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World Journal of Clinical Cases 2022年第4期10卷 1441-1446页

作者： Daisuke Yunaiyama Akiko Aoki Hiroshi Kobayashi Miwako Someya Mitsuru Okubo kazuhiro Saito Department of Radiology Tokyo Medical University HospitalShinjuku-ku 160-0023TokyoJapan Department of Radiology Tokyo Medical University Hachioji Medical CenterHachioji-shi 193-0998Japan Department of Rheumatology Tokyo Medical University Hachioji Medical CenterHachioji-shi 193-0998Japan Department of Otorhinolaryngology Head and Neck SurgeryTokyo Medical University Hachioji Medical CenterHachioji-shi 193-0998Japan

BACKGROUND Relapsing polychondritis(RP)is a rare inflammatory disease involving the systemic cartilage,such as the auricle,trachea,and bronchiole,among others.A patient with RP shows variable symptoms based on the involved *** SUMMARY A 72-year-old Japanese woman with a history of redness of the bilateral auricles for 3 d was referred to a *** clinician prescribed antibiotics to the patient;however,the symptoms worsened;thus,she was referred to our *** and neck magnetic resonance imaging(MRI)showed edematous auricle with remarkable contrast,fluid collection in the bilateral mastoid cells,suggesting otitis *** eustachian tube(ET)on the right side was also edematous with contrast *** patient was suspected of RP according to the diagnostic criteria.A biopsy of the auricular cartilage was performed by an otorhinolaryngologist,confirming pathological proof of *** with steroids were immediately administered *** We highlight a rare case of RP with radiologically confirmed involvement of ET in the MRI.

关键词： Relapsing polychondritis Magnetic resonance imaging Contrast enhancement Otitis media with effusion Eustachian tube Case report

Confirmation of Novel Quantitative Trait Loci for Seed Dormancy at Different Ripening Stages in Rice

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Rice science 2013年第3期20卷 207-212页

作者： kazuhiro SASAKI Yuri KAZAMA Youn CHAE Tadashi SATO Graduate School of Life Sciences Tohoku University Plant Breeding Genetics and Biotechnology DivisionInternational Rice Research Institute

Seed dormancy contributes resistance to pre-harvest sprouting. Effects on respective quantitative trait loci （QTLs） for dormancy should be assessed by using fresh seeds before germinability altered through storage. We investigated QTLs related to seed dormancy using backcross inbred lines derived from a cross between Nipponbare and Kasalath. Four putative QTLs for seed dormancy were detected immediately after harvest using composite interval mapping. These putative QTLs were mapped near C1488 on chromosome 3 （qSD-3.1）, R2171 on chromosome 6 （qSD-6.1）, R1245 on chromosome 7 （qSD-7.1） and C488 on chromosome 10 （qSD-IO.1）. Kasalath alleles promoted dormancy for qSD-3.1, qSD-6.1 and qSD-7.1, and the respective proportions of phenotypic variation explained by each QTL were 12.9%, 9.3% and 8.1%. We evaluated the seed dormancy harvested at different ripening stages during seed development using chromosome segment substitution lines （CSSLs） to confirm gene effects. The germination rates of CSSL27 and CSSL28 substituted with the region including qSD-6.1 were significantly lower than those of Nipponbare and other CSSLs at the late ripening stage. Therefore, qSD-6.1 is considered the most effective novel QTL for pre-harvest sprouting resistance among the QTLs detected in this study.

关键词： chromosome segment substitution line heading date quantitative trait locus rice seeddormancy

Dietary habits and behaviors associated with nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2014年第7期20卷 1756-1767页

作者： Kenichiro Yasutake Motoyuki Kohjima kazuhiro Kotoh Manabu Nakashima Makoto Nakamuta Munechika Enjoji Department of Health and Nutrition Sciences Faculty of Health and Social Welfare SciencesNishikyushu UniversityKanzaki 842-8585Japan Department of Gastroenterology and Clinical Research Center Kyushu Medical CenterNational Hospital OrganizationFukuoka 810-8563Japan Department of Hepatology and Pancreatology Kyushu University HospitalFukuoka 812-8582Japan Faculty of Pharmaceutical Sciences Fukuoka UniversityFukuoka 814-0180Japan Health Care Center Fukuoka UniversityFukuoka 814-0180Japan

