紫草素对人鼠嵌合内异位症模型血管内皮生长因子表达的影响

目的通过研究紫草素对内异症小鼠模型血管内皮生长因子（VEGF）表达的影响,探究其治疗子宫内膜异位症（EMs）的可能机制。方法建立人鼠嵌合内异症动物模型,随机分为紫草素大、中、小剂量组,另设PBS阴性对照组及达菲林阳性对照组,采用免疫组化法,比较用药前后移植人子宫内膜VEGF表达变化情况。结果各剂量紫草素均抑制VEGF表达,大、中剂量组与阴性对照组相比差异有统计学意义（P〈0.05）,与达菲林组比较无显著性差异（P〉0.05）。结论紫草素可能通过抑制异位内膜血管新生,阻止其种植和生长而治疗EMs。     

抗子宫内膜抗体和子宫内膜异位症

目的：研究抗子宫内膜抗体与子宫内膜异位症的关系。方法：改良法提取，纯化正常人及内异症患者的子宫内膜抗原，分析其氨基酸组成，并用ＳＤＳ－ＰＡＧＥ及Ｗｅｓｔｅｒｎ ｂｌｏｔ分析两者蛋白质组成及抗原特异性，建立ＥＬＩＳＡ方法并测定，分析正常人及内异症患者血清ＥＭＡｂ。     

RANTES基因多态性与子宫内膜异位症的相关性研究

目的研究RANTES基因启动子区-28C/G的多态性与子宫内膜异位症的关系。方法应用聚合酶链反应-限制性酶切片段长度多态性技术(PCR-RFLP)并进行测序的方法检测子宫内膜异位症患者46例(内异症组),非子宫内膜异位症患者35例(对照组)。结果子宫内膜异症组RANTES-28C/C、C/G两种基因型分布频率分别为84.78%、15.22%,对照组RANTES-28C/C、C/G两种基因型分布频率分别为85.71%、14.29%;两组间的组之间的基因型分布频率比较差异无显著性(P>0.05)。RANTES基因-28位点C、G等位基因型在内异症组中的分布频率分别为92.39%、7.61%,在对照组中分别为92.86%、7.14%,两组间等位基因型频率比较差异无统计学意义(P>0.05)。结论 RAN-TES启动子区-28C/G基因多态性与子宫内膜异位症遗传易感性无关联。     

子宫内膜异位症患者瘦素检测及临床意义

目的检测子宫内膜异位症(EMS)患者血清和腹腔液瘦素(Leptin)水平的变化及在子宫内膜表达情况,探讨其在内异症发病中的作用。方法放射免疫法测定40例内异症患者和40例非内异症患者妇女(对照组1)血清和腹腔液Leptin的水平。抗生物素蛋白-过氧化物酶(SP)法检测瘦素在子宫内膜表达情况,并与R-AFS分期进行相关分析。同期检测50例健康妇女(对照组2)血清Leptin水平。结果 EMS患者血清瘦素水平与对照组间比较无差异;腹腔液中瘦素水平明显高于对照组;EMS患者和对照组子宫内膜中均有瘦素表达,EMS患者与对照组表达上存在差异(P<0.05)。结论内异症患者腹腔液中瘦素水平明显升高,并随疾病的严重程度而改变,同期影响瘦素在子宫内膜中的表达,这可能是瘦素在内异症的发生发展中起作用的机制。     

子宫内膜异位症对子宫内膜容受性的影响

子宫内膜异位症（Endometriosis,EMs）是妇科常见病,也是女性不孕的常见原因之一,它通过影响生殖过程的各个环节而导致不孕.其中对胚胎植入的影响包括子宫内膜超微结构的改变、细胞因子及黏附分子的表达紊乱、同源盒基因HOXA10的下调等所致的子宫内膜容受性的下降.     

