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Takahashi S, Kurita Y, Ikeda T, Miyamoto M, Uemiya S, Oumi Y. Synthesis and crystal structures of a novel layered silicate SSA-1 and its microporous derivatives by topotactic transformation. Dalton Trans 2016; 45:16335-16344. [PMID: 27722727 DOI: 10.1039/c6dt02983c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a novel layered silicate SSA-1 (SSA: silicate synthesized with a quaternary amine) was achieved in the SiO2-H2O-TEAOH (TEAOH: tetraethylammonium hydroxide - as an organic structural directing agent) system. The crystal structure of SSA-1 involved two silicate layers composed of bre [10T]-type CBU (Composite Building Unit) and TEAOH in interlayers. The topotactic transformation of SSA-1 by calcination was examined, resulting in a porous material (PML-1: porous material transformed from a layered silicate) with a 108 m2 g-1 BET surface area and 0.035 cm3 g-1 pore volume. PML-1 is a siliceous microporous material with silanols in the framework and possesses unique properties, such as hydrophilicity, in spite of all its silica composition. The most reasonable crystal structure of PML-1 was successfully determined on the basis of the crystal structure of SSA-1 by a combination of manual modelling, PXRD pattern simulation, DFT optimization and Rietveld analysis. Additionally, an interlayer expanded siliceous zeolite SSA-1 (IEZ-SSA-1) was also successfully prepared by silylation using trichloro(methyl)silane under acidic conditions. IEZ-SSA-1 showed hydrophilicity or hydrophobicity properties by changing the functional group of the pillar part in the interlayer. Additionally, IEZ-SSA-1 showed a large gas adsorption property (537 m2 g-1 and 0.21 cm3 g-1).
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Suzuki S, Kohno T, Fujimori S, Ikeda T, Iida T, Sakai E. F-155LONG-TERM OUTCOME OF 3-PORT THORACOSCOPIC LOBECTOMY AND THE IMPORTANCE OF MEDIASTINAL LYMPHADENECTOMY FOR NON-SMALL CELL LUNG CANCER. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ikeda T, Nishide T, Ohtani T, Furukawa F. The effects of vitamin A derivative etretinate on the skin of MRL mice. Lupus 2016; 14:510-6. [PMID: 16130505 DOI: 10.1191/0961203305lu2144oa] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
MRL/Mp-lpr/lpr (MRL/lpr) mice are characterized by the disorder of apoptosis due to defects in Fas antigens and autoimmune symptoms including spontaneous lupus erythematosus (LE)-like skin lesions. MRL/Mp- +/+ (MRL/n) mice do not carry the defect of lpr mutation nor do they exhibit skin disorders during the first six months of life. Retinoids are known to inhibit the proliferation of skin fibroblasts, collagen synthesis, modulate immune responses, and apoptosis by Fas ligand upregulation in skin fibroblasts. We examined changes in dermal thickness and appearance of skin disorders in five months old MRL/lpr mice by oral treatment with etretinate, a retinoic acid derivative. Etretinate treated MRL/lpr mice did not have skin lesions or dermatopathological characteristics including an increase in cells infiltrating the dermis. The mean dermal thickness of MRL/lpr and MRL/n mice treated with etretinate decreased significantly and apoptotic cells density in the dermis of MRL/lpr mice with etretinate was significantly higher compared with the control group (P, 0.05) although MRL/lpr mice have a defect within the Fas antigen. We assumed that etretinate reduced dermal thickness, and suppressed the appearance of skin lesions by inducting apoptosis and perhaps regulation of cytokine expression.
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Raymond JT, Topham K, Shirota K, Ikeda T, Garner MM. Tyzzer's Disease in a Neonatal Rainbow Lorikeet (Trichoglossus haematodus). Vet Pathol 2016; 38:326-7. [PMID: 11355664 DOI: 10.1354/vp.38-3-326] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A captive-born 8-day-old male rainbow lorikeet ( Trichoglossus haematodus) was found dead. Histologically, there were necrotizing hepatitis, myocarditis, and ventriculitis. Silver stain revealed argyrophilic filamentous bacilli within hepatocytes, smooth myofibers of the gizzard, and cardiac myofibers surrounding foci of necrosis. Immunohistochemistry using anti- Clostridium piliforme RT and MSK strain antisera reacted positively against bacilli within hepatocytes, cardiac myofibers, smooth myofibers of the gizzard, and splenic and intestinal macrophages. Polymerase chain reaction (PCR) assay of paraffin-embedded liver, heart, gizzard, spleen, and small intestine amplified the 196-bp DNA fragment specific to 16S ribosomal RNA of C. piliforme. The results of histopathology, immunohistochemistry, and PCR are consistent with C. piliforme infection in this lorikeet.
