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Abstract
Haemophilia B is extremely rare in females and so far 20 cases have been reported. A 9-year-old girl with severe haemophilia symptoms is described, who shows a very low level of factor IX activity (1.5%) and antigen (less than 10%), normal XX female karyotype and negative family history of bleeding tendency or consanguinity. This case is probably the fourth report of sporadic female haemophilia B without chromosomal aberration and the first one with quantitative analysis by immunoradiometric assay and enzyme-linked immunosorbent assay of factor IX antigen. This very low factor IX level and severe bleeding tendency of the patient would be consistent with the homozygous state, but since a double mutation is extremely rare the patient's laboratory findings can be more easily explained by extreme lyonization of the normal X-chromosome of a heterozygous carrier.
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202
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Satake H, Aoyama M, Kawada T, Sekiguchi T, Sakai T, Fujie M, Satoh N. Neuropeptides and their receptors of the protochordate, Ciona intestinalis: the evolutionary origin of vertebrate neuropeptides. Acta Biol Hung 2008; 59 Suppl:237-9. [PMID: 18652397 DOI: 10.1556/abiol.59.2008.suppl.33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Ci-TK and Ci-TK-R are authentic tachykinin (TK) and TK receptor isolated from a protochordate, Ciona intestinalis. In this study, we investigated a novel function of TK as an enhancer of oocyte growth. Ci-TK-R is expressed specifically in the Ciona vitellogenic oocytes. Moreover, administration of Ci-TK to the Ciona ovary resulted in upregulation of gene expression and enzymatic activity of several proteases. Moreover, maturation of the Ciona oocytes from the vitellogenic stage to the post-vitellogenic stage was induced in the presence of Ci-TK, which was completely blocked by addition of protease inhibitors.
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Affiliation(s)
- H Satake
- Suntory Institute for Bioorganic Research, Osaka, Japan.
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203
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Abstract
Gonadotropin-releasing hormone (GnRH) is a ten-amino acid peptide hormone that plays pivotal roles in reproduction in vertebrates and octopus. Recently, six GnRH forms (t-GnRH-3-8) and four GnRH receptor subtypes (Ci-GnRHR-1-4) were identified in the protochordate, Ciona intestinalis. In this study, we show the functional modulation of Ci-GnRHR-1 via heterodimerization with the orphan receptor subtype, Ci-GnRHR-4. The dimerization between Ci-GnRHR-1 and R-4 was detected by co-immunoprecipitation and immunoblot analysis. Binding assays confirmed the binding of t-GnRHs to Ci-GnRHR-1 but not to R-4, and verified no alternation in ligand-binding affinity between Ci-GnRHR-1 homodimer and Ci-GnRHRI&4 heterodimer. The heterodimer was found to stimulate the elevation of intracellular calcium, time-extension of ERK phosphorylation, and up-regulation of cell proliferation, all in a ligand specific manner, compared with the Ci-GnRHR-1 homodimer. In combination, these results indicated that Ci-GnRHR-4 is not an inactive receptor, but a modulatory factor for Ci-GnRHR-1 in C. intestinalis.
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Affiliation(s)
- T Sakai
- Suntory Institute for Bioorganic Research, Osaka, Japan.
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204
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Kawakita T, Matsui T, Inoue Y, Sakai T, Takemoto S, Nagakura S, Hidaka M, Kiyokawa T, Kawano F. Extramedullary involvement correlates with late relapse after allogenic hematopoietic cell transplantation for acute leukemia. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.18005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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205
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Kamigaki T, Murakami M, Matsumoto I, Toyama H, Fujita T, Takase S, Sakai T, Ajiki T, Ku Y, Hishikawa Y, Kuroda Y. A phase I study of proton beam therapy for locally advanced pancreatic cancer: Analysis of feasibility and anti-tumor effect. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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206
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Sakai T, Saku K. BENEFICIAL EFFECT IN HEART RATE VARIABILITY AND IGF-I AFTER TREATMENT WITH ATORVASTATIN IN HYPERCHOLESTEROLEMIC PATIENTS. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70797-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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207
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Nishibe A, Kijima Y, Fukunaga M, Nishiwaki N, Sakai T, Nakagawa Y, Hata T. Increased isoprostane content in coronary plaques obtained from vulnerable patients. Prostaglandins Leukot Essent Fatty Acids 2008; 78:257-63. [PMID: 18460418 DOI: 10.1016/j.plefa.2008.03.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 02/08/2008] [Accepted: 03/03/2008] [Indexed: 10/22/2022]
Abstract
8-Iso-prostaglandin F(2)(alpha) (8-iso-PGF(2)(alpha)), a representative isoprostane, is a reliable biomarker for enhanced oxidant stress in vivo. Its urinary excretion has been proposed as a risk marker in patients with coronary heart disease. Isoprostane content has not yet been well elucidated so far in human coronary plaques. The aim of this study was to evaluate content of immunoreactive 8-iso-PGF(2)(alpha) in directional coronary atherectomy (DCA) specimens from patients with coronary heart diseases. Twenty-seven patients with stable angina pectoris (SAP) and 8 vulnerable patients (5 patients with unstable angina pectoris and 3 with recent myocardial infarction) were subjected to DCA. The specimens from SAP consisted of 14 de novo and 13 restenotic lesions, whereas those from the vulnerable patients were all de novo lesions. Total 8-iso-PGF(2)(alpha) content in the DCA specimens from the vulnerable patients was significantly greater than that from patients with SAP (5.48 (2.70-10.43) versus 2.38 (1.19-4.32)ng/g tissue, median (interquartile range), P<0.05). There was no significant difference in total 8-iso-PGF(2)(alpha) content between de novo and restenotic lesions from patients with SAP (3.25 (1.48-5.05) versus 1.57 (0.62-2.47)ng/g tissue, respectively, P=0.895). Total 8-iso-PGF(2)(alpha) content in apparently normal peripheral artery specimens was only 0.34 (0.26-0.46)ng/g tissue. In conclusion, 8-iso-PGF(2)(alpha) was enriched in the DCA specimens from vulnerable patients, suggesting a crucial role of free radicals in formation of vulnerable plaques and a putative benefit of anti-oxidant therapy on these patients.
