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Ueno Y, Sasaki D, Fukui H, Haruta S, Ishii M, Igarashi Y. Changes in bacterial community during fermentative hydrogen and acid production from organic waste by thermophilic anaerobic microflora. J Appl Microbiol 2006; 101:331-43. [PMID: 16882140 DOI: 10.1111/j.1365-2672.2006.02939.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Changes in fermentation pattern during the treatment of organic wastes containing solid materials by thermophilic anaerobic microflora were investigated with respect to product formation and bacterial community structure during hydrogen production. METHODS AND RESULTS Anaerobic microflora enriched from sludge compost was cultivated using artificial garbage slurry in a continuous flow-stirred tank reactor. Product formation varied depending on pH and hydraulic retention time (HRT) applied. Community analysis by terminal restriction fragment length polymorphism and clone library analysis of polymerase chain reaction-amplified bacterial 16S rDNA indicated that difference in the fermentative product distribution could be caused by different populations of micro-organisms in the microflora. CONCLUSION Hydrogen fermentation with acetate/butyrate formation was optimized at <1.0 d HRT at pH 5.0 and 6.0. Thermoanaerobacterium thermosaccharolyticum was the dominant hydrogen-producing micro-organism. Conversely, unidentified organisms became dominant after 4.0 d HRT at pH 7.0 and 8.0, where relatively high-solubilization efficiency of solid materials was observed with no production of hydrogen. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report describing product formation in the fermentation of solid organic wastes by a mixed population of micro-organisms. Various fermentation patterns including hydrogen fermentation were characterized and evaluated from engineering and microbial aspects.
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Affiliation(s)
- Y Ueno
- Kajima Technical Research Institute, Tokyo, Japan
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Kudo K, Maeda H, Kawakubo T, Ootani Y, Funaki M, Fukui H. Relativistic calculation of nuclear magnetic shielding using normalized elimination of the small component. J Chem Phys 2006; 124:224106. [PMID: 16784262 DOI: 10.1063/1.2204606] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The normalized elimination of the small component (NESC) theory, recently proposed by Filatov and Cremer, is extended to include magnetic interactions and applied to the calculation of the nuclear magnetic shielding in HX (X=F, Cl, Br, I) systems. The NESC calculations are performed at the levels of the zeroth-order regular approximation (ZORA) and the second-order regular approximation (SORA). The calculations show that the NESC-ZORA results are very close to the NESC-SORA results, except for the shielding of the I nucleus. Both the NESC-ZORA and NESC-SORA calculations yield very similar results to the previously reported values obtained using the relativistic infinite-order two-component coupled Hartree-Fock method. The difference between NESC-ZORA and NESC-SORA results is significant for the shieldings of iodine.
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Affiliation(s)
- K Kudo
- Kitami Institute of Technology, 165 Koencho, Kitami 090-8507, Japan
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Kudo K, Fukui H. Erratum: “Calculation of nuclear magnetic shieldings using an analytically differentiated relativistic shielding formula” [J. Chem. Phys. 123, 114102 (2005)]. J Chem Phys 2006. [DOI: 10.1063/1.2199527] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fukui T, Nishio A, Okazaki K, Uza N, Ueno S, Kido M, Inoue S, Kitamura H, Kiriya K, Ohashi S, Asada M, Tamaki H, Matsuura M, Kawasaki K, Suzuki K, Uchida K, Fukui H, Nakase H, Watanabe N, Chiba T. Gastric mucosal hyperplasia via upregulation of gastrin induced by persistent activation of gastric innate immunity in major histocompatibility complex class II deficient mice. Gut 2006; 55:607-15. [PMID: 16322110 PMCID: PMC1856104 DOI: 10.1136/gut.2005.077917] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS Major histocompatibility complex class II deficient (Aalpha0/0) mice have decreased CD4+ T cells, making them immunologically similar to patients with acquired immunodeficiency syndrome (AIDS). Both patients with AIDS and Aalpha0/0 mice have hypertrophic gastric folds. To clarify the mechanism of gastric mucosal hyperplasia, we investigated the pathophysiology and the role of the innate immunity in the stomach of Aalpha0/0 mice. METHODS Stomachs from 1-6 month old Aalpha0/0 mice, kept under specific pathogen free conditions, were examined at 1 month intervals histologically and immunohistochemically. Gene expression of proinflammatory cytokines, Toll-like receptors (TLRs), cyclooxygenase (COX)-2, and myeloperoxidase (MPO) activity in the gastric mucosa was investigated. Serum gastrin levels and gastric acidity were measured. Bacterial culture of the stomach was performed. To clarify the roles of hypergastrinaemia in the gastric mucosa, a gastrin receptor antagonist (AG041R) was administered. RESULTS Aalpha0/0 mice had a diffusely thick corpus mucosa with infiltration of CD11b+ granulocytes and macrophages. Anti-Ki67 staining demonstrated expansion of the proliferating neck zone. Gene expression of interleukin 1beta, interferon gamma, TLR-2, TLR-4, and COX-2 were upregulated, and MPO activity was increased. Only a small amount of non-pathogenic bacteria was detected in the stomach. Serum gastrin levels and Reg-Ialpha positive cells in the gastric mucosa increased, despite normal gastric acidity. After treatment with AG041R, gastric mucosal thickness was significantly reduced. CONCLUSION Persistent activation of innate immunity in the stomach induced gastric mucosal hyperplasia through upregulation of gastrin synthesis in Aalpha0/0 mice, suggesting a pathophysiology similar to the gastric changes in patients with AIDS.
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Affiliation(s)
- T Fukui
- Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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55
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Affiliation(s)
- K Kudo
- Kitami Institute of Technology, 165 Koencho, Kitami 090-8507, Japan
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56
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Uenoyama Y, Seno H, Fukuda A, Sekikawa A, Nanakin A, Sawabu T, Kawada M, Kanda N, Suzuki K, Yada N, Fukui H, Chiba T. Hypoxia induced by benign intestinal epithelial cells is associated with cyclooxygenase-2 expression in stromal cells through AP-1-dependent pathway. Oncogene 2006; 25:3277-85. [PMID: 16407821 DOI: 10.1038/sj.onc.1209359] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cyclooxygenase-2 (COX-2) plays important roles in tumor development. Especially in the early-stage colorectal tumors, COX-2 expression is often observed in the tumor stroma. However, the mechanism regulating such stromal expression of COX-2 remains unknown. In the present study, we simulated the indirect interaction between epithelial cells and stromal cells in the process of colorectal tumor development using an in vitro co-culture model in which NIH3T3 fibroblasts were co-cultured with 'sparsely' or 'densely' populated intestinal epithelial cells, Intestine-407 as a model of premalignant or benign intestinal epithelial cells, and DLD-1 and Caco-2 as models of malignant epithelial cells. COX-2 expression in NIH3T3 fibroblasts was upregulated when co-cultured with the 'dense' epithelial cells regardless of their character. Interestingly, there was pericellular hypoxia in the vicinity of NIH3T3 fibroblasts when co-cultured with 'dense' epithelial cells, and the recovery of the partial pressure of oxygen level resulted in the reduction of enhanced COX-2 expression only in NIH3T3 fibroblasts co-cultured with 'dense' Intestine-407 cells. Furthermore, COX-2 expression was also reduced by the inhibition of transcription factor AP-1. Thus, pericellular hypoxia of the stromal cells caused by densely populated epithelial cells may be one of the potent COX-2 enhancers before completion of malignant transformation during intestinal tumor development.
