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Ueno Y, Ohba H, Yamazaki Y, Tokunaga F, Narita K, Hariyama T. Seasonal variation of chromophore composition in the eye of the Japanese dace, Tribolodon hakonensis. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2005; 191:1137-42. [PMID: 16082557 DOI: 10.1007/s00359-005-0037-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Revised: 06/29/2005] [Accepted: 07/02/2005] [Indexed: 10/25/2022]
Abstract
The relationship between seasonal variation and the effect of several different environmental factors on chromophore composition was investigated in the eye of the Japanese dace, Tribolodon hakonensis which lives either in rivers or in the sea. Eyes obtained from river and sea populations had both retinal (A1) and 3,4-didehydroretinal (A2) all through the year but the ratio of these chromophores showed seasonal variation the relative amount of A2 was higher in winter and lower in summer. Besides seasonal variation, A2 showed marked differences depending on habitat: the highest proportion of A2 was 67% in January and the lowest 13% in July, in the river population, whereas in the sea population the highest and the lowest values were only 30 and 6%, respectively, during the same months. The seasonal variation in gonadosomatic index showed no correlation to variations in A2 proportion, and the maximum difference in water temperature between summer and winter was ca. 15 degrees C for both habitats. Because spectral conditions at the locations of capture of both river and sea populations were similar, we conclude that Japanese dace eyes are affected by exogenous factors related to differences between freshwater and seawater environments.
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Kobayashi K, Ishii M, Shiina M, Ueno Y, Kondo Y, Kanno A, Miyazaki Y, Yamamoto T, Kobayashi T, Niitsuma H, Kikumoto Y, Takizawa H, Shimosegawa T. Interferon-gamma is produced by CD8 T cells in response to HLA-A24-restricted hepatitis C virus epitopes after sustained virus loss. Clin Exp Immunol 2005; 141:81-8. [PMID: 15958073 PMCID: PMC1809409 DOI: 10.1111/j.1365-2249.2005.02018.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2005] [Indexed: 11/29/2022] Open
Abstract
Differences in cytotoxic T lymphocyte activity in hepatitis C virus infection may account for the outcome of interferon monotherapy. To investigate this hypothesis, we analysed the response of peripheral CD8(+) T cells that recognized epitopes presented by HLA-A*2402. We synthesized HLA/beta2-microglobulin/peptide complexes using two epitopes. Production of interferon-gamma by CD8(+) T cells in response to plastic-bound monomeric HLA/peptide complex was observed frequently in sustained virus responders (SVR) (n = 13) against all the peptides, NS31296-1304 (the percentage of responding patients, 61.5%) and core 129-137 (53.8%), while no interferon-gamma production was observed in non-responders (NR) (n = 13) for any of the peptides. Tetramer-staining showed the presence of CD8(+) T cells specific for all the peptides except NS31296-1304 in two SVR at the end of interferon monotherapy, although hardly any such cells were found in four NR. Specific killing was observed against peptides NS31296-1304 (3/4) and core 129-137 (1/4) in sustained responders but none in non-responders. These results suggest that the responses of cytotoxic T lymphocytes (CTLs) were induced during interferon therapy in these patients and that interferon-gamma production by CD8(+) T lymphocytes against HCV NS31296-1304 and core 129-137 are well maintained in patients with SVR compared with those with NR. These findings emphasize the importance of the CD8(+) T cell response in controlling HCV infection.
