OBJECTIVE To determine the effect of basic fibroblast growth factor (bFGF) on the biological behaviour of ovarian epithelial neoplasm. METHODS Ten cases of normal ovarian tissues and eighty cases of ovarian epithelial tumor tissues were detected by immunohistochemical methods. Mias-2000 Picture Analysis System was used to study the relationship of bFGF expression intensity and microvessel count, FIGO stage, pathological grade and classification of ovarian epithelial neoplasm. RESULTS 1. Expression of bFGF was mainly in cytoplasm and nucleus in several cells of borderline and malignant tumor. 2. The expression intensity of bFGF was closely related to the malignant degree of ovarian epithelial neoplasm. The density of bFGF expression was (3.35 +/- 3.52)% in normal ovarian epithelium, (19.25 +/- 21.73)% in benign tumor, (33.78 +/- 10.86)% in borderline tumor and (48.18 +/- 12.93)% in malignant tumor. The results indicated that bFGF might play an important role in carcinogenesis of ovarian epithelial neoplasm. 3. The expression intensity of bFGF was increased with the FIGO stage of ovarian tumor. 4. The expression intensity of bFGF was increased accompanying with the decrease of differentiation degree in ovian neoplasm. 5. In borderline tumor, expression intensity of bFGF in serous cystadenoma was significantly higher than in mucinous cystadenoma, which indicated bFGF might be an important factor in canceration of ovarian epithelial neoplasm. CONCLUSION bFGF may play important roles in carcinogenesis, development, invasion and metastasis of ovarian epithelial neoplasm.
Objective To explore the value of multi-disciplinary team (MDT) for fertility preservation in patients with borderline ovarian tumor (BOT). Methods BOT patients who underwent MDT at West China Second University Hospital of Sichuan University between January 2020 and December 2022 were selected as the MDT group, while BOT patients who underwent surgery but did not undergo MDT during the same period were selected as the control group in a 1∶2 histological ratio. The clinical case data of two groups were retrospectively analyzed. The fertility assessment, implementation of fertility protection measures, and reproductive outcomes of two groups of patients were compared. Results A total of 24 patients were included in the MDT group, while 48 patients were included in the control group. There was no statistically significant difference in age of onset, marital status, preoperative carbohydrate antigen 199, carbohydrate antigen 125, surgical pathway, and International Federation of Gynecology and Obstetrics staging between the two groups of patients (P>0.05). The proportion of bilateral tumor involvement in the MDT group during the first surgery was higher than that in the control group (50.0% vs. 22.9%, P<0.05). In terms of fertility assessment, there was no statistically significant difference in the proportion of patients who underwent preoperative measurement of anti-Müllerian hormone between the two groups (P>0.05). The proportion of patients who underwent postoperative measurement of anti-Müllerian hormone in the MDT group was higher than that in the control group (100.0% vs. 37.5%, P<0.05). The proportion of patients in the MDT group who took fertility protection measures was higher than that in the control group (62.5% vs. 29.2%, P<0.05). There was no statistically significant difference in the proportion of successful pregnancies between the two groups of patients who were married (28.6% vs. 25.9%, P>0.05). Conclusion MDT is beneficial for improving the fertility assessment rate of BOT patients of childbearing age, providing personalized treatment plans, and taking timely measures to protect their fertility.
ObjectiveTo explore the corresponding intervention measures to reduce maternal mortality rate by analyzing the causes and problems of maternal deaths. MethodsA retrospective analysis was conducted to analyze all cases of maternal mortality from January 2005 to June 2013 in West China Second University Hospital. ResultsAmong the 14 cases of maternal deaths, the main diseases of the patients were pregnancy complicated with heart disease, hypertensive disorders, obstetric hemorrhage, amniotic fluid embolism and ectopic pregnancy. Four cases got prescriptive prenatal care during pregnancy, accounting for 28.6% (4/14), while 10 cases did not, accounting for 71.4% (10/14). Six patients died in prenatal period which accounted for 42.9% (6/14), while 8 died in postnatal period which accounted for 57.1% (6/14) and 5 died within 24 hours which accounted for 62.5% (5/8). Seven underwent cesarean section and 6 fetuses survived. Two went through trial of labor and no fetus survived. There was no ordered postmortem. ConclusionIntensifying education of prenatal care during pregnancy, improving quality of obstetrical service and diathesis of healthcare professionals, strengthening the supervision of high-risk pregnancy and timely choosing the time and manner of delivery are the main measures to decrease the maternal mortality.
