1
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Ibusuki A, Kawai K, Nitahara-Takeuchi A, Argüello RJ, Kanekura T. TCR signaling and cellular metabolism regulate the capacity of murine epidermal γδ T cells to rapidly produce IL-13 but not IFN-γ. Front Immunol 2024; 15:1361139. [PMID: 38482017 PMCID: PMC10933099 DOI: 10.3389/fimmu.2024.1361139] [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: 12/25/2023] [Accepted: 02/08/2024] [Indexed: 04/17/2024] Open
Abstract
Resident epidermal T cells of murine skin, called dendritic epidermal T cells (DETCs), express an invariant γδ TCR that recognizes an unidentified self-ligand expressed on epidermal keratinocytes. Although their fetal thymic precursors are preprogrammed to produce IFN-γ, DETCs in the adult epidermis rapidly produce IL-13 but not IFN-γ early after activation. Here, we show that preprogrammed IFN-γ-producing DETC precursors differentiate into rapid IL-13 producers in the perinatal epidermis. The addition of various inhibitors of signaling pathways downstream of TCR to the in vitro differentiation model of neonatal DETCs revealed that TCR signaling through the p38 MAPK pathway is essential for the functional differentiation of neonatal DETCs. Constitutive TCR signaling at steady state was also shown to be needed for the maintenance of the rapid IL-13-producing capacity of adult DETCs because in vivo treatment with the p38 MAPK inhibitor decreased adult DETCs with the rapid IL-13-producing capacity. Adult DETCs under steady-state conditions had lower glycolytic capacity than proliferating neonatal DETCs. TCR stimulation of adult DETCs induced high glycolytic capacity and IFN-γ production during the late phase of activation. Inhibition of glycolysis decreased IFN-γ but not IL-13 production by adult DETCs during the late phase of activation. These results demonstrate that TCR signaling promotes the differentiation of IL-13-producing DETCs in the perinatal epidermis and is needed for maintaining the rapid IL-13-producing capacity of adult DETCs. The low glycolytic capacity of adult DETCs at steady state also regulates the rapid IL-13 response and delayed IFN-γ production after activation.
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Affiliation(s)
- Atsuko Ibusuki
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
- Department of Dermatology, Kido Hospital, Niigata, Japan
| | - Ayano Nitahara-Takeuchi
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Rafael J. Argüello
- Aix Marseille Université, CNRS, INSERM, CIML, Centre d’Immunologie de Marseille-Luminy, Marseille, France
| | - Takuro Kanekura
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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2
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Terao K, Kawai K, Takei I. Nodular amyloidosis presenting as multiple thin yellow plaques on the back. J Dermatol 2024; 51:e19-e21. [PMID: 37680083 DOI: 10.1111/1346-8138.16958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/09/2023]
Affiliation(s)
- Kana Terao
- Department of Dermatology, Kido Hospital, Niigata, Japan
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
| | - Izumi Takei
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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3
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Watanabe A, Murakami H, Kakinuma S, Murao K, Oomae K, Akamatsu H, Seto T, Shinozuka Y, Kawai K. Predicting an increased risk of severe clinical mastitis and economic loss using a threshold value of bovine leukemia virus proviral load. Am J Vet Res 2023:1-9. [PMID: 38150823 DOI: 10.2460/ajvr.23.09.0198] [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: 09/22/2023] [Accepted: 12/11/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVE To establish a threshold value of bovine leukemia virus (BLV) proviral load (PVL) to identify increased risk of severe clinical mastitis, and to examine the prognosis and economic loss of clinical mastitis based on the newly established PVL cut-off value. ANIMALS 97 lactating Holstein cows with clinical mastitis. METHODS Blood and milk samples were collected aseptically from each cow. Youden index was used for receiver-operating characteristic curve analysis with the severity rate of clinical mastitis as the dependent variable and PVL as an independent variable. PVL cut-off value was used as a criterion to compare the severity rate of clinical mastitis, percentage of cows with and without systemic treatments, number of treatments, cost of treatment, and prognosis. RESULTS PVL cut-off value was 17.8 copies/10 ng DNA for the dependent variable MILD vs SEVERE. The severity rate of clinical mastitis, percentage of cows given systemic treatments, and technical fees for medical treatment were significantly higher in the group above the PVL cut-off value than in the group below the PVL cut-off value and the negative group. Number of treatments was significantly higher in the group above the cut-off value than in the group below the cut-off value. There was no significant difference in prognosis after mastitis among the 3 groups. CLINICAL RELEVANCE These results suggested that PVL cut-off value of 17.8 copies/10 ng DNA was a useful threshold for increased economic losses in BLV-infected cows; it may also serve as a new standard value for the detection and culling of BLV-infected cows in Japan.
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Affiliation(s)
- Aiko Watanabe
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan
- Kakinuma Veterinary Hospital, Honjou, Japan
| | | | | | - Koki Murao
- Kakinuma Veterinary Hospital, Honjou, Japan
| | | | | | - Takahiro Seto
- Shizuoka Prefecture Livestock Research Institute, Fujinomiya, Japan
| | | | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan
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4
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Takei I, Kawai K, Yamazaki M. Kikuchi‐Fujimoto disease presenting with papular lesions on the elbows and knees. J Cutaneous Imm & Allergy 2023. [DOI: 10.1002/cia2.12300] [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: 03/12/2023] Open
Affiliation(s)
- Izumi Takei
- Department of Dermatology Kido Hospital Niigata Japan
- Division of Dermatology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | | | - Mihoko Yamazaki
- Department of Nephrology and Rheumatology Kido Hospital Niigata Japan
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5
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Hayashi M, Shinozuka Y, Kurumisawa T, Yagisawa T, Suenaga N, Shimizu Y, Suzuki N, Kawai K. Effects of Intramammary Antimicrobial Treatment on the Milk Microbiota Composition in Mild Clinical Bovine Mastitis Caused by Gram-Positive Bacteria. Animals (Basel) 2023; 13:ani13040713. [PMID: 36830498 PMCID: PMC9952509 DOI: 10.3390/ani13040713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/19/2023] Open
Abstract
The purpose of this study was to clarify the effects of antimicrobial treatment for mild mastitis caused by Gram-positive bacteria on the milk microbiota in dairy cattle. Sixteen quarters of sixteen cows with mild clinical mastitis from the same herd were included in the study. On the day of onset (day 0), the cows were randomly allocated to a no-treatment (NT; n = 10) group or an intramammary antimicrobial treatment (AMT) group that received AMT starting on day 0 (AMT-AMT group; n = 6). The next day (day 1), the cows in the NT group were randomly allocated into an NT group (NT-NT group; n = 3) that received no treatment or an AMT group that received AMT starting on day 1 (NT-AMT group; n = 7). Milk samples were collected on days 0, 1, 3 and 7, and the milk microbiota of each sample was comprehensively analyzed via 16S rRNA gene amplicon sequencing of the milk DNA. During the treatment period, the milk microbiota of the NT-NT group did not change, but those of the NT-AMT and AMT-AMT groups changed significantly on days three and seven. Thus, the use of antimicrobials for mild mastitis caused by Gram-positive bacteria changes the milk microbiota composition.
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Affiliation(s)
- Mayu Hayashi
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
- Mastitis Research Center, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
- Correspondence: ; Tel./Fax: +81-42-769-1641
| | - Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
| | - Takuya Yagisawa
- Hokkaido Agriculture Mutual Aid Association, 4-1-1, Sapporo 060-0004, Japan
| | - Nagomu Suenaga
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
| | - Yuko Shimizu
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
| | - Naoki Suzuki
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima 739-8528, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
- Mastitis Research Center, Azabu University, 1-17-71 Fuchinobe, Sagamihara 252-5201, Japan
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6
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Kawai K, Kurumisawa T, Shinozuka Y, Higuchi H, Iwano H, Hayashi T, Ozawa M, Koike R, Uchiyama M. Antimicrobial susceptibility of bovine clinical mastitis pathogens in Japan and development of a simplified agar disk diffusion method for clinical practice. J Vet Med Sci 2023; 85:143-148. [PMID: 36543185 PMCID: PMC10017299 DOI: 10.1292/jvms.21-0450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
This study aimed to examine the antimicrobial susceptibility of bovine mastitis pathogens in Japan and develop criteria for testing antimicrobial susceptibility using the simplified agar disk diffusion (ADD) method that is currently being used in clinical practice. Milk samples from 1,349 dairy cows with clinical mastitis were collected and cultured. The minimum inhibitory concentrations (MICs) of the antimicrobials were determined for 504 strains of 28 bacteria. Of the gram-positive bacteria, most Staphylococcus spp. were susceptible to penicillin G (PCG), kanamycin (KM), oxytetracycline (OTC), cefazolin (CEZ), pirlimycin, enrofloxacin, and marbofloxacin. Streptococcus spp. and Trueperella pyogenes showed resistance to OTC and KM. Most gram-negative bacteria were resistant to OTC and CEZ and particularly susceptible to fluoroquinolones. To develop the criteria for a disk diffusion test of the simplified ADD method, the relationships between MICs and diameters of inhibition zones (DIZs) were analyzed and compared with the conventional method. The susceptibility breakpoints of several antimicrobials were lower for both gram-positive and gram-negative bacteria. Particularly for gram-positive bacteria, the application of the new criteria lowers the breakpoint for PCG, suggesting that the use of PCG instead of CEZ may increase. The results suggest that use of these criteria for the simplified ADD method may lead to appropriate antimicrobial choice and consequently the appropriate use of antimicrobials in clinical practice.
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Affiliation(s)
- Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Azabu University Mastitis Research Center, Kanagawa, Japan
| | - Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Azabu University Mastitis Research Center, Kanagawa, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Azabu University Mastitis Research Center, Kanagawa, Japan
| | - Hidetoshi Higuchi
- School of Veterinary Medicine, Rakuno Gakuen University, Hokkaido, Japan
| | - Hidetomo Iwano
- School of Veterinary Medicine, Rakuno Gakuen University, Hokkaido, Japan
| | - Tomohito Hayashi
- National Institute of Animal Health, National Agriculture and Food Research Organization, Hokkaido, Japan
| | - Manao Ozawa
- National Veterinary Assay Laboratory, Ministry of Agriculture Forestry and Fisheries, Tokyo, Japan
| | - Ryoji Koike
- National Veterinary Assay Laboratory, Ministry of Agriculture Forestry and Fisheries, Tokyo, Japan
| | - Mariko Uchiyama
- National Veterinary Assay Laboratory, Ministry of Agriculture Forestry and Fisheries, Tokyo, Japan
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7
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Kurumisawa T, Yagisawa T, Shinozuka Y, Kawai K. Effect of glycyrrhizin administration followed by symptom-based antimicrobial selection therapy on antimicrobial use in clinical mastitis without systemic symptoms. J Vet Med Sci 2022; 84:1265-1271. [PMID: 35851331 PMCID: PMC9523304 DOI: 10.1292/jvms.22-0108] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
In bovine mastitis, antimicrobial treatment is often initiated before the causative organism is identified a problem in the prudent use of antimicrobials. In this study, we aimed to reduce
the total amount of antimicrobials used in mastitis treatment by administering glycyrrhizin, an anti-inflammatory drug, instead of antimicrobials at the onset of clinical mastitis without
systemic symptoms, followed by symptom-based antimicrobial selection therapy (ST), to examine the effect of this treatment strategy on treatment outcomes and antimicrobial use. Comparisons
between cases that received antimicrobial treatment starting from the day of diagnosis (blanket antibiotic therapy [BT] group: 33 cases) and cases that received ST starting from the day
after the diagnosis (ST group: 57 cases) revealed no difference in the cure rate, milk withholding period, or recurrence rate. However, the ST group had a significantly lower amount of
antimicrobials than the BT group. Additionally, a single administration of glycyrrhizin before ST significantly relieved the udder symptoms and reduced the antimicrobial amount when compared
with cases without glycyrrhizin administration. Thus, a single administration of glycyrrhizin followed by ST can reduce the total antimicrobial use.
