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Gene-activated matrix harboring a miR20a-expressing plasmid promotes rat cranial bone augmentation

Regenerative Biomaterials 2021年第2期8卷 34-42页

作者： Rena Shido Yoshinori Sumita masahito hara Mayumi Iwatake Shun Narahara Mayumi Umebayashi Kei-ichiro Miura Yukinobu Kodama Izumi Asahina Department of Regenerative Oral Surgery Unit of Translational MedicineNagasaki University Graduate School of Biomedical Sciences1-7-1 SakamotoNagasaki 852-8588Japan Basic&Translational Research Center for Hard Tissue Disease Unit of Translational MedicineNagasaki University Graduate School of Biomedical Sciences1-7-1 SakamotoNagasaki 852-8588Japan Laboratory of Craniofacial Tissue Engineering and Stem Cells Faculty of DentistryMcGill University3640 University StreetM43MontrealQuebec H3A 2B2Canada Department of Hospital Pharmacy Nagasaki University Hospital1-7-1 SakamotoNagasaki 852-8501Japan

Gene-activated matrix(GAM)has a potential usefulness in bone engineering as an alternate strategy for the lasting release of osteogenic proteins but efficient methods to generate non-viral GAM remain to be *** this study,we investigated whether an atelocollagen-based GAM containing naked-plasmid(p)DNAs encoding microRNA(miR)20a,which may promote osteogenesis in vivo via multiple pathways associated with the osteogenic differentiation of mesenchymal stem/progenitor cells(MSCs),facilitates rat cranial bone ***,we confirmed the osteoblastic differentiation functions of generated pDNA encoding miR20a(pmiR20a)in vitro,and its transfection regulated the expression of several of target genes,such as Bambi1 and PPARc,in rat bone marrow MSCs and induced the increased expression of ***,when GAMs fabricated by mixing 100 ll of 2%bovine atelocollagen,20mg b-TCP granules and 0.5mg(3.3 lg/ll)AcGFP plasmid-vectors encoding miR20a were transplanted to rat cranial bone surface,the promoted vertical bone augmentation was clearly recognized up to 8 weeks after transplantation,as were upregulation of VEGFs and BMP4 expressions at the early stages of ***,GAM-based miR delivery may provide an alternative non-viral approach by improving transgene efficacy via a small sequence that can regulate the multiple pathways.

关键词： gene-activated matrix in vivo gene transfer bone augmentation atelocollagen mir20a

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X-ray diagnosis with a bloating agent for foreign object ingestion

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World Journal of Clinical Cases 2014年第5期2卷 157-159页

作者： Hirokazu Tomishige Zenichi Morise Tatsuya Suzuki Fujio hara masahito Hibi Takazumi Kato Takashi Hashimoto Department of Surgery Fujita Health University School of MedicineBanbuntane Houtokukai HospitalNagoyaAichi 454-8509Japan Department of Pediatric Surgery Fujita Health University School of MedicineToyoakeAichi 470-1192Japan

The location of an ingested foreign object is often difficult to determine by X-ray if gastric air bubbles are not clear in the *** that provide negative contrast can facilitate precise object localization,which is important for object retrieval and treatment of the *** case report describes a male child,2 years and 2 mo of age,who accidentally swallowed a lithium battery while playing at home.A plain X-ray showed that the battery was in the abdomen,but it was unclear whether the object was still inside the stomach.A second X-ray examination performed after oral administration of a bloating agent to produce expansion of the stomach and provide negative contrast confirmed that the ingested battery was still in the *** battery was then carefully removed using magnetic and balloon catheters under fluoroscopic *** case report describes the successful use of an orally administered bloating agent without pain to the child in orderto determine the precise location of a foreign object in the abdomen.

