76
|
Iwata H, Ogino H, Iwana M, Shibata H, Yasui K, Ueno T, Toshito T, Omachi C, Mizoe J, Shibamoto Y. Relative Biological Effectiveness of Passive-Scattering Proton Therapy Using a Range Modulation Wheel at the Nagoya Proton Therapy Center: An In Vitro Study With 4 Cell Lines. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
77
|
Iwana M, Iwata H, Ishikura S, Yasui K, Nagayoshi J, Nagase T, Baba F, Ogino H, Mizoe J, Shibamoto Y. Dose Prescription to 40% to 90% Isodose Lines for the Target in Stereotactic Body Radiation Therapy for Lung Tumors: Which Prescription Line Is Optimal? Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
78
|
Murai T, Ogino H, Manabe Y, Okumura T, Matsushita Y, Tsuji Y, Iwabuchi M, Shibamoto Y. Fractionated Stereotactic Radiation Therapy Using Robotic Radiosurgery for the Treatment of Large Brain Metastases. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
79
|
Shirai H, Poetsch AR, Gunji A, Maeda D, Fujimori H, Fujihara H, Yoshida T, Ogino H, Masutani M. PARG dysfunction enhances DNA double strand break formation in S-phase after alkylation DNA damage and augments different cell death pathways. Cell Death Dis 2013; 4:e656. [PMID: 23744356 PMCID: PMC3698538 DOI: 10.1038/cddis.2013.133] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Poly(ADP-ribose) glycohydrolase (PARG) is the primary enzyme responsible for the degradation of poly(ADP-ribose). PARG dysfunction sensitizes cells to alkylating agents and induces cell death; however, the details of this effect have not been fully elucidated. Here, we investigated the mechanism by which PARG deficiency leads to cell death in different cell types using methylmethanesulfonate (MMS), an alkylating agent, and Parg−/− mouse ES cells and human cancer cell lines. Parg−/− mouse ES cells showed increased levels of γ-H2AX, a marker of DNA double strand breaks (DSBs), accumulation of poly(ADP-ribose), p53 network activation, and S-phase arrest. Early apoptosis was enhanced in Parg−/− mouse ES cells. Parg−/− ES cells predominantly underwent caspase-dependent apoptosis. PARG was then knocked down in a p53-defective cell line, MIAPaCa2 cells, a human pancreatic cancer cell line. MIAPaCa2 cells were sensitized to MMS by PARG knockdown. Enhanced necrotic cell death was induced in MIAPaCa2 cells after augmenting γ-H2AX levels and S-phase arrest. Taken together, these data suggest that DSB repair defect causing S-phase arrest, but p53 status was not important for sensitization to alkylation DNA damage by PARG dysfunction, whereas the cell death pathway is dependent on the cell type. This study demonstrates that functional inhibition of PARG may be useful for sensitizing at least particular cancer cells to alkylating agents.
Collapse
|
80
|
Ogino H, Watanabe K, Ikegaya Y, Kawachi J, Shimoyama R, Isogai N. Protocol-based strategy for endovascular repair of ruptured abdominal aortic aneurysms. Ann Vasc Dis 2013; 6:169-74. [PMID: 23825497 DOI: 10.3400/avd.oa.12.00085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 02/09/2013] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Compared with conventional open surgery (COS), endovascular aneurysm repair (EVAR) has been reported to decrease the 30-day mortality rate in patients with ruptured abdominal aortic aneurysms (rAAAs). We developed an EVAR-first strategy for rAAAs that incorporates the Shonan ruptured abdominal aortic aneurysm protocol (SRAP). We describe short-term results with this protocol at our institution and compare them with outcomes in patients who underwent COS. METHODS The records of all 57 patients in whom a rAAA was repaired during a 7-year period were reviewed retrospectively. Patients in the COS group (n = 30) were treated between January 2005 and December 2009; those in the SRAP group (n = 27) were treated between January 2010 and March 2012. The two groups were compared with respect to patient characteristics at admission, including severity of condition; operative and in-hospital variables; and 30-day mortality. RESULTS The baseline patient characteristics in the COS and SRAP groups were similar except that the SRAP group had a significantly higher rate of cerebrovascular disease. The 30-day mortality rate was significantly higher in the COS group (43% vs. 19%), as were the intraoperative mortality rate (27% vs. 5%) and the in-hospital mortality rate (57% vs. 26%; P < 0.05 for all comparisons). The technical success rate for EVAR was 96%; no conversions to open surgery were required. CONCLUSIONS Use of the SRAP is a promising strategy for improving initial outcomes in patients with rAAAs.
