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1.
本研究旨在探讨子宫内膜肥大细胞在牛子宫内膜炎中的作用.选用产后6～10 d健康及患急性化脓性子宫内膜炎的西门塔尔牛各10头,分别为对照组和试验组,通过ELISA法检测子宫内膜中SP、VIP、组胺浓度,透射电镜观察子宫内膜MC颗粒状态及荧先定量PCR法检测组胺受体H1和H2 mRNA表达情况.结果表明,试验组子宫内膜组织申组胺、SP、VIP含量分别为(80.305±4.002)μg/L、(1 258.06±128.88)ng/L、(615.73±70.50)ng/L,而对照组分别为(39.204±4.278)μg/L、(308.12±9.72)ng/L,(1 667.34±153.4)ng/L,试验组与对照组相比差异均极显著(P＜0.01);试验组子宫内膜固有层MC颗粒数量战少、分布和浓度不均、有空泡形成,对照组子宫内膜固有层MC颗粒较多、分布均匀;试验组中组胺受体H1 mRNA水平显著低于正常组(P＜0.05),组胺受体H2mRNA水平高于正常组,且差异板显著(P＜0.01).结果显示子宫内膜炎时,在神经肽和炎症刺激下使子宫内膜固有层MC脱颗粒大量释放组胺,同时子宫内膜组胺受体H1和H2 mRNA表达失衡,使子宫局部淤血和迟缓,导致子宫免疫力下降,利于病原微生物的繁殖,促进子宫内膜炎的发生发展. 相似文献
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试验旨在明确瘦素在妊娠和非妊娠绵羊子宫内膜组织中的定位特征,探究其对绵羊子宫内膜上皮细胞中胚胎附植的影响。使用免疫组化法检测瘦素及其受体在妊娠和未妊娠绵羊的子宫内膜上皮组织的表达及定位;利用组织块分离培养原代绵羊子宫内膜上皮细胞,CCK8法确定瘦素最适浓度,RT-qPCR和Western blot检测瘦素对绵羊子宫内膜上皮细胞凋亡的作用,细胞划痕试验检测瘦素对绵羊子宫内膜上皮细胞迁移的作用,RT-qPCR检测瘦素对胚胎附植相关因子血管内皮生长因子（VEGF）、白血病抑制因子（LIF）、白细胞介素-6(IL-6)、子宫内膜附植位点黏蛋白（Muc1）、基质金属蛋白9(MMP9)、白细胞介素-1β(IL-1β)、骨桥蛋白（OPN）、泛素样修饰因子（ISG15）等基因mRNA的表达情况。结果显示,瘦素蛋白主要表达在未妊娠绵羊子宫内膜的基质和上皮组织中,主要在妊娠绵羊子宫内膜上皮组织中表达,瘦素受体表达无明显变化;组织块法可成功获得具有典型上皮样细胞特征并表达角蛋白CK18的原代绵羊子宫内膜上皮细胞。250 mg/L瘦素促进绵羊子宫内膜上皮细胞增殖和迁移,并显著上调Bcl-2,下调BAX、Cas... 相似文献
3.
