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Taniguchi M, Kanagawa M, Takeda S, Miyagoe-Suzuki SY, Takeda S, Endo T, Kobayashi K, Campbell K, Toda T. EM.O.2 Residual laminin-binding activity and enhanced dystroglycan glycosylation by LARGE in novel model mice to dystroglycanopathy. Neuromuscul Disord 2009. [DOI: 10.1016/j.nmd.2009.06.176] [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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102
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Matsunaga S, Endo T, Yagita K, Hirukawa Y, Tomino S, Matsugo S, Tsuruhara T. Chromosome size polymorphisms in the genus acanthamoeba electrokaryotype by pulsed-field gel electrophoresis. Protist 2009. [PMID: 23194715 DOI: 10.1016/s1434-4610(98)70039-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Twenty-eight strains from 12 species from the genus Acanthamoeba, including five isolates from amoebic keratitis patients, were subjected to molecular karyotyping by pulsed-field gel electrophoresis. 9 to 21 chromosome-sized DNA bands ranging from 200 kb to 3 Mb in size were detected. Molecular karyotypes also showed a wide multifariousness, i.e. there existed inter- and intraspecific heterogeneity. The five isolates from amoebic keratitis patients did not exhibit characteristic molecular karyotypes distinguishable from environmental isolates. Although karyotypic heterogeneity was observed within group I amoeba, they are distinguishable from those of group II and III. Strains having identical restriction fragment length polymorphism profiles of mtDNA did not have an identical molecular karyotype, i.e. weak correlation was found between molecular karyotypes and mtDNA restriction fragment length polymorphism profiles.
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Murayama N, Iseki E, Endo T, Nagashima K, Yamamoto R, Ichimiya Y, Arai H, Sato K. Risk factors for delusion of theft in patients with Alzheimer's disease showing mild dementia in Japan. Aging Ment Health 2009; 13:563-8. [PMID: 19629781 DOI: 10.1080/13607860902774402] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The mechanism underlying delusion in Alzheimer's disease patients has not been fully clarified; however, the occurrence of delusion is a critical issue for dementia patients and their caregivers. In Japan, delusion of theft is the most frequent delusion in AD patients. We examined the risk factors for delusion of theft in AD patients showing mild dementia. Fifty-six AD patients were administered HDS-R, MMSE and COGNISTAT, including the 'speech sample', to assess their neuropsychological and social cognitive functions. The age, years of education, presence of cohabiting family members and premorbid personality traits were obtained from family members. About 25.0% of AD patients showed delusion of theft (D-group), and 75% did not (non-D-group). About 33.3% of female patients and 5.9% of male patients were included in the D-group (p < 0.05). About 13.6% of patients who were cohabiting with family members and 66.7% of patients who were living alone were included in the D-group (p < 0.05). About 35.1% of patients who had a neurotic personality and 5.3% of patients who did not were included in the D-group (p < 0.05). There were no significant differences in scores on HDS-R, MMSE and COGNISTAT sub-scales, except for 'speech sample', between the two groups. In the 'speech sample', 38.7% of patients who understood a relationship between two boys and 12.0% of patients who did not were included in the D-group (p < 0.05). These results indicated that delusion of theft in AD patients was related to female gender, absence of cohabiting family members, neurotic personality and retained social cognitive function.
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Nakano T, Endo S, Tsubochi H, Endo T, Tezuka Y, Kanai Y, Otani S, Tetsuka K, Sato Y, Sohara Y. [Video-assisted thoracoscopic removal for mediastinal mature teratoma following extraction of cystic components]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2009; 62:358-361. [PMID: 19425373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Video-assisted thoracoscopic resection for mediastinal mature teratoma is sometimes converted to open thoracotomy. Because it has rich components including pancreatic tissue and dense adhesion, even when it is asymptomatic. Prior to thoracoscopic resection, extraction of the cystic components with the aid of a 20 Fr tube can provide a wide thoracoscopic view leading to easier complete removal. Between October 1998 and June 2008, 6 patients (1 man and 5 women) with benign mediastinal mature teratoma underwent the thoracoscopic operations. The average age was 36.3 (range, 24-54). The mean diameter was 9.0 cm (range, 5-11 cm). The mean operation time was 143 minutes and the mean blood loss was 103 ml. Neither complications nor tumor recurrences developed during the mean follow-up period of 3.4 years. The presented thoracoscopic surgery for benign mature teratoma is a feasible procedure.