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Affiliation(s)
- Y Uenoyama
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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57
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Yoshiji H, Kuriyama S, Noguchi R, Yoshii J, Ikenaka Y, Yanase K, Namisaki T, Kitade M, Uemura M, Masaki T, Fukui H. Angiopoietin 2 displays a vascular endothelial growth factor dependent synergistic effect in hepatocellular carcinoma development in mice. Gut 2005; 54:1768-75. [PMID: 16033879 PMCID: PMC1774778 DOI: 10.1136/gut.2005.067900] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Orchestration of two major classes of angiogenic factors-namely, vascular endothelial growth factor (VEGF) and angiopoietin 2 (Ang-2)-has been shown to play a pivotal role in tumour angiogenesis, including hepatocellular carcinoma (HCC). However, few studies have focused on the direct interaction of these factors on in vivo tumour development and angiogenesis. AIM To examine the interaction between both factors in murine HCC. METHODS We examined the combination effect of VEGF and Ang-2 overexpression by means of a combination of a retroviral tetracycline (tet) regulated gene manipulating system in vivo, by providing tet in the drinking water, and a conventional plasmid gene expression system. RESULTS Neither Ang-2 nor VEGF overexpression induced proliferation of HCC cells in vitro. In vivo, although overexpression of Ang-2 did not increase tumour development, simultaneous expression of Ang-2 and VEGF synergistically augmented tumour growth and angiogenesis in murine HCC. Ang-2 plus VEGF induced tumour development was markedly attenuated by treatment with neutralising monoclonal antibodies against VEGF receptors. Ang-2 plus VEGF overexpression significantly increased the activities of matrix metalloproteinase (MMP)-2 and MMP-9 in the tumour. Suppression of intratumoral VEGF almost completely abolished this augmentation of MMPs. CONCLUSIONS These results suggest that Ang-2 synergistically augments VEGF mediated HCC development and angiogenesis. This proangiogenic activity was exerted only in the presence of VEGF, at least partly mediated via induction of MMP-2 and MMP-9 in the tumour.
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Affiliation(s)
- H Yoshiji
- Third Department of Internal Medicine, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8521, Japan.
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Sekikawa A, Fukui H, Fujii S, Nanakin A, Kanda N, Uenoyama Y, Sawabu T, Hisatsune H, Kusaka T, Ueno S, Nakase H, Seno H, Fujimori T, Chiba T. Possible role of REG Ialpha protein in ulcerative colitis and colitic cancer. Gut 2005; 54:1437-44. [PMID: 15914572 PMCID: PMC1774701 DOI: 10.1136/gut.2004.053587] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND AND AIMS Although regenerating gene (REG) Ialpha protein may be involved in the inflammation and carcinogenesis in the gastrointestinal tract, its pathophysiological role in ulcerative colitis (UC) and the resulting colitic cancer remains unclear. We investigated expression of the REG Ialpha gene and its protein in UC and colitic cancer tissues. We examined whether cytokines are responsible for REG Ialpha gene expression and whether REG Ialpha protein has a trophic and/or an antiapoptotic effect on colon cancer cells. METHODS Expression of REG Ialpha mRNA and its gene product in UC tissues was analysed by real time reverse transcription-polymerase chain reaction and immunohistochemistry, respectively. The effects of cytokines on REG Ialpha promoter activity were examined in LoVo cells by luciferase reporter assay. The effects of REG Ialpha protein on growth and H(2)O(2) induced apoptosis were examined in LoVo cells by MTT and TUNEL assays, respectively. RESULTS REG Ialpha protein was strongly expressed in inflamed epithelium and in dysplasias and cancerous lesions in UC tissues. The level of REG Ialpha mRNA expression in UC tissues correlated significantly with severity of inflammation and disease duration. REG Ialpha promoter activity was enhanced by stimulation with interferon gamma or interleukin 6. REG Ialpha protein promoted cell growth and conferred resistance to H(2)O(2) induced apoptosis in LoVo cells. REG Ialpha protein promoted Akt phosphorylation and enhanced Bcl-xL and Bcl-2 expression in LoVo cells. CONCLUSIONS The REG Ialpha gene is inducible by cytokines and its gene product may function as a mitogenic and/or an antiapoptotic factor in the UC-colitic cancer sequence.
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Affiliation(s)
- A Sekikawa
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Japan
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Kudo K, Fukui H. Calculation of nuclear magnetic shieldings using an analytically differentiated relativistic shielding formula. J Chem Phys 2005; 123:114102. [PMID: 16392546 DOI: 10.1063/1.2032408] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Two expressions for nuclear-magnetic-shielding tensor components based on analytically differentiating the electronic energy of a system are presented. The first is based on a second-order Douglas-Kroll-Hess approach, in which the off-diagonal block terms of the transformed Dirac Hamiltonian are diminished to second order with respect to both the electrostatic nuclear attraction potential V and the magnetic vector potential A. The second expression is based on the method of Barysz-Sadlej-Snijders, in which the off-diagonal block terms in the transformed Dirac Hamiltonian are completely eliminated with respect to purely V terms, while they are diminished to second order with respect to terms including A. The two approaches are applied to the calculation of nuclear magnetic shieldings of HX (X=F, Cl, Br, I), H2X (X=O, S, Se, Te), and noble gas X (X =He,Ne,Ar,Kr,Xe) systems with common gauge origins. The results show that relativistic corrections of higher than second order are negligibly small, except for the paramagnetic parts of I, Te, and Xe shieldings. The present calculations yield very large positive values for the anisotropy of proton shielding, deltasigma(H) = sigmaparallel(H)-sigmaperpendicular(H), of HI compared to previous reports. Unfortunately, no experimental values for the anisotropy of proton shielding in HI are available for verification.
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Affiliation(s)
- K Kudo
- Kitami Institute of Technology, Japan
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Yoshimura S, Mishima R, Miyoshi K, Fujimoto K, Murata Y, Kitamura Y, Takeda N, Fukui H. Histamine H1 receptor-mediated histamine H1 receptor gene expression. Inflamm Res 2005; 54 Suppl 1:S42-3. [PMID: 15928828 DOI: 10.1007/s00011-004-0419-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- S Yoshimura
- Department of Molecular Pharmacology, Institute of Health Biosciences, Graduate School, The University of Tokushima, Tokushima 770-8505, Japan
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61
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Affiliation(s)
- H Fukui
- Department of Molecular Pharmacology, Institute of Health Biosciences, Graduate School, The University of Tokushima, Tokushima 770-8505, Japan.
