Effect of Prostaglandins on Cultured Porcine Iris Sphincter Muscle Cells

1996 ◽  
Vol 12 (3) ◽  
pp. 343-351 ◽  
Author(s):  
NAOYA FUJIMOTO ◽  
HITOSHI SHICHI
Keyword(s):  
Muscle Cells ◽  
Sphincter Muscle ◽  
Iris Sphincter

Light and Electron Microscopic Studies Regarding Cell Contractility and Cell Coupling in Light Sensitive Smooth Muscle Cells from the Isolated Frog Iris Sphincter

1987 ◽  
Vol 42 (7-8) ◽  
pp. 977-985 ◽  
Author(s):  
Klaus V. Wolf
Keyword(s):  
Gap Junctions ◽  
Freeze Fracture ◽  
Muscle Cells ◽  
Sphincter Muscle ◽  
Cell Coupling ◽  
Electron Microscopic ◽  
Thin Sections ◽  
Cell Contractility ◽  
Microscopic Studies ◽  
Iris Sphincter

(1) In light microscopical studies of living isolated frog irises, it was found that the maximal areas of experimentally light induced contractions in the m. sphincter pupillae were located beneath small illuminated regions. There were no visible contractions of muscle cells outside the illuminated areas. It was shown that exposure to light could directly cause contractions of isolated single sphincter muscle cells. (2) Junctional structures of the iris sphincter cells were studied by means of thin sections and freeze fracture electron microscopy. Intermediate junctions, a few focal tight junctions and occasional small gap junctions were identified. Pit containing intramembranous particles which resemble gap junction connexons were found in large numbers, dispersed over the plasmalemmas of sphincter muscle cells. From these physiological and morphological observations, it is concluded that sphincter muscle cells of the frog iris may be coupled via gap junctions, but that the cell coupling is not sufficiently extensive to form the basis for a functional syncytium.

scholarly journals Synergistic Signaling by Light and Acetylcholine in Mouse Iris Sphincter Muscle

2017 ◽  
Vol 27 (12) ◽  
pp. 1791-1800.e5 ◽  
Author(s):  
Qian Wang ◽  
Wendy Wing Sze Yue ◽  
Zheng Jiang ◽  
Tian Xue ◽  
Shin H. Kang ◽  
...  
Keyword(s):  
Sphincter Muscle ◽  
Iris Sphincter

scholarly journals Levels of IMeurokinin A, Neurokinin B and Substance P in Rabbit Iris Sphincter Muscle

1986 ◽  
Vol 42 (4) ◽  
pp. 590-593 ◽  
Author(s):  
Takashi TANIGUCHI ◽  
Motohatsu FUJIWARA ◽  
Yoshinori MASUO ◽  
Ichiro KANAZAWA
Keyword(s):  
Substance P ◽  
Sphincter Muscle ◽  
Neurokinin B ◽  
Rabbit Iris Sphincter Muscle ◽  
Rabbit Iris Sphincter ◽  
Rabbit Iris ◽  
Iris Sphincter

Nitric Oxide in the Iris Sphincter Muscle

2000 ◽  
pp. 109-126
Author(s):  
Hideki Chuman ◽  
Tomomi Chuman
Keyword(s):  
Nitric Oxide ◽  
Sphincter Muscle ◽  
Iris Sphincter

scholarly journals NONCHOLINERGIC, NONADRENERGIC CONTRACTION AND SUBSTANCE ऩ IN RABBIT IRIS SPHINCTER MUSCLE

1981 ◽  
Vol 31 (6) ◽  
pp. 1071-1080
Author(s):  
Naoko UEDA ◽  
Ikunobu MURAMATSU ◽  
Yoshihiko SAKAKIBARA ◽  
Motohatsu FUJIWARA
Keyword(s):  
Sphincter Muscle ◽  
Rabbit Iris Sphincter Muscle ◽  
Rabbit Iris Sphincter ◽  
Rabbit Iris ◽  
Iris Sphincter

Immortalization of cat iris sphincter smooth muscle cells by SV40 virus: Growth, morphological, biochemical and pharmacological characteristics

1995 ◽  
Vol 61 (5) ◽  
pp. 535-545 ◽  
Author(s):  
Anette Ocklind ◽  
Sardar Y.K. Yousufzai ◽  
Sikha Ghosh ◽  
Miguel Coca-Prados ◽  
Johan St Jernschantz ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Muscle Cells ◽  
Virus Growth ◽  
Sv40 Virus ◽  
Iris Sphincter
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