关键词： Accidental ingestion Bloating agent X-ray Minimal invasion Foreign object

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Diagnosis of the jejunoileal lymphoma by double-balloon endoscopy

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World Journal of Gastrointestinal Endoscopy 2013年第3期5卷 111-116页

作者： Takashi Ibuka Hiroshi Araki Tomohiko Sugiyama Takayuki Nakanishi Fumito Onogi masahito Shimizu Takeshi hara Tsuyoshi Takami Hisashi Tsurumi Hisataka Moriwaki First Department of Internal Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Gastroenterology Gifu University School of MedicineGifu 501-1194Japan Department of Immunopathology Gifu University Graduate School of MedicineGifu 501-1194Japan

AIM:To investigate the feasibility of double-balloon endoscopy(DBE) to detect jejunoileal lymphoma,compared with fluorodeoxyglucose positron emission tomography(FDG-PET).METHODS:Between March 2004 and January 2011,we histologically confirmed involvement of malignant lymphoma of the jejunoileum in 31 patients by DBE and *** 20 patients of them,we performed with *** retrospectively reviewed the records of these 20 *** median age was 64 years(range 50-81).In the 20 patients,the pathological diagnosis of underlying non-Hodgkin's lymphoma(NHL) comprised follicular lymphoma(FL,n = 12),diffuse large B cell lymphoma(DLBCL,n = 4),mantle cell lymphoma(MCL,n = 2),enteropathy associated T cell lymphoma(ETL,n = 1) and anaplastic large cell lymphoma(ALCL,n = 1).RESULTS:Ten cases showed accumulation by FDGPET(50%).FDG-PET was positive in 3 of 12 FL cases(25%) while in 7 of 8 non-FL cases(88%,P < 0.05).Intestinal FL showed a significantly lower rate of positive FDG-PET,in comparison with other types of *** with endoscopically elevated lesions(n = 10) showed positive FDG-PET in 2(20%),but those with other type NHL did in 8 of 10(80%,P < 0.05).When the cases having elevated type was compared with those not having elevated type lesion,the number of cases that showed accumulation of FDG was significantly smaller in the former than in the ***:In a significant proportion,small intestinal involvement cannot be pointed out by ***,FL is difficult to evaluate by FDG-PET but essentially requires DBE.

关键词： Double-balloon endoscopy Non-Hodgkin’s lymphoma Jejunoileum Fluorodeoxyglucose positron emission tomography Follicular lymphoma

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Garenoxacin Prophylaxis for Febrile Neutropenia after Chemotherapy in Hematological Malignancies

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Open Journal of Internal Medicine 2016年第4期6卷 128-138页

作者： Nobuhiko Nakamura Takeshi hara Soranobu Ninomiya Yuhei Shibata Takuro Matsumoto Hiroshi Nakamura Junichi Kitagawa Yasuhito Nannya masahito Shimizu Nobuo Murakami Hisashi Tsurumi Department of Hematology Gifu University Graduate School of Medicine Gifu Japan

Background: Febrile neutropenia is one of the most serious adverse events in patients with hematological malignancies and chemotherapy. The routine use of fluoroquinolone prophylaxis in patients with hematological malignancies is controversial. Therefore, we prospectively evaluated the efficacy and safety of prophylactic use of garenoxacin for febrile neutropenia. Patients and Methods: Consecutive adult patients with hematological malignancies who were at risk for chemotherapy-induced neutropenia lasting more than seven days were eligible for present study. They received oral garenoxacin (400 mg daily) from the neutrophil count decreased to less than 1000/μl and continued until the neutropenia had resolved. The primary endpoint was incidence of febrile neutropenia, and the secondary endpoints were the type and incidence of adverse events. Results: We enrolled 46 consecutive patients (median age, 59 years). The underlying diseases comprised acute myeloid leukemia (n = 17), acute lymphoblastic leukemia (n = 3), malignant lymphoma (n = 23), and multiple myeloma (n = 3). There were 23 febrile neutropenia episodes and 2 episodes of bacteremia. There were no grade 3 or 4 adverse events;however serum creatinine levels were significantly elevated after garenoxacin administration. The overall prophylactic efficacy of garenoxacin was 50%, and there were no infection-related deaths. Conclusions: Prophylactic use of garenoxacin is effective and safe in patients with hematological malignancies. (Clinical trial registration number: UMIN000004979).

