Journal of Biorheology最新文献_第7页

Effects of nitric oxide on ammonia decomposition by hepatocytes under shear stress 一氧化氮对切应力下肝细胞氨分解的影响

Journal of Biorheology Pub Date : 2016-01-01 DOI: 10.17106/JBR.30.19

Tateki Sumii, Yohei Nakano, Takuma Abe, K. Nakashima, T. Sera, S. Kudo

{"title":"Effects of nitric oxide on ammonia decomposition by hepatocytes under shear stress","authors":"Tateki Sumii, Yohei Nakano, Takuma Abe, K. Nakashima, T. Sera, S. Kudo","doi":"10.17106/JBR.30.19","DOIUrl":"https://doi.org/10.17106/JBR.30.19","url":null,"abstract":"Nitric oxide (NO) and shear stress modulates hepatocyte functions, including ammonia metabolism. This study investigated the simultaneous effects of NO and shear stress on hepatocyte functions. We developed a cell culture device to simultaneously apply NO and shear stress to hepatocytes, and measured changes in ammonia decomposition by hepatocytes in response to changes in NO concentration and shear stress. NO was supplied directly to cells at a constant rate at 0, 0.5, 5, and 25 ppm, and shear stress was either applied at 0.6 Pa or not (static culture). Ammonia decomposition in static culture was higher under all NO loads compared with 0 ppm NO, and was highest under 0.5 ppm NO and decreased under higher NO loads. In the absence of NO load, ammonia decomposition under shear stress was approximately double that in static culture. Under the simultaneous application of NO and shear stress load, ammonia decomposition under 0.5 ppm NO was approximately twice as high as under 0 ppm NO, but was almost the same under 25 ppm NO as under 0 ppm NO. These results indicate that both NO and shear stress enhance ammonia decomposition although the enhancement depends on the NO concentration in their immediate surroundings.","PeriodicalId":39272,"journal":{"name":"Journal of Biorheology","volume":"30 1","pages":"19-26"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17106/JBR.30.19","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68196268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Kinetics of the orientation transition in the lyotropic lamellar phase 溶致层状相取向转变动力学

Journal of Biorheology Pub Date : 2016-01-01 DOI: 10.17106/JBR.30.27

S. Fujii, Yuki Yamamoto

引用次数: 2

Rheological properties and interactions between polysaccharides in mixed carrageenan solutions 混合卡拉胶溶液中多糖的流变性能及相互作用

Journal of Biorheology Pub Date : 2016-01-01 DOI: 10.17106/JBR.30.13

L. Du, Yang Lu, Lester C. Geonzon, Jingli Xie, S. Matsukawa

{"title":"Rheological properties and interactions between polysaccharides in mixed carrageenan solutions","authors":"L. Du, Yang Lu, Lester C. Geonzon, Jingli Xie, S. Matsukawa","doi":"10.17106/JBR.30.13","DOIUrl":"https://doi.org/10.17106/JBR.30.13","url":null,"abstract":"The possibility of phase separation in the mixture of iota-carrageenan (IC) and kappa-carrageenan (KC) was elucidated by comparing rheological properties for carrageenan mixtures. In temperature sweeping experiments, lambda-carrageenan (LC) chain slightly lowered the aggregation temperature (Tagg) of IC and KC in the mixture solutions of IC-LC and KC-LC, respectively, by obstructing the aggregation. On the other hand, dextran chain largely lowered the Tagg of IC because of the strong interaction with IC chain, whereas dextran increased Tagg of KC. The IC-KC solutions showed two-step increases at the almost same temperatures with Taggs in single component solutions of IC and KC. This exhibits independent aggregations of IC and KC chains in the mixture and suggesting the phase separation in the IC-KC solution. In the time courses of G', the IC-LC solution showed increases of G' by local aggregation of IC chain and by growing of aggregation of IC chain through the obstructive LC chains. The IC-dextran mixture solution showed a depressed increase of G' caused by a strong interaction between IC and dextran. The time courses of G' for the IC-KC solution showed two-step increases suggesting the induced aggregation of KC chains by the aggregation of IC chains.","PeriodicalId":39272,"journal":{"name":"Journal of Biorheology","volume":"30 1","pages":"13-18"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17106/JBR.30.13","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68196711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Research on bioelectromechanics for 70 years 生物电力学研究70年