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Ikeda T, Takemura A, Shinichi U, Kojima H, Noto K. SU-F-J-78: Characterization of Deformable Image Registration for the Pelvic Region Based On Prostate Shifting, Image Noise and the Existence of Implanted Fiducial Markers. Med Phys 2016. [DOI: 10.1118/1.4955986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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106
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Togashi K, Moribe K, Iwama S, Matsumoto S, Yamaguchi S, Adachi K, Takahashi T, Saito S, Nobukuni T, Yamazaki T, Ikeda T. Genotype-by-environment interaction on genetic relationships between lactation persistency and conception measures in Japanese Holstein cows. Livest Sci 2016. [DOI: 10.1016/j.livsci.2015.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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107
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Okutsu N, Morohoshi T, Xie X, Kato N, Ikeda T. Characterization of N-Acylhomoserine Lactones Produced by Bacteria Isolated from Industrial Cooling Water Systems. SENSORS 2015; 16:s16010044. [PMID: 26729121 PMCID: PMC4732077 DOI: 10.3390/s16010044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 12/14/2015] [Accepted: 12/28/2015] [Indexed: 11/22/2022]
Abstract
The cooling water systems are used to remove heat generated in the various industries. Biofouling of the cooling water systems causes blocking of condenser pipes and the heat exchanger tubes. In many Gram-negative bacteria, N-acylhomoserine lactone (AHL) are used as quorum-sensing signal molecule and associated with biofilm formation. To investigate the relationship between quorum sensing and biofouling in the cooling water system, we isolated a total of 192 bacterial strains from the five cooling water systems, and screened for AHL production. Seven isolates stimulated AHL-mediated purple pigment production in AHL reporter strain Chromobacterium violaceum CV026 or VIR07. Based on their 16S rRNA gene sequences, AHL-producing isolates were assigned to Aeromonas hydrophila, Lysobacter sp., Methylobacterium oryzae, and Bosea massiliensis. To the best of our knowledge, B. massiliensis and Lysobacter sp. have not been reported as AHL-producing species in the previous researches. AHLs extracted from the culture supernatants of B. massiliensis and Lysobacter sp. were identified by liquid chromatography-mass spectrometry. AHLs produced by B. massiliensis were assigned as N-hexanoyl-l-homoserine lactone (C6-HSL), N-(3-oxohexanoyl)-l-homoserine lactone (3-oxo-C6-HSL), and N-(3-oxooctanoyl)-l-homoserine lactone (3-oxo-C8-HSL). AHLs produced by Lysobacter sp. were assigned as N-decanoyl-l-homoserine lactone (C10-HSL) and N-(3-oxodecanoyl)-l-homoserine lactone (3-oxo-C10-HSL). This is the first report of identification of AHLs produced by B. massiliensis and Lysobacter sp. isolated from the cooling water system.
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Itoh S, Shirabe K, Kimura K, Okabe H, Harimoto N, Ikegami T, Uchiyama H, Yoshizumi T, Ikeda T, Maehara Y. 219P Phase I study of sorafenib in combination with uracil-tegafur in patients with unresectable advanced hepatocellular carcinoma in Japan. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hamaoka T, Murai H, Okabe Y, Mukai Y, Tokuhisa H, Inomata J, Ikeda T, Kobayashi D, Usui S, Furusho H, Takamura M, Kaneko S. Single-unit muscle sympathetic nerve activity (MSNA) is more powerful predictor of sleep apnea syndrome patient’s severity than multiunit MSNA. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Miyoshi T, Sakaguchi H, Katsuragi S, Ikeda T, Yoshimatsu J. Novel findings of fetal ectopic atrial tachycardia by cardiotocography. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2015; 46:629-630. [PMID: 25612321 DOI: 10.1002/uog.14797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 01/13/2015] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
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Ono M, Kojima A, Shirahashi M, Noda S, Akiba Y, Nishijima S, Amagata T, Ikeda T, Yakubo K, Fukuiya T. Short, severe dizziness attacks in a pregnant woman with type I ARNOLD-Chiari malformation. J OBSTET GYNAECOL 2015; 36:430-1. [PMID: 26467350 DOI: 10.3109/01443615.2015.1090419] [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]
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112
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Takeshita K, Ishizaki M, Mitsuya R, Takahashi H, Yoshida T, Igota H, Ikeda T, Kubo MO, Kaji K. Temporal changes in molar wear rate of a sika deer population under density‐dependent food limitation. J Zool (1987) 2015. [DOI: 10.1111/jzo.12258] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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113
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Yagi M, Kohno M, Asagiri K, Ikeda T, Okada T, Kanada S, Kawashima S, Goto Y, Takano S, Yasufuku M, Wada M. Twenty-year trends in neonatal surgery based on a nationwide Japanese surveillance program. Pediatr Surg Int 2015; 31:955-62. [PMID: 26319695 DOI: 10.1007/s00383-015-3775-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/06/2015] [Indexed: 10/23/2022]
Abstract
AIM To discuss the chronological changes observed in a national survey of neonatal surgery in Japan performed every 5 years by the Committee in the Japanese Society of Pediatric Surgeons. METHODS We analyzed the data obtained for 20 years from 1993 to 2013 and herein report the chronological changes. RESULTS The number of summarized cases was least in 1993, with 2806 cases, and subsequently increased to 3753 cases in 2013. The mortality rate among the patients with maternal transport linearly decreased (p = 0.0386). Although the proportion of extremely low birth weight infants linearly increased (p = 0.0014), with an annual rate of +0.39 %, the mortality rate linearly decreased (p = 0.0010), with an annual rate of -1.68 %. Moreover, the overall mortality rate linearly decreased (p = 0.0002), with an annual rate of -0.26 %. Most diseases were observed to exhibit a decline in the mortality rate with the same trend as overall mortality. The decline in the mortality rate was most robust with respect to congenital diaphragmatic hernia (CDH). The mortality rates, except for that of CDH, omphalocele, esophageal atresia, and intestinal perforation, declined to 5 % or lower by 2013. CONCLUSIONS The present findings may be the result of remarkable progress in perinatal management.
