune synapse (IS) and subsequent LAT phosphorylation are critically dependent on formin-mediated actin polymerization. Using knockout mice, we identify mDia1 and mDia3, which are highly expressed in T cells and which localize to the IS upon TCR activation, as the critical formins mediating this process. Our findings therefore describe previously unsuspected roles for mDia1 and mDia3 in the spatiotemporal control of Zap70-dependent LAT phosphorylation at the IS through regulation of filamentous actin, and underscore their physiological importance in TCR signaling.
Collapse
Affiliation(s)
- D. Thumkeo
- Department of Drug Discovery Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
- Corresponding author. (D.T.); (S.N.)
| | - Y. Katsura
- Department of Drug Discovery Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto, Japan
| | - Y. Nishimura
- Mechanobiology Institute, National University of Singapore, Singapore, Republic of Singapore
| | - P. Kanchanawong
- Mechanobiology Institute, National University of Singapore, Singapore, Republic of Singapore
- Department of Biomedical Engineering, National University of Singapore, Singapore, Republic of Singapore
| | - K. Tohyama
- Department of Drug Discovery Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto, Japan
| | - T. Ishizaki
- Department of Pharmacology, Oita University Graduate School of Medicine, Oita, Japan
| | - S. Kitajima
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Ishikawa, Japan
| | - C. Takahashi
- Division of Oncology and Molecular Biology, Cancer Research Institute, Kanazawa University, Ishikawa, Japan
| | - T. Hirata
- Department of Fundamental Biosciences, Shiga University of Medical Science, Shiga, Japan
| | - N. Watanabe
- Department of Pharmacology, Kyoto University Faculty of Medicine, Kyoto, Japan
- Laboratory of Single-Molecule Cell Biology, Kyoto University Graduate School of Biostudies, Kyoto, Japan
| | - M. F. Krummel
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - S. Narumiya
- Department of Drug Discovery Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Corresponding author. (D.T.); (S.N.)
| |
Collapse
|
12
|
Hirata T, Shioi G, Abe T, Kiyonari H, Kato S, Kobayashi K, Mori K, Kawasaki T. A Novel Birthdate-Labeling Method Reveals Segregated Parallel Projections of Mitral and External Tufted Cells in the Main Olfactory System. eNeuro 2019; 6:ENEURO.0234-19.2019. [PMID: 31672846 PMCID: PMC6868177 DOI: 10.1523/eneuro.0234-19.2019] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 10/16/2019] [Accepted: 10/19/2019] [Indexed: 01/09/2023] Open
Abstract
A fundamental strategy in sensory coding is parallel processing, whereby unique, distinct features of sensation are computed and projected to the central target in the form of submodal maps. It remains unclear, however, whether such parallel processing strategy is employed in the main olfactory system, which codes the complex hierarchical odor and behavioral scenes. A potential scheme is that distinct subsets of projection neurons in the olfactory bulb (OB) form parallel projections to the targets. Taking advantage of the observation that the distinct projection neurons develop at different times, we developed a Cre-loxP-based method that allows for birthdate-specific labeling of cell bodies and their axon projections in mice. This birthdate tag analysis revealed that the mitral cells (MCs) born in an early developmental stage and the external tufted cells (TCs) born a few days later form segregated parallel projections. Specifically, the latter subset converges the axons onto only two small specific targets, one of which, located at the anterolateral edge of the olfactory tubercle (OT), excludes widespread MC projections. This target is made up of neurons that express dopamine D1 but not D2 receptor and corresponds to the most anterolateral isolation of the CAP compartments (aiCAP) that were defined previously. This finding of segregated projections suggests that olfactory sensing does indeed involve parallel processing of functionally distinct submodalities. Importantly, the birthdate tag method used here may pave the way for deciphering the functional meaning of these individual projection pathways in the future.
Collapse
Affiliation(s)
- Tatsumi Hirata
- Brain Function Laboratory, National Institute of Genetics
- Graduate University for Advanced Studies, SOKENDAI, Mishima 411-8540, Japan
| | - Go Shioi
- Laboratory for Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Takaya Abe
- Laboratory for Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
- Laboratory for Animal Resource Development, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Hiroshi Kiyonari
- Laboratory for Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
- Laboratory for Animal Resource Development, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Shigeki Kato
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Kazuto Kobayashi
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Kensaku Mori
- Department of Physiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Takahiko Kawasaki
- Brain Function Laboratory, National Institute of Genetics
- Graduate University for Advanced Studies, SOKENDAI, Mishima 411-8540, Japan
| |
Collapse
|
13
|
Nishikawa T, Miyamatsu N, Higashiyama A, Nishida Y, Kubota Y, Hirata T, Sugiyama D, Kuwabara K, Miyamoto Y, Okamura T. Age-related and seasonal change in serum osmolarity and water intake in a healthy population. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz186.445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and aim
Few studies have clarified the seasonal and age-related change of serum osmolarity and water intake, which is thought to be associated with heat stroke and ischemic stroke. We investigated the association between them in a healthy population.
Methods
We conducted a cross-sectional study using database from Kobe Orthopedic and Biomedical Epidemiologic (KOBE) Study. Among 1138 healthy Japanese participants in the baseline survey, 1010 (women 704 and men 306) participants were eligible for the present study. Daily non-alcohol drink (NAD) intake was estimated according to food frequency questionnaire. Alcohol beverage and water in the meal or soup were excluded from the counting. Serum osmolarity (Osm/L) was calculated by Worthley’s formula: 2 (serum sodium (mEq/L)) + (blood urea nitrogen (mg/dL))/2.8 + (glucose (mg/dL))/18. The seasons the surveys were conducted were categorized into 4 groups, March-May (Spring), June-August (Summer), September-November (Autumn), and December-February (Winter). The association between serum osmolarity and daily NAD intake was analyzed using linear regression models.
Results
The seasonal change was observed in the serum osmolarity and daily NAD intake; serum osmolarity increased in spring and summer and daily NAD intake increased in summer. The serum osmolarity increased by aging in any seasons, while daily water intake didn’t. There was no significant association observed between serum osmolarity and the daily NAD intake, even after adjusting for sex, age, and season.
