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Tsujimura Y, Nakayama T, Ishizaki T, Takahashi Y, Miyazaki K, Satoh T, Ikeda S, Kimura S. P2-308 The characteristics of people who had been screened to be hyperglycaemic but did not visit clinics: a retrospective cohort study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976k.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Iida K, Nakayama K, Rahman MT, Rahman M, Ishikawa M, Katagiri A, Yeasmin S, Otsuki Y, Kobayashi H, Nakayama S, Miyazaki K. EGFR gene amplification is related to adverse clinical outcomes in cervical squamous cell carcinoma, making the EGFR pathway a novel therapeutic target. Br J Cancer 2011; 105:420-7. [PMID: 21730982 PMCID: PMC3172895 DOI: 10.1038/bjc.2011.222] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background: The aim of this study was to investigate the patterns of epidermal growth factor receptor (EGFR) overexpression, EGFR gene amplification, and the presence of activating mutations in the tyrosine kinase domain of this gene in squamous cell carcinomas and adenocarcinomas/adenosquamous carcinomas of the uterine cervix. Methods: The EGFR expression, amplification, and mutation in cervical carcinomas were assessed by immunohistochemistry, fluorescence in situ hybridisation, and PCR–SSCP, respectively, and correlated with clinical data collected by a retrospective chart review. A functional assessment was performed by inactivating EGFR in cervical cancer cells with the potent inhibitor AG1478. Results: Immunohistochemical analysis revealed that 6 out of 59 (10.2%) cervical squamous cell carcinomas showed significant amplification of the EGFR locus, whereas none of the 52 adeno/adenosquamous cell carcinomas had detectable EGFR amplification (P<0.05). The EGFR amplification significantly correlated with shorter overall survival (P=0.001) in cervical squamous cell carcinomas. Multivariate analysis showed that EGFR gene amplification was an independent prognostic factor for overall survival (P=0.011). None of the squamous cell carcinomas (0%: 0 out of 32) had detectable oncogenic mutations in EGFR exons 18 through 21. The frequencies of KRAS and BRAF mutations were very low in both squamous and adeno/adenosquamous cell carcinomas. Sensitivity of cervical cancer cells to AG1478 depended on the presence of EGFR overexpression. AG1478-induced EGFR inactivation in cell lines with EGFR overexpression significantly suppressed tumour development and progression in a mouse xenograft model. Conclusion: Our data suggest that EGFR signalling is important in a subset of cervical squamous cell carcinomas and that anti-EGFR therapy may benefit patients who carry the 7p11.2 amplicon in their tumours.
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Suzuki Y, Shichishima T, Yamashiro Y, Kimura H, Ishii R, Miyazaki K, Horie R, Moriya T, Hattori Y. A patient with acute lymphoblastic leukaemia presenting with an extremely high level (21.0%) of HbA1c. Ann Clin Biochem 2011; 48:474-7. [DOI: 10.1258/acb.2011.010121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Aoki S, Miyazaki K. Persistent pulsation in a fetal great vessel after complete cardiac arrest. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2011; 37:618-619. [PMID: 21308828 DOI: 10.1002/uog.8857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Koh TS, Thng CH, Hartono S, Kwek JW, Khoo JBK, Miyazaki K, Collins DJ, Orton MR, Leach MO, Lewington V, Koh DM. Dynamic contrast-enhanced MRI of neuroendocrine hepatic metastases: A feasibility study using a dual-input two-compartment model. Magn Reson Med 2011; 65:250-60. [PMID: 20860001 DOI: 10.1002/mrm.22596] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Neuroendocrine hepatic metastases exhibit various contrast uptake enhancement patterns in dynamic contrast-enhanced MRI. Using a dual-input two-compartment distributed parameter model, we analyzed the dynamic contrast-enhanced MRI datasets of seven patient study cases with the aim to relate the tumor contrast uptake patterns to parameters of tumor microvasculature. Simulation studies were also performed to provide further insights into the effects of individual microcirculatory parameter on the tumor concentration-time curves. Although the tumor contrast uptake patterns can be influenced by many parameters, initial results indicate that hepatic blood flow and the ratio of fractional vascular volume to fractional interstitial volume may potentially distinguish between the patterns of neuroendocrine hepatic metastases.
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Iseki K, Hirano T, Fukushi Y, Kitamura Y, Miyazaki S, Takada M, Sugawara M, Saitoh H, Miyazaki K. The pH Dependent Uptake of Enoxacin by Rat Intestinal Brush-border Membrane Vesicles. J Pharm Pharmacol 2011; 44:722-6. [PMID: 1360522 DOI: 10.1111/j.2042-7158.1992.tb05507.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Abstract
The mechanism of the intestinal transport of enoxacin, an orally active fluoroquinolone antibiotic, has been investigated using brush-border membrane vesicles isolated from rat small intestine. The initial rate and time-course of enoxacin uptake were considerably dependent upon the medium pH (pH 5·5 > pH 7·5) and upon the percent ionization of the carboxyl group (pKa 6·2, anionic charge), namely, the degree of uptake of cationic form was higher than that of the zwitterionic form. There was evidence of transport into the intravesicular space as shown by the effect of extravesicular medium osmolarity on enoxacin uptake at steady state (30 min). This transport across the brush-border membrane was stimulated by the valinomycin-induced K+-diffusion potential (interior negative) and an outward H+-diffusion potential. Furthermore, changing the pH of the medium from 5·5 to 7·5 significantly decreased the effect of valinomycin-induced K+-diffusion potential on the enoxacin uptake. These results suggest that the uptake behaviour of the cationic form of enoxacin plays an important role in the intestinal absorption process of enoxacin.
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Sugawara M, Toda T, Iseki K, Miyazaki K, Shiroto H, Kondo Y, Uchino J. Transport Characteristics of Cephalosporin Antibiotics Across Intestinal Brush-border Membrane in Man, Rat and Rabbit. J Pharm Pharmacol 2011; 44:968-72. [PMID: 1361560 DOI: 10.1111/j.2042-7158.1992.tb07075.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
The uptake of orally active cephalosporins, ceftibuten and cephradine, by intestinal brush-border membrane vesicles isolated from man, rat and rabbit was studied. In the presence of an inward H+ gradient, ceftibuten but not cephradine was taken up into intestinal brush-border membrane vesicles of man and rat against the concentration gradient (overshoot phenomenon). In rabbit jejunal brush-border membrane vesicles, the uptake of both cephalosporins in the presence of an inward H+ gradient exhibited the overshoot phenomenon. In human and rat vesicles, the initial uptake of ceftibuten was strongly inhibited by compound V, an analogue of ceftibuten, but the uptake of cephradine was not affected by any of the cephalosporins tested, whereas in the rabbit brush-border membrane vesicles, initial uptake of both ceftibuten and cephradine were markedly inhibited by all cephalosporins and dipeptides used. These results suggest that the transport characteristics of human and rat intestinal brush-border membrane for cephalosporins are comparable, and that rabbit is an inadequate animal for investigating the transport characteristics of β-lactam antibiotics.
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Hirai M, Niimi K, Miyazaki K, Iwata H, Sugimoto I, Ishibashi H, Ota T, Kominami Y. Development of a device to determine the stiffness of elastic garments and bandages. Phlebology 2011; 26:285-91. [DOI: 10.1258/phleb.2010.010041] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objective To evaluate the reliability of a newly developed stiffness-determining device, composed of a leg mannequin and air-pack type analyser, for measuring the interface pressure. Method The correlation of stiffness values obtained employing the Hohenstein method and this new method was investigated using 17 different brands of medical elastic compression stocking. Results A significant correlation in stiffness values using the two methods was obtained ( P < 0.01). When this new method was applied to the bandages, the stiffness was significantly correlated with the initial pressure when assessing both short-stretch and long-stretch bandages. On the comparison of stiffness values between elastic stockings and bandages with the same initial pressure, the short-stretch bandages showed a predominantly higher value than long-stretch bandages and stockings ( P < 0.01). Conclusion The reliability of this new method, which can be easily applied to not only elastic stockings but also elastic bandages, was verified. In clinical practice, the compression pressure should be selected in consideration of the prospective stiffness.