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Affiliation(s)
- Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University.,Azabu University Mastitis Research Center
| | - Takuya Yagisawa
- Biei Livestock Veterinary Clinic, Hokkaido Chuo Agriculture Mutual Aid Association
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University.,Azabu University Mastitis Research Center
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University.,Azabu University Mastitis Research Center
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8
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Komiya A, Kawai K, Sujino T, Iijima M, Tsukamoto S, Kato M, Tajima M, Takayanagi Y, Nako Y, Hiraoka K, Uchida N, Ishikawa S, Ichikawa T. O-015 Results of urological consultation in the setting of IVF clinic. Hum Reprod 2022. [DOI: 10.1093/humrep/deac104.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Study question
In the management of male infertility, we investigated whether urological consultation could improve the live birth rate, and who should visit urologists in the setting of IVF clinic.
Summary answer
Urologic consultation resulted in improvement of semen quality and live birth rate with more IVF use in those with adverse semen parameters.
What is known already
Male factor infertility exists in about a half of infertility couples. This accounts for about 8% in male reproductive age. Therefore, ideally every male partner of infertility couples attempting conception should have a urological evaluation. However, it is not very easy to access urologists who specialized in reproductive medicine in Japan because we have very few of such urologists. One the other hand, a certain number of couples are wasting their time during IVF failure without urological evaluation.
Study design, size, duration
This is a single-institution retrospective study. We enrolled male partners of infertility couples who visited Kameda IVF clinic Makuhari, Chiba, Japan, between May 2016 and December 2020 and followed at least one year. Live birth rate and the frequency of IVF use were investigated according to semen quality and urological consultation status. Chi-square tests and T tests were used to compare the results between groups.
Participants/materials, setting, methods
Among 2225 couples who visited Kameda IVF clinic Makuhari, 803 male partners (Group A, 36.0%) were evaluated by urologists who were specialized in male reproductive medicine. Remaining 1422 patients did not (Group B, 64.0%). Lifestyle evaluation, physical examination, semen analyses, scrotal ultrasonography, blood test including sexual hormones and zinc concentration were performed in Group A. Semen analyses and lifestyle evaluation were performed in Group B. Urological treatments were done according to factors of male infertility.
Main results and the role of chance
Semen quality was worse in Group A as compared to Group B (sperm motility, 28.5±16.9% vs. 46.0±17.0%; total sperm count, 105±108 million/mL vs. 176±155; total motile sperm count, 34±49 vs.87±98; mean±S.D.; p = 0.0001, 0.0001, 0.0001, A vs. B, respectively). After urologic consultation and managements, sperm motility was improved to 34±18% (p = 0.001). Live birth rate in groups A and B were similar (56.0% vs. 57.2%), however couples who obtained a child in Group A used IVF more often than those in Group B (70% vs. 49.9%, p < 0.001). Among those with adverse semen quality (total motile sperm count less than 15.6 million/mL, n = 472), 350 visited urologists (Group 1, 74.2%) and remaining 122 did not (Group 2, 25.8%). Live birth rate in Group 1 was significantly better than in Group 2 (65.3% vs. 54.1%, p = 0.0359). Use of IVF was significantly more frequent in Group 1 than Group 2 (79.3% vs. 63.6%, p = 0.0359) among who obtained a child. In those with better semen quality (motile sperm count >50 million, n = 900), 119 visited urologist (31.1%, Group 3) and 781 did not (Group 4). Live birth rate and the use of IVF were not different between Groups 3 and 4 (51.1% vs.60.9%; 50.4% vs. 62.9%).
Limitations, reasons for caution
This study is a single-institution, retrospective study in the setting of IVF clinic. There may be a selection bias since men first visit gynecologists. These could affect the study results.
Wider implications of the findings
In the setting of IVF clinic, urologic consultation resulted in improved semen quality and better live birth rate with the use of IVF, especially in those who have adverse semen parameters. The results of this study encourage patients to see urologists and physicians to introduce urologist to patients.
Trial registration number
not applicable
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Affiliation(s)
- A Komiya
- Chiba University Hospital, Urology, Chiba-shi , Japan
| | - K Kawai
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - T Sujino
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - M Iijima
- Kanazawa University Hospital, Urology, Kanazawa-shi , Japan
| | - S Tsukamoto
- Touyu Clinic Shinmatsudo, Urology, Matsudo-shi , Japan
| | - M Kato
- Chiba University Hospital, Urology, Chiba-shi , Japan
| | - M Tajima
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - Y Takayanagi
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - Y Nako
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - K Hiraoka
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - N Uchida
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - S Ishikawa
- Kameda IVF Clinic Makuhari, Reproductive Medicine, Chiba-shi , Japan
| | - T Ichikawa
- Chiba University Hospital, Urology, Chiba-shi , Japan
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9
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Uchida N, Hiraoka K, Sujino T, Yamashita H, Ishikawa T, Kawai K. P-199 Effect of the area of oocyte perivitelline space on the fertilization and embryo development following intracytoplasmic sperm injection. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.192] [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
Study question
Does the area of oocyte perivitelline space have an effect on fertilization and embryo development following intracytoplasmic sperm injection?
Summary answer
The area of oocyte perivitelline space has not an effect on the fertilization but the embryo development following intracytoplasmic sperm injection.
What is known already
Oocyte perivitelline space has a lot of variation at intracytoplasmic sperm injection (ICSI). Some researchers reported that the characteristics of perivitelline space (large or small) affect embryo development, pregnancy, and implantation. However, these studies did not accurately calculate the area of perivitelline space. Therefore, little information is available on the effect of the area of oocyte perivitelline space on fertilization and embryo development following ICSI. The purpose of this study was to calculate and classify the area of oocyte perivitelline space and investigate the effect of the area of perivitelline space on fertilization and embryo development following ICSI.
Study design, size, duration
1. We retrospectively investigated 634 mature oocytes that were conducted ICSI between January 2021 and December 2021. The area of each oocyte perivitelline space was defined from between the area of circle calculated from the inner layer of zona pellucida and cytoplasm and divided into 3 groups (-9%, 10-19%, 20%-).
2. We retrospectively calculated the diameter of an inner layer of zona pellucida and cytoplasm and compared it with the 3 groups (-9%, 10-19%, 20%-).
Participants/materials, setting, methods
1. The fertilization, survival, good quality day-3 embryo, blastocyst, good quality blastocyst rates following ICSI were compared with the 3 groups (-9%, 10-19%, 20%-).
2. The average diameter of an inner layer of zona pellucida and cytoplasm of each oocyte for the 3 groups (-9%, 10-19%, 20%-) were compared.
The data were analyzed by Fisher’s exact test, residual analysis, one-way ANOVA test, with Bonferroni correction as appropriate to determine the statistical differences among groups.
Main results and the role of chance
1. The survival rates of perivitelline space -9%, 10-19%, 20%- groups were 100% (109/109), 96% (363/378), 94% (138/147), the fertilization rates were 89% (97/109), 88% (331/378), 86% (127/147), the good quality day-3 embryo rates were 56% (54/97), 70% (232/331), 70% (89/127) respectively. No significant difference was observed between these comparison items. The blastocyst rates of perivitelline space -9%, 10-19%, 20%- groups were 51% (47/92), 69% (222/321), 82% (93/114), the good quality blastocyst rates were 22% (20/92), 40% (129/321), 52% (59/114) respectively. The blastocyst and good quality blastocyst rates of perivitelline space -9% group showed significantly lower results. On the other hand, the blastocyst and good quality blastocyst rates of perivitelline space 20%- group showed significantly higher results.
2. The average diameter of an inner layer of zona pellucida of perivitelline space -9%, 10-19%, 20%- groups were 125 ± 4 µm, 129 ± 5 µm, 136 ± 6 µm, the average diameter of the cytoplasm of perivitelline space were 121 ± 4 µm, 119 ± 4 µm, 118 ± 4 µm respectively. Significant differences were observed in all pairs of groups of the average diameter of an inner layer of zona pellucida and cytoplasm.
Limitations, reasons for caution
The area of oocyte perivitelline space was calculated at only one plane.
Wider implications of the findings
Oocytes with narrow perivitelline space might have a wide region of adhesive between the cytoplasm surface and an inner layer of the zona pellucida which resulted in a smaller diameter of the zona pellucida and lower blastocyst rate by forming cytoplasmic fragments (Yumoto K et al. JARG. 2020 ;37(6):1349-1354.).
Trial registration number
Not Applicable
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Affiliation(s)
- N Uchida
- Kameda IVF Clinic Makuhari, ART Laboratory , Chiba, Japan
| | - K Hiraoka
- Kameda IVF Clinic Makuhari, ART Laboratory , Chiba, Japan
| | - T Sujino
- Kameda IVF Clinic Makuhari, ART Laboratory , Chiba, Japan
| | - H Yamashita
- H.U. Group Research Institute G.K., Research Laboratory , Tokyo, Japan
| | - T Ishikawa
- Tokyo Medical and Dental University, Comprehensive Reproductive Medicine , Tokyo, Japan
| | - K Kawai
- Kameda IVF Clinic Makuhari, ART Laboratory , Chiba, Japan
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10
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Uchida S, Kawai K, Tsutsui Y, Yamazaki M. Felty syndrome in a patient with undiagnosed rheumatoid arthritis presenting with multiple cutaneous abscesses. J Dermatol 2022; 49:e208-e209. [PMID: 35187709 DOI: 10.1111/1346-8138.16332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/06/2022] [Accepted: 02/08/2022] [Indexed: 12/01/2022]
Affiliation(s)
- Shota Uchida
- Department of Dermatology, Kido Hospital, Niigata, Japan.,Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
| | - Yuka Tsutsui
- Department of Dermatology, Kido Hospital, Niigata, Japan.,Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Mihoko Yamazaki
- Department of Nephrology and Rheumatology, Kido Hospital, Niigata, Japan
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11
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Kawai K. Preface to Journal of Dermatology special issue: Cutaneous lymphoma. J Dermatol 2022; 49:201. [PMID: 35106850 DOI: 10.1111/1346-8138.16284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
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12
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Shinozuka Y, Suzuki N, Kaneko S, Kawai K, Kurumisawa T, Shimizu Y, Imanishi T, Ohno A, Takahashi M, Isobe N. Regression tree analysis of the relationship between the concentrations of antimicrobial components and the microbiota of normal milk from dairy cows. J Vet Med Sci 2022; 84:310-318. [PMID: 35046240 PMCID: PMC8983300 DOI: 10.1292/jvms.21-0541] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to determine the concentrations of antimicrobial components (immunoglobulin A (IgA), lactoferrin (LF), lingual antimicrobial peptide (LAP), and S100A7) in normal milk and their relation to host factors (Age, somatic cell count (SCC), days in milk, richness, and alpha diversity of the milk microbiota) in dairy cows using multivariate regression tree analyses, and to clarify how the milk microbiota is related to the obtained results. Thirty normal milk samples were collected from a commercial dairy farm in June 2020. The thresholds that predicted the concentration of each antimicrobial component in milk were obtained by regression tree analysis, and the beta-diversity of the milk microbiota composition between groups divided according to each threshold was compared by an analysis of similarities test. The IgA and LF concentrations were mainly predicted by the SCC (177,500 and 70,000 cells/ml, respectively), and the LAP and S100A7 concentrations were predicted by Age (29.667 and 40.3 months, respectively). No relationship was observed between the concentration of IgA, LAP, or S100A7 and the milk microbiota composition between the groups divided by the threshold for prediction, but the milk microbiota composition was significantly different between the groups divided by the threshold for predicting the LF concentration. Our results indicated that the LF concentration in normal milk may be associated with the milk microbiota composition.
