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Nakamura S, Fujii T, Sato M, Kumada A, Oishi Y. Polarization change of femtosecond laser pulses in air measured by electric-field-induced second-harmonic generation. Opt Lett 2024; 49:726-729. [PMID: 38300100 DOI: 10.1364/ol.511240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 12/19/2023] [Indexed: 02/02/2024]
Abstract
We experimentally demonstrated the polarization change of femtosecond laser pulses in air by using electric-field-induced second-harmonic generation (E-FISHG) for the first time to our knowledge. The polarization change from linear to elliptical was observed at the laser intensity over the filamentation threshold. These results suggest that the polarization change can occur by the birefringence caused by filamentation. This phenomenon can be used for new applications such as an ultra-fast and precise three-dimensional electric field measurement by E-FISHG. In addition, E-FISHG can be an excellent tool to investigate the characteristics of femtosecond laser propagation such as filamentation.
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2
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Oishi Y, Tsujita H, Arai T, Sakai R, Sato S, Tanaka H, Ogura K, Masaki R, Kondo S, Tsukamoto S, Higuchi S, Sumida A, Matsumoto H, Shinke T. The vascular response to ultrathin biodegradable polymer sirolimus-eluting stent at 2-weeks and 1-year follow up in patients with ST-elevation myocardial infarction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2011] [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
Recent clinical study suggests newer-generation drug-eluting stents (DES) that combine ultrathin strut and nano-coating with biodegradable polymers sirolimus-eluting stent (BP-SES) could improve long-term clinical outcomes in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) over current generation DES. However, the details of vascular response in very early and chronic phase have not been systematically addressed.
Objective and method
We exploratory investigate early and chronic vascular response following BP-SES implantation in patients with STEMI to reveal mechanism of the favorable clinical outcomes in recent studies using frequency domain-optical coherence tomography (FD-OCT).
Consecutive twenty-four patients with STEMI who underwent FD-OCT after primary PCI and were eligible for follow-up FD-OCT at 2 weeks and 1 year after implantation were enrolled between June 2018 and August 2020.
OCT was performed immediately after PCI, at 2-weeks (2W) and 1-year (1Y) after the primary PCI. Struts were recorded as uncovered if any part was visibly exposed in the lumen or covered if a layer of tissue covered all reflecting surfaces. Struts of stents that are smaller than 3.0mm of diameter with more than 80μm between the center reflection and the adjacent vessel surface were recorded as malapposed. The reduction of atherothrombotic protrusion burden within the stent was also assessed.
Results
Twenty-four patients (age 64.9±11.4 years, male 83.3%) were enrolled.
The percentage of uncovered struts significantly decreased from post-PCI to 2W follow-up and from 2W follow-up to 1Y follow-up (62±20% post-PCI versus 27±11% at 2W follow up, p<0.0001 and 2W follow-up versus 3.3±3.3% at 1Y follow up, p<0.0001). Malapposed struts also decreased from post-PCI to 2W follow-up (4.1±3.6% post-PCI versus 1.5±2.2% at 2W follow-up, p<0.0001), but no significant difference was shown between 2W follow-up and 1Y follow-up (2W follow-up versus 1.0±2.3 at 1Y follow up, p=0.12). The average protrusion area of athero-thrombotic burden decreased (0.57±0.32 at post-PCI versus 0.42±0.22 mm2 at 2W follow up, p<0.0001) and its volume showed similar tendency (16.6±10.7 at post-PCI versus 12.9±8.23 mm3 at 2W follow up, p=0.0011). Thrombus was shown in all patients at post-PCI, but two patients (8.0%) showed it at 1Y follow-up.
Conclusion(s)
This study elucidated very early and chronic vascular responses following ultrathin strut BP-SES implantation in STEMI patients by FD-OCT. It showed resolution of athero-thrombotic materials in very early phase and favorable progression of strut coverage in very early and chronic phase.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y Oishi
- Showa University Hospital , Tokyo , Japan
| | - H Tsujita
- Showa University Hospital , Tokyo , Japan
| | - T Arai
- Showa University Hospital , Tokyo , Japan
| | - R Sakai
- Showa University Hospital , Tokyo , Japan
| | - S Sato
- Showa University Hospital , Tokyo , Japan
| | - H Tanaka
- Showa University Hospital , Tokyo , Japan
| | - K Ogura
- Showa University Hospital , Tokyo , Japan
| | - R Masaki
- Showa University Hospital , Tokyo , Japan
| | - S Kondo
- Showa University Hospital , Tokyo , Japan
| | | | - S Higuchi
- Showa University Hospital , Tokyo , Japan
| | - A Sumida
- Showa University Hospital , Tokyo , Japan
| | | | - T Shinke
- Showa University Hospital , Tokyo , Japan
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3
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Suzuki S, Asai K, Gi M, Kojima K, Kakehashi A, Oishi Y, Matsue T, Yukimatsu N, Hirata K, Kawaguchi T, Wanibuchi H. Response biomarkers of inhalation exposure to cigarette smoke in the mouse lung. J Toxicol Pathol 2022; 35:247-254. [PMID: 35832896 PMCID: PMC9256000 DOI: 10.1293/tox.2021-0077] [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: 01/25/2022] [Accepted: 04/27/2022] [Indexed: 11/19/2022] Open
Abstract
Cigarette smoking is known to increase the risk of cancer and chronic obstructive
pulmonary disease (COPD). In this study, we evaluated the effects of short-term nose-only
inhalation exposure to cigarette smoke in mice. Male 10-week-old C57BL mice were exposed
to clean air (control) or mainstream cigarette smoke for 1 h/day, 5 days/week, for 2 or 4
weeks. Exposure to cigarette smoke increased the number of inflammatory cells, especially
neutrophils, in the bronchoalveolar lavage fluid, increased inflammatory cell infiltration
foci, and caused an increase in the thickness of the peripheral bronchial epithelium.
Microarray gene expression analysis indicated that smoke exposure induced inflammatory
responses, including leukocyte migration and activation of phagocytes and myeloid cells,
as early as two weeks after the initiation of exposure. Importantly, chemokine (C-C motif)
ligand 17, resistin-like alpha, and lipocalin 2 were upregulated and may serve as useful
markers of the toxic effects of exposure to cigarette smoke before pulmonary histological
changes become evident.
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Affiliation(s)
- Shugo Suzuki
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Kazuhisa Asai
- Department of Respiratory Medicine, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Min Gi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Kazuya Kojima
- Department of Respiratory Medicine, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Anna Kakehashi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Yuji Oishi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Taisuke Matsue
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Nao Yukimatsu
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Kazuto Hirata
- Department of Respiratory Medicine, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Tomoya Kawaguchi
- Department of Respiratory Medicine, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
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Sakai R, Sekimoto T, Arai T, Tanaka H, Ogura K, Oishi Y, Nomura K, Sakai K, Arai K, Tsujita H, Kondo S, Tsukamoto S, Mori H, Koba S, Shinke T. Contributions of small dense LDL and oxidized LDL on the formation of neoatherosclerosis in patients under statin treatment. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
In-stent neoatherosclerosis (NA) has emerged as an important contributing factor to late stent failure and cardiovascular events. The aim of this study was to investigate whether lipid markers are associated with NA using optical coherence tomography (OCT) after percutaneous coronary intervention (PCI) in patients with coronary artery disease under well-controlled low density lipoprotein cholesterol (LDL-c) on statin treatment.
