腹腔镜卵巢打孔术结合药物促排卵治疗难治性多囊卵巢综合征的临床研究

目的　探讨腹腔镜卵巢打孔术 (LOD)后结合克罗米芬 (CC)和中药排卵汤对难治性多囊卵巢综合征(PCOS)不孕的治疗效果。方法　 1998年 2月至 2 0 0 3年 4月将 5 8例患者随机分成A组 (LOD) 18例 ,B组(LOD CC) 2 1例及C组 (LOD CC 排卵汤 ) 19例 ,所有患者进行LOD。手术前后分别测血黄体生成激素、卵泡刺激素、雄激素及雌二醇水平 ,术后第 9天起监测患者卵泡发育和排卵共 3个周期 ,并记录妊娠数和流产数。结果　三组患者术后LH和T水平与术前相比均有显著性下降 (P <0 0 1)。 3个治疗周期内共有 4 5例排卵 ,其中A组 9例 (5 0 0 % ) ,B组 19例 (90 5 % ) ,C组 17例 (89 5 % ) ,三组间排卵率差异有显著性意义 (P <0 0 0 5 )。1年内累计妊娠 2 6例 ,其中A组 3例 ,B组 10例 ,C组 13例。自然流产A组有 1例 ,B组 2例 ,C组无发生。结论　LOD后结合CC和中药排卵汤能明显改善难治性PCOS患者的排卵和受孕机会。     

腹腔镜电凝打孔治疗多囊卵巢综合征的远期疗效分析

目的 :观察腹腔镜电凝打孔治疗多囊卵巢综合征 (PCOS)的远期疗效。方法 :于 1997年 7月～ 2 0 0 3年 9月对克罗米酚促排卵治疗无效的PCOS患者 5 0例 ,行腹腔镜电凝打孔术 ,观察手术前后FSH、LH、T、E2 、PRL、LH/FSH的变化。并对比手术前后卵巢体积及形态的变化。术后根据基础体温测定 (BBT)及B超监测排卵并随访受孕情况。结果 :随访时间 3～ 73月 ,其中 6 0月以上 15例。术后LH、T、LH/FSH较术前明显降低 (P <0 .0 1) ,卵巢体积由术前平均 11cm3变为术后平均 8.4cm3,月经情况明显改善 ,该方法治疗PCOS自然恢复排卵率 94 % ,术后 5年累积受孕率 76 % ,无并发症发生。结论 :腹腔镜治疗PCOS简单易行、创伤小、恢复快 ,远期疗效好 ,为难治的PCOS患者提供了新的治疗途径     

Changes in ovarian reserve and ovarian blood flow in patients with polycystic ovary syndrome following laparoscopic ovarian drilling

This prospective cohort study was conducted on 80 patients with clomiphene citrate (CC)-resistant polycystic ovary syndrome undergoing laparoscopic ovarian drilling (LOD). Pre- and post-LOD ovarian reserve parameters (anti-Mullerian hormone: AMH, ovarian volume: OV, and antral follicle count: AFC) and ovarian stromal blood flow indices (Vascularization index: VI, flow index: FI, and vascularization flow index: VFI) were measured to explore the effect of LOD and to find out the correlation between serum AMH and different clinical, hormonal, and ultrasonic variables. There was a highly significant reduction of the serum AMH (p?p?相似文献   

Impact of transvaginal hydrolaparoscopy ovarian drilling on ovarian stromal blood flow and ovarian volume in clomiphene citrate-resistant PCOS patients: a case-control study

Polycystic ovarian syndrome (PCOS) is the most common endocrine disorder in gynecology. In PCOS patients vascularization parameters are altered. Transvaginal hydrolaparoscopy (THL) is a mini-invasive approach for ovarian drilling in PCOS patients. In this study, we assessed the effect of ovarian drilling using THL on ovarian volume (OV) and vascularization index (VI) using 3D power Doppler ultrasonography in CC-resistant PCOS patients. A case-control study on 123?CC-resistant PCOS women who underwent THL ovarian drilling was performed. Patients underwent 3D ultrasound and power Doppler to measure VI, flow index (FI), vascularization flow index (VFI) and to evaluate OV before and after the procedure, at six months, and on the early follicular phase of the menstrual cycle. After THL ovarian drilling, OV and power Doppler flow indices were significantly reduced compared to pre-operative values (OV: 7.85 versus 11.72?cm³, p?p?p?p?相似文献   

Metformin versus laparoscopic ovarian drilling in clomiphene- and insulin-resistant women with polycystic ovary syndrome

Objective

To compare the hormonal-metabolic profiles and reproductive outcomes in clomiphene-resistant patients with polycystic ovary syndrome and insulin resistance between women receiving metformin and those undergoing laparoscopic ovarian drilling.

