1
|
Kai Y, Mei H, Kawano H, Nakajima N, Takai A, Kumon M, Inoue A, Yamashita N. P-138 Transcriptomic signatures in trophectoderm and inner cell mass of human blastocysts with expected pregnancy rates. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.133] [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: 11/13/2022] Open
Abstract
Abstract
Study question
Is it possible to identify the molecular factors that contribute to the implantation potential of blastocysts?
Summary answer
Genes correlated with expected pregnancy rate in trophectoderm (TE) and inner cell mass (ICM) respectively were identified, and aneuploidy alone couldn’t predict the pregnancy expectation.
What is known already
The selection of suitable embryos for transfer is critical for achieving successful pregnancy outcomes in assisted reproductive technology (ART). Although pre-implantation genetic testing for aneuploidy (PGT-A) as well as morphological and chronological evaluation of embryos, have been conducted in clinical practice, they do not fully guarantee successful pregnancy. Recently, transcriptional events in early human embryonic development have been analyzed using RNA-sequencing (RNA-seq) and researchers are attempting to apply this information to ART.
Study design, size, duration
To determine the correlation between blastocyst evaluation and pregnancy rate, we retrospectively analyzed 1,890 cases underwent frozen-thawed blastocyst transfer from March 2018 to December 2020. A total of 13 blastocysts that were cryopreserved for clinical use between February 2011 and September 2018, then scheduled for disposal and with consented for research, were subjected to RNA-seq without distinguishing between conventional in vitro fertilization (c-IVF) and intracytoplasmic sperm injection (ICSI).
Participants/materials, setting, methods
Blastocysts were donated by infertile couples undergoing c-IVF or ICSI cycles at the Yamashita Shonan Yume Clinic with informed consent under ethical approval. TE and ICM cells were collected from blastocysts by using a micromanipulator and then subjected to RNA-seq. Gene expression analysis and digital karyotyping using RNA-seq were performed simultaneously for TE and ICM cells, respectively. One-way analysis of variance, chi-square test and Tukey's multiple comparison test were used for this study.
Main results and the role of chance
Blastocysts were classified into three groups to correlate with pregnancy rates based on the diameter of the blastocyst and the time to reach this size: those taking less than 130 h to reach a diameter of > 170 μm (Group 1, n = 676), those taking more than 140 h to reach a diameter of < 180 μm (Group 2, n = 158), and the rest (Group 3, n = 1,056). The pregnancy rates of Groups 1, 2 and 3 were 59.0%, 16.5%, and 34.2%, respectively (p < 0.01). Assessing the differences in overall transcripts correlated between Group 1 (n = 5), Group 2 (n = 4), and Group 3 (n = 4), 26 and 67 differentially expressed genes (DEGs) were identified in ICM and TE cells, respectively. Importantly, downregulated genes in TE of blastocysts with lower expectation of pregnancy included tight junction-related genes, such as CXADR, CLDN10, and ATP1B1, which were implicated in peri-implantation development. Digital karyotyping revealed karyotypic abnormalities and mosaicism in all groups with no common abnormalities observed, suggesting that aneuploidy alone cannot predict the pregnancy expectation.
Limitations, reasons for caution
Although 93 genes potentially related to implantation have been identified, it is still unclear how these genes are involved in implantation. In vitro implantation models using human embryos and artificial embryos currently under development are expected to contribute to the elucidation of the functions of these genes.
Wider implications of the findings
Our results provide reliable candidates for genes that could allow for non-invasive selection of high-quality blastocysts for ART and add to the knowledge base of transcriptional events in human peri-implantation development.
Trial registration number
not applicable
Collapse
Affiliation(s)
- Y Kai
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center , Fujisawa, Japan
| | - H Mei
- RIKEN Center for Integrative Medical Sciences, Metabolic Epigenetics , Yokohama, Japan
| | - H Kawano
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center , Fujisawa, Japan
| | - N Nakajima
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center , Fujisawa, Japan
| | - A Takai
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center , Fujisawa, Japan
| | - M Kumon
- RIKEN Center for Integrative Medical Sciences, Metabolic Epigenetics , Yokohama, Japan
| | - A Inoue
- RIKEN Center for Integrative Medical Sciences, Metabolic Epigenetics , Yokohama, Japan
| | - N Yamashita
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center , Fujisawa, Japan
| |
Collapse
|
2
|
Ueo H, Ueo H, Minoura I, Gamachi A, Doi T, Yamaguchi M, Yamashita T, Tsuda H, Moriya T, Yamaguchi R, Kozuka Y, Sasaki T, Masuda T, Kai Y, Kubota Y, Urano Y, Mori M, Mimori K. Clinical usefulness of a novel fluorescence technique for the intraoperative diagnosis of surgical margins in patients with breast cancer. Br J Surg 2021; 108:e340-e342. [PMID: 34428279 DOI: 10.1093/bjs/znab265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/02/2021] [Accepted: 06/22/2021] [Indexed: 11/12/2022]
Abstract
In both 5- and 15-min data, FI was significantly higher in malignant tissues than in benign tissues. The diagnostic accuracy was similar at 5 and 15 min. Therefore, the 5-min FI was enough applying in the further analyses.
Collapse
Affiliation(s)
- H Ueo
- Department of Surgery and Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Ueo Breast Cancer Hospital, Oita, Japan
| | - H Ueo
- Ueo Breast Cancer Hospital, Oita, Japan
| | - I Minoura
- Goryo Chemical, Inc., Sapporo, Japan
| | - A Gamachi
- Department of Pathology, Almeida Memorial Hospital, Oita, Japan
| | - T Doi
- Breast Cancer Centre, Shonan Memorial Hospital, Kamakura, Japan
| | - M Yamaguchi
- Department of Breast Surgery, JCHO Kurume General Hospital, Kurume, Japan
| | - T Yamashita
- Department of Breast and Endocrine Surgery, Kanagawa Cancer Centre, Yokohama, Japan
| | - H Tsuda
- Department of Basic Pathology, National Defence Medical College, Tokorozawa, Japan
| | - T Moriya
- Department of Pathology, Kawasaki Medical School, Kurashiki, Japan
| | - R Yamaguchi
- Department of Pathology and Laboratory Medicine, Kurume University Medical Centre, Kurume, Japan
| | - Y Kozuka
- Department of Pathology, Mie University Hospital, Tsu, Japan
| | - T Sasaki
- Department of Next-Generation Pathology Information and Networking, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Masuda
- Department of Surgery, Kyushu University Beppu Hospital, Beppu, Japan
| | - Y Kai
- Ueo Breast Cancer Hospital, Oita, Japan
| | - Y Kubota
- Ueo Breast Cancer Hospital, Oita, Japan
| | - Y Urano
- Graduate School of Medicine and Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - M Mori
- Department of Surgery and Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Mimori
- Department of Surgery, Kyushu University Beppu Hospital, Beppu, Japan
| |
Collapse
|
3
|
Kai Y, Kawano H, Yamashita N. O-154 First mitotic spindle formation led by sperm centrosome-dependent microtubule organising centres may cause high incidence of zygotic division errors in humans. Hum Reprod 2021. [DOI: 10.1093/humrep/deab127.022] [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: 11/12/2022] Open
Abstract
Abstract
Study question
Why do multinucleated blastomeres appear at high frequency in two-cell-stage embryos in humans?
Summary answer
Failure in microtubule assembly during the first mitotic spindle body formation by sperm centrosome-dependent microtubule organising centres (MTOCs) may lead to chromosomal instability.
What is known already
Unlike that in mice, multinucleated blastomeres appear at high frequency in two-cell-stage embryos in humans. However, the underlying mechanism remains elusive. In mice, multiple acentriolar MTOCs appear around the male and female pronuclei after pronuclear disappearance and contribute to dual-spindle formation, engulfing each parental chromosome. This spindle formation may ensure an error-free division, keeping the chromosomes stable during the first cleavage, as observed in mice, but it is unclear whether a similar mechanism exists in humans.
Study design, size, duration
To examine how sperm centrosomes contribute to MTOC formation in humans, two types of 3PN zygotes derived fromeither conventional in vitro fertilization (c-IVF, n = 30) or intracytoplasmic sperm injection (ICSI, n = 10) were used. The zygotes were collected from October 2018 to January 2020. MTOC and mitotic spindle formation at consecutive stages of development during the first cleavage were analysed under static and dynamic conditions using immunofluorescence assay and fluorescent live-cell imaging.