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Akiba Y, Ono M, Shirahashi M, Noda S, Nishijima S, Amagata T, Kusano R, Fuke T, Hayashida S, Ikeda T, Yakubo K, Fukuiya T. Polyhydramnios associated with Prader-Willi syndrome. J OBSTET GYNAECOL 2015; 35:752-3. [PMID: 26291428 DOI: 10.3109/01443615.2015.1005586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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115
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Akiba Y, Ono M, Shirahashi M, Noda S, Nishijima S, Amagata T, Kusano R, Fuke T, Hayashida S, Ikeda T, Yakubo K, Fukuiya T. Polyhydramnios associated with Prader-Willi syndrome. J OBSTET GYNAECOL 2015:1-2. [PMID: 26271012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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116
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Sakai E, Kohno T, Fujimori S, Ikeda T, Harano T, Suzuki S, Iida T. F-061CLINICAL EVALUATION OF THOPAZ PORTABLE DIGITALIZED SUCTION SYSTEMS IN THORACIC SURGERY. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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117
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Nakagami G, Minematsu T, Morohoshi T, Yamane T, Kanazawa T, Huang L, Asada M, Nagase T, Ikeda SI, Ikeda T, Sanada H. Pseudomonas aeruginosa quorum-sensing signaling molecule N-3-oxododecanoyl homoserine lactone induces matrix metalloproteinase 9 expression via the AP1 pathway in rat fibroblasts. Biosci Biotechnol Biochem 2015; 79:1719-24. [PMID: 26096293 DOI: 10.1080/09168451.2015.1056509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Quorum sensing is a cell-to-cell communication mechanism, which is responsible for regulating a number of bacterial virulence factors and biofilm maturation and therefore plays an important role for establishing wound infection. Quorum-sensing signals may induce inflammation and predispose wounds to infection by Pseudomonas aeruginosa; however, the interaction has not been well investigated. We examined the effects of the P. aeruginosa las quorum-sensing signal, N-3-oxo-dodecanoyl homoserine lactone (3OC12-HSL), on matrix metalloproteinase (MMP) 9 expression in Rat-1 fibroblasts. 3OC12-HSL upregulated the expression of the MMP9 gene bearing an activator protein-1 (AP-1) binding site in the promoter region. We further investigated the mechanism underlying this effect. c-Fos gene expression increased rapidly after exposure to 3OC12-HSL, and nuclear translocation of c-Fos protein was observed; both effects were reduced by pretreatment with an AP-1 inhibitor. These results suggest that 3OC12-HSL can alter MMP9 gene expression in fibroblasts via the AP-1 signaling pathway.
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Bito T, Nishikawa R, Hatakeyama M, Kikusawa A, Kanki H, Nagai H, Sarayama Y, Ikeda T, Yoshizaki H, Seto H, Adachi A, Horikawa T, Oka M, Nishigori C. Influence of neutralizing antibodies to adalimumab and infliximab on the treatment of psoriasis. Br J Dermatol 2015; 170:922-9. [PMID: 24329764 DOI: 10.1111/bjd.12791] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Current treatment with biologics has produced dramatic therapeutic effects in patients with psoriasis, although these agents occasionally decrease in efficacy. One of the main factors responsible for this attenuation is attributed to the development of antidrug antibodies (ADAs). OBJECTIVES To analyse the relationship between serum drug concentrations, the presence of ADAs and treatment efficacy of adalimumab and infliximab, and to determine the optimal use of these biologics. METHODS This was a 1-year prospective study in the dermatology departments of Kobe University Hospital and collaborating hospitals. All patients starting a regimen of adalimumab and infliximab for psoriasis were included. We measured the serum concentration of the drugs and titres of antibodies to adalimumab and infliximab, as well as the Psoriasis Area and Severity Index scores at weeks 0, 4, 12, 24 and 48 during the first year of treatment. RESULTS We observed a 50% positive rate of ADAs to adalimumab, and a 41% positive rate of ADAs to infliximab. The titres of ADAs showed a wide range from low to high titres. In the high-titre groups, the patients exhibited a decreased clinical response, and demonstrated a negative correlation between titre and clinical response. However, an equivalent therapeutic effect was observed between the low-titre group and the group with no antibodies detected for adalimumab. For infliximab, the patients with ADAs showed decreased clinical response. An apparent negative correlation between antibody production and reduced clinical response was observed. CONCLUSIONS Two biologics, adalimumab and infliximab, showed different therapeutic behaviour. The measurement of ADAs and drug concentrations has important implications for treatment with biologics.
