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Matsunuma R, Asai N, Ohkuni Y, Nakashima K, Iwasaki T, Misawa M, Norihiro K. I-ROAD could be efficient in predicting severity of community-acquired pneumonia or healthcare-associated pneumonia. Singapore Med J 2015; 55:318-24. [PMID: 25017407 DOI: 10.11622/smedj.2014082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
INTRODUCTION The ability to predict the prognosis of patients with pneumonia is critical, especially when making decisions regarding treatment regimens and sites of care. However, prognostic guidelines for healthcare-associated pneumonia (HCAP) have yet to be established. I-ROAD is the prognostic guideline of the Japanese Respiratory Society for hospital-acquired pneumonia (HAP). This study compared available prognostic guidelines to determine the usefulness of I-ROAD as a prognostic tool for patients with HCAP. METHODS We conducted a retrospective review of all patients with pneumonia admitted to Kameda Medical Center, Japan, from January 2006 to September 2009. Patients were categorised into two groups, namely those with community acquired pneumonia (CAP) and those with HCAP. We compared the baseline characteristics, laboratory findings, identified pathogens, antibiotic regimens, clinical outcomes, pneumonic severity and prognostic accuracy of each guideline between the two patient groups. The severity of each disease was assessed on admission using the A-DROP, CURB-65, PSI and I-ROAD guidelines. RESULTS Of the 302 patients evaluated, 228 (75.5%) were diagnosed with CAP and 74 (24.5%) with HCAP. Patients with HCAP were older and had a higher performance status than patients with CAP. The mortality rate in the CAP group tended to rise with increasing severity scores of prognostic guidelines. Although the severity scores of all prognostic guidelines could predict 30-day mortality in patients with CAP, I-ROAD exhibited a higher discriminatory power for patients with HCAP based on analysis of receiver-operating characteristic curves. CONCLUSION I-ROAD could be more accurate than other prognostic guidelines for evaluating the severity of HCAP.
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Sakamaki A, Katsuragi Y, Otsuka K, Tomita M, Obata M, Iwasaki T, Abe M, Sato T, Ochiai M, Sakuraba Y, Aoyagi Y, Gondo Y, Sakimura K, Nakagama H, Mishima Y, Kominami R. Bcl11b SWI/SNF-complex subunit modulates intestinal adenoma and regeneration after γ-irradiation through Wnt/β-catenin pathway. Carcinogenesis 2015; 36:622-31. [PMID: 25827435 DOI: 10.1093/carcin/bgv044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 03/28/2015] [Indexed: 01/23/2023] Open
Abstract
SWI/SNF chromatin remodeling complexes constitute a highly related family of multi-subunit complexes to modulate transcription, and SWI/SNF subunit genes are collectively mutated in 20% of all human cancers. Bcl11b is a SWI/SNF subunit and acts as a haploinsufficient tumor suppressor in leukemia/lymphomas. Here, we show expression of Bcl11b in intestinal crypt cells and promotion of intestinal tumorigenesis by Bcl11b attenuation in Apc (min/+) mice. Of importance, mutations or allelic loss of BCL11B was detected in one-third of human colon cancers. We also show that attenuated Bcl11b activity in the crypt base columnar (CBC) cells expressing the Lgr5 stem cell marker enhanced regeneration of intestinal epithelial cells after the radiation-induced injury. Interestingly, BCL11B introduction in human cell lines downregulated transcription of β-catenin target genes, whereas Bcl11b attenuation in Lgr5(+) CBCs increased expression of β-catenin targets including c-Myc and cyclin D1. Together, our results argue that Bcl11b impairment promotes tumor development in mouse and human intestine at least in part through deregulation of β-catenin pathway.
