51
|
Matsuo K, Takazawa Y, Ross MS, Elishaev E, Podzielinski I, Yunokawa M, Sheridan TB, Bush SH, Klobocista MM, Blake EA, Takano T, Matsuzaki S, Baba T, Satoh S, Shida M, Nishikawa T, Ikeda Y, Adachi S, Yokoyama T, Takekuma M, Fujiwara K, Hazama Y, Kadogami D, Moffitt MN, Takeuchi S, Nishimura M, Iwasaki K, Ushioda N, Johnson MS, Yoshida M, Hakam A, Li SW, Richmond AM, Machida H, Mhawech-Fauceglia P, Ueda Y, Yoshino K, Yamaguchi K, Oishi T, Kajiwara H, Hasegawa K, Yasuda M, Kawana K, Suda K, Miyake TM, Moriya T, Yuba Y, Morgan T, Fukagawa T, Wakatsuki A, Sugiyama T, Pejovic T, Nagano T, Shimoya K, Andoh M, Shiki Y, Enomoto T, Sasaki T, Fujiwara K, Mikami M, Shimada M, Konishi I, Kimura T, Post MD, Shahzad MM, Im DD, Yoshida H, Omatsu K, Ueland FR, Kelley JL, Karabakhtsian RG, Roman LD. Significance of histologic pattern of carcinoma and sarcoma components on survival outcomes of uterine carcinosarcoma. Ann Oncol 2016; 27:1257-66. [PMID: 27052653 DOI: 10.1093/annonc/mdw161] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 03/29/2016] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND To examine the effect of the histology of carcinoma and sarcoma components on survival outcome of uterine carcinosarcoma. PATIENTS AND METHODS A multicenter retrospective study was conducted to examine uterine carcinosarcoma cases that underwent primary surgical staging. Archived slides were examined and histologic patterns were grouped based on carcinoma (low-grade versus high-grade) and sarcoma (homologous versus heterologous) components, correlating to clinico-pathological demographics and outcomes. RESULTS Among 1192 cases identified, 906 cases were evaluated for histologic patterns (carcinoma/sarcoma) with high-grade/homologous (40.8%) being the most common type followed by high-grade/heterologous (30.9%), low-grade/homologous (18.0%), and low-grade/heterologous (10.3%). On multivariate analysis, high-grade/heterologous (5-year rate, 34.0%, P = 0.024) and high-grade/homologous (45.8%, P = 0.017) but not low-grade/heterologous (50.6%, P = 0.089) were independently associated with decreased progression-free survival (PFS) compared with low-grade/homologous (60.3%). In addition, older age, residual disease at surgery, large tumor, sarcoma dominance, deep myometrial invasion, lymphovascular space invasion, and advanced-stage disease were independently associated with decreased PFS (all, P < 0.01). Both postoperative chemotherapy (5-year rates, 48.6% versus 39.0%, P < 0.001) and radiotherapy (50.1% versus 44.1%, P = 0.007) were significantly associated with improved PFS in univariate analysis. However, on multivariate analysis, only postoperative chemotherapy remained an independent predictor for improved PFS [hazard ratio (HR) 0.34, 95% confidence interval (CI) 0.27-0.43, P < 0.001]. On univariate analysis, significant treatment benefits for PFS were seen with ifosfamide for low-grade carcinoma (82.0% versus 49.8%, P = 0.001), platinum for high-grade carcinoma (46.9% versus 32.4%, P = 0.034) and homologous sarcoma (53.1% versus 38.2%, P = 0.017), and anthracycline for heterologous sarcoma (66.2% versus 39.3%, P = 0.005). Conversely, platinum, taxane, and anthracycline for low-grade carcinoma, and anthracycline for homologous sarcoma had no effect on PFS compared with non-chemotherapy group (all, P > 0.05). On multivariate analysis, ifosfamide for low-grade/homologous (HR 0.21, 95% CI 0.07-0.63, P = 0.005), platinum for high-grade/homologous (HR 0.36, 95% CI 0.22-0.60, P < 0.001), and anthracycline for high-grade/heterologous (HR 0.30, 95% CI 0.14-0.62, P = 0.001) remained independent predictors for improved PFS. Analyses of 1096 metastatic sites showed that carcinoma components tended to spread lymphatically, while sarcoma components tended to spread loco-regionally (P < 0.001). CONCLUSION Characterization of histologic pattern provides valuable information in the management of uterine carcinosarcoma.
Collapse
|
52
|
Fujiwara K, Shintani D, Nishikawa T. Clear-cell carcinoma of the ovary. Ann Oncol 2016; 27 Suppl 1:i50-i52. [DOI: 10.1093/annonc/mdw086] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
53
|
Anzai H, Hata K, Kishikawa J, Ishii H, Nishikawa T, Tanaka T, Tanaka J, Kiyomatsu T, Kawai K, Nozawa H, Kazama S, Yamaguchi H, Ishihara S, Sunami E, Kitayama J, Watanabe T. Clinical pattern and progression of ulcerative proctitis in the Japanese population: a retrospective study of incidence and risk factors influencing progression. Colorectal Dis 2016; 18:O97-O102. [PMID: 26663677 DOI: 10.1111/codi.13237] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 11/03/2015] [Indexed: 02/08/2023]
Abstract
AIM The rate of extension of proctitis in Western countries has been reported, but no data regarding long-term follow-up have been described for the Japanese population. Additionally, patients with long-standing or extensive ulcerative colitis have an increased risk for developing colorectal cancer. This study evaluated both the rate of extension of the disease and the development of neoplasia among patients with an initial diagnosis of ulcerative proctitis. METHOD We retrospectively investigated the medical charts of patients with proctitis from 1979 to 2014. The primary focus of this research was the extension of the inflammatory area. The secondary focus included risk factors for disease extension and the development of neoplasia. RESULTS Sixty-six patients satisfied the inclusion criteria. Proximal extension of the disease occurred in 34 patients: 19 patients had left-sided colitis and 15 had pancolitis. According to a multivariate analysis, disease extension was significantly higher in patients with disease onset before 25 years of age (P-value = 0.043). The cumulative rates of disease extension at 10 and 20 years were 33.8% and 52.2%, respectively. Three patients were diagnosed with dysplasia during follow-up, all of whom experienced disease extension before the development of dysplasia. CONCLUSION The rate of extension of ulcerative colitis in the Japanese population was comparable to that in Western countries. A younger age of disease onset was associated with disease extension. Extension of proctitis may be associated with an increased risk of colorectal cancer.