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Affiliation(s)
- A Nishibe
- Department of Cardiology, Higashi-osaka City General Hospital, Osaka, Japan
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208
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Enya J, Togawa M, Takeuchi T, Yoshida S, Tsushima S, Arie T, Sakai T. Biological and phylogenetic characterization of Fusarium oxysporum complex, which causes yellows on Brassica spp., and proposal of F. oxysporum f. sp. rapae, a novel forma specialis pathogenic on B. rapa in Japan. Phytopathology 2008; 98:475-483. [PMID: 18944198 DOI: 10.1094/phyto-98-4-0475] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Although the causal agent of yellows of Brassica rapa (turnip, pak choi, and narinosa) in Japan was reported in 1996 to be Fusarium oxysporum f. sp. conglutinans, this classification has remained inconclusive because of a lack of detailed genetic and pathogenic studies. Therefore, we analyzed the taxonomic position of this organism using Japanese isolates of F. oxysporum complex obtained from diseased individuals of various B. rapa subspecies. Phylogenetic analyses using partial sequences of the rDNA intergenic spacer region and the mating-type gene (MAT1-1-1alpha-box) showed that B. rapa and cabbage isolates belong to different monophyletic clades that separated at early evolutionary stages. Additionally, correlations were observed between the molecular phylogeny and the vegetative compatibility groups. Isolates from turnip, komatsuna, and narinosa (B. rapa group) did not show pathogenicity against cabbage or broccoli (B. oleracea group), although they caused severe symptoms on their original host species. In contrast, cabbage isolates had significantly higher (P = 0.05) virulence on B. oleracea than on B. rapa crops. Our results indicate that F. oxysporum complex isolates from B. rapa and B. oleracea are not only phylogenetically distinct but also differ in host specificity. Therefore, we propose a novel forma specialis, F. oxysporum f. sp. rapae, which causes yellows on B. rapa, including turnip, komatsuna, pak choi, and narinosa.
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Affiliation(s)
- J Enya
- Research and Development Division, Mikado Kyowa Seed Co., Ozawa, Chiba, Japan
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209
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Kitagawa M, Okada M, Koie H, Kanayama K, Sakai T. Magnetic resonance imaging and computed tomography appearance of chronic subdural haematoma in a dog. Aust Vet J 2008; 86:100-1. [PMID: 18304047 DOI: 10.1111/j.1751-0813.2007.00203.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M Kitagawa
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan.
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210
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Nishii T, Tanaka H, Sugano N, Sakai T, Hananouchi T, Yoshikawa H. Evaluation of cartilage matrix disorders by T2 relaxation time in patients with hip dysplasia. Osteoarthritis Cartilage 2008; 16:227-33. [PMID: 17644363 DOI: 10.1016/j.joca.2007.06.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2006] [Accepted: 06/05/2007] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Early detection of cartilage disorder in dysplastic hips is important in predicting subsequent progression of osteoarthritis and determining the appropriate timing of osteotomy surgery. We assessed the feasibility of T2 assessment using magnetic resonance (MR) imaging at 3T for evaluating early changes in the acetabular and femoral cartilages for patients with hip dysplasia. METHODS Sagittal T2 maps of the hip were obtained using 3T MR imaging in 10 normal volunteers (14 hips) and in 23 patients (26 hips) with hip dysplasia at pre-arthritic stage (without osteoarthritis) or early-arthritic stage (with osteoarthritis at the Kellgren-Lawrence system of grade 1 or 2). T2 values and the visual appearance of T2 mapping, including gradient T2, low T2, and high T2 patterns, were compared at the superior zones of the acetabular and femoral cartilages among the normal, pre-arthritic, and early-arthritic groups. RESULTS There were no significant differences in T2 values for both cartilages among the three groups. Regarding the visual appearance of T2 mapping for the acetabular cartilage, all hips in the normal group showed a gradient T2 pattern, while the pre-arthritic groups included six hips (43%) with a low T2 pattern, and the early-arthritic group showed either a low T2 pattern (33%) or a high T2 pattern (67%). The frequency of the gradient T2 pattern was significantly lower for dysplastic hips than for normal hips, in the acetabular and femoral cartilages (P<0.05). CONCLUSIONS This preliminary study demonstrated the clinical feasibility of T2 assessment of hip cartilage using 3T MR imaging. T2 mapping classification may enable the early detection of osteoarthritic degeneration and the detection of developmental disorders of cartilage matrix in patients with hip dysplasia.
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Affiliation(s)
- T Nishii
- Department of Orthopaedic Surgery, Osaka University Medical School E3, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
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211
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Sairyo K, Sakai T, Higashino K, Hirao B, Katoh S, Yasui N. Minimally Invasive Excision of Lumbar Epidural Lipomatosis Using a Spinal Endoscope. ACTA ACUST UNITED AC 2008; 51:43-6. [DOI: 10.1055/s-2007-1004569] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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212
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Kitagawa M, Ueno H, Watanabe S, Igarashi O, Uzuka Y, Kanayama K, Sakai T. Clinical improvement in two dogs with hydrocephalus and syringohydromyelia after ventriculoperitoneal shunting. Aust Vet J 2008; 86:36-42. [DOI: 10.1111/j.1751-0813.2007.00247.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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213
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Higashino K, Sairyo K, Katoh S, Sakai T, Kosaka H, Yasui N. Minimally invasive technique for direct repair of the pars defects in young adults using a spinal endoscope: a technical note. ACTA ACUST UNITED AC 2007; 50:182-6. [PMID: 17882757 DOI: 10.1055/s-2007-982511] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Pars defect (spondylolysis) of the lumbar spine can cause chronic low back pain, and it sometimes requires surgical intervention. Direct repair is selected for the surgery if young adult patients do not present significant disc degeneration and lumbar instability. In order to lessen damages of back muscles during surgery, we added the use of a spinal endoscope to the "Buck's screwing procedure" the direct repair. There are four steps in this procedure: 1) identification of the defect, 2) curettage (refresh) of the defect, 3) percutaneous insertion of the annulated screws and 4) cancellous bone grafting. All these steps can be done endoscopically. We treated 3 young adults--a baseball player, a professional cycle-racer and a sculptor--using this endoscopic procedure. There were no complications during or after the operation. Union was obtained in all defects within 3 months, and they returned to their previous activities within 6 months after the surgery.
