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Kumada T, Toyoda H, Kiriyama S, Sone Y, Tanikawa M, Hisanaga Y, Kanamori A, Atsumi H, Takagi M, Arakawa T, Fujimori M. Incidence of hepatocellular carcinoma in patients with chronic hepatitis B virus infection who have normal alanine aminotransferase values. J Med Virol 2010; 82:539-45. [DOI: 10.1002/jmv.21686] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Toyoda H, Kumada T, Kiriyama S, Tanikawa M, Hisanaga Y, Kanamori A, Tada T, Takagi M, Hiramatsu T, Hosokawa T, Arakawa T, Fujimori M. Transient reappearance of serum hepatitis C virus RNA observed by real-time PCR during antiviral therapy with peginterferon and ribavirin in patients with HCV genotype 1b. J Clin Virol 2010; 47:258-62. [PMID: 20116330 DOI: 10.1016/j.jcv.2009.12.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Revised: 12/21/2009] [Accepted: 12/28/2009] [Indexed: 10/19/2022]
Abstract
BACKGROUND The "response-guided therapy" based on response of hepatitis C virus (HCV) during antiviral combination therapy with peginterferon and ribavirin is important for patients with HCV genotype 1. However, the sensitivity of previous assays for serum HCV RNA is limited. OBJECTIVES We evaluated the changes in serum HCV RNA during the combination therapy using a novel method for measurement based on real-time PCR. STUDY DESIGN Changes in serum HCV RNA during the combination therapy were reanalyzed using TaqMan PCR assay in 144 patients with chronic HCV genotype 1b infection who underwent the therapy under HCV RNA monitoring with the Amplicor Monitor assay. Treatment duration was elongated from 48 weeks to 72 weeks in 17 patients based on the time when serum HCV RNA became negative. RESULTS In 9 of 144 (6.3%) patients, serum HCV RNA transiently appeared again on the TaqMan PCR assay after having previously become negative. At the point of reappearance, the Amplicor Monitor assay gave a negative result in all patients, and no flare of alanine aminotransferase activity was observed. Each of the 9 patients achieved an end-of-treatment response but relapsed after the end of treatment, including 3 patients in whom the treatment duration was elongated to 72 weeks. CONCLUSIONS Attention should be paid to this phenomenon in the antiviral treatment for patients with HCV infection. The transient reappearance of HCV RNA in the serum indicates a high likelihood of relapse, and is likely to be missed without frequent measurements by a sensitive detection method.
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Fujita T, Nagura N, Koshikawa K, Nishimura H, Ito K, Izumi H, Kohno K, Fujimori M. Increased Nuclear Localization of Transcription Factor Y-Box Binding Protein 1 Accompanied by Up-Regulation of P-Glycoprotein in Breast Cancer Pretreated with Paclitaxel. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-1141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: The Y-box binding protein 1 (YB-1) regulates expression of P-glycoprotein (P-gp) encoded by the MDR1 gene. There have been no previous studies regarding the involvement of YB-1 in the development of resistance to paclitaxel. The present study was performed to examine how paclitaxel affects the localization and expression of YB-1 in breast cancer.Experimental Design: We evaluated the expression and localization of YB-1 and P-gp in breast cancer tissues obtained from 27 patients before and after treatment with paclitaxel. The effect of paclitaxel on localization of cellular YB-1 was examined by using GFP-YB-1. Interaction of YB-1 with the Y-box motif of the MDR1 promoters was studied by EMSA. The effects of paclitaxel on MDR1 promoter activity were examined by luciferase assay.Results: Of 27 breast cancer tissues treated with paclitaxel, nine (33%) showed translocation of YB-1 from the cytoplasm to the nucleus together with increased expression of P-gp during the course of treatment. Twelve breast cancer tissues (44%) showed neither translocation of YB-1 nor increased expression of P-gp. Nuclear translocation of YB-1 was correlated significantly with increased expression of P-gp (P=0.0037). Confocal analysis indicated that paclitaxel induced nuclear translocation of green fluorescent fused YB-1 in MCF7 cells. Furthermore, binding of YB-1 to the Y-box of MDR1 promoter was increased in response to treatment with paclitaxel. In addition, MDR1 promoter activity was significantly up-regulated by paclitaxel in MCF7 cells (p< 0.001).Conclusions: The results of the present study suggested that YB-1 may be involved in the development of resistance to paclitaxel in breast cancer.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 1141.