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Namisaki T, Yoshiji H, Fujimoto M, Kojima H, Yanase K, Kitade M, Ikenaka Y, Toyohara M, Yamao J, Tsujimoto T, Tsuruzono T, Kitano H, Matsumura K, Matsumura Y, Fukui H. Two cases of colonic tuberculosis presenting with massive melena. Int J Clin Pract 2004; 58:1162-4. [PMID: 15646415 DOI: 10.1111/j.1742-1241.2004.00361.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The clinical symptoms of colonic tuberculosis are variable, among which massive melena is extremely rare. Herein, we report two cases of colonic tuberculosis representing with massive melena, both of whom never had active pulmonary tuberculosis. The first case was a 55-year-old woman. Although her emergency colonoscopic setting suggested colonic tuberculosis, no evidence of tuberculosis could be found at that time. We performed a therapeutic trial and observed a drastic regression of the initial changes with 4-week treatment using antituberculous agents. The second case was a 37-year-old man. His emergency colonoscopy showed lesions mimicking colon carcinoma. However, the histological examinations did not indicate malignancy. The polymerase chain reaction of colonic biopsy specimen was positive for Mycobacterium tuberculosis. Similar to the first case, a significant improvement of the initial lesions was observed after 4-week treatment using antituberculous agents. Collectively, although the massive melena is a rare manifestation, tuberculosis of the colon should be suspected in the patients with such symptom.
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Affiliation(s)
- T Namisaki
- Third Department of Internal Medicine, Nara Medical University, Nara, Japan
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Yoneda S, Fukui H, Takaki M. Pacemaker activity from submucosal interstitial cells of Cajal drives high-frequency and low-amplitude circular muscle contractions in the mouse proximal colon. Neurogastroenterol Motil 2004; 16:621-7. [PMID: 15500519 DOI: 10.1111/j.1365-2982.2004.00546.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The present study was aimed at elucidating how pacemaker activity (plateau potentials) (mean frequency: 15.9 +/- 2.8 times min(-1)) from submucosal interstitial cells of Cajal (ICC-SM) control spontaneous contractions in the mouse proximal colon. Mechanical activities in the circular muscle direction showed high-frequency (mean frequency: 15.6 +/- 2.7 times min(-1)) and low-amplitude (mean amplitude: 0.01 +/- 0.005 g) (HFLA) rhythmic contractions. Simultaneous recordings of circular muscle mechanical activity and electrical activity from ICC-SM revealed that HFLA contractions were synchronized with plateau potentials (mean frequency: 15.9 +/- 2.8 times min(-1)). Although low-frequency (3.5 +/- 2.1 times min(-1)) and high-amplitude (0.12 +/- 0.03 g) (LFHA) contractions in both longitudinal and circular muscle directions were synchronized with burst of action potentials in both muscle cells, these LFHA contractions were not synchronous with plateau potentials. Intracellular Ca2+ release from the internal stores through IP3 receptors is not a major factor to generate both action potentials differently from plateau potentials. Neither tetrodotoxin nor atropine affected the plateau potentials. The results reveal that the pacemaker activity from ICC-SM drives only the spontaneous HFLA (one-tenth amplitude of the LFHA circular and longitudinal muscle contractions) circular muscle contractions without control by enteric nerves.
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Affiliation(s)
- S Yoneda
- Department of Physiology II, Nara Medical University, Kashihara, Japan
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Kawakami N, Miyoshi K, Horio S, Yoshimura Y, Yamauchi T, Fukui H. Direct phosphorylation of histamine H1 receptor by various protein kinases in vitro. ACTA ACUST UNITED AC 2004; 25:685-93. [PMID: 14685295 DOI: 10.1358/mf.2003.25.9.793335] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Phosphorylation of G protein-coupled receptors (GPCRs) by various kinases is suggested to be an important step in initiating receptor desensitization. Some reports have indirectly demonstrated the involvement of protein kinase C (PKC)-mediated receptor phosphorylation in the desensitization of the histamine H1 receptor (H1R). In this study, human c-myc-epitope-tagged H1R (hm mcH1R) was expressed in Sf9 cells, and an in vitro approach was taken to obtain direct evidence that H1R could be phosphorylated by various kinases. When hm mcH1R, which had been immunoprecipitated with anti-c-myc antibody from Sf9 cell membranes, was incubated with PKC, cAMP-dependent protein kinase (PKA), calcium/calmodulin-dependent protein kinase II (CaMKII) or cGMP-dependent protein kinase (PKG), the immunoprecipitated receptor was phosphorylated by these kinases. Membrane-bound hm mcH1R, whose conformation is closer to its physiological state than that of the immunoprecipitated receptor, was also phosphorylated by PKC, PKA, CaMKII and PKG. Phosphorylation of immunoprecipitated and membrane-bound hm mcH1R was inhibited by kinase inhibitors. These data are the first demonstration of the phosphorylation of H1R by four protein kinases, i.e., PKC, PKA, CaMKII and PKG, and provide fundamental information to help us further understand the relationship between H1R phosphorylation and desensitization of this receptor.
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Affiliation(s)
- N Kawakami
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima, Tokushima, Japan
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Tominaga K, Kuriyama S, Yoshiji H, Deguchi A, Kita Y, Funakoshi F, Masaki T, Kurokohchi K, Uchida N, Tsujimoto T, Fukui H. Repeated adenoviral administration into the biliary tract can induce repeated expression of the original gene construct in rat livers without immunosuppressive strategies. Gut 2004; 53:1167-73. [PMID: 15247187 PMCID: PMC1774146 DOI: 10.1136/gut.2003.013748] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Systemic adenoviral readministration appears to be limited by immunogenicity. AIMS We examined the feasibility of repeated adenovirus mediated gene transfer into the liver via the biliary tract. METHODS Recombinant adenoviruses carrying a reporter lacZ gene were infused retrogradely into the common bile duct of rats. Transduction efficiency of the lacZ gene was estimated histochemically and quantitatively. RESULTS Retrograde administration of recombinant adenoviruses into the common bile duct of rats resulted in efficient transgene expression in the liver, specifically in hepatocytes, but not in biliary epithelia. Transduction efficiency induced by intrabiliary adenoviral administration was not substantially different from that induced by intraportal adenoviral infusion. Transgene expression in the liver was however transient, and development of neutralising antibodies against adenovirus was observed in serum but not in bile. When adenoviruses were readministered into the common bile duct, successful re-expression of the transgene in the liver was achieved despite the existence of neutralising antibodies in serum. Interestingly, although proliferation of adenovirus specific T cells in response to adenoviral readministration was suppressed significantly by immunosuppressive FK506 treatment, levels of transgene expression in the liver achieved by intrabiliary adenoviral readministration were not significantly different between animals treated with and without FK506. Furthermore, third adenoviral administration into the common bile duct also induced successful transgene expression in the liver. CONCLUSIONS These results suggest that adenovirus mediated gene transfer into the liver may be repeatable without immunosuppressive strategies in clinical settings by means of endoscopic retrograde cholangiography.
