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Yamamoto Y, Aoki S, Oba MS, Seki K, Hirahara F. Short umbilical cord length: reflective of adverse pregnancy outcomes. CLIN EXP OBSTET GYN 2017; 44:216-219. [PMID: 29746025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
UNLABELLED A short umbilical cord is associated with adverse pregnancy outcomes. However, there is no universally accepted definition of a short cord. OBJECTIVE This study aimed to determine the umbilical cord length showing the highest correlation with adverse pregnancy outcomes. MATERIALS AND METHODS The authors retrospectively analyzed the clinical data of women who attempted vaginal birth in the present institution. Umbilical cord lengths were categorized into three groups: less than the first percentile, from the first percentile to less than the tenth percentile, and others. Maternal and neonatal characteristics previously suggested to affect cord length were evaluated. The main outcome was the rate of cesarean delivery. The authors also evaluated the frequency of operative vaginal delivery, small-for-gestational-age (SGA) births, neonatal intensive care unit (NICU) admission, umbilical artery pH < 7.1, and abnormal bleeding during delivery. RESULTS Cord lengths of 35 and 45 cm corresponded to the first and tenth percentiles, respectively. A short cord was an indi- cator of unplanned cesarean delivery and small-for-gestational-age births. CONCLUSION An umbilical cord length of ≤ 45 cm is a clinically useful indicator of adverse pregnancy outcomes.
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Sumino H, Nara M, Seki K, Takahashi T, Kanda T, Ichikawa S, Goto-Onozato K, Koya S, Murakami M, Kurabayashi M. Effect of Antihypertensive Therapy on Blood Rheology in Patients with Essential Hypertension. J Int Med Res 2016; 33:170-7. [PMID: 15790128 DOI: 10.1177/147323000503300204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hypertension is an important risk factor for cardiovascular disease, and antihypertensive drugs can decrease the occurrence of such events in hypertensive patients. This study compared the rheological properties of blood in 22 untreated hypertensive patients, 42 patients taking antihypertensive drugs and 74 normotensive subjects. Using a microchannel method, the whole blood passage time was measured and blood movement was observed with a microscope connected to an image display unit. The blood passage time in untreated hypertensive patients was significantly higher than in treated hypertensive patients or normotensive subjects, but was similar in the latter two groups. Microscopic observations showed that platelet aggregation and leucocyte adhesion were increased in untreated hypertensive patients, resulting in poor flow, while blood samples from treated hypertensive patients and normotensive subjects passed smoothly through the microchannels. These rheological differences could contribute to the decrease in cardiovascular disease seen when hypertensive patients are treated effectively.
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Jakosky BM, Grebowsky JM, Luhmann JG, Connerney J, Eparvier F, Ergun R, Halekas J, Larson D, Mahaffy P, McFadden J, Mitchell DF, Schneider N, Zurek R, Bougher S, Brain D, Ma YJ, Mazelle C, Andersson L, Andrews D, Baird D, Baker D, Bell JM, Benna M, Chaffin M, Chamberlin P, Chaufray YY, Clarke J, Collinson G, Combi M, Crary F, Cravens T, Crismani M, Curry S, Curtis D, Deighan J, Delory G, Dewey R, DiBraccio G, Dong C, Dong Y, Dunn P, Elrod M, England S, Eriksson A, Espley J, Evans S, Fang X, Fillingim M, Fortier K, Fowler CM, Fox J, Gröller H, Guzewich S, Hara T, Harada Y, Holsclaw G, Jain SK, Jolitz R, Leblanc F, Lee CO, Lee Y, Lefevre F, Lillis R, Livi R, Lo D, Mayyasi M, McClintock W, McEnulty T, Modolo R, Montmessin F, Morooka M, Nagy A, Olsen K, Peterson W, Rahmati A, Ruhunusiri S, Russell CT, Sakai S, Sauvaud JA, Seki K, Steckiewicz M, Stevens M, Stewart AIF, Stiepen A, Stone S, Tenishev V, Thiemann E, Tolson R, Toublanc D, Vogt M, Weber T, Withers P, Woods T, Yelle R. MAVEN observations of the response of Mars to an interplanetary coronal mass ejection. Science 2015; 350:aad0210. [PMID: 26542576 DOI: 10.1126/science.aad0210] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Coupling between the lower and upper atmosphere, combined with loss of gas from the upper atmosphere to space, likely contributed to the thin, cold, dry atmosphere of modern Mars. To help understand ongoing ion loss to space, the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft made comprehensive measurements of the Mars upper atmosphere, ionosphere, and interactions with the Sun and solar wind during an interplanetary coronal mass ejection impact in March 2015. Responses include changes in the bow shock and magnetosheath, formation of widespread diffuse aurora, and enhancement of pick-up ions. Observations and models both show an enhancement in escape rate of ions to space during the event. Ion loss during solar events early in Mars history may have been a major contributor to the long-term evolution of the Mars atmosphere.