关键词： Febrile Neutropenia Prophylaxis Garenoxacin Hematological Malignancies

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Endoscopic Examination for Patients with Diarrhea after Allogeneic Stem Cell Transplantation

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Open Journal of Internal Medicine 2017年第4期7卷 105-114页

作者： Junichi Kitagawa Takuro Matsumoto Yuhei Shibata Nobuhiko Nakamura Hiroshi Nakamura Soranobu Ninomiya Yasuhito Nannya masahito Shimizu Takeshi hara Hiroshi Araki Hisashi Tsurumi Department of Hematology Graduate School of Medicine Gifu University Gifu Japan Department of Gastroenterology Graduate School of Medicine Gifu University Gifu Japan

Objective: Intestinal graft-versus-host disease (GVHD) represents one of the most serious complications of allogeneic stem cell transplantation (allo-SCT). Endoscopic and histological proof is required due to the number of differential diagnoses manifesting as diarrhea. We investigated the safety of endoscopic biopsies, and the role of conducting biopsies and inspections of the terminalileum. Patients: Thirty two colonoscopic examinations and 29 biopsies were performed for 19 patients after allo-SCT in our institute between October 2011 and May 2015. Results: Endoscopic examinations and biopsies were performed safely under the policy of transfusing platelets for thrombocytopenia (3/μL). For biopsied cases, the diagnostic consistency rate with endoscopic findings was 60%, with a tendency toward negative correlations with early examinations after diarrhea onset (25% for 0 - 1 days;62.5% for later) or low-grade GVHD according to Freiburg criteria (41.2% for grade 1, 66.7% for grade 2, 100% for higher). The terminal ileum was inspected with colonoscopy in 13 cases. Endoscopic diagnoses of the ileum were provided in 11 cases and histological diagnoses in 9 cases. Diagnostic consistency for diagnosis of the terminal ileum between endoscopy and histology was 77.8%. Conclusion: Because endoscopic and histopathological findings do not always match, caution is required when focusing on endoscopic findings alone, as there is a risk of misdiagnosis. Extensive inspection of the terminal ileum with biopsy appears useful to identify otherwise undetected lesions. Our data thus support invasive endoscopic examinations for gastrointestinal complications, including ileac inspection and biopsies under appropriate management.

关键词： Intestinal GVHD Endoscopic Evaluation Ileoscopy Colonoscopy

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运用聚乳酸-羟基乙酸共聚物膜-固定化条件培养液引导骨再生的实验研究

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中国口腔医学继续教育杂志 2016年第6期19卷 288-297页

作者： Shuhei Tsuchiya Masahiro Ohmori Kenji hara masahito Fujio Masayuki lkeno Hideharu Hibi Minoru Ueda 黄明娣不详中山大学附属口腔医院广州市陵园西路56号510060

目的：探讨是否可以通过使用条件培养液（CM）和引导骨再生（GBR）技术加速骨再生。材料与方法：CM取自大鼠骨髓基质干细胞（BMSCs）。CM被固定在聚乳酸一羟基乙酸共聚物（PLGA）膜上．该膜需用0，5mol／L氢氧化钠（NaOH）处理以提高亲... 详细信息

目的：探讨是否可以通过使用条件培养液（CM）和引导骨再生（GBR）技术加速骨再生。材料与方法：CM取自大鼠骨髓基质干细胞（BMSCs）。CM被固定在聚乳酸一羟基乙酸共聚物（PLGA）膜上．该膜需用0，5mol／L氢氧化钠（NaOH）处理以提高亲水性。实验分为4个组：PLGA膜处理①磷酸盐缓冲液（PBS；PBS—M）．②PBS和0．5mol／LNaOH（亲水性处理；PBS-HM），③CM（CM—M）．④CM和0．5mol／LNaOH（CM—HM）。通过扫描电镜观察这些实验性膜。液相色谱-串联质谱法（LC／MS／MS）测定固定在PLGA膜上的来自骨髓间充质干细胞表达的蛋白。细胞增殖实验和碱性磷酸酶（ALP）活性测定分析CM对骨髓间充质干细胞活性的影响。实验性膜被移植到大鼠颅骨骨缺损模型。移植4周和8周后进行显微CT和组织学分析。结果：来自骨髓间充质干细胞的CM可固定于PLGA膜上。PLGA膜的亲水处理可增强CM的固定。LC／MS／MS分析表明．在PLGA膜表面的固定化蛋白质属于细胞外基质蛋白．如胶原蛋白、核心蛋白多糖、纤连蛋白。CM里从PLGA膜释放出的蛋白质．可以促进大鼠骨髓间充质干细胞的细胞增殖和碱性磷酸酶活性。被CM—HM处理过的骨缺损区域新骨形成明显高于被其他组膜处理对应的骨缺损区域。结论：PLGA膜经0.5mol／LNaOH和CM处理后可促进此大鼠颅骨缺损模型的骨再生。

关键词：条件培养液引导骨组织再生组织工程

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