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Aoyama T, Nishikawa K, Fujitani K, Tanabe K, Ito S, Matsui T, Miki A, Nemoto H, Sakamaki K, Fukunaga T, Kimura Y, Hirabayashi N, Yoshikawa T. Early results of a randomized two-by-two factorial phase II trial comparing neoadjuvant chemotherapy with two and four courses of cisplatin/S-1 and docetaxel/cisplatin/S-1 as neoadjuvant chemotherapy for locally advanced gastric cancer. Ann Oncol 2018; 28:1876-1881. [PMID: 28486692 DOI: 10.1093/annonc/mdx236] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Neoadjuvant chemotherapy (NAC) is a promising method of improving the survival of resectable gastric cancer. Cisplatin/S-1 (CS) and docetaxel/cisplatin/S-1 (DCS) are both effective against metastatic gastric cancer. This report clarified the impact of these regimens on early endpoints, including the pathological responses, chemotherapy-related toxicities, and surgical results. Methods Patients with M0 and either T4 or T3 in case of junctional cancer or scirrhous type received two or four courses of cisplatin (60 mg/m2 at day 8)/S-1 (80 mg/m2 for 21 days with 1 week rest) or docetaxel (40 mg/m2 at day 1)/cisplatin (60 mg/m2 at day 1)/S-1 (80 mg/m2 for 14 days with 2 weeks rest) as NAC. Patients then underwent D2 gastrectomy and adjuvant S-1 chemotherapy for 1 year. The primary endpoint was the 3-year overall survival. Results Between October 2011 and September 2014, 132 patients were assigned to receive CS (n = 66; 33 in 2 courses and 33 in 4 courses) or DCS (n = 66; 33 in 2 courses and 33 in 4 courses). The respective major grade 3 or 4 hematological toxicities (CS/DCS) were leukocytopenia (14.1%/26.2%), neutropenia (29.7%/47.7%), anemia (14.1%/12.3%), and platelet reduction (3.1%/1.5%). The rate of pathological response, defined as a complete response or < 10% residual cancer remaining, was 19.4% in the CS group and 15.4% in the DCS group, and 15.6% in the two-course group and 19.0% in the 4-course group. The R0 resection rate was 72.7% in the CS group and 81.8% in the DCS group and 80.3% in the two-course group and the 74.2% in the four-course group. No treatment-related deaths were observed. Conclusions Our results do not support three-drug therapy with a taxane over two-drug therapy, or any further treatment beyond two cycles as an attractive candidate for the test arm of NAC.
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Aguilar-Arevalo A, Aoki M, Blecher M, Britton D, vom Bruch D, Bryman D, Chen S, Comfort J, Cuen-Rochin S, Doria L, Gumplinger P, Hussein A, Igarashi Y, Ito S, Kettell S, Kurchaninov L, Littenberg L, Malbrunot C, Mischke R, Numao T, Protopopescu D, Sher A, Sullivan T, Vavilov D. Improved search for heavy neutrinos in the decay
π→eν. Int J Clin Exp Med 2018. [DOI: 10.1103/physrevd.97.072012] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mitsudera H, Miyama T, Nishigaki H, Nakanowatari T, Nishikawa H, Nakamura T, Wagawa T, Furue R, Fujii Y, Ito S. Low ocean-floor rises regulate subpolar sea surface temperature by forming baroclinic jets. Nat Commun 2018; 9:1190. [PMID: 29568009 PMCID: PMC5864925 DOI: 10.1038/s41467-018-03526-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 02/21/2018] [Indexed: 11/13/2022] Open
Abstract
Sea surface temperature (SST) fronts in mid- to high-latitude oceans have significant impacts on extratropical atmospheric circulations and climate. In the western subarctic Pacific, sharp SST fronts form between the cold subarctic water and the recently found quasi-stationary jets that advect warm waters originating in the Kuroshio northeastward. Here we present a new mechanism of the jet formation paying attention to the propagation of baroclinic Rossby waves that is deflected by eddy-driven barotropic flows over bottom rises, although their height is low (~500 m) compared with the depth of the North Pacific Ocean (~6000 m). Steered by the barotropic flows, Rossby waves bring a thicker upper layer from the subtropical gyre and a thinner upper layer from the subarctic gyre, thereby creating a thickness jump, hence a surface jet, where they converge. This study reveals an overlooked role of low-rise bottom topography in regulating SST anomalies in subpolar oceans. Sea surface temperature fronts in mid-and-high latitudes give significant impacts on atmospheric circulations and climate. Here, the authors uncover a new mechanism on the sea surface front genesis in the subpolar oceans in which small-amplitude bottom topography is surprisingly effective.
