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Kitajima H, Hirota M, Osawa K, Iwai T, Saruta J, Mitsudo K, Ogawa T. Optimization of blood and protein flow around superhydrophilic implant surfaces by promoting contact hemodynamics. J Prosthodont Res 2023; 67:568-582. [PMID: 36543189 DOI: 10.2186/jpr.jpr_d_22_00225] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
PURPOSE We examined blood and protein dynamics potentially influenced by implant threads and hydrophilic/hydrophobic states of implant surfaces. METHODS A computational fluid dynamics model was created for a screw-shaped implant with a water contact angle of 70° (hydrophobic surface) and 0° (superhydrophilic surface). Movements and density of blood and fibrinogen as a representative wound healing protein were visualized and quantified during constant blood inflow. RESULTS Blood plasma did not occupy 40-50% of the implant interface or the inside of threads around hydrophobic implants, whereas such blood voids were nearly completely eliminated around superhydrophilic implants. Whole blood field vectors were disorganized and random within hydrophobic threads but formed vortex nodes surrounded by stable blood streams along the superhydrophilic implant surface. The averaged vector within threads was away from the implant surface for the hydrophobic implant and towards the implant surface for the superhydrophilic implant. Rapid and massive whole blood influx into the thread zone was only seen for the superhydrophilic implant, whereas a line of conflicting vectors formed at the entrance of the thread area of the hydrophobic implant to prevent blood influx. The fibrinogen density was up to 20-times greater at the superhydrophilic implant interface than the hydrophobic one. Fibrinogen density was higher at the interface than outside the threads only for the superhydrophilic implant. CONCLUSIONS Implant threads and surface hydrophilicity have profound effects on vector and distribution of blood and proteins. Critically, implant threads formed significant biological voids at the interface that were negated by superhydrophilicity-induced contact hemodynamics.
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Affiliation(s)
- Hiroaki Kitajima
- Weintraub Center for Reconstructive Biotechnology, Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, USA
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Makoto Hirota
- Weintraub Center for Reconstructive Biotechnology, Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, USA
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
- Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center, Yokohama, Japan
| | - Kohei Osawa
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Toshinori Iwai
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Juri Saruta
- Weintraub Center for Reconstructive Biotechnology, Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, USA
- Department of Education Planning, School of Dentistry, Kanagawa Dental University, Yokosuka, Japan
| | - Kenji Mitsudo
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | - Takahiro Ogawa
- Weintraub Center for Reconstructive Biotechnology, Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, USA
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Kitajima H, Hirota M, Osawa K, Iwai T, Mitsudo K, Saruta J, Ogawa T. The Effects of a Biomimetic Hybrid Meso- and Nano-Scale Surface Topography on Blood and Protein Recruitment in a Computational Fluid Dynamics Implant Model. Biomimetics (Basel) 2023; 8:376. [PMID: 37622981 PMCID: PMC10452410 DOI: 10.3390/biomimetics8040376] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/04/2023] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
The mechanisms underlying bone-implant integration, or osseointegration, are still incompletely understood, in particular how blood and proteins are recruited to implant surfaces. The objective of this study was to visualize and quantify the flow of blood and the model protein fibrinogen using a computational fluid dynamics (CFD) implant model. Implants with screws were designed with three different surface topographies: (1) amorphous, (2) nano-trabecular, and (3) hybrid meso-spikes and nano-trabeculae. The implant with nano-topography recruited more blood and fibrinogen to the implant interface than the amorphous implant. Implants with hybrid topography further increased recruitment, with particularly efficient recruitment from the thread area to the interface. Blood movement significantly slowed at the implant interface compared with the thread area for all implants. The blood velocity at the interface was 3- and 4-fold lower for the hybrid topography compared with the nano-topography and amorphous surfaces, respectively. Thus, this study for the first time provides insights into how different implant surfaces regulate blood dynamics and the potential advantages of surface texturization in blood and protein recruitment and retention. In particular, co-texturization with a hybrid meso- and nano-topography created the most favorable microenvironment. The established CFD model is simple, low-cost, and expected to be useful for a wide range of studies designing and optimizing implants at the macro and micro levels.
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Affiliation(s)
- Hiroaki Kitajima
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA (M.H.); (J.S.)
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan; (K.O.); (T.I.); (K.M.)
| | - Makoto Hirota
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA (M.H.); (J.S.)
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
- Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Kohei Osawa
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan; (K.O.); (T.I.); (K.M.)
| | - Toshinori Iwai
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan; (K.O.); (T.I.); (K.M.)
| | - Kenji Mitsudo
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan; (K.O.); (T.I.); (K.M.)
| | - Juri Saruta
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA (M.H.); (J.S.)
- Department of Education Planning, School of Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka 238-8580, Japan
| | - Takahiro Ogawa
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA (M.H.); (J.S.)
- Division of Regenerative and Reconstructive Sciences, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
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Nakakaji R, Umemura M, Osawa K, Ishikawa S, Mitsudo K, Ishikawa Y. Abstract 4835: EP4 increases the mitochondrial respiration and promotes cell migration in oral cancer. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-4835] [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: 04/07/2023]
Abstract
Abstract
Introduction: EP4 is one of the prostaglandin E2 (PGE2) receptors. We previously reported that EP4 promoted cell migration via Ca2+ signaling, however the underlying mechanism has remained unclear. In Ca2+ signaling, Store-operated Ca2+entry (SOCE) is a major mechanism of Ca2+ import from the extracellular to the intracellular space. Orai1, one of the selective Ca2+ channels, plays an important role in SOCE. We focused on the correlation with EP4 and Orai1. Additionally, we found that EP4 promoted the phosphorylation of calcium/calmodulin-dependent protein kinase kinase 2 (CaMKK2) and AMP-activated protein kinase (AMPK) located downstream of CaMKK2, i.e., cell energy regulators. AMPK activation can control positively or negatively the cellular adenosine triphosphate (ATP) supply. Therefore, we investigated how EP4 regulated the mitochondrial function via Ca2+ and promoted the cell migration in oral cancer cells.
Materials and Methods: HSC-3, human tongue squamous cell carcinoma cell line was used. ONO-AE1-437 was used as EP4 agonist. HSC-3 cells were transduced with Orai1 shRNA, and control shRNA using lentivirus. The migration ability was evaluated by scratch assay. Measurement of intracellular Ca2+ concentration was measured using Fura-2. Immunoprecipitation was performed to evaluate the interaction between EP4 and Orai1. XF Cell Mito Stress Test and XF Real-Time ATP Rate Assay were performed to evaluate the mitochondrial aspiration and the ATP production using Extracellular Flux Analyzer.
Results: Scratch assay showed EP4 promoted cell migration in oral cancer cells (n=4, p<0.05). In contrast, Orai1 knockdown negated EP4-induced cell migration. EP4 rapidly increased the intracellular Ca2+ concentration, while Orai1 knockdown negated EP4-indued Ca2+ increase (n=4, p<0.05). Immunoprecipitation showed that EP4 was colocalized and formed complexes with Orai1 (n=4, p<0.05). These results indicated that EP4 promoted the cell migration via Ca2+ signaling through Orai1. EP4 increased the maximal respiration 3h after the stimulation (n=6, p<0.05). ATP production rate shifted mitoATP dominant. These data indicated that EP4 increased the mitochondrial function and the respiratory capacity, potentially regulating its energy supply. These results demonstrated that EP4 promoted mitochondria respiration and then increased the energy production from mitochondria in oral cancer cells.
Conclusion: We concluded that EP4 regulated the mitochondrial function via Ca2+ through Orai1 and promoted the cell migration in oral cancer cells.
Citation Format: Rina Nakakaji, Masanari Umemura, Kohei Osawa, Soichiro Ishikawa, Kenji Mitsudo, Yoshihiro Ishikawa. EP4 increases the mitochondrial respiration and promotes cell migration in oral cancer. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 4835.
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Affiliation(s)
- Rina Nakakaji
- 1Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Masanari Umemura
- 1Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kohei Osawa
- 1Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Soichiro Ishikawa
- 1Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kenji Mitsudo
- 2Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yoshihiro Ishikawa
- 1Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Ishikawa S, Umemura M, Nakakaji R, Nagasako A, Nagao K, Mizuno Y, Suzuki F, Osawa K, Kioi M, Mitsudo K, Ishikawa Y. Abstract 3619: EP4 promoted cell migration via mitochondrial biogenesis in oral cancer cells. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-3619] [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: 04/07/2023]
Abstract
Abstract
Introduction: Lymph node metastasis caused by migration of oral cancer cells is an important prognostic factor. We previously reported that EP4, a prostaglandin E2 (PGE2) receptor, regulates the cell migration in oral cancer cells via Ca2+ signaling. However, how Ca2+ signaling regulates cell migration remains unclear. The intracellular Ca2+ regulates a variety of signaling pathways, either directly or by forming complexes with proteins such as calmodulin (CaM), and then phosphorylates calcium/calmodulin-dependent protein kinase kinase 2 (CaMKK2). Furthermore, Ca2+ signaling is directly or indirectly involved in cancer cell proliferation and migration. Therefore, we hypothesized that EP4 regulates the cell migration via CaMKK2 and its downstream signaling in oral cancer.
