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排序方式: 共有2534条查询结果,搜索用时 657 毫秒
221.
Obara T Matsuura S Inoue T Kumazawa T Abe A Horikawa Y Togashi H Yuasa T Tsuchiya N Satoh S Sato K Habuchi T 《Nihon Hinyōkika Gakkai zasshi. The japanese journal of urology》2007,98(5):671-676
PURPOSE: The 1997 T staging classification for renal cell carcinoma (RCC) defined T1 as tumors measuring up to 7 cm in size and T1 is subdivided into T1a and T1b with a 4 cm cutoff value in the 2002 TMN classification. We evaluated the validity of these cutoff values by assessing the cancer-specific survival of patients with non-metastatic RCC according to a series of alternative size cutoff values. In addition, we calculated how these size cutoffs affected the disease specific survival rates. MATERIALS AND METHODS: A database containing the records of 200 patients with RCC who underwent open radical nephrectomy for N0M0 disease between 1985 January and 2004 January was evaluated. Tumors were stratified by cutoff values ranging from 3 to 9 cm with the 1 cm increments in order to evaluate whether the 7 cm cutoff value is appropriate. Next, T1 RCC were stratified by cutoff values ranging from 3 to 6 cm with the 1 cm increment in order to verify whether the 4 cm cutoff is appropriate. Lastly, tumors over 7 cm diameter were stratified by cutoff values ranging from 9 to 14 cm with the 1 cm increments in order to verify whether the present T2-3a categories could be divided according to tumor size. RESULTS: As for the T1-2 classification, a cutoff value at 7 cm or 8 cm shared the greatest prognostic power. Although there was no significant difference in T1a/T1b subclassification, a 4 cm or 5 cm cutoff value resulted in a greatest separation of survival curves for T1a and T1b. As for tumors from 9-14 cm in diameter, only a 13 cm cutoff value provided a significant difference in survival. CONCLUSIONS: Our results indicate that the present 7 cm cutoff value in the TMN system is valid in terms of prognostic value. The 4 cm cutoff value may not reflect the survival when total nephrectomy is considered, thus indicating that tumors at 4 cm cutoff value may be valid when nephron sparing surgery is considered. The 13 cm cutoff value seems to be most appropriate in N0M0 tumors with over 7 cm in diameter. 相似文献
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223.
Numakura K Tsuchiya N Obara T Tsuruta H Saito M Narita S Inoue T Horikawa Y Satoh S Habuchi T 《Japanese journal of clinical oncology》2011,41(3):440-442
A pathological diagnosis of a lesion in the ureteral wall is often attended with a difficulty. We report a case of a 54-year-old man who presented a thickening of the ureteral wall and diffuse swelling of paraaortic lymph nodes diagnosed as a non-Hodgkin lymphoma by a laparoscopic needle biopsy. This is a safe and useful technique by which target tissues can be surely obtained. 相似文献
224.
Mori T Kariya Y Komiya E Higashi S Miyagi Y Sekiguchi K Miyazaki K 《Cancer science》2011,102(5):1095-1100
Laminins present in the basement membranes (BM) of blood vessels are involved in angiogenesis and other vascular functions that are critical for tumor growth and metastasis. Two major vascular laminins, the α4 (laminin-411/421) and α5 (laminin-511/521) types, have been well characterized. We recently found a third type of vascular laminin, laminin-3B11, consisting of the α3B, β1 and γ1 chains, and revealed its biological activity. Laminin-3B11 potently stimulates vascular endothelial cells to extend lamellipodial protrusions. To understand the roles of laminin-3B11 in blood vessel functions and tumor growth, we examined localization of the laminin α3B chain in normal mammary glands and breast cancers, in comparison with the α4 and α5 laminins. In the immunohistochemical analysis, the α3B laminin was co-localized with the α4 and α5 laminins in the BM of venules and capillaries of normal breast tissues, but α3B was scarcely detected in vessels near invasive breast carcinoma cells. In contrast, the α4 laminin was overexpressed in capillaries of invasive carcinomas, where a large number of macrophages were found. The α5 laminin appeared to be weakly downregulated in cancer tissues, especially in capillary vessels. Furthermore, our in vitro analysis indicated that TNF-α significantly suppressed the laminin α3B expression in vascular endothelial cells, while it, as well as IL-1β and TGF-α, upregulated the α4 expression. These results suggest that Lm3B11/3B21 may be required for normal mature vessels and interfere with tumor angiogenesis. 相似文献
225.