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Ogasawara K, Miyazaki T, Ito S, Yabe R, Uchikawa M, Enomoto T, Yokoya N, Hori Y, Kumamoto M, Watanabe S, Satake M. The B allele with a 5·8 kb deletion in intron 1 of the ABO gene is the major allele in Japanese individuals with B m and A 1 B m phenotypes. Vox Sang 2018; 113:393-396. [PMID: 29473176 DOI: 10.1111/vox.12642] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/20/2017] [Accepted: 01/19/2018] [Indexed: 12/23/2022]
Abstract
Bm and A1 Bm phenotypes are the most frequent ABO variants in the Japanese population. The B antigen on Bm red blood cells is only detectable by adsorption and elution tests, and plasma B-transferase activity is usually detected at half or less levels compared with that of common B. Recently, a B allele lacking an erythroid cell-specific transcription enhancer in intron 1 of the ABO gene was identified from individuals with Bm and A1 Bm phenotypes, which could explain the unique serologic properties of Bm . In the Japanese Red Cross Society, eight Blood Centers tested blood samples from donors throughout Japan and collected blood samples from 888 Bm and 415 A1 Bm individuals. DNA analysis revealed that 1300 of 1303 (99·77%) individuals had the B allele with a 5·8 kb deletion (c.28 + 5110_10889del), which included the enhancer element.
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Numata T, Nakayama K, Fujii S, Yumino Y, Saito N, Yoshida M, Kurita Y, Kobayashi K, Ito S, Utsumi H, Yanagisawa H, Hashimoto M, Wakui H, Minagawa S, Ishikawa T, Hara H, Araya J, Kaneko Y, Kuwano K. Risk factors of postoperative pulmonary complications in patients with asthma and COPD. BMC Pulm Med 2018; 18:4. [PMID: 29316890 PMCID: PMC5761153 DOI: 10.1186/s12890-017-0570-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 12/22/2017] [Indexed: 11/26/2022] Open
Abstract
Background Postoperative pulmonary complications (PPC) in patients with pulmonary diseases remain to be resolved clinical issue. However, most evidence regarding PPC has been established more than 10 years ago. Therefore, it is necessary to evaluate perioperative management using new inhalant drugs in patients with obstructive pulmonary diseases. Methods April 2014 through March 2015, 346 adult patients with pulmonary diseases (257 asthma, 89 chronic obstructive pulmonary disease (COPD)) underwent non-pulmonary surgery except cataract surgery in our university hospital. To analyze the risk factors for PPC, we retrospectively evaluated physiological backgrounds, surgical factors and perioperative specific treatment for asthma and COPD. Results Finally, 29 patients with pulmonary diseases (22 asthma, 7 COPD) had PPC. In patients with asthma, smoking index (≥ 20 pack-years), peripheral blood eosinophil count (≥ 200/mm3) and severity (Global INitiative for Asthma(GINA) STEP ≥ 3) were significantly associated with PPC in the multivariate logistic regression analysis [odds ratio (95% confidence interval) = 5.4(1.4–20.8), 0.31 (0.11–0.84) and 3.2 (1.04–9.9), respectively]. In patients with COPD, age, introducing treatment for COPD, upper abdominal surgery and operation time (≥ 5 h) were significantly associated with PPC [1.18 (1.00–1.40), 0.09 (0.01–0.81), 21.2 (1.3–349) and 9.5 (1.2–77.4), respectively]. Conclusions History of smoking or severe asthma is a risk factor of PPC in patients with asthma, and age, upper abdominal surgery, or long operation time is a risk factor of PPC in patients with COPD. Adequate inhaled corticosteroids treatment in patients with eosinophilic asthma and introducing treatment for COPD in patients with COPD could reduce PPCs.
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Senda Y, Shimizu Y, Natsume S, Ito S, Komori K, Abe T, Matsuo K, Sano T. Randomized clinical trial of duct-to-mucosa versus invagination pancreaticojejunostomy after pancreatoduodenectomy. Br J Surg 2017; 105:48-57. [PMID: 29265404 DOI: 10.1002/bjs.10727] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/23/2017] [Accepted: 09/18/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND The postoperative pancreatic fistula (POPF) rate for duct-to-mucosa and invagination anastomosis after pancreatoduodenectomy is still debated. The aim of this RCT was to investigate the POPF rate for duct-to-mucosa versus invagination pancreaticojejunostomy. METHODS Patients were stratified by pancreatic texture and diameter of the main pancreatic duct and randomized to the duct-to-mucosa or invagination group. The primary endpoint was the rate of clinically relevant POPF (defined as grade B or C). Secondary endpoints were suture material cost for pancreaticojejunostomy, drain insertion duration and duration of postoperative hospital stay. RESULTS Some 120 patients undergoing pancreatoduodenectomy were included following consent. Clinically relevant POPF developed in six of 59 patients (10 per cent) in the invagination group and in 14 of 61 patients (23 per cent) in the duct-to-mucosa group (P = 0·077). Duration of drain insertion (6 versus 7 days respectively; P = 0·027) and postoperative hospital stay (19 versus 24 days; P = 0·015) were shorter in the invagination group. Subgroup analysis for 61 patients with a soft pancreas revealed a lower rate of clinically relevant POPF in the invagination group (10 per cent versus 42 per cent in the duct-to-mucosa group; P = 0·010). Among 20 patients with a clinically relevant POPF, the six patients in the invagination group had a shorter duration of drain insertion (38·5 days versus 49 days for 14 patients in the duct-to-mucosa group; P = 0·028) and postoperative hospital stay (42 versus 54·5 days respectively; P = 0·028). CONCLUSION This study did not demonstrate a superiority of invagination over duct-to-mucosa pancreaticojejunostomy in the risk of POPF. However, in high-risk patients with a soft pancreas, invagination may reduce the risk of clinically relevant POPF compared with duct-to-mucosa. Registration number: UMIN000005890 (http://www.umin.ac.jp).