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Kosuge M, Kimura K, Ishikawa T, Endo T, Shigemasa T, Sugiyama M, Tochikubo O, Umemura S. Electrocardiographic criteria for predicting total occlusion of the proximal left anterior descending coronary artery in anterior wall acute myocardial infarction. Clin Cardiol 2009; 24:33-8. [PMID: 11195604 PMCID: PMC6655066 DOI: 10.1002/clc.4960240106] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Patients with occlusion of the left anterior descending coronary artery (LAD) proximal to both the first septal branch and the first diagonal branch may benefit most from early reperfusion therapy due to extensive area at risk. HYPOTHESIS The aim of the study was to examine whether 12-lead electrocardiograms (ECGs) in the acute phase of acute myocardial infarction (AMI) could identify total occlusion of the LAD proximal to both the first septal and the first diagonal branch. METHODS A 12-lead electrocardiogram was recorded on admission in 128 patients with anterior AMI within 12 h from symptom onset. Patients were divided into three groups according to the culprit lesion: 33 patients had total occlusion of the LAD proximal to both the first septal perforator and the first diagonal branch (Group P), in 51 it was proximal to either the first septal perforator or the first diagonal branch (Group D-a), and in 44 it was distal to both the first septal perforator and the first diagonal branch (Group D-b). RESULTS Sensitivity and specificity of a greater degree of ST-segment depression in lead III than that of ST-segment elevation in lead aVL were 85 and 95%, respectively, which was better than the results derived by all other ECG criteria (p< 0.001). CONCLUSIONS We conclude that a greater degree of ST-segment depression in lead III than that of ST-segment elevation in lead aVL is a useful predictor of proximal LAD occlusion in patients with anterior AMI.
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Inomata A, Kishida N, Momoda T, Akiba M, Izumiyama S, Yagita K, Endo T. Development and evaluation of a reverse transcription-loop-mediated isothermal amplification assay for rapid and high-sensitive detection of Cryptosporidium in water samples. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2009; 60:2167-2172. [PMID: 19844064 DOI: 10.2166/wst.2009.599] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We describe a novel assay for simple, rapid and high-sensitive detection of Cryptosporidium oocysts in water samples using a reverse transcription-loop-mediated isothermal amplification (RT-LAMP). The assay is based on the detection of 18S rRNA specific for Cryptosporidium oocysts. The detection limit of the developed RT-LAMP assay was as low as 6 x 10(-3) oocysts/test tube, which theoretically enables us to detect a Cryptosporidium oocyst and perform duplicated tests even if water samples contain only one oocyst. The developed RT-LAMP assay could more sensitively detect Cryptosporidium oocysts in real water samples than the conventional assay based on microscopic observation.
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Endo T, Hasegawa T, Tezuka Y, Kanai Y, Otani S, Yamamoto S, Tetsuka K, Sato Y, Endo S, Sohara Y. [Atypical pulmonary carcinoid tumor with abnormal elevation of serum gastrin-releasing peptide precursor: report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2008; 61:993-995. [PMID: 18939440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report a rare case of atypical pulmonary carcinoid tumor accompanied by elevation of serum gastrin-releasing peptide precursor (ProGRP). A 55-year-old male presented to our hospital with a history of bloody sputum. The level of serum ProGRP was elevated to 781 pg/ml (normal < 46 pg/ml). Chest computed tomography (CT) revealed a solitary pulmonary tumor in the left lower lobe with sub-carinal lymph node enlargement. Transbronchial lung biopsy showed a pulmonary carcinoid, therefore left lower lobectomy with mediastinal lymph node dissection was performed. ProGRP decreased to normal level 1 month after operation. Histopathological diagnosis showed an atypical pulmonary carcinoid tumor.
