1.A Case of Primary Racemose Hemangioma Discovered from Abnormal Chest X-ray Finding
Ken TOMOOKA ; Makoto NAKAO ; Seiji KAMEI ; Yuto SUZUKI ; Yusuke SAKAI ; Sousuke ARAKAWA ; Yusuke KAGAWA ; Ryota KUROKAWA ; Hidefumi SATO ; Yoshimi HORIKAWA ; Hideki MURAMATSU
Journal of the Japanese Association of Rural Medicine 2017;66(1):79-85
A 56-year-old woman was referred to our hospital because of an abnormal finding in the right pulmonary hilum on chest X-ray. Enhanced chest computed tomography showed hyperplastic bronchial arteries dilating and winding around the trachea and bronchi. A racemose hemangioma of the bronchial artery with multiple bronchial artery aneurysms (diameter <20mm) was seen displacing the trachea and both main bronchi. Bronchoscopy showed submucosal tumor-like lesions at the distal trachea and in both main bronchi, and a dusky-red elevated pulsatile lesion at the orifice of the left B3b+c. We performed coil embolization of the bronchial artery aneurysm to prevent abrupt rupture of the bronchial aneurysm.
2.A case of wild-type transthyretin amyloidosis associated with organizing pneumonia
Makoto Nakao ; Hideki Muramatsu ; Eriko Yamamoto ; Yuto Suzuki ; Sousuke Arakawa ; Ken Tomooka ; Yusuke Sakai ; Kouhei Fujita ; Hidefumi Sato
Journal of Rural Medicine 2017;12(2):130-134
An 81-year-old man was referred to our hospital with bilateral multiple patchy opacities on chest radiography. His chief complaints were a few months’ history of intermittent mild cough and slightly yellow sputum. Chest computed tomography (CT) showed non-segmental air-space consolidations with ground-glass opacities. Amyloid deposition with organizing pneumonia (OP) was seen in transbronchial lung biopsy (TBLB) specimens from the left S8. Three months later, the infiltration originally seen in the left lower lobe was remarkably diminished, and new infiltrations in the lingual and right lower lobes were detected on chest CT. Amyloid deposition with OP was seen in TBLB specimens from the left S4. Transthyretin was detected following immunohistochemical examination. The presence of wild-type transthyretin (ATTRwt) was proven using genetic analysis. The present report describes a rare case of ATTRwt amyloidosis associated with OP.
3.Analysis of medical records and prescription data from long-term disaster medical support following the subacute phase of the Great East Japan Earthquake on March 11, 2011
Yusuke Shiba ; Ryota Sakai ; Ryota Watano ; Yasunari Okuda ; Hiroumi Wakabayashi ; Masashi Arakawa ; Tomohito Nakazawa ; Toshiaki Sudo ; Hideharu Kajii ; Tsuyoshi Hasegawa ; Masanobu Okayama
An Official Journal of the Japan Primary Care Association 2013;36(1):23-26
Abstract
Introduction : There are few reports of long-term medical support activities in disaster areas. We analyzed drug-related data using medical records and prescriptions obtained during the long-term medical support of patients impacted by the Great East Japan Earthquake, which occurred on March 11, 2011.
Methods : Using medical records and prescriptions, the dispensing frequency of each drug was calculated and usage trends of the top three most frequently dispensed drugs are described here. All data was collected from March 26, 2011 onwards after the medical support activity commenced.
Results : In the first week of data acquisition, a total of 166 patients visited the medical support team (median 48.5, range 14-166). Following that, the number of patients decreased with a median of 24 people per day (range 0-47). The number of prescriptions for common cold medication was the highest, followed by antihypertensive and anti-allergic medications, respectively. The usage of antihypertensive drugs and common cold medications decreased over time, whereas anti-allergic medications were prescribed on a continuous basis.
Conclusion : Disaster medical support teams should not only be prepared to support the acute phase but also long-term phase, which depends heavily on the restoration of local medical services. The earlier the intervention to provide support, the greater the likelihood that the disaster medical support team will require to provide treatment for both acute and chronic illness.
