Zastosowanie metody PCR do wykrywania Listeria monocytogenes w mleku

• Autorzy: Wieckowska M. , Kotlowski R. , Kur J. , Rudnicka W.
• Języki publikacji: PL

Abstrakty

PL

Przeprowadzono elektroforetyczne i serologiczne badania porównawcze składu białek 6 szczepów M. pneumoniae i 1 szczepu M. genitalium. Stwierdzono pełne podobieństwo budowy antygenowej badanych szczepów M. pneumoniae oraz bliskie podobieństwo antygenowe M. genitalium do M. pneumoniae. Najbardziej swoistymi spośród antygenów M. pneumoniae okazały się białka o masie cząsteczkowej 170 (białko P1) i 89 kDa, uważane za najważniejsze adhezyny komórki mykoplazmowej.

EN

The Mycoplasma pneumoniae FH strain routinely used in our laboratory for over 25 years as antigen in serological tests, 2 reference M. pneumoniae strains from ATCC (29342 and M129) and 3 isolates of M. pneumoniae obtained in 1995 from pneumonia patients were compared by SDS-PAGE, complement fixation test (CFT) and by Western-immunoblotting against human and rabbit serum samples with high level of mycoplasmal antibodies. On SDS-PAGE all M. pneumoniae strains showed the same number of 23 polypeptides on the gel with identical molecular weights. The same strains on immunoblotting against human and rabbit serum samples showed six bands: 170, 89, 75, 55, 38 and 33 kDa with the strongest antibody staining in 170-(P1 protein) and 89-kDa bands. Because of its known antigenic relationships Mycoplasma genitalium was used for comparison. The pattern of M genitalium proteins on SDS-PAGE was similar to pattern of M. pneumoniae but distinguishable. On immunoblotting six proteins of M. genitalium (135, 127, 110, 95, 75 and 45 kDa) reacted with human and rabbits immunoglobulins for M. pneumoniae antigens. Furthermore in complement fixation test both antigens, prepared from M. pneumoniae and M. genitalium, reacted as well with human and rabbit immunoglobulins for M. pneumoniae and with rabbit immunoglobulins for M. genitalium. These cross-reactions observed in serological techniques could give false positive results in routine diagnosis of M. pneumoniae infections. In such situations showing on immunoblott of presence in tested serum sample of antibodies to 170 - and 89 kDa proteins could confirm M. pneumoniae infection.

Słowa kluczowe

PL

listerioza; choroby czlowieka; bakterie Gram-dodatnie; Listeria monocytogenes; lancuchowa reakcja polimerazy; badania mikrobiologiczne; mleko; oznaczanie

• Wydawca: -
• Czasopismo: Medycyna Doświadczalna i Mikrobiologia
• Rocznik: 1998
• Tom: 50
• Numer: 3-4
• Opis fizyczny: s.251-257,fot.,bibliogr.

Twórcy

autor

Wieckowska M.

• Uniwersytet Lodzki, 90-237 Lodz, ul.S.Banacha 12-16

autor

Kotlowski R.

autor

Kur J.

autor

Rudnicka W.

Bibliografia

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