Methods
We enrolled consecutive 115 patients under statin treatment who underwent PCI with current-generation drug-eluting stent for acute and chronic coronary syndrome. OCT image and various lipid markers were obtained at 1-year for scheduled research assessment. NA was defined as a lipid laden neointima or calcified neointima. Both small dense LDL-c (sd-LDL-c) and remnant lipoprotein cholesterol (RL-c) were measured using direct homogenous assay.
Results
During an average follow-up of 13 months, NA was observed in 14 (13.6%) patients. Not LDL-c but sd-LDL-c, Malondialdehyde-modified LDL (MDA-LDL) as oxidized LDL and (RL-c) were significantly higher in patients with NA. The optimal threshold values of sd-LDL-c, MDA-LDL and RL-c for predicting NA according to receiver operating characteristics analysis were 32.3 mg/dl, 91.0 U/L, and 3.3 mg/dL, respectively. On multivariate logistic regression analysis, sd-LDL-c (≥32.3 mg/dL) and MDA (≥91.0 U/L) were significantly associated with NA (odds ratio [OR]:13.62, p=0.016, OR: 12.68, p=0.01, respectively).
Conclusions
In statin-treated patients, sd-LDL-c and MDA-LDL but not LDL-c might be useful biomarkers to identify the formation of NA at 1 years after PCI. Aggressive reduction of these atherogenic LDL may have a potential to prevent the formation of NA.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- R Sakai
- Showa University Hospital, Tokyo, Japan
| | | | - T Arai
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - K Ogura
- Showa University Hospital, Tokyo, Japan
| | - Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - K Sakai
- Showa University Hospital, Tokyo, Japan
| | - K Arai
- Showa University Hospital, Tokyo, Japan
| | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | - S Koba
- Showa University Hospital, Tokyo, Japan
| | - T Shinke
- Showa University Hospital, Tokyo, Japan
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5
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Arai T, Sekimoto T, Mori H, Sakai R, Tanaka H, Oishi Y, Ogura K, Nomura K, Sakai K, Tsujita H, Kondo S, Koba S, Shinke T. Higher plasma level of small dense low-density lipoprotein cholesterol in ST-segment-elevation myocardial infarction patients with plaque rupture. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2569] [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
Aim
The aim of this study was to compare small dense low-density lipoprotein cholesterol (sd-LDL-c) and various lipid markers between patients exhibiting plaque rupture (PR) in the culprit lesions evaluated by optical coherence tomography (OCT) imaging and those without PR in ST-segment elevation myocardial infarction (STEMI) patients.
Methods
We studied consecutive 60 de novo culprit lesions in 60 patients with STEMI who underwent pre-intervention OCT. PR was defined as a plaque containing a cavity that had overlying residual fibrous caps. Plasma sd-LDL-c was measured directly by homogeneous assay at the time of primary percutaneous coronary intervention.
Results
The patients were classified into PR (n=40, 66.7%) or non-PR (n=20, 33.3%). There were no significant differences in low-density lipoprotein cholesterol (LDL-c), non-high-density lipoprotein cholesterol (non-HDL-c) and pre-admission statin therapy between two groups (135.1±38.0 mg/dL vs 129.2±43.8 mg/dL; p=0.35, 157.1±37.4 mg/dL vs 143.0±37.7 mg/dL; p=0.24, 15.0% vs 20.0%; p=0.93). However, sd-LDL-c level was significantly higher in patients with PR than those with non-PR (44.0±18.1 mg/dL vs 28.0±9.3 mg/dL; p=0.0005). On multiple logistic regression analysis, sd-LDL-c was an independent predictor of PR (odds ratio, 1.14 per 1 mg/dL; p=0.0063).
Conclusion
Sd-LDL-c was significantly associated with PR of the culprit lesion in patients with STEMI.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- T Arai
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | - R Sakai
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - K Ogura
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - K Sakai
- Showa University Hospital, Tokyo, Japan
| | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | - S Koba
- Showa University Hospital, Tokyo, Japan
| | - T Shinke
- Showa University Hospital, Tokyo, Japan
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6
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Ide T, Cho YM, Oishi Y, Ogawa K. Spontaneous adenolipoma of the mammary gland in the male F344 rat. J Toxicol Pathol 2021; 34:231-234. [PMID: 34290477 PMCID: PMC8280302 DOI: 10.1293/tox.2021-0012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 03/05/2021] [Indexed: 11/29/2022] Open
Abstract
A 110-week-old male F344 rat from the high-dose group of a 104-week carcinogenicity study, exhibited a spontaneously occurring subcutaneous mass in the left axilla extending to the chest. Histologically, the mass was well-demarcated from the adjacent mammary tissue and slightly encapsulated without evidence of infiltration into the surrounding tissues. The mass contained both epithelial and adipose components. The epithelial component consisted of ductal structures of various sizes lined by a single layer of flattened to cuboidal epithelial cells with relatively clear or vacuolated cytoplasm. These ductal structures were well-intermingled with an adipose component that consisted of a uniform monomorphic cell population of mature adipocytes. Both cell types were well-differentiated and did not exhibit cellular atypia. Within the mass, fibrous connective tissue was found in the stroma with infiltration of numerous mast cells. Based on these findings, the mass was diagnosed as an adenolipoma of the mammary gland.
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Affiliation(s)
- Tetsuya Ide
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
| | - Young-Man Cho
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
| | - Yuji Oishi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka-shi, Osaka 545-8585, Japan
| | - Kumiko Ogawa
- Division of Pathology, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
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7
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Fujii T, Sato M, Nakamura S, Kumada A, Miki M, Oishi Y. Electric-field-induced second-harmonic generation using high-intensity femtosecond laser pulses over the observable optical breakdown threshold. Opt Lett 2021; 46:238-241. [PMID: 33448996 DOI: 10.1364/ol.412856] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
We investigated the performance of electric-field-induced second-harmonic generation (E-FISHG) by spectroscopic measurement using high-intensity femtosecond laser pulses. The second-harmonic intensity increased quadratically versus the applied electric field, as expected from the theory, up to 15 kV/cm with the laser energy up to 2.5 mJ, which is ∼5 times higher than the observable optical breakdown threshold. In addition, when the laser energy was 2.8 mJ, ∼80 times signal intensity at 0.23 mJ was obtained. These results suggest that the electric-field measurement by E-FISHG with high-intensity second harmonics is expected by using high-intensity laser pulses above the observable optical breakdown threshold. Spectroscopic measurement shows no E-FISHG of white light generated by self-phase modulation in laser-induced filament.