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Bougher S, Jakosky B, Halekas J, Grebowsky J, Luhmann J, Mahaffy P, Connerney J, Eparvier F, Ergun R, Larson D, McFadden J, Mitchell D, Schneider N, Zurek R, Mazelle C, Andersson L, Andrews D, Baird D, Baker DN, Bell JM, Benna M, Brain D, Chaffin M, Chamberlin P, Chaufray JY, Clarke J, Collinson G, Combi M, Crary F, Cravens T, Crismani M, Curry S, Curtis D, Deighan J, Delory G, Dewey R, DiBraccio G, Dong C, Dong Y, Dunn P, Elrod M, England S, Eriksson A, Espley J, Evans S, Fang X, Fillingim M, Fortier K, Fowler CM, Fox J, Gröller H, Guzewich S, Hara T, Harada Y, Holsclaw G, Jain SK, Jolitz R, Leblanc F, Lee CO, Lee Y, Lefevre F, Lillis R, Livi R, Lo D, Ma Y, Mayyasi M, McClintock W, McEnulty T, Modolo R, Montmessin F, Morooka M, Nagy A, Olsen K, Peterson W, Rahmati A, Ruhunusiri S, Russell CT, Sakai S, Sauvaud JA, Seki K, Steckiewicz M, Stevens M, Stewart AIF, Stiepen A, Stone S, Tenishev V, Thiemann E, Tolson R, Toublanc D, Vogt M, Weber T, Withers P, Woods T, Yelle R. Early MAVEN Deep Dip campaign reveals thermosphere and ionosphere variability. Science 2015; 350:aad0459. [PMID: 26542579 DOI: 10.1126/science.aad0459] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The Mars Atmosphere and Volatile Evolution (MAVEN) mission, during the second of its Deep Dip campaigns, made comprehensive measurements of martian thermosphere and ionosphere composition, structure, and variability at altitudes down to ~130 kilometers in the subsolar region. This altitude range contains the diffusively separated upper atmosphere just above the well-mixed atmosphere, the layer of peak extreme ultraviolet heating and primary reservoir for atmospheric escape. In situ measurements of the upper atmosphere reveal previously unmeasured populations of neutral and charged particles, the homopause altitude at approximately 130 kilometers, and an unexpected level of variability both on an orbit-to-orbit basis and within individual orbits. These observations help constrain volatile escape processes controlled by thermosphere and ionosphere structure and variability.
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Komine H, Takeshita K, Abe S, Ishikawa T, Kimura M, Hashimoto T, Kitaura K, Morosawa T, Seki K, Kaji K. Relationships between capture-site characteristics and capture levels of the invasive mongoose on Amami-Oshima Island, Japan. Biol Invasions 2015. [DOI: 10.1007/s10530-015-1021-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Takeda S, Mitoro A, Namisaki T, Yoshida M, Sawai M, Yamao J, Yoshiji H, Uejima M, Moriya K, Douhara A, Seki K, Ishida K, Morita K, Noguchi R, Kitade M, Kawaratani H, Okura Y, Takaya H, Fukui H. Gastric adenocarcinoma of fundic gland type (chief cell predominant type) with unique endoscopic appearance curatively treated by endoscopic submucosal resection. Acta Gastroenterol Belg 2015; 78:340-343. [PMID: 26448418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Gastric adenocarcinoma of fundic gland type [chief cell predominant type; (GA-FD-CCP)] is a rare gastric cancer variant arising from non-atrophic mucosa without Helicobacter pylori infection in the upper third portion of the stomach. GA-FD-CCP originates deep in the mucosal layer; hence, endoscopic lesion detection is often difficult at an early stage because of a minimal change in the mucosal surface. Here we present a 66-year-old man with an early stage of GA-FD-CCP showing characteristic endoscopic features. Esophagogastroduodenoscopy demonstrated a flat, slightly reddish area with black pigment dispersion and irregular micro-surface structure at the gastric fornix. The tumor was resected by endoscopic submucosal dissection and was pathologically diagnosed as GA-FD-CCP. Prussian blue staining revealed that the black pigment was a hemosiderin deposition. We reported a rare case of successfully treated GA-FD-CCP with black pigmentation that aided in early lesion detection.