Collapse
|
54
|
Kukidome D, Nishikawa T, Sato M, Igata M, Kawashima J, Shimoda S, Matsui K, Obayashi K, Ando Y, Araki E. Measurement of small fibre pain threshold values for the early detection of diabetic polyneuropathy. Diabet Med 2016; 33:62-9. [PMID: 25970541 DOI: 10.1111/dme.12797] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/08/2015] [Indexed: 02/03/2023]
Abstract
AIM To investigate whether Aδ and C fibre pain threshold values, measured using intra-epidermal electrical stimulation (IES), in people with and without Type 2 diabetes are useful in evaluating diabetic polyneuropathy (DPN) severity. METHODS Aδ and C fibre pain threshold values were measured in Japanese people with (n = 120) and without (n = 76) Type 2 diabetes by IES. Nerve conduction studies and other tests were performed to evaluate diabetic complications. RESULTS Aδ and C fibre pain threshold values were high in people with diabetes compared with control subjects (Aδ fibre: 0.050 vs. 0.030 mA, P < 0.01; C fibre: 0.180 vs. 0.070 mA, P < 0.01). Participants with diabetes and neuropathy had significantly higher Aδ and C fibre pain threshold values than participants without neuropathy (Aδ fibres 0.063 vs. 0.039 mA, P < 0.01; C fibres 0.202 vs. 0.098 mA, P < 0.05). C fibre pain threshold values were significantly higher in participants with diabetes and diabetic microvascular complications than in participants without complications. Threshold values increased with complication progression. When DPN was diagnosed according to the Diabetic Neuropathy Study Group in Japan criteria, the cut-off for the C fibre pain threshold values was 0.125 mA (area under the curve 0.758, sensitivity 81.5%, specificity 61.5%). The IES test took less time (P < 0.01) and was less invasive (P < 0.01) than the nerve conduction studies. CONCLUSIONS Intra-epidermal electrical stimulation is a non-invasive and easy measurement of small fibre pain threshold values. It may be clinically useful for C fibre measurement to diagnose early DPN as defined by the Diabetic Neuropathy Study Group in Japan criteria.
Collapse
|
55
|
Nishikawa T, Takahashi T, Nakamori M, Hosomi N, Maruyama H, Miyazaki Y, Izumi Y, Matsumoto M. The identification of raft-derived tau-associated vesicles that are incorporated into immature tangles and paired helical filaments. Neuropathol Appl Neurobiol 2015; 42:639-653. [PMID: 26501932 DOI: 10.1111/nan.12288] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/07/2015] [Accepted: 10/26/2015] [Indexed: 12/14/2022]
Abstract
AIMS Neurofibrillary tangles (NFTs), a cardinal pathological feature of neurodegenerative disorders, such as Alzheimer's disease (AD) are primarily composed of hyper-phosphorylated tau protein. Recently, several other molecules, including flotillin-1, phosphatidylinositol-4,5-bisphosphate [PtdIns(4,5)P2] and cyclin-dependent kinase 5 (CDK5), have also been revealed as constituents of NFTs. Flotillin-1 and PtdIns(4,5)P2 are considered markers of raft microdomains, whereas CDK5 is a tau kinase. Therefore, we hypothesized that NFTs have a relationship with raft domains and the tau phosphorylation that occurs within NFTs. METHODS We investigated six cases of AD, six cases of other neurodegenerative diseases with NFTs and three control cases. We analysed the PtdIns(4,5)P2-immunopositive material in detail, using super-resolution microscopy and electron microscopy to elucidate its pattern of expression. We also investigated the spatial relationship between the PtdIns(4,5)P2-immunopositive material and tau kinases through double immunofluorescence analysis. RESULTS Pretangles contained either paired helical filaments (PHFs) or PtdIns(4,5)P2-immunopositive small vesicles (approximately 1 μm in diameter) with nearly identical topology to granulovacuolar degeneration (GVD) bodies. Various combinations of these vesicles and GVD bodies, the latter of which are pathological hallmarks observed within the neurons of AD patients, were found concurrently in neurons. These vesicles and GVD bodies were both immunopositive not only for PtdIns(4,5)P2, but also for several tau kinases such as glycogen synthase kinase-3β and spleen tyrosine kinase. CONCLUSIONS These observations suggest that clusters of raft-derived vesicles that resemble GVD bodies are substructures of pretangles other than PHFs. These tau kinase-bearing vesicles are likely involved in the modification of tau protein and in NFT formation.
Collapse
|
56
|
Nishikawa T, Tanabe Y, Tsuda H, Yoshida M, Shimoi T, Shimomura A, Kodaira M, Yunokawa M, Yonemori K, Shimizu C, Fujiwara Y, Tamura K. 66P Predictive markers of clinical progressive disease during neoadjuvant chemotherapy in early triple negative breast cancers. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.15] [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
|
57
|
Nishikawa T, Miyamatsu N, Higashiyama A, Nishida Y, Kubota Y, Hirata T, Sugiyama D, Kuwabara K, Miyamoto Y, Okamura T. Water intake for preventing stroke in healthy Japanese: KOBE Study. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.217] [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
|
58
|
Takechi M, Matsunaga G, Sakurai S, Sasajima T, Yagyu J, Hoshi R, Kawamata Y, Kurihara K, Nishikawa T, Ryo T, Kagamihara S, Nakamura K. Development of magnetic sensors for JT-60SA. FUSION ENGINEERING AND DESIGN 2015. [DOI: 10.1016/j.fusengdes.2015.06.108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
59
|
Uezato A, Yamamoto N, Iwayama Y, Hiraoka S, Hiraaki E, Umino A, Haramo E, Umino M, Yoshikawa T, Nishikawa T. Reduced cortical expression of a newly identified splicing variant of the DLG1 gene in patients with early-onset schizophrenia. Transl Psychiatry 2015; 5:e654. [PMID: 26440542 PMCID: PMC4930131 DOI: 10.1038/tp.2015.154] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 08/13/2015] [Accepted: 09/06/2015] [Indexed: 02/07/2023] Open
Abstract
The human discs, large homolog 1 gene (DLG1) is mapped to the schizophrenia-susceptibility locus 3q29, and it encodes a scaffold protein that interacts with the N-methyl-D-aspartate receptor presumably dysregulated in schizophrenia. In the current study, we have newly identified a splicing variant of DLG1, which is transcribed from an unreported 95-base-pair exon (exon 3b) and is labeled 3b(+). We investigated the mRNA expression of 3b(+) in the post-mortem dorsolateral prefrontal cortices of patients with psychiatric disorders, obtained from The Stanley Medical Research Institute, and examined the potential association of the expression with the genotype of the single-nucleotide polymorphism (SNP) rs3915512 located within exon 3b. A real-time quantitative reverse transcriptase-polymerase chain reaction revealed that the mRNA levels of 3b(+) were significantly reduced in patients with early-onset schizophrenia (onset at <18 years old, P=0.0003) but not in those with non-early-onset schizophrenia, early-onset or non-early-onset bipolar disorder or in the controls. Furthermore, the genotype at the rs3915512 SNP was closely associated with the levels of 3b(+) mRNA expression. It is inferred that the T allele fails to meet the exonic splicing enhancer consensus, thus resulting in skipping of exon 3b, leading to the expression of 3b(-) (the previously known DLG1 variant) but not 3b(+). Because all the subjects with early-onset schizophrenia in the current study possess the T/T genotype, the reduced level of the DLG1 3b(+) transcript may be involved in the susceptibility and/or pathophysiology of early-onset schizophrenia.