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Toyoda H, Kumada T, Kiriyama S, Sone Y, Tanikawa M, Hisanaga Y, Kanamori A, Atsumi H, Takagi M, Nakano S, Arakawa T, Fujimori M. Differences in viral kinetics between genotypes 1 and 2 of hepatitis C virus after single administration of standard interferon-alpha. J Med Virol 2009; 81:1354-62. [DOI: 10.1002/jmv.21533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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55
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Kumada T, Toyoda H, Kiriyama S, Sone Y, Tanikawa M, Hisanaga Y, Kanamori A, Atsumi H, Takagi M, Nakano S, Arakawa T, Fujimori M. Incidence of hepatocellular carcinoma in hepatitis C carriers with normal alanine aminotransferase levels. J Hepatol 2009; 50:729-35. [PMID: 19232448 DOI: 10.1016/j.jhep.2008.11.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2008] [Revised: 11/03/2008] [Accepted: 11/08/2008] [Indexed: 12/18/2022]
Abstract
BACKGROUND/AIMS This study sought to identify the independent risk factors involved in the development of hepatocellular carcinoma (HCC) in patients with chronic hepatitis C virus (HCV) infection who have normal alanine aminotransferase (ALT) levels. METHODS A total of 519 patients with average ALT integration values less than or equal to 40 IU/L over 10 years were included. Baseline ultrasound was done in all patients and 68 patients underwent liver biopsy at the start of this study. Factors associated with the cumulative incidence of HCC were determined. RESULTS HCC occurred in 48 of 519 patients (9.2%). The following factors were significantly associated with the incidence of HCC: age>65 years (adjusted hazard ratio: 2.006 [95% confidence interval: 1.078-3.733]), ALT>20 IU/L (6.242 [1.499-25.987]), platelet count<15.0x10(4)/m(3) (2.675 [1.407-5.085]), total bilirubin>1.2mg/dL (2.798 [1.257-6.228]), ALP>338 IU/L (2.486 [1.327-4.657]), and total albumin<3.5g/dl (2.707 [1.177-6.223]). The 5- and 10-year cumulative incidences of HCC were 4.4% and 26.5% in patients with ALT>20 IU/L and platelet count<15.0x10(4)/m(3), respectively. CONCLUSIONS High ALT level and low platelet count are closely associated with the development of hepatocarcinogenesis. Therefore, individuals within this group are candidates for antiviral therapy.
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Kumada T, Toyoda H, Kiriyama S, Sone Y, Tanikawa M, Hisanaga Y, Kanamori A, Atsumi H, Takagi M, Nakano S, Arakawa T, Fujimori M. Long-term follow-up of patients with hepatitis C with a normal alanine aminotransferase. J Med Virol 2009; 81:446-51. [DOI: 10.1002/jmv.21342] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ito K, Kurai M, Fujimori M, Hama Y, Shingu K, Kobayashi S, Yamagami O, Matsuyama I, Tsuchiya S, Amano J. Bilateral synchronous spindle cell, apocrine and scirrhous carcinoma breast cancer in a case or malignant lymphoma. Breast Cancer 2008; 5:411-6. [PMID: 18843558 DOI: 10.1007/bf02967440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/1998] [Accepted: 07/17/1998] [Indexed: 11/26/2022]
Abstract
An unusual case of synchronous bilateral breast cancer occurring during combination chemotherapy and radiation to the outside of the breast for malignant lymphoma is reported. Two histologically rare carcinomas, spindle cell carcinoma and apocrine carcinoma, were observed in this case. A 77-year-old woman, who had been treated for stage IIIA non-Hodgkin's lymphoma, developed bilateral breast tumors. Aspiration biopsy cytology findings of the tumor in the left breast showed several clusters of adenocarcinoma cells and some large atypical spindle shaped cells, which suggested spindle cell carcinoma. The cytologic findings of the right breast tumor were highly suggestive of scirrhous carcinoma. A modified radical mastectomy was performed on both breasts. Pathological examination disclosed two separate cancer lesions in the left breast. The lesion which had been detected before the operation, was a spindle cell carcinoma. Another lesion, detected for the first time by pathological examination, was an apocrine carcinoma. The lesion in the right breast was a scirrhous carcinoma. Since non-invasive foci were detected in these three cancer lesions, each lesion was thought to be a primary cancer. All dissected bilateral axillary lymph nodes showed malignant lymphoma. Immuno-histochemistry of the spindle cell carcinoma revealed positive immunoreactivity for cytokeratin, which suggested the epithelial as well as mesenchymal nature of this tumor. Synchronous existence of malignant lymphoma and three independent breast cancers including spindle cell carcinoma and apocrine carcinoma is very rare.
