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Wu S, Hayakawa T, Kikuchi R, Grunzinger SJ, Kakimoto MA, Oikawa H. Synthesis and Characterization of Semiaromatic Polyimides Containing POSS in Main Chain Derived from Double-Decker-Shaped Silsesquioxane. Macromolecules 2007. [DOI: 10.1021/ma070547z] [Citation(s) in RCA: 178] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Okazaki K, Sakamoto K, Kikuchi R, Saito A, Togashi E, Kuginuki Y, Matsumoto S, Hirai M. Mapping and characterization of FLC homologs and QTL analysis of flowering time in Brassica oleracea. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2007; 114:595-608. [PMID: 17136371 DOI: 10.1007/s00122-006-0460-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2006] [Accepted: 11/06/2006] [Indexed: 05/12/2023]
Abstract
The FLC gene product is an inhibitor of flowering in Arabidopsis. FLC homologs in Brassica species are thought to control vernalization. We cloned four FLC homologs (BoFLCs) from Brassica oleracea. Three of these, BoFLC1, BoFLC3 and BoFLC5, have been previously characterized. The fourth novel sequence displayed 98% sequence homology to the previously identified gene BoFLC4, but also showed 91% homology to BrFLC2 from Brassica rapa. Phylogenetic analysis showed that this clone belongs to the FLC2 clade. Therefore, we designated this gene BoFLC2. Based on the segregation of RFLP, SRAP, CAPS, SSR and AFLP loci, a detailed linkage map of B. oleracea was constructed in the F(2) progeny obtained from a cross of B. oleracea cv. Green Comet (broccoli; non-vernalization type) and B. oleracea cv. Reiho (cabbage; vernalization type), which covered 540 cM, 9 major linkage groups. Six quantitative trait loci (QTL) controlling flowering time were detected. BoFLC1, BoFLC3 and BoFLC5 were not linked to the QTLs controlling flowering time. However, the largest QTL effect was located in the region where BoFLC2 was mapped. Genotyping of F(2 )plants at the BoFLC2 locus showed that most of the early flowering plants were homozygotes of BoFLC-GC, whereas most of the late- and non-flowering plants were homozygotes of BoFLC-Rei. The BoFLC2 homologs present in plants of the non-vernalization type were non-functional, due to a frameshift in exon 4. Moreover, duplications and deletions of BoFLC2 were detected in broccoli and a rapid cycling line, respectively. These results suggest that BoFLC2 contributes to the control of flowering time in B. oleracea.
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Isowa N, Kikuchi R, Kosaba S. [Diaphragmatic hernia by blunt trauma]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2006; 59:1023-6. [PMID: 17058666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Two cases of diaphragmatic hernia by blunt trauma were experienced. One patient was a 21-year-old man who had been injured in a car collision 4 days before was transferred to our division from another hospital. Another patient was a 66-year-old man who was admitted in an emergency after a fall from a height. Both patients were suspected from chest X-ray and computed tomography (CT) to have traumatic rupture of left diaphragm, and were successfully performed repair of the diaphragm by thoracic approach. Since the diagnosis of ruptured diaphragm is frequently missed in the acute phase, a careful scrutiny of the chest X-ray is required. Laparotomy is the operative approach of choice in the case with the associated abdominal injuries. On the other hand, thoracotomy is selected for the patients accompanied with the lung injury or in the latent phase. Although diaphragmatic rupture can be managed by the appropriate treatment, the associated injuries or complications are responsible for the high mortality.
