HgCl2 challenge in Brown Norway rats lead to dermatitis instead of arthritis.
Standard
HgCl2 challenge in Brown Norway rats lead to dermatitis instead of arthritis. / Schümann, K; Lebeau, Annette; Ettle, T; Adam, O.
In: RHEUMATOL INT, Vol. 26, No. 5, 5, 2006, p. 393-395.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - HgCl2 challenge in Brown Norway rats lead to dermatitis instead of arthritis.
AU - Schümann, K
AU - Lebeau, Annette
AU - Ettle, T
AU - Adam, O
PY - 2006
Y1 - 2006
N2 - A wide range of methods are described to produce adjuvant arthritis in rats by antigen exposure. Studies using these methods are rarely controlled histologically though the result can be paw dermatitis instead of arthritis. Three male Brown Norway rats were injected s.c. with HgCl2 (1 mg Hg/kg body weight) on five alternating days following closely a well described scheme for induction of adjuvant arthritis. Extent of paw oedema was assessed sonographically. Location and extent of inflammatory responses were inspected histologically. Swollen reddish and painful paw oedema started to develop on day 13 increasing until day 16. Oedema increased skin-to-bone and skin-to-skin distance across the inflamed paws significantly. Histological examination on day 16 revealed marked dermatitis with dense cellular infiltrates, single cell necrosis and fibrin exudation. In contrast, no inflammatory responses were observed in the joints. Use of a well described scheme for induction of adjuvant arthritis produced dermatitis of the paw with identical time course, clinical and sonographic appearance as expected for arthritis. This observation strongly suggests the need to check the histology on location and the kind of inflammatory response when a model for adjuvant arthritis is altered or used for the first time.
AB - A wide range of methods are described to produce adjuvant arthritis in rats by antigen exposure. Studies using these methods are rarely controlled histologically though the result can be paw dermatitis instead of arthritis. Three male Brown Norway rats were injected s.c. with HgCl2 (1 mg Hg/kg body weight) on five alternating days following closely a well described scheme for induction of adjuvant arthritis. Extent of paw oedema was assessed sonographically. Location and extent of inflammatory responses were inspected histologically. Swollen reddish and painful paw oedema started to develop on day 13 increasing until day 16. Oedema increased skin-to-bone and skin-to-skin distance across the inflamed paws significantly. Histological examination on day 16 revealed marked dermatitis with dense cellular infiltrates, single cell necrosis and fibrin exudation. In contrast, no inflammatory responses were observed in the joints. Use of a well described scheme for induction of adjuvant arthritis produced dermatitis of the paw with identical time course, clinical and sonographic appearance as expected for arthritis. This observation strongly suggests the need to check the histology on location and the kind of inflammatory response when a model for adjuvant arthritis is altered or used for the first time.
M3 - SCORING: Zeitschriftenaufsatz
VL - 26
SP - 393
EP - 395
JO - RHEUMATOL INT
JF - RHEUMATOL INT
SN - 0172-8172
IS - 5
M1 - 5
ER -
