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Hattori Y, Kawaguchi Y, Joyo Y, Okamoto H, Murakami H, Waguri-Nagaya Y. Reverse Posterior Interosseous Artery Flap for Human Bite Injury to the Hand. Case Rep Orthop 2024; 2024:5392926. [PMID: 38410683 PMCID: PMC10896647 DOI: 10.1155/2024/5392926] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/27/2024] [Accepted: 02/05/2024] [Indexed: 02/28/2024] Open
Abstract
Bite injuries frequently occur on human hands. Human bite injuries to the hand may lead to an infection because of limited soft tissue protection and wound contamination. However, no studies have reported severe bite injuries on hands treated by flaps. We report a case of an 80-year-old woman diagnosed with a major neurocognitive disorder. The patient accidentally had a self-bite injury accompanied with an open metacarpal fracture. Debridement and fixation of the first metacarpal fracture were performed. Afterward, skin necrosis occurred gradually on the dorsum of the hand. Therefore, a reverse posterior interosseous artery (PIA) flap was used, and the postoperative course was uneventful. Given the high risk of infection, human bite injuries, particularly hand bites, should be treated immediately. Delayed treatment for such injuries may lead to extensive soft tissue defects requiring reconstruction with flaps.
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Affiliation(s)
- Yusuke Hattori
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, 1 Wakamizu, Chikusa-ku, Nagoya, Aichi 464-8457, Japan
| | - Yohei Kawaguchi
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Yuji Joyo
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, 1 Wakamizu, Chikusa-ku, Nagoya, Aichi 464-8457, Japan
| | - Hideki Okamoto
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Hideki Murakami
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Yuko Waguri-Nagaya
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, 1 Wakamizu, Chikusa-ku, Nagoya, Aichi 464-8457, Japan
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Usami T, Takada N, Kosuwon W, Paholpak P, Tokunaga M, Iwata H, Hattori Y, Nagaya Y, Murakami H, Kuroyanagi G. A Lateral Fracture Line Affects Femoral Trochanteric Fracture Instability and Swing Motion of the Intramedullary Nail: A Biomechanical Study. JB JS Open Access 2024; 9:e23.00118. [PMID: 38352644 PMCID: PMC10860993 DOI: 10.2106/jbjs.oa.23.00118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/16/2024] Open
Abstract
Background An unstable trochanteric femoral fracture is a serious injury, with a 1-year mortality rate of 5.4% to 24.9%, for which there is currently no standard treatment method. The lag screw insertion site is one of the primary contact areas between the cortical bone and an intramedullary nail. We hypothesized that a posterolateral fracture causes intramedullary nail instability when the posterolateral fracture line interferes with lag screw insertion. The purpose of the present study was to investigate the effect of posterolateral fracture line morphology on intramedullary nail stability by simulating unstable trochanteric femoral fractures with a posterolateral fracture fragment. Methods Eighteen custom-made synthetic osteoporotic bone samples were used in the present study. Nine samples had a posterolateral fracture line interfering with the lag screw insertion hole (Fracture A), and the other 9 had a fracture line 10 mm away from the hole (Fracture B). Cyclic loading (750 N) was applied to the femoral head 1,500 times. Movement of the end cap attached to the intramedullary nail was recorded. The amplitudes of motion in the coronal plane (coronal swing motion), sagittal plane (sagittal swing motion), and axial plane (total swing motion) were evaluated. The change in the neck-shaft angle was evaluated on photographs that were made before and after the test. Medial cortical displacement was measured before and after the test. Results Two Fracture-A samples were excluded because the amplitude of sagittal swing motion was too large. The mean values for coronal, sagittal, and total swing motion were 1.13 ± 0.28 mm and 0.51 ± 0.09 mm (p < 0.001), 0.50 ± 0.12 mm and 0.46 ± 0.09 mm (p = 0.46), and 1.24 ± 0.24 mm and 0.69 ± 0.11 mm (p < 0.001) for Fractures A and B, respectively. The mean neck-shaft angle change was -8.29° ± 2.69° and -3.56° ± 2.35° for Fractures A and B, respectively (p = 0.002). The mean displacement of the medial cortex was 0.38 ± 1.12 mm and 0.12 ± 0.37 mm for Fractures A and B, respectively (p = 0.57). Conclusions This study showed that an unstable trochanteric femoral fracture with a posterolateral fracture line that interferes with the lag screw insertion holes is a risk factor for increased intramedullary nail instability.
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Affiliation(s)
- Takuya Usami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Naoya Takada
- Department of Orthopaedic Surgery, Kainan Hospital, Yatomi, Aichi, Japan
| | - Weerachai Kosuwon
- Department of Orthopaedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Permsak Paholpak
- Department of Orthopaedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Masami Tokunaga
- Department of Orthopaedic Surgery, Fukuoka Orthopaedic Hospital, Fukuoka, Fukuoka, Japan
| | - Hidetoshi Iwata
- Department of Orthopaedic Surgery, Kainan Hospital, Yatomi, Aichi, Japan
| | - Yusuke Hattori
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Yuko Nagaya
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Gen Kuroyanagi
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
- Department of Rehabilitation Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
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Joyo Y, Yasuma S, Usami T, Hattori Y, Noda Y, Kato S, Kondo R, Watanabe S, Waguri-Nagaya Y. Nontuberculous mycobacteriosis oligoarthritis of the right hand misdiagnosed as rheumatoid arthritis: A case report. Mod Rheumatol Case Rep 2023; 8:16-20. [PMID: 37750821 DOI: 10.1093/mrcr/rxad052] [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: 12/08/2022] [Revised: 03/05/2023] [Accepted: 09/07/2023] [Indexed: 09/27/2023]
Abstract
Infection with Mycobacterium marinum has several different clinical presentations. Most commonly, it appears as a solitary papulonodular lesion on an extremity. A rare presentation of osteoarticular M. marinum involving multiple small joints and tenosynovitis of the hand, which was misdiagnosed as rheumatoid arthritis, is reported. The patient was initially treated for seronegative rheumatoid arthritis but failed to respond to methotrexate. Magnetic resonance imaging showed arthritis and tenosynovitis. Subsequently, synovial biopsy led to histological and microbiological diagnosis. Antimycobacterial treatment should be started promptly in such cases. The combined use of rifampicin, ethambutol, and clarithromycin appears to be effective, and debridement is indicated in patients with deep-seated infections.
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Affiliation(s)
- Yuji Joyo
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Sanshiro Yasuma
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Takuya Usami
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Yusuke Hattori
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Yohei Noda
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Sakurako Kato
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Ryohei Kondo
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Soichiro Watanabe
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
| | - Yuko Waguri-Nagaya
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi, Japan
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Hattori Y, Sawada T, Kido J, Sugawara K, Yoshida S, Matsumoto S, Inoue T, Hirose S, Nakamura K. Frequency of iduronate-2-sulfatase gene variants detected in newborn screening for mucopolysaccharidosis type II in Japan. Mol Genet Metab Rep 2023; 37:101003. [PMID: 38053932 PMCID: PMC10694771 DOI: 10.1016/j.ymgmr.2023.101003] [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: 05/05/2023] [Revised: 08/19/2023] [Accepted: 08/20/2023] [Indexed: 12/07/2023] Open
Abstract
Mucopolysaccharidosis II (MPS II) is an X-linked, recessive, inborn metabolic disorder caused by defects in iduronate-2-sulfatase (IDS). The age at onset, disease severity, and rate of progression vary significantly among patients. This disease is classified into severe or mild forms depending on neurological symptom involvement. The severe form is associated with progressive cognitive decline while the mild form is predominantly associated with somatic features. Newborn screening (NBS) for MPS II has been performed since December 2016, mainly in Kyushu, Japan, where 197,700 newborns were screened using a fluorescence enzyme activity assay of dried blood spots. We diagnosed one newborn with MPS II with lower IDS activity, elevated urinary glycosaminoglycans, and a novel variant of the IDS gene. In the future, NBS for MPS II is expected to be performed in many regions of Japan and will contribute to the detection of more patients with MPS II, which is crucial to the early treatment of the disorder.
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Affiliation(s)
- Yusuke Hattori
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Japan
| | - Takaaki Sawada
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Japan
- Department of Pediatrics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Jun Kido
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Japan
- Department of Pediatrics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Keishin Sugawara
- Department of Pediatrics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | | | - Shirou Matsumoto
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Japan
- Department of Pediatrics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Takahito Inoue
- Department of Pediatrics, School of Medicine, Fukuoka University, Fukuoka, Japan
- Department of Pediatrics, Fukuoka University Chikushi Hospital, Fukuoka, Japan
| | - Shinichi Hirose
- General Medical Research Center, School of Medicine, Fukuoka University, Fukuoka, Japan
| | - Kimitoshi Nakamura
- Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Japan
- Department of Pediatrics, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
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Otsuka M, Ogata T, Hattori Y, Sasaki T. Evaluation of the effect of granule size of raw tableting materials on critical quality attributes of tablets during the continuous tablet manufacturing process using near-infrared spectroscopy. Drug Dev Ind Pharm 2023; 49:692-702. [PMID: 37847490 DOI: 10.1080/03639045.2023.2271979] [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: 07/22/2023] [Accepted: 10/12/2023] [Indexed: 10/18/2023]
Abstract
OBJECTIVE The effects of granule size of raw materials on tablet hardness (TH) and weight (TW) in the continuous tablet manufacturing process (CTMP) were investigated using near-infrared spectroscopy (NIRS). METHODS Granule materials of different sizes were prepared by extrusion granulation from a standard granule formula powder containing lactose/starch and 4.5% acetaminophen. Large-, small-, and medium-sized granules were sequentially filled in a hopper, and tablets were produced continuously using a single-shot tableting machine. After arranging approximately 500 tablets in order, the tablets were subjected to NIRS. A total of 450 NIRS datasets were divided into three groups of 150 each (calibration, validation 1, and validation 2 datasets). RESULTS The best fitted calibration models for predicting TH and TW were obtained, with sufficient accuracy, based on NIRS using the partial least squares regression, and comprised both physical and chemical information. The regression and loading vectors of the calibration models suggested that the models used to predict TH and TW involve physical information based on geometrical factors of the tablet and chemical information related to binder-related intermolecular interactions. CONCLUSIONS The changes in the predicted value profiles of TH and TW using NIRS reflected the changes in the measured values depending on the raw granule size during CTMP.