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Kikuchi R, Murakami M, Sobue S, Iwasaki T, Hagiwara K, Takagi A, Kojima T, Asano H, Suzuki M, Banno Y, Nozawa Y, Murate T. Ewing's sarcoma fusion protein, EWS/Fli-1 and Fli-1 protein induce PLD2 but not PLD1 gene expression by binding to an ETS domain of 5' promoter. Oncogene 2006; 26:1802-10. [PMID: 16964281 DOI: 10.1038/sj.onc.1209973] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
It was reported that short interfering RNA (siRNA) of EWS/Fli-1 downregulated phospholipase D (PLD)2 in Ewing's sarcoma (EWS) cell line, suggesting that PLD2 is the target of aberrant transcription factor, EWS/Fli-1. Here, we further investigated the regulation of PLD2 gene expression by EWS/Fli-1 and Fli-1 in another EWS cell line, and also in EWS/Fli-1- or Fli-1-transfected cell line. EWS/Fli-1- or Fli-1-overexpressed cells showed higher PLD2 but not PLD1 protein expression and enhanced cell proliferation as compared to mock transfectant. The treatment of these cells with 1-butanol or siRNA of PLD2 inhibited cell growth, suggesting the pivotal role of PLD in cell growth promotion. PLD2 but not PLD1 mRNA level was also increased in EWS/Fli-1 or Fli-1-transfectants. After determining the transcription initiation points, we cloned the 5' promoter of both PLD1 and PLD2 and analysed promoter activities. Results showed that EWS/Fli-1 and Fli-1 increase PLD2 gene expression by binding to an erythroblast transformation-specific domain (-126 to -120 bp from the transcription initiation site) of PLD2 promoter, which is the minimal and most powerful region. Electrophoresis mobility shift assay using truncated proteins showed that both DNA-binding domain and trans-activating domain were necessary for the enhanced gene expression of PLD2.
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Sobue S, Iwasaki T, Sugisaki C, Nagata K, Kikuchi R, Murakami M, Takagi A, Kojima T, Banno Y, Akao Y, Nozawa Y, Kannagi R, Suzuki M, Abe A, Naoe T, Murate T. Quantitative RT-PCR analysis of sphingolipid metabolic enzymes in acute leukemia and myelodysplastic syndromes. Leukemia 2006; 20:2042-6. [PMID: 16990773 DOI: 10.1038/sj.leu.2404386] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hoshikawa T, Ikebe T, Kikuchi R, Eguchi K. Effects of electrolyte in dye-sensitized solar cells and evaluation by impedance spectroscopy. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2006.01.053] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hayakawa T, Seino M, Goseki R, Hirai T, Kikuchi R, Kakimoto MA, Tokita M, Yokoyama H, Horiuchi S. Fabrication of Hierarchically Ordered Hybrid Structures over Multiple Length Scales via Direct Etching of Self-Organized Polyhedral Oligomeric Silsesquioxane (POSS) Functionalized Block Copolymer Films. Polym J 2006. [DOI: 10.1295/polymj.pj2005140] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Seino M, Yokomachi K, Hayakawa T, Kikuchi R, Kakimoto MA, Horiuchi S. Preparation of poly(N-isopropylacrylamide) grafted silica bead using hyperbranched polysiloxysilane as polymer brush and application to temperature-responsive HPLC. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.01.027] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Moriyama H, Kawahara K, Noguchi T, Kikuchi R, Wada S, Takeno S, Kashima K. Primary extramedullary plasmacytoma of the small intestine. A case report and review of the literature. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2006; 25:129-34. [PMID: 16761629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A case of primary extramedullary plasmacytoma of the small intestine in a 73-year-old Japanese woman was reported. The patient underwent local resection of the tumor, and showed no signs of local recurrence or dissemination of the disease after 28 months follow-up. The tumor cells had relatively large nuclei with distinct nucleoli and wide and slightly basophilic cytoplasm with a high N/C ratio which showed the morphology of atypical plasma cells. Immunohistochemical examination revealed that the tumor cells contained IgG gamma-type immunoglobulin in their cytoplasm but they did not contain IgA, IgM, IgD, and kappa-light chains. The tumor cells were also positive for CD79a and CD138 and negative for LCA, CD20 and CD45RO. These findings clearly indicated this case to be plasmacytoma.