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Seki K, Tokushige A, Sakka A, Imagama T, Taguchi T. FRI0595 Association Between Morning Stiffness and Disease Activity and Assessment of Ultrasonography in Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Imagama T, Tokushige A, Seki K, Taguchi T. AB0319 Is DAS28 a Useful Tool for Evaluating Hip Joint Disorders in Rheumatoid Arthritis? Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Seki K, Kinashi Y, Takahashi S. Influence of p53 status on the effects of boron neutron capture therapy in glioblastoma. Anticancer Res 2015; 35:169-174. [PMID: 25550548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND/AIM The tumor suppressor gene p53 is mutated in glioblastoma. We studied the relationship between the p53 gene and the biological effects of boron neutron capture therapy (BNCT). MATERIALS AND METHODS The human glioblastoma cells; A172, expressing wild-type p53, and T98G, with mutant p53, were irradiated by the Kyoto University Research Reactor (KUR). The biological effects after neutron irradiation were evaluated by the cell killing effect, 53BP1 foci assay and apoptosis induction. RESULTS The survival-fraction data revealed that A172 was more radiosensitive than T98G, but the difference was reduced when boronophenylalanine (BPA) was present. Both cell lines exhibited similar numbers of foci, suggesting that the initial levels of DNA damage did not depend on p53 function. Detection of apoptosis revealed a lower rate of apoptosis in the T98G. CONCLUSION BNCT causes cell death in glioblastoma cells, regardless of p53 mutation status. In T98G cells, cell killing and apoptosis occurred effectively following BNCT.
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Funase Y, Fumisawa Y, Yamada M, Nishimura R, Oike Y, Toba K, Yazaki Y, Yokoyama T, Suzuki N, Seki K, Nishio SI, Hattori Y, Kamijo Y, Komatsu M, Yamauchi K, Aizawa T. V-shaped relationship between HbA1c and all-cause mortality in the elderly with type 2 diabetes. Eur Geriatr Med 2014. [DOI: 10.1016/j.eurger.2014.07.012] [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]
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Ishikawa T, Kubota T, Abe S, Watanabe Y, Sugano T, Inoue R, Iwanaga A, Seki K, Honma T, Yoshida T. Hepatic arterial infusion chemotherapy with cisplatin before radical local treatment of early hepatocellular carcinoma (JIS score 0/1) improves survival. Ann Oncol 2014; 25:1379-1384. [PMID: 24737779 DOI: 10.1093/annonc/mdu155] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND It has not yet been determined whether hepatic arterial infusion (HAI) chemotherapy improves survival in patients with early hepatocellular carcinoma (HCC). We evaluated the effectiveness of HAI with high-concentration cisplatin (DDP-H) for the treatment of HCC by comparing outcomes between patients who received HAI with DDP-H before radical local treatment of early-stage HCC [Japan Integrated Staging (JIS) score 0/1] and patients who did not receive HAI chemotherapy. PATIENTS AND METHODS Survival was analyzed in 114 patients with early-stage HCC who underwent radical local treatment. The patients were divided into two groups: a HAI group (n = 79) who received DDP-H infusion into the whole liver via the proper hepatic artery, and a non-HAI group (n = 35) who did not receive HAI chemotherapy. RESULTS The cumulative survival rates at 1, 3, and 5 years were 77.4%, 69.2%, and 55.3% in the non-HAI group and 97.4%, 87.0%, and 84.4% in the HAI group, respectively. Survival time prolonged significantly in the HAI group compared with the non-HAI group (log-rank test: P = 0.023; generalized Wilcoxon test: P = 0.012) Multivariate analysis using the Cox proportional hazards model identified HAI with DDP-H as the most important factor affecting survival. CONCLUSIONS Whole-liver HAI with DDP-H before radical local treatment can improve the prognosis of patients with early-stage HCC.