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Ikeda T, Moriwaki H, Sakumi A. PO-1100 Quality assurance of volumetric modulated arc therapy for a prostate cancer patient with a hip prosthesis. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41092-8] [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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120
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Yoshizumi T, Itoh S, Imai D, Ikegami T, Ninomiya M, Iguchi T, Harimoto N, Takeishi K, Kimura Y, Uchiyama H, Soejima Y, Ikeda T, Kawanaka H, Shirabe K, Maehara Y. Impact of Platelets and Serotonin on Liver Regeneration After Living Donor Hepatectomy. Transplant Proc 2015; 47:683-5. [DOI: 10.1016/j.transproceed.2014.11.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 10/29/2014] [Accepted: 11/18/2014] [Indexed: 12/13/2022]
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Chino K, Saito Y, Matsumoto S, Ikeda T, Yanagawa Y. Investigation of exercise intensity during a freestyle wrestling match. J Sports Med Phys Fitness 2015; 55:290-296. [PMID: 25422866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM This study investigated changes in exercise intensity during a freestyle wrestling match. METHODS Wrestling matches that consisted of three periods of 2 min were performed by nine elite collegiate male wrestlers. Exercise intensity was measured using heart rate (HR), blood lactate concentration ([BLa-]), and rating of perceived exertion (RPE). HR was continuously recorded during the match, and mean HR during each period was obtained. [BLa-] and RPE according to the 6-20-point Borg Perceived Exertion Scale were measured immediately after each period. RESULTS HR during the wrestling match increased as a whole, but a continuous decrease in HR was observed during the first half of the second and third periods. This was likely caused by a cautious strategy involving reduced aggressive actions. HR significantly increased (P<0.05) from the first period (81 ± 6% of maximal HR [HRmax]) to the second period (88 ± 5% of HR(max)), and from the second to the third periods (92 ± 5% of HR(max)). [BLa-] significantly increased (P<0.05) from the first period (7.6 ± 2.0 mmol.L⁻¹) to the second period (10.4 ± 4.2 mmol.L⁻¹), but not from the second to the third periods (11.5 ± 3.1 mmol.L⁻¹). RPE significantly increased across the three periods (first, 13 ± 1; second, 15 ± 2; and third periods, 17 ± 2, P<0.05). CONCLUSION Our results on changes in exercise intensity during each period and between periods would be helpful for making strategic decisions during wrestling matches and for planning daily training.
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Matsushita Y, Yanamoto S, Takahashi H, Yamada S, Naruse T, Sakamoto Y, Ikeda H, Shiraishi T, Fujita S, Ikeda T, Asahina I, Umeda M. A clinicopathological study of perineural invasion and vascular invasion in oral tongue squamous cell carcinoma. Int J Oral Maxillofac Surg 2015; 44:543-8. [PMID: 25697063 DOI: 10.1016/j.ijom.2015.01.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 01/13/2015] [Accepted: 01/21/2015] [Indexed: 11/19/2022]
Abstract
The risk factors for recurrence of head and neck cancer are classified as being of high or intermediate risk. Those of intermediate risk include multiple positive nodes without extracapsular nodal spread, perineural/vascular invasion, pT3/T4 primary tumours, and positive level IV/V nodes. However, little evidence is available to validate these intermediate risk factors. We analyzed perineural/vascular invasion in 89 patients who underwent radical surgery for oral tongue squamous cell carcinoma, whose records were reviewed retrospectively. Perineural invasion was found in 27.0% of cases and vascular invasion in 23.6%; both had a strong relationship with histopathological nodal status (P = 0.005). The 5-year disease-specific survival (DSS) and overall survival rates of patients with perineural invasion were significantly lower than those of patients without perineural invasion (P < 0.001 and P = 0.002, respectively). The 5-year DSS of UICC stage I and II cases with perineural/vascular invasion was significantly lower than those without (P < 0.001 and P = 0.008, respectively). Perineural invasion and vascular invasion are risk factors for regional metastasis and a poor prognosis. We recommend elective neck dissection when perineural/vascular invasion is found in clinical stage I and II cases. The accumulation of further evidence to consider intermediate risks is required.
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Tajima S, Bito T, Ikeda T, Mukohara T, Nishigori C. Cutaneous endometrial cancer arising from heterotopic endometriosis in an abdominal caesarean section scar. J Eur Acad Dermatol Venereol 2015; 30:683-5. [PMID: 25622645 DOI: 10.1111/jdv.12964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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124
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Toshima T, Ikegami T, Kimura K, Harimoto N, Yamashita Y, Yoshizumi T, Soejima Y, Ikeda T, Shirabe K, Maehara Y. Application of postoperative Model for End-Stage Liver Disease scoring system for evaluating liver graft function after living donor liver transplantation. Transplant Proc 2015; 46:81-6. [PMID: 24507030 DOI: 10.1016/j.transproceed.2013.09.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 08/10/2013] [Accepted: 09/12/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND The Model for End-Stage Liver Disease (MELD) score has been validated to predict the mortality rate of patients with various chronic liver diseases on the waiting list for liver transplantation (LT). The aim of this study was to assess the value of the postoperative MELD scoring system as an early postoperative predictor of outcome in patients undergoing living donor LT (LDLT). METHODS A retrospective analysis of 217 adult-to-adult LDLT patients was performed. The values of the MELD score on various postoperative days (PODs) as predictors of graft loss within 6 months after LDLT were examined by calculating the areas under the receiver operating characteristic (AUROC) curves. The 6-months graft survival rates were compared between patients with (n = 22) and without (n = 195) graft loss. Univariate and multivariate analyses were performed to identify the factors associated with mortality. RESULTS The MELD score on POD2 was a predictor of graft loss, with an AUROC c-statistic of 0.779, a specificity of 79.5%, and a sensitivity of 68.2% at optimal cutoff, whereas the preoperative MELD score c-statistic was 0.605 with 44.6% sensitivity. Multivariate analyses for postoperative mortality revealed MELD-POD2 ≥19 (odds ratio, 5.601; 95% confidence interval [CI], 1.395-4.508; P = .0009) as an independent predictor of short-term graft loss following LDLT, in addition to preoperative hospitalization status. Later MELD POD scores were also predictive of graft loss. CONCLUSIONS The early postoperative MELD scoring system is feasible as an index for prediction of postoperative mortality following LDLT.