Materials and Methods: Human gingival fibroblasts, HGnF and Human tongue squamous cell carcinoma cell lines, HSC-3 were used. EP4 agonist (ONO-AE1-437) and CaMKK2 inhibitor (STO-609) were used. HSC-3 cells were transduced with CaMKK2 shRNA, and scramble control shRNA using lentivirus. The protein expressions were evaluated by western blotting. The intracellular calcium concentrations were measured using Fura-2, the Fluorescent Ca2+ Indicator. The cell migration ability was evaluated by scratch assay. Immunocytochemistry was performed to evaluate the lamellipodium. The mRNA transcriptions of the mitochondrial associated genes were evaluated by real-time qPCR. The intracellular adenosine triphosphate (ATP) production and the reactive oxygen species (ROS) production were also evaluated by luciferase activity assay and DCFH-DA staining.
Results: EP4 protein expression of HSC-3 cells was higher than that of HGnF cells (n=4, p<0.001). EP4 agonist rapidly increased the intracellular calcium in HSC-3 cells but not in HGnF cells (n=4, p<0.001). EP4 agonist also promoted the cell migration and increased the lamellipodia formation in HSC-3 cells (n=3, p<0.001). Furthermore, EP4 agonist promoted the phosphorylation of CaMKK2 and AMP-activated protein kinase (AMPK) (n=4, p<0.001). In contrast, CaMKK2 inhibitor and CaMKK2 knockdown suppressed EP4-stimulated cell migration and AMPK phosphorylation (n=4, p<0.001). Furthermore, EP4 agonist increased the expression of the transcriptional coactivator PGC1-α, mtDNA and mitochondrial transcription factor A (TFAM) (n=4, p<0.01). Furthermore, EP4 agonist increased the intracellular ATP production and the ROS production (n=6, p<0.01). Taken together, EP4 regulated the mitochondrial biogenesis via CaMKK2 and AMPK, and promoted the cell migration in oral cancer.
Conclusion: EP4/CaMKK2/AMPK pathway is a novel signal transduction in oral cancer and may be a new target for oral cancer therapy.
Citation Format: Soichiro Ishikawa, Masanari Umemura, Rina Nakakaji, Akane Nagasako, Kagemichi Nagao, Yuto Mizuno, Fumina Suzuki, Kohei Osawa, Mitomu Kioi, Kenji Mitsudo, Yoshihiro Ishikawa. EP4 promoted cell migration via mitochondrial biogenesis in oral cancer cells. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3619.
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Affiliation(s)
| | | | - Rina Nakakaji
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
| | - Akane Nagasako
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
| | | | - Yuto Mizuno
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
| | - Fumina Suzuki
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
| | - Kohei Osawa
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
| | - Mitomu Kioi
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
| | - Kenji Mitsudo
- 1Yokohama City Univ. School of Medicine, Yokohama, Japan
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Miyamoto M, Miyoshi T, Osawa K, Mori A, Oka T, Ito H. Efficacy of early intravenous landiolol, an ultrashort-acting beta-blocker on infarct size and its safety in patients with myocardial infarction undergoing primary PCI: a randomized, controlled study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1576] [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
Previous clinical studies showed that early intravenous metoprolol before reperfusion in patients with ST-elevation myocardial infarction (STEMI) undergoing primary PCI reduced infarct size. However, intravenous beta-blockers in acute phase of STEMI can be associated with adverse effects such as cardiogenic shock and atrioventricular block. Landiolol is an ultrashort-acting beta-blocker with a half-life of 3 min that is eight times more cardioselective than esmolol.
Purpose
We evaluate the efficacy of intravenous infusion of landiolol on infarct size and its safety in STEMI patients undergoing primary PCI.
Methods
This study is a multicenter randomized control trial. A total of 47 patients with Killip class II or less STEMI undergoing PCI within 12 hours of symptoms onset were randomized to receive intravenous landiolol (n=23) or not (control, n=24). Patients allocated to landiolol group delivered an intravenous continuous dose of 3μg/min/kg before reperfusion and then continued until a total dose of 50mg. All patients started oral metoprolol or carvedilol within 12 hours. The primary end point was myocardial salvage index (MSI) on magnetic resonance imaging performed 5 to 7 days after PCI. MSI was defined as the difference between the area at risk and the area of necrosis analyzed using a commercial software.
Results
Magnetic resonance imaging was performed in 35 patients (17 patients in landiolol group and 18 patients in the control group), and ischemia duration time was 229 minutes in the landiolol group and the 242 minutes in control. In adjusting for confounding variables, the areas of myocardium at risk were not difference in both groups (54.4g in the landiolol group, and 46.8g in the control group; p=0.31). However, MSI in the landiolol group was significantly reduced than that in the control group (36.8% and 57.0%; p<0.001).
In both group blood pressure was not difference in recruitment (142mmHg in landiolol group, and 144 in control) and starting PCI (163mmHg in landiolol group, and 165 in control). Regarding safety, the composite of death, malignant ventricular arrhythmia, cardiogenic shock, and atrioventricular block at 24 hours did not differ between the landiolol and the control groups (8.7% and 8.3%, respectively, p=0.93).
Conclusion
Early intravenous landiolol before starting primary PCI reduced infarct size in STEMI patients without significant hemodynamic adverse effects.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- M Miyamoto
- Okayama University Hospital, Department of Cardiovascular Therapeutics, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Therapeutics, Okayama, Japan
| | - K Osawa
- Japanese Red Cross Okayama Hospital, Cardiology, Okayama, Japan
| | - A Mori
- Kagawa Rosai Hospital, Cardiology, Kagawa, Japan
| | - T Oka
- Tsuyama central Hospital, Cardiology, Okayama, Japan
| | - H Ito
- Okayama University Hospital, Department of Cardiovascular Therapeutics, Okayama, Japan
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Shigemura K, Kitagawa K, Osawa K, Nishimoto K, Yi-Te C, Sung S, Chen K, Fujisawa M. Molecular characteristics of carbapenem-resistant Klebsiella pneumoniae from urinary tract infections. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32690-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Osawa K, Tagaya H, Kondo SI. Naked Eye Detection of Anions by 2,2′-Bianthracene Derivative Bearing Urea Groups in Various Organic Solvents. CHEM LETT 2020. [DOI: 10.1246/cl.190924] [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: 11/12/2022]
Affiliation(s)
- Kohei Osawa
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hideyuki Tagaya
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shin-ichi Kondo
- Department of Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-Machi, Yamagata 990-8560, Japan
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Osawa K, Umemura M, Nakakaji R, Tanaka R, Islam RM, Nagasako A, Fujita T, Yokoyama U, Koizumi T, Mitsudo K, Ishikawa Y. Prostaglandin E 2 receptor EP4 regulates cell migration through Orai1. Cancer Sci 2019; 111:160-174. [PMID: 31755615 PMCID: PMC6942437 DOI: 10.1111/cas.14247] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 12/17/2022] Open
Abstract
The EP4 prostanoid receptors are one of four receptor subtypes for prostaglandin E2 (PGE2 ). Therefore, EP4 may play an important role in cancer progression. However, little information is available regarding their function per se, including migration and the cellular signaling pathway of EP4 in oral cancer. First, we found that mRNA and protein expression of EP4 was abundantly expressed in human-derived tongue squamous cell carcinoma cell lines HSC-3 and OSC-19. The EP4 agonist (ONO-AE1-437) significantly promoted cell migration in HSC-3 cells. In contrast, knockdown of EP4 reduced cell migration. Furthermore, we confirmed that knockdown of EP4 suppressed metastasis of oral cancer cells in the lungs of mice in vivo. Therefore, we focused on the mechanism of migration/metastasis in EP4 signaling. Interestingly, EP4 agonist significantly induced intracellular Ca2+ elevation not in only oral cancer cells but also in other cells, including normal cells. Furthermore, we found that EP4 activated PI3K and induced Ca2+ influx through Orai1 without activation of store depletion and stromal interaction molecule 1 (STIM1). Immunoprecipitation showed that EP4 formed complexes with Orai1 and TRPC1, but not with STIM. Moreover, the EP4 agonist ONO-AE1-437 phosphorylated ERK and activated MMP-2 and MMP-9. Knockdown of Orai1 negated EP4 agonist-induced ERK phosphorylation. Taken together, our data suggested that EP4 activated PI3K and then induced Ca2+ influx from the extracellular space through Orai1, resulting in ERK phosphorylation and promoting cell migration. Migration is regulated by EP4/PI3K/Orai1 signaling in oral cancer.