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Affiliation(s)
- Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University.,Azabu University Mastitis Research Center
| | - Naoki Suzuki
- Graduate School of Integrated Sciences for Life, Hiroshima University
| | | | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University.,Azabu University Mastitis Research Center
| | - Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University.,Azabu University Mastitis Research Center
| | | | - Tadashi Imanishi
- Department of Molecular Life Science, Tokai University School of Medicine
| | - Ayumu Ohno
- Department of Molecular Life Science, Tokai University School of Medicine
| | - Mano Takahashi
- Department of Molecular Life Science, Tokai University School of Medicine
| | - Naoki Isobe
- Graduate School of Integrated Sciences for Life, Hiroshima University
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13
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Suzuki N, Hirano M, Shinozuka Y, Kawai K, Okamoto Y, Isobe N. Effects of ozonized glycerin on inflammation of mammary glands induced by intramammary lipopolysaccharide infusion in goats. Anim Sci J 2022; 93:e13780. [PMID: 36345758 DOI: 10.1111/asj.13780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/03/2022] [Accepted: 10/24/2022] [Indexed: 11/10/2022]
Abstract
Although ozone shows antimicrobial activity against mastitis-causing pathogens in ruminants, its anti-inflammatory effect on mammary glands remains unclear. The aim of this study was to examine the anti-inflammatory effects of ozonized glycerin (OG) on experimentally induced inflammation in the mammary glands of six Shiba and two Tokara lactating goats. We infused 1 μg lipopolysaccharide (LPS) into all udders on day -1. On day 0, post LPS infusion, OG (ozone group), and glycerin (control group) were infused into the right and left sides of the udders, respectively. Milk samples were collected once daily from days -1 to 7. The somatic cell count and lactoperoxidase (LPO) activity, along with the interleukin-1β (IL-1β), tumor necrosis factor-α, IL-8, IL-10, lactoferrin, and sodium ion concentrations in milk were measured. IL-8, IL-10, and lactoferrin levels after LPS infusion in the ozone group were significantly lower than those in the control group, and the LPO activity tended to be lower than that observed in the control group. This study showed that OG has anti-inflammatory potential against LPS-induced inflammation in the mammary glands.
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Affiliation(s)
- Naoki Suzuki
- Graduate School of Integrated Sciences for Life Hiroshima University Higashi‐Hiroshima Hiroshima Japan
| | - Masato Hirano
- Graduate School of Integrated Sciences for Life Hiroshima University Higashi‐Hiroshima Hiroshima Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine Azabu University Sagamihara Kanagawa Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine Azabu University Sagamihara Kanagawa Japan
| | - Yoshiharu Okamoto
- Department of Veterinary Clinical Medicine, School of Veterinary Medicine Tottori University Tottori Japan
| | - Naoki Isobe
- Graduate School of Integrated Sciences for Life Hiroshima University Higashi‐Hiroshima Hiroshima Japan
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14
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Tsugami Y, Chiba T, Obayashi T, Higuchi H, Watanabe A, Isobe N, Kawai K. Differences in antimicrobial components between bacterial culture‐positive and culture‐negative bovine clinical mastitis milk. Anim Sci J 2022; 93:e13771. [PMID: 36210498 DOI: 10.1111/asj.13771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 08/05/2022] [Accepted: 09/01/2022] [Indexed: 11/29/2022]
Abstract
A bacterial culture of milk is the most common test to determine the presence of mastitis-causing pathogens, which informs appropriate treatment. However, a certain proportion of clinical mastitis milk shows no growth of any mastitis-causing pathogens. We hypothesized that bacterial culture-negative clinical mastitis milk is associated with the activity of antimicrobial components contained in the milk. In this study, the differences in antimicrobial components (lactoferrin, transferrin, lysozyme, lactoperoxidase, and lingual antimicrobial peptide [LAP]) between bacterial culture-positive and culture-negative bovine clinical mastitis milk were investigated using Holstein cows. Our results showed that 37 out of 71 samples of clinical mastitis milk had negative bacterial cultures. The LAP concentration in bacterial culture-negative milk was lower than that in positive milk (31.95 ± 1.64 nM vs. 42.85 ± 4.01 nM). In contrast, the lysozyme concentration in bacterial culture-negative milk was higher than that in positive milk (0.76 ± 0.15 μg/ml vs. 0.42 ± 0.06 μg/ml). In conclusion, the concentration of antimicrobial components was different between bacterial culture-positive and culture-negative bovine clinical mastitis milk, which suggests that antimicrobial components are related to bacterial culture results.
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Affiliation(s)
- Yusaku Tsugami
- Graduate School of Integrated Sciences for Life Hiroshima University Hiroshima Japan
| | | | | | | | - Atsushi Watanabe
- National Institute of Animal Health National Agriculture and Food Research Organization Sapporo Japan
| | - Naoki Isobe
- Graduate School of Integrated Sciences for Life Hiroshima University Hiroshima Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine Azabu University Kanagawa Japan
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15
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Shinozuka Y, Kawai K, Kurumisawa T, Shimizu Y, Imanishi T, Ohno A, Takahashi M, Kaneko S, Suzuki N. Examination of the microbiota of normal cow milk using MinION TM nanopore sequencing. J Vet Med Sci 2021; 83:1620-1627. [PMID: 34526421 PMCID: PMC8636880 DOI: 10.1292/jvms.21-0353] [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] [Indexed: 11/24/2022] Open
Abstract
The aim of this study was to evaluate the microbiota of normal milk in dairy cows and their relationship with host factors, such as the age of the cow (Age), somatic cell counts in milk
(SCCs), and days in milk (DIM). We investigated 48 milk samples from 22 cows with no systemic or local clinical signs using MinIONTM nanopore sequencing for a 16S
rRNA gene amplicon. Bacterial richness was positively correlated with the DIM (P=0.043), and both the Shannon-Wiener Index and Simpson’s Index, which are metrics
of alpha-diversity, were also significantly positively correlated with the SCC (P<0.001). The composition ratios of both Actinobacteria at the phylum level and
Kocuria spp. at the genus level in the milk microbiota were significantly correlated with the SCC (P<0.001 and P<0.001,
respectively). In the beta-diversity test, the one-way analysis of similarities test showed a significant difference (P=0.0051) between the low- and high-SCC groups. This
study clarified that the composition of the normal milk microbiota in this herd was related to the SCC. It also raised the possibility of variations in bacterial genera in the normal milk
microbiota between the low- and high-SCC groups. However, to clarify the actual condition of the milk microbiota and to elucidate the relationship with the SCC, it is necessary to perform
further analyses taking into account not only the relative abundance, but also the absolute abundance of microbes.
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Affiliation(s)
- Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan.,Azabu University Mastitis Research Center, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan.,Azabu University Mastitis Research Center, Sagamihara, Kanagawa 252-5201, Japan
| | - Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan.,Azabu University Mastitis Research Center, Sagamihara, Kanagawa 252-5201, Japan
| | - Yuko Shimizu
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Tadashi Imanishi
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Ayumu Ohno
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Mano Takahashi
- Department of Molecular Life Science, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Sohei Kaneko
- Higashi-Hiroshima Veterinary Clinical Center, Higashi-Hiroshima, Hiroshima 739-2106, Japan
| | - Naoki Suzuki
- Higashi-Hiroshima Veterinary Clinical Center, Higashi-Hiroshima, Hiroshima 739-2106, Japan.,Present address: Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan
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16
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Komatsu J, Nishimura Y, Sugane H, Hosoda H, Imai R, Nakaoka Y, Nishida K, Seki S, Kubokawa S, Kawai K, Hamashige N, Doi Y. Acute circumflex coronary artery occlusion; dilemma in diagnosis and management. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1476] [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
Acute coronary syndrome (ACS) with occlusion of the circumflex coronary artery (LCX) poses diagnostic dilemma that may lead to a delay in reperfusion.
Purpose
We sought to assess the diagnostic significance of initial electrocardiography (ECG) changes in patients with acute LCX occlusion in relation to its clinical characteristics and the management.
Methods
From consecutive 1269 patients with ACS who were admitted to our institution during a 5-year period (2015–2019), 138 patients with ACS due to LCX occlusion were analyzed for clinical, ECG and angiographic presentation, and the door-to-balloon (DTB) time. ECG changes were classified into 4 different patterns: 1) ST-elevation in inferior/lateral leads (ST-E); 2) ST-depression in V1-V4 (ST-D); 3) no significant ST changes (No-ST); and 4) others.
Results
(1) No-ST pattern was found in 47 patients (34%), ST-E in 47 patients (34%), ST-D in 25 patients (18%) and others in 19 patients (14%). (2) Occlusion site: Proximal LCX; 16 patients with No-ST (34%), 6 patients with ST-E (13%), 13 patients with ST-D (52%). Distal LCX; 28 patients with No-ST (60%), 35 patients with ST-E (74%), 11 patients with ST-D (44%) (p=0.007). (Table) (3) Echocardiographic identification of left ventricular asynergy; 31 patients with No-ST (66%), 38 patients with ST-E (81%), 22 patients with ST-D (88%). (4) No-ST group was associated with longer DTB time; 245 min (170–562 min), compared to 93 min (83–121 min) in ST-E group and 97 min (70–129 min) in ST-D group (p<0.0001). DTB time ≤90 min was significantly uncommon in No-ST group (11%), compared to ST-E group (46%) and ST-D group (43%) (p=0.0004). (Figure)
Conclusion
One-third of the patients with LCX-ACS showed no ST changes, resulting in significantly longer DTB time. Improving diagnostic accuracy with anticipation for LCX-ACS and the use of echocardiographic examination and also the possible application of posterior leads (V7-V9) recording is challenging but critical to avoid delayed reperfusion and to improve outcomes in these patients without ECG changes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- J Komatsu
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Nishimura
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - H Sugane
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - H Hosoda
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - R Imai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Nakaoka
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Nishida
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - S Seki
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - S Kubokawa
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Kawai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - N Hamashige
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Doi
- Chikamori Hospital, Cardiomyopathy Institute, Kochi, Japan
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17
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Tsutsui Y, Kawai K. Papular CD30 + T-cell pseudolymphoma induced by S-1. J Dermatol 2021; 49:e48-e49. [PMID: 34535921 DOI: 10.1111/1346-8138.16161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/26/2021] [Accepted: 09/04/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Yuka Tsutsui
- Department of Dermatology, Kido Hospital, Niigata, Japan.,Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
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18
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Kawai K, Kondo Y, Shinozuka Y, Kawata R, Kaneko S, Iwano H, Enokidani M, Watanabe A, Yuliza-Purba F, Isobe N, Kurumisawa T. Immune response during the onset of coliform mastitis in dairy cows vaccinated with STARTVAC ®. Anim Sci J 2021; 92:e13502. [PMID: 33403781 DOI: 10.1111/asj.13502] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/27/2020] [Accepted: 12/11/2020] [Indexed: 11/30/2022]
Abstract
The immune response during the onset of coliform mastitis in vaccinated cows was investigated by measuring lactoferrin (LF), interleukin-8 (IL-8), and interleukin-1β (IL-1β) concentrations and somatic cell counts in 28 milk samples at the onset of acute coliform mastitis (ACM) and 73 milk samples at the onset of peracute coliform mastitis (PCM). Vaccinated ACM, unvaccinated ACM, and vaccinated PCM showed significantly higher values for LF and IL-1β levels than unvaccinated PCM (p < .01). The IL-8 concentration was lower in vaccinated PCM than in unvaccinated PCM (p < .05). There was no significant difference in somatic cell counts for each parameter. There were no significant differences in the parameters between vaccinated and unvaccinated ACM cows, or vaccinated ACM and PCM cows. From the above results, it is suggested that mastitis vaccination improved the early immune response, particularly at the onset of PCM, and played a large role in host defense against the initial infection.
