Origin: Derived at Biological Research Laboratories Limited (BRL), formerly RCC, now Harlan Laboratories Ltd., Füllinsdorf, Switzerland from original colony at Zentralinstitute für Versuchstierzucht, Hannover in 1989. Abstract: Adult male Han/Wistar rats were administered 2,3,7,8‐tetrachlorodibenzo‐p‐dioxin (TCDD) intraperitoneally at doses ranging from 125 to 1400 μg/kg and monitored for 39 to 48 days. Ninety-day oral toxicity studies on two genetically modified maize MON810 varieties in Wistar Han RCC rats (EU 7th Framework Programme project GRACE). Sperm positive female Wistar Han/RccHan:WIST rats were obtained from Harlan Laboratories GmbH, Serumweg 48, 27324 Eystrup, Germany in multiple deliveries. Incidences of Neoplasms and Non-neoplastic Lesions of the Testis and Ovary in Wistar Han Rats in the Two-year Gavage Study of Tetrabromobisphenol A .....40 Table 8. One conventional 2-fed female rat developed a pituitary haemangioma and one 11 % GMO-fed female rat a yolk sac carcinoma, a rare spontaneous neoplasm of germ cell origin (Sobis 1987 ; Nakazawa et al. Furthermore, age-related changes and sex differ-ences in serum chemistry values in sd rats have been reported [18]. Furthermore, concern has been expressed that children might be at higher risk to acrylamide due to Arch Toxicol. Based on these results, some strain differences might be ascribable to reduced food consumption and associated body weight changes in Wistar Han rats. Wistar Han rats were selected due to their longevity and low incidence of Leydig cell tumors. Thus, these findings support the use of Wistar Han RCC rats in chronic toxicity and carcinogenicity studies. Key words:Wistar Hannover rat, Sprague Dawley rat, Background data, General toxicity II: Chronic Dosing Causes Developmental Delay 1998). Outbred Rats - RccHan:WIST - 168. Furthermore, concern has been expressed that children might be at higher risk to acrylamide due to greater dietary acrylamide intake (EPA Science Advisory Board, 2008). Wistar Han RCC rats at the end of both feeding trials The mycotoxins fumonisin B1, fumonisin B2 and deox- reached a value of about 410–430 g/animal, while that of ynivalenol were detected in some of the diets, although at the female rats was about 250 g/animal. 5-week-old male and female Wistar Han RCC rats were pur - chased from Harlan (San Pietro al Natisone, Italy). Survival and Body Weights of Mice in the Three-month Gavage Study of At gestation day (GD) 6, pregnant dams were provided acrylamide in their drinking water. The data from Wistar Han rats were compared with those from Sprague Dawley Crl:CD(SD) rats. 1. Morphological aberration in Control and Treated Groups. Differential performance of Wistar Han and Sprague Dawley rats in behavioral tests: differences in baseline behavior and reactivity to positive control agents Reprod Toxicol . Epub 2018 May 31. In both strains, females were more affected, but the sex difference was Table 1: Incidence and cellular distribution of pigment deposits in the liver of Han Wistar rats in short term studies. 2018 Jul;92(7):2385-2399. doi: 10.1007/s00204-018-2230-z. 2011 ). Our researchers recently completed a two-year study of 130 male and 130 female Envigo RccHan®:WIST (Wistar Han®) rats and compared them to other outbred rats (e.g., Sprague-Dawley®, Fischer 344).Here, we share the results of the study. Table III. Differential performance of Wistar Han and Sprague Dawley rats in behavioral tests: differences in baseline behavior and reactivity to positive control agents. Wistar Institute (USA) Han Wistar breeding movement Wistar breeding movement 1995 2004 1982 1968 1989 1994 1993 1996 The Wistar Hannover source colony was originally ... Wistar Hannover rats make it an exceptional strain for carcinogenicity testing, relative to … Not all people looking for information on Wistar Rats are looking for information on Lab Rats in general, not to mention an image of a dissected one. Each member of GALAS received 50 breeding stock from RCC in 1998. It has the distinct honor of being the first rat stock developed to serve as a model animal. J. Taconic replaced its previous Wistar Hannover stock with Wistar Hannover … Popularity of Han Wistar rats – reproductive toxicity studies UK* Studies completed 2009 – 2013 * Main plus preliminary studies combined count. ... Wistar is outbred (as is Wistar Han, Wistar unilever...), but Wistar Furth, Wistar Kyoto etc are