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      Effect of endotoxin on the immunity of Indian major carp, Labeo rohita

      , , , , , ,
      Fish & Shellfish Immunology
      Elsevier BV

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          Abstract

          Endotoxin, a lipopolysaccharide component of outer cell wall membrane of the Gram-negative bacteria is a factor responsible for a number of biological effects including immunostimulatory activities in different animal species including fish. In this study, L. rohita yearlings of weight ranging from 80 to 100g were injected intraperitoneally with 0.5, 1, 2, 5, 10 and 20 EU/fish dose of endotoxin to find out its effect on the immunity. The L. rohita yearlings were found to resist the endotoxin dose up to 20 EU/fish and at the lower doses, i.e., at 1 and 2 EU/fish; it acted as an immune potentiator. Different serum and immune parameters like protein, globulin, lysozyme, respiratory burst activity, myeloperoxidase activity, natural agglutination titre were found to be significantly high (p<0.01) at a dose of 1 EU/fish. While at 10 and 20 EU/fish, most of these parameters were lower thereby indicating the immuno-suppressive nature of the endotoxin at these higher doses.

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          Author and article information

          Journal
          Fish & Shellfish Immunology
          Fish & Shellfish Immunology
          Elsevier BV
          10504648
          April 2008
          April 2008
          : 24
          : 4
          : 394-399
          Article
          10.1016/j.fsi.2007.09.005
          18289877
          99cbf557-f283-47d9-92d8-03c589256fd6
          © 2008

          https://www.elsevier.com/tdm/userlicense/1.0/

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