Conclusions
Serum osmolarity showed seasonal and age-related changes, but the serum osmolarity in subjects who had the daily habit of high NAD intake was not necessarily low.
Key messages
Serum osmolarity increased by aging and in spring and summer. Serum osmolarity was not associated with non-alcohol drink intake.
Collapse
Affiliation(s)
- T Nishikawa
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Faculty of Health Science, Kyoto Koka Women’s University, Kyoto, Japan
| | - N Miyamatsu
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Clinical Nursing, Shiga University of Medical Science, Otsu, Japan
| | - A Higashiyama
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Preventive Medicine and Epidemiologic Informat, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Y Nishida
- Foundation for Biomedical Research and Innovation, Kobe, Japan
| | - Y Kubota
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Environmental and Preventive Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - T Hirata
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Preventive Medicine and Epidemiology, Tohoku M, Tohoku University, Sendai, Japan
| | - D Sugiyama
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Faculty of Nursing And Medical Care, Keio University, Tokyo, Japan
| | - K Kuwabara
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Preventive Medicine and Public Health, Keio University, Tokyo, Japan
| | - Y Miyamoto
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Preventive Medicine and Epidemiologic Informat, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - T Okamura
- Foundation for Biomedical Research and Innovation, Kobe, Japan
- Department of Preventive Medicine and Public Health, Keio University, Tokyo, Japan
| |
Collapse
|
14
|
Hatanaka Y, Kawasaki T, Abe T, Shioi G, Kohno T, Hattori M, Sakakibara A, Kawaguchi Y, Hirata T. Semaphorin 6A-Plexin A2/A4 Interactions with Radial Glia Regulate Migration Termination of Superficial Layer Cortical Neurons. iScience 2019; 21:359-374. [PMID: 31698249 PMCID: PMC6889767 DOI: 10.1016/j.isci.2019.10.034] [Citation(s) in RCA: 13] [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: 11/12/2018] [Revised: 08/30/2019] [Accepted: 10/16/2019] [Indexed: 12/01/2022] Open
Abstract
Precise regulation of neuronal migration termination is crucial for the establishment of brain cytoarchitectures. However, little is known about how neurons terminate migration. Here we focused on interactions between migrating cortical neurons and their substrates, radial glial (RG) cells, and analyzed the role of Plexin A2 and A4 (PlxnA2/A4) receptors and their repulsive ligand, Semaphorin 6A (Sema6A), for this process. In both PlxnA2/A4 double-knockout and Sema6A mutant mice, the outermost cortical plate neurons ectopically invade layer 1 at a stage when they should reach their destinations. PlxnA2/A4 proteins are abundantly expressed on their leading processes, whereas Sema6A mRNA is enriched in RG cell somata. Cell-targeted gene expression and conditional knockouts indicate critical roles for these molecules. We hypothesize that the timely appearance of repulsive signaling mediated by Sema6A–PlxnA2/A4 weakens migrating neuron–RG cell interactions, leading to migration termination. Loss of PlxnA2/A4 results in superficial layer neurons invading layer 1 PlxnA2/A4 works cell autonomously to settle these neurons properly Lack of Sema6A in radial glial cells causes similar mispositioning of these neurons Sema6A–PlxnA2/A4 signaling determines settling position of superficial layer neurons
Collapse
Affiliation(s)
- Yumiko Hatanaka
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan; Division of Cerebral Circuitry, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan; College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan.
| | - Takahiko Kawasaki
- Brain Function Laboratory, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan
| | - Takaya Abe
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima Minami-machi, Chuou-ku, Kobe, Hyogo 650-0047, Japan
| | - Go Shioi
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojima Minami-machi, Chuou-ku, Kobe, Hyogo 650-0047, Japan
| | - Takao Kohno
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
| | - Mitsuharu Hattori
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
| | - Akira Sakakibara
- College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| | - Yasuo Kawaguchi
- Division of Cerebral Circuitry, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Tatsumi Hirata
- Brain Function Laboratory, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan
| |
Collapse
|
15
|
Emori H, Kubo T, Tanigaki T, Kawase Y, Shiono Y, Shimamura K, Sobue Y, Matsuo Y, Hirata T, Kitabata H, Ota H, Ino Y, Okubo M, Matsuo H, Akasaka T. P1252Diagnostic performance of quantitative flow ratio from coronary angiography versus fractional flow reserve from computed tomography. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
QFR and FFRCT are recently developed, less-invasive techniques for functional assessment of coronary artery disease.
Objectives
We compared the diagnostic performance between fractional flow reserve derived from computed tomography (FFRCT) and quantitative flow ratio (QFR) derived from coronary angiography, using FFR as the standard reference.
Methods
We measured FFRCT, QFR and FFR in 152 patients (233 vessels) with stable coronary artery disease.
Results
QFR was highly correlated with FFR (r=0.78, p<0.001), while FFRCT was moderately correlated with FFR (r=0.63, p<0.001). Both QFR and FFRCT showed good agreements with FFR, presenting small values of mean difference and root-mean-squared deviation (FFR -QFR: 0.02±0.09 and FFR -FFRCT: 0.03±0.11). The AUC of QFR was significantly greater than that of 3D-QCA-derived %DS (0.93 vs. 0.78; difference: 0.15; 95% CI: 0.09 to 0.20; p<0.001). The AUC of FFRCTwas significantly greater than that of CCTA-derived %DS (0.82 vs. 0.70; difference: 0.12; 95% CI: 0.05 to 0.19; p<0.001). The AUC of QFR was significantly greater than that of FFRCT (0.93 vs. 0.82; difference: 0.11; 95% CI: 0.05 to 0.16; p<0.001). The sensitivity, specificity, positive predictive value, and negative predictive valueof QFR ≤0.80 for predicting FFR ≤0.80 were 90%, 82%, 81%, and 90%, respectively. Those of FFRCT ≤0.80 for predicting FFR ≤0.80 were 82%, 70%, 70%, and 82%, respectively. The diagnostic accuracy of QFR ≤0.80 for predicting FFR ≤0.80 was 85% [95% confidence interval: 81% to 89%], while that of FFRCT≤0.80 for predicting FFR ≤0.80was 76% [95% confidence interval: 70% to 80%].