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Machida T, Fujita T, Ooo ML, Ohira M, Isogai E, Mihara M, Hirato J, Tomotsune D, Hirata T, Fujimori M, Adachi W, Nakagawara A. Increased expression of proapoptotic BMCC1, a novel gene with the BNIP2 and Cdc42GAP homology (BCH) domain, is associated with favorable prognosis in human neuroblastomas. Oncogene 2006; 25:1931-42. [PMID: 16288218 DOI: 10.1038/sj.onc.1209225] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Differential screening of the genes obtained from cDNA libraries of primary neuroblastomas (NBLs) between the favorable and unfavorable subsets has identified a novel gene BCH motif-containing molecule at the carboxyl terminal region 1 (BMCC1). Its 350 kDa protein product possessed a Bcl2-/adenovirus E1B nineteen kDa-interacting protein 2 (BNIP2) and Cdc42GAP homology domain in the COOH-terminus in addition to P-loop and a coiled-coil region near the NH2-terminus. High levels of BMCC1 expression were detected in the human nervous system as well as spinal cord, brain and dorsal root ganglion in mouse embryo. The immunohistochemical study revealed that BMCC1 was positively stained in the cytoplasm of favorable NBL cells but not in unfavorable ones with MYCN amplification. The quantitative real-time reverse transcription-PCR using 98 primary NBLs showed that high expression of BMCC1 was a significant indicator of favorable NBL. In primary culture of newborn mice superior cervical ganglion (SCG) neurons, mBMCC1 expression was downregulated after nerve growth factor (NGF)-induced differentiation, and upregulated during the NGF-depletion-induced apoptosis. Furthermore, the proapoptotic function of BMCC1 was also suggested by increased expression in CHP134 NBL cells undergoing apoptosis after treatment with retinoic acid, and by an enhanced apoptosis after depletion of NGF in the SCG neurons obtained from newborn mice transgenic with BMCC1 in primary culture. Thus, BMCC1 is a new member of prognostic factors for NBL and may play an important role in regulating differentiation, survival and aggressiveness of the tumor cells.
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Shah J, Forero A, Carlisle R, Triozzi P, LoBuglio A, Kuwabara T, Teitelbaum A, Fujimori M, Conry M. 189 PHASE 1 STUDY OF AN ANTI-GD3 MONOCLONAL ANTIBODY (KW-2871) IN PATIENTS WITH ADVANCED METASTATIC MELANOMA. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0008.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Nakaya N, Tsubono Y, Nishino Y, Hosokawa T, Fukudo S, Shibuya D, Akizuki N, Yoshikawa E, Kobayakawa M, Fujimori M, Saito-Nakaya K, Uchitomi Y, Tsuji I. Personality and cancer survival: the Miyagi cohort study. Br J Cancer 2005; 92:2089-94. [PMID: 15900301 PMCID: PMC2361779 DOI: 10.1038/sj.bjc.6602610] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
We tested the hypothesis that personality plays a role in cancer outcome in a population-based prospective cohort study in Japan. In July 1990, 41 442 residents of Japan completed a short form of the Eysenck Personality Questionnaire-Revised and a questionnaire on various health habits, and between January 1993 and December 1997, 890 incident cases of cancer were identified among them. These 890 cases were followed up until March 2001, and a total of 356 deaths from all causes was identified among them. Cox proportional-hazards regression was used to estimate the hazard ratio (HR) of death according to four score levels on each of four personality subscales (extraversion, neuroticism, psychoticism, and lie), with adjustment for potential confounding factors. Multivariable HRs of deaths from all causes for individuals in the highest score level on each personality subscale compared with those at the lowest level were 1.0 for extraversion (95% CI=0.8–1.4; Trend P=0.73), 1.1 for neuroticism (0.8–1.6; Trend P=0.24), 1.2 for psychoticism (0.9–1.6; Trend P=0.29), and 1.0 for lie (0.7–1.5; Trend P=0.90). The data obtained in this population-based prospective cohort study in Japan do not support the hypothesis that personality is associated with cancer survival.