Collapse
|
81
|
Iwabuchi M, Sugie C, Ogino H, Ayakawa S, Baba F, Shibamoto Y. Treatment of Primary Central Nervous System Lymphoma (PCNSL): Comparison of Whole Brain Radiation Therapy and Partial Brain Radiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
82
|
Yanagi T, Iwana M, Iwata H, Ogino H, Hashizume C, Sugie C, Baba F, Murata R, Ishikura S, Shibamoto Y. Usefulness of Induction Chemotherapy Followed by Chemoradiation in the Treatment of Hypopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1306] [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]
|
83
|
Hayashi A, Shibamoto Y, Otsuka S, Iwata H, Baba F, Sugie C, Yanagi T, Murata R, Ogino H, Ishikura S. Elevation of Baseline PSA Levels After Intensity Modulated Radiation Therapy (IMRT) for Prostate Cancer: Discrimination From Biochemical Failure. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1036] [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]
|
84
|
Hiramatsu K, Sakata H, Horita Y, Orita N, Kida A, Mizukami A, Miyazawa M, Hirai S, Shimatani A, Matsuda K, Matsuda M, Ogino H, Fujinaga H, Terada I, Shimizu K, Uchiyama A, Ishizawa S, Abo H, Demachi H, Noda Y. Mesenteric phlebosclerosis associated with long-term oral intake of geniposide, an ingredient of herbal medicine. Aliment Pharmacol Ther 2012; 36:575-86. [PMID: 22817400 DOI: 10.1111/j.1365-2036.2012.05221.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Revised: 06/27/2012] [Accepted: 06/29/2012] [Indexed: 01/13/2023]
Abstract
BACKGROUND Idiopathic mesenteric phlebosclerosis (IMP) is a rare disease, characterised by thickening of the wall of the right hemicolon with calcification of mesenteric veins. However, the aetiology remains unknown. AIM To investigate the possible association of herbal medicines with IMP. METHOD The clinical data of four of our own patients were collected. Furthermore, we searched for previous reports about similar patients with detailed descriptions of herbal prescriptions that they had taken. We compared herbal ingredients to identify the toxic agent as a possible aetiological factor. RESULTS Clinical data on a total of 25 patients were summarised. Mean age was 61.8 years and there was female predominance (6 men and 19 women). The used Kampo prescription, the number of cases, and the mean duration of use were as follows: kamisyoyosan in 12 cases for 12.8 years, inshin-iseihaito in 5 cases for 13.4 years, orengedokuto in 4 cases for 14.3 years, inchinkoto in 1 case for 20 years, kamikihitou in 1 case for 19 years, seijobofuto in 1 case for 10 years and gorinsan in 1 case for an unknown duration. Only one ingredient, sansisi, was common to the herbal medicines of all 25 patients. This crude drug called geniposide in English is a major constituent of the Gardenia fruits. CONCLUSION The long-term use of geniposide in herbal medicines appears to be associated with mesenteric phlebosclerosis.
Collapse
|
85
|
Itagaki R, Tanaka M, Ogino H, Ikegaya Y, Shimada N, Katayama I, Itoh S. [Two-staged hybrid surgery for an extended thoracic aortic aneurysm with Komerell's diverticulum]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2012; 65:868-871. [PMID: 22940656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have successfully performed 2 staged hybrid operation for an extended thoracic aortic aneurysm with Komerell diverticulum, which lessened surgical stress of the patient with avoidance of postoperative complications. An 82-year-old man who had been under observation for thoracic aortic aneurysm was admitted to the hospital with continuous chest discomfort. The patient initially underwent graft replacement for an ascending and arch aneurysm by using the elephant trunk technique. Thirty-five days later, he underwent endovascular repair for the residual descending thoracic aneurysm. The postoperative course was uneventful, and postoperative computed tomography (CT) revealed no stent migration and just a little type II endoleak. This 2 staged hybrid approach might be less invasive than the conventional approach, and be a potential therapeutic option for high risk patients with an extended thoracic aortic aneurysm.
