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Zapytanie: JENDRASZAK
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Tytuł oryginału: Plasma membrane translocation of phosphatidylserine in human spermatozoa.
Autorzy: Kotwicka M[ałgorzata], Jendraszak M., Warchoł J[erzy] B.
Źródło: Folia Histochem. Cytobiol. 2002: 40 (2) s.111-112, il., bibliogr. 11 poz. - Konferencja pt. Cytometria przepływowa i ilościowa, mikroskopia w diagnostyce medycznej Poznań 21-22.05. 2001
Sygnatura GBL: 304,846

Hasła klasyfikacyjne GBL:
  • urologia

    Typ dokumentu:
  • praca związana ze zjazdem
  • praca doświadczalna
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie
  • in vitro

    Streszczenie angielskie: The purpose of the study was to examine the phosphatidylserine translocation in human spermatozoa membrane during capacitation. Material consisted of human semen from normozoospermc men. Spermatozoa were stained with fluorescein-labelled annexin V. The presence and distribution of annexin V binding sites were analysed using the fluorescence micoroscope. Within first 60 min after ejaculation, 5 - 39 proc. viable annexin V-positive spermatozoa were detected. The annexin V binding sites were found mainl in the midpiece. After 4 to 8 h of incubation of spermatozoa in capacitation medium (BMI), the number of cells positively stained with annexin V increased. After capacitation, the localisations of phosphatidylserine was changed and the annexin V binding sites were found also in the acrosomal region but never in the equatorial area. The process of the phosphatidylserine translocation observed during our experiments may reflect changes of the plasma membrane occurring during capacitation or, less likely, apoptosis of spermatozoa.

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