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312 results on '"Ishihara, Akira"'

156. Lung cancer involving the superior vena cava: Pneumonectomy with concomitant partial resection of superior vena cava

Author

Yoshimura, Hirokuni, Kazama, Shigeru, Asari, Hideo, Itoh, Hiroshi, Tominaga, Seiichi, and Ishihara, Akira

Abstract

We report two cases in which partial resection and reconstruction of the superior vena cava (SVC) were performed with the use of a temporary SVC-right atrial internal bypass for complete resection of carcinoma of the right lung. In the first case, the SVC was invaded by the primary tumor itself, arising in the anterior segment of the right upper lobe. In the second case a metastasized tracheobronchial lymph node had invaded the SVC. In both cases, partial resection of SVC was performed safely with the internal bypass technique.

Published
1979
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157. Coordination of Flagella on Filamentous Cells of Escherichia Coli

Author

Ishihara, Akira, Segall, Jeffrey E., Block, Steven M., and Berg, Howard Curtis

Abstract

Video techniques were used to study the coordination of different flagella on single filamentous cells of Escherichia coli. Filamentous, nonseptate cells were produced by introducing a cell division mutation into a strain that was polyhook but otherwise wild type for chemotaxis. Markers for its flagellar motors (ordinary polyhook cells that had been fixed with glutaraldehyde) were attached with antihook antibodies. The markers were driven alternately clockwise and counterclockwise, at angular velocities comparable to those observed when wild-type cells are tethered to glass. The directions of rotation of different markers on the same cell were not correlated; reversals of the flagellar motors occurred asynchronously. The bias of the motors (the fraction of time spent spinning counterclockwise) changed with time. Variations in bias were correlated, provided that the motors were within a few micrometers of one another. Thus, although the directions of rotation of flagellar motors are not controlled by a common intracellular signal, their biases are. This signal appears to have a limited range., Molecular and Cellular Biology

Published
1983

159. Chemotactic signaling in filamentous cells of Escherichia coli

Author

Segall, Jeffrey E., Ishihara, Akira, Berg, Howard C., Segall, Jeffrey E., Ishihara, Akira, and Berg, Howard C.

Abstract

Video techniques were used to record chemotactic responses of filamentous cells of Escherichia coli stimulated iontophoretically with aspartate. Long, nonseptate cells were produced from polyhook strains either by introducing a cell division mutation or by growth in the presence of cephalexin. Markers indicating rotation of flagellar motors were attached with anti-hook antibodies. Aspartate was applied by iontophoretic ejection from a micropipette, and the effects on the direction of rotation of the markers were measured. Motors near the pipette responded, whereas those sufficiently far away did not, even when the pipette was near the cell surface. The response of a given motor decreased as the pipette was moved away, but it did so less steeply when the pipette remained near the cell surface than when it was moved out into the external medium. This shows that there is an internal signal, but its range is short, only a few micrometers. These experiments rule out signaling by changes in membrane potential, by simple release or binding of a small molecule, or by diffusion of the receptor-attractant complex. A likely candidate for the signal is a protein or ligand that is activated by the receptor and inactivated as it diffuses through the cytoplasm. The range of the signal was found to be substantially longer in a cheZ mutant, suggesting that the product of the cheZ gene contributes to this inactivation.

Published
1985

172. RADIOISOTOPES

Author

SHIMOJI, Asao, primary, IMAMURA, Rikiyo, additional, YOSHIMURA, Fusako, additional, ISHIHARA, Akira, additional, NAKAZAKI, Toshihiko, additional, YOSHIMASA, Yasunao, additional, YAMADA, Satoshi, additional, and HAMADA, Satoshi, additional

Published
1980
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173. A case with huge splenic pseudocyst.

Author

KODAMA, Yoshiaki, primary, KOBAYASHI, Yoshiaki, additional, KUROGI, Motoo, additional, ISHIHARA, Akira, additional, MINODA, Setsuo, additional, and NAKAMURA, Ryousei, additional

Published
1984
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176. Clinical evaluation of sultamicillin (SBTPC, Unasyn) in infections in the field of oral surgery.

Author

ITO, Ataka, primary, TAKAI, Yoshiki, additional, IMAI, Takao, additional, ISHIHARA, Akira, additional, KATO, Hisayoshi, additional, KIM, Do-Wan, additional, YAMASHITA, Toshiyasu, additional, NAKAYAMA, Kazuhisa, additional, YOSHIDA, Kenji, additional, FUKAYA, Masahiko, additional, YAMADA, Shiro, additional, JINNO, Takuzo, additional, TOMIDA, Youji, additional, INAMOTO, Hiroshi, additional, and FUJIMOTO, Tsuyoshi, additional

Published
1989
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195. The Centrifugal Oxygenator

Author

Sakakibara, Shigeru, primary, Sakai, Yutaka, additional, Ishihara, Akira, additional, Yamaguchi, Shigeru, additional, and Fujikura, Ichiro, additional

Published
1968
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