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Iwasaki T, Nabi M, Shimizu Y, Kimura I. Computational modeling of 137Cs contaminant transfer associated with sediment transport in Abukuma River. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2015; 139:416-426. [PMID: 24909793 DOI: 10.1016/j.jenvrad.2014.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 05/08/2014] [Accepted: 05/18/2014] [Indexed: 06/03/2023]
Abstract
A numerical model capable of simulating the transfer of (137)Cs in rivers associated with transport of fine sediment is presented. The accident at Fukushima Dai-ichi Nuclear Power Plant (FDNPP) released radionuclides into the atmosphere, and after fallout several radionuclides in them, such as radiocesium ((134)Cs, (137)Cs) and radioiodine ((131)I) were adsorbed on surface soil particles around FDNPP and transported by surface water. To understand the transport and deposition of the radioactive contaminant along with surface soil particles and its flux to the ocean, we modeled the transport of the (137)Cs contaminant by computing the water flow and the associated washload and suspended load transport. We have developed a two-dimensional model to simulate the plane flow structure, sediment transport and associated (137)Cs contaminant transport in rivers by combining a shallow water flow model and an advection-diffusion equation for the transport of sediment. The proposed model has been applied to the lower reach of Abukuma River, which is the main river in the highly contaminated area around FDNPP. The numerical results indicate that most (137)Cs supplied from the upstream river reach with washload would directly reach to Pacific Ocean. In contrast, washload-oriented (137)Cs supplied from the upstream river basin has a limited role in the radioactive contamination in the river. The results also suggest that the proposed framework of computational model can be a potential tool for understanding the sediment-oriented (137)Cs behavior in rivers.
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Kohta M, Iwasaki T. The effect of concentration of tackifying agent on adhesive and skin-protective properties of ceramide 2-containing hydrocolloid dressings. J Wound Care 2014; 24:41-8. [PMID: 25543822 DOI: 10.12968/jowc.2015.24.1.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE In the treatment of pressure ulcers and leg ulcers it is necessary to achieve an effective balance between adhesive and skin-protective properties. We speculated that addition of a tackifying agent (TA) to ceramide 2-containing hydrocolloid dressings would increase their adhesiveness under dry conditions and reduce their adhesiveness under wet conditions because dry tack converts to wet tack after water absorption. METHOD We prepared ceramide 2-containing hydrocolloid dressings with varying amounts of TA. Basic characteristics of the test ceraminde dressings, such as initial tack force and peeling force, were evaluated using standard methods. Peeling force and stratum corneum (SC) removal on healthy human skin were also evaluated at 20 minutes, 7 hours, and 72 hours. In addition, the effect of 10 repeated applications on transepidermal water loss (TEWL) was investigated on the skin of hairless mice under dry and wet conditions. Statistical analyses were performed using one-way analysis of variance followed by Dunnett's multiple comparison test. A p-value of <0.05 was considered statistically significant. RESULTS On a stainless steel substrate, initial tack force and 180° peeling force increased as TA content increased. Twenty minutes after application on human skin, peeling force and SC removal increased with increasing TA content. When TA contents were over 10%, significant differences in peeling force and SC removal were obtained compared with ceramide 2-containing hydrocolloid dressings without TA (p<0.05). However, a TA content-dependent increase in peeling force was not evident 7 hours and 72 hours after application. Under dry conditions, TEWL increased with repeated application and peeling. Conversely, no significant increases in TEWL were evident under wet conditions after 10 repeated applications and peelings. CONCLUSION Our data demonstrate that the initial attachment of ceramide 2-containing hydrocolloid dressings to the skin increases with addition of TA. Skin damage can be avoided by conversion of the adhesive system to wet tack with water absorption. DECLARATION OF INTEREST Masushi Kohta and Tetsuji IwasakI are employees of ALCARE Co., Ltd., Japan. This project was supported by an unrestricted grant from ALCARE.