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Tanaka H, Ikeda T, Ono S, Suda S, Ueno T. White blood cell counts have an impact on septic patient outcome followed by polymyxin-b immobilized fiber with direct hemoperfusion. Crit Care 2015. [PMCID: PMC4471142 DOI: 10.1186/cc14208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Ichigo S, Takagi H, Matsunami K, Murase T, Ikeda T, Imai A. A large ovarian leiomyoma discovered incidentally in a 76-year-old woman: case report. EUR J GYNAECOL ONCOL 2015; 36:203-205. [PMID: 26050361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Ovarian leiomyoma is very rare type of ovarian tumor. This benign tumor is seen in the pediatric age group to premenopausal women. CASE A 76-year-old woman had a huge leiomyoma (19 x 11 x 10 cm) of the right ovary. The preoperative diagnosis was difficult to distinguish from a broad ligament leiomyoma or ovarian cancer. CONCLUSIONS Although theses tumors are benign, its extreme rarity led us to report an additional and rather unusual case of ovarian leiomyoma, and to focus some attention on this type of tumor.
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Ikeda T, Nagao I, Moriyama S, Kim JD. Synthesis and characterization of glycidyl-polymer-based poly(ionic liquid)s: highly designable polyelectrolytes with a poly(ethylene glycol) main chain. RSC Adv 2015. [DOI: 10.1039/c5ra17609c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glycidyl-polymer-based poly(ionic liquid)s with different spacers and ionic moieties were synthesized by click functionalization of a glycidyl azide polymer.
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Ono S, Ikeda T, Kubo T, Tsujimoto H, Kinoshita M, Ueno T. Perioperative programmed death-1 expression on CD4+ T cells predicts the incidence of postoperative infectious complications following gastrointestinal surgery. Crit Care 2015. [PMCID: PMC4471240 DOI: 10.1186/cc14111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Ikeda T, Ono S, Ueno T, Tanaka H, Suda S. Changes in procalcitonin and presepsin before and after immunoglobulin administration in septic patients. Crit Care 2015. [PMCID: PMC4470494 DOI: 10.1186/cc14142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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130
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Morohoshi T, Tominaga Y, Someya N, Ikeda T. Characterization of a novel thermostable N-acylhomoserine lactonase from the thermophilic bacterium Thermaerobacter marianensis. J Biosci Bioeng 2014; 120:1-5. [PMID: 25529553 DOI: 10.1016/j.jbiosc.2014.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 11/17/2014] [Accepted: 11/18/2014] [Indexed: 11/29/2022]
Abstract
Thermaerobacter marianensis is an extremely thermophilic bacterium, which was isolated from the Mariana Trench, with an optimal growth temperature of approximately 75 °C. N-Acylhomoserine lactone (AHL) is a quorum-sensing signal molecule used by many gram-negative bacteria. Here, we report the identification of an AHL-degrading gene homolog (designated aiiT) in the genome of T. marianensis JCM 10246. AiiT has 59.7%, 21.2%, and 11.2% identity to AhlS from Solibacillus silvestris, AiiA from Bacillus cereus, and AidC from Chryseobacterium sp., respectively. Homologs of aiiT were also found in Thermaerobacter nagasakiensis, T. composti, and T. subterraneus. A purified AiiT-maltose binding fusion showed high AHL-degrading activity against N-hexanoyl-L-homoserine lactone, N-octanoyl-L-homoserine lactone, and N-decanoyl-L-homoserine lactone at temperatures ranging from 40 to 80 °C. HPLC analysis revealed that AiiT functions as an AHL-lactonase that catalyzes AHL ring opening by hydrolyzing lactones. AiiT displayed maximal activity at high temperatures (60-80 °C) and showed higher thermostability than other AHL lactonases.