Methods

A total of 110 eligible participants were randomly allocated to diagnostic laparoscopy plus metformin therapy (group 1, n = 55) or laparoscopic ovarian drilling (group 2, n = 55). The t test was used for mean comparisons of hormonal-metabolic parameters and OGTT values before and after treatment. The χ² test was used for comparisons of ovulation, pregnancy, and abortion rates.

Results

Groups 1 and 2 showed a significant decline in testosterone, insulin-like growth factor-1 (P < 0.001 vs P < 0.001), and luteinizing hormone (P < 0.05 vs P < 0.001), while the glucose to insulin ratio was significantly increased (P < 0.001 vs P < 0.05) compared with baseline. Group 2 patients had more regular cycles and higher rates of ovulation and pregnancy compared with group 1: 76.4% [42/55] vs 58.2% [32/55], P < 0.04; 50.8% [131/258] vs 33.5% [94/281], P < 0.001; and 38.2% [21/55] vs 20.0% [11/55], P < 0.03, respectively. The difference in the early abortion rate between the groups was not statistically significant.

Conclusion

Although metformin results in a better attenuation of insulin resistance, laparoscopic ovarian drilling is associated with higher rates of ovulation and pregnancy.     

Three-dimensional power Doppler imaging in the diagnosis of polycystic ovary syndrome

Objective

To determine the role of three-dimensional (3D) power Doppler imaging in the diagnosis of polycystic ovary syndrome (PCOS).

Methods

Pulsatility index (PI) and resistance index (RI) of the uterine artery and ovary were measured by two-dimensional (2D) Doppler imaging, while vascularization index (VI), flow index (FI), and vascularization flow index (VFI) were measured by 3D power Doppler in 25 patients with PCOS and 25 women with normal menstrual cycles used as a control group.

Results

Uterine artery PI and RI were significantly higher (P < 0.001) and ovarian PI and RI were significantly lower (P < 0.001) in women with PCOS compared with controls. Ovarian VI and VFI were significantly higher in women with PCOS compared with the control group (P < 0.001).

Conclusion

3D power Doppler indices were higher in women with PCOS than in the control group and were positively correlated with 2D color Doppler indices, and clinical and hormonal parameters. High 3D power Doppler indices may be useful as one of the diagnostic criteria for PCOS.     

Doppler analysis of uterine perfusion and ovarian stromal blood flow in polycystic ovary syndrome

Objective

To investigate blood flow velocity in the ovarian stromal artery and uterine artery in women with polycystic ovary syndrome (PCOS) and to correlate these velocities with clinical and biochemical parameters.

Methods

A prospective study was carried out in 55 patients with PCOS and 42 age-matched women who did not have PCOS. Clinical, biochemical, and hormonal characteristics, and utero-ovarian Doppler ultrasound blood flow parameters were determined, and correlations between the parameters were evaluated.

Results

Ovarian stromal blood flow was higher (P < 0.01) and uterine perfusion was lower (P < 0.01) in women with PCOS compared with women who did not have PCOS. Ovarian stromal artery pulsatility index (PI) was inversely correlated with levels of dehydroepiandrosterone sulfate (DHEAS) and insulin-like growth factor-1, and with the luteinizing hormone/follicle-stimulating hormone ratio. There was a positive correlation between uterine artery PI and DHEAS level.

Conclusion

Doppler analysis of the uterine and intraovarian arteries may provide additional information about the etiopathogenesis of PCOS and partly explain the clinical implications of the condition.     