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Ueno Y, Sakurai H, Matsuo M, Choo MK, Koizumi K, Saiki I. Selective inhibition of TNF-alpha-induced activation of mitogen-activated protein kinases and metastatic activities by gefitinib. Br J Cancer 2005; 92:1690-5. [PMID: 15841081 PMCID: PMC2362047 DOI: 10.1038/sj.bjc.6602548] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We have reported that the selective epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, gefitinib (‘Iressa’, ZD1839), suppressed intrahepatic metastasis of hepatocellular carcinoma CBO140C12 cells. In this study, we focused on the tumour necrosis factor-α (TNF-α) signalling pathways. Real-time reverse transcription–polymerase chain reaction showed that TNF-α mRNA was expressed in large quantities in the implanted tumour. Gefitinib inhibited EGF- but not hepatocyte growth factor (HGF)-induced activation of mitogen-activated protein kinase (MAPK) cascades, suggesting selectivity of the inhibitor. However, gefitinib inhibited the TNF-α-induced activation of MAPKs and Akt. In addition, TNF-α-induced metastatic properties including adhesion to fibronectin, mRNA expression of integrin αv, production of matrix metalloproteinase-9 and invasion were inhibited by gefitinib without affecting cell proliferation. Furthermore, the TNF-α-induced responses except for NF-κB activation were blocked by metalloprotease inhibitors, suggesting that gefitinib inhibited the transactivation of EGFR induced by TNF-α. These results suggest that the TNF-α signalling pathway is a possible target of gefitinib in suppressing the intrahepatic metastasis of hepatocellular carcinoma.
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Ono EYS, Fungaro MHP, Sofia SH, Figueira ELZ, Gerage AC, Ichinoe M, Sugiura Y, Ueno Y, Hirooka EY. Trends of fumonisin contamination and animal intoxication through monitoring 1991 to 1997 corn crop in the State of Paraná, Brazil. Mycopathologia 2005; 158:451-5. [PMID: 15630554 DOI: 10.1007/s11046-004-3863-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2004] [Accepted: 09/24/2004] [Indexed: 11/24/2022]
Abstract
Eleven feed samples associated with six animal (horse and poultry) intoxication outbreaks (1991) in the state of Paraná, Brazil, were evaluated for fungal and fumonisin contamination. In order to estimate the trend of livestock intoxication, fumonisin contamination was monitored in corn produced both at the commercial level (1991, 1995 crop), and in an experimental field at a local Agronomy Institute (1997 crop). The total mould count in the feed samples ranged from 2.9 x 10(3) to 1.9 x 10(7) CFU/g, with Fusarium verticillioides as the predominant species, at a high count of 2.4 x 10(4)-6.5 x 10(5) CFU/g. Fumonisins (FB1 + FB2) were detected in all corn-based feed samples at levels ranging from 2.89 to 14.54 microg/g. All 27 Northern corn samples (1991 crop) were contaminated with fumonisins at levels ranging from 2.32 to 16.64 microg/g. Twenty-six (96.3%) out of 27 corn samples from the Central-Southern region (1995 crop) were positive for fumonisins (FB1+FB2), with the range of 0.07-3.66 microg/g, while all 37 Northern samples (1995 crop) were contaminated with fumonisins ranging from 0.57 to 9.97 microg/g. Twenty-one out of 37 corn samples from the Northern region (1997 crop) were positive for fumonisins, but at low level (range of 0.05-2.67 microg/g). The results showed a decreasing trend in fumonisin contamination over the years. Nowadays animal intoxication outbreaks rarely occur in this State, as both animal producers and feed industries have become conscious about monitoring of corn and other raw materials at the quality control level.
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Ueno Y, Futagawa H, Takagi Y, Ueno A, Mizushima Y. Drug-incorporating calcium carbonate nanoparticles for a new delivery system. J Control Release 2005; 103:93-8. [PMID: 15710503 DOI: 10.1016/j.jconrel.2004.11.015] [Citation(s) in RCA: 150] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2004] [Accepted: 11/09/2004] [Indexed: 11/21/2022]
Abstract
We devised a simple method for incorporating drugs into solid calcium carbonate nanoparticles (nano-CaCO3). The size of nano-CaCO3 was controlled by mixing speed. Washing the nanoparticles released little incorporated drug but much drug that was adsorbed on the surface. In an in vitro releasing test, granulocyte colony-stimulating factor incorporated in nano-CaCO3 was chemically stable and released very slowly. Subcutaneous injection of nano-CaCO3 incorporating betamethasone phosphate (BP) resulted in a smaller initial increase in plasma concentration and a subsequent sustained release in compared with betamethasone phosphate solution. Nano-CaCO3 may be useful to deliver hydrophilic drugs and bioactive proteins.