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Affiliation(s)
- Makoto Otsuka
- Research Institute of Electronics, Shizuoka University, Hamamatsu, Japan
- Faculty of Pharmacy, Musashino University, Nishi-Tokyo, Japan
| | - Tokiro Ogata
- Faculty of Pharmacy, Musashino University, Nishi-Tokyo, Japan
| | - Yusuke Hattori
- Faculty of Pharmacy, Musashino University, Nishi-Tokyo, Japan
| | - Tetsuo Sasaki
- Graduate School of Medical Photonics, Shizuoka University, Hamamatsu, Shizuoka, Japan
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Iwata H, Oguri M, Hattori Y, Nakajima K, Tsuzuki Y, Hayashi K, Toshito T, Umemoto Y, Ogino H, Hiwatashi A. Phase II Clinical Trial of Hypofractionated Image-Guided Proton Therapy with 12 Fractions for Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e395-e396. [PMID: 37785323 DOI: 10.1016/j.ijrobp.2023.06.1522] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Towards hypofractionated proton therapy for prostate cancer for improving convenience for patients to receive treatment and improving therapeutic efficacy, image-guided technique with hydrogel spacer solved the late gastrointestinal toxicity, but it is unclear whether acute genitourinary (GU) toxicity is acceptable. The aim of this phase II study was to evaluate the safety and efficacy of hypofractionated image-guided proton therapy (IGPT) with 12 fractions for prostate cancer. MATERIALS/METHODS Eligibility criteria were as follows: (1) histologically confirmed primary prostate cancer; (2) T1-T3bN0M0 staged by (UICC TNM8th); (3) ECOG-PS ≤ 2; (4) age ≥ 20 years; (5) no serious underlying disease or other cancers; (6) technically capable of proton therapy, and (7) written informed consent. Primary endpoint was the ratio of grade 2 or more acute genitourinary toxicity. We used the modified CTCAE grading of grade 2 GU toxicities, in which prescribing two and more types of drugs for dysuria within 3 months of the start of radiation was considered to indicate grade 2 GU toxicity. A phase II trial was planned based on the minimax Simon's two-stage design with a significance level of 0.05 and a power of 90%. The acceptable incidence is considered to be less than 5%, and the unacceptable incidence is considered to be more than 15%. A total of 83 patients is required for completion of the trial (7 patients or fewer). After evaluating the primary endpoint in 83 patients, 217 additional patients were registered and a total of 300 patients were registered in order to further examine the safety and efficacy. The prescribed dose to the isocenter was 51.6 GyRBE in 12 fractions (4 days a week). RESULTS From January 2020 to March 2021, 30, 53, and 217 patients (total 300) were enrolled. The patient characteristics were as follows: median age, 70 (48-83) years; low/intermediate/high risk, 44/132/124. Forty-nine and 38 patients had benign prostatic hyperplasia and diabetes mellitus, respectively. Grade 2 acute GU toxicities were observed in 1, 5 and 13 patients, respectively (total 6.3%). No grade 3 or higher acute GU toxicities were observed. However, urinary retention during IGPT, which was not previously observed, was observed in 3 cases, and temporary urethral catheterization was performed (Grade 2). Most of the acute GU toxicity tended to improve at 1 month after IGPT, and almost improved at 3 months. Mean score deteriorations beyond the minimum clinically important difference threshold (1/2 SD) were observed only at 1 month in the following scales: summary (-6.0), bother (-7.0), and irritative/obstructive (-6.3). CONCLUSION Hypofractionated IGPT with 12 fractions for prostate cancer is well tolerated in acute GU toxicities. Longer follow-up is necessary to evaluate the efficacy and late toxicities. Further investigation of hypofractionated IGPT with 12 fractions for prostate cancer is warranted. Since April 2021, an additional 1000 cases of prospective registration study have been conducted.
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Affiliation(s)
- H Iwata
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - M Oguri
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Y Hattori
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - K Nakajima
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - Y Tsuzuki
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - K Hayashi
- Department of Proton Therapy Technology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - T Toshito
- Department of Proton Therapy Physics, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - Y Umemoto
- Department of Nephro-Urology, Nagoya City University West Medical Center, Nagoya, Japan
| | - H Ogino
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - A Hiwatashi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Usami T, Takada N, Iwata H, Sakai H, Hattori Y, Sekiya I, Ueki Y, Nagaya Y, Murakami H, Kuroyanagi G. A biomechanical analysis of the effect of hydroxyapatite augmentation for trochanteric femoral fractures. Exp Ther Med 2023; 25:256. [PMID: 37153894 PMCID: PMC10155252 DOI: 10.3892/etm.2023.11955] [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: 12/07/2022] [Accepted: 03/09/2023] [Indexed: 05/10/2023] Open
Abstract
Hydroxyapatite (HA) augments are used to treat trochanteric femoral fractures. However, the efficacy of HA augmentation has not been fully described in trochanteric femoral fracture surgery. In total, 85 patients were enrolled in the present study; all had trochanteric femoral fractures between January 2016 and October 2020, 45 with HA (HA group) and 40 without HA (N group). The intraoperative lag screw insertion torque was directly measured and the amount of lag screw telescoping with and without HA augmentation after surgery was analyzed. Maximum lag screw insertion torque (max-torque), bone mineral density in the opposite femoral neck (n-BMD), tip apex distance (TAD) of the lag screw, radiographic findings including fracture union, the amounts of lag screw telescoping and occurrence of complications were evaluated. A total of 12 patients were excluded if they were aged under 60 years old, had ipsilateral surgery and disorders in the hip joint, TAD of the lag screw ≥26 mm on postoperative radiographs and had measurement errors. A total of 73 fractures could be analyzed: HA group (n=36) and N group (n=37). Max-torque/n-BMD ratios were higher in the HA group compared with in the N group (7.23±2.71 vs. 5.93±1.91 g/cm2·N·m; P=0.04). The amounts of lag screw telescoping in the HA group were smaller compared with the N group (1.41±2.00 vs. 2.58±2.34; P=0.05). Evaluation of screw insertion torque showed maximum screw insertion torque correlated well with n-BMD in both groups, HA (R=0.57; P<0.01) and N group (R=0.64; P<0.01). No correlation was found between maximum screw insertion torque and TAD in both groups, HA (R=-0.10; P=0.62) and N group (R=0.02; P=0.93). All fractures were radiographically united without any complications. These results support the effectiveness of HA augmentation, indicating higher resistance against rotational instability and reduced lag screw telescoping in trochanteric femoral fracture treatment.
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Affiliation(s)
- Takuya Usami
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi 464-8547, Japan
| | - Naoya Takada
- Department of Orthopedic Surgery, Kainan Hospital, Yatomi, Aichi 498-8502, Japan
| | - Hidetoshi Iwata
- Department of Orthopedic Surgery, Kainan Hospital, Yatomi, Aichi 498-8502, Japan
| | - Hiroaki Sakai
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Yusuke Hattori
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi 464-8547, Japan
| | - Isato Sekiya
- Department of Orthopedic Surgery, Kainan Hospital, Yatomi, Aichi 498-8502, Japan
| | - Yoshino Ueki
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
- Department of Rehabilitation Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Yuko Nagaya
- Department of Orthopedic Surgery, Nagoya City University East Medical Center, Nagoya, Aichi 464-8547, Japan
| | - Hideki Murakami
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
| | - Gen Kuroyanagi
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
- Department of Rehabilitation Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi 467-8601, Japan
- Correspondence to: Dr Gen Kuroyanagi, Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
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Hattori Y, Kawaguchi Y, Usami T, Waguri-Nagaya Y, Murakami H, Okamoto H. Median Nerve Recovery and Morphological Change on MRI at 24 Months after Open Carpal Tunnel Release. J Hand Surg Asian Pac Vol 2023; 28:197-204. [PMID: 37120302 DOI: 10.1142/s2424835523500212] [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: 05/01/2023]
Abstract
Background: This study aimed to investigate the relationship between postoperative clinical results and long-term morphological changes in patients with carpal tunnel syndrome (CTS) as observed on magnetic resonance imaging (MRI) before and after open carpal tunnel release (OCTR). Methods: We retrospectively analysed data for 28 hands that had undergone OCTR with at least 24 months of follow-up data. Two-point discrimination (2PD) test results were examined for the first three fingers, as were the distal motor latency (DML) and sensory conduction velocity (SCV) of the median nerve. We also calculated the cross-sectional area (CSA) of the carpal tunnel and the distance from the median nerve to the volar carpal bone at the hamate and the pisiform levels using MRI images. Variables were compared before and 24 months after OCTR. Results: Significant improvements in all variables were observed, including average 2PD scores (Finger I: 13.1 ± 6.2 vs. 7.7 ± 4.3, p < 0.01, Finger II: 11.9 ± 6.6 vs. 7.0 ± 3.5, p < 0.01, Finger III: 13.6 ± 6.1 vs. 7.8 ± 4.5, p < 0.01), average DML (8.3 ± 3.3 vs. 4.3 ± 0.6 m/s, p < 0.01), average SCV (30.8 ± 11.0 vs. 41.3 ± 5.3 m/s, p < 0.01), CSA of the carpal tunnel (hamate level: 194.9 ± 30.6 vs. 254.2 ± 47.6 mm2, p < 0.01, pisiform level: 244.2 ± 46.5 vs. 274.7 ± 75.1 mm2, p = 0.01) and the distance between the median nerve and volar carpal bone (hamate level: 8.7 ± 1.4 vs. 11.2 ± 1.6 mm, p < 0.01, pisiform level: 11.8 ± 1.7 vs. 13.8 ± 2.5 mm, p < 0.01). Conclusions: Our results demonstrate that OCTR is successful in achieving long-term decompression and recovery of the median nerve in patients with CTS. Level of Evidence: Level III (Therapeutic).