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8
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Sukhorukov V, Nikiforov N, Kubekina M, Sobenin I, Foxx K, Stegmaier P, Pintus S, Stelmashenko D, Kel A, Manabe I, Oishi Y, Orekhov A. Signaling pathways potentially responsible for foam cell formation: Cholesterol accumulation or inflammatory response - What is primary? Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Ogura K, Tsujita H, Arai T, Sakai R, Tanaka H, Masaki R, Oishi Y, Nomura K, Arai K, Sekimoto T, Kondo S, Tsukamoto S, Mori H, Matsumoto H, Shinke T. Early vascular healing following bioresorbable-polymer sirolimus-eluting stent implantation in comparison with durable-polymer everolimus-eluting stent: sequential optical coherence tomography study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Orsiro ultrathin-strut bioresorbable-polymer sirolimus-eluting stent (BP-SES) might facilitate early vascular healing responses that seems to be associated with improved long-term clinical outcomes. We compared the early vascular healing responses to BP-SES and Xience durable-polymer everolimus-eluting stent (DP-EES) in patients with chronic coronary syndrome (CCS) using optical coherence tomography (OCT).
Methods
A total of 40 patients with CCS receiving OCT-guided PCI were included. 20 patients were assigned to BP-SES, and 20 to DP-EES. OCT was performed immediately after stent placement (post-procedure) and at 1 month follow-up. Struts were recorded as uncovered if any part was visibly exposed in the lumen or covered if a layer of tissue covered all reflecting surfaces. The incidence of intrastent thrombus (IS-Th) and irregular protrusion (IRP) were also assessed.
Results
At 1 month, the percentage of uncovered struts was significantly lower in the BP-SES compared with the DP-EES (2.8±1.6% vs. 5.8±1.8%, respectively; p<0.001), and that of malapposed struts was similar between both groups (2.5±3.1% vs. 2.4±2.2%; p=0.76). There were no differences in the incidence of IS-Th (65.0% vs. 55.0% at post-procedure; p=0.54, 30.0% vs. 35.0% at 1 month; p=0.75) and IRP (30.0% vs. 25.0% at post-procedure; p=0.74). IRP had completely resolved at 1 month in both groups.
Conclusion
Early vascular healing response to Orsiro BP-SES implantation was revealed in CCS patients at 1 month compared with Xience DP-EES. Orsiro BP-SES may have a potential to shorten the dual antiplatelet therapy duration.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Ogura
- Showa University Hospital, Tokyo, Japan
| | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - T Arai
- Showa University Hospital, Tokyo, Japan
| | - R Sakai
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - R Masaki
- Showa University Hospital, Tokyo, Japan
| | - Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - K Arai
- Showa University Hospital, Tokyo, Japan
| | | | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | | | - T Shinke
- Showa University Hospital, Tokyo, Japan
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10
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Oishi Y, Shinke T, Tanaka H, Ogura K, Arai K, Masaki R, Nomura K, Kosaki R, Sakai K, Sekimoto T, Tsujita H, Kondo S, Tsukamoto S, Mori H, Matsumoto H. Early vascular responses to ultrathin biodegradable polymer sirolimus-eluting stent for the treatment of st-elevation myocardial infarction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1781] [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
Recent clinical study suggests newer-generation drug-eluting stents (DES) that combine ultrathin strut and nano-coating with biodegradable polymers sirolimus-eluting stent (BP-SES) could improve long-term clinical outcomes in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) over current generation DES. However, safety profiles in very early phase have not been systematically addressed.
Objective and method
We exploratory investigate early vascular response following BP-SES implantation in patients with STEMI to reveal mechanism of the favorable clinical outcomes in recent studies using frequency domain-optical coherence tomography (FD-OCT).
Consecutive twenty patients with STEMI who underwent FD-OCT immediately after primary PCI and were eligible for follow-up FD-OCT at 2 weeks after implantation were enrolled between June 2018 and November 2019.
Results
Twenty patients (age 62.7±11.3 years, male 85.0%) were enrolled with frequencies of hypertension (45.0%), diabetes mellitus (35.0%), dyslipidemia (55.0%) and smoking (80.0%). Aspiration catheter were used in all patients, and 1.13±0.34 stents were used. Only one patient (5.0%) received chronic antiplatelet therapy with aspirin prior to the onset of STEMI. All patients started to receive prasugrel as thienopyridine from this event and continued dual antiplatelet therapy for 2 weeks.
The percentage of uncovered struts significantly decreased from post-procedure to 2W follow-up (69±18% post-procedure versus 30±11% at 2W follow up, p<0.0001). Malapposed struts also decreased (5.6±5.7% post-procedure versus0.9±1.2% at 2W follow up, p<0.0001).The average protrusion area of athero-thrombotic burden numerically decreased (0.37±0.19 at post-procedure versus 0.34±0.14 mm2 at 2W follow up, p=0.19) and its volume showed similar tendency (10.60±6.40 at post-procedure versus 9.36±5.14 mm3 at 2W follow up, p=0.19).
Conclusion(s)
This study firstly elucidated very early vascular responses following ultrathin strut BP-SES implantation in STEMI patients, showing early progression of strut coverage and resolution of athero-thrombotic materials. This technology may have a potential to overcome the current generation DESs in this clinical setting.
