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Kasuno K, Ueda S, Tanaka A, Tanaka-Kasuno Y, Kuwahara T. Pulmonary angiomyolipoma recurring 26 years after nephrectomy for angiomyolipoma: benign clinical course. Clin Nephrol 2005; 62:469-72. [PMID: 15630908 DOI: 10.5414/cnp62469] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Angiomyolipoma (AML), a benign renal tumor, has various clinical forms, and the nature of AML is not sufficiently understood because of few reports of long-term observation. We report a 57-year-old female without tuberous sclerosis who developed multiple pulmonary AML 26 years after a right nephrectomy for renal AML. A computed tomogram demonstrated multifocal round lesions with lipid-like density throughout both lung fields. An open lung biopsy revealed a histological diagnosis of pulmonary AML. An abdominal computed tomogram was also compatible with splenic AML. She has been in good health for 12 years since the lung biopsy over the 38 years since the nephrectomy. This case suggests that multicentric AML can recur at distant organs even after long-term silence in a patient who has a past history of renal AML.
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Matsuura T, Yamagishi S, Kodama Y, Shibata R, Ueda S, Narama I. Otsuka Long-Evans Tokushima fatty (OLETF) rat is not a suitable animal model for the study of angiopathic diabetic retinopathy. INTERNATIONAL JOURNAL OF TISSUE REACTIONS 2005; 27:59-62. [PMID: 16035649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We have previously shown that the peak latency of oscillatory potential (OP), the earliest electroretinographic manifestation of diabetic retina, was prolonged in Otsuka Long-Evans Tokushima Fatty (OLETF) rat, a model of non-insulin-dependent diabetes. These observations suggest that retinal neuronal dysfunction revealed by the OP abnormality in the electroretinogram takes place prior to the angiopathic diabetic changes in this animal model. However whether acellular capillaries and pericyte ghosts, one of the histopathological hallmarks of early diabetic retinopathy in humans, could occur in OLETF rat remains to be elucidated. In the present study, we first prepared the retinal trypsin digests of OLETF and control Long-Evans Tokushima Otsuka (LETO) rats at 45 weeks old and then compared the number of acellular capillaries and pericyte ghosts in the retinas of OLETF rats with that in LETO rats. Blood glucose levels were higher in the OLETF rats than those in LETO rats. Retinal capillaries of OLETF rats were found to remain morphologically normal and pericyte ghosts were barely detectable. There was no difference in the number of acellular capillaries in the retinas between OLETF and LETO rats. The present study indicates that acellular capillaries and pericyte ghosts, the characteristic morphological changes in early diabetic retinopathy, are not accelerated in OLETF rats. Our data suggest that OLETF rat is not a suitable animal model for the study of angiopathic diabetic retinopathy.
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Ashie Y, Hosaka J, Ishihara K, Itow Y, Kameda J, Koshio Y, Minamino A, Mitsuda C, Miura M, Moriyama S, Nakahata M, Namba T, Nambu R, Obayashi Y, Shiozawa M, Suzuki Y, Takeuchi Y, Taki K, Yamada S, Ishitsuka M, Kajita T, Kaneyuki K, Nakayama S, Okada A, Okumura K, Ooyabu T, Saji C, Takenaga Y, Desai S, Kearns E, Likhoded S, Stone JL, Sulak LR, Walter CW, Wang W, Goldhaber M, Casper D, Cravens JP, Gajewski W, Kropp WR, Liu DW, Mine S, Smy MB, Sobel HW, Sterner CW, Vagins MR, Ganezer KS, Hill J, Keig WE, Jang JS, Kim JY, Lim IT, Ellsworth RW, Tasaka S, Guillian G, Kibayashi A, Learned JG, Matsuno S, Takemori D, Messier MD, Hayato Y, Ichikawa AK, Ishida T, Ishii T, Iwashita T, Kobayashi T, Maruyama T, Nakamura K, Nitta K, Oyama Y, Sakuda M, Totsuka Y, Suzuki AT, Hasegawa M, Hayashi K, Inagaki T, Kato I, Maesaka H, Morita T, Nakaya T, Nishikawa K, Sasaki T, Ueda S, Yamamoto S, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Goodman JA, Sullivan GW, Turcan D, Scholberg K, Habig A, Fukuda Y, Jung CK, Kato T, Kobayashi K, Malek M, Mauger C, McGrew C, Sarrat A, Sharkey E, Yanagisawa C, Toshito T, Miyano K, Tamura N, Ishii J, Kuno Y, Nagashima Y, Takita M, Yoshida M, Kim SB, Yoo J, Okazawa H, Ishizuka T, Choi Y, Seo HK, Gando Y, Hasegawa T, Inoue K, Shirai J, Suzuki A, Koshiba M, Nakajima Y, Nishijima K, Harada T, Ishino H, Nishimura R, Watanabe Y, Kielczewska D, Zalipska J, Berns HG, Gran R, Shiraishi KK, Stachyra A, Washburn K, Wilkes RJ. Evidence for an oscillatory signature in atmospheric neutrino oscillations. PHYSICAL REVIEW LETTERS 2004; 93:101801. [PMID: 15447395 DOI: 10.1103/physrevlett.93.101801] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2004] [Indexed: 05/14/2023]
Abstract
Muon neutrino disappearance probability as a function of neutrino flight length L over neutrino energy E was studied. A dip in the L/E distribution was observed in the data, as predicted from the sinusoidal flavor transition probability of neutrino oscillation. The observed L/E distribution constrained nu(micro)<-->nu(tau) neutrino oscillation parameters; 1.9x10(-3)<Deltam(2)<3.0x10(-3) eV(2) and sin((2)2theta>0.90 at 90% confidence level.
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Tanita T, Tomoyasu M, Nagumo T, Mizuno M, Ueda S, Kondo T, Handa M, Kawazoe K. [Preoperative evaluation for lung resection using right ventricular hemodynamic functions by unilateral pulmonary arterial occlusion test]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2004; 57:913-8; discussion 918-20. [PMID: 15462339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
We performed a unilateral pulmonary arterial occlusion (UPAO) test for the preoperative evaluation of right ventricular functions as a loading test in patients undergoing a lung resection without cardiac complications preoperatively. We investigated the relationship between changes in right ventricular hemodynamic functions and postoperative cardiac complications, namely right heart failure or arrhythmia. To evaluate the right ventricular hemodynamic function test, we measured the mean pulmonary arterial pressure, cardiac index, right ventricular ejection fraction end-diastolic volume, and stroke volume before and during the UPAO test using the thermodilution method, and calculated the total pulmonary vascular resistance and right ventricular stroke work indexes. The incidence of postoperative cardiac complications was not related to the changes in the total pulmonary vascular resistance index. However, the postoperative cardiac complications were common in patients whose right ventricular end-diastolic volume index was increased by more than 20% during the UPAO test. These results suggest that the changes in the right ventricular end-diastolic volume index during the UPAO test can predict postoperative cardiac complications in patients undergoing a pulmonary resection.