Figure 1. Comparison of FFR ≤0.80 predictors
Conclusions
Both QFR and FFRCTpossessed the ability to accurately evaluate the functional severity of coronary stenosis.
Collapse
Affiliation(s)
- H Emori
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | - T Kubo
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | | | | | - Y Shiono
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | - K Shimamura
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | - Y Sobue
- Gifu Heart Center, Gifu, Japan
| | - Y Matsuo
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | | | - H Kitabata
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | - H Ota
- Gifu Heart Center, Gifu, Japan
| | - Y Ino
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| | - M Okubo
- Gifu Heart Center, Gifu, Japan
| | | | - T Akasaka
- Wakayama Medical University, Division of cardiovascular medicine, Wakayama, Japan
| |
Collapse
|
16
|
Ota H, Omori H, Tanigaki T, Okamoto S, Hirata T, Kikuchi J, Sobue Y, Miyake T, Kawamura I, Kawase Y, Okubo M, Kamiya H, Tsuchiya K, Matsuo H. 6108Efficacy of the PCSK9 inhibitor for lipid-rich coronary plaque reduction: a near-infrared spectroscopy analysis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Recently, some studies have highlighted proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibitors produce incremental low-density lipoprotein cholesterol (LDL-C) lowering effect. However, it is unknown whether the lipid composition of plaque changes is associated with serum LDL-C reduction due to PCSK9 inhibitors administration.
Purpose
The purpose of this study was to determine the effects of PCSK9 inhibitor (PCSK9i) on coronary plaque component in patients with a history of coronary artery disease (CAD) assessed by near-infrared spectroscopy intravascular ultrasound (NIRS-IVUS).
Methods
A total of 67 non-culprit coronary segments were identified in 34 patients. These lesions were analyzed utilizing NIRS-IVUS at baseline and follow-up coronary angiography (CAG). The subjects were divided into two groups according to lipid-lowering treatment; administration of PCSK9i group (PCSK9i: 19 segments, 9 patients) and traditional statin treatment group (Control: 48 segments, 25 patients). The change of lipid-rich plaque distribution between baseline and follow-up NIRS-IVUS was defined as the change of maximal lipid core burden index (LCBI) score for each of the 4-mm longitudinal segments (maxLCBI4mm).
Results
Mean duration from baseline to follow-up CAG was 239.4±52.4 days in the PCSK9i group and 341.0±84.1 days in the Control group (p<0.001). Despite the higher total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) in the PCSK9i group at baseline (206.6±40.9 mg/dl vs. 168.5±37.1 mg/dl, 131.5±35.4 mg/dl vs. 100.0±29.5 mg/dl; respectively, p<0.001 for both), the PCSK9i group was significantly lower TC and LDL-C at the follow-up (111.5±23.5 mg/dl vs. 157.4±27.8 mg/dl, 40.8±15.7 mg/dl vs. 86.2±19.6 mg/dl; respectively, p<0.001 for both). Furthermore, the PCSK9i group induced greater regression of maxLCBI4mm than that of Control group (99.6±156.6 vs. 27.9±118.0, p=0.046) (Figure).
Figure 1
Conclusion
Compared with traditional statin therapy, PCSK9i treatment resulted in a greater decrease in lipid component in non-culprit coronary plaques. Therefore, PCSK9i may be useful option in preventing from adverse coronary events for the patients with CAD.
Collapse
Affiliation(s)
- H Ota
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Omori
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Tanigaki
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - S Okamoto
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Hirata
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - J Kikuchi
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - Y Sobue
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Miyake
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - I Kawamura
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - Y Kawase
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - M Okubo
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Kamiya
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - K Tsuchiya
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Matsuo
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| |
Collapse
|
17
|
Hirata T, Okada Y, Nozaki M, Tashiro H, Nakano K. Impact of proteinuria on long-term renal function in patients with gastrointestinal cancer treated with ramucirumab. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
18
|
Ito F, Matsumoto T, Hirata T. Frequent nonrandom shifts in the temporal sequence of developmental landmark events during teleost evolutionary diversification. Evol Dev 2019; 21:120-134. [PMID: 30999390 DOI: 10.1111/ede.12288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 03/03/2019] [Accepted: 03/06/2019] [Indexed: 01/08/2023]
Abstract
Morphological transformations can be generated by evolutionary changes in the sequence of developmental events. In this study, we examined the evolutionary dynamics of the developmental sequence on a macroevolutionary scale in teleosts. Using the information from previous reports describing the development of 31 species, we extracted the developmental sequences of 19 landmark events involving the formation of phylogenetically conserved body parts; we then inferred ancestral developmental sequences by two different parsimony-based methods-event-pairing and continuous analysis. The phylogenetic comparisons of these sequences revealed event-dependent heterogeneity in the frequency of sequence changes. Most of the sequence changes occurred as exchanges of temporally neighboring events. These heterochronic changes in developmental sequences accumulated along evolutionary time, but the precise distribution of the changes over the teleostean phylogeny remains unclear due to technical limitations.