Objective To explore a new teaching mode relying on the new media platform, aiming to stimulate residency standardized trainees’ interest in learning theories related to gynecology outpatient surgery, improve practical operation skills, and achieve better teaching effects. Methods The residency standardized trainees who rotate in the gynecology outpatient of West China Second University Hospital, Sichuan University between July 2021 and June 2022 were selected. According to the random number table method, the trainees were divided into the control group (using the traditional teaching mode) and the intervention group (using the teaching mode of combining the flipped classroom and simulated teaching relying on the new media platform). The assessment results, teacher evaluation, trainees self-evaluation and teaching satisfaction of the two groups were compared and analyzed. Results A total of 118 trainees were enrolled, 59 in each group. There was no significant difference in gender, age, years of training and education level between the two groups (P>0.05). The total scores of evaluation scores (87.59±4.54 vs. 85.17±3.70), teachers’ evaluation (87.05±3.79 vs. 85.14±3.75), and trainees’ self-evaluation (87.81±4.41 vs. 85.54±3.96) of trainees in the intervention group were better than those in the control group, and the differences were statistically significant (P<0.05). The clinical thinking ability [teachers’ evaluation (24.49±1.62 vs. 23.22±2.05), trainees’ self-evaluation (25.25±1.99 vs. 23.97±2.27) and operation skills [teachers’ evaluation (37.05±1.58 vs. 36.10±1.99), trainees’ self-evaluation (36.75±2.73 vs. 35.66±2.56)] of trainees in the intervention group were better than those in the control group, and the differences were statistically significant (P<0.05). The satisfaction rate of the trainees in the intervention group was 98.3%, and that of the trainees in the control group was 93.2%. The teaching satisfaction of the intervention group was better than that of the control group (P<0.05). Conclusion The teaching mode of combining flipped classroom and simulated teaching relying on the new media platform has effectively stimulated residency standardized trainees’ learning interest in gynecological outpatient surgery, improved trainees’ clinical practice ability, improved teaching satisfaction, achieved good teaching results, and can be promoted as a new teaching mode.
Objective To study the outcomes of nerve defect repair with the tissue engineered nerve, which is composed of the complex of SCs, 30% ECM gel, bFGF-PLGA sustained release microspheres, PLGA microfilaments and permeable poly (D, L-lacitic acid) (PDLLA) catheters. Methods SCs were cultured and purified from the sciatic nerves of 1-day-old neonatal SD rats. The 1st passage cells were compounded with bFGF-PLGA sustained release microspheres andECM gel, and then were injected into permeable PDLLA catheters with PLGA microfilaments inside. In this way, the tissueengineered nerve was constructed. Sixty SD rats were included. The model of 15-mm sciatic nerve defects was made, and then the rats were randomly divided into 5 groups, with 12 rats in each. In group A, autograft was adopted. In group B, the blank PDLLA catheters with PBS inside were used. In group C, PDLLA catheters, with PLGA microfilaments and 30% ECM gel inside, were used. In group D, PDLLA catheters, with PLGA microfilaments, SCs and 30% ECM gel inside, were used. In group E, the tissue engineered nerve was appl ied. After the operation, observation was made for general conditions of the rats. The sciatic function index (SFI) analysis was performed at 12, 16, 20 and 24 weeks after the operation, respectively. Eelectrophysiological detection and histological observation were performed at 12 and 24 weeks after the operation, respectively. Results All rats survived to the end of the experiment. At 12 and 16 weeks after the operation, group E was significantly different from group B in SFI (P lt; 0.05). At 20 and 24 weeks after the operation, group E was significantly different from groups B and C in SFI (P lt; 0.05). At 12 weeks after the operation, electrophysiological detection showed nerve conduct velocity (NCV) of group E was bigger than that of groups B and C (P lt; 0.05), and compound ampl itude (AMP) as well as action potential area (AREA） of group E were bigger than those of groups B, C and D (P lt; 0.05). At 24 weeks after the operation, NCV, AMP and AREA of group E were bigger than those of groups B and C (Plt; 0.05). At 12 weeks after the operation, histological observation showed the area of regenerated nerves and the number of myel inated fibers in group E were significantly differents from those in groups A, B and C (Plt; 0.05). The density and diameter of myel inated fibers in group E were smaller than those in group A (Plt; 0.05), but bigger than those in groups B, C and D (P lt; 0.05). At 24 weeks after the operation, the area of regenerative nerves in group E is bigger than those in group B (P lt; 0.05); the number of myel inated fibers in group E was significantly different from those in groups A, B, C (P lt; 0.05); and the density and diameter of myel inated fibers in group E were bigger than those in groups B and C (Plt; 0.05). Conclusion The tissue engineered nerve with the complex of SCs, ECM gel, bFGF-PLGA sustained release microspheres, PLGA microfilaments and permeables PDLLA catheters promote nerve regeneration and has similar effect to autograft in repair of nerve defects.
ObjectiveTo summarize the research progress of autologous vein nerve conduit for the repair of peripheral nerve defect. MethodsThe recent domestic and foreign literature concerning autologous vein nerve conduit for repair of peripheral nerve defect was analyzed and summarized. ResultsA large number of basic researches and clinical applications show that the effect of autologous venous nerve conduit is close to that of autologous nerve transplantation in repairing short nerve defect, especially the compound nerve conduit has a variety of autologous nerve tissue, cells, and growth factors, etc. ConclusionAutologous vein nerve conduit for repair of non-nerve defect can be a good supplement of autologous nerve graft, improvement of autologous venous catheter to repair peripheral nerve defect is the research direction in the future.