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Tsubochi H, Endo S, Nakano T, Endo T, Kanai Y, Tezuka Y, Otani S, Saito N, Yamamoto S, Tetsuka K, Tsukada H, Sato Y, Hasegawa T, Sohara Y. [Surgical outcome of tracheobronchial reconstruction for lung cancer]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2008; 61:934-938. [PMID: 18939428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We retrospectively evaluated the surgical outcome after sleeve lobectomy and pneumonectomy with tracheobronchial reconstruction for lung cancer. From 1993 to 2008, 46 patients with primary lung cancer underwent these surgical procedures. Seventeen patients (37%) received induction therapy, 15 received chemotherapy, while chemoradiotherapy or radiotherapy alone were received by one patient each. Sleeve lobectomy without carinal resection was performed in 41 patients. Carinal resection with 2 sleeve pneumonectomies was performed in 5 patients. There were no operative deaths. Bronchopleural fistula occurred in one patient, who required completion pneumonectomy. One patient presented local mucosal necrosis in the anastomotic site and was managed conservatively. Two patients had bronchial strictures as late complications and successfully dilated by a balloon using bronchoscopy. Overall 5-year and 10-year survival rates were 54% and 48%, respectively. No recurrence developed at any anastomotic site. The results showed that sleeve lobectomy and pneumonectomy with tracheobronchial reconstruction can be performed with low mortality and bronchial anastomotic complication rates. As well, local control of the tumor was satisfactory.
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Hayashi K, Endo T, Nakanishi M, Furukawa S, Jorbert FJ, Nagaki Y, Nomoto H, Tamiya N. On the Mode of Action of Snake Postsynaptic Neurotoxins. ACTA ACUST UNITED AC 2008. [DOI: 10.3109/15569548609012707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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110
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Nagase H, Ogawa N, Endo T, Shiro M, Ueda H, Sakurai M. Crystal Structure of an Anhydrous Form of Trehalose: Structure of Water Channels of Trehalose Polymorphism. J Phys Chem B 2008; 112:9105-11. [DOI: 10.1021/jp800936z] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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111
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Nishio M, Endo T, Nakao S, Sato N, Koike T. Reversible cardiomyopathy due to secondary hemochromatosis with multitransfusions for severe aplastic anemia after successful non-myeloablative stem cell transplantation. Int J Cardiol 2008; 127:400-1. [PMID: 17582528 DOI: 10.1016/j.ijcard.2007.04.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2007] [Accepted: 04/04/2007] [Indexed: 10/23/2022]
Abstract
A 30-year-old Japanese woman with acquired severe aplastic anemia (SAA), diagnosed 20 years ago, was referred to our institution for allogeneic stem cell transplantation (SCT). As an unusual case of long-standing SAA, the patient was complicated with moderate heart failure due to secondary hemochromatosis. After successful SCT using a non-myeloablative conditioning regimen, she needed no transfusion. Five years after SCT, echocardiography showed a dramatic improvement of her cardiac function. This case indicates that the cardiac function in secondary hemochromatosis could be reversed once iron overload from multitransfusions is stopped.