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Affiliation(s)
- Kohei Osawa
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Masanari Umemura
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Rina Nakakaji
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Ryo Tanaka
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Rafikul Md Islam
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Akane Nagasako
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Takayuki Fujita
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Utako Yokoyama
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Physiology, Tokyo Medical University Graduate School of Medicine, Tokyo, Japan
| | - Toshiyuki Koizumi
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kenji Mitsudo
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yoshihiro Ishikawa
- Cardiovascular Research Institute, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Ihdayhid AR, Norgaard BL, Khav N, Gaur S, Leipsic J, Nerlekar N, Osawa K, Miyoshi T, Jensen J, Kimura T, Shiomi H, Erglis A, Oldroyd K, Achenbach S, Ko B. P2238Prognostic value and incremental benefit of ischaemic myocardial burden subtended by non-invasive CT-derived fractional flow reserve (FFRCT) significant stenoses. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0716] [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
Fractional flow reserve derived from CT-coronary angiography (FFRCT) accurately identifies ischaemic vessels which may be associated with clinical outcomes. Its predictive value in grey zone FFRCT values between 0.7–0.8 is not defined. The technique permits estimation of burden of ischaemic myocardium subtended by FFRCT significant vessels.
Purpose
To evaluate the prognostic value and incremental benefit of FFRCT defined ischaemic myocardial burden when compared to FFRCT alone.
Methods
This is a subanalysis of NXT (Analysis of Coronary Blood-Flow Using CTA:Next-Steps), a prospective study of stable coronary artery disease (CAD) patients referred for invasive angiography (ICA) undergoing invasive FFR, CTA and FFRCT in whom treating physicians had been blinded to FFRCT results. Primary endpoint, defined as a composite of non-fatal myocardial infarction and any revascularisation, was determined in 206 patients (age 64±9.5 years, 64% male) and 618 vessels. Burden of ischaemic myocardium was defined as percentage of myocardium subtended beyond the point at which a vessel's FFRCT becomes ≤0.8 as estimated by APPROACH score (FFRCT-APPROACH). In significant FFRCT vessels, the predictive value and incremental benefit of FFRCT-APPROACH was compared with significant FFRCT (≤0.8) for primary endpoint as measured by area under the receiver operator characteristic curve (AUC). Significant ischaemic myocardial burden was defined as >10%. The incidence and relationship between the primary endpoint with each 10% increase in FFRCT-APPROACH and 0.05-unit decrease in FFRCT values ≤0.8 was determined.
Results
Significant FFRCT was identified in 52.9% of patients (109/206) and 29.3% of vessels (181/618). At 4.7 years median follow-up the incidence of the primary endpoint in vessels with significant FFRCT-APPROACH was 58.9% (96/163) which was comparable with vessels with significant FFRCT (55.2%,100/181; P=0.50). The predictive value of FFRCT-APPROACH for the primary endpoint was comparable with FFRCT (AUC 0.72 [95% CI 0.65–0.79] vs 0.71 [0.63–0.78], P=0.79). When combined, there was significant predictive improvement compared with FFRCT alone (AUC 0.77 [0.70–0.84]; P=0.01). The largest incremental benefit upon FFRCT was observed in vessels with FFRCT values in the grey zone between 0.70–0.80 (AUC 0.76 [0.65–0.86] vs 0.62 [0.48–0.74]; P<0.01). Each 10% increase in FFRCT-APPROACH (Adjusted-HR 1.36; 95% CI 1.16–1.60; P<0.001) and each 0.05-unit FFRCT decrease (Adjusted-HR 1.42; 1.19–1.70; P<0.001) were independently associated with significant increase in the incidence of the primary-endpoint.
Conclusion
In patients with stable CAD referred for ICA, the burden of ischaemic myocardium subtended by FFRCT significant vessels predicted non-fatal myocardial infarction and future revascularisation. This provided significant incremental benefit when used in combination with FFRCT particularly at FFRCT values in the grey zone between 0.7 to 0.8.
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Affiliation(s)
- A R Ihdayhid
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - B L Norgaard
- Aarhus University Hospital, Department of Cardiology, Aarhus, Denmark
| | - N Khav
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Gaur
- Aarhus University Hospital, Department of Cardiology, Aarhus, Denmark
| | - J Leipsic
- University of British Columbia, Department of Radiology, Vancouver, Canada
| | - N Nerlekar
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - K Osawa
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - J Jensen
- Aarhus University Hospital, Department of Cardiology, Aarhus, Denmark
| | - T Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - H Shiomi
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - A Erglis
- Paul Stradins Clinical University Hospital, Latvian Centre of Cardiology, Riga, Latvia
| | - K Oldroyd
- Golden Jubilee National Hospital, West of Scotland Heart and Lung Centre, Clydebank, United Kingdom
| | - S Achenbach
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - B Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
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10
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Awano H, Nagai M, Shirakawa T, Osawa K, Lee T, Takeshima Y, Nishio H, Matsuo M, Iijima K. SMA BIOMARKERS. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.383] [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: 10/25/2022]
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11
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Abstract
Silanediols possess unique and complementary catalytic activity in reactions that are likely to proceed through anion binding. This article directly compares silanediols, thioureas, and squaramides in three separate anion-binding processes. The catalytic abilities of select members of each family are directly correlated to association constant.
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Affiliation(s)
- Jonathan W. Attard
- Worcester Polytechnic Institute, Department of Chemistry and Biochemistry, Worcester, MA 01609, USA
| | - Kohei Osawa
- Yamagata University, Department of Science, Faculty of Science, Yamagata, Yamagata 990-8560, Japan
| | - Yong Guan
- Worcester Polytechnic Institute, Department of Chemistry and Biochemistry, Worcester, MA 01609, USA
| | - Jessica Hatt
- Worcester Polytechnic Institute, Department of Chemistry and Biochemistry, Worcester, MA 01609, USA
| | - Shin-ichi Kondo
- Yamagata University, Department of Science, Faculty of Science, Yamagata, Yamagata 990-8560, Japan
| | - Anita Mattson
- Worcester Polytechnic Institute, Department of Chemistry and Biochemistry, Worcester, MA 01609, USA
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12
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Affiliation(s)
- Kohei Osawa
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hideyuki Tagaya
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shin-ichi Kondo
- Department of Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata City, Yamagata 990-8560, Japan
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13
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Hayashi Y, Osawa K, Nakakaji R, Minamiyama S, Ohashi N, Ohya T, Iida M, Iwai T, Ozawa T, Oguri S, Koizumi T, Hirota M, Kioi M, Hata M, Mitsudo K. Prognostic factors and treatment outcomes of advanced maxillary gingival squamous cell carcinoma treated by intra-arterial infusion chemotherapy concurrent with radiotherapy. Head Neck 2019; 41:1777-1784. [PMID: 30694002 DOI: 10.1002/hed.25607] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/20/2018] [Accepted: 12/10/2018] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate the prognostic factors and treatment outcomes of advanced maxillary gingival squamous cell carcinoma (SCC) treated with intra-arterial infusion chemotherapy concurrent with radiotherapy. METHODS A total of 46 patients were reviewed retrospectively in this study. The treatment schedule comprised intra-arterial chemotherapy (total, 60 mg/m2 docetaxel and 150 mg/m2 cisplatin) and three-dimensional computed tomography based, daily conventional radiotherapy (total, 60 Gy/30 fr) for 6 weeks. RESULTS The median follow-up period was 40 months (range, 3-110 months). The 3-year overall survival and locoregional control rates for all patients were 64.3% and 84.3%, respectively. The OS rate of the patients with N0-1 was significantly higher than that of the patients with N ≥ 2 (P < .05). No grade 5 toxicities were observed. CONCLUSIONS Intra-arterial infusion chemotherapy concurrent with radiotherapy was effective for advanced maxillary gingival SCC.