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Affiliation(s)
- Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,Azabu University Mastitis Research Center, Sagamihara, Japan
| | - Yasuha Kondo
- NOSAI Okhotsk Yubetsu Veterinary Clinic, Yubetsu, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,Azabu University Mastitis Research Center, Sagamihara, Japan
| | | | | | - Hidetomo Iwano
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | | | - Aiko Watanabe
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Fika Yuliza-Purba
- Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Japan
| | - Naoki Isobe
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Japan
| | - Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,Azabu University Mastitis Research Center, Sagamihara, Japan
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19
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Takei I, Kawai K, Nakajima M, Ansai O, Anan T. Primary cutaneous CD4 + small/medium T-cell lymphoproliferative disorder with high Ki-67 proliferation index. J Dermatol 2021; 48:e212-e214. [PMID: 33624292 DOI: 10.1111/1346-8138.15821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 02/02/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Izumi Takei
- Department of Dermatology, Kido Hospital, Niigata, Japan.,Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
| | - Mami Nakajima
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Osamu Ansai
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takashi Anan
- Sapporo Dermatopathology Institute, Sapporo, Japan
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20
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Kawai K, Nozawa H, Hata K, Tanaka T, Nishikawa T, Sasaki K, Ishihara S. Classification of the colonic splenic flexure based on three-dimensional CT analysis. BJS Open 2021; 5:6137421. [PMID: 33609396 PMCID: PMC8271130 DOI: 10.1093/bjsopen/zraa040] [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: 03/01/2020] [Accepted: 10/14/2020] [Indexed: 11/25/2022] Open
Abstract
Background Mobilization of the splenic flexure can be a challenging surgical step in colorectal surgery. This study aimed to classify the splenic flexure based on the three-dimensional (3D) coordinates of the splenic hilum and left renal hilum. This classification was used to compare splenic flexure mobilization during colorectal resection. Methods CT images of patients with colorectal cancer treated between April 2018 and December 2019 were analysed retrospectively. 3D mutual positioning of the splenic flexure from the ligament of Treitz to the splenic hilum or the left renal hilum was used to classify patients into three groups using cluster analysis. The difference in the procedure time between groups was also analysed in a subset of patients undergoing laparoscopic colectomy with complete splenic flexure mobilization. Results Of 515 patients reviewed, 319 with colorectal cancers were included in the study and categorized based on the 3D coordinates of the splenic hilum and left renal hilum as caudal (100 patients), cranial (118) and lateral (101) positions. Male sex (P < 0.001), older age (P = 0.004) and increased bodyweight (P = 0.043) were independent characteristics of the lateral group in multiple logistic regression analysis. Thirty-four patients underwent complete splenic flexure mobilization during the study period; this took significantly longer (mean 78.7 min) in the lateral group than in the caudal and cranial groups (41.8 and 43.2 min respectively; P = 0.006). Conclusion Locating the splenic flexure using 3D coordinates could be helpful in predicting a longer duration for mobilization of the splenic flexure.
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Affiliation(s)
- K Kawai
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
| | - H Nozawa
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
| | - K Hata
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
| | - T Tanaka
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
| | - T Nishikawa
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
| | - K Sasaki
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
| | - S Ishihara
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Tokyo,Japan
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21
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Nagai M, Okabayashi T, Akagami M, Matsuu A, Fujimoto Y, Hashem MA, Mekata H, Nakao R, Matsuno K, Katayama Y, Oba M, Omatsu T, Asai T, Nakagawa K, Ito H, Madarame H, Kawai K, Ito T, Nonaka N, Tsukiyama-Kohara K, Inoshima Y, Mizutani T, Misawa N. Metagenomic identification, sequencing, and genome analysis of porcine hepe-astroviruses (bastroviruses) in porcine feces in Japan. Infect Genet Evol 2020; 88:104664. [PMID: 33333290 DOI: 10.1016/j.meegid.2020.104664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 11/29/2022]
Abstract
Recently, hepe-astrovirus-like RNA viruses named bastroviruses (BastVs), have been found in human, pig, bat, and rat fecal samples. In this study, we determined nearly complete genome sequences of four BastVs in the feces of healthy pigs. Genetic characterization revealed that these porcine BastVs (PBastVs) and BastVs from other animals including humans, had the same genome organization, that is, they contained three predicted conserved domains of viral methyltransferase, RNA helicase, and RdRp in the nonstructural ORF1 and the astrovirus capsid domain in the structural ORF2. Phylogenetic analyses using RNA-dependent RNA polymerase and the capsid region revealed that PBastVs branched with bat and rat BastVs; however, the groups formed by each host were distantly related to human BastVs. Pairwise amino acid sequence comparison demonstrated that PBastVs shared 95.2-98.6% and 76.1-95.5% sequence identity among each other in the ORF1 and ORF2 regions, respectively; the sequence identities between PBastVs and BastVs from other animals were 21.4-42.5% and 9.1-20.6% in the ORF1 and ORF2 regions, respectively. This suggested that BastVs were derived from a common ancestor but evolved independently in each host population during a prolonged period. Putative recombination events were identified in the PBastV genome, suggesting that PBastVs gain sequence diversity and flexibility through recombination events. In an analysis of previously obtained metagenomic data, PBastV sequence reads were detected in 7.3% (23/315) of fecal samples from pigs indicating that PBastVs are distributed among pig populations in Japan.
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Affiliation(s)
- Makoto Nagai
- Department of Large Animal Clinic, Azabu University, Veterinary Teaching Hospital, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Tamaki Okabayashi
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan; Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Masataka Akagami
- Kenpoku Livestock Hygiene Service Center, Mito, Ibaraki 310-0002, Japan
| | - Aya Matsuu
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Yoshikazu Fujimoto
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Md Abul Hashem
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Hirohisa Mekata
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Keita Matsuno
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Hokkaido, Japan
| | - Yukie Katayama
- Research and Education Center for Prevention of Global Infectious Disease of Animals, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
| | - Mami Oba
- Research and Education Center for Prevention of Global Infectious Disease of Animals, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
| | - Tsutomu Omatsu
- Research and Education Center for Prevention of Global Infectious Disease of Animals, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
| | - Tetsuo Asai
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), 1-1 Yanagido, Gifu 501-1193, Japan
| | - Keisuke Nakagawa
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), 1-1 Yanagido, Gifu 501-1193, Japan
| | - Hiroshi Ito
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Hiroo Madarame
- Department of Large Animal Clinic, Azabu University, Veterinary Teaching Hospital, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazuhiro Kawai
- Department of Large Animal Clinic, Azabu University, Veterinary Teaching Hospital, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Toshihiro Ito
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan; Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Nariaki Nonaka
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Kyoko Tsukiyama-Kohara
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan; Laboratory of Animal Hygiene, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Yasuo Inoshima
- Education and Research Center for Food Animal Health, Gifu University (GeFAH), 1-1 Yanagido, Gifu 501-1193, Japan
| | - Tetsuya Mizutani
- Research and Education Center for Prevention of Global Infectious Disease of Animals, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
| | - Naoaki Misawa
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan; Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan; Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan.
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22
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Kaneko M, Kawai K, Nozawa H, Hata K, Tanaka T, Nishikawa T, Shuno Y, Sasaki K, Emoto S, Murono K, Ishii H, Sonoda H, Watadani T, Takao H, Abe O, Ishihara S. Utility of computed tomography and 18 F-fluorodeoxyglucose with positron emission tomography/computed tomography for distinguishing appendiceal mucocele caused by mucinous adenocarcinoma from other pathologies. Colorectal Dis 2020; 22:1984-1990. [PMID: 32780478 DOI: 10.1111/codi.15308] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 08/04/2020] [Indexed: 02/08/2023]
Abstract
AIM Differentiating appendiceal mucocele with mucinous adenocarcinoma from other pathologies before surgery is difficult. The objective of this study was to evaluate the utility of CT and 18 F-fluorodeoxyglucose (FDG) with positron emission tomography (PET)/CT for differentiating mucinous adenocarcinoma of appendiceal mucocele from other pathologies. METHOD The study included 25 patients who underwent surgery for clinically diagnosed appendiceal mucoceles detected on CT at the University of Tokyo Hospital. Among these patients, 19 underwent FDG-PET/CT preoperatively. We compared features of the CT imaging findings and maximum standard uptake values (SUVmax ) detected by FDG-PET/CT between mucocele with mucinous adenocarcinoma and other pathologies. RESULTS A total of 13 men (52%) and 12 women (48%) were included in this study, with a median age of 65 years (range 34-83). There were six patients (24%) with pathologically confirmed mucinous adenocarcinoma, 15 patients (60%) with appendiceal mucinous neoplasm and four patients (16%) with simple mucocele caused by chronic inflammation. On the CT findings, wall irregularity was the only significant feature for the two groups in this study (83.3% vs 0.0%, P < 0.01). There was a significant difference in the SUVmax levels on PET/CT between the two groups (100.0% vs 20.0%, P < 0.01). CONCLUSION Distinguishing between mucocele with mucinous adenocarcinoma and other pathologies using imaging modalities is challenging. Our results suggest that wall irregularity on CT and elevated SUVmax on PET/CT are useful factors that can be employed for such discrimination.
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Affiliation(s)
- M Kaneko
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - K Kawai
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - H Nozawa
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - K Hata
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - T Tanaka
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - T Nishikawa
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - Y Shuno
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - K Sasaki
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - S Emoto
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - K Murono
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - H Ishii
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - H Sonoda
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - T Watadani
- Department of Radiology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - H Takao
- Department of Radiology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - O Abe
- Department of Radiology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
| | - S Ishihara
- Department of Surgical Oncology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
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Ohtsuka M, Hamada T, Miyagaki T, Shimauchi T, Yonekura K, Kiyohara E, Fujita H, Izutsu K, Okuma K, Kawai K, Koga H, Sugaya M. Outlines of the Japanese guidelines for the management of primary cutaneous lymphomas 2020. J Dermatol 2020; 48:e49-e71. [PMID: 33245165 DOI: 10.1111/1346-8138.15707] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 10/31/2020] [Indexed: 01/06/2023]
Abstract
Since the publication of the Japanese "Guidelines for the management of cutaneous lymphomas" in 2011, the World Health Organization (WHO) classification of hematolymphoid neoplasms and the WHO-European Organisation for Research and Treatment of Cancer classification for primary cutaneous lymphomas were updated and a number of novel systemic drugs for cutaneous T-cell lymphoma had been approved in Japan. In 2020, we revised the Japanese guidelines for the management of cutaneous lymphomas with consideration of the recent advances in the understanding of the pathophysiology and classification of cutaneous lymphomas together with the update of treatment strategies reflecting the advent of novel drugs. In addition to a brief explanation of epidemiology, diagnosis, staging system, prognosis and management of each subtype of cutaneous lymphomas, the recommendations for nine clinical questions regarding treatment options that can vary even among experts are also described. A systematic review process and determination of recommendations in answer to each clinical question have been performed in accordance with the Grading of Recommendations, Assessment, Development and Evaluation scheme by a multidisciplinary expert panel consisting of dermatologists, a hematologist and a radiation oncologist. In this article, we present the outlines of the revised Japanese "Guidelines for the management of cutaneous lymphomas".
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Affiliation(s)
- Mikio Ohtsuka
- Department of Dermatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Toshihisa Hamada
- Department of Dermatology, Takamatsu Red Cross Hospital, Takamatsu, Japan
| | - Tomomitsu Miyagaki
- Department of Dermatology, St Marianna University School of Medicine, Kawasaki, Japan
| | - Takatoshi Shimauchi
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kentaro Yonekura
- Department of Dermatology, Imamura General Hospital, Kagoshima, Japan
| | - Eiji Kiyohara
- Department of Dermatology, Osaka University School of Medicine, Suita, Japan
| | - Hideki Fujita
- Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
| | - Koji Izutsu
- Department of Hematology, National Cancer Center Hospital, Tokyo, Japan
| | - Kae Okuma
- Department of Radiation Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
| | - Hiroshi Koga
- Department of Dermatology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Makoto Sugaya
- Department of Dermatology, International University of Health and Welfare, Narita, Japan
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Kuroda K, Kawai K, Tokioka K, Ono T, Kawamura K, Gentaro S, Ueki Y. Post-procedural high platelet reactivity with prasugrel loading predicts in-hospital adverse events in ACS patients. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1544] [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/Introduction
High platelet reactivity (HPR) is associated with adverse cardiovascular events, primarily intrastent thrombosis, after a percutaneous coronary intervention (PCI). However, the relationship between hyperacute postprocedural HPR with prasugrel loading and clinical outcomes in acute coronary syndrome (ACS) remains unclear. Moreover, factors contributing to HPR in ACS with prasugrel loading are also unknown.