生存素在子宫内膜异位症中的表达特点

目的 探讨生存素在子宫内膜异位症病灶及在位内膜中的表达情况及相关因素。方法 采用免疫组化抗生物素蛋白-过氧化物酶染色法（SP法）检测38例2002年12月至2004年9月在我院妇科住院的未经治疗的子宫内膜异位症患者的异位及在位内膜标本中生存素的表达，以同期因子宫肌瘤或宫颈病变接受手术的生育期妇女的子宫内膜作为对照。结果 病例组异位内膜与在位内膜均有生存素的表达并且缺乏周期性变化（P〉0．05），异位内膜腺上皮生存素表达的强度高于在位内膜（P〈0．05）。结论 子宫内膜异位症的异住及在位内膜均表达生存素，而且在位内膜间质及异住内膜腺上皮表达也缺乏周期性。     

血管生成素-2和内皮抑素在子宫内膜异位症中的高表达

目的 探讨血管生成素-2（ANG-2）和内皮抑素（ENS）在子宫内膜异位症发生发展中的作用。方法 卵巢子宫内膜异位症病人25例，24例无内膜病变者为对照组。留取子宫内膜，用免疫组化染色法检测ANG -2和ENS在子宫内膜中的表达，用酶联免疫吸附测定法检测腹腔液中ANG -2和ENS的蛋白含量。结果ANG -2在位子宫内膜组织中的阳性表达率显著高于异位内膜和对照组，异位内膜中阳性表达率显著高于对照组；ENS在异位内膜组织中的表达明显高于在位内膜和对照组，在位内膜明显高于对照组；ANG-2及ENS表达强度在子宫内膜异位症Ⅰ、Ⅱ期与Ⅲ、Ⅳ比较无显著差异。异位组腹腔液的ANG-2、ENS含量和ANG-2/ENS 比值均显著高于对照组。结论ANG-2和ENS在子宫内膜异位症血管生成中起到重要的作用，参与调节异位病灶的发生和进展。     

趋化因子RANTES生物学特性及在子宫内膜异位症中的作用初探

正常T细胞表达和分泌的活化调节因子RANTES是CC家族中最早被发现的趋化因子,也被命名为CCL5。近来许多研究发现它与多种免疫及炎症反应、肿瘤转移等密切相关。本文根据RANTES信号通路,RANTES与其他细胞因子、激素、环境因素等的相互作用对子宫内膜异位症的影响综述,为寻找该病发生发展的确切机制及相关治疗提供依据。     

galectin-3在子宫内膜异位症患者在位内膜中的表达及意义

目的：探讨galectin-3在子宫内膜异位症（内异症）患者在位子宫内膜中的表达及意义.方法：分别采用免疫组化和实时定量逆转录-聚合酶链反应（Real-time RT-PCR）检测内异症患者在位内膜及正常对照中galectin-3蛋白及mRNA的表达,比较其表达差异.结果：galectin-3蛋白定位于子宫内膜的腔上皮细胞、腺上皮细胞和间质细胞.与正常对照相比,galectin-3 mRNA及蛋白在内异症在位内膜中的表达显著下降（P＜0.05）.其表达在分泌期高于增生期.结论：内异症患者在位子宫内膜galectin-3低表达可能与其子宫内膜容受性的改变有关,从而导致了内异症不孕.     

直肠子宫内膜异位症2例报道

1临床资料病例1,29岁女性,因经期腹痛,排便次数增多2年,近1月出现大便带血入院。直肠指检:距肛门6 cm处直肠前壁扪及直径5 cm的肿块,表面不光滑,拟诊为直肠肿瘤。术中见肿块位于直肠子宫陷凹,向周围浸润,质硬,予以全子宫切除及直肠癌根治术。病例2,37岁女性,因痛经伴经期延长2年余,加重伴肛门坠胀1年来院就诊。患者月经前1~2 d出现腰骶部和下腹部疼痛,伴肛门坠胀,有便意,症状于经期明显加重。妇科检查:阴道后穹隆结节状突起,直肠子宫陷凹触及痛性结节。阴道活检病理诊断为子宫颈后穹隆子宫内膜异位症,直肠活检病理诊断考虑为直肠子宫内膜异…     