Collapse
|
60
|
Ito T, Kenmochi T, Nishikawa T, Maruyama M, Kusaka M, Sasaki H, Asano T, Matsubara H, Hoshinaga K. A novel screening test for detecting graft thrombosis after pancreatic transplantation using contrast-enhanced ultrasonography with sonazoid. Transplant Proc 2015; 46:1917-9. [PMID: 25131070 DOI: 10.1016/j.transproceed.2014.05.071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Pancreatic graft thrombosis is the primary cause of nonimmunologic graft loss, with an incidence ranging from 5% to 15%. Therefore, developing a screening test to detect graft thrombosis after pancreatic transplantation is important. We created a screening test to assess graft thrombosis after pancreatic transplantation using contrast-enhanced ultrasonography (CEUS) with Sonazoid in addition to Doppler ultrasonography. A total of seven patients were examined using CEUS after undergoing pancreatic transplantation. All patients were observed to have a clear blood flow from the horizontal region to the peripheral region of the splenic vein in the pancreatic graft, and only one of the seven patients exhibited a blood flow in the horizontal portion of the splenic vein on Doppler ultrasonography performed immediately after pancreatic transplantation. Results from CEUS with Sonazoid showed the blood flow in the splenic vein and parenchyma of the pancreatic graft in detail, despite the slow and lateral blood flow in the splenic vein of the pancreatic graft immediately after transplantation.
Collapse
|
61
|
Hashimoto T, Nishikawa T. Nomenclature for diseases with IgA antikeratinocyte cell surface autoantibodies. Br J Dermatol 2015; 173:868-9. [DOI: 10.1111/bjd.13813] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
62
|
Ishiwata S, Balu DT, Umino A, Coyle JT, Nishikawa T. [JSNP Excellent Presentation Award for CINP2014]. NIHON SHINKEI SEISHIN YAKURIGAKU ZASSHI = JAPANESE JOURNAL OF PSYCHOPHARMACOLOGY 2015; 35:53-54. [PMID: 26027070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
|
63
|
Nagao S, Nishikawa T, Hanaoka T, Kurosaki A, Iwasa N, Hasegawa K, Fujiwara K. Feasibility Study of Combination Chemotherapy with Paclitaxel, Doxorubicin and Cisplatin without Prophylactic Granulocyte Colony-stimulating Factor Injection for Intermediate-to-high Risk or Recurrent Endometrial Cancer. Jpn J Clin Oncol 2014; 44:1040-1044. [DOI: 10.1093/jjco/hyu124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
64
|
Nankaku M, Akiyama H, Kakinoki R, Nishikawa T, Tanaka Y, Matsuda S. Factors associated with ambulatory status 6 months after total hip arthroplasty. Physiotherapy 2014; 100:263-7. [DOI: 10.1016/j.physio.2013.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 06/17/2013] [Indexed: 10/26/2022]
|
65
|
Takahashi Y, Fukunishi S, Nishikawa T, Nouda S, Sasaki Y, Sanomura M, Umegaki E, Higuchi K. Small-intestinal hemorrhage caused by treatment with sorafenib for hepatocellular carcinoma and diagnosed by capsule endoscopy. Endoscopy 2014; 45 Suppl 2 UCTN:E179-80. [PMID: 23801291 DOI: 10.1055/s-0032-1326641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
|
66
|
Nakamura K, Oda H, Tanaka S, Kuga Y, Yamamoto M, Nishikawa T, Juji T, Shimizu M. Usefulness of absorbable screws in the Sauvé–Kapandji procedure for rheumatoid wrist reconstruction. Mod Rheumatol 2014; 12:144-7. [DOI: 10.3109/s101650200024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
67
|
Nakamatsu K, Nishimura Y, Yokokawa M, Nishikawa T, Ishikawa K, Tamura M, Shibata T. Intensity Modulated Radiation Therapy (IMRT) for High-Risk Prostate Cancer: Effects of Total Dose on PSA Failure. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
68
|
Kimura T, Nishikawa T. A biomarker panel: an additional resource in acute stroke evaluation? Minerva Anestesiol 2013; 79:711-712. [PMID: 23558768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
|
69
|
Oguri K, Tsunoi T, Kato K, Nakano H, Nishikawa T, Gotoh H, Tateno K, Sogawa T. Surface Carrier Dynamics on Semiconductor Studied with Femtosecond Core-Level Photoelectron Spectroscopy Using Extreme Ultraviolet High-Order Harmonic Source. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20134104017] [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
|
70
|
Takabayashi S, Nishikawa T, Katoh H. A novel Kit gene mutation in CF1 mice involved in the extracellular domain of the KIT protein. Exp Anim 2012; 61:435-44. [PMID: 22850643 DOI: 10.1538/expanim.61.435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We screened for natural mutations in Crl:CF1 closed colony mice using an ordinary backcrossing system. Five of 30 CF1 males carried novel genes that caused white spots on colored coats. Their backcross progenies showed a white spot phenotype. The white spot gene was mapped to approximately 39 cM on chromosome 5, where the Kit gene is known to reside. Allelism testing between this spot gene and the Kit gene was performed using two already known Kit alleles, Kit(W), and Kit(W-v). We demonstrated that the spot mutation was semidominant and a novel allele of the Kit gene, which was tentatively named Kit(W-Ham). No infertility or anemia was observed in Kit(W-Ham) homozygotes. However, a reduced number of germ cells and mast cells was observed in Kit(W-Ham)/Kit(W) and Kit(W-Ham)/Kit(W-v) transheterozygotes. Sequencing of the 21 exons of the Kit gene in the Kit(W-Ham) mutants revealed that a unique guanine-to-adenine (G-A) transition at nucleotide position 545 (c.545G>A) of exon 3 changes arginine (R) to glutamine (Q) at position 182 in the extracellular domain of the KIT protein (p.R182Q). This extracellular KIT domain is a binding site for stem cell factors (SCF). It was concluded that the Kit(W-Ham) mutant may serve as a new model of human piebaldism.