Purpose
To assess the effects of post-procedural HPR with prasugrel loading on clinical outcomes in ACS during hospitalization, and to define the appropriate cut-off values and identify factors contributing to HPR.
Methods
A single-center, retrospective observational study that enrolled 154 patients who underwent emergent PCI for ACS with prasugrel loading was performed. The P2Y12 reaction unit (PRU) value was measured immediately after PCI using the VerifyNowR system. The primary end-point was major adverse cardiac events (MACE, defined as the composite of death, myocardial infarction, stroke, heart failure, ventricular arrhythmia needing defibrillation).
Results
The mean patient age (standard deviation) was 70.7 (±12.5) years, 76.6% were men, and the average time from the prasugrel intake to PRU calculation was 103.2 (±48.5) min. During the mean hospital stay of 15.6 (±8.5) days, 24 in-hospital MACE (15.5%) and 8 deaths (5.2%) occurred. Thrombosis events, including myocardial infarction recurrence, did not occur (only one case of spontaneous coronary artery dissection was considered as myocardial infarction recurrence). PRU was significantly higher in the MACE group than that in Non-MACE group (287±55 and 232±64, respectively, p<0.001). The ROC curve analysis of PRU for discriminating the significant in-hospital MACE showed the cut-off value of 293 (sensitivity: 62.5%, specificity: 83.1% [AUC=0.756, p<0.0001]). A total of 37 patients (24%) were thus categorized as HPR (PRU>293) immediately after the emergent PCI. Kaplan-Meier curve showing MACE events occurred in the HPR group than that in the non-HPR group (40.5% vs 7.6%, p<0.001). Multiple cox analysis demonstrated that HPR was independent predictors of MACE in patients with ACS who underwent PCI (OR 11.01, 95% CI 2.39–20.2, p<0.0001). Multiple logistic regression model showed old age, female sex, low systolic blood pressure, short prasugrel intake to measure time, and large acute gain were independent predictors of HPR.
Conclusion
PRU was significantly higher in the MACE group, with an appropriate cut-off value of HPR of 293 in this study. HPR was an independent predictor of MACE during hospitalization; however, thrombosis events were not significant. HPR predictors were old age, female sex, low systolic blood pressure, short prasugrel intake to measure time, and large acute gain. This study shows the post-procedural HPR with prasugrel loading in patients with ACS can be a useful predictive marker of adverse events during hospitalization.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Kuroda
- Okayama City Hospital, Okayama, Japan
| | - K Kawai
- Okayama City Hospital, Okayama, Japan
| | - K Tokioka
- Okayama City Hospital, Okayama, Japan
| | - T Ono
- Okayama City Hospital, Okayama, Japan
| | | | - S Gentaro
- Okayama City Hospital, Okayama, Japan
| | - Y Ueki
- Okayama City Hospital, Okayama, Japan
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Shibutani H, Fujii K, Kawakami R, Imanaka T, Kawai K, Hashimoto K, Morishita S, Otagaki M, Matsumura K, Tsujimoto S, Hirota S, Shiojima I. The accuracy and interobserver variability in the assessment of coronary atherosclerotic plaques by optical frequency domain imaging: involving five observers with different levels of coronary imaging. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2464] [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
Whether optical frequency domain imaging (OFDI) images can realize pathological diagnosis of coronary atherosclerotic plaques, and whether its diagnostic accuracy of lesion types varies depending on the personal experience of the clinician caring for coronary intervention have not been elucidated.
Purpose
This study investigated the interobserver variability in characterizing atherosclerotic plaque types by OFDI for multiple OFDI observers with levels of different experience.
Methods
Three-hundred-thirty-three histological cross-sections from 21 autopsy hearts were co-registered with the corresponding OFDI images. Histological cross-sections were classified into the following 7 lesion types according to the modified AHA atherosclerosis classification by a single experienced pathologist blinded for OCT findings: adaptive intimal thickening (AIT), intimal xanthoma (IX), pathological intimal thickening (PIT), fibrous cap atheroma (FA), fibrocalcific plaque (FC), calcified nodule (CN), and healed erosion/rupture (HER). The five OFDI observers, unaware of the histological diagnosis, provided a single diagnosis for each corresponding OFDI image. The OFDI observer 1 was an expert interventional cardiologist with sufficient experience in OFDI imaging, followed by the OFDI observer 2, 3, and 4 as middle career interventional cardiologists who had completed training ten, seven, and four years. The OFDI observer 5 was a young career interventional cardiologist. The diagnostic accuracy of lesion types for each OFDI observer was determined taking histology as a gold standard.
Results
On histological analysis, 13% of histological cross-sections were diagnosed as AIT, 5% as IX, 23% as PIT, 25% as FA, 27% as FC, 2% as CN, and 5% as HER. The overall agreement between OFDI diagnosis and histopathologic diagnosis for OFDI observer 1 to 5 was 77%, 62%, 61%, 56%, and 46% (k values of 0.71, 0.54, 0.54, 0.45, and 0.33), respectively. Although the performance for characterizing AIT and FC was excellent and comparable among all OFDI observers, the sensitivity and positive predictive value for characterizing IX, PIT and FA varied depending on the OFDI observers' years of experience (Table). The main causes of false-positive or -negative diagnosis of FA were IX and PIT for all OFDI observers.
Conclusion
The diagnostic accuracy of atherosclerotic tissue properties from OFDI images correlated with the observers' years of experience, subspecialty training in coronary imaging, which suggests that the interpretation of OFDI images requires expertise and can be challenging to a less experienced reader.
Table 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - K Fujii
- Kansai Medical University, Osaka, Japan
| | - R Kawakami
- Hyogo College of Medicine, Department of Surgical Pathology, Hyogo, Japan
| | - T Imanaka
- Hyogo College of Medicine, Division of Coronary Heart Disease, Hyogo, Japan
| | - K Kawai
- Hyogo College of Medicine, Division of Coronary Heart Disease, Hyogo, Japan
| | | | | | - M Otagaki
- Kansai Medical University Medical Center, Cardiology, Osaka, Japan
| | - K Matsumura
- Kansai Medical University Medical Center, Cardiology, Osaka, Japan
| | | | - S Hirota
- Hyogo College of Medicine, Department of Surgical Pathology, Hyogo, Japan
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26
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Enokidani M, Kawai K, Shinozuka Y, Kurumisawa T. A case study of improving milking cow performance and milking system performance with using a flow simulator. Anim Sci J 2020; 91:e13389. [PMID: 32515521 DOI: 10.1111/asj.13389] [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: 01/17/2020] [Revised: 03/31/2020] [Accepted: 04/22/2020] [Indexed: 11/27/2022]
Abstract
Efforts to improve dairy performance have been focused on increasing milk productivity of cows through improved feeding systems and genetic potential. However, methods for evaluating milking system performance based on milk productivity have not yet been established. Milking system performance was evaluated by measuring the claw vacuum at five flow rates (1.9-8.7 kg/min) produced using a flow simulator for a single eight-swing milking parlor with a high-line system. Based on these results, a double eight-parallel milking parlor with a low-line system was installed and tested. Farmers can take data obtained from evaluations of milking system performance into account for future management decisions, such as renewing the milking system. By renewing the milking system, average milking productivity, somatic cell linear score (LS) of bulk milk, and LS of each cow were significantly improved in the year after installing the new system (p < .01). In addition to checking conventional milking systems, this novel diagnostic method using a flow simulator can be used for checking new installations and also for proposing renovations.
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Affiliation(s)
- Masafumi Enokidani
- Hokkaido Dairy management Services, Tsurui, Japan.,School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,Azabu University Mastitis Research Center, Sagamihara, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,Azabu University Mastitis Research Center, Sagamihara, Japan
| | - Tomomi Kurumisawa
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,Azabu University Mastitis Research Center, Sagamihara, Japan
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27
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Sato R, Mercier CK, Aihara N, Kawai K, Murakami H, Yasuda R, Satoh H, Yokoyama T, Yamada K. Diagnosis of a sublaryngeal abscess in a Japanese Black calf using computed tomography. J Vet Med Sci 2020; 82:1497-1501. [PMID: 32879155 PMCID: PMC7653319 DOI: 10.1292/jvms.20-0384] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
A 76-day-old Japanese Black calf presented with severe stridor, resenting palpation of
the laryngeal region. Endoscopic examination revealed an expansile process restricting the
esophageal and tracheal lumina caudal to the arytenoid cartilage, hyperemia and edema of
the pharyngeal mucosa, right arytenoid cartilage swelling and displacement, and marked
airway obstruction. The absence of an endotracheal wall abnormality impeded a definitive
diagnosis. Computed tomography (CT) revealed a mass (CT value: 40–45 HU) caudal to the
arytenoid cartilage, causing tracheal stenosis and esophageal displacement. The presence
of gas in the mass suggested the presence of an abscess. Diagnosis of deep retropharyngeal
lesions by conventional endoscopic and ultrasonographic examinations may be challenging;
CT can then provide more comprehensive diagnostic information on a lesion.
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Affiliation(s)
- Reiichiro Sato
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki 889-2192, Japan
| | - Christoph Koch Mercier
- Swiss Institute of Equine Medicine, Vetsuisse Faculty Berne, University of Berne, and Agroscope, Länggasstrasse 124, Postfach 8466, CH-3001 Berne, Switzerland
| | - Naoyuki Aihara
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Rie Yasuda
- Chiba Agricultural and Mutual Aid Association, 462-11 Kirigasaku, Noda, Chiba 270-0213, Japan
| | - Hiroyuki Satoh
- Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki 889-2192, Japan
| | - Taiki Yokoyama
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazutaka Yamada
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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28
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Hisadome M, Higashi Y, Yonekura K, Kawai K, Kanekura T. Type I hypersensitivity elicited by an electrolytic solution containing 5% maltose. J Cutan Immunol Allergy 2020. [DOI: 10.1002/cia2.12133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Mitsuhiro Hisadome
- Department of Dermatology Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
| | - Yuko Higashi
- Department of Dermatology Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
| | - Kentaro Yonekura
- Department of Dermatology Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
- Department of Dermatology Imamura Bun‐in Hospital Kagoshima Japan
| | - Kazuhiro Kawai
- Department of Dermatology Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
| | - Takuro Kanekura
- Department of Dermatology Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
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29
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Nozawa H, Ishii H, Sonoda H, Emoto S, Murono K, Kaneko M, Sasaki K, Nishikawa T, Shuno Y, Tanaka T, Kawai K, Hata K, Ishihara S. Effects of preceding endoscopic treatment on laparoscopic surgery for early rectal cancer. Colorectal Dis 2020; 22:906-913. [PMID: 32072748 DOI: 10.1111/codi.14989] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/02/2020] [Indexed: 02/08/2023]
Abstract
AIM Endoscopic treatment for rectal cancer, such as endoscopic mucosal resection and endoscopic submucosal dissection, causes inflammation, oedema and fibrosis in the surrounding tissue. However, little is known about the effect of these endoscopic therapies on salvage laparoscopic rectal surgery. The objective of this retrospective cohort study was to analyse the effect of preceding endoscopic treatment on the outcomes of laparoscopic surgery for rectal cancer. METHOD We analysed 53 patients who underwent laparoscopic surgery for rectal cancer with clinical Tis or T1 at our department between May 2011 and June 2019. Data from 30 patients who underwent laparoscopic surgery after preceding endoscopic treatment (Group E + S) were compared with those of 23 patients who underwent laparoscopic surgery alone (Group S). RESULTS There was no significant difference between the groups with respect to preoperative details. The mean operative time tended to be longer in Group E + S, and the volume of intra-operative blood loss was greater in Group E + S than in Group S (median 63 ml vs 10 ml, P = 0.049). There were no significant differences between the groups in other surgical parameters or oncological outcomes. CONCLUSION Laparoscopic surgery after endoscopic treatment for rectal cancer may be difficult due to an increased risk of intra-operative bleeding. Long-term prognosis after surgery was not affected by preceding endoscopic treatment in rectal cancer.