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Hirai M, Iwata H, Niimi K, Miyazaki K, Koyama A, Komatsubara R. Improvement of a three-dimensional measurement system for the evaluation of foot edema. Skin Res Technol 2011; 18:120-4. [PMID: 21429012 DOI: 10.1111/j.1600-0846.2011.00527.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND/AIMS This study investigated the accuracy and usefulness of a newly improved three-dimensional measurement system for measuring the volume and circumference at the foot as well as at the calf and ankle. METHODS Regarding the newly improved device, halogen light was projected from four directions instead of the conventional two directions. The circumference and volume were measured in the morning and evening with and without elastic stockings in 23 healthy subjects. RESULTS The average circumference at the foot calculated using the 'average method', in which the circumference of the foot was measured in 10 places every 1 mm and the values were averaged, significantly increased in the evening compared with in the morning. When stockings were applied, the significant differences in the circumference or volume between the morning and evening disappeared at all sites of the leg. CONCLUSION The newly improved three-dimensional measurement system incorporating the halogen light from four directions, in which the foot circumference was calculated using an 'average method', was reliable and useful for evaluating edema at the foot as well as at the calf and ankle. The beneficial effect of elastic stockings on edema prevention was observed at all sites of the leg.
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Naito E, Yoshida Y, Makino K, Kounoshi Y, Kunihiro S, Takahashi R, Matsuzaki T, Miyazaki K, Ishikawa F. Beneficial effect of oral administration of Lactobacillus casei strain Shirota on insulin resistance in diet-induced obesity mice. J Appl Microbiol 2011; 110:650-7. [PMID: 21281408 DOI: 10.1111/j.1365-2672.2010.04922.x] [Citation(s) in RCA: 153] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIMS This study aimed at determining whether oral administration of a probiotic strain, Lactobacillus casei strain Shirota (LcS), can improve insulin resistance, which is the underlying cause of obesity-associated metabolic abnormalities, in diet-induced obesity (DIO) mice. METHODS AND RESULTS DIO mice were fed a high-fat diet without or with 0·05% LcS for 4 weeks and then subjected to an insulin tolerance test (ITT) or oral glucose tolerance test (OGTT). Oral administration of LcS not only accelerated the reduction in plasma glucose levels during the ITT, but also reduced the elevation of plasma glucose levels during the OGTT. In addition, plasma levels of lipopolysaccharide-binding protein (LBP), which is a marker of endotoxaemia, were augmented in the murine models of obese DIO, ob/ob, db/db and KK-A(y) and compared to those of lean mice. LcS treatment suppressed the elevation of plasma LBP levels in DIO mice, but did not affect intra-abdominal fat weight. CONCLUSIONS LcS improves insulin resistance and glucose intolerance in DIO mice. The reduction in endotoxaemia, but not intra-abdominal fat, may contribute to the beneficial effects of LcS. SIGNIFICANCE AND IMPACT OF THE STUDY This study suggests that LcS has the potential to prevent obesity-associated metabolic abnormalities by improving insulin resistance.
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Miyazaki K, Yamaguchi M, Suzuki R, Kobayashi Y, Maeshima AM, Niitsu N, Ennishi D, Tamaru JI, Ishizawa K, Kashimura M, Kagami Y, Sunami K, Yamane H, Nishikori M, Kosugi H, Yujiri T, Hyo R, Katayama N, Kinoshita T, Nakamura S. CD5-positive diffuse large B-cell lymphoma: a retrospective study in 337 patients treated by chemotherapy with or without rituximab. Ann Oncol 2011; 22:1601-1607. [PMID: 21199885 DOI: 10.1093/annonc/mdq627] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND CD5-positive (CD5+) diffuse large B-cell lymphoma (DLBCL) shows poor prognosis and frequent central nervous system (CNS) relapses under anthracycline-containing chemotherapy. The aim of this study was to determine the prognosis and CNS relapse incidence of CD5+ DLBCL in the rituximab era. PATIENTS AND METHODS We analyzed 337 patients with CD5+ DLBCL who received chemotherapy with (R-chemotherapy group; n = 184) or without (chemotherapy group; n = 153) rituximab. RESULTS No significant difference was found in clinical background comparisons between the two groups. In the R-chemotherapy group, 60% of the patients were older than 65 years at diagnosis. Both the complete response rate and overall survival (OS) were significantly better in the R-chemotherapy group (P = 0.0003 and P = 0.002, respectively). Multivariate analysis confirmed that chemotherapy without rituximab was associated with unfavorable OS. However, the probability of CNS relapse did not differ between the two groups (P = 0.89). The CNS relapse was strongly associated with short OS (P < 0.0001). In the R-chemotherapy group, 83% of patients who experienced CNS relapse had parenchymal disease. CONCLUSIONS Our results indicate that rituximab improves the OS of patients with CD5+ DLBCL but does not decrease the CNS relapse rate. More effective treatments with CNS prophylaxis are needed for CD5+ DLBCL patients.
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Nakayama K, Yeasmin S, Katagiri A, Rahman MT, Rahman M, Ishikawa M, Iida K, Nakayama N, Aoki S, Miyazaki K. A comparative study between microwave endometrial ablation and conventional surgical procedures for treatment of menorrhagia. CLIN EXP OBSTET GYN 2011; 38:33-37. [PMID: 21485722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To compare microwave endometrial ablation (MEA) using a new curved applicator with conventional surgical procedures in 26 patients with menorrhagia. STUDY DESIGN Ten patients received MEA and 16 patients received conventional surgical procedures. Using a visual analog scale (VAS). MEA patients rated their menorrhagia, dysmenorrhea, and feelings of satisfaction from the procedure. The patients' intraoperative blood loss, operating time, and length of hospital stay were compared. RESULTS Following MEA, the VAS scores were significantly decreased in the MEA patients for menorrhagia (p < 0.0001) and dysmenorrhea (p = 0.0002). The average VAS score regarding feelings of satisfaction for MEA was 8.9 (full score = 10). Mean blood loss, operating time, and mean length of hospital stay were significantly decreased in the MEA group compared to the conventional surgical procedure group (p < 0.0001). CONCLUSION MEA successfully controlled menorrhagia and achieved a high rate of satisfaction among patients.