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Seki K, Tokushige A, Imagama T, Taguchi T. AB0256 Association between Assessment of Ultrasonography of the Metatarsophalangeal Joints and Disease Activity in Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Inagaki Y, Seki K, Makino H, Sawamura D, Ikoma K. P241: Change of cerebral cortex excitability after electromyogram triggered electrical stimulation combined with mirror visual feedback in healthy elderly subjects. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50368-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Imagama T, Seki K, Sakka A, Tokushige A, Taguchi T. AB0294 Preoperative Factors Associated with Outcomes of Total Hip Arthroplasty in Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Okahashi S, Mizumoto H, Komae A, Ueno K, Yokoyama M, Nagano A, Seki K, Futaki T, Luo Z. An fNIRS-Based Study on Prefrontal Cortex Activity during a Virtual Shopping Test with Different Task Difficulties in Brain-Damaged Patients. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/jbbs.2014.46026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Shinji H, Kamada M, Seki K, Tajima A, Iwase T, Masuda S. Expression and Distribution of Very Late Antigen-5 in Mouse Peritoneal Macrophages upon Ingestion of Fibronectin-BoundStaphylococcus aureus. Microbiol Immunol 2013; 51:63-71. [PMID: 17237600 DOI: 10.1111/j.1348-0421.2007.tb03891.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Many pathogens colonize host tissues by binding to the extracellular matrix via their cell surface adhesion molecules, which are called MSCRAMMs (microbial surface components recognizing adhesive matrix molecules). Staphylococcus aureus expresses several of these adhesion molecules, some of which bind to fibronectin. Of these adhesion molecules, fibronectin-binding proteins play a role in the pathogenicity of S. aureus, although it is not yet clear whether they enhance its virulence. We have previously shown that fibronectin-bound S. aureus is efficiently phagocytosed by thioglycolate-induced mouse peritoneal macrophages. Bacterial ingestion is mediated by Very Late Antigen-5 (VLA-5; alpha5beta1 integrin) and is accompanied by the formation of adhesion complexes. Here we show that the expression of VLA-5 is restricted to thioglycolate-induced inflammatory macrophages and is not found in the resident macrophages. When cells were in suspension, alpha5 integrin was not expressed on the surface of either resident or inflammatory macrophages, whereas in adherent cells, this integrin was distributed on the surface of inflammatory but not resident macrophages. A high level of this integrin was present in the cytoplasmic region only in inflammatory macrophages. In agreement with this, fibronectin-mediated phagocytosis of S. aureus was observed only in the inflammatory macrophages. In inflammatory macrophages ingesting fibronectin-bound S. aureus, alpha5 integrin was concentrated close to the phagocytosed bacteria. This change in distribution was not found in macrophages ingesting untreated bacteria. Together with our previous work, these results indicate that, upon ingestion of fibronectin-bound S. aureus, VLA-5 accumulates in the area of phagocytosis in inflammatory macrophages, where it forms adhesion complexes.
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Ishikawa T, Kubota T, Hirose K, Abe H, Nagashima A, Seki K, Honma T, Yoshida T, Ishihara N. BTR May Be Useful Markers for Aggressive Therapy for Primary Hepatic Neuroendocrine Case with Jaundice. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Okahashi S, Seki K, Nagano A, Luo Z, Kojima M, Futaki T. A virtual shopping test for realistic assessment of cognitive function. J Neuroeng Rehabil 2013; 10:59. [PMID: 23777412 PMCID: PMC3689619 DOI: 10.1186/1743-0003-10-59] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 06/06/2013] [Indexed: 11/10/2022] Open
Abstract
Background Cognitive dysfunction caused by brain injury often prevents a patient from achieving a healthy and high quality of life. By now, each cognitive function is assessed precisely by neuropsychological tests. However, it is also important to provide an overall assessment of the patients’ ability in their everyday life. We have developed a Virtual Shopping Test (VST) using virtual reality technology. The objective of this study was to clarify 1) the significance of VST by comparing VST with other conventional tests, 2) the applicability of VST to brain-damaged patients, and 3) the performance of VST in relation to age differences. Methods The participants included 10 patients with brain damage, 10 age-matched healthy subjects for controls, 10 old healthy subjects, and 10 young healthy subjects. VST and neuropsychological tests/questionnaires about attention, memory and executive function were conducted on the patients, while VST and the Mini-Mental State Examination (MMSE) were conducted on the controls and healthy subjects. Within the VST, the participants were asked to buy four items in the virtual shopping mall quickly in a rational way. The score for evaluation included the number of items bought correctly, the number of times to refer to hints, the number of movements between shops, and the total time spent to complete the shopping. Results Some variables on VST correlated with the scores of conventional assessment about attention and everyday memory. The mean number of times referring to hints and the mean number of movements were significantly larger for the patients with brain damage, and the mean total time was significantly longer for the patients than for the controls. In addition, the mean total time was significantly longer for the old than for the young. Conclusions The results suggest that VST is able to evaluate the ability of attention and everyday memory in patients with brain damage. The time of VST is increased by age.