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Shimabukuro M, Higa N, Takasu N, Tagawa T, Ueda S. A single dose of nateglinide improves post-challenge glucose metabolism and endothelial dysfunction in Type 2 diabetic patients. Diabet Med 2004; 21:983-6. [PMID: 15317602 DOI: 10.1111/j.1464-5491.2004.01272.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS This randomized crossover placebo-controlled study aimed to assess the efficacy of nateglinide, a phenylalanine-derived insulin secretagogue, on forearm endothelial function in diabetic subjects before and after an oral glucose load. METHODS Forearm blood flow (FBF) was measured using strain-gauge plethysmography during reactive hyperaemia before and after an oral glucose load (75 g) with a prior use of placebo or nateglinide (90 mg) in 15 diet-treated Type 2 diabetic patients or age-matched controls with normal glucose tolerance. RESULTS The peak FBF response and total reactive hyperaemic flow (flow debt repayment: FDR), indices of resistance artery endothelial function, were decreased after an oral glucose load in diabetic patients, but unchanged in controls. Nateglinide administered to diabetic patients accelerated insulin secretion and reduced post-challenge plasma glucose, and also abolished the post-challenge impairment of endothelial function. The peak FBF and FDR were well correlated with 120-min glucose levels and 30-min insulinogenic index. CONCLUSIONS A single challenge of glucose was shown to impair endothelial function in diabetic patients, and the post-challenge endothelial dysfunction was improved by a prior use of nateglinide. Long-term effects of nateglinide on endothelial function in Type 2 diabetic patients need to be clarified in future studies.
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Ahn MH, Aoki S, Ashie Y, Bhang H, Boyd S, Casper D, Choi JH, Fukuda S, Fukuda Y, Gran R, Hara T, Hasegawa M, Hasegawa T, Hayashi K, Hayato Y, Hill J, Ichikawa AK, Ikeda A, Inagaki T, Ishida T, Ishii T, Ishitsuka M, Itow Y, Iwashita T, Jang HI, Jang JS, Jeon EJ, Joo KK, Jung CK, Kajita T, Kameda J, Kaneyuki K, Kato I, Kearns E, Kibayashi A, Kielczewska D, Kim BJ, Kim CO, Kim JY, Kim SB, Kobayashi K, Kobayashi T, Koshio Y, Kropp WR, Learned JG, Lim SH, Lim IT, Maesaka H, Maruyama T, Matsuno S, Mauger C, Mcgrew C, Minamino A, Mine S, Miura M, Miyano K, Morita T, Moriyama S, Nakahata M, Nakamura K, Nakano I, Nakata F, Nakaya T, Nakayama S, Namba T, Nambu R, Nishikawa K, Nishiyama S, Noda S, Obayashi Y, Okada A, Oyama Y, Pac MY, Park H, Saji C, Sakuda M, Sarrat A, Sasaki T, Sasao N, Scholberg K, Sekiguchi M, Sharkey E, Shiozawa M, Shiraishi KK, Smy M, Sobel HW, Stone JL, Suga Y, Sulak LR, Suzuki A, Suzuki Y, Takeuchi Y, Tamura N, Tanaka M, Totsuka Y, Ueda S, Vagins MR, Walter CW, Wang W, Wilkes RJ, Yamada S, Yamamoto S, Yanagisawa C, Yokoyama H, Yoo J, Yoshida M, Zalipska J. Search for electron neutrino appearance in a 250 km long-baseline experiment. PHYSICAL REVIEW LETTERS 2004; 93:051801. [PMID: 15323684 DOI: 10.1103/physrevlett.93.051801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2004] [Indexed: 05/24/2023]
Abstract
We present a search for electron neutrino appearance from accelerator-produced muon neutrinos in the K2K long-baseline neutrino experiment. One candidate event is found in the data corresponding to an exposure of 4.8 x 10(19) protons on target. The expected background in the absence of neutrino oscillations is estimated to be 2.4+/-0.6 events and is dominated by misidentification of events from neutral current pi(0) production. We exclude the nu(micro) to nu(e) oscillations at 90% C.L. for the effective mixing angle in the 2-flavor approximation of sin((2)2theta(microe)( approximately 1/2sin((2)2theta(13))>0.15 at Deltam(2)(microe)=2.8 x 10(-3) eV(2), the best-fit value of the nu(micro) disappearance analysis in K2K. The most stringent limit of sin((2)2theta(microe)<0.09 is obtained at Deltam(2)(microe)=6 x 10(-3) eV(2).
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Takahashi T, Ueda S, Ebisawa M, Asai G, Yamamoto N. Cyclooxygenase-2 (COX-2) inhibition with meloxicam in combination with paclitaxel and carboplatin in advanced non-small cell lung cancer (NSCLC). J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.7282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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208
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Liu DW, Ashie Y, Fukuda S, Fukuda Y, Ishihara K, Itow Y, Koshio Y, Minamino A, Miura M, Moriyama S, Nakahata M, Namba T, Nambu R, Obayashi Y, Sakurai N, Shiozawa M, Suzuki Y, Takeuchi H, Takeuchi Y, Yamada S, Ishitsuka M, Kajita T, Kaneyuki K, Nakayama S, Okada A, Ooyabu T, Saji C, Desai S, Earl M, Kearns E, Messier MD, Stone JL, Sulak LR, Walter CW, Wang W, Barszczak T, Casper D, Cravens JP, Gajewski W, Kropp WR, Mine S, Smy MB, Sobel HW, Sterner CW, Vagins MR, Ganezer KS, Hill J, Keig WE, Kim JY, Lim IT, Ellsworth RW, Tasaka S, Kibayashi A, Learned JG, Matsuno S, Takemori D, Hayato Y, Ichikawa AK, Ishida T, Ishii T, Iwashita T, Kameda J, Kobayashi T, Maruyama T, Nakamura K, Nitta K, Oyama Y, Sakuda M, Totsuka Y, Suzuki AT, Hasegawa M, Hayashi K, Inagaki T, Kato I, Maesaka H, Morita T, Nakaya T, Nishikawa K, Sasaki T, Ueda S, Yamamoto S, Haines TJ, Dazeley S, Hatakeyama S, Svoboda R, Blaufuss E, Goodman JA, Guillian G, Sullivan GW, Turcan D, Scholberg K, Habig A, Ackermann M, Jung CK, Kato T, Kobayashi K, Martens K, Malek M, Mauger C, McGrew C, Sharkey E, Viren B, Yanagisawa C, Toshito T, Mitsuda C, Miyano K, Shibata T, Ishii J, Kajiyama Y, Kuno Y, Nagashima Y, Takita M, Yoshida M, Kim HI, Kim SB, Yoo J, Okazawa H, Ishizuka T, Choi Y, Seo HK, Gando Y, Hasegawa T, Inoue K, Shirai J, Suzuki A, Koshiba M, Hashimoto T, Nakajima Y, Nishijima K, Ishino H, Morii M, Nishimura R, Watanabe Y, Kielczewska D, Zalipska J, Gran R, Shiraishi KK, Washburn K, Wilkes RJ. Limits on the neutrino magnetic moment using 1496 days of Super-Kamiokande-I solar neutrino data. PHYSICAL REVIEW LETTERS 2004; 93:021802. [PMID: 15323899 DOI: 10.1103/physrevlett.93.021802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2004] [Indexed: 05/24/2023]
Abstract
A search for a nonzero neutrino magnetic moment has been conducted using 1496 live days of solar neutrino data from Super-Kamiokande-I. Specifically, we searched for distortions to the energy spectrum of recoil electrons arising from magnetic scattering due to a nonzero neutrino magnetic moment. In the absence of a clear signal, we found micro(nu)</=(3.6x10(-10))micro(B) at 90% C.L. by fitting to the Super-Kamiokande day-night spectra. The fitting took into account the effect of neutrino oscillation on the shapes of energy spectra. With additional information from other solar neutrino and KamLAND experiments constraining the oscillation region, a limit of micro(nu)</=(1.1x10(-10))micro(B) at 90% C.L. was obtained.
