Development of Dot Blot Technique for Detection of Vitellogenin as a Biomarker of Endocrine Disrupting Chemicals

Authors

  • Phochit Nanthanawat
  • Witchuda Prasatkaew

Abstract

Development of a dot blot technique for detection of vitellogenin in sea bass (Lates calcarifer) for using as a biomarker of endocrine disrupting chemicals (EDCs) exposure to the environment. Dot blot technique by using a specific monoclonal antibody to vitellogenin of sea bass (MAb-sea bass VTG F3-23) can be measured vitellogenin levels at 7.8 ng. It can be used to monitor vitellogenin in natural fish. Cross-reactivity testing of MAb-sea bass VTG F3-23 has shown the reactivity to vitellogenin from Coral grouper and Nile tilapia that were induced by injection with 17β-estradiol without cross-reactivity to control fish. The assessment of vitellogenin in 6 fish species (nile tilapia, three spotted tilapia, striped snake-head, moonbeam gourami, climbing perch, and silver barbs) from industrial, residential and agriculture area reveals that, the highest induction of VTG in male fishes were found from the industrial and agriculture area respectively (33.33% and 11.11%). These data suggest that EDCs were present in aquatic environment and vitellogenin detection using dot blot technique could be validated for a biomarker of EDCs in aquatic environment.                    Keywords :  vitellogenin, sea bass, biomarker, dot blot, endocrine disrupting chemicals

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2018-10-08

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