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Takahashi A, Kakimoto MA, Tsurumi TA, Hao J, Li L, Kikuchi R, Miwa T, Ohno T, Yamada S, Takezawa Y. Polymer-Ceramic Nanocomposites Based on New Concepts for Embedded Capacitor. ACTA ACUST UNITED AC 2006. [DOI: 10.1541/ieejfms.126.1160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li Li, Takahashi A, Jianjun Hao, Kikuchi R, Hayakawa T, Tsurumi TA, Kakimoto MA. Novel polymer-ceramic nanocomposite based on new concepts for embedded capacitor application (I). ACTA ACUST UNITED AC 2005. [DOI: 10.1109/tcapt.2005.859740] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Matsui T, Kukino T, Kikuchi R, Eguchi K. An Intermediate Temperature Proton-Conducting Electrolyte Based on a CsH2PO4 / SiP2O7 Composite. ACTA ACUST UNITED AC 2005. [DOI: 10.1149/1.1883906] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ito S, Isowa N, Kikuchi R, Hasegawa S, Inui K, Wada H. [Mediastinal seminoma difficult to differentiate from thymoma through preoperative biopsy; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2004; 57:1070-3. [PMID: 15510825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
A case of a 36-year-old male patient with mediastinal seminoma is presented. He consulted a physician with a complaint of back pain and an abnormal shadow was detected on chest X-ray. Chest computed tomography (CT) scan revealed a pulmonary nodule and an anteriormediastinal mass. Preoperative percutaneous needle biopsy suggested that the tumor was similar to thymoma. Complete surgical excision of the mediastinal mass was performed. Immunohistochemical studies showed positive staining of the tumor cells with placental alkaline phosphatase. The final diagnosis was seminoma. Additional postoperative chemotherapy (cisplatin + etoposide) was done. He is alive and well 34 months after the operation.
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Hong CS, Jikei M, Kikuchi R, Kakimoto MA. Chemically Amplified Photosensitive Polybenzoxazoles Based ontert-Butoxycarbonyl Protected Hyperbranched Poly(o-hydroxyamide)s. Macromolecules 2003. [DOI: 10.1021/ma021692+] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kikuchi R, Noguchi T, Takeno S, Funada Y, Moriyama H, Uchida Y. Nuclear BAG-1 expression reflects malignant potential in colorectal carcinomas. Br J Cancer 2002; 87:1136-9. [PMID: 12402153 PMCID: PMC2376197 DOI: 10.1038/sj.bjc.6600579] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2002] [Revised: 07/29/2002] [Accepted: 08/15/2002] [Indexed: 12/13/2022] Open
Abstract
BAG-1 is a recently identified Bcl-2-interacting anti-apoptotic protein. The aim of our study was to investigate the immunohistochemical staining pattern of BAG-1 protein in patients with colorectal cancer and examine associations of BAG-1 expression with various clinicopathological factors and patient survival. Tumour samples were collected from 86 patients diagnosed with colorectal cancer. There was significant variation in the immunohistochemical staining patterns for BAG-1, including absent staining and staining of either the cytoplasm, nucleus or both. Twenty-one colorectal carcinomas (24.4%) exhibited a nuclear staining pattern whilst 56 (65.1%) exhibited cytoplasmic staining. The percentage of cases exhibiting nuclear BAG-1 positivity was significantly higher in distant metastasis-positive cases (55.6%) than in distant metastasis-negative cases (20.8%; P=0.036). Overall survival was significantly shorter for patients with tumours exhibiting BAG-1 positive nuclei than those with absent nuclear BAG-1-staining (P=0.011). In addition, the multivariate cox proportional hazard models indicated that nuclear BAG-1 expression was the only independent prognostic variable for mortality (P=0.013). These studies demonstrate that nuclear BAG-1 expression is a useful predictive factor for distant metastasis and a poor prognosis in patients with colorectal cancer.