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Maeda Y, Yamaguchi T, Ueda S, Miyazato H, Matsuda M, Kanamaru A. All-trans retinoic acid reduced skin involvement of adult T-cell leukemia. Leukemia 2004; 18:1159-60. [PMID: 15085162 DOI: 10.1038/sj.leu.2403356] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Iwashita H, Yoshida M, Nishi T, Otani M, Ueda S. In vivo transfer of a neuronal nitric oxide synthase expression vector into the rat bladder by electroporation. BJU Int 2004; 93:1098-103. [PMID: 15142171 DOI: 10.1111/j.1464-410x.2003.04788.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To investigate the possibility of in vivo gene transfer by attempting to transfer the neuronal nitric oxide synthase (nNOS) gene into rat bladder using electroporation. MATERIALS AND METHODS The bladder was exposed through an abdominal midline incision in 8-week-old male rats. Plasmid DNA of the marker genes green fluorescent protein (GFP) and luciferase, and the nNOS gene, was then injected into the subserosal space of the bladder and electroporation applied. At 72 h after gene transfer, GFP and luciferase were assayed in the isolated bladder and immunohistochemical staining used to detect nNOS; NO(x) released from isolated bladder strips was also assessed using microdialysis and high-performance liquid chromatography. RESULTS From the luciferase assay, 45 V, 1 Hz, 50 ms and eight pulses were selected as the optimum conditions for electroporation. Bladder specimens with GFP genes injected by electroporation showed bright and numerous sites of GFP expression in the smooth muscle layer. In rats with the nNOS gene injected by electroporation there was marked nNOS immunoreactivity, and NO(x) released from bladder strips was significantly greater than in the control groups. CONCLUSIONS These results suggest that electroporation is a useful technique for in vivo gene transfer into rat bladder smooth muscles, and that the nNOS gene transferred by this procedure functionally expresses and contributes to NO production.
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Kondo K, Ueda S, Chikuchi Y, Kawabata H, Akata N, Hasegawa H, Mitamura O, Seike Y, Inaba J. Effect of salinity on biological concentrations of137Cs in phytoplankton inhabited in brackish Lake Obuchi, Japan, bordered by nuclear fuel facilities. J Radioanal Nucl Chem 2004. [DOI: 10.1023/b:jrnc.0000037096.62190.4d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ueda S, Ohtsuka Y, Kondo K. Inventories of239+240Pu,137Cs, and excess210Pb in sediment cores from brackish Lake Obuchi, Rokkasho Village, Japan. J Radioanal Nucl Chem 2004. [DOI: 10.1023/b:jrnc.0000034859.90493.0a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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213
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Kondo K, Kawabata H, Ueda S, Hasegawa H, Mitamura O, Seike Y, Inaba J, Ohmomo Y. Distribution and dynamics of radionuclides and stable elements in the coastal waters off Rokkasho Village, Japan, prior to the opening of a nuclear reprocessing facility. J Radioanal Nucl Chem 2004. [DOI: 10.1023/b:jrnc.0000027065.78718.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ibrahim MA, Asai H, Satoh S, Satoh N, Ueda S. Effect of zaprinast on nitric oxide levels in serum and aortic tissue. ACTA ACUST UNITED AC 2004; 26:19-24. [PMID: 14988737 DOI: 10.1358/mf.2004.26.1.793468] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Nitric oxide (NO), which is synthesized from the guanidino nitrogen of l-arginine by nitric oxide synthase (NOS), plays an important role in many physiological and pathological processes. Most of the effects of NO are mediated by cyclic guanosine 3'5 monophosphate (cGMP), which is synthesized by soluble guanylate cyclase (sGC) and degraded by phosphodiesterases (PDEs). Although the NO/cGMP pathway has been extensively studied, remarkably little is known about the regulation of NO release. Furthermore, controversial studies have indicated that intervention of the sGC/cGMP pathway modulates the release of NO. The purpose of this study was to evaluate the hypothesis that drugs that affect the sGC/cGMP pathway may modulate NO release and, if so, is there a correlation between NO levels and blood pressure effect? To this end, we investigated the effects of the PDE 5 inhibitor zaprinast on mean arterial pressure (MAP), nitrite/nitrate levels and cGMP in normotensive male Sprague Dawley rats. The results of the current study indicated that zaprinast dose-dependently increased plasma cGMP levels at 18, 24 and 36 mg/kg and decreased MAP at 24 and 36 mg/kg. However, zaprinast at 18, 24 and 36 mg/kg did not affect NO levels either in serum or aortic tissue. We have concluded that the PDE 5 inhibitor zaprinast has no regulatory effect on NO release in serum and aortic tissue, and NO was not involved in the hypotensive effect of zaprinast.
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Ota K, Takahashi K, Agishi T, Sonda T, Oka T, Ueda S, Amemiya H, Shiramizu T, Okazaki H, Akiyama N, Hasegawa A, Kawamura T, Takagi H, Ueno A. Multicentre trial of ABO-incompatible kidney transplantation. Japanese Biosynsorb ABO-incompatible kidney transplant study group. Transpl Int 2003; 5 Suppl 1:S40-3. [PMID: 14628736 DOI: 10.1007/978-3-642-77423-2_13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
A multicentre study of ABO incompatible kidney transplantation using Biosynsorb was started in Japan in November 1989. A total of 51 cases were registered comprising 23 cases of A incompatibility, 26 cases of B incompatibility and two cases of AB incompatibility. The removal of antibodies (IgG and IgM) was carried out using Biosynsorb in 16 cases, plasmapheresis in four cases and use of both combined in 31 cases. The treatment using Biosynsorb was repeated 3.4 times on average. Serum titres of anti-A (IgG and IgM) antibodies decreased to 4.9 +/- 5.0 and 2.7 +/- 1.7 and for anti-B titres decreased to 2.8 +/- 3.5 and 2.4 +/- 3.2. Rejection was found in 33 cases: hyperacute one, accelerated acute five, and acute 27. In two cases rejection was developed concomitantly with a steep elevation in antibody titres. Three patients died, two with functioning grafts. Eight grafts were lost. Patient and graft survivals at 2 years were 94.1% and 84.3%, respectively. From these results it is concluded that: 1. Biosynsorb and plasmapheresis are effective in removing anti-A and anti-B antibodies; 2. graft and patient survivals are similar to those in ABO compatible cases; 3. anti-A and anti-B titres less than 16 are recommended at the time of transplantation; 4. anti-A and anti-B titres higher than 128 may be considered as a risk factor for rejection in the early stages after transplantation.