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Affiliation(s)
- Yusuke Hattori
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Japan
| | - Yohei Kawaguchi
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takuya Usami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Japan
| | - Yuko Waguri-Nagaya
- Department of Orthopaedic Surgery, Nagoya City University East Medical Center, Nagoya, Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hideki Okamoto
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Hattori Y, Uda H, Niu A, Yoshimura K, Sugawara Y. Ambulatory sagittal split ramus osteotomy: strategy for enhanced recovery after surgery. Int J Oral Maxillofac Surg 2023; 52:476-480. [PMID: 36100528 DOI: 10.1016/j.ijom.2022.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 08/02/2022] [Accepted: 08/16/2022] [Indexed: 11/19/2022]
Abstract
The sagittal split ramus osteotomy (SSRO) has been performed mainly on an inpatient basis because of the duration of anaesthesia and the potential risk of postoperative complications, such as bleeding, pain, nausea, and vomiting. However, advances in both surgical and anaesthetic management have enabled the reduction of these risks and shortened the length of hospital stay. Thus, the SSRO may be feasible even in the ambulatory setting in elective cases. The clinical records of all patients who underwent an outpatient SSRO between August 2011 and September 2020 at Lilla Craniofacial Clinic were reviewed retrospectively. Data on age, sex, duration of surgery, operative procedures, intraoperative bleeding, and admission status were investigated. In total, 143 patients underwent a bilateral SSRO. The SSRO was performed as an isolated procedure in 73 patients and concomitantly with other surgical procedures in the remaining 70 patients. Overall, 142 of the 143 patients were discharged on the day of surgery (99.3%); only one (0.7%) required an overnight stay because of a submental haemorrhage after genioplasty. No emergency hospitalizations or readmissions occurred after discharge. Multimodal perioperative management, both surgical and anaesthetic, facilitated enhanced patient recovery after surgery, and SSRO was performed successfully and safely as an ambulatory procedure.
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Affiliation(s)
- Y Hattori
- Department of Plastic Surgery, Kanto Central Hospital of the Mutual Aid Association of Public School Teachers, Setagaya-ku, Tokyo, Japan
| | - H Uda
- Department of Plastic Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan; Lilla Craniofacial Clinic Tokyo, Chuo-ku, Tokyo, Japan.
| | - A Niu
- Department of Plastic Surgery, Kanto Central Hospital of the Mutual Aid Association of Public School Teachers, Setagaya-ku, Tokyo, Japan
| | - K Yoshimura
- Department of Plastic Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Y Sugawara
- Department of Plastic Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan; Lilla Craniofacial Clinic Tokyo, Chuo-ku, Tokyo, Japan
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10
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Yamasumi K, Ueda K, Haketa Y, Hattori Y, Suda M, Seki S, Sakai H, Hasobe T, Ikemura R, Imai Y, Ishibashi Y, Asahi T, Nakamura K, Maeda H. Charge-Segregated Stacking Structure with Anisotropic Electric Conductivity in NIR-Absorbing and Emitting Positively Charged π-Electronic Systems. Angew Chem Int Ed Engl 2023; 62:e202216013. [PMID: 36573653 DOI: 10.1002/anie.202216013] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 10/31/2022] [Indexed: 12/28/2022]
Abstract
Squarylium-based π-electronic cation with an augmented dipole was synthesized by methylation of zwitterionic squarylium. The cation formed various ion pairs in combination with anions, and the ion pairs exhibited distinct photophysical properties in the dispersed state, ascribed to the formation of J- and H-aggregates. The ion pairs provided solid-state assemblies based on cation stacking. It is noteworthy that complete segregation of cations and anions was observed in a pseudo-polymorph of the ion pair with pentacyanocyclopentadienide as a π-electronic anion. In the crystalline state, the ion pairs exhibited photophysical properties and electric conductivity derived from cation stacking. In particular, the charge-segregated ion-pairing assembly induces an electric conductive pathway along the stacking axis. The charge-segregated mode and fascinating properties were derived from the reduced electrostatic repulsion between adjacent π-electronic cations via dipole-dipole interactions.
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Affiliation(s)
- Kazuhisa Yamasumi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Kentaro Ueda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Yusuke Hattori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Masayuki Suda
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, 223-8522, Japan
| | - Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, 223-8522, Japan
| | - Ryoya Ikemura
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Higashi, Osaka, 577-8502, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Higashi, Osaka, 577-8502, Japan
| | - Yukihide Ishibashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Matsuyama, 790-8577, Japan
| | - Tsuyoshi Asahi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Matsuyama, 790-8577, Japan
| | - Kazuto Nakamura
- Yokkaichi Research Center, JSR Corporation, Yokkaichi, 510-8552, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
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Yamasumi K, Ueda K, Haketa Y, Hattori Y, Suda M, Seki S, Sakai H, Hasobe T, Ikemura R, Imai Y, Ishibashi Y, Asahi T, Nakamura K, Maeda H. Charge‐Segregated Stacking Structure with Anisotropic Electric Conductivity in NIR‐Absorbing and Emitting Positively Charged π‐Electronic Systems. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202216013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Kazuhisa Yamasumi
- Ritsumeikan University: Ritsumeikan Daigaku Department of Applied Chemistry, College of Life Sciences JAPAN
| | - Kentaro Ueda
- Ritsumeikan University: Ritsumeikan Daigaku Department of Applied Chemistry, College of Life Sciences JAPAN
| | - Yohei Haketa
- Ritsumeikan University: Ritsumeikan Daigaku Department of Applied Chemistry, College of Life Sciences JAPAN
| | - Yusuke Hattori
- Kyoto University: Kyoto Daigaku Department of Molecular Engineering, Graduate School of Engineering JAPAN
| | - Masayuki Suda
- Kyoto University: Kyoto Daigaku Department of Molecular Engineering, Graduate School of Engineering JAPAN
| | - Shu Seki
- Kyoto University: Kyoto Daigaku Department of Molecular Engineering, Graduate School of Engineering JAPAN
| | - Hayato Sakai
- Keio University: Keio Gijuku Daigaku Department of Chemistry, Faculty of Science and Engineering JAPAN
| | - Taku Hasobe
- Keio University: Keio Gijuku Daigaku Department of Chemistry, Faculty of Science and Technology JAPAN
| | - Ryoya Ikemura
- Kindai University: Kinki Daigaku Department of Applied Chemistry, Faculty of Science and Engineering JAPAN
| | - Yoshitane Imai
- Kindai University: Kinki Daigaku Department of Applied Chemistry, Faculty of Science and Engineeing JAPAN
| | - Yukihide Ishibashi
- Ehime University Department of Materials Science and Biotechnology, Graduate School of Science and Engineering JAPAN
| | - Tsuyoshi Asahi
- Ehime University Department of Materials Science and Biotechnology, Graduate School of Science and Engineering JAPAN
| | | | - Hiromitsu Maeda
- Ritsumeikan University Department of Applied Chemistry, College of Life Sciences 1-1-1 Nojihigashi 525-8577 Kusatsu JAPAN
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Iwata H, Ogino H, Hattori Y, Nakajima K, Nomura K, Oguri M, Hayashi K, Toshito T, Sasaki S, Hashimoto S, Hiwatashi A. Clinical Outcomes of Image-Guided Proton Therapy for Recurrent Hepatocellular Carcinoma after TACE and/or RFA Treatment. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1063] [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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Toyozawa R, Niho S, Goto Y, Takahashi T, Ohashi K, Daga H, Tanaka H, Hattori Y, Morise M, Sakakibara-Konishi J, Kodani M, Ikeda T, Matsumoto S, Yoh K, Nomura S, Goto K. 977P Phase II study of brigatinib in patients with tyrosine kinase inhibitor (TKI)-naïve ROS1-rearranged advanced non-small cell lung cancer (NSCLC): Barossa cohort 1. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1105] [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] Open
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Hattori Y, Matsuda W, Seki S. Solid-Solid Transition of Microcrystalline Oligo(phenylene ethynylene)s: Impact of Crystalline Structure on Optoelectronic Properties. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Aoki H, Hattori Y, Sasaki T, Otsuka M. Comparative study on the real-time monitoring of a fluid bed drying process of extruded granules using near-infrared spectroscopy and audible acoustic emission. Int J Pharm 2022; 619:121689. [PMID: 35331834 DOI: 10.1016/j.ijpharm.2022.121689] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 12/10/2021] [Revised: 03/02/2022] [Accepted: 03/17/2022] [Indexed: 11/18/2022]
Abstract
The process of fluidized bed drying of granules was comparatively evaluated by on-line real-time measurements of granule moisture content (MC) using near-infrared spectroscopy (NIR) and audible acoustic emission (AAE). The extruded granules were prepared by kneading a powder blend containing lactose, starch, crystalline cellulose, and riboflavin, with water. The MC of the granules (while they were dried at 35 °C in a fluidized bed dryer) was monitored simultaneously with NIR and AAE. The prediction accuracy of the NIR and AAE using partial least squares (PLS) was verified by measuring MC of the granules. The best calibration models following NIR and AAE evaluations consisted of five latent variables with correlation coefficients of 1.000 and 0.998 and root mean square error of 0.259 and 0.615, respectively. As a result of external verification, the accuracy of MC analysis by AAE was slightly lower than that of NIR; however, it was still applicable in practice. Furthermore, the end point of fluidized bed drying process was automatically determined using the PLS discriminant analysis. From the above results, it can be concluded that the AAE-mediated granule drying process can be monitored with sufficient accuracy (compared with NIR).