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Palial KK, Drury J, Heathcote L, Valentijin A, Farquharson RG, Gazvani R, Rudland PS, Hapangama DK, Celik N, Celik O, Aktan E, Ozerol E, Celik E, Bozkurt K, Paran H, Hascalik S, Ozerol I, Arase T, Maruyama T, Uchida H, Miyazaki K, Oda H, Uchida-Nishikawa S, Kagami M, Yamazaki A, Tamaki K, Yoshimura Y, De Vos M, Ortega C, Smitz J, Van Vaerenbergh I, Bourgain C, Devroey P, Luciano D, Exacoustos C, Zupi E, Luciano AA, Arduini D, Palomino WA, Argandona F, Kohen P, Azua R, Scarella A, Devoto L, McKinnon B, Bersinger NA, Mueller MD, Bonavita M, Mattila M, Ferreira FP, Maia-Filho V, Rocha AM, Serafini P, Motta ELA, Kim H, Kim CH, You RM, Nah HY, Lee JW, Kang HJ, Kang BM, Letur - Koenirsch H, Haouzi D, Olivennes F, Rouleau C, Cohen-Bacri P, Dechaud H, Hamamah S, D'Hooghe T, Hummelshoj L, Dunselman GAJ, Dirksen CD, EndoCost Consortium WERF, Simoens S, Novembri R, Luisi S, Carrarelli P, Rocha ALL, Toti P, Reis FM, Florio P, Petraglia F, Bruce KD, Sadek KH, Macklon N, Cagampang FR, Cheong Y, Goudakou M, Kalogeraki A, Matalliotakis I, Papatheodorou A, Pasadaki T, Karkanaki A, Prapas I, Prapas I, Kalogeraki A, Matalliotakis I, Panagiotidis I, Kasapi E, Karkanaki A, Goudakou M, Barlow D, Oliver J, Loumaye E, Khanmohammadi M, kazemnejad S, darzi S, Khanjani S, Zarnani A, Akhondi M, Tan CW, Ng CP, Loh SF, Tan HH, Choolani M, Griffith L, Chan J, Andersson KL, Sundqvist J, Scarselli G, Gemzell-Danielsson K, Lalitkumar PG, Jana S, Chattopadhyay R, Datta Ray C, Chaudhury K, Chakravarty BN, Hannan N, Evans J, Hincks C, Rombauts LJF, Salamonsen LA, Choi D, Lee J, Park J, Chang H, Kim M, Hwang K, Takeuchi K, Kurematsu T, Fukumoto Y, Yuki Y, Kuroki Y, Homan Y, Sata Y, Takeuchi M, Munoz Munoz E, Ortiz Olivera G, Fernandez Lopez I, Martinez Martinez B, Aguilar Prieto J, Portela Perez S, Pellicer Martinez A, Keltz M, Sauerbrun M, Breborowicz A, Gonzales E, Vicente-Munoz S, Puchades-Carrasco L, Morcillo I, Hidalgo JJ, Gilabert-Estelles J, Novella-Maestre E, Pellicer A, Pineda-Lucena A, Yavorovskaya KA, Okhtyrskaya TA, Demura TA, Faizulina NM, Ezhova LS, Kogan EA, Bilibio JP, Souza CAB, Rodini GP, Genro V, Andreoli CG, de Conto E, Cunha-Filho JSL, Saare M, Soritsa D, Jarva L, Vaidla K, Palta P, Laan M, Karro H, Soritsa A, Salumets A, Peters M, Miskova A, Pilmane M, Rezeberga D, Haouzi D, Dechaud H, Assou S, Letur H, Olivennes F, Hamamah S, Piomboni P, Stendardi A, Gambera L, De Leo V, Petraglia F, Focarelli R, Tamm K, Simm J, Salumets A, Metsis M, Vodolazkaia A, Fassbender A, Kyama CM, Bokor A, Schols D, Huskens D, Meuleman C, Peeraer K, Tomassetti C, D'Hooghe TM, Machens K, Afhuppe W, Schulz A, Diefenbach K, Schutt B, Faustmann T, Reischl J, Peters M, Altmae S, Reimand J, Laisk T, Saare M, Hovatta O, Kolde R, Vilo J, Stavreus-Evers A, Salumets A, Lee JH, Kim SG, Kim YY, Park IH, Sun HG, Lee KH, Ezoe K, Kawano H, Yabuuchi A, Ochiai K, Nagashima H, Osada H, Kagawa N, Kato O, Tamura I, Asada H, Taketani T, Tamura H, Sugino N, Garcia Velasco J, Prieto L, Quesada JF, Cambero O, Toribio M, Pellicer A, Hur CY, Lim KS, Lee WD, Lim JH, Germeyer A, Nelson L, Graham A, Jauckus J, Strowitzki T, Lessey B, Gyulmamedova I, Illina O, Illin I, Mogilevkina I, Chaika A, Nosenko O, Boykova I, Gulmamedova E, Isik H, Moraloglu O, Seven ALI, Kilic S, Erkayiran U, Caydere M, Batioglu S, Alhalabi M, Samawi S, Taha A, Kafri N, Modi S, Khatib A, Sharif J, Othman A, Lancuba S, Branzini C, Lopez M, Baricalla A, Cristina C, Chen J, Jiang Y, Zhen X, Hu Y, Yan G, Sun H, Mizumoto J, Ueno J, Carvalho FM, Casals G, Ordi J, Guimera M, Creus M, Fabregues F, Casamitjana R, Carmona F, Balasch J, Choi YS, Kim KC, Lee WD, Kim KH, Lee BS, Kim SH, Fassbender A, Overbergh L, Verdrengh E, Kyama C, Vodolazkaia A, Bokor A, Meuleman C, Peeraer K, Tomassetti C, Waelkens E, Mathieu C, D'Hooghe T, Iwasa T, Hatano K, Hasegawa E, Ito H, Isaka K, L. Rocha AL, Luisi S, Carrarelli P, Novembri R, Florio P, Reis F, Petraglia F, Lee KS, Joo JK, Son JB, Choi JR, Vidali A, Barad DH, Gleicher N, Jiang Y, Chen J, Zhen X, Hu Y, Sun H, Yan G, Sayyah-Melli M, Kazemi-Shishvan M. POSTER VIEWING SESSION - ENDOMETRIOSIS, ENDOMETRIUM, IMPLANTATION AND FALLOPIAN TUBE. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.80] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Duarte MC, Babeto E, Leite KRM, Miyazaki K, Borim AA, Rahal P, Silva AE. Expression of TERT in precancerous gastric lesions compared to gastric cancer. Braz J Med Biol Res 2010; 44:100-4. [PMID: 21180888 DOI: 10.1590/s0100-879x2010007500143] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Accepted: 11/18/2010] [Indexed: 12/14/2022] Open
Abstract
The objective of this study was to determine the levels of TERT mRNA and TERT protein expression in stomach precancerous lesions such as intestinal metaplasia (IM) and gastric ulcer (GU) and compare them to gastric cancer (GC). Real-time PCR was performed to detect TERT mRNA expression levels in 35 biopsies of IM, 30 of GU, and 22 of GC and their respective normal mucosas. TERT protein was detected by immunohistochemistry in 68 samples, 34 of IM, 23 of GU, and 11 of GC. Increased TERT mRNA expression levels were observed in a significant number of cases, i.e., 46% of IM, 50% of GU, and 79% of GC. The relative mean level of TERT mRNA after normalization with the β-actin reference gene and comparison with the respective adjacent normal mucosa was slightly increased in the IM and GU groups, 2.008 ± 2.605 and 2.730 ± 4.120, respectively, but high TERT mRNA expression was observed in the GC group (17.271 ± 33.852). However, there were no statistically significant differences between the three groups. TERT protein-positive immunostaining was observed in 38% of IM, 39% of GU, and 55% of GC. No association of TERT mRNA and protein expression with Helicobacter pylori infection or other clinicopathological variables was demonstrable, except for the incomplete type vs the complete type of IM. This study confirms previous data of the high expression of both TERT mRNA and protein in gastric cancer and also demonstrates this type of changed expression in IM and GU, thus suggesting that TERT expression may be deregulated in precursor lesions that participate in the early stages of gastric carcinogenesis.
