促血管生成素評估IVF患者子宮內(nèi)膜血管形成及內(nèi)膜容受性
[Abstract]:AIM: To investigate the expression of angiopoietins (Angs) and endometrial microvessel density (MVD) during the implantation window stage of embryos in vitro fertilization embryo transfer (IVF-ET) and to elucidate the relationship between Ang-1 and Ang-2 assessors. Methods: From August 2014 to December 2014, IVF assisted pregnancy patients were selected from the Department of Reproductive Medicine, the Fourth Hospital of Hebei Medical University. They were 20-35 years old and had normal menstrual cycle with a period of 21-35 days. Endometrium was harvested at the stage of IVF embryo implantation window. Samples were frozen at - 80 C and some tissues were fixed with 4% formaldehyde. Ang-1 and Ang-1 in endometrium were determined by reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry, respectively. Endometrial MVD was determined by immunohistochemical staining. Immunohistochemical staining: Endometrial tissues were embedded in paraffin fixed with 4% formaldehyde to prepare 4 micron thick serial sections. HE and immunohistochemical staining were performed respectively. PBS were used as negative control. Each staining sheet was randomly selected from 5 visual fields and the results were analyzed. The endometrial tissues of the study group and the control group were added to the Rezol 1 ml homogenizer for full homogenization, total RNA was extracted, 0.5 mu 1 was retrieved, and the cDNA was obtained by reverse transcription. The amplified fragment length of GAPDH was 605 BP as internal reference. Ang-1 and Ang-2 PCR cycle strips The products were photographed and analyzed by VDS image analysis system after 1.5% agarose gel electrophoresis. The IOD value was corrected by internal reference, and the corrected value was statistically analyzed. Controlled hyperstimulation: All patients were used. Leuprorelin acetate (Beijing Boente Pharmaceutical Co., Ltd.) was administered 6-7 days after ovulation (mid-luteal phase) at a dose of 1.3 mg. The recombinant human follicle-stimulating hormone injection 150-225IU (Merck-Sherano, Italy) was administered at a reduced regulatory level. Transvaginal ultrasound was used to monitor endometrial changes and follicular growth. At least two follicles with a diameter greater than 20 mm were injected with AIZE 250 UG at night. The eggs were taken about 37 hours after AIZE injection and fertilized in vitro. Three days after oocyte retrieval, two high-quality embryos were transplanted. The pregnancy sacs were detected by transvaginal ultrasound 28 days after transplantation. All data were analyzed by SPSS13.0 statistical software. Statistical analysis. Measurement data were expressed by X There was no significant difference in age, duration of infertility, causes of infertility, basal FSH, basal LH and number of sinus follicles between the two groups (P 0.05). Significance (P 0.05). (See Table 2)3 Immunohistochemical detection of Ang-1, Ang-2 and MVD expression in endometrial stromal cells, glandular epithelial cells and vascular endothelial cells of pregnant and non-pregnant embryos in preimplantation window stage. There were 1 case of expression, "+" expression in 2 cases, "++" expression in 5 cases, "++" expression in 4 cases. Ang-2 was mainly expressed in endometrial stromal cells and glandular epithelial cells in clinical pregnancy. There was no significant difference in the expression of'-', 2'+', 3'+,'+', 5'+', 2'++', 3'-,'+', 6'+,'+', 2'++', 2'++', 2'+++'and 2'++++' in clinical pregnancy group (n = 13), 3.3.3 in non-pregnancy group (n = 13), 6 in'+', 2 in clinical pregnancy group (P = 0.335). MVD was detected by endothelial cells. The expression of microvessels in the endometrium was abundant in the periglandular matrix during the embryo implantation window. The expression of MVD (16.42 + 4.66) in pregnant group was higher than that in non-pregnant group (12.31 + 4.40), and the difference was statistically significant (P Ang-1 mRNA and Ang-2 mRNA expression in endometrium of clinical pregnancy group at implantation window stage were significantly higher than those of non-pregnancy group. Ang-1 mRNA expression was 0.72+0.35 (n=12) in pregnancy group and 0.33+0.32 (n=13) in non-pregnancy group. The difference was statistically significant (P=0.008). (See Table6) 4.2 Ang-2 mRNA expression in clinical pregnancy group. The expression of Ang-1 and Ang-2 was 0.6510.60 (n=12) in the endometrium of 5.1 IVF patients during implantation window, and the correlation between Ang-1 protein expression and MVD was 0.564 (P=0.003), respectively. The correlation coefficient between Ang-2 protein expression and MVD was 0.273, P = 0.187 in the endometrium of 5.2 IVF patients at implantation window stage, and there was no significant difference (see Table 8). Conclusion: Ang-1 protein was expressed in endometrial stromal cells, glandular epithelial cells and vascular endothelial cells at implantation window stage of preimplantation cycle. Ang-1 mRNA may be one of the endometrial receptivity-related genes. High expression of Ang-1 mRNA is more conducive to embryo implantation and has a better pregnancy outcome. Ang-1 mRNA may be one of the predictors of pregnancy outcome in IVF patients during implantation window. 3 Ang-2 protein is mainly expressed in endometrial stromal cells and endometrial stromal cells during implantation window. The expression of 4 Ang-2 mRNA in the endometrium of pregnant and non-pregnant embryos during the implantation window period was not different, and could not predict the pregnancy outcome of IVF patients. However, the mechanism and significance of Ang-2 mRNA in the evaluation of endometrial receptivity need to be further explored. MVD in the endometrium of pregnant women was significantly higher than that of non-pregnant women. MVD may be one of the predictors of pregnancy outcome. Ang-1 protein expression in the endometrium during implantation window was significantly correlated with MVD, but Ang-2 protein expression was not correlated with MVD. Endometrial rich blood perfusion is beneficial to embryo implantation.
【學位授予單位】:河北醫(yī)科大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:R714.8
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