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Kondo K, Kawabata H, Ueda S, Akata N, Mitamura O, Seike Y, Inaba J, Ohmomo Y. Distribution and dynamics of radionuclides and stable elements in the coastal waters off Rokkasho Village, Japan, prior to the opening of a nuclear reprocessing facility. J Radioanal Nucl Chem 2003. [DOI: 10.1023/b:jrnc.0000011739.58313.b8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Mizuki M, Ueda S, Matsumura I, Ishiko J, Schwäble J, Serve H, Kanakura Y. Oncogenic receptor tyrosine kinase in leukemia. Cell Mol Biol (Noisy-le-grand) 2003; 49:907-22. [PMID: 14656048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Growth, survival and differentiation of hematopoietic cells are regulated by the interaction between hematopoietic growth factors and their receptors. While the defect in this interaction results in an insufficient hematopoiesis, the aberrantly elevated activation leads to the transformation of hematopoietic cells. The constitutive active mutations of receptor tyrosine kinase, such as c-Kit platelet-derived growth factor receptor (PDGFR) or fins-like tyrosine kinase 3 (Flt3), play a major role in the development of hematopoietic neoplasia. The constitutive activation is provoked by several mechanisms, such as making fusion genes by chromosomal translocations, or various mutations involving regulatory regions of the receptor. The chromosomal translocation brings the receptor intracytoplasmic domain juxtaposed to an unrelated molecule which has dimerization or multimerization motif, resulting in the constitutive dimerization of the receptor. The missense, insertion or deletion mutations in the regulatory regions, such as juxtamembrane domain, activation loop and extracellular domain, cause constitutive activation by releasing the respective auto-inhibitory functions of each regulatory region. Constitutive active receptors generate different signals quantitatively and qualitatively from wild type receptor, which mediate the oncogenic phenotype. Given the frequent involvement of constitutive active receptor tyrosine kinase in hematopoietic malignancies, targeted inhibitions of active tyrosine kinase and downstream aberrant signaling are rapidly developing novel therapeutic modality with much promise.
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Tachibana M, Yoshimura H, Kinugasa S, Shibakita M, Dhar DK, Ueda S, Fujii T, Nagasue N. Postoperative chemotherapy vs chemoradiotherapy for thoracic esophageal cancer: a prospective randomized clinical trial. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2003; 29:580-7. [PMID: 12943623 DOI: 10.1016/s0748-7983(03)00111-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Neither postoperative radiotherapy nor chemotherapy alone provided a survival benefit after curative esophagectomy for esophageal squamous carcinoma. MATERIAL AND METHODS Of 103 consecutive patients who underwent potentially curative esophagectomy for esophageal squamous carcinoma, 45 patients with advanced cancers without preoperative adjuvant treatments were prospectively randomized to two groups; postoperative chemotherapy alone (Group A, n=23) and postoperative radio/chemotherapy (Group B, n=22). In Group A, cisplatin (CDDP) (50 mg/m(2)) was given by intravenous infusion on days 1 and 15, and 5-fluorouracil (5-FU) (300 mg/m(2)) was given daily by continuous intravenous infusion for 5 weeks. In Group B, in addition to the same chemotherapeutic regimen of Group A, 50 Gy of radiotherapy was given to the mediastinum over 5 weeks. The immunohistochemical staining of tumoral p53 and microvessel density was undertaken to correlate to the radio/chemosensitivity. RESULTS There were no significant differences in the clinicopathologic characteristics between the two groups. The median dose of 5-FU and CDDP administered were not significantly different between the two groups. The mean (SD) dose of radiotherapy in Group B was 42+10 Gy. The 1-, 3- and 5-year survival rates in Group A were 100, 63 and 38% and those in Group B were 80, 58 and 50%, respectively (P=0.97). In each group, four patients succumbed to locoregional recurrences. Tumoral p53 was immunohistochemically negative in 43% in Group A and 77% in Group B (P=0.03), indicating that many patients in Group B might be potentially sensitive to radiochemotherapy. The 3- and 5-year survival rates (75 and 64%) of patients with p53 negative expression (n=18) were significantly (P=0.03) better than those with p53 positive expression (n=27, 44 and 26%). The long-term survival was better for patients with p53 negative tumours than those with p53 positive tumours in Group B (P=0.06 by long-rank test, P<0.05 by Generalized-Wilcoxon test). However, the long-term survival was not different between the patients who had p53 negative and positive tumours in Group A (P=0.19). These data suggest that there were no survival advantage for patients receiving radiotherapy in Group B, instead p53 negative tumours appeared to have a favorable prognosis. CONCLUSION Postoperative radiotherapy administered concurrently with chemotherapy does not provide a survival benefit compared with chemotherapy alone. Tumoral p53 expression has a predictive value for survival in patients treated with postoperative radio/chemotherapy.
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Ueda S, Okawa Y. The subjective dimension of functioning and disability: what is it and what is it for? Disabil Rehabil 2003; 25:596-601. [PMID: 12959333 DOI: 10.1080/0963828031000137108] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The International Classification of Functioning, Disability and Health (ICF, WHO 2001) made a great advancement over ICIDH of 1980 in the understanding of the human functioning and disability. However, in both of them there is an important 'missing' element. That is the subjective dimension of functioning and disability. One of the authors (S. Ueda) published on this topic in 1981 both in Japanese and English. It had originated from his clinical experience in rehabilitation medicine. The understanding of the inner world of the client has proved a great asset in clinical practice. This paper explains its importance and provides a definition. It also proposes a tentative framework of a classification of subjective dimension of functioning and disability as the starting point for more intensive and extensive discussion on this important problem, and for its future inclusion into ICF.
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Dainichi T, Ueda S, Isoda M, Koga T, Kinukawa N, Nose Y, Ishii K, Amano S, Horii I, Furue M. Chemical peeling with salicylic acid in polyethylene glycol vehicle suppresses skin tumour development in hairless mice. Br J Dermatol 2003; 148:906-12. [PMID: 12786820 DOI: 10.1046/j.1365-2133.2003.05282.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Chemical peeling with salicylic acid in polyethylene glycol (PEG) vehicle is used clinically to improve the cosmetic appearance of skin that has been damaged by exposure to the sun. It is well known that cancers of the skin such as basal cell carcinoma and squamous cell carcinoma may be induced by the sun. However, the carcinogenic potential of chemical peeling agents has not been studied. OBJECTIVES To evaluate the effects of chemical peeling with 30% salicylic acid in PEG on skin tumour formation in treated vs. control mice. METHODS To serve as a model of sun-damaged skin, hairless SKH/hr1 mice were irradiated with ultraviolet (UV) B for 14 weeks, with or without treatment every 2 weeks with 30% salicylic acid in PEG for a total of 18 weeks. RESULTS Not only was the total number of tumours greatly reduced in the treated vs. the control mice, but skin tumour development was also slower in the treated vs. the control mice. At the final treatment, the fractions of T and B lymphocytes and natural killer cells from spleens of both groups of mice were comparable, and interferon-gamma production did not differ. CONCLUSIONS Our findings suggest that chemical peeling with salicylic acid in PEG may help to prevent as well as to reduce the number of UVB-induced skin tumours.