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Affiliation(s)
- Yuichiro Hayashi
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Kohei Osawa
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Rina Nakakaji
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Shuhei Minamiyama
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Nobuhide Ohashi
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Takashi Ohya
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Masaki Iida
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Toshinori Iwai
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Tomomichi Ozawa
- Department of Dentistry and Oral Surgery, Yamato Municipal Hospital, Yamato City, Kanagawa, Japan
| | - Senri Oguri
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Toshiyuki Koizumi
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Makoto Hirota
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Mitomu Kioi
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Masaharu Hata
- Departments of Radiation Oncology, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
| | - Kenji Mitsudo
- Departments of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Yokohama City, Kanagawa, Japan
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14
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Miki T, Miyoshi T, Osawa K, Kohno K, Nakamura K, Itoh H. P5394N-3 polyunsaturated fatty acids added on a statin progress coronary artery calcium density rather than volume determined by computed tomography: comparison with a statin alone. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5394] [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)
- T Miki
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - K Osawa
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - K Kohno
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - K Nakamura
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - H Itoh
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
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15
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Ihdayhid AR, Norgaard BL, Gaur S, Leipsic J, Osawa K, Miyoshi T, Jensen J, Kimura T, Shiomi H, Erglis A, Jegere S, Oldroyd KG, Seneviratne S, Achenbach S, Ko BS. 3283Long-term prognostic value of non-invasive fractional flow reserve derived from coronary CT angiography (FFRct). Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3283] [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)
- A R Ihdayhid
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - B L Norgaard
- Aarhus University Hospital, Cardiology Department, Aarhus, Denmark
| | - S Gaur
- Aarhus University Hospital, Cardiology Department, Aarhus, Denmark
| | - J Leipsic
- University of British Columbia, Department of Radiology, Vancouver, Canada
| | - K Osawa
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - J Jensen
- Aarhus University Hospital, Cardiology Department, Aarhus, Denmark
| | - T Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - H Shiomi
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - A Erglis
- Paul Stradins Clinical University Hospital, Latvian Centre of Cardiology, Riga, Latvia
| | - S Jegere
- Paul Stradins Clinical University Hospital, Latvian Centre of Cardiology, Riga, Latvia
| | - K G Oldroyd
- Golden Jubilee National Hospital, West of Scotland Heart and Lung Centre, Clydebank, United Kingdom
| | - S Seneviratne
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Achenbach
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - B S Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
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16
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Kondo SI, Sato K, Matsuta Y, Osawa K. Chiral Recognition of Anions by Fluorescence Tetraamide-Based Receptors Bearing Hydroxy Groups from l-Serine and l-Threonine Residues. BCSJ 2018. [DOI: 10.1246/bcsj.20180028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shin-ichi Kondo
- Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Keisuke Sato
- Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Yuka Matsuta
- Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Kohei Osawa
- Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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17
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Osawa K, Iwai T, Sugiyama S, Kitajima H, Baba J, Oguri S, Hirota M, Tohnai I. Peripheral osteoma arising from the lateral surface of the mandibular ramus. Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology 2018. [DOI: 10.1016/j.ajoms.2018.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Miyamoto I, Yada N, Osawa K, Yoshioka I. Endocytoscopy for in situ real-time histology of oral mucosal lesions. Int J Oral Maxillofac Surg 2018; 47:896-899. [PMID: 29625719 DOI: 10.1016/j.ijom.2018.03.008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 01/26/2018] [Accepted: 03/13/2018] [Indexed: 12/14/2022]
Abstract
This study investigated the utility of endocytoscopy, a novel emerging endoscopic system, for in situ real-time histology of oral mucosal lesions. Endocytoscopy involves the use of a contact light microscopy system with 380-fold magnification. With the development of endoscopic instruments, it has become possible to observe the abnormal microvascular and capillary patterns of tumour cells. The resolution of the endoscopic image is improved in situ, and a more detailed diagnosis is possible. In this study, endocytoscopy along with other diagnostic modalities was used in nine patients. Normal mucous membranes and oral malignant lesions were observed. Endocytoscopy enabled the pathological diagnosis of oral malignancies in situ and the observation of both structural and cytological atypia. In the future, it is expected that pathological diagnoses will be made in situ by direct viewing of living cells. This technique has the potential to allow an 'optical biopsy'.
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Affiliation(s)
- I Miyamoto
- Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan.
| | - N Yada
- Division of Oral Pathology, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - K Osawa
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - I Yoshioka
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
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19
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Osawa K, Kobayashi S, Tanaka M. Synthesis of Sequence-Specific Polymers with Amide Side Chains via Regio-/Stereoselective Ring-Opening Metathesis Polymerization of 3-Substituted cis-Cyclooctene. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01829] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kohei Osawa
- Department
of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University,
4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shingo Kobayashi
- Department
of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University,
4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
- Institute
for Materials Chemistry and Engineering, Kyushu University, CE41 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
| | - Masaru Tanaka
- Department
of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University,
4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
- Institute
for Materials Chemistry and Engineering, Kyushu University, CE41 744 Motooka,
Nishi-ku, Fukuoka 819-0395, Japan
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20
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Miyoshi T, Osawa K, Ito H. Non-alcoholic fatty liver disease and coronary plaque characteristics detected by coronary ct angiography. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.171] [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: 11/28/2022]
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21
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Tsukamoto S, Mizuta T, Fujimoto M, Ohte S, Osawa K, Miyamoto A, Yoneyama K, Murata E, Machiya A, Jimi E, Kokabu S, Katagiri T. Smad9 is a new type of transcriptional regulator in bone morphogenetic protein signaling. Sci Rep 2014; 4:7596. [PMID: 25534700 PMCID: PMC4274517 DOI: 10.1038/srep07596] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Accepted: 12/03/2014] [Indexed: 01/23/2023] Open
Abstract
Smad1, Smad5 and Smad9 (also known as Smad8) are activated by phosphorylation by bone morphogenetic protein (BMP)-bound type I receptor kinases. We examined the role of Smad1, Smad5, and Smad9 by creating constitutively active forms (Smad(DVD)). Transcriptional activity of Smad9(DVD) was lower than that of Smad1(DVD) or Smad5(DVD), even though all three Smad(DVD)s associated with Smad4 and bound to the target DNA. The linker region of Smad9 was sufficient to reduce transcriptional activity. Smad9 expression was increased by the activation of BMP signaling, similar to that of inhibitory Smads (I-Smads), and Smad9 reduced BMP activity. In contrast to I-Smads, however, Smad9 did not inhibit the type I receptor kinase and suppressed the constitutively active Smad1(DVD). Smad9 formed complexes with Smad1 and bound to DNA but suppressed the transcription of the target gene. Taken together, our findings suggest that Smad9 is a new type of transcriptional regulator in BMP signaling.