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Nitori N, Hasegawa H, Ishii Y, Endo T, Kitajima M, Kitagawa Y. Sexual function in men with rectal and rectosigmoid cancer after laparoscopic and open surgery. HEPATO-GASTROENTEROLOGY 2008; 55:1304-1307. [PMID: 18795677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND/AIMS Postoperative sexual dysfunction is a serious problem in rectal cancer patients. Although laparoscopic surgery for rectal cancer is reportedly feasible, there are few studies comparing male sexual function after laparoscopic and after open surgery. The aim of this study was to investigate and compare the incidences and degrees of this complication between laparoscopic and open surgery for rectal cancer. METHODOLOGY Male patients undergoing anterior resection for rectal cancer between 1994 and 2001 without recurrence were identified in a database. A retrospective analysis of sexual function before and after surgery was conducted using a postal questionnaire consisting of 5 questions regarding libido, erection, rigidity, ejaculation, and satisfaction. RESULTS Of 68 sexually active male patients who returned the questionnaires, 29 (42.6%) underwent laparoscopic surgery (LS) and 39 (57.4%), open surgery (OS). Each parameter was reduced following LS as well as OS. No significant difference was found between the changes in each score and the total score between LS and OS. According to univariate analysis, the lower tumor location was significantly associated with sexual dysfunction (p = 0.0111). CONCLUSIONS Male sexual dysfunction following laparoscopic surgery for rectal cancer is commensurate with that after open surgery. Lower tumor location is the only factor associated with male sexual dysfunction.
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Kadono T, Shigemori K, Fujioka S, Otani K, Sano T, Sakawa Y, Azechi H, Ozaki N, Kimura T, Miyanishi K, Endo T, Arakawa M, Nakamura AM, Sugita S, Matsui T. Impact vaporization of rocks using a high-power laser. ACTA ACUST UNITED AC 2008. [DOI: 10.1088/1742-6596/112/4/042014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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114
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Shindo G, Endo T, Onda M, Hiroi M, Tsutae W. Alpha-1-antitrypsin deficiency (Siiyama) as indication for lung transplantation: proper timing for surgical intervention. MINERVA CHIR 2008; 63:241-247. [PMID: 18577911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The authors report a new familial case of alpha-1- antitrypsin (AAT) deficiency with severe pulmonary emphysema and hemoptysis. A severely reduced serum AAT level of the proband, a 56-year-old farmer's wife and her sister were observed. Mutation analysis of the AAT gene was performed using allele-specific polymerase chain reaction (PCR) analysis followed by direct sequencing. The proband and her younger sister proved to be homozygous for PISiiyama. Although home oxygen therapy was induced in addition to previous medications including bronchodilators and cardiovascular conditioning, the proband's rate of decline of forced expiratory volume at one second (FEV1) was progressing. Lung transplantation was therefore advisable for the patient. Clinical analysis on Japanese cases reported in the literature shows that the rate of decline of FEV1 is one of the most convenient prognostic factors to find proper timing for surgical intervention. Lung transplantation is one of the best reliable current therapies to improve quality of life of severely impaired patients.
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Takahashi K, Ito T, Endo T, Chiba S, Ito K, Osada H. Algorithm for Temperature Control in the Skunk Cabbage, Symplocarpus Foetidus. BIOTECHNOL BIOTEC EQ 2008. [DOI: 10.1080/13102818.2008.10817588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Furuishi T, Fukami T, Nagase H, Suzuki T, Endo T, Ueda H, Tomono K. Improvement of solubility of C70 by complexation with cyclomaltononaose (delta-cyclodextrin). DIE PHARMAZIE 2008; 63:54-57. [PMID: 18271304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We investigated the solubilizing effects of cyclomaltononaose (delta-CD), a cyclic oligosaccharide composed of nine alpha-1,4-linked D-glucose units, on C70 by using the ball-milling method based on a solid-solid mechanochemical reaction. The complex between C70 and delta-CD was characterized by UV-VIS spectrometry and fast atom bombardment mass spectrometry (FAB-MS). Coloration of the C70/delta-CD system was red-brown in aqueous solution, and the UV-VIS spectrum was in agreement with that of C70 in hexane solution. The FAB-MS spectrum of the C70/delta-CD system showed a negative ion peak corresponding to the molecular weight of a complex between two delta-CD and one C70. These findings suggest that the solubilization of C70 in water was due to complex formation of C70 with delta-CD, and the stoichiometric ratio of this complex was 1: 2 (C70: delta-CD).
