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| 1 | Effects of fibril- or fixed-collagen on matrix metalloproteinase-1 and tissue inhibitor of matrix metalloproteinase-1 production in the human hepatocyte cell line HLE显示文摘AIM: Matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) are central to the spontaneous resolution of liver fibrosis. The mechanisms involved have been investigated in hepatic steilate cells (ISC), but not in hepatocytes. We investigated the effects of fibril- and fixed-collagen on MMP-1 and TIMP-1 production in hepatocytes, using the HLE cell line.METHODS: Fibril type T and Ⅳ collagen were prepared by HCl digestion of type T and Ⅳ collagen, respectively.For fixed-collagen, culture dishes were coated with fibril type Ⅰ or Ⅳ collagen and fixed by ultraviolet. Type Ⅰcollagenase activity was measured using fluorescein isothiocyanate-labeled type Ⅰ collagen. MMP-1 and TIMP-1 in HLE cells were measured by a one-step sandwich enzyme immunoassay.RESULTS: Both fibril type Ⅰand Ⅳ collagen significantly increased type Ⅰ coilagenase activity about two-fold compared with no fibril collagen. The effects of the fibril collagen were not affected by the coating condition. There was no significant difference in the effects on collagenase activity between cells cultured in medium containing fibril type Ⅰ collagen and those cultured in the presence of type Ⅳ collagen. Both types of fibril collagen significantly increased MMP-1 production, and showed more than 10-fold higher levels of MMP-1 than the control. The enhanced MMP-1 production by fibril collagens was unaffected by the coating condition. By contrast, TIMP-1 production was not changed by the addition of fibril type Ⅰ or Ⅳ collagen,and neither was it affected by the coating conditions.Coating with type Ⅰ collagen significantly suppressed MMP-1production by almost one-tenth compared with no coating.By contrast, lIMP-1 production was not affected by either the absence of a collagen coat or by increasing the concentration of the coating collagen.CONCLUSION: These results indicated that, in HLE cells,fibril- and fixed-collagen have opposite effects on MMP-1production without affecting TIMP production. Fibril collagen induced collagenase activity by up-regulation of MMP-1 production without affecting TIMP-1 production.By contrast, fixed collagen reduced MMP-1 production.Our results suggest that hepatocytes might also play an important role in the regulation of the hepatic fibrosis alongside HSC. | Makoto Nakamuta Kazuhiro Kotoh Munechika Enjoji Hajime Nawata | 2005 | World Journal of Gastroenterology2005，11，15： | 14 |
| 2 | Clinical significance of serum levels of vascular endothelial growth factor and its receptor in biliary disease and carcinoma显示文摘AIM: To investigate the clinical significance of serum vascular endothelial growth factor (VEGF) and soluble VEGF receptor-1 (VEGFR1/Flt-1) (sVEGFR1) levels in biliary diseases.METHODS: We analyzed the serum levels of these proteins in patients with acute cholangitis (group 1), biliary malignancies (group 2), and primary biliary cirrhosis or primary sclerosing cholangitis (group 3), and in healthy donors (group 4). The influence of inflammation was also analyzed. Serum VEGF levels were expressed as VEGF per platelet (VEGF/PLT, pg/106) in order to exclude the influence of platelet counts.RESULTS: sVEGFR1 levels were significantly higher in groups 1 and 2 than in the control group, but did not correlate with inflammatory markers. VEGF/PLT levels were generally higher in patients with active inflammation than in those with carcinoma. C-reactive protein strongly correlated with the levels of serum VEGF independently of platelet and leukocyte counts, even in cancer patients. In cancer patients, VEGF/PLT and sVEGFR1 levels might be indicators for evaluating the effect of medical treatment or the disease progression.CONCLUSION: Serum VEGF and VEGFR1 might be useful markers for gauging the clinical effect of various treatments on patients. | Munechika Enjoji Makoto Nakamuta Koji Yamaguchi Satoshi Ohta Kazuhiro Kotoh Marie Fukushima Masami Kuniyoshi Tomomi Yamada Masao Tanaka Hajime Nawata | 2005 | World Journal of Gastroenterology2005，11，8： | 9 |