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Affiliation(s)
- S. Tsukamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - T. Mizuta
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - M. Fujimoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - S. Ohte
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - K. Osawa
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - A. Miyamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - K. Yoneyama
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - E. Murata
- School of Medical Technology and Health, Faculty of Health and Medical Care, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - A. Machiya
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - E. Jimi
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu-shi, Fukuoka 803-8580, Japan
| | - S. Kokabu
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - T. Katagiri
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
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22
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Shigemura K, Takase R, Osawa K, Takaba K, Nomi M, Fujisawa M, Arakawa S. Emergence and prevention measures for multidrug resistant Pseudomonas aeruginosa in catheter-associated urinary tract infection in spinal cord injury patients. Spinal Cord 2014; 53:70-4. [DOI: 10.1038/sc.2014.154] [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] [Received: 01/14/2014] [Revised: 07/08/2014] [Accepted: 08/05/2014] [Indexed: 11/10/2022]
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Abdovic E, Abdovic S, Hristova K, Hristova K, Katova T, Katova T, Gocheva N, Gocheva N, Pavlova M, Pavlova M, Gurzun MM, Ionescu A, Canpolat U, Yorgun H, Sunman H, Sahiner L, Kaya E, Ozer N, Tokgozoglu L, Kabakci G, Aytemir K, Oto A, Gonella A, D'ascenzo F, Casasso F, Conte E, Margaria F, Grosso Marra W, Frea S, Morello M, Bobbio M, Gaita F, Seo H, Lee S, Lee J, Yoon Y, Park E, Kim H, Park S, Lee H, Kim Y, Sohn D, Nemes A, Domsik P, Kalapos A, Orosz A, Lengyel C, Forster T, Enache R, Muraru D, Popescu B, Calin A, Nastase O, Botezatu D, Purcarea F, Rosca M, Beladan C, Ginghina C, Canpolat U, Aytemir K, Ozer N, Yorgun H, Sahiner L, Kaya E, Oto A, Muraru D, Piasentini E, Mihaila S, Padayattil Jose' S, Peluso D, Ucci L, Naso P, Puma L, Iliceto S, Badano L, Cikes M, Jakus N, Sutherland G, Haemers P, D'hooge J, Claus P, Yurdakul S, Oner F, Direskeneli H, Sahin T, Cengiz B, Ercan G, Bozkurt A, Aytekin S, Osa Saez AM, Rodriguez-Serrano M, Lopez-Vilella R, Buendia-Fuentes F, Domingo-Valero D, Quesada-Carmona A, Miro-Palau V, Arnau-Vives M, Palencia-Perez M, Rueda-Soriano J, Lipczynska M, Piotr Szymanski P, Anna Klisiewicz A, Lukasz Mazurkiewicz L, Piotr Hoffman P, Kim K, Cho S, Ahn Y, Jeong M, Cho J, Park J, Chinali M, Franceschini A, Matteucci M, Doyon A, Esposito C, Del Pasqua A, Rinelli G, Schaefer F, Kowalik E, Klisiewicz A, Rybicka J, Szymanski P, Biernacka E, Hoffman P, Lee S, Kim W, Yun H, Jung L, Kim E, Ko J, Ruddox V, Norum I, Edvardsen T, Baekkevar M, Otterstad J, Erdei T, Edwards J, Braim D, Yousef Z, Fraser A, Melcher A, Reiner B, Hansen A, Strandberg L, Caidahl K, Wellnhofer E, Kriatselis C, Gerd-Li H, Furundzija V, Thnabalasingam U, Fleck E, Graefe M, Park Y, Moon J, Ahn T, Baydar O, Kadriye Kilickesmez K, Ugur Coskun U, Polat Canbolat P, Veysel Oktay V, Umit Yasar Sinan U, Okay Abaci O, Cuneyt Kocas C, Sinan Uner S, Serdar Kucukoglu S, Ferferieva V, Claus P, Rademakers F, D'hooge J, Le TT, Wong P, Tee N, Huang F, Tan R, Altman M, Logeart D, Bergerot C, Gellen B, Pare C, Gerard S, Sirol M, Vicaut E, Mercadier J, Derumeaux GA, Park TH, Park JI, Shin SW, Yun SH, Lee JE, Makavos G, Kouris N, Keramida K, Dagre A, Ntarladimas I, Kostopoulos V, Damaskos D, Olympios C, Leong D, Piers S, Hoogslag G, Hoke U, Thijssen J, Ajmone Marsan N, Schalij M, Bax J, Zeppenfeld K, Delgado V, Rio P, Branco L, Galrinho A, Cacela D, Abreu J, Timoteo A, Teixeira P, Pereira-Da-Silva T, Selas M, Cruz Ferreira R, Popa BA, Zamfir L, Novelli E, Lanzillo G, Karazanishvili L, Musica G, Stelian E, Benea D, Diena M, Cerin G, Fusini L, Mirea O, Tamborini G, Muratori M, Gripari P, Ghulam Ali S, Cefalu' C, Maffessanti F, Andreini D, Pepi M, Mamdoo F, Goncalves A, Peters F, Matioda H, Govender S, Dos Santos C, Essop M, Kuznetsov VA, Yaroslavskaya EI, Pushkarev GS, Krinochkin DV, Kolunin GV, Bennadji A, Hascoet S, Dulac Y, Hadeed K, Peyre M, Ricco L, Clement L, Acar P, Ding W, Zhao Y, Lindqvist P, Nilson J, Winter R, Holmgren A, Ruck A, Henein M, Illatopa V, Cordova F, Espinoza D, Ortega J, Cavalcante J, Patel M, Katz W, Schindler J, Crock F, Khanna M, Khandhar S, Tsuruta H, Kohsaka S, Murata M, Yasuda R, Tokuda H, Kawamura A, Maekawa Y, Hayashida K, Fukuda K, Le Tourneau T, Kyndt F, Lecointe S, Duval D, Rimbert A, Merot J, Trochu J, Probst V, Le Marec H, Schott J, Veronesi F, Addetia K, Corsi C, Lamberti C, Lang R, Mor-Avi V, Gjerdalen GF, Hisdal J, Solberg E, Andersen T, Radunovic Z, Steine K, Maffessanti F, Gripari P, Tamborini G, Muratori M, Fusini L, Ferrari C, Caiani E, Alamanni F, Bartorelli A, Pepi M, D'ascenzi F, Cameli M, Iadanza A, Lisi M, Reccia R, Curci V, Sinicropi G, Henein M, Pierli C, Mondillo S, Rekhraj S, Hoole S, Mcnab D, Densem C, Boyd J, Parker K, Shapiro L, Rana B, Kotrc M, Vandendriessche T, Bartunek J, Claeys M, Vanderheyden M, Paelinck B, De Bock D, De Maeyer C, Vrints C, Penicka M, Silveira C, Albuquerque E, Lamprea D, Larangeiras V, Moreira C, Victor Filho M, Alencar B, Silveira A, Castillo J, Zambon E, Iorio A, Carriere C, Pantano A, Barbati G, Bobbo M, Abate E, Pinamonti B, Di Lenarda A, Sinagra G, Salemi VMC, Tavares L, Ferreira Filho J, Oliveira A, Pessoa F, Ramires F, Fernandes F, Mady C, Cavarretta E, Lotrionte M, Abbate A, Mezzaroma E, De Marco E, Peruzzi M, Loperfido F, Biondi-Zoccai G, Frati G, Palazzoni G, Park TH, Lee JE, Lee DH, Park JS, Park K, Kim MH, Kim YD, Van 'T Sant J, Gathier W, Leenders G, Meine M, Doevendans P, Cramer M, Poyhonen P, Kivisto S, Holmstrom M, Hanninen H, Schnell F, Betancur J, Daudin M, Simon A, Carre F, Tavard F, Hernandez A, Garreau M, Donal E, Calore C, Muraru D, Badano L, Melacini P, Mihaila S, Denas G, Naso P, Casablanca S, Santi F, Iliceto S, Aggeli C, Venieri E, Felekos I, Anastasakis A, Ritsatos K, Kakiouzi V, Kastellanos S, Cutajar I, Stefanadis C, Palecek T, Honzikova J, Poupetova H, Vlaskova H, Kuchynka P, Linhart A, Elmasry O, Mohamed M, Elguindy W, Bishara P, Garcia-Gonzalez P, Cozar-Santiago P, Bochard-Villanueva B, Fabregat-Andres O, Cubillos-Arango A, Valle-Munoz A, Ferrer-Rebolleda J, Paya-Serrano R, Estornell-Erill J, Ridocci-Soriano F, Jensen M, Havndrup O, Christiansen M, Andersen P, Axelsson A, Kober L, Bundgaard H, Karapinar H, Kaya A, Uysal E, Guven A, Kucukdurmaz Z, Oflaz M, Deveci K, Sancakdar E, Gul I, Yilmaz A, Tigen MK, Karaahmet T, Dundar C, Yalcinsoy M, Tasar O, Bulut M, Takir M, Akkaya E, Jedrzejewska I, Braksator W, Krol W, Swiatowiec A, Dluzniewski M, Lipari P, Bonapace S, Zenari L, Valbusa F, Rossi A, Lanzoni L, Molon G, Canali G, Campopiano E, Barbieri E, Rueda Calle E, Alfaro Rubio F, Gomez Gonzalez J, Gonzalez Santos P, Cameli M, Lisi M, Focardi M, D'ascenzi F, Solari M, Galderisi M, Mondillo S, Pratali L, Bruno RM, Corciu A, Comassi M, Passera M, Gastaldelli A, Mrakic-Sposta S, Vezzoli A, Picano E, Perry R, Penhall A, De Pasquale C, Selvanayagam J, Joseph M, Simova II, Katova TM, Kostova V, Hristova K, Lalov I, D'ascenzi F, Pelliccia A, Natali B, Cameli M, Alvino F, Zorzi A, Corrado D, Bonifazi M, Mondillo S, Rees E, Rakebrandt F, Rees D, Halcox J, Fraser A, O'driscoll J, Lau N, Perez-Lopez M, Sharma R, Lichodziejewska B, Goliszek S, Kurnicka K, Kostrubiec M, Dzikowska Diduch O, Krupa M, Grudzka K, Ciurzynski M, Palczewski P, Pruszczyk P, Gheorghe L, Castillo Ortiz J, Del Pozo Contreras R, Calle Perez G, Sancho Jaldon M, Cabeza Lainez P, Vazquez Garcia R, Fernandez Garcia P, Chueca Gonzalez E, Arana Granados R, Zhao X, Xu X, Bai Y, Qin Y, Leren I, Hasselberg N, Saberniak J, Leren T, Edvardsen T, Haugaa K, Daraban AM, Sutherland G, Claus P, Werner B, Gewillig M, Voigt J, Santoro A, Ierano P, De Stefano F, Esposito R, De Palma D, Ippolito R, Tufano A, Galderisi M, Costa R, Fischer C, Rodrigues A, Monaco C, Lira Filho E, Vieira M, Cordovil A, Oliveira E, Mohry S, Gaudron P, Niemann M, Herrmann S, Strotmann J, Beer M, Hu K, Bijnens B, Ertl G, Weidemann F, Baktir A, Sarli B, Cicek M, Karakas M, Saglam H, Arinc H, Akil M, Kaya H, Ertas F, Bilik M, Yildiz A, Oylumlu M, Acet H, Aydin M, Yuksel M, Alan S, O'driscoll J, Gravina A, Di Fino S, Thompson M, Karthigelasingham A, Ray K, Sharma R, De Chiara B, Russo C, Alloni M, Belli O, Spano' F, Botta L, Palmieri B, Martinelli L, Giannattasio C, Moreo A, Mateescu A, La Carrubba S, Vriz O, Di Bello V, Carerj S, Zito C, Ginghina C, Popescu B, Nicolosi G, Antonini-Canterin F, Malev E, Omelchenko M, Vasina L, Luneva E, Zemtsovsky E, Cikes M, Velagic V, Gasparovic H, Kopjar T, Colak Z, Hlupic L, Biocina B, Milicic D, Tomaszewski A, Kutarski A, Poterala M, Tomaszewski M, Brzozowski W, Kijima Y, Akagi T, Nakagawa K, Ikeda