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Oe Y, Kobayashi M, Yoshida T, Kojima H, Terukina T, Kondo H. Injectable Testosterone PLGA Microsphere with Different Characteristics: Effect of Preparation Method (Paddle Mixing versus Microfluidic Device). Pharm Dev Technol 2024:1-17. [PMID: 38682665 DOI: 10.1080/10837450.2024.2348580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 04/24/2024] [Indexed: 05/01/2024]
Abstract
The purpose of this study was to compare the characteristics of testosterone polylactic-co-glycolic (PLGA) microspheres prepared by a paddle mixer or microfluidics device. The comparison was conducted by not only in vitro evaluation but also in vivo evaluation which has not been reported up to date. We discovered that, among the steps in microsphere preparation, the solvent removal process strongly impacted drug content, particle size and surface morphology. Spectroscopic measurements suggested that molecular interactions and crystallinity of the drug incorporated in the microspheres differed. For the drug release profile, although both mixer- and microfluidics-prepared samples showed similar sustained release of the incorporated drug for approximately one month in vitro, they exhibited different plasma concentration profiles in vivo. Together, our findings show that the preparation process, especially the solvent removal process, may affect the physicochemical characteristics of testosterone PLGA microspheres, leading to different in vivo performance.
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Affiliation(s)
- Yusuke Oe
- Pharmaceutical Research & Technology Labs, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka 425-0072, Japan
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Masanori Kobayashi
- Pharmaceutical Research & Technology Labs, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka 425-0072, Japan
| | - Takayuki Yoshida
- Pharmaceutical Research & Technology Labs, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka 425-0072, Japan
| | - Hiroyuki Kojima
- Pharmaceutical Research & Technology Labs, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka 425-0072, Japan
- Faculty of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka-shi, 812-8582, Japan
| | - Takayuki Terukina
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Kimata R, Yoshihara N, Tomita Y, Terukina T, Kondo H. Polymer Characteristics for Drug Layering on Particles Using a Novel Melt Granulation Technology, MALCORE ®. AAPS PharmSciTech 2024; 25:81. [PMID: 38600252 DOI: 10.1208/s12249-024-02798-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/25/2024] [Indexed: 04/12/2024] Open
Abstract
MALCORE®, a novel manufacturing technology for drug-containing particles (DCPs), relies on the melt granulation method to produce spherical particles with high drug content. The crucial aspect of particle preparation through MALCORE® involves utilizing polymers that dissolve in the melt component, thereby enhancing viscosity upon heating. However, only aminoalkyl methacrylate copolymer E (AMCE) has been previously utilized. Therefore, this study aims to discover other polymers and comprehend the essential properties these polymers need to possess. The results showed that polyvinylpyrrolidone (PVP) was soluble in the stearic acid (SA) melt component. FTIR examination revealed no interaction between SA and polymer. The phase diagram was used to analyze the state of the SA and polymer mixture during heating. It revealed the mixing ratio and temperature range where the mixture remained in a liquid state. The viscosity of the mixture depended on the quantity and molecular weight of the polymer dissolved in SA. Furthermore, the DCPs prepared using PVP via MALCORE® exhibited similar pharmaceutical properties to those prepared with AMCE. In conclusion, understanding the properties required for polymers in the melt granulation process of MALCORE® allows for the optimization of manufacturing conditions, such as temperature and mixing ratios, for efficient and consistent drug layering.
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Affiliation(s)
- Ryota Kimata
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan
- Pharmaceutical Development Department, Sawai Pharmaceutical Co., Ltd, 2-30, Miyahara 5-Chome, Yodogawa-Ku, Osaka, 532-0003, Japan
| | - Naoki Yoshihara
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan
- Pharmaceutical Development Department, Sawai Pharmaceutical Co., Ltd, 2-30, Miyahara 5-Chome, Yodogawa-Ku, Osaka, 532-0003, Japan
| | - Yuya Tomita
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan
| | - Takayuki Terukina
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan.
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Ratchatasunthorn A, Sakagami H, Kondo H, Hipkaeo W, Chomphoo S. Temporal involvement of phosphatidylinositol 4-phosphate 5-kinase γ in differentiation of Z-bands and myofilament bundles as well as intercalated discs in mouse heart at mid-gestation. J Anat 2024. [PMID: 38275211 DOI: 10.1111/joa.14008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 12/25/2023] [Accepted: 01/08/2024] [Indexed: 01/27/2024] Open
Abstract
Considering the occurrence of serious heart failure in a gene knockout mouse of PIP5Kγ and in congenital abnormal cases in humans in which the gene was defective as reported by others, the present study attempted to localize PIP5Kγ in the heart during prenatal stages. It was done on the basis of the supposition that phenotypes caused by gene mutation of a given molecule are owed to the functional deterioration of selective cellular sites normally expressing it at significantly higher levels in wild mice. PIP5Kγ-immunoreactivity was the highest in the heart at E10 in contrast to almost non-significant levels of the immunoreactivity in surrounding organs and tissues such as liver. The immunoreactivity gradually weakened in the heart with the prenatal age, and it was at non-significant levels at newborn and postnatal stages. Six patterns in localization of distinct immunoreactivity for PIP5Kγ were recognized in cardiomyocytes: (1) its localization on the plasma membranes and subjacent cytoplasm without association with short myofibrils and (2) its localization on them as well as short myofibrils in association with them in cardiomyocytes of early differentiation at E10; (3) its spot-like localization along long myofibrils in cardiomyocytes of advanced differentiation at E10; (4) rare occurrences of such spot-like localization along long myofibrils in cardiomyocytes of advanced differentiation at E14; (5) its localization at Z-bands of long myofibrils; and (6) its localization at intercellular junctions including the intercalated discs in cardiomyocytes of advanced differentiation at E10 and E14, especially dominant at the latter stage. No distinct localization of PIP5Kγ-immunoreactivity of any patterns was seen in the heart at E18 and P1D. The present finding suggests that sites of PIP5Kγ-appearance and probably of its high activity in cardiomyocytes are shifted from the plasma membranes through short myofibrils subjacent to the plasma membranes and long myofibrils, to Z-bands as well as to the intercalated discs during the mid-term gestation. It is further suggested that PIP5Kγ is involved in the differentiation of myofibrils as well as intercellular junctions including the intercalated discs at later stages of the mid-term gestation. Failures in its involvement in the differentiation of these structural components are thus likely to cause the mid-term gestation lethality of the mutant mice for PIP5Kγ.
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Affiliation(s)
- A Ratchatasunthorn
- Electron Microscopy Unit, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - H Sakagami
- Department of Anatomy, School of Medicine, Kitasato University, Sagamihara, Japan
| | - H Kondo
- Electron Microscopy Unit, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Department of Anatomy, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - W Hipkaeo
- Electron Microscopy Unit, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - S Chomphoo
- Electron Microscopy Unit, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
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Kojima H, Yoshida T, Kondo H, Sako K. Drug Extended-Release System Utilizing Micelle Formation of Highly Water-Soluble Drugs and a Counter Polymer. Mol Pharm 2023; 20:6056-6065. [PMID: 37955875 DOI: 10.1021/acs.molpharmaceut.3c00377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
The objective of this study is to clarify the mechanism of extending release of highly water-soluble drugs via counter polymer (CP) utilization in poly(ethylene oxide) (PEO)/polyethylene glycol (PEG) matrix tablets. Carbomer, poly(acrylic acid), was used as a CP, which has the opposite charges to the drugs. The in vitro release of several highly water-soluble drugs from PEO/PEG tablet with or without CP were tested, the relationship between the sustained release effect by a CP (SRE) and the physicochemical properties of the drugs was investigated. The results demonstrated that the utilization of CP can extend the release of some highly water-soluble drugs by effectively controlling the drug diffusion through matrices. On the other hand, the effectiveness of CP was different depending on the drugs applied. There were not statistical correlations between SRE and physicochemical properties such as solubility, molecular weight, and charge intensity of the drugs, while a micelle forming property of the drugs played an important role in SRE by CP. It was concluded that CP, Carbomer, having negative charges could effectively interact with opposite charges on the surface of stable drug micelles, which could result in a significant decrease in drug diffusion leading to extended drug release. It is considered that the system utilizing CP is a promising approach to achieve extended release of highly water-soluble drugs with a reasonable tablet size, especially in the case of large drug loading.
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Affiliation(s)
- Hiroyuki Kojima
- Pharmaceutical Research and Technology Laboratories, Astellas Pharma Inc. 180 Ozumi, Yaizu 425-0072, Shizuoka, Japan
| | - Takayuki Yoshida
- Pharmaceutical Research and Technology Laboratories, Astellas Pharma Inc. 180 Ozumi, Yaizu 425-0072, Shizuoka, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku 422-8526, Shizuoka, Japan
| | - Kazuhiro Sako
- Pharmaceutical Research and Technology Laboratories, Astellas Pharma Inc. 180 Ozumi, Yaizu 425-0072, Shizuoka, Japan
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Toyohara T, Yoshida M, Miyabe K, Hayashi K, Naitoh I, Kondo H, Hori Y, Kato A, Kachi K, Asano G, Sahashi H, Adachi A, Kuno K, Kito Y, Matsuo Y, Kataoka H. Dual role of autotaxin as novel biomarker and therapeutic target in pancreatic neuroendocrine neoplasms. Cancer Sci 2023; 114:4571-4582. [PMID: 37770812 PMCID: PMC10728022 DOI: 10.1111/cas.15980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023] Open
Abstract
Pancreatic neuroendocrine neoplasms (panNENs) are rare pancreatic neoplasms, and descriptions of treatment remain limited. Autotaxin (ATX) is a secreted autocrine motility factor involved in the production of lysophosphatidic acid (LPA), a lipid mediator that promotes the progression of various cancers. The aim of this study was to clarify the importance of the ATX-LPA axis in panNENs and to confirm its contribution to panNEN progression using clinical data, cell lines, and a mouse model. Serum ATX level was higher in patients with panNEN than in patients with other pancreatic diseases (chronic pancreatitis, pancreatic ductal adenocarcinoma [PDAC], intraductal papillary mucinous neoplasm, autoimmune pancreatitis) and healthy controls, and 61% of clinical specimens stained strongly for ATX. In a case we encountered, serum ATX level fluctuated with disease progression. An in vitro study showed higher ATX mRNA expression in panNEN cell lines than in PDAC cell lines. Cell proliferation and migration in panNEN cell lines were stimulated via the ATX-LPA axis and suppressed by RNA interference or inhibitors. An in vivo study showed that intraperitoneal injection of GLPG1690, an ATX inhibitor, suppressed tumor progression in a xenograft model. These findings revealed that ATX expression is significantly elevated in panNEN and is related to the progression of panNEN. We showed the potential of ATX as a novel biomarker and therapeutic target.