上皮性卵巢肿瘤患者血清和肿瘤组织中VEGF水平的检测

目的　通过对上皮性卵巢肿瘤患者肿瘤组织中血管内皮生长因子 (VEGF)表达的观察以及对术前血清VEGF水平的检测 ,探讨VEGF与上皮性卵巢肿瘤临床病理因素之间的关系。方法　应用免疫组织化学和ELISA方法 ,对 79例上皮性卵巢肿瘤患者 (包括 2 1例卵巢良性囊腺瘤 ,1 2例交界性卵巢肿瘤和 4 6例上皮性卵巢癌 )术前血清VEGF水平和术后组织标本中VEGF的表达进行了检测。结果　①上皮性卵巢癌组织VEGF阳性表达率 (78 2 6 % )显著高于交界性肿瘤 (4 1 6 7% )和良性囊腺瘤 (33 33% ) (P <0 0 1 ) ;上皮性卵巢癌中 ,晚期癌 (Ⅲ、Ⅳ期 )的VEGF阳性表达率 (92 0 0 % )显著高于早期癌 (Ⅰ、Ⅱ期 ) (6 1 90 % ) (P <0 0 1 ) ,且强阳性表达率 (5 2 0 0 % )也显著高于早期癌 (1 4 2 9% ) (P <0 0 5 ) ;有腹水组VEGF阳性表达率 (87 5 0 % )显著高于无腹水组 (5 7 1 4 % ) (P <0 0 5 ) ;②上皮性卵巢癌患者血清VEGF水平也明显高于良性囊腺瘤患者和交界性肿瘤患者 (P <0 0 1 ) ,卵巢癌中 ,低分化患者血清VEGF水平高于高、中分化患者 (P <0 0 1 ) ,血清VEGF水平在临床Ⅲ、Ⅳ期患者明显高于Ⅰ、Ⅱ期患者 (P <0 0 5 ) ,有明显腹水者比无腹水者高 (P <0 0 1 )。结论　VEGF在上皮性卵巢癌肿瘤组织中表达的增加以及血     

血管内皮生长因子在卵巢癌细胞浸润转移中的作用

目的 :探讨血管内皮生长因子 (VEGF)在卵巢癌浸润转移中的作用。方法 :阳离子脂质体介导VEGF165质粒转染 2株卵巢癌细胞CaOV 3、COC1,并经逆转录聚合酶链式反应 (RT PCR)、Western免疫印迹检测转染VEGF165质粒前后癌细胞VEGFmRNA及其蛋白表达水平 ;用Boyden小室体外侵袭实验比较VEGF165质粒转染前后以及单克隆抗体作用后 2株癌细胞通过人工重组基底膜的能力强弱变化。结果 :VEGF165质粒转染后 ,2株细胞mRNA和蛋白表达水平均较转染前明显增强 (P <0 .0 5 )。VEGF165质粒转染的癌细胞CaOV 3、COC1穿过人工重组基底膜的相对百分率分别为 4 2 .5± 4 .1、2 6 .8± 2 .4 ,明显高于对照组穿膜细胞相对百分率 (2 4 .7± 1.9、8.6± 1.1) (P <0 .0 5 ) ;而在VEGF单克隆抗体存在时 ,2株癌细胞穿膜细胞相对百分率 (10 .2± 0 .7、5 .4± 0 .3)较处理前均有不同程度的下降 (P <0 .0 5 )。结论 :VEGF参与了卵巢癌转移的侵袭、浸润阶段 ,应用VEGF单克隆抗体可针对性地抑制VEGF介导的卵巢癌侵袭、浸润。     

Vascular endothelial growth factor −2578 A/C, −460 T/C and +405 G/C polymorphisms in polycystic ovary syndrome

Objective

Vascular endothelial growth factor (VEGF) may be involved in the physiological regulation of ovarian angiogenesis and pathogenesis of polycystic ovary syndrome (PCOS). VEGF −2578 A/C, −460 T/C and +405 G/C single nucleotide polymorphisms (SNPs) are known to be related to VEGF production.

Study design

In order to investigate the possible association between VEGF gene and PCOS susceptibility, we analyzed genotype and allele distributions of above mentioned SNPs in 137 patients with PCOS and 155 healthy women. Differences in genotype distributions and allele frequencies in the cases and controls were compared for statistical significance using the χ²-test. Haplotype frequencies were estimated using a contingency χ²-test. Mann–Whitney U test was used for the statistics of the clinical and biochemical parameters.