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Affiliation(s)
- Hisayoshi Aoki
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Japan
| | - Yusuke Hattori
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Japan
| | - Tetsuo Sasaki
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Japan; Graduate School of Medical Photonics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Japan.
| | - Makoto Otsuka
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Japan; Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Japan.
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16
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Okazaki F, Hattori Y, Sasaki T, Otsuka M. Mechanochemical Effect on Controlled Drug Release of Konjac Glucomannan Matrix Tablets during Dry Grinding. Gels 2022; 8:gels8030181. [PMID: 35323294 PMCID: PMC8954073 DOI: 10.3390/gels8030181] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/01/2023] Open
Abstract
To design a controlled drug release preparation based on a safe natural material, a Konjac glucomannan (KGM) mixture containing 16.0 w/w% calcium hydroxide (Ca(OH)2) was ground in a planetary ball mill for 0–120 min. The mechanochemical effect on the physicochemical properties of the KGM ground product was investigated by Fourier-transform infrared spectroscopy (FT-IR), powder X-ray spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and drug release testing. The FT-IR spectra of the ground KGM indicated that the deacetylation reaction of KGM was accelerated in the Ca(OH)2-containing sols by mechanochemical energy, and the degree of deacetylation of KGM was dependent on the grinding time. The time required for tablet disintegration of the KGM matrix tablets containing theophylline increased as the grinding time increased; therefore, drug release was sustained. The Higuchi plots of the matrix tablets obtained from KGM ground for 60–120 min exhibited good linearity because they maintained their gel matrix tablet shape during the release test. However, KGM tablets ground for 0–30 min exhibited nonlinear curves, which were caused by tablet disintegration. This suggests that drug release from the KGM matrix tablet can be freely controlled by the degree of mechanochemical treatment.
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Affiliation(s)
- Fuminori Okazaki
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Tokyo, Japan; (F.O.); (Y.H.)
| | - Yusuke Hattori
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Tokyo, Japan; (F.O.); (Y.H.)
| | - Tetsuo Sasaki
- Graduate School of Medical Photonics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Shizuoka, Japan;
| | - Makoto Otsuka
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Tokyo, Japan; (F.O.); (Y.H.)
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Shizuoka, Japan
- Correspondence: ; Tel./Fax: +81-053-478-3264
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Kobayashi M, Hattori Y, Sasaki T, Otsuka M. Near-infrared spectroscopy-based nondestructive at-line analysis of physicochemical properties of atorvastatin calcium hydrate after grinding. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Nakasuka K, Ishibashi K, Hattori Y, Mori K, Nakajima K, Nagayama T, Kamakura T, Wada M, Inoue Y, Miyamoto K, Nagase S, Noda T, Aiba T, Takaya Y, Isobe M, Terasaki F, Ohte N, Kusano K. Sex-related differences in the prognosis of patients with cardiac sarcoidosis treated with cardiac resynchronization therapy. Heart Rhythm 2022; 19:1133-1140. [DOI: 10.1016/j.hrthm.2022.02.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/19/2022] [Accepted: 02/25/2022] [Indexed: 11/04/2022]
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Kumar S, Yoshida K, Hattori Y, Higashino T, Imahori H, Seki S. Facile synthesis of an ambient stable pyreno[4,5- b]pyrrole monoanion and pyreno[4,5- b:9,10- b']dipyrrole dianion: from serendipity to design. Chem Sci 2022; 13:1594-1599. [PMID: 35282625 PMCID: PMC8826763 DOI: 10.1039/d1sc06070h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/04/2022] [Indexed: 12/02/2022] Open
Abstract
The stability of singly or multiply negatively charged π-conjugated organic compounds is greatly influenced by their electronic delocalization. Herein, we report a strategic methodology for isolation of a mysterious compound. The isolated compounds, a pyreno[4,5-b]pyrrole monoanion and pyreno[4,5-b:9,10-b′]dipyrrole dianion, were highly stable under ambient conditions due to high delocalization of the negative charge over multiple electron deficient C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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N groups and pyrene π-scaffolds and allowed purification by column chromatography. To our knowledge, this is the first report on TCNE type reductive condensation of malononitrile involving pyrene di- and tetraone and formation of pyrenopyrrole. All compounds were characterized by spectroscopic methods and X-ray crystallography. A UV-vis spectroscopic study shows an intense low energy absorption band with a large absorption coefficient (ε). An ambient stable pyreno[4,5-b]pyrrole monoanion and pyreno[4,5-b:9,10-b′]dipyrrole dianion have been isolated and characterized, showing a low energy intense absorption band with the absorption coefficient reaching 7.1 × 104 dm3 mol−1 cm−1.![]()
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Affiliation(s)
- Sharvan Kumar
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Kohshi Yoshida
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Yusuke Hattori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Tomohiro Higashino
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Hiroshi Imahori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan .,Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University Sakyo-ku Kyoto 606-8501 Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
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Otsuka M, Funakubo F, Suzuki T, Hattori Y, Tsutsui K, Adachi N, Sasaki T. Real-time monitoring of tablet surface temperature during high-speed tableting by infrared thermal imaging. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.102736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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21
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Kusano K, Ishibashi K, Noda T, Nakajima K, Nakasuka K, Terasaki S, Hattori Y, Nagayama T, Mori K, Takaya Y, Miyamoto K, Nagase S, Aiba T, Yasuda S, Kitakaze M, Kamakura S, Yazaki Y, Morimoto SI, Isobe M, Terasaki F. Prognosis and Outcomes of Clinically Diagnosed Cardiac Sarcoidosis Without Positive Endomyocardial Biopsy Findings. JACC: Asia 2021; 1:385-395. [PMID: 36341209 PMCID: PMC9627866 DOI: 10.1016/j.jacasi.2021.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/30/2021] [Accepted: 09/29/2021] [Indexed: 11/24/2022]
Abstract
Background Diagnosis of cardiac sarcoidosis (CS) is sometimes difficult due to a low positive rate of epithelioid granulomas by endomyocardial biopsy (EMB). Accordingly, Japanese guidelines can allow the CS diagnosis using clinical data alone without EMB results (clinical CS) since 2006. However, little is known about prognosis and outcome of clinical CS. Objectives Purpose of this study was to analyze the prognosis, outcomes, and response to corticosteroid of clinical CS using large-scale cohort survey. Methods Overall, 422 CS patients (mean age 60 ± 13 years, 68% female, median follow-up period of 5 years), including 345 clinical CS and 77 EMB-positive patients, histologically diagnosed CS (histological CS) by Japanese guidelines, were enrolled and examined. Results Clinical profile (age, sex, initial cardiac arrhythmias, and abnormal uptake of gallium-67 scintigraphy or 18F-fluorodeoxyglucose positron emission tomography in heart) was similar in both groups. Although clinical CS had better prognosis (P = 0.018) and outcome (all-cause death, appropriate defibrillator therapy, and heart transplantation; P = 0.008), multivariate Cox hazard analysis revealed that left ventricular ejection fraction (LVEF) and sustained ventricular tachycardia history were independently associated with outcome (P < 0.001 and P = 0.002, respectively), but not with the diagnosed CS category. Moreover, similar LVEF recovery after corticosteroid was observed in both groups with low LVEF (≤35%) at the 1-year follow-up period (P < 0.001). Conclusions In clinical CS according to the Japanese guideline, prophylactic implantable-cardioverter-defibrillator and immunosuppressive therapy are important in patients with low LVEF or ventricular tachycardia history, similar to histological CS.