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Okuda K, Takanishi T, Yoshimoto K, Ueda S. Trazodone hydrochloride attenuates thermal hyperalgesia in a chronic constriction injury rat model. Eur J Anaesthesiol 2003; 20:409-15. [PMID: 12790215 DOI: 10.1017/s0265021503000632] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVE Trazodone hydrochloride is used in the treatment of neuropathic pain. However, the analgesic effects of trazodone on neuropathic pain are controversial. The study was undertaken to determine the analgesic effect of trazodone on a chronic constriction injury model. METHODS We tested the effect of trazodone on thermal hyperalgesia due to a chronic constriction injury of the sciatic nerve in rats and examined the effects of lesions in the descending and ascending serotonergic system induced by 5,7-dihydroxytriptamine (5,7-DHT). RESULTS The analgesic effects of trazodone showed a clear dose dependency. Furthermore, the analgesic effect of trazodone was observed in rats injected with 5,7-DHT into the dorsal raphe nucleus and medial raphe nucleus. CONCLUSIONS The results suggest that a mainly serotonergic descending pain control pathway mediates the analgesic effects of trazodone.
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Sakata K, Kashiwagi K, Sharmin S, Ueda S, Igarashi K. Acrolein produced from polyamines as one of the uraemic toxins. Biochem Soc Trans 2003; 31:371-4. [PMID: 12653641 DOI: 10.1042/bst0310371] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
It is well known that the addition of spermine or spermidine to culture medium containing ruminant serum inhibits cellular proliferation. This effect is caused by the products of oxidation of polyamines that are generated by serum amine oxidase. Among the products, we found that acrolein is a major toxic compound produced from spermine and spermidine by amine oxidase. We then analysed the level of polyamines (putrescine, spermidine and spermine) and amine oxidase activity in plasma of patients with chronic renal failure. It was found that the levels of putrescine and the amine oxidase activity were increased, whereas spermidine and spermine were decreased in plasma of patients with chronic renal failure. The levels of free and protein-conjugated acrolein were also increased in plasma of patients with chronic renal failure. An increase in putrescine, amine oxidase and acrolein in plasma was observed in all cases such as diabetic nephropathy, chronic glomerulonephritis and nephrosclerosis. These results suggest that acrolein is produced during the early stage of nephritis through kidney damage and also during uraemia through accumulation of polyamines in blood due to the decrease in their excretion into urine.
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Kondo K, Kawabata H, Akata N, Inaba J, Mitamura O, Seike Y, Ohmomo Y, Ueda S. J Radioanal Nucl Chem 2003; 258:33-41. [DOI: 10.1023/a:1026241622032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ueda S. Biologic characterization of a secondary glioblastoma with extracranial progression and systemic metastasis. Neuro Oncol 2003. [DOI: 10.1215/15228517-5-1-14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Iyogi T, Ueda S, Hisamatsu S, Kondo K, Sakurai N, Inaba J. Radon concentration in indoor occupational environments in Aomori Prefecture, Japan. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2003; 67:91-108. [PMID: 12660042 DOI: 10.1016/s0265-931x(02)00162-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The (222)Rn concentrations in indoor workplaces were measured in Aomori Prefecture, Japan, and the results are reported here. This survey was part of a program to measure background natural radiation dose rate in the prefecture where the first Japanese nuclear fuel cycling facilities are now under construction. The survey of the (222)Rn concentrations in indoor workplaces was carried out at 107 locations from 1996 to 1998. The (222)Rn concentrations were measured for approximately one year at each site with passive Rn detectors, which used a polycarbonate film for counting alpha-rays and could separate concentrations of (222)Rn from (220)Rn. Weeklong measurements of (222)Rn concentration and working level were carried out with active detectors to get the ratio of (222)Rn concentration during working hours to non-working hours as well as equilibrium factors in selected locations. Diurnal variation of (222)Rn concentration depended on building structure, air-conditioning, time of day and day of the week (week days or weekend). The (222)Rn concentration during working hours was generally lower than that in non-working hours. Although the annual average (222)Rn concentration in indoor occupational environments was higher than that in dwellings, radiation dose for Aomori Prefecture residents from Rn in the former was 14% of the total indoor dose by Rn because of the lower concentration in working hours and lower occupancy factor.
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Kamijima Y, Ishii I, Yamagata S, Satho N, Yamada Y, Mochizuki M, Ueda S. 2P-0359 Gender-specific efficacy of HMG-CoA reductase inhibitors on the prevention of stroke: A meta-analysis of randomized, placebo-controlled, double-blind trials by gender. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90502-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wada Y, Yamaguchi T, Kuwahara T, Sugiyama Y, Kikukawa H, Ueda S. Primitive neuroectodermal tumour of the kidney with spontaneous regression of pulmonary metastases after nephrectomy. BJU Int 2003; 91:121-2. [PMID: 12614265 DOI: 10.1046/j.1464-410x.2003.04019.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kondo K, Kawabata H, Ueda S, Hasegawa H, Inaba J, Mitamura O, Seike Y, Ohmomo Y. J Radioanal Nucl Chem 2003; 257:305-312. [DOI: 10.1023/a:1024775511376] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nanjou Y, Ueda S, Itoh T, Tatenuma K, Matsuyama M, Watanabe K. Development of a Column Packing Material for Gas Chromatographic Separation of Hydrogen Isotopes. FUSION SCIENCE AND TECHNOLOGY 2002. [DOI: 10.13182/fst02-a22764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hishikawa Y, Kohno H, Ueda S, Kimoto T, Dhar DK, Kubota H, Tachibana M, Koji T, Nagasue N. Expression of metallothionein in colorectal cancers and synchronous liver metastases. Oncology 2002; 61:162-7. [PMID: 11528256 DOI: 10.1159/000055368] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aim of this study is to clarify whether the expression of metallothionein (MT) is related with the malignant potential in primary colorectal cancer and/or synchronous liver metastasis. Immunohistochemical staining for MT was performed on the specimens of adenocarcinoma of the colon and rectum and its liver metastases in 34 patients treated with curative surgery, respectively. Expression of MT was compared with clinicopathological variables and patient survival. In patients with primary colorectal cancer, positive expression was found in 7 of 34 (20.6%) patients, but MT was not detected in any of the cases of liver metastases (0%; p = 0.0111). In the primary tumor, positive MT expression was significantly associated with a higher degree of lymph node involvement (mean +/- SD: 48.4 +/- 33.8 vs. 18.6 +/- 24.4% in MT-positive and MT-negative tumors, respectively; p = 0.0122). The survival rate in the patients with MT-negative tumors was significantly better than that in those with MT-positive tumors as primary sites (p = 0.0198). MT expression in colorectal cancer may be a potential marker affecting lymph node metastases and may be a predictor of a poor prognosis, particularly in patients with synchronous liver metastases.
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Iyogi T, Ueda S, Hisamatsu S, Kondo K, Haruta H, Katagiri H, Kurabayashi M, Nakamura Y, Tsuji N. J Radioanal Nucl Chem 2002; 254:175-179. [DOI: 10.1023/a:1020870304571] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Oota H, Saitou N, Ueda S. A Large-scale Analysis of Human Mitochondrial DNA Sequences with Special Reference to the Population History of East Eurasian. ANTHROPOL SCI 2002. [DOI: 10.1537/ase.110.293] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Fujisawa T, Aikawa K, Takahashi T, Yamai S, Ueda S. Occurrence of clostridia in commercially available curry roux. SHOKUHIN EISEIGAKU ZASSHI. JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN 2001; 42:394-7. [PMID: 11875825 DOI: 10.3358/shokueishi.42.394] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The occurrence of clostridia was investigated in a total of 60 commercially available curry roux samples. Clostridia were isolated from 37 (62%) samples, and Clostridium perfringens was isolated from 7 (12%) samples. The isolates of C. perfringens did not produce enterotoxin. The frequency of occurrence was higher by the enrichment broth culture detection method than by the agar plate or pouch method. These findings suggest that enrichment broth culture is necessary for the detection of clostridia.