Collapse
Affiliation(s)
- Fumihiro Ito
- Mammalian Genetics Laboratory, Genetic Strains Research Center, National Institute of Genetics, Mishima, Shizuoka, Japan.,Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), Mishima, Shizuoka, Japan
| | - Tomotaka Matsumoto
- Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), Mishima, Shizuoka, Japan.,Division of Evolutionary Genetics, Department of Population Genetics, National Institute of Genetics, Mishima, Shizuoka, Japan
| | - Tatsumi Hirata
- Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), Mishima, Shizuoka, Japan.,Division of Brain Function, National Institute of Genetics, Mishima, Shizuoka, Japan
| |
Collapse
|
19
|
Kanayama N, Ikawa T, Wada K, Hirata T, Morimoto M, Hayashi K, Konishi K, Teshima T. EP-1142 Death from aspiration after definitive radiotherapy for hypopharyngeal or supraglottic cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31562-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
Hirata T, Tanigaki T, Kawase Y, Hirakawa A, Omori H, Okamoto S, Ota H, Sobue Y, Kikuchi J, Okubo M, Kamiya H, Kawasaki M, Suzuki T, Pijls NHJ, Matsuo H. Post-occlusional hyperemia for fractional flow reserve assessment and pull-back curve analysis. Cardiovasc Interv Ther 2019; 35:142-149. [PMID: 30788697 DOI: 10.1007/s12928-019-00579-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 02/12/2019] [Indexed: 11/25/2022]
Abstract
Balloon occlusion is a potential method for inducing hyperemia to measure post-percutaneous coronary intervention (PCI) fractional flow reserve (FFR). The objective of this study was to determine the clinical usefulness of post-occlusional hyperemia. FFRs measured using post-occlusional hyperemia caused by 30 (FFRoccl30) and 60 s (FFRoccl60) of balloon occlusion after PCI were compared in 60 lesions from 60 patients. The duration of hyperemia was also measured. There was a strong correlation between FFRoccl30 and FFRoccl60 (r = 0.969, p < 0.01). The duration of hyperemia was significantly longer with FFRoccl60 than with FFRoccl30 (68 ± 23 vs. 37 ± 15 s, p < 0.01). The time required for pullback curve analysis was around 45 s. However, in 7 (12%) cases, the duration of hyperemia with FFRoccl60 was < 45 s, which was not enough for pull-back curve analysis. To predict the duration of hyperemia with FFRoccl60 ≥ 45 s, the receiver operating characteristic curve analysis revealed a cut-off value of 25 s of hyperemia with FFRoccl30. FFRoccl30 is sufficient for diagnostic purposes. FFRoccl60 is suitable for pull-back curve analysis in select cases based on predictions made using the duration of hyperemia with FFRoccl30.
Collapse
Affiliation(s)
- T Hirata
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - T Tanigaki
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - Y Kawase
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan.
| | - A Hirakawa
- Department of Biostatistics and Bioinformatics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Omori
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - S Okamoto
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - H Ota
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - Y Sobue
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - J Kikuchi
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - M Okubo
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - H Kamiya
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - M Kawasaki
- Department of Cardiology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - T Suzuki
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| | - N H J Pijls
- Department of Cardiology, Catharina Hospital, Eindhoven, Netherlands
| | - H Matsuo
- Department of Cardiovascular Medicine, Gifu Heart Center, 4-14-4 Yabutaminami, Gifu city, 5008384, Gifu, Japan
| |
Collapse
|
21
|
Hirata T. Impact of treatment with bilastine for PD-1/PD-L1 inhibitors induced rash. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz026.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
22
|
Omori H, Witberg G, Kawase Y, Tanigaki T, Okamoto S, Hirata T, Sobue Y, Ota H, Kamiya H, Okubo M, Valzer O, Kornowski R, Matsuo H. Angiogram based fractional flow reserve in patients with dual/triple vessel coronary artery disease. Int J Cardiol 2019; 283:17-22. [PMID: 30819589 DOI: 10.1016/j.ijcard.2019.01.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 12/06/2018] [Accepted: 01/21/2019] [Indexed: 01/29/2023]
Abstract
OBJECTIVE To assess the performance of angiography derived Fractional Flow Reserve (FFRangio) in multivessel disease (MVD) patients undergoing angiography. BACKGROUND FFR is the reference standard for physiologic assessment of coronary stenosis and guidance of revascularization, especially in patients with MVD, yet it remains grossly underutilized. The non-wire based FFRangio performs well in non-MVD patients, but its accuracy in MVD is unknown. METHODS A prospective clinical study was conducted at Gifu Heart Centre, Japan. Patients underwent physiologic assessment of all relevant coronary lesions using wire-based FFR (wbFFR) and FFRangio. Primary outcome was diagnostic performance (sensitivity, specificity, accuracy) for FFRangio with wbFFR as reference. Other outcomes were the correlation between wbFFR/FFRangio, time required for wbFFR/FFRangio measurements, and the effect of wbFFR/FFRangio on the reclassification of coronary disease severity. RESULTS Fifty patients (118 lesions in total) were included. Mean age was 72 ± 9 years, 72% were male, 36% had triple vessel disease and the average SYNTAX score was 13. The mean measurement of wbFFR and FFRangio were 0.83 ± 0.12 and 0.81 ± 0.11, respectively. Accuracy, sensitivity and specificity for FFRangio were 92.3% (95% CI 79.1-98.4%), 92.4% (95% CI 84.3-97.2%) and 92.4% (95% CI 87.4-97.3%), respectively. Pearson's r between wbFFR and FFRangio was 0.83. FFRangio measurement was faster than wbFFR (9.6 ± 3.4 vs. 15.0 ± 8.9 min, p < 0.001). CONCLUSIONS In patients with MVD, FFRangio shows good correlation and excellent diagnostic performance compared to wbFFR, and measuring FFRangio is faster than wbFFR. These results highlight the potential clinical benefits of utilizing FFRangio among patients with MVD.
Collapse
Affiliation(s)
- H Omori
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - G Witberg
- Department of Cardiology, Rabin Medical Center, Petah-Tikva, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| | - Y Kawase
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - T Tanigaki
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - S Okamoto
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - T Hirata
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - Y Sobue
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - H Ota
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - H Kamiya
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - M Okubo
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - O Valzer
- Department of Cardiology, Rabin Medical Center, Petah-Tikva, Israel; CathWorks, Kfar-Saba, Israel
| | - R Kornowski
- Department of Cardiology, Rabin Medical Center, Petah-Tikva, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - H Matsuo
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| |
Collapse
|
23
|
Abstract
Neurogenesis proceeds like a continuous wave, in which each type of neurons is produced over a few days to several days. During this protracted time window, early-born and late-born neurons are sequentially produced with a considerable time lag. Even if they are identical in their genetic and molecular specifications, they could develop different characteristics under the influences of the timing of their birth. In this review, we discuss the potential influences of "timing" as a generic parameter affecting neuronal differentiation, particularly on axon guidance and connections. These ideas have rarely been tested experimentally, but may provide a new strategy by which phenotypic diversity is increased in neurons.