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Endo T. Dystroglycan glycosylation and its role in alpha-dystroglycanopathies. ACTA MYOLOGICA : MYOPATHIES AND CARDIOMYOPATHIES : OFFICIAL JOURNAL OF THE MEDITERRANEAN SOCIETY OF MYOLOGY 2007; 26:165-170. [PMID: 18646566 PMCID: PMC2949307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Glycosylation is the most common post-translational modification of proteins. The protein sequence data suggested that more than half of all proteins produced in mammalian cells are glycoproteins. Glycans of secreted glycoproteins affect many protein properties such as solubility, stability, protease sensitivity, and polarity, while glycans on cell surface glycoproteins are involved in various cellular functions including cell-cell and cell-matrix interactions during embryogenesis, immune reactions, and tumor development. The past decade of research on glycan function has revealed the etiology of a growing number of human genetic diseases with aberrant glycan formation. This review focuses upon the involvement of O-mannosylglycan in the molecular and cellular mechanisms of muscular dystrophies. Advances in glycobiology are expected to result in a better understanding and in improved treatments of a class of muscular dystrophies called alpha-dystroglycanopathies.
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Miyagoe-Suzuki Y, Miyamoto K, Saito F, Matsumura K, Manya H, Endo T, Takeda S. C.P.3.12 POMGnT1-null myoblasts poorly proliferate in vitro. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Yanagisawa A, Bouchet C, Manya H, Quijano-Roy S, van den Bergh P, Viollet L, Cuisset J, Leturcq F, Romero N, Fardeau M, Seta N, Endo T, Guicheney P. C.P.3.03 Novel POMT2 mutations associated with a marked reduction of POMT activity causing congenital muscular dystrophy with mental retardation and microcephaly. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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120
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Manya H, Suzuki T, Akasaka-Manya K, Dohmae N, Endo T. C.P.3.08 Biochemical approach for α-dystroglycanopathies: Identification of consensus sequence for protein O-mannosylation. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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121
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Kobata A, Mizuochi T, Endo T, Furukawa K. Function and pathology of the sugar chains of human immunoglobulin G. CIBA FOUNDATION SYMPOSIUM 2007; 145:224-35; discussion 235-40. [PMID: 2791753 DOI: 10.1002/9780470513828.ch13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Human immunoglobulin G (IgG) is unique among serum glycoproteins because it contains more than 30 different biantennary complex-type asparagine-linked oligosaccharides. This extremely high microheterogeneity is probably produced because human individuals have a series of B cell clones equipped with different sets of glycosyltransferases. Despite this complex composition, IgG samples purified from whole human sera have the same mole ratios of oligosaccharides, indicating that the ratio of B cell clones synthesizing IgGs with different sugar chains is constant in healthy individuals. We found that the glycosylation patterns of whole serum IgGs obtained from patients with rheumatoid arthritis (RA) are quite different from those of whole serum from healthy individuals. Structural studies of the oligosaccharides revealed that the sugar chains of the IgGs obtained from patients with RA are depleted of the beta-galactose residues. The sugar chains of transferrin from patients with RA are fully galactosylated. Therefore the galactose deletion from IgG is probably brought about by a decrease in galactosyltransferase activity in B cells rather than by degradation by galactosidase during circulation. Enzymic study revealed that human B cells contain various beta-galactosyltransferases which form the Gal(beta 1-4)GlcNAc groups in the sugar chains of different glycoproteins. Among these enzymes, abnormality in patients with RA was found only in the one that transfers beta-galactose residues specifically to degalactosylated IgG. This enzyme showed lower affinity toward UDP-Gal in B cells of patients with RA than that in healthy individuals.