Nonalcoholic fatty liver disease(NAFLD)is one of the most frequent causes of health problems in Western(industrialized)***,the incidence of infantile NAFLD is increasing,with some of these patients progressing to nonalcoholic *** trends depend on dietary habits and *** particular,overeating and its associated obesity affect the development of *** problems in patients with NAFLD include excess intake of energy,carbohydrates,and lipids,and shortages of polyunsaturated fatty acids,vitamins,and *** nutritional therapeutic approaches are required for prophylaxis and treatment of NAFLD,continuous nutrition therapy is difficult for many patients because of their dietary habits and lifestyle,and because the motivation for treatment differs among ***,it is necessary to assess the nutritional background and to identify nutritional problems in each patient with *** assessing dietary habits,it is important to individually evaluate those that are consumed excessively or insufficiently,as well as inappropriate eating *** nutrition therapy requires patient education,based on assessments of individual nutrients,and continuing the *** this article,we update knowledge about NAFLD,review the important aspects of nutritional assessment targeting treatment success,and present some concrete nutritional care plans which can be applied generally.

关键词： Nonalcoholic fatty liver disease Nutritional therapy Carbohydrates Fatty acids Cholesterol

Recurrent renal cell carcinoma leading to a misdiagnosis of polycystic liver disease: A case report

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World Journal of Gastroenterology 2019年第18期25卷 2264-2270页

作者： Chen Liang kazuhiro Takahashi Masanao Kurata Shingo Sakashita Tatsuya Oda Nobuhiro Ohkohchi Department of Surgery University of Tsukuba Department of Diagnostic Pathology University of Tsukuba

BACKGROUND Polycystic liver disease(PCLD) with a large cystic volume deteriorates the quality of life of patients through substantial effects on the adjacent organs,recurrent cyst infections, cyst rupture, and hemorrhage. Surgical or radiological intervention is usually needed to alleviate these symptoms. We report a rare case of the cystic metastasis of renal cell carcinoma(RCC), which was misdiagnosed as PCLD, as a result of the clinical and radiological similarity between these *** SUMMARY A 74-year-old female who had undergone nephrectomy for papillary-type RCC(PRCC) was suffering from abdominal pain and the recurrent intracystic hemorrhage of multiple cysts in the liver. Imaging studies and aspiration cytology of the cysts showed no evidence of malignancy. With a diagnosis of autosomal dominant polycystic liver disease, the patient received hepatectomy for the purpose of mass reduction and infectious cyst removal. Surgery was performed without complications, and the patient was discharged on postoperative day 14. Postoperatively, the pathology revealed a diagnosis of recurrent PRCC with cystic *** This case demonstrates the importance of excluding the cystic metastasis of a cancer when liver cysts are observed.

关键词： Polycystic liver disease Polycystic kidney disease Cystic metastasis Renal cell carcinoma Case report

The anti-oncogenic effect of 17-DMAG via the inactivation of HSP90 and MET pathway in osteosarcoma cells

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Oncology Research 2023年第5期31卷 631-643页

作者： MASANORI KAWANO kazuhiro TANAKA ICHIRO ITONAGA TATSUYA IWASAKI YUTA KUBOTA HIROSHI TSUMURA Department of Orthopaedic Surgery Faculty of MedicineOita UniversityOita879-5593Japan

Heat shock protein(HSP)90 plays a crucial role in correcting the misfolded three-dimensional structure of proteins,assisting them in folding into proper ***90 is critical in maintaining the normal functions of various proteins within cells,as essential factors for cellular ***,HSP90 simultaneously supports the maturation of cancer-related proteins,including mesenchymal epithelial transition factor(MET)within tumor *** osteosarcoma cell lines had elevated MET expression in the cDNA array in our ***,a tyrosine kinase receptor,promotes proliferation and an anti-apoptotic state through the activation of the MET pathway constructed by *** this study,we treated osteosarcoma cells with an HSP90 inhibitor,17-demethoxygeldanamycin hydrochloride(17-DMAG),and assessed the changes in the MET signaling pathway and also the antitumor effect of the *** cell cycle in osteosarcoma cells administered 17-DMAG was found to be halted at the G2/M ***,treatment with 17-DMAG inhibited cell proliferation and induced *** of tumor cell proliferation was also observed in an in vivo model system,mice that were treated with *** on the results of this study,we were able to confirm that 17-DMAG promotes inhibition of osteosarcoma cell proliferation and induction of apoptosis by inhibition of MET,a protein highly expressed in osteosarcoma *** approach may be useful for the establishment of a new treatment strategy for patients resistant to the standard treatment for osteosarcoma.