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Takeno S, Noguchi T, Takahashi Y, Kikuchi R, Uchida Y, Yokoyama S. Immunohistochemical and clinicopathologic analysis of response to neoadjuvant therapy for esophageal squamous cell carcinoma. Dis Esophagus 2002; 14:149-54. [PMID: 11553227 DOI: 10.1046/j.1442-2050.2001.00174.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recently, neoadjuvant chemotherapy combined with radiation (NAT) has been used in the active treatment of progressive esophageal cancer (T4). However, many patients are resistant to supplemental therapy, and it is necessary to to be aware that side-effects may occur. Accordingly, to minimize adverse reactions and cost, it is important to determine the indications for NAT. We investigated 34 patients with T4 esophageal squamous cell carcinoma and examined the relation between the effects of NAT and immunohistochemical or additional clinicopathologic factors. There was no relation between clinicopathologic factors and immunohistochemical findings (p53 or hsp27 expression), and no clinicopathologic factors showed a relation to a supplemental therapeutic effect. In addition, there was no correlation between p53 staining and therapeutic effects (P=0.734). In contrast, there was a correlation (P=0.0058) between hsp27 staining and therapeutic effect. In conclusion, the usefulness of hsp27 immunostaining in predicting the therapeutic effect of NAT was confirmed in T4 esophageal squamous cell carcinoma.
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Takeno S, Noguchi T, Kikuchi R, Sato T, Uchida Y, Yokoyama S. Analysis of early (pT1) gastric cancer with submucosal invasion: surgical management and possibility to schedule less invasive surgery. Ann Surg Oncol 2001; 8:605-10. [PMID: 11508623 DOI: 10.1007/s10434-001-0605-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Early gastric cancer (EGC) is one of the popular targets of less invasive surgery. The aim of the present study is to clarify the possibility of scheduling a less invasive surgery for EGC cases with submucosal (SM) invasion. METHODS Eighty cases of EGC with SM invasion were analyzed clinicopathologically and immunohistochemically. Correlations between factors that reflect cancer progression and data from endoscopic examination were investigated. RESULTS Thirteen cases (16.3%) showed lymph node metastasis and the numbers of metastasis-positive lymph nodes ranged from 1 to 18. Two cases showed lymph node metastasis not only in the perigastric area, but also along the left gastric artery and the common hepatic artery. Only the tumor size showed a significant correlation with lymph node metastasis (P = .014) using the data from preoperative endoscopic examination. With respect to p53 overexpression, there was no significant correlation with pathologic factors in EGC with SM invasion. The simple protuberance types that were <2 cm in diameter had no lymph node metastasis. CONCLUSIONS It seems difficult to predict the progression of EGC with SM invasion from the data currently obtained by preoperative endoscopic examination. It was suggested that less invasive surgery could be scheduled only for simple protuberance type cases that were <2 cm in diameter. Radical gastrectomy and D2 lymph node dissection is required, in open surgery or laparoscopic surgery, for any other type of EGC with SM invasion.
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Kikuchi R. Environmental management of sulfur trioxide emission: impact of SO3 on human health. ENVIRONMENTAL MANAGEMENT 2001; 27:837-844. [PMID: 11393318 DOI: 10.1007/s002670010192] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The major contributors to global acidification are sulfur oxides and nitrogen oxides emitted mostly by the burning of fossil fuels. From the scientific point of view, it is necessary to make a clear distinction between sulfur dioxide and sulfur trioxide when referring to sulfur oxides. These two air pollutants have different properties. This paper reports the following aspects: the strong effect of sulfur trioxide on local human health (a case study of asthma in Yokkaichi), the problem of corrosion caused by sulfur trioxide, the difference in analytical methods for determining sulfur dioxide concentrations and sulfur trioxide concentrations, and the difference in removal methods for sulfur dioxide and sulfur trioxide. An important initiative at the third European conference of environment ministers was that the issue of human health related to local air pollution should be given priority over that of global pollution. The declines in the emissions of sulfur dioxide and nitrogen oxides have mainly been effective in reducing acidification due to long-range transport. The reduction in sulfur trioxide may be more effective in improving local human health mentioned in the initiative.