Participants/materials, setting, methods
Under ethics approval, 3PN zygotes were donated by infertile couples undergoing c-IVF or ICSI cycles at the Yamashita Shonan Yume Clinic in Japan. All participants provided informed consent. Immunofluorescence assay was performed using antibodies against α-tubulin, pericentrin, and H3K9me3 after fixation with MTSB-XF solution. Fluorescent live-cell imaging was performed using TagGFP2-H2B mRNA (chromosome marker) and FusionRed-MAP4 mRNA (microtubule marker).
Main results and the role of chance
Immunofluorescence revealed that while 3PN zygotes derived from c-IVF showed four pericentrin dots, those derived from ICSI exhibited two pericentrin dots. In pro-metaphase, an independent group of chromosomes derived from each pronucleus and MTOCs were formed by the sperm centrosome at the core. Microtubules from each MTOC extended toward the chromosomes in the early metaphase; a quadrupolar spindle was formed in the c-IVF-derived zygotes, and a bipolar spindle was formed in the ICSI-derived zygotes by the MTOCs at the zygote apex after chromosome alignment. In pro-metaphase, the microtubules extended from the MTOCs to the nearest chromosome. Since microtubule assembly was found on oocyte-derived chromosomes, we hypothesised that whether a chromosome is surrounded by microtubules depends on the location of the MTOCs, irrespective of its origin. Live-cell imaging of histone H2B and MAP4 revealed that four MTOCs appeared around the three pronuclei just before the disappearance of the pronuclear membrane; microtubules then extended from the MTOCs toward the chromosomes, beginning to form a mitotic spindle as the chromosomes moved to the centre of the oocyte. Interestingly, one of the three assembled chromosome groups showed no microtubule assembly in the pro-metaphase. Similar results were obtained in all six 3PN zygotes subjected.
Limitations, reasons for caution
We demonstrated the high risk of developing bare chromosomes not surrounded by microtubules during the formation of the first mitotic spindle, using human tripronuclear zygotes. However, owing to unavailability of normal fertilized oocytes for this study because of the clinical use, we were unable to confirm this in normal zygotes.
Wider implications of the findings
Although two sperm centrosome-dependent MTOCs are expected to be formed in normal fertilized oocytes, these MTOCs are not sufficient to completely enclose physically separated female and male chromosomes with the microtubules. This explains the high frequency of zygotic division errors that lead to unstable human chromosomes.
Trial registration number
not applicable
Collapse
Affiliation(s)
- Y Kai
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center, Fujisawa, Japan
| | - H Kawano
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center, Fujisawa, Japan
| | - N Yamashita
- Yamashita Shonan Yume Clinic, Reproductive Medicine Research Center, Fujisawa, Japan
| |
Collapse
|
4
|
Nakajima N, Kawano H, Kai Y, Takai A, Abe M, Iimura Y, Cheng M, Yoshida M, Yamashita N. P–248 Statistical estimation for incidence of blastocyst trophectoderm vesicles (TVs) and efficacy of assisted hatching (AH). Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.247] [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: 11/13/2022] Open
Abstract
Abstract
Study question
The aim of this study is to analyse the association between blastocyst diameter and TVs development, and to examine the efficacy of AH.
Summary answer
Blastocysts with a diameter of more than 170 μm leads to high incidence of TVs and AH applied from the incidence should be effective.
What is known already
TVs are protrusion of trophectoderm cells often observed in expanding blastocyst stages. TVs can be observed in expanding blastocysts regardless of Intracytoplasmic sperm injection (ICSI) and Conventional-IVF (C-IVF), when the internal pressure of blastocysts increase. The rate of TVs incidence in blastocysts inseminated by ICSI is higher than that by C-IVF, due to penetration of the needle into the zona pellucida. Moreover, it has been reported that TVs may inhibit blastocyst hatching. However, the developmental timing of TVs is still unclear, and there is no study that has analysed the association between blastocyst diameter and the incidence of TVs.
Study design, size, duration
1) Diameters and TVs incidence of blastocysts by ICSI and C-IVF were measured, and the cut-off value and the area under the curve (AUC) of the receiver operating characteristic (ROC) curve were calculated to estimate the timing of TV incidence. 2) We analysed the clinical pregnancy rates of blastocysts with TVs treated by AH compared to those of blastocysts by C-IVF not subjected to AH.
Participants/materials, setting, methods
This study included 821 transferred frozen blastocysts ranging from March 2018 to November 2019. The embryos were cultured in a dry incubator after insemination by ICSI or C-IVF. Blastocyst freezing conditions were set at day5 to day7 with a diameter of more than 150 μm in inner diameter of zona pellucida, and this was measured before freezing. The ROC curve was performed using EZR statistical analysis software.
Main results and the role of chance
1) The incidence of TVs in blastocysts by ICSI and C-IVF was 27.5% (117/424) and 14.6% (58/397) respectively. The rate of the incidence of TVs in blastocysts inseminated by ICSI and C-IVF; 8.6% (12/140) and 0.95% (1/105) in 150–159 μm, 12.7% (14/110) and 8.2% (6/73) in 160–169 μm, 40.6% (28/69) and 10.5% (6/57) in 170–179 μm, 55.6% (30/54) and 25.5% (13/51) in 180–189 μm, 66.7% (20/30) and 35.7% (10/28) in 190–199 μm, and 68.4% (13/19) and 26.8% (22/82) in the diameter of more than 200 μm. The cut-off value of the ROC curve was respectively 170 μm (sensitivity 78.6% and specificity 73.0%) and 176 μm (sensitivity 84.5% and specificity 59.6%) in the diameter; the AUC was 0.8 [95%CI:0.752–0.848] and 0.74 [95%CI:0.687–0.793] respectively. 2) The clinical pregnancy rate of TVs blastocyst vs C-IVF blastocyst was 52.7% (88/167) vs 57.8% (37/64) respectively. There is no significant difference between the two clinical pregnancy rates (P = 0.556).
Limitations, reasons for caution
The findings of this study have to be seen in light of some limitations. Since this study aimed to analyse the incidence of TVs based on blastocyst size, we did not take into account the grade according to the Gardner classification and the number of trophectoderm cells.
Wider implications of the findings: Blastocysts inseminated by ICSI and C-IVF were highly likely to have TVs above 170 μm and 176 μm respectively. The clinical pregnancy rates of the blastocyst with TV treated by AH was similar to those of the C-IVF blastocyst.
Trial registration number
Not applicable
Collapse
Affiliation(s)
- N Nakajima
- Yamashita Shonan Yume Clinic, Embryologist, Fujisawa city- Kanagawa, Japan
| | - H Kawano
- Yamashita Shonan Yume Clinic, Embryologist, Fujisawa city- Kanagawa, Japan
| | - Y Kai
- Reproductive research center in Yamashita Shonan Yume Clinic, Researcher, Fujisawa city, Japan
| | - A Takai
- Yamashita Shonan Yume Clinic, Embryologist, Fujisawa city- Kanagawa, Japan
| | - M Abe
- Yamashita Shonan Yume Clinic, Embryologist, Fujisawa city- Kanagawa, Japan
| | - Y Iimura
- Yamashita Shonan Yume Clinic, Embryologist, Fujisawa city- Kanagawa, Japan
| | - M Cheng
- Yamashita Shonan Yume Clinic, Embryologist, Fujisawa city- Kanagawa, Japan
| | - M Yoshida
- Yamashita Shonan Yume Clinic, Physician, Fujisawa city- Kanagawa, Japan
| | - N Yamashita
- Yamashita Shonan Yume Clinic, Physician, Fujisawa city- Kanagawa, Japan
| |
Collapse
|
5
|
Kai Y, Arimura H, Toya R, Saito T, Matsuyama T, Fukugawa Y, Shimohigashi Y, Maruyama M, Oya N. Applicability of Diagnostic Position PET/CT Images Using a Rigid Image Registration Technique to Delineation of Gross Tumor Volumes for Nasopharyngeal Carcinoma Radiotherapy: An Observer Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.895] [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]
|
6
|
Shimohigashi Y, Doi Y, Maruyama M, Yotsuji Y, Kai Y, Toya R. EP-1956 Image quality of in-treatment 4D-CBCT obtained at various doses in VMAT for SBRT: a phantom study. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32376-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: 10/26/2022]
|
7
|
Toya R, Saito T, Kai Y, Shiraishi S, Matsuyama T, Watakabe T, Sakamoto F, Tsuda N, Shimohigashi Y, Yamashita Y, Oya N. PO-0797 Impact of 99mTc-GSA SPECT image-guided inverse planning on DFH parameters for SBRT planning for HCC. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31217-4] [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: 10/26/2022]
|
8
|
Utsunomiya T, Kumasako Y, Kai Y, Kawabe F. The new embryo culture medium based on the amino acid concentration of human oviductal fluid enhance the embryo developmental ability; randomized trial. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
9
|
Kikko T, Ishizaki D, Kuwamura K, Okamoto H, Ujiie M, Ide A, Saegusa J, Kai Y, Nakayama K, Fujioka Y. Juvenile migration of the exclusively pelagic cyprinid, Gnathopogon caerulescens (Honmoroko) in Lake Biwa, Central Japan. J Fish Biol 2018; 92:1590-1603. [PMID: 29624686 DOI: 10.1111/jfb.13616] [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] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 03/05/2018] [Indexed: 06/08/2023]
Abstract
Migration of wild and cultivated juvenile honmoroko Gnathopogon caerulescens of from the spawning and nursery areas in Lake Biwa were investigated, both in the Ibanaiko Lagoon and its outlet to Daido River, using beam-trawl surveys in 2013 and 2014. The study demonstrated migration of G. caerulescens from a nursery lagoon toward Lake Biwa after the juvenile stage. These findings appear to be the first direct evidence for migration of an exclusively pelagic cyprinid species from a littoral nursery to a pelagic adult habitat in a large deep lake.