Collapse
Affiliation(s)
- Tatsumi Hirata
- Division of Brain Function, National Institute of Genetics, 1111 Yata, Mishima, 411-8540, Japan; SOKENDAI (Graduate University for Advanced Studies), Japan.
| | - Lena Iwai
- Division of Brain Function, National Institute of Genetics, 1111 Yata, Mishima, 411-8540, Japan
| |
Collapse
|
24
|
Ota H, Tanigaki T, Okamoto S, Omori H, Hirata T, Kikuchi J, Kawase Y, Okubo M, Kamiya H, Matsuo H. P2635Association between near-infrared spectroscopy and coronary computed tomographic angiography for lipid containing coronary plaques. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Ota
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Tanigaki
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - S Okamoto
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Omori
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Hirata
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - J Kikuchi
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - Y Kawase
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - M Okubo
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Kamiya
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Matsuo
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| |
Collapse
|
25
|
Ota H, Tanigaki T, Okamoto S, Omori H, Hirata T, Kikuchi J, Kawase Y, Okubo M, Kamiya H, Matsuo H. P750Impact of lipid plaque component reduction during percutaneous coronary intervention on cardiac troponin elevation after procedure: a near-infrared spectroscopy analysis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Ota
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Tanigaki
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - S Okamoto
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Omori
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - T Hirata
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - J Kikuchi
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - Y Kawase
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - M Okubo
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Kamiya
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| | - H Matsuo
- Gifu Heart Center, Department of Cardiology, Gifu, Japan
| |
Collapse
|
26
|
Sobue Y, Matsuo H, Kawase Y, Kondo T, Tanigaki T, Okamoto S, Omori H, Hirata T, Kikuchi J, Ota H, Miyake T, Kawamura I, Kamiya H, Tsuchiya K, Suzuki T. 3284Impact of noninvasive fractional flow reserve derived from coronary computed tomography angiography for prognosis in patients with suspected stable coronary artery disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Sobue
- Gifu Heart Center, Gifu, Japan
| | | | | | - T Kondo
- Gifu Heart Center, Gifu, Japan
| | | | | | - H Omori
- Gifu Heart Center, Gifu, Japan
| | | | | | - H Ota
- Gifu Heart Center, Gifu, Japan
| | | | | | | | | | - T Suzuki
- Toyohashi Heart Center, Toyohashi, Japan
| |
Collapse
|
27
|
Sobue Y, Matsuo H, Kawase Y, Kondo T, Tanigaki T, Okamoto S, Omori H, Hirata T, Kikuchi J, Ota H, Kawamura I, Okubo M, Kamiya H, Suzuki T. P1784Risk stratification with combined FFR-CT and Agatston score in patient with suspected coronary artery disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Sobue
- Gifu Heart Center, Gifu, Japan
| | | | | | - T Kondo
- Gifu Heart Center, Gifu, Japan
| | | | | | - H Omori
- Gifu Heart Center, Gifu, Japan
| | | | | | - H Ota
- Gifu Heart Center, Gifu, Japan
| | | | - M Okubo
- Gifu Heart Center, Gifu, Japan
| | | | - T Suzuki
- Toyohashi Heart Center, Toyohashi, Japan
| |
Collapse
|
28
|
Tamao Y, Yamamoto T, Kikumoto R, Hara H, Itoh J, Hirata T, Mineo K, Okamoto S. Effect of a Selective Thrombin Inhibitor MCI-9038 on Fibrinolysis In Vitro and In Vivo. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1661597] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThe effect of a selective thrombin inhibitor, (2R, 4R)-4-methyl-1- [N2- [(3-methyl-1,2,3,4-tetrahydro-8-quinolinyl)sulfo-nyl]-L-arginyl]-2-piperidinecarboxylic acid (MCI-9038), on the fibrinolysis induced by t-PA and u-PA was studied in vitro and in vivo. MCI-9038 remarkably reduced the lysis time of the plasma clot generated by the addition of calcium chloride to the plasma at the concentration ranging from 0.01 to 0.3 μM. Heparin also reduced the plasma clot lysis time with a lower effect than MCI-9038. The fibrin crosslinkage in the plasma clot was inhibited by MCI-9038 or heparin. MCI-9038 potently inhibited the factor XIIIa generation from factor XIII by thrombin.The effect on the in vivo thrombolysis was studied on the arterial thrombosis generated by the endothelial cell injury of the rabbit carotid artery by acetic acid. t-PA dissolved the thrombi with the infusion at 0.96 mg/kg over 2 h without a significant activation of a systemic fibrinolysis. u-PA dissolved the thrombi with the infusion at 180,000 and 360,000 IU/kg over 2 h. At a dose of 0.48 mg/kg t-PA or 90,000 IU/kg u-PA, the thrombi were not dissolved, but the combined use of MCI-9038 at 1.2 mg/kg over 2 h effectively dissolved the thrombi. Thus, combination of MCI-9038 with plasminogen activators accelerated thrombolysis of an experimental thrombosis in rabbits.
Collapse
Affiliation(s)
- Y Tamao
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - T Yamamoto
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - R Kikumoto
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - H Hara
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - J Itoh
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - T Hirata
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - K Mineo
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| | - S Okamoto
- The Research Center, Mitsubishi Chemical Industries Ltd., Midoriku, Yokohama, Japan and the Department of Physiology, Kobe University School of Medicine, Kobe, Japan
| |
Collapse
|
29
|
Hirata T, Shinji O, Masahiro T, Shiro H, Akinobu H, Takayuki M, Takayuki I, Tomohiro N, Tadahiko S, Naruto T, Junji M, Hiroyoshi D. Safety, pharmacokinetic and efficacy findings in an open-label single-arm study of docetaxel (DTX) at a dose of 100 mg/m 2 in Japanese patients with advanced or recurrent breast cancer with appropriate supportive care. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30512-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
30
|
Hirata T, Ikawa T, Wada K, Kanayama N, Morimoto M, Konishi K, Takahashi H, Teshima T. PO-0772: Impact of dose escalation to nerve plexus on the outcome of neoadjuvant CRT for pancreatic cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31082-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
31
|
Negi H, Tamura M, Kawai T, Yoda I, Kawasaki T, Hirata T, Sugimura Y, Okada S, Yamamoto M. The Development and Practical Use of Information Systems in the Pharmaceutical Industry. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634955] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractTo provide information on the efficacy, safety, and quality of medicine promptly and accurately, we have developed two databases: a literature database with numerical data, and a Drug Information database. By an easy-to-use, company-wide information network system, over 1,000 medical representatives in more than 80 offices throughout Japan can retrieve information. Information derived from the system is displayed on the terminal and the original documents are automatically output through a facsimile.