Collapse
|
86
|
Ogino H. [Aortic dissection with ischemia of the abdominal organs]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2012; 65:653-659. [PMID: 22868423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Abdominal organ ischemia associated with aortic dissection is a serious problem, although its incidence is not so high. In particular, the prognosis of bowel ischemia is extremely poor, especially, in cases with the diagnosis delayed and with extensive bowel ischemia. Consequently, 1st it should be suspected, in cases with abdominal pain or distension associated with acute or chronic aortic dissection. Then, its pathology should be assessed quickly with enhanced computed tomography (CT) or ultrasound examination to clarify the mechanism of critical organ ischemia including dynamic obstruction or static obstruction of the visceral arteries. According to the mechanism of abdominal organ ischemia, the best treatment of catheter interventions such as catheter fenestration, endovascular aortic repair, and branch-stenting, or of conventional open surgery such as surgical abdominal aortic fenestration, graft replacement, and branch-bypass should be appropriately chosen without delay.
Collapse
|
87
|
Shibamoto Y, Otsuka S, Iwata H, Miyakawa A, Sugie C, Ogino H, Ito M. PO-0941 INADEQUACY OF USING THE LINEAR-QUADRATIC MODEL IN HIGH-DOSE-PER-FRACTION RADIOTHERAPY: IN VITRO AND IN VIVO STUDY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71274-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
88
|
Iida Y, Xu B, Schultz J, Turner C, Ogino H, Dalman R. Inhibition of CXCL4-CCL5 Chemokine Interaction Ameliorates the Development of Abdominal Aortic Aneurysm in Mice. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
89
|
Doukyu N, Ishikawa K, Watanabe R, Ogino H. Improvement in organic solvent tolerance by double disruptions of proV and marR genes in Escherichia coli. J Appl Microbiol 2012; 112:464-74. [PMID: 22257006 DOI: 10.1111/j.1365-2672.2012.05236.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS To investigate the involvement of osmoprotectant transporters in organic solvent tolerance in Escherichia coli and to construct an E. coli strain with high organic solvent tolerance. METHODS AND RESULTS The organic solvent tolerance of ΔbetT, ΔproV, ΔproP or ΔputP single-gene knockout mutants of E. coli K-12 strain was examined. Among these mutants, the organic solvent tolerance of the ΔproV mutant remarkably increased compared with that of the parent strain. It has been known that a marR mutation confers tolerance on E. coli to organic solvents. A ΔproV and ΔmarR double-gene mutant was more tolerant to organic solvents than the ΔproV or ΔmarR single-gene mutant. The n-hexane amount accumulated in E. coli cells was examined after incubation in an n-hexane-aqueous medium two-phase system. The intracellular n-hexane level in the ΔproV and ΔmarR double-gene mutant was kept lower than those of the parent strain, ΔproV mutant and ΔmarR mutant. CONCLUSIONS The organic solvent tolerance level in E. coli highly increased by dual disruption of proV and marR. SIGNIFICANCE AND IMPACT OF THE STUDY This study suggests a new strategy for increasing the organic solvent tolerance level in E. coli to improve the usability of the whole-cell biocatalysts in two-phase systems employing organic solvents.