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Affiliation(s)
- K Tominaga
- Third Department of Internal Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
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Kojima H, Sakurai S, Uemura M, Satoh H, Nakashima T, Minamino N, Kangawa K, Matsuo H, Fukui H. Adrenomedullin contributes to vascular hyporeactivity in cirrhotic rats with ascites via a release of nitric oxide. Scand J Gastroenterol 2004; 39:686-93. [PMID: 15370692 DOI: 10.1080/00365520410005306] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Plasma levels of adrenomedullin, a potent vasodilator peptide, are increased in cirrhotic patients, whereas its role in vascular hyporeactivity in cirrhosis has not been clarified. METHODS Adrenomedullin expression was evaluated by radioimmunoassay and reverse-transcription polymerase chain reaction. Vascular reactivity to phenylephrine, alpha-adrenoceptor agonist, was investigated in the aortic rings from control rats and CCl-induced cirrhotic rats with ascites in the presence of the neutralizing antibody against adrenomedullin, human adrenomedullin and/or N-nitro-L-arginine methyl ester, a nitric oxide synthase inhibitor. RESULTS Plasma adrenomedullin levels were significantly higher in cirrhotic rats than in controls (16.3 +/- 2.9 versus 7.4 +/- 1.7 fmol/mL, P < 0.05) and correlated negatively with systemic arterial pressure (r = -0.62, P < 0.05). Gene expression of adrenomedullin in various organs (liver, kidney, lung) and vessels (portal vein, aorta) was enhanced in cirrhotic rats compared with controls. Neutralizing antibody against adrenomedullin ameliorated the blunted contractile response to phenylephrine in cirrhotic aorta (Rmax: 1.5 +/- 0.1 versus 1.0 +/- 0.1 g/mg tissue, P < 0.05), whereas contraction remained unchanged in control aorta (Rmax: 1.9 +/- 0.2 versus 1.9 +/- 0.2 g/mg tissue). Intravenous infusion of human adrenomedullin induced a reduction of mean arterial pressure together with an increase of serum nitrate levels, which was abolished by neutralizing antibody against adrenomedullin. Human adrenomedullin caused a blunted contractile response to phenylephrine in both control and cirrhotic aortas, which was not observed in the presence of N-nitro-L-arginine methyl ester. CONCLUSIONS These findings indicate that the overproduction of adrenomedullin may contribute to vascular hyporeactivity in cirrhosis via a release of nitric oxide.
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Affiliation(s)
- H Kojima
- Third Department of Internal Medicine, Nara Medical University, Kashihara, Japan
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Shirai Y, Yoshiji H, Fujimoto M, Kojima H, Yanase K, Namisaki T, Kitade M, Yamamoto K, Sakaguchi H, Kichikawa K, Fukui H. Successful treatment of acute Budd-Chiari syndrome with percutaneous transluminal angioplasty. ACTA ACUST UNITED AC 2004; 29:685-7. [PMID: 15185028 DOI: 10.1007/s00261-004-0183-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2003] [Accepted: 01/28/2004] [Indexed: 10/26/2022]
Abstract
A 26-year-old man developed progressive, massive ascites and hematemesis due to rupture of esophageal varices. Combination diagnostic modalities of color doppler ultrasonography, enhanced computed tomography, and magnetic resonance imaging led to the case being diagnosed as acute Budd-Chiari syndrome with severe stricture of the intrahepatic inferior vena cava. Percutaneous transluminal angioplasty this resulted in great improvement of the clinical manifestations.
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Affiliation(s)
- Y Shirai
- Third Department of Internal Medicine, Nara Medical University, 840 Shijo-cho Kashihara, Nara 634-8522, Japan
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Fukui H, Hara S, Hashimoto Y, Horiuchi T, Ikezoe M, Itami N, Kawabe M, Kawanishi H, Kimura H, Nakamoto Y, Nakayama M, Ono M, Ota K, Shinoda T, Suga T, Ueda T, Fujishima M, Maeba T, Yamashita A, Yoshino Y, Watanabe S. Review of combination of peritoneal dialysis and hemodialysis as a modality of treatment for end-stage renal disease. Ther Apher Dial 2004; 8:56-61. [PMID: 15128021 DOI: 10.1111/j.1526-0968.2004.00107.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Because the contribution of residual renal function (RRF) to total solute clearance is often significant in continuous ambulatory peritoneal dialysis (CAPD), loss of RRF over time can lead to inadequate dialysis if appropriate prescription management strategies are not pursued. Additionally, declines in ultrafiltration caused by increases in peritoneal permeability may limit continuation of CAPD therapy. Peritoneal dialysis and hemodialysis (PD + HD) combination therapy (complementary dialysis therapy) is an alternative method. This therapy allows the patient to maintain daily activities, as with CAPD, while undergoing once-a-week HD supplements for the insufficient removal of solutes and water. This therapy allows for the continuation of PD without shifting to total HD in PD patients who continue to have uremic symptoms even after individualization of the PD prescription. This treatment option is psychologically more acceptable to patients and may be expected to provide such accompanying beneficial effects as peritoneal resting, improvement of QOL and reduction in medical cost.
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69
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Fukui H, Baba T, Shiraishi Y, Imanishi S, Kudo K, Mori K, Shimoji M. Calculation of nuclear magnetic shieldings: infinite-order Foldy–Wouthuysen transformation. Mol Phys 2004. [DOI: 10.1080/00268970410001694661] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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70
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Horio S, Ogawa M, Kato T, Kawakami N, Miyoshi K, Fujimoto K, Fukui H. Phosphorylation of human histamine H(1) receptors and its role in agonist-induced receptor internalization and down-regulation. Inflamm Res 2004; 53 Suppl 1:S73-4. [PMID: 15054626 DOI: 10.1007/s00011-003-0335-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2003] [Accepted: 01/01/2003] [Indexed: 12/01/2022] Open
Affiliation(s)
- S Horio
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima, 770-8505 Tokushima, Japan
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71
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Murata Y, Miyoshi A, Kitamura Y, Takeda N, Fukui H. Up-regulation of histamine H(1) receptors in an allergic rat nasal mucosa model. Inflamm Res 2004; 53 Suppl 1:S11-2. [PMID: 15054595 DOI: 10.1007/s00011-003-0304-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2003] [Accepted: 01/01/2003] [Indexed: 10/26/2022] Open
Affiliation(s)
- Y Murata
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima, 1-78-1 Shomachi, 770-8505 Tokushima, Japan.
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72
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Kitamura Y, Miyoshi A, Murata Y, Maeyama K, Takeda N, Fukui H. Increase in the level of histidine decarboxylase mRNA expression in nasal mucosa of rats sensitized by toluene diisocyanate. Inflamm Res 2004; 53 Suppl 1:S13-4. [PMID: 15054596 DOI: 10.1007/s00011-003-0305-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2003] [Accepted: 01/01/2003] [Indexed: 11/28/2022] Open
Affiliation(s)
- Y Kitamura
- Department of Otolaryngology, University of Tokushima School of Medicine, 3-18-15 Kuramoto, 770-8503 Tokushima, Japan.