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Ichiyama T, Ueno Y, Hasegawa M, Ishikawa Y, Matsubara T, Furukawa S. Intravenous immunoglobulin does not increase Fc RIIB expression on monocytes/macrophages during acute Kawasaki disease. Rheumatology (Oxford) 2005; 44:314-7. [PMID: 15572393 DOI: 10.1093/rheumatology/keh488] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Intravenous immunoglobulin (IVIG) therapy has been reported to be effective for reducing the incidence of coronary artery lesions in Kawasaki disease (KD), an acute febrile vasculitis of unknown aetiology. Regarding the mechanism of IVIG in immune thrombocytopenic purpura (ITP), it has been reported that IVIG increases the expression of the inhibitory Fc receptor, FcgammaRIIB (CD32B), on splenic macrophages in a murine ITP model. Regarding the mechanism of IVIG during acute KD, we investigated whether or not IVIG increases the expression of FcgammaRIIB in peripheral blood CD14+ monocytes/macrophages. METHODS The expression of FcgammaRIIB in peripheral blood CD14+ monocytes/macrophages was determined before and after IVIG therapy in 13 patients with acute KD by flow cytometry. RESULTS The percentage of CD14+ CD32B+ monocytes/macrophages among peripheral blood mononuclear cells, the absolute number of CD14+ CD32B+ monocytes/macrophages and the percentage of CD14+ CD32B+ monocytes/macrophages among CD14+ monocytes/macrophages in patients with acute KD before IVIG therapy were significantly increased compared with those after IVIG therapy and in controls. CD14+ CD32B+ monocytes/macrophages decreased to within the normal range soon after IVIG therapy. CONCLUSIONS IVIG therapy in patients with KD did not increase the expression of FcgammaRIIB in peripheral blood CD14+ monocytes/macrophages during the acute stage.
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Fukumura F, Sese A, Ueno Y, Imoto Y, Sakamoto M, Ochiai Y, Iwai T, Joho K. [Two-stage repair of the transposition of great arteries with interruption/coarctation of the aorta]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2005; 58:66-70. [PMID: 15678969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
We report on 10 patients who underwent two-stage repair of transposition of the great arteries (TGA) with interruption (IAA) or coarctation (CoA) of the aorta. First, an operation for aortic arch reconstruction was performed: Blalock-Park with pulmonary artery banding (PAB) for IAA (5 patients), subclavian flap with PAB for CoA (4 patients) and end-to-end anastomosis without PAB (1 patient). All survived the first operation and had no significant pressure gradient with good growth of the ascending aorta, except for the 1 case without PAB. Half of the 8 patients who underwent PAB developed migration of the PAB. The arterial switch operation (ASO) was performed 0.7-12.6 (5.6+/-4.7) months after the first surgery. One patient with an abnormal coronary artery tract was lost after ASO. Five developed pulmonary artery stenosis and 1 developed supra-aortic stenosis late after ASO. Two patients need reoperation, 1 for supra-aortic stenosis, and the other for reCoA. Two-stage repair for TGA with IAA/CoA is still a useful method with a good operative result. However, strict follow-up is necessary because of the high frequency of late morbidity.
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Kondo Y, Kobayashi K, Asabe S, Shiina M, Niitsuma H, Ueno Y, Kobayashi T, Shimosegawa T. Vigorous response of cytotoxic T lymphocytes associated with systemic activation of CD8 T lymphocytes in fulminant hepatitis B. Liver Int 2004; 24:561-7. [PMID: 15566505 DOI: 10.1111/j.1478-3231.2004.0982.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Fulminant hepatitis is a clinical syndrome characterized by sudden and severe liver dysfunction. METHODS We analyzed two patients with a superacute form of fulminant hepatitis B and compared findings with those of four patients with acute self-limited hepatitis B, two patients with acute exacerbation of chronic hepatitis B and four healthy individuals. RESULTS In fulminant hepatitis, an increased population of human leukocyte antigen (HLA)-DR(+) CD8(+) lymphocytes was observed in peripheral blood by flow cytometry, which was accompanied by the presence of HLA-DR(hi) lymphocytes. The phenotype of CD8(+) T lymphocytes from patients with fulminant hepatitis was mostly that of the effector T lymphocytes in peripheral blood, whereas lymphocytes with CD45RA(-) CCR7(-) phenotype dominated in the liver of these patients. A larger population of hepatitis B virus (HBV)-specific cytotoxic T lymphocytes (CTLs) appeared in peripheral circulation of the fulminant hepatitis patients compared with that in a patient with acute hepatitis. HBV-specific CTLs were highly concentrated in the liver, although epitopes recognized by these CTLs in the peripheral blood and in the liver were similar. Peripheral CTLs were mostly functional as indicated by intracellular perforin and interferon-gamma. CONCLUSIONS These results suggest the presence of vigorous activation of CD8(+) T cells in vivo in fulminant hepatitis and the necessity of extensive therapy in patients with this disease.