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Hattori K, Matsuda T, Takagi Y, Nagaya M, Inoue T, Mizuno Y, Nakajima H, Nishida Y, Hasegawa Y, Kawaguchi K, Fukui T, Ozeki N, Yokoi K, Ito S. P3.16-010 Preoperative Six-Minute Walk Distance Is Associated with Complications of Pneumonia after Lung Resection. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1816] [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]
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Kobayashi K, Morita M, Ito S, Inoue Y, Yamaguchi I, Kosaka T, Kuba S, Sakimura C, Soyama A, Adachi T, Ohno S, Kobayashi S, Hara T, Hidaka M, Hayashida N, Yamanouchi K, Kanetaka K, Takatsuki M, Eguchi S. S-1 and CPT-11 plus ramucirumab (IRIS+Rmab) as second-line chemotherapy for patients with oxaliplatin-refractory metastatic colorectal cancer: A multicenter phase II study in Japan (N-DOCC-F-C-1701). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shanis D, Anandi P, Grant C, Bachi A, Vyas N, Merideth MA, Pophali PA, Koklanaris E, Ito S, Savani BN, Barrett AJ, Battiwalla M, Stratton P. Risks factors and timing of genital human papillomavirus (HPV) infection in female stem cell transplant survivors: a longitudinal study. Bone Marrow Transplant 2017; 53:78-83. [DOI: 10.1038/bmt.2017.210] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/24/2017] [Accepted: 08/03/2017] [Indexed: 11/09/2022]
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Miyamoto M, Kuzuya A, Noda Y, Uemura K, Asada-Utsugi M, Fukusumi Y, Kawachi H, Ito S, Takahashi R, Kinoshita A. SV2B can regulate BACE1 localization in the hippocampus. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2151] [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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Niimi Y, Ito S, Murate K, Hirota S, Hikichi C, Ishikawa T, Maeda T, Nagao R, Kikuchi K, Shima S, Mizutani Y, Ueda A, Mutoh T. Combinatory use of 123I-FP-CIT-SPECT and cardiac 123I-metaiodobenzylguanidine scintigraphy for the diagnosis of parkinsonisms. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1663] [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]
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Ito S, Kikuchi K, Nagao R, Maeda T, Murate K, HIrota S, Hikichi C, Ishikawa T, Shima S, Mizutani Y, Niimi Y, Ueda A, Mutoh T. The serial D-dimer measurements predicts the prognoses of Trousseau’s syndrome patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3683] [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]
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113
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Nakaso K, Ito S, Matsura T. Dopamine-mediated oxidation of methionine 127 in α-Synuclein causes cytotoxicity and accumulation of alpha-synuclein. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2386] [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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Suzuki Y, Wakahara K, Nishio T, Ito S, Hasegawa Y. Airway basophils are increased and activated in eosinophilic asthma. Allergy 2017; 72:1532-1539. [PMID: 28474352 DOI: 10.1111/all.13197] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND The impact of basophils on asthma pathogenesis remains largely unexplored, particularly in humans. Here, we evaluated the frequencies and activation status of basophils in the sputum of adult asthmatic patients and related our findings to other parameters of eosinophilic airway inflammation. METHODS We enrolled 44 adult asthmatic patients who were being treated with inhaled corticosteroids (ICS). Analysis of the induced sputum, exhaled nitric oxide fraction (FeNO) measurement, and asthma control test (ACT) were carried out together with standard blood and pulmonary function tests. The cellular composition of the sputum was examined by flow cytometry, and the phenotypes of blood and sputum basophils were compared. RESULTS Basophils were increased in the sputum of asthmatic patients. The expression of CD203c on sputum basophils was significantly higher than that on blood basophils. The percentage of sputum basophils was positively correlated with those of eosinophils and mast cells; it was also correlated with that of blood eosinophils and FeNO. However, sputum basophils were not correlated with serum IgE, lung function, or the percentage of blood basophils. A receiver-operating characteristic (ROC) curve showed the superiority of sputum basophils as a surrogate marker of the percentages of sputum eosinophils compared with absolute numbers of blood eosinophils and FeNO. CONCLUSION The number of activated basophils was increased in the sputum of patients with eosinophilic asthma and correlated with airway and blood eosinophils. Our observations suggest that sputum basophils may serve as a biomarker to monitor new therapeutic approaches for the treatment of eosinophilic asthma.