Collapse
Affiliation(s)
- T Kikko
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - D Ishizaki
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - K Kuwamura
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - H Okamoto
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - M Ujiie
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - A Ide
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - J Saegusa
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | - Y Kai
- Maizuru Fisheries Research Station, Field Science Education and Research Center, Kyoto University, Nagahama, Maizuru, Kyoto, 625-0086, Japan
| | - K Nakayama
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Y Fujioka
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| |
Collapse
|
10
|
Toya R, Saito T, Shiraishi S, Kai Y, Murakami R, Matsuyama T, Watakabe T, Sakamoto F, Tsuda N, Shimohigashi Y, Yamashita Y, Oya N. EP-2093: Dose–function histogram evaluation using 99mTc-GSA SPECT/CT images for SBRT planning for HCC. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32402-2] [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: 11/28/2022]
|
11
|
Kai K, Kai Y, Nishida M, Nasu K, Iwanaga S, Narahara H. Modified Gilliam-Doleris hysteropexy for juvenile uterovaginal prolapse. CLIN EXP OBSTET GYN 2018. [DOI: 10.12891/ceog3753.2018] [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: 11/01/2022]
|
12
|
Koge J, Matsumoto S, Nakahara I, Ishii A, Hatano T, Sadamasa N, Kai Y, Ando M, Saka M, Chihara H, Takita W, Tokunaga K, Kamata T, Nishi H, Hashimoto T, Tsujimoto A, Kira J, Nagata I. Reduction in stroke alert response time for patients with in-hospital stroke using a standardized protocol. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
13
|
Matsumoto S, Koyama H, Hatano T, Sadamasa N, Kai Y, Saka M, Ando M, Hashimoto T, Chihara H, Takita W, Tokunaga K, Kamata T, Tujimoto A, Nagata I, Kira J. The development of visual task management ICT system for acute stroke care. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1745] [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]
|
14
|
Yu HJ, Kai Y, Kim JK. Genetic diversity and population structure of Hyporhamphus sajori (Beloniformes: Hemiramphidae) inferred from mtDNA control region and msDNA markers. J Fish Biol 2016; 89:2607-2624. [PMID: 27687511 DOI: 10.1111/jfb.13152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
This paper presents preliminary data on the genetic diversity and population structure of Hyporhamphus sajori by analysing a 510 bp sequence in the mitochondrial DNA (mtDNA) control region and eight polymorphic microsatellite DNA loci. The H. sajori individuals from different locations were indistinguishable from one another based on mtDNA variation, as demonstrated with a neighbour-joining tree and minimum spanning network analysis. Low level of genetic diversity and the absence of population structure in H. sajori from the north-west Pacific Ocean, combined with negative indices for neutral evolution in these populations, suggest that H. sajori underwent a population expansion after a recent bottleneck. The Structure analysis, discriminant analysis of principal components (DAPC) and the pair-wise ΦST values after Bonferroni correction using eight microsatellite loci provided no clear inference on the genetic differentiation and thus no evidence of population structure of H. sajori. The genetic connectivity among locations might be due to fairly high gene flow via transport of eggs and larvae by the Kuroshio and Tsushima warm current. This study revealed low levels of genetic diversity and suggested high level of contemporary gene flow among populations of H. sajori in the East (Japan) Sea and the Pacific Ocean.
Collapse
Affiliation(s)
- H J Yu
- Department of Marine Biology, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 608-737, Korea
| | - Y Kai
- Maizuru Fisheries Research Station, Field Science Education and Research Center, Kyoto University, Maizuru, Kyoto, 625-0086, Japan
| | - J-K Kim
- Department of Marine Biology, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 608-737, Korea
| |
Collapse
|
15
|
Toya R, Kai Y, Saito T, Kuraoka A, Shimohigashi Y, Nakaguchi Y, Maruyama M, Murakami R, Yamashita Y, Oya N. Plan Quality and Delivery Time Comparisons Between Volumetric Modulated Arc Therapy and Intensity Modulated Radiation Therapy for Scalp Angiosarcoma: A Planning Study Using X-ray Voxel Monte Carlo Algorithm. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2423] [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: 10/20/2022]
|
16
|
Kai Y, Hamada J, Morioka M, Ushio Y, Fujioka S. Foramen Magnum Dural Arteriovenous Fistulae with Repeated Subarachnoid Haemorrhage. Interv Neuroradiol 2016; 4:171-6. [DOI: 10.1177/159101999800400210] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/1998] [Accepted: 03/20/1998] [Indexed: 11/15/2022] Open
Abstract
We report a patient who had dural arteriovenous fistulae in the region of the foramen magnum with repeated subarachnoid haemorrhage. Magnetic resonance imaging revealed abnormal vascular structures on the right side of the medulla oblongata in an extra-axial portion. Angiographic findings showed that the lesion was supplied from the meningeal arteries and drained directly into the subarachnoid vein. There was venous dilatation. Embolisation was performed via the transarterial approach using a micro coil and liquid material. Three years after treatment, the patients' condition is good and follow-up angiograms confirmed the stability of the treatment outcome. While dural arteriovenous fistulae of the foramen magnum are rare, this malformation results in a high rate of bleeding and requires treatment.
Collapse
Affiliation(s)
| | | | | | | | - S. Fujioka
- Division of Neurosurgery, Kumamoto Saiseikai Hospital; Kumamoto, Japan
| |
Collapse
|
17
|
Tsutani Y, Miyata Y, Mimura T, Ito M, Kai Y, Kagimoto A, Nakayama H, Okumura S, Yoshimura M, Okada M. 3004 Subobar resection choice based on HRCT and FDG-PET/CT findings for clinical stage IA non-small cell lung cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31650-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
18
|
Madokoro K, Gotoh M, Kai Y, Kakuma T, Nagamatsu T, Kanazawa T, Shiba N. Influence of external load level on scapula upward rotation during elevation. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1768] [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: 10/23/2022]
|
19
|
Maeda S, Saimura M, Minami S, Kurashita K, Nishimura R, Kai Y, Yano H, Tanaka T, Mitsuyama S, Tamura K. P171 Efficacy and safety of eribulin as first- to third-line treatment with HER2(–) MBC (KBC-SG 1105). Breast 2015. [DOI: 10.1016/s0960-9776(15)70212-2] [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: 10/23/2022] Open
|
20
|
Kikko T, Ishizaki D, Ninomiya K, Kai Y, Fujioka Y. Diel patterns of larval drift of honmoroko Gnathopogon caerulescens in an inlet of Ibanaiko Lagoon, Lake Biwa, Japan. J Fish Biol 2015; 86:409-415. [PMID: 25430054 DOI: 10.1111/jfb.12570] [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] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 09/28/2014] [Indexed: 06/04/2023]
Abstract
Diel drift patterns of larvae of the endangered cyprinid Gnathopogon caerelescens in an inlet of the Ibanaiko Lagoon, connected to Lake Biwa in Japan, were assessed in April 2012. Peak occurrence of yolk-sac larvae was within a few hours after dark. Drift of newly hatched larvae is considered to be an important biological mechanism that ensures larval dispersal and recruitment from the inlets (spawning grounds) to the lagoon which functions as a nursery ground.