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Seki K, Sakka A, Tanaka H, Tokushige A, Imagama T, Taguchi T. AB0352 Patellar non-resurfacing in total knee arthroplasty for rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Harada N, Vasudeva S, Joshi R, Seki K, Araki K, Matsuda Y, Okano T. Correlation between panoramic radiographic signs and high-risk anatomical factors for impacted mandibular third molars. ACTA ACUST UNITED AC 2013. [DOI: 10.1111/ors.12025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Omoto M, Imai T, Seki K, Nomura R, Otahara Y. The effect on the bones of condensed phosphate when used as food additives: Its Importance in Relation to Preventive Medicine. Environ Health Prev Med 2012; 2:105-16. [PMID: 21432463 DOI: 10.1007/bf02931975] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Based on the fact that chemical products such as binding agents are produced by mixing three kinds of phosphates with different ratios, we mixed metaphosphate, polyphosphate and pyrophosphate. Each was made to Na-phosphate, K-phosphate, and Ca-phosphate and each was mixed with commercial feeds so that the content of P would be approximately 0.1, 0.15, 0.3, 0.4, 0.6 and 1.0%. The prepared pellets were given to ICR, CF # 1 and AKR strains of mice at 29 days of age for 680 days and observations were made through this experimental period at different stages. The observations were also carried out on the mice administered with the experimental feeds for 1.5 months from 9 to 10.5 months of age. The observations were compared with those of the control group at all times. As a result, plasma 1 α, 25 (OH)(2) D(3) and P levels were always significantly higher in the phosphate administered groups relative to the control. Urine P and Fe increased while urine Ca decreased in the phosphate-treated groups.The effect of phosphates on the bones was studied taking soft X-ray pictures of hind legs and applying microdensitometry to them. Through these observations we recognized thinning of the cortex of bones, reduction of marrow trabecules and development of osteophyte. Histological observations disclosed that changes in knee joint tissues were apparent; that is, a decrease in or an irregular loss of the number of cells in superficial, intermediate, and radial strata of the joint cartilage, proliferation of subchondral bone, and the development of osteophytes were noted. As for muscles, diameters of musclar fibers became smaller; in particular, type II fibers showed greater shrinkage. Regarding kidneys, swelling and atrophy of glomerular capillaries, proliferation of mesangial cells, nephroselerosis, swelling, thinning, and loss of tubular epithelium, interstitial tissue inflammation, development of cylindruria, and deposition of calcium were observed. All these changes seem to be a particularly advanced aspect of the changes which are more pronounced with increasing dose and age.These changes were found even in the group administered with the feed containing 0.1% phosphorus, and, these changes were dependent on the concentration level of P. It was observed that administration to older subjects for a short term (1.5 months) produced effects stronger than those to younger subjects administered for a long term (10.5 months).The effects of condensed Ca-phosphate on bones were similar to those of condensed Na- and K-phosphates, and, hence, it was supposed that these effects were caused by phosphate radicals.
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Seki K, Yamaguchi A, Goi T, Nakagawara G, Matsukawa S, Urano T, Furukawa K. Inhibition of liver metastasis formation by anti-CD44 variant exon 9 monoclonal antibody. Int J Oncol 2012; 11:1257-61. [PMID: 21528332 DOI: 10.3892/ijo.11.6.1257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The overexpression of variants of the glycoprotein CD44 is thought to be associated with the tumorigenesis and progression of human cancers. We examined the role of the variant CD44v8-10 in the metastasis of the human colon cancer cell line HT29 using a monoclonal antibody (mAb 44-1V) reactive with the v9 product. After immunization with mAb 44-1V, the growth of HT29m cells in vitro was not retarded. Six-to 8-week-old mice were divided into 4 groups for liver metastasis assay. All animals in control groups injected with intrasplenic HT29m developed metastases. In contrast, only one of the animals injected with HT29m that reacted with mAb 44-1V developed a metastatic tumor in the liver. The intravenous administration of mAb 44-1V after intrasplenic HT29m injection did not inhibit the formation of liver metastasis. In addition, the adhesiveness of the HT29m cells to the basement membrane matrix was decreased by treatment with the anti-CD44v9 mAb. These findings indicated that a CD44 variant containing the products of variants of exons v8-10 may play an important role in adhesion of tumor cells to the capillaries of distant organs in the metastatic process.