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Yamashita T, Takehara S, Miyazaki K, Kitahama Y, Namba H. Enhanced MR angiography for depiction of spinal dural arteriovenous fistula in the craniocervical junction. J Neuroradiol 2010; 38:196-8. [PMID: 20961618 DOI: 10.1016/j.neurad.2010.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 07/08/2010] [Accepted: 08/02/2010] [Indexed: 10/18/2022]
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Maruyama T, Miyazaki K, Oda H, Nishikawa-Uchida S, Uchida H, Yoshimura Y. Significance of close and continuous monitoring of follicle development in the management of pregnancy-seeking patients with premature ovarian failure. Fertil Steril 2010. [DOI: 10.1016/j.fertnstert.2010.07.726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Obi T, Matsumoto M, Miyazaki K, Kitsutaka K, Tamaki M, Takase K, Miyamoto A, Oka T, Kawamoto Y, Nakada T. Skeletal Ryanodine Receptor 1-Heterozygous PSE (Pale, Soft and Exudative) Meat Contains a Higher Concentration of Myoglobin than Genetically Normal PSE Meat in Pigs. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2010. [DOI: 10.5713/ajas.2010.90542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hazan L, Hernández Rodriguez OA, Bhorat AE, Miyazaki K, Tao B, Heyrman R. Response to Pharmacological Therapy for Hypertensive Children: An “Additional Bypass” of Lifestyle Interventions. Hypertension 2010. [DOI: 10.1161/hypertensionaha.110.155176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tamura N, Ohno K, Miyazaki K, Sato K, Tamura N, Kanayama N. Expression of stress fiber-associated protein CLP36 during differentiation of Rcho-1 trophoblast giant cells. Placenta 2010; 31:743-5. [PMID: 20599268 DOI: 10.1016/j.placenta.2010.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Accepted: 06/07/2010] [Indexed: 11/30/2022]
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Shikata S, Sato T, Miyazaki K, Okumura A, Takagaki N, Nakayama T, Minato H, Matsuda T. Description of palliative medicine in guidelines for digestive system cancer medical care. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e19628] [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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Katsuno H, Shirakawa R, Miyazaki K, Ozeki Y, Yasumitsu H. Production of Active MMP7 in E. coli and Its Application for Metalloproteinase Inhibitors Screening. Protein Pept Lett 2010; 17:568-72. [DOI: 10.2174/092986610791112648] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Accepted: 01/07/2010] [Indexed: 11/22/2022]
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Hazan L, Hernández Rodriguez OA, Bhorat AE, Miyazaki K, Tao B, Heyrman R. A double-blind, dose-response study of the efficacy and safety of olmesartan medoxomil in children and adolescents with hypertension. Hypertension 2010; 55:1323-30. [PMID: 20385971 DOI: 10.1161/hypertensionaha.109.147702] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The current study investigated the efficacy and safety of olmesartan medoxomil in children with hypertension, defined as systolic blood pressure measured at or above the 95th percentile (90th percentile for patients with diabetes, glomerular kidney disease, or family history of hypertension) for age, gender, and height while off any antihypertensive medication. The active treatment phase was conducted in 2 periods, with 2 cohorts in each period (cohort A, 62% white; cohort B, 100% Black). In period 1, patients stratified by weight received low-dose (2.5 or 5 mg) or high-dose (20 or 40 mg) olmesartan medoxomil daily for 3 weeks. In period 2, patients maintained their olmesartan medoxomil dose or initiated placebo washout for an additional 2 weeks. Period 1 efficacy results showed a dose-dependent, statistically significant reduction in seated trough systolic and diastolic blood pressure for both cohorts, with mean blood pressure reductions numerically smaller in cohort B than in cohort A. The olmesartan medoxomil dose response remained statistically significant when adjusted for body weight. In period 2, blood pressure control decreased in those patients switching to placebo, whereas patients continuing to receive olmesartan medoxomil therapy maintained consistent blood pressure reduction. Adverse events were generally mild and unrelated to study medication. Olmesartan medoxomil was safe and efficacious in children with hypertension, resulting in significant blood pressure reductions.
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Kawamichi Y, Makino Y, Matsuda Y, Miyazaki K, Uchiyama S, Ohta H. Riluzole Use during Pregnancy in a Patient with Amyotrophic Lateral Sclerosis: A Case Report. J Int Med Res 2010; 38:720-6. [DOI: 10.1177/147323001003800237] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pregnancy with amyotrophic lateral sclerosis (ALS) is rare and generally considered dangerous. Riluzole is the only drug approved for use in ALS, but the effect on maternal and fetal health is unknown. We describe the case of an ALS patient taking riluzole throughout pregnancy. A 34-year old Japanese woman, who had been diagnosed with probable ALS 4 years earlier, visited our hospital for abdominal distension, without knowing that she was pregnant. The patient had been taking riluzole for 2 years, inclusive of her gestational months, and we decided to continue administration of the medication. The patient delivered a normal female infant transvaginally at 38 weeks gestation. The patient's neurological status was stable 1 year after delivery and the baby had developed normally. We found that, in this case, riluzole did not cause any side-effects to the pregnant woman or her fetus.
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Charbonneau P, Ikeda A, van Meel JA, Miyazaki K. Numerical and theoretical study of a monodisperse hard-sphere glass former. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2010; 81:040501. [PMID: 20481668 DOI: 10.1103/physreve.81.040501] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2009] [Revised: 11/13/2009] [Indexed: 05/29/2023]
Abstract
There exists a variety of theories of the glass transition and many more numerical models. But because the models need built-in complexity to prevent crystallization, comparisons with theory can be difficult. We study the dynamics of a deeply supersaturated monodisperse four-dimensional (4D) hard-sphere fluid, which has no such complexity, but whose strong intrinsic geometrical frustration inhibits crystallization, even when deeply supersaturated. As an application, we compare its behavior to the mode-coupling theory (MCT) of glass formation. We find MCT to describe this system better than any other structural glass formers in lower dimensions. The reduction in dynamical heterogeneity in 4D suggested by a milder violation of the Stokes-Einstein relation could explain the agreement. These results are consistent with a mean-field scenario of the glass transition.
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Kato T, Miyazaki K, Nakamura T, Tan KY, Chiba T, Konishi F. Perforated phlebosclerotic colitis--description of a case and review of this condition. Colorectal Dis 2010; 12:149-51. [PMID: 19175648 DOI: 10.1111/j.1463-1318.2008.01726.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Yeasmin S, Nakayama K, Katagiri A, Ishikawa M, Iida K, Nakayama N, Miyazaki K. Exaggerated placental site mimicking placental site trophoblastic tumor: case report and literature review. EUR J GYNAECOL ONCOL 2010; 31:586-589. [PMID: 21061810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Exaggerated placental site is defined as a non-neoplastic trophoblastic lesion featuring exuberant infiltration into the endometrium and myometrium by intermediate trophoblasts and syncytiotrophoblasts. Exaggerated placental site can occur following normal or ectopic pregnancy, abortion, or hydatidiform mole. We encountered a case of reactive exaggerated placental site seven months following normal pregnancy that clinically mimicked placental site trophoblastic tumor. Few reports have described the clinical course, histopathology and differential diagnosis of exaggerated placental site; we present our patient's case together with histopathological observations and review of related literature.
