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Wyszukujesz frazę "human spermatozoa" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Effect of low-frequency electric field screening on motility of human sperm
Autorzy:
Górski, R.
Kotwicka, M.
Skibińska, I.
Jendraszak, M.
Wosiński, S.
Powiązania:
https://bibliotekanauki.pl/articles/2085910.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
human spermatozoa
male infertility
50 Hz EMF – 50 Hz electromagnetic field
dielectric screen
ADR Technology®
Opis:
Introduction. The human body is constantly exposed to an extremely low electromagnetic field (ELF-EMF), in particular at 50 Hz, emitted by power lines, domestic distribution lines, electrical appliances, etc. It is assumed that the increase in electromagnetic exposure may cause adverse effects upon human health, as well as raising concerns regarding the impact on human fertility. Objective. The aim of this in vitro study was to investigate the influence of ELF-EMF with a frequency of 50 Hz on the motility of human sperm. At the same time, the effectiveness of the dielectric screen constructed by ADR Technology® in absorbing the emitted radiation was examined. Materials and method. Semen samples of 20 patients were exposed to the influence of an extremely low electromagnetic field. After 5, 15 and 30 min., spermatozoa motility was analysed using a computer-assisted spermatozoa motility analysis system. The following sperm motility parameters were examined: 1) velocity straight linear motility; 2) cross-beat frequency; 3) lateral head displacement; 4) homogeneity of progressive motility velocity. Results. It was found that the ELF-EMF presented a negative effect on the motility of human spermatozoa. A significant decrease in spermatozoa motility speed and a significant increase in lateral head deviation values were observed under the influence of the electromagnetic field. ELF-EMF did not show an effect on either lateral head displacement or homogeneity of progressive motility velocity. Conclusions. A positive effect of the dielectric screen ADR Technology® was found. This effect compensated spermatozoa motility changes induced with ELF-EMF.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 427-434
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High levels of bulky DNA adducts in human sperm correlate with impaired fertility.
Autorzy:
Horak, Stanisław
Polańska, Joanna
Widłak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1043666.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
fertility
spermatozoa
human
DNA damage
adducts
32P-postlabelling
Opis:
Progressive decline in fertility and sperm quality has been reported over the last few decades, especially in industrialized nations. It has been proposed that exposure to factors that induce damage in DNA of spermatogenic cells may significantly contribute to impaired fertility. Here, the 32P-postlabelling method was used to analyze the levels of bulky DNA adducts in sperm cells in a group of 179 volunteers, either healthy subjects or patients with an impaired fertility. The levels of DNA adducts were 1.35-fold higher in the infertile group as compared to healthy individuals (P = 0.012). Similarly, a significant negative correlation between the levels of DNA adducts and measures of semen quality (sperm concentration and motility) has been observed (P Ł 0.001). In addition, the levels of bulky DNA adducts in sperm cells positively correlates with amounts of leukocytes in semen, which were significantly higher in semen of infertile subjects.
Źródło:
Acta Biochimica Polonica; 2003, 50, 1; 197-203
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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