| 3 | Local recurrence is an important prognostic factor of hepatocellular carcinoma显示文摘AIM: To clarify the importance of complete treatment by PEIT.METHODS: A total of 140 previously untreated cases of HCC were enrolled in this study from 1988 to 2002. The inclusion criteria were: a solitary tumor less than 4 cm in diameter or multiple tumors, fewer than four in number and less than 3 cm in diameter, without extrahepatic metastasis or vessel invasion. As general principles for the treatment of HCC, the patients underwent transcatheter arterial chemoembolization (TACE) prior to PEIT. After the initial treatment of the patients,ultrasonography and computed tomography were performed, and measurement of serum levels of α-fetoprotein (AFP) was determined. When tumor recurrences were detected, PEIT and/or TACE were repeated whenever the hepatic functional reserve of the patient permitted. We then analyzed the variables that could influence prognosis, including tumor size and number, the serum levels of AFP, the parameters of hepatic function (albumin, bilirubin, ALT, hepaplastin test,platelet number, and indocyanine green retention at 15min [ICG-R15]), combined therapy with TACE, distant recurrence, and local recurrence.RESULTS: Univariate analysis identified the ICG test,serum levels of AFP and albumin, tumor size and number,and local recurrence, but not distant recurrence, as significant prognostic variables. In multivariate analysis using those five parameters, the ICG test, tumor size, tumor number,and local recurrence were identified as significant prognostic factors. In both univariate and multivariate analyses, the relative risk for the ICG test was the highest, followed by local recurrence.CONCLUSION: We found that local recurrence is an independent prognostic factor of HCC, indicating that achieving complete treatment for HCC on first treatment is important for improving the prognosis of patients with HCC. | Eiichirou Arimura Kazuhiro Kotoh Makoto Nakamuta Shusuke Morizono Munechika Enjoji Hajime Nawata | 2005 | World Journal of Gastroenterology2005，11，36： | 7 |
| 4 | High relative fat-free mass is important for maintaining serum albumin levels in patients with compensated liver cirrhosis显示文摘AIM: In patients with liver cirrhosis, hypoalbuminemia causes edema and ascites, and a reduction in the quality of life. Since musculature is catabolized to supply amino acids for albumin synthesis in malnutritional cirrhotic patients, muscular volume is hypothesized to play an important role in albumin production. Therefore, we investigated the correlation between serum albumin levels and the fat-free mass (FFM) in cirrhotic patients.METHODS: Fifty-seven patients (26 males and 31 females)with compensated liver cirrhosis were evaluated. Patients with edema or ascites were excluded from the study.Healthy volunteers (n = 104; 48 males and 56 females)were also evaluated as controls. FFM was measured using 5-500 kHz multifrequency bioelectric impedance analysis.To minimize the difference in FFM distribution between males and females, we introduced a new marker, relative FFM (rFFM), which represents the ratio of FFM in a patient relative to