Collapse
|
32
|
Harada D, Kozuki T, Nogami N, Hotta K, Aoe K, Ohashi K, Ninomiya K, Hirata T, Hinotsu S, Toyooka S, Kiura K. MA 07.11 A Phase II Study of Trastuzumab Emtansine in HER2-positive Non-Small-Cell-Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.511] [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]
|
33
|
Wada K, Kishi N, Kanayama N, Hirata T, Kawaguchi Y, Konishi K, Teshima T. Predictors Associated with Severe Acute Esophagitis in Non-small Cell Lung Cancer (NSCLC) Patients Treated with Concomitant Boost Chemoradiation. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
34
|
Hirata T, Arai Y, Takayama M, Osawa Y, Abe Y, Iinuma T, Fukumoto M, Takayama M. PERSONALITY, HEALTH BEHAVIOR, AND MORTALITY IN THE VERY OLD. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T. Hirata
- Keio University School of Medicine, Tokyo, Japan,
| | - Y. Arai
- Keio University School of Medicine, Tokyo, Japan,
| | - M. Takayama
- Keio University School of Medicine, Tokyo, Japan,
| | - Y. Osawa
- National Institute of Health / National Institute on Aging, Baltimore, Maryland,
| | - Y. Abe
- Keio University School of Medicine, Tokyo, Japan,
| | - T. Iinuma
- Nihon University School of Dentistry, Tokyo, Japan,
| | - M. Fukumoto
- Nihon University School of Dentistry, Tokyo, Japan,
| | - M. Takayama
- Keio University Science and Technology, Yokohama, Kanagawa, Japan
| |
Collapse
|
35
|
Arai Y, Hirata T, Takayama M, Abe Y, Ishizaki T, Masui Y, Kamide K, Gondo Y. URINARY ALBUMIN-TO-CREATININE RATIO AND CAROTID ATHEROSCLEROSIS IN THE VERY OLD. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Arai
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan,
| | - T. Hirata
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan,
| | - M. Takayama
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan,
| | - Y. Abe
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan,
| | - T. Ishizaki
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
| | - Y. Masui
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
| | - K. Kamide
- Osaka Universitu, Graduate School of Medicine, Osaka, Japan,
| | - Y. Gondo
- Osaka Universitu, Graduate School of Human Sciences, Osaka, Japan
| |
Collapse
|
36
|
Noguchi K, Ishikawa R, Kawaguchi M, Miyoshi K, Kawasaki T, Hirata T, Fukui M, Kuratani S, Tanaka M, Murakami Y. Expression patterns of Sema3A in developing amniote limbs: With reference to the diversification of peripheral nerve innervation. Dev Growth Differ 2017; 59:270-285. [PMID: 28555754 DOI: 10.1111/dgd.12364] [Citation(s) in RCA: 4] [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: 01/27/2017] [Revised: 04/18/2017] [Accepted: 04/20/2017] [Indexed: 12/11/2022]
Abstract
Paired limbs were acquired in the ancestor of tetrapods and their morphology has been highly diversified in amniotes in relation to the adaptive radiation to the terrestrial environment. These morphological changes may have been induced by modification of the developmental program of the skeletal or muscular system. To complete limb modification, it is also important to change the neuronal framework, because the functions of the limbs rely on neural circuits that involve coordinated movement. Previous studies have shown that class 3 semaphorins (Sema3 semaphorins), which act as repulsive axonal guidance cues, play a crucial role in the formation of the peripheral nerves in mice. Here, we studied the expression pattern of Sema3A orthologues in embryos of developing amniotes, including mouse, chick, soft-shelled turtle, and ocelot gecko. Sema3A transcripts were expressed in restricted mesenchymal parts of the developing limb primordium in all animals studied, and developing spinal nerves appeared to extend through Sema3A-negative regions. These results suggest that a Sema3A-dependent guidance system plays a key role in neuronal circuit formation in amniote limbs. We also found that Sema3A partially overlapped with the distribution of cartilage precursor cells. Based on these results, we propose a model in which axon guidance and skeletogenesis are linked by Sema3A; such mechanisms may underlie functional neuron rearrangement during limb diversification.
Collapse
Affiliation(s)
- Kanami Noguchi
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Ryota Ishikawa
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Masahumi Kawaguchi
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Kanako Miyoshi
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Takahiko Kawasaki
- Division of Brain Function, National Institute of Genetics, SOKENDAI, 1111Yata, Mishima, 411-8540, Japan
| | - Tatsumi Hirata
- Division of Brain Function, National Institute of Genetics, SOKENDAI, 1111Yata, Mishima, 411-8540, Japan
| | - Makiko Fukui
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| | - Shigeru Kuratani
- Laboratory for Evolutionary Morphology, RIKEN Center for Developmental Biology, 2-2-3 Minatojima-minami, Chuoku, Kobe, Hyogo, 650-0047, Japan
| | - Mikiko Tanaka
- School of Life Science and Technology, Tokyo Institute of Technology, B-17, 4259, Nagatsuta-cho, Midori-ku, Yokohama, Japan
| | - Yasunori Murakami
- Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
| |
Collapse
|
37
|
de Frutos C, Bouvier G, Arai Y, Thion M, Lokmane L, Keita M, Garcia-Dominguez M, Charnay P, Hirata T, Riethmacher D, Grove E, Tissir F, Casado M, Pierani A, Garel S. Reallocation of Olfactory Cajal-Retzius Cells Shapes Neocortex Architecture. Neuron 2016; 92:435-448. [DOI: 10.1016/j.neuron.2016.09.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 07/13/2016] [Accepted: 09/06/2016] [Indexed: 11/25/2022]
|
38
|
Kishi N, Imai Y, Kanayama N, Hirata T, Kawaguchi Y, Konishi K, Nishiyama K, Teshima T. Recurrence Patterns of Postoperative Radiation Therapy for Patients With Head and Neck Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1610] [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: 11/16/2022]
|
39
|
Sasaki A, Ide S, Kawamoto Y, Bando T, Murata Y, Shimura M, Yamada K, Hirata A, Nokihara K, Hirata T, Sugiyama H, Maeshima K. Telomere Visualization in Tissue Sections using Pyrrole-Imidazole Polyamide Probes. Sci Rep 2016; 6:29261. [PMID: 27380936 PMCID: PMC4933941 DOI: 10.1038/srep29261] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 06/13/2016] [Indexed: 02/06/2023] Open
Abstract
Pyrrole–Imidazole (PI) polyamides bind to specific DNA sequences in the minor groove with high affinity. Specific DNA labeling by PI polyamides does not require DNA denaturation with harsh treatments of heat and formamide and has the advantages of rapid and less disruptive processing. Previously, we developed tandem hairpin PI polyamide probes (TH59 series), which label telomeres in cultured cell lines more efficiently than conventional methods, such as fluorescence in situ hybridization (FISH). Here, we demonstrate that a TH59 derivative, HPTH59-b, along with immunostaining for specifying cell types in the tissues, visualizes telomeres in mouse and human tissue sections. Quantitative measurements of telomere length with single-cell resolution suggested shorter telomeres in the proliferating cell fractions of tumor than in non-tumor tissues. Thus, PI polyamides are a promising alternative for telomere labeling in clinical research, as well as in cell biology.