Results

No significant association between PCOS and the variant alleles of VEGF −2578 (OR: 0.91, 95% CI = 0.65–1.26), −460 (OR: 0.78, 95% CI = 0.56–1.08), and +405 (OR: 1.25, 95% CI = 0.81–1.93) was observed. However, haplotype analysis demonstrated that the frequency of CTG haplotype, was higher among PCOS compared with controls (p = 0.019) and that there is a strong linkage disequilibrium (D′ = 0.873, r² = 0.752) between −2578 and −460 polymorphisms.

Conclusions

These preliminary results suggest that the −2578, −460 and +405 SNPs of VEGF gene are not significant risk factors for PCOS development alone. However, because of the high VEGF producer CTG haplotype was more frequent among the PCOS, we suppose that investigated polymorphisms – interacting with other genetic and environmental factors – could play a role in the development of PCOS.     

The effect of metformin treatment on ovarian stromal blood flow in women with polycystic ovary syndrome

Objective  To evaluate the effects of metformin on the ovarian stromal blood perfusion in the patients with polycystic ovary syndrome (PCOS). Methods  Twenty-five women with PCOS who underwent a Doppler examination of the ovarian stroma was evaluated; hormonal, anthropometric, and biochemical parameters of patients were determined. After the patients were treated with 850 mg metformin twice a day for 6 months, the same parameters were evaluated in the same patients. Results  After metformin treatment, although pulsatility index (PI) was increased from 1.80 ± 1.23, 1.84 ± 1.28 to 2.20 ± 1.10, 2.19 ± 0.83 in the right and left ovary, respectively, and resistance index was increased from 0.84 ± 0.25, 0.83 ± 0.23 to 1.16 ± 0.37, 1.10 ± 0.26 in the right and left ovary respectively (P < 0.05), peak systolic velocity (PSV) was decreased from 12.30 ± 1.72, 12.34 ± 1.55 to 10.25 ± 0.97, 10.53 ± 1.33 in the right and left ovary respectively (P < 0.05). PI and RI did not show any difference between the homeostatic model assessment insulin resistance index (HOMA-IR) ≥ 2.38 and HOMA-IR < 2.38 groups before and after metformin treatment (P > 0.05). However, PSV was decreased significantly from 13.05 ± 1.35, 12.82 ± 2.02 to 11.03 ± 0.71, 10.25 ± 0.42 in HOMA-IR ≥ 2.38 group in the right and left ovary, respectively, and PSV was decreased from 11.50 ± 2.67, 11.28 ± 0.26 to 9.10 ± 0.58, 9.28 ± 0.25 in HOMA-IR < 2.38 group in the right and left ovary, respectively, before and after metformin treatment (P < 0.05). PSV for both ovaries were positively correlated with HOMA scores before and after metformin treatment [(r = 0.713, P = 0.000; r = 0.617, P = 0.04 and r = 0.635, P= 0.03; r = 0.483, P = 0.031 respectively]. Conclusion  Metformin treatment affected ovarian stromal blood flow in PCOS patients.     