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Affiliation(s)
- Tadashi Toyohara
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Michihiro Yoshida
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Katsuyuki Miyabe
- Department of GastroenterologyJapanese Red Cross Aichi Medical Center Nagoya Daini HospitalNagoyaJapan
| | - Kazuki Hayashi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Itaru Naitoh
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiromu Kondo
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yasuki Hori
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Akihisa Kato
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Kenta Kachi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Go Asano
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hidenori Sahashi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Akihisa Adachi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Kayoko Kuno
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yusuke Kito
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yoichi Matsuo
- Department of Gastroenterological SurgeryNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiromi Kataoka
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
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Matoya S, Suzuki T, Matsuura K, Suzuki Y, Okumura F, Nagura Y, Sobue S, Kuroyanagi K, Kusakabe A, Koguchi H, Hasegawa I, Miyaki T, Tanaka Y, Kondo H, Kimura Y, Ozasa A, Kawamura H, Kuno K, Fujiwara K, Nojiri S, Kataoka H. The neutrophil-to-lymphocyte ratio at the start of the second course during atezolizumab plus bevacizumab therapy predicts therapeutic efficacy in patients with advanced hepatocellular carcinoma: A multicenter analysis. Hepatol Res 2023. [PMID: 36723964 DOI: 10.1111/hepr.13886] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/23/2023] [Accepted: 01/26/2023] [Indexed: 02/02/2023]
Abstract
AIM Atezolizumab plus bevacizumab (Atez/Bev) therapy is expected to have good therapeutic efficacy for patients with advanced hepatocellular carcinoma (HCC). However, the clinical indicators that predict therapeutic efficacy have not been established. We retrospectively investigated whether the neutrophil-to-lymphocyte ratio (NLR) during Atez/Bev therapy could predict therapeutic efficacy. METHOD In total, 110 patients with HCC were enrolled; they were treated with Atez/Bev therapy and evaluated for their initial response by dynamic CT or MRI at least once between October 2020 and July 2022. RESULTS Of the 110 patients with HCC at the initial evaluation, two (2%) showed a complete response (CR), 22 (20%) partial response (PR), 62 (56%) stable disease (SD), and 24 (21%) progressive disease (PD). The NLR at the start of the second course (NLR-2c) increased from CR + PR to SD to PD. There was no significant association between the baseline NLR and the initial therapeutic response. Patients with CR + PR had lower NLR-2c values than those with SD + PD (p < 0.001) and the optimal cut-off value of NLR-2c was 1.97. Patients with NLR-2c <1.97 had better overall survival and progression-free survival (PFS) than those with NLR-2c ≥1.97 (p = 0.005 for overall survival; p < 0.001 for PFS). A multivariate analysis showed that female sex, higher PIVKA-II levels at baseline, and higher values of NLR-2c were significantly associated with poorer PFS. CONCLUSIONS The NLR-2c value predicts the initial therapeutic response and prognosis of patients with HCC treated with Atez/Bev therapy.
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Affiliation(s)
- Sho Matoya
- Department of Gastroenterology, Toyokawa City Hospital, Toyokawa, Japan
| | - Takanori Suzuki
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kentaro Matsuura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yuta Suzuki
- Department of Gastroenterology, Gifu Prefectural Tajimi Hospital, Gifu, Japan
| | - Fumihiro Okumura
- Department of Gastroenterology, Gifu Prefectural Tajimi Hospital, Gifu, Japan
| | - Yoshihito Nagura
- Department of Gastroenterology, Kasugai Municipal Hospital, Kasugai, Japan
| | - Satoshi Sobue
- Department of Gastroenterology, Kasugai Municipal Hospital, Kasugai, Japan
| | - Keita Kuroyanagi
- Department of Gastroenterology, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan
| | - Atsunori Kusakabe
- Department of Gastroenterology, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan
| | - Hiroki Koguchi
- Department of Gastroenterology, Chukyo Hospital, Nagoya, Japan
| | - Izumi Hasegawa
- Department of Gastroenterology, Chukyo Hospital, Nagoya, Japan
| | - Tomokatsu Miyaki
- Department of Gastroenterology, Toyokawa City Hospital, Toyokawa, Japan
| | - Yoshito Tanaka
- Department of Gastroenterology, Nagoya City East Medical Center, Nagoya, Japan
| | - Hiromu Kondo
- Department of Gastroenterology, Nagoya City East Medical Center, Nagoya, Japan
| | - Yoshihide Kimura
- Department of Gastroenterology, Nagoya City University West Medical Center, Nagoya, Japan
| | - Atsushi Ozasa
- Department of Gastroenterology, Asahi Rousai Hospital, Owariasahi, Japan
| | - Hayato Kawamura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kayoko Kuno
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kei Fujiwara
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shunsuke Nojiri
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiromi Kataoka
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Terukina T, Tanaka J, Takayama Y, Osanai K, Kino S, Kanazawa T, Kondo H. Sangelose-based gels and films: effects of glycerol and α-cyclodextrin and their pharmaceutical application. Drug Dev Ind Pharm 2023; 49:75-83. [PMID: 36803493 DOI: 10.1080/03639045.2023.2182127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
OBJECTIVE To evaluate the possible application of Sangelose as an alternative to gelatin and carrageenan for the development of film substrates, and to examine the effect of glycerol and α-cyclodextrin (α-CyD) on the viscoelastic properties of Sangelose-based gels and the physical properties of the films. SIGNIFICANCE Sangelose-based gels/films can serve as a potential viable alternative to gelatin and carrageenan in pharmaceutical applications. METHODS Glycerol (a plasticizer) and α-CyD (a functional additive) were added to Sangelose, and gels and films were prepared. The gels were evaluated by dynamic viscoelasticity measurements, and the films were evaluated by scanning electron microscopy, Fourier-transform infrared spectroscopy, tensile tests, and contact angle measurements. Soft capsules were prepared using the formulated gels. RESULTS The strength of the gels was affected when only glycerol was added to Sangelose and α-CyD addition resulted in rigid gels. However, the addition of α-CyD with 10% glycerol weakened the gels. Tensile tests suggested that glycerol addition affected the formability and malleability of the films, while α-CyD addition affected their formability and elongation properties. The addition of 10% glycerol and α-CyD did not affect the flexibility of the films, suggesting that the malleability and strength were impacted. Soft capsules could not be prepared by adding only glycerol or α-CyD to Sangelose. Soft capsules with favorable disintegration behavior were obtained upon adding α-CyD to gels along with 10% glycerol. CONCLUSIONS Sangelose combined with a suitable amount of glycerol and α-CyD has preferable characteristics for film formation and may have potential applications in the pharmaceutical and health food sectors.
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Affiliation(s)
- Takayuki Terukina
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Jun Tanaka
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Yumi Takayama
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Kaede Osanai
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Shusuke Kino
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Takanori Kanazawa
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, Graduate School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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Kimata R, Yoshihara N, Terukina T, Kanazawa T, Kondo H. Impact of Properties of Hydrated Silicon Dioxide as Core Material on the Characteristics of Drug-containing Particles Prepared by the 2-step Process Melt Granulation Technology, MALCORE ®. AAPS PharmSciTech 2022; 24:28. [PMID: 36577811 DOI: 10.1208/s12249-022-02492-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/14/2022] [Indexed: 12/30/2022] Open
Abstract
Drug-containing particles (DCPs) are frequently used as cores in the development of solid oral dosage forms. The wet layering technique, which is a typical approach for preparing DCPs, requires the use of solvents and a long manufacturing time. In our previous study, we developed a novel manufacturing technology, MALCORE®, which can solve these problems through melt granulation. However, particle size control methods for DCPs in MALCORE® and the effect of the physical properties of the hydrated silicon dioxide (HSD) used for the core have not been clarified. The aim of this study was to examine the effects of the particle and pore sizes of HSD on the properties of the prepared DCPs. The results showed that the DCPs prepared using MALCORE® could be controlled by the particle size of HSD. The drug-loading efficiency tended to decrease as HSD particle size increased. Additionally, the amount of drug layering in DCPs increased as the pore size of HSD increased, but HSDs with a pore size much larger than the particle size were not able to properly layer the drug. These findings are helpful for applying MALCORE® to a variety of oral drug formulations.
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Affiliation(s)
- Ryota Kimata
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan.,Pharmaceutical Development Department, Sawai Pharmaceutical Co, Miyahara 5-Chome, Yodogawa-Ku, Ltd, 2-30, Japan
| | - Naoki Yoshihara
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan.,Pharmaceutical Development Department, Sawai Pharmaceutical Co, Miyahara 5-Chome, Yodogawa-Ku, Ltd, 2-30, Japan
| | - Takayuki Terukina
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan
| | - Takanori Kanazawa
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-Ku, Shizuoka, 422-8526, Japan.
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Kurano T, Kanazawa T, Iioka S, Kondo H, Kosuge Y, Suzuki T. Intranasal Administration of N-acetyl-L-cysteine Combined with Cell-Penetrating Peptide-Modified Polymer Nanomicelles as a Potential Therapeutic Approach for Amyotrophic Lateral Sclerosis. Pharmaceutics 2022; 14:2590. [PMID: 36559085 PMCID: PMC9785447 DOI: 10.3390/pharmaceutics14122590] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
Intranasal administration is a promising route for direct drug delivery to the brain; its combination with nanocarriers enhances delivery. We have previously shown that intranasal administration combined with PEG-PCL-Tat (a nanocarrier) efficiently delivers drugs to the brain and exhibits excellent therapeutic efficacy against brain diseases. We aimed to clarify whether intranasal administration combined with PEG-PCL-Tat represents a useful drug delivery system (DDS) for amyotrophic lateral sclerosis (ALS) pharmacotherapy. We used N-acetyl-L-cysteine (NAC) as a model drug with low transferability to the spinal cord and determined the physicochemical properties of NAC/PEG-PCL-Tat. After intranasal administration of NAC/PEG-PCL-Tat, we measured the survival duration of superoxide dismutase-1 G93A mutant transgenic mice (G93A mice), widely used in ALS studies, and quantitatively analyzed the tissue distribution of NAC/PEG-PCL-Tat in ddY mice. The mean particle size and zeta potential of NAC/PEG-PCL-Tat were 294 nm and + 9.29 mV, respectively. Treatment with repeated intranasal administration of NAC/PEG-PCL-Tat considerably prolonged the median survival of G93A mice by 11.5 days compared with that of untreated G93A mice. Moreover, the highest distribution after a single administration of NAC/PEG-PCL-Tat was measured in the spinal cord. These results suggest that intranasal administration combined with PEG-PCL-Tat might represent a useful DDS for ALS therapeutics.
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Affiliation(s)
- Takumi Kurano
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi 274-8555, Chiba, Japan
| | - Takanori Kanazawa
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi 274-8555, Chiba, Japan
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Shizuoka, Japan
| | - Shingo Iioka
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Shizuoka, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Shizuoka, Japan
| | - Yasuhiro Kosuge
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi 274-8555, Chiba, Japan
| | - Toyofumi Suzuki
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi 274-8555, Chiba, Japan
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10
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Obayashi K, Kodate N, Kondo H, Okamoto Y, Kaneko H, Ishii Y, Nonoda T, Masuyama S. 14 EXAMINING THE IMPACT OF SAFETY MONITORING DEVICES ON CARE WORK AND PROCESSES IN JAPANESE NURSING HOMES. Age Ageing 2022. [DOI: 10.1093/ageing/afac218.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Although the impact of new technology on the workplace has been discussed for many years, little has been reported regarding the effect of new technology in nursing homes. The aim of the research was to test the effect of a safety monitoring device on night-time work patterns.
Methods
A monitoring sensor with an infrared camera was installed in Tokyo-based residential nursing homes in April 2020. A pre/post intervention and observation study was conducted before and after the introduction of the device. Four care professionals worked each night in pairs (one person providing care, and the other observing and keeping minute-by-minute records of task and time allocated to each task. The tasks were divided into 33 items). The data were collected by two pairs at three different nights for pre-intervention and from two pairs at two nights for post-intervention. Ten care professionals participated in the study, and they were looking after 30 older adults (86.8 +/- 6.8 years old).
Results
The total time for executing various tasks marginally increased from 978 mins to 1033 mins. However, statistically significant changes were found mainly among items related to medical care and safety. While nurse call response time decreased significantly, the proportion of time allocated to personal care such as vital checks (from 1 to 2 percent) and mobility (from 4 to 9 percent) assistance doubled. Break time also increased significantly.
Conclusion
While the introduction of a safety monitoring system did not radically reduce the workload, it changed the patterns of caregiving during the night shift. Some behavioural changes were directly caused by functions of the system, while others were by-products. Staff’s break length also increased. The findings suggest that the introduction of Information and Communication Technology (ICT) in nursing homes has the potential to release time to care.