M, Watanabe N, Ueoka A, Takaya Y, Oe H, Toh N, Ito H, Bochard Villanueva B, Paya-Serrano R, Fabregat-Andres O, Garcia-Gonzalez P, Perez-Bosca J, Cubillos-Arango A, Chacon-Hernandez N, Higueras-Ortega L, De La Espriella-Juan R, Ridocci-Soriano F, Noack T, Mukherjee C, Ionasec R, Voigt I, Kiefer P, Hoebartner M, Misfeld M, Mohr FW, Seeburger J, Daraban AM, Baltussen L, Amzulescu M, Bogaert J, Jassens S, Voigt J, Duchateau N, Giraldeau G, Gabrielli L, Penela D, Evertz R, Mont L, Brugada J, Berruezo A, Bijnens B, Sitges M, Yoshikawa H, Suzuki M, Hashimoto G, Kusunose Y, Otsuka T, Nakamura M, Sugi K, Ruiz Ortiz M, Mesa D, Romo E, Delgado M, Seoane T, Martin M, Carrasco F, Lopez Granados A, Arizon J, Suarez De Lezo J, Magalhaes A, Cortez-Dias N, Silva D, Menezes M, Saraiva M, Santos L, Costa A, Costa L, Nunes Diogo A, Fiuza M, Ren B, De Groot-De Laat L, Mcghie J, Vletter W, Geleijnse M, Toda H, Oe H, Osawa K, Miyoshi T, Ugawa S, Toh N, Nakamura K, Kohno K, Morita H, Ito H, El Ghannudi S, Germain P, Samet H, Jeung M, Roy C, Gangi A, Orii M, Hirata K, Yamano T, Tanimoto T, Ino Y, Yamaguchi T, Kubo T, Imanishi T, Akasaka T, Sunbul M, Kivrak T, Oguz M, Ozguven S, Gungor S, Dede F, Turoglu H, Yildizeli B, Mutlu B, Mihaila S, Muraru D, Piasentini E, Peluso D, Cucchini U, Casablanca S, Naso P, Iliceto S, Vinereanu D, Badano L, Rodriguez Munoz D, Moya Mur J, Becker Filho D, Gonzalez A, Casas Rojo E, Garcia Martin A, Recio Vazquez M, Rincon L, Fernandez Golfin C, Zamorano Gomez J, Ledakowicz-Polak A, Polak L, Zielinska M, Kamiyama T, Nakade T, Nakamura Y, Ando T, Kirimura M, Inoue Y, Sasaki O, Nishioka T, Farouk H, Sakr B, Elchilali K, Said K, Sorour K, Salah H, Mahmoud G, Casanova Rodriguez C, Cano Carrizal R, Iglesias Del Valle D, Martin Penato Molina A, Garcia Garcia A, Prieto Moriche E, Alvarez Rubio J, De Juan Bagua J, Tejero Romero C, Plaza Perez I, Korlou P, Stefanidis A, Mpikakis N, Ikonomidis I, Anastasiadis S, Komninos K, Nikoloudi P, Margos P, Pentzeridis P. Poster session Thursday 12 December - AM: 12/12/2013, 08:30-12:30 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet203] [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: 11/14/2022] Open
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Osawa K, Nakagawa T, Sasaki H, Wakasaki H, Furuta H, Nishi M, Nanjo K, Akamizu T. A case of type 2 diabetes with abrupt-onset hypoglycemia due to anti-insulin antibody: Immunological change evaluated by Scatchard analysis during successful treatment by the exchange from human insulin to insulin analogue. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Osawa K, Miyoshi T, Koyama Y, Hashimoto K, Nagase S, Nakamura K, Kohno K, Morita H, Kusano K, Ito H. Usefulness of first-pass myocardial perfusion imaging at rest in combination with 64-row detector computed tomography angiography for assessing coronary artery disease. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.896] [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: 11/14/2022] Open
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Osawa K, Miyoshi T, Koyama T, Nagase S, Nakamura K, Kohno K, Morita H, Kusano K, Ito H. Differential impact of visceral abdominal adipose tissue on vulnerable plaque detected by coroanry multi-detector row CT in patients with or without diabetes. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.2769] [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: 11/14/2022] Open
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Sakamoto H, Toh N, Oe H, Osawa K, Miyoshi T, Nakamura K, Ito H. Epicardial fat rather than abdominal visceral fat is associated with left ventricular diastolic dysfunction in patients with preserved left ventricular ejection fraction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2420] [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: 11/13/2022] Open
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Nakamura K, Miura D, Yunoki K, Koyama Y, Osawa K, Miyoshi T, Kohno K, Morita H, Ito H. Eicosapentaenoic acid prevents arterial calcification in klotho mutant mice, an animal model of typical aging. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2382] [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: 11/13/2022] Open
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Naito T, Miyoshi T, Osawa K, Toh N, Oe H, Nakamura K, Kohno K, Morita H, Kusano K, Ito H. Usefulness of epicardial adipose tissue by echocardiography as a predictor for plaque vulnerability determined by coronary CT angiography. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2038] [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: 11/13/2022] Open
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Shigemura K, Tanaka K, Osawa K, Nakano Y, Arakawa S, Fujisawa M. P358 Clinical risk factors for shock by bacteremic UTI. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70599-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shigemura K, Osawa K, Tanaka K, Yoshida H, Shirakawa T, Fujisawa M, Arakawa S. P260 Candida urinary tract isolation and Candida species susceptibilities to anti-fungus medication in Kobe University Hospital. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70501-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nagahara A, Mitani A, Fukuda M, Yamamoto H, Tahara K, Morita I, Ting CC, Watanabe T, Fujimura T, Osawa K, Sato S, Takahashi S, Iwamura Y, Kuroyanagi T, Kawashima Y, Noguchi T. Antimicrobial photodynamic therapy using a diode laser with a potential new photosensitizer, indocyanine green-loaded nanospheres, may be effective for the clearance of Porphyromonas gingivalis. J Periodontal Res 2013; 48:591-9. [PMID: 23317284 DOI: 10.1111/jre.12042] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Antimicrobial photodynamic therapy (aPDT) is a new treatment method for the removal of infectious pathogens using a photosensitizer and light of a specific wavelength, e.g., toluidine blue with a wavelength of about 600 nm. We explored a new photosensitizer and focused on indocyanine green (ICG), which has high absorption at a wavelength of 800-805 nm. We investigated the bactericidal effect of PDT on Porphyromonas gingivalis using a new photosensitizer, ICG-loaded nanospheres with an 805 nm wavelength low-level diode laser irradiation. METHODS We designed ICG-loaded nanospheres coated with chitosan (ICG-Nano/c) as a photosensitizer. A solution containing Porphyromonas gingivalis (10(8) CFU/mL) with or without ICG-Nano/c (or ICG) was prepared and irradiated with a diode laser or without laser irradiation as a negative control. The irradiation settings were 0.5 W with a duty ratio of 10%, for 3-100 ms in repeated pulse (RPT) or continuous wave mode. CFU were counted after 7 d of anaerobic culture. RESULTS We observed that ICG-Nano/c could adhere to the surface of P. gingivalis. When ICG-Nano/c was used for aPDT, irradiation with RPT 100 ms mode gave the lowest increase in temperature. Laser irradiation with ICG-Nano/c significantly reduced the number of P. gingivalis (i.e., approximately 2-log10 bacterial killing). The greatest bactericidal effect was found in the RPT 100 ms group. However, laser irradiation (RPT 100 ms) with ICG, as well as without photosensitizer, had no effect on the number of bacteria. CONCLUSIONS Within the limits of this study, ICG-Nano/c with low-level diode laser (0.5 W; 805 nm) irradiation showed an aPDT-like effect, which might be useful for a potential photodynamic periodontal therapy.
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Affiliation(s)
- A Nagahara
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Aichi, Japan
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Nakao K, Okubo Y, Yasoda A, Koyama N, Osawa K, Isobe Y, Kondo E, Fujii T, Miura M, Nakao K, Bessho K. The effects of C-type natriuretic peptide on craniofacial skeletogenesis. J Dent Res 2012; 92:58-64. [PMID: 23114031 DOI: 10.1177/0022034512466413] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
C-type natriuretic peptide (CNP) is a potent stimulator of long bone and vertebral development via endochondral ossification. In the present study, we investigated the effects of CNP on craniofacial skeletogenesis, which consists of both endochondral and membranous ossification. Morphometric analyses of crania from CNP knockout and transgenic mice revealed that CNP stimulates longitudinal growth along the cranial length, but does not regulate cranial width. CNP markedly increased the length of spheno-occipital synchondrosis in fetal murine organ cultures, and the thickness of cultured murine chondrocytes from the spheno-occipital synchondrosis or nasal septum, resulting in the stimulation of longitudinal cranial growth. Mandibular growth includes endochondral and membranous ossification; although CNP stimulated endochondral bone growth of condylar cartilage in cultured fetal murine mandibles, differences in the lengths of the lower jaw between CNP knockout or transgenic mice and wild-type mice were smaller than those observed for the lengths of the upper jaw. These results indicate that CNP primarily stimulates endochondral ossification in the craniofacial region and is crucial for midfacial skeletogenesis.