血管内皮生长因子与血小板源性生长因子在卵巢上皮性癌淋巴管形成中的作用

目的 探讨血管内皮生长因子(VEGF)和血小板源性生长因子(PDGF)在卵巢上皮性癌(卵巢癌)淋巴管形成中的作用.方法 RT-PCR技术检测淋巴管内皮细胞核标志物Proxl和淋巴管形成相关因子VEGF-A、VEGF-C、VEGF-D及PDGF-A、PDGF-B、PDGF-C、PDGF-D在卵巢癌细胞株SKOV3、70例卵巢上皮性肿瘤(卵巢良性肿瘤15例、卵巢交界性肿瘤10例、卵巢癌45例)和20例正常卵巢组织中的表达情况.实时定量PCR技术检测卜述90例卵巢组织中Proxl、VEGF-A、-C、-D及PDGF-A、-B、-C、-D的表达水平,并进行相关性分析.结果 (1)Proxl在各种卵巢组织中均有表达,而在SKOV3细胞中无表达;VEGF-A、-C、-D及PDGF-A、-B、-C、-D在SKOV3细胞和各种卵巢组织中均有表达.(2)卵巢癌组织中Proxl(2.2±1.3)、VEGF.A(3.5±1.5)、VEGF-C(19 ±14)、VEGF-D(3.0±1.8)及PDGF-A(3.3±3.3)、PDGF-C(6.9±4.6)的表达水平高于卵巢良性肿瘤和交界性肿瘤(P均＜0.05).(3)Proxl、VEGF-A和PDGF-A在卵巢癌Ⅲ～Ⅳ期(Proxl:2.6±1.3,VEGF-A:4.0± 1.4.PDGF-A:4.1±3.7)、淋巴结转移阳性(Proxl:3.0±1.4,VEGF-A:4.1±1.7,PDGF-A:4.9±4.1)及腹膜转移阳性(Proxl:2.8±0.9,VEGF-A:4.0±1.8,PDGF-A:4.5±4.0)的组织中的表达水平,分别高于Ⅰ～Ⅱ期、淋巴结转移阴性和腹膜转移阴性者(P均＜0.05);VEGF-C、VEGF-D在淋巴结转移阳性卵巢癌组织中的表达水平(VEGF-c:24± 13,VEGF-D:3.9±2.0)高于淋巴结转移阴性者(P均＜0.05).(4)卵巢癌组织中Proxl的表达水平与VEGF-D(r=0.62,P＜0.01)、PDGF-C(r=0.91,P＜0.01)、PDGF-D(r=0.61,P＜0.01)的表达水平呈正相关关系.结论 VEGF-A、VEGF-C和PDGF-A可能通过参与淋巴管形成之外的机制促进卵巢癌的淋巴结转移;VEGF-D可以促进卵巢癌的淋巴管形成及淋巴结转移;PDGF-B与卵巢癌的淋巴管形成及淋巴结转移无关;PDGF-C、PDGF-D参与卵巢癌淋巴管形成,但无促进淋巴结转移的作用.     

腹腔镜电凝打孔术治疗耐氯米芬多囊卵巢综合征不孕43例疗效分析

目的:探讨腹腔镜下卵巢表面电凝打孔术对耐氯米芬(CC)多囊卵巢综合征(PCOS)所致不孕症患者的疗效。方法:对耐氯米芬的PCOS不孕患者43例,行腹腔镜下卵巢表面电凝打孔术。术后随访3~12个月。观察手术前后血清黄体生成素(LH)、卵泡刺激素(FSH)、睾酮(T)、雌二醇(E2)、泌乳素(PRL)水平变化,卵巢体积及窦卵泡数的变化,术后月经和排卵情况、妊娠率及流产率。结果:术后LH、T、LH/FSH、PRL水平、卵巢体积、窦卵泡数均较术前明显降低(P<0.01),而FSH、E2术前、术后差异无显著性(P>0.05),月经情况明显改善,术后排卵率为93.0%(40/43),妊娠率为58.1%(25/43),流产率为16.0%(4/25)。结论:腹腔镜下卵巢表面电凝打孔术对于耐CC的PCOS不孕患者具有高排卵率和妊娠率以及低流产率的疗效。同时,具有创伤小、恢复快、并发症少的优点,是治疗耐CC的PCOS不孕患者的有效手段。     

Evaluation of the impact of laparoscopic ovarian drilling on Doppler indices of ovarian stromal blood flow,serum vascular endothelial growth factor,and insulin-like growth factor-1 in women with polycystic ovary syndrome