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Takeno S, Noguchi T, Kikuchi R, Wada S, Sato T, Uchida Y. Immunohistochemical study of leukocyte infiltration and expression of hsp70 in esophageal squamous cell carcinoma. Oncol Rep 2001; 8:585-90. [PMID: 11295085 DOI: 10.3892/or.8.3.585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
It is reported that macrophages and CD4+ or CD8+ cytotoxic T cells have an important role in the suppression of cancer progression. The aim of this study was to clarify these immune responses in patients with esophageal cancer. We enrolled 28 patients with pT2 esophageal cancer that had been resected without preoperative adjuvant therapy. The correlations between the numbers of infiltrating CD4+, CD8+ and CD68+ cells, the expression of heat shock protein 70 (hsp70) and a variety of clinicopathologic factors were analyzed. The numbers of CD8+ T cells and CD68+ macrophages showed a significant positive correlation with tumor diameter (p = 0.01, p = 0.037) and the expression of hsp70 (p = 0.01, p = 0.02) and a negative correlation with lymph node metastasis (p = 0.0079, p < 0.0001). The expression of hsp70 exhibited a negative correlation with lymph node metastasis (p = 0.023). CD8+ T cells and CD68+ macrophages might have a suppressive function against esophageal cancer progression. Our results suggested that hsp70 might play an important role in the presentation of tumor specific antigens.
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Takeno S, Noguchi T, Kikuchi R, Sato T, Uchida Y, Yokoyama S. Analysis of the survival period in resectable stage IV gastric cancer. Ann Surg Oncol 2001; 8:215-21. [PMID: 11314937 DOI: 10.1007/s10434-001-0215-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Patients with stage IV gastric cancer usually have a poor prognosis, but some patients with resectable cancer survive for more than 5 years. We aimed to study the correlation of protein expression and survival in resectable stage IV gastric cancer. PATIENTS AND METHODS Tissue samples of 42 patients with resectable stage IV gastric cancer were stained immunohistochemically for the mutant p53 protein and heat shock protein-27 (hsp27). The correlation between protein expression and clinicopathological factors was investigated. Furthermore, prognostic value of each factor was analyzed. RESULTS Univariate analysis showed that pN factors (Japanese classification, P = .028; International Union Against Cancer classification, P = .024), blood vessel invasion (P = .043), hsp27 overexpression (P = .019), and the index of p53 and hsp27 overexpression (P = .0026) had a prognostic influence. Only Lauren classification, however, revealed the prognostic influence in multivariate analysis (P = .046). CONCLUSIONS These results suggest that immunostaining of tumor specimens for p53 and hsp27 and clinicopathological analysis may help predict the survival of patients with resectable stage IV gastric cancer.
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Adzuhata T, Inotsume J, Okamura T, Kikuchi R, Ozeki T, Kajikawa M, Ogawa N. Evaluation of ionic pollutants of acid fog and rain using a factor analysis and back trajectories. ANAL SCI 2001; 17:71-6. [PMID: 11993680 DOI: 10.2116/analsci.17.71] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fog and rain water samples were collected at the same time in the Akita Hachimantai mountain range in northern Japan from June to September in 1998 and 1999. The various ion concentrations in these samples were analyzed, and the fog droplet sizes were measured for each fog event. As the fog droplet size increased, the ion concentration decreased. The slope of log-log plots of the concentration versus the droplet size differed with the kind of ion. In order to characterize the air pollutant, moreover, these data were quantitatively analyzed by an oblique rotational factor analysis. We found that three factors were extracted as the air pollutant source: (NH4)2SO4, acids (HNO3 + H2SO4) and sea-salt. Combining the factor analysis with the 72 h back-trajectory at 850 hPa level, we found that the contribution of each factor varied with the transport pattern of air masses.