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Affiliation(s)
- K Nakao
- Department of Oral and Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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Osawa K, Hamamoto T, Fujisawa T, Terazima M, Sato H, Kimura Y. Raman Spectroscopic Study on the Solvation of p-Aminobenzonitrile in Supercritical Water and Methanol. J Phys Chem A 2009; 113:3143-54. [DOI: 10.1021/jp8111606] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- K. Osawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - T. Hamamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - T. Fujisawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - M. Terazima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - H Sato
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Y. Kimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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Sawabe E, Kato H, Osawa K, Chida T, Tojo N, Arakawa Y, Okamura N. Molecular analysis of Clostridium difficile at a university teaching hospital in Japan: a shift in the predominant type over a five-year period. Eur J Clin Microbiol Infect Dis 2007; 26:695-703. [PMID: 17647032 DOI: 10.1007/s10096-007-0355-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Clostridium difficile isolates recovered from patients admitted to a teaching hospital in Japan over a 5-year period were analyzed. Two molecular typing systems, PCR ribotyping and pulsed-field gel electrophoresis (PFGE) analysis, were used. Twenty-six PCR ribotypes were found among the 148 isolates. The predominant type at our hospital appeared to shift during the study period, from PCR ribotype a in 2000 (15/33, 45%) to PCR ribotype f in 2004 (18/28, 64%). By using PFGE with thiourea added to both the gel and running buffer, all 148 Clostridium difficile isolates were successfully classified into 37 types and 61 subtypes. The PCR ribotype f isolates were further classified into four types and 11 subtypes by PFGE. The PFGE patterns of the 11 subtypes differed from each other by only 1 to 4 bands, suggesting that these differences might reflect genetic changes during patient-to-patient transmission over the 5-year period analyzed, and that PCR ribotype f isolates might be outbreak-related. In addition, the PCR ribotype f was identical to the PCR ribotype designated smz, which is reported to have caused multiple outbreaks in Japan. These results confirmed that PCR ribotype f (type smz) has specific virulence or survival factors that make it more likely to cause nosocomial outbreaks at Japanese hospitals. PCR ribotype 027, which has been reported to have caused recent outbreaks in North America and Europe, was recovered from one patient in this study; however, this strain was community-acquired. Our findings emphasize the importance of monitoring specific strains to control and prevent nosocomial infection.
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Affiliation(s)
- E Sawabe
- Department of Clinical Laboratory, Tokyo Medical and Dental University Hospital, Faculty of Medicine, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
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Nagata H, Inagaki Y, Yamamoto Y, Maeda K, Kataoka K, Osawa K, Shizukuishi S. Inhibitory effects of macrocarpals on the biological activity of Porphyromonas gingivalis and other periodontopathic bacteria. ACTA ACUST UNITED AC 2006; 21:159-63. [PMID: 16626372 DOI: 10.1111/j.1399-302x.2006.00269.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIMS Macrocarpals, which are phloroglucinol derivatives contained in eucalyptus leaves, exhibit antimicrobial activity against a variety of bacteria including oral bacteria. This study examined effects of macrocarpals A, B, and C on periodontopathic bacteria, especially Porphyromonas gingivalis. METHODS Macrocarpals A, B, and C were purified from a 60% ethanol-extract of Eucalyptus globules leaves. To investigate antibacterial activity, representative periodontopathic bacteria were cultured in media with or without various amounts of macrocarpals; subsequently, the optical density at 660 nm was measured. Macrocarpal inhibition of P. gingivalis Arg- and Lys-specific proteinases was assessed by spectrofluorophotometric assay and sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis. The effect of macrocarpals on P. gingivalis binding to saliva-coated hydroxyapatite beads was examined with (3)H-labeled P. gingivalis. RESULTS Growth of P. gingivalis was inhibited more strongly than growth of Prevotella intermedia or Prevotella nigrescens and Treponema denticola by macrocarpals, however, Actinobacillus actinomycetemcomitans and Fusobacterium nucleatum were much more resistant. Macrocarpals inhibited P. gingivalis Arg- and Lys-specific proteinases in a dose-dependent manner. The enzyme-inhibitory effect of macrocarpals was confirmed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis in which hemoglobin degradation by P. gingivalis proteinase was inhibited by macrocarpals. P. gingivalis binding to saliva-coated hydroxyapatite beads was also strongly attenuated by macrocarpals. CONCLUSIONS Macrocarpals A, B and C demonstrated antibacterial activity against periodontopathic bacteria. Among tested bacteria, P. gingivalis displayed the greatest sensitivity to macrocarpals; additionally, its trypsin-like proteinase activity and binding to saliva-coated hydroxyapatite beads were inhibited by macrocarpals. These results indicate that eucalyptus leaf extracts may be useful as a potent preventative of periodontal disease.
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Affiliation(s)
- H Nagata
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan.
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Osawa K, Takami N, Shiozawa K, Hashiramoto A, Shiozawa S. Death receptor 3 (DR3) gene duplication in a chromosome region 1p36.3: gene duplication is more prevalent in rheumatoid arthritis. Genes Immun 2004; 5:439-43. [PMID: 15241467 DOI: 10.1038/sj.gene.6364097] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The death receptor 3 (DR3) gene is a member of the apoptosis-inducing Fas gene family. In the current study, fluorescence in situ hybridization (FISH) and Fiber-FISH revealed the existence of a second DR3 gene approximately 200 kb upstream of the original DR3 gene. The existence of the duplicated DR3 gene was confirmed by sequencing the corresponding human artificial chromosome clones as well as with quantitative PCR that measured the ratio of the DR3 gene mutation (Rm), intrinsic to rheumatoid arthritis (RA) patients, by simultaneous amplification of the normal and mutated DR3 sequences. The DR3 gene duplication measured by FISH was found to be more frequent in patients with RA as compared to healthy individuals. We therefore surmise that the human DR3 gene can be duplicated and that this gene duplication is more prevalent in patients with RA.
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Affiliation(s)
- K Osawa
- Department of Rheumatology, Kobe University FHS School of Medicine, Kobe, Japan
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Imai H, Osawa K, Yasuda H, Hamashima H, Arai T, Sasatsu M. Inhibition by the essential oils of peppermint and spearmint of the growth of pathogenic bacteria. Microbios 2002; 106 Suppl 1:31-9. [PMID: 11549238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
The effects of the, essential oils of peppermint (Mentha piperita L.), spearmint Mentha spicata L.) and Japanese mint (Mentha, arvensis L.), of four major constituents of the esssential oil of peppermint, and of three major constituents of the essential oil of spearmint, on the proliferation of Helicobacter pylori, Salmonella enteritidis, Escherichia coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA) and methicillin sensitive Staphylococccus aureus (MSSA) were examined. The essential oils and the various constituents inhibited the proliferation of each strain in liquid culture in a dose-dependent manner. In addition, they exhibited bactericidal activity in phosphate-buffered saline. The antibacterial activities varied among the bacterial species tested but were almost the same against antibiotic-resistant and antibiotic-sensitive strains of Helicobacter pylori and S. aureus. Thus, the essential oils and their constituents may be useful as potential antibacterial agents for inhibition of the growth of pathogens.
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Affiliation(s)
- H Imai
- Functional Foods Section, Central Laboratory, Lotte Company Ltd, Urawa, Saitama, Japan
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Osawa K, Miyazaki K, Shimura S, Okuda J, Matsumoto M, Ooshima T. Identification of cariostatic substances in the cacao bean husk: their anti-glucosyltransferase and antibacterial activities. J Dent Res 2001; 80:2000-4. [PMID: 11759010 DOI: 10.1177/00220345010800111001] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The cacao bean husk has been shown to possess two types of cariostatic substances, one showing anti-glucosyltransferase (GTF) activity and the other antibacterial activity, and to inhibit experimental dental caries in rats infected with mutans streptococci. In the present study, chromatographic purification revealed high-molecular-weight polyphenolic compounds and unsaturated fatty acids as active components. The former, which showed strong anti-GTF activity, were polymeric epicatechins with C-4beta and C-8 intermolecular bonds estimated to be 4636 in molecular weight in an acetylated form. The latter, which showed bactericidal activity against Streptococcus mutans, were determined to be oleic and linoleic acids, and demonstrated a high level of activity at a concentration of 30 microgram/mL. The cariostatic activity of the cacao bean husk is likely caused by these biologically active constituents.