Thrombus, uncovered and malapposed struts
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - T Shinke
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - K Ogura
- Showa University Hospital, Tokyo, Japan
| | - K Arai
- Showa University Hospital, Tokyo, Japan
| | - R Masaki
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - R Kosaki
- Showa University Hospital, Tokyo, Japan
| | - K Sakai
- Showa University Hospital, Tokyo, Japan
| | | | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
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11
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Kanayama Y, Kojima T, Hirano Y, Takahashi N, Oishi Y, Ishiguro N. THU0171 EFFICACY OF ABATACEPT FOR SUPPRESSING RADIOGRAPHIC PROGRESSION OF CERVICAL LESIONS IN PATIENTS WITH RHEUMATOID ARTHRITIS COMPARISON WITH METHOTREXATE TREATMENT; TWO YEARS OF FOLLOW-UP ~A MULTICENTER REGISTRY STUDY ~. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Background:Cervical lesions are known to occur at high frequency as a complication of rheumatoid arthritis (RA). Treatment with biological agents are more clinically effective than the DMARDs that were in use previously, in particular, with their efficacy in suppressing joint destruction having been emphasized. We reported the efficacy of infliximab, anti-tumor necrosis factor antibodies for suppressing the radiographic progression of RA cervical lesions at ACR2009, EULAR2010, 11, 12, 13, 14,16 and 18. However there is still few studies of efficacy of against RA cervical lesions of Abatacept (ABT) that inhibits T cell activation by binding to CD80/86.Objectives:To evaluate the efficacy of ABT for suppressing the radiographic progression of RA cervical lesions comparison with MTX for 2 years.Methods:We used ABT or MTX for treating Japanese patients with active RA who fulfilled the ACR criteria in 1987. The final study cohort of each 60 and 75 patients received continuous ABT and MTX treatment for at least 2 years. For evaluation of cervical lesions, the atlanto-dental interval (ADI), the space available for the spinal cord (SAC), and the Ranawat value were measured by plain lateral radiographs in the flexion position, at initiation and Year 1,2.Results:In the patients receiving ABT (n=60) and MTX (n =75), the number of female were each 48(80%) and 52(69%) cases(p=0.160). The mean age was 67.7 ± 12.9 and 63.6 ± 11.0 years old (p=0.004); disease duration was 16.7 ± 14.2 and 8.0 ± 9.5 years (p<0.001) and the mean dose of MTX was 8.4 ± 3.6 and 8.2 ± 2.9 mg/w (p=0.804). Clinical findings related to RA were as follows; CRP 2.2± 2.1 and 1.7± 2.3 mg/dl(p=0.008); ESR 47.2 ± 23.4 and 31.9 ± 21.8mm/h(p<0.001); MMP3 253 ± 280 and 223 ± 350ng/ml(p=0.003); the number of RF-positive 57(95%) and 60(80%) cases(p=0.011); DAS28-ESR 5.13 ± 0.99 and 4.30 ± 1.38 (p<0.001); ADI 3.6 ± 2.1 and 2.6 ± 1.6mm(p=0.003); SAC 18.5 ± 2.8 and 20.8 ± 2.5mm(p<0.001) and Ranawat value 14.4 ± 1.9 and 16.0 ± 1.5mm (p<0.001). The respective changes in cervical lesion parameters after 1 year were as follows: ADI: 0.20 ± 0.40 and 0.27 ± 0.45 mm (p = 0.367); SAC: −0.12 ± 0.32 and −0.17 ± 0.38 mm (p = 0.359); and Ranawat value: −0.15 ± 0.36 and −0.13 ± 0.34 mm (p = 0.783). The respective changes in cervical lesion parameters after 2 years were as follows: ADI: 0.35 ± 0.58 and 0.55 ± 0.70 mm (p = 0.099); SAC: −0.25 ± 0.47 and −0.45 ± 0.62 mm (p = 0.047); and Ranawat value: −0.23 ± 0.47 and −0.33 ± 0.55 mm (p = 0.293) in the patients receiving ABT and MTX (Fig. 1). The numbers of patients who did not showed progression in ADI, SAC and Ranawat value were each 42(70%) and 43(57%) cases(p=0.130); 46(77%) and 46(61%) cases(p=0.057) and 47(78%) and 53(71%) cases(p=0.313) after 2 years. Also the number who was able to suppress progression in all three parameters were each 42 cases (70%) receiving ABT and 43 cases (57%) receiving MTX (p=0.130) after 2 years (Fig. 2).Conclusion:This study suggested that ABT treatment can be used to suppress the progression of RA cervical lesions more than MTX treatment.Disclosure of Interests:Yasuhide Kanayama: None declared, Toshihisa Kojima Grant/research support from: Chugai, Eli Lilly, Astellas, Abbvie, and Novartis, Consultant of: AbbVie, Speakers bureau: AbbVie, Astellas, Bristol-Myers Squibb, Chugai, Daiichi-Sankyo, Eli Lilly, Janssen, Mitsubishi Tanabe, Pfizer, and Takeda, Yuji Hirano Speakers bureau: Tanabe-Mitsubishi, Pfizer, Eisai, Abbie, Chugai, Bristol-Meyers, Jansen, Astellas, UCB, Eli-Lilly, Asahikasei, Daiichi-Sankyo, Amgen, Nobunori Takahashi Speakers bureau: AbbVie, Asahi Kasei, Astellas, Bristol-Myers Squibb, Chugai, Daiichi-Sankyo, Eisai, Eli Lilly, Janssen, Mitsubishi Tanabe, Ono, Pfizer, Takeda, and UCB Japan, Yukiyoshi Oishi: None declared, Naoki Ishiguro Grant/research support from: AbbVie, Asahi Kasei, Astellas, Chugai, Daiichi-Sankyo, Eisai, Kaken, Mitsubishi Tanabe, Otsuka, Pfizer, Takeda, and Zimmer Biomet, Consultant of: Ono, Speakers bureau: Astellas, Bristol-Myers Squibb, Daiichi-Sankyo, Eli Lilly, Pfizer, and Taisho Toyama
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Sasaki H, Kotaki T, Fujimori A, Tsukamoto T, Suzuki E, Oishi Y, Shibasaki Y. Excellent performance of aromatic polyguanamines induced by multiple hydrogen bondable tetraazacalix[2]arene[2]-triazine ring in their main chain. RSC Adv 2020; 10:1361-1370. [PMID: 35494688 PMCID: PMC9047533 DOI: 10.1039/c9ra09136j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/19/2019] [Indexed: 11/21/2022] Open
Abstract
A series of poly(guanamine) (c-PG)s containing tetraazacalix[2]arene[2]-triazine (mPDA2CyC2) were successfully prepared by solution polycondensation of mPDA2CyC2 with various aromatic diamines in an aprotic organic solvent with a lithium chloride additive (5 wt%) at 150 °C for 6 hours. The number-average molecular weights (Mn)s of these c-PG polymers reached up to 31 500, with a relatively broad molecular weight distribution (Mw/Mn) of 5.3. They showed good solubility in aprotic organic solvents, such as N-methylpyrrolidone and N,N-dimethylacetamide at a concentration of 2 mg mL−1. The glass transition temperatures (Tg) of the c-PG polymers were in the range 359 °C–392 °C, approximately 160 °C higher than those of counterpart polymers (i.e., with no aza-calixarene-based PG (l-PG)). The coefficients of thermal expansion (CTEs) of the c-PG polymers were 29.7–48.1 ppm K−1 (at 100 °C–150 °C), much lower than those of l-PG samples, i.e., 59.1–85.1 ppm K−1. Transparent and almost colorless c-PG films were successfully prepared by a solution casting method, showing maximum tensile strength (σS), modulus (Eγ), and elongation at break (Eb) values of 151 MPa, 6.3 GPa, and 4.4%, respectively, for the c-PG polymer from mPDA2CyC2 and 4,4′-oxydianiline monomers. The corresponding l-PG film exhibited σS, Eγ, and Eb values of just 76 MPa, 5.4 GPa, and 1.6%, respectively. These outstanding thermal and mechanical properties of the c-PG polymers can be attributed to their multiple hydrogen bonding interaction between mPDA2CyC2 residues in the polymer backbone. This interaction was identified by infrared spectroscopy measurements at the broad absorption band around 3000–3400 cm−1. Poly(guanamine)s containing tetraazacalix[2]arene[2]triazine ring within the polymer main-chain show outstanding thermal and mechanical properties arisen from the multiple-hydrogen bond.![]()
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Affiliation(s)
- H Sasaki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - T Kotaki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - A Fujimori
- Graduate School of Science and Engineering, Saitama University 255 Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - T Tsukamoto
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - E Suzuki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - Y Oishi
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
| | - Y Shibasaki
- Department of Chemistry & Biological Sciences, Faculty of Science & Engineering, Iwate University 4-3-5 Ueda Morioka Iwate 020-8551 Japan
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Nikiforov N, Sukhorukov V, Kubekina M, Kolmychkova K, Oishi Y, Orekhov A. PO039 Inflammatory Genes Regulate Cholesterol Metabolism. Glob Heart 2018. [DOI: 10.1016/j.gheart.2018.09.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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14
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Oishi Y, Tani K, Taura Y. Transcatheter arterial embolisation in four dogs with hepatocellular carcinoma. J Small Anim Pract 2018; 60:761-766. [PMID: 30298574 DOI: 10.1111/jsap.12944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 01/07/2018] [Accepted: 06/26/2018] [Indexed: 01/02/2023]
Abstract
Four dogs with hepatocellular carcinoma were treated by transcatheter arterial embolisation. In all dogs, the tumour-supplying arteries were selectively embolised with gelatine sponge particles. Post-embolisation tumour volumes decreased relative to pre-embolisation volumes in all dogs. No adverse reactions were observed in three dogs after treatment but one dog showed pancreatitis. These results suggest that transcatheter arterial embolisation is a feasible treatment for dogs with hepatocellular carcinoma.