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Ishizuya-Oka A, Ueda S, Inokuchi T, Amano T, Damjanovski S, Stolow M, Shi YB. Thyroid hormone-induced expression of sonic hedgehog correlates with adult epithelial development during remodeling of the Xenopus stomach and intestine. Differentiation 2001; 69:27-37. [PMID: 11776392 DOI: 10.1046/j.1432-0436.2001.690103.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sonic hedgehog (Shh) was isolated from the Xenopus laevis intestine as an early thyroid hormone (TH) response gene. To investigate possible roles of TH-upregulated expression of Shh during metamorphosis, we raised a polyclonal antibody against Xenopus Shh and immunohistochemically examined the relationship between Shh expression and the larval-to-adult intestinal remodeling at the cellular level. Our results indicate that the epithelial-specific expression of Shh in the intestine spatiotemporally correlates well with active proliferation and/or initial differentiation of the secondary (adult) epithelial primordia that originate from stem cells, but not with apoptosis of the primary (larval) epithelium. Given the similar transformations of the stomach during metamorphosis, we also analyzed Shh expression in this organ and found similar correlations in the stomach, although the position of the adult epithelial primordia and their final differentiation in the stomach are different from those in the intestine. Furthermore, we show here that Shh expression is organ-autonomously induced by TH and its correlation with the adult epithelial development is reproduced in vitro in both the intestine and the stomach. More importantly, addition of recombinant Shh protein to the culture medium results in developmental anomalies of both organs. However, differentiation of the adult epithelium is more severely inhibited by exogenous Shh in the intestine than in the stomach. These results suggest that TH-upregulated expression of Shh plays important roles in the postembryonic gastrointestinal remodeling, but its roles are at least partially different between the intestine and the stomach.
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Ueda S, Masumori-Maemoto S, Wada A, Ishii M, Brosnihan KB, Umemura S. Angiotensin(1-7) potentiates bradykinin-induced vasodilatation in man. J Hypertens 2001; 19:2001-9. [PMID: 11677365 DOI: 10.1097/00004872-200111000-00010] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND It has been clearly demonstrated that angiotensin(1-7) potentiates the vasodilating effect of bradykinin in isolated vessels of animals. OBJECTIVE To investigate the interaction between angiotensin(1-7) Ang(1-7) and bradykinin in human forearm resistant vessels of normotensive healthy men in vivo, by the measurement of forearm blood flow using venous occlusion, strain-gauge plethysmography with intra-arterial infusions of peptides in a placebo-controlled, double-blind, cross-over design. METHODS In eight men, bradykinin was infused intra-arterially twice; placebo, Ang(1-7), or angiotensin II was co-infused with the second infusion. The effect of inhibition of nitric oxide synthase on the interaction between Ang(1-7) and bradykinin was also tested in eight other individuals. The effects of Ang(1-7) were analyzed by analysis of variance (ANOVA) and by the ratios of individually derived areas under the dose-response curves (AUC) of bradykinin, adjusted for changes in the AUCs by repeated infusions of bradykinin with placebo. RESULTS Ang(1-7) (1000 pmol/min) significantly potentiated the vasodilating effect of bradykinin compared with the effect of saline (P = 0.0471, ANOVA) and in a dose-dependent manner (adjusted AUC ratio [95% confidence interval (CI)] 2.75 (1.72 to 3.78) with 1000 pmol/min, 1.62 (1.31 to 1.93) with 100 pmol/min, and 0.98 (0.80, to 1.09) with 10 pmol/min). This effect was completely abolished by co-infusion of NG-monomethyl-l-arginine [AUC ratio 0.98 (0.90 to 1.04)]. Ang(1-7) did not affect the vasodilating effects of either acetylcholine or sodium nitroprusside. CONCLUSIONS Ang(1-7) potentiates the vasodilating effect of bradykinin, possibly through a mechanism(s) involving nitric oxide release, in human forearm resistance vessels.
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Ueda S, Yamaoka K, Sawai Y, Nakagawa T. Introduction of recirculatory analysis into portal and systemic concentration difference method. Biol Pharm Bull 2001; 24:1298-304. [PMID: 11725968 DOI: 10.1248/bpb.24.1298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recirculatory analysis was introduced into the portal and systemic concentration difference method with double dosing (PS-DD method), which is an evaluation system for the local intestinal and hepatic first-pass effect. 5-Fluorouracil (5-FU) and cephalexin (CEX) were selected as model drugs. A new recirculatory system was constructed to predict the time courses of a drug concentration in the systemic and portal bloods. Bioavailability (F), local absorption ratio (Fa), hepatic recovery ratio (FH), and local mean absorption time (ta) estimated by recirculatory analysis were close to those calculated by moment analysis with numerical integration. Using recirculatory analysis, the sampling period was considerably shortened and the sampling number was also reduced, which demonstrates that recirculatory analysis is useful in PS-DD method.
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Noda R, Kim CG, Takenaka O, Ferrell RE, Tanoue T, Hayasaka I, Ueda S, Ishida T, Saitou N. Mitochondrial 16S rRNA sequence diversity of hominoids. J Hered 2001; 92:490-6. [PMID: 11948216 DOI: 10.1093/jhered/92.6.490] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We determined nucleotide sequences of the 16S rRNA gene of mitochondrial DNA (mtDNA) (about 1.6 kb) for 35 chimpanzee, 13 bonobo, 10 gorilla, 16 orangutan, and 23 gibbon individuals. We compared those data with published sequences and estimated nucleotide diversity for each species. All the ape species showed higher diversity than human. We also constructed phylogenetic trees and networks. The two orangutan subspecies were clearly separated from each other, and Sumatran orangutans showed much higher nucleotide diversity than Bornean orangutans. Some gibbon species did not form monophyletic clusters, and variation within species was not much different from that among species in the subgenus Hylobates.
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Yamamoto D, Ueda S, Senzaki H, Shoji T, Haijima H, Gondo H, Tanaka K. New diagnostic approach to intracystic lesions of the breast by fiberoptic ductoscopy. Anticancer Res 2001; 21:4113-6. [PMID: 11911303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Intracystic tumors of the breast are uncommon and, at the time of ultrasonography and aspiration cytology, it is difficult to distinguish cancer from a benign tumor. The Fiberoptic Ductoscopy System (FDS) is an emerging technique allowing direct visual access to the ductal system of the breast. FDS was inserted through the cannulae into the cavity and we observed the intracystic tumors (3 intracystic papillomas and 2 intracytsic papillary carcinomas). The appearance of the malignant tumors was irregular, rough-shaped and they tended to bleed. On the contrary, benign tumors had smooth surfaces without bleeding. Cytological findings showed malignant cells in one out of two breast cancer patients. In addition, in the immunohistochemical study of resected tumor tissues from 5 patients, we observed positive reactions with anti-ErbB-2 antibody in 2 intracystic papillary carcinomas. In contrast, none of the histologically confirmed benign lesions (3 intracystic papillomas) gave positive results. In conclusion, the use of FDS as a non-invasive technique may provide valuable information.