子宫内膜异位症大鼠模型复制 总被引：3，自引：0，他引：3
取Wistar大鼠30只,用手术移植的 方法把自体子宫内膜组织2块分别移植到壁 腹膜与子宫系膜处,建立子宫内膜异位症大 鼠模型。术后4周,再次开腹,观察异位内膜 的存活情况、与周围组织的粘连程度及病理 学变化。结果发现腹膜和子宫系膜处移植内 膜的成活率及病灶的体积差异无显著性(P >0.05),腹膜处病灶与周围组织的粘连程度 显著轻于子宫系膜处病灶(P<0.01),移植 物外观呈囊状,表面有血管,光镜下观察见子 宫内膜细胞、间质细胞、腺体和血管,与正常 在位内膜相比腺体减少。该模型复制方法简 便,成功率高,是研究子宫内膜异位症较理想 的动物模型。 相似文献
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《中国兽医学报》2015,(7):1159-1163
探讨玉米赤霉烯酮(Zearalenone,ZEA)对雌性大鼠子宫内膜细胞凋亡与Caspase-3和Caspase-8蛋白表达的关系,进而揭示其导致子宫损伤的作用机制。应用HE染色观察组织病理变化,免疫组化SP法检测注射玉米赤霉烯酮后6个时间点大鼠子宫内膜细胞Caspase-3和Caspase-8蛋白的表达。病理组织学观察发现,试验组子宫组织出现不同程度损伤,子宫内膜细胞发生凋亡。免疫组化结果显示,试验组子宫内膜上皮细胞与间质细胞Caspase-3和Caspase-8蛋白表达量均明显高于对照组(P0.05)。不同时间点相比,Caspase-3在内膜上皮细胞中12h表达量最高,而在内膜间质细胞中18h表达量最高;Caspase8在内膜上皮细胞中18h表达量达到峰值,而在内膜间质细胞中24h表达量最高,之后缓慢下降。结果表明,ZEA可能通过上调Casepase-3和Caspase-8的表达从而引起子宫内膜细胞凋亡。 相似文献
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为建立Aroclor 1254致孕鼠子宫内膜细胞损伤模型,通过分离、培养怀孕大鼠的原代子宫内膜细胞,用不同浓度的Aroclor 1254处理子宫内膜细胞48 h,倒置显微镜下观察细胞形态,MTT法检测细胞的活力,Western blot法检测细胞中CYP450的表达,并通过ELISA法检测细胞培养基中TNF-α、IL-6、雌二醇(estradiol,E2)和孕酮(progesterone,P4)的含量,来确定Aroclor 1254是否对细胞造成损伤。结果表明,随着Aroclor 1254浓度的升高,子宫内膜细胞的损伤及抑制率也随之增高,CYP450的表达随Aroclor 1254浓度的升高而升高。TNF-α和IL-6的水平比对照组显著升高(P0.05),E2和P4的水平则比对照组显著降低(P0.05)。这表明Aroclor 1254对体外培养子宫内膜细胞损伤程度呈浓度依赖性,10 mg/L的质量浓度作用48 h可建立可靠的子宫内膜细胞损伤模型。 相似文献
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为了分离、纯化、培养猫子宫内膜上皮细胞并分析其生物学特性,本试验采用胰蛋白酶消化法+组织块培养法,于体外分离和培养子宫内膜上皮细胞,并采用免疫荧光法对其进行鉴定;测定第3代(P3)细胞生长曲线和群体倍增时间,比较P3和P6细胞克隆形成率。结果显示：猫子宫内膜上皮细胞呈典型铺路石状,细胞角蛋白染色呈阳性,符合内膜上皮细胞特征;P3细胞生长曲线呈典型S型;P3子宫内膜上皮细胞群体倍增时间为(22.73±2.05) h,其克隆形成率极显著高于P6(P<0.01)。结果表明：本试验采用胰蛋白酶消化法+组织块培养法分离获得的猫子宫内膜上皮细胞具有良好的体外增殖能力。 相似文献
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为了研究日粮中添加N-氨甲酰谷氨酸(NCG)对妊娠前期鄂尔多斯细毛羊子宫内膜层及胎儿发育的影响,试验选择受孕鄂尔多斯细毛羊母羊40只,随机分为3组:NCG1组饲喂基础日粮+0.30 g NCG/d(n=13),NCG2组饲喂基础日粮+0.40 g NCG/d(n=13),对照组饲喂基础日粮(n=14),开展妊娠期0 d至90 d的饲喂试验。结果表明:妊娠期第90 d,NCG1组胎儿肺脏重显著高于对照组,NCG2组胎儿肝脏重显著高于对照组(P0.05);妊娠期第17天,NCG1组母羊子宫内膜OPN基因表达量显著高于NCG2组(P0.05)和对照组(P0.01),NCG2组母羊子宫内膜Integrinαvβ3基因表达量显著高于对照组(P0.05);妊娠期第90 d,NCG2组和NCG1组胎儿肾脂肪BMP7(P0.05)和UCP-1基因表达量显著高于对照组(P0.01),而NCG1组(P0.01)胎儿肾脂肪PGC-1α基因表达量显著低于对照组,NCG2组(P0.01)胎儿肾脂肪PRDM16基因表达量显著低于对照组。在本试验条件下,妊娠前期日粮中添加NCG有效促进了鄂尔多斯细毛羊妊娠识别、早期胚胎定植和子宫内膜层发育,保障了胎儿早期程序化健康生长。 相似文献
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为了研究槲皮素对Aroclor 1254损伤的孕鼠子宫内膜细胞是否具有保护作用,试验通过分离、培养怀孕大鼠的子宫内膜细胞,以Aroclor 1254诱导子宫内膜细胞损伤模型,用不同剂量的槲皮素分别处理损伤的子宫内膜细胞24~72h,MTT法测细胞的活力,RT-PCR及Western blot法检测细胞中CYP450的表达,并通过ELISA法检测细胞培养基中TNF-α、IL-6、雌二醇(estradiol,E2)和孕酮(progesterone,P4)的含量,来确定槲皮素是否对损伤的细胞具有保护作用。结果显示,处理24h后,随着槲皮素浓度的升高,子宫内膜细胞的成活率也随之增高,其中50μmol/L槲皮素时成活率最高。CYP1A1、CYP2B1和CYP2E1在子宫内膜细胞mRNA中的表达随槲皮素浓度的升高呈上升的趋势。CYP1A1和CYP2E1在细胞的蛋白中不表达,CYP2B1的表达随槲皮素浓度的增加而呈升高的趋势。50μmol/L槲皮素作用24h对损伤的怀孕大鼠子宫内膜细胞CYP1A1、CYP2B1和CYP2E1的表达效果最明显。Aroclor 1254损伤的子宫内膜细胞中TNF-α和IL-6的含量比对照组显著升高(P0.05),E2和P4的含量则比对照组显著降低(P0.05)。50μmol/L槲皮素处理后TNF-α和IL-6的含量比Aroclor 1254损伤组显著降低(P0.05),E2和P4则显著升高(P0.05)。这表明槲皮素对损伤的怀孕大鼠子宫内膜细胞具有保护作用。 相似文献