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Shah J, Forero A, Carlisle R, Triozzi P, Lobuglio A, Kuwabara T, Teitelbaum A, Fujimori M, Conry M. Phase 1 study of an anti-GD3 monoclonal antibody, (KW-2871) in patients with advanced metastatic melanoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Morita T, Akechi T, Ikenaga M, Kizawa Y, Kohara H, Mukaiyama T, Nakaho T, Nakashima N, Shima Y, Matsubara T, Fujimori M, Uchitomi Y. Communication about the ending of anticancer treatment and transition to palliative care. Ann Oncol 2004; 15:1551-7. [PMID: 15367417 DOI: 10.1093/annonc/mdh386] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Communication about the ending of anticancer treatment and transition to palliative care is a difficult task for oncologists. The primary aims of this study were to clarify family-reported degree of emotional distress and the necessity for improvement in communication methods when communicating about the ending of anticancer treatment, and to identify factors contributing to the levels of emotional distress and the necessity for improvement. METHODS A multi-center questionnaire survey was conducted on 630 bereaved family members of cancer patents who received specialized palliative care in Japan. A total of 318 responses were analyzed (effective response rate, 62%). RESULTS Thirty-nine percent of the bereaved family members reported that they were 'very distressed' in receiving information about the ending of anticancer treatment, and 19% reported 'considerable' or 'much' improvement was necessary in the communication methods. High-level emotional distress was significantly associated with younger patient age, female family gender, the experience of the physician stating she/he could do nothing for the patient, the physician's unwillingness to explore their feelings, and prognostic disclosure of definite survival periods without probabilities or ranges. High levels of perceived necessity for improvement in the communication methods were significantly associated with the experience of the physician stating she/he could do nothing for the patient, physicians not explaining treatment goals in specific terms, physicians not pacing the explanation with the state of family preparation, physicians not being knowledgeable about the most advanced treatments, and the atmosphere not being relaxing enough to ask questions. CONCLUSIONS In receiving the information about ending anticancer treatment, a considerable number of families experienced high levels of emotional distress and felt a need for improvement of the communication methods. The strategies to alleviate family distress could include: (i) assuring that physicians will do their best to achieve specific goals, without saying that they can do nothing for the patient; (ii) providing information, including estimated prognosis, in careful consideration of families' preparation and the uncertainty for each patient; (iii) exploring families' emotions and providing emotional support; (iv) acquiring knowledge about advanced treatments; and (v) making the atmosphere relaxing enough to allow families to ask questions.
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Sato N, Sano M, Hino M, Kimura M, Fujimori M, Ito KI, Maeno K, Nakagomi H, Negishi K. Neoadjuvant paclitaxel for operable breast cancer: Multicenter phase II trial with clinical outcomes, analysis of mutation of the class I β-tubulin gene. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Suwa Y, Matsuura S, Fujimori M, Heike S, Onogi T, Kajiyama H, Hitosugi T, Kitazawa K, Uda T, Hashizume T. Dopant-pair structures segregated on a hydrogen-terminated Si(100) surface. PHYSICAL REVIEW LETTERS 2003; 90:156101. [PMID: 12732053 DOI: 10.1103/physrevlett.90.156101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2002] [Indexed: 05/24/2023]
Abstract
Novel atomic structures on a H-terminated Si(100)-(2x1)-H surface were found using scanning tunneling microscopy (STM). The structures are distinguishable only from Si dimers in empty-state STM images. They were observed on arsenic- and phosphorus-doped substrates, but not on boron-doped substrates. Surface density of these structures was found to be proportional to the dopant density in the substrate. First-principles calculations clarify that they are consisting of dopant pairs that are segregated from the bulk material. Hydrogen atoms attached to the dopant pair are found to flip between two positions on the surface due to a quantum effect.