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Suzuki T, Miyazaki K, Kita K, Ochi T. Trivalent dimethylarsenic compound induces histone H3 phosphorylation and abnormal localization of Aurora B kinase in HepG2 cells. Toxicol Appl Pharmacol 2009; 241:275-82. [DOI: 10.1016/j.taap.2009.08.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 08/11/2009] [Accepted: 08/17/2009] [Indexed: 11/16/2022]
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Kondo Y, Miyazaki K, Takayanagi K, Sakurai K. Mechanical properties of fiber-reinforced natural rubbers using surface-modified PET fibers under EB irradiation. J Appl Polym Sci 2009. [DOI: 10.1002/app.30864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Morimoto N, Nagai M, Miyazaki K, Ohta Y, Takehisa Y, Ikeda Y, Matsuura T, Abe K. PO09-MO-13 Progressive decrease in the level of YAPdeltaCs, prosurvival isoforms of YAP, in the spinal cord of ALS model mice. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)70748-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Miyazaki K, Yamaguchi M, Suzuki R, Niitsu N, Ennishi D, Tamaru J, Kagami Y, Katayama N, Kinoshita T, Nakamura S. Retrospective analysis of CD5-positive diffuse large B-cell lymphoma (CD5+ DLBCL) treated with chemotherapy with or without rituximab. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.8551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
8551 Background: CD5+ DLBCL comprises 5–10% of DLBCL, and shows a high incidence of central nervous system (CNS) relapse. It has been included in the 4th WHO classification as an immunohistochemical subgroup. To clarify the prognosis and incidence of CNS relapse of CD5+ DLBCL in the rituximab-era, we conducted a multicenter retrospective study. Methods: We analyzed 313 patients (pts) with CD5+ DLBCL who received chemotherapy with (n=164) or without rituximab (n=149). The current series includes 107 out of 120 pts described in our previous study (Haematologica, 2008). Intravascular large B-cell lymphoma, primary CNS DLBCL, and secondary CD5+ DLBCL were excluded from the study population. Results: 313 pts showed the following clinical features: median age, 67 (range: 15–93); M:F=163:150; elevated serum LDH level, 71%; stage III/IV, 64%; IPI HI/H, 53%. No significant difference in clinical background such as the IPI and its five components, B symptom, male sex, and bone marrow involvement was found between pts who were treated with and without rituximab. Pts treated without rituximab received more dose-intensive chemotherapies (CHOP14, third-generation regimen, and high dose cytarabine-based regimen) than those treated with rituximab (24% vs. 7%, P<0.0001). The CR rate was higher in pts received rituximab than those without (81% vs. 65%; P=0.0014). The median follow-up was 28 months in pts who received rituximab (range: 7–77) and 68 months in those who did not (range: 6–187). Overall survival (OS) was significantly superior for pts with rituximab than for those without (2-yr OS: 68% vs. 54%, P=0.003). Multivariate analysis revealed that the use of rituximab was favorably associated with OS (HR=1.81, 95% CI: 1.26–2.58, P=0.001), but dose-intensive chemotherapies did not affect OS. However, the incidence of CNS relapse was not different between the two groups (2-yr CNS relapse rate: 11.9% vs. 11.4%, P=0.91). 16 of the 20 pts (80%) with CNS relapse in the rituximab group had brain parenchymal disease. Conclusions: Our data show that rituximab improves OS of pts with CD5+ DLBCL, but does not prevent CNS relapse. Future prospective studies to decrease CNS disease for CD5+ DLBCL are warranted. No significant financial relationships to disclose.
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Nakayama K, Nakayama N, Ishibashi M, Yeasmin S, Fukumoto M, Miyazaki K. Fractional allelic loss as a potential biomarker of risk prediction in early-stage mucinous ovarian tumors of low malignant potential. EUR J GYNAECOL ONCOL 2009; 30:16-19. [PMID: 19317250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Ovarian tumors of low malignant potential (LMP) appear to be intermediate between adenomas and ovarian carcinomas. Such tumors are often associated with a significantly better prognosis than for ovarian carcinomas. However, a subset of LMPs can progress and become lethal even in patients with early-stage disease. In order to seek sensitive diagnostic tools to monitor patients after surgical therapy, we performed a genome-wide scan for LOH in 37 early-stage mucinous LMPs using 91 polymorphic microsatellite markers at an average interval of 50 cM across all of the human chromosomes and 25 LOH markers reported to be associated with ovarian carcinoma. Fractional allelic loss (FAL) values were calculated as (loci scored with LOH)/(total informative loci) for each sample. With respect to tumor recurrence, high FAL values were more frequent in recurrent tumors than in non-recurrent tumors. Using the screening markers, FAL values for recurrent tumors were significantly higher than for non-recurrent tumors (19.8% vs 6.3%, respectively, p < 0.0001). Similar results were obtained using the hotspot markers (22.2% vs 7.1%, respectively, p < 0.0001). A significant correlation between FAL values obtained using screening markers and those based on hotspot markers was observed (R = 0.460, p = 0.003). Our findings suggest that a specific type of genetic instability (i.e., chromosomal instability, CIN) may exist in mucinous LMPs, and that this instability may indicate tumors with an aggressive biological nature. Therefore, FAL values may represent a new biomarker for risk prediction in early-stage mucinous LMP tumors.
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Wakisaka Y, Taenaka Y, Nakatani T, Anai H, Araki K, Nishimura T, Tatsumi E, Masuzawa T, Baba Y, Toda K, Eya K, Miyazaki K, Takewa Y, Takano H. Tandem Operation of a Turbo Blood Pump (BP-80-Type Centrifugal Pump) to Reduce Hemolysis. Artif Organs 2008; 20:572-574. [DOI: 10.1111/j.1525-1594.1996.tb04483.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nishibe T, Kudo F, Miyazaki K, Kondo Y, Nishibe M, Muto A, Dardik A. Relationship between parameters of air plethysmography and types of superficial venous reflux in patients with primary varicose veins. INT ANGIOL 2008; 27:385-388. [PMID: 18974700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM We investigated whether parameters of air plethysmography (APG) were correlated with types of superficial venous reflux as categorized by ascending venography in patients with primary varicose veins. METHODS Two hundred and eight limbs with primary varicose veins in 135 patients were evaluated by both APG and ascending venography. Venous hemodynamics was assessed with APG. The location of incompetent vein segments was determined based on the results of ascending venography. RESULTS Seventy-seven limbs had incompetence of the greater saphenous vein (GSV, G group), 36 had incompetence of the lesser saphenous vein (LSV, L group), and 77 had incompetence of the GSV and LSV (GL group). Twenty-five limbs did not have incompetence of the GSV or LSV (N group). The venous filling index (VFI) differed significantly between the N and the G and GL groups, the L group and the G and GL groups, and the G and GL groups. No significant difference was found between the N and L groups. The venous volume, ejection fraction, and residual volume fraction did not differ significantly among all four groups. CONCLUSION The VFI as measured by APG discriminates well between limbs with incompetence of the GSV and those without incompetence of the GSV or LSV, and between limbs with incompetence of the GSV and those with the LSV in patients with primary varicose veins, suggesting that the hemodynamic severity of superficial venous reflux progresses with involvement from the LSV to the GSV to both saphenous veins.
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Masaki Y, Dong L, Kurose N, Kitagawa K, Morikawa Y, Yamamoto M, Takahashi H, Shinomura Y, Imai K, Saeki T, Azumi A, Nakada S, Sugiyama E, Matsui S, Origuchi T, Nishiyama S, Nishimori I, Nojima T, Yamada K, Kawano M, Zen Y, Kaneko M, Miyazaki K, Tsubota K, Eguchi K, Tomoda K, Sawaki T, Kawanami T, Tanaka M, Fukushima T, Sugai S, Umehara H. Proposal for a new clinical entity, IgG4-positive multiorgan lymphoproliferative syndrome: analysis of 64 cases of IgG4-related disorders. Ann Rheum Dis 2008; 68:1310-5. [PMID: 18701557 DOI: 10.1136/ard.2008.089169] [Citation(s) in RCA: 397] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Mikulicz's disease (MD) has been considered as one manifestation of Sjögren's syndrome (SS). Recently, it has also been considered as an IgG(4)-related disorder. OBJECTIVE To determine the differences between IgG(4)-related disorders including MD and SS. METHODS A study was undertaken to investigate patients with MD and IgG(4)-related disorders registered in Japan and to set up provisional criteria for the new clinical entity IgG(4)-positive multiorgan lymphoproliferative syndrome (IgG(4)+MOLPS). The preliminary diagnostic criteria include raised serum levels of IgG(4) (>135 mg/dl) and infiltration of IgG(4)(+) plasma cells in the tissue (IgG(4)+/IgG+ plasma cells >50%) with fibrosis or sclerosis. The clinical features, laboratory data and pathologies of 64 patients with IgG(4)+MOLPS and 31 patients with typical SS were compared. RESULTS The incidence of xerostomia, xerophthalmia and arthralgia, rheumatoid factor and antinuclear, antiSS-A/Ro and antiSS-B/La antibodies was significantly lower in patients with IgG(4)+MOLPS than in those with typical SS. Allergic rhinitis and autoimmune pancreatitis were significantly more frequent and total IgG, IgG(2), IgG(4) and IgE levels were significantly increased in IgG(4)+MOLPS. Histological specimens from patients with IgG(4)+MOLPS revealed marked IgG(4)+ plasma cell infiltration. Many patients with IgG(4)+MOLPS had lymphocytic follicle formation, but lymphoepithelial lesions were rare. Few IgG(4)+ cells were seen in the tissue of patients with typical SS. Thirty-eight patients with IgG(4)+MOLPS treated with glucocorticoids showed marked clinical improvement. CONCLUSION Despite similarities in the involved organs, there are considerable clinical and pathological differences between IgG(4)+MOLPS and SS. Based on the clinical features and good response to glucocorticoids, we propose a new clinical entity: IgG(4)+MOLPS.