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131
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Kato T, Morohoshi T, Someya N, Ikeda T. The ppuI-rsaL-ppuR quorum-sensing system regulates cellular motility, pectate lyase activity, and virulence in potato opportunistic pathogen Pseudomonas sp. StFLB209. Biosci Biotechnol Biochem 2014; 79:673-80. [PMID: 25485871 DOI: 10.1080/09168451.2014.988679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Pseudomonas sp. StFLB209 was isolated from potato leaf as an N-acylhomoserine lactone (AHL)-producing bacterium and showed a close phylogenetic relationship with P. cichorii, a known plant pathogen. Although there are no reports of potato disease caused by pseudomonads in Japan, StFLB209 was pathogenic to potato leaf. In this study, we reveal the complete genome sequence of StFLB209, and show that the strain possesses a ppuI-rsaL-ppuR quorum-sensing system, the sequence of which shares a high similarity with that of Pseudomonas putida. Disruption of ppuI results in a loss of AHL production as well as remarkable reduction in motility. StFLB209 possesses strong pectate lyase activity and causes maceration on potato tuber and leaf, which was slightly reduced in the ppuI mutant. These results suggest that the quorum-sensing system is well conserved between StFLB209 and P. putida and that the system is essential for motility, full pectate lyase activity, and virulence in StFLB209.
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132
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Xu FF, Morohoshi T, Wang WZ, Yamaguchi Y, Liang Y, Ikeda T. Evaluation of intraspecies interactions in biofilm formation by Methylobacterium species isolated from pink-pigmented household biofilms. Microbes Environ 2014; 29:388-92. [PMID: 25381715 PMCID: PMC4262362 DOI: 10.1264/jsme2.me14038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Concern regarding household biofilms has grown due to their widespread existence and potential to threaten human health by serving as pathogen reservoirs. Previous studies identified Methylobacterium as one of the dominant genera found in household biofilms. In the present study, we examined the mechanisms underlying biofilm formation by using the bacterial consortium found in household pink slime. A clone library analysis revealed that Methylobacterium was the predominant genus in household pink slime. In addition, 16 out of 21 pink-pigmented bacterial isolates were assigned to the genus Methylobacterium. Although all of the Methylobacterium isolates formed low-level biofilms, the amount of the biofilms formed by Methylobacterium sp. P-1M and P-18S was significantly increased by co-culturing with other Methylobacterium strains that belonged to a specific phylogenetic group. The single-species biofilm was easily washed from the glass surface, whereas the dual-species biofilm strongly adhered after washing. A confocal laser scanning microscopy analysis showed that the dual-species biofilms were significantly thicker and tighter than the single-species biofilms.
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133
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Nakamura S, Shimazawa M, Inoue Y, Takata S, Ito Y, Tsuruma K, Ikeda T, Honda A, Satoh M, Hara H. Role of Metallothioneins 1 and 2 in Ocular Neovascularization. Invest Ophthalmol Vis Sci 2014; 55:6851-6860. [DOI: 10.1167/iovs.14-14545] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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134
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Funahashi H, Naono-Nakayama R, Ebihara K, Koganemaru G, Kuramashi A, Ikeda T, Nishimori T, Ishida Y. Hemokinin-1 mediates pruriceptive processing in the rat spinal cord. Neuroscience 2014; 277:206-16. [DOI: 10.1016/j.neuroscience.2014.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 06/28/2014] [Accepted: 07/01/2014] [Indexed: 11/16/2022]
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135
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Kawasaki G, Naruse T, Kawano T, Rokutanda S, Takahashi H, Matsushita Y, Ikeda T, Umeda M. mTORC1 and mTORC2 expressions in the oral squmous cell carcinoma: an immunohistochemical and clinicopathological study. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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136
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White B, Berg D, Ikeda T, Levy R, Itti L, Munoz D. Comparison of superior colliculus and primary visual cortex in the coding of visual saliency. J Vis 2014. [DOI: 10.1167/14.10.517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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137
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Ono M, Nishijima S, Amagata T, Ikeda T, Yakubo K, Akatsuka S, Fukuiya T. Two consecutive births after ovarian preservation in a Gorlin syndrome patient. J OBSTET GYNAECOL 2014; 35:96-7. [PMID: 25026324 DOI: 10.3109/01443615.2014.937682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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138
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Ochiai D, Ikeda T, Yakubo K, Fukuiya T. A multilocular cystic lesion of the uterine endocervix detected in pregnancy. J OBSTET GYNAECOL 2014; 34:646-8. [PMID: 24921671 DOI: 10.3109/01443615.2014.923819] [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]
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139
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Ikeda T, Matsuyama K, Kobayashi D, Matsushita F. Whole-cell Enzyme Electrodes Based on Mediated Bioelectrocatalysis. Biosci Biotechnol Biochem 2014; 56:1359-60. [PMID: 1368847 DOI: 10.1271/bbb.56.1359] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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140
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Harimoto N, Ikegami T, Nakagawara H, Yamashita YI, Yoshizumi T, Uchiyama H, Soejima Y, Ikeda T, Shirabe K, Aishima S, Oda Y, Maehara Y. Chronic Immune-Mediated Reaction Syndrome as the Cause of Late Graft Mortality in Living-Donor Liver Transplantation for Primary Biliary Cirrhosis. Transplant Proc 2014; 46:1438-43. [DOI: 10.1016/j.transproceed.2014.02.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 02/27/2014] [Indexed: 12/22/2022]