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Affiliation(s)
- K Higashino
- Department of Orthopedics, The University of Tokushima, Tokushima, Japan
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214
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Tonogai I, Sairyo K, Higashino K, Sakai T, Katoh S, Yasui N. Minimally invasive endoscopic removal of a herniated nucleus pulposus that had migrated to the S1 nerve root foramen. ACTA ACUST UNITED AC 2007; 50:173-7. [PMID: 17882755 DOI: 10.1055/s-2007-982510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In this report, we described an adult case with a lumbar herniated nucleus pulposus that had migrated to the S1 nerve root foramen from L5-S1 disc space. Endoscopically, the migrated mass was successfully removed after laminectomy at the S1 with a small skin incision of 20 mm in length. Unlike the other levels, the intraforaminally migrated mass along the S1 root can be excised without any removal of the facet joints; therefore, additional spinal fusion is not necessary. Thus, an S1 foraminal migrated mass can be a good surgical candidate for minimally invasive endoscopic surgery.
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Affiliation(s)
- I Tonogai
- Department of Orthopedics, The University of Tokushima School of Medicine, Tokushima, Japan
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215
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Abstract
Thyroid-stimulating hormone (TSH)-producing cells (TSH cells), which account for a large fraction of the cells in the rat pars tuberalis (PT), have been found to express MT1 melatonin receptor and mammalian clock genes at high densities. Although these findings suggest that TSH production in the rat PT is regulated by melatonin and/or the biological clock, there have been no studies focusing on the diurnal change and regulation mechanism of TSH production in the rat PT. Therefore, in the present study, we examined diurnal changes of in TSH beta and alpha-glycoprotein subunit (alpha GSU) mRNA expression and TSH immunoreactivity (-ir) in the rat PT, and also examined the relationship between melatonin and TSH production in vivo. Both TSH beta mRNA expression and alpha GSU mRNA expression in the PT showed diurnal variations: the expression levels were lowest at the light phase [Zeitgeber time (ZT)4] and high at the dark phase (ZT12 and ZT20). TSH-ir in the PT showed the lowest level at ZT4, as was found for mRNA expression. Interestingly, TSH-ir, which was confined to the Golgi apparatus at ZT4, spread to the cytoplasm, and most of the TSH cells in the PT were uniformly immunostained in the cytoplasm at ZT20. Despite the fact that chronic administration of melatonin suppressed TSH beta and alpha GSU mRNA expression, TSH-ir in the PT was significantly enhanced. These findings results clearly show that there are diurnal changes in TSH expression and accumulation in rat PT-TSH cells and suggest that these fluctuations are regulated by melatonin.
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Affiliation(s)
- S Aizawa
- Graduate School of Science and Engineering Division of Life Science, Area of Regulatory Biology, Saitama University, Saitama, Japan
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216
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Kobayashi Y, Sato G, Kato M, Itou T, Cunha EMS, Silva MV, Mota CS, Ito FH, Sakai T. Genetic diversity of bat rabies viruses in Brazil. Arch Virol 2007; 152:1995-2004. [PMID: 17680325 DOI: 10.1007/s00705-007-1033-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2007] [Accepted: 06/14/2007] [Indexed: 11/27/2022]
Abstract
Thirty-three Brazilian bat rabies viruses (RVs) were studied by sequence analysis and were compared against sequences of bat-related RVs from other regions of the Americas. Phylogenetic analysis revealed that bat-related RVs formed several monophyletic lineages and that these were associated with bat species. Brazilian bat RVs were found to include nine major lineages, one of which grouped with RVs isolated from Lasiurus spp. from different regions of the Americas. These results suggest that there is considerable diversity among Brazilian bat RV variants and that some of these RV variants may be associated with bats from other countries.
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Affiliation(s)
- Y Kobayashi
- Nihon University Veterinary Research Center, Kanagawa, Japan
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217
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Sakai T, Li S, Tanioka Y, Goto T, Tanaka T, Matsumoto I, Tsujimura T, Fujino Y, Suzuki Y, Kuroda Y. Intraperitoneal injection of oxygenated perfluorochemical improves the outcome of intraportal islet transplantation in a rat model. Transplant Proc 2007; 38:3289-92. [PMID: 17175252 DOI: 10.1016/j.transproceed.2006.10.183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Indexed: 10/23/2022]
Abstract
A 50% to 75% early graft loss upon engraftment has been suggested to in intraportal islet transplantation (IPIT). Hypoxia in the portal vein contributes to graft loss in immediately posttransplantation. Herein we examined the effect on the outcome of IPIT of intraperitoneal oxygenated perfluorochemical (PFC) as an oxygen carrier. Isolated Lewis rat islets were transplanted into the portal vein of a chemically induced diabetic syngeneic rat. First, 1500 IEQ was determined to be the optimal dose in this study. When oxygenated PFC (group 1) was intraperitoneally injected following IPIT of 1500 IEQ, the success rate of transplantation was 5/6, in contrast to 1/6 when PFC with no oxygen was injected (group 2) and 1/6 in IPIT without PFC, respectively. The area under the glucose profile curve on intraperitoneal glucose tolerance tests on posttransplant day 28 in group 1 was significantly smaller than that for group 2. In conclusion, intraperitoneal oxygenated PFC improved the outcome of IPIT.
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Affiliation(s)
- T Sakai
- Department of Gastroenterological Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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218
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219
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Sakai T, Repko BM, Griffith BP, Waters JH, Kameneva MV. I.V. infusion of a drag-reducing polymer extracted from aloe vera prolonged survival time in a rat model of acute myocardial ischaemia †. Br J Anaesth 2007; 98:23-8. [PMID: 17098722 DOI: 10.1093/bja/ael307] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND I.V. infusion of drag-reducing polymers (DRPs) has been shown to improve survival time in animals subjected to haemorrhagic shock. We hypothesized that DRPs might prolong survival time in rats following acute myocardial ischaemia (AMI). METHODS Sixteen adult male rats were anaesthetized and mechanically ventilated. An i.v. infusion of either Dextran-40 2.5% (Control, n=8) or Dextran-40 2.5% containing 50 microg ml(-1) of an aloe vera-based DRP (DRP, n=8) was initiated at 3.5 ml h(-1). The left anterior descending coronary artery was ligated. Blood pressure, skin-tissue perfusion, and heart rate were monitored and arterial blood samples were analysed. RESULTS The mortality at 60 min following coronary ligation was 0% in the DRP group vs 50% in the control group (P=0.025). DRP-treated animals maintained higher mean arterial pressure [60.9 (5.1) vs 47.5 (5.1) mm Hg, P=0.004] and tissue perfusion [4.2 (3.4) vs 1.2 (0.5) TPU, P=0.029]. The DRP group trended towards better acid-base status with base excess [-5.0 (1.7) vs -8.1 (5.1) mmol litre(-1), P=0.083] and pH [7.42 (0.07) vs 7.35 (0.02), P=0.03]. CONCLUSIONS Administration of nanomolar concentrations of aloe vera-based DRP prolonged survival time in animals with AMI. DRPs may offer a novel method to treat organ/tissue hypoperfusion.