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Affiliation(s)
- Y Oishi
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8511, Japan
| | - K Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8511, Japan
| | - Y Taura
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8511, Japan
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Gi M, Fujioka M, Yamano S, Kakehashi A, Oishi Y, Okuno T, Yukimatsu N, Yamaguchi T, Tago Y, Kitano M, Hayashi SM, Wanibuchi H. Chronic dietary toxicity and carcinogenicity studies of dammar resin in F344 rats. Arch Toxicol 2018; 92:3565-3583. [PMID: 30251054 DOI: 10.1007/s00204-018-2316-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/19/2018] [Indexed: 01/09/2023]
Abstract
Dammar resin is a natural food additive and flavoring substance present in many foods and drinks. The present study evaluates the chronic toxicity and carcinogenicity of dietary dammar resin in F344 rats. Dietary concentrations in the 52-week chronic toxicity study were 0, 0.03, 0.125, 0.5, or 2%. The major treatment-related deleterious effects were body weight suppression, increased relative liver weight, and low hemoglobin levels in males and females. Foci of cellular alteration in the liver were observed in the male 2% group, but not in any other group. The no-observed-adverse-effect level for chronic toxicity was 0.125% for males (200.4 mg/kg b.w./day) and females (241.9 mg/kg b.w./day). Dietary concentrations in the 104-week carcinogenicity study were 0, 0.03, 0.5, or 2%. Dammar resin induced hemorrhagic diathesis in males and females, possibly via the inhibition of extrinsic and intrinsic coagulation pathways. Incidences of hepatocellular adenomas and carcinomas were significantly increased in the male 2% group, but not in any other group. In the 4-week subacute toxicity study, the livers of male rat-fed diet-containing 2% dammar resin had increased levels of protein oxidation and increased the expression of two anti-apoptotic and seven cytochrome P450 (CYP) genes. There was also an increased tendency of oxidative DNA damage. These findings demonstrate that dammar resin is hepatocarcinogenic in male F344 rats and underlines the roles of inhibition of apoptosis, induction of CYP enzymes, and oxidative stress in dammar resin-induced hepatocarcinogenesis.
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Affiliation(s)
- Min Gi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Masaki Fujioka
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Shotaro Yamano
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
- Japan Bioassay Research Center, Japan Organization of Occupational Health and Safety, Hadano, 257-0015, Kanagawa, Japan
| | - Anna Kakehashi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Yuji Oishi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Takahiro Okuno
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Nao Yukimatsu
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Takashi Yamaguchi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Yoshiyuki Tago
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Mistuaki Kitano
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Shim-Mo Hayashi
- Global Scientific and Regulatory Affairs, San-Ei Gen F.F.I., Inc., 1-1-11 Sanwa-cho, Toyonaka, 561-8588, Osaka, Japan
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan.
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Ogawa S, Kuroda H, Kinomoto T, Kawabata Y, Kawabe M, Suguro M, Oishi Y. Verification of a false positive in a two-year rat carcinogenicity study using dual control groups. J Toxicol Sci 2018; 43:557-563. [PMID: 30185696 DOI: 10.2131/jts.43.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
There is sometimes controversy over whether or not statistically significant responses produced in carcinogenicity studies have biologically significance. Ambiguous results from our previous two-year oral carcinogenicity study on acotiamide hydrochloride hydrate (acotiamide-HH), a prokinetic drug for functional dyspepsia, in rats made it unclear whether the drug may exhibit uterine carcinogenicity. To check this finding, we performed a second long-term carcinogenicity study using two identical control groups to more accurately evaluate uterine carcinogenesis by considering the incidence of spontaneous neoplasms. Female Fischer 344 rats were divided into three groups: the two control groups (control 1 and 2) were administered vehicle (0.5% w/v methylcellulose) and the acotiamide-HH-treated group was administered 2,000 mg/kg/day of acotiamide-HH by oral gavage for two years. Among all groups, the incidence of endometrial adenocarcinoma (EmA) was highest in the control 2 group, followed by the acotiamide-HH-treated group and the control 1 group. Moreover, acotiamide-HH did not affect the incidence of precursor lesions of EmA. In cases where an ambiguous difference is observed, the use of two control groups allows for a more informed interpretation of the findings in the drug-treated groups. The outcomes in this study strongly support the hypothesis that the increase in EmA in rats treated with acotiamide-HH in our previous study is unrelated to administration of the drug.