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Affiliation(s)
- K Obayashi
- Nihon Fukushi University , Mihama, Japan
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
| | - N Kodate
- School of Social Policy, Social Work and Social Justice , Dublin, Ireland
- Hokkaido University Public Policy Research Center, , Sapporo, Japan
- L’École des hautes études en sciences sociales, Fondation France Japon , Paris, France
- Institute for Future Initiatives , Tokyo, Japan
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
- UCD Centre for Japanese Studies , Dublin, Ireland
| | - H Kondo
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
| | - Y Okamoto
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
| | - H Kaneko
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
| | - Y Ishii
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
| | - T Nonoda
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
| | - S Masuyama
- Tokyo Medical University , Tokyo, Japan
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
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11
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Yamaguchi M, Kanazawa T, Morino S, Iioka S, Watanabe Y, Dohi N, Higashi K, Kondo H, Ishikawa T. Increased Tropism of Extracellular Vesicles Derived from Palmitic Acid-Treated Hepatocytes to Activated Hepatic Stellate Cells. Membranes (Basel) 2022; 12:1023. [PMID: 36295784 PMCID: PMC9610261 DOI: 10.3390/membranes12101023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Myofibroblast-like activated hepatic stellate cells (aHSCs), which produce collagen, a major cause of liver fibrosis, are specific target cells for antifibrotic treatment. Recently, several reports have indicated that extracellular vesicles (EVs) play important roles in cell-to-cell communication through their tropism for specific cells or organs. Therefore, the present study aimed to identify aHSC-directed EVs by focusing on cell-to-cell interactions in the liver under pathological conditions. EVs were derived from the hepatocyte cell line AML12 treated with or without palmitic acid (PA) and evaluated for their physical properties and uptake by the aHSC cell line LX-2. AML12-derived EVs had a mean particle diameter of 110-130 nm, negative charge, and expressed the exosomal makers CD9 and CD63. PA-treated AML12 cells released larger EVs with higher protein levels than those without PA treatment. The intracellular uptake efficacy of EVs derived from PA-treated AML12 cells into activated LX-2 cells was significantly higher than those without PA treatment. Our study revealed that PA treatment induces hepatocytes to release EVs with aHSC-tropism. These findings may contribute to the development of an EV-based drug delivery system (DDS) for aHSC-targeted therapy and provide new insights into the role of steatotic hepatocyte-derived EVs in physiological or pathophysiological functions.
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Affiliation(s)
- Momoka Yamaguchi
- Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Takanori Kanazawa
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Sumire Morino
- Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Shingo Iioka
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yuta Watanabe
- Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Naoki Dohi
- Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Kenjirou Higashi
- Laboratory of Pharmaceutical Technology, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-0856, Japan
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tomohisa Ishikawa
- Department of Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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12
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Yoshida M, Yukawa H, Hayashi K, Naitoh I, Miyabe K, Hori Y, Natsume M, Jinno N, Kato A, Kachi K, Asano G, Sahashi H, Toyohara T, Kuno K, Kito Y, Kondo H, Hirano A, Okumura F, Anbe K, Baba Y, Kataoka H, Tanaka Y. Clinical impact of bile-derived exosomal microRNAs as novel diagnostic and prognostic biomarkers for biliary tract cancers. Cancer Sci 2022; 114:295-305. [PMID: 36168845 PMCID: PMC9807502 DOI: 10.1111/cas.15597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/08/2022] [Accepted: 09/17/2022] [Indexed: 01/07/2023] Open
Abstract
Sampling of bile juice during endoscopic retrograde cholangiopancreatography (ERCP) has potential benefit of being amenable to the identification of novel biomarkers in liquid biopsy. This study reports the results of a global investigation of exosomal microRNAs (miRNAs) in bile to identify potential biomarkers for biliary tract cancers (BTCs). Eighty-eight bile samples collected during ERCP (45 BTC and 43 noncancer control samples) were enrolled in this study. Eleven BTC samples and nine control samples were assigned as the discovery set. Exosomes in bile and serum samples were collected using a glass membrane column with size-controlled macroporous glass (MPG), and exosomal miRNA expression profiles were evaluated using comprehensive miRNA microarray analysis (3D-Gene). For validation, exosomal miRNA in the bile samples of 34 BTCs and 34 controls were comprehensively evaluated using 3D-Gene. In the discovery set, eight exosomal miRNAs in bile were identified as significant aberrant expression markers, while no miRNA with aberrant expression in serum was identified. In a comparison of the discovery and validation sets, miR-451a and miR-3619-3p were identified as reproducible upregulated markers, and the combination of the two bile miRNAs showed an excellent area under the curve (0.819) value for diagnosing BTCs. In addition, high miR-3619-3p expression in bile reflects poorer prognosis of BTCs (hazard ratio = 2.89). The MPG-extracted exosomal miRNAs in bile aspirated during ERCP provide a convenient new approach for diagnosing biliary diseases. Bile-derived miRNA analysis with miR-451a and miR-3619-3p represents a potentially valuable diagnostic strategy for identifying BTCs as well as a predictive indicator of BTC prognosis.
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Affiliation(s)
- Michihiro Yoshida
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiroshi Yukawa
- Department of Biomolecular Engineering, Graduate School of EngineeringNagoya UniversityNagoyaJapan
| | - Kazuki Hayashi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Itaru Naitoh
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Katsuyuki Miyabe
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yasuki Hori
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Makoto Natsume
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Naruomi Jinno
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Akihisa Kato
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Kenta Kachi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Go Asano
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hidenori Sahashi
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Tadashi Toyohara
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Kayoko Kuno
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yusuke Kito
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiromu Kondo
- Department of GastroenterologyNagoya City East Medical CenterNagoyaJapan
| | - Atsuyuki Hirano
- Department of GastroenterologyNagoya City West Medical CenterNagoyaJapan
| | - Fumihiro Okumura
- Department of GastroenterologyGifu Prefectural Tajimi HospitalTajimiJapan
| | - Kaiki Anbe
- Department of GastroenterologyToyokawa City HospitalToyokawaJapan
| | - Yoshinobu Baba
- Department of Biomolecular Engineering, Graduate School of EngineeringNagoya UniversityNagoyaJapan
| | - Hiromi Kataoka
- Department of Gastroenterology and MetabolismNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yasuhito Tanaka
- Department of Gastroenterology and Hepatology, Faculty of Life SciencesKumamoto UniversityKumamotoJapan
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13
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Kondo H, Maejima H, Maruyama K, Fujita M, Ohki T. First Report of Chinese Wheat Mosaic Virus that Infects Barley in Japan. Plant Dis 2022; 106:PDIS12212803PDN. [PMID: 35084947 DOI: 10.1094/pdis-12-21-2803-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- H Kondo
- Institute of Plant Science and Resources (IPSR), Okayama University, Kurashiki, 710-0046, Japan
| | - H Maejima
- Nagano Prefecture Agricultural Experiment Station, Suzaka, Nagano, 382-0051, Japan
| | - K Maruyama
- Institute of Plant Science and Resources (IPSR), Okayama University, Kurashiki, 710-0046, Japan
| | - M Fujita
- Institute of Plant Science and Resources (IPSR), Okayama University, Kurashiki, 710-0046, Japan
| | - T Ohki
- NARO Hokkaido Agricultural Research Center, Sapporo, Hokkaido, 062-8555, Japan
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14
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Terukina T, Uchiyama Y, Kikuma F, Fukumitsu S, Iwata N, Kanazawa T, Kondo H. A New Approach for Characterizing the Thixotropic Properties of Gel Formulations as Sprayable Agents Based on Rheological Analysis. AAPS PharmSciTech 2022; 23:119. [PMID: 35449239 DOI: 10.1208/s12249-022-02276-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/08/2022] [Indexed: 01/01/2023] Open
Abstract
The present study evaluated the rheological properties of gel formulations composed of the thixotropic peptide amphiphile, palmitoyl-glycine-histidine (Pal-GH), and the thickener, propylene glycol alginate (PGA), to propose a proper approach to design sprayable gel formulations with good spray performance and high retention of a therapeutic agent. The hysteresis loop area (HLA), a conventional index of thixotropy, was determined from the relationship between the shear stress and shear rate of various formulations with different amounts of Pal-GH and PGA. In addition, a new assessment method for characterizing the thixotropy using the initial structure recovery speed was determined based on the time course of the complex modulus (G*) after structural breakdown of the gel formulations. The G* values increased with the increase in the amount of Pal-GH and PGA, indicating that the formulations were not deformable. Additionally, high HLA and high initial structure recovery speed are preferable when selecting a formulation with good spray performance and high retention. As suitable combinations of Pal-GH and PGA could exhibit both high HLA and high initial structure recovery speed, they are promising components for gel formulations to be used as sprayable agents with good spray performance and high retention. The results also suggested that the initial structure recovery speed would reflect the thixotropy for the formulation more appropriately than HLA. Thus, the initial structure recovery speed could be a useful scale for the preparation of sprayable gel formulations.
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Affiliation(s)
- Takayuki Terukina
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan
| | - Yoshiki Uchiyama
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan
| | - Fumiya Kikuma
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan
| | - Saki Fukumitsu
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan
| | - Nana Iwata
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan
| | - Takanori Kanazawa
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Sciences, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Sizuoka-shi, Shizuoka, 422-8526, Japan.
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15
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Kurano T, Kanazawa T, Ooba A, Masuyama Y, Maruhana N, Yamada M, Iioka S, Ibaraki H, Kosuge Y, Kondo H, Suzuki T. Nose-to-brain/spinal cord delivery kinetics of liposomes with different surface properties. J Control Release 2022; 344:225-234. [PMID: 35296406 DOI: 10.1016/j.jconrel.2022.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/21/2022] [Accepted: 03/08/2022] [Indexed: 11/28/2022]
Abstract
The administration of liposomes via nose-to-brain delivery is expected to become a strategy for efficient drug delivery to the central nervous system. Efficient nose-to-brain delivery and the kinetics of drugs administered in this manner depend on the properties of liposomes. However, there is a lack of basic knowledge of which liposomes are suitable for this purpose. Here, a qualitative study of intranasally administered liposomes (positively charged, neutral, and negatively charged, with or without polyethylene glycol [PEG] modification; particle size <100 nm) was performed to elucidate their dynamics in the brain and spinal cord. Additionally, a quantitative investigation was performed to ascertain their distribution in each part of the brain and spinal cord. The effects of liposome surface charge and PEG modification on the kinetics and distribution post intranasal administration were investigated via two experiments. Qualitative evaluation was performed via ex vivo observation after intranasal administration of fluorescently labeled liposomes. Neutral PEG-modified liposomes were distributed throughout the brain and spinal cord 60 min after administration, and the fluorescence intensity increased with time. By contrast, non-PEG-modified neutral liposomes showed particularly strong fluorescence in the olfactory bulb, and the fluorescence was localized in the anterior part of the brain. Positively charged liposomes showed low fluorescence around the lateral part of the brain and lumbar spinal cord 60 min after administration. Low fluorescence was observed in the whole brain and spinal cord, with strong fluorescence being observed in the olfactory bulb after 120 min of administration. Negatively charged liposomes showed no fluorescence at 60 min after administration, but low fluorescence was observed throughout the brain and spinal cord 120 min after administration. We quantified the radioactivity in the brain and spinal cord after intranasal administration of radioisotope-labeled liposomes. Neutral liposomes showed the highest distribution by area under the drug concentration-time curve (AUC(60-120)) in the brain and spinal cord compared to other liposomes. Compared with negatively charged liposomes, positively charged liposomes had a higher distribution in the olfactory bulb and forebrain, while negatively charged liposomes had a higher distribution in the hindbrain and bulbospinal tract cord. In addition, the distribution of PEG-modified neutral liposomes in the brain and spinal cord was significantly enhanced compared to that of non-PEG-modified neutral liposomes after 90 min of intranasal administration. These results indicate that surface charge and PEG modification strongly affect the efficiency of nose-to-brain delivery kinetics, and that PEG-modified neutral liposomes are excellent carriers for drug delivery to a wide area of the brain and spinal cord.
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Affiliation(s)
- Takumi Kurano
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Takanori Kanazawa
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan; School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Aoi Ooba
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Yudai Masuyama
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Nao Maruhana
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Mayu Yamada
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Shingo Iioka
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hisako Ibaraki
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yasuhiro Kosuge
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Toyofumi Suzuki
- School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi, Chiba 274-8555, Japan
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16
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Yoshida T, Kojima H, Sako K, Kondo H. Drug delivery to the intestinal lymph by oral formulations. Pharm Dev Technol 2022; 27:175-189. [PMID: 35037843 DOI: 10.1080/10837450.2022.2030353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Oral drug delivery systems (DDS) targeting lymphocytes in intestinal lymphatic vessels, ducts, and nodes are useful for treating diverse diseases. The intestinal lymph harbors numerous lymphocyte subsets, and DDS containing lipids such as triglycerides and fatty acids can deliver drugs to the lymph through the chylomicron pathway. DDS are efficient, thus allowing the administration of reduced drug doses, which mitigate systemic adverse effects. Here we review orally administered lipid formulations comprising oil solutions, suspensions, micro/nanoemulsions, self-micro/nano emulsifying DDS, liposomes, micelles, solid lipid nanoparticles, and nanostructured lipid carriers for targeting drugs to the lymph. We first describe the structures of lymphatic vessels and lymph nodes and the oral absorption of lipids and drugs into the intestinal lymph. We next summarize the effects of the properties and amounts of lipids and drugs delivered into the lymph and lymphocytes, as well as their effects on drug delivery ratios of lymph to blood. Finally, we describe lymphatic DDS containing saquinavir, tacrolimus, and methotrexate, and their potency that reduce drug concentrations in blood, which are associated with systemic adverse effects.