Collapse
|
71
|
Tsukamoto S, Hara T, Yamamoto A, Ohta Y, Wada A, Ishida Y, Kito S, Nishikawa T, Minami N, Sato K, Kokubo T. Functional analysis of lysosomes during mouse preimplantation embryo development. J Reprod Dev 2012; 59:33-9. [PMID: 23080372 PMCID: PMC3943237 DOI: 10.1262/jrd.2012-096] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Lysosomes are acidic and highly dynamic organelles that are essential for macromolecule
degradation and many other cellular functions. However, little is known about lysosomal
function during early embryogenesis. Here, we found that the number of lysosomes increased
after fertilization. Lysosomes were abundant during mouse preimplantation development
until the morula stage, but their numbers decreased slightly in blastocysts. Consistently,
the protein expression level of mature cathepsins B and D was high from the one-cell to
morula stages but low in the blastocyst stage. One-cell embryos injected with siRNAs
targeted to both lysosome-associated membrane protein 1 and 2 (LAMP1 and LAMP2) were
developmentally arrested at the two-cell stage. Pharmacological inhibition of lysosomes
also caused developmental retardation, resulting in accumulation of lipofuscin. Our
findings highlight the functional changes in lysosomes in mouse preimplantation
embryos.
Collapse
|
72
|
Omasa T, Kobayashi M, Nishikawa T, Shioya S, Suga K, Uemura S, Kitani Y, Imamura Y. Enhancement of antibody production by growth factor addition in perfusion and hollow-fiber culture systems. Biotechnol Bioeng 2012; 48:673-80. [PMID: 18623537 DOI: 10.1002/bit.260480616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The effects of the high-molecular-weight growth factors, transferrin and bovine serum albumin (BSA), on antibody production were analyzed quantitatively in continuous hollow-fiber cultivation over a period of 60 days. Transferrin enhanced cell growth but had no significant effect on the specific antibody production rate, whereas BSA significantly enhanced antibody production. The antibody production rate was increased 4- and 14-fold respectively by feeding BSA at 2 and 5 g L(-1) into the EC side of the system (the side connected to the cell-containing outer part of the hollow-fiber unit) compared with the production achieved without BSA. Addition of 5 g L(1) BSA into the IC side of the system (the side connected to the inner part of the hollow-fiber unit) resulted in a 2.5-fold increase in the antibody production rate. The effect of BSA was also analyzed using the perfusion culture system with a separation unit. When fresh medium containing either 2 or 5 g L(-1) BSA was fed into the reactor, both the specific growth rate and specific death rate increased, while the specific antibody production rate was increased 2- and 25-fold, respectively, by feeding BSA at these two concentrations compared with no addition. Comparing the two systems, the increase in the antibody production rate achieved with the hollow-fiber system was threefold greater than that in the perfusion culture system with the same concentration of BSA feeding. (c) 1995 John Wiley & Sons, Inc.
Collapse
|
73
|
Nishikawa T, Morishita N. Current status of memorial services for laboratory animals in Japan: a questionnaire survey. Exp Anim 2012; 61:177-81. [PMID: 22531734 DOI: 10.1538/expanim.61.177] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
In this study, we found that almost all institutions conducting animal experiments, such as universities, corporations, and research laboratories, also conducted memorial services for the animals sacrificed during animal experimentation. A questionnaire survey was conducted among 120 institutions. A total of 83 (69.1%) valid responses were obtained from the participating institutions. Memorial services were held at 79 institutions (95.1%). Memorial services for laboratory animals have been mainly conducted to show appreciation, comfort the spirit, and console the souls.
Collapse
|
74
|
Yoshizaki K, Nakazawa S, Nishikawa T, Isobe T. P080 Pathogenic role of IL-6 on the inducation of acute phase proteins, CRP and SAA in rheumatoid arthritis a chronic inflammatory disease. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
75
|
Yoshizaki K, Nakazawa S, Nishikawa T, Tanigawa M, Ito H. P160 A humanized anti-IL-6 receptor antibody for the treatment of chronic inflammatory diseases. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
76
|
Goyagi T, Tobe Y, Nishikawa T. Long-term and spatial memory effects of selective β1-antagonists after transient focal ischaemia in rats. Br J Anaesth 2012; 109:399-406. [PMID: 22581807 DOI: 10.1093/bja/aes134] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Although various reports have shown that β-antagonists provide neuroprotective effects after cerebral ischaemia, their effect on spatial memory after transient focal ischaemia is not known. We investigated the treatment of β1-antagonists on neurological outcome spatial memory for 1 month after focal cerebral ischaemia in rats. METHODS Male rats randomly received an i.v. infusion of saline 0.5 ml h(-1), esmolol 200 μg kg(-1) min(-1), or landiolol 50 μg kg(-1) min(-1). Infusion was initiated 30 min before middle cerebral artery occlusion and continued for 24 h. The infarct areas in the hippocampus and striatum were measured after the final retention trial and neurological examinations. RESULTS Neurological deficit scores in the landiolol- and esmolol-treated rats were significantly lower than in the control rats at 1, 4, 7, and 11 days after ischaemia (P<0.05). Using the Morris water maze to assess spatial memory, we found that escape latency and swimming path length to the platform were significantly shorter in the landiolol-treated rats, compared with the saline-treated rats at 4 and 11 days after ischaemia (P<0.05). The mean (SD) infarct area was 19.1 (8.0)% in the striatum and 18.6 (10.0)% in the hippocampus of the landiolol-treated rats, and 16.8 (14.0)% and 16.8 (15.0)% in the striatum and hippocampus, respectively, of esmolol-treated rats. This was significantly less than in control rats [striatum 31.7 (14.0)% and hippocampus 29.8 (13.0)%, P<0.05]. CONCLUSIONS The current study indicates that although esmolol and landiolol provided long-term neuroprotection in terms of histological outcome, they had no effect on neurological outcome and spatial memory retention.