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Affiliation(s)
- Shuji Ogawa
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd
| | | | | | | | | | | | - Yuji Oishi
- Department Molecular Pathology, Osaka City University
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Stepanova M, Oishi Y, Kirichenko T, Orekhov A. Monocyte activation: Cellular test for development of diagnostics and therapy. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Sukhorukov V, Zakiev E, Nikiforov N, Oishi Y, Zhelankin A, Sobenin I, Makeev V, Kontush A, Le Goff W, Foxx K, Kruth H, Jin X, Bukrinsky M, Orekhov A. Transcriptome analysis of human macrophages reveals genes regulating cellular cholesterol efflux. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Toyama M, Watanabe S, Kuroda Y, Ojima E, Kato J, Oishi Y. P5583Intra-stent Thrombus is Associated with Cytochrome P450 2C19 Genotypes in Clopidogrel-treated Patients, but its Genotype doesn't matter in Prasugrel-treated Patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Toyama
- University of Tsukuba Hospital Mito Medical Center, Cardiology, Mito, Japan
| | - S Watanabe
- University of Tsukuba Hospital Mito Medical Center, Cardiology, Mito, Japan
| | - Y Kuroda
- University of Tsukuba Hospital Mito Medical Center, Cardiology, Mito, Japan
| | - E Ojima
- University of Tsukuba Hospital Mito Medical Center, Cardiology, Mito, Japan
| | - J Kato
- University of Tsukuba Hospital Mito Medical Center, Cardiology, Mito, Japan
| | - Y Oishi
- University of Tsukuba Hospital Mito Medical Center, Cardiology, Mito, Japan
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Oishi Y, Imamura T, Shimomura T, Suzuki K. Visual texture agnosia in dementia with lewy bodies and Alzheimer’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kuroda H, Kinomoto T, Ogawa S, Kawabe M, Suguro M, Naraoka H, Takamatsu K, Oishi Y. Progression process and safety assessment adaptation of endometrial lesions in ENU-induced 2-stage uterine carcinogenicity in a Tg-rasH2 mouse model. J Toxicol Pathol 2017; 31:35-41. [PMID: 29479138 PMCID: PMC5820101 DOI: 10.1293/tox.2017-0035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/23/2017] [Indexed: 11/23/2022] Open
Abstract
Although acotiamide hydrochloride hydrate (acotiamide-HH) has not been reported to have genotoxic findings in any of the genotoxicity studies or treatment-related toxicological findings in reproductive and developmental studies, suspicious uterine tumorigenesis was observed in the results of a long-term rat carcinogenicity study. To clarify the uterine tumorigenesis of acotiamide-HH, we performed a 2-stage uterine carcinogenicity model in the transgenic rasH2 mouse initiated by N-Ethyl-N-nitrosourea (ENU). This model facilitated the short-term detection of uterine carcinogenic potential, and it appears to be a very useful testing method for assessing the safety of chemicals that may affect uterine tumorigenesis. However, there have not been many reports on this model, and accumulation of case studies using this model is recommended to support its usability. In this study, we performed this carcinogenesis model to not only confirm uterine tumorigenesis of acotiamide-HH but also to confirm the reliability of the model. The results of this study revealed that the endometrial adenocarcinoma found in the long-term rat carcinogenicity study possibly arose spontaneously. Also, we confirmed early induction of a uterine tumor as in previous reports and confirmed that 26 weeks is the appropriate treatment period for this rasH2 mouse model according to time-course observations of uterine tumor development.
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Affiliation(s)
- Hiroyuki Kuroda
- R&D PLANNING, Zeria Pharmaceutical Co., Ltd., 10-11 Nihonbashi Kobuna-cho, Chuo-ku, Tokyo 103-8351, Japan
| | - Toshiko Kinomoto
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., 2512-1 Aza Numagami, Oshikiri, Kumagaya-shi, Saitama 360-0111, Japan
| | - Shuji Ogawa
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., 2512-1 Aza Numagami, Oshikiri, Kumagaya-shi, Saitama 360-0111, Japan
| | - Mayumi Kawabe
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya, Aichi 491-0113, Japan
| | - Mayuko Suguro
- DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya, Aichi 491-0113, Japan
| | - Hitoshi Naraoka
- Tsukuba Research Center, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba-shi, Ibaraki 305-8585, Japan
| | - Kazuhiko Takamatsu
- Tsukuba Research Center, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba-shi, Ibaraki 305-8585, Japan
| | - Yuji Oishi
- Department Molecular Pathology, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka-City, Osaka 545-8585, Japan
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Mori T, Masukawa S, Kikkawa T, Fujimori A, Satoh A, Matsumoto K, Jikei M, Oishi Y, Shibasaki Y. Rapid synthesis and properties of segmented block copolymers based on monodisperse aromatic poly(N-methyl benzamide) and poly(propylene oxide). RSC Adv 2017. [DOI: 10.1039/c7ra05161a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monodisperse aromatic N-methyl benzamide-based molecules (Mw/Mn = 1.02–1.04) with terephthalic acid at both sides (MABx–x) were rapidly prepared by a step-wise reaction using the reported one-pot dendrimer synthetic method.
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Affiliation(s)
- T. Mori
- Department of Chemistry & Biological Sciences
- Faculty of Science & Engineering
- Iwate University
- Iwate 020-8551
- Japan
| | - S. Masukawa
- Department of Chemistry & Biological Sciences
- Faculty of Science & Engineering
- Iwate University
- Iwate 020-8551
- Japan
| | - T. Kikkawa
- Graduate School of Science and Engineering
- Saitama University
- Saitama 338-8570
- Japan
| | - A. Fujimori
- Graduate School of Science and Engineering
- Saitama University
- Saitama 338-8570
- Japan
| | - A. Satoh
- Department of Applied Chemistry
- Akita University
- Akita-shi
- Japan
| | - K. Matsumoto
- Department of Applied Chemistry
- Akita University
- Akita-shi
- Japan
| | - M. Jikei
- Department of Applied Chemistry
- Akita University
- Akita-shi
- Japan
| | - Y. Oishi
- Department of Chemistry & Biological Sciences
- Faculty of Science & Engineering
- Iwate University
- Iwate 020-8551
- Japan
| | - Y. Shibasaki
- Department of Chemistry & Biological Sciences
- Faculty of Science & Engineering
- Iwate University
- Iwate 020-8551
- Japan
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Nagayama A, Matsui A, Tachibana A, Suzuki N, Hirata M, Oishi Y, Hamaguchi Y, Murata Y, Okamoto Y. Evaluation of neoadjuvant weekly nanoparticle albumin-bound paclitaxel for HER2-negative breast cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw365.75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yamakawa Y, Ide T, Mitori H, Oishi Y, Matsumoto M. Accumulation of brown pigment-laden macrophages associated with vascular lesions in the lungs of cynomolgus monkeys(Macaca fascicularis). J Toxicol Pathol 2016; 29:181-4. [PMID: 27559243 PMCID: PMC4963612 DOI: 10.1293/tox.2015-0079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/01/2016] [Indexed: 11/30/2022] Open
Abstract
Accumulation of macrophages containing brown pigments in the lungs is a well-known
spontaneous lesion found in cynomolgus monkey. However, its pathogenesis has not been
clearly described. In our survey, brown pigment-laden macrophages were found in the lungs
of 4 out of 43 cases. Brown pigments were mostly found in the macrophages of the
perivascular interstitium, which proved to be hemosiderin. Some small- to medium-sized
vessels that exhibited prominent accumulation of brown pigment-laden macrophages showed
degeneration and necrosis of the smooth muscle cells of tunica media. Furthermore,
ruptures of the internal and external elastic laminae were seen in some of the vessels.