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Affiliation(s)
- H Nozawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - H Ishii
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - H Sonoda
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - S Emoto
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Murono
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - M Kaneko
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Sasaki
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - Y Shuno
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
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30
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Affiliation(s)
- Kiyoto Kimura
- Department of Dermatology Kido Hospital Niigata Japan
- Division of Dermatology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
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Murono K, Miyake H, Hojo D, Nozawa H, Kawai K, Hata K, Tanaka T, Nishikawa T, Shuno Y, Sasaki K, Kaneko M, Emoto S, Ishii H, Sonoda H, Ishihara S. Vascular anatomy of the splenic flexure, focusing on the accessory middle colic artery and vein. Colorectal Dis 2020; 22:392-398. [PMID: 31650684 DOI: 10.1111/codi.14886] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 07/01/2019] [Accepted: 10/08/2019] [Indexed: 02/06/2023]
Abstract
AIM Recently, the accessory middle colic artery (AMCA) has been recognized as the vessel that supplies blood to the splenic flexure. However, the positional relationship between the AMCA and inferior mesenteric vein (IMV) has not been evaluated. Herein, we aimed to evaluate the anatomy of the AMCA and the splenic flexure vein (SFV). METHOD Two hundred and five patients with colorectal cancer who underwent enhanced CT preoperatively were enrolled in the present study. The locations of the AMCA and IMV were evaluated, focusing on the positional relationship between the vessels and pancreas - below the pancreas or to the dorsal side of the pancreas. RESULTS The AMCA was observed in 74 (36.1%) patients whereas the SFV was found in 177 (86.3%) patients. The left colic artery (LCA) was the major artery accompanying the SFV in 87 (42.4%) of patients. The AMCA accompanied the SFV in 65 (32.7%) patients. In 15 (7.8%) patients, no artery accompanied the SFV. The origin of the AMCA was located on the dorsal side of the pancreas in 15 (20.3%) of these 74 patients. Similarly, the destination of the IMV was located on the dorsal side of the pancreas in 65 (31.7%) of patients. CONCLUSION The SFV was observed in most patients, and the LCA or AMCA was the common accompanying artery. In some patients these vessels were located on the dorsal side of the pancreas and not below it. Preoperative evaluation of this anatomy may be beneficial for lymph node dissection during left-sided hemicolectomy.
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Affiliation(s)
- K Murono
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Miyake
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - D Hojo
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Nozawa
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Y Shuno
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Sasaki
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - M Kaneko
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Emoto
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Ishii
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Sonoda
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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32
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Hisaeda K, Koshiishi T, Sasaki A, Shinozuka Y, Isobe N, Kawai K. Changes in ionized calcium concentration in the blood of dairy cows with peracute coliform mastitis. J Vet Med Sci 2020; 82:457-462. [PMID: 32101824 PMCID: PMC7192725 DOI: 10.1292/jvms.19-0678] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We determined the clinical signs and blood ionized calcium (iCa) levels in dairy cows
with peracute coliform mastitis (PCM). The clinical scores at the onset of the disease
(day 0) and on day 2 and subsequent days were significantly (P<0.01)
higher than those of healthy cows. We found a positive correlation (r=0.894,
P<0.01) between iCa and total calcium (TCa) concentrations in the
blood of healthy cows ; however there was no correlation from day 0 to day 3 in the blood
of PCM cows. Multiple regression analysis revealed that the concentration of iCa was
correlated with rectal temperature, hematocrit value, platelet count, and albumin level of
PCM cows at the onset of disease (r= −0.804, r=0.6576, r=0.6182, r=0.284,
P<0.01, respectively). There was no correlation between the TCa
concentration and these parameters for PCM cows at day 0. Low blood iCa concentration at
day 0 for PCM cows was related to symptoms of septic shock involving hypothermia,
activation of the blood coagulation system, and dehydration.
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Affiliation(s)
- Keiichi Hisaeda
- Farm Animal Veterinary Nursing, Okayama University of Science, 1-3 Ikoinooka, Imabari, Ehime 794-8555, Japan
| | - Tomoko Koshiishi
- Laboratory of Veterinary Hygiene, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Ayuna Sasaki
- NOSAI Ehime, 6-247 Nomura, Seiyo, Ehime 797-1211, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Naoki Isobe
- Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
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Ochiai K, Kaneko M, Nozawa H, Kawai K, Hata K, Tanaka T, Nishikawa T, Shuno Y, Sasaki K, Hiyoshi M, Emoto S, Murono K, Sonoda H, Ishihara S. Incidence of and risk factors for lymphocele formation after lateral pelvic lymph node dissection for rectal cancer: a retrospective study. Colorectal Dis 2020; 22:161-169. [PMID: 31454448 DOI: 10.1111/codi.14831] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 05/05/2019] [Accepted: 08/09/2019] [Indexed: 12/15/2022]
Abstract
AIM Pelvic lymphocele is a common complication that develops after pelvic lymph node dissection. The incidence of pelvic lymphocele formation has been reported to be 10.5-51% after gynaecological or urological procedures. However, no evidence has been reported thus far with regard to the development of pelvic lymphocele following lateral pelvic lymph node dissection (LPND) for low rectal cancer. The aim of this study was to investigate the incidence of and risk factors for lymphocele formation after LPND for low rectal cancer and to examine its clinical management. METHOD We retrospectively analysed the incidence of and risk factors for pelvic lymphocele formation after LPND for rectal cancer in our hospital between January 2012 and December 2017. We also compared the size of the lymphocele between asymptomatic and symptomatic patients by using CT volumetry and examined its clinical management. RESULTS A total of 30 out of 98 patients (30.8%) developed pelvic lymphocele after rectal LPND. The number of resected nodes was significantly higher in patients with a pelvic lymphocele (P < 0.01). The median volume was significantly higher in patients with symptomatic pelvic lymphocele (P = 0.011). Among the nine symptomatic patients, two underwent CT-guided drainage, one underwent transurethral ureteral stent placement and one underwent laparoscopic marsupialization. CONCLUSION It is essential to keep in mind the possibility of pelvic lymphocele formation during follow-up of patients who undergo LPND, and to consider an appropriate treatment when these patients are symptomatic.
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Affiliation(s)
- K Ochiai
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - M Kaneko
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Nozawa
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Y Shuno
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Sasaki
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - M Hiyoshi
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Emoto
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - K Murono
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - H Sonoda
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Affiliation(s)
- Yuki Iwai
- Department of Dermatology Kido Hospital Niigata Japan
- Division of Dermatology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Atsuko Ibusuki
- Department of Dermatology Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
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Enokidani M, Shinozuka Y, Kawai K. Analysis of results from 21 years of milking system inspections in Japanese dairy farms. Anim Sci J 2019; 91:e13315. [PMID: 31755160 DOI: 10.1111/asj.13315] [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: 04/09/2019] [Revised: 10/17/2019] [Accepted: 10/20/2019] [Indexed: 11/30/2022]
Abstract
To prevent mastitis caused by inappropriate milking systems, inspection of the system, and maintenance of optimal function are crucial. This study aimed to clarify the problems with milking systems in Japan by analyzing the results of milking system inspections over the past 21 years. A total of 190 dairy farms (358 systems; 153 high-line systems, 205 low-line systems) were inspected for the checkpoints of problems originating from installation (PI) or problems originating from insufficient maintenance (PIM). Results were divided into initial and periodic inspections, then analyzed by year of inspection or years elapsed since equipment installation. With increasing years, inadequacy of milk piping and regulator maintenance tended to increase for high-line systems. On the other hand, defects in milking units tended to increase for low-line systems. This difference was attributed to the structures of these milking systems. The present study revealed potential problem areas in high- and low-line milking systems from recent years. To maintain normal functioning in milking systems, the frequency and content of inspections as currently being conducted need to be reviewed.
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Affiliation(s)
- Masafumi Enokidani
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan.,Hokkaido Dairy Management Services, Tsurui, Hokkaido, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
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Hamada T, Kubo T, Nakaoka Y, Kawai K, Yabe T, Furuno T, Kondo F, Yamada E, Yamasaki N, Kitaoka H. P3536Prevalence and clinical impact of social frailty in elderly patients hospitalized for acute decompensated heart failure: a multicenter prospective cohort study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0400] [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
Purpose
The aim of this study was to investigate clinical characteristics of socially frail patients and an association with social frailty and short-term rehospitalization for worsening heart failure.
Methods
We analyzed 169 elderly patients (≥65 years old) hospitalized for acute decompensated heart failure (ADHF) between June 2017 and August 2018 in our prospective HF registry in Japan. The patients with activities of daily living dependence and without data of social frailty and outcome were excluded. Social frailty was determined based on their responses to the 5 questions (living alone, eating alone, going out less frequently, rarely visiting friends, not helpful to friends or family). Patients with none of these components were considered social non-frailty; those with one component were considered social prefrailty; those with two or more components were considered social frailty. The outcome was rehospitalization for worsening HF within 6 months after discharge.
Results
The mean age was 79±8 years old. Social frailty in 86 patients (50.8%), social prefrailty in 41 patients (24.3%), and social non-frailty in 42 patients (24.9%) were observed. Age, body mass index, geriatrics nutritional risk index, Hasegawa dementia rating scale-revised score, gait speed, and handgrip strength values were significantly different among the these three groups (all Ps for trend <0.01). Left ventricular ejection fraction, brain natriuretic peptide values, and the proportion of the patients with the symptom of New York Heart Association class III/IV did not vary significantly between the groups. Kaplan-Meier analysis revealed that higher prevalence of rehospitalization for worsening HF within 6 months in the social frailty group compared to that in the social non-frailty group (Log-rank p<0.05). In a Cox proportional hazard model after adjusting covariates, patients with social frailty (hazard ratio 4.77; 95% CI 1.61–14.12, p<0.005) and social prefrailty (hazard ratio 3.73; 95% CI 1.12–12.41, p<0.05) had an increased risk of rehospitalization for worsening HF within 6 months compared with those with social non-frailty.
Conclusion
This study revealed that social frailty was common in elderly patients hospitalized for ADHF, and social frailty was an independent predictor of rehospitalization for worsening HF within 6 months after discharge.
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Affiliation(s)
- T Hamada
- Kochi Medical School, Kochi University, Cardiology, Nankoku, Japan
| | - T Kubo
- Kochi Medical School, Kochi University, Cardiology, Nankoku, Japan
| | - Y Nakaoka
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Kawai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - T Yabe
- Kochi Prefectural Hatakenmin Hospital, Cardiology, Sukumo, Japan
| | - T Furuno
- Kochi Prefectural Aki General Hospital, Cardiology, Aki, Japan
| | - F Kondo
- Kochi Red Cross Hospital, Cardiology, Kochi, Japan
| | - E Yamada
- Susaki Kuroshio Hospital, Cardiology, Susaki, Japan
| | - N Yamasaki
- Kochi Medical School, Kochi University, Cardiology, Nankoku, Japan
| | - H Kitaoka
- Kochi Medical School, Kochi University, Cardiology, Nankoku, Japan
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Fujii K, Kawakami R, Imanaka T, Shibutani H, Kawai K, Hirota S, Shiojima I. 3284Quantification of macrophage presence and identification of thin-cap fibroatheroma by optical coherence tomography image: histopathological validation study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0055] [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: 11/15/2022] Open
Abstract
Abstract
Background
Intracoronary optical coherence tomography (OCT) is thought to be capable of identifying a vulnerable, rupture-prone plaque based on the presence of a thin-cap fibroatheroma (TCFA). Moreover, recent studies have reported that OCT may be able to identify macrophage infiltration of the fibrous cap, a key characteristic of vulnerable plaque.
