scholarly journals Efficacy of strain RB51 vaccine in protecting infection and vertical transmission against Brucella abortus in Sprague-Dawley rats

2009 ◽  
Vol 10 (3) ◽  
pp. 211 ◽  
Author(s):  
Md. Ariful Islam ◽  
Mst. Minara Khatun ◽  
Byeong-Kirl Baek ◽  
Sung-Il Lee
Keyword(s):  
Vertical Transmission ◽  
Brucella Abortus ◽  
Sprague Dawley ◽  
Sprague Dawley Rats

scholarly journals Plate and Tube Agglutination Tests for Diagnosis of Brucella abortus Biotype 1 Infection in Sprague-Dawley Rats

1970 ◽  
Vol 2 (1) ◽  
pp. 63-67 ◽  
Author(s):  
MS Rahman
Keyword(s):  
Antibody Titer ◽  
Brucella Abortus ◽  
Post Infection ◽  
Physiological Saline ◽  
Potential Candidate ◽  
Sprague Dawley ◽  
Sd Rats ◽  
Sprague Dawley Rats ◽  
Group A ◽  
Group B

The plate and tube agglutination tests were evaluated for the diagnosis of experimentally induced Brucella abortus biotype 1 infection in 45 female, 6 to 10 months old Sprague- Dawley (SD) rats during the period from 2001 to 2002. These 45 rats were divided into two groups A and B, of which group A consisting of 27 rats used for experimental infection, whereas 18 rats of group B served as uninfected control. Each rat of group A was injected subcutaneously @ 1.0×109 colony forming units (CFU) in 500 µl of bovine pathogenic strain of B. abortus biotype 1 suspension in physiological saline. The SD rats were monitored at regular intervals by serological and bacteriological methods. The reciprocal antibody titer was 1:400 through tube agglutination test (TAT) whereas it was 1:800 through plate agglutination (PAT) at first week of post-infection. There was no reciprocal antibody titer in sera of 24 weeks of post-infection both through PAT and TAT despite the presence of bacteremia and these tests were evaluated for the first time using sera from rat with brucellosis. PAT using B. abortus strain 1119-3 (S1119-3) whole cell antigen was a potential candidate as an improved diagnostic method for field diagnosis of brucellosis in wild animals. Key words: B. abortus biotype 1; plate and tube agglutination tests; Sprague-Dawley rats doi: 10.3329/bjvm.v2i1.1938 Bangl. J. Vet. Med. (2004). 2 (1) : 63-67

Effects of Brucella abortus Biotype 1 Infection on the Reproductive Performance of Sprague-Dawley Rats

2009 ◽  
Vol 12 (4) ◽  
pp. 353-359 ◽  
Author(s):  
Md. Ariful Isl ◽  
Mst. Minara Kha ◽  
Byeong Kirl Baek ◽  
Sung Il Lee
Keyword(s):  
Reproductive Performance ◽  
Brucella Abortus ◽  
Sprague Dawley ◽  
Sprague Dawley Rats

scholarly journals Polymerase chain reaction assay for the diagnosis of experimentally infected pregnant Sprague-Dawley rats with Brucella abortus biotype 1

2012 ◽  
Vol 49 (No. 7) ◽  
pp. 253-258
Author(s):  
Rahman MS
Keyword(s):  
Polymerase Chain Reaction ◽  
Brucella Abortus ◽  
Brucella Melitensis ◽  
Control Group ◽  
Sprague Dawley ◽  
Chain Reaction ◽  
Pcr Assay ◽  
Sd Rats ◽  
Sprague Dawley Rats ◽  
Polymerase Chain

In order to diagnose the experimentally infected pregnant Sprague-Dawley (SD) rats with Brucella abortus biotype 1 using polymerase chain reaction (PCR) assay, the SD rats were injected subcutaneously at the dose of 1.0 &times; 10<sup>9</sup> colony forming units (cfu) at different stages of gestation period. The maximum rectal temperature was recorded as 38&deg;C in the infected group within 3 days, whereas in the control group the temperature remained normal (36&deg;C). There were no stillbirths, abortions or premature birth and relapsing fever in the infected SD rats. The pathological findings of infected SD rats were splenomegaly, metritis, swelling of lymph nodes, placentitis associated with lymphocytic and macrophage infiltration. Four hundred ninety-eight base pair DNA was detected in infected tissues through AMOS (Brucella abortus, Brucella melitensis, Brucella ovis, Brucella suis) PCR assay. The AMOS PCR assay was shown to be a valuable tool for&nbsp;diagnosis of infected pregnant Sprague-Dawley rats with B.&nbsp;abortus biotype 1.