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Affiliation(s)
- Takayuki Yoshida
- Drug Delivery, Pharmaceutical Research and Technology Labs., Astellas Pharma Inc., Yaizu, Japan
| | - Hiroyuki Kojima
- Pharmaceutical Research and Technology Labs., Astellas Pharma Inc., Yaizu, Japan
| | - Kazuhiro Sako
- Corporate Advocacy, Astellas Pharma Inc., 2-5-1, Nihonbashi-honcho, Chuo-ku, Tokyo, 103-0023, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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17
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Kambayashi A, Murano M, Imai S, Miyata K, Sugita K, Fujii Y, Kinoshita M, Nomura A, Kimoto T, Miyazaki Y, Sakakibara H, Kakuda S, Tsujimoto T, Fujita Y, Kano M, Nakamura H, Akaogi S, Honda M, Anraku M, Kamada N, Ohta K, Uchida M, Kataoka M, Kikuchi H, Yamashita S, Kondo H. Interspecies differences in gastrointestinal physiology affecting the in vivo performance of oral pharmaceutical solid dosage forms. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Ogawa Y, Yano R, Iino R, Kanamori K, Shiozawa Y, Kondo H, Kamimura M, Kisui E, Sakurai S, Ogawa T, Nagamuma A. Nutrition diagnosis and length of hospital stay based on glim criteria. Clin Nutr ESPEN 2021. [DOI: 10.1016/j.clnesp.2021.09.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Yoshihara N, Kimata R, Terukina T, Kanazawa T, Kondo H. Novel preparation approach with a 2-step process for spherical particles with high drug loading and controlled size distribution using melt granulation: MALCORE®. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.103409] [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: 11/01/2022]
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20
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Terukina T, Takizawa T, Iioka S, Suzuki F, Kanazawa T, Kondo H. Characterization of the viscoelasticity of disintegrants by dynamic rheological analysis. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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21
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Shimizu S, Naitoh I, Okumura F, Hirano A, Miyabe K, Nishi Y, Takada H, Haneda K, Anbe K, Yoshida M, Kondo H, Sano H, Hayashi K, Kataoka H. One-step versus two-step distal self-expandable metal stent placement: A multicenter prospective randomized trial. J Gastroenterol Hepatol 2021; 36:2015-2021. [PMID: 33382137 DOI: 10.1111/jgh.15393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/21/2020] [Accepted: 12/24/2020] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Two methods of transpapillary covered self-expandable metal stent (SEMS) placement are used for distal malignant biliary obstruction (MBO): after initial drainage by plastic stent (two-step method) and without previous drainage (one-step method). METHODS In total, 90 patients with unresectable pancreatic cancer and distal MBO were enrolled in this prospective multicenter randomized study and allocated to one-step (n = 45) and two-step (n = 45) groups. The main outcome was the time to recurrent biliary obstruction (TRBO). Secondary outcomes were the rates of early and late adverse events, survival time, the time required for bilirubin level reduction, and cost-effectiveness. RESULTS The median TRBO did not differ significantly between the one-step and two-step groups (not available vs 314 days, P = 0.134). SEMS migration occurred significantly more frequently in the two-step group (14.3% vs 0%, P = 0.026). No significant difference was observed between groups in early (7.3% vs 14.3%, P = 0.483) or late (12.2% and 11.9%, P = 1) adverse events other than RBO, survival time (P = 0.104), or the median number of days required to reach a bilirubin level considered to be acceptable for chemotherapy administration (<3 mg/dL; P = 0.881). The total costs of stent placement and reintervention were significantly lower in the one-step SEMS group (3347 vs 5465 US dollars, P < 0.001). CONCLUSIONS The superiority of TRBO with two-step SEMS placement was not demonstrated. One-step SEMS placement might be a promising method from the viewpoints of cost-effectiveness and less invasiveness (UMIN-CTR clinical trial registration number: UMIN000016010).
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Affiliation(s)
- Shuya Shimizu
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Fumihiro Okumura
- Department of Gastroenterology, Gifu Prefectural Tajimi Hospital, Tajimi, Japan
| | - Atsuyuki Hirano
- Department of Gastroenterology, Nagoya City West Medical Center, Nagoya, Japan
| | - Katsuyuki Miyabe
- Department of Gastroenterology, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Yuji Nishi
- Department of Gastroenterology, Toyokawa Municipal Hospital, Toyokawa, Japan
| | - Hiroki Takada
- Department of Gastroenterology, Kasugai Municipal Hospital, Kasugai, Japan
| | - Kenichi Haneda
- Department of Gastroenterology, Gifu Prefectural Tajimi Hospital, Tajimi, Japan
| | - Kaiki Anbe
- Department of Gastroenterology, Toyokawa Municipal Hospital, Toyokawa, Japan
| | - Michihiro Yoshida
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiromu Kondo
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hitoshi Sano
- Department of Gastroenterology, Toyokawa Municipal Hospital, Toyokawa, Japan
| | - Kazuki Hayashi
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiromi Kataoka
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Hashimoto T, Takahashi K, Ota S, Okumura N, Kondo H, Fukatsu A, Hara T. P88.04 Successful Low-Dose Treatment for Patients with ROS1-Rearranged NSCLC who Developed Crizotinib-Related Heart Failure. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1264] [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: 10/21/2022]
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23
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Ito K, Hasegawa J, Iwahata H, Iwahata Y, Furuya N, Homma C, Kondo H, Suzuki N. Amniocele after laparoscopic myomectomy: is expectant management acceptable? Ultrasound Obstet Gynecol 2020; 56:944-946. [PMID: 31994245 DOI: 10.1002/uog.21984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Affiliation(s)
- K Ito
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - J Hasegawa
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Iwahata
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Y Iwahata
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - N Furuya
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - C Homma
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Kondo
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - N Suzuki
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan
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24
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Kondo H, Akoumianakis I, Akawi N, Kotanidis C, Antonopoulos A, Carena M, Badi I, Oikonomou E, Reus E, Krasopoulos G, Chuaiphichai S, Shirodaria C, Channon K, Casadei B, Antoniades C. Direct effects of canagliflozin on human myocardial redox signalling: a novel role for SGLT1 inhibition. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Recent clinical trials have demonstrated a role for sodium glucose cotransporter 2 (SGLT2) inhibitors in improving cardiovascular outcomes in heart failure patients, but the underlying mechanisms remain unknown. We investigated the direct effects of canagliflozin, a non-selective SGLT1/SGLT2 inhibitor on myocardial redox signalling in humans.
Methods
Study 1 included 364 patients undergoing cardiac surgery. Human right atrial appendage biopsies, obtained during surgery, were used to quantify the sources of superoxide (O2.-) and the gene expression of inflammation, fibrosis and myocardial stretch markers. In Study 2, myocardial biopsies from 51 patients were used ex vivo to study the direct effects of canagliflozin on O2.- generation and understand its role in controlling the activity of NADPH-oxidases and uncoupled nitric oxide synthase (NOS). Finally, we used differentiated H9C2 and human primary cardiomyocytes (hCM) to further characterise the key regulatory mechanisms (Study 3).
Results
SGLT1 was abundantly expressed in the human myocardial biopsies and hCM whilst SGLT2 was barely detectable. SGLT1 expression levels were positively correlated with basal O2.- production and the expression of natriuretic peptides, proinflammatory cytokines and pro-fibrotic markers in human myocardial biopsies from study 1. Incubation of human myocardium with canagliflozin significantly reduced basal and NADPH-oxidase-derived O2.- via AMP kinase (AMPK)-mediated suppression of GTP-activation and consequent reduction of membrane translocation of Rac1, an NADPH-oxidase subunit. This resulted in reduced oxidation and increased bioavailability of tetrahydrobiopterin, the nitric oxide synthase (NOS) co-factor essential for enzymatic coupling, leading to improved NOS coupling. These findings were replicated in hCM, where canagliflozin was shown to regulate AMP/ATP ratio, which could be upstream of AMPK activation. The effects of canagliflozin were significantly attenuated by knocking-down SGLT1 in hCM. Transcriptional profiling of hCM treated with canagliflozin revealed that canagliflozin had striking effects on myocardial redox signalling, causing suppression of apoptotic and inflammatory pathways in the human heart.
Conclusions
We demonstrate for the first time in humans that canagliflozin suppresses myocardial NADPH-oxidase activity and improves NOS coupling through an SGLT1/AMPK/Rac1-mediated pathway, leading to global anti-inflammatory and anti-apoptotic effects in the human myocardium. These findings provide a mechanistic basis for the beneficial effects of SGLT1/2 inhibitors in patients with heart failure.
Funding Acknowledgement
Type of funding source: Foundation. Main funding source(s): 1. British Heart Foundation (FS/16/15/32047 and PG/13/56/30383 to CA, CH/16/1/32013 to KC, and Centre of Research Excellence award RG/13/1/30181), 2. The Japanese Heart Rhythm Society-European Heart Rhythm Association fellowship grant sponsored by Biotronik.
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Affiliation(s)
- H Kondo
- University of Oxford, Oxford, United Kingdom
| | | | - N Akawi
- University of Oxford, Oxford, United Kingdom
| | - C Kotanidis
- University of Oxford, Oxford, United Kingdom
| | | | - M Carena
- University of Oxford, Oxford, United Kingdom
| | - I Badi
- University of Oxford, Oxford, United Kingdom
| | - E Oikonomou
- University of Oxford, Oxford, United Kingdom
| | - E Reus
- University of Oxford, Oxford, United Kingdom
| | | | | | | | - K Channon
- University of Oxford, Oxford, United Kingdom
| | - B Casadei
- University of Oxford, Oxford, United Kingdom
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25
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Hasegawa J, Iwahata Y, Kondo H, Suzuki N. Development of placenta over entire uterine cavity following laparoscopic uterine-sparing adenomyomectomy. Eur J Obstet Gynecol Reprod Biol 2020; 255:265-266. [PMID: 33077262 DOI: 10.1016/j.ejogrb.2020.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 10/02/2020] [Accepted: 10/08/2020] [Indexed: 11/24/2022]
Affiliation(s)
- J Hasegawa
- Department of Obstetrics and Gynaecology, St. Marianna University School of Medicine, Kawasaki, Japan.
| | - Y Iwahata
- Department of Obstetrics and Gynaecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Kondo
- Department of Obstetrics and Gynaecology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - N Suzuki
- Department of Obstetrics and Gynaecology, St. Marianna University School of Medicine, Kawasaki, Japan
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26
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Imanishi A, Kawazoe T, Hamada Y, Kumagai T, Tsutsui K, Sakai N, Eto K, Noguchi A, Shimizu T, Takahashi T, Han G, Mishima K, Kanbayashi T, Kondo H. Early detection of Niemann-pick disease type C with cataplexy and orexin levels: continuous observation with and without Miglustat. Orphanet J Rare Dis 2020; 15:269. [PMID: 32993765 PMCID: PMC7523321 DOI: 10.1186/s13023-020-01531-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 04/27/2020] [Accepted: 09/07/2020] [Indexed: 12/30/2022] Open
Abstract
Study objectives Niemann-Pick type C (NPC) is an autosomal recessive and congenital neurological disorder characterized by the accumulation of cholesterol and glycosphingolipids. Symptoms include hepatosplenomegaly, vertical supranuclear saccadic palsy, ataxia, dystonia, and dementia. Some cases frequently display narcolepsy-like symptoms, including cataplexy which was reported in 26% of all NPC patients and was more often recorded among late-infantile onset (50%) and juvenile onset (38%) patients. In this current study, we examined CSF orexin levels in the 10 patients of NPC with and without cataplexy, which supports previous findings. Methods Ten patients with NPC were included in the study (5 males and 5 females). NPC diagnosis was biochemically confirmed in all 10 patients, from which 8 patients with NPC1 gene were identified. We compared CSF orexin levels among NPC, narcoleptic and idiopathic hypersomnia patients. Results Six NPC patients with cataplexy had low or intermediate orexin levels. In 4 cases without cataplexy, their orexin levels were normal. In 5 cases with Miglustat treatment, their symptoms stabilized or improved. For cases without Miglustat treatment, their conditions worsened generally. The CSF orexin levels of NPC patients were significantly higher than those of patients with narcolepsy-cataplexy and lower than those of patients with idiopathic hypersomnia, which was considered as the control group with normal CSF orexin levels. Discussion Our study indicates that orexin level measurements can be an early alert of potential NPC. Low or intermediate orexin levels could further decrease due to reduction in the neuronal function in the orexin system, accelerating the patients’ NPC pathophysiology. However with Miglustat treatment, the orexin levels stabilized or improved, along with other general symptoms. Although the circuitry is unclear, this supports that orexin system is indeed involved in narcolepsy-cataplexy in NPC patients. Conclusion The NPC patients with cataplexy had low or intermediate orexin levels. In the cases without cataplexy, their orexin levels were normal. Our study suggests that orexin measurements can serve as an early alert for potential NPC; furthermore, they could be a marker of therapy monitoring during a treatment.