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73
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Matsuyama K, Kawakami N, Ichikawa T, Nitta Y, Ishimura K, Horio S, Fukui H. Expression of histamine H 1 receptor in placenta. Inflamm Res 2004; 53 Suppl 1:S85-6. [PMID: 15054632 DOI: 10.1007/s00011-003-0341-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2003] [Accepted: 01/01/2003] [Indexed: 10/26/2022] Open
Affiliation(s)
- K Matsuyama
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Shomachi, 770-8505 Tokushima, Japan
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Abstract
Differential isolation of physiologically and ecologically diverse microbial groups facilitates evaluation of their activities in the environment. Here we describe a new method for differential isolation of freely dispersed and particle-associated peat microorganisms. The method is based on sequential elution of peat. Two types of natural peat, "young" sphagnum peat and "old" reed-based peat that have significantly different molecular composition as revealed by solid-state 13C NMR, were used for the method development. Various combinations of elution parameters (pH values, surfactant concentration, and sonication) were tested. Protein yield, CFU counts, 16S rDNA gene sequence, and T-RFLP analyses were used as criteria for evaluating the effectiveness of the elution protocols. The optimal method consisted of sequential elutions with (i) pH 6.2, 0.1 M potassium phosphate buffer, (ii) the same buffer amended with 0.01% of Tween 80, and (iii) treatment (ii) amended with sonication for 2 min. This method allowed differential isolation of freely dispersed and particle-associated microorganisms with (i) highest yield, (ii) highest diversity within the each microbial fraction, and (iii) best discrimination between the freely dispersed and particle-associated microbial communities. The method was applied for characterization of peat microbial communities and revealed different taxonomic composition and similar spatial organization of sphagnum and reed-sage peat microorganisms.
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Affiliation(s)
- A L Barkovskii
- Department of Biological and Environmental Sciences, Georgia College and State University, Milledgeville, GA 31061-0490, USA.
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75
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Seki J, Sonoke S, Saheki A, Fukui H, Mayumi T. Decreased binding affinity of apolipoprotein E plays an important role in the reduced hepatic clearance of Lipid Nano-Sphere (LNS). J Drug Deliv Sci Technol 2004. [DOI: 10.1016/s1773-2247(04)50097-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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76
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Seki J, Saheki A, Sonoke S, Fukui H, Mayumi T. Decreased binding affinity of apolipoprotein C-II to Lipid Nano-Sphere (LNS) plays an important role in the plasma half-life and reduced hæmolytic activity. J Drug Deliv Sci Technol 2004. [DOI: 10.1016/s1773-2247(04)50062-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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77
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Araki K, Nakamura H, Fukui H, Ikeda M. [Inflammatory pseudotumor diagnosed by thoracoscopic resections; report of a case]. Kyobu Geka 2003; 56:893-6. [PMID: 13677930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
Abstract
A 65-year-old woman was referred to our hospital because of cough and sputum. Chest CT scan revealed a coin lesion (about 1.5 cm diameter) with slight speculation at the right upper lobe. We suspected a lung cancer and performed video assisted thoracic surgery (VATS). Under the thoracoscopy, the tumor was completely extirpated with safety margin by the partial resection of the right upper lobe. Pathological findings definitely revealed inflammatory pseudotumor, fibrohistiocytic variant type. VATS is a good indication for the diagnosis and treatment of inflammatory pseudotumor. This case was reported together with some reviews of the literature.
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Affiliation(s)
- K Araki
- Department of Thoracic Surgery, National Yonago Hospital, Yonago, Japan
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78
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Yoshiji H, Kuriyama S, Yoshii J, Ikenaka Y, Noguchi R, Hicklin DJ, Wu Y, Yanase K, Namisaki T, Yamazaki M, Tsujinoue H, Imazu H, Masaki T, Fukui H. Vascular endothelial growth factor and receptor interaction is a prerequisite for murine hepatic fibrogenesis. Gut 2003; 52:1347-54. [PMID: 12912869 PMCID: PMC1773781 DOI: 10.1136/gut.52.9.1347] [Citation(s) in RCA: 234] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND It has been shown that expression of the potent angiogenic factor, vascular endothelial growth factor (VEGF), and its receptors, flt-1 (VEGFR-1) and KDR/Flk-1 (VEGFR-2), increased during the development of liver fibrosis. AIMS To elucidate the in vivo role of interaction between VEGF and its receptors in liver fibrogenesis. METHODS A model of CCl(4) induced hepatic fibrosis was used to assess the role of VEGFR-1 and VEGFR-2 by means of specific neutralising monoclonal antibodies (R-1mAb and R-2mAb, respectively). R-1mAb and R-2mAb were administered after two weeks of treatment with CCl(4), and indices of fibrosis were assessed at eight weeks. RESULTS Hepatic VEGF mRNA expression significantly increased during the development of liver fibrosis. Both R-1mAb and R-2mAb treatments significantly attenuated the development of fibrosis associated with suppression of neovascularisation in the liver. Hepatic hydroxyproline and serum fibrosis markers were also suppressed. Furthermore, the number of alpha-smooth muscle actin positive cells and alpha1(I)-procollagen mRNA expression were significantly suppressed by R-1mAb and R-2mAb treatment. The inhibitory effect of R-2mAb was more potent than that of R-1mAb, and combination treatment with both mAbs almost completely attenuated fibrosis development. Our in vitro study showed that VEGF treatment significantly stimulated proliferation of both activated hepatic stellate cells (HSC) and sinusoidal endothelial cells (SEC). VEGF also significantly increased alpha1(I)-procollagen mRNA expression in activated HSC. CONCLUSIONS These results suggest that the interaction of VEGF and its receptor, which reflected the combined effects of both on HSC and SEC, was a prerequisite for liver fibrosis development.
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Affiliation(s)
- H Yoshiji
- Third Department of Internal Medicine, Nara Medical University, Nara, Japan.
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79
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Miwa K, Nakamura H, Fukui H, Ikeda M, Furuse K. [A resected case of malignant fibrous histiocytoma of the chest wall]. Kyobu Geka 2003; 56:742-6. [PMID: 12931582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
We report a 74-year-old woman with malignant fibrous histiocytoma (MFH), treated successfully by radiation and followed with chest wall resection and reconstruction. The patient suffered from right back pain and her chest X-ray showed a clear round shadow in the middle field of the right lung. Chest computed tomography (CT) showed a 5 x 5 cm tumor in diameter, involving the right 8 rib with destructive changes. After radiation therapy of total 30 Gy to the tumor to obtain the safety surgical margin, we widely resected 10 x 9 cm chest wall with 3 ribs in area under thoracoscopy and performed reconstruction using GORE-TEX Soft Tissue Patch. The pathological and immuno-histochemical diagnosis showed pleomorphic type of MFH. Final result of the tumor negative in surgical margin manifested that our technique of chest wall resection and reconstruction using thoracoscope after the irradiation to the tumor was very safe and useful.