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Affiliation(s)
- K Osawa
- Central Laboratory, Lotte Co. Ltd., Saitama, Saitama, Japan
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Hamada S, Sutou S, Morita T, Wakata A, Asanami S, Hosoya S, Ozawa S, Kondo K, Nakajima M, Shimada H, Osawa K, Kondo Y, Asano N, Sato S, Tamura H, Yajima N, Marshall R, Moore C, Blakey DH, Schechtman LM, Weaver JL, Torous DK, Proudlock R, Ito S, Namiki C, Hayashi M. Evaluation of the rodent micronucleus assay by a 28-day treatment protocol: Summary of the 13th Collaborative Study by the Collaborative Study Group for the Micronucleus Test (CSGMT)/Environmental Mutagen Society of Japan (JEMS)-Mammalian Mutagenicity Study Group (MMS). Environ Mol Mutagen 2001; 37:93-110. [PMID: 11246216 DOI: 10.1002/em.1017] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
To examine whether micronucleus tests can be incorporated into general toxicology assays, we performed micronucleus tests applying the treatment protocols typically used in such assays. In this 13th Collaborative Study of the CSGMT, both rats and mice were tested, although rats were used in the majority of the studies. Fifteen mutagens were tested in rats, mainly by oral (p.o.) administration. Micronucleus induction was evaluated 2, 3, and 4 days, and 1, 2, 3, and 28 days after the beginning of the treatment in the peripheral blood, and at 28 days in the bone marrow. Of the 15 chemicals that induced micronuclei in rats in short-term assays, two chemicals (1,2-dimethylhydrazine.2HCl and mitomycin C) were negative in all our experiments, possibly because of insufficient dose levels. The remaining 13 were positive within the estimated dose range of a general toxicology assay, suggesting the possibility of integrating the micronucleus assay into general toxicology assays. Three patterns were observed in micronucleus induction during the period of repeated treatment: (1) gradual increases in micronucleus frequency with sequential doses, (2) a peak at 3-5 days followed by gradual decreases in micronucleus frequency with sequential doses, and (3) a rapid increase in micronucleus frequency followed by a plateau. We evaluated factors that might have been involved in those patterns, such as the spleen function, target organ exposure, extramedullary hematopoiesis, hypothermia, and hypoxia. Another factor we considered was dosage. Because the dosages employed in a general toxicity assay are usually lower than those used in short-term micronucleus assays, this discrepancy was considered the greatest potential problem for integrating the micronucleus assay into general toxicology assays. Our results indicate that the integration of the micronucleus assay into a 28-day toxicological assay is feasible. To serve this purpose, blood samples collected 4 days after the beginning of treatment and blood and bone marrow samples collected at autopsy should be examined. Furthermore, although it is recognized that mice may be suitable for performing independent micronucleus assays, we propose that rats can provide biologically important and relevant information regarding potential chemical mutagens that can be evaluated under conditions used in the conduct of general toxicology studies.
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Affiliation(s)
- S Hamada
- Central Research Laboratory, SSP Company, Ltd., Chiba, Japan.
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Abstract
Chocolate is suspected to contain some caries-inhibitory substances. The cariostatic activity of cacao mass extract (CM), the main component of chocolate, was examined in vitro and in experimental animals. CM showed no detectable effects on the cellular growth and acid production of mutans streptococci. On the other hand, the cell-surface hydrophobicity of mutans streptococci was significantly reduced by the presence of CM. Furthermore, insoluble glucan synthesis by the glucosyltransferases from either Streptococcus mutans MT8148R or Strep. sobrinus 6715 was inhibited by CM, but not significantly. Hence, the sucrose-dependent cell adherence of mutans streptococci was also depressed by CM. Finally, CM in both a 40% sucrose diet and drinking water resulted in reductions of caries development and plaque accumulation in rats infected with Strep. sobrinus 6715, but not significantly. These results indicate that cacao mass extract possesses some anticariogenic potential, but its anticaries activity is not strong enough to suppress significantly the cariogenic activity of sucrose.
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Affiliation(s)
- T Ooshima
- Departments of Pedodontics, Osaka University Faculty of Dentistry, 1-8 Yamadaoka, Suita, 565-0871, Osaka, Japan.
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Ooshima T, Osaka Y, Sasaki H, Osawa K, Yasuda H, Matsumura M, Sobue S, Matsumoto M. Caries inhibitory activity of cacao bean husk extract in in-vitro and animal experiments. Arch Oral Biol 2000; 45:639-45. [PMID: 10869475 DOI: 10.1016/s0003-9969(00)00042-x] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cacao bean husk extract (CBH) was examined for inhibitory effects on the caries-inducing properties of mutans streptococci in vitro and on caries development in specific pathogen-free Sprague-Dawley rats infected with mutans streptococci. CBH reduced the growth rate of almost all oral streptococci examined, which resulted in the reduction of acid production. Furthermore, insoluble glucan synthesis by the glucosyltransferases from Streptococcus mutans MT8148R and Streptococcus sobrinus 6715 was significantly inhibited by CBH. Hence, the sucrose-dependent cell adherence of mutans streptococci was also depressed by CBH. The administration of CBH in drinking water resulted in significant reductions of caries development and dental plaque accumulation in rats infected with either Strep. sobrinus 6715 or Strep. mutans MT8148R, and the minimum cariostatic concentration was 1.0 mg/ml. These results indicate that CBH possesses powerful anticariogenic potential.
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Affiliation(s)
- T Ooshima
- Department of Pedodontics, Faculty of Dentistry, Osaka University, Yamadaoka, Japan.
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Abstract
The molecular structure and packing arrangement of anhydrous tendon chitosan was determined by the X-ray fibre diffraction method together with the linked-atom least-squares refinement technique. The specimen was prepared from chitosan/acetic acid complex which was obtained by exposing tendon chitosan to acetic acid vapour at room temperature for several days. There is high degree of orientation and crystallinity compared with the specimen obtained by the annealing method. Two chitosan chains are present in an orthorhombic unit cell of dimensions a = 8.26(2), b = 8.50(1), c (fibre axis) = 10.43(2) A and space group P2(1)2(1)2(1). The 2-fold helical chain is stabilised by O3 triple bond O5 hydrogen bond with the gt orientation of O6. There are direct hydrogen bonds (N2 triple bond O6) between adjacent chains along the a-axis, which makes a sheet structure parallel to the ac-plane. On the other hand, no hydrogen bond is found between the sheets.
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Affiliation(s)
- K Okuyama
- Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Japan.
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Osawa K, Shirai T, Goto T, Suzuki K, Sano S, Honjo Y, Ishibashi R, Otake G, Takayanagi S, Kaneko E. [Case of anaphylaxis caused by tiquizium bromide (Thiaton)]. Nihon Naika Gakkai Zasshi 1999; 88:1524-6. [PMID: 10475017 DOI: 10.2169/naika.88.1524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Fujii H, Sato T, Kaneko S, Gotoh O, Fujii-Kuriyama Y, Osawa K, Kato S, Hamada H. Metabolic inactivation of retinoic acid by a novel P450 differentially expressed in developing mouse embryos. EMBO J 1997; 16:4163-73. [PMID: 9250660 PMCID: PMC1170042 DOI: 10.1093/emboj/16.14.4163] [Citation(s) in RCA: 264] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Retinoic acid (RA) is a physiological agent that has a wide range of biological activity and appears to regulate developmental programs of vertebrates. However, little is known about the molecular basis of its metabolism. Here we have identified a novel cytochrome P450 (P450RA) that specifically metabolizes RA. In vitro, P450RA converts all-trans RA into 5,8-epoxy all-trans RA. P450RA metabolizes other biologically active RAs such as 9-cis RA and 13-cis RA, but fails to metabolize their precursors, retinol and retinal. Overexpression of P450RA in cell culture renders the cells hyposensitive to all-trans RA. These functional tests in vitro and in vivo indicate that P450RA inactivates RA. The P450RA gene is not expressed uniformly but in a stage- and region-specific fashion during mouse development. The major expression domains in developing embryos include the posterior neural plate and neural crest cells for cranial ganglia. The expression of P450RA, however, is not necessarily inducible by excess RA. These results suggest that P450RA regulates the intracellular level of RA and may be involved in setting up the uneven distribution of active RA in mammalian embryos.
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MESH Headings
- Amino Acid Sequence
- Animals
- Blotting, Northern
- Cell Line
- Chloramphenicol O-Acetyltransferase/genetics
- Chloramphenicol O-Acetyltransferase/metabolism
- Chromatography, High Pressure Liquid
- Cloning, Molecular
- Cytochrome P-450 Enzyme System/chemistry
- Cytochrome P-450 Enzyme System/genetics
- Cytochrome P-450 Enzyme System/metabolism
- Embryo, Mammalian/cytology
- Embryo, Mammalian/metabolism
- Embryonic and Fetal Development
- Gene Expression Regulation, Developmental
- In Situ Hybridization
- Mice
- Microscopy, Phase-Contrast
- Molecular Sequence Data
- Oxygenases/chemistry
- Oxygenases/genetics
- Oxygenases/metabolism
- Receptors, Retinoic Acid/metabolism
- Retinoic Acid 4-Hydroxylase
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Substrate Specificity
- Transfection/genetics
- Tretinoin/analogs & derivatives
- Tretinoin/metabolism
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Affiliation(s)
- H Fujii
- Tokyo Metropolitan Institute of Medical Science, Bunkyo-ku, Japan
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Abstract
A 50% EtOH extract of Eucalyptus globulus leaves yielded eight phloroglucinol--sesquiterpene-coupled constituents, including three novel compounds named macrocarpals, H, I, and J. Some of these compounds possessed antibacterial activity against oral pathogenic microorganisms with MIC values ranging from 0.20 micrograms/mL to 6.25 micrograms/mL. Inhibition of glucosyltransferase activity by these compounds was also noted.
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Affiliation(s)
- K Osawa
- Department of Basic Research, Lotte Central Laboratory Co, Ltd., Saitama, Japan
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