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Powszechnie stosowane kryterium rozpoznawania przypadków toksoplazmozy ostrej na podstawie obecności swoistych IgM w surowicy badanej osoby bywa zawodne. Dokładniejszy sposób określania terminu zarażenia toksoplazmą polega na oznaczeniu awidności swoistych przeciwciał klasy IgG. Metoda oznaczania awidności powinna być wykorzystywana podczas badania ciężarnych podejrzanych o inwazję pierwotną, umożliwia bowiem niejednokrotnie wykluczenie ryzyka zarażenia płodu.
A total of 37 serum samples from pregnant women were examined for the avidity of toxoplasma IgG antibodies using commercially available enzyme immunoassay (Vidas Toxo TgG Avidity, bio Merieux). Low values of the avidity index were found for 4 samples and borderline ones were found in further 3 cases. Out of 19 serum samples showing the presence of IgG and IgM toxoplasma antibodies, 13 had high avidity index, including 9 samples from women in the first trimester of pregnancy. The results of examinations in these 9 cases allowed to exclude the possibility that toxoplasma infection was acquired during gestation. It is to be concluded that determinations of antitoxoplasma IgG avidity should become routine in every pregnant woman positive in the test for specific IgM antibody.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Numer
Strony
295-300
Opis fizyczny
s.295-300,tab.,bibliogr.
Twórcy
autor
- Panstwowy Zaklad Higieny, 00-791 Warszawa, ul.Chocimska 24
autor
autor
Bibliografia
- 1. Brooks RG, McCabe RE, Remington JS. Role of serology in the diagnosis of toxoplasmic lymphadenopathy. Rev Infect Dis 1987; 9: 1055-62.
- 2. Del Bono V, Canessa A, Bruzzi P, Fiorelli MA, Terragna A. Significance of specific immunoglobulin M in the chronological diagnosis of 38 cases of toxoplasmic lymphadenopathy. J Clin Microbiol 1989; 27: 2133-35.
- 3. Desmonts G, Couvreur J. Toxoplasmosis in pregnancy and its transmission to the fetus. Bull N Y Acad Med 1974; 50: 146-159.
- 4. Hebrink P, van Loon AM, Rotmans JP, van Knapen F, van Dijk WC. Interlaboratory evaluation of indirect enzyme-linked immunosorbent assay, antibody capture enzyme-linked immunosorbent assay, and immunoblotting for detection of immunoglobulin M antibodies to Toxoplasma gondii. J Clin Microbiol 1987; 25: 100-5.
- 5. Hedman K, Lappalainen M, Seppala I, Maketa O. Recent primary toxoplasma infection indicated by a low avidity of specific IgG. J Infect Dis 1989; 159: 736-40.
- 6. Holliman RE, Raymond R, Renton N, Johnson JD, The diagnostic of toxoplasmosis using IgG avidity. Epidemiol Infect 1994; 112: 399-408.
- 7. Jenum PA, Stray-Pedersen B, Gundersen AG. Improved diagnosis of primary Toxoplasma gondii infection in early pregnancy by determination of antitoxoplasma immunoglobulin G avidity. J Clin Microbiol 1997; 35: 1972-77.
- 8. Pelloux H, Brun E, Vemet G, Marcillat S, Jolivet M, Guergour D, Fricker-Hidatgo H, Goullier-Fleuret A, Ambroise-Thomas P. Determination of anti-Toxoplasma gondii immunoglobulin G avidity: adaptation to the vidas system (bioMerieux). Diagn Microbiol Infect Dis 1998; 32: 69-73.
- 10. Pinon JM, Thoannes H, Gruson. An enzyme-linked imrmino-filtratio assay used to compare infant and maternal antibody profiles in toxoplasmosis. J Immunol Methods 1985; 77:15-23.
- 11. Radkowski M, Roger S, Żarnowska H, Cholewińska G, Olszyńska M, Dziubek Z, Ślusarczyk J. Oznaczanie widności przeciwciał w diagnostyce toksoplazmozy. Pol Tyg Lek 1996; 23-26: 336-37.
- 12. Remington JS, Desmonts G. Toxoplasmosis; in: Infectious diseases of the fetus and newborn infant, ed. Remington JS, Klein JO, W.B. Saunders Company, Philadelphia, 1990, 89-195.
- 13. Sensini A, Pascoli S, Marchetti D, Castronari R, Marangi M, Sbaraglia G, Cimmino C, Favero A, Castelleto M, Mottola A. IgG avidity in the serodiagnosis of acute Toxoplasma gondii infection: a multicenter study. Clin Microbiol Infect 1996; 2: 25-29.
- 14. Sulzer A, Franco EL, Takafuji E, Benenson M, Walls KW, Greenup RL. An oocyst-transmitted outbreak of toxoplasmosis: patterns of immunoglobulin G and M over one year. Am J Trop Med Hyg 1986; 35: 290-96.
Typ dokumentu
Bibliografia
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Identyfikator YADDA
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