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Maruyama R, Noguchi T, Takano M, Takagi K, Morita N, Kikuchi R, Uchida Y. Usefulness of magnetic resonance imaging for diagnosing deep anorectal abscesses. Dis Colon Rectum 2000; 43:S2-5. [PMID: 11052470 DOI: 10.1007/bf02237218] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE We evaluated the usefulness of magnetic resonance imaging for the preoperative diagnosis of deep anorectal abscesses. METHODS Subjects were 21 patients with deep anorectal abscesses. Deep anorectal abscesses were classified into two types, ischiorectal and pelvirectal, according to their location. Patients were also classified into a single abscess group, which showed either an ischiorectal or pelvirectal abscess, and a double abscess group, which showed both ischiorectal and pelvirectal abscesses. The final diagnosis was made from surgical findings, and the types of deep anorectal abscesses determined by digital examination and magnetic resonance imaging were compared. RESULTS Sensitivity of ischiorectal abscesses (20 lesions) with digital examination and magnetic resonance imaging was 75 and 95 percent, respectively, and that of pelvirectal abscesses (10 lesions) with digital examination and magnetic resonance imaging was 60 and 70 percent, respectively. Sensitivity of the magnetic resonance imaging was significantly higher than that of digital examination in ischiorectal abscesses. Diagnostic accuracy of digital examination and magnetic resonance imaging were both 83 percent in the single abscess group (12 patients), whereas in the double abscess group (9 patients) it was 22 and 78 percent, respectively. The rate of accurate diagnosis of magnetic resonance imaging compared with digital examination in the double abscess group was significantly higher than that in the single abscess group. CONCLUSION Magnetic resonance imaging was useful for diagnosing and differentiating ischiorectal and pelvirectal abscesses.
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Chaki O, Yoshikata I, Kikuchi R, Nakayama M, Uchiyama Y, Hirahara F, Gorai I. The predictive value of biochemical markers of bone turnover for bone mineral density in postmenopausal Japanese women. J Bone Miner Res 2000; 15:1537-44. [PMID: 10934652 DOI: 10.1359/jbmr.2000.15.8.1537] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
To examine the predictive value of biochemical markers of bone turnover for bone loss pre- and postmenopausally, we measured two markers of bone formation, bone-specific alkaline phosphatase (BALP) and intact osteocalcin (OC); four markers of bone resorption, urinary cross-linked N-telopeptides of type I collagen (NTx), type I collagen C-telopeptide breakdown products (CTx), hydroxylysylpyridinoline (HP) and lysylpyridinoline (LP); serum OC N-terminal (OC-N); and two serum cytokines, soluble interleukin-6 receptor (sIL-6R) and IL-1r antagonist at baseline and 1 year, as well as lumbar spine bone mineral density (BMD) at baseline and 1, 2, 3, 4, and 5 years after trial in 82 premenopausal (44.8 +/- 5.4 years old) and 325 postmenopausal (60.2 +/- 6.1 years old) healthy Japanese women. In premenopausal women, stratification of the baseline value of each biochemical marker into quartiles did not cause any significant difference in the change in BMD. Stratification of the NTx baseline value in postmenopausal women showed significant differences in rate of bone loss to the first year among those subjects with each quartile (Q1 [0.28 +/- 0.28%], Q2 [-0.32 +/- 0.34%], Q3 [-1.50 +/- 0.31%], and Q4 [-2.43 +/- 0.35%]) except for the difference between Q1 and Q2. The predictive value of NTx for BMD was greater in early postmenopausal women within 5 years after menopause than in late postmenopausal women with more than 5 years since menopause (YSM). Quartile analysis of the other biochemical markers and serum cytokines did not show any significant capacity for differentiating between bone loss rates. Moreover, when the changes in the lumbar spine BMD to the second and third years were stratified into quartiles by the baseline NTx, the ratios of bone loss to the second and the third years were significantly higher in those women with higher NTx (Q4; -3.15 +/- 0.56% and -4.06 +/- 0.57%, respectively) than in those with lower NTx (Q1; -0.74 +/- 0.44% and -1.03 +/- 0.51%, respectively). In conclusion, baseline urinary NTx was the most sensitive predictor of bone loss in the lumbar spine after 1, 2, and 3 years. Markers of bone resorption can be used clinically to predict future BMD in postmenopausal women.