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Affiliation(s)
- K Miwa
- Department of Thoracic Surgery, Yonago National Hospital, Yonago, Japan
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80
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Fukui H, Hatano K, Kamio K, Miyake M, Tamura T, Hayakawa K. Cooperative Binding and the Conformation of Poly(l-Glutamic Acid) in Guanidinium Salts with an Alkanoylamidoalkyl Group. J Phys Chem B 2003. [DOI: 10.1021/jp027178n] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H. Fukui
- Department of Chemistry and BioScience, Faculty of Science, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan, Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyou University, Higashi-ku, Fukuoka 813-8503, Japan, and Research and Development Headquarters, Lion Corporation, 13-12, Hirai-7, Edogawa-ku, Tokyo 132-0035, Japan
| | - K. Hatano
- Department of Chemistry and BioScience, Faculty of Science, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan, Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyou University, Higashi-ku, Fukuoka 813-8503, Japan, and Research and Development Headquarters, Lion Corporation, 13-12, Hirai-7, Edogawa-ku, Tokyo 132-0035, Japan
| | - K. Kamio
- Department of Chemistry and BioScience, Faculty of Science, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan, Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyou University, Higashi-ku, Fukuoka 813-8503, Japan, and Research and Development Headquarters, Lion Corporation, 13-12, Hirai-7, Edogawa-ku, Tokyo 132-0035, Japan
| | - M. Miyake
- Department of Chemistry and BioScience, Faculty of Science, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan, Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyou University, Higashi-ku, Fukuoka 813-8503, Japan, and Research and Development Headquarters, Lion Corporation, 13-12, Hirai-7, Edogawa-ku, Tokyo 132-0035, Japan
| | - T. Tamura
- Department of Chemistry and BioScience, Faculty of Science, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan, Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyou University, Higashi-ku, Fukuoka 813-8503, Japan, and Research and Development Headquarters, Lion Corporation, 13-12, Hirai-7, Edogawa-ku, Tokyo 132-0035, Japan
| | - K. Hayakawa
- Department of Chemistry and BioScience, Faculty of Science, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan, Department of Industrial Chemistry, Faculty of Engineering, Kyushu Sangyou University, Higashi-ku, Fukuoka 813-8503, Japan, and Research and Development Headquarters, Lion Corporation, 13-12, Hirai-7, Edogawa-ku, Tokyo 132-0035, Japan
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81
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Miyoshi K, Kawakami N, Horio S, Fukui H. Inhibition of histamine H1 receptor downregulation by KT5823, a protein kinase G inhibitor. Methods Find Exp Clin Pharmacol 2003; 25:343-7. [PMID: 12851655 DOI: 10.1358/mf.2003.25.5.769654] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The role of various protein kinases in the downregulation of histamine H(1) receptors was studied by using their inhibitors and activators. Human histamine H(1) receptors (H(1)Rs) expressed in CHO cells were downregulated by histamine in a dose- and time-dependent manner, and this downregulation continued to increase over a 24-h period. KT5823, an inhibitor of protein kinase G, remarkably but not completely reversed the histamine-induced H(1)R downregulation over 24 h. HA1004, another inhibitor of protein kinase G, showed a similar inhibitory effect. However, both 8-Br-cGMP and 8-pCPT-cGMP, membrane-permeable analogues of cGMP, did not show any effects on H(1)R downregulation in the absence or presence of histamine. Ro 31-8220, an inhibitor of protein kinase C (PKC), did not affect histamine-induced downregulation of H(1)R; nor did phorbol 12-myristate 13-acetate, a PKC-activating phorbol ester. Similarly, histamine-induced downregulation of H(1)R was unaffected by either H-89, an inhibitor of protein kinase A, or 8-Br-cAMP, a membrane-permeable analogue of cAMP.
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Affiliation(s)
- K Miyoshi
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima, Tokushima, Japan
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82
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Araki K, Nakamura H, Fukui H, Ikeda M. [Thoracoscopic resection of localized fibrous tumor of the pleura; report of a case and review of the Japanese literature]. Kyobu Geka 2003; 56:419-22. [PMID: 12739368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
A 61-year-old female was admitted with abnormal shadow on chest X-ray. Chest computed tomography (CT) showed a clearly localized flat tumor at the peripheral region of the left lung. We suspected localized fibrous tumor of the pleura (LFTP) and performed video-assisted thoracic surgery (VATS). Under the thoracoscopy, the tumor was connected to the visceral pleura with a short pedicle and completely resected with safety margin. Pathological findings, including immunohistochemical examination, definitely revealed benign LFTP. VATS is a good indication for the diagnosis and treatment of LFTP. This case was reported together with some reviews of the literature.
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Affiliation(s)
- K Araki
- Department of Thoracic Surgery, National Yonago Hospital, Yonago, Japan
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83
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Fukuda S, Midoro K, Yamasaki M, Gyoten M, Kawano Y, Fukui H, Ashida Y, Nagaya H. Characteristics of the antihistamine effect of TAK-427, a novel imidazopyridazine derivative. Inflamm Res 2003; 52:206-14. [PMID: 12813625 DOI: 10.1007/s000110300073] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN The characteristics of the antihistamine effect of the new antiallergic compound TAK-427 were investigated. MATERIALS AND METHODS In vitro binding assay of [(3)H] pyrilamine was performed using recombinant human histamine H(1) receptors (rhH(1)R). In vivo studies were performed in male ICR mice or Hartley guinea pigs. Drugs were administered orally 1 h before examinations. Determinations were made of histamine-induced skin reaction, ex vivo measured radioligand binding to brain and lung H(1) receptors, pentobarbital-induced sleeping time, passive cutaneous anaphylaxis (PCA) reaction, and antigen-induced itch-scratch responses (ISRs). RESULTS TAK-427 inhibited ligand binding to rhH(1)R with an IC(50) value of 17.3 nmol/l. TAK-427 inhibited histamine-induced skin reactions in guinea pigs and mice with an ID(50) value of 0.884 and 0.450 mg/kg, p.o., respectively; significant inhibition associated with 10 mg/kg of TAK-427 was still observed 24 h after dosing in guinea pigs. TAK-427 showed as high selectivity for peripheral H(1) receptors as terfenadine and epinastine did, which was evaluated by ex vivo measured radioligand binding. Even at 300 mg/kg, TAK-427 did not affect pentobarbital-induced sleeping time in mice. TAK-427 significantly inhibited PCA in mice and guinea pigs, and also inhibited antigen-induced ISRs in guinea pigs. CONCLUSIONS These results suggest that TAK-427 may have a long-lasting antihistamine activity with minimum sedative side effect and suppress acute phase allergic reactions.
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Affiliation(s)
- S Fukuda
- Pharmaceutical Research Division, Takeda Chemical Industries, Ltd., 2-17-85, Juso-Honmachi, Yodogawa-ku, Osaka, 532-8686, Japan.