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以绵羊发情周期的子宫内膜为研究对象,采用免疫组化方法定量检测绵羊发情周期子宫内膜的微血管密度（MVD）和血管内皮生长因子（VEGF）表达量。结果表明：MVD的标记物CD34和VEGF在绵羊发情周期的子宫内膜中呈现相同的表达特征,即表达位点均在子宫内膜上皮固有层及肌层;两者均在发情后0d开始表达,5d最高。5d开始到15d表达量缓慢下降。子宫内膜VEGF表达量和MVD相关系数r=0.669,P=0,表明子宫角中VEGF表达量和MVD显著正相关。 相似文献
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Yamauchi N Takezawa T Kizaki K Herath CB Hashizume K 《The Journal of reproduction and development》2003,49(6):553-560
The objective of the present investigation was to study proliferative activity of fibroblast-like endometrial stromal cells in bovine endometrial caruncular (CAR) and intercaruncular (ICAR) areas that have distinct functions during implantation. Endometrial stromal cells were derived from CAR and ICAR of nonpregnant cows, and their proliferative potential was analyzed in an in vitro cell culture system. In addition, expression of four types of cell cycle regulatory molecules was analyzed by RT-PCR in samples of CAR, ICAR, cotyledon (COT) and fetal membrane of both artificially inseminated (AI) and somatic nuclear transferred (NT) cows on days 30 and 60 of gestation. The proliferation growth curve showed that the cells derived from CAR had higher proliferative activity than that of ICAR-derived cells. No morphological differences were found between the cells derived from CAR and ICAR at population-doubling levels (PDL) of the two. Most of the cells derived from ICAR of nonpregnant cows exhibited expanded shape with no further proliferation at PDL 6 with a lack of cyclin E expression. Of the regulatory molecules, cyclin D1, CDK2 and CDK4 were expressed in both CAR and ICAR cells derived from both nonpregnant, and AI cows on days 30 and 60 of gestation. The expression of cyclin E in both AI and NT cows was confined to COT and fetal membrane on day 30 of gestation. Cyclin E expression on day 60 of gestation in AI cows was observed in all but ICAR areas. In marked contrast, however, cyclin E expression on day 60 of gestation in NT cows was confined to COT, suggesting that poor placentation in these cows is possibly associated with a lack of cyclin E expression. These results suggest that CAR-derived stromal cells have higher proliferative potential, which may be related to cyclin E expression during implantation. 相似文献
12.