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Affiliation(s)
- A Imanishi
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan
| | - T Kawazoe
- Department of Neurology, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Y Hamada
- Department of Pediatrics, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - T Kumagai
- National Center for Child Health and Development, Tokyo, Japan
| | - K Tsutsui
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan
| | - N Sakai
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Eto
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - A Noguchi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - T Shimizu
- Akita Mental Health and Welfare Center, Akita, Japan
| | - T Takahashi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - G Han
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
| | - K Mishima
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan.,International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
| | - T Kanbayashi
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan.
| | - H Kondo
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
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Imanishi A, Yoshizawa K, Tsutsui K, Omori Y, Ono T, Ito Uemura S, Mishima K, Kondo H, Kanbayashi T. 0757 Increasing Number of Cases Who Had Both Hypersomnolence Disorders and Developmental Disorders With Orexin Measurements. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Recently, attention has been paid to the relationship between developmental disorders such as attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD), and sleep disorders. We meet many developmental disorder patients who complaint hypersomnolence. Among these patients, cases with coexistence of central hypersomnia and developmental disorders, or developmental disorder alone were increased. Therefore, we first investigated patients with the complaint of hypersomnolence, who were also suspected developmental disorders. Furthermore, we have been measuring CSF orexin in 17 cases suspected of both disorders to investigate orexin levels of these patients.
Methods
86patients who complained of EDS with suspicion of developmental disorders had been examined. In order to diagnose hypersomnolence disorders, PSG and MSLT were performed. Psychological examinations were performed for diagnosing developmental disorders.We have been measuring for CSF orexin in 17 cases suspected both hypersomnolence and developmental disorders. We examined the onset of hypersomnolence and the clinical history of these ADHD or ASD cases for more details.
Results
In 86 examined cases, developmental disorders coexisted in 30 cases. Among 30 cases, ADHD were 18, ASD were 6 and both diagnosed were 6 cases. Among them, 20 cases diagnosed as having coexistence of hypersomnia (8: narcolepsy, 12: IHS) and developmental disorders (ADHD:12, ASD:4, ADHD/ASD:4). In 17 cases with orexin measurements, 10 cases coexisted ADHD and 4 cases coexisted ASD. Two cases diagnosed as both ADHD and ASD. In 10 ADHD cases, 3 cases had low orexin levels, and 7 cases had normal orexin levels. Other 7 ASD cases had normal orexin levels.
Conclusion
ADHD has a higher rate of central hypersomnia (12/18) compared with ASD and the rate of narcolepsy was also high (5/12). While patients in ASD was diagnosed as IHS (3/6), narcolepsy cases were not observed. It became clear that the majority of patients had developmental disorder or had a tendency for developmental disorder before the onset of hypersomnolence.Although it is possible that ADHD/ASD symptoms may be exacerbated by orexin dysfunctions, ADHD/ASD may not newly occur. There were cases with low orexin levels, but it seems that narcolepsy happened to coexist with developmental disorders.
Support
a
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Affiliation(s)
- A Imanishi
- Akita University School of Medicine, Akita, JAPAN
| | - K Yoshizawa
- Akita University School of Medicine, Akita, JAPAN
| | - K Tsutsui
- Akita University School of Medicine, Akita, JAPAN
| | - Y Omori
- Tokyo Metropolitan Geriatric Hospital, Tokyo, JAPAN
| | - T Ono
- Sleep & Circadian Neurobiology Laboratory, Stanford University,, California, CA
| | - S Ito Uemura
- Akita University Graduate School of Health Sciences, Akita, JAPAN
| | - K Mishima
- Akita University School of Medicine, Akita, JAPAN
| | - H Kondo
- International Institute for Integrative Sleep Medicine (IIIS), Tsukuba University,, Tsukuba, JAPAN
| | - T Kanbayashi
- International Institute for Integrative Sleep Medicine (IIIS), Tsukuba University,, Tsukuba, JAPAN
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28
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Kambayashi A, Sako K, Kondo H. Scintigraphic evaluation of the in vivo performance of dry-coated delayed-release tablets in humans. Eur J Pharm Biopharm 2020; 152:116-122. [PMID: 32380166 DOI: 10.1016/j.ejpb.2020.04.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/21/2020] [Accepted: 04/25/2020] [Indexed: 11/26/2022]
Abstract
We characterized the gastrointestinal (GI) transit and drug release characteristics of dry-coated delayed-release tablets under both prandial states in humans using a gamma scintigraphy approach. We also estimated the onset time of drug release from the dry-coated tablets after dissolution of the outer layer in a clinical study, and compared findings with those of in vitro release testing. The dry-coated tablets used in this study were composed of a core containing radiolabeled resin (111-Indium) and a gel forming outer layer made of polyethylene oxide and polyethylene glycol. The dry-coated tablets were administered to human subjects in the fasted and fed state (30 min after ingestion of a standard breakfast radiolabeled with 99m-Technetium). Gastric emptying time, small intestinal transit time, and onset of radioactivity release in the GI tract were estimated from scintigraphic imaging. Release characteristics of the radiolabel from the dry-coated tablets were also assessed in in vitro dissolution testing using a USP apparatus 2 (paddle). Ingestion of food affected the gastric emptying time of the dry-coated tablets but not small intestinal transit. Onset timing of the release of radioactivity from the core of two different formulas of dry-coated tablets was characterized. The onset timing of drug release in the fasted subjects was markedly similar to that in the in vitro dissolution testing at a paddle rate of 200 rpm.
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Affiliation(s)
- Atsushi Kambayashi
- Pharmaceutical Research and Technology Labs, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka 425-0072, Japan; School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Kazuhiro Sako
- Astellas Ireland Co., Ltd., Damastown Road, Damastown Industrial Park, Mulhuddart, Dublin 15, Ireland
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
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Kobayashi T, Fukami H, Ishikawa E, Shibata K, Kubota M, Kondo H, Sahara Y. An fMRI Study of the Brain Network Involved in Teeth Tapping in Elderly Adults. Front Aging Neurosci 2020; 12:32. [PMID: 32256334 PMCID: PMC7090023 DOI: 10.3389/fnagi.2020.00032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 02/03/2020] [Indexed: 11/18/2022] Open
Abstract
Cortical activity during jaw movement has been analyzed using various non-invasive brain imaging methods, but the contribution of orofacial sensory input to voluntary jaw movements remains unclear. In this study, we used functional magnetic resonance imaging (fMRI) to observe brain activities during a simple teeth tapping task in adult dentulous (AD), older dentulous (OD), and older edentulous subjects who wore dentures (OEd) or did not wear dentures (OE) to analyze their functional network connections. (1) To assess the effect of age on natural activation patterns during teeth tapping, a comparison of groups with natural dentition—AD and OD—was undertaken. A general linear model analysis indicated that the major activated site in the AD group was the primary sensory cortex (SI) and motor cortex (MI) (p < 0.05, family wise error corrected). In the OD group, teeth tapping induced brain activity at various foci (p < 0.05, family wise error corrected), including the SI, MI, insula cortex, supplementary motor cortex (SMC)/premotor cortex (PMA), cerebellum, thalamus, and basal ganglia in each group. (2) Group comparisons between the OD and OEd subjects showed decreased activity in the SI, MI, Brodmann’s area 6 (BA6), thalamus (ventral posteromedial nucleus, VPM), basal ganglia, and insular cortex (p ¡ 0.005, uncorrected). This suggested that the decreased S1/M1 activity in the OEd group was related to missing teeth, which led to reduced periodontal afferents. (3) A conjunction analysis in the OD and OEd/OE groups revealed that commonly activated areas were the MI, SI, cerebellum, BA6, thalamus (VPM), and basal ganglia (putamen; p < 0.05, FWE corrected). These areas have been associated with voluntary movements. (4) Psychophysiological interaction analysis (OEd vs OE) showed that subcortical and cortical structures, such as the MI, SI, DLPFC, SMC/PMA, insula cortex, basal ganglia, and cerebellum, likely function as hubs and form an integrated network that participates in the control of teeth tapping. These results suggest that oral sensory inputs are involved in the control of teeth tapping through feedforward control of intended movements, as well as feedback control of ongoing movements.
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Affiliation(s)
- T Kobayashi
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Japan
| | - H Fukami
- Department of Physiology, School of Dentistry, Iwate Medical University, Shiwa-gun, Japan.,Department of Oral Health Sciences, Faculty of Nursing and Health Care, Baika Women's University, Osaka, Japan
| | - E Ishikawa
- Department of Physiology, School of Dentistry, Iwate Medical University, Shiwa-gun, Japan
| | - K Shibata
- Department of Physiology, School of Dentistry, Iwate Medical University, Shiwa-gun, Japan
| | - M Kubota
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Japan
| | - H Kondo
- Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Japan
| | - Y Sahara
- Department of Physiology, School of Dentistry, Iwate Medical University, Shiwa-gun, Japan
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30
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Kambayashi A, Sako K, Kondo H. Characterization of the buccal and gastric transit of orally disintegrating tablets in humans using gamma scintigraphy. Int J Pharm 2020; 576:118937. [PMID: 31816352 DOI: 10.1016/j.ijpharm.2019.118937] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/15/2019] [Accepted: 12/02/2019] [Indexed: 01/04/2023]
Abstract
The present study characterized the buccal cavity-emptying and gastric-emptying kinetics of orally disintegrating tablets (ODTs) in fasted humans using gamma scintigraphy. 111Indium-diethylenetriaminepentaacetic acid and technetium-99 m-labeled ion exchange resin were used as a model soluble drug and insoluble pellet-type drug, respectively, and housed in ODTs. These ODTs were then administered to human subjects with or without ingestion of water, after which scintigraphic images were collected in order to characterize the buccal and gastric transit of the radioactivity. The oral disintegration of the ODTs was extremely rapid, with a mean time of ≤1 min. The buccal emptying of the radioactivity was most rapid for the ODT with a water-soluble radiolabel; however, the ODTs with water-insoluble radiolabels showed buccal emptying with median half-times of ≤2.5 min. The ODT with the soluble radiolabel in subjects without water ingestion showed the most rapid gastric emptying compared with the ODTs with the insoluble radiolabels, the gastric-emptying time of which was highly variable. Further, water ingestion did not markedly affect the gastric-emptying time of the tablets with the water-soluble model drug. The observations in the present clinical study will help clarify the in vivo performance of ODTs in humans.