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Tanaka C, Kanda M, Misawa K, Ito S, Ito Y, Mochizuki Y, Ishigure K, Yaguchi T, Teramoto J, Nakayama H, Kawase Y, Fujiwara M, Kodera Y. Nutritional recovery after open and laparoscopic distal gastrectomy for early gastric cancer: A prospective multicenter comparative trial (CCOG1204). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.041] [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] Open
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Narita Y, Sasaki E, Yatabe Y, Kato K, Okano H, Mitani S, Honda K, Masuishi T, Taniguchi H, Kadowaki S, Ura T, Ando M, Tajika M, Ito S, Muro K. PD-L1 immunohistochemistry (IHC) by three different assays and molecular profiling in tissue microarray (TMA) of gastric cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.060] [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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Yoshikawa T, Terashima M, Mizusawa J, Nunobe S, Nishida Y, Kaji M, Fukushima N, Hato S, Choda Y, Yabusaki H, Yoshida K, Ito S, Takeno A, Yasuda T, Kawachi Y, Katayama H, Fukuda H, Boku N, Sano T, Sasako M. A randomized phase III trial comparing 4 courses and 8 courses of S-1 adjuvant chemotherapy for p-stage II gastric cancer: JCOG1104 (OPAS-1). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kariya T, Minami R, Imai T, Kubo S, Shimozuma T, Takahashi H, Yoshimura Y, Ito S, Mutoh T, Ota M, Endo Y, Sakamoto K. Development of Mega-Watt Gyrotrons for Fusion Research. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst11-a11622] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kariya T, Minami R, Imai T, Shimozuma T, Kubo S, Yoshimura Y, Takahashi H, Ito S, Mutoh T, Nakabayashi H, Eguchi T, Numakura T, Endo Y, Mitsunaka Y, Sakamoto K. Development of 154 GHz 1 MW Gyrotron for ECRH of LHD. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst13-a16923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ito S, Watanabe H, Morimoto T, Horiuchi H, Kimura T. P495Clinical Impact on Baseline Thrombocytopenia in Percutaneous Coronary Intervention. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ohno S, Aoki H, Nishihara M, Furusho A, Hirakata S, Nishida N, Ito S, Hayashi M, Akashi H, Tanaka H, Fukumoto Y. P690Macrophage Stat3 promotes progression of aortic dissection via M1 differentiation and smooth muscle dedifferentiation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ito S, Ito S, Kodani N, Endo A, Okada T, Watanabe N, Ouchi T, Yoshitomi H, Tanabe K. 4777Clinical utility of 99mTc-PYP and 201Tl-Cl SPECT imaging using quantitative evaluation in patients with suspected cardiac amyloidosis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.4777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Endo A, Okada T, Kagawa Y, Pak M, Ito S, Ouchi T, Watanabe N, Yamaguchi K, Yoshitomi H, Tanabe K. 5968Comparison of the low-density lipoprotein cholesterol target value and the preventive effect of statins in elderly patients and younger patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Nishida N, Aoki H, Ohno S, Nishihara M, Furusho A, Hirakata S, Hayashi M, Ito S, Yasukawa H, Fukumoto Y. P5396Synergistic effect of high salt and IL-17 worsens aortic dissection by dysregulation of extracellular matrix. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ito S, Aoki H, Nishihara M, Ohno S, Furusho A, Hirakata S, Nishida N, Hayashi M, Fukumoto Y. 3851Myocardin-related transcription factor-A is required for development of aortic dissection. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.3851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sakamoto T, Pak M, Ito S, Okada T, Kagawa Y, Nakamura T, Ouchi T, Watanabe N, Endo A, Yoshitomi H, Tanabe K. P5263Cutoff for left ventricular ejection fraction that will change from reduced to preserved or preserved to reduced in patients with heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Furusho A, Aoki H, Nishihara M, Ohno S, Hirakata S, Nishida N, Ito S, Hayashi M, Akashi H, Tanaka H, Fukumoto Y. 3849Involvement of B cell/Syk axis in development of abdominal aortic aneurysm. