scholarly journals Detecção de Mycoplasma pulmonis e Mycoplasma arthritidis no trato respiratório superior de ratos e bioteristas por cultivo e reação em cadeia da polimerase (PCR)

Author(s):  
Juliana Bonin Ferreira
1992 ◽  
Vol 15 (5) ◽  
pp. 411-415 ◽  
Author(s):  
Angela Ferebee ◽  
Philippe Simoneau ◽  
Jerjang Chang ◽  
Michael F. Barile ◽  
Ping-chuan Hu

1982 ◽  
Vol 152 (1) ◽  
pp. 538-541
Author(s):  
J D Pollack ◽  
P J Hoffmann

Extracts of the Mollicutes Acholeplasma equifetale, Acholeplasma laidlawii B, Mycoplasma arthritidis. Mycoplasma pulmonis, and Mycoplasma pneumoniae had DNase and endonuclease activity. A. laidlawii B had at least two peaks of DNase activity in sucrose gradients with sedimentation coefficients of 3.1S and 4.3S. These fractions also had endonuclease activity with different substrate specificities. A. laidlawii B may have more than two peaks of endonuclease activity in sucrose gradients.


1967 ◽  
Vol 1 (1) ◽  
pp. 43-54 ◽  
Author(s):  
R. J. Fallon

Summary Mycoplasmas are the smallest known free-living form of life, and differ from bacteria in a number of characteristics. They are widely distributed in the animal kingdom and may give rise to both acute and latent infections as well as being present as normal flora. The three principal rodent pathogens so far described are Mycoplasma pulmonis, Mycoplasma arthritidis and Mycoplasma neuroiyticum. The diseases associated with these organisms are discussed.


Author(s):  
Jorge Timenetsky ◽  
Maria Eugenia Laurito Summa ◽  
Rosália Regina de Lucca

Ratos e camundongos de três biotérios com e um sem barreiras microbianas foram bacteriologicamente estudados quanto à presença de micoplasma, através da perfusão de pulmão com lavado traqueobrônquico e lavado de ouvido. Caracterizou-se a presença destas bactérias pela formação de colônias em "ovo frito", coloração de Dienes, resistência à digitonina, catabolismo da glicose, hidrólise da arginina, redução do tetrazólio e produção de filme e manchas. A identificação das cepas isoladas foi através da inibição de crescimento. No biotério com barreiras microbianas, os micoplasmas não foram detectados. Entretanto, isolou-se Mycoplasma pulmonis e Mycoplasma arthritidis em biotérios sem barreiras. Nas instalações sem barreiras microbianas com amostragem representativa, detectou-se M. pulmonis em 20% dos camundongos Swiss, 14,28% na linhagem C57B1/6J e em 83,78% na amostragem dos ratos. Encontrou-se M. arthritidis em 5,4% dos ratos, através da lavagem de ouvido. Ambas as espécies estavam presentes em 2,7% dos ratos. Os anti-soros utilizados não identificaram uma cepa isolada de hamster. M. pulmonis foi identificado em ratos de um grupo de animais procedentes de outros 2 biotérios. A taxa de infecção por micoplasma não pôde ser estabelecida porque os ratos e camundongos foram especialmente selecionados para a pesquisa de micoplasma devido a sua origem a aspectos clínicos. Os autores sugerem que a pesquisa de micoplasma em animais de laboratório seja freqüente, com amostragem representativa e com a identificação destes microrganismos para o aprimoramento de seu controle.


2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity

1978 ◽  
Vol 253 (17) ◽  
pp. 6010-6015
Author(s):  
J.L. Weickmann ◽  
M.E. Himmel ◽  
P.G. Squire ◽  
D.E. Fahrney

1991 ◽  
Vol 174 (4) ◽  
pp. 891-900 ◽  
Author(s):  
S M Friedman ◽  
M K Crow ◽  
J R Tumang ◽  
M Tumang ◽  
Y Q Xu ◽  
...  

While all known microbial superantigens are mitogenic for human peripheral blood lymphocytes (PBL), the functional response induced by Mycoplasma arthritidis-derived superantigen (MAM) is unique in that MAM stimulation of PBL consistently results in T cell-dependent B cell activation characterized by polyclonal IgM and IgG production. These immunostimulatory effects of MAM on the humoral arm of the human immune system warranted a more precise characterization of MAM-reactive human T cells. Using an uncloned MAM reactive human T cell line as immunogen, we have generated a monoclonal antibody (mAb) (termed C1) specific for the T cell receptor V beta gene expressed by the major fraction of MAM-reactive human T cells, V beta 17. In addition, a V beta 17- MAM-reactive T cell population exists, assessed by MAM, induced T cell proliferation and cytotoxic T cell activity. mAb C1 will be useful in characterizing the functional properties of V beta 17+ T cells and their potential role in autoimmune disease.


1985 ◽  
Vol 95 (1) ◽  
pp. 7-14 ◽  
Author(s):  
D. Taylor-Robinson ◽  
Patricia M. Furr

SUMMARYMice of strain TO, in groups of ten, were inoculated intravaginally with Mycoplasma pulmonis organisms. Seven mice became infected after inoculation of organisms with strong haemadsorptive capacity, four after inoculation of organisms with diminished adsorptive capacity following ten passes in medium, and none after inoculation of apparently non-adsorbing organisms which had been passed 50 times. There appeared to be a correlation, therefore, between the ability to infect and the cytadsorptive capacity of the organisms. There was only a minimal vaginal polymorphonuclear leucocyte (PMNL) response in the infected mice and most of them had ceased to be infected by 35–42 days. In contrast, mice treated with progesterone had enhanced infections; all those given strongly haemadsorbing organisms, and organisms passed ten times, became infected and remained so for at least 42 days. Furthermore, at least ten fold more organisms were recovered from progesterone-treated than from untreated mice, and the PMNL response was much greater. Most of the progesterone-treated mice given organisms passed 50 times did not become infected, but some did, and the organisms recovered from them were fully cytadsorptive. It is postulated that a few cytadsorbing organisms in this inoculum were induced to infect under the enhancing effect of progesterone.


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