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OBJECTIVE@#To assess the value of BACs-on-Beads (BoBs) technique for the detection of chromosomal abnormalities in abortus tissues from recurrent pregnancy loss.@*METHODS@#A total of 109 abortus samples were collected and analyzed with the BoBs technique. The incidence and types of chromosomal abnormalities for different age groups and gestational weeks were compared.@*RESULTS@#The BoBs assay has succeeded in all cases, with an incidence for chromosomal abnormalities reaching 62.39% (68/109). The major findings included trisomy 16 (12/68), trisomy 22 (9/68), trisomy 13 (9/68) and trisomy 21 (8/68). The abnormal rate was significantly higher in those above 35-year-old compared with that of the 0.05). The aberration rates were similar for samples derived from second, third and fourth time abortions (P>0.05).@*CONCLUSION@#BoBs technique can detect chromosomal aberrations in miscarriages and may be routinely used for the analysis of early spontaneous abortions.
Assuntos
Adulto , Feminino , Humanos , Gravidez , Aborto Habitual , Aborto Espontâneo , Transtornos Cromossômicos , Síndrome de Down , Cariotipagem , Diagnóstico Pré-NatalRESUMO
Polycystic ovary syndrome (PCOS) women often deal with the main characteristics of obesity, obesity is caused by the endocrine disorder, the menstrual cycle changes, etc. The main causes of infertility, easy cause anxiety, women have a negative impact on the quality of life through the fueling weight management of patients with PCOS were reviewed, summarized method, explore new train of thought, for fueling beset with PCOS patients provide better health and weight management method.
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Objective To verify the feasibility of Cas9 microinjection in frozen-thawed pronuclear embryos, based on the model of pronuclear embryos of C57BL/6J mice by in vitro fertilization.Methods After fertilized mouse pronuclear embryos cultured in vitro, one-cell and 2-cell embryos were frozen using EFS20/40 cryopreservation tube.The next day recovered and then cultured.The recovery rate and survival rate of the one-cell and 2-cell embryos were compared.The frozen-thawed and fresh pronuclear embryos were injected with Cas9 mixture and injection buffer into the cytoplasm, and then cultivated to 2-cell embryos,and the survival rate and development rate of the 2-cell embryos were compared.Results The recovery rate of frozen-thawed one-cell embryos was 92.5%, the survival rate was 92.8%, the recovery rate of 2-cell embryos was 90.5% and the survival rate was 95.8%, showing no significant difference.Furthermore, the survival rate of fresh one-cell embryos after Cas9 injection was 92.7%, the survival rate of one-cell embryos of the blank group was 97.5%.While the survival rate of Cas9 injected frozen-thawed one-cell embryos was 82.6%, and that of the blank group was 92%,showing a significant difference between the frozen-thawed injected group and other groups(P < 0.05).The development rate of 2-cell embryos after Cas9 injection was not significantly different.Conclusions Frozen-thawed pronuclear embryos can be used for Cas9 microinjection.
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AIM: To study the changes of neurokinin A (NKA) and NKA mRNA in lung tissues of asthmatic guinea pigs exposed to chronic cigarette smoke and investigate the mechanism. METHODS: The model of asthma in guinea pigs was made by exposure to aerosolized ovalbumin and animals were randomly assigned into: ① inhale cigarette smoke (ICS) 2 weeks before provoked; ② ICS 2 weeks after provoked; ③ 2 weeks after provoked (no-ICS); ④ asthma (no-ICS before provoked); ⑤ normal control. The contents of NKA in lung tissues were detected by ELISA and NKA mRNA expression was detected by reverse transcription-polymerase chain reaction. RESULTS: ① The levels of NKA and NKA mRNA expression in lung tissues of asthma group were significantly higher than those in normal control group (P