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Characterization of Hydroxyapatite Film on Titanium Substrate by Sputtering Technique

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Journal of Wuhan University of Technology(Materials Science) 2005年第B12期20卷 260-262页

作者：万涛 aoki hideki KATOH Ayako Frontier Research and Development Center Tokyo Denki University Saitama 350-0394 JapanBiomedical Materials and Engineering Research Center Wuhan University of Technology Wuhan 430070China Frontier Research and Development Center Tokyo Denki University Saitama 350-0394 JapanInternational Apatite Co. Ltd.Kyobashi Bldg2-8-3Kyobashi Chuo-KuTokyo104-0032Japan International Apatite Co. Ltd. Kyobashi Bldg2-8-3Kyobashi Chuo-KuTokyo104-0032Japan

Radiofrequeut magnetron sputtering technique was used to produce calcium phosphate coated on the titurdum substrates, and the sputtered coating films were crystallized in an autoclave at 110℃ using a low temperature hydrothermal technique. The crystallization of as-sputtered coating film on the titanium substrates were amorphous calcium phosphate film. However, after the hydrothermal technique, calcium phosphate crystals grew and these were cohumnar crystal. The Ca/P ratio of sputtered coating films in 1.6 to 2.0.

关键词： sputtering crystallization hydroxyapatite

Primary hepatic leiomyosarcoma with liver metastasis of rectal cancer

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World Journal of Gastroenterology 2012年第38期18卷 5479-5484页

作者： Kiyoto Takehara hideki aoki Yuko Takehara Rie Yamasaki Kohji Tanakaya Hitoshi Takeuchi Department of Gastroenterological Surgery Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama 700-8558 Japan Department of Surgery National Hospital Organization Iwakuni Clinical Center Yamaguchi 740-8510 Japan Department of Clinical Examination National Hospital Organization Iwakuni Clinical Center Yamaguchi 740-8510 Japan

Primary hepatic leiomyosarcoma is a particularly rare tumor with a poor prognosis. Curative resection is currently the only effective treatment, and the efficacy of chemotherapy is unclear. This represents the first case report of a patient with primary hepatic leiomyosarcoma co-existing with metastatic liver carcinoma. We present a 59-year-old man who was diagnosed preoperatively with rectal cancer with multiple liver metastases. He underwent a curative hepatectomy after a series of chemotherapy regimens with modified FOLFOX6 consisting of 5-fluorouracil, leucovorin and oxaliplatin plus bevacizumab, FOLFIRI consisting of 5-fluorouracil, leucovorin and irinotecan plus bevacizumab, and irinotecan plus cetuximab. One of the liver tumors showed a different response to chemotherapy and was diag-nosed as a leiomyosarcoma following histopathological examination. This case suggests that irinotecan has the potential to inhibit the growth of hepatic leiomyosarcomas. The possibility of comorbid different histological types of tumors should be suspected when considering the treatment of multiple liver tumors.

关键词： Leiomyosarcoma Rectal cancer Metastasis Chemotherapy Surgery

Synchronous coexistence of liver metastases from cecal leiomyosarcoma and rectal adenocarcinoma: A case report

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World Journal of Gastroenterology 2017年第9期23卷 1725-1734页

作者： hideki aoki Takashi Arata Masashi Utsumi Yutaka Mushiake Tomoyoshi Kunitomo Isao Yasuhara Fumitaka Taniguchi Koh Katsuda Kohji Tanakaya Hitoshi Takeuchi Rie Yamasaki Department of Surgery Iwakuni Clinical Center Department of Pathology Iwakuni Clinical Center

Multiple liver tumors represent a challenging condition for abdominal surgeons both in the selection of technique and the rarity of diagnosis. There are no case reports on co-existence of liver metastases from both intestinal leiomyosarcoma and adenocarcinoma. The patient described in this report successfully underwent resection of both primary lesions and liver metastases in combination with chemotherapy. As for the leiomyosarcoma, the primary cecal lesion was revealed more than three years after the patient's first visit. Peritoneal, lymph-node, and lung recurrences were observed afterward, and thus surgeries on those regions were performed. Pathologically, the peritoneal and lung recurrences comprised leiomyosarcoma and the lymphnode recurrence was diagnosed as adenocarcinoma. Despite newly discovered multiple lung recurrences and regional lymph-node metastases, the patient lived a normal life for 73 mo after the initial operation based on multidisciplinary therapy. He ultimately died of liver failure due to invasive lymph-node recurrence from the rectal adenocarcinoma, in addition to multiple lung recurrences from the leiomyosarcoma. Hepatic recurrence did not occur in this patient's case, which appears to be one reason for his long-term survival.