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84
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Katoh T, Ogawa M, Fujimoto K, Horio S, Fukui H. Role of putative phosphorylation sites in down-regulation of histamine H1 receptors. Inflamm Res 2003; 52 Suppl 1:S43-4. [PMID: 12755404 DOI: 10.1007/s000110300047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Affiliation(s)
- T Katoh
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima, Tokushima 770-8505, Japan
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85
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Akahane T, Kuriyama S, Matsumoto M, Kikuchi E, Kikukawa M, Yoshiji H, Masui K, Fukui H. Pancreatic pleural effusion with a pancreaticopleural fistula diagnosed by magnetic resonance cholangiopancreatography and cured by somatostatin analogue treatment. Abdom Imaging 2003; 28:92-5. [PMID: 12483394 DOI: 10.1007/s00261-001-0144-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A 69-year-old man with chronic alcoholic pancreatitis developed a left-sided massive pleural effusion. Magnetic resonance cholangiopancreatography clearly demonstrated the pancreatic cyst and the fistula connecting the cyst with the left pleural cavity, resulting in the diagnosis of pancreatic pleural effusion with a pancreaticopleural fistula. Conservative somatostatin analogue treatment completely eradicated the pancreatic pleural effusion and closed the pancreaticopleural fistula.
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Affiliation(s)
- T Akahane
- Third Department of Internal Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
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86
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87
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Yoshiji H, Yoshii J, Ikenaka Y, Noguchi R, Yanase K, Tsujinoue H, Imazu H, Fukui H. Suppression of the renin-angiotensin system attenuates vascular endothelial growth factor-mediated tumor development and angiogenesis in murine hepatocellular carcinoma cells. Int J Oncol 2002. [DOI: 10.3892/ijo.20.6.1227] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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88
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Miura K, Tanaka M, Fukui H, Toyama H. NMR study of ion-molecule interaction. 4. Proton and chlorine-35 and 35Cl NMR of chloride ion-trihalomethane association. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100319a057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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89
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Fukui H, Tsuji T, Miura K. Calculation of the nuclear spin-spin coupling constants. 3. .sigma.- and .pi.-Electron contributions in some simple unsaturated hydrocarbons. J Am Chem Soc 2002. [DOI: 10.1021/ja00403a007] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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90
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Miura K, Hashimoto K, Fukui H, Yamada E, Shimokawa S. Nuclear magnetic resonance study of ion hydration. 3. Anisotropic rotational motion of water molecules bound to the aluminum(III) ion. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100269a042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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91
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92
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93
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Takeuchi Y, Yoshikawa M, Tsujino T, Kohno S, Tsukamoto N, Shiroi A, Kikuchi E, Fukui H, Miyajima H. A case of aceruloplasminaemia: abnormal serum ceruloplasmin protein without ferroxidase activity. J Neurol Neurosurg Psychiatry 2002; 72:543-5. [PMID: 11909923 PMCID: PMC1737827 DOI: 10.1136/jnnp.72.4.543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
A 34 year old diabetic man with a complete deficiency of serum ferroxidase activity, regardless of the presence of serum ceruloplasmin (Cp), a multicopper ferroxidase protein, is described. The patient had had diabetes mellitus for 13 years, and was also found to have retinal degeneration accompanied by the development of a hearing disturbance of unknown aetiology. Laboratory examination showed markedly increased serum ferritin and low serum iron. Magnetic resonance imaging showed a pronounced hypointensity in the putamen, caudate, cerebellar dentate, and thalamus on T2 weighted images, and also disclosed a low level signal in the liver, suggesting the accumulation of some magnetic substances in the brain and liver. Liver biopsies histochemically identified iron deposition in the hepatocytes. Most of these findings were consistent with the newly established autosomal recessive disease "aceruloplasminaemia", except for the presence of serum Cp and the lack of apparent neurological symptoms. Interestingly, no ferroxidase activity was detected in the patient's serum, whereas suppressed ferroxidase activity was found in his mother's serum. A nucleotide sequence analysis of the Cp gene showed two mutations; a C to T substitution at nucleotide 2701 in exon 16, resulting in a nonsense mutation at amino acid 882 (Arg882ter), and a T to G substitution at nucleotide 2991 in exon 17, resulting in an amino acid alternation at amino acid 978 (His978Gln). The second mutation was also found in the patient's mother. The absence of serum ferroxidase activity despite the presence of serum Cp protein in this compound heterozygote was considered to be due to the production of a non-functional Cp harbouring no ferroxidase activity.
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Affiliation(s)
- Y Takeuchi
- Department of Internal Medicine, Belland General Hospital, Sakai, Japan
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94
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Affiliation(s)
- R Ishikawa
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima, Japan
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95
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Niimi M, Ogawara T, Yamashita T, Yamamoto Y, Ueyama A, Kambe T, Okamoto T, Ban T, Tamanoi H, Ozaki K, Fujiwara T, Fukui H, Takahashi EI, Kyushiki H, Tanigami A. Identification of GFAT1-L, a novel splice variant of human glutamine: fructose-6-phosphate amidotransferase (GFAT1) that is expressed abundantly in skeletal muscle. J Hum Genet 2002; 46:566-71. [PMID: 11587069 DOI: 10.1007/s100380170022] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Glutamine:fructose-6-phosphate amidotransferase (GFAT1) is the rate-limiting enzyme in the hexosamine biosynthetic pathway, which plays an important role in hyperglycemia-induced insulin resistance. To evaluate the role of GFAT1 expression, we analyzed the expression profiles of GFAT1 mRNA in various human tissues using reverse transcriptase-polymerase chain reaction. We report here the identification and cDNA cloning of a novel GFAT1 splice variant expressed abundantly in skeletal muscle and heart. This subtype, designated GFAT1-L, contains a 54-bp insertion within the GFAT1 coding sequence. Recombinant GFAT1-L protein possessed functional GFAT activities and biochemical characteristics similar to GFAT1. Previously, GFAT1 was considered a simplex enzyme. The identification of a novel GFAT1 subtype possessing functional enzymatic activity and tissue-specific expression should provide additional insight into the mechanism of skeletal muscle insulin resistance and diabetes complications.
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Affiliation(s)
- M Niimi
- Otsuka GEN Research Institute, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
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96
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Yoshii J, Yoshiji H, Kuriyama S, Ikenaka Y, Noguchi R, Okuda H, Tsujinoue H, Nakatani T, Kishida H, Nakae D, Gomez DE, De Lorenzo MS, Tejera AM, Fukui H. The copper-chelating agent, trientine, suppresses tumor development and angiogenesis in the murine hepatocellular carcinoma cells. Int J Cancer 2001; 94:768-73. [PMID: 11745476 DOI: 10.1002/ijc.1537] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Angiogenesis is now recognized as a crucial process in tumor development, including hepatocellular carcinoma (HCC). Since HCC is known as a hypervascular tumor, anti-angiogenesis is a promising approach to inhibit the HCC development. Trientine dihydrochloride (trientine) is used in clinical practice as an alternative copper (Cu)-chelating agent for patients with Wilson's disease of penicillamine intolerance. In our study, we examined the effect of Cu-chelating agents on tumor development and angiogenesis in the murine HCC xenograft model. Although both trientine and penicillamine in the drinking water suppressed the tumor development, trientine exerted a more potent inhibitory effect than penicillamine. In combination with a Cu-deficient diet, both trientine and penicillamine almost abolished the HCC development. Trientine treatment resulted in a marked suppression of neovascularization and increase of apoptosis in the tumor, whereas tumor cell proliferation itself was not altered. In vitro studies also exhibited that trientine is not cytotoxic for the tumor cells. On the other hand, it significantly suppressed the endothelial cell proliferation. These results suggested that Cu plays a pivotal role in tumor development and angiogenesis in the murine HCC cells, and Cu-chelators, especially trientine, could inhibit angiogenesis and enhance apoptosis in the tumor with consequent suppression of the tumor growth in vivo. Since trientine is already used in clinical practice without any serious side effects as compared to penicillamine, it may be an effective new strategy for future HCC therapy.