Collapse
|
90
|
Baba F, Shibamoto Y, Hashizume C, Matsui T, Takemoto S, Miyakawa A, Kosaki K, Murata R, Mori Y, Ogino H. Clinical Outcome of Stereotactic Body Radiotherapy (SBRT) for Metastatic Lung Tumors using a Radiobiology-based Regimen. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1856] [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]
|
91
|
Ogino H, Shibamoto Y, Murai T, Suzuki H, Matsushita Y, Tsuji Y, Okumura T, Yamada R. Five-fraction CyberKnife Stereotactic Radiotherapy for Acoustic Neuroma: Evaluation of Three Different Dose Levels. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
92
|
Hayashi A, Shibamoto Y, Miyakawa A, Murai T, Otsuka S, Iwata H, Sugie C, Yanagi T, Ogino H, Ishikura S. Definitive Concurrent Chemotherapy and High-dose (60-70 Gy) Radiotherapy for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.531] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
93
|
Sato S, Matsuda H, Fukuda T, Ogino H. Staged Hybrid Repairs of Acute Type A Aortic Dissection Involving the Right Aortic Arch with Retroesophageal Aortic Segment. Eur J Vasc Endovasc Surg 2011. [DOI: 10.1016/j.ejvs.2011.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
94
|
Shimohira M, Ogino H, Kawai T, Kushita A, Watanabe M, Kawaguchi T, Kurono K, Shibamoto Y. Use of the triaxial microcatheter method in super-selective transcatheter arterial chemoembolisation for hepatocellular carcinoma. Br J Radiol 2011; 84:184-7. [PMID: 21257838 DOI: 10.1259/bjr/26974088] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Transcatheter arterial chemoembolisation (TACE) has been widely used for inoperable hepatocellular carcinoma (HCC). Super-selective TACE is preferable to non-selective therapy, because it maximises the impact of treatment on the tumour while minimising damage to tumour-free liver parenchyma. It is therefore important to advance the catheter tip as close as possible in the feeding artery. There is now a new microcatheter with a 1.9-Fr tip with no taper, which can be inserted into a 2.7-Fr microcatheter. In this study we describe the new technique of using the two microcatheters called the triaxial microcatheter method. METHODS We evaluated 30 TACE procedures to investigate whether or not the catheter tip could be advanced closer to HCC with the triaxial microcatheter method than with previous TACE using a conventional microcatheter. RESULTS With conventional microcatheters, the level of embolisation was a lobar artery in 4 cases, segmental in 8 cases, subsegmental in 15 cases and sub-subsegmental in only 1 case. TACE could not be performed in two cases. When using the triaxial microcatheter method the level of embolisation was subsegmental in 8 cases, including 2 in which the level was the same as that with a conventional microcatheter, sub-subsegmental in 13 cases and more distal in 7 cases. In the two cases in which TACE could not be performed with the conventional microcatheter, it could be performed sufficiently using the new method. As a whole, in 28 of the 30 procedures (93%) we could successfully advance a catheter tip closer than with the previous TACE. CONCLUSION The triaxial microcatheter method appears to be useful.
Collapse
|
95
|
Iwasa T, Nakamura K, Ogino H, Itaba S, Akiho H, Okamoto R, Iboshi Y, Aso A, Murao H, Kanayama K, Ito T, Takayanagi R. Multiple ulcers in the small and large intestines occurred during tocilizumab therapy for rheumatoid arthritis. Endoscopy 2011; 43:70-2. [PMID: 21108178 DOI: 10.1055/s-0030-1255931] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Tocilizumab is a monoclonal antibody against human interleukin-6 receptor which blocks the binding of interleukin-6 to its receptor. Tocilizumab is effective for the treatment of inflammatory disorders including rheumatoid arthritis. We report a case of multiple ulcers in the small and large intestines, which occurred during tocilizumab therapy. A 57-year-old woman started to use tocilizumab for rheumatoid arthritis. Three months later, she complained of hematochezia. Double-balloon endoscopy revealed multiple small aphthoid ulcers in the small and large intestines. One month after the woman had recovered, she was given tocilizumab again. The woman had hematochezia and abdominal pain again 2 weeks later. Colonoscopy revealed multiple round, discrete punched-out ulcers in the terminal ileum, and vast deep ulcers from the cecum to the descending colon. Bioptic histopathology and cultivation showed non-specific findings. Six weeks after discontinuation of tocilizumab, ulcers in the small and large intestine dramatically improved, leaving ulcer scars. This disease course and the results of examination made us strongly suspect that tocilizumab induced multiple ulcers in the small and large intestines. Interleukin-6 is a pleiotropic cytokine and involved in intestinal mucosal wound healing as well as in inflammatory processes. It is possible that tocilizumab inhibited tissue repair of the intestine and caused intestinal ulcers.
Collapse
|
96
|
Sakurai K, Nishio M, Sasaki S, Ogino H, Tohyama J, Yamada K, Shibamoto Y. Postpuncture CSF leakage: A potential pitfall of radionuclide cisternography. Neurology 2010; 75:1730-4. [DOI: 10.1212/wnl.0b013e3181fc2997] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
97
|
Ogino H, Miyamoto K, Ishikawa H. Organic-solvent-tolerant bacterium which secretes organic-solvent-stable lipolytic enzyme. Appl Environ Microbiol 2010; 60:3884-6. [PMID: 16349423 PMCID: PMC201903 DOI: 10.1128/aem.60.10.3884-3886.1994] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A bacterial strain which could be grown in a medium containing organic solvents and which could secrete lipolytic enzyme was isolated. The stability of the lipolytic activity of the supernatant of the culture increased significantly in the presence of organic solvents such as toluene, cyclohexane, ethanol, and acetone.