关键词： Leiomyosarcoma Chemotherapy Multiple liver tumors Liver metastasis Adenocarcinoma

Electrical Stimulation in Addition to Passive Exercise Has a Small Effect on Spasticity and Range of Motion in Bedridden Elderly Patients: A Pilot Randomized Crossover Study

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Health 2019年第8期11卷 1072-1086页

作者： hideki Kataoka Shunpei Nakashima hideki aoki Kyo Goto Junichiro Yamashita Yuichiro Honda Yasutaka Kondo Tatsuya Hirase Junya Sakamoto Minoru Okita Department of Rehabilitation Nagasaki Memorial Hospital Nagasaki Japan Department of Physical Therapy Science Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan Department of Rehabilitation Nagasaki University Hospital Nagasaki Japan Department of Rehabilitation Nagasaki Genbaku Hospital Nagasaki Japan Institute of Biomedical Sciences Nagasaki University Nagasaki Japan

Purpose: Belt electrode skeletal muscle electrical stimulation (B-SES) can stimulate large portions of muscles including deep sites without localisation of the stimulation area. The purpose of this study is to investigate both immediate treatment effects of B-SES and long-term treatment effects of B-SES with passive exercise on range of motion (ROM) and muscle tone of lower extremities in bedridden elderly patients. Methods: Outcome measures before and after B-SES treatment alone (4 Hz, 20 min, both lower extremities) were examined for the immediate effect. Outcome measures were: ROM and Modified Ashworth scale (MAS) of hip flexion and adduction;knee flexion and extension;and knee joint distance at position of flexion abduction in hip (distance of knee). A randomized crossover trial was conducted to examine the long-term effect of adding B-SES to passive exercise on ROM and MAS. Results and Discussion: The immediate effect study had 18 patients. ROM and MAS of 4 joint angles in 2 joints and distance of knee significantly improved after B-SES treatment. The long-term effect study had 11 patients. Friedman test revealed ROM and MAS of 4 joint angles in 2 joints and distance of knee significantly improved during B-SES intervention but not control intervention. B-SES in addition to passive stretch has a more statistically significant effect on contracture and spasticity in large portions of the lower extremities of bedridden elderly patients than passive stretching alone. Conclusions: We consider B-SES a useful tool to improve the ROM in lower extremities of bedridden patients.

关键词： Bedridden Patients Belt Electrode Skeletal Muscle Electrical Stimulation Lower Extremity Muscle Tone Restriction of Range of Joint Motion

Deciphering the enigmatic spikelet traits:Resolving trade-offs for enhancing rice yield

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Molecular Plant 2024年第5期17卷 694-695页

作者： hideki Yoshida Makoto Matsuoka Institute of Fermentation Sciences Fukushima UniversityFukushima 960-1248Japan

Increasing the yield is one of the most important goals of crop *** the beginning of rice cultivation thousands of years ago,many efforts have been made to increase rice *** of the successes in this history was the Green *** tremendous improvement in the 1960s was achieved by increasing rice and wheat production through the development and widespread adoption of semi-dwarf varieties with the extensive use of fertilizers(Hedden,2003).Dwarfism in crops lowers the center of gravity of the plant body,reducing the risk of lodging and enabling farmers to use more fertilizer to increase ***-dwarf mutations in both rice and wheat created during the Green Revolution are related to the plant growth hormone gibberellin(GA).Although other mechanisms cause dwarf mutants,only GA-related semi-dwarf mutants were selected during the Green Revolution(Wang et al.,2021).While GA-related abnormalities only make plants shorter,most cases caused by other mechanisms involve not only dwarfism but also other morphological abnormalities.