Collapse
|
77
|
Nishida M, Nariai T, Hiura M, Ishii K, Nishikawa T. Memory deficits due to brain injury: unique PET findings and dream alterations. CASE REPORTS 2011; 2011:bcr.09.2011.4845. [DOI: 10.1136/bcr.09.2011.4845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
|
78
|
Tachibana I, Nishimura Y, Shibata T, Kanamori S, Nakamatsu K, Tamura M, Koike R, Nishikawa T, Ishikawa K, Hosono M. A Prospective Clinical Trial on Tumor Hypoxia Imaging with 18F-misonidazole (F-MISO) Positron Emission Tomography (PET). Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
79
|
Nishida M, Tomita T, Nakashima Y, Wada S, Yamamoto T, Yasuda A, Nishikawa T. P24.7 Topographically enhanced slow spindles in medicated depressive patients. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60614-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
80
|
Nagao S, Nishikawa T, Kurosaki A, Ohishi R, Iwasa N, Hasegawa K, Fujiwara K. Intravenous (IV)/intraperitoneal (IP) paclitaxel and IP carboplatin in patients with epithelial ovarian, fallopian tube, or peritoneal carcinoma: A feasibility study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
81
|
Matsuura M, Nishikawa T, Fujiwara T, Kataoka K. [Five cases of contralateral pneumothorax after lung resection]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2011; 64:280-283. [PMID: 21491721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Contralateral pneumothorax is one of severe complications after lung resection. We present our experiences with surgical treatment of 5 cases [case 4 is under the percutaneous cardiopulmonary support (PCPS) assistance] of contralateral pneumothorax after lung resection. All cases were men and not able to stop smoking, the disease caused by lung resection was lung cancer 3 and tuberculosis 2. Operative procedure was lobectomy 4 and pneumonectomy 1. Tracheal intubation was done before radiological confirmation of pneumothorax in 4 cases. Immediately after diagnosis all patients underwent chest drainage. Because the contralateral pneumothorax after lung resection is severe complication, we thought that surgical treatment is necessary. Though the thoracoscopic surgery under the PCPS assistance is also possible, it seems that a small thoracotomy with adjusting ventilation by anesthetist are more favorable. Accurate diagnosis and treatment is the key for success of treatment. The patient who receives lung resection due to lung cancer often has emphysema, and the risk of contralateral pneumothorax after the operation should also be explained.
Collapse
|
82
|
Ishida Y, Ohmachi Y, Takai N, Hiraoka T, Ogiu T, Nishikawa T, Nishimura Y, Shimada Y. Neurobehavioral changes in mice exposed to fast neutrons in utero. JOURNAL OF RADIATION RESEARCH 2011; 52:257-263. [PMID: 21422737 DOI: 10.1269/jrr.10079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Epidemiological studies have revealed that radiation causes brain development abnormalities in atomic bomb survivors exposed in utero. Rat and mouse studies have also shown that prenatal exposure to low-linear energy transfer radiation induces developmental brain anomalies. Because the effects of prenatal irradiation on adult behavior patterns remain largely unknown, the present study investigated the effects of neutron exposure in utero on postnatal behavior patterns in mice. [C57BL/6J × C3H/He] hybrid (B6C3F1) mice were exposed to cyclotron-derived fast neutrons with peak energy of 10 MeV (0.02-0.2 Gy) or Cs-137 gamma-rays (0.2-1.5 Gy) on embryonic day 13.5. At 5.5-8 months of age, the neurobehavior of male offspring was examined by Rota-rod treadmill and locomotor activity. The accumulation of radio-labeled drug at muscarinic acetylcholine and serotonin receptors in mice from control and neutron-irradiated groups was determined by the tracer method. Locomotor activity during the dark period increased in the 0.02 Gy neutron-irradiated group. Furthermore, at 5.5 months of age, tracer binding in vivo to the muscarinic acetylcholine increased and to the serotonin receptors decreased in the 0.02 Gy neutron-irradiated group. In conclusion, the present study reveals that a certain "low-dose window" may exist for radiation-induced changes in neurobehavior and binding to neurotransmitter receptors, because there was correlation in neurobehavior and binding to neurotransmitter receptors in the 0.02 Gy neutron-irradiated group though there was not correlation in the neutron-irradiated groups more than 0.05 Gy.
Collapse
|
83
|
Mulu A, Diro E, Tekleselassie H, Belyhun Y, Anagaw B, Alemayehu M, Gelaw A, Biadglegne F, Desalegn K, Yifiru S, Tiruneh M, Kassu A, Nishikawa T, Isogai E. Effect of Ethiopian multiflora honey on fluconazole-resistant Candida species isolated from the oral cavity of AIDS patients. Int J STD AIDS 2010; 21:741-5. [DOI: 10.1258/ijsa.2010.010140] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This study aimed to determine the antifungal effect of Ethiopian multiflora honey against Candida species isolated from the oral cavity of AIDS patients. Oral rinses were obtained from 13 AIDS patients and cultured on CHROMagar plates at 37°C for 48 hours. Candida species were identified by microbiological and molecular techniques. The antifungal effect of the honey sample on Candida was investigated by an agar dilution technique. Susceptibility of the Candida species to fluconazole was tested following a semi-modified microdilution method. Growth of both fluconazole-susceptible and -resistant Candida species was inhibited with a minimum fungicidal concentration (MFC) of 35–40% (v/v) honey. The MFC of different Candida species was not significantly different ( P > 0.05). From the total of 25 Candida isolates tested for susceptibility, 11 (44%), eight (32%) and six (24%) of the isolates were sensitive (minimum inhibitory concentrations [MICs] < 8 µg/mL), susceptible (dose-dependent: MICs 16–32 µg/mL) and resistant (MICs > 64 µg/mL) to fluconazole, respectively. Ethiopian multiflora honey has antifungal activity against fluconazole-resistant Candida species isolated from the oral cavity of AIDS patients. This supports the existing folkloric practice of using honey to treat oral lesions. Nevertheless, identification of the bioactive agents in honey, their clinical evaluation and pharmacological standardization are crucial.