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141
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Ikeda T, Iino R, Noji H. Real-time fluorescence visualization of slow tautomerization of single free-base phthalocyanines under ambient conditions. Chem Commun (Camb) 2014; 50:9443-6. [DOI: 10.1039/c4cc02574a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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142
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Maezawa T, Yamanaka M, Hashimoto S, Amo A, Ohgaki A, Nakaoka Y, Fukuda A, Ikeda T, Inoue M, Morimoto Y. Possible selection of viable human blastocysts after vitrification by monitoring morphological changes. J Assist Reprod Genet 2014; 31:1099-104. [PMID: 24859171 DOI: 10.1007/s10815-014-0260-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/13/2014] [Indexed: 10/25/2022] Open
Abstract
PURPOSE Morphological assessment of human blastocysts has been effective for selecting embryos with high potential. However, they often show repeated shrinkage and expansion toward their hatching. Here we assessed whether capturing morphological changes over time of vitrified-warmed blastocysts could lead to a better selection of viable embryos from shrunken blastocysts. METHODS The implantation rates of vitrified-warmed blastocysts that were shrunken or expanded (developing) at the time of loading for transfer were compared among 2,729 cycles that were subjected to single blastocyst transfer. Vitrified (107) and fresh blastocysts (17) were donated for the experimental study. To assess the relationship between morphology (expanded vs. shrunken) and the mitochondrial respiration of blastocysts, the oxygen consumption rate (OCR) was analyzed for 55 specimens using an uncoupler of oxidative phosphorylation. The remaining 69 blastocysts were used for recording morphological changes every 15 min for 48 h after warming. RESULTS Because there were no surplus embryos, 7 % of the vitrified-warmed blastocysts were shrunken and transferred. The shrunken embryos had sufficient implantation ability (40 %). The OCR of the shrunken embryos was significantly lower than that of their expanded counterparts. Upon exposure to the uncoupler, the OCR of some shrunken embryos increased to levels similar to the expanded specimens. Time-lapse images revealed some shrunken embryos which formed blastocoel by 5 h following warming exhibited developmental competence to the hatched stage. CONCLUSIONS Data of the present study suggest a group of shrunken blastocysts contains many viable and clinically available embryos and time-lapse observation of vitrified-warmed blastocysts is a potential method to distinguish viable embryos from shrunken blastocysts.
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Hirota R, Kuroda A, Ikeda T, Takiguchi N, Ohtake H, Kato J. Transcriptional Analysis of the MulticopyhaoGene Coding for Hydroxylamine Oxidoreductase inNitrosomonassp. Strain ENI-11. Biosci Biotechnol Biochem 2014; 70:1875-81. [PMID: 16926500 DOI: 10.1271/bbb.60049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The nitrifying bacterium Nitrosomonas sp. strain ENI-11 has three copies of the gene encoding hydroxylamine oxidoreductase (hao(1), hao(2), and hao(3)) on its genome. Broad-host-range reporter plasmids containing transcriptional fusion genes between hao copies and lacZ were constructed to analyze the expression of each hydroxylamine oxidoreductase gene (hao) copy individually and quantitatively. beta-Galactosidase assays of ENI-11 harboring reporter plasmids revealed that all hao copies were transcribed in the wild-type strain. Promoter analysis of hao copies revealed that transcription of hao(3) was highest among the hao copies. Expression levels of hao(1) and hao(2) were 40% and 62% of that of hao(3) respectively. Transcription of hao(1) was negatively regulated, whereas a portion of hao(3) transcription was read through transcription from the rpsT promoter. When energy-depleted cells were incubated in the growth medium, only hao(3) expression increased. This result suggests that it is hao(3) that is responsible for recovery from energy-depleted conditions in Nitrosomonas sp. strain ENI-11.
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144
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Doe K, Nozawa K, Hiruma K, Yamada Y, Matsuki Y, Nakano S, Ogasawara M, Nakano H, Ikeda T, Ikegami T, Fujishiro M, Kawasaki M, Ikeda K, Amano H, Morimoto S, Ogawa H, Takamori K, Sekigawa I, Takasaki Y. Antibody against chromatin assembly factor-1 is a novel autoantibody specifically recognized in systemic lupus erythematosus. Lupus 2014; 23:1031-41. [PMID: 24836587 DOI: 10.1177/0961203314536245] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Autoantibodies to proliferating cell nuclear antigen (PCNA) are specifically, if rarely, present in systemic lupus erythematosus (SLE) patient sera. Even SLE patients lacking PCNA reactivity often show reaction to PCNA-binding protein. Here, immunoreactivity to chromatin assembly factor-1 (CAF-1), an essential molecule for DNA replication and a PCNA-binding protein, was compared for the sera of SLE patients, normal healthy controls (NHCs) and other disease controls, and in autoimmune sera reactive to standard autoantigens, by enzyme-linked immunosorbent assay (ELISA), indirect immunofluorescence, and immunoblotting. CAF1 and IRF1 expression in SLE and NHC peripheral mononuclear cells were compared by quantitative real-time polymerase chain reaction. Serum interferon-γ-inducing protein-10 and anti-double-stranded (ds)DNA antibody levels were measured by ELISA. Increased CAF-1 autoimmune reactivity was recognized in SLE or serum anti-dsDNA antibody-positive patients. Significantly greater central nervous system (CNS) involvement (aseptic meningitis) and serum anti-dsDNA antibody titers were present more often in anti-CAF-1 antibody-positive than antibody-negative SLE patients. IFN-γ positively regulated CAF-1 expression in vitro and was associated with anti-CAF-1 antibody production in SLE. Thus, a novel anti-CAF-1 autoantibody is frequently found in patients with SLE and is a useful biomarker for diagnosis, especially in cases with CNS involvement. Aberrant IFN-γ regulation appears to play an important role in anti-CAF-1 antibody production in SLE.