《Clinical Techniques in Equine Practice》2002,1(1):28-31
This article discusses uterine cysts (endometrial and lymphatic), their diagnosis, and therapeutic management using neodynium: yttrium-aluminum-garnet laser ablation as directed by hysteroscopic visualization. The technique used in our clinical setting is described along with a discussion of the follow-up results in mares treated by the Sarkey's Surgical Laser Laboratory at Oklahoma State University, Stillwater, OK, over the past 7 years. 相似文献
13.
Equine endometrial cytology 总被引：1，自引：0，他引：1
The simplicity of collection of material for cytologic preparations belies the complexity of smear interpretation beyond recognition of neutrophils. Knowledge concerning cancer cytology moves rapidly, for cancer is a progressive, often fatal disease so that tissue for comparison and confirmation of interpretation often becomes available. This is not true for cytologic study of the equine endometrium. Lesions detected by means of cytology smears may be transient and regress, offering little information concerning their etiology or consequences. They may be focal and missed in the corresponding biopsy. Such experiences should lead to the abandonment of equine endometrial cytology, but have only strengthened our interest and enthusiasm for this technique in the study of the uterus. We have found it to be useful in a limited number of clinical circumstances in which other techniques have failed. This, plus the growing number of supportive clinicians using cytopathology service and the large number of mares with fertility problems, leads us to believe that further investigation of equine endometrial cytology may prove to be even more helpful as a clinical tool. 相似文献
14.
分离妊娠山羊子宫内膜淋巴细胞(Endometrial lymphocyte,EML)后,分别加入4、8、12、16 mg/L的亚硒酸钠进行体外培养,探讨硒对EML的活化作用及其对分泌细胞因子IL-2I、L-4、TGFβ1及TGFβ2的影响。结果显示,8~16 mg/L的亚硒酸钠可显著地促进山羊EML的体外活化(P<0.01),并呈剂量依赖性。EML活化后,对IL-2的分泌呈微弱的促进作用;对IL-4、TGFβ1、TGFβ2的分泌有显著的促进作用。 相似文献
15.
A review is given of the comparative pathology of endometrial carcinomas regarding the incidence, the morphology, and the relation with endometrial hyperplasia. Compared to man, endometrial carcinomas in animals are fairly rare, except in rabbits, in cattle, and in a stock of Han: Wistar rats. In rabbits the endometrial carcinomas are mostly primary multiple and present in both horns. Histologically they are almost always adenocarcinomas. The histological structure can vary considerably with regard to the degree of differentiation. In cattle the endometrial carcinomas are mostly singular. Histologically they are mostly adenocarcinomas, often accompanied by formation of much dense fibrous tissue. In rats the endometrial carcinomas are mostly primary multiple adenocarcinomas. In man as well as in the rabbit and in the rat, relationships have been described between endometrial hyperplasia and endometrial carcinoma. It is striking that in the dog, a species in which endometrial hyperplasia very often occurs, endometrial carcinomas should be rare. The endometrial carcinoma in the rabbit as an animal model for human endometrial carcinoma is discussed extensively. In both species there are signs indicating relationships between endometrial carcinomas and sex hormones, especially oestrogens. The incidence in rabbits is very high. Endometrial carcinomas in rabbits can be transplanted subcutaneously in the same rabbit. They can also be cultured in vitro. Moreover the rabbit is a suitable species to study the progesterone/progesterone-receptor complex by determining the synthesis of the progesterone-induced protein uteroglobin which may be important in studying endometrial carcinomas. Uteroglobin is a good marker for a functional 'Progesterone-PR-DNA-mRNAug-Uteroglobin- System' (or PUG-System).(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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Harald Pothmann Jessica Müller Isabella Pothmann Alexander Tichy Marc Drillich 《Reproduction in domestic animals》2019,54(2):350-357