226.
Abe Y Okazaki Y Hiasa K Hirata I Yoshida Y Taji T Suzuki K Okazaki M Akagawa Y 《Dental materials journal》2010,29(6):668-672
The purpose of this study was to characterize the chemical interaction between titanium surfaces and the peptide RGDS(PO(3)H(2))PA (P-RGD) synthesized from RGD peptide (RGD) and o-phospho-L-serine (P-Ser), and to determine the degree of peptide immobilization on the titanium surface. X-ray photoelectron spectroscopy showed that the adsorption amount of RGD was significantly smaller than those of P-Ser and P-RGD (p<0.05). Furthermore, although it appeared that P-RGD bonded to the surface, ultrasonic rinsing with water caused it to dissociate, releasing RGD and leaving only S(PO(3)H(2))PA bonded to the surface. These findings show that although it remains difficult to obtain a stable P-RGD layer, the phosphate functional group greatly improves immobilization of the molecule on titanium surfaces. 相似文献
227.
Ikezumi Y Suzuki T Karasawa T Kawachi H Nikolic-Paterson DJ Uchiyama M 《Pediatric nephrology (Berlin, Germany)》2008,23(4):645-650
Recent clinical trials have shown a beneficial effect of mizoribine (Miz), an immunosuppressive drug, in the treatment of
new-onset pediatric IgA nephropathy (IgAN). In this study, we evaluated the efficacy of Miz treatment in three children with
established steroid-resistant IgAN. The patients had IgAN featuring persistent proteinuria and diffuse mesangial proliferation
and had failed to respond to 2 years of treatment with prednisolone. Based upon the second biopsy results, patients were given
methylprednisolone (mPSL) pulse therapy that induced a transient reduction in proteinuria, which was reversed when the mPSL
dose was tapered. Miz therapy was then instigated in place of pulse mPSL. All three patients showed a substantial reduction
in proteinuria and resolution of hematuria within 5 months. A follow-up biopsy in two of the patients showed a substantial
reduction in the severity of glomerular lesions and a decrease in the number of activated macrophages. In conclusion, Miz
therapy was found to be a safe and effective therapy in three cases of steroid-resistant pediatric IgAN. The ability of Miz
to reduce the number of activated macrophages may be an important mechanism by which this drug ameliorated renal disease in
these patients. 相似文献
228.
229.
Atsushi Hiraoka Takashi Kumada Toshifumi Tada Masashi Hirooka Kazuya Kariyama Joji Tani Masanori Atsukawa Koichi Takaguchi Ei Itobayashi Shinya Fukunishi Kunihiko Tsuji Toru Ishikawa Kazuto Tajiri Hironori Ochi Satoshi Yasuda Hidenori Toyoda Chikara Ogawa Takashi Nishimura Takeshi Hatanaka Satoru Kakizaki Noritomo Shimada Kazuhito Kawata Atsushi Naganuma Hisashi Kosaka Tomomitsu Matono Hidekatsu Kuroda Yutaka Yata Hideko Ohama Fujimasa Tada Kazuhiro Nouso Asahiro Morishita Akemi Tsutsui Takuya Nagano Norio Itokawa Tomomi Okubo Taeang Arai Michitaka Imai Yohei Koizumi Shinichiro Nakamura Hiroko Iijima Masaki Kaibori Yoichi Hiasa Real-life Practice Experts for HCC Study Group HCC Group 《Hepatology research》2023,53(10):1031-1042