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Kobayashi M, Hattori Y, Sasaki T, Nishizawa JI, Otsuka M. Characteristic evaluation of the pseudo-polymorphism of amorphous atorvastatin calcium hydrates by terahertz spectroscopy. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hattori Y, Hoshi Y, Ichimura Y, Sugiura Y, Otsuka M. Device-Independent Discrimination of Falsified Amoxicillin Capsules Using Heterogeneous Near-Infrared Spectroscopic Devices for Training and Testing of a Support Vector Machine. Appl Spectrosc 2021; 75:1251-1261. [PMID: 33599512 DOI: 10.1177/0003702821999659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The objective of this work is to demonstrate the potential of near-infrared spectroscopy for common screening of falsified medicines in the field by means of a device-independent universal discrimination approach. In order to provide a useful discrimination tool to protect people from low-quality medical products, not only is a low-cost and portable screening device necessary, but a reference library is also essential. The authors believe that a device-dependent reference library inhibits near-infrared spectroscopy from becoming a popular screening tool. In this study, to develop a device-independent method, discrimination performance is evaluated using different devices for training and testing. The training data sets for the reference library were prepared using a bench-top Fourier transform near-infrared spectrophotometer, and predictive discrimination was performed using the spectral data by a low-cost and portable wavelength dispersive near-infrared spectrophotometer. A near-infrared spectrum-based support vector machine was used for these purposes, but the screening resulted in low accuracy thought to be caused by the intrinsically device-dependent features of the spectra data. Thus, principal component analysis was performed to collect the proper components to discriminate low-quality products from standard products. The principal component score-based support vector machine was able to produce highly accurate results, identifying falsified products with no false positive cases.
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Affiliation(s)
- Yusuke Hattori
- Research Institute of Pharmaceutical Sciences, 13214Musashino University, Tokyo, Japan
| | - Yuka Hoshi
- Faculty of Engineering, 13214Musashino University, Tokyo, Japan
| | - Yasunori Ichimura
- Bureau of International Health Cooperation, 13805National Center for Global Health and Medicine, Tokyo, Japan
| | - Yasuo Sugiura
- Bureau of International Health Cooperation, 13805National Center for Global Health and Medicine, Tokyo, Japan
| | - Makoto Otsuka
- Research Institute of Pharmaceutical Sciences, 13214Musashino University, Tokyo, Japan
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Tanaka R, Ishihara S, Sasaki T, Hattori Y, Otsuka M. Injection-Molded Coamorphous Tablets: Analysis of Intermolecular Interaction and Crystallization Propensity. J Pharm Sci 2021; 110:3289-3297. [PMID: 34147517 DOI: 10.1016/j.xphs.2021.05.020] [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] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/28/2021] [Accepted: 05/29/2021] [Indexed: 11/26/2022]
Abstract
The processing steps involved in converting from a powder to a tablet entail numerous operations in a which the coamorphous system is recrystallized and dissociated easily. This research focused on (i) a single-step preparation of a coamorphous tablet during injection molding (IM) from the bulk powder, and (ii) a mechanistic characterization of the coamorphous formulation. We selected several organic acids [citric acid, succinic acid, tartaric acid, and malic acid] in an effort to compound with basic loratadine (a poorly water-soluble drug). Loratadine-acids coamorphous tablets were produced via an IM process, and the dissolution was more enhanced than in the pure loratadine amorphous. The interaction was analyzed by FT-IR and terahertz spectroscopies. Each tablet was stored at 40 °C/75%RH, and then XRD patterns were acquired at the desired timepoints. In summary, loratadine exhibited ionic interaction with each acid, and the physical stability of the coamorphous tablet was in proportion to the loratadine-acids interaction strength. Terahertz spectra detected the molecular mobility, which plays an important role in the crystallization propensity of a coamorphous system. This understanding offers a framework for robust coamorphous tablet formulation using the IM methodology.
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Affiliation(s)
- Ryoma Tanaka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan
| | - Sae Ishihara
- Graduate School of Medical Photonics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - Tetsuo Sasaki
- Graduate School of Medical Photonics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan; Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
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Tanaka R, Osotprasit S, Peerapattana J, Ashizawa K, Hattori Y, Otsuka M. Complete Cocrystal Formation during Resonant Acoustic Wet Granulation: Effect of Granulation Liquids. Pharmaceutics 2021; 13:pharmaceutics13010056. [PMID: 33406659 PMCID: PMC7823328 DOI: 10.3390/pharmaceutics13010056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 11/30/2022] Open
Abstract
The manufacturing of solid pharmaceutical dosage forms composed of cocrystals requires numerous processes during which there is risk of dissociation into parent molecules. Resonant acoustic wet granulation (RAG) was devised in an effort to complete theophylline–citric acid (THPCIT) cocrystal formation during the granulation process, thereby reducing the number of operations. In addition, the influence of granulation liquid was investigated. A mixture of anhydrous THP (drug), anhydrous CIT (coformer), and hydroxypropyl cellulose (granulating agent) was processed by RAG with water or ethanol as a granulation liquid. The purposes were to (i) form granules using RAG as a breakthrough method; (ii) accomplish the cocrystallization during the integrated unit operation; and (iii) characterize the final solid product (i.e., tablet). The RAG procedure achieved complete cocrystal formation (>99%) and adequately sized granules (d50: >250 μm). The granulation using water (GW) facilitated formation of cocrystal hydrate which were then transformed into anhydrous cocrystal after drying, while the granulation using ethanol (GE) resulted in the formation of anhydrous cocrystal before and after drying. The dissolution of the highly dense GW tablet, which was compressed from granules including fine powder due to the dehydration, was slower than that of the GE tablet.
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Affiliation(s)
- Ryoma Tanaka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; (R.T.); (Y.H.)
| | - Supisara Osotprasit
- Center for Research and Development of Herbal Health Products, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand; (S.O.); (J.P.)
| | - Jomjai Peerapattana
- Center for Research and Development of Herbal Health Products, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand; (S.O.); (J.P.)
| | - Kazuhide Ashizawa
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan;
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; (R.T.); (Y.H.)
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan;
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; (R.T.); (Y.H.)
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan;
- Correspondence: ; Tel./Fax: +81-42-468-8658
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Iwata H, Ogino H, Hattori Y, Nakajima K, Nomura K, Hayashi K, Toshito T, Sasaki S, Hashimoto S, Mizoe J, Shibamoto Y. Image-guided Proton Therapy for Elderly Patients with Hepatocellular Carcinoma: High Local Control and Quality of Life. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nakajima K, Iwata H, Hattori Y, Hashimoto S, Nomura K, Hayashi K, Toshito T, Baba F, Mizoe J, Ogino H, Shibamoto Y. The 3-Year Patient-Reported Outcomes of Moderate Hypofractionation (3 GyE Per Fraction) and Conventional Fractionation (2 GyE Per Fraction) Proton Therapy for Localized Prostate Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hashimoto S, Ogino H, Iwata H, Hattori Y, Nakajima K, Yamamori E, Hara M, Nakamae K, Akita K, Mizoe J, Shibamoto Y. Outcomes of Proton Beam Therapy for Lung Cancer in Patients with Interstitial Pneumonia. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Omata R, Hattori Y, Sasaki T, Sakamoto T, Otsuka M. Elucidation of the Molecular Mechanism of Wet Granulation for Pharmaceutical Standard Formulations in a High-Speed Shear Mixer Using Near-Infrared Spectroscopy. Pharmaceuticals (Basel) 2020; 13:ph13090226. [PMID: 32878226 PMCID: PMC7559106 DOI: 10.3390/ph13090226] [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: 07/30/2020] [Revised: 08/25/2020] [Accepted: 08/28/2020] [Indexed: 11/16/2022] Open
Abstract
The granulation process of pharmaceutical standard formulation in a high-speed shear wet granulation (HSWG) was measured by in-line near-infrared spectroscopy (NIRS) and agitation power consumption (APC) methods. The F-1, F-2, and F-3 formulations (500 g) contained 96% w/w α-lactose monohydrate (LA), potato starch (PS), and a LA:PS = 7:3 mixture, respectively, and all the formulations contained 4% w/w hydroxypropyl cellulose. While adding purified water at 10 mL/min, the sample powder was mixed. The calibration models to measure the amount of binding water (Wa) and APC of the HSWG formulations were established based on NIRS of the samples measured for 60 min by partial least-squares regression analysis (PLS). Molecular interaction related to APC between the particle surface and binding liquor was analyzed based on NIRS. The predicted values of Wa and APC for all formulations were superimposed with the measured values on a straight line, respectively. The regression vector (RV) of the calibration model for Wa indicated the chemical information of all the water in the samples. In contrast, the RV for APC suggested that APC changes in the processes are related to powder aggregation because of surface tension of binding water between particles.
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Affiliation(s)
- Ryo Omata
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo, Tokyo 202-8585, Japan; (R.O.); (Y.H.)
| | - Yusuke Hattori
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo, Tokyo 202-8585, Japan; (R.O.); (Y.H.)
| | - Tetsuo Sasaki
- Graduate School of Medical Photonics, Shizuoka University, 3-5-1 Jyohoku, Naka-ku, Hamamatsu 432-8561, Shizuoka, Japan;
| | - Tomoaki Sakamoto
- Division of Drugs, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki City 210-9501, Kanagawa, Japan;
| | - Makoto Otsuka
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo, Tokyo 202-8585, Japan; (R.O.); (Y.H.)
- Correspondence: ; Tel.: +81-42-468-8658
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Hattori Y, Kubota S, Otsuka M. Pharmaceutical evaluation of matrix tablets prepared using a fused deposition modelling type three-dimensional printer – Effect of geometrical internal microstructural factors on drug release from enteric-polymer tablets containing rebamipide. J Pharm Pharmacol 2020; 72:787-797. [DOI: 10.1111/jphp.13261] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 12/04/2018] [Accepted: 12/07/2018] [Indexed: 11/28/2022]
Abstract
Abstract
Objectives
Three-dimensional (3-D) printers are widely expected to provide a novel manufacturing method in the future to make personalized medicines in hospitals.