关键词： dwarf crops traits

Assessing efficacy of standard impregnation techniques on die-cast aluminum alloys using X-ray micro-CT

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China Foundry 2024年第3期21卷 276-286页

作者： Ajith Bandara Koichi Kan Katanaga Yusuke Natsuto Soga Akifumi Koike Toru aoki Hamamatsu TSC Chuo Hatsumei Institute322 lida-choMinami-kuHamamatsu435-0028Japan Graduate School of Medical Photonics ShizuokaUniversityJohoku 3-5-1HamamatsuShizuoka432-8561Japan ANSeeN Inc Johoku 3-5-1HamamatsuShizuoka432-8561Japan Research Institute of Electronics ShizuokaUniversityJohoku 3-5-1HamamatsuShizuoka432-8561Japan

Utilizing lightweight Al alloys in various industrial applications requires achieving precise pressure tightness and leak *** pressure impregnation(VPI)with thermosetting polymers is commonly used to address leakage defects in die-cast Al *** this study,the efficacy of the VPI technique in sealing alloy parts was investigated using a combination of nondestructive micro X-ray computed tomography(micro XCT)and a standard leak *** results demonstrate that the commonly used water leak test is insufficient for determining the sealing ***,micro XCT shows distinct advantages by enabling more comprehensive *** reveals the presence of a low atomic number impregnates sealant within casting defects,which has low grey contrast and allows for visualizing primary leakage paths in *** effective atomic number of impregnated resin is 6.75 and that of Al alloy is 13.69 by dual-energy X-ray *** research findings will contribute to enhancing the standard VPI process parameters and the properties of impregnating sealants to improve quality assurance for impregnation in industrial metals.

关键词： nondestructive testing Al alloy die-casting vacuum pressure impregnation micro X-ray computed tomography duel-energy X-ray CT

Therapeutic potential of stem cells in subarachnoid hemorrhage

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Neural Regeneration Research 2025年第4期20卷 936-945页

作者： hideki Kanamaru Hidenori Suzuki Department of Neurosurgery Mie University Graduate School of MedicineTsuJapan

Aneurysm rupture can result in subarachnoid hemorrhage,a condition with potentially severe consequences,such as disability and *** the acute stage,early brain injury manifests as intracranial pressure elevation,global cerebral ischemia,acute hydrocephalus,and direct blood–brain contact due to aneurysm *** may subsequently cause delayed cerebral infarction,often with cerebral vasospasm,significantly affecting patient *** complications such as brain volume loss and chronic hydrocephalus can further impact *** the mechanisms of subarachnoid hemorrhage-induced brain injury is paramount for identifying effective *** cell therapy,with its multipotent differentiation capacity and anti-inflammatory effects,has emerged as a promising approach for treating previously deemed incurable *** review focuses on the potential application of stem cells in subarachnoid hemorrhage pathology and explores their role in neurogenesis and as a therapeutic intervention in preclinical and clinical subarachnoid hemorrhage studies.

关键词： delayed cerebral ischemia early brain injury matricellular protein neurogenesis stem cell therapy subarachnoid hemorrhage

Green hydrogen production by intermediate-temperature protonic solid oxide electrolysis cells:Advances,challenges,and perspectives

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InfoMat 2024年第3期6卷 22-65页

作者： Chunmei Tang Yao Yao Ning Wang Xiaohan Zhang Fangyuan Zheng Lei Du Dongxiang Luo Yoshitaka aoki Siyu Ye Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhouthe People's Republic of China Beijing Institute of Metrology Beijingthe People's republic of China Faculty of Engineering Hokkaido UniversitySapporoJapan