Collapse
|
84
|
Kataoka K, Nishikawa T, Fujiwara T, Matsuura M. [Thoracoscopically removed thoracolithiasis]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2010; 63:1066-1069. [PMID: 21066850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Thoracolithiasis is a rare condition with only 16 cases of surgically removed nodules reported in the literature in Japan. We report an additional thoracoscopically removed case. A 62-year-old man was pointed out an abnormal shadow behind the left diaphragmatic dome on a routine health examination. Computed tomography (CT) revealed a round mass lesion with calcification, about 11 mm in diameter, in the left thorax. Video-assisted thoracic surgery (VATS) was performed and a white 11 mm completely free nodule in the left pleural cavity was removed. Pathological findings revealed necrotic fat tissue in the center surrounded by hyalinized fibrous tissue, being consistent with thoracolithiasis.
Collapse
|
85
|
Yamashiro T, Nishikawa T, Isami S, Wei CN, Fukumoto K, Matsuo H, Yoshinaga T, Kukidome D, Motoshima H, Matsumura T, Ueda A, Araki E. The effect of group-based lifestyle interventions on risk factors and insulin resistance in subjects at risk for metabolic syndrome: the Tabaruzaka Study 1. Diabetes Obes Metab 2010; 12:790-7. [PMID: 20649631 DOI: 10.1111/j.1463-1326.2010.01236.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM The aim of this study was to evaluate the efficacy of two group-based lifestyle interventions in ameliorating the risk factors of metabolic syndrome (MS) and insulin resistance. METHODS Ninety-eight subjects who had at least one component of MS were randomized into standard intervention (SI) (4-month intervention; n = 50) and extended intervention (EI) (10-month intervention; n = 48) groups, and 39 subjects were followed up for a control group. The effects of intervention were evaluated after 10, 22 and 34 months. RESULTS At month 10, the standard and EI groups showed improved body mass index (BMI) (SI, -0.28; EI, -0.47; control, -0.09), high-density lipoprotein (HDL) cholesterol, fasting plasma glucose and A1c and a decreased mean number of components of MS (SI, -0.37; EI, -0.51; control, 0.08). At month 34, the effects on BMI (SI, -0.66; EI, -0.60; control, -0.05) and HDL-cholesterol were sustained for both the intervention groups. In controls, the increases in fasting plasma glucose and the mean number of components of MS from the baseline to month 34 were greater than those in the standard and EI groups. Whole body insulin sensitivity index and hepatic insulin resistance index were also improved at month 10. CONCLUSIONS Group-based lifestyle intervention could be an efficient way to prevent MS. Its effects were sustainable, at least in part, for 2 years. These effects may be mediated by an improvement in insulin sensitivity.
Collapse
|
86
|
Ishida Y, Takabatake T, Kakinuma S, Doi K, Yamauchi K, Kaminishi M, Kito S, Ohta Y, Amasaki Y, Moritake H, Kokubo T, Nishimura M, Nishikawa T, Hino O, Shimada Y. Genomic and gene expression signatures of radiation in medulloblastomas after low-dose irradiation in Ptch1 heterozygous mice. Carcinogenesis 2010; 31:1694-701. [PMID: 20616149 DOI: 10.1093/carcin/bgq145] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Accurate cancer risk assessment of low-dose radiation poses many challenges that are partly due to the inability to distinguish radiation-induced tumors from spontaneous ones. To elucidate characteristic features of radiation-induced tumors, we analyzed 163 medulloblastomas that developed either spontaneously or after X-ray irradiation at doses of 0.05-3 Gy in Ptch1 heterozygous mice. All spontaneous tumors showed loss of heterozygosity in broad regions on chromosome 13, with losses at all consecutive markers distal to Ptch1 locus (S-type). In contrast, all tumors that developed after 3 Gy irradiation exhibited interstitial losses around Ptch1 with distal markers retained (R-type). There was a clear dose-dependent increase in the proportion of R-type tumors within the intermediate dose range, indicating that the R-type change is a reliable radiation signature. Importantly, the incidence of R-type tumors increased significantly (P = 0.007) at a dose as low as 50 mGy. Integrated array-comparative genomic hybridization and expression microarray analyses demonstrated that expression levels of many genes around the Ptch1 locus faithfully reflected the signature-associated reduction in genomic copy number. Furthermore, 573 genes on other chromosomes were also expressed differently between S-type and R-type tumors. They include genes whose expression changes during early cerebellar development such as Plagl1 and Tgfb2, suggesting a recapitulation of gene subsets functioning at distinct developmental stages. These findings provide, for the first time, solid experimental evidence for a significant increase in cancer risk by low-dose radiation at diagnostic levels and imply that radiation-induced carcinogenesis accompanies both genomic and gene expression signatures.
Collapse
|
87
|
Ide T, Kamijo Y, Yoshimura K, Ide A, Nishikawa T, Soma K, Mochizuki H. The S-100B levels in the cerebrospinal fluid and clinical prognosis in carbon monoxide poisoning. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
88
|
Yamada N, Nishikawa T. Evolutionary algorithm for optimization of nonimaging Fresnel lens geometry. OPTICS EXPRESS 2010; 18 Suppl 2:A126-A132. [PMID: 20588580 DOI: 10.1364/oe.18.00a126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this study, an evolutionary algorithm (EA), which consists of genetic and immune algorithms, is introduced to design the optical geometry of a nonimaging Fresnel lens; this lens generates the uniform flux concentration required for a photovoltaic cell. Herein, a design procedure that incorporates a ray-tracing technique in the EA is described, and the validity of the design is demonstrated. The results show that the EA automatically generated a unique geometry of the Fresnel lens; the use of this geometry resulted in better uniform flux concentration with high optical efficiency.