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Affiliation(s)
- T Sakai
- Department of Anesthesiology, University of Pittsburgh Medical Center, University of Pittsburgh Pittsburgh, PA, USA
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220
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Nagamine T, Nakazato K, Suzuki K, Kusakabe T, Sakai T, Oikawa M, Satoh T, Kamiya T, Arakawa K. Analysis of tissue cadmium distribution in chronic cadmium-exposed mice using in-air micro-PIXE. Biol Trace Elem Res 2007; 117:115-26. [PMID: 17873397 DOI: 10.1007/bf02698088] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 07/18/2006] [Accepted: 07/30/2006] [Indexed: 10/22/2022]
Abstract
This study undertook the analysis of tissue cadmium (Cd) distribution using in-air micro-particle-induced X-ray emission (PIXE) and the examination of the involvement of metal ions in parenteral Cd toxicity. A mouse was injected intraperitoneally with 3 mg/kg body weight of CdCl2 thrice weekly. After 27 wk, the liver and kidney were excised and fixed in 10% formalin solution for 4 h and then embedded in paraffin. Thin paraffin sections were used to analyze trace elements with in-air micro-PIXE and to examine metallothionein protein and histological changes. Cd distribution was determined by micro-PIXE in the liver and renal cortex of the Cd-exposed mouse, and the net Cd count was higher in the liver than in the renal cortex. The net iron (Fe) count was higher in the liver of the Cd-exposed mouse compared to the control, and an opposite tendency was observed in the renal cortex. Wide cellular Cd distribution was demonstrated in the liver and renal cortex of the chronic Cd-exposed mouse compared to the control. Metallothionein staining was increased by chronic exposure to Cd both in the liver and kidney, and nephrotoxicity was more apparent than hepatotoxicity. The modification of tissue Fe and calcium distribution by an intraperitoneal injection of Cd might be involved in Cd-induced toxicity.
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Affiliation(s)
- T Nagamine
- Faculty of Medicine, Course of Health Science, Gunma University Graduate School of Medical Science, 3-39-15 Showamachi, Maebashi, Gunma, 371-8514, Japan
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221
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Abastari, Sakai T, Sembokuya H, Kubouchi M, Tsuda K. The reciprocal influence between ion transport and degradation of PA66 in acid solution. Polym Degrad Stab 2006. [DOI: 10.1016/j.polymdegradstab.2006.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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222
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Affiliation(s)
- M Kitagawa
- Department of Preventive Medicine and Animal Health, Nihon University School of Veterinary Medicine, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan
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223
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Iida S, Aikawa T, Kishino M, Sakai T, Nakano Y, Okura M, Kogo M. Spheric mass beneath the alar base: MR images of nasolabial cyst and schwannoma. AJNR Am J Neuroradiol 2006; 27:1826-9. [PMID: 17032851 PMCID: PMC7977907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report 2 cases of nasolabial cyst and a case of schwannoma beneath the alar base that required a differential diagnosis because of clinical features and MR images that resembled the nasolabial cyst. The morphologic analysis on MR images revealed the characteristic appearance of the nasolabial cyst, and the sagittal MR image may be most helpful for diagnosing this rare disease.
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Affiliation(s)
- S Iida
- The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
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224
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Abstract
A 7-year-old female cross-breed dog was brought to Nihon University Animal Medical Center for investigation of tetraplegia. Lameness in the pelvic limbs, that had developed 2 weeks previously, had progressed to tetraplegia. On magnetic resonance imaging of the spinal cord, isointensity was detected from C2 to C4 and T12 to T13, isointensity and hyperintensity were intermingled from L3 to L4, and hyperintensity was detected from L5 to L7 by T1-weighted imaging. On T2-weighted imaging, hyperintensity was detected in all regions described above. The dog recovered from anaesthesia, but died during the day from systemic bleeding as the result of a coagulopathy of unknown aetiology. Histopathological examination revealed haematomyelia in these regions of the spinal cord. This is the first report of magnetic resonance imaging findings of haematomyelia in canine spontaneous systemic haemorrhage. It appeared that the differences in the findings of T1-weighted imaging along the spinal regions reflected time-lags in the occurrence of bleeding.
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Affiliation(s)
- M Okada
- Pet Clinic ANIHOS, Tokyo, Japan
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225
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Kohsaka S, Sakai T, Kohsaka M. P30.45 Transient but sustained activation of the brainstem triggers K-complex. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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226
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Fukunishi Y, Sakai T, Sasaki K, Izawa S, Xiong AK. Feedback control of instability waves in a transitional flat-plate boundary layer. J Vis (Tokyo) 2006. [DOI: 10.1007/bf03181675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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227
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Yokoyama H, Yoneda M, Abe M, Sakai T, Sagoh T, Adachi Y, Kondo T. Internal carotid artery vasospasm syndrome: demonstration by neuroimaging. J Neurol Neurosurg Psychiatry 2006; 77:888-9. [PMID: 16788018 PMCID: PMC2117474 DOI: 10.1136/jnnp.2005.079798] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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228
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Inui A, Sairyo K, Katoh S, Higashino K, Sakai T, Shiiba M, Yasui N. Extruded lumbar osseous endplate causing long-term radiculopathy in an adult: an endoscopic excision. ACTA ACUST UNITED AC 2006; 49:55-7. [PMID: 16547884 DOI: 10.1055/s-2005-919165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
In this report, we described an adult case that had a long-term radiculopathy due to an extruded osseous endplate of the lumbar spine at the L5-S1 intervertebral disc level. The osseous material inside the extruded material was not absorbed, and it had continued compressing the nerve root for one year. Endoscopically, the bony fragment was successfully removed. After the surgery, the patient's symptom disappeared, and neurological deficits became normalized. In conclusion, we propose that surgical intervention should be taken into account for the treatment of HNP, when the extruded material contains bony fragment such as osseous endplate.