Collapse
Affiliation(s)
- T Kikko
- Shiga Prefectural Fisheries Experimental Station, 2138-3, Hassaka, Hikone, Shiga, 522-0057, Japan
| | | | | | | | | |
Collapse
|
21
|
Sato S, Shimada M, Ohta T, Kojimahara T, Tokunaga H, Takano T, Yamaguchi S, Fujiwara K, Tanabe H, Okamoto A, Nishio S, Ushijima K, Futagami M, Yokoyama Y, Fujimoto H, Nakamura H, Nakamura T, Moriyama M, Kai Y, Kigawa J. Adjuvant Chemotherapy Using Taxane Plus Carboplatin for Stage Ib-Iib Cervical Non-Squamous Cell Carcinoma with Pathologic High-Risk Factor. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu338.46] [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
|
Nagatomo Y, Okayama A, Murai K, Sasaki T, Kuroki M, Tanaka G, Iga M, Kai Y, Tsubouchi H. Successful treatment using high-dose intravenous immunoglobulin in a patient with rapidly progressive interstitial pneumonia associated with dermatomyositis. Mod Rheumatol 2014; 10:165-8. [PMID: 24383595 DOI: 10.3109/s101650070025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract A 36-year-old male patient with dermatomyo-sitis (DM) associated with rapidly progressive interstitial pneumonia (IP) was successfully treated by high-dose intravenous immunoglobulin (IVIG). He suffered from myopathy, skin lesions, and IP. In spite of the treatment with a high-dose corticosteroid, IP progressed rapidly. Then high-dose intravenous immunoglobulin (20 g/day, 4 days) was administered. The skin lesions, myopathy, and pulmonary lesions improved. High-dose IVIG was considered to be a relatively safe and effective treatment for progressive IP associated with DM.
Collapse
Affiliation(s)
- Y Nagatomo
- Department of Internal Medicine II, Miyazaki Medical College , 5200 Kihara, Kiyotake, Miyazaki 889-1601 , Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Kai Y, Sargent H, Iwata K, Yumoto K, Iba Y, Mio Y. Discrimination of maternally or paternally derived pronuclei by epigenetic divergence in human zygotes. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1211] [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]
|
24
|
Kai Y, Kawano Y, Okamoto M, Nasu K, Narahara H. The effects of metformin on the activation of amp-activated protein kinase (AMPK) in human granulosa cells. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.855] [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: 10/26/2022]
|
25
|
Yamamoto J, Kakeda S, Shimajiri S, Takahashi M, Watanabe K, Kai Y, Moriya J, Korogi Y, Nishizawa S. Tumor consistency of pituitary macroadenomas: predictive analysis on the basis of imaging features with contrast-enhanced 3D FIESTA at 3T. AJNR Am J Neuroradiol 2013; 35:297-303. [PMID: 23928139 DOI: 10.3174/ajnr.a3667] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Preoperative evaluation of pituitary macroadenoma tumor consistency is important for neurosurgery. Thus, we aimed to retrospectively assess the role of contrast-enhanced FIESTA in predicting the tumor consistency of pituitary macroadenomas. MATERIALS AND METHODS Twenty-nine patients with pituitary macroadenomas underwent conventional MR imaging sequences and contrast-enhanced FIESTA before surgery. Two neuroradiologists assessed the contrast-enhanced FIESTA, contrast-enhanced T1WI, and T2WI. On the basis of surgical findings, the macroadenomas were classified by the neurosurgeons as either soft or hard. Finally, Fisher exact probability tests and unpaired t tests were used to compare predictions on the basis of the MR imaging findings with the tumor consistency, collagen content, and postoperative tumor size. RESULTS The 29 pituitary macroadenomas were classified as either solid or mosaic types. Solid type was characterized by a homogeneous pattern of tumor signal intensity without intratumoral hyperintense dots, whereas the mosaic type was characterized by many intratumoral hyperintense dots on each MR image. Statistical analyses revealed a significant correlation between tumor consistency and contrast-enhanced FIESTA findings. Sensitivity and specificity were higher for contrast-enhanced FIESTA (1.00 and 0.88-0.92, respectively) than for contrast-enhanced T1WI (0.80 and 0.25-0.33, respectively) and T2WI (0.60 and 0.38-0.54, respectively). Compared with mosaic-type adenomas, solid-type adenomas tended to have a hard tumor consistency as well as a significantly higher collagen content and lower postoperative tumor size. CONCLUSIONS Contrast-enhanced FIESTA may provide preoperative information regarding the consistency of macroadenomas that appears to be related to the tumor collagen content.
Collapse
Affiliation(s)
- J Yamamoto
- From the Departments of Neurosurgery (J.Y., M.T., K.W., S.N.)
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Oda S, Utsunomiya D, Hirai T, Kai Y, Ohmori Y, Shigematsu Y, Iryo Y, Uetani H, Azuma M, Yamashita Y. Comparison of dynamic contrast-enhanced 3T MR and 64-row multidetector CT angiography for the localization of spinal dural arteriovenous fistulas. AJNR Am J Neuroradiol 2013; 35:407-12. [PMID: 23907244 DOI: 10.3174/ajnr.a3660] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND PURPOSE For the localization of spinal dural arteriovenous fistulas, it is not determined whether dynamic contrast-enhanced MRA is more reliable than multidetector CTA. The aim of this study was to compare the agreement between intra-arterial DSA, dynamic contrast-enhanced MRA at 3T, and 64-row multidetector CTA for the localization of spinal dural arteriovenous fistulas. MATERIALS AND METHODS We enrolled 12 consecutive patients (11 men, 1 woman; age range, 46-83 years; mean, 65 years) who underwent preoperative dynamic contrast-enhanced MRA at 3T and 64-row multidetector CTA. The spinal dural arteriovenous fistula location was confirmed by intra-arterial DSA as the reference standard. Two reviewers independently evaluated the level of the artery feeding the spinal dural arteriovenous fistula on the basis of continuity between the feeder and abnormal spinal vessels on 3T dynamic contrast-enhanced MRA and 64-row multidetector CTA images. Interobserver and intermodality agreement was determined by calculation of the κ coefficient. RESULTS On DSA, the vessel feeding the spinal dural arteriovenous fistula was the intercostal artery (7 cases), the lumbar artery (3 cases), and the internal iliac artery or the ascending pharyngeal artery (1 case each). For the fistula level, interobserver agreement was excellent for 3T dynamic contrast-enhanced MRA (κ = 0.97; 95% CI, 0.92-1.00) and very good for 64-row multidetector CTA (κ = 0.84; 95% CI, 0.72-0.96). Intermodality agreement with DSA was good for 3T dynamic contrast-enhanced MRA (κ = 0.78; 95% CI, 0.49-1.00) and moderate for 64-row multidetector CTA (κ = 0.41; 95% CI, 0.020-0.84). CONCLUSIONS For the localization of spinal dural arteriovenous fistulas, 3T dynamic contrast-enhanced MRA may be more reliable than 64-row multidetector CTA.
Collapse
Affiliation(s)
- S Oda
- From the Departments of Diagnostic Radiology (S.O., D.U., T.H., Y.S., Y.I., H.U., M.A., Y.Y.)