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Okubo K, Ueno Y, Isobe J, Kato T. Emergent pneumonectomy for hemoptysis in a patient with previous thoracoplasty. THE JOURNAL OF CARDIOVASCULAR SURGERY 2004; 45:515-7. [PMID: 15736576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Hemoptysis is a life-threatening episode of respiratory disease. By means of every possible treatment, hemostasis should be obtained to secure the airway as well as to prevent blood loss. We describe an emergent pneumonectomy for massive hemoptysis from destroyed lung in a patient with previous thoracoplasty. After prolonged ventilation support postoperatively, the patient with compromised lung function recovered well.
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Ichiyama T, Ueno Y, Isumi H, Niimi A, Matsubara T, Furukawa S. An immunoglobulin agent (IVIG) inhibits NF-kappaB activation in cultured endothelial cells of coronary arteries in vitro. Inflamm Res 2004; 53:253-6. [PMID: 15167972 DOI: 10.1007/s00011-004-1255-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2003] [Accepted: 01/07/2004] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE Kawasaki disease (KD) is an acute febrile vasculitis of unknown etiology that may lead to cardiovascular disorders. High-dose intravenous immunoglobulin (IVIG) therapy is well established as a standard therapy for KD. Tumor necrosis factor-alpha (TNF-alpha) is responsible for the pathogenesis of acute KD. We examined whether or not IVIG inhibits TNF-alpha-induced activation of transcription factor NF-kappaB, a factor that is essential for the expression of proinflammatory cytokines, in human coronary artery endothelial cells (CAEC). METHODS The inhibitory effect of IVIG on NF-kappaB activation induced by TNF-alpha was evaluated by Western blot analysis and ELISA. Moreover, the inhibitory effects of IVIG on IkappaBalpha degradation, interleukin-6 (IL-6) production, and E-selectin expression induced by TNF-alpha were evaluated by Western blot analysis, ELISA, and flow cytometry, respectively. RESULTS Western blot analysis and ELISA demonstrated that IVIG inhibits NF-kappaB activation induced by TNF-alpha in CAEC. Moreover, IVIG inhibited IkappaBalpha degradation, IL-6 production, and E-selectin expression induced by TNF-alpha in CAEC. CONCLUSION The data suggest that IVIG inhibits NF-kappaB activation induced by TNF-alpha in CAEC, thereby possibly modulating IL-6 production and E-selectin expression.
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Kamiya H, Murata-Kamiya N, Karino N, Ueno Y, Matsuda A, Kasai H. Mutagenicity of 5-formyluracil in mammalian cells. NUCLEIC ACIDS SYMPOSIUM SERIES 2003:81-2. [PMID: 12903278 DOI: 10.1093/nass/44.1.81] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
5-Formyluracil, a major oxidized form of thymine, was incorporated into a predetermined site of one of the leading and lagging template strands of a double-stranded vector, and the DNA replication efficiency and the mutation frequency of 5-formyluracil in simian COS-7 cells were investigated. 5-Formyluracil did not block DNA replication and was weakly mutagenic in simian cells. 5-Formyluracil primarily elicited base substitutions at the modified positions.