Collapse
Affiliation(s)
- Asuka Sasaki
- Structural Biology Center, National Institute of Genetics, and Department of Genetics, Sokendai (Graduate University for Advanced Studies), Mishima, Shizuoka 411-8540, Japan
| | - Satoru Ide
- Structural Biology Center, National Institute of Genetics, and Department of Genetics, Sokendai (Graduate University for Advanced Studies), Mishima, Shizuoka 411-8540, Japan
| | - Yusuke Kawamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Toshikazu Bando
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Yukinori Murata
- Department of Pathology, Hospital, National Center for Global Health and Medicine, Shinjuku, Tokyo 162-8655, Japan
| | - Mari Shimura
- Department of Intractable Diseases, Research Institute, National Center for Global Health and Medicine, Shinjuku, Tokyo 162-8655, Japan
| | - Kazuhiko Yamada
- Department of Surgery, Hospital, National Center for Global Health and Medicine, Shinjuku, Tokyo 162-8655, Japan
| | - Akiyoshi Hirata
- HiPep Laboratories, Nakatsukasa-cho 486-46, Kamigyo-ku, Kyoto 602-8158, Japan
| | - Kiyoshi Nokihara
- HiPep Laboratories, Nakatsukasa-cho 486-46, Kamigyo-ku, Kyoto 602-8158, Japan
| | - Tatsumi Hirata
- Division of Brain Function, Department of Integrated Genetics, National Institute of Genetics, and Department of Genetics, Sokendai, Mishima, Shizuoka 411-8540, Japan
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Kazuhiro Maeshima
- Structural Biology Center, National Institute of Genetics, and Department of Genetics, Sokendai (Graduate University for Advanced Studies), Mishima, Shizuoka 411-8540, Japan
| |
Collapse
|
40
|
Nishikawa T, Miyamatsu N, Higashiyama A, Nishida Y, Kubota Y, Hirata T, Sugiyama D, Kuwabara K, Miyamoto Y, Okamura T. Water intake for preventing stroke in healthy Japanese: KOBE Study. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.217] [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
|
41
|
Nakabayashi K, Hirata T, Oka T. Left atrium compression due to oesophageal dilation can induce acute heart failure. Case Reports 2015; 2015:bcr-2014-209233. [DOI: 10.1136/bcr-2014-209233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
|
42
|
Hirata T, Matsuno H, Kawaguchi D, Yamada NL, Tanaka M, Tanaka K. Effect of interfacial structure on bioinert properties of poly(2-methoxyethyl acrylate)/poly(methyl methacrylate) blend films in water. Phys Chem Chem Phys 2015; 17:17399-405. [DOI: 10.1039/c5cp01972a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(2-methoxyethyl acrylate) (PMEA) segregation to the water interface in a blend film disturbed the network structure of water molecules, resulting in effective suppression of platelet adhesion.
Collapse
Affiliation(s)
- T. Hirata
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - H. Matsuno
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - D. Kawaguchi
- Education Center for Global Leaders in Molecular Systems for Devices
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - N. L. Yamada
- Neutron Science Laboratory
- High Energy Accelerator Research Organization
- Ibaraki 305-0801
- Japan
| | - M. Tanaka
- Department of Biochemical Engineering
- Yamagata University
- Yamagata 992-8510
- Japan
| | - K. Tanaka
- Department of Applied Chemistry
- Kyushu University
- Fukuoka 819-0395
- Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
| |
Collapse
|
43
|
Urata Y, Osuga Y, Koga K, Hirota Y, Hirata T, Harada M, Takamura M, Izumi G, Fujii T. Interleukin-1β increases expression of tryptophan 2,3-dioxygenase and stimulates tryptophan metabolism in ectopic endomtetrial stromal cells. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.030] [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]
|
44
|
Hirata T, Teshima T, Nishiyama K, Otani K, Kawaguchi Y, Konishi K, Tomita Y, Takahashi H, Ohigashi H, Ishikawa O. Histopathological Effects of Preoperative Chemoradiation Therapy for Pancreatic Cancer: Implication of Radiation Dose and Gemcitabine Dose. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
45
|
Fujimoto A, Harada M, Hirata T, Osuga Y, Fujii T. Efficacy of clomiphene citrate supplementation to conventional GnRH antagonist protocols in poor responders undergoing assisted reproductive technology - a prospective randomized trial. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
46
|
Mita S, de Monasterio-Schrader P, Fünfschilling U, Kawasaki T, Mizuno H, Iwasato T, Nave KA, Werner HB, Hirata T. Transcallosal Projections Require Glycoprotein M6-Dependent Neurite Growth and Guidance. Cereb Cortex 2014; 25:4111-25. [PMID: 24917275 DOI: 10.1093/cercor/bhu129] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The function of mature neurons critically relies on the developmental outgrowth and projection of their cellular processes. It has long been postulated that the neuronal glycoproteins M6a and M6b are involved in axon growth because these four-transmembrane domain-proteins of the proteolipid protein family are highly enriched on growth cones, but in vivo evidence has been lacking. Here, we report that the function of M6 proteins is required for normal axonal extension and guidance in vivo. In mice lacking both M6a and M6b, a severe hypoplasia of axon tracts was manifested. Most strikingly, the corpus callosum was reduced in thickness despite normal densities of cortical projection neurons. In single neuron tracing, many axons appeared shorter and disorganized in the double-mutant cortex, and some of them were even misdirected laterally toward the subcortex. Probst bundles were not observed. Upon culturing, double-mutant cortical and cerebellar neurons displayed impaired neurite outgrowth, indicating a cell-intrinsic function of M6 proteins. A rescue experiment showed that the intracellular loop of M6a is essential for the support of neurite extension. We propose that M6 proteins are required for proper extension and guidance of callosal axons that follow one of the most complex trajectories in the mammalian nervous system.