Methods
Functional filament containing 5–20% drug was prepared with rebamipide (REB; a poorly water-soluble model drug) and hypromellose phthalate (HPMCP; enteric base) at 130–170°C using a biaxial kneading extruder. Several tablet models with various internal structures were designed using computer-aided design. REB-containing 3-D tablets were prepared based on these designs from filament using a fused deposition modelling type 3-D printer.
Key findings
Physicochemical characteristics of the filament and 3-D tablets were measured by powder X-ray diffraction and differential scanning calorimetry. The results suggested that a part of the crystalline REB dispersed into the HPMCP and transformed into an amorphous form, because crystalline REB was kneaded with melted HPMCP at 130–170°C during the preparation processes of filament and 3-D tablets. The drug-release properties of 3-D tablets were tested in both pH 1.2 and 6.8 buffers. REB was not released from the 3-D tablets at pH 1.2, but HPMCP dissolved at pH 6.8, and then REB was rapidly released from the tablet.
Conclusions
The dissolution of 3-D tablets in the small intestine could be controlled by the tablet geometrical structure.
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Affiliation(s)
- Yusuke Hattori
- Research Institute of Pharmaceutical Sciences, Nishi-Tokyo, Japan
- Faculty of Pharmacy, Musashino University, Nishi-Tokyo, Japan
| | - Shiho Kubota
- Faculty of Pharmacy, Musashino University, Nishi-Tokyo, Japan
| | - Makoto Otsuka
- Research Institute of Pharmaceutical Sciences, Nishi-Tokyo, Japan
- Faculty of Pharmacy, Musashino University, Nishi-Tokyo, Japan
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Kageyama S, Mitake H, Nakajima A, Kodama K, Hattori Y, Watanabe Y, Sugiyama H, Kawahito M, Takeuchi R, Murata K, Nawada R, Onodera T. A novel risk score on admission for predicting death or need for surgery in patients with acute type A intramural hematoma receiving medical therapy. Heart Vessels 2020; 35:1164-1170. [PMID: 32185495 DOI: 10.1007/s00380-020-01583-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/06/2020] [Indexed: 01/16/2023]
Abstract
There has been continuing discussion regarding the treatment strategy for acute type A intramural hematoma (IMH). Most patients are treated conservatively in Japan; hence, predicting fatal events and stratifying risks based on results normally obtained on hospital arrival are important. We aimed to examine the incidences and risk factors of death or need for surgery for acute type A IMH in patients receiving medical treatment and to identify high-risk patients using clinical findings on hospital arrival. From 2011 to 2016, 57 consecutive patients (mean age 72.5 years; male 36.8%) diagnosed with acute type A IMH who were receiving treatment at Shizuoka City Shizuoka Hospital were retrospectively included. Primary endpoint was a composite of cardiovascular death and operation within 1 year after onset. To evaluate sensitivity and specificity of the risk factors and risk score, we estimated the area under the receiver operating characteristic (ROC) curve. Mean follow-up duration was 621 days. Mean systolic blood pressure (SBP) was 129 mmHg. Computed tomography (CT) on arrival showed a mean ascending aorta diameter of 46 mm. Ulcer-like projection (ULP) in the ascending aorta and pericardial effusion (PE) were seen in 33% and 42% of cases, respectively. Twenty-eight patients (49.1%) reached the primary endpoint (cardiovascular death, 7 cases [12.3%]; operation, 21 cases [36.8%]). In univariate analysis of admission values, the primary endpoint group had significantly lower SBP (113.0 ± 28.5 vs 144.3 ± 33.5 mmHg), higher ascending aorta diameter (49.5 ± 8.1 vs 43.6 ± 5.9 mm), and higher frequency of ULP (53.8% vs 13.8%) and PE (58.6% vs 25.0%) than the event-free group. Multivariate analysis showed that ULP on admission CT was a significant predictor of the primary endpoint. The risk score was considered using these risk factors. On admission, the primary endpoint could be predicted with 89.7% sensitivity and 75% specificity (area under the ROC curve 0.823) if the patient had ULP and/or > 2 of the following factors: SBP < 120 mmHg, ascending aorta diameter > 45 mm, and PE. SBP and CT findings on arrival were significantly associated with cardiovascular death and the need for surgery in patients with acute type A IMH receiving initial medical therapy. The novel risk score was useful for predicting cardiovascular death and surgery.
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Affiliation(s)
- Shigetaka Kageyama
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan.
| | - Hirotsugu Mitake
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Atsuo Nakajima
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Keita Kodama
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Yusuke Hattori
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Yuzo Watanabe
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Hirofumi Sugiyama
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Michitomo Kawahito
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Ryosuke Takeuchi
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Koichiro Murata
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Ryuzo Nawada
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
| | - Tomoya Onodera
- Department of Cardiology, Shizuoka City Hospital, 10-93, Otemachi, Aoi-ku, Shizuoka, 420-8630, Japan
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Tanaka R, Hattori Y, Otsuka M, Ashizawa K. Application of spray freeze drying to theophylline-oxalic acid cocrystal engineering for inhaled dry powder technology. Drug Dev Ind Pharm 2020; 46:179-187. [PMID: 31937148 DOI: 10.1080/03639045.2020.1716367] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Spray freeze drying (SFD) produces suitable particles for the pharmaceutical formulation of dry powders used in dry powder inhalers (DPIs). However, SFD particles have large specific surface area and are partially made up of amorphous solids; this state is hygroscopic and would lead to changes in physicochemical properties by humidity when the particles are stored over the long-term or under high humidity conditions such as in the lungs. This study focused on the application of SFD with a cocrystal technique which can add humidity resistance to the active pharmaceutical ingredients (APIs), and the investigation of the physicochemical properties under high humidity conditions. Cocrystal samples containing theophylline anhydrate (THA) and oxalic acid (OXA) in a molar ratio of 2:1 were prepared by SFD. The crystalline structure, thermal behavior, solid-state, hygroscopicity, stability, and aerodynamic properties were evaluated. Simultaneous in situ measurement by near-infrared and Raman (NIR-Raman) spectroscopy was performed to analyze the humidification process. The SFD sample had a porous particle and an optimal aerodynamic particle size (3.03 µm) although the geometric particle diameter was 7.20 µm. In addition, the sample formed the THAOXA cocrystal with partial coamorphous. The hydration capacity and pseudopolymorphic transformation rate of the SFD sample were much lower than those of THA under conditions of 96.4% relative humidity and 40.0°C temperature because of the cocrystal formation. The reasons were discussed based on the crystalline structure and energy. The SFD technology for cocrystallization would enable the pharmaceutical preparation of DPI products under environmentally friendly conditions.
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Affiliation(s)
- Ryoma Tanaka
- Graduate School of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
| | - Kazuhide Ashizawa
- Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
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Tanaka R, Duggirala NK, Hattori Y, Otsuka M, Suryanarayanan R. Formation of Indomethacin-Saccharin Cocrystals during Wet Granulation: Role of Polymeric Excipients. Mol Pharm 2019; 17:274-283. [PMID: 31756100 DOI: 10.1021/acs.molpharmaceut.9b01004] [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: 01/08/2023]
Abstract
Formulation of a cocrystal into a solid pharmaceutical dosage form entails numerous processing steps during which there is risk of dissociation. In an effort to reduce the number of unit operations, we have attempted the in situ formation of an indomethacin-saccharin (INDSAC) cocrystal during high-shear wet granulation (HSWG). HSWG of IND (poorly water-soluble drug) and SAC (coformer), with polymers (granulating agents), was carried out using ethanol as the granulation liquid and yielded INDSAC cocrystal granules. Therefore, cocrystal formation and granulation were simultaneously accomplished. Our objectives were to (i) evaluate the influence of polymers on cocrystal formation kinetics during wet granulation and (ii) mechanistically understand the role of polymers in facilitating the cocrystal formation. Polyvinylpyrrolidone (PVP), hydroxypropyl cellulose (HPC), and polyethylene oxide (PEO) were chosen to investigate the influence of soluble polymers. The cocrystal formation kinetics was influenced by the polymer (PVP < HPC < PEO) and its concentration. The interaction of the polymer with cocrystal components inhibited the cocrystal formation. Complete cocrystal formation was observed in the presence of PEO, a polymer which does not interact with IND and SAC.
