J 2012

The effect of the swim-up and hyaluronan-binding methods on the frequency of abnormal spermatozoa detected by FISH and SCSA in carriers of balanced chromosomal translocations

VOZDOVÁ, Miluše; Kateřina KAŠÍKOVÁ; Eva ORÁČOVÁ; Petra PŘINOSILOVÁ; Roman RYBÁŘ et al.

Základní údaje

Originální název

The effect of the swim-up and hyaluronan-binding methods on the frequency of abnormal spermatozoa detected by FISH and SCSA in carriers of balanced chromosomal translocations

Autoři

VOZDOVÁ, Miluše; Kateřina KAŠÍKOVÁ; Eva ORÁČOVÁ; Petra PŘINOSILOVÁ; Roman RYBÁŘ; Věra HOŘÍNOVÁ; Renata GAILLYOVÁ a Jiří RUBEŠ

Vydání

HUMAN REPRODUCTION, 2012, 0268-1161

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30214 Obstetrics and gynaecology

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 4.670

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14110/12:00059293

Organizační jednotka

Lékařská fakulta

Klíčová slova anglicky

sperm selection; balanced translocation; FISH; chromatin integrity; meiotic segregation

Příznaky

Mezinárodní význam
Změněno: 18. 6. 2012 09:08, Mgr. Michal Petr

Anotace

V originále

The swim-up and hyaluronan (HA)-binding methods are used for the selection of good quality spermatozoa to improve pregnancy rates and embryo quality and to reduce the number of miscarriages after IVF. We evaluated whether the processing of sperm by these methods reduces the frequency of spermatozoa with abnormal karyotypes and altered chromatin quality in balanced translocation carriers. Semen samples of 12 carriers of balanced chromosomal translocations were analysed for the frequency of spermatozoa, which are chromosomally unbalanced due to the segregation of balanced translocations, aneuploidies for chromosomes 7, 8, 13, 18, 21, X or Y, diploid sperm or sperm with fragmented DNA and poorly condensed chromatin. Results obtained by fluorescence in situ hybridization (FISH) and sperm chromatin structure assay were compared between ejaculated (n = 12), swim-up (n = 12) and HA-binding processed (n = 6) semen samples of the translocation carriers and with the control group (n = 10).The mean frequencies of unbalanced segregation products were 17.5 and 16.5% in neat and swim-up processed samples from Robertsonian translocation carriers, and 55.4, 54.5 and 50.9% in neat, swim-up and HA-bound sperm samples from reciprocal translocation carriers. Significant decreases in the frequency of sperm showing chromosome 18 and XY disomy and of diploidy, and in the rates of high-density staining sperm were observed in the motile swim-up fractions. There were significantly more sperm showing fragmented chromatin in the group of translocation carriers than in the control group, but no differences in the aneuploidy and diploidy rates were observed.The swim-up method is suitable for selection of sperm with condensed chromatin and a lower frequency of some aneuploidies and of diploidy. The frequency of spermatozoa chromosomally unbalanced due to the segregation of reciprocal (but not Robertsonian) translocations is significantly lower in HA-bound sperm. However, the advantages of either method for selecting normal sperm are limited.