Collapse
Affiliation(s)
- Sakura Mita
- Division of Brain Function, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai), Mishima 411-8540, Japan
| | | | - Ursula Fünfschilling
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, D-37075 Goettingen, Germany
| | - Takahiko Kawasaki
- Division of Brain Function, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai), Mishima 411-8540, Japan
| | - Hidenobu Mizuno
- Division of Neurogenetics, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai), Mishima 411-8540, Japan
| | - Takuji Iwasato
- Division of Neurogenetics, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai), Mishima 411-8540, Japan
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, D-37075 Goettingen, Germany
| | - Hauke B Werner
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, D-37075 Goettingen, Germany
| | - Tatsumi Hirata
- Division of Brain Function, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai), Mishima 411-8540, Japan
| |
Collapse
|
47
|
Suzuki IK, Hirata T. A common developmental plan for neocortical gene-expressing neurons in the pallium of the domestic chicken Gallus gallus domesticus and the Chinese softshell turtle Pelodiscus sinensis. Front Neuroanat 2014; 8:20. [PMID: 24778607 PMCID: PMC3985024 DOI: 10.3389/fnana.2014.00020] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [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] [Received: 01/16/2014] [Accepted: 03/20/2014] [Indexed: 11/13/2022] Open
Abstract
The six-layered neocortex is a unique characteristic of mammals and likely provides the neural basis of their sophisticated cognitive abilities. Although all mammalian species share the layered structure of the neocortex, the sauropsids exhibit an entirely different cytoarchitecture of the corresponding pallial region. Our previous gene expression study revealed that the chicken pallium possesses neural subtypes that express orthologs of layer-specific genes of the mammalian neocortex. To understand the evolutionary steps leading toward animal group-specific neuronal arrangements in the pallium in the course of amniote diversification, we examined expression patterns of the same orthologs and a few additional genes in the pallial development of the Chinese softshell turtle Pelodiscus sinensis, and compared these patterns to those of the chicken. Our analyses highlighted similarities in neuronal arrangements between the two species; the mammalian layer 5 marker orthologs are expressed in the medial domain and the layer 2/3 marker orthologs are expressed in the lateral domain in the pallia of both species. We hypothesize that the mediolateral arrangement of the neocortical layer-specific gene-expressing neurons originated in their common ancestor and is conserved among all sauropsid groups, whereas the neuronal arrangement within the pallium could have highly diversified independently in the mammalian lineage.
Collapse
Affiliation(s)
- Ikuo K Suzuki
- Division of Brain Function, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai) Mishima, Japan ; Institute of Interdisciplinary Research in Human and Molecular Biology, Université Libre de Bruxelles Brussels, Belgium
| | - Tatsumi Hirata
- Division of Brain Function, National Institute of Genetics, Graduate University for Advanced Studies (Sokendai) Mishima, Japan
| |
Collapse
|
48
|
Sakamori Y, Kim Y, Yoshioka H, Hirabayashi M, Onaru K, Fukui M, Hirata T, Nagai H, Ozasa H, Mishima M. Circulating Tumor Cells as a Prognostic Marker in Metastatic Non-Small-Cell Lung Cancer Patients Receiving Chemotherapy. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.82] [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
|
49
|
Hirata T, Otani K, Teshima T, Kawaguchi Y, Konishi K, Tomita Y, Takahashi H, Ohigashi H, Nishiyama K, Ishikawa O. Dose–Volume Analysis for Predicting Histological Effects and Gastrointestinal Complications After Preoperative Chemoradiation Therapy for Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.811] [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]
|
50
|
Murayama I, Miyano A, Sasaki Y, Hirata T, Ichijo T, Satoh H, Sato S, Furuhama K. Technical note: Use of a simplified equation for estimating glomerular filtration rate in beef cattle. J Anim Sci 2013; 91:5240-6. [PMID: 24045472 DOI: 10.2527/jas.2013-6817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study was performed to clarify whether a formula (Holstein equation) based on a single blood sample and the isotonic, nonionic, iodine contrast medium iodixanol in Holstein dairy cows can apply to the estimation of glomerular filtration rate (GFR) for beef cattle. To verify the application of iodixanol in beef cattle, instead of the standard tracer inulin, both agents were coadministered as a bolus intravenous injection to identical animals at doses of 10 mg of I/kg of BW and 30 mg/kg. Blood was collected 30, 60, 90, and 120 min after the injection, and the GFR was determined by the conventional multisample strategies. The GFR values from iodixanol were well consistent with those from inulin, and no effects of BW, age, or parity on GFR estimates were noted. However, the GFR in cattle weighing less than 300 kg, aged<1 yr old, largely fluctuated, presumably due to the rapid ruminal growth and dynamic changes in renal function at young adult ages. Using clinically healthy cattle and those with renal failure, the GFR values estimated from the Holstein equation were in good agreement with those by the multisample method using iodixanol (r=0.89, P=0.01). The results indicate that the simplified Holstein equation using iodixanol can be used for estimating the GFR of beef cattle in the same dose regimen as Holstein dairy cows, and provides a practical and ethical alternative.
Collapse
Affiliation(s)
- I Murayama
- Miyagi Prefectural Federation of Agricultural Mutual Aid Association, Miyagi 989-0731, Japan
| | | | | | | | | | | | | | | |
Collapse
|