Distribution of Immunoreactive Atrial and Brain Natriuretic Peptides in the Heart of the Chicken, Quail, Snake and Frog

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概要

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• The distribution of atrial natriuretic peptide (ANP)- and brain natriuretic peptide (BNP)-granules was examined immunohistochemically and ultrastructurally in the hearts of the chicken, Japanese quail, Japanese rat snake and bull-frog. Moreover, natriuretic peptide (NP)-granules in the cardiocytes were analyzed by ultrastructural morphometry. Immunohistochemically, ANP-immunoreactivity (IR) was not detected in any cardiocytes, but BNP-IR was detectable in most atrial and ventricular cardiocytes of both chicken and quail. In the snake, ANP-IR was seen in most atrial and ventricular cardiocytes, which showed traces and negative in BNP-IR, respectively. Both ANP- and BNP-IR were detected in the atrial and ventricular cardiocytes in the frog. Ultrastructurally, most of NP-granules were found in the perinuclear region in the chicken, quail and snake atrium, but the frog atrial cardiocytes had granules generally dispersing widely in the cell. By ultrastructural morphometry, the number of granules in the atrial cardiocyte was greatest in the frog, followedby the snake, and chicken or quail, in this order. The diameter of granules in the atrial cardiocyte was largest in the snake and reduced via the frog to the chicken or quail. In the ventricular cardiocytes of all species, the number and size of granules were significantly less than that in the atrial ones. These results indicated that the hearts of the chicken and quail contain only BNP, and that there are two different natriuretic peptides, ANP and BNP, in the snake and frog hearts.

• 社団法人　日本実験動物学会の論文

著者

• Suzuki Syusaku

  Institute Of Experimental Animals Shimane Medical University

• Suzuki Syusaku

  Institute Of Laboraotry Animal Sciences Faculty Of Medicine Kagoshima University

• MIFUNE Hiroharu

  Institute of Animal Experiment, School of Medicine, Kurume University

• Mifune Hiroharu

  Institute Of Animal Experimentation Kurume University School Of Medicine Kurume

• Mifune Hiroharu

  Institute Of Animal Experiment Kurume University School Of Medicine

• NOKIHARA Kiyoshi

  Biotechnology Instruments Department, Shimazu Corporation

• NODA Yasutaka

  Institute of Animal Experiment, Kurume University School of Medicine

• Noda Yasutaka

  Institute Of Animal Experiment Kurume University School Of Medicine

• Nokihara Kiyoshi

  Biotechnology Instruments Department Shimazu Corporation

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