Collapse
|
89
|
Katoh H, Nishikawa T, Kimura J, Yamauchi Y, Takabayashi S. Phenotype-based search of natural mutations related to hereditary diseases existing in a closed colony of mice. Exp Anim 2010; 59:183-90. [PMID: 20484851 DOI: 10.1538/expanim.59.183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We attempted to detect natural mutations existing in the Jcl:ICR closed colony of mice which is maintained by random mating. We used ordinary genetic backcrosses to efficiently detect recessive mutations carried by individual mice in the colony. Crosses of DBA/2 females and ICR males were performed to obtain F(1) mice. Four F(1) females randomly selected from each cross were backcrossed to the male parent. More than thirty backcross progeny were obtained from each F(1) female by several deliveries. Phenotypes of the backcross progeny were observed macroscopically at about one month of age. As a result, 18 (26.1%) of 69 Jcl:ICR males carried 11 recessive mutation(s). Based on the phenotypes, the tentative names were abnormal kidney, aplasia of eyelids/hind limb digits, circling, dwarfism, heterotaxy, hind limb paralysis, hydrocephalus, rigidity (or rigor), testicular hypoplasia, tremor, and wobbling. The genes responsible for aplasia of eyelids/hind limb digits and dwarfism were each carried by two males, the genes responsible for hydrocephalus and testicular hypoplasia were each carried by three males and the gene responsible for wobbling by four males. It was strongly suggested that the genes shared by several males originated from an identical mutated gene. Surprisingly, male No. 43 had the responsible genes of abnormal kidneys and testicular hypoplasia, and No. 79 had those of dwarfism and tremor. The results obtained in this study suggest that breeders need to be aware of the presence of natural mutations in their colonies.
Collapse
|
90
|
Fujisaki K, Yokota H, Nakatsuchi H, Yamagata Y, Nishikawa T, Udagawa T, Makinouchi A. Observation of three-dimensional internal structure of steel materials by means of serial sectioning with ultrasonic elliptical vibration cutting. J Microsc 2010; 237:89-95. [PMID: 20055922 DOI: 10.1111/j.1365-2818.2009.03306.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A three-dimensional (3D) internal structure observation system based on serial sectioning was developed from an ultrasonic elliptical vibration cutting device and an optical microscope combined with a high-precision positioning device. For bearing steel samples, the cutting device created mirrored surfaces suitable for optical metallography, even for long-cutting distances during serial sectioning of these ferrous materials. Serial sectioning progressed automatically by means of numerical control. The system was used to observe inclusions in steel materials on a scale of several tens of micrometers. Three specimens containing inclusions were prepared from bearing steels. These inclusions could be detected as two-dimensional (2D) sectional images with resolution better than 1 mum. A three-dimensional (3D) model of each inclusion was reconstructed from the 2D serial images. The microscopic 3D models had sharp edges and complicated surfaces.
Collapse
|
91
|
Sato K, Kimura T, Nishikawa T, Tobe Y, Masaki Y. Neuroprotective effects of a combination of dexmedetomidine and hypothermia after incomplete cerebral ischemia in rats. Acta Anaesthesiol Scand 2010; 54:377-82. [PMID: 19860751 DOI: 10.1111/j.1399-6576.2009.02139.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Dexmedetomidine and hypothermia are known to reduce neuronal injury following cerebral ischemia. We examined whether a combination of dexmedetomidine and hypothermia reduces brain injury after transient forebrain ischemia in rats to a greater extent than either treatment alone. METHODS Thirty-eight male Sprague-Dawley rats were anesthetized with fentanyl and nitrous oxide in oxygen. Four groups were tested: group C (saline 1 ml/kg, temporal muscle temperature 37.5 degrees C); group H (saline 1 ml/kg, 35.0 degrees C); group D (dexmedetomidine 100 microg/kg, 37.5 degrees C); and group DH (dexmedetomidine 100 microg/kg, 35.0 degrees C). Dexmedetomidine or saline was administered intraperitoneally 30 min before ischemia. Cerebral ischemia was produced by right carotid artery ligation with hemorrhagic hypotension (mean arterial pressure 40 mmHg) for 20 min. Neurologic outcome was evaluated at 24, 48, and 72 h after ischemia. Histopathology was evaluated in the caudate and hippocampus at 72 h after ischemia. RESULTS Neurologic outcome was significantly better in the group DH than the group C (P<0.05), whereas it was similar between the group DH and the groups D or H. Survival rate of the hippocampal CA1 neurons was significantly greater in groups D, H, and DH than group C (P<0.05). Histopathologic injury in the caudate section was significantly less in groups H and DH than group C (P<0.05). CONCLUSION The combination of dexmedetomidine and hypothermia improved short-term neurologic outcome compared with the control group, whereas the combination therapy provided comparable neuroprotection with either of the two therapies alone.
Collapse
|
92
|
Dupont L, Viard F, Davis MH, Nishikawa T, Bishop JDD. Pathways of spread of the introduced ascidian Styela clava (Tunicata) in Northern Europe, as revealed by microsatellite markers. Biol Invasions 2010. [DOI: 10.1007/s10530-009-9676-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
93
|
Kokubo T, Kakinuma S, Kobayashi T, Watanabe F, Iritani R, Tateno K, Nishimura M, Nishikawa T, Hino O, Shimada Y. Age dependence of radiation-induced renal cell carcinomas in an Eker rat model. Cancer Sci 2009; 101:616-23. [PMID: 20132221 DOI: 10.1111/j.1349-7006.2009.01456.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Exposure to carcinogens early in life may contribute to cancer development later in life. The amount of radiation exposure children experience during medical procedures has been increasing, so it is important to evaluate the radiation risk of cancer in developing organs. Toward this goal, we assessed the risk of developing renal cell carcinoma using Eker rats as a kidney tumor model. F1 hybrids of male Eker (Tsc2 mutant) and female F344 rats were irradiated with 0.5 or 2 Gy gamma radiation on gestation days 15 and 19, and on postnatal days 5, 20, and 49. At 27 weeks of age, kidneys were examined for proliferative lesions. Preneoplastic lesions such as phenotypically altered tubules increased after postnatal irradiation as a function of age-at-irradiation, and hyperplasia were greatly increased after perinatal and postnatal irradiation. In contrast, development of adenoma and adenocarcinoma were evident in animals irradiated at perinatal ages, being maximal at gestational day 19. The frequency of LOH at the Tsc2 locus was unexpectedly low - 0% (0 of 4) for the unirradiated control, and 17% (6 of 35) for the irradiated group. Irrespective of LOH, the mTOR (mammalian target of rapamycin) pathway, which is negatively regulated by the Tsc1/2 complex, was activated in both benign and malignant lesions, as evidenced by phosphorylation of S6 ribosomal protein and 4E-BP1. This suggests that the wild-type Tsc2 allele may be functionally inactivated. In conclusion, actively growing kidneys in perinatal-aged (F344 x Eker) F1 rats (Tsc2(+/-)) are at risk for radiation-induced malignant transformation of the renal epithelium associated with mTOR activation.