关键词： Osteosarcoma MET HSP90 17-DMAG

Optimal interval for delayed retrieval surgery with reciprocating morcellators after enucleation of giant prostatic hyperplasia in holmium laser enucleation of the prostate

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Asian Journal of Urology 2024年第3期11卷 423-428页

作者： Fumiyasu Endo Masaki Shimbo Kenji Komatsu kazuhiro Ohwaki Kazunori Hattori Department of Urology St.Luke’s International Hospital9-1 Akashi-choChuo-kuTokyoJapan Department of Hygiene and Public Health Teikyo University School of Medicine Graduate School of Medicine2-11-1 KagaItabashi-kuTokyoJapan

Objective:The aim of this research was to evaluate the efficiency of reciprocating morcellation for removing giant benign prostatic hyperplasia during holmium laser enucleation of the prostate,investigate whether performing morcellation as a two-stage procedure improves tissue retrieval efficiency,and seek to determine the optimal interval between the two ***:This study included nine cases of holmium laser enucleation of the prostate with an enucleated prostate weight exceeding 200 g,indicative of substantial prostate *** was performed on Day 0(n=4),Day 4(n=1),Day 6(n=1),and Day 7(n=3).The intervals were compared regarding the morcellation efficiency,beach ball presence,and ***:The mean estimated prostate volume was 383(range 330e528)mL;the median enucleation weight was 252(interquartile range[IQR]222,342)g;and the median enucleation time was 83(IQR 62,100)*** mean morcellation efficiency was 1.44(SD 0.55)g/min on Day 0 and 13.69(SD 2.46)g/min on day *** morcellation efficiency was 4.15 g/min and 10.50 g/min on Day 4 and Day 6,respectively,with significantly higher in the two-stage group compared to one-stage group(11.0 g/min vs.1.5 g/min;p=0.014).Efficiency was strongly correlated with intervals(p<0.001);the incidences of beach balls were 100%(4/4)and 60%(3/5)in the immediate and two-stage surgery groups,***:The efficiency of two-stage morcellation with reciprocating morcellators was highly related to the postoperative interval,with the maximum efficiency reached on Day 7.

关键词： Holmium laser enucleation of the prostate Reciprocating morcellator Giant adenoma Two-stage surgery

Surgical outcome of adenosquamous carcinoma of the pancreas

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World Journal of Gastroenterology 2008年第44期14卷 6765-6770页

作者： Takehiro Okabayashi kazuhiro Hanazaki Department of Surgery Kochi Medical SchoolKohasu-OkochoNankoku-CityKochi 783-8505Japan

Adenosquamous carcinoma is rare,accounting for 3%-4% of all pancreatic carcinoma cases. These tumors are characterized by the presence of variable proportions of mucin-producing glandular elements and squamous components,the latter of which should account for at least 30% of the tumor tissue. Recently,several reports have described cases of adenosquamous carcinoma of the pancreas. However,as the number of patients who undergo resection at a single institute is limited,large studies describing the clinicopathological features,therapeutic management,and surgical outcome for adenosquamous carcinoma of the pancreas are lacking. We performed a literature review of English articles retrieved from Medline using the keywords 'pancreas' and 'adenosquamous carcinoma'. Additional articles were obtained from references within the papers identif ied by the Medline search. Our subsequent review of the literature revealed that optimal adjuvant chemotherapy and/or radiotherapy regimens for adenosquamous carcinoma of the pancreas have not been established,and that curative surgical resection offers the only chance for long-term survival. Unfortunately,the prognosis of the 39 patients who underwent pancreatic resection for adenosquamous carcinoma was very poor,with a 3-year overall survival rate of 14.0% and a median survival time of 6.8 mo. Since the postoperative prognosis of adenosquamous carcinoma of the pancreas is currently worse than that of pancreatic adenocarcinoma,new adjuvant chemotherapies and/or radiation techniques should be investigated as they may prove indispensible to the improvement of surgical outcomes.