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Nakamura TY, Pountney DJ, Ozaita A, Nandi S, Ueda S, Rudy B, Coetzee WA. A role for frequenin, a Ca2+-binding protein, as a regulator of Kv4 K+-currents. Proc Natl Acad Sci U S A 2001; 98:12808-13. [PMID: 11606724 PMCID: PMC60135 DOI: 10.1073/pnas.221168498] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Frequenin, a Ca(2+)-binding protein, has previously been implicated in the regulation of neurotransmission, possibly by affecting ion channel function. Here, we provide direct evidence that frequenin is a potent and specific modulator of Kv4 channels, the principal molecular components of subthreshold activating A-type K(+) currents. Frequenin increases Kv4.2 current amplitudes (partly by enhancing surface expression of Kv4.2 proteins) and it slows the inactivation time course in a Ca(2+)-dependent manner. It also accelerates recovery from inactivation. Closely related Ca(2+)-binding proteins, such as neurocalcin and visinin-like protein (VILIP)-1 have no such effects. Specificity for Kv4 currents is suggested because frequenin does not modulate Kv1.4 or Kv3.4 currents. Frequenin has negligible effects on Kv4.1 current inactivation time course. By using chimeras made from Kv4.2 and Kv4.1 subunits, we determined that the differential effects of frequenin are mediated by means of the Kv4 N terminus. Immunohistochemical analysis demonstrates that frequenin and Kv4.2 channel proteins are coexpressed in similar neuronal populations and have overlapping subcellular localizations in brain. Coimmunoprecipitation experiments demonstrate that a physical interaction occurs between these two proteins in brain membranes. Together, our data provide strong support for the concept that frequenin may be an important Ca(2+)-sensitive regulatory component of native A-type K(+) currents.
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Kato S, Ueda S, Tamaki K, Fujii M, Miyazono K, ten Dijke P, Morimatsu M, Okuda S. Ectopic expression of Smad7 inhibits transforming growth factor-beta responses in vascular smooth muscle cells. Life Sci 2001; 69:2641-52. [PMID: 11712667 DOI: 10.1016/s0024-3205(01)01350-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Vascular injury stimulates the cytokine-growth factor network in the vascular wall, including transforming growth factor-beta (TGF-beta). Reportedly, the intracellular signaling of TGF-beta is mediated by Smad proteins. We tested the effects of the ectopic expression of inhibitory Smads in cultured rat smooth muscle cells (SMC) to identify the role of TGF-beta/Smad signaling on the phenotypic modulation of SMC. The cells exposed to human recombinant TGF-beta1 (10 ng/ml) were stimulated Smad2 phosphorylation. Infection with the replication-deficient adenovirus vector expressing Smad7, but not bacterial beta-galactosidase or Smad6, was found to inhibit TGF-beta-induced Smad2 phosphorylation in a dose-dependent manner. TGF-beta suppressed the serum-induced proliferation of SMC from 36.3% to 51.0% (p<0.01), as measured by hand-counting, and this inhibition was attenuated by the ectopic expression of Smad7 (from 30.7% to 74.8% of the reduction of TGF-beta-response, p<0.05), but not Smad6. A BrdU incorporation assay also showed that TGF-beta-mediated growth inhibition was attenuated by exogenous Smad7 and that this inhibition can be reversed by an additional expression of exogenous Smad2. TGF-beta increased the expression of alpha-smooth muscle actin and myosin heavy chain by 1.3-fold and 1.6-fold in comparison to the control, respectively, and these increases were attenuated by exogenous Smad7, but not Smad6. Our data indicate that Smads mediate TGF-beta responses on SMC phenotypes. Smad7, but not Smad6, may specifically act as an inhibitor of TGF-beta responses.
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Yoshikawa M, Ebara M, Saisho H, Ueda S. [Hepatic arterial infusion chemotherapy (anthracycline)]. NIHON RINSHO. JAPANESE JOURNAL OF CLINICAL MEDICINE 2001; 59 Suppl 6:612-6. [PMID: 11762022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Tachibana M, Yoshimura H, Kinugasa S, Dhar DK, Shibakita M, Ohno S, Ueda S, Fujii T, Nagasue N. Clinicopathologic factors correlated with number of metastatic lymph nodes in oesophageal cancer. Dig Liver Dis 2001; 33:534-8. [PMID: 11816540 DOI: 10.1016/s1590-8658(01)80103-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND The number of metastatic lymph nodes is applied to the staging system of gastric cancer and colorectal cancer. However, it has not been evaluated in oesophageal cancer. PATIENTS AND METHODS Of 258 patients with primary squamous cell carcinoma of the thoracic oesophagus between February 1981 and December 1999, 160 underwent three-field oesophagectomy with a curative intent. Clinicopathologic characteristics of those 160 patients were retrospectively investigated according to the number of metastatic lymph nodes. RESULTS Seventy-eight patients had no lymph node metastases and 82 (51.3%) had lymph node metastases; 51 [31.9%)] had between 1 and 4 positive lymph nodes, and 31 (19.4%) had > or =5. The number of metastatic lymph nodes was significantly correlated with tumour size, macroscopic classification, histological differentiation, pT, pN, and vessel invasions. Multivariate analysis showed that lymph vessel invasion (relative risk 12.6), histological differentiation (relative risk 4.2), and tumour size (relative risk 3.8) were independent factors correlated with number of metastatic lymph nodes. The number of metastatic lymph nodes was also well correlated with the Japanese nodal level and TNM stage, respectively (p<0.001). The 5-year disease-specific survival rate according to the number of positive lymph nodes was 90% for patients without lymph node metastases, 52.2% with 1-4, and 28.9% with > or =5, respectively, p<0. 0001; 0 vs 1-4, p<0.05; 1-4 vs > or =5). CONCLUSION The number of positive lymph nodes is well correlated with tumour progression and provides a useful prognostic indicator after oesophagectomy for oesophageal cancer.
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Yoshimoto K, Kato B, Ueda S, Noritake K, Sakai K, Shibata M, Hori M, Kawano H, Takeuchi Y, Wakabayashi Y, Yasuhara M. Dopamine and serotonin uptake inhibitors on the release of dopamine and serotonin in the nucleus accumbens of young and aged rats. Mech Ageing Dev 2001; 122:1707-21. [PMID: 11557275 DOI: 10.1016/s0047-6374(01)00292-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Nucleus accumbens (ACC) of young (4 months old) and aged (24 months old) Wistar rats were perfused with dopamine (DA) uptake blocker, cocaine, or the serotonin (5-HT) selective reuptake inhibitor, fluoxetine, through the microdialysis probe membrane, used to assess the dopamine transporter (DAT) or serotonin transporter (SERT) modulation. The basal extracellular DA release in the ACC was significantly lower in aged rats than young rats. Analysis of DA and 5-HT concentrations in the ACC with increased positive GFAP revealed that DA and DOPAC levels of aged rats were decreased to 55 and 60% of those in young rats, respectively. After co-perfusion with cocaine, both DA and 5-HT releases in the ACC were increased in the young and aged groups. However, the magnitude of the increased DA release was lower in aged rats than young rats. Co-perfusion with fluoxetine showed lower magnitude of the increased DA release in aged rats. It appears that the DAT and SERT system responds initially to ACC cell loss with age, and that especially ACC DAT in the aged rat is more degenerative compared with the young rats. These findings suggest that the serotonergic system with SERT in the remaining ACC neurons show an early adaptive response and resistance to the normal aging and maintain the multiple regulatory system in the ACC despite neural loss since the dopaminergic neurons in the aged animals are vulnerable to aging.