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Affiliation(s)
- Atsushi Kambayashi
- Pharmaceutical Research and Technology Labs, Astellas Pharma Inc., 180 Ozumi, Yaizu, Shizuoka 425-0072, Japan; School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Kazuhiro Sako
- Astellas Ireland Co., Ltd., Damastown Road, Damastown Industrial Park, Mulhuddart, Dublin 15, Ireland
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
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Abstract
High consumption of oil formulations has been reported to reduce the blood exposure of drugs like tacrolimus. Consumption of oil formulations has also been shown to inhibit T-cell production of interleukin-2 (IL-2) compared to solid dispersion formulations (SDFs). However, a large amount of oil causes gastrointestinal side effects such as diarrhea and low compliance. Here, we investigated the feasibility of reducing the amount of oil and substitution of chemically synthetized oils for natural oils in these formulations. Reducing the amount of sunflower oil increased blood tacrolimus exposure despite sufficient suppression of IL-2 production. While medium-chain triglyceride (MCT) increased tacrolimus blood exposure, addition of 10% glyceryl monostearate (GMS) to MCT significantly decreased drug blood exposure without requiring a large amount of oil (p < .05). Effects of the contents of GMS in the MCT/GMS formulations, and fatty acid composition in GMS on drug blood exposure were also investigated. The results indicated that both the amount and type of oil were important for maintaining a good balance between a reduction in blood exposure and sufficient IL-2 suppression. The ratio of drug concentration in lymphocytes to that in whole blood after dosing with an oil formulation was significantly higher than that after administration of the SDF (p < .01). These results indicate the feasibility of developing oral oil tacrolimus formulations to reduce systemic side effects and maintain high efficacy for practical use in patients.
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Affiliation(s)
- Takayuki Yoshida
- Drug Delivery, Pharmaceutical Research and Technology Labs, Astellas Pharma Inc, Yaizu, Japan
| | | | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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Hasegawa J, Kurasaki A, Hata T, Homma C, Miura A, Kondo H, Suzuki N. Diagnosis of placenta accreta spectrum using ultra-high-frequency probe and Superb Microvascular Imaging. Ultrasound Obstet Gynecol 2019; 54:705-707. [PMID: 30584683 DOI: 10.1002/uog.20207] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/18/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Affiliation(s)
- J Hasegawa
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
- Department of Perinatology and Gynecology, Kagawa University Graduate School of Medicine, Miki, Kagawa, Japan
| | - A Kurasaki
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
| | - T Hata
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
- Department of Perinatology and Gynecology, Kagawa University Graduate School of Medicine, Miki, Kagawa, Japan
| | - C Homma
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
| | - A Miura
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
| | - H Kondo
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
| | - N Suzuki
- Department of Obstetrics and Gynecology, St Marianna University School of Medicine, Kawasaki, Japan
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Kondo H, Akoumianakis I, Akawi N, Cristina M, Herdman L, Badi I, Kotanidis C, Akbar N, Antonopoulos A, Oikonomou E, Chuaiphichai S, Channon K, Antoniades C. P6267Novel direct effects of SGLT2 inhibitor, Canagliflozin, on myocardial redox state in humans. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0866] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Sodium glucose cotransporter 2 (SGLT2) inhibitors are antidiabetic drugs that control plasma glucose levels by inhibiting reabsorption of glucose in kidney. Recent clinical trials have suggested a class effect of SGLT2 inhibitors in preventing hospitalization due to heart failure. However, the underlying mechanism has not been fully elucidated.
Purpose
We investigated the direct effect of the SGLT2 inhibitor, Canagliflozin (Cana), on myocardial redox state in humans.
Methods
The study included 48 patients undergoing cardiac surgery. Fresh myocardial tissues were incubated ex vivo with or without Cana and then used for superoxide quantification and Western immunoblotting. NADPH-oxidases activity was evaluated with NADPH 100μM stimulation, while nitric oxide synthase (NOS) coupling was assessed by using N(ω)-nitro-L-arginine methyl ester (L-NAME, a NOS inhibitor). A human cardiomyocyte (HCM) cell line was also used for in vitro validation of the effects of Cana on myocardium.
Results
Ex vivo incubation of myocardium with Cana significantly reduced baseline (A) and NADPH-oxidase-derived O2·− (B) and improved NOS coupling reflected by positive L-NAME delta O2·− values (C). Regulation of NADPH-oxidases activity by Cana was found to result from reduced GTP-activation (D) and consequent membrane translocation (E) of Rac1, a key subunit of NADPH-oxidases. Cana also reduced tetrahydrobiopterin (BH4) oxidation, increasing its bioavailability (F), which is a key mechanism to improve NOS coupling. Incubation with Cana enhanced phosphorylation of AMPK, and the downstream signalling, ACC (not shown). Additional Compound C, which is inhibitor of AMPK, significantly reversed these effects of Cana (A, B, C, D, E, F). These findings were replicated in HCM (not shown). In line with these, Cana increased the ADP/ATP ratio of cytoplasm in HCM, which could provide an upstream mechanism for AMPK activation.
Conclusions
We demonstrate for the first time in humans, that Cana suppresses myocardial NADPH-oxidases activity and improves NOS coupling through an AMPK-mediated pathway. This could be an underlying mechanism for the cardioprotective effects of SGLT2 inhibitors.
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Affiliation(s)
- H Kondo
- University of Oxford, Oxford, United Kingdom
| | | | - N Akawi
- University of Oxford, Oxford, United Kingdom
| | - M Cristina
- University of Oxford, Oxford, United Kingdom
| | - L Herdman
- University of Oxford, Oxford, United Kingdom
| | - I Badi
- University of Oxford, Oxford, United Kingdom
| | - C Kotanidis
- University of Oxford, Oxford, United Kingdom
| | - N Akbar
- University of Oxford, Oxford, United Kingdom
| | | | - E Oikonomou
- University of Oxford, Oxford, United Kingdom
| | | | - K Channon
- University of Oxford, Oxford, United Kingdom
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Tamaki Y, Yaku H, Yamamoto E, Ozasa N, Inuzuka Y, Kondo H, Tamura T, Morimoto T, Nakagawa Y, Kimura T, Kato T. P4544Impact of hyponatremia improvement on one-year outcomes in patients with acute decompensated heart failure. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Impact of hyponatremia improvement on prognosis in patients with acute decompensated heart failure (ADHF) remains unclear.
Methods
Patients hospitalized for ADHF at 19 hospitals in Japan were enrolled between October 2014 and March 2016. Hyponatremia was defined as serum sodium concentration less than 135 mmol/l. Primary endpoint was composite of all-cause death and heart failure rehospitalization one year after discharge.
Results
Among 3805 patients enrolled, 486 patients with hyponatremia at admission showed higher in-hospital mortality (13.3% vs. 5.4%, p<0.001). Of 486 hyponatremic patients, 396 patients were discharged alive. One hundred forty-three patients showed persistent hyponatremia at discharge (group P), whereas 253 patients showed improvement of hyponatremia (group I). Baseline characteristics are shown in the table. Patients in group I showed higher sodium concentration at admission (132±3 mmol/l vs. 130±4 mmol/l, p<0.001) and more increase in serum sodium concentration at discharge (7±4 mmol/l vs. 1±5 mmol/l, p<0.001). One-year survival rate free from primary endpoint was not different between the groups (56.4% in group P vs. 58.5% in group I, p=0.79). After adjusting for confounders, improvement of hyponatremia was not associated with better prognosis (hazard ratio 1.00; 95% confidence interval 0.70–1.45, p=0.99). Hyponatremia improvement showed significant interaction with left ventricular ejection fraction (LVEF) less than 40% (p=0.01). In patients with LVEF<40%, improvement of hyponatremia was associated with better prognosis (hazard ratio 0.48, 95% confidence interval 0.28–0.85, p=0.01) whereas not in patients LVEF≥40%.
Patient characteristics Group P (n=143) Group I (n=253) p value Age (years) 81 (72–86) 81 (72–87) 0.73 Female 71 (49.7) 110 (43.5) 0.24 Ischemic etiology 42 (29.4) 81 (32.0) 0.58 Prior hospitalization 62 (43.7) 98 (39.5) 0.42 SBP at admission (mmHg) 140±36 144±38 0.40 HR at admission (bpm) 92±23 95±29 0.27 Atrial Fibrillation 47 (32.9) 103 (40.7) 0.12 NYHA class IV 60 (42.2) 138 (54.8) 0.02 Intravenous inotropic use 35 (24.5) 59 (23.3) 0.80 LVEF <40% 54 (37.8) 95 (37.6) 0.97 Values are median (interquartile range), mean ± standard deviation or number (%).
Conclusion
Improvement of hyponatremia at discharge was not associated with better prognosis in patients hospitalized for ADHF.
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Affiliation(s)
- Y Tamaki
- Tenri Hospital, Department of Cardiology, Tenri, Japan
| | - H Yaku
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - E Yamamoto
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - N Ozasa
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - Y Inuzuka
- Shiga General Hospital, Department of Cardiology, Moriyama, Japan
| | - H Kondo
- Tenri Hospital, Department of Cardiology, Tenri, Japan
| | - T Tamura
- Tenri Hospital, Department of Cardiology, Tenri, Japan
| | - T Morimoto
- Hyogo College of Medicine, Department of Clinical Epidemiology, Nishinomiya, Japan
| | - Y Nakagawa
- Shiga University of Medical Science, Department of Cardiovascular Medicine, Otsu, Japan
| | - T Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - T Kato
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
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Abe I, Terabayashi T, Teshima Y, Ishii Y, Miyoshi M, Kira S, Kondo H, Saito S, Yufu K, Takahashi N, Ishizaki T. 1181Role of rho-mdia1 signaling to maintain cardiac function in response to pressure overload in mice. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0023] [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
Cardiac hypertrophy is a compensatory response to pressure overload that leads to heart failure. Recent studies have shown that Rho signaling has crucial regulatory roles in actin cytoskeleton rearrangement during cardiac hypertrophic responses. Rho is rapidly activated in response to pressure overload, but the mechanisms by which Rho and its downstream proteins control actin dynamics during hypertrophic responses remain unclear.
Objective
To identify the essential roles of mDia1 (Rho-effector molecule) in pressure overload-induced ventricular hypertrophy.
Methods and results
Male wild-type (WT) and mDia1-knockout (mDia1KO) mice (10–12 weeks old) were subjected to transverse aortic constriction (TAC) or a sham operation. The heart weight/tibia length ratio, cardiomyocyte cross-sectional area, left ventricular wall thickness, and expression of hypertrophy-specific genes were significantly decreased in mDia1KO mice 3 weeks after TAC, and the mortality rate was higher at 12 weeks. Echocardiography and the pressure-volume loop indicated that mDia1 deletion increased the severity of heart failure 8 weeks after TAC. Microarray gene expression profiling showed that the induction of immediate early genes due to the TAC operation was significantly lower in mDia1KO mice than WT mice, as was the activation of extracellular signal-regulated kinase (ERK) and focal adhesion kinase (FAK). We examined the role of mDia1 in neonatal rat ventricular cardiomyocytes (NRVMs) exposed to mechanical stress. The siRNA-mediated silencing of mDia1 attenuated stretch-induced ERK and FAK phosphorylation, and gene expression of c-fos. Importantly, loss of mDia1 suppressed an increase in the F/G-actin ratio in response to pressure overload in the mice. In addition, increases in nuclear myocardin-related transcription factors (MRTFs) and serum response factor (SRF) were perturbed in response to pressure overload in mDia1KO mice and to mechanical stretch in mDia1 depleted NRVMs.
Conclusions
Rho-mDia1, through actin dynamics, plays critical roles in pressure overload-induced hypertrophy by regulating ERK and FAK phosphorylation and the transcriptional activity of MRTF-SRF.
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Affiliation(s)
- I Abe
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - T Terabayashi
- Oita University, Department of Pharmacology, Yufu, Japan
| | - Y Teshima
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - Y Ishii
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - M Miyoshi
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - S Kira
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - H Kondo
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - S Saito
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - K Yufu
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - N Takahashi
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - T Ishizaki
- Oita University, Department of Pharmacology, Yufu, Japan
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Ishii Y, Yufu K, Kira S, Miyoshi M, Abe I, Oniki T, Kondo H, Saito S, Fukui A, Okada N, Akioka H, Shinohara T, Teshima Y, Nakagawa M, Takahashi N. 4090Maximum standardized uptake value of pericardial fat for prediction of ventricular arrhythmias in patients with cardiac sarcoidosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0102] [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
Cardiac sarcoidosis is a cause of epicarditis and sustained life-threatening ventricular arrhythmias. These arrhythmias occasionally arise from epicardial. Positron emission tomogramphy-comututed tomography (PET-CT) is useful for diagnosis with sarcoidosis. However, the usefulness for prediction of ventricular arrhythmias in patients with cardiac sarcoidosis is unknown.