Purpose
This study evaluated the accuracy of OCT image for characterizing TCFA and identifying macrophage infiltration in comparison with histopathology.
Methods
A total of 924 focal plaques in 206 coronary arteries from 78 autopsy hearts were examined to compare OCT and histological images. By histology, 16 plaques (1.7%) were classified as TCFAsthat contained a large necrotic core covered by a thin (<65μm) fibrous-cap. Correlating OCT-histological sections were identified and OCT-derived tissue property indexes named normalized standard deviation (NSD) and signal attenuation ratio were applied on the fibrous-cap to identify inflamed fibrous-cap defined as a macrophage percentage >10% by histology.
Results
With histology as standard, the sensitivity, specificity, and negative-predictive-value of TCFAs were extremely high (more than 90%). However, the positive-predictive-value of TCFAs was only 32%, which indicated a high proportion of false-positives. Most false-positive diagnoses of OCT for TCFAs contained large amounts of foam cell accumulations on luminal surface without necrotic core. Twelve of 16 fibrous-caps were considered as inflamed and the remaining 4 were non-inflamed on histology. However, no significant difference in NSD and signal attenuation ratio were identified between them. There was moderate correlation of the fibrous-cap thickness between OCT and histology (r2 = 0.41 and p<0.01).
Conclusions
OCT is a promising intracoronary imaging modality for differentiating tissue characteristics (fibrous, calcified, or lipid-rich plaque) and identifying TCFA. However, it is still challenging to precisely identify inflammation, fibrous-cap thickness, and necrotic core in the native coronary artery. Therefore, careful interpretation is required to assess coronary vulnerable plaque by OCT.
Acknowledgement/Funding
None
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Affiliation(s)
- K Fujii
- Kansai Medical University, Hirakata, Japan
| | - R Kawakami
- Hyogo College of Medicine, Nishinomiya, Japan
| | - T Imanaka
- Hyogo College of Medicine, Nishinomiya, Japan
| | | | - K Kawai
- Hyogo College of Medicine, Nishinomiya, Japan
| | - S Hirota
- Hyogo College of Medicine, Nishinomiya, Japan
| | - I Shiojima
- Kansai Medical University, Hirakata, Japan
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38
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Shibutani H, Fujii K, Kawakami R, Imanaka T, Kawai K, Hirota S, Shiojima I. 107Diagnostic accuracy of optical coherence tomography for the identification of in-stent fibroatheroma following stent implantation: an ex-vivo histological validation study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Previous histopathological studies have demonstrated that new atherosclerotic formation within the neointima, called neoatherosclerosis, is one of the most important mechanisms leading to both very late in-stent restenosis and stent thrombosis after stent implantation. Therefore, to distinguish lipid-containing atherosclerotic neointima from other tissues using intracoronary imaging modalities is clinically important to prevent late stent failures.
Purpose
This study evaluated the diagnostic performance of optical coherence tomography (OCT) for the detection of “in-stent fibroatheroma” following stent implantation by comparing cross-sections of the model with the corresponding histological images.
Methods
Fifty stented coronary arteries from the 31 autopsy hearts were imaged by OCT. Coronary arterial histopathological specimens, all of which included more than 30% of %neointimal hyperplasia, were compared with the corresponding OCT cross-sections. Histological in-stent fibroatheroma was defined as neointima containing large necrotic core and inflammatory cells. OCT-derived in-stent fibroatheroma comprised a low-intensity tissue containing a poorly delineated region with invisible stent strut behind low signal intensity.
Results
A total of 122 OCT cross-sections were compared with histological images. OCT examination revealed that 24 images (20%) contained low-intensity tissue inside the neointima. Of those, 5 images, in which stent strut behind low signal intensity was invisible, were diagnosed as OCT-derived in-stent fibroatheroma (4%) (Figure A). By histological analysis, only 4 images were classified as in-stent fibroatheroma (3%) (Figure B). With histology as the gold standard, the sensitivity, specificity, positive predictive value, negative predictive value, and overall diagnostic accuracy for OCT-derived in-stent fibroatheroma were 100%, 99%, 80%, 100%, and 99%, respectively. The only histological finding underlying the false-positive-diagnosis of OCT-derived in-stent fibroatheroma was foam cells accumulation without necrotic core on the neointimal surface (Figure C and D). Most tissue that showed low-intensity tissue with visible stent strut by OCT contained proteoglycan matrix and organized thrombus in the absence of an underlying necrotic core.
Coregistration of OCT with histology
Conclusion
This study showed the potential capability of OCT based on the visualization of stent struts behind low-intensity regions for discriminating in-stent fibroatheroma from other neointimal tissues following stent implantation.
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Affiliation(s)
- H Shibutani
- Kansai Medical University, Division of Cardiology, Osaka, Japan
| | - K Fujii
- Kansai Medical University, Division of Cardiology, Osaka, Japan
| | - R Kawakami
- Hyogo College of Medicine, Department of Surgical Pathology, Hyogo, Japan
| | - T Imanaka
- Hyogo College of Medicine, Division of Coronary Heart Disease, Hyogo, Japan
| | - K Kawai
- Hyogo College of Medicine, Division of Coronary Heart Disease, Hyogo, Japan
| | - S Hirota
- Hyogo College of Medicine, Department of Surgical Pathology, Hyogo, Japan
| | - I Shiojima
- Kansai Medical University, Division of Cardiology, Osaka, Japan
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39
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Nishikawa T, Kawai K, Ishii H, Emoto S, Murono K, Kaneko M, Sasaki K, Shuno Y, Tanaka T, Hata K, Nozawa H, Ishihara S. The impact of indocyanine-green fluorescence imaging on intraluminal perfusion of a J-pouch. Tech Coloproctol 2019; 23:931-932. [PMID: 31456105 DOI: 10.1007/s10151-019-02065-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 08/09/2019] [Indexed: 10/26/2022]
Affiliation(s)
- T Nishikawa
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
| | - K Kawai
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - H Ishii
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Emoto
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - K Murono
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - M Kaneko
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - K Sasaki
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Y Shuno
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - T Tanaka
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - K Hata
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - H Nozawa
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - S Ishihara
- Department of Surgical Oncology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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40
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Hojo D, Nishikawa T, Takayama T, Hiyoshi M, Emoto S, Nozawa H, Kawai K, Hata K, Tanaka T, Shuno Y, Kaneko M, Sasaki K, Murono K, Ishii H, Sonoda H, Hoshina K, Ishihara S. 3D printed model-based simulation of laparoscopic surgery for descending colon cancer with a concomitant abdominal aortic aneurysm. Tech Coloproctol 2019; 23:793-797. [PMID: 31440952 DOI: 10.1007/s10151-019-02060-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/05/2019] [Indexed: 10/26/2022]
Affiliation(s)
- D Hojo
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - T Nishikawa
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - T Takayama
- Department of Vascular Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - M Hiyoshi
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - S Emoto
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - H Nozawa
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Kawai
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Hata
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - T Tanaka
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Y Shuno
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - M Kaneko
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Sasaki
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Murono
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - H Ishii
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - H Sonoda
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Hoshina
- Department of Vascular Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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41
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Okamura T, Kawai K, Minari E, Nakase M, Asano H, Takeshita K. Effect of Cs and Sr separation on occupied area reduction in current nuclear energy system and its evaluation by CAERA index. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1577897] [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: 10/27/2022]
Affiliation(s)
- T. Okamura
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
| | - K. Kawai
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
| | - E. Minari
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
| | - M. Nakase
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
| | - H. Asano
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
- Radioactive Waste Management Funding and Research Center, Tokyo, Japan
| | - K. Takeshita
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
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42
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Watanabe A, Murakami H, Kakinuma S, Murao K, Ohmae K, Isobe N, Akamatsu H, Seto T, Hashimura S, Konda K, Shinozuka Y, Kawai K. Association between bovine leukemia virus proviral load and severity of clinical mastitis. J Vet Med Sci 2019; 81:1431-1437. [PMID: 31406037 PMCID: PMC6863728 DOI: 10.1292/jvms.19-0285] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The purpose of this study was to clarify the effect of Bovine leukemia virus (BLV)
infection on natural immunity in the bovine mammary gland and on the severity of clinical
mastitis. We classified milk samples from clinical mastitic cows into BLV-positive (n=76)
and BLV-negative (n=12). BLV-positive cows were further divided into cows with High BLV
proviral load (H-PVL) (n=23) and Low BLV proviral load (L-PVL) (n=53). Severity of
clinical mastitis was classified as MILD, MODERATE, or SEVERE. Multiple logistic
regression analysis was performed on the host factors and environmental factors with
severity of clinical mastitis as the objective variable. BLV proviral load (PVL) and
season at onset of mastitis showed significant correlation with the severity of clinical
mastitis. Binary logistic regression analysis was performed on natural immunity factors
lactoferrin and lingual antimicrobial peptide (LAP) concentration in milk, with PVL as the
objective variable. Of these natural immunity factors, LAP concentration in milk showed
significant correlation with PVL. The results of the present study suggested that PVL and
season are associated with severity of clinical mastitis, and that the immune function in
the mammary gland is decreased in cows with H-PVL compared to that in cows with L-PVL.
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Affiliation(s)
- Aiko Watanabe
- School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan.,Kakinuma Veterinary Hospital, Honjo, 200-1, Kodama, Kodama-cho, Honjo, Saitama 367-0212, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Seiichi Kakinuma
- Kakinuma Veterinary Hospital, Honjo, 200-1, Kodama, Kodama-cho, Honjo, Saitama 367-0212, Japan
| | - Koki Murao
- Kakinuma Veterinary Hospital, Honjo, 200-1, Kodama, Kodama-cho, Honjo, Saitama 367-0212, Japan
| | - Kaori Ohmae
- Kakinuma Veterinary Hospital, Honjo, 200-1, Kodama, Kodama-cho, Honjo, Saitama 367-0212, Japan
| | - Naoki Isobe
- Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8528, Japan
| | - Hirohisa Akamatsu
- Akamatsu Farm Clinic, 857-11, Miyahara, Fujinomiya, Shizuoka 418-0005, Japan
| | - Takahiro Seto
- Shizuoka Prefecture Livestock Research Institute, 1945, Inokashira, Fujinomiya, Shizuoka 418-0108, Japan
| | - Shinji Hashimura
- Kanagawa Prefectural Livestock Industry Technology Center, 3750, Hongo, Ebina, Kanagawa 243-0417, Japan
| | - Kunitoshi Konda
- Kanagawa Prefectural Livestock Industry Technology Center, 3750, Hongo, Ebina, Kanagawa 243-0417, Japan
| | - Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
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Nozawa H, Morikawa T, Kawai K, Hata K, Tanaka T, Nishikawa T, Sasaki K, Shuno Y, Kaneko M, Hiyoshi M, Emoto S, Murono K, Sonoda H, Fukayama M, Ishihara S. Obstruction is associated with perineural invasion in T3/T4 colon cancer. Colorectal Dis 2019; 21:917-924. [PMID: 31017742 DOI: 10.1111/codi.14655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/05/2019] [Indexed: 12/23/2022]
Abstract
AIM Perineural invasion (PNI) is a risk factor for recurrence and metastasis and consequently leads to decreased survival in patients with various malignancies. Recent studies showed that stent placement in obstructive colon cancer increases the frequency of PNI. We hypothesized that mechanical stress including obstruction itself may be associated with PNI. METHOD We retrospectively reviewed 496 patients with pathological T3 or T4 colon cancer who did not receive preoperative treatment. Data were collected from medical charts and pathological findings. The relationships between PNI and other clinicopathological factors were analysed using univariate and multivariate analyses. RESULTS PNI was observed in 239 (48%) patients. Obstruction was markedly more frequent in PNI-positive cancer (39%) than in PNI-negative cancer (24%, P = 0.0003). Multivariate analyses identified obstruction as one of the significant factors associated with PNI (OR 1.68, P = 0.028). Moreover, in 414 patients without distant metastasis who underwent complete resection, PNI was an independent factor associated with poor recurrence-free survival (hazard ratio 2.35, P = 0.003). The coexistence of PNI and obstruction resulted in greater decreases in recurrence-free survival than PNI-negative and/or non-obstructive cases. CONCLUSION Our results suggest that obstruction is associated with PNI and consequently contributes to an increased postoperative recurrence in colon cancer.