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Yasuda G, Yatsu K, Ando D, Saka S, Endo T, Hirawa N, Umemura S. PO23-748 EFFECTS OF ATORVASTATIN VERSUS PROBUCOL ON LOW-DENSITY LIPOPROTEIN SUBTYPE DISTRIBUTION AND RENAL FUNCTION IN HYPERLIPIDEMIC PATIENTS WITHNON-DIABETIC NEPHROPATHY. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71758-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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123
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Kamimura K, Mishima Y, Obata M, Endo T, Aoyagi Y, Kominami R. Lack of Bcl11b tumor suppressor results in vulnerability to DNA replication stress and damages. Oncogene 2007; 26:5840-50. [PMID: 17369851 DOI: 10.1038/sj.onc.1210388] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Bcl11b/Rit1 is involved in T-cell development and undergoes chromosomal rearrangements in human T-cell leukemias. Thymocytes of Bcl11b(-/-) newborn mice exhibit apoptosis at a certain developmental stage when thymocytes re-enter into the cell-cycle. Here, we show that Bcl11b-knockdown T-cell lines, when exposed to growth stimuli, exhibited apoptosis at the S phase with concomitant decreases in a cell-cycle inhibitor, p27 and an antiapoptotic protein, Bcl-xL, owing to transcriptional repression. This repression was a likely consequence of the impairment of Sirt1, a nicotinamide adenine dinucleotide-dependent deacetylase associating with Bcl11b. Activation of the apoptotic process cleaved the mediator protein, Claspin, and inhibited phosphorylation of cell-cycle checkpoint kinase 1 (Chk1) that plays a central role in sensing and responding to incomplete replication. Bcl11b(-/-) thymocytes also failed to phosphorylate Chk1 when UV irradiated. These results implicate Bcl11b in the remedy for DNA replication stress and maintenance of genomic integrity.
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Hasegawa H, Ishii Y, Nishibori H, Endo T, Watanabe M, Kitajima M. Short- and midterm outcomes of laparoscopic surgery compared for 131 patients with rectal and rectosigmoid cancer. Surg Endosc 2007; 21:920-4. [PMID: 17285382 DOI: 10.1007/s00464-006-9132-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2006] [Revised: 08/13/2006] [Accepted: 10/09/2006] [Indexed: 12/13/2022]
Abstract
BACKGROUND This study aimed to clarify and compare the short- and midterm surgical outcomes of laparoscopic surgery for rectal and rectosigmoid cancer. METHODS Between June 1992 and December 2004, 131 selected patients with cancer of the rectum (n = 60) and rectosigmoid (n = 71) underwent laparoscopic surgery. The indications for laparoscopy included a preoperative diagnosis of T1/T2 tumor in the rectum and T1-T3 tumors in the rectosigmoid. RESULTS The mean follow-up period was 42 months. The procedures included anterior resection for 117 patients, abdominoperineal resection for 11 patients, Hartmann's procedure for 1 patient, and restorative proctocolectomy for 1 patient. Conversion to an open procedure occurred for four patients (3.1%). Postoperative complications developed in 29 patients (22.1%), including anastomotic leakage in 14 patients (11.8%). The length of hospital stay for the rectal cases was significantly longer than for the rectosigmoid cases (10 vs 7 days; p = 0.0049). The tumor node metastasis (TNM) stages included 0 (n = 14), I (n = 72), II (n = 15), III (n = 29), and IV (n = 1). Recurrences were experienced by 13 patients, including local recurrence (n = 7) and recurrences involving the liver ((n = 2), lung (n = 3), and distant lymph nodes (n = 1). The 5-year disease-free and overall survival rates were, respectively 91.7% and 97.9% for stage I, 86.7% and 90.9% for stage II, and 77.1% and 90.0% for stage III. CONCLUSIONS Laparoscopic surgery is feasible and safe for selected patients with rectal or rectosigmoid cancer. The selected patients in this study experienced favorable short- and midterm outcomes.
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Baker CS, Lukoschek V, Lavery S, Dalebout ML, Yong-un M, Endo T, Funahashi N. Incomplete reporting of whale, dolphin and porpoise 'bycatch' revealed by molecular monitoring of Korean markets. Anim Conserv 2006. [DOI: 10.1111/j.1469-1795.2006.00062.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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