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Kumari A, Iwasaki T, Pyndiah S, Cassimere EK, Palani CD, Sakamuro D. Regulation of E2F1-induced apoptosis by poly(ADP-ribosyl)ation. Cell Death Differ 2014; 22:311-22. [PMID: 25257171 DOI: 10.1038/cdd.2014.146] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/16/2014] [Accepted: 08/18/2014] [Indexed: 11/09/2022] Open
Abstract
The transcription factor adenovirus E2 promoter-binding factor (E2F)-1 normally enhances cell-cycle progression, but it also induces apoptosis under certain conditions, including DNA damage and serum deprivation. Although DNA damage facilitates the phosphorylation and stabilization of E2F1 to trigger apoptosis, how serum starvation renders cells vulnerable to E2F1-induced apoptosis remains unclear. Because poly(ADP-ribose) polymerase 1 (PARP1), a nuclear enzyme essential for genomic stability and chromatin remodeling, interacts directly with E2F1, we investigated the effects of PARP1 on E2F1-mediated functions in the presence and absence of serum. PARP1 attenuation, which increased E2F1 transactivation, induced G2/M cell-cycle arrest under normal growth conditions, but enhanced E2F1-induced apoptosis in serum-starved cells. Interestingly, basal PARP1 activity was sufficient to modify E2F1 by poly(ADP-ribosyl)ation, which stabilized the interaction between E2F1 and the BIN1 tumor suppressor in the nucleus. Accordingly, BIN1 acted as an RB1-independent E2F1 corepressor. Because E2F1 directly activates the BIN1 gene promoter, BIN1 curbed E2F1 activity through a negative-feedback mechanism. Conversely, when the BIN1-E2F1 interaction was abolished by PARP1 suppression, E2F1 continuously increased BIN1 levels. This is functionally germane, as PARP1-depletion-associated G2/M arrest was reversed by the transfection of BIN1 siRNA. Moreover, PARP-inhibitor-associated anti-transformation activity was compromised by the coexpression of dominant-negative BIN1. Because serum starvation massively reduced the E2F1 poly(ADP-ribosyl)ation, we conclude that the release of BIN1 from hypo-poly(ADP-ribosyl)ated E2F1 is a mechanism by which serum starvation promotes E2F1-induced apoptosis.
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Kodama H, Otani K, Iwasaki T, Takenaka S, Horitani Y, Togase H. Metabolomic investigation of pathogenesis of myxosporean emaciation disease of tiger puffer fish Takifugu rubripes. JOURNAL OF FISH DISEASES 2014; 37:619-627. [PMID: 23952965 DOI: 10.1111/jfd.12154] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 06/15/2013] [Accepted: 06/17/2013] [Indexed: 06/02/2023]
Abstract
Serum biochemical analysis was undertaken to study the pathophysiological details of emaciation disease of the tiger puffer fish Takifugu rubripes (Temminck and Schlegel). Serum parameters were measured by biochemical analysis using automated dry chemistry and gas chromatography/mass spectrometry (GC/MS). Serum concentrations of albumin, amylase, calcium, creatinine, glucose and total protein were significantly lower in the emaciated fish when compared with those of normal fish. Regression analyses found close correlation between concentrations of total protein, albumin, amylase, glucose and progress of the disease. In contrast, serum alanine aminotransferase increased significantly in emaciated fish indicating liver function disorder. Further, GC/MS metabolic profiling of the puffer serum showed that the profile of the emaciated fish was distinct to that of non-infected control. The serum content of amino acids including glycine, 5-oxo-proline and proline, and ascorbic acid, fumaric acid and glycerol increased significantly in serum in moderately emaciated fish. The serum glucose, linolenic acid and tyrosine level decreased significantly in the late phase of the disease. Our results clearly show that prolonged intestinal damage caused by myxosporean infection impairs absorption of nutrients, resulting in extreme emaciation.