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Affiliation(s)
- H Nozawa
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Morikawa
- Department of Pathology, University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Sasaki
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - Y Shuno
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Kaneko
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Hiyoshi
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - S Emoto
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Murono
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - H Sonoda
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Fukayama
- Department of Pathology, University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
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44
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Ogura A, Kobayashi R, Aritake T, Maeda T, Kawai K, Takagi K, Kawai S, Kamiya S. Cranial-first approach for laparoscopic surgery with splenic flexure mobilization. Tech Coloproctol 2019; 23:693-694. [PMID: 31144083 DOI: 10.1007/s10151-019-02010-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/18/2019] [Indexed: 11/24/2022]
Affiliation(s)
- A Ogura
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan.
| | - R Kobayashi
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
| | - T Aritake
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
| | - T Maeda
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
| | - K Kawai
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
| | - K Takagi
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
| | - S Kawai
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
| | - S Kamiya
- Department of Surgery, Tsushima City Hospital, 3-73, Tachibana Town, Tsushima City, Aichi, 496-8537, Japan
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45
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Hamada T, Tokura Y, Sugaya M, Ohtsuka M, Tsuboi R, Nagatani T, Kiyohara E, Tani M, Setoyama M, Matsushita S, Kawai K, Yonekura K, Saida T, Iwatsuki K. Long-term efficacy and safety of bexarotene for Japanese patients with cutaneous T-cell lymphoma: The results of a phase 2 study (B-1201). J Dermatol 2019; 46:557-563. [PMID: 31090237 PMCID: PMC6899816 DOI: 10.1111/1346-8138.14923] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 04/17/2019] [Indexed: 11/30/2022]
Abstract
The present study (B‐1201 clinical trial) was conducted as a multicenter, open‐label, single‐arm phase II study to evaluate the long‐term safety, tolerability and efficacy of bexarotene. This study enrolled 10 Japanese adults aged more than 20 years with cutaneous T‐cell lymphoma (CTCL) who completed the 24‐week study period of the B‐1101 trial. The objective response rate (ORR) was 53.8% (95% confidence interval, 25.1–80.8). In the early stage (IB), the ORR was 60% (3/5 cases). In the advanced stage (IIB and IIIA), the ORR was 57.1% (4/7 cases). The median time to response was 58 days (range, 27–168). The median treatment duration was 380 days (range, 33–1674). The median duration of response (DOR) could not be reached during the study period. The longest DOR reached 1618 days at the end of the B‐1201 trial. Nine patients (56.3%) in the full analysis set (FAS) population experienced dose reduction of bexarotene. Common drug‐related adverse events in the FAS population included hypothyroidism (93.8%), hypertriglyceridemia (81.3%), hypercholesterolemia (81.3%), leukopenia (68.8%) and neutropenia (56.3%). Dose‐limiting toxicity (DLT) was present in five (38.5%) of the 13 patients in the 300 mg/m2 cohort. Of the five patients, four developed grade 3 neutropenia and one developed grade 4 hypertriglyceridemia. All DLT cases recovered after the discontinuation of bexarotene. None of the five patients discontinued this trial because of DLT. The B‐1201 trial shows the long‐term safety of oral bexarotene for Japanese patients with CTCL, despite frequent dose reduction.
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Affiliation(s)
- Toshihisa Hamada
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.,Department of Dermatology, Takamatsu Red Cross Hospital, Takamatsu, Japan
| | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Makoto Sugaya
- Department of Dermatology, International University of Health and Welfare, Chiba, Japan
| | - Mikio Ohtsuka
- Department of Dermatology, Fukushima Medical University, Fukushima, Japan
| | - Ryoji Tsuboi
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - Tetsuo Nagatani
- Department of Dermatology, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Eiji Kiyohara
- Department of Dermatology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Mamori Tani
- Department of Dermatology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Mitsuru Setoyama
- Department of Dermatology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Shigeto Matsushita
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.,Department of Dermato-Oncology/Dermatology, National Hospital Organization Kagoshima Medical Center, Kagoshima, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Kentaro Yonekura
- Department of Dermatology, Imamura General Hospital, Kagoshima, Japan
| | - Toshiaki Saida
- Department of Dermatology, Shinshu University, Nagano, Japan
| | - Keiji Iwatsuki
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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46
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Shinozuka Y, Kawai K, Takeda A, Yamada M, Kayasaki F, Kondo N, Sasaki Y, Kanai N, Mukai T, Sawaguchi M, Higuchi M, Kondo H, Sugimoto K, Kumagai S, Murayama I, Sakai Y, Baba K, Maemichi K, Ohishi T, Mizunuma T, Kawana A, Yasuda A, Watanabe A. Influence of oxytetracycline susceptibility as a first-line antibiotic on the clinical outcome in dairy cattle with acute Escherichia coli mastitis. J Vet Med Sci 2019; 81:863-868. [PMID: 30971622 PMCID: PMC6612505 DOI: 10.1292/jvms.19-0035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to clarify the therapeutic effects of oxytetracycline (OTC)
as a first-line antibiotic in cattle with acute Escherichia coli mastitis
and systemic signs. Drug susceptibility was determined by the minimum inhibitory
concentration (MIC) of E. coli isolated from cows with acute E.
coli mastitis (n=38). Cattle were divided into OTC-susceptible (S, n=30) and
OTC-resistant (R, n=8) groups. They were further subdivided according to susceptibility to
the antibiotic used as a second treatment, into susceptible-susceptible (SS, n=30),
resistant-susceptible (RS, n=5), and resistant-resistant (RR, n=3) groups. Clinical signs
on the day after initial treatment were compared between S and R groups as short-term
indicators of treatment effects. The 28-day survival rate of cattle was then compared
among SS, RS, and RR groups as a long-term indicator of treatment effects. There were no
differences in clinical signs between S and R groups on the day after the first dose, but
the 28-day survival rate was significantly greater in the SS group than in the RR group
(P=0.04). The results demonstrated that an effective drug is essential
for first-line treatment of acute coliform mastitis. However, anticipating the
effectiveness of a first-line antibiotic based on clinical symptoms at the second day of
treatment is impossible. It is important to build a picture of drug resistance trends in
cattle herds for empirical selection of antibiotics to be administered.
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Affiliation(s)
- Yasunori Shinozuka
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Akira Takeda
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Michiaki Yamada
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Fumi Kayasaki
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Nao Kondo
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Yoshiko Sasaki
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Nahoko Kanai
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Takuma Mukai
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Masaki Sawaguchi
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Masaya Higuchi
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Haruka Kondo
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Kouki Sugimoto
- NOSAI Doto, 11-6-1 Nishi-6jou-minami, Nakashibetsu, Shibetsu, Hokkaido 086-1106, Japan
| | - Shinogu Kumagai
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Isao Murayama
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Yasushi Sakai
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Kumiko Baba
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Kazuki Maemichi
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Takeshi Ohishi
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Toshio Mizunuma
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Akiko Kawana
- NOSAI Miyagi, 1-8-10 Uesugi, Aoba, Sendai, Miyagi 980-0011, Japan
| | - Akane Yasuda
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
| | - Aiko Watanabe
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
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47
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Oginezawa M, Kawai K. Cutaneous pseudolymphoma with rhinophyma-like lesion. J Dermatol 2019; 46:e335-e337. [PMID: 30951205 DOI: 10.1111/1346-8138.14882] [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: 11/30/2022]
Affiliation(s)
- Mahoko Oginezawa
- Department of Dermatology, Kido Hospital, Niigata, Japan.,Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan
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48
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Kawai K. Amoxicillin sensitization rate in patients with eruptions after Helicobacter pylori eradication therapy. J Allergy Clin Immunol 2019; 143:1975-1976. [PMID: 30878288 DOI: 10.1016/j.jaci.2019.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 02/12/2019] [Indexed: 11/25/2022]
Affiliation(s)
- Kazuhiro Kawai
- Department of Dermatology, Kido Hospital, Niigata, Japan.
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49
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Hata K, Okada S, Shinagawa T, Toshiaki T, Kawai K, Nozawa H. Meta-analysis of the association of extraintestinal manifestations with the development of pouchitis in patients with ulcerative colitis. BJS Open 2019; 3:436-444. [PMID: 31463422 PMCID: PMC6706792 DOI: 10.1002/bjs5.50149] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 01/18/2019] [Indexed: 12/13/2022] Open
Abstract
Background The presence of extraintestinal manifestations may be associated with the development of pouchitis in patients with ulcerative colitis after ileal pouch–anal anastomosis. The aim of this study was to assess this correlation. Methods A systematic literature search was performed using MEDLINE and the Cochrane Library. Studies published in English up to 22 May 2017 investigating the association between extraintestinal manifestations and development of pouchitis in adults with ulcerative colitis were included. Case reports were excluded. The association of extraintestinal manifestations with the development of overall and chronic pouchitis was investigated using a random‐effects model. Results Of 1010 citations identified, 22 observational studies comprising 5128 patients were selected for analysis. The presence of extraintestinal manifestations was significantly associated with both chronic pouchitis (odds ratio 2·28, 95 per cent c.i. 1·57 to 3·32; P = 0·001) and overall pouchitis (odds ratio 1·96, 1·49 to 2·57; P < 0·001). Conclusion The presence of extraintestinal manifestations is associated with development of pouchitis after ileal pouch–anal anastomosis.
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Affiliation(s)
- K Hata
- Department of Surgical Oncology The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8655 Japan
| | - S Okada
- Department of Surgical Oncology The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8655 Japan
| | - T Shinagawa
- Department of Surgical Oncology The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8655 Japan
| | - T Toshiaki
- Department of Surgical Oncology The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8655 Japan
| | - K Kawai
- Department of Surgical Oncology The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8655 Japan
| | - H Nozawa
- Department of Surgical Oncology The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-8655 Japan
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50
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Sakuma H, Kawai K, Katayama I, Suehara S. What is the origin of macroscopic friction? Sci Adv 2018; 4:eaav2268. [PMID: 30588496 PMCID: PMC6303119 DOI: 10.1126/sciadv.aav2268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 11/19/2018] [Indexed: 05/22/2023]
Abstract
What is the origin of molecular friction, and how can macroscopic friction be explained in terms of molecular friction? To elucidate the origins of molecular and macroscopic friction, we conducted density functional theory calculations and double-direct shear tests at normal stresses ranging from 5 to 60 MPa for mica surfaces. Frictional forces between mica surfaces were theoretically predicted to oscillate periodically every 30° of sliding direction, in agreement with previous experimental findings. This result affirms that the potential energy roughness of mica under sliding is the origin of molecular friction, which depends on the normal stress and sliding direction. The discovered mechanism of molecular friction can quantitatively explain experimentally observed macroscopic friction of mica when the presence of wear particles is taken into consideration.
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Affiliation(s)
- H. Sakuma
- National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
- Corresponding author.
| | - K. Kawai
- Department of Earth and Planetary Science, School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - I. Katayama
- Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - S. Suehara
- National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
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