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Kondo Y, Miyazaki K, Takayanagi K, Sakurai K. Surface treatment of PET fiber by EB-irradiation-induced graft polymerization and its effect on adhesion in natural rubber matrix. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.02.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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136
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Yeasmin S, Nakayama K, Ishibashi M, Oride A, Katagiri A, Purwana IN, Iida K, Nakayama N, Ishikura H, Miyazaki K. Therapy-related myelodysplasia and acute myeloid leukemia following paclitaxel- and carboplatin-based chemotherapy in an ovarian cancer patient: a case report and literature review. Int J Gynecol Cancer 2008; 18:1371-6. [PMID: 18217963 DOI: 10.1111/j.1525-1438.2007.01185.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Alkylating agents have strong leukemogenic potential. There are a number of recent acute myeloid leukemia (t-AML) cases related to previous paclitaxel exposure. These leukemias tend to be of aggressive subtypes with long-latency periods. Unlike previously reported cases, the present case was of the secondary acute megakaryoblastic myeloid leukemia (AML M7) subtype. Additionally, it did not harbor a translocation in chromosome 19. A 73-year-old woman was diagnosed with t-AML M7 with antecedent myelodysplasia. Leukemia followed a second induction of paclitaxel- and carboplatin-based chemotherapy for recurrent ovarian cancer. Her second induction began 25 months after completion of her first course of chemotherapy. The increased incidence of postpaclitaxel leukemia suggests a probable role for paclitaxel as a leukemogenic agent. It highlights the importance of assessing for leukemia risk factors prior to beginning paclitaxel therapy.
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Mizuno T, Yamasaki N, Miyazaki K, Tazaki T, Koller R, Oda H, Honda ZI, Ochi M, Wolff L, Honda H. Overexpression/enhanced kinase activity of BCR/ABL and altered expression of Notch1 induced acute leukemia in p210BCR/ABL transgenic mice. Oncogene 2008; 27:3465-74. [PMID: 18193087 DOI: 10.1038/sj.onc.1211007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chronic myelogenous leukemia (CML) is a hematopoietic disorder, which begins as indolent chronic phase but inevitably progresses to fatal blast crisis. p210BCR/ABL, a constitutively active tyrosine kinase, is responsible for disease initiation but molecular mechanism(s) underlying disease evolution remains largely unknown. To explore this process, we employed retroviral insertional mutagenesis to CML-exhibiting p210BCR/ABL transgenic mice (Tg). Virus infection induced acute lymphoblastic leukemia (ALL) in p210BCR/ABL Tg with a higher frequency and in a shorter latency than wild-type littermates, and inverse PCR detected two retrovirus common integration sites (CISs) in p210BCR/ABL Tg tumors. Interestingly, one CIS was the transgene itself, where retrovirus integrations induced upregulation of p210BCR/ABL and production of truncated BCR/ABL with an enhanced kinase activity. Another CIS was Notch1 gene, where retrovirus integrations resulted in overexpression of Notch1 and generation of Notch1 lacking the C-terminal region (Notch1DeltaC) associated with stable expression of its activated product, C-terminal-truncated Notch intracellular domain (NICD Delta C). In addition, generation of Tg for both p210BCR/ABL and Notch1DeltaC developed ALL in a shortened period with Stat5 activation, demonstrating the cooperative oncogenicity of Notch1DeltaC/NICD Delta C with p210BCR/ABL involving Stat5-mediated pathway. These results demonstrated that overexpression/enhanced kinase activity of BCR/ABL and altered expression of Notch1 induces acute leukemia in a transgenic model for CML.
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Yeasmin S, Nakayama K, Oride A, Ishibashi M, Ishikawa N, Katagiri A, Iida K, Nakayama N, Miyazaki K. A case of extremely chemoresistant pure pleomorphic rhabdomyosarcoma of the uterus associated with a high serum LDH level. EUR J GYNAECOL ONCOL 2008; 29:518-522. [PMID: 19051826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND Pleomorphic rhabdomyosarcoma (RMS) of gynecologic origin is an exceedingly rare, highly malignant tumor. Only a few cases have been reported in the last decades. CASE REPORT A 60-year-old postmenopausal woman presented with a high LDH level of unknown origin. Ultimately, she was diagnosed with pleomorphic RMS. She underwent total hysterectomy, bilateral salpingo-oophorectomy, left pelvic and paraaortic lymphadenectomy and partial omentectomy. Surgery was followed by systemic chemotherapy and pelvic irradiation. Unfortunately, the patient did not respond to treatment. Her disease course correlated with the fluctuation of plasma LDH levels. Ultimately she died within 20 months of the diagnosis. CONCLUSION It is important to have better insight and to set a standard multimodal treatment for adult RMS. In addition, plasma LDH levels can be considered as a prognostic marker for RMS, particularly in advanced stage.
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Kudo FA, Nishibe T, Miyazaki K, Kondo Y, Nishibe M. Aneurysm of the lateral circumflex femoral artery in association with a femoral artery aneurysm: report of a case. THE JOURNAL OF CARDIOVASCULAR SURGERY 2007; 48:671-672. [PMID: 17989639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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140
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Wakitani S, Nawata M, Kawaguchi A, Okabe T, Takaoka K, Tsuchiya T, Nakaoka R, Masuda H, Miyazaki K. Serum keratan sulfate is a promising marker of early articular cartilage breakdown. Rheumatology (Oxford) 2007; 46:1652-6. [PMID: 17855425 DOI: 10.1093/rheumatology/kem220] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES To find serum markers that may serve as indices for an early diagnosis of degeneration or damage of the articular cartilage. METHODS Twenty-four healthy volunteers, 19 individuals with knee trauma (KT) and 31 with knee osteoarthritis (OA) were evaluated. KT patients were divided into a group (n = 5) with an injury <2 months old (recent KT) and a group (n = 14) with that >2 months old (old KT). Articular cartilage damage was assessed using either arthroscopy or direct observation. Serum concentrations of hyaluronic acid (HA), cartilage proteoglycan aggrecan turnover epitope (CS846) and cartilage oligomeric protein (COMP) were measured using enzyme-linked immunosorbent assay kits and those of keratan sulfate (KS) and chondroitin-6-sulfate (C6S) using high-performance liquid chromatography. RESULTS Serum KS in the recent KT group (2095 +/- 594 ng/ml) was significantly higher than that in the old KT group (1373 +/- 418 ng/ml; P = 0.021), and serum COMP in the recent KT group (1572 +/- 182 ng/ml) showed a tendency that was higher than that in the old KT group (1350 +/- 250 ng/ml; P = 0.079). Serum KS in OA patients with Kellgren and Lawrence (KL) grades 0 and I (1456 +/- 334 ng/ml) showed a tendency that was higher than that in OA patients with KL grades II, III and IV (1248 +/- 220 ng/ml; P = 0.084). CONCLUSIONS The serum concentration of KS correlated with the damage of the articular cartilage and it was significantly increased even at an early stage after the injury.