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Yamagata H, Nomura T, Arai S, Tanaka K, Iwasaki T. Nucleotide Sequence of a cDNA That Encodes a Rice Prolamin. Biosci Biotechnol Biochem 2014; 56:537. [PMID: 1368338 DOI: 10.1271/bbb.56.537] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Iwasaki T, Sekiguchi M, Tsunemi S, Shibasaki S, Kitano S, Sano H. AB0151 Differential Regulation of C-Met Signal to Synovial Cell Functions in Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hashimoto N, Yamaoka T, Kitano M, Iwasaki T, Sano H, Hashimoto T. FRI0486 Analysis of Wrist Joints in Patients with Systemic Sclerosis Using Magnetic Resonance Imaging. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Sekiguchi M, Iwasaki T, Shibasaki S, Nygren PÅ, Gräslund T, Sano H. AB0134 Affibody Molecules Inhibiting the Interaction between RAS and RAF Suppress the Proliferation and the Production of Inflammatory Mediators by Synovial Cells. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Azuma N, Katada Y, Kitano S, Sekiguchi M, Kitano M, Nishioka A, Hashimoto N, Matsui K, Iwasaki T, Sano H. FRI0435 Salivary Epidermal Growth Factor (EGF) in SjÖGren's Syndrome: Association between Salivary EGF Levels and the Severity of Intraoral Manifestations. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kuramitsu K, Fukumoto T, Iwasaki T, Tominaga M, Matsumoto I, Ajiki T, Ku Y. Long-term Complications After Liver Transplantation. Transplant Proc 2014; 46:797-803. [DOI: 10.1016/j.transproceed.2013.11.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 11/05/2013] [Indexed: 12/11/2022]
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Shimokawa N, Yousefi B, Morioka S, Yamaguchi S, Ohsawa A, Hayashi H, Azuma A, Mizuno H, Kasagi M, Masuda H, Jingu H, Furudate SI, Haijima A, Takatsuru Y, Iwasaki T, Umezu M, Koibuchi N. Altered cerebellum development and dopamine distribution in a rat genetic model with congenital hypothyroidism. J Neuroendocrinol 2014; 26:164-75. [PMID: 24460919 DOI: 10.1111/jne.12135] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 12/30/2013] [Accepted: 01/20/2014] [Indexed: 12/14/2022]
Abstract
Thyroid hormones play crucial roles in the development and functional maintenance of the central nervous system. Despite extensive studies of the neural function of thyroid hormones, little is known about the effects of hypothyroidism on behavioural traits and the mechanisms underlying such effects. In the present study, we report an investigation of congenitally hypothyroid mutant rdw rats, revealing a novel function of thyroid hormones in the central nervous system. The rdw rats were subjected to behavioural analyses such as the rotarod test, open field test and circadian activity measurement. To determine the cause of behavioural disorders, cerebellar morphogenesis was examined by immunohistochemical analysis, and the axonal transport of dopamine in the nigrostriatal pathway was analysed by high-performance liquid chromatography and western blotting. The effects of thyroxine administration to the rdw rats were examined by behavioural analysis. The rdw rats showed severe impairment of motor coordination and balance. This could be explained by the fact that the rats showed severe retardation of cerebellar morphogenesis, which correlates with the small somata and poor dendritic arborisation of Purkinje cells and retarded migration of granule cells particularly during the first two postnatal weeks. Moreover, the rdw rats showed hypoactivity, characterised by decreased circadian locomotor activity. After weaning, thyroxine administration improved the dwarfism in rdw rats but had no effect on cerebellar function. In addition, the rdw rats showed anxiety and depression intrinsically to novel surroundings. Interestingly, the rdw rats showed high levels of dopamine in the substantia nigra and low levels in the striatum, an important centre for the coordination of behaviour. Furthermore, low levels of tubulin in the striatum were detected, indicating the aberrant axonal transport of dopamine in the nigrostriatal pathway as a result of the reduced delivery of microtubules. These findings indicate an important function of thyroid hormones in cerebellar formation and in the regulation of axonal transport of dopamine. Moreover, rdw rats will be useful for studies of brain function and behavioural disorders in congenital hypothyroidism.