4.Fabrication of Functional Cell Sheets with Human Thyrocytes from Non-Tumorous Thyroid Tissue
Yu HUANG ; Kosho YAMANOUCHI ; Yusuke SAKAI ; Sayaka KUBA ; Chika SAKIMURA ; Michi MORITA ; Kengo KANETAKA ; Mitsuhisa TAKATSUKI ; Susumu EGUCHI
Tissue Engineering and Regenerative Medicine 2019;16(5):491-499
BACKGROUND: Engineered cell sheet transplantation has been considered an alternative physiological therapy for endocrine disorders. In this study, we attempted to fabricate functional human thyroid cell sheets using the engineering technology by culturing primary thyrocytes in free-feeder monolayers and assessed their proliferation and function in two different media. METHODS: The non-tumorous tissues (approximately 2 g) were dissected during surgery. Primary human thyroid cells were isolated by mechanical dispersion and treatment with isolation solution. The cells were cultured on tissue culture dishes or temperature-responsive culture dishes to induce the formation of detached cell sheets. RESULTS: Primary thyroid cells isolated from nine patients were positive for thyroid transcription factor 1, thyroglobulin (TG) and cytokeratin 7. Cell sheets with follicles were fabricated by cells incubated in both Dulbecco's Modified Eagle Medium (DMEM) and hepatocyte-defined medium (HDM) culture medium. The diameter and thickness of sheets fabricated in HDM were larger and thicker than those fabricated from DMEM. Furthermore, the cells incubated in HDM secreted higher levels of fT3 and fT4 than those incubated in DMEM. The thyroid peroxidase and TG mRNA of cells maintained in HDM were higher than those in cells maintained in DMEM. CONCLUSION: HDM appears suitable as a culture medium for maintaining primary thyrocytes and fabricating functional cell sheets. These in vitro findings may contribute to the development of appropriate culture conditions for human thyrocytes as well as engineered functional cell sheets.
Eagles
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Humans
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In Vitro Techniques
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Iodide Peroxidase
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Keratin-7
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RNA, Messenger
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Thyroglobulin
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Thyroid Gland
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Transcription Factors
5.6. Postgraduate Training and CME : Nijiiro Doctors Initiative
Eriko YOSHIDA ; Yusuke KANAKUBO ; Nozomi KUBOTA ; Yuki SAKAI ; Hiromitsu YAMASHITA
Medical Education 2023;54(1):35-40
Nijiiro Doctors offered a six-month LGBTQ healthcare training course for physicians in their third year of post-graduate studies or above, with the goal of implementing practice at their institutions. In addition to lectures, the course included dialogues with LGBTQ individuals, role-plays in which the LGBTQ individuals played the role of mock patients and reviews in small groups in each session.
6.Patient-specific mechanical analysis of pedicle screw insertion in simulated osteoporotic spinal bone models derived from medical images
Norihiro NISHIDA ; Hidenori SUZUKI ; Hanvey TETSU ; Yuki MORISHITA ; Yogesh KUMARAN ; Fei JIANG ; Masahiro FUNABA ; Kazuhiro FUJIMOTO ; Yusuke ICHIHARA ; Takashi SAKAI ; Junji OHGI
Asian Spine Journal 2024;18(5):621-629
Methods:
Male and female patients with computed tomography data were selected. Dimensions of the first thoracic (T1), fourth lumbar (L4), and fifth lumbar (L5) vertebrae were measured, and bone models consisting of the cancellous and cortical bones made from polyurethane foam were created. PS with diameters of 4.5 mm, 5.5 mm, and 6.5 mm were used. T1 PS were 25 mm long, and L4 and L5 PS were 40 mm long. The bone models were secured with cement, and the MIT was measured using a calibrated torque wrench. After MIT testing, the PS head was attached to the machine’s crosshead. POS was then calculated at a crosshead speed of 5 mm/min until failure.