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Berthier L, Biroli G, Bouchaud JP, Kob W, Miyazaki K, Reichman DR. Spontaneous and induced dynamic fluctuations in glass formers. I. General results and dependence on ensemble and dynamics. J Chem Phys 2007; 126:184503. [PMID: 17508807 DOI: 10.1063/1.2721554] [Citation(s) in RCA: 214] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We study theoretically and numerically a family of multipoint dynamic susceptibilities that quantify the strength and characteristic length scales of dynamic heterogeneities in glass-forming materials. We use general theoretical arguments (fluctuation-dissipation relations and symmetries of relevant dynamical field theories) to relate the sensitivity of averaged two-time correlators to temperature and density to spontaneous fluctuations of the local dynamics. Our theoretical results are then compared to molecular dynamics simulations of the Newtonian, Brownian, and Monte Carlo dynamics of two representative glass-forming liquids, a fragile binary Lennard-Jones mixture, and a model for the strong glass-former silica. We justify in detail the claim made by Berthier et al. [Science 310, 1797 (2005)] that the temperature dependence of correlation functions allows one to extract useful information on dynamic length scales in glassy systems. We also discuss some subtle issues associated with the choice of microscopic dynamics and of statistical ensemble through conserved quantities, which are found to play an important role in determining dynamic correlations.
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Berthier L, Biroli G, Bouchaud JP, Kob W, Miyazaki K, Reichman DR. Spontaneous and induced dynamic correlations in glass formers. II. Model calculations and comparison to numerical simulations. J Chem Phys 2007; 126:184504. [PMID: 17508808 DOI: 10.1063/1.2721555] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study in detail the predictions of various theoretical approaches, in particular, mode-coupling theory (MCT) and kinetically constrained models (KCMs), concerning the time, temperature, and wave vector dependence of multipoint correlation functions that quantify the strength of both induced and spontaneous dynamical fluctuations. We also discuss the precise predictions of MCT concerning the statistical ensemble and microscopic dynamics dependence of these multipoint correlation functions. These predictions are compared to simulations of model fragile and strong glass-forming liquids. Overall, MCT fares quite well in the fragile case, in particular, explaining the observed crucial role of the statistical ensemble and microscopic dynamics, while MCT predictions do not seem to hold in the strong case. KCMs provide a simplified framework for understanding how these multipoint correlation functions may encode dynamic correlations in glassy materials. However, our analysis highlights important unresolved questions concerning the application of KCMs to supercooled liquids.
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Miyazaki K, Martin JC, Marinsek-Logar R, Flint HJ. Degradation and utilization of xylans by the rumen anaerobe Prevotella bryantii (formerly P. ruminicola subsp. brevis) B(1)4. Anaerobe 2007; 3:373-81. [PMID: 16887612 DOI: 10.1006/anae.1997.0125] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/1997] [Accepted: 08/18/1997] [Indexed: 11/22/2022]
Abstract
Freshly harvested whole cells from cultures of P. bryantii B(1)4 grown with oat spelt xylan (OSX) as an energy source showed less than 25% of the enzyme activity against OSX, and less than 15% of the activity against birchwood xylan (BWX) and carboxymethylcellulose, that was detectable in sonicated cell preparations. This indicates that much of this hydrolytic activity is either periplasmic, membrane-associated or intracellular and may be concerned with the processing of transported oligosaccharides.P. bryantii B(1)4 cultures were able to utilise up to 45% and 51% of the total pentose present in OSX and BWX, respectively, after 24 h, but could utilize 84% of a water-soluble fraction of BWX. Analysis of the xylan left undegraded after incubation with P. bryantii showed that while xylose and arabinose were removed to a similar extent, uronic acids were utilized to a greater extent than xylose. Predigestion of xylans with two cloned xylanases from the cellulolytic rumen anaerobe Ruminococcus flavefaciens gave little increase in overall pentose utilization suggesting that external P. bryantii xylanases are as effective as the cloned R. flavefaciens enzymes in releasing products that can be utilised by P. bryantii cells. The xylanase system of P. bryantiiis able to efficiently utilise not only xylo-oligosaccharides but also larger water-soluble xylan fragments.
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Suzuki Y, Danbara M, Hayama M, Togano T, Ohsaka M, Miyazaki K, Horie R, Higashihara M. Phase II: Combination of cladribine, cyclophosphamide, mitoxantrone, rituximab (R-CCM) in patients with relapsed and refractory follicular and mantle cell lymphoma, results of a prospective study at Kitasato University. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.18542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
18542 Background: Indolent non-Hodgkin’s lymphoma (I-NHL) account for 20% of all of NHL in Japan, and they are increasing in number. More than 80% of the patients who achieve a complete remission with the initial treatment, will require salvage therapy. Recently, cladribine (2-CdA), a purine analogue is receiving much attention, because, even as a single agent, it has shown a high efficacy for I-NHL. The aim of our study was to determine the effectiveness and toxicity of combined chemotherapy consisting of 2-CdA, cyclophosphamide (CYP), mitoxantrone (MIT), rituximab (R-CCM) in the treatment of refractory or relapsed I-NHL. Methods: Patient eligibility criteria were: Previously treated patients with I-NHL, refractory or relapsed disease, no chemotherapy or irradiation within 4 weeks prior to the study, life expectancy of at least 3 months, age: 20–75, perfomance status of 0–3, adequate function ( bone marrow, liver, kidney, lung, heart) and written informed consent. The treatment regimen was: 2-CdA given at a dose of 0.09 mg/kg/day in a 2-h intravenous infusion from day 2–4, CYP 200 mg/m2/day from day 2–4, MIT 8 mg/m2/day on day 2 and rituximab 375 mg/m2/day on day .Primary end point was overall response rate. Results: 9 patients were enrolled, 7 (2 with mantle cell lymphoma, MCL; and 5 with follicular lymphoma, FL) were eligible. Mean Age was 63(51–72). The mean observation time was 121 days(47–314). Overall response rate (complete and partial) just after this therapy was 85.7%, one was progressive disease. One of PR one relapsed and died ten months after this regimen. The major toxicity was myelosuppression. Grade-III and -IV neutropenia was seen in 7 patients, grade-III thrombocytopenia in one and grade-III hemorrhagic cystitis in one, but all of them recovered from these toxicity. After the treatment, Grade-IV pneumonia and grade-III left-ventricular diastolic dysfunction was seen in the PD patient and passed away. Conclusions: the R-CCM is effective and safe in a combined regimen for relapsed and refractory I-NHL patients. We have just begun this new regimen, therefore, further investigations with larger population are warranted. No significant financial relationships to disclose.
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Faisal FHM, Abdurrouf A, Miyazaki K, Miyaji G. Origin of anomalous spectra of dynamic alignments observed in N2 and O2. PHYSICAL REVIEW LETTERS 2007; 98:143001. [PMID: 17501269 DOI: 10.1103/physrevlett.98.143001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Indexed: 05/15/2023]
Abstract
Recent pump-probe experiments with intense femtosecond laser pulses and diatomic molecules N2 and O2, have revealed the presence of Raman-forbidden anomalous series and lines in the Fourier spectrum of HHG (high harmonic generation) signals. A theoretical analysis of the problem is made by deriving a general expression of the angle dependent HHG operator that governs the dynamic alignment signals in linear molecules, and applying them to the experiments in N2 and O2. A unified interpretation of the origin of the observed Raman-allowed and the anomalous spectral features is given. The results are also used to estimate the molecular temperature in the experiments.