Protonic solid oxide electrolysis cells(P-SOECs)operating at intermediate temperatures,which have low costs,low environmental impact,and high theoretical electrolysis efficiency,are considered promising next-generation energy conversion devices for green hydrogen ***,the developments and applications of P-SOECs are restricted by numerous material-and interface-related issues,including carrier mismatch between the anode and electrolyte,current leakage in the electrolyte,poor interfacial contact,and chemical *** the past few decades,considerable attempts have been made to address these issues by improving the properties of *** review comprehensively explores the recent advances in the mechanisms governing steam electrolysis in P-SOECs,optimization strategies,specially designed components,electrochemical performance,and *** particular,given that the lack of suitable anode materials has significantly impeded P-SOEC development,the relationships between the transferred carriers and the cell performance,reaction models,and surface decoration approaches are meticulously ***,the challenges hindering P-SOEC development are discussed and recommendations for future research directions,including theoretical calculations and simulations,structural modification approaches,and large-scale single-cell fabrication,are proposed to stimulate research on P-SOECs and thereby realize efficient electricity-to-hydrogen conversion.

关键词： designed components electrochemical performance hydrogen production key materials protonic solid oxide electrolysis cells

纳米羟基磷灰石对淋巴细胞性白血病荷瘤小鼠抗瘤作用的研究

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中华儿科杂志 2007年第9期45卷 692-696页

作者：李戈黄建鸣青木秀希李妍张熔邓碧芳四川省医学科学院四川省人民医院儿科成都610072 四川省肿瘤医院肿瘤研究所日本东京国际羟基磷灰石研究所

目的探讨纳米羟基磷灰石(n-HAP)溶胶饱和溶液在淋巴细胞性白血病荷瘤小鼠(P388)体内抗瘤作用及其机制。方法 (1)n-HAP 溶胶饱和溶液的制备:高纯0.1 mol 氢氧化钙混悬液和0.06 mol 磷酸溶液,经中和反应制备出稳定的 n-HAP 溶胶饱和溶液,... 详细信息

目的探讨纳米羟基磷灰石(n-HAP)溶胶饱和溶液在淋巴细胞性白血病荷瘤小鼠(P388)体内抗瘤作用及其机制。方法 (1)n-HAP 溶胶饱和溶液的制备:高纯0.1 mol 氢氧化钙混悬液和0.06 mol 磷酸溶液,经中和反应制备出稳定的 n-HAP 溶胶饱和溶液,浓度为167 mg/L(室温、pH>7)。经透射电镜、X-衍射图谱和红外光谱测定其表征。(2)建立 P388实体瘤型荷瘤小鼠模型:将60只 P388荷瘤小鼠随机分为治疗组36只和对照组24只。治疗组包括:①n-HAP 低剂量组(35 mg/kg)、②n-HAP 高剂量组(53 mg/kg)、③联合用药组(n-HAP 53 mg/kg 与环磷酰胺35 mg/kg 联合应用),每组各12只。对照组分为阴性对照组(生理盐水0.1 ml/g)和阳性对照组(环磷酰胺35 mg/kg),腹腔注射,连续3 d;用细胞形态学、病理学和透射电镜等方法,观察药物对各组荷瘤小鼠生长、瘤体大小及细胞凋亡等影响。结果 (1)自制 n-HAP 溶胶饱和溶液,经透射电镜观测 n-HAP 形状为球形,平均粒径<50 nm。X-衍射图谱表明 n-HAP 为一种透明或液态的典型的非结晶结构,通过谱线增宽分析,粒径<20 nm(Scherrer 理论);X-衍射图谱还可见到 n-HAP 在800℃结晶作用下形成的磷灰石晶体结构。n-HAP 经红外光谱检测含氢氧化物离子结构,证实是羟基磷灰石纳米晶体。(2)动物体内实验:n-HAP 低剂量组、n-HAP 高剂量组和联合用药组对 P388实体瘤的抑制率分别为14.95%、32.67%和60.45%,与阴性对照组比较,差异均有统计学意义(P<0.01)。体外透射电镜结果显示,n-HAP 对 P388细胞有抑制生长、诱导凋亡作用。结论 n-HAP 溶胶饱和溶液对淋巴细胞白血病实体瘤荷瘤小鼠有显著的抑瘤作用,且呈明显的量效关系,联合用药抑瘤作用更为显著。n-HAP 有可能用于恶性血液病及肿瘤的治疗和联合化疗。

关键词：白血病,淋巴细胞白血病P388 羟基磷灰石类