Results:
The L4 and L5 were notably larger in female bone models, whereas the T1 vertebra was larger in male bone models. Consequently, the MIT and POS for L4 and L5 were higher in female bone models across all PS diameters than in male bone models. Conversely, the MIT for T1 was higher in male bone models across all PS; however, no significant differences were observed in the POS values for T1 between sexes.
Conclusions
The mechanical properties of the proposed bone models can vary based on the vertebral structure and size. For accurate 3D surgical and mechanical simulations in the creation of custom-made medical devices, bone models must be constructed from patientspecific medical images.
7.Patient-specific mechanical analysis of pedicle screw insertion in simulated osteoporotic spinal bone models derived from medical images
Norihiro NISHIDA ; Hidenori SUZUKI ; Hanvey TETSU ; Yuki MORISHITA ; Yogesh KUMARAN ; Fei JIANG ; Masahiro FUNABA ; Kazuhiro FUJIMOTO ; Yusuke ICHIHARA ; Takashi SAKAI ; Junji OHGI
Asian Spine Journal 2024;18(5):621-629
Methods:
Male and female patients with computed tomography data were selected. Dimensions of the first thoracic (T1), fourth lumbar (L4), and fifth lumbar (L5) vertebrae were measured, and bone models consisting of the cancellous and cortical bones made from polyurethane foam were created. PS with diameters of 4.5 mm, 5.5 mm, and 6.5 mm were used. T1 PS were 25 mm long, and L4 and L5 PS were 40 mm long. The bone models were secured with cement, and the MIT was measured using a calibrated torque wrench. After MIT testing, the PS head was attached to the machine’s crosshead. POS was then calculated at a crosshead speed of 5 mm/min until failure.
Results:
The L4 and L5 were notably larger in female bone models, whereas the T1 vertebra was larger in male bone models. Consequently, the MIT and POS for L4 and L5 were higher in female bone models across all PS diameters than in male bone models. Conversely, the MIT for T1 was higher in male bone models across all PS; however, no significant differences were observed in the POS values for T1 between sexes.
Conclusions
The mechanical properties of the proposed bone models can vary based on the vertebral structure and size. For accurate 3D surgical and mechanical simulations in the creation of custom-made medical devices, bone models must be constructed from patientspecific medical images.
8.Patient-specific mechanical analysis of pedicle screw insertion in simulated osteoporotic spinal bone models derived from medical images
Norihiro NISHIDA ; Hidenori SUZUKI ; Hanvey TETSU ; Yuki MORISHITA ; Yogesh KUMARAN ; Fei JIANG ; Masahiro FUNABA ; Kazuhiro FUJIMOTO ; Yusuke ICHIHARA ; Takashi SAKAI ; Junji OHGI
Asian Spine Journal 2024;18(5):621-629
Methods:
Male and female patients with computed tomography data were selected. Dimensions of the first thoracic (T1), fourth lumbar (L4), and fifth lumbar (L5) vertebrae were measured, and bone models consisting of the cancellous and cortical bones made from polyurethane foam were created. PS with diameters of 4.5 mm, 5.5 mm, and 6.5 mm were used. T1 PS were 25 mm long, and L4 and L5 PS were 40 mm long. The bone models were secured with cement, and the MIT was measured using a calibrated torque wrench. After MIT testing, the PS head was attached to the machine’s crosshead. POS was then calculated at a crosshead speed of 5 mm/min until failure.
Results:
The L4 and L5 were notably larger in female bone models, whereas the T1 vertebra was larger in male bone models. Consequently, the MIT and POS for L4 and L5 were higher in female bone models across all PS diameters than in male bone models. Conversely, the MIT for T1 was higher in male bone models across all PS; however, no significant differences were observed in the POS values for T1 between sexes.
Conclusions
The mechanical properties of the proposed bone models can vary based on the vertebral structure and size. For accurate 3D surgical and mechanical simulations in the creation of custom-made medical devices, bone models must be constructed from patientspecific medical images.