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Affiliation(s)
- A Inui
- Department of Orthopedics, The University of Tokushima School of Medicine, Tokushima, Japan
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229
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Sato G, Kobayashi Y, Shoji Y, Sato T, Itou T, Ito FH, Santos HP, Brito CJC, Sakai T. Molecular epidemiology of rabies from Maranhão and surrounding states in the northeastern region of Brazil. Arch Virol 2006; 151:2243-51. [PMID: 16773238 DOI: 10.1007/s00705-006-0770-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2006] [Accepted: 03/27/2006] [Indexed: 10/24/2022]
Abstract
Although many outbreaks of rabies have been reported in northern Brazil, few epidemiological studies of these outbreaks have been undertaken. In this study, molecular epidemiological analyses were performed using 41 rabies virus samples isolated in the Maranhão (MA), Pará (PA), and Tocantins (TO) states of northeastern Brazil. A 599-bp region of the glycoprotein (G) gene was first amplified from each sample by RT-PCR, then sequenced and subjected to phylogenetic analysis. A phylogenetic tree divided the 41 isolates into two clades: Clade I was associated with terrestrial carnivores and Clade II was associated with vampire bats. The Clade I isolates were further sub-divided into two groups. The first group was closer to carnivore isolates that predominate in central Brazil, whereas the second group more closely resembled wild fox isolates from the northeastern coastal state of Paraíba (PB). MA isolates of Clade II formed an entirely separate group. These results demonstrate that bat- and dog-transmitted rabies occur in northwestern Brazil.
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Affiliation(s)
- G Sato
- Nihon University Veterinary Research Center, Nihon University, Fujisawa, Kanagawa, Japan
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230
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231
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Higashino K, Katoh S, Sairyo K, Sakai T, Kosaka H, Yasui N. Preservation of C7 spinous process does not influence the long-term outcome after laminoplasty for cervical spondylotic myelopathy. Int Orthop 2006; 30:362-5. [PMID: 16738851 PMCID: PMC3172770 DOI: 10.1007/s00264-005-0062-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Accepted: 11/15/2005] [Indexed: 10/24/2022]
Abstract
Axial pain is one of the major complications after laminoplasty, and preservation of C7 spinous process during the procedure can reduce the axial pain. However, it has not been elucidated whether laminoplasty preserving the C7 spinous process can maintain neurological improvement for a long time. The purpose of our retrospective study was to investigate the long-term neurological outcome after open-door laminoplasty preserving the C7 spinous process for cervical spondylotic myelopathy (CSM). Clinical and radiological outcomes were analysed in 42 patients who underwent open-door laminoplasty preserving C7 spinous process and followed up for more than 5 years. Neurological function was evaluated by means of the Japanese Orthopaedic Association (JOA) scoring system for cervical myelopathy. Axial pain was assessed using a visual analog scale (VAS) at the last examination. Alignment and motion of the cervical spine were measured from radiographs, and magnetic resonance imaging (MRI) was used to evaluate postoperative compression at C7. The mean JOA score was 9.4 before surgery and 12.0 at the latest follow-up. The mean VAS score in 26 patients score was 9.7/100. No compression of the spinal cord was observed in any MRI at the latest follow-up. Preservation of the C7 spinous process does not influence the long-term outcome of CSM after laminoplasty. Although we did not have a comparative group, the procedure described here should be considered as the solution.
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Affiliation(s)
- K. Higashino
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - S. Katoh
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - K. Sairyo
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - T. Sakai
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - H. Kosaka
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - N. Yasui
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
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232
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Tanooka M, Takiuchi H, Sakai T, Nasada T, Hirayama S, Shima H, Pande AR, Nakao N. [New CT program simulating kidney displacement during retroperitoneal laparoscopic nephrectomy]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2006; 62:713-5. [PMID: 16767829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A total of 12 patients with malignant localized renal or ureteral neoplasms underwent multi-slice computed tomography. Imaging data were sent to the dedicated workstation to create volume rendering and virtual laparoscopic images of the kidney which was displaced ventrally with retroperitoneal balloon. These findings were compared with video images obtained during retroperitoneal laparoscopic nephrectomy. The kidney displacement simulator depicted all renal arteries (100% sensitivity) and 13 of 14 renal veins (93% sensitivity). Hilar anatomy, including the tumor, major vessels and their relationships were visualized as in the actual laparoscopic views. The desired portions of major vessels as well as the left adrenal and gonadal veins visualized with this system completely corresponded with the actual laparoscopic images during surgery. The kidney displacement simulator is useful to foresee desired portions of major vessels and branched small vessels such as the adrenal or gonadal veins in advance of surgery. It is thus able to guide surgeons and reduce operative risks and possible complications.
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Affiliation(s)
- M Tanooka
- Department of Clinical Radiology, The Hospital of Hyogo College of Medicine
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233
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Higashino K, Matsui Y, Yagi S, Takata Y, Goto T, Sakai T, Katoh S, Yasui N. The alpha2 type IX collagen tryptophan polymorphism is associated with the severity of disc degeneration in younger patients with herniated nucleus pulposus of the lumbar spine. Int Orthop 2006; 31:107-11. [PMID: 16586133 PMCID: PMC2267527 DOI: 10.1007/s00264-006-0117-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2006] [Revised: 01/20/2006] [Accepted: 02/10/2006] [Indexed: 10/24/2022]
Abstract
Tryptophan alleles in COL9A2 (Trp2) and COL9A3 (Trp3) have been linked to lumbar disc diseases in the Finnish population. Although such diseases consist of various pathogenetically different conditions, detailed analysis of each has not been well documented. The aim of this study was to clarify whether the collagen IX tryptophan alleles influence the symptomatic degeneration of the lumbar disc in Japanese patients with herniated nucleus pulposus. We performed a prospective study of 84 patients who underwent lumbar discectomy. The degree of disc degeneration was evaluated by magnetic resonance images in relation to the collagen IX genotype. Twenty patients (21.4%) had the Trp2 allele and no patients had the Trp3 allele. Patients under 40 years with the Trp2 allele showed more severe disc degeneration at the surgical level than did those without the Trp2 allele (odds ratio 6.00, P=0.043). In contrast, patients aged 40 years or over did not show significant association between disc degeneration and collagen IX genotype. Our results suggest that the Trp2 allele is an age-dependent risk factor for the severity of disc degeneration in younger patients with symptomatic herniated nucleus pulposus of the lumbar spine.
