This invention relates to the field of
livestock and poultry breeding and
food safety testing technology, and in particular to a method for assessing
copper exposure hepatotoxicity based on the
endoplasmic reticulum stress-
endoplasmic reticulum autophagy axis and its application. This method obtains
liver tissue samples or
in vitro cultured
hepatocyte samples from
copper-exposed subjects, and jointly detects the expression levels of key markers of the
endoplasmic reticulum stress pathway and characteristic markers of the endoplasmic reticulum
autophagy pathway. Combined with two-way pharmacological validation, a grading assessment standard for
copper exposure hepatotoxicity is established. This invention overcomes the shortcomings of traditional
liver enzyme indicators, such as low sensitivity and strong
lag, and has the advantages of early warning, high specificity, and reliable results. It can be widely applied to scenarios such as determining the copper safety threshold in
livestock and poultry feed, early screening for copper
exposure hepatotoxicity, assessment of copper
pollution ecological risks, and screening of copper
toxicity protectants, providing
technical support for ensuring
animal health and the safety of animal-derived food.