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Tanaka S, Seki K, Hanakawa T, Harada M, Sugawara SK, Sadato N, Watanabe K, Honda M. Abacus in the brain: a longitudinal functional MRI study of a skilled abacus user with a right hemispheric lesion. Front Psychol 2012; 3:315. [PMID: 22969743 PMCID: PMC3428809 DOI: 10.3389/fpsyg.2012.00315] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 08/10/2012] [Indexed: 11/13/2022] Open
Abstract
The abacus, a traditional physical calculation device, is still widely used in Asian countries. Previous behavioral work has shown that skilled abacus users perform rapid and precise mental arithmetic by manipulating a mental representation of an abacus, which is based on visual imagery. However, its neurophysiological basis remains unclear. Here, we report the case of a patient who was a good abacus user, but transiently lost her "mental abacus" and superior arithmetic performance after a stroke owing to a right hemispheric lesion including the dorsal premotor cortex (PMd) and inferior parietal lobule (IPL). Functional magnetic resonance imaging experiments were conducted 6 and 13 months after her stroke. In the mental calculation task, her brain activity was shifted from the language-related areas, including Broca's area and the left dorsolateral prefrontal and IPLs, to the visuospatial-related brain areas including the left superior parietal lobule (SPL), according to the recovery of her arithmetic abilities. In the digit memory task, activities in the bilateral SPL, and right visual association cortex were also observed after recovery. The shift of brain activities was consistent with her subjective report that she was able to shift the calculation strategy from linguistic to visuospatial as her mental abacus became stable again. In a behavioral experiment using an interference paradigm, a visual presentation of an abacus picture, but not a human face picture, interfered with the performance of her digit memory, confirming her use of the mental abacus after recovery. This is the first case report on the impairment of the mental abacus by a brain lesion and on recovery-related brain activity. We named this rare case "abacus-based acalculia." Together with previous neuroimaging studies, the present result suggests an important role for the PMd and parietal cortex in the superior arithmetic ability of abacus users.
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Tamura Y, Seki K, Usami M, Taku S, Bontje P, Ando H, Taru C, Ishikawa Y. Cultural adaptation and validating a Japanese version of the readiness for interprofessional learning scale (RIPLS). J Interprof Care 2012; 26:56-63. [PMID: 22233369 DOI: 10.3109/13561820.2011.595848] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Readiness for interprofessional education (IPE) can be an important factor to evaluate because of the influences of attitudes toward the outcomes of interprofessional learning activities. However, a dearth of Japanese evaluation tools hinders its evaluation. The readiness for interprofessional learning scale (RIPLS) was selected, because it has been validated in different countries and its items reflected our local situation best. This research aimed to develop and validate a Japanese version of the original 19-item RIPLS. We developed a Japanese RIPLS employing forward/backward translation. Reliability of the Japanese version was studied using classical test theory and structural equation modeling to construct a model to inform curriculum development. We obtained a 0.74 Cronbach's α, which indicates adequacy. Subscales of "interprofessional education opportunities" (α = 0.90) and "uniqueness of profession" (α = 0.60) have relatively little weight compared to "teamwork and collaboration" (α = 0.92). A one-way structure suggests that readiness for interprofessional learning starts with "teamwork & collaboration" followed by changes in "learning opportunities" and subsequently "uniqueness of profession" (root mean square error of approximation = 0.06, comparative fit index = 0.93). This Japanese RIPLS can be used in undergraduate health sciences students with appropriate caution. Further development of the subscales and a client-centered subscale would be beneficial to fully achieve its potential. The need for further research into its reliability and validity is identified. Recommendations are provided for cross-cultural adaptation and for establishing validity across different contexts.
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Iwamura T, Sakamoto Y, Kutsukata N, Hitomi T, Seki K, Koga M, Yamashita T, Nakashima A, Nishimura Y, Yahata M, Yamada K. Examination of out-of-hospital cardiac arrest patients with the Utstein style in Saga prefecture, Japan. Crit Care 2012. [PMCID: PMC3363685 DOI: 10.1186/cc10874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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