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Muto N, Kai Y, Noda T, Nakabo T. Extensive hybridization and associated geographic trends between two rockfishes Sebastes vulpes
and S. zonatus
(Teleostei: Scorpaeniformes: Sebastidae). J Evol Biol 2013; 26:1750-62. [DOI: 10.1111/jeb.12175] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 03/06/2013] [Accepted: 03/28/2013] [Indexed: 11/27/2022]
Affiliation(s)
- N. Muto
- Division of Applied Biosciences; Graduate School of Agriculture; Kyoto University c/o The Kyoto University Museum; Kyoto University; Sakyo Kyoto Japan
| | - Y. Kai
- Field Science Education and Research Centre; Maizuru Fisheries Research Station; Kyoto University; Maizuru Kyoto Japan
| | - T. Noda
- Tohoku National Fisheries Research Institute; Fisheries Research Agency; Miyako Iwate Japan
| | - T. Nakabo
- The Kyoto University Museum; Kyoto University; Sakyo Kyoto Japan
| |
Collapse
|
28
|
Fujii K, Kai Y, Matsunobu S, Sato H, Mikami A. Isolation of digested sludge-assimilating fungal strains and their potential applications. J Appl Microbiol 2013; 115:718-26. [DOI: 10.1111/jam.12266] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/22/2013] [Accepted: 05/27/2013] [Indexed: 11/29/2022]
Affiliation(s)
- K. Fujii
- Faculty of Agriculture; Yamaguchi University; Yamaguchi Japan
| | - Y. Kai
- Faculty of Agriculture; Yamaguchi University; Yamaguchi Japan
| | - S. Matsunobu
- Faculty of Agriculture; Yamaguchi University; Yamaguchi Japan
| | - H. Sato
- Faculty of Agriculture; Yamaguchi University; Yamaguchi Japan
| | - A. Mikami
- Faculty of Agriculture; Yamaguchi University; Yamaguchi Japan
| |
Collapse
|
29
|
Tejera A, Herrero J, Rubio I, Castello D, Pellicer A, Meseguer M, Iwata K, Yumoto K, Ueda M, Matoba Y, Kamada Y, Furuyama S, Mizoguchi C, Sargent HC, Kai Y, Tsuchie Y, Iba Y, Mio Y, Wirka KA, Suraj K, Conaghan J, Gvakharia M, Ivani K, Murugesan R, Chen AA, Shen S, Sundvall L, Ingerslev HJ, Knudsen UB, Kirkegaard K, Best L, Campbell A, Duffy S, Montgomery S, Fishel S, Montag M, Toth B, Weigert J, Strowitzki T, Kumtepe Y, Kahraman S, Cetinkaya M, Pirkevi C, Yelke H, Montag M. Session 57: Time lapse: the real revolution for ambryo assessment? Hum Reprod 2013. [DOI: 10.1093/humrep/det190] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
30
|
Miyauchi S, Umekita K, Hidaka T, Hashiba Y, Kawaguchi T, Matsuda M, Kubo K, Ueno S, Kusumoto N, Takajo I, Kai Y, Nagatomo Y, Okayama A. FRI0194 Treatment with anti-tumor necrosis factor (TNF) biologics to human t-lymphotropic virus type 1 (HTLV-1) positive patients with rheumatoid arthritis (RA): a case-control study. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1321] [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: 11/03/2022]
|
31
|
Kai Y, Ohmori Y, Watanabe M, Kaku Y, Morioka M, Hirano T, Yano S, Kawano T, Hamada JI, Kuratsu JI. A 6-fr guiding catheter (slim guide(®)) for use with multiple microdevices. An experimental study. Interv Neuroradiol 2013; 19:7-15. [PMID: 23472717 DOI: 10.1177/159101991301900101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Accepted: 09/23/2012] [Indexed: 11/16/2022] Open
Abstract
A modified technique is required in patients with wide-necked aneurysms whose treatment by the single microcatheter technique is difficult. We developed a 6-Fr guiding catheter (Slim Guide(®)) that features a large lumen (0.072 inch) for performing the modified technique. To evaluate the usefulness of Slim Guide(®) we carried out experiments using three types of 6-Fr guiding catheter. In experiment 1, the shaft hardness and kink resistance were compared among three different guiding catheters (Slim Guide(®), Launcher(®), Envoy(®)). In experiment 2, we inserted a microballoon catheter and a microcatheter into the three different guiding catheters and recorded the maximal infusion pressure. In experiment 3, we inserted 13 different types of microdevices into the three different guiding catheters and evaluated the resistance of the microdevices. Although the shaft of the Slim Guide(®) was softer than that of the other two guiding catheters, its kink resistance was comparable. The maximal infusion pressure was significantly lower than with Launcher(®) or Envoy(®) catheters. Furthermore, with Slim Guide(®), in 136 of 143 microdevice combinations examined (95.1%) there was no resistance; this was true for 125 (87.4%) and 116 (81.1%) combinations using the Launcher(®) - and the Envoy(®) guiding catheters, respectively. There was a significant difference between Slim Guide(®) and the other two guiding catheters with respect to their accommodation of double microsystems (p<0.05). Although the inner diameter of Slim Guide(®) is slightly larger than of the other two guiding catheters, it significantly increased the combination of microdevices that could be used for the coil embolization of difficult aneurysms.
Collapse
Affiliation(s)
- Y Kai
- Department of Neurosurgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Uetani H, Akter M, Hirai T, Shigematsu Y, Kitajima M, Kai Y, Yano S, Nakamura H, Makino K, Azuma M, Murakami R, Yamashita Y. Can 3T MR angiography replace DSA for the identification of arteries feeding intracranial meningiomas? AJNR Am J Neuroradiol 2012; 34:765-72. [PMID: 23079409 DOI: 10.3174/ajnr.a3284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE For identifying the arterial feeders of meningiomas, the usefulness of 3D TOF MRA at 3T has not been systematically investigated. This study was intended to assess whether unenhanced 3D TOF MRA at 3T can replace DSA for the identification of arteries feeding intracranial meningiomas and whether it is useful for assessing their dural attachment. MATERIALS AND METHODS Twenty-one consecutive patients with intracranial meningiomas (18 women, 3 men; aged 42-77 years, mean 57 years) underwent DSA, conventional MR imaging, and 3D TOF MRA. Two neuroradiologists independently evaluated the primary and secondary feeders of each tumor on maximum-intensity-projection and source MRA images. They also identified the location of dural attachments based on information from MR imaging/MRA images. Interobserver and intermodality agreement was determined by calculating the κ coefficient. RESULTS For the identification of primary and secondary feeders on MRA images, interobserver agreement was very good (κ=0.83; 95% CI, 0.66-1.00) and moderate (κ=0.58; 95% CI, 0.34-0.82) and intermodality agreement (consensus reading of MRA versus DSA findings) was excellent (κ=0.94; 95% CI, 0.84-1.00) and good (κ=0.72; 95% CI, 0.51-0.93), respectively. With respect to the dural attachment of meningiomas, interobserver agreement was very good (κ=0.95; 95% CI, 0.84-1.00). The agreement in the diagnosis between MR imaging/MRA and surgery was excellent (κ=1.00). CONCLUSIONS Unenhanced 3D TOF MRA at 3T cannot at present supplant DSA for the identification of the feeding arteries of intracranial meningiomas. This information may be useful for evaluating their dural attachment.
Collapse
Affiliation(s)
- H Uetani
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Kai Y, Park KD, Nakabo T. The incomplete history of mitochondrial lineages between two rockfishes, Sebastes longispinis and Sebastes hubbsi (Scorpaeniformes: Scorpaenidae). J Fish Biol 2012; 81:954-965. [PMID: 22880729 DOI: 10.1111/j.1095-8649.2012.03326.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The genetic divergence between two closely related rockfishes, Sebastes longispinis and Sebastes hubbsi, was inferred from both mitochondrial DNA (mtDNA) sequence variations and amplified fragment length polymorphism (AFLP) markers. The two species were placed into two distinct clades in a neighbour-joining tree based on the AFLP data, clearly indicating that they represented separate species. Although this evidence, together with a previous morphological study, revealed clear differences between the two species, no obvious clustering of haplotypes by species was detected in the minimum spanning network inferred from sequence variations in the mtDNA control region (c. 500 base pairs). In fact, the significant Φ(ST) estimates indicated only a restriction of gene flow between the two species. Uncorrected pairwise sequence differences in mtDNA between two species were small (1·8% at maximum, on the lower end of the range of control region divergence between previously studied sister species pairs), suggesting their speciation event as having been fairly recent. The incongruent results of AFLP and mtDNA phylogenies suggested incomplete lineage sorting and introgression of mtDNA in the course of the evolution of the two species. Differences in their main distributional ranges and the small level of sequence divergence in mtDNA suggests that speciation and dispersal may have been associated with glacio-eustatic sea level fluctuations between the Japanese Archipelago and the Korean Peninsula during the past 0·4 million years.