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Hossain MT, Hikima T, Tsunoda M, Chatake T, Ueno Y, Matsuda A, Takénaka A. X-ray analyses of two DNA dodecamers containing N4-methoxy-cytosine paired with adenine or guanine. NUCLEIC ACIDS SYMPOSIUM SERIES 2003:239-40. [PMID: 12903357 DOI: 10.1093/nass/44.1.239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
To investigate mismatch of base-pairings in relation to mutagenesis by oxyamines, crystal structures of two DNA dodecamers with the sequence d(CGCZAA TTmo4CGCG) (Z = A or G), containing N4-methoxy-cytosine (mo4C), have been determined by X-ray analysis. These dodecamers essentially form right-handed B-form duplexes, respectively. In the dodecamer with Z = A, the two mo4C residues are adapted in imino form with the anti methoxyl group to form pairs with A on the opposite strand in a manner of Watson-Crick fashion. While in the dodecamer with Z = G, one mo4C in amino form with the anti methoxyl group forms a normal Watson-Crick pair with G, but the other one in imino form with syn methoxyl conformation wobbles with G. Based on these results, possible mutation mechanism has been proposed.
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Okamoto T, Okubo K, Isobe J, Ueno Y. [Pulmonary thromboembolism after videothoracoscopic excision of a mediastinal tumor; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2003; 56:889-92. [PMID: 13677929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
Abstract
We experienced a case of pulmonary thromboembolism after videothoracoscopic excision of a mediastinal tumor. A 57-year-old woman underwent videothoracoscopic excision of an upper mediastinal tumor, which was pathologically diagnosed as neurilemmoma. On the first postoperative day, she suddenly suffered from fatigue and blood-gas analysis showed hypoxemia. No abnormal shadow was seen on chest X-ray. Lung perfusion scintigram showed multiple embolism. She was treated with anticoagulants and recovered well. We should pay attention to the possibility of pulmonary thromboembolism after video-assisted thoracic surgery as well as thoracotomy, especially when patients have risk factors for pulmonary thromboembolism.
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Tsunoda M, Sakaue T, Naito S, Sunami T, Karino N, Ueno Y, Matsuda A, Takénaka A. X-ray analyses of DNA dodecamers containing 2'-deoxy-5-formyluridine. NUCLEIC ACIDS RESEARCH. SUPPLEMENT (2001) 2003:279-80. [PMID: 12836373 DOI: 10.1093/nass/1.1.279] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
It is known that formylation of thymine base induces purine transition in DNA replication. In order to establish the structural basis for such mutagenesis, crystal structures of two kinds of DNA dodecamers d(CGCGRATf5UCGCG) with f5U = 2'-deoxy-5-formyluridine and R = A or G have been determined. The f5U residues form a Watson-Crick-type pair with A and two types of pairs (wobble and reversed wobble) with G, the latter being the first example. Structural modeling suggests that the DNA polymerase can accept the reversed wobble pair with G, as well as the Watson-Crick pair with A.
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Kozaki A, Zulfiqar F, Ueno Y, Kitade Y. Synthesis of carbocyclic nucleosides as potential antiviral agents. NUCLEIC ACIDS RESEARCH. SUPPLEMENT (2001) 2003:59-60. [PMID: 12836263 DOI: 10.1093/nass/1.1.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Treatment of 1-[(1'R,2'S,3'S,4'S)-4'-methanesulfonyl-2',3'-O- isopropylidenedioxycyclopentan-1'-yl]-1-H-uracil with LiN3 gave 1-[(1'R,2'S,3'R)-2',3'-O-isopropylidenedioxy-4'- cyclopenten-1'-yl]-1-H-uracil. When KOBut was added instead of LiN3, 1-[(1'R,2'S)-2',3'-O- isopropylidenedioxy-3'-cyclopenten-1'-yl]-1-H-uracil was produced. An analogous treatment of the methanesulfonyl derivative of thymine was also carried out.