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Takashima S, Matsushita T, Takayama F, Kadoya M, Fujimori M, Kobayashi T. Prognostic significance of magnetic resonance findings in advanced papillary thyroid cancer. Thyroid 2001; 11:1153-9. [PMID: 12186503 DOI: 10.1089/10507250152741000] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We assessed the prognostic importance of magnetic resonance (MR) findings in locally advanced papillary thyroid cancer. MR findings, clinical data, and pathologic (and surgical) data for 66 patients, including 51 women and 15 men with a mean age of 57 years, who had primary surgery for papillary thyroid cancers were correlated with prognosis. Mean follow-up was 27.5 months (range, 5-117 months). Recurrence was seen in 18 patients (27%). In univariate analyses, age of 60 years or more (p = 0.0066), male gender (p = 0.0373), six MR findings (tumor size of > or = 4 cm ([p = 0.0002], ill-defined margins ([p < 0.0001], tumor extension of the trachea [p = 0.0337], carotoid artery [p = 0.0028]), esophagus [p < 0.0001], and lymph nodes [p = 0.0005]), and three pathologic findings (tumor extension of soft tissues [p = 0.0288], carotid artery [p = 0.0013], and esophagus [p < 0.0001]) had a significant adverse effect on disease-free survival. In multivariate analyses, tumor size (p = 0.0169) and nodal metastasis (p = 0.0393) determined on MR imaging and pathologic esophageal invasion (p = 0.0016) were the only significant independent variables. Esophageal invasion was accurately diagnosed with MR imaging (94% accuracy). MR findings may contain prognostic importance of locally advanced papillary thyroid cancer.
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Fujimori M, Ikeda S, Shimizu Y, Okajima M, Asahara T. Accumulation of beta-catenin protein and mutations in exon 3 of beta-catenin gene in gastrointestinal carcinoid tumor. Cancer Res 2001; 61:6656-9. [PMID: 11559529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
The molecular basis of carcinogenesis in gastrointestinal carcinoid tumors is not well understood. To clarify the contribution of the Wnt/beta-catenin signaling to this type of carcinogenesis, we investigated 72 cases of gastrointestinal carcinoid tumor both immunohistochemically and by direct sequencing of beta-catenin. Accumulation of beta-catenin in the cytoplasm and/or nucleus was observed in 57 cases (79.2%). We also detected mutations in exon 3 of beta-catenin in 27 cases (37.5%) and one mutation in APC (1.4%). Our results suggest that alterations in the Wnt/beta-catenin signaling pathway may be involved in the development of gastrointestinal carcinoid tumors.
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Matsumoto E, Ohigashi Y, Fujimori M, Mori E. The processing of global and local visual information in Alzheimer's disease. Behav Neurol 2001; 12:119-25. [PMID: 11455049 DOI: 10.1155/2000/683156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We examined the quantitative and qualitative difference of the pattern with visuo-cognitive processing impairment in patients with early onset AD (EOAD) and late onset AD (LOAD). We use a visual attention task introduced by Navon (1977) to examine the function to integrate local visual stimuli into global image. Although the ability to identify solid digits ether of large and small size presented at the same exposure duration, EOAD performance was poor in the global perception especially at the short duration (20~msec). We provide evidence that this dysfunction is attribute to the AD pathology specific to early onset type.
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Ohtake H, Fujii T, Yamadori A, Fujimori M, Hayakawa Y, Suzuki K. The influence of misnaming on object recognition: a case of multimodal agnosia. Cortex 2001; 37:175-86. [PMID: 11394719 DOI: 10.1016/s0010-9452(08)70566-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We present a case of multimodal agnosia in the visual and tactile modality due to an infarction in the territory of the left posterior cerebral artery. The patient's ability to recognize objects fluctuated depending on his verbal activity. When he misnamed presented objects, he tended to use them and to draw them in keeping with the wrong name. We submit that the mechanism causing associative agnosia is more dynamic than it was hitherto considered. It originates from the rivalry between top-down central regulation and bottom-up peripheral flow.