Collapse
Affiliation(s)
- Y Kai
- Maizuru Fisheries Research Station, Field Science Education and Research Centre, Kyoto University, Nagahama, Maizuru, Kyoto 625-0086, Japan.
| | | | | |
Collapse
|
34
|
Yumoto K, Iwata K, Sargent C, Kai Y, Imajyo A, Iba Y, Mio Y. Dynamic Analysis of the Relationship Between the Collapse of Blastulation and Hatching in Human Blastocysts Using Time-Lapse Cinematography. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.01.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
35
|
Nishimura S, Hirai T, Shigematsu Y, Kitajima M, Morioka M, Kai Y, Minoda R, Uetani H, Murakami R, Yamashita Y. Evaluation of brain and head and neck tumors with 4D contrast-enhanced MR angiography at 3T. AJNR Am J Neuroradiol 2012; 33:445-8. [PMID: 22116118 DOI: 10.3174/ajnr.a2819] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Systematic assessment of brain and head and neck tumors with 4D-CE-MRA at 3T has not been investigated. The purpose of this study was to test the hypothesis that 4D-CE-MRA at 3T can replace DSA in the identification of feeding arteries and tumor stain to plan interventional procedures in hypervascular brain and head and neck tumors. MATERIALS AND METHODS Fifteen consecutive patients with brain and head and neck tumors underwent 4D-CE-MRA at 3T and DSA. 4D-CE-MRA combined randomly segmented central k-space ordering, keyhole imaging, SENSE, and half-Fourier imaging. We obtained 30 dynamic scans every 1.9 seconds at an acquired spatial resolution of 0.9 × 0.9 × 1.5 mm; the matrix was 256 × 256. Two independent observers inspected the 4D-CE-MRA images for the main arterial feeders and tumor stain. Interobserver and intermodality agreement was assessed by κ statistics. RESULTS For 4D-CE-MRA, the interobserver agreement was fair with respect to the main arterial feeders and very good for the degree of tumor stain (κ = 0.28 and 0.87, respectively). Intermodality agreement was moderate for the main arterial feeders (κ = 0.45) and good for the tumor stain (κ = 0.74). CONCLUSIONS Although 4D-CE-MRA may be useful for evaluating tumor stain in hypervascular brain and head and neck tumors, it is not able to replace DSA in planning interventional procedures.
Collapse
Affiliation(s)
- S Nishimura
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Kai Y, Iwata K, Sargent C, Imajo A, Yumoto K, Iba Y, Mio Y. Analysis of the Dynamic Process of Sperm Penetration of the Human Oocyte Using Time-Lapse Cinematography. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.01.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
37
|
Furia GU, Kostelijk EH, Vergouw CG, Lee H, Lee S, Park D, Kang H, Lim C, Yang K, Lee S, Lim C, Park Y, Shin M, Yang K, Lee H, Beyhan Z, Fisch JD, Sher G, Keskintepe L, VerMilyea MD, Anthony JT, Graham JR, Tucker MJ, Tucker MJ, Freour T, Lattes S, Lammers J, Mansour W, Jean M, Barriere P, El Danasouri I, Gagsteiger F, Rinaldi L, Selman H, Antonova I, Milachich T, Valkova L, Shterev A, Barcroft J, Dayoub N, Thong J, Abdel Reda H, Khalaf Y, El Touky T, Cabry R, Brzakowski R, Lourdel E, Brasseur F, Copin H, Merviel P, Yamada M, Takanashi K, Hamatani T, Akutsu H, Fukunaga T, Inoue O, Ogawa S, Sugawara K, Okumura N, Chikazawa N, Kuji N, Umezawa A, Tomita M, Yoshimura Y, Van der Jeught M, Ghimire S, O'Leary T, Lierman S, Deforce D, Chuva de Sousa Lopes S, Heindryckx B, De Sutter P, Herrero J, Tejera A, De los Santos MJ, Castello D, Romero JL, Meseguer M, Barriere P, Lammers J, Lattes S, Leperlier F, Mirallie S, Jean M, Freour T, Schats R, Al-Nofal M, Vergouw CG, Lens JW, Rooth H, Kostelijk EH, Hompes PG, Lambalk CB, Hreinsson J, Karlstrom PO, Wanggren K, Lundqvist M, Vahabi Z, Eftekhari-Yazdi P, Dalman A, Ebrahimi B, Daneshzadeh MT, Rajabpour Niknam M, Choi EG, Rho YH, Oh DS, Park LS, Cheon HS, Lee CS, Kong IK, Lee SC, Liebenthron J, Montag M, Koster M, Toth B, Reinsberg J, van der Ven H, Strowitzki T, Morita H, Hirosawa T, Watanabe S, Wada T, Kamihata M, Kuwahata A, Ochi M, Horiuchi T, Fatemeh H, Eftekhari-Yazdi P, Karimian L, Fazel M, Fouladi H, Johansson L, Ruttanajit T, Chanchamroen S, Sopaboon P, Seweewanlop S, Sawakwongpra K, Jindasri P, Jantanalapruek T, Charoonchip K, Vajta G, Quangkananurug W, Yi G, Jo JW, Jee BC, Suh CS, Kim SH, Zhang Y, Zhao HJ, Cui YG, Gao C, Gao LL, Liu JY, Sozen E, Buluc B, Vicdan K, Akarsu C, Tuncay G, Hambiliki F, Bungum M, Agapitou K, Makrakis E, Liarmakopoulou S, Anagnostopoulou C, Moustakarias T, Giannaris D, Wang J, Andonov M, Linara E, Charleson C, Ahuja KK, Ozsoy S, Morris MB, Day ML, Cobo A, Castello D, Viloria T, Campos P, Vallejo B, Remohi J, Roldan M, Perez-Cano I, Cruz M, Martinez M, Gadea B, Munoz M, Garrido N, Meseguer M, Mesut N, Ciray HN, Mesut A, Isler A, Bahceci M, Munoz M, Fortuno S, Legidos V, Muela L, Roldan M, Galindo N, Cruz M, Meseguer M, Gunasheela S, Gunasheela D, Ueno S, Uchiyama K, Kondo M, Ito M, Kato K, Takehara Y, Kato O, Edgar DH, Krapez JA, Bacer Kermavner L, Virant-Klun I, Pinter B, Tomazevic T, Vrtacnik-Bokal E, Lee SG, Kang SM, Lee SW, Jeong HJ, Lee YC, Lim JH, Bochev I, Valkova L, Kyurkchiev S, Shterev A, Wilding M, Coppola G, Di Matteo L, Dale B, Hormann-Kropfl M, Kastelic D, Montag M, Schenk M, Fourati Ben Mustapha S, Khrouf M, Braham M, Kallel L, Elloumi H, Merdassi G, Chaker A, Ben Meftah M, Zhioua F, Zhioua A, Kocent J, Neri QV, Rosenwaks Z, Palermo GD, Best L, Campbell A, Fishel S, Calimlioglu N, Sahin G, Akdogan A, Susamci T, Bilgin M, Goker ENT, Tavmergen E, Cantatore C, Ding J, Depalo R, Smith GD, Kasapi E, Panagiotidis Y, Papatheodorou A, Goudakou M, Pasadaki T, Nikolettos N, Asimakopoulos B, Prapas Y, Soydan E, Gulebenzer G, Karatekelioglu E, Budak E, Pehlivan Budak T, Alegretti J, Cuzzi J, Negrao PM, Moraes MP, Bueno MB, Serafini P, Motta ELA, Elaimi A, Harper JC, Stecher A, Baborova P, Wirleitner B, Schwerda D, Vanderzwalmen P, Zech NH, Stanic P, Hlavati V, Gelo N, Pavicic-Baldani D, Sprem-Goldstajn M, Radakovic B, Kasum M, Strelec M, Simunic V, Vrcic H, Khan I, Urich M, Abozaid T, Ullah K, Abuzeid M, Fakih M, Shamma N, Ayers J, Ashraf M, Milik S, Pirkevi C, Atayurt Z, Yazici S, Yelke H, Kahraman S, Dal Canto M, Coticchio G, Brambillasca F, Mignini Renzini M, Novara P, Maragno L, Karagouga G, De Ponti E, Fadini R, Resta S, Magli MC, Cavallini G, Muzzonigro F, Ferraretti AP, Gianaroli L, Barberi M, Orlando G, Sciajno R, Serrao L, Fava L, Preti S, Bonu MA, Borini A, Varras M, Polonifi A, Mantzourani M, Mavrogianni D, Stefanidis K, Griva T, Bletsa R, Dinopoulou V, Drakakis P, Loutradis D, Campbell A, Hickman CFL, Duffy S, Bowman N, Gardner K, Fishel S, Sati L, Zeiss C, Demir R, McGrath J, Yelke H, Atayurt Z, Yildiz S, Unal S, Kumtepe Y, Kahraman S, Atayurt Z, Yelke H, Unal S, Kumtepe Y, Kahraman S, Aljaser F, Hernandez J, Tomlinson