These findings suggested that partial fragmentation of the vascular elastic lamina
followed by degeneration and necrosis of the tunica media caused blood leakage leading to
the accumulation of hemosiderin-laden macrophages in the perivascular interstitium of the
lungs.
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Affiliation(s)
- Yoshika Yamakawa
- Drug Safety Research Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Tetsuya Ide
- Drug Safety Research Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Hikaru Mitori
- Drug Safety Research Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Yuji Oishi
- Drug Safety Research Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Masahiro Matsumoto
- Drug Safety Research Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
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Okiura T, Oishi Y, Takemura A, Ishihara A. Effects of collagen hydrolysate on the tibialis anterior muscle and femur in senescence-accelerated mouse prone 6. J Musculoskelet Neuronal Interact 2016; 16:161-7. [PMID: 27282460 PMCID: PMC5114359] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Effects of collagen hydrolysate (CHD) on the oxidative capacity of the tibialis anterior muscle and the cortical and trabecular density of the femur were investigated in senescence-accelerated mouse prone 6 (SAMP6). METHODS Sixteen-week-old male SAMP6 mice were divided into control (CON) and CHD groups. The CON group was given normal water, while the CHD group was given water containing CHD. Fibre cross-sectional areas (CSAs), fibre succinate dehydrogenase (SDH) staining intensity, and SDH activity of the tibialis anterior muscle were determined at 42 and 60 weeks of age. The cortical and trabecular density of the femur and serum osteocalcin levels were also determined. RESULTS The fibre SDH staining intensity and muscle SDH activity were higher in the CHD group at 60 weeks of age than in the age-matched CON group. The cortical and trabecular density and serum osteocalcin levels were greater in the CHD group at 60 weeks of age than in the age-matched CON group. CONCLUSION CHD inhibited th age-induced decrease in muscle oxidative capacity and bone density of SAMP6 mice. There is a possibility that CHD is effective for inhibition of age-induced degeneration in the musculoskeletal system.
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Affiliation(s)
- T. Okiura
- Research and Development Center, NH Foods Ltd., Tsukuba, Japan
| | - Y. Oishi
- Research and Development Center, NH Foods Ltd., Tsukuba, Japan
| | - A. Takemura
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
| | - A. Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan,Corresponding author: Akihiko Ishihara, Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan E-mail:
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Hirano Y, Hirabara S, Isono M, Oishi Y, Ishiguro N, Kojima T. AB0379 Tapering or Stopping of Methotrexate in Non-Tumor Necrosis Factor Therapy (Tocilizumab and Abatacept) in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Tsubota K, Kanki M, Noto T, Nakatsuji S, Oishi Y, Matsumoto M, Nakayama H. Altered gene expression profile in ovarian follicle in rats treated with indomethacin and RU486. J Toxicol Sci 2016; 40:413-25. [PMID: 25972201 DOI: 10.2131/jts.40.413] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
It is well-known that indomethacin (the cyclooxygenase 1 & 2 inhibitor) and RU486 (or mifepristone, the progesterone receptor antagonist) block follicular rupture in rats. To characterize genetic alterations in unruptured follicles, gene expression profiles in ovarian follicle were analyzed in indomethacin- and RU486-treated female Sprague-Dawley rats. Ovaries are collected at 22:00 on the proestrus day and 10:00 on the following estrus day after a single dose of indomethacin and RU486. Histopathologically, changes depicting responses to LH surge were observed in ovaries, uteri and vagina. Total RNA was extracted from pre-ovulatory follicles or unruptured follicles collected by laser microdissection and analyzed by Genechip(®). Among genes showing statistically significant changes compared to control groups, following changes were considered relevant to induction of unruptured follicles. In indomethacin-treated rats, Wnt4 was down-regulated, suggesting effect on tissue integrity and steroid genesis. In RU486-treated rats, Adamts1, Adamts9, Edn2, Ednra, Lyve1, Plat, and Pparg were down-regulated. These changes suggest effects on proteolysis for extra cellular matrix or surrounding tissue (Adamts1 & 9, and Plat), constriction of smooth muscle surrounding follicles (Edn2, Ednra, and Pparg), follicular fluid (Lyve1), and angiogenesis (Pparg). Down-regulation of angiogenesis related genes (Angpt2, Hmox1, and Vegfa) was observed in both treatment groups. Here, we clarify genetic alterations induced by the inhibition of cyclooxygenase or progesterone receptor.
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Kotaki T, Nishimura N, Ozawa M, Fujimori A, Muraoka H, Ogawa S, Korenaga T, Suzuki E, Oishi Y, Shibasaki Y. Synthesis of highly refractive and highly fluorescent rigid cyanuryl polyimines with polycyclic aromatic hydrocarbon pendants. Polym Chem 2016. [DOI: 10.1039/c5py01920f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of rigid cyanuryl polyimines, polyguanamines (PGs) bearing polycyclic aromatic hydrocarbon pendants were successfully synthesized from 2-substituted 4,6-dichloro-1,3,5-triazine and aromatic diamine monomers.
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Hirano Y, Hirabara S, Isono M, Oishi Y, Kojima T, Ishiguro N. SAT0138 Analysis of Treatment Retention Rate of Biologics Therapy in Patients with Rheumatoid Arthritis – A Single Center Cohort Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hirano Y, Hirabara S, Isono M, Oishi Y, Kojima T, Ishiguro N. FRI0287 Daily Teriparatide Treatment for Two Years on Osteoporosis in Patients with Rheumatoid Arthritis – Impact of Concomitant Drugs (Prednisolone and Biologics) on Effects of Teriparatide. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hirano Y, Hirabara S, Isono M, Oishi Y, Kojima T, Ishiguro N. AB0488 Influences of 2-Year Tocilizumab Therapy on Disease Activity, Quality of Life, Prevention of Joint Damage and Reduction of Concomitant Drugs (Prednisolone and Methotrexate) in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Kojima T, Hirano Y, Yabe Y, Takahashi N, Hayashi M, Matsubara H, Hirabara S, Oishi Y, Ishiguro N. FRI0282 Predictive Factors for Suppressing Progression of Cervical Lesions in Patients with Rheumatoid Arthritis Receiving Infliximab Treatment from Japanese Tbcr. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hirano Y, Oishi Y, Takemoto G, Okada T, Kojima T, Ishiguro N. OP0276 Efficacy of Daily Teriparatide for Two Years on Osteoporosis in Patients with Rheumatoid Arthritis – is IT Appropreate to Combine Daily Teriparatide and Biological Agents? Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Kojima T, Hirano Y, Yabe Y, Takahashi N, Hirabara S, Iwase H, Oishi Y, Ishiguro N. AB0452 Efficacy of TOCILIZUMAB for Suppressing Radiographic Progression of Cervical Lesions in Patients with Rheumatoid Arthritis from Japanese Tbcr. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Okada T, Hirano Y, Oishi Y, Takemoto G, Ojima M. AB0361 Influence of Total Knee Arthroplasty on Various Parameters about Local and General Disease Activity in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Nakamura J, Nagatomo T, Oishi Y, Ikedo Y, Strasser P, Saito N, Miyazaki K, Yokoyama K, Okamura K, Miyake Y, Makimura S, Nishiyama K, Shimomura K, Kawamura N, Koda A, Higemoto W, Wada S, Iwasaki M, Torikai E. Ultra Slow Muon Microscope at MUSE / J-PARC. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/502/1/012042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kainoh Y, Oishi Y. Source of sex pheromone of the egg-larval parasitoid,Ascogaster reticulatus Watanabe (Hymenoptera: Braconidae). J Chem Ecol 2013; 19:963-9. [PMID: 24249077 DOI: 10.1007/bf00992531] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/1992] [Accepted: 01/06/1993] [Indexed: 11/29/2022]
Abstract
A sex pheromone ofAscogaster reticulatus Watanabe (Hymenoptera: Braconidae), identified as (Z)-9-hexadecenal, elicits males' antennal matesearching behavior. In order to localize the source of sex pheromone production, each body part was separated and extracted with hexane and then subjected to 9-cm Petri dish bioassay. The highest activity was found in thorax extract. Among legs, wings, and thorax, legs have the highest activity. Among fore, middle, and hind legs, hind legs have the highest activity. Among coxa and trochanter, femur, tibia, and tarsus, tibia has the highest activity. From these results, the presence of a tibial sex pheromone gland was suggested.