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Affiliation(s)
- K. Higashino
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Y. Matsui
- Department of Orthopedic Surgery, Osaka University Medical School, 2-2, Yamadaoka, Suita, Osaka 565-0871 Japan
| | - S. Yagi
- Department of Orthopedic Surgery, Takamatsu Red Cross Hospital, Takamatsu, Japan
| | - Y. Takata
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - T. Goto
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - T. Sakai
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - S. Katoh
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - N. Yasui
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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234
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Sakai T, Kimura Y, Koyanagi M, Sudo Y, Hasegawa Y, Matsukawa M. [Mediastinal emphysema after a punch on the back; report of a case]. Kyobu Geka 2006; 59:340-3. [PMID: 16613155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A 19-year-old man was punched on the back, and anterior chest pain appeared about 3 hours after injury. The patient was consulted a physician complaining of anterior chest pain. On chest X-ray, mediastinal emphysema was suspected, and transferred to our hospital. Chest computed tomography (CT) revealed mediastinal emphysema. On esophageal radiography and bronchofiberscopy, no abnormal findings were detected. Conservative therapy was conducted, and symptoms had gradually improved. On the 8th hospital day, mediastinal emphysema was improved on chest CT. The patient was discharged on the 10th hospital day. The most frequent cause of mediastinal emphysema after trauma is traffic or downfall accident, and no report on this condition after the punch on the back was found.
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Affiliation(s)
- T Sakai
- Department of Surgery, Hirosaki City Hospital, Japan
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235
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Payne TR, Oshima H, Sakai T, Ling Y, Gharaibeh B, Cummins J, Huard J. Regeneration of dystrophin-expressing myocytes in the mdx heart by skeletal muscle stem cells. Gene Ther 2006; 12:1264-74. [PMID: 15843810 DOI: 10.1038/sj.gt.3302521] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cell transplantation holds promise as a potential treatment for cardiac dysfunction. Our group has isolated populations of murine skeletal muscle-derived stem cells (MDSCs) that exhibit stem cell-like properties. Here, we investigated the fate of MDSCs after transplantation into the hearts of dystrophin-deficient mdx mice, which model Duchenne muscular dystrophy (DMD). Transplanted MDSCs generated large grafts consisting primarily of numerous dystrophin-positive myocytes and, to a lesser degree, dystrophin-negative non-myocytes that expressed an endothelial phenotype. Most of the dystrophin-positive myocytes expressed a skeletal muscle phenotype and did not express a cardiac phenotype. However, some donor myocytes, located at the graft-host myocardium border, were observed to express cardiac-specific markers. More than half of these donor cells that exhibited a cardiac phenotype still maintained a skeletal muscle phenotype, demonstrating a hybrid state. Sex-mismatched donors and hosts revealed that many donor-derived cells that acquired a cardiac phenotype did so through fusion with host cardiomyocytes. Connexin43 gap junctions were not expressed by donor-derived myocytes in the graft. Scar tissue formation in the border region may inhibit the fusion and gap junction connections between donor and host cells. This study demonstrates that MDSC transplantation warrants further investigation as a potential therapy for cardiac dysfunction in DMD.
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Affiliation(s)
- T R Payne
- Department of Bioengineering, University of Pittsburgh, PA, USA
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236
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Shikama Y, Mizukami H, Sakai T, Yagihashi N, Okamoto K, Yagihashi S. Spindle cell metaplasia arising in thyroid adenoma: characterization of its pathology and differential diagnosis. J Endocrinol Invest 2006; 29:168-71. [PMID: 16610245 DOI: 10.1007/bf03344092] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Spindle cell metaplasia in thyroid adenoma or carcinoma is rare and its pathological features are not well characterized. Distinction of this entity from medullary or anaplastic carcinoma has an important clinical implication. We encountered a case of thyroid follicular adenoma associated with spindle cell metaplasia. It showed "tumor in tumor appearance" and neoplastic spindle cells were positive for thyroglobulin, thyroid transcription factor-1, vimentin and focally chromogranin A and somatostatin (SS). MIB-1 index was <1%. Ultrastructure of the spindle cells was reminiscent of follicular cell origin. From the findings from our case, spindle cell metaplasia appears to be a benign clinical entity, suggestive of multidirectional differentiation of follicular cells.
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Affiliation(s)
- Y Shikama
- Department of Pathology, Hirosaki University School of Medicine, Hirosaki, Japan.
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237
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Endo K, Yamamoto T, Shibata Y, Tsuboi K, Matsumura A, Kumada H, Yamamoto K, Sakai T, Sato T, Oikawa M, Ohara Y, Ishii K. Demonstration of Inter- and Intracellular Distribution of Boron and Gadolinium Using Micro-Proton-Induced X-Ray Emission (Micro-PIXE). Oncol Res 2006; 16:57-65. [PMID: 16898266 DOI: 10.3727/000000006783981198] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Micro-proton-induced X-ray emission (Micro-PIXE) was applied to determine inter- and intracellular distribution of boron (10B) and gadolinium (157Gd), the capture atoms used to kill tumor cells in neutron capture therapy (NCT). Cultured 9L gliosarcoma cells on Mylar film were exposed to sodium borocaptate (BSH) and gadobenate dimeglumine (Gd-BOPTA). To analyze the inter- and intracellular distribution of 10B and 157Gd in 9L gliosarcoma cells, the cells were irradiated using a proton beam of 1.7 or 3 MeV energy collimated to 1 microm diameter and emission X-ray was detected. The distribution of 10B and 157Gd in 9L gliosarcoma cells was then examined. In this study, we could directly analyze the inter- and intracellular distribution of 10B and 157Gd elements in 9L gliosarcoma cells directly using Micro-PIXE. This is the first report on the distribution of 10B employing a method to detect gamma-rays resulting from the nuclear reaction of 10B using particle-induced gamma-ray emission (PIGE). These results show that the distribution of 157Gd elements was correctly measured using micro-PIXE. 157Gd should have the same tendency as 10B in cultured 9L gliosarcoma cells and agree with the distribution in 9L gliosarcoma cells. Further investigation is necessary for a higher spatial resolution and optimization of the measurement time or improvement of the sampling method. In the future, it will be possible to employ this method to analyze the intracellular microdistribution of the capture element and in the development of new drugs for NCT.
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Affiliation(s)
- K Endo
- Department of Neurosurgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.