GM-CSF inhibits apoptosis of neural cells via regulating the expression of apoptosis-related proteins

Recently, we reported that GM-CSF showed therapeutic effects on the spinal cord injury (SCI) in rat model possibly via its anti-apoptotic activity in the nervous system. This study investigated the molecular mechanism of its anti-apoptotic and neuroprotective effects in N2a neuroblastoma cells and in rat SCI model. GM-CSF inhibited staurosporine-induced cytotoxicity and apoptosis of N2a cells. Single administration of GM-CSF either intraperitoneally or locally using a gelfoam, clearly reduced the apoptotic events in the surrounding region of the injury site in rat SCI model. Immunohistochemical analysis showed that apoptosis of cells occurred mainly in the neurons, but not significantly in the astrocytes in the surrounding regions. In both N2a cells and in rat SCI model, GM-CSF actually reduced the expression of pro-apoptotic proteins (p53, p21(WAF1/CIP1) and Bax), while further induced that of an anti-apoptotic protein (Bcl-2). In the Basso-Beattie-Bresnahan (BBB) locomotor test, the single GM-CSF administration showed better behavioral recovery than the untreated control only at early times within 1 week after injury. Overall, GM-CSF was shown to exert its neuroprotective effect on the neural injury by regulating the expression of apoptosis related genes, providing the molecular basis on its anti-apoptotic activity. Longer administration of GM-CSF appeared to be necessary for the sustained functional recovery from SCI.     

紫草素通过下调c-MYC蛋白的表达抑制白血病NB4细胞的增殖

目的研究紫草素对人白血病NB4细胞增殖的影响及其作用机制。方法 CCK-8法检测NB4细胞增殖。流式细胞术检测细胞周期和凋亡。Western blot检测细胞c-MYC、ERK、p-ERK蛋白表达。用SPSS17.0软件包进行单因素方差分析及t检验。结果 NB4细胞经紫草素处理后,细胞活力受到明显抑制(P0.01);G1期细胞增多(P0.01),G2期和S期细胞减少(P0.01);细胞凋亡率明显增加(P0.01);c-MYC蛋白表达水平明显降低(P0.05),p-ERK水平明显升高(P0.01)。结论紫草素抑制NB4细胞增殖,可能机制是通过下调c-MYC蛋白的表达,EKR信号通路蛋白可能参与了这一过程。     

地塞米松抑制哮喘小鼠肺RANTES的表达

目的 研究地塞米松对哮喘小鼠调节激活正常T细胞表达和分泌细胞因子(RANTES)蛋白和mRNA表达的影响.方法 将30只雌性BALB/c小鼠随机分为3组(每组10只):对照组、哮喘组、激素干预组,收集支气管肺泡灌洗液(BALF),行白细胞和嗜酸粒细胞(EOS)计数;酶联免疫吸附法(ELISA)测定BALF和血清中RANTES含量;肺组织切片HE染色,光镜下计数细胞总数和EOS百分比;部分行免疫组化染色检测肺组织RANTES蛋白;用原位杂交法检测肺组织RANTES mRNA表达.结果 哮喘组白细胞总数、EOS百分比、RANTES浓度明显升高(P＜0.01),干预组明显低于哮喘组(P＜0.01);哮喘组肺组织RANTES蛋白及mRNA表达显著高于对照组(P＜0.01),主要表达于上皮细胞;干预组肺组织RANTES蛋白及mRNA表达显著低于哮喘组(P＜0.01).结论 地塞米松可抑制RANTES表达和活性而发挥抗EOS炎症作用,这可能是其控制哮喘发病的重要机制之一.     