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Ueno Y, Mikawa M, Hoshika S, Takeba M, Kitade Y, Matsuda A. Alternate-strand triple-helix formation by the 3'-3'-linked oligodeoxynucleotides with the intercalators at the junction point. NUCLEIC ACIDS RESEARCH. SUPPLEMENT (2001) 2003:11-2. [PMID: 12836239 DOI: 10.1093/nass/1.1.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
3'-3'-Linked oligodeoxynucleotides (ODNs) with the anthraquinonyl group at the junction point were synthesized on a DNA synthesizer using a controlled pore glass (CPG), which has pentaerythritol carrying the intercalator at one of the four hydroxymethyl groups. Stability of the triplexes with the target duplexes was studied by thermal denaturation. The 3'-3'-linked ODNs with the anthraquinonyl group enhanced the thermal stability of the triplexes when compared with those without the intercalator and the unmodified nonamer. The inhibitory activity of the 3'-3'-linked ODNs against the cleavage of the target DNA by the restriction enzyme Hind III was tested. It was found that the 3'-3'-linked ODN with the anthraquinonyl group at the junction point inhibited the cleavage by the enzyme more effectively than the nonamer and the 3'-3'-linked ODN without the intercalator.
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Shuto S, Kudoh T, Fukuoka M, Ueno Y, Matsuda A. Synthesis and biological activity of cyclic ADP-carbocyclic-ribose and its analogs as stable mimics of Ca(2+)-mobilizing second messenger cyclic ADP-ribose. NUCLEIC ACIDS RESEARCH. SUPPLEMENT (2001) 2003:5-6. [PMID: 12836236 DOI: 10.1093/nass/1.1.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Cyclic ADP-carbocyclic-ribose (cADPcR, 2) and its several analogs were designed and synthesized as stable mimics of Ca(2+)-mobilizing second messenger cyclic ADP-ribose (cADPR, 1). cADPcR was stable and actually caused a significant release of Ca(2+) stronger than that of cADPR.
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Ono H, Shirakawa O, Kitamura N, Hashimoto T, Nishiguchi N, Nishimura A, Nushida H, Ueno Y, Maeda K. Tryptophan hydroxylase immunoreactivity is altered by the genetic variation in postmortem brain samples of both suicide victims and controls. Mol Psychiatry 2003; 7:1127-32. [PMID: 12476329 DOI: 10.1038/sj.mp.4001150] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2001] [Revised: 02/02/2002] [Accepted: 03/15/2002] [Indexed: 11/08/2022]
Abstract
Several lines of evidence suggest that a partly genetically controlled serotonergic dysfunction is involved in the biological pathogenesis of suicide. In this study, we measured tryptophan hydroxylase (TPH) immunoreactivity as a pre-synaptic marker, and serotonin receptor 2A (5HT2A receptor) density as a post-synaptic marker in the serotonergic system in 10 postmortem brains of suicide victims. We also examined whether TPH gene polymorphisms (A218C and A-6526G polymorphisms) could affect TPH immunoreactivity and 5HT2A receptor gene polymorphism (A-1438G polymorphism) could affect 5HT2A receptor density in 28 postmortem brain samples. No significant differences were found in TPH immunoreactivity or 5HT2A receptor density between suicide victims and controls. The AA genotype of the A218C polymorphism of the TPH gene showed higher TPH immunoreactivity along with lower 5HT2A receptor density than did any other genotypes in the postmortem brains of both suicide victims and controls. Our findings suggest that the A218C polymorphism of the TPH gene can be expected to provide new insights not only for neurobiological studies of suicide, but also for research into the behavioral characteristics that may be associated with serotonergic dysfunction.
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Ueno Y. Prediction of interindividual differences in radiosensitivity in mammals. LIFE SCIENCES AND SPACE RESEARCH 2003; 7:201-6. [PMID: 12197539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Prediction of individual radiosensitivity of mammals is of interest to radiobiology on the one hand and it is also important to the clinical use of radiation. The author has reported that there is a relationship between radiosensitivity in individual animals and its homeostatic activity that allows predicting individual radiosensitivity. In the present report, a phenomenon of metabolism was used to measure the homeostatic activity of an individual mouse DBA strain, 90 days old; that is, the metabolic rate was calculated from daily diet or water consumption, and body weight. Each mouse fasted completely for one day and the ratio between metabolic rates just before and just after the fast (value after fast/value before fast) was calculated to use as the index of homeostatic activity of each mouse. One week after fasting, the mice were exposed to X-rays of 500 R and the ratio of metabolic rates just before and just after exposure was calculated again. Ten days after exposure the mice were sacrificed and the spleens were fixed in Bouin's solution. After fixing, the splenic weight was measured and an endogenous spleen colony count (more than 1 mm diameter) was made, which was one response to radiation damage to the hematopoietic system. The results, summarized from several repeated experiments are given in the table below: [table: see text].