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Asanuma K, Kusama R, Maruyama M, Fujimori M, Amano J. Macroscopic extranodal invasion is a risk factor for tumor recurrence in papillary thyroid cancer. Cancer Lett 2001; 164:85-9. [PMID: 11166919 DOI: 10.1016/s0304-3835(00)00698-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Papillary thyroid cancer patients, upon whom curative operation was performed, were investigated to clarify whether or not macroscopic extranodal invasion is a risk factor for recurrence. They were divided into three groups: group A, patients whose primary tumor showed extrathyroidal invasion (n=31); group B, those whose metastatic lymph nodes showed extranodal invasion (n=6); group C, those who showed both extrathyroidal and extranodal invasion (n=9). Recurrence was significantly higher in groups B and C than in group A (P<0.05). It was concluded that macroscopic extranodal invasion to the adjacent structures was a risk factor for recurrence in patients with papillary thyroid cancer.
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Shingu K, Kobayashi S, Yokoyama S, Fujimori M, Asanuma K, Ito KI, Hama Y, Maruyama M, Kusama R, Amano J. The likely transformation of papillary thyroid carcinoma into anaplastic carcinoma during postoperative radioactive iodine-131 therapy: report of a case. Surg Today 2001; 30:910-3. [PMID: 11059731 DOI: 10.1007/s005950070043] [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: 12/20/2022]
Abstract
We report herein a case of papillary carcinoma which appeared to transform into anaplastic carcinoma during postoperative radioactive iodine-131 (131I) therapy. A 67-year-old man who was diagnosed as having papillary thyroid carcinoma with bilateral neck lymph node involvement and multiple lung metastases underwent total thyroidectomy prior to 131I therapy. Immediately after a second course of 131I therapy, the patient complained of right neck pain and swelling, and a biopsy of the swollen neck lymph node was taken. Histologic examination of this biopsy specimen revealed anaplastic carcinoma. With p53 immunohistochemical staining, both the primary tumor and the biopsy specimen were positive. We speculate that first, some DNA damage in tumor cells was induced by the initial 131I therapy, but neither DNA repair nor cell apoptosis occurred because the p53 gene was already mutated; then further DNA damage was induced by the second 131I therapy, leading to anaplastic transformation.
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Yazawa K, Fujimori M, Nakamura T, Sasaki T, Amano J, Kano Y, Taniguchi S. Bifidobacterium longum as a delivery system for gene therapy of chemically induced rat mammary tumors. Breast Cancer Res Treat 2001; 66:165-70. [PMID: 11437103 DOI: 10.1023/a:1010644217648] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A fundamental obstacle in cancer gene therapy is the specific targeting of therapy directly to a solid tumor, and no systemic delivery system yet exists. A strain of domestic bacteria, Bifidobacterium longum, which is nonpathogenic and anaerobic, selectively localized to and proliferated in 7,12-dimethylbenz[a]anthracene-induced rat mammary tumors after systemic application. We further ascertained the tumor specificity of genetically engineered, as well as wild-type, Bifidobacterium longum. This is the first demonstration that Bifidobacterium longum can be utilized as a specific gene delivery vector for gene therapy on solid breast tumors.
