Establishment and preliminary mechanism study of the zebrafish strain of KIAA0196: A candidate pathogenic gene for heart development / 中南大学学报(医学版)

To explore the effects of KIAA0196 gene on cardiac development and the establishment of zebrafish strain.
 Methods: Peripheral blood and gDNA from patients were extracted. Copy number variation analysis and target sequencing were conducted to screen candidate genes. The KIAA0196 knockout zebrafish was generated by CRISPR/Cas9 to detect whether KIAA0196 deficiency could affect cardiac development. Finally, the wild-type and mutant zebrafish were anatomized and histologically stained to observe the phenotype of heart defects.
 Results: The KIAA0196 knockout zebrafish strain was successfully constructed using CRISPR/Cas9 technology. After 60 hours fertilization, microscopic examination of KIAA0196 knockout zebrafish (heterozygote + homozygote) showed pericardial effusion, cardiac compression and severely curly tail. Compared with wild-type zebrafish, the hearts of mutant KIAA0196 zebrafish had cardiac defects including smaller atrium and larger ventricle, and the myocardial cells were looser.
 Conclusion: KIAA0196 gene plays an important regulatory role in the development of heart. It might be a candidate gene for congenital heart disease.

Influence of different kinds of ovulation promotion scheme on clinical outcome of patients with IVF-ET/ICSI and POR / 中国医师进修杂志

Objective@#To investigate the influence of routine antagonist and optimization super-long termovulation promotion scheme on clinical outcome of patients with IVF-ET/ICSI and POR.@*Methods@#One hundred and thirty patients with IVF-ET/ICSI and POR were chosen in the period from October 2014 to May 2016 and randomly divided into two groups including control group (65 patients) with routine antagonist scheme and observation group (65 patients) with optimization super-long term scheme for ovulation promotion; and the number and total dose of Gn application, endometrium thickness and P levels in HCG day, the number of ovum retrieved, the incidence of premature LH peak, fertilization rate, quality embryo rate, cycle cancellation rate, implantation rate, clinical pregnancy rate, abortion rate and ectopic pregnancy rate of two groups were compared.@*Results@#The number and total doses of Gn application of observation group were significant higher than those of control group:(12.50 ± 1.78) d vs.(8.16 ± 1.25) d, (4 272.81 ± 547.95) U vs. (1 909.13 ± 341.48) U (P<0.05). The endometrium thickness and P levels in HCG day of observation group were significant lower than those of control group: (12.86 ± 1.39) mm vs. (10.08 ± 1.02) mm, (0.43 ± 0.17) nmol/L vs. (0.60 ± 0.22) nmol/L (P<0.05). There was no significant difference in the number of ovum retrieved, the incidence of premature LH peak and fertilization rate between two groups (P > 0.05). The quality embryo rate and cycle cancellation rate of observation group was significant lower than that of control group (P<0.05). The implantation rate and clinical pregnancy rate of observation group were significant higher than that of control group (P<0.05).There was no significant difference in the abortion rate and ectopic pregnancy rate between two groups (P > 0.05).@*Conclusions@#Compared with routine antagonist scheme, optimization super-long termscheme for ovulation promotion in the treatment of patients with IVF-ET/ICSI and POR can efficiently improve the ovulation effects and increase the long-term pregnancy rate, but has the higher overall treatment cost.

Comparative Study on Water Soluble Extract and Total Flavonoid Content between Jinzhen Suanzao Teabag and Decoction / 中国药房

OBJECTIVE:To compare the quality control index between Jinzhen Suanzao teabag and decoction,and explore the alternative supplement of teabag to decoction. METHODS:The test sample solutions of Jinzhen Suanzao teabag and decoction were prepared by hot-maceration method and water-decoction method. The contents of water soluble extract and total flavonoids were de-termined and compared between 2 kinds of preparation. The leaching rates of teabag were investigated at different soak time(0,5, 10,15,20,25,30 min) to optimize soaking time. RESULTS:The average content of water soluble extract were 50.56% and 44.45%(P<0.05) respectively for the teabag and decoction. The total flavonoids content were 0.64 mg/g and 0.69 mg/g (P<0.05). The dissolution amount of teabag were increasing and leaching rate increased within first 20 min,and reached balance gradu-ally 25 min later. CONCLUSIONS:According to the convenience of use and results of each index,the difference in quality control index is not great between 2 kinds of preparation. Teabag can be as the supplement of decoction.