Objective
We hypothesized that the evaluation of pericardial fat inflammation could identify high-risk sarcoidosis patients for ventricular arrhythmias.
Methods
We enrolled 20 consecutive patients with cardiac sarcoidosis performed PET-CT between August 2016 and December 2018. In each case, we measured the maximum standardized uptake value (SUVmax) of pericardial fat around the left atrium, both ventricules, atrioventricular groove, and left main coronary.
Results
Seven patients experienced ventricular tachycardia (VT) or ventricular fibrillation (VF). VT/VF patients had significantly more complete right bundle branch block (P=0.035), larger left atrial dimension (P=0.021), larger left ventricular end-diastolic dimension (P=0.005), lower ejection fraction (P=0.007), and higher E/e' (P=0.004). SUVmax of pericardial fat in the roof of left atrium (LA) and left ventricular (LV) with VT/VF patients were significantly higher than non-VT/VF patients (LA: 1.63 vs 1.32, P=0.0311; LV: 1.84 vs 1.26, P=0.045). The cut-off values of SUVmax derived from the ROC curve in the roof of LA and LV are 1.47 and 1.59 respectively. The Kaplan Meire estimator showed that high SUVmax patients in the roof of LA had significantly more detection of NSVT.
Conclusions
Our results suggest the relationship between SUVmax and VT/VF occurrence in patients with cardiac sarcoidosis. The evaluateon of SUVmax may be useful for VT/VF risk stratification.
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Affiliation(s)
- Y Ishii
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - K Yufu
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - S Kira
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - M Miyoshi
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - I Abe
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - T Oniki
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - H Kondo
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - S Saito
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - A Fukui
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - N Okada
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - H Akioka
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - T Shinohara
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - Y Teshima
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - M Nakagawa
- Oita University, Department of Medical Education Center, Faculty of Medicine, Yufu, Japan
| | - N Takahashi
- Oita University, Department of Medical Education Center, Faculty of Medicine, Yufu, Japan
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Mori T, Kondo H, Naitoh I, Koyama T, Takenaka Y, Komai H, Araki S, Kitagawa M, Nishigaki N, Tanaka Y, Itoh K, Hasegawa C, Kawai T, Hayashi K. Endoscopic Ultrasonography-guided Fine-needle Aspiration Revealed Metastasis-induced Acute Pancreatitis in a Patient with Adrenocortical Carcinoma. Intern Med 2019; 58:2645-2649. [PMID: 31178487 PMCID: PMC6794166 DOI: 10.2169/internalmedicine.2450-18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
A 26-year-old woman complained of upper abdominal pain. Computed tomography (CT) showed acute pancreatitis, a left adrenal tumor and solitary right pulmonary metastasis. She underwent left adrenalectomy; the adrenal tumor was diagnosed as adrenocortical carcinoma (ACC). When preparing to resect the pulmonary metastasis, she suffered a second acute pancreatic attack. Magnetic resonance cholangiopancreatography (MRCP) showed that the proximal main pancreatic duct (MPD) was dilated, and the distal MPD was diminished; however, no pancreatic tumor was observed on CT or MRCP. Endoscopic ultrasonography revealed a solitary pancreatic mass, which was diagnosed as pancreatic metastasis from ACC by endoscopic ultrasonography-guided fine-needle aspiration.
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Affiliation(s)
- Toshitaka Mori
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Hiromu Kondo
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Itaru Naitoh
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Japan
| | - Tetsuo Koyama
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Yuya Takenaka
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Hirohiko Komai
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Sachiko Araki
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Mika Kitagawa
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Japan
| | | | - Yoshito Tanaka
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Keisuke Itoh
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Chihiro Hasegawa
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Takashi Kawai
- Department of Gastroenterology, Nagoya City East Medical Center, Japan
| | - Kazuki Hayashi
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Japan
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Kiniwa R, Miyake M, Kimura SI, Itai S, Kondo H, Iwao Y. Development of muco-adhesive orally disintegrating tablets containing tamarind gum-coated tea powders for oral care. Int J Pharm X 2019; 1:100012. [PMID: 31517277 PMCID: PMC6733284 DOI: 10.1016/j.ijpx.2019.100012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/07/2019] [Accepted: 04/03/2019] [Indexed: 11/17/2022]
Abstract
The aim of this study was to design and evaluate muco-adhesive orally disintegrating tablets manufactured by microwave irradiation and containing polysaccharide. We prepared orally disintegrating tea tablets (ODTTs) containing a 1 w/w% mass fraction of one of five polysaccharides (gum arabic, carrageenan, guar gum, tamarind gum, or pectin) and evaluated the swelling degree, tablet hardness, friability, disintegration time, and adhesive properties. All tablets had a swelling degree of about 1 mm, a hardness of over 13 N, and a friability degree of <1%. Tablets containing gum arabic and tamarind gum had disintegration times of 30 s or less and satisfied requirements as orally disintegrating tablets. This could be attributed to their high void contents, which allowed for water penetration. The adhesive properties and particle retention ratios were highest in ODTTs containing tamarind gum, which was thought to be caused by the rapid disintegration and high viscosity of the tamarind gum itself. When we investigated changing the mass fraction of tamarind gum, we found 1 w/w% was most suitable for rapid disintegration and high adhesiveness. The ODTTs containing 1 w/w% tamarind gum showed significant growth inhibition towards Streptococcus mutans. Therefore, microwave irradiation technology and addition of tamarind gum could be used to manufacture muco-adhesive orally disintegrating tablets for oral care.
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Affiliation(s)
- Rika Kiniwa
- Laboratory of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Masaki Miyake
- Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Shin-ichiro Kimura
- Laboratory of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Shigeru Itai
- Laboratory of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hiromu Kondo
- Laboratory of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yasunori Iwao
- Laboratory of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
- Corresponding author.
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Iwao Y, Ishida H, Kimura SI, Wakimoto T, Kondo H, Itai S, Noguchi S. Crystal Structures of Flavone C-Glycosides from Oolong Tea Leaves: Chafuroside A Dihydrate and Chafuroside B Monohydrate. Chem Pharm Bull (Tokyo) 2019; 67:935-939. [PMID: 31474732 DOI: 10.1248/cpb.c19-00166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chafuroside A and chafuroside B are flavone C-glycosides isolated from oolong tea leaves. They have a number of beneficial pharmacological activities related to antiinflammation at various concentrations. However, no crystallographic study of chafurosides has yet been reported. In the present study, the crystal structures of chafuroside A and chafuroside B were investigated using single-crystal X-ray diffraction. The asymmetric unit of the chafuroside A crystal consists of one chafuroside A and two water molecules, and that of chafuroside B contains one chafuroside B and one water molecule. The flavone moiety of chafuroside A is curved, i.e., the angle between the best-fit planes of the chromene and phenyl rings is 18.9°, whereas the chafuroside B flavone moiety is relatively flat. A comparison of the curvatures of the flavone moieties of various C-glycosides showed that the curvature of chafuroside A is significantly larger than those of the others. This structural feature might contribute to the differences between the strengths of the pharmacological activities of chafurosides A and B.
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Affiliation(s)
- Yasunori Iwao
- Graduate School of Pharmaceutical Sciences, University of Shizuoka
| | - Hitoshi Ishida
- Graduate School of Pharmaceutical Sciences, University of Shizuoka
| | | | | | - Hiromu Kondo
- Graduate School of Pharmaceutical Sciences, University of Shizuoka
| | - Shigeru Itai
- Graduate School of Pharmaceutical Sciences, University of Shizuoka
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Oyaidzu M, Kondo H, Park C, Teduka M, Ochiai K, Kasugai A. Applicability of alleviated limits of non-metallic impurities in lithium for advanced fusion neutron source. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.02.140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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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41
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Kimura SI, Ishikawa T, Iwao Y, Itai S, Kondo H. Fabrication of Zero-Order Sustained-Release Floating Tablets via Fused Depositing Modeling 3D Printer. Chem Pharm Bull (Tokyo) 2019; 67:992-999. [DOI: 10.1248/cpb.c19-00290] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Shin-ichiro Kimura
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka
| | - Taichi Ishikawa
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasunori Iwao
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka
| | - Shigeru Itai
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka
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42
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Kaihara M, Hojo K, Tajiri T, Kambayashi A, Yoshida T, Katakawa Y, Motonaga K, Kimura SI, Iwao Y, Kondo H. Novel Dissolution Approach for Tacrolimus-Loaded Microspheres Using a Dialysis Membrane for in Vitro-in Vivo Correlation. Chem Pharm Bull (Tokyo) 2019; 67:467-475. [PMID: 31061372 DOI: 10.1248/cpb.c18-01018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to establish a novel approach to in vitro dissolution evaluation using a combination of the paddle method and a dialysis membrane, both to predict the overall in vivo performance of tacrolimus microspheres and also to identify a suitable dissolution test method to describe the in vivo initial burst phenomenon. This new dissolution method for evaluating the release of tacrolimus from microspheres consisted of rotating a customized paddle inside a dialysis membrane using a conventional paddle apparatus. Findings were compared with a method in which the paddle was rotated outside the dialysis membrane, the conventional paddle method, and the flow-through cell method. We concluded that the paddle method with a dialysis membrane and internal agitation, which was designed to mimic in vivo conditions, predicted the overall pharmacokinetic (PK) profile of tacrolimus microspheres whereas the conventional paddle method described the initial burst. These findings suggest that it may not be possible to predict both the PK profile and initial burst using a single analysis method. We therefore recommend that evaluation of the initial burst be performed separately. In conclusion, we propose that combination of the paddle method with a dialysis membrane and internal agitation to evaluate the overall PK profile, together with the paddle method to describe the in vivo initial burst, represents a novel approach to in vitro dissolution evaluation for microsphere formulations.
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Affiliation(s)
- Masanori Kaihara
- Analytical Research Labs., Astellas Pharma Inc.,School of Pharmaceutical Sciences, University of Shizuoka
| | - Kazuhiro Hojo
- Analytical Research Labs., Astellas Pharma Europe B.V
| | | | | | | | | | | | | | - Yasunori Iwao
- School of Pharmaceutical Sciences, University of Shizuoka
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka
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Matsumoto K, Kimura SI, Itai S, Kondo H, Iwao Y. In vivo temperature-sensitive drug release system trigged by cooling using low-melting-point microcrystalline wax. J Control Release 2019; 303:281-288. [PMID: 31026549 DOI: 10.1016/j.jconrel.2019.04.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/19/2019] [Accepted: 04/20/2019] [Indexed: 10/27/2022]
Abstract
Temperature-sensitive formulations are attractive controlled-release formulations, which release an incorporated drug by changes in body temperature induced by external temperature stimulation. Recently, it has been reported that wax matrix (WM) particles composed of a low-melting-point microcrystalline wax (MCW) released only a small amount of the drug at 37 °C, whereas faster drug release occurred at 25 °C. In this study, temperature-sensitive formulations composed of low-melting-point MCW that release drugs triggered by cooling, rather than heating, were developed. In an in vitro dissolution test in which the test medium was repeatedly cooled from 37 to 25 °C, control of the promotion and suppression of drug release was achieved. The drug concentration in the plasma of rats administered the particles was significantly increased by cooling compared with non-cooling, indicating that the drug release from the particles was promoted by cooling both in vitro and in vivo. Therefore, particles composed of low-melting-point MCW should be useful for the development of cooling-triggered, temperature-sensitive formulations.