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238
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Kitagawa M, Kanayama K, Sakai T. The clinical significance of cerebrospinal fluid lipid peroxides in central nervous system disease. Vet Res Commun 2006; 30:139-47. [PMID: 16400600 DOI: 10.1007/s11259-006-3070-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2004] [Indexed: 11/28/2022]
Abstract
Forty-four dogs were referred to our hospital presenting with neurological symptoms such as seizure or paraparesis. Magnetic resonance imaging (MRI) revealed abnormal results in 21 (abnormal MRI group) and normal results in 23 dogs (normal MRI group). Cerebrospinal fluid (CSF) (normal MRI group, n = 22; abnormal MRI group, n = 21) and serum lipid peroxide (LP) concentrations (normal MRI group, n = 11; abnormal MRI group, n = 15) were measured in a number of these dogs, and revealed a significant difference in the CSF/serum LP values (normal MRI group, n = 10; abnormal MRI group, n = 14) between the abnormal and the normal MRI groups (t-test and Mann-Whitney U-test p < 0.05). No other significant differences were observed. CSF/serum LP values exceeding 1.0 were exhibited in 10 of 14 dogs (71%) in the abnormal MRI group, and in 1 of 10 dogs (10%) in the normal MRI group. In the remaining animals, 4 dogs of the abnormal MRI group showed CSF/serum values lower than 1.0, 3 dogs had morphological abnormalities but no abnormal MRI signals in the central nervous system, and 1 dog had an abnormal MRI signal but no pathological abnormality. In the CSF analysis, 3 of 16 dogs (19%) of the abnormal MRI groupshowed abnormal cell counts and/or protein content. We conclude that the CSF/serum LP value can be used for the detection of neurological lesions such as oedema, inflammation and tumour.
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Affiliation(s)
- M Kitagawa
- Department of Preventive Veterinary Medicine and Animal Health, Nihon University School of Veterinary Medicine, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan.
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239
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Terai T, Henmi T, Kanematsu Y, Fujii K, Mishiro T, Sakai T, Sairyo K. Adult onset tethered cord syndrome associated with intradural dermoid cyst. A case report. Spinal Cord 2006; 44:260-2. [PMID: 16389272 DOI: 10.1038/sj.sc.3101817] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
STUDY DESIGN A case report and a review of literature. OBJECTIVES To describe a rare case of adult onset tethered cord syndrome associated with intradural dermoid cyst. SETTING General Orthopedics, Japan. METHODS A 50-year-old woman was referred to us because of right leg pain and pollakiuria. Neurological examinations and radiological assessments including myelography, computerized tomography scan and Magnetic resonance image were carried out. We diagnosed it as the adult onset tethered cord syndrome associated with an intradural cystic lesion. RESULTS The cystic lesion was totally removed following laminectomy from L5 through S4. Histologically, the tumor was diagnosed as a dermoid cyst. CONCLUSIONS Intradural dermoid could produce adult onset tethered cord syndrome, but it was not reported in the English literatures to our knowledge.
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Affiliation(s)
- T Terai
- Department of Orthopedic Surgery, Health Insurance Naruto Hospital, Naruto, Japan
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241
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Homma K, Homma Y, Yamaguchi H, Uehara G, Sakai T, Morita Y, Igarashi M, Matsuda M, Ishiwata K. We-P13:359 Prevalence of metabolic syndrome in the Japanese. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81712-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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242
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Shoji Y, Kobayashi Y, Sato G, Gomes AAB, Itou T, Ito FH, Sakai T. Genetic and phylogenetic characterization of rabies virus isolates from wildlife and livestock in Paraiba, Brazil. Acta Virol 2006; 50:33-7. [PMID: 16599183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Thirty-four rabies virus (RV) isolates from foxes (8), insectivore bats (9), cattle (14), sheep (1), a goat (1) and a donkey (1) from Paraiba state, northeastern Brazil, were genetically characterized. Sequences of 890 nts of nucleoprotein (N) genes of these isolates were analyzed and compared with those of other Brazilian isolates characterized earlier. Phylogenetic analysis revealed three genetical lineages of RV co-existing in this region. Each lineage was found to be associated with particular host species and to circulate independently of each other. The first lineage was found in foxes (Dusicyon sp.) and could be discriminated from domestic carnivore isolates from Sao Paulo, Goias and Minas Gerais in the southern and central Brazil. The second lineage was associated with insectivorous bats (Molossus spp.) and differed from vampire bat-associated RV isolates. The third lineage was found in livestock and clustered with vampire bat-associated RV isolates from Sao Paulo, Tocantins, Goias and Matto Grosso. These results indicate that RV of these genetic lineages are cocirculating in the Paraiba state and that livestock in this region are infected with vampire bat-associated RV, suggesting that the vampire bat is the main reservoir of livestock rabies in this region.
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Affiliation(s)
- Y Shoji
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan
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243
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Affiliation(s)
- M Kitagawa
- Nihon University School of Veterinary Medicine, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan.
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244
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Sairyo K, Goel VK, Vadapalli S, Vishnubhotla SL, Biyani A, Ebraheim N, Terai T, Sakai T. Biomechanical comparison of lumbar spine with or without spina bifida occulta. A finite element analysis. Spinal Cord 2005; 44:440-4. [PMID: 16317427 DOI: 10.1038/sj.sc.3101867] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
STUDY DESIGN Biomechanical study using finite element model (FEM) of lumbar spine. OBJECTIVES Very high coincidence of spina bifida occulta (SBO) has been reported more than in 60% of lumbar spondylolysis. The altered biomechanics due to SBO is one considerable factor for this coincidence. Thus, in this study, the biomechanical changes in the lumbar spine due to the presence of SBO were evaluated. SETTING United States of America (USA). METHODS An experimentally validated three-dimensional nonlinear FEM of the intact ligamentous L3-S1 segment was used and modified to simulate two kinds of SBO at L5. One model had SBO with no change in the length of the spinous process and the other had a small dysplastic spinous process. Von Mises stresses at pars interarticularis were analyzed in the six degrees of lumbar motion with 400 N axial compression, which simulates the standing position. The range of motion at L4/5 and L5/S1 were also calculated. RESULTS It was observed that the stresses in all the models were similar, and there was no change in the highest stress value when compared to the intact model. The range of motion was also similar in all the models. The lumbar kinematics of SBO was thus shown to be similar to the intact model. CONCLUSION SBO does not alter lumbar biomechanics with respect to stress and range of motion. The high coincidence of spondylolysis in spines with SBO may not be due to the mechanical factors.