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.3849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tsubouchi K, Araya J, Minagawa S, Hara H, Ichikawa A, Saito N, Kadota T, Sato N, Yoshida M, Kurita Y, Kobayashi K, Ito S, Fujita Y, Utsumi H, Yanagisawa H, Hashimoto M, Wakui H, Yoshii Y, Ishikawa T, Numata T, Kaneko Y, Asano H, Yamashita M, Odaka M, Morikawa T, Nakayama K, Nakanishi Y, Kuwano K. Azithromycin attenuates myofibroblast differentiation and lung fibrosis development through proteasomal degradation of NOX4. Autophagy 2017; 13:1420-1434. [PMID: 28613983 DOI: 10.1080/15548627.2017.1328348] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Accumulation of profibrotic myofibroblasts is involved in the process of fibrosis development during idiopathic pulmonary fibrosis (IPF) pathogenesis. TGFB (transforming growth factor β) is one of the major profibrotic cytokines for myofibroblast differentiation and NOX4 (NADPH oxidase 4) has an essential role in TGFB-mediated cell signaling. Azithromycin (AZM), a second-generation antibacterial macrolide, has a pleiotropic effect on cellular processes including proteostasis. Hence, we hypothesized that AZM may regulate NOX4 levels by modulating proteostasis machineries, resulting in inhibition of TGFB-associated lung fibrosis development. Human lung fibroblasts (LF) were used to evaluate TGFB-induced myofibroblast differentiation. With respect to NOX4 regulation via proteostasis, assays for macroautophagy/autophagy, the unfolded protein response (UPR), and proteasome activity were performed. The potential anti-fibrotic property of AZM was examined by using bleomycin (BLM)-induced lung fibrosis mouse models. TGFB-induced NOX4 and myofibroblast differentiation were clearly inhibited by AZM treatment in LF. AZM-mediated NOX4 reduction was restored by treatment with MG132, a proteasome inhibitor. AZM inhibited autophagy and enhanced the UPR. Autophagy inhibition by AZM was linked to ubiquitination of NOX4 via increased protein levels of STUB1 (STIP1 homology and U-box containing protein 1), an E3 ubiquitin ligase. An increased UPR by AZM was associated with enhanced proteasome activity. AZM suppressed lung fibrosis development induced by BLM with concomitantly reduced NOX4 protein levels and enhanced proteasome activation. These results suggest that AZM suppresses NOX4 by promoting proteasomal degradation, resulting in inhibition of TGFB-induced myofibroblast differentiation and lung fibrosis development. AZM may be a candidate for the treatment of the fibrotic lung disease IPF.
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Kurita Y, Araya J, Minagawa S, Hara H, Ichikawa A, Saito N, Kadota T, Tsubouchi K, Sato N, Yoshida M, Kobayashi K, Ito S, Fujita Y, Utsumi H, Yanagisawa H, Hashimoto M, Wakui H, Yoshii Y, Ishikawa T, Numata T, Kaneko Y, Asano H, Yamashita M, Odaka M, Morikawa T, Nakayama K, Kuwano K. Pirfenidone inhibits myofibroblast differentiation and lung fibrosis development during insufficient mitophagy. Respir Res 2017; 18:114. [PMID: 28577568 PMCID: PMC5457546 DOI: 10.1186/s12931-017-0600-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/26/2017] [Indexed: 01/23/2023] Open
Abstract
Background Pirfenidone (PFD) is an anti-fibrotic agent used to treat idiopathic pulmonary fibrosis (IPF), but its precise mechanism of action remains elusive. Accumulation of profibrotic myofibroblasts is a crucial process for fibrotic remodeling in IPF. Recent findings show participation of autophagy/mitophagy, part of the lysosomal degradation machinery, in IPF pathogenesis. Mitophagy has been implicated in myofibroblast differentiation through regulating mitochondrial reactive oxygen species (ROS)-mediated platelet-derived growth factor receptor (PDGFR) activation. In this study, the effect of PFD on autophagy/mitophagy activation in lung fibroblasts (LF) was evaluated, specifically the anti-fibrotic property of PFD for modulation of myofibroblast differentiation during insufficient mitophagy. Methods Transforming growth factor-β (TGF-β)-induced or ATG5, ATG7, and PARK2 knockdown-mediated myofibroblast differentiation in LF were used for in vitro models. The anti-fibrotic role of PFD was examined in a bleomycin (BLM)-induced lung fibrosis model using PARK2 knockout (KO) mice. Results We found that PFD induced autophagy/mitophagy activation via enhanced PARK2 expression, which was partly involved in the inhibition of myofibroblast differentiation in the presence of TGF-β. PFD inhibited the myofibroblast differentiation induced by PARK2 knockdown by reducing mitochondrial ROS and PDGFR-PI3K-Akt activation. BLM-treated PARK2 KO mice demonstrated augmentation of lung fibrosis and oxidative modifications compared to those of BLM-treated wild type mice, which were efficiently attenuated by PFD. Conclusions These results suggest that PFD induces PARK2-mediated mitophagy and also inhibits lung fibrosis development in the setting of insufficient mitophagy, which may at least partly explain the anti-fibrotic mechanisms of PFD for IPF treatment.