OBJECTIVE: To study the serum levels and correlation of vascular endothelial growth factor (VEGF), insulin-like growth factor 1 (IGF-1), hormonal profile, and Doppler blood flow changes within the ovarian stroma before and after laparoscopic ovarian drilling (LOD) in women with clomiphene-resistant polycystic ovary syndrome (PCOS). DESIGN: Prospective controlled study. SETTING: University teaching hospital. PATIENT(S): Twenty-five women with clomiphene-resistant PCOS (group 1) and 20 women with regular menstrual cycles as a comparison group (group 2). INTERVENTION(S): Laparoscopic ovarian drilling. MAIN OUTCOME MEASURE(S): Serum levels of VEGF, IGF-1, and Doppler indices of ovarian stromal blood flow. RESULT(S): The serum levels of VEGF, IGF-1, T, and LH were significantly higher in group 1 before LOD than in group 2. The Doppler indices (pulsatility index and resistance index) of ovarian stromal blood flow were also significantly lower in group 1 before LOD than in group 2. The serum levels of VEGF, T, and LH were significantly reduced in group 1 after LOD compared with in group 1 before LOD. Doppler indices (pulsatility index and resistance index) of ovarian stromal blood flow were significantly increased after LOD. The VEGF levels before LOD were positively correlated with IGF-1, LH, and T. After LOD, the VEGF levels were positively correlated with LH and T. CONCLUSION(S): Higher serum levels of VEGF and IGF-1 may explain the increased vascularity that was demonstrated by Doppler blood flow measurements in PCOS. Laparoscopic ovarian drilling reduced serum VEGF, IGF-1, T, and LH and reduced ovarian blood flow velocities, which may explain the reduction of ovarian hyperstimulation syndrome in women with PCOS after LOD.     

Vascular endothelial growth factor and its soluble receptor in ovarian pathology

Objective.?The soluble form of the vascular endothelial growth factor (VEGF) receptor, s-VEGFR-1, may negatively regulate the action of VEGF. Our purpose was to better understand the regulation of angiogenetic processes in ovarian cysts.

Methods.?Seventy-three women, 36 with serous cystoadenoma, 30 with ovarian endometriosis and seven with cystoadenocarcinoma, were enrolled. We calculated both VEGF and s-VEGFR-1 levels in cystic fluid and a VEGF activity index by means of the ratio VEGF/s-VEGFR-1. Student's t test was used for the statistical analysis.

Results.?We found higher VEGF concentration in both endometriotic and malignant lesions than in serous cystoadenoma (p?=?0.03 and 0.001, respectively). Also s-VEGFR-1 concentration was higher in endometrioma than in serous cysts (p?=?0.005); however, there was no statistically significant difference between cystoadenoma and the malignant lesions (p?=?0.15). VEGF activity index in cystoadenoma, endometriotic and malignant lesions was 0.61, 0.27 and 0.50, respectively.

Conclusions.?VEGF certainly has an important role in both ovarian endometriosis and for cancer progression; however, the activity index may be better to investigate the real role of VEGF in the pathology we have considered.     

血管内皮生长因子与抑制素B和促排卵结局的相关研究

目的探讨不同控制性超促排卵(controlled ovarian hyperstimulation,COH)方案中血清及卵泡液(follicular fluid,FF)中血管内皮生长因子(vascular endothelial growth factor,VEGF)与抑制素B(inhibin B,INHB)及COH结局的相关性。方法应用酶联免疫吸附方法分别检测长方案组(A组,n=38)及非降调节方案组(B组,n=38)患者血清及FF中VEGF和INHB水平并行相关性分析。结果 1降调节足够长时间(≥18 d)时,血清VEGF水平显著下降,且促性腺激素(Gn)启动日A组VEGF水平[(81.50±32.59)ng/L]明显低于B组[(123.64±53.90)ng/L](P0.01)。2 Gn启动后A、B组血清VEGF水平呈上升趋势,h CG注射日后A组继续上升,而B组先下降后上升;且h CG注射次日A组VEGF水平[(165.69±38.25)ng/L]明显高于B组[(136.49±39.19)ng/L](P=0.002);A、B组其它时间血清VEGF水平无统计学差异(P0.05)。3 Gn第5日血清VEGF水平与COH结局相关性最好(P0.01)。4 A、B组FF中VEGF水平随卵泡直径增大而升高,大、中卵泡VEGF水平无统计学差异(P0.05),但B组小卵泡VEGF水平[(889.86±268.95)ng/L]明显高于A组[(728.45±291.88)ng/L](P=0.014);且大卵泡VEGF水平与COH结局显著呈负相关。5 A、B组血清及FF中VEGF水平与INHB呈显著负相关。结论 COH过程中,血清及大、中卵泡VEGF水平与卵巢反应性及COH结局负相关,并且可能对INHB分泌起抑制作用。     