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Affiliation(s)
- Ryoma Tanaka
- Department of Pharmaceutics, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Naga Kiran Duggirala
- Department of Pharmaceutics, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | | | | | - Raj Suryanarayanan
- Department of Pharmaceutics, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55455 , United States
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Saito S, Hattori Y, Sakamoto T, Otsuka M. Real-time monitoring of pharmaceutical properties of medical tablets during direct tableting process by hybrid tableting process parameter-time profiles. Biomed Mater Eng 2019; 30:509-524. [PMID: 31771033 DOI: 10.3233/bme-191071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Real-time monitoring is required for the pharmaceutical manufacturing process to produce high-quality pharmaceutical products. OBJECTIVE Changes in the critical tableting process parameters of single-punch tableting machine due to variability in the moisture content of the raw powders were monitored by hybrid tableting pressure-time profiles. METHODS After mixing of the raw powders, which consisted of theophylline, anhydrous lactose, potato starch and crystalline cellulose, they were stored at 0%, 45%, or 75% relative humidity (RH) for 24 h, respectively. Continuous tablet productions were carried out using the mixed powder samples at 10%, 45%, or 75% RH, respectively. The critical process parameters, such as upper and lower puncture pressures, die wall pressures, and inter-punch distances were recoded with the tableting machine, and then, tablet hardness (H), weight (W) and disintegration time (DT) of the tablets were measured. RESULTS Hybrid tableting pressure-time profiles were obtained from various critical process parameters, and calibration models to predict pharmaceutical properties were calculated based on the hybrid profiles using a partial-least-squares regression (PLSR) method. In addition, the consistency of the calibration models were verified by constructing robust calibration models. CONCLUSION Informetrical analysis for tablets based on hybrid tableting pressure-time profiles could evaluate the change of tablet properties dependent on the moisture content in the raw powders during the tableting process. The changes of tableting properties and elasticity were caused by agglomeration of powder particles at moisture content.
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Affiliation(s)
- Shuji Saito
- Graduate School of Pharmaceutical Sciences, Musashino University, Nishi-Tokyo, Tokyo, Japan
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, Nishi-Tokyo, Tokyo, Japan
| | - Tomoaki Sakamoto
- Division of Drugs, National Institute of Health Sciences, Kawasaki-ku, Kawasaki City, Kanagawa, Japan
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, Nishi-Tokyo, Tokyo, Japan
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Hattori Y, Nishimura N, Tsutsui Y, Ghosh S, Sakurai T, Sugiyasu K, Takeuchi M, Seki S. Rod-like transition first or chain aggregation first? ordered aggregation of rod-like poly(p-phenyleneethynylene) chains in solution. Chem Commun (Camb) 2019; 55:13342-13345. [PMID: 31626266 DOI: 10.1039/c9cc06892a] [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] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rod-like configuration of conjugated polymer chains with its low energetic disorder is the key to utilizing the backbone as a highly electrically-conductive wire. An energetic disorder that is higher than 0.1 eV, coupled with vibronic modes of the chains, leads to the localization of charges. Herein, we have tracked precisely the rod-like transition of poly(p-phenyleneethynylene) (PPE) chains as a function of temperature in diluted solutions, and shown a steep increase in persistence length at 230 K. The resulting rod-like configuration of the PPE chains with its extended electronic conjugation exhibited an extremely small energetic disorder of ∼70 meV, and was stabilized by subsequent polymer aggregate formation.
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Affiliation(s)
- Yusuke Hattori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Nozomi Nishimura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Samrat Ghosh
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Tsuneaki Sakurai
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
| | - Kazunori Sugiyasu
- Molecular Design & Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Masayuki Takeuchi
- Molecular Design & Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
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Ishihara S, Hattori Y, Otsuka M. MCR-ALS analysis of IR spectroscopy and XRD for the investigation of ibuprofen - nicotinamide cocrystal formation. Spectrochim Acta A Mol Biomol Spectrosc 2019; 221:117142. [PMID: 31158774 DOI: 10.1016/j.saa.2019.117142] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/07/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
To improve aqueous solubility, a poorly water-soluble active ingredient is classically combined with a conformer to form cocrystals. Hot melt extrusion is one preparation method for the formation of cocrystal solids. The aim of our study was to determine the optimal temperature conditions for the formation of ibuprofen and nicotinamide cocrystals using real-time infrared (IR) and X-ray diffraction (XRD) measurements. IR spectra and XRD patterns were subjected to multivariate curve resolution alternating least squares (MCR-ALS) analysis and decomposed into several components. Each component was descriptive of a specific step in the formation of the cocrystal. Cocrystal formation was followed by a separation phase between amorphous ibuprofen and crystalline nicotinamide. Our results suggest that, when using the hot melt exclusion method, careful consideration should be made towards optimizing processing temperatures in order to prevent amorphization and promote control over the process of cocrystal formation.
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Affiliation(s)
- Sae Ishihara
- Faculty of Pharmacy, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo city, Tokyo 202-8585, Japan
| | - Yusuke Hattori
- Faculty of Pharmacy, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo city, Tokyo 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo City, Tokyo 202-8585, Japan
| | - Makoto Otsuka
- Faculty of Pharmacy, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo city, Tokyo 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo City, Tokyo 202-8585, Japan.
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Shimokawa Y, Hayakawa E, Takahashi K, Okai K, Hattori Y, Otsuka M. Pharmaceutical formulation analysis of a gelatin-based soft capsule film sheet containing phytic acid using near-infrared spectroscopy. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101126] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nakajima K, Iwata H, Hattori Y, Hashimoto S, Hayashi K, Toshito T, Baba F, Sasaki S, Mizoe J, Ogino H, Shibamoto Y. Image-guided Proton Therapy (IGPT) for Oligometastatic Liver Tumors from Gastric/Colorectal Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sakai R, Ohmachi K, Sano F, Watanabe R, Takahashi H, Takasaki H, Tanaka M, Hattori Y, Kimura H, Takimoto M, Tachibana T, Tanaka E, Ishii Y, Ishiyama Y, Hagihara M, Miyazaki K, Yamamoto K, Tomita N, Ando K. Bendamustine-120 plus rituximab therapy for relapsed or refractory follicular lymphoma: a multicenter phase II study. Ann Hematol 2019; 98:2131-2138. [DOI: 10.1007/s00277-019-03750-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 06/27/2019] [Indexed: 11/30/2022]
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Tanaka R, Hattori Y, Ashizawa K, Otsuka M. Kinetics Study of Cocrystal Formation Between Indomethacin and Saccharin Using High-Shear Granulation With In Situ Raman Spectroscopy. J Pharm Sci 2019; 108:3201-3208. [PMID: 31279736 DOI: 10.1016/j.xphs.2019.06.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 06/06/2019] [Accepted: 06/20/2019] [Indexed: 10/26/2022]
Abstract
Pharmaceutical manufacturing processes are necessary to make solid dosage form even in cocrystal formation. In an effort to reduce the number of unit operations, high-shear wet granulation with cocrystallization system was proposed. In the present study, indomethacin-saccharin was chosen as a model compound, and the cocrystal formation kinetics was investigated during the consistent process. The role of each initial indomethacin crystal state (γ-form, α-form, or amorphous) for the kinetics was explored using in situ Raman spectroscopy with multivariate curve resolution by alternating least-squares analysis as a chemometrics. Obtained granules were characterized by X-ray diffraction and tablet dissolution testing. The Raman peaks assigned to indomethacin-saccharin cocrystal were increased with granulation when ethanol was used as a binding solvent. In addition, the reaction kinetics of run samples which had different indomethacin forms was distinguished by best fitting using Avrami-Erofeev or Ginstling-Brounshtein model. The kinetic variance depended on the initial thermodynamic state of indomethacin because they had a different crystallization mechanism for the cocrystal. The scalable and feasible granulation method is required in the pharmaceutical industry.
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Affiliation(s)
- Ryoma Tanaka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan
| | - Kazuhide Ashizawa
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
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Motomura Y, Hattori Y, Sakurai T, Ghosh S, Seki S. Impact of Unsymmetrical Alkyl–Fluoroalkyl Side Chains over Coil-to-Rod Transition of Soluble Polyacetylenes: Modulation of Electronic Conjugation of Isolated Chains and Their Self-Assembly. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshihiro Motomura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yusuke Hattori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Tsuneaki Sakurai
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Samrat Ghosh
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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Tanaka R, Hattori Y, Horie Y, Kamada H, Nagato T, Otsuka M. Characterization of Amorphous Solid Dispersion of Pharmaceutical Compound with pH-Dependent Solubility Prepared by Continuous-Spray Granulator. Pharmaceutics 2019; 11:pharmaceutics11040159. [PMID: 30987131 PMCID: PMC6523299 DOI: 10.3390/pharmaceutics11040159] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/22/2019] [Accepted: 04/01/2019] [Indexed: 12/31/2022] Open
Abstract
A continuous-spray granulator (CTS-SGR) is a one-step granulation technology capable of using solutions or suspensions. The present research objectives were, (1) to reduce the manufacturing operations for solid dosage formulations, (2) to make amorphous solid dispersion (ASD) granules without pre-preparation of amorphous solids of active pharmaceutical ingredients (API), and (3) to characterize the obtained SGR granules by comprehensive pharmaceutical analysis. Rebamipide (RBM), a biopharmaceutical classification system class IV drug, that has low solubility or permeability in the stomach, was selected as a model compound. Five kind of granules with different concentrations of polyvinylpyrrolidone/vinyl acetate copolymer (PVP-VA) were prepared using a one-step SGR process. All of the SGR granules could be produced in amorphous or ASD form and their thermodynamic stability was very high because of high glass transition temperatures (>178 °C). They were unstable in 20 °C/75%RH; however, their stability was improved according to the proportion of polymer. The carboxy group of RBM was ionized in the granules and interactions appeared between RBM and PVP-VA, with the formation of an ASD confirmed and the solubility was enhanced compared with bulk RBM crystals. The SGR methodology has the possibility of contributing to process development in the pharmaceutical industry.