Collapse
|
98
|
Fujihara H, Ogino H, Maeda D, Shirai H, Nozaki T, Kamada N, Jishage K, Tanuma S, Takato T, Ochiya T, Sugimura T, Masutani M. Poly(ADP-ribose) Glycohydrolase deficiency sensitizes mouse ES cells to DNA damaging agents. Curr Cancer Drug Targets 2010; 9:953-62. [PMID: 20025604 DOI: 10.2174/156800909790192419] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Poly(ADP-ribose) glycohydrolase (Parg) is the main enzyme for degradation of poly(ADP-ribose) by splitting ribose-ribose bonds. Parg-deficient (Parg(+/-) and Parg(-/-)) mouse ES cell lines have been established by disrupting both alleles of Parg exon 1 through gene-targeting. A transcript encoding a full length isoform of Parg was eliminated and only low amounts of Parg isoforms were detected in Parg(-/-) embryonic stem (ES) cells. Poly(ADP-ribose) degradation activity was decreased to one-tenth of that in Parg(+/+) ES cells. Parg(-/-) ES cells exhibited the same growth rate as Parg(+/+) ES cells in culture. Sensitivity of Parg(-/-) ES cells to various DNA damaging agents, including an alkylating agent dimethyl sulfate, cisplatin, gemcitabine, 5-fluorouracil, camptothecin, and gamma-irradiation was examined by clonogenic survival assay. Parg(-/-) ES cells showed enhanced lethality after treatment with dimethyl sulfate, cisplatin and gamma-irradiation compared with wild-type (Parg(+/+)) ES cells (p<0.05, respectively). In contrast, a sensitization effect by Parg-deficiency was not observed with gemcitabine and camptothecin. These results suggest the possibility that functional inhibition of Parg leads to sensitization of tumor cells to some chemo- and radiation therapies.
Collapse
|
99
|
Mizutani T, Akiho H, Khan WI, Murao H, Ogino H, Kanayama K, Nakamura K, Takayanagi R. Persistent gut motor dysfunction in a murine model of T-cell-induced enteropathy. Neurogastroenterol Motil 2010; 22:196-203, e65. [PMID: 19735478 DOI: 10.1111/j.1365-2982.2009.01396.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) patients in remission often experience irritable bowel syndrome (IBS)-like symptoms. We investigated the mechanism for intestinal muscle hypercontractility seen in T-cell-induced enteropathy in recovery phase. METHODS BALB/c mice were treated with an anti-CD3 antibody (100 microg per mouse) and euthanized at varying days post-treatment to investigate the histological changes, longitudinal smooth muscle cell contraction, cytokines (Th1, Th2 cytokines, TNF-alpha) and serotonin (5-HT)-expressing enterochromaffin cell numbers in the small intestine. The role of 5-HT in anti-CD3 antibody-induced intestinal muscle function in recovery phase was assessed by inhibiting 5-HT synthesis using 4-chloro-DL-phenylalanine (PCPA). KEY RESULTS Small intestinal tissue damage was observed from 24 h after the anti-CD3 antibody injection, but had resolved by day 5. Carbachol-induced smooth muscle cell contractility was significantly increased from 4 h after injection, and this muscle hypercontractility was evident in recovery phase (at day 7). Th2 cytokines (IL-4, IL-13) were significantly increased from 4 h to day 7. 5-HT-expressing cells in the intestine were increased from day 1 to day 7. The 5-HT synthesis inhibitor PCPA decreased the anti-CD3 antibody-induced muscle hypercontractility in recovery phase. CONCLUSIONS & INFERENCES Intestinal muscle hypercontractility in remission is maintained at the smooth muscle cell level. Th2 cytokines and 5-HT in the small intestine contribute to the maintenance of the altered muscle function in recovery phase.
Collapse
|
100
|
Matsuda H, Fukuda T, Iritani O, Nakazawa T, Tanaka H, Sasaki H, Minatoya K, Ogino H. Spinal Cord Injury is Not Negligible after TEVAR for Lower Descending Aorta. Eur J Vasc Endovasc Surg 2010; 39:179-86. [DOI: 10.1016/j.ejvs.2009.11.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Accepted: 11/15/2009] [Indexed: 10/20/2022]
|