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Enomoto F, Kim R, Okazoe S, Fujimori M, Ichikawa G. [Effects of macrolides on cultured rat vascular cells]. THE JAPANESE JOURNAL OF ANTIBIOTICS 2001; 54 Suppl A:130-1. [PMID: 11439891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Asanuma K, Kobayashi S, Shingu K, Hama Y, Yokoyama S, Fujimori M, Amano J. The rate of tumour growth does not distinguish between malignant and benign thyroid nodules. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 2001; 167:102-5. [PMID: 11266247 DOI: 10.1080/110241501750070538] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To clarify whether or not the rate of tumour growth is a useful measure for distinguishing papillary thyroid cancer from benign nodules. DESIGN Retrospective study. SETTING Teaching hospital, Japan. SUBJECTS Fourteen patients with 27 nodules (<20 mm) followed up for 20 months or more. INTERVENTIONS High resolution ultrasonography (US). MAIN OUTCOME MEASURE Growth rate. RESULTS There were 15 papillary thyroid cancers and 12 benign nodules. The median tumour diameters at the first and the last US examination were 9.0 mm (range 6-19) and 9.0 mm (range 5-21) in papillary thyroid cancers followed up for 37 months (range 21-85), and 11.5 mm (range 4-19) and 11.5 mm (range 5-23) in benign nodules followed up for 38 months (range 20-84), respectively. CONCLUSION The rate of growth of thyroid nodules as documented by ultrasound did not prove to be useful in distinguishing between malignancy and benign disease of small thyroid nodules (<20 mm).
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Fujimori M, Imamura T, Hirono N, Ishii K, Sasaki M, Mori E. Disturbances of spatial vision and object vision correlate differently with regional cerebral glucose metabolism in Alzheimer's disease. Neuropsychologia 2000; 38:1356-61. [PMID: 10869578 DOI: 10.1016/s0028-3932(00)00060-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
There is evidence of two neuronal systems for visual cognition which are referred to as spatial vision and object vision. We subjected 49 patients with mild-to-moderate probable Alzheimer's disease (AD) to tasks associated with these two types of visual cognition. Visual counting was employed as a task to assess visuospatial recognition. Identification of overlapping figures and discrimination of visual forms were used as visuoperceptual tasks that require an ability to recognize objects. Regional cerebral glucose metabolism (rCMRglc) of the subjects was also determined by positron emission tomography. Multivariate statistics controlling for the confounding factors assessed the correlation between the task performances and the rCMRglc. The visual counting score significantly correlated with the metabolic rate of the bilateral inferior parietal lobules. On the other hand, the scores of the visuoperceptual tasks significantly correlated with the metabolic rate of the right middle temporal gyrus and the right inferior parietal lobule. The present study showed that visuospatial disturbance was related to bilateral parietal metabolism, and that visuoperceptual disturbance was related to right temporo-parietal metabolism in patients with mild-to-moderate AD.
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Kusama R, Fujimori M, Matsuyama I, Fu L, Ishii K, Hama Y, Asanuma K, Shingu K, Kobayashi S, Tsuchiya S. Clinicopathological characteristics of atypical cystic duct (ACD) of the breast: assessment of ACD as a precancerous lesion. Pathol Int 2000; 50:793-800. [PMID: 11107051 DOI: 10.1046/j.1440-1827.2000.01121.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
To clarify the clinicopathological features of an atypical cystic duct (ACD) as defined by Tsuchiya's criteria as a precancerous lesion of the breast, we used 200 whole mammary gland serial sections of breast cancer. Forty-four (22%) of the 200 breast cancer patients had ACD breast lesions. The frequency of patients with ACD increased in premenopausal women (P = 0.001). There was no correlation between the ACD-present group and the ACD-absent group for immunohistochemical status of the estrogen receptor (ER), progesterone receptor (PgR), p53, or c-erbB2; Ki-67 labeling index of cancer tissues; size of tumor, or lymph node metastases. A number of ACD lesions displayed continuity to cancer lesions. In 500 serial sections of a paraffin-embedded tissue of a ACD case at 3 microm intervals, an apparent transition from ACD into ductal carcinoma in situ was observed. Immunohistochemical analysis using alpha-smooth muscle actin showed that myoepithelial cells of ACD stained strongly, and their nuclei and cytoplasm were thinning. In 16 of the 44 (36%) ACD-present patients, carcinoma cells stained positive for p53. Within those 16 cases, 12 cases (75%) were positive for p53 in ACD lesions. There was a significant correlation between the expression of p53 protein in malignant cells and ACD (P = 0.001). All 44 ACD lesions had no staining of c-erbB2, regardless of staining in malignant lesions. The mean Ki-67 labeling index of ACD lesions was low (0.3%), suggesting that ACD had a low proliferative rate. We suggest that ACD is the precancerous breast lesion because of a histologic continuum between ACD and malignancy, and because of p53 protein expression in ACD.
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