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Haraguchi G, Ohe M, Kumanomido J, Obuchi A, Ito S, Ueno S, Fukumoto Y. P1560Body-surface QRST integral mapping can predict the long-term prognosis of cardiac resynchronization therapy. Europace 2017. [DOI: 10.1093/ehjci/eux158.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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131
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Kumanomido J, Ohe M, Haraguchi G, Obuchi A, Ito S, Ueno S, Fukumoto Y. P1409New approach for persistent and long persistent atrial fibrillation: Early Area Defragmentation (EADF). Europace 2017. [DOI: 10.1093/ehjci/eux158.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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132
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Wang J, Johnson T, Sahin L, Tassinari MS, Anderson PO, Baker TE, Bucci-Rechtweg C, Burckart GJ, Chambers CD, Hale TW, Johnson-Lyles D, Nelson RM, Nguyen C, Pica-Branco D, Ren Z, Sachs H, Sauberan J, Zajicek A, Ito S, Yao LP. Evaluation of the Safety of Drugs and Biological Products Used During Lactation: Workshop Summary. Clin Pharmacol Ther 2017; 101:736-744. [PMID: 28510297 DOI: 10.1002/cpt.676] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/22/2017] [Accepted: 02/27/2017] [Indexed: 12/15/2022]
Abstract
This report serves as a summary of a 2-day public workshop sponsored by the US Food and Drug Administration (FDA) to discuss the safety of drugs and biological products used during lactation. The aim of the workshop was to provide a forum to discuss the collection of data to inform the potential risks to breastfed infants with maternal use of medications during lactation. Discussions included the review of current approaches to collect data on medications used during lactation, and the considerations for future approaches to design and guide clinical lactation studies. This workshop is part of continuing efforts to raise the awareness of the public for women who choose to breastfeed their infants.
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133
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Ito S. Drugs for Children. Clin Pharmacol Ther 2017; 101:704-706. [PMID: 28510298 DOI: 10.1002/cpt.675] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 02/16/2017] [Indexed: 11/11/2022]
Abstract
The "Therapeutic Orphan" status of children is gradually improving, but our efforts to eliminate off-label/off-evidence use must be sustained for safer and more effective pediatric drug therapy. This is even more important in resource-scarce settings, because of the increasing child population in those regions. The juncture of pediatric pharmacology and global child health represents an emerging field of clinical pharmacology illuminating a crucial societal need on a global scale.
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134
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Ueyama T, Arimura T, Takumi K, Nakamura F, Higashi R, Ito S, Fukukura Y, Umanodan T, Nakajo M, Koriyama C, Yoshiura T. EP-1215: Risk factors of radiation pneumonitis after SRT: the usefulness of the PTV to lung volume ratio. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31650-x] [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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135
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Sasaki M, Kim E, Nunomiya T, Nakamura T, Nakao N, Shibata T, Uwamino Y, Ito S, Fukumura A. Measurements of High-Energy Neutrons Penetrated Through Concrete Shields Using Self-TOF, NE213, and Activation Detectors. NUCL SCI ENG 2017. [DOI: 10.13182/nse02-a2273] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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136
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Bromberg L, Hashizume H, Ito S, Minervini JV, Yanagi N. Status of High Temperature Superconducting Fusion Magnet Development. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst11-a12455] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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137
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Takahashi H, Shimozuma T, Kubo S, Ito S, Kobayashi S, Yoshimura Y, Igami H, Mizuno Y, Takita Y, Mutoh T, Kariya T, Minami R, Imai T. The Development of a 77-GHz, 1-MW ECRH System for the Large Helical Device. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst10-a9265] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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138
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Mizuno Y, Ito S, Hattori K, Nagaya M, Inoue T, Nishida Y, Onishi Y, Kamei H, Kurata N, Hasegawa Y, Ogura Y. Changes in Muscle Strength and Six-Minute Walk Distance Before and After Living Donor Liver Transplantation. Transplant Proc 2017; 48:3348-3355. [PMID: 27931580 DOI: 10.1016/j.transproceed.2016.08.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/22/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND Impaired exercise capacity and muscle weakness are important characteristics of liver transplantation recipients. Perioperative rehabilitation has been introduced to promote early mobilization of patients and to prevent postoperative pulmonary complications. However, it is unknown how physical status recovers during the hospital stay after a liver transplant. The purpose of this study was to evaluate the changes in clinical indicators that represent the functional exercise capacity and muscle strength before and after living donor liver transplantation (LDLT). METHODS We retrospectively reviewed 21 consecutive patients who underwent LDLT with perioperative rehabilitation from April 2014 to December 2015. Twelve patients who were tested for 6-minute walk distance, hand-grip strength, and isometric knee extensor muscle strength before and 4 weeks after LDLT were enrolled. RESULTS At the preoperative baseline, the 6-minute walk distance significantly correlated with the Model for End-stage Liver Disease score and pulmonary functions (vital capacity, forced vital capacity, and forced expiratory volume in 1 second of predictive values). Comparisons between the preoperative and postoperative values revealed significant decreases in weight, Barthel Index, hand-grip strength, and isometric knee extensor muscle strength. Changes in hand-grip strength and isometric knee extensor muscle strength after LDLT correlated with the preoperative Model for End-stage Liver Disease score. CONCLUSIONS Physical functional status had not been fully recovered 4 weeks after LDLT. Further investigation regarding developing a strategy for prevention of muscle atrophy before LDLT and recovery of physical fitness after LDLT would be helpful.