关键词： Adenosquamous carcinoma of the pancreas Pancreatectomy Surgical outcome Survival afterpancreatic resection

Mucin phenotype of gastric cancer and clinicopathology of gastric-type differentiated adenocarcinoma

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World Journal of Gastroenterology 2010年第37期16卷 4634-4639页

作者： Tsutomu Namikawa kazuhiro Hanazaki Department of Surgery Kochi Medical School

Differentiated adenocarcinoma of the stomach is classified into gastric or intestinal phenotypes based on mucus expression. Recent advances in mucin histochemistry and immunohistochemistry have highlighted the importance of such a distinction, and it is important clinically to distinguish between gastricand intestinal-type differentiated adenocarcinoma. However, a clinical and pathological diagnosis of this type is often difficult in early gastric cancer because of histological similarities between a hyperplastic epithelium and lowgrade atypia. Furthermore, determining tumor margins is often difficult, even with extensive preoperative examination. It is therefore critical to consider these diagnostic difficulties and different biological behaviors with high malignant potential when treating patients with gastric-type differentiated adenocarcinoma.

关键词： Differentiated adenocarcinoma Gastric cancer Gastric phenotype Mucin core protein Mucous phenotype

Nonalcoholic steatohepatitis-associated hepatocellular carcinoma:Our case series and literature review

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World Journal of Gastroenterology 2010年第12期16卷 1436-1441页

作者： Yoshitaka Takuma kazuhiro Nouso Department of Gastroenterology Kurashiki Central Hospital Department of Internal Medicine National Hospital Organization Iwakuni Clinical Center Department of Molecular Hepatology Okayama University Graduate School of MedicineDentistryand Pharmaceutical Sciences

Recently,nonalcoholic steatohepatitis(NASH) has been considered to be another cause of liver cirrhosis and hepatocellular carcinoma(HCC).The natural history and prognosis of NASH are ***,we assessed the clinicopathological features of NASH-associated HCC in our experience and reviewed the literature of NASH-associated *** experienced 11 patients with NASH-associated HCC(6 male,5 female;mean age 73.8 ± 4.9 years) who received curative ***(91%) patients had been diagnosed with obesity,diabetes,hypertension,or *** patients(64%) also had a non-cirrhotic *** recurrence-free survival rates at 1,3 and 5 years were 72%,60%,and 60%.We also summarized and reviewed 94 cases of NASH-associated HCC which were reported in the literature(64 male;mean age 66 years).The majority of patients(68%) were obese,66% of patients had diabetes,and 24% had ***,26% of the HCCs arose from the non-cirrhotic *** conclusion,patients with non-cirrhotic NASH may be a high-risk group for HCC,and regular surveillance for HCC is necessary in non-cirrhotic NASH patients as well as cirrhotic patients.

关键词： Nonalcoholic steatohepatitis Hepatocellular carcinoma Nonalcoholic fatty liver disease Cryptogenic cirrhosis

In Vivo Investigation of Zr-Based Bulk Metallic Glasses Sub-Periosteally Implanted on the Bone Surface

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Journal of Materials Science and Chemical Engineering 2016年第1期4卷 46-51页

作者： kazuhiro Imai Department of Life Sciences Graduate School of Arts and Sciences The University of Tokyo Tokyo Japan

Bulk metallic glasses (BMG) show higher strength and lower Young’s modulus than SUS 316L stainless steel and Ti-6Al-4V alloys. This study aimed to investigate the reaction of Zr-based BMG sub-periosteally implanted on the surface of the rat femur, thereby evaluate the possibility of the BMG as biomaterials for osteosynthetic devices. Zr65Al7.5Ni10Cu17.5 BMG ribbons with 10 mm length, 2 mm width and 0.5 mm thickness were implanted sub-periosteally on the femur surface in three male Wistar rats for 6 weeks. Systemic effects were evaluated by measuring Cu and Ni levels in the blood, and local effects were evaluated by the histological observation of the surrounding soft tissues in contact with the BMG. The reaction of the surface of the BMG was examined with scanning electron microscopy. No increase of Cu and Ni levels in the blood was recognized. In the scanning electron microscopy observation, spherical deposits which were considered as sodium chloride crystals were observed. Neither breakage nor pitting corrosion was noted. BMG will be a promising metallic biomaterial for osteosynthetic device that must be removed.

关键词： Amorphous Alloy Bulk Metallic Glasses Biomaterial Osteosynthetic Device