that in a volunteer of the same height. Following FFM measurement, the serum albumin levels of patients were assayed monthly.RESULTS: In patients with active cirrhosis (alanine aminotransaminase [ALT] >50 U/L), both albumin (the difference between maximum and minimum levels) and the standard deviation of albumin levels (SD-albumin) during the observation period showed a significant correlation with rFFM. Multiple linear regression analysis using variables such as rFFM, platelet number, and serum cholesterol levels,choline esterase, albumin, bilirubin, and ALT revealed that rFFM and ALT were significant and independent factors that influenced albumin or SD-albumin in cirrhotic patients.CONCLUSION: Our results indicate that cirrhotic patients with high rFFM showed less of a decrease in albumin levels, and that the muscle volume is one of the most important factors for maintaining serum albumins level in active cirrhosis. Exercise and protein-rich nutrition at the early stage of liver cirrhosis may be advisable for maintaining or increasing muscular volume. | Kazuhiro Kotoh Makoto Nakamuta Marie Fukushima Chitose Matsuzaki Munechika Enjoji Hironori Sakai Hajime Nawata | 2005 | World Journal of Gastroenterology2005，11，9： | 4 |
| 5 | Coincidence between malignant perivascular epithelioid cell tumor arising in the gastric serosa and lung adenocarcinoma显示文摘A 4-mo history of both epigastralgia and back pain was presented in a 39-year-old male. Computed tomography showed right lung nodule and abdominal mass attached to the gastric wall, measuring approximately 30 mm and 70 mm in diameter. Since biopsy samples from the lung and abdomen revealed poorly differentiated adenocarcinoma and malignant tumor, clinicians first interpreted the abdominal mass as metastatic carcinoma, and a right lower lobectomy with following resection of the mass was performed. Gross examination of both lesions displayed gray-whitish to yellow-whitish cut surfaces with hemorrhagic and necrotic foci, and the mass attached to the serosa of the lesser curvature on the gastric body. On microscopic examination, the lung tumor was composed of a proliferation of highly atypical epithelial cells having abundant eosinophilic cytoplasm, predominantly arranged in an acinar or solid growth pattern with vessel permeation, while the abdominal tumor consisted of sheets or nests with markedly atypical epithelioid cells having pleomorphic nuclei and abundant eosinophilic to clear cytoplasm focally in a radial perivascular or infiltrative growth pattern. Immunohistochemically, the latter cells were positive for HMB45 or α-smooth muscle actin, but the former ones not. Therefore, we finally made a diagnosis of malignant perivascular epithelioid cell tumor(PEComa) arising in the gastric serosa, combined with primary lung adenocarcinoma. Furthermore, small papillary car-cinoma of the thyroid gland was identified. The current case describes the coincidence of malignant PEComa with other carcinomas, posing a challenge in distinction from metastatic tumor disease. | Sohsuke Yamada Atsunori Nabeshima Hirotsugu Noguchi Aya Nawata Hisae Nishii Xin Guo Ke-Yong Wang Masanori Hisaoka Toshiyuki Nakayama | 2015 | World Journal of Gastroenterology2015，21，4： | 2 |
| 6 | Anatomy of right recurrent nerve node: why does early metastasis of esophageal cancer occur in it?显示文摘 | Masaomi Mizutani Gen Murakami Shin-ichi Nawata Ichiro Hitrai Wataru Kimura | 2006 | Surgical and Radiologic Anatomy2006，，4： | 2 |