Collapse
|
94
|
Kamisawa T, Shimosegawa T, Okazaki K, Nishino T, Watanabe H, Kanno A, Okumura F, Nishikawa T, Kobayashi K, Ichiya T, Takatori H, Yamakita K, Kubota K, Hamano H, Okamura K, Hirano K, Ito T, Ko SBH, Omata M. Standard steroid treatment for autoimmune pancreatitis. Gut 2009; 58:1504-7. [PMID: 19398440 DOI: 10.1136/gut.2008.172908] [Citation(s) in RCA: 460] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To establish an appropriate steroid treatment regimen for autoimmune pancreatitis (AIP). METHODS A retrospective survey of AIP treatment was conducted in 17 centres in Japan. The main outcome measures were rate of remission and relapse. RESULTS Of 563 patients with AIP, 459 (82%) received steroid treatment. The remission rate of steroid-treated AIP was 98%, which was significantly higher than that of patients without steroid treatment (74%, 77/104; p<0.001). Steroid treatment was given for obstructive jaundice (60%), abdominal pain (11%), associated extrapancreatic lesions except the biliary duct (11%), and diffuse enlargement of the pancreas (10%). There was no relationship between the period necessary to achieve remission and the initial dose (30 mg/day vs 40 mg/day) of prednisolone. Maintenance steroid treatment was given in 377 (82%) of 459 steroid-treated patients, and steroid treatment was stopped in 104 patients. The relapse rate of patients with AIP on maintenance treatment was 23% (63/273), which was significantly lower than that of patients who stopped maintenance treatment (34%, 35/104; p = 0.048). From the start of steroid treatment, 56% (55/99) relapsed within 1 year and 92% (91/99) relapsed within 3 years. Of the 89 relapsed patients, 83 (93%) received steroid re-treatment, and steroid re-treatment was effective in 97% of them. CONCLUSIONS The major indication for steroid treatment in AIP is the presence of symptoms. An initial prednisolone dose of 0.6 mg/kg/day, is recommend, which is then reduced to a maintenance dose over a period of 3-6 months. Maintenance treatment with low-dose steroid reduces but dose not eliminate relapses.
Collapse
|
95
|
Fujiwara T, Nishikawa T, Kataoka K, Matsuura M. [A novel selected segmental inflation technique for anatomical segmentectomy]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2009; 62:1050-1052. [PMID: 19894568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Radical segmentectomy is being performed for small-sized lung cancer. However, it is not always easy to identify the intersegmental border. In this report, we present a new method to recognize it easier by using the nozzle of fibrin sealant spray kit. The diseased segment can be inflated through a pin hole which is placed distal to the ligation at segmental bronchus. In our 20 cases, successful inflation of diseased segment was easily done through thoracoscopic procedure.
Collapse
|
96
|
Nishimura Y, Shibata T, Nakamatsu K, Kanamori S, Koike R, Okubo M, Nishikawa T, Tachibana I, Tamura M, Okumura M. A Two-step Intensity-modulated Radiation Therapy Method for Nasopharyngeal Cancer: The Kinki University Experience. Jpn J Clin Oncol 2009; 40:130-8. [DOI: 10.1093/jjco/hyp136] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
97
|
Goyagi T, Nishikawa T, Tobe Y, Masaki Y. The combined neuroprotective effects of lidocaine and dexmedetomidine after transient forebrain ischemia in rats. Acta Anaesthesiol Scand 2009; 53:1176-83. [PMID: 19388884 DOI: 10.1111/j.1399-6576.2009.01976.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND We investigated whether coadministration of lidocaine and dexmedetomidine would reduce brain injury following transient forebrain ischemia in rats to a greater extent than either drug alone. METHODS Adult male Sprague-Dawley rats were anesthetized with halothane to maintain normocapnia and normoxia. Rats received subcutaneous injection of saline 1 ml/kg, lidocaine 10 mg/kg, dexmedetomidine 3 microg/kg, or lidocaine 10 mg/kg plus dexmedetomidine 3 microg/kg. Thirty minutes after the drug injection, forebrain ischemia was induced by hemorrhagic hypotension and occlusion of the bilateral carotid arteries, and was confirmed by isoelectric EEG. At the end of 10-min ischemia, rats were reperfused. The same dose of drugs was administered 3, 24, and 48 h after ischemia. Neurological examination was done at 1, 2, and 7 days after ischemia. Seven days after ischemia, the brain was stained with hematoxylin and eosin. We counted ischemic cells in the CA1 hippocampal region, striatum, and cerebral cortex. We also measured extracellular glutamate and norepinephrine concentration in hippocampal CA1 in the four groups. RESULTS As compared with saline-treated rats, rats receiving dexmedetomidine plus lidocaine showed less than neurological deficit scores at 2 and 7 days after ischemia, and had less ischemic cells in the CA1 region. However, administration of dexmedetomidine plus lidocaine did not alter the area under the glutamate concentration curve and norepinephrine concentration during ischemia in the CA1 region, compared with saline-treated rats. CONCLUSIONS Our results suggest coadministration of lidocaine and dexmedetomidine improves the neurological outcome without alteration of glutamate and norepinephrine concentrations during forebrain ischemia in rats.
Collapse
|
98
|
Nishikawa T, Okamoto Y, Tanabe T, Shinkoda Y, Kodama Y, Higashi M, Hirano H, Arita K, Kawano Y. Unexpectedly high AUC levels in a child who received intravenous busulfan before stem cell transplantation. Bone Marrow Transplant 2009; 45:602-4. [PMID: 19684630 DOI: 10.1038/bmt.2009.195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
99
|
Ebihara T, Sugiura M, Masuda M, Nishikawa T. Successful treatment of sporotrichosis with itraconazole. J DERMATOL TREAT 2009. [DOI: 10.3109/09546639109089052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
100
|
Isogai E, Isogai H, Kimura K, Nishikawa T, Fujii N, Benno Y. Effect of Japanese Green Tea Extract on Canine Periodontal Diseases. MICROBIAL ECOLOGY IN HEALTH AND DISEASE 2009. [DOI: 10.3109/08910609509141383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|