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Affiliation(s)
- Y Kainoh
- Institute of Agriculture and Forestry University of Tsukuba, Tsukuba, 305, Ibaraki, Japan
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Hirano Y, Oishi Y, Mieno T, Yamauchi K. AB0446 A comparative study of quantiferon TB-2G and 3G as screening examination for latent mycobacterium tuberculosis infection in patients with rheumatoid arthritis before treatment with biologics. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hirano Y, Oishi Y, Yamauchi K. FRI0178 A comparative study of clinical composite measures (DAS28, SDAI, CDAI, BOOLEAN) using patients with rheumatoid arthritis treated with anti-TNF agents. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hirano Y, Takahashi N, Kaneko A, Kida D, Oishi Y, Kojima T, Ishiguro N. AB0591 Analysis of rheumatoid arthritis patients who were treated with abatacept with rapid effectiveness from japanese multicenter registry system of biological therapy. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Kojima T, Hirano Y, Yabe Y, Takahashi N, Funahashi K, Oishi Y, Ishiguro N. AB0336 Radiographic progression of cervical lesions in patients with rheumatoid arthritis receiving tocilizumab treatment comparison with infliximab treatment from japanese tbcr. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hirano Y, Oishi Y, Yamauchi K, Mieno T. AB0614 Comparison of efficacy of tacrolimus among defferent prescribing patterns in patients with rheumtoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hirano Y, Oishi Y, Yamauchi K, Mieno T. AB0503 A comparative study of early clinical efficacy among three anti-TNF agents – drag race study. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Oishi Y, Hirano Y, Kojima T, Ishiguro N. AB0366 Radiographic outcome in patients with early japanese rheumatoid arthritis receiving conventional dmards over 15 years of follow-up. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hirano Y, Takahashi N, Kaneko A, Kida D, Oishi Y, Kojima T, Ishiguro N. AB0339 A retrospective study on rapidness of efficacy in abatacept terapy in patients with rheumatoid arthritis from japanese multicenter registry system. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Kojima T, Hirano Y, Takahashi N, Funahashi K, Kato D, Matsubara H, Hattori Y, Yabe Y, Oishi Y, Ishiguro N. AB0585 Radiographic progression of cervical lesions and hands in patients with rheumatoid arthritis receiving tocilizumab treatment from japanese tbc registry. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hirano Y, Oishi Y, Takemoto G, Kojima T, Ishiguro N. THU0411 Efficacy of Teriparatide on Osteoporosis in Patients with Rheumatoid Arthritis ~is it Appropriate to Prescribe Teriparatide Together with Biological Agents? Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Kojima T, Hirano Y, Takahashi N, Funahashi K, Oishi Y, Ishiguro N. FRI0206 Radiographic progression of cervical lesions and hands in patients with rheumatoid arthritis receiving infliximab treatment from japanese tbcr ; three years of follow-up. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kanayama Y, Kojima T, Hirano Y, Takahashi N, Funahashi K, Kato D, Matsubara H, Hattori Y, Oishi Y, Ishiguro N. SAT0155 Radiographic progression of cervical lesions and hands in patients with rheumatoid arthritis receiving infliximab treatment from japanese tbc registry; two years of follow-up. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Takeuchi-Yorimoto A, Noto T, Yamada A, Miyamae Y, Oishi Y, Matsumoto M. Persistent fibrosis in the liver of choline-deficient and iron-supplemented L-amino acid-defined diet-induced nonalcoholic steatohepatitis rat due to continuing oxidative stress after choline supplementation. Toxicol Appl Pharmacol 2013; 268:264-77. [PMID: 23481610 DOI: 10.1016/j.taap.2013.01.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/27/2013] [Accepted: 01/29/2013] [Indexed: 12/30/2022]
Abstract
Nonalcoholic steatohepatitis (NASH) is characterized by combined pathology of steatosis, lobular inflammation, fibrosis, and hepatocellular degeneration, with systemic symptoms of diabetes or hyperlipidemia, all in the absence of alcohol abuse. Given the therapeutic importance and conflicting findings regarding the potential for healing the histopathologic features of NASH in humans, particularly fibrosis, we investigated the reversibility of NASH-related findings in Wistar rats fed a choline-deficient and iron-supplemented l-amino acid-defined (CDAA) diet for 12weeks, with a recovery period of 7weeks, during which the diets were switched to a choline-sufficient and iron-supplemented l-amino acid-defined (CSAA) one. Analysis showed that steatosis and inflammation were significantly resolved by the end of the recovery period, along with decreases in AST and ALT activities within 4weeks. In contrast, fibrosis remained even after the recovery period, to an extent similar to that in continuously CDAA-fed animals. Real-time reverse transcriptase-polymerase chain reaction, Western blot, and immunohistochemical investigations revealed that expression of some factors indicating oxidative stress (CYP2E1, 4-HNE, and iNOS) were elevated, whereas catalase and SOD1 were decreased, and a hypoxic state and CD34-positive neovascularization were evident even after the recovery period, although the fibrogenesis pathway by activated α-SMA-positive hepatic stellate cells via TGF-β and TIMPs decreased to the CSAA group level. In conclusion, persistent fibrosis was noted after the recovery period of 7weeks, possibly due to sustained hypoxia and oxidative stress supposedly caused by capillarization. Otherwise, histopathological features of steatosis and inflammation, as well as serum AST and ALT activities, were recovered.
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