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Miyamoto Y, Yoshida M, Takahashi W, Inadome A, Yono M, Seshita H, Murakami S, Ueda S. The effect of nitric oxide on acetylcholine release in the rabbit bladder. Eur J Pharmacol 2001; 428:59-67. [PMID: 11779038 DOI: 10.1016/s0014-2999(01)01277-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We evaluated the effects of nitric oxide (NO) on acetylcholine release and the contractile response induced by electrical field stimulation in rabbit bladder smooth muscles using a muscle bath and high performance liquid chromatography coupled with microdialysis. Electrical field stimulation (supramaximum voltage, pulse duration 0.5 ms, frequency 5 and 20 Hz) was applied to a smooth muscle strip isolated from rabbit bladder. With low-frequency (5 Hz) stimulation, pretreatment with Nomega-nitro-L-arginine (L-NNA) (100 microM) significantly increased electrical field stimulation-induced acetylcholine release and contractile response, which were reduced by the addition of L-arginine. Pretreatment with sodium nitroprusside in the absence or presence of L-NNA significantly decreased electrical field stimulation-induced acetylcholine release and contractile response. In contrast, with high frequency (20 Hz) stimulation, pretreatment with L-NNA and sodium nitroprusside had no significant effect on either contractile response or acetylcholine release. Pretreatment with sodium nitroprusside caused no significant changes in carbachol and ATP-induced contractile responses. Sodium nitroprusside and L-NNA had no significant effects on the atropine-resistant part of the contraction induced by electrical field stimulation in rabbit bladder smooth muscles. The results suggest that there is a NO-mediated mechanism inhibiting acetylcholine release from cholinergic nerve endings in rabbit bladder, which may contribute to bladder function.
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Yamagishi T, Leite J, Ueda S, Yamaguchi F, Suwa Y. Simultaneous removal of phenol and ammonia by an activated sludge process with cross-flow filtration. WATER RESEARCH 2001; 35:3089-3096. [PMID: 11487105 DOI: 10.1016/s0043-1354(01)00032-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Attempts were made for removing ammonia from synthetic wastewater under the presence of phenol, which is inhibitory to nitrification, by using a single-stage activated sludge process with cross-flow filtration. Activated sludge biomass which had been acclimated with phenol for over 15 years was used for the inoculum, and synthetic wastewater was continuously supplied to the process retaining biomass at 8000 mg VSS l(-1). Phenol was completely removed, and ammonia was simultaneously nitrified to nitrate; nitrification rate reached 200 mg N l(-1) d(-1) when phenol was removed at a rate up to 300 mg l(-1) d(-1). It was observed that 0-13% of the ammonia was removed via denitrification. Intermittent aeration enhanced the denitrification rate to 160 mg N l(-1) d(-1) by utilizing phenol. and approximately 24% of the denitrified nitrogen was recovered as nitrous oxide. Methanol, which is the most commonly used electron donor in conventional nitrogen removal processes, did not enhance the denitrification rate of the phenol-acclimated activated sludge used in this study, however phenol did. The results suggest that this process potentially works as a space- and energy-saving nitrogen removal process by utilizing substances inhibitory to nitrifiers as electron donors for denitrification.
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Yamamoto A, Iwata A, Tuchiya K, Katsumata A, Oishi K, Saito T, Tsujimoto H, Hasegawa A, Ueda S. Molecular cloning and expression of the cDNA encoding feline granulocyte colony-stimulating factor. Gene 2001; 274:263-9. [PMID: 11675019 DOI: 10.1016/s0378-1119(01)00575-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Both genomic DNA and cDNA of the feline granulocyte colony-stimulating factor (G-CSF) gene were cloned from CRFK cells. Southern blot analysis showed that the haploid genome contains a single copy of the G-CSF gene. The RT-PCR analysis of several feline cell lines revealed expression of G-CSF mRNA in response to lipopolysaccharide stimulation. Sequence analysis of genomic and cDNA clones indicated that the intron-exon junction structure is conserved between the human and the feline G-CSF genes. The G-CSF coding region encodes a predicted protein of 195 amino acids including a signal sequence of 21 amino acids. The feline G-CSF amino acid sequence shares a high degree of identity with the canine (90.8%), human (87.4%), ovine (83.9%), bovine (82.8%), porcine (80.5%), murine (70.7%) and rat (66.8%) G-CSF. The feline G-CSF expressed in insect cells using recombinant baculovirus vector was biologically active as measured in a proliferation assay using NFS-60 cells and an induction assay of leukocytes in cats.
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Isoda M, Ueda S, Imayama S, Tsukahara K. New formulation of chemical peeling agent: histological evaluation in sun-damaged skin model in hairless mice. J Dermatol Sci 2001; 27 Suppl 1:S60-7. [PMID: 11514126 DOI: 10.1016/s0923-1811(01)00111-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND chemical peelings injure the superficial skin, which is then restored by healing of the wound. OBJECTIVES to document the acute and chronic histological changes produced by applying chemical peeling agents used clinically to the UVB-irradiated skin of hairless mice, which served as a model of sun-damaged skin. DESIGN three chemical peeling agents, 30% salicylic acid, dissolved in macrogol (a new formulation), 35% trichloroacetic acid (TCA) dissolved in distilled water and 20% glycolic acid dissolved in glycerin were applied to the backs of UVB-irradiated hairless mice. Untreated, irradiated areas of skin served as controls. Specimens were evaluated histologically at 3, 14, 28, and 70 days. RESULTS chronic UVB irradiation produced an irregular hypertrophy of the epidermis. The treated areas of irradiated skin recovered by day 70. At 28 days, all skin specimens treated with chemical peeling agents exhibited a unique connective tissue layer composed of fine collagen fibers beneath the epidermis. While 35% TCA produced severe tissue damage marked by inflammation up to day 14, no inflammatory infiltrates were seen with 30% salicylic acid in macrogol at 70 days. CONCLUSIONS chemical peeling with 30% salicylic acid dissolved in macrogol led to reorganization of the epidermis and a rebuilding of the superficial dermal connective tissue important in reducing wrinkles, and without evidence of inflammatory infiltrates in an animal model of sun-damaged skin. Findings suggest a possible clinical benefit.
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Yamauchi H, Hirata I, Sasaki S, Egashira Y, Hamamoto N, Murano M, Toshina K, Ueda S, Maemura K, Katsu K. Ileal carcinoid tumor with a rose-shaped appearance by dye spraying: diagnosis at colonoscopy. Gastrointest Endosc 2001; 54:267-8. [PMID: 11474412 DOI: 10.1067/mge.2001.116325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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