title: [Omparative study on allergen assessment animal models in Brown Norway rat and guinea pig].
abstract: OBJECTIVE
  To compare the sensitivity of Brown Norway rats (BN) with Guinea pigs (GP) as allergen assessment animal models.
  
  
  METHODS
  BN rats and GP were randomly assigned to 1 control group, 2 Bovine serum albumin group (BSA), respectively. Animals in BSA groups of BN rats and GPs were sensitized by intraperitoneal injection of 0.6% BSA 1 ml on day 1, 3, 5, respectively, and irritated by intravenous injection of 2.4% BSA 1 ml on day 7 and day 14 after the last sensitization, while the same volume of normal saline was given to control group on each time point mentioned above. The allergic reactions were scored within 1 h after each irritation treatment, and the sera of both BN rats and GPs were collected to detect IgE concentration by using ELISA. The sera were also applied for passive cutaneous anaphylaxis test (PCA test) in SD rats.
  
  
  RESULTS
  No obvious allergic reactions were observed in BSA group of GPs after each irritation treat, however, the score of allergic response in BSA group of BN rats was evidently higher than that in control group after first irritation. PCA test by using sera from BSA group of BN rats after both irritations showed the strong positive result characterized as large amount of subcutaneous effusions of Evans blue in SD rats, however, the sera from BSA group of GP were negative in PCA test. Serum IgE concentration did not increase after each irritation in BSA group of both BN rats and GP.
  
  
  CONCLUSIONS
  BN rats were more sensitive than GPs on initiative systemic anaphylaxis test and passive cutaneous anaphylaxis test. Meanwhile, BN rats has an advantage in experimental treatment compared with Guinea pigs.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Liu
authors.forename: Aihua
authors.initials: A
authors.lastname: Liang
authors.forename: Yan
authors.initials: Y
authors.lastname: Yi
authors.forename: Chunying
authors.initials: C
authors.lastname: Li
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhao
authors.forename: Ran
authors.initials: R
authors.lastname: Hao
authors.forename: Chunyu
authors.initials: C
authors.lastname: Cao
mesh_terms: D000485:Allergens / Q000008:administration & dosage* / Q000633:toxicity; D000707:Anaphylaxis / Q000139:chemically induced*; D000818:Animals; D006168:Guinea Pigs; D006967:Hypersensitivity / Q000209:etiology*; D008297:Male; D023421:Models, Animal; D051381:Rats; D011914:Rats, Inbred BN; D017207:Rats, Sprague-Dawley
chemical_list: D000485:Allergens