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Ono EYS, Sasaki EY, Hashimoto EH, Hara LN, Corrêa B, Itano EN, Sugiura T, Ueno Y, Hirooka EY. Post-harvest storage of corn: effect of beginning moisture content on mycoflora and fumonisin contamination. FOOD ADDITIVES AND CONTAMINANTS 2002; 19:1081-90. [PMID: 12456280 DOI: 10.1080/02652030210146828] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The effect of storage on mycoflora profile was monitored bimonthly in 36 corn (Zea mays L.) samples, dividing the same sample into groups dried to 11 and 14% moisture content (1008 analysis). These groups were further subdivided based on the initial total count (moulds and yeasts) up to 10(4) CFU g(-1) (12 samples, range 1.6 x 10(4) to 9.0 x 10(4), mean 3.8 x 10(4) CFU g(-1)) and up to 10(5) CFU g(-1) (24 samples, range 1.0 x 10(5) to 5.0 x 10(5), mean 2.7 x 10(5) CFU g(-1)). In the corn group dried to 11%, the fumonisin content was analysed at the initial stage (freshly harvested) and at the end of 12-month storage. Fusarium spp. and Penicillium spp. prevailed at the freshly harvested stage (100%), maintaining this profile throughout 12 months, in corn dried to both 11 and 14%. Cladosporium spp., Aspergillus spp. and Phoma spp. were also detected at lower frequencies during the storage. Fusarium spp. and the total fungal colony count during 12-month storage carried out with samples dried to 11 or 14% moisture content were statistically evaluated using ANOVA for randomized complete block design. The correlation between storage time and Fusarium spp. and total fungal colony count data was analysed by Pearson's correlation test. There was no difference in Fusarium spp. and total counts in the 10(4) CFU g(-1) initial total count group throughout the storage time (p < 0.05). There was a negative correlation between fungal population and storage time (p < 0.05) in the 10(5) CFU g(-1) initial total count group. Fumonisins were detected in all freshly harvested corn, at a mean concentration of 9.9 +/- 6.0 micro g g(-1) (range 0.74-22.6 micro g g(-)1). These values did not change in the 12-month stored corn (mean of 9.9 +/- 5.8 micro g g(-1), range 0.81-23.7 micro g g(-1)). These post harvest data indicated the importance of moisture content at the crop harvesting/predrying stage to control fungal growth and further fumonisin production.
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Okamoto T, Okubo K, Miyamoto N, Kurahashi Y, Isobe J, Ueno Y, Katoh T. [Concomitant lobectomy for lung cancer under intraaortic balloon pumping and coronary bypass grafting]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2002; 55:1014-7. [PMID: 12428334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
A 71-year-old man was admitted because of an abnormal shadow on the chest X-ray film. Chest computed tomography (CT) revealed a tumor in the right upper lobe. The diagnosis of lung cancer was made by transbronchial lung biopsy. He had suffered an infarction of the inferior myocardial wall at the age of 55 years. Preoperative coronary angiography revealed total occlusion of segment 1, 75% stenosis of segments 5 and 6, and 90% stenosis of segment 13. Since these coronary lesions could cause perioperative and postoperative myocardial infarction, the patient was scheduled to undergo surgery of both the heart and lung in a one-stage operation. Under intraaortic balloon pumping (IABP), we performed a right upper lobectomy of the lung, and coronary artery bypass grafting with cardiopulmonary bypass through median sternotomy. During the lobectomy and first postoperative day, a stable circulation was achieved with IABP. The postoperative course was uneventful. At present, that is 33 months after the operation, the patient presents no sighs of recurrence of lung cancer and has not suffered any anginal attack during follow-up. Lung cancer and coronary artery disease can be treated simultaneously by this procedure.