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Affiliation(s)
- J Yoshii
- Third Department of Internal Medicine, Nara Medical University, Nara, Japan
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97
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Abstract
A red naphthoquinone, named hydroxysesamone, was isolated from the roots of Sesamum indicum together with a known yellow naphthoxirene derivative, 2,3-epoxy-2,3-dihydro-5,8-dihydroxy-2-(3-methyl-2-butenyl)-1,4-naphthoquinone, named 2,3-epoxysesamone. The structure of the naphthoquinone was characterized as 2,5,8-trihydroxy-3-(3-methyl-2-butenyl)-1,4-naphthoquinone on the basis of spectral evidence. Full assignments of NMR resonances of 2,3-epoxysesamone were also confirmed by two-dimensional NMR spectroscopic experiments. Chlorosesamone, hydroxysesamone and 2,3-epoxysesamone all showed antifungal activities toward Cladosporium fulvum.
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Affiliation(s)
- A F Hasan
- Department of Biochemistry and Food Science, Faculty of Agriculture, Kagawa University, Kagawa 761-0795, Japan
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98
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Yoneda S, Kadowaki M, Sugimori S, Sekiguchi F, Sunano S, Fukui H, Takaki M. Rhythmic spontaneous contractions in the rat proximal colon. Jpn J Physiol 2001; 51:717-23. [PMID: 11846963 DOI: 10.2170/jjphysiol.51.717] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
C-kit immunoreactive cells are known to be interstitial cells of Cajal (ICCs), and they generate pacemaker activity of the gastrointestinal tract. Recently a large number of special smooth muscle cells corresponding to c-kit immunoreactive cells were found in the proximal colon of the guinea pig. We learned that the rat proximal colon showed tetrodotoxin-insensitive regular rhythmic spontaneous contractions (RSCs) and hypothesized that RSCs are generated and/or regulated by ICCs. To prove our hypothesis, we investigated whether RSCs are absent in homozygous Ws/Ws mutant rats, since c-kit positive ICCs along the submucosal surface of the circular muscle (ICC(SM)) and myenteric plexus (ICC(MY)) are lacking. In contrast to our hypothesis, we found that RSCs were still present in the proximal colon of the Ws/Ws mutant rats. A recent study has reported that c-kit negative ICC(SM) remains in Ws/Ws mutant rats. Taken together, RSCs may be generated by c-kit negative ICC(SM) in the rat proximal colon. The blockade of sarcoplasmic reticulum Ca(2+)-ATPase by cyclopiazonic acid (CPA) (10(-6)M) or by thapsigargin (10(-6)M) increased the frequency of RSCs. The increasing effects of CPA on the frequency of RSCs were more prominent in Ws/Ws mutant rats than in +/+ rats. We concluded that the functional coordination between c-kit negative ICC(SM) and other mutationally impaired c-kit positive ICC(MY) and ICC(SM) may be required for moderate regulation in the frequency of spontaneous activity.
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Affiliation(s)
- S Yoneda
- Department of Physiology II, Nara Medical University, Kashihara, 634-8521 Japan
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99
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Eguchi S, Siogama T, Tsurunaga Y, Mizutani A, Furui J, Kanematsu T, Fukui H. The effect of fenestration procedure on liver regeneration in a case of polycystic liver disease. Hepatogastroenterology 2001; 48:1733-5. [PMID: 11813611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
We encountered a case of polycystic liver disease for which unroofing and fenestration procedures were performed. The patient was a 55-year-old Japanese female with epigastralgia and abdominal fullness. On computed tomography, millions of low-density areas were seen, particularly in S6, 7, where huge cysts 15 cm in diameter were observed. Magnetic resonance imaging showed a T1 low T2 high-intensity lesion, which was compatible with simple cysts. Unroofing for the cysts in S6, 7 and fenestration of other cysts were performed. Histological examination revealed cuboidal and flat monolayer epithelia with no dysplasia in the wall of the cysts. The postoperative course was uneventful, and the patient's abdominal symptoms remarkably improved. The percentage of the liver volume which was increased in relation to standard liver volume was reduced from 241% (3386 mL: liver parenchyma 750 mL, cysts 2636 mL) to 180% (2525 mL, 1566 mL, 959 mL, respectively) after surgery. The potent mitogen, hepatocyte growth factor, was rapidly increased after the operation and stayed high during the observation period. In this patient, since no liver resection was performed, liver regenerative stimulus was considered to be the loss of space. This phenomenon represents a model of liver regeneration in response to loss of occupied space in an absence of shear stress.
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Affiliation(s)
- S Eguchi
- Department of Surgery, Nagasaki Memorial Hospital, Nagasaki, Japan
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100
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Yoshiji H, Kuriyama S, Yoshii J, Ikenaka Y, Noguchi R, Nakatani T, Tsujinoue H, Fukui H. Angiotensin-II type 1 receptor interaction is a major regulator for liver fibrosis development in rats. Hepatology 2001; 34:745-50. [PMID: 11584371 DOI: 10.1053/jhep.2001.28231] [Citation(s) in RCA: 302] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The renin-angiotensin system (RAS) is frequently activated in patients with chronic liver diseases. Angiotensin-II (AT-II) has been suggested to play an important role in liver fibrogenesis. It induces hepatic stellate cell (HSC) proliferation and up-regulates the transforming growth factor beta(1) (TGF-beta(1)) expression via AT-II type 1 receptor (AT(1)-R) in vitro. The aim of the present study was to examine the in vivo effect of candesartan (CA), a clinically used AT(1)-R blocker (ARB), and perindopril (PE), an angiotensin-converting enzyme (ACE) inhibitor (ACE-I), on pig serum-induced liver fibrosis development in rats. The clinically available comparable doses of CA and PE significantly attenuated the fibrosis development. These inhibitory effects of PE and CA were also found in the on-going liver fibrosis model. The hepatic hydroxyproline and serum fibrosis markers were significantly suppressed by CA and PE treatment. Furthermore, the alpha smooth muscle actin (alpha-SMA) positive cells in number were markedly suppressed by CA and PE treatment. Similarly, the hepatic TGF-beta(1) protein and messenger RNA (mRNA) levels were significantly suppressed. Our in vitro study showed that AT-II increased the TGF-beta(1) mRNA expression in the activated HSCs, and this effect was totally blocked by CA. These results suggested that the RAS, especially AT-II and AT(1)-R interaction plays a pivotal role in liver fibrosis development through HSC activation. Because both CA and PE are widely used in clinical practice without serious side effects, these drugs may provide an effective new strategy for anti-liver fibrosis therapy.
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Affiliation(s)
- H Yoshiji
- Third Department of Internal Medicine, Nara Medical University, Kashihara, Nara, Japan.
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