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Shimozuma T, Takahashi H, Kubo S, Yoshimura Y, Igami H, Takita Y, Kobayashi S, Ito S, Mizuno Y, Idei H, Notake T, Sato M, Ohkubo K, Watari T, Mutoh T, Minami R, Kariya T, Imai T. ECRH-Related Technologies for High-Power and Steady-State Operation in LHD. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst58-530] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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140
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Yoshimura Y, Kubo S, Shimozuma T, Igami H, Takahashi H, Kobayashi S, Ito S, Mizuno Y, Takita Y, Nakamura Y, Ohkubo K, Ikeda R, Ida K, Yoshinuma M, Sakakibara S, Mutoh T, Nagasaki K, Idei H, Notake T. Progress Toward Steady-State Operation in LHD Using Electron Cyclotron Waves. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst58-551] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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141
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Nunes AT, Jain P, Kleiner DE, Shah NN, Anandi P, Chinian F, Muranski P, Battiwalla M, Barrett AJ, Ito S. High angiopoietin-2 and suppression of tumorigenicity-2 levels correlate with onset of sinusoidal obstructive syndrome-implication for the utility of serial biomarker monitoring. Bone Marrow Transplant 2017; 52:926-928. [PMID: 28287645 DOI: 10.1038/bmt.2017.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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142
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Tokunaga M, Ito S, Yoshikawa T, Nunobe S, Fukagawa T, Misawa K, Cho H, Katai H, Sano T, Terashima M. Prognostic factors for survival in patients with pT1 N+ or T2–3 N0 gastric cancer in Japan. Br J Surg 2017; 104:885-890. [DOI: 10.1002/bjs.10509] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/07/2016] [Accepted: 01/13/2017] [Indexed: 01/22/2023]
Abstract
Abstract
Background
The outcome for pT1 N+ or pT2–3 N0 gastric cancer is favourable, but some patients suffer from recurrent disease. The aim of this study was to identify prognostic factors in patients with pT1 N+ or pT2–3 N0 gastric cancer.
Methods
This was a multicentre, retrospective cohort study. All patients with pT1 N+ or pT2–3 N0 gastric cancer who underwent curative gastrectomy at five high-volume, specialized cancer centres in Japan between 2000 and 2008 were included. Demographic, clinical, surgical and pathological data were collected. Independent prognostic factors were identified using a Cox proportional hazards regression model.
Results
Some 1442 patients were included. The 5-year overall survival rate for patients with pT1 N+ or pT2–3 N0 gastric cancer was 92·0 per cent. Multivariable analysis for overall survival identified age (hazard ratio (HR) 2·67, 95 per cent c.i. 2·09 to 3·43), sex (HR 0·57, 0·39 to 0·83) and clinical tumour depth (cT) (HR 1·45, 1·06 to 1·98) as independent prognostic factors.
Conclusion
Survival of patients with pT1 N+ or pT2–3 N0 gastric cancer is good. Age 65 years or above, male sex and cT2-4 category are associated with worse overall survival.
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Soejima Y, Yoshizumi T, Ikegami T, Harimoto N, Harada N, Ito S, Motomura T, Uchiyama H, Maehara Y. In Situ Procurement of a Recipient's Portal Vein for a Right Lobe Liver Graft With Multiple Venous Orifices: A Case Report. Transplant Proc 2017; 49:172-174. [PMID: 28104129 DOI: 10.1016/j.transproceed.2016.10.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 09/27/2016] [Accepted: 10/27/2016] [Indexed: 11/28/2022]
Abstract
Reconstruction of multiple venous orifices of a right lobe graft is a time-consuming and troublesome procedure in right lobe living-donor liver transplantation. In the current study, we present a new venous reconstruction technique for a right lobe graft with multiple and complex hepatic vein (HV) orifices, in which procurement of the recipient's left portal vein was performed in situ to keep the anhepatic period to a minimum. All of the HV orifices were reconstructed together at the back table, while maintaining patency of the recipient's systemic and splanchnic circulation. A homologous vein graft and veno-venous bypass were not necessary. All HVs were patent during the follow-up and the patient was free from complications. In conclusion, the present technique is readily available for reconstruction of complex and multiple HV tributaries, while avoiding a long anhepatic time and the use of veno-venous bypass.