Journal of Biorheology Pub Date : 2016-01-01 DOI: 10.17106/JBR.30.1

E. Fukada

{"title":"Research on bioelectromechanics for 70 years","authors":"E. Fukada","doi":"10.17106/JBR.30.1","DOIUrl":"https://doi.org/10.17106/JBR.30.1","url":null,"abstract":"In 1944, I graduated from the Department of Physics, the University of Tokyo and entered to the Kobayasi Institute of Physical Research, where Dr. Syoten Oka was a Chief Scientist in the Laboratory of Polymer Physics. I studied the theory of dielectric materials under his guidance. I also belonged to the laboratory of Dr. Heiji Kawai who was known by the basic and applied research on the piezoelectricity of Rochelle Salt crystal. Under his guidance I learned the experimental techniques of vibration, which later led me to the research on the piezoelectricity of polymers. I was a British Council Scholar from August, 1956 to February, 1957. I stayed at the laboratory of Dr. R.W.B. Stephens in the Imperial College of Science and Technology, the University of London, and studied the viscoelasticity of irradiated polyethylene and polyesters under the direction of Dr. A. Charlesby at the Atomic Energy Establishment, Harwell, England. In 1963, I moved to the Institute of Physical and Chemical Research (now RIKEN). I worked there as a Chief Scientist in Polymer Physics Laboratory until 1980. I was an Executive Director of Riken from 1981 to 1984. After retirement, I worked as a Research Advisor at the Tsukuba Institute for Super Materials, ULVAC Japan Ltd from 1987 to 1998. Concurrently, in 1991, I was lucky to come back to the Kobayasi Institute of Physical Research, where I still remained as an Emeritus Scientist. I was a visiting professor at the Physics Department of Gakushuin University from 1961 to 1980. I was lucky to be invited as a visiting professor to various foreign countries. The names to whom I am very grateful are Prof. M.H. Shamos of New York University in 1965, Prof. S. Mascarenhas of the University of Sao Paulo in 1974, Prof. G. M. Sessler of the Technical University of Darmstadt and Prof. K. Dransfeld of the University of Konstanz in 1986 and Prof. G. Arlt of the Technical University of Aachen in 1987 and Prof. D. Liepsch of Eisenhauer Medical Center, Palm Springs in 1988.","PeriodicalId":39272,"journal":{"name":"Journal of Biorheology","volume":"30 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17106/JBR.30.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68196472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Noninvasive optical imaging of thrombus formation in mechanical circulatory support devices 机械循环支持装置血栓形成的无创光学成像

Journal of Biorheology Pub Date : 2016-01-01 DOI: 10.17106/JBR.30.6

D. Sakota, Tomotaka Murashige, R. Kosaka, Tatsuki Fujiwara, K. Ouchi, M. Nishida, O. Maruyama

{"title":"Noninvasive optical imaging of thrombus formation in mechanical circulatory support devices","authors":"D. Sakota, Tomotaka Murashige, R. Kosaka, Tatsuki Fujiwara, K. Ouchi, M. Nishida, O. Maruyama","doi":"10.17106/JBR.30.6","DOIUrl":"https://doi.org/10.17106/JBR.30.6","url":null,"abstract":"We developed a hyperspectral imaging (HSI) method to image a rotary blood pump rotating at high speed, and we investigated the optical properties of blood associated with the blood clotting. In vitro antithrombogenic testing was conducted. Fresh porcine blood was circulated by a hydrodynamically levitated centrifugal blood pump while light pulsed at the same frequency as the rotational speed illuminated the bottom surface of the pump. Back scattering was captured with an HSI camera, and the spectral image in the wavelength range from 608 to 752 nm was constructed. Back scattering in the area of suspected thrombus formation decreased. the shape of the spectral image was consistent with that of the thrombus formed in the pump. Moreover, the hemoglobin concentration of the thrombus was quantified, and its value was significantly lower than the total hemoglobin concentration. therefore, it is speculated that the decrease in back scattering is caused by a decrease in the number of red blood cells (rBcs) trapped in the thrombus area due to the surrounding blood flow. It was concluded that this optical technique is able to detect blood clotting using the behavior of rBcs as the optical marker for its detection.","PeriodicalId":39272,"journal":{"name":"Journal of Biorheology","volume":"69 1","pages":"6-12"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17106/JBR.30.6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68196278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Correlation between rheological properties and turbidity of mixed gels of gelatin and agar 明胶和琼脂混合凝胶的流变性能与浊度的关系

Journal of Biorheology Pub Date : 2015-01-01 DOI: 10.17106/JBR.29.6

Y. Maki, Kazushi Toriba, Y. Toyama, T. Dobashi

引用次数: 0

Analysis of the influence of volume and red blood cell concentration of a thrombus on the permittivity of blood 血栓体积和红细胞浓度对血液介电常数影响的分析

Journal of Biorheology Pub Date : 2015-01-01 DOI: 10.17106/JBR.29.15

Takuto Fuse, A. Sapkota, O. Maruyama, R. Kosaka, T. Yamane, M. Takei

引用次数: 7

Evaluation of the structural stability of amyloid fibrils by dynamic light scattering 动态光散射法评价淀粉样蛋白原纤维的结构稳定性

Journal of Biorheology Pub Date : 2015-01-01 DOI: 10.17106/JBR.29.24

Masatoshi Saiki, M. Akimoto