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97
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Kai Y, Matsumura H, Shirakata S, Inoue T, Yoshinaga T, Ueno Y, Izui K. Crystal structure of phosphoenolpyruvate carboxylase: the reaction mechanism and regulation. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302089134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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98
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Ueno Y, Nakamura Y, Kinoshita M, Fujita T, Sakamoto T, Okamura H. Can coronary flow velocity reserve determined by transthoracic Doppler echocardiography predict the recovery of regional left ventricular function in patients with acute myocardial infarction? Heart 2002; 88:137-41. [PMID: 12117834 PMCID: PMC1767231 DOI: 10.1136/heart.88.2.137] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To determine whether the early assessment of coronary flow velocity reserve (CFVR) by transthoracic Doppler echocardiography (TTDE) can predict myocardial viability after revascularisation in patients with acute myocardial infarction. METHODS 29 patients with anterior acute myocardial infarction who were successfully treated by coronary angioplasty were studied. TTDE was used to record coronary flow velocities in the distal left anterior descending artery at rest and during hyperaemia induced by intravenous infusion of adenosine triphosphate. CFVR was calculated immediately and 24 hours after revascularisation and at discharge. Regional wall motion was analysed to calculate the anterior wall motion score index (A-WMSI) by two dimensional echocardiography before revascularisation and at discharge. RESULTS CFVR immediately and 24 hours after revascularisation correlated significantly with A-WMSI at discharge (r = -0.58, p < 0.001 and r = -0.80, p < 0.0001, respectively). CFVR 24 hours after revascularisation was a better predictor of recovery of regional left ventricular function than CFVR immediately after revascularisation. The optimal cut off ratio for predicting viable myocardium was 1.5 for CFVR 24 hours after revascularisation (sensitivity = 94%, specificity = 91%). CONCLUSIONS CFVR by TTDE was useful for predicting the recovery of left ventricular function after revascularisation in patients with acute myocardial infarction
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Ishikawa N, Sato H, Tsunezuka Y, Hiranuma C, Ueno Y, Kurumaya H. Pulmonary blastoma in a child: report of a case. Surg Today 2002; 31:705-7. [PMID: 11510607 DOI: 10.1007/s005950170074] [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: 11/25/2022]
Abstract
We describe herein the case of a 2-year-old girl found to have a pulmonary blastoma (PB). The child was admitted to our hospital with the chief complaints of coughing and left-sided chest pain. On admission, a chest X-ray revealed a large mass in the left lung, which measured 10cm in diameter. Computed tomography and magnetic resonance imaging showed a marginally and heterogeneously enhanced tumor filling the left hemithorax. Pathologic findings of the fine-needle aspiration were suggestive of neuroblastoma. Subsequently, a left pneumonectomy with lymph node dissection was performed and histopathological examination confirmed that the tumor was a PB (type III). After the definitive diagnosis was made the patient received combination chemotherapy, and no evidence of recurrence has been seen in the 5 months since surgery.
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Buim MR, Bracarense AP, Guimarães IG, Kawamura O, Ueno Y, Hirooka EY. Immunohistochemistry of fumonisin in poultry using avidin-biotin-peroxidase system. NATURAL TOXINS 2002; 7:279-82. [PMID: 11122519 DOI: 10.1002/1522-7189(199911/12)7:6<279::aid-nt74>3.0.co;2-v] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Using monoclonal anti-fumonisin B1 antibody (anti-FB1) and avidin-biotin-peroxidase system, liver and kidneys of broiler chicks were evaluated for the detection and distribution of fumonisins (FBs). One hundred and fifty micrograms of FB1 or culture extract of Fusarium moniliforme str. 113F containing 150 microg of FB1 and 4 microg of FB2 were administered into the vitelline sac of 1-day old, specific pathogen-free chicks. The animals were killed 24 h after injection, and renal and hepatic tissues submitted for immunohistochemical analysis. FBs were detected in the epithelial cells of convoluted distal and proximal tubules of the kidneys, as well as in the cytoplasm of hepatocytes. This novel immunohistochemical method developed is expected to be an efficient way for monitoring the target of the FB toxins in tissues.
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