肝细胞生长因子对卵巢癌血管生成因子的影响及信号传导途径

目的研究肝细胞生长因子(HGF)对人卵巢癌SKOV3细胞血管内皮生长因子的影响及其信号传导机制。方法将不同浓度、不同作用时间的HGF和核转录因子(NFkB)抑制剂PDTC刺激培养的SKOV3细胞;应用逆转录-聚合酶链反应技术(RT-PCR)检测卵巢癌细胞血管内皮生长因子(VEGF)mRNA的变化;采用蛋白印迹方法检测卵巢癌细胞VEGF蛋白和核蛋白NFkB的变化。结果HGF促进卵巢癌细胞VEGF mRNA和蛋白的表达,且随时间和浓度增加作用增强,PDTC可以抑制HGF的刺激作用;HGF促进细胞核NFkB蛋白的活化,且随时间延长作用增强,于刺激1 h达高峰,PDTC可以抑制HGF对NFkB的活化作用。结论HGF通过NFkB途径在核酸和蛋白水平调节卵巢癌细胞分泌VEGF。     

Association between the vascular endothelial growth factor gene polymorphisms and the risk of polycystic ovary syndrome in Northern Chinese women

The present study aimed to investigate whether the single nucleotide polymorphisms (SNPs) rs2010963 and rs833061 in vascular endothelial growth factor (VEGF) gene is correlated with the risk of polycystic ovary syndrome (PCOS) in Northern Chinese women, as a preliminary study. This case-control study comprised 118 women with PCOS and 130 healthy women as controls. Genotyping of the two polymorphisms within the VEGF gene 5′-untranslated region and promoter region were performed using polymerase chain reaction ligase detection reaction method. The data showed that there was a significant difference in the genotype and allele distribution of the rs2010963 polymorphism between the PCOS group and the control group (p?=?.020 and .033, respectively). The women carrying the C allele (G/C?+?C/C genotype) had a lower risk of PCOS compared with the women with G/G genotype [odds ratio (OR?=?0.55; 95% confidence interval (CI)?=?0.33–0.91]. Our study shows for the first time that the rs2010963 polymorphism may be associated with a risk of PCOS in Northern Chinese women.     

Expression and clinical significance of vascular endothelial growth factor,cyclooxygenase-2, and Bcl-2 in borderline ovarian tumors

Objective The objectives were to study the expression of vascular endothelial growth factor (VEGF), cyclooxygenase-2 (Cox-2), and Bcl-2 in borderline ovarian tumors (BOTs) and the relationship within them, and to investigate the correlation between expression of VEGF, Cox-2, and Bcl-2, and the clinicopathologic features of BOTs.Methods An immunohistochemical technique was used to investigate the expression of VEGF ,Cox-2, and Bcl-2 in 69 borderline, 18 benign, and 27 malignant human ovarian tumor tissues.Results Expression rate of VEGF protein (59.4%) in BOTs was higher than in benign tumors (27.8%) and was lower than in ovarian carcinomas (92.6%), and there was a significant difference between BOTs and benign ovarian tumors (p<0.05), and carcinoma (p<0.01). Significant correlation was observed between the positive expression rate for VEGF and clinical stage of BOTs (p<0.05). The statistical analysis did not show a close correlation between the expression of VEGF and tissue type, and peritoneal implants in BOTs (p>0.05). The expression rate of Cox-2 was significantly higher in ovarian carcinomas (81.5%) than in BOTs (57.9%) and in benign ovarian tumors (38.9%) (p<0.05). Significant correlation was observed between the positive expression rate for Cox-2 and the clinical stage of BOTs (p<0.05). The statistical analysis showed no close correlation between the expression of Cox-2 and tissue type, and peritoneal implants in BOTs (p>0.05). There was a significant difference between the expression of Bcl-2 in ovarian carcinomas and BOTs than that in benign ovarian tumors (p<0.05). The positive expression rate of Bcl-2 was not related to clinical stages and peritoneal implants (p>0.05). Statistical analysis showed a positive correlation between the expression of Cox-2 and VEGF, and Bcl-2 in BOTs.Conclusions Overexpression of VEGF, Cox-2, and Bcl-2 in BOTs may play an important role in the oncogenesis and progression of BOTs. It is feasible to detect VEGF, Cox-2, and Bcl-2 in the diagnosis and to predict the prognosis of BOTs.