977 resultados para Error-correcting Codes
Resumo:
Pregnancy loss can be caused by several factors involved in human reproduction. Although up to 50% of cases remain unexplained, it has been postulated that the major cause of failed pregnancy is an error of embryo implantation. Transmembrane mucin-1 (MUC-1) is a glycoprotein expressed on the endometrial cell surface which acts as a barrier to implantation. The gene that codes for this molecule is composed of a polymorphic tandem repeat of 60 nucleotides. Our objective was to determine if MUC-1 genetic polymorphism is associated with implantation failure in patients with a history of recurrent abortion. The study was conducted on 10 women aged 25 to 35 years with no history of successful pregnancy and with a diagnosis of infertility. The control group consisted of 32 patients aged 25 to 35 years who had delivered at least two full-term live children and who had no history of abortions or fetal losses. MUC-1 amplicons were obtained by PCR and observed on agarose and polyacrylamide gel after electrophoresis. Statistical analysis showed no significant difference in the number of MUC-1 variable number of tandem repeats between these groups (P > 0.05). Our results suggest that there is no effect of the polymorphic MUC-1 sequence on the implantation failure. However, the data do not exclude MUC-1 relevance during embryo implantation. The process is related to several associated factors such as the mechanisms of gene expression in the uterus, specific MUC-1 post-translational modifications and appropriate interactions with other molecules during embryo implantation.
Resumo:
1934/12 (A41,T19,N12).
Resumo:
1915/09 (T6,A27,N9)-1915/10 (T6,A27,N10).
Resumo:
1915/05 (T6,A27,N5).
Resumo:
1934/01 (A46,FASC1,N8962)-1934/02 (A46,FASC2,N8979).
Resumo:
1905/10 (A12,N10).
Resumo:
1931/09 (A43,FASC9,N8576)-1931/10 (A43,FASC10,N8598).
Resumo:
1905/04 (A12,N4).
Resumo:
1931/07 (A43,FASC7,N8537)-1931/08 (A43,FASC7,N8575).
Resumo:
1896/08 (A3,N16).
Resumo:
1933/02 (T10,A45,FASC2).
Resumo:
1928/07 (A40,T8,FASC8).
Resumo:
1896/04 (A3,N14).
Resumo:
1895/12 (A2,N12).