Ultrastructural Investigation of Spontaneous Pituitary Adenomas in Aging Sprague-Dawley Rats

1982 ◽  
Vol 40 ◽  
pp. 216-217
Author(s):  
D. J. McComb ◽  
J. Beri ◽  
F. Zak ◽  
K. Kovacs
Keyword(s):  
Microscopic Study ◽  
Pituitary Adenomas ◽  
Wistar Rats ◽  
Microscopic Level ◽  
Sprague Dawley ◽  
Prolactin Cells ◽  
Light Microscopic Level ◽  
Ultrastructural Investigation ◽  
Sprague Dawley Rats ◽  
Long Evans

Investigation of the spontaneous pituitary adenomas in rat have been limited mainly to light microscopic study. Furth et al. (1973) described them as chromophobic, secreting prolactin. Kovacs et al. (1977) in an ul trastructural investigation of adenomas of old female Long-Evans rats, found that they were composed of prolactin cells. Berkvens et al. (1980) using immunocytochemistry at the light microscopic level, demonstrated that some spontaneous tumors of old Wistar rats could contain GH, TSH or ACTH as well as PRL.

Early Development of Drug-Induced Hepatic Necrosis

1971 ◽  
Vol 29 ◽  
pp. 576-577
Author(s):  
F. G. Zaki ◽  
E. Detzi ◽  
C. H. Keysser
Keyword(s):  
Early Development ◽  
Hepatic Necrosis ◽  
Screening Tests ◽  
Dense Matrix ◽  
Sprague Dawley ◽  
Electron Microscopic ◽  
Drug Induced ◽  
Hepatocellular Damage ◽  
Sprague Dawley Rats ◽  
Microscopic Studies

This study represents the first in a series of investigations carried out to elucidate the mechanism(s) of early hepatocellular damage induced by drugs and other related compounds. During screening tests of CNS-active compounds in rats, it has been found that daily oral administration of one of these compounds at a dose level of 40 mg. per kg. of body weight induced diffuse massive hepatic necrosis within 7 weeks in Charles River Sprague Dawley rats of both sexes. Partial hepatectomy enhanced the development of this peculiar type of necrosis (3 weeks instead of 7) while treatment with phenobarbital prior to the administration of the drug delayed the appearance of necrosis but did not reduce its severity.Electron microscopic studies revealed that early development of this liver injury (2 days after the administration of the drug) appeared in the form of small dark osmiophilic vesicles located around the bile canaliculi of all hepatocytes (Fig. 1). These structures differed from the regular microbodies or the pericanalicular multivesicular bodies. They first appeared regularly rounded with electron dense matrix bound with a single membrane. After one week on the drug, these vesicles appeared vacuolated and resembled autophagosomes which soon developed whorls of concentric lamellae or cisterns characteristic of lysosomes (Fig. 2). These lysosomes were found, later on, scattered all over the hepatocytes.

Ultrastructural investigation of spontaneous pituitary gonadotroph cell adenomas in aging Sprague-Dawley rats

1983 ◽  
Vol 41 ◽  
pp. 702-703
Author(s):  
D. J. McComb ◽  
J. Beri ◽  
F. Zak ◽  
K. Kovacs
Keyword(s):  
Electron Microscopy ◽  
Animal Model ◽  
Epoxy Resin ◽  
Immunoelectron Microscopy ◽  
Tumor Type ◽  
Gonadal Function ◽  
Sprague Dawley ◽  
Male And Female ◽  
Reticulin Fibers ◽  
Sprague Dawley Rats

Gonadotroph cell adenomas of the pituitary are infrequent in human patients and are not invariably associated with altered gonadal function. To date, no animal model of this tumor type exists. Herein, we describe spontaneous gonadotroph cell adenomas in old male and female Sprague-Dawley rats by histology, immunocytology and electron microscopy.The material consisted of the pituitaries of 27 male and 38 female Sprague Dawley rats, all 26 months of age or older, removed at routine autopsy. Sections of formal in-fixed, paraffin-embedded tissue were stained with hematoxylin-phloxine-saffron (HPS), the PAS method and the Gordon-Sweet technique for the demonstration of reticulin fibers. For immunostaining, sections were exposed to anti-rat β-LH, anti-ratβ-TSH, anti-rat PRL, anti-rat GH and anti-rat ACTH 1-39. For electron microscopy, tissue was fixed in 2.5% glutaraldehyde, postfixed in 1% OsO4 and embedded in epoxy-resin. Tissue fixed in 10% formalin, embedded in epoxy resin without osmification, was used for immunoelectron microscopy.

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