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Affiliation(s)
- Kohei Matsumoto
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Shin-Ichiro Kimura
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Shigeru Itai
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yasunori Iwao
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
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44
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Ohwada G, Minakuchi S, Sato Y, Kondo H, Nomura T, Tsuboi A, Hong G, Itoh Y, Kawai Y, Kimoto S, Gunji A, Suzuki A, Suzuki T, Kimoto K, Hoshi N, Saita M, Yoneyama Y, Sato Y, Morokuma M, Okazaki J, Maeda T, Nakai K, Ichikawa T, Nagao K, Fujimoto K, Murata H, Kurogi T, Yoshida K, Nishimura M, Nishi Y, Murakami M, Hosoi T, Hamada T. Subjective Evaluation of Denture Adhesives: A Multicenter Randomized Controlled Trial. JDR Clin Trans Res 2019; 5:50-61. [PMID: 30975019 DOI: 10.1177/2380084419837607] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Many reports show that denture adhesives improve the retention and stability of dentures. However, few randomized controlled trials have examined the effects of denture adhesives. OBJECTIVE This 10-center randomized controlled trial with parallel groups involving 200 edentulous patients wearing complete dentures aimed to evaluate the effects of short-term use of cream and powder denture adhesives. METHODS Patients were allocated into 2 cream- and powder-type adhesive groups and 1 control group. Intervention groups were treated with the 2 adhesives (1 each), and the control group received saline solution. Adhesive or control was applied to the denture-mucosal surface for 4 d, and data at baseline and after day 4 of intervention (i.e., 8 meals) were obtained. Patient satisfaction was evaluated with a 100-mm visual analog scale. Oral health-related quality of life was measured with the Japanese version of the Oral Health Impact Profile for Edentulous Patients. Perceived chewing ability was evaluated by a questionnaire regarding ease of chewing and swallowing food. Between-group comparisons were performed with Kruskal-Wallis tests with the Mann-Whitney U test adjusted by Bonferroni correction. Within-group comparisons of pre- and postintervention measurements were performed with the Wilcoxon signed-rank test. Intention-to-treat analysis was also performed. RESULTS Between-group comparisons showed no significant differences for general satisfaction or Oral Health Impact Profile for Edentulous Patients. However, significant differences in satisfaction with various denture functions with cream- and powder-type adhesives were seen in pre- and postintervention comparisons (P < 0.05). Significant differences were also observed for perceived chewing ability of hard foods (P < 0.05). CONCLUSION These results suggest that although denture adhesives do not invariably improve denture function, they do affect subjective evaluations and possibly chewing of hard foods. Therefore, the effects of denture adhesive use are insufficient to resolve any fundamental dissatisfaction with dentures ( ClinicalTrials.gov NCT01712802 ). KNOWLEDGE TRANSFER STATEMENT The results of this study suggest that denture adhesives should be applied under certain conditions; however, an appropriate diagnosis is important before application. These practice-based data provide information to establish evidence-based guidelines for applying denture adhesives.
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Affiliation(s)
- G Ohwada
- The Japan Denture Care Society.,Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - S Minakuchi
- The Japan Denture Care Society.,Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Sato
- The Japan Denture Care Society.,Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Kondo
- The Japan Denture Care Society.,Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Japan
| | - T Nomura
- The Japan Denture Care Society.,Department of Prosthodontics and Oral Implantology, School of Dentistry, Iwate Medical University, Morioka, Japan
| | - A Tsuboi
- The Japan Denture Care Society.,Division of Community Oral Health Science, Department of Community Medical Supports, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - G Hong
- The Japan Denture Care Society.,Liaison Center for Innovative Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Y Itoh
- The Japan Denture Care Society.,Division of Aging and Geriatric Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Y Kawai
- The Japan Denture Care Society.,Department of Removable Prosthodontics, School of Dentistry, Nihon University, Matsudo, Japan
| | - S Kimoto
- The Japan Denture Care Society.,Department of Removable Prosthodontics, School of Dentistry, Nihon University, Matsudo, Japan
| | - A Gunji
- The Japan Denture Care Society.,Department of Removable Prosthodontics, School of Dentistry, Nihon University, Matsudo, Japan
| | - A Suzuki
- The Japan Denture Care Society.,Department of Removable Prosthodontics, Graduate School of Dentistry, Nihon University, Matsudo, Japan
| | - T Suzuki
- The Japan Denture Care Society.,Section of Oral Prosthetic Engineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - K Kimoto
- The Japan Denture Care Society.,Division of Prosthodontics and Oral Rehabilitation, Department of Oral Function and Restoration, Graduate School of Dentistry, Kanagawa Dental University, Yokosuka, Japan
| | - N Hoshi
- The Japan Denture Care Society.,Division of Prosthodontics and Oral Rehabilitation, Department of Oral Function and Restoration, Graduate School of Dentistry, Kanagawa Dental University, Yokosuka, Japan
| | - M Saita
- The Japan Denture Care Society.,Division of Prosthodontics and Oral Rehabilitation, Department of Oral Function and Restoration, Graduate School of Dentistry, Kanagawa Dental University, Yokosuka, Japan
| | - Y Yoneyama
- The Japan Denture Care Society.,Department of Removable Prosthodontics, School of Dental Medicine, Tsurumi University, Yokohama, Japan
| | - Y Sato
- The Japan Denture Care Society.,Department of Removable Prosthodontics, School of Dental Medicine, Tsurumi University, Yokohama, Japan
| | - M Morokuma
- The Japan Denture Care Society.,Department of Removable Prosthodontics, School of Dental Medicine, Tsurumi University, Yokohama, Japan
| | - J Okazaki
- The Japan Denture Care Society.,Department of Removable Prosthodontics and Occlusion, Osaka Dental University, Osaka, Japan
| | - T Maeda
- The Japan Denture Care Society.,Department of Removable Prosthodontics and Occlusion, Osaka Dental University, Osaka, Japan
| | - K Nakai
- The Japan Denture Care Society.,Department of Removable Prosthodontics and Occlusion, Osaka Dental University, Osaka, Japan
| | - T Ichikawa
- The Japan Denture Care Society.,Department of Oral and Maxillofacial Prosthodontics, Graduate School of Biomedical Sciences, Tokushima University, Tokushima City, Japan
| | - K Nagao
- The Japan Denture Care Society.,Department of Oral and Maxillofacial Prosthodontics, Graduate School of Biomedical Sciences, Tokushima University, Tokushima City, Japan
| | - K Fujimoto
- The Japan Denture Care Society.,Department of Oral and Maxillofacial Prosthodontics, Graduate School of Biomedical Sciences, Tokushima University, Tokushima City, Japan
| | - H Murata
- The Japan Denture Care Society.,Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki City, Japan
| | - T Kurogi
- The Japan Denture Care Society.,Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki City, Japan
| | - K Yoshida
- The Japan Denture Care Society.,Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki City, Japan
| | - M Nishimura
- The Japan Denture Care Society.,Department of Oral and Maxillofacial Prosthodontics, Field of Oral and Maxillofacial Rehabilitation, Course for Advanced Therapeutic, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima City, Japan
| | - Y Nishi
- The Japan Denture Care Society.,Department of Oral and Maxillofacial Prosthodontics, Field of Oral and Maxillofacial Rehabilitation, Course for Advanced Therapeutic, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima City, Japan
| | - M Murakami
- The Japan Denture Care Society.,Denture Prosthodontic Restoration, Advanced Dentistry Center, Kagoshima University Medical and Dental Hospital, Kagoshima City, Japan
| | - T Hosoi
- The Japan Denture Care Society.,School of Dental Medicine, Tsurumi University, Yokohama, Japan
| | - T Hamada
- The Japan Denture Care Society.,Hiroshima University, Hiroshima City, Japan
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Matsumoto K, Kimura SI, Noguchi S, Itai S, Kondo H, Iwao Y. Mechanism of Drug Release From Temperature-Sensitive Formulations Composed of Low-Melting-Point Microcrystalline Wax. J Pharm Sci 2019; 108:2086-2093. [PMID: 30677420 DOI: 10.1016/j.xphs.2019.01.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/07/2019] [Accepted: 01/11/2019] [Indexed: 11/15/2022]
Abstract
It was reported that wax matrix (WM) particles composed of low-melting-point microcrystalline wax showed unique release behaviors; the particles released only a small amount of the entrapped drug (non-diffusion-controlled release) at 37°C, whereas it showed comparatively fast drug release in a diffusion-controlled manner at 25°C. However, the mechanism of the drug release is still unclear. The objective of this study was to determine the mechanism of drug release from the WM particles using X-ray computed tomography. In the WM particles collected during dissolution tests at 25°C, the void space derived from drug release increased with increasing time, and there was no change in the structure, indicating that the WM particles released drug while maintaining the particle shape at 25°C. In the WM particles collected during dissolution tests at 37°C, the void space was confirmed at initial time point; however, at subsequent time points, the void space was disappeared, and the roughness of the surface was evident. This structural change may have blocked the conveyance pathway of the outer medium, which would inhibit the drug release. The difference between the drug-release mechanisms of the WM particles at the 2 temperatures will be valuable for developing cooling-triggered, temperature-sensitive formulations.
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Affiliation(s)
- Kohei Matsumoto
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Shin-Ichiro Kimura
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Shuji Noguchi
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Shigeru Itai
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Hiromu Kondo
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Yasunori Iwao
- Department of Pharmaceutical Engineering and Drug Delivery Science, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan.
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Wakai E, Watanabe K, Kondo H, Groeschel F. The design and thermo-structural analysis of target assembly for high intensity neutron source. Nuclear Materials and Energy 2018. [DOI: 10.1016/j.nme.2018.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Kobayashi M, Shinozuka D, Kondo H, Sako K, Otake K. Novel Orally Disintegrating Tablets Produced Using a High-Pressure Carbon Dioxides Process. Chem Pharm Bull (Tokyo) 2018; 66:932-938. [PMID: 30270240 DOI: 10.1248/cpb.c18-00220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It is well known that high-pressure carbon dioxide (CO2) lowers the glass transition temperature (Tg) of polymers. We therefore investigated whether Tg depression of high-pressure CO2 results in interparticle bridging of a polymer and the tablet characteristics that makes the manufacture of an orally disintegrating tablet (ODT) possible. Copolyvidone (Kollidon®) and polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer (Soluplus®) were examined and found to exhibit a large Tg depression. Placebo ODTs were prepared and hardness, disintegration rate, porosity, and change in thickness and appearance were evaluated before and after the high-pressure CO2 treatment. This enabled the establishment of the optimal conditions for pressure, temperature, and treatment time under pressure. Experimental results showed that it was possible to manufacture ODTs comprising Kollidon® as a water-soluble polymer with CO2 treatment under the suitable conditions such as temperature at 45°C, pressure lower than 8 MPa, and a treatment time shorter than 30 min, which is a new ODT manufacturing process called "Carbon Dioxide Assisted Tablet Formation Scheme" (CATS). In comparison to the conventional processes, which require high temperatures or humidity, CATS is expected to be applicable to drugs that are unstable at high temperature and humidity, and to functional drug particles used for bitter taste masking, sustained release, and other uses.
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Affiliation(s)
- Masanori Kobayashi
- Pharmaceutical Research and Technology Labs., Astellas Pharma Inc.,Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science
| | - Daisuke Shinozuka
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science
| | - Hiromu Kondo
- Pharmaceutical Research and Technology Labs., Astellas Pharma Inc
| | - Kazuhiro Sako
- Pharmaceutical Research and Technology Labs., Astellas Pharma Inc
| | - Katsuto Otake
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science
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Okumura T, Boku N, Hishida T, Ohde Y, Sakao Y, Yoshiya K, Higashiyama M, Kameyama K, Adachi H, Shiomi K, Kanzaki M, Yoshimura M, Matsuura M, Hata Y, Chen F, Yoshida K, Sasaki H, Hyodo I, Mori K, Kondo H. Impact of response to preoperative chemotherapy on the outcome of pulmonary metastasectomy for colorectal cancer: Results of a retrospective multicenter study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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49
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Kondo H, Kira S, Oniki T, Saito S, Teshima Y, Takahashi N. P4775Remarkable cardioprotective effect of interleukin-10 on sinus node dysfunction caused by streptozotocin-induced hyperglycemia in mice. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Kondo
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - S Kira
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - T Oniki
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - S Saito
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - Y Teshima
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - N Takahashi
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
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Kondo H, Abe I, Fukui A, Teshima Y, Takahashi N. P5712Interleukin-10 treatment ameliorates high-fat diet-induced inflammatory atrial remodelling and fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5712] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Kondo
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - I Abe
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - A Fukui
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - Y Teshima
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - N Takahashi
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
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