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Iwasaki T, Tomisawa M, Nakamura H, Watano S. Synthesis of Nitrogen-doped Carbon Nanocoils via One-step Acetonitrile Catalytic CVD using a Ni-Fe Layered Double Hydroxide as Catalyst Precursor. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/cvde.201204018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Funakoshi H, Iwasaki T, Mori K, Nakashima Y, Homma Y, Takahashi J, Kamura H, Toda H, Shiga T. Can We Appropriately Triage Emergency Patients Using the Simplified Japan Triage and Acuity Scale-Based Triage Scale?: Validation of a Triage Scale Emphasizing Physiologic Variables or Mechanism of Injuries. Ann Emerg Med 2013. [DOI: 10.1016/j.annemergmed.2013.07.099] [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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Sekiguchi M, Tsunemi S, Kitano S, Sano H, Iwasaki T. THU0089 Hepatocyte Growth Factor Receptor (C-MET) Signaling Pathway Regulates Synovial Cell Production of Inflammatory Mediators and Osteoblast Differentiation. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hashimoto N, Uchiyama S, Kitano M, Iwasaki T, Sano H, Hashimoto T. THU0190 Ultrasonagraphic assessment of submandibular glands in anti-centromere antibody positive and negative primary sjogren’s syndrome patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kitano M, Kitano S, Ishizu M, Furukawa T, Yoshikawa T, Fujita K, Katashima Y, Sato C, Saito A, Nishioka A, Sekiguchi M, Azuma N, Hashimoto N, Tsunoda S, Matsui K, Iwasaki T, Sano H. SAT0119 Effect of Abatacept on Bone Homeostasis and Osteopontin in Rheumatoid Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hashimoto N, Kuno H, Kitano M, Iwasaki T, Sano H, Hashimoto T. AB0502 Long-term follow-up of esophageal diameter in patients with anti-centromere antibody sero-positive systemic sclerosis and primary sjögren’s syndrome. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kitano M, Kitano S, Sato C, Nogami M, Morimoto M, Nishioka A, Sekiguchi M, Azuma N, Hashimoto N, Tsunoda S, Matsui K, Iwasaki T, Sano H. AB0557 Effects of tocilizumab on bone homeostasis and DICKKOPF-1 in rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ide K, Uchida N, Iyori K, Mochizuki T, Fukushima R, Iwasaki T, Nishifuji K. Multi-system progressive angiomatosis in a dog resembling blue rubber bleb nevus syndrome in humans. J Small Anim Pract 2013; 54:201-4. [PMID: 23496103 DOI: 10.1111/jsap.12034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A six-year-old, neutered, female golden retriever was presented with generalised, dark purple to black cutaneous nodules and gastrointestinal haemorrhage. Histopathologically, all cutaneous nodules were diagnosed as benign cavernous haemangiomas. Endoscopic analysis revealed similar nodules in the oesophagus, stomach and duodenum. At laparotomy, similar nodules were seen on the visceral peritoneal lining of abdominal organs. Metastatic haemangiosarcoma was ruled out based on histological features and lack of primary tumour in spleen, liver or heart ultrasonographically. Blood loss associated with gastrointestinal haemorrhage was managed with blood transfusion. To the authors' knowledge, this is the first canine case of multi-system progressive angiomatosis resembling blue rubber bleb nevus syndrome in humans.
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Iwasaki T, Nakatsuka R, Murase K, Takata H, Nakamura H, Watano S. Simple and rapid synthesis of magnetite/hydroxyapatite composites for hyperthermia treatments via a mechanochemical route. Int J Mol Sci 2013; 14:9365-78. [PMID: 23629669 PMCID: PMC3676787 DOI: 10.3390/ijms14059365] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 04/19/2013] [Accepted: 04/22/2013] [Indexed: 11/17/2022] Open
Abstract
This paper presents a simple method for the rapid synthesis of magnetite/hydroxyapatite composite particles. In this method, superparamagnetic magnetite nanoparticles are first synthesized by coprecipitation using ferrous chloride and ferric chloride. Immediately following the synthesis, carbonate-substituted (B-type) hydroxyapatite particles are mechanochemically synthesized by wet milling dicalcium phosphate dihydrate and calcium carbonate in a dispersed suspension of magnetite nanoparticles, during which the magnetite nanoparticles are incorporated into the hydroxyapatite matrix. We observed that the resultant magnetite/hydroxyapatite composites possessed a homogeneous dispersion of magnetite nanoparticles, characterized by an absence of large aggregates. When this material was subjected to an alternating magnetic field, the heat generated increased with increasing magnetite concentration. For a magnetite concentration of 30 mass%, a temperature increase greater than 20 K was achieved in less than 50 s. These results suggest that our composites exhibit good hyperthermia properties and are promising candidates for hyperthermia treatments.