9.Patient-specific mechanical analysis of pedicle screw insertion in simulated osteoporotic spinal bone models derived from medical images
Norihiro NISHIDA ; Hidenori SUZUKI ; Hanvey TETSU ; Yuki MORISHITA ; Yogesh KUMARAN ; Fei JIANG ; Masahiro FUNABA ; Kazuhiro FUJIMOTO ; Yusuke ICHIHARA ; Takashi SAKAI ; Junji OHGI
Asian Spine Journal 2024;18(5):621-629
Methods:
Male and female patients with computed tomography data were selected. Dimensions of the first thoracic (T1), fourth lumbar (L4), and fifth lumbar (L5) vertebrae were measured, and bone models consisting of the cancellous and cortical bones made from polyurethane foam were created. PS with diameters of 4.5 mm, 5.5 mm, and 6.5 mm were used. T1 PS were 25 mm long, and L4 and L5 PS were 40 mm long. The bone models were secured with cement, and the MIT was measured using a calibrated torque wrench. After MIT testing, the PS head was attached to the machine’s crosshead. POS was then calculated at a crosshead speed of 5 mm/min until failure.
Results:
The L4 and L5 were notably larger in female bone models, whereas the T1 vertebra was larger in male bone models. Consequently, the MIT and POS for L4 and L5 were higher in female bone models across all PS diameters than in male bone models. Conversely, the MIT for T1 was higher in male bone models across all PS; however, no significant differences were observed in the POS values for T1 between sexes.
Conclusions
The mechanical properties of the proposed bone models can vary based on the vertebral structure and size. For accurate 3D surgical and mechanical simulations in the creation of custom-made medical devices, bone models must be constructed from patientspecific medical images.
10.Early Effect of Single-dose Sitagliptin Administration on Gastric Emptying: Crossover Study Using the 13C Breath Test.
Takashi NONAKA ; Yusuke SEKINO ; Hiroshi IIDA ; Eiji YAMADA ; Hidenori OHKUBO ; Eiji SAKAI ; Takuma HIGURASHI ; Kunihiro HOSONO ; Hiroki ENDO ; Tomoko KOIDE ; Hirokazu TAKAHASHI ; Koji FUJITA ; Masato YONEDA ; Ayumu GOTO ; Akihiko KUSAKABE ; Noritoshi KOBAYASHI ; Eiji GOTOH ; Shin MAEDA ; Atsushi NAKAJIMA ; Chihiro NOSAKA ; Masahiko INAMORI
Journal of Neurogastroenterology and Motility 2013;19(2):227-232
BACKGROUND/AIMS: The gastrointestinal motility effects of endogenous incretin hormones enhanced by dipeptidyl peptidase-IV (DPP-IV) inhibitors have not yet been sufficiently investigated. The aim of this study was to determine whether single pre-prandial sitagliptin, the DPP-IV inhibitor, administration might have an effect on the rate of liquid gastric emptying using the 13C-acetic acid breath test. METHODS: Ten healthy male volunteers participated in this randomized, two-way crossover study. The subjects fasted for overnight and were randomly assigned to receive 50 mg sitagliptin 2 hours before ingestion of the liquid test meal (200 kcal per 200 mL, containing 100 mg 13C-acetate) or the test meal alone. Under both conditions, breath samples were collected for 150 minutes following the meal. Liquid gastric emptying was estimated by the values of the following parameters: the time required for 50% emptying of the labeled meal (T1/2), the analog to the scintigraphy lag time for 10% emptying of the labeled meal (Tlag), the gastric emptying coefficient and the regression-estimated constants (beta and kappa), calculated by using the 13CO2 breath excretion curve using the conventional formulae. The parameters between the 2 test conditions were compared statistically. RESULTS: No significant differences in the calculated parameters, including T1/2, Tlag, gastric emptying coefficient or beta and kappa, were observed between the 2 test conditions. CONCLUSIONS: The present study revealed that single-dose sitagliptin intake had no significant influence on the rate of liquid gastric emptying in asymptomatic volunteers.
Breath Tests
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Cross-Over Studies
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Eating
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Gastric Emptying
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Gastrointestinal Motility
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Humans
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Incretins
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Male
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Meals
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Pyrazines
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Triazoles
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Sitagliptin Phosphate