inbred. We report here the oncogenic response of Wistar Han rats to orally administered acrylamide. The study design, the performance and the results of the feeding trials Table 1 Maize variety content of the different diets used in the rat feeding trials D and E aNear-isogenic maize variety of DKC6667 YG, from Monsanto As a result, body weights and food consumption in Wistar Han rats were lower than those of SD rats. The rats were derived by caesarean in 1999. Differences in Types and Incidence of Neoplasms in Wistar Han and Sprague-Dawley Rats. Multivariate t-pattern analyses demonstrated a very different temporal profile of behavior in the two strains: Wistar rats presented 197 t-patterns of different composition, whereas DA/Han rats only 26; as to the mean number of t-patterns, Wistar presented a value of 698.90, whereas DA/Han only 92.80. rats [14], but published historical data on wistar Han-nover rats relating to a general toxicity study are scarce [21]. The rats were refreshed with cryopreserved embryos in 1998. Humoral and cellular immune response in Wistar Han RCC rats fed two genetically modified maize MON810 varieties for 90 days (EU 7th Framework Programme project GRACE). We report here the oncogenic response of Wistar Han rats to orally administered acrylamide. Han/Wistar (Kuopio ) rats have a mutated AhR (AhR hw/hw) while Long‐Evans rats have wild type AhR (AhR wt/wt) (Pohjanvirta et al . Differences in the incidences of fetal malformations have also been shown to occur between Han/Wistar (Kuopio ) rats and Long‐Evans rats … Int. Wistar rat is another common hybrid albino model animal. The selection of your animal model for toxicity and carcinogenicity testing plays an essential role in the accuracy of your study findings. Chronic prostatitis characterized on light microscopic examination by moderate, multifocal, predominantly lymphocytic inflammation associated with epithelial atypia and … [Amy Zmarowski, Manon Beekhuijzen, Joost Lensen, Harry Emmen] PMID 22664268 An outbred Wistar rat strain (CRL:WI(Han)) was used to ensure comparability with (1) previous use of Wistar rats (Faqi et al., 1998) and (2) extensive in-house experience with this strain. Use an outbred stock of rat such as the Wistar Han or the Sprague Dawley NTP temporarily switched to the F344/NTac rat and then selected the Wistar Han rat [Crl:WI (Han)]. The substrains of Wistar rats: Wistar Hannover (Han/Wistart) and Wistar Unilever (WU) rat are outbred; while Wistar Kyoto and Wistar … [ Wistar Institute] Table II. Wistar Han rats were selected due to their longevity and low incidence of Leydig cell tumors. Taconic received breeding stock from RCC in 1998. Morphol., 27(1):7-11, 2009. To explain this apparent sex-dependence, the disposition and toxicokinetic profile of TBBPA were investigated using female Wistar Han rats, as no data were available for female rats. Two rats succumbed in the course of the experiment: one in the group receiving 625 and one dosed 1000 μg/kg. In addition, the effects of restricted feeding of SD rats were also investigated by one facility. Average and Range Weights Male and Female Wistar and Sprague Dawley Rats from 3 to 12 Weeks held at ARC (updated yearly) Average and Range of Weights (g) of Commonly Used Strains of Mice* & ADENIJI, D. A. Morphological characteristics and haematological studies in Wistar rats subjected to prolonged treatment of chloramphenicol. OYEYEMI, M. O. The incidence of adenocarcinoma, while higher in SD strains, varies dramatically between different SD strains/suppliers, with approximately 22% reported in Crl: CD(SD) rats ( Charles River 2004 ) compared with 13% in Hsd: SD rats … Haematological results of Wistar rats treated with chloramphenicol. 1998 ; Sakamoto et al. Wistar Han Rats in the Two-year Gavage Study of Tetrabromobisphenol A .....37 Table 7. Both the incidence and severity of this change were higher in Han Wistar than in Sprague-Dawley rats. 2012 Sep;34(2):192-203. doi: 10.1016/j.reprotox.2012.05.091. Prevalence and influence of cys407* Grm2 mutation in Hannover-derived Wistar rats: mGlu2 receptor loss links to alcohol intake, risk taking and emotional Wistar rats: ( wis'tehr ), an inbred strain of rats, homozygous at most loci, produced by strict brother-sister inbreeding over many generations to develop animals for research with the same general genetic composition. 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