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144
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Ida S, Hiki N, Cho H, Sakamaki K, Ito S, Fujitani K, Takiguchi N, Kawashima Y, Nishikawa K, Sasako M, Aoyama T, Honda M, Sato T, Nunobe S, Yoshikawa T. Randomized clinical trial comparing standard diet with perioperative oral immunonutrition in total gastrectomy for gastric cancer. Br J Surg 2017; 104:377-383. [PMID: 28072447 DOI: 10.1002/bjs.10417] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/19/2016] [Accepted: 09/30/2016] [Indexed: 11/12/2022]
Abstract
BACKGROUND Total gastrectomy for gastric cancer is associated with excessive weight loss and decreased calorie intake. Nutritional support using eicosapentaenoic acid modulates immune function and limits catabolism in patients with advanced cancer, but its impact in the perioperative period is unclear. METHODS This was a randomized phase III clinical trial of addition of eicosapentaenoic acid-rich nutrition to a standard diet in patients having total gastrectomy for gastric cancer. Patients were randomized to either a standard diet or standard diet with oral supplementation of an eicosapentaenoic acid (ProSure®), comprising 600 kcal with 2·2 g eicosapentaenoic acid, for 7 days before and 21 days after surgery. The primary endpoint was percentage bodyweight loss at 1 and 3 months after surgery. RESULTS Of 127 eligible patients, 126 were randomized; 124 patients (61 standard diet, 63 supplemented diet) were analysed for safety and 123 (60 standard diet, 63 supplemented diet) for efficacy. Across both groups, all but three patients underwent total gastrectomy with Roux-en-Y reconstruction. Background factors were well balanced between the groups. Median compliance with the supplement in the immunonutrition group was 100 per cent before and 54 per cent after surgery. The surgical morbidity rate was 13 per cent in patients who received a standard diet and 14 per cent among those with a supplemented diet. Median bodyweight loss at 1 month after gastrectomy was 8·7 per cent without dietary supplementation and 8·5 per cent with eicosapentaenoic acid enrichment (P = 0·818, adjusted P = 1·000). Similarly, there was no difference between groups in percentage bodyweight loss at 3 months (P = 0·529, adjusted P = 1·000). CONCLUSION Immunonutrition based on an eicosapentaenoic acid-enriched oral diet did not reduce bodyweight loss after total gastrectomy for gastric cancer compared with a standard diet. Registration number: UMIN000006380 ( http://www.umin.ac.jp/).
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145
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Ito S, Yasuda N. Effects of playing position on hydration status in varsity marching band players. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.01.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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146
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Ito S, Nagami T, Nakano M. Rational design of doubly-bridged chromophores for singlet fission and triplet–triplet annihilation. RSC Adv 2017. [DOI: 10.1039/c7ra06032g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel multiple-bridging realizes rational molecular design for efficient singlet fission and triplet–triplet annihilation.
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Abstract
Open-shell aggregates with pancake bonding are found to cause highly efficient singlet fission and large charge transport simultaneously.
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148
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Tao W, Akita S, Nakano R, Ito S, Hoshimoto Y, Ogoshi S, Nozaki K. Copolymerisation of ethylene with polar monomers by using palladium catalysts bearing an N-heterocyclic carbene–phosphine oxide bidentate ligand. Chem Commun (Camb) 2017; 53:2630-2633. [DOI: 10.1039/c7cc00002b] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the synthesis and characterisation of palladium complexes bearing an N-heterocyclic carbene–phosphine oxide bidentate ligand and their use as catalysts for ethylene polymerisation and ethylene/polar monomer copolymerisation.
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149
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Tsutsumi Y, Tateno T, Ito S, Shiratori S, Teshima T. Successful T-cell Replete Hematopoietic Stem Cell Boost Without Conditioning for Late Graft Failure. Transplant Proc 2016; 48:3225-3226. [PMID: 27932187 DOI: 10.1016/j.transproceed.2016.06.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/05/2016] [Accepted: 06/06/2016] [Indexed: 10/20/2022]
Abstract
Late graft failure is a rare but significant complication after allogeneic stem cell transplantation, which is often complicated by severe infections. We report a case of late graft failure, which was successfully treated with a T-cell replete hematopoietic stem cell boost without conditioning that induced rapid engraftment and relieved the patient of infection. Discontinuation of immunosuppressants and nilotinib administration suppressed the host cells. Achieving full donor chimerism allowed us to administer a peripheral blood stem cell boost without conditioning.
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150
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Pashley DH, Tay FR, Yiu C, Hashimoto M, Breschi L, Carvalho RM, Ito S. Collagen Degradation by Host-derived Enzymes during Aging. J Dent Res 2016; 83:216-21. [PMID: 14981122 DOI: 10.1177/154405910408300306] [Citation(s) in RCA: 613] [Impact Index Per Article: 76.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Incompletely infiltrated collagen fibrils in acid-etched dentin are susceptible to degradation. We hypothesize that degradation can occur in the absence of bacteria. Partially demineralized collagen matrices (DCMs) prepared from human dentin were stored in artificial saliva. Control specimens were stored in artificial saliva containing proteolytic enzyme inhibitors, or pure mineral oil. We retrieved them at 24 hrs, 90 and 250 days to examine the extent of degradation of DCM. In the 24-hour experimental and 90- and 250-day control specimens, we observed 5- to 6-μm-thick layers of DCM containing banded collagen fibrils. DCMs were almost completely destroyed in the 250-day experimental specimens, but not when incubated with enzyme inhibitors or mineral oil. Functional enzyme analysis of dentin powder revealed low levels of collagenolytic activity that was inhibited by protease inhibitors or 0.2% chlorhexidine. We hypothesize that collagen degradation occurred over time, via host-derived matrix metalloproteinases that are released slowly over time.
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