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Xu M, Sulkowski ZL, Parekh P, Khan A, Chen T, Midha S, Iwasaki T, Shimokawa N, Koibuchi N, Zavacki AM, Sajdel-Sulkowska EM. Effects of Perinatal Lipopolysaccharide (LPS) Exposure on the Developing Rat Brain; Modeling the Effect of Maternal Infection on the Developing Human CNS. THE CEREBELLUM 2013; 12:572-86. [DOI: 10.1007/s12311-013-0465-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Cerini C, Gondouin B, Dou L, Duval-Sabatier A, Brunet P, Dignat- George F, Burtey S, Okano K, Okano K, Iwasaki T, Jinnai H, Hibi A, Miwa N, Kimata N, Nitta K, Akiba T, Dolley-Hitze T, Verhoest G, Jouan F, Arlot-Bonnemains Y, Lavenu A, Belaud-Rotureau MA, Rioux-Leclercq N, Vigneau C, Cox SN, Sallustio F, Serino G, Loverre A, Pesce F, Gigante M, Zaza G, Stifanelli P, Ancona N, Schena FP, Marc P, Jacques T, Green JM, Mortensen RB, Verma R, Leu K, Schatz PJ, Wojchowski DM, Ihoriya C, Satoh M, Sasaki T, Kashihara N, Jung YJ, Kang KP, Lee AS, Lee JE, Lee S, Park SK, Kim W, Kang KP, Florian T, Tepel M, Ying L, Katharina K, Nora F, Antje W, Alexandra S, Chiu YT, Wu MJ, Liu ZH, Liang Y, Zheng CX, Chen ZH, Zeng CH, Ranzinger J, Rustom A, Kihm L, Heide D, Scheurich P, Zeier M, Schwenger V, Liu J, Liu J, Zhong F, Xu L, Zhou Q, Hao X, Wang W, Chen N, Zhong F, Zhong F, Liu X, Zhou Q, Hao X, Lu Y, Guo S, Wang W, Lin D, Chen N, Vilasi A, Deplano S, Deplano S, Cutillas P, Unwin R, Tam FWK, Medrano-Andres D, Lopez-Martinez V, Martinez-Miguel P, Cano JL, Arribas I, Rodiguez-Puyol M, Lopez-Ongil S, Kadoya H, Nagasu H, Satoh M, Sasaki T, Kashihara N, Lindeberg E, Grundstrom G, Alexandra S, Tepel M, Katharina K, Alexandra M, Ghosh CC, David S, Mukherjee A, John SG, Mcintyre CW, Haller H, Parikh SM, Troyano N, Del Nogal M, Olmos G, Mora I, DE Frutos S, Rodriguez-Puyol M, Ruiz MP, Rothe H, Rothe H, Shapiro W, Ketteler M, Ramakrishnan SK, Loupy A, Houillier P, Guilhermino Pereira L, Boim M, Aragao D, Casarini D, Jin Y, Jin Y, Chen N, Moon JY, Kim YG, Lee SH, Lee TW, Ihm CG, Kim EY, Lee HJ, Wi JG, Jeong KH, Ruan XZ, LI LC, Varghese Z, Chen JB, Lee CT, Moorhead J, Dou L, Gondouin B, Cerini C, Poitevin S, Brunet P, Dignat-George F, Stephane B, Bonanni A, Verzola D, Maggi D, Brunori G, Sofia A, Mannucci I, Maffioli S, Salani B, D'amato E, Saffioti S, Laudon A, Cordera R, Garibotto G, Maquigussa E, Boim M, Arnoni C, Guilhermino Pereira L. Cell signalling / Pathophysiology. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs213] [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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Takeuchi H, Nakamura H, Iwasaki T, Watano S. Numerical modeling of fluid and particle behaviors in impact pulverizer. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2011.10.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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