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Affiliation(s)
- Ryoma Tanaka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
- Faculty of Pharmacy, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
| | - Yukun Horie
- Faculty of Pharmacy, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
| | - Hitoshi Kamada
- Research & Development Department, Technical Division, Powrex Corporation, 5-5-5 Kitagawara, Itami, Hyogo 664-0837, Japan.
| | - Takuya Nagato
- Research & Development Department, Technical Division, Powrex Corporation, 5-5-5 Kitagawara, Itami, Hyogo 664-0837, Japan.
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
- Faculty of Pharmacy, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shin-machi, Nishi-Tokyo, Tokyo 202-8585, Japan.
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Horinouchi H, Nogami N, Saka H, Nishio M, Tokito T, Takahashi T, Kasahara K, Hattori Y, Ichihara E, Adachi N, Sawada T, Shimamoto T, Noguchi K, Pietanza M, Kurata T. Safety and tolerability of pembrolizumab or placebo plus pemetrexed and platinum as first-line therapy in Japanese patients (PTS) with metastatic non-squamous non-small cell lung cancer (NSCLC) enrolled in the phase III KEYNOTE-189 study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz063.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Peerapattana J, Hattori Y, Otsuka M. Simultaneous quantitative analysis of indomethacin and benzoic acid in gel using ultra-violet-visible spectrophotometry and chemometrics. Biomed Mater Eng 2018; 30:73-84. [PMID: 30562890 DOI: 10.3233/bme-181034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND In order to manufacture pharmaceutical products, real-time monitoring in the manufacturing process is necessary, but large equipment cost is required to achieve it. OBJECTIVE The aim of this research is to use ultra-violet-visible spectroscopy along with chemometrics procedure to simultaneously carry out quantitative analysis of indomethacin (IMC) and benzoic acid (BA) in the gel during pharmaceutical manufacturing process. METHODS The gel preparations contained 0.1-1.5% IMC, 0.015-0.225% BA, 2% carbopol® 941 and 95% ethanol solution. The calibration models were constructed using the partial least square regression (PLS). RESULTS The relationships of the measured and predicted concentrations for both IMC and BA had linear plots. The developed PLS calibration models were used to monitor the IMC and BA concentrations during mixing of the gels by the planetary centrifugal and conventional mixers, respectively. IMC and BA were gradually dispersed, dissolved and completely homogeneous within 30 min by the centrifugal mixer. In contrast, IMC and BA were slowly dispersed, dissolved and completely homogeneous at more than 60 min by the conventional mixer. CONCLUSIONS The ultra-violet-visible spectrophotometric method couples with multivariate chemometric techniques for quantitative data analysis were successfully applied for the simultaneous determination of major component IMC and trace component BA in the gel.
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Affiliation(s)
- Jomjai Peerapattana
- Center for Research and Development of Herbal Health Products, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Yusuke Hattori
- Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, Musashino University, Shinmachi, Nishi-Tokyo, Japan
| | - Makoto Otsuka
- Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, Musashino University, Shinmachi, Nishi-Tokyo, Japan
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Shimokawa Y, Hayakawa E, Takahashi K, Okai K, Hattori Y, Otsuka M. Pharmaceutical formulation analysis of gelatin-based soft capsule film sheets using near-infrared spectroscopy. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hashimoto S, Katsurada M, Muramatsu R, Asai K, Shimomura A, Ueki K, Kino H, Yoshida A, Tanaka K, Hayashi K, Kimura M, Kibe Y, Omachi C, Toshito T, Nakajima K, Hattori Y, Iwata H, Mizoe J, Ogino H, Shibamoto Y. Effect of a Device-Free Compressed Shell Fixation Method on Hepatic Respiratory Movement. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Hattori Y, Ota K, Peerapattana J, Otsuka M. Evaluation of swelling processes of various natural polymer matrix tablets by X-ray computed tomography and controlled drug release. Biomed Mater Eng 2018; 29:439-450. [PMID: 30282342 DOI: 10.3233/bme-181001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The swelling properties and the drug-release sustainability of pre-gelatinized starches (𝛼-starch) tablets depend on the polymer characteristics. OBJECTBS In order to clarify the drug release form, the natural polymers (NPs) were investigated. The relationship between drug release and swelling of natural polymers (NPs), the swelling processes of various starch polymers, were investigated using a drug-release test (DRT) and X-ray computed tomography (XCT). NPs consisting of various starches such as glutinous rice starch (GRS), corn starch (CS), and tapioca starch (TS) were used as additives for sustained drug-release tablets. Tablets consisted of 5% theophylline, 94% 𝛼-starch, and 1% magnesium stearate and were compressed at 6 kN. DRTs were measured in distilled water at 37 °C, and the drug concentrations were measured using UV (271 nm). Swelling ratio (R) profiles of the tablets during DRTs were evaluated based on XCT images. RESULTS The order of the drug-release rate constant of the tablets was TS < GRS < CS. XCT images of the tablets were measured during the DRTs, and CS, GRS, and TS tablets swelled and showed increased gel-layers, and then finally disintegrated at 6, 9, and 11 h, respectively. CONCLUSION The relationship between R profile and the % drug release of the tablets differed depending on the kind of NP used.
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Affiliation(s)
- Yusuke Hattori
- Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, Musashino University, Tokyo, Japan
| | - Kazuki Ota
- Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, Musashino University, Tokyo, Japan
| | - Jomjai Peerapattana
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Makoto Otsuka
- Research Institute of Pharmaceutical Sciences, Faculty of Pharmacy, Musashino University, Tokyo, Japan
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48
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Iwaki K, sakai T, Hatayama D, Hayashi Y, Inoue N, Mitsumoto M, Hattori Y, Goto T, Sairyo K, Tsuji S. Physical features of pediatric patients with lumbar spondylolysis and effectiveness of rehabilitation. J Med Invest 2018; 65:177-183. [PMID: 30282857 DOI: 10.2152/jmi.65.177] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The purpose of this study was to evaluate the physical features of pediatric patients with lumbar spondylolysis (LS), factors that increase the load during compensatory movements at the lumbar spine, and the outcomes of rehabilitation. Twenty patients were included. Fifteen items were used:fingertip-to-floor distance (FFD), straight leg raising (SLR), heel-to-buttock distance (HBD), tightness of the rectus femoris, the lateral and medial rotator muscles, iliopsoas, tensor fascia lata, adductor muscles, soleus muscle, and latissimus dorsi, and trunk rotation, sit-ups and endurance of the abdominal and back muscles. Initial findings were judged as positive or negative using previously reported cut-off values and were re-evaluated 2 or 3 months later. Positive tests were found for HBD and tightness of the rectus femoris in 85% of the patients, for endurance of the abdominal muscles in 75%, SLR and sit-ups in 70%, and FFD and tightness of the external rotator muscles in 60%. The physical features varied according to the type of sport played, and some patients were refractory to rehabilitation. Only 17.6%, 33.3%, and 40.0% of patients with initially positive findings for HBD, tightness of the external rotator muscles, and endurance of the abdominal muscles, respectively, achieved improvements after rehabilitation. J. Med. Invest. 65:177-183, August, 2018.
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Affiliation(s)
- Koichi Iwaki
- Department of Rehabilitation, Tsuji Hideki Orthopedics
| | - Toshinori sakai
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | - Yohei Hayashi
- Department of Rehabilitation, Tsuji Hideki Orthopedics
| | - Nanae Inoue
- Department of Rehabilitation, Tsuji Hideki Orthopedics
| | | | | | - Tsuyoshi Goto
- Department of Rehabilitation, Tokushima University Hospital
| | - Koichi Sairyo
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School
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Hattori Y, Sugata M, Kamata H, Nagata M, Nagato T, Hasegawa K, Otsuka M. Real-time monitoring of the tablet-coating process by near-infrared spectroscopy - Effects of coating polymer concentrations on pharmaceutical properties of tablets. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.04.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ohtaka M, Kawahara T, Takamoto D, Mochizuki T, Ishida H, Hattori Y, Makiyama K, Yao M, Teranishi JI, Uemura H. Neutrophil-to-Lymphocyte Ratio in Renal Transplant Patients. EXP CLIN TRANSPLANT 2018; 16:546-549. [PMID: 29911963 DOI: 10.6002/ect.2017.0098] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Because of recent developments in immunosuppressive therapy, renal transplant outcomes have improved. Although reports on the association between immunosuppressive therapy and malignant disease are available, the results are controversial. The neutrophil-to-lymphocyte ratio has been reported as an easy tumor marker for predicting the prognoses of some solid tumors. In the present study, we examined changes in neutrophil-to-lymphocyte ratio after renal transplant and discussed cases in which malignant disease developed after renal transplant. MATERIALS AND METHODS Our study included 137 patients who underwent renal transplant between August 2001 and September 2015. Four of these patients (2.9%) developed malignant disease. The neutrophil-to-lymphocyte ratio was calculated based on the numbers of neutrophils and lymphocytes in the complete blood count and evaluated before and at 1, 3, 6, and 12 months and at 3 years after renal transplant. RESULTS The neutrophil-to-lymphocyte ratio was markedly high at 1 week and 1 month after renal transplant and gradually decreased until it became stable at 3 months posttransplant. In patients with malignant disease, there was a gradual increase in the neutrophil-to-Iymphocyte ratio after renal transplant. CONCLUSIONS We observed dramatic differences in the neutrophil-to-lymphocyte ratio at 1 and 3 months after renal transplant. The neutrophil-to-lymphocyte ratio of patients with malignant disease after renal transplant continued to increase.
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Affiliation(s)
- Mari Ohtaka
- From the Department of Urology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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