The objectives of this study were as follows: (a) to assess the reproducibility of polymorphonuclear neutrophil (PMN) cell counts at five predefined endometrial sites (corpus uteri, left horn base, right horn base, left horn tip and right horn tip) and (b) to determine the agreement for the diagnosis of subclinical endometritis (SE) between the different endometrial sites. Forty milking cows between 28 and 34 days post‐partum were enrolled for endometrial sampling using cytobrush technique. Intraclass correlation coefficient (ICC) was calculated to evaluate the reproducibility of PMN counts at different sites. The right horn base was found to have the greatest agreement of PMN counts with the other endometrial sites (ICC = 0.66–0.85). Twenty‐eight of 40 cows showed no signs of clinical endometritis and were used for evaluation of agreement for the diagnosis of SE, analysed by using Cohen´s kappa (κ) statistics. Agreement for SE diagnosis with PMN cut‐off ≥5% was greatest between the right horn base and the right horn tip (κ = 0.84), and with PMN cut‐off ≥18% between the right horn base and left horn tip (κ = 1.0), respectively. The results indicate that the right horn base can be regarded as suitable for cytobrush sampling. The probability to detect an animal positive for SE (PMN ≥ 5%) with a single cytobrush sampling was 51.0%; thus, a second sampling is recommended to improve the accuracy. 相似文献
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Madej M Norrby M Madsen M Johannisson A Hansen C Madej A 《Reproduction in domestic animals》2012,47(1):113-124
Artificial insemination (AI) of sows results in a significant elevation of prostaglandin F(2α) metabolite (PGFM) levels in peripheral plasma, whereas in mated sows such elevation is not seen. The aim of this study was to investigate whether boar seminal plasma (SP) has any effect on the release of PGFM, prostaglandin F(2α) (PGF(2α) ), prostaglandin E(2) (PGE(2) ) or interleukin-6 (IL-6) by in vitro cultured porcine endometrial (epithelial - pUE and stromal - pUS), cervical (pCE and pCS) and bovine endometrial epithelial cells (bUE). This study shows that boar SP inhibits the release of PGFM, PGF(2α) and PGE(2) by porcine endometrial and cervical cells and bovine endometrial cells after 3 and 24 h incubation. Boar SP stimulated IL-6 release by pUE, pUS and even bUE after 3 h incubation. Tumour necrosis factor α (TNFα) stimulated the release of IL-6 by pUS only after 24 h incubation, but in the presence of boar SP, this stimulation was attenuated. The overall results from these in vitro studies give us possibility to understand the difference in prostaglandin response between mated and inseminated sows. Furthermore, we demonstrated that frozen-stored epithelial and stromal cells from pig endometrium, as well as from the cervix are suitable for studying the effect of SP on the release of prostaglandins. The only prerequisite is to incubate these thawed cells with arachidonic acid as a source for the synthesis of prostaglandins. A similar effect of boar SP on porcine and bUE cells may suggest inter-species reactivity. 相似文献
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Endometritis is an important cause of reproductive pathology in the horse. Endometrial cytology preparations from unguarded swabs, guarded swabs or brushes, cap of a guarded swab, low volume lavage or even an endometrial biopsy sample can be utilised to rapidly evaluate uterine health. These cells can easily be stained with a modified Wright's stain and evaluated for the presence or absence of inflammatory cells and pathogens. Commonly visualised cell types are easily identified with a traditional light microscope at 400× or 1000× magnification. This technique provides an easy and rapid way to diagnose endometritis in the horse. 相似文献