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Affiliation(s)
- K Sairyo
- Department of Bioengineering, Spine Research Center, University of Toledo, Toledo, OH 43606, USA
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245
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Harada T, Kurimoto E, Tokuhiro K, Asami O, Sakai T, Nohara D, Kato K. Disulfide bond formation in refolding of thermophilic fungal protein disulfide isomerase. J Biosci Bioeng 2005; 91:596-8. [PMID: 16233046 DOI: 10.1263/jbb.91.596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2001] [Accepted: 03/06/2001] [Indexed: 11/17/2022]
Abstract
Disulfide bond formation in the refolding of thermophilic fungal protein disulfide isomerase (PDI) was investigated. It was revealed that (i) a disulfide bond buried inside the molecule is preferentially formed and contributes to the thermal stability and the isomerizing power of PDI, and (ii) formation of disulfide bonds in active sites located on the molecular surface causes deformation of the optimum conformation resulting in a decrease in the thermal stability.
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Affiliation(s)
- T Harada
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
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Tanioka Y, Tanaka T, Gotoh T, Kakinoki K, Li S, Yoshikawa T, Sakai T, Fujino Y, Suzuki Y, Kuroda Y. Augmentation of tissue ATP level during digestion using preoxygenated perfluorocarbon results in high islet yield-new strategy for islet isolation. Transplant Proc 2005; 37:220-2. [PMID: 15808600 DOI: 10.1016/j.transproceed.2004.12.232] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Recently, preservation using oxygenated perfluorocarbon (the two-layer method) has shown beneficial effects on islet yield and viability. In this paper, we apply this concept on isolation processes to examine the effectiveness of oxygenation. METHODS Rat pancreata were digested using four different methods: (groups 1A, 1B, 2A, and 2B) with or without oxygenated perfluorocarbon in groups 1 and 2, respectively. Adenosine was added into the collagenase solution in subgroup A whereas it is not added in subgroup B. RESULTS Tissue oxygen tension in group 1 was about 0 during digestion; whereas it rapidly reached about 300 mm Hg and was maintained in group 2. Tissue ATP level just after laparotomy (control) was 4.2 +/- 0.7 micromol/g dry weight. The ATP levels after digestion were 0.12 +/- 0.03 in group 1A (P < 0.01 vs control); 0.70 +/- 0.10 in group 1B (P < 0.01 vs control); 0.30 +/- 0.18 in group 2A (P < 0.01 vs control); and 2.90 +/- 0.80 in group 2B (P = 0.19 vs control). Islet yields (IEQ/pancreas) were 1600 +/- 400 in group 1B; 1400 +/- 400 in group 1B; 1300 +/- 400 in group 2A; and 2400 +/- 100 in group 2B. The amount in group 2B was significantly greater than that in the other three groups. CONCLUSIONS Oxygen provision by preoxygenated perfluorocarbon itself showed no beneficial effect on islet yield. However, if oxygen provision was associated with adenosine administration into the pancreas, tissue ATP levels after digestion were well maintained, and a greater number of islets were retrieved.
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Affiliation(s)
- Y Tanioka
- Division of Gastrointestinal Surgery, Graduate School of Medicine, Kobe University, Kobe, Hyogo, Japan
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Sakai T, Vallejo MC, Shannon KT. A parturient with neurofibromatosis type 2: anesthetic and obstetric considerations for delivery. Int J Obstet Anesth 2005; 14:332-5. [PMID: 16140520 DOI: 10.1016/j.ijoa.2005.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2004] [Revised: 01/11/2005] [Accepted: 02/02/2005] [Indexed: 02/05/2023]
Abstract
Neurofibromatosis type 2 is an extremely rare form of neurofibromatosis characterized by central nervous system involvement with bilateral vestibular schwannomas and spinal tumors. Anesthetic management of a parturient with neurofibromatosis type 2 has not been fully reported, and the condition is challenging to obstetric anesthesiologists due to the presence of intracranial and intraspinal canal neurofibromas. We present a case of neurofibromatosis type 2 referred for delivery. Because of central neuraxial involvement, regional anesthesia was avoided, and the patient delivered by cesarean section under general anesthesia. The importance of pre-operative diagnosis and multidisciplinary management for neurofibromatosis type 2 is emphasized and anesthetic and obstetric considerations for delivery are presented.
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Affiliation(s)
- T Sakai
- Department of Anesthesiology, Magee Women's Hospital, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
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Goto T, Tanioka Y, Sakai T, Matsumoto I, Kakinoki K, Tanaka T, Li S, Yoshikawa T, Fujino Y, Suzuki Y, Kuroda Y. Successful Islet Transplantation From a Single Pancreas Harvested From a Young, Low-BMI, Non–Heart-Beating Cadaver. Transplant Proc 2005; 37:3430-2. [PMID: 16298618 DOI: 10.1016/j.transproceed.2005.09.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Young donors, donors with low body mass index (BMI), and non-heart-beating (NHB) donors are considered nonideal for islet transplantation. In this report, we successfully used a pancreas from a young, low-BMI, NHB donor for islet transplantation. METHODS The donor was a 15-year-old adolescent boy whose cause of death was rupture of a primary brain tumor. According to Japanese regulations, his pancreas was procured after cardiac arrest. Warm ischemic time was 3 minutes and cold ischemic time was 300 minutes. The pancreas was digested by the automated method of Ricordi, followed by purification using continuous Euro-Ficoll gradients on a Cobe 2991 device. The recipient was a 35-year-old woman with unstable type 1 diabetes mellitus. Her pretransplant C-peptide level was null. She suffered frequent hypoglycemic unawareness. Her pretransplant M value, which is a good marker for glucose instability, was 125. Islet yield was 252,816 IEQ. There were no signs of contamination. Viability of islets assessed by FDA/PI staining was 83%. Stimulation index was 2.7. RESULTS The patient received 5160 IEQ/kg of islets via the portal vein under local anesthesia. There were no transplant-related complications. Although she required minimal exogenous insulin, her C-peptide level increased to 0.7 ng/mL at postoperative day (POD) 14. Her M value at POD 15 to 19 decreased dramatically to 23.6, indicating good glycemic control. At 3 months posttransplant, episodes of hypoglycemia disappeared. CONCLUSIONS Although an additional transplant is mandatory to wean patients from insulin, this case shows the possibility of using marginal donors, such as a young, low-BMI, NHB donor, for pancreas islet transplantation.
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Affiliation(s)
- T Goto
- Division of Gastroenterological Surgery, Graduate School of Medicine, Kobe University, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
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Harada S, Ehara S, Ishii K, Yamazaki H, Matsuyama S, Sakai T, Obara Y, Sato T, Oikawa M, Sera K, Itoh J. The Targeting of the Chemotherapeutic Agents or Radiosensitizer by Radiation, Using the Liquid Core Microcapsules. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.832] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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