M, Campbell B, Fosas N, Redondo Ania M, Marina F, Molfino F, Martin P, Perez N, Carrasco A, Garcia N, Gonzalez S, Marina S, Redondo Ania M, Marina F, Molfino F, Fosas N, Martin P, Perez N, Carrasco A, Garcia N, Gonzalez S, Marina S, Scaruffi P, Stigliani S, Tonini GP, Venturini PL, Anserini P, Guglielmo MC, Coticchio G, Albertini DF, Dal Canto M, Brambillasca F, Lain M, Caliari I, Mignini Renzini M, Fadini R, Oikonomou Z, Chatzimeletiou K, Sioga A, Oikonomou L, Kolibianakis E, Tarlatzis B, Nottola SA, Bianchi V, Lorenzo C, Maione M, Macchiarelli G, Borini A, Gomez E, Gil MA, Sanchez-Osorio J, Maside C, Martinez MJ, Torres I, Rodenas C, Cuello C, Parrilla I, Molina G, Garcia A, Margineda J, Navarro S, Roca J, Martinez EA, Avcil F, Ozden H, Candan ZN, Uslu H, Karaman Y, Gioacchini G, Giorgini E, Carnevali O, Bianchi V, Ferraris P, Vaccari L, Borini A, Choe S, Tae J, Kim C, Lee J, Hwang D, Kim K, Suh C, Jee B, Ozden H, Candan ZN, Avcil F, Uslu H, Karaman Y, Catt SL, Sorenson H, Vela M, Duric V, Chen P, Temple-Smith PD, Pangestu M, Yoshimura T, Fukunaga N, Nagai R, Kitasaka H, Tamura F, Hasegawa N, Kato M, Nakayama K, Takeuchi M, Aoyagi N, Yasue K, Watanabe H, Asano E, Hashiba Y, Asada Y, Iwata K, Yumoto K, Mizoguchi C, Sargent H, Kai Y, Ueda M, Tsuchie Y, Imajo A, Iba Y, Mio Y, Els-Smit CL, Botha MH, Sousa M, Windt-De Beer M, Kruger TF, Muller N, Magli C, Corani G, Giusti A, Castelletti E, Gambardella L, Gianaroli L, Seshadri S, Sunkara SK, El-Toukhy T, Kishi I, Maruyama T, Ohishi M, Akiba Y, Asada H, Konishi Y, Nakano M, Kamei K, Yoshimura Y, Lee JH, Lee KH, Park IH, Sun HG, Kim SG, Kim YY, Choi EM, Lee DH, Chavez SL, Loewke KE, Behr B, Han J, Moussavi F, Reijo Pera RA, Yokota H, Yokota Y, Yokota M, Sato S, Nakagawa M, Sato M, Anazawa I, Araki Y, Virant-Klun I, Knez K, Pozlep B, Tomazevic T, Vrtacnik-Bokal E, Lim JH, Vermilyea MD, Graham JR, Levy MJ, Tucker MJ, Carvalho M, Cordeiro I, Leal F, Aguiar A, Nunes J, Rodrigues C, Soares AP, Sousa S, Calhaz-Jorge C, Braga DPAF, Setti AS, Figueira RCS, Aoki T, Iaconelli A, Borges E, Ozkavukcu S, Sonmezer M, Atabekoglu C, Berker B, Ozmen B, Isbacar S, Ibis E, Menezes J, Lalitkumar PGL, Borg P, Ekwurtzel E, Nordqvist S, Vaegter K, Tristen C, Sjoblom P, Azevedo MC, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Remohi Gimenez J, Cobo A, Castello D, Gamiz P, Albert C, Ferreira RC, Braga DPAF, Figueira RCS, Setti AS, Resende S, Iaconelli A, Borges E, Colturato SS, Braga DPAF, Figueira RCS, Setti AS, Resende S, Iaconelli A, Borges E, Ferrer Buitrago M, Ferrer Robles E, Munoz Soriano P, Ruiz-Jorro M, Calatayud Lliso C, Rawe VY, Wanggren K, Hanrieder J, Hambiliki F, Gulen-Yaldir F, Bergquist J, Stavreus-Evers A, Hreinsson J, Grunskis A, Bazarova A, Dundure I, Fodina V, Brikune J, Lakutins J, Pribenszky C, Cornea M, Reichart A, Uhereczky G, Losonczy E, Ficsor L, Lang Z, Ohgi S, Nakamura C, Hagiwara C, Kawashima M, Yanaihara A, Jones GM, Biba M, Kokkali G, Vaxevanoglou T, Chronopoulou M, Petroutsou K, Sfakianoudis K, Pantos K, Perez-Cano I, Gadea B, Martinez M, Muela L, Cruz M, Galindo N, Munoz M, Garrido N, Romano S, Albricci L, Stoppa M, Cerza C, Sanges F, Fusco S, Capalbo A, Maggiulli R, Ubaldi F, Rienzi L, Ulrick J, Kilani S, Chapman M, Losada C, Ortega I, Pacheco A, Bronet F, Aguilar J, Ojeda M, Taboas E, Perez M, Munoz E, Pellicer A, Meseguer M, Boumela I, Assou S, Haouzi D, Monzo C, Dechaud H, Hamamah S, Dechaud H, Boumela I, Assou S, Haouzi D, Monzo C, Hamamah S, Nakaoka Y, Hashimoto S, Amo A, Yamagata K, Nakano T, Akamatsu Y, Mezawa T, Ohnishi Y, Himeno T, Inoue T, Ito K, Morimoto Y. EMBRYOLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.77] [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: 11/13/2022] Open
|
38
|
Bluml S, Panigrahy A, Laskov M, Dhall G, Nelson MD, Finlay JL, Gilles FH, Arita H, Kinoshita M, Kagawa N, Fujimoto Y, Hashimoto N, Yoshimine T, Kinoshita M, Arita H, Kagawa N, Fujimoto Y, Hashimoto N, Yoshimine T, Hamilton JD, Wang J, Levin VA, Hou P, Loghin ME, Gilbert MR, Leeds NE, deGroot JF, Puduvalli V, Jackson EF, Yung WKA, Kumar AJ, Ellingson BM, Cloughesy TF, Pope WB, Zaw T, Phillips H, Lalezari S, Nghiemphu PL, Ibrahim H, Motevalibashinaeini K, Lai A, Ellingson BM, Cloughesy TF, Zaw T, Harris R, Lalezari S, Nghiemphu PL, Motevalibashinaeini K, Lai A, Pope WB, Douw L, Van de Nieuwenhuijzen ME, Heimans JJ, Baayen JC, Stam CJ, Reijneveld JC, Juhasz C, Mittal S, Altinok D, Robinette NL, Muzik O, Chakraborty PK, Barger GR, Ellingson BM, Cloughesy TF, Zaw TM, Lalezari S, Nghiemphu PL, Motevalibashinaeini K, Lai A, Goldin J, Pope WB, Ellingson BM, Cloughesy TF, Harris R, Pope WB, Nghiemphu PL, Lai A, Zaw T, Chen W, Ahlman MA, Giglio P, Kaufmann TJ, Anderson SK, Jaeckle KA, Uhm JH, Northfelt DW, Flynn PJ, Buckner JC, Galanis E, Zalatimo O, Weston C, Allison D, Bota D, Kesari S, Glantz M, Sheehan J, Harbaugh RE, Chiba Y, Kinoshita M, Kagawa N, Fujimoto Y, Tsuboi A, Hatazawa J, Sugiyama H, Hashimoto N, Yoshimine T, Nariai T, Toyohara J, Tanaka Y, Inaji M, Aoyagi M, Yamamoto M, Ishiwara K, Ohno K, Jalilian L, Essock-Burns E, Cha S, Chang S, Prados M, Butowski N, Nelson S, Kawahara Y, Nakada M, Hayashi Y, Kai Y, Hayashi Y, Uchiyama N, Kuratsu JI, Hamada JI, Yeom K, Rosenberg J, Andre JB, Fisher PG, Edwards MS, Barnes PD, Partap S, Essock-Burns E, Jalilian L, Lupo JM, Crane JC, Cha S, Chang SM, Nelson SJ, Romanowski CA, Hoggard N, Jellinek DA, Clenton S, McKevitt F, Wharton S, Craven I, Buller A, Waddle C, Bigley J, Wilkinson ID, Metherall P, Eckel LJ, Keating GF, Wetjen NM, Giannini C, Wetmore C, Jain R, Narang J, Arbab AS, Schultz L, Scarpace L, Mikkelsen T, Babajni-Feremi A, Jain R, Poisson L, Narang J, Scarpace L, Gutman D, Jaffe C, Saltz J, Flanders A, Daniel B, Mikkelsen T, Zach L, Guez D, Last D, Daniels D, Hoffman C, Mardor Y, Guha-Thakurta N, Debnam JM, Kotsarini C, Wilkinson ID, Jellinek D, Griffiths PD, Khandanpour N, Hoggard N, Kotsarini C, Wilkinson ID, Jellinek D, Griffiths PD, Bambrough P, Hoggard N, Hamilton JD, Levin VA, Hou P, Prabhu S, Loghin ME, Gilbert MR, Bassett RL, Wang J, Yung WA, Jackson EF, Kumar AJ, Campen CJ, Soman S, Fisher PG, Edwards MS, Yeom KW, Vos MJ, Berkhof J, Postma TJ, Sanchez E, Sizoo EM, Heimans JJ, Lagerwaard FJ, Buter J, Noske DP, Reijneveld JC, Colen RR, Mahajan B, Jolesz FA, Zinn PO, Lupo JM, Molinaro A, Chang S, Lawton K, Cha S, Nelson SJ, Alexandru D, Bota D, Linskey ME, Chaumeil MM, Gini B, Yang H, Iwanami A, Subramanian S, Ozawa T, Read EJ, Pieper RO, Mischel P, James CD, Ronen SM, LaViolette PS, Cochran E, Al-Gizawiy M, Connelly JM, Malkin MG, Rand SD, Mueller WM, Schmainda KM, LaViolette PS, Cohen AD, Cochran E, Prah M, Hartman CJ, Connelly JM, Rand SD, Malkin MG, Mueller WM, Schmainda KM, Qiao XJ, He R, Brown M, Goldin J, Cloughesy T, Pope WB. RADIOLOGY. Neuro Oncol 2011; 13:iii136-iii144. [PMCID: PMC3222969 DOI: 10.1093/neuonc/nor162] [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: 10/10/2023] Open
