Kiyohiko Tijiwa

Nihon University, Edo, Tōkyō, Japan

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Publications (1)1.54 Total impact

  • [Show abstract] [Hide abstract] ABSTRACT: The objective of the study was to investigate the dynamics of changes in number of granulocytes in bacterial infections of carp (Cyprinus carpio). Carp were inoculated with non-pathogenic or pathogenic bacteria and changes in type I (neutrophils) and type II granulocyte (basophils/eosinophils) counts in kidney, circulating blood and peritoneal cavity were assessed. After the injection of non-pathogenic bacteria (Escherichia coli), the number of type I and II cells in blood increased after 6-12h, but returned to the control level after 24-48 h. In contrast, after the injection of pathogenic bacteria (Aeromonas hydrophila), the number of type I cells initially increased followed by an increase in the number of type II cells. The peak counts of type I and II cells were at 12 and 24h after the injection, respectively. When the fish were given serial-injections of formalin-killed bacteria at 12-h intervals, the type II cells also predominantly increased and remained at high levels, following the peak count of type I cells.
    No preview · Article · Dec 2002 · Veterinary Immunology and Immunopathology

Publication Stats

8 Citations
1.54 Total Impact Points


  • 2002
    • Nihon University
      • Department of Veterinary Medicine
      Edo, Tōkyō, Japan