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Kikuchi R, Noguchi T, Takeno S, Kubo N, Uchida Y. Immunohistochemical detection of membrane-type-1-matrix metalloproteinase in colorectal carcinoma. Br J Cancer 2000; 83:215-8. [PMID: 10901373 PMCID: PMC2363481 DOI: 10.1054/bjoc.2000.1195] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We investigated whether the expression of membrane-type-1 matrix metalloproteinase (MT1-MMP), matrix metalloproteinase-2 (MMP-2) and tissue inhibitor of metalloproteinase-2 (TIMP-2) was consistent with the proposed roles of these proteins in promoting metastasis in colorectal cancer. The expression of MT1-MMP was significantly more frequent in deeply invasive carcinomas (P = 0.007) and in cases of vascular invasion (P = 0.02). The frequency of detection of MMP-2 in the stroma was much greater in vascular invasion-positive cases (42%) than in negative cases (20%; P = 0.02). The rate of detection of TIMP-2 in tumour cell cytoplasm increased with the depth of invasion (P = 0.03). TIMP-2 in the stroma was found more frequently in tumours with lymphatic invasion and lymph node metastasis (P < 0.05). Significant correlations were found between detection of MT1-MMP and MMP-2 in tumour cell cytoplasm (P < 0.05), of MT1-MMP and TIMP-2 in tumour cell cytoplasm (P < 0.01), and of MMP-2 and TIMP-2 in tumour cell cytoplasm (P < 0.01). Immunohistochemical detection of MT1-MMP and TIMP-2 might be useful for monitoring infiltration in colorectal carcinoma but is not correlated with distant metastases.
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Higashi T, Miura K, Kikuchi R, Shimada K, Hiyamizu H, Ooi H, Iwabuchi Y, Hatakeyama S, Kubodera N. Characterization of new conjugated metabolites in bile of rats administered 24,25-dihydroxyvitamin D(3) and 25-hydroxyvitamin D(3). Steroids 2000; 65:281-94. [PMID: 10751640 DOI: 10.1016/s0039-128x(00)00087-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The characterization of new conjugated vitamin D metabolites in rat bile was performed using HPLC, liquid chromatography/tandem mass spectrometry combined derivatization, and GC-MS. After the administration of 24,25-dihydroxyvitamin D(3) to rats, 23, 25-dihydroxy-24-oxovitamin D(3) 23-glucuronide, 3-epi-24, 25-dihydroxyvitamin D(3) 24-glucuronide, and 24,25-dihydroxyvitamin D(3) 3-sulfate were obtained as new biliary metabolites together with 24,25-dihydroxyvitamin D(3) 3- and 24-glucuronides. The above metabolites, except 24,25-dihydroxyvitamin D(3) 3-glucuronide, were obtained from rats dosed with 25-hydroxyvitamin D(3). 23, 25-Dihydroxyvitamin D(3) 23-glucuronide was also obtained from the bile of rats administered 25-hydroxyvitamin D(3) in addition to its 3-glucuronide, 25-glucuronide, and 3-sulfate. Thus, it was found that 24,25-dihydroxyvitamin D(3) and 25-hydroxyvitamin D(3) were directly conjugated as glucuronide and sulfate, whereas at the C-23 position, they were hydroxylated and then conjugated. Furthermore, we found that the C-3 epimerization acts as one of the important pathways in vitamin D metabolism.
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