|
39
|
|
40
|
|
41
|
Shibata N, Inoue T, Higuchi Y, Kai Y. Primer design for cDNA synthesis based on the crystal structure. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311085102] [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: 11/10/2022] Open
|
42
|
Onishi H, Matsutake Y, Matsutomo N, Kai Y, Amijima H. Effect of Prefiltering Cutoff Frequency and Scatter and Attenuation Corrections During Normal Database Creation for Statistical Imaging Analysis of the Brain. J Nucl Med Technol 2011; 39:231-6. [DOI: 10.2967/jnmt.110.079871] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
43
|
Hamada A, Sasaki J, Saeki S, Iwamoto N, Inaba M, Ushijima S, Kishi H, Fujii S, Semba H, Kashiwabara K, Tsubata Y, Kai Y, Isobe T, Kohrogi H, Saito H. Metabolic profiles as predictive biomarkers of erlotinib-induced adverse effects in patients with non-small cell lung cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.2593] [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: 11/20/2022] Open
|
44
|
Kameoka S, Matsumoto K, Kai Y, Yonehara Y, Arai Y, Honda K. Establishment of temporomandibular joint puncture technique in rats using in vivo micro-computed tomography (R_mCT®). Dentomaxillofac Radiol 2010; 39:441-5. [PMID: 20841463 DOI: 10.1259/dmfr/37174063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The aim of the report was to establish puncture techniques for the temporomandibular joint (TMJ) cavity in rats. The experimental sample comprised 30 male Sprague-Dawley rats. Under general anaesthesia the superior joint cavity of the rat was punctured either laterally (lateral puncture technique (LPT), n = 11), anteriorly (anterosuperior puncture technique (ASPT), n = 13) or anteroinferior puncture technique (AIPT), n = 6) using a 27-gauge needle. After the tip of the needle was confirmed by micro-CT (R-mCT®, Rigaku, Tokyo, Japan) located on the mandibular fossa, 0.05 ml of contrast media was injected under micro-CT fluoroscopic guidance. After confirmation that the joint cavity was filled with contrast media, micro-CT imaging was carried out. The puncture for LPT was accurate in 5 of the 11 animals. The ASPT was accurate in all 13 animals. The AIPT punctured 3 of the 6 animals. Furthermore, the ASPT and AIPT demonstrated improved preservation of the needle; it was harder to detach the needle, which led to greater stability. These results suggest that ASPT assisted by R-mCT® is useful for basic research, including drug discovery and pathogenesis of TMJ diseases.
Collapse
Affiliation(s)
- S Kameoka
- Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310. Japan
| | | | | | | | | | | |
Collapse
|
45
|
Nishimura S, Hirai T, Sasao A, Kitajima M, Morioka M, Kai Y, Omori Y, Okuda T, Murakami R, Fukuoka H, Awai K, Kuratsu JI, Yamashita Y. Evaluation of dural arteriovenous fistulas with 4D contrast-enhanced MR angiography at 3T. AJNR Am J Neuroradiol 2009; 31:80-5. [PMID: 19833802 DOI: 10.3174/ajnr.a1898] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Four-dimensional contrast-enhanced MR angiography (4D-CE-MRA) at 3T may replace digital subtraction angiography (DSA) for certain diagnostic purposes in patients with intracranial dural arteriovenous fistula (DAVF). The aim of this study was to test the hypothesis that 4D-CE-MRA at 3T enables the same characterization of intracranial DAVFs as DSA. MATERIALS AND METHODS The study population consisted of 18 consecutive patients with intracranial DAVFs (11 women, 7 men; age range, 35-82 years; mean age, 64.8 years). They underwent 4D-CE-MRA at 3T and DSA. The 4D-CE-MRA series combined randomly segmented central k-space ordering, keyhole imaging, sensitivity encoding, and half-Fourier imaging. We obtained 30 dynamic scans every 1.9 seconds with a spatial resolution of 1 x 1 x 1.5 mm. Two independent readers reviewed the 4D-CE-MRA images for main arterial feeders, fistula site, and venous drainage. Interobserver and intermodality agreement was assessed by kappa statistics. RESULTS At DSA, 8 fistulas were located at the transverse sigmoid sinus; 8, at the cavernous sinus; and 2, at the sinus adjacent to the foramen magnum. Interobserver agreement was fair for the main arterial feeders (kappa = 0.59), excellent for the fistula site (kappa = 0.91), and good for venous drainage (kappa = 0.86). Intermodality agreement was moderate for the main arterial feeders (kappa = 0.68) and excellent for the fistula site (kappa = 1.0) and venous drainage (kappa = 1.0). CONCLUSIONS The agreement between 4D-CE-MRA and DSA findings was good to excellent with respect to the fistula site and venous drainage.
Collapse
Affiliation(s)
- S Nishimura
- Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Rai Y, Tanaka M, Mitsuyama M, Uga T, Tanaka S, Nanba K, Furusawa H, Murata K, Nishimura R, Oikawa T, Kamada Y, Maeda S, Maeda J, Honjyo S, Iwase H, Yamamoto Y, Masuno K, Shibuta K, Kai Y, Taniguchi H, Yahara T, Yokoyama G, Yoshinaga Y, Umeda S, Hisamatsu K, Tamura K. 0142 Feasibility study of fluorouracil/epirubicin/cyclophosphamide (FEC75) followed by docetaxel (DOC) as adjuvant chemotherapy in Japanese patients with node positive breast cancer. Breast 2009. [DOI: 10.1016/s0960-9776(09)70173-0] [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: 10/20/2022] Open
|
47
|
Maeda T, Matsumura H, Tamura H, Kobayashi D, Tamoi M, Iwaki T, Shigeoka S, Wadano A, Inoue T, Kai Y. Crystallization and preliminary X-ray analysis of phosphoribulokinase from Synechococcussp. PCC 7942 cycle. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308091265] [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: 11/10/2022] Open
|
48
|
Konishi S, Tokuoka K, Kusakari Y, Krungkrai S, Matsumura H, Kai Y, Krungkrai J, Horii T, Inoue T. Structural basis for the enzymes in de novopathway of human malaria parasite Plasmodium falciparum. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730809106x] [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: 11/10/2022] Open
|
49
|
Yoshikawa N, Yamabe S, Kanehisa N, Kai Y, Takashima H, Tsukahara K. Syntheses, characterization and DFT investigations of iridium complexes and diprotonated terpyridines. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308087060] [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: 11/10/2022] Open
|
50
|
Matoba K, Tanazawa Y, Inoue T, Matsumura H, Kai Y, Kamei K, Harada S. Crystal structures of alkaline protease from Pseudomonas aeruginosacomplexed with peptides. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308091848] [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: 11/10/2022] Open
|