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145
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Naono-Nakayama R, Ikeda T, Matsushima O, Sameshima H, Takamiya K, Funahashi H, Nishimori T. An amino-terminal fragment of hemokinin-1 has an inhibitory effect on pruritic processing in rats. Neuroscience 2014; 259:172-83. [DOI: 10.1016/j.neuroscience.2013.10.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/11/2013] [Accepted: 10/28/2013] [Indexed: 12/01/2022]
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146
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Uchiyama H, Shirabe K, Nakagawara H, Ikegami T, Toshima T, Soejima Y, Yoshizumi T, Yamashita YI, Harimoto N, Ikeda T, Maehara Y. Revisiting the safety of living liver donors by reassessing 441 donor hepatectomies: is a larger hepatectomy complication-prone? Am J Transplant 2014; 14:367-74. [PMID: 24472194 DOI: 10.1111/ajt.12559] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 01/25/2023]
Abstract
Donor safety is of paramount importance in performing living donor liver transplantation (LDLT). We retrospectively reviewed donor medical records to confirm whether larger donor hepatectomy is absolutely complication-prone. A total of 441 living donor hepatectomies were performed between October 1996 and July 2012 in our institute, which were divided into three eras (Era I, October 1996 to March 2004; Era II, April 2004 to March 2008; Era III, April 2008 to July 2012) and the incidences of postoperative complications were compared among the three types of hepatectomy-right hepatectomy (RH), left hepatectomy (LH) and left lateral segmentectomy (LLS). Although severe complications (Clavien's grade 3 or more) frequently occurred in RH in Eras I and II (15.4% and 10.7%, respectively), the incidence in Era III decreased to the comparable level observed in LH and LLS (5.4% in RH, 2.3% in LH and 5.3% in LLS). The incidence of postoperative complications did not relate to the type of hepatectomy selected in the latest era. Since most complications after hepatectomy were considered preventable, step-by-step meticulous surgical procedures are a prerequisite for further assuring donor safety irrespective of the type of hepatectomy selected.
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147
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Mäckel V, Meissl W, Ikeda T, Clever M, Meissl E, Kobayashi T, Kojima TM, Imamoto N, Ogiwara K, Yamazaki Y. A novel facility for 3D micro-irradiation of living cells in a controlled environment by MeV ions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:014302. [PMID: 24517788 DOI: 10.1063/1.4859499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a novel facility for micro-irradiation of living targets with ions from a 1.7 MV tandem accelerator. We show results using 1 MeV protons and 2 MeV He(2+). In contrast to common micro-irradiation facilities, which use electromagnetic or electrostatic focusing and specially designed vacuum windows, we employ a tapered glass capillary with a thin end window, made from polystyrene with a thickness of 1-2 μm, for ion focusing and extraction. The capillary is connected to a beamline tilted vertically by 45°, which allows for easy immersion of the extracted ions into liquid environment within a standard cell culture dish. An inverted microscope is used for simultaneously observing the samples as well as the capillary tip, while a stage-top incubator provides an appropriate environment for the samples. Furthermore, our setup allows to target volumes in cells within a μm(3) resolution, while monitoring the target in real time during and after irradiation.
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148
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Noguchi M, Ikeda T, Ikeda K, Suda S, Kodaira A, Ueno T, Ohmi A. Usefulness of the endotoxin activity assay as a biomarker to assess severity in ICU patients. Crit Care 2014. [PMCID: PMC4068168 DOI: 10.1186/cc13402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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149
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Fujii T, Kuwahara S, Katayama K, Takado K, Ube T, Ikeda T. Molecular dynamics in azobenzene liquid crystal polymer films measured by time-resolved techniques. Phys Chem Chem Phys 2014; 16:10485-90. [DOI: 10.1039/c4cp00457d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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150
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Fukusumi T, Takei N, Tateno Y, Aoki T, Ando A, Kozakai K, Shima H, Mizoguchi T, Ito S, Ikeda T, Tamiaki H, Oba T. Ene-thiol reaction of C3-vinylated chlorophyll derivatives in the presence of oxygen: synthesis of C3-formyl-chlorins under mild conditions. J PORPHYR PHTHALOCYA 2013. [DOI: 10.1142/s1088424613500983] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Reactions of thiol with the C 3-vinyl group of various chlorophyll (Chl) derivatives were examined. The reactions resemble thiol-olefin co-oxidation, except that the vinyl C = C double bond was cleaved to afford a formyl group without any transition metal catalyst, and that the simple anti-Markovnikov adduct of thiol to olefin was obtained as a minor product. Peripheral substituents of Chl derivatives little affected the reaction, while the central metal atom of the chlorin macrocycle influenced the composition of the products. Oxygen and acid dissolved in the reaction mixture can facilitate the oxidation. Sufficiently mild conditions in this regioselective oxidation at the C 31-position are significant in bioorganic chemistry.
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