| 7 | Adult case of an omphalomesenteric cyst resected by laparoscopic-assisted surgery显示文摘这份报告由帮助 laparoscopic 的外科描述脐肠系膜包囊 resected 的一个极其稀罕的成年案例。A 29-years-old 日语人被提交并且因为一个腹的团和提高的浆液 CEA (carcinoembryonic 抗原) ,承认了到九州大学医院在 2001 年 8 月的水平(21.3 ng/mL ) 。腹的 CT 和美国与中隔和石灰化表明了一个膀胱的团。腹腔镜检查显示了一个大团被纳入他的腹壁,测量 110 公里 x 70 公里 x 50 公里并且充满了粘液。团是由帮助 laparoscopic 的外科的 resected。它的墙的组织检查所见显示出纤维肌性织物,脂肪组织,石灰化,和肠的结构。是脐肠系膜包囊最后被诊断。 | Fumi Sawada Rie Yoshimura Kenichi Ito Kazuhiko Nakamura Hajime Nawata Kazuhiro Mizumoto Shuji Shimizu Takahiro Inoue Takashi Yao Masazumi Tsuneyoshi Atushi Kondo Naohiko Harada | 2006 | World Journal of Gastroenterology2006，12，5： | 2 |
| 8 | Total hip arthroplasty with bulk femoral head autograft for acetabular reconstruction in developmental dyspasia of the hip显示文摘 | Kobayshi S Satio N Nawata M | 2003 | Bone Joint Surg (Am)2003，85，4： | 1 |
| 9 | Androgen - insensitivity syndrome as a possible coactivator disease显示文摘 | Adachi M TR Tomura A Imasaki K Kato S Goto K Yanase T Ikuyama S Nawata H | 2000 | N Engl J Med2000，343，： | 1 |
| 10 | Sulfonylurea as well as elevated glucose levels stimulate reactive oxygen species production in the pancreatic β-cell line, MIN6—a role of NAD(P)H oxidase in β-cells显示文摘 | Hirotaka Tsubouchi Toyoshi Inoguchi Mieko Inuo Maiko Kakimoto Toshiyo Sonta Noriyuki Sonoda Shuji Sasaki Kunihisa Kobayashi Hideki Sumimoto Hajime Nawata | 2004 | Biochemical and Biophysical Research Communications2004，，1： | 1 |
| 11 | Blocking of monocyte chemoattractant protein-1 (MCP-1) activity attenuates the severity of acute pancreatitis in rats显示文摘 | Toshiaki Ishibashi Haifeng Zhao Ken Kawabe Takamasa Oono Kensuke Egashira Koichi Suzuki Hajime Nawata Ryoichi Takayanagi Tetsuhide Ito | 2008 | Journal of Gastroenterology2008，，1： | 1 |
| 12 | A novel ATP- binding cassette transporter involved in multidrug resistance in the phytopathogenic fungus Penicillium digitatum 显示文摘 | NAKAUNE R ADACHI K NAWATA O | 1998 | Appl Environ Microbiol1998，64，： | 1 |
| 13 | Role of plant height in the submergence tolerance of rice: a simulation analysis using an empirical model 显示文摘 | KOTERA A NAWATA E | 2007 | Agricultural Water Management2007，89，1： | 1 |
| 14 | Saturated non-esterified fatty acids stimulate de novo diacylglycerol synthesis and protein kinase c activity in cultured aortic smooth muscle cells显示文摘 | H. Y. Yu T. Inoguchi M. Kakimoto N. Nakashima M. Imamura T. Hashimoto F. Umeda H. Nawata | 2001 | Diabetologia2001，，5： | 1 |
| 15 | Autoimmune Pancreatitis as a New Clinical Entity (Three Cases of Autoimmune Pancreatitis with Effective Steroid Therapy)显示文摘 | Tetsuhide Ito Itsuro Nakano Shujiro Koyanagi Toshihiko Miyahara Yoshikatsu Migita Keiichiro Ogoshi Hironori Sakai Shizu Matsunaga Osamu Yasuda Toshihiko Sumii Hajime Nawata | 1997 | Digestive Diseases and Sciences1997，，7： | 1 |
| 16 | Involvement of reactive oxygen species and nitric oxide in gastric ischemia-reperfusion injury in rats: protective effect of tetrahydrobiopterin 显示文摘 | Ishii M Shimizu S Nawata S | 2000 | Dig Dis Sci2000，45，1： | 1 |
| 17 | Regulation of squamous cell carcinoma antigen production by E-cadherin mediated cell-cell adhesion in squamous cell carcinoma cell line显示文摘 | HirrakawaH Nawata S Sueoka K | 2004 | Oncol Rep2004，11，3： | 1 |
| 18 | Aromatase in bone cell: association with osteoporosis in postmenopausal women 显示文摘 | Nawata H Tanaka S Tanaka S | 1995 | J Steroid Bioehem Mol Biol1995，53，： | 1 |
| 19 | Possible triggering effect of cytomegalovirus infection on systemic lupus erythematosus显示文摘 | M. Nawata N. Seta M. Yamada I. Sekigawa N. Iida H. Hashimoto | 2001 | Scandinavian Journal of Rheumatology2001，，： | 1 |
| 20 | Use of bone morphogenetic protein 2 and diffusion chambers to engineer cartilage tissue for the repair of defects in articular cartilage显示文摘 | WAKITANI S NAKAYA H | 2005 | Arthritis Rheum2005，52，1： | 1 |
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