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Miyoshi A, Kitajima Y, Ide T, Ohtaka K, Nagasawa H, Uto Y, Hori H, Miyazaki K. Hypoxia accelerates cancer invasion of hepatoma cells by upregulating MMP expression in an HIF-1alpha-independent manner. Int J Oncol 2007; 29:1533-9. [PMID: 17088993 DOI: 10.3892/ijo.29.6.1533] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Tumor hypoxia has been reported to induce tumor progression in several carcinomas. Current studies have shown that hypoxia inducible factor-1alpha (HIF-1alpha) is stabilized under hypoxic conditions and transactivates various genes related to cancer aggressiveness. In the present study, we examined whether hypoxia affects cancer invasion in hepatocellular carcinoma. We aimed to solve the molecular mechanism of tumor invasion under the hypoxic condition. We showed that tumor hypoxia accelerated cancer invasion in two hepatoma cell lines. Using Western blot and RT-PCR analyses we demonstrated striking evidence that the expression of HIF-1alpha, ETS-1, MMP-7 and MT1-MMP was strongly upregulated by hypoxic stimulation. To examine whether these invasion-related genes are regulated by HIF-1alpha, we treated hepatoma cells with TX-402, which was reported to repress HIF-1alpha expression. HIF-1alpha expression was strongly repressed by the TX-402 treatment. In contrast, the expression of ETS-1, MMP-7 and MT1-MMP mRNA was not affected by TX-402 treatment. We further established stable transfectants in which HIF-1alpha dominant negative vector was introduced into Hep3B cells (pHIF-1alphaDN). In the pHIF-1alphaDN cells, the expression of ETS-1, MMP-7 and MT1-MMP was not repressed. Moreover, the invasion activity of pHIF-1alphaDN was not altered, compared with that of the mock. In hepatoma cells, we provided evidence that hypoxic stress accelerates cancer invasion by upregulating ETS-1 and the MMP family by an HIF-1alpha-independent pathway.
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Nishibe T, Kudo F, Miyazaki K, Kondo Y, Koizumi J, Dardik A, Nishibe M. Intermediate-term results of angioscopy-assisted anterior valve sinus plication for primary deep venous insufficiency. THE JOURNAL OF CARDIOVASCULAR SURGERY 2007; 48:21-5. [PMID: 17308518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
AIM The intermediate-term efficacy of angioscopy-assisted anterior valve sinus plication for primary deep venous insufficiency was evaluated. METHODS Twelve limbs in 11 patients had class 4 or higher disease on the SVS/ISCVS classification. Descending venography revealed grade-3 or 4-reflux in all limbs. The limbs were treated with angioscopy-assisted anterior valve sinus plication of the highest valve of the superficial femoral vein. Clinical evaluation and air plethysmography were performed at the final follow-up. RESULTS The mean follow-up was 38.4 months with a range of 24 to 48 months. Postoperative descending venography revealed significant improvement of the reflux of the superficial femoral vein. At the final follow-up, all patients reported relief of subjective symptoms. The ulcers healed and did not recur in the single limb with class-6 disease, the ulcers did not recur in four class-5 limbs, and there was a distinct clinical improvement with resolution of skin changes in the seven class-4 limbs. The venous filling index measured by air plethysmography was in a normal range in 8 of the 12 limbs. CONCLUSIONS Angioscopy-assisted anterior valve sinus plication may be a surgical technique that results in intermediate-term clinical and hemodynamic improvement in patients with primary deep venous insufficiency.
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Kato S, Mukojima K, Otani T, Sakai K, Tamura K, Miyazaki K, Minami N, Imai H. 13 MANAGEMENT SYSTEM FOR FROZEN BULL SEMEN USING A RADIO FREQUENCY IDENTIFICATION TAG. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
An appropriate traceability system is essential for safety during production and distribution of food products. In Japan, the ear-tag system has been applied for this purpose. In this system, newborn calves are tagged individually with a bar code, and are registered to the database, so that everyone can know the information regarding individual cattle and meat. However, the management of frozen semen and the validation of frozen straws are out of the scope of the system. A traceability system for beef production totally covering the progression from semen to meat is necessary for food safety and validation. We applied radio frequency identification (RFID) for the identification of individual frozen semen straws. RFID is the management technology that uses a small tag with a radio transmitter (RFID tag) that has recently been used in the field of distribution management. We consider this technology as a tool to trace artificial insemination (AI) data before the birth of a calf and to establish a management system for production of the Japanese Black cattle breed. The microchip (�-chip) we used as an RFID tag was manufactured by Hitachi, Ltd., Tokyo, Japan. The �-chip is the smallest RFID chip in the world (0.4 mm square) and has a unique identification number (capable of corresponding to 128 bits, 1038 in decimal notation) readable by the RFID tag reader. The �-chip was attached to the frozen semen straw by ultrasonic sealing. We demonstrated that the �-chip retained its function after being stored in liquid nitrogen for at least several months. The information for bull semen, which was dispensed into frozen semen straws with the attached �-chips, was stored in the system database, and the straws were stored in liquid nitrogen. These straws with the �-chips were distributed to local farmers and inseminated into recipient cattle; the AI conditions, results of pregnancy diagnosis, and birth conditions were recorded in the system database. This system using the �-chips may be useful for confirmation and acquisition of trust for a commercially valuable bull and for the study of the improvement of AI for reproduction.
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Nishibe T, Kudo F, Miyazaki K, Kondo Y, Nishibe M, Dardik A. Relationship between air-plethysmographic venous function and clinical severity in primary varicose veins. INT ANGIOL 2006; 25:352-5. [PMID: 17164740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
AIM The role of air plethysmography (APG) in the diagnosis of chronic venous insufficiency has not been well established. The purpose of this study was to elucidate the relationship between APG parameters and clinical severity in patients with chronic venous insufficiency. METHODS Two hundred and ninety-four limbs in 154 patients with primary varicose veins were evaluated by APG. Limbs were categorized according to the clinical classification of chronic venous disease suggested by the Ad Hoc Committee on Reporting Standards in Venous Disease of the North American Chapter of the Society for Vascular Surgery and International Society for Cardiovascular Surgery (SVS/ ISCVS). RESULTS The venous filling index (VFI) was significantly higher in classes 2, 3, 4, and 5+6 than in class 0 or 1, and did not differ among classes 2, 3, 4, 5+6. The ejection fraction did not differ significantly among the 6 classes, and the residual volume fraction was significantly higher in classes 2, 3, 5+6 than in class 0. CONCLUSIONS APG is a reasonable method for distinguishing the presence or absence of chronic venous insufficiency, but it cannot discriminate the clinical severity. Among APG parameters, the VFI is the most useful diagnostic parameter in the evaluation of chronic venous insufficiency.
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Fukuda S, Kuwayama M, Takao S, Shimazu Y, Miyazaki K. Molecular epidemiology of subgenus F adenoviruses associated with pediatric gastroenteritis during eight years in Hiroshima Prefecture as a limited area. Arch Virol 2006; 151:2511-7. [PMID: 16847553 DOI: 10.1007/s00705-006-0816-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2006] [Accepted: 06/06/2006] [Indexed: 10/24/2022]
Abstract
We have studied the prevalence of the subgenus F adenoviruses and the molecular characteristics of adenovirus type 41 in Hiroshima Prefecture, Japan, as a limited area during the period of 1997-2004. Subgenus F adenoviruses were detected in 30 (3.4%) of 892 fecal specimens by enzyme immunoassay (EIA), and 80.0% (24 of 30) of positive patients were <36 months old. One (3.3%) and 29 (96.7%) of the 30 EIA-positive specimens were adenoviruses type 40 (Ad40) and 41 (Ad41), respectively. The genomes of Ad41 strains amplified by PCR were divided into two genomic type clusters (GTC1 and GTC2) based on the hexon gene as described by Li et al. (J Clin Microbiol 42: 4032-4039, 2004.). Twenty-one (95.5%) of 22 Ad41 strains detected between 2000 and 2004 belonged to GTC1, whereas all seven strains detected between 1997 and 1999 belonged to GTC2. These genomic typings were the same for the hexon and fiber genes except for one strain. This strain contained a hexon gene belonging to GTC1 and a fiber gene belonging to GTC2 and was considered to be a recombinant between adenoviruses of these types.
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