The effect of RANTES on human sperm chemotaxis

BACKGROUND: Follicular fluid (FF) is a powerful stimulator of human sperm hyperactivation and the acrosome reaction. FF causes sperm accumulation by way of chemotaxis. The chemoattractant in FF has not yet been identified in the human. It is well known that some types of chemokine such as RANTES (Regulated on Activation Normal T Expressed and Secreted Chemokine) exist in genital tract fluids (for example, FF, seminal plasma and uterine fluid). Few reports appear to exist concerning the direct effect of chemokines on the function of human sperm. METHODS: The chemotactic effect of RANTES on human sperm were investigated by capillary and double-chamber assays, while the chemokinetic effect was investigated using computer-assisted sperm analysis. RESULTS: Both the capillary and double-chamber assays demonstrated a significant chemotactic effect of RANTES on human sperm. Anti-RANTES rabbit IgG partially neutralized the chemotactic effect of FF. In contrast, no statistically significant chemokinetic effect was observed in any motility parameter. CONCLUSIONS: Here, it was demonstrated that mRNA for the RANTES receptors CCR-1 and CCR-5 are present in human sperm. Furthermore, RANTES is involved in the chemotactic effect of FF in vitro.     

Transendothelial chemotaxis in vitro of human monocytes

Porcine aortic vascular endothelial cells were grown to confluence on microporous PTFE membranes and incorporated into a two-compartment chemotaxis assembly. Human peripheral blood mononuclear cells (20-25% monocytes) were placed in the upper compartment and zymosan-activated human serum (ZAHS) as chemoattractant in the lower compartment. Over a 3 h period monocytes migrated across the endothelialized membrane and adhered to a collecting filter sited in the lower compartment. Addition of ZAHS to the cell suspension in the upper compartment virtually abolished the migration response whilst only minimal leucocyte migration was supported by the bare unendothelialized PTFE membrane. The extent of transendothelial monocyte chemotaxis was dependent upon the concentration of chemoattractant in the lower compartment and upon the cell density of the suspension containing monocytes. A confluency test of fluid flow across the endothelialized filter showed that monocyte migration could take place without disturbing endothelial barrier function. The culture system is easy to assemble and the method provides experimental versatility.     

MC148基因对RANTES趋化单核细胞的拮抗作用

目的 研究人β趋化因子同源物MC148基因对趋化因子RANTES的拮抗作用。方法 从传染性软疣病毒(MCV)基因组中克隆MC148DNA片段，通过同源重组构建Ad—MC148腺病毒重组体。重组体转染293细胞，从上清液提纯蛋白MC148P。通过趋化实验研究MC148P对RANTES趋化单核细胞的抑制作用。结果 构建了复制缺陷型腺病毒重组体Ad—MC148，重组蛋白MC148P可以剂量依赖性地拮抗趋化因子RANTES对单核细胞的趋化作用。结论 MC148P是趋化因子RANTES的拮抗剂，可以拮抗RANTES对单核细胞的趋化作用。对趋化因子类似物的研究有望为抑制器官移植排斥反应找到新途径。     

Bromelain inhibits lipopolysaccharide-induced cytokine production in human THP-1 monocytes via the removal of CD14

Bromelain has been reported to have anti-inflammatory and immunomodulatory effects. However, the anti-inflammatory mechanism of bromelain is unclear. Therefore, we investigated the effect of bromelain on cytokine production from lipopolysaccharide (LPS)-stimulated human peripheral blood mononuclear cells (PBMC) and monocytic leukemia THP-1 cells. The result showed that bromelain (50-100 microg/ml) significantly and reversibly reduced tumor necrosis factor (TNF)-alpha interleukin- (IL)-1beta and IL-6 from LPS-induced PBMC and THP-1 cells. This effect was correlated with reduced LPS-induced TNF-alpha mRNA and NF-kappaB activity in THP-1 cells. In addition, bromelain dose-dependently inhibited LPS-induced prostaglandin E(2), thromboxane B(2) and COX-2 mRNA but not COX-1 mRNA. Importantly, bromelain degraded TNF-alpha and IL-1beta molecules, reduced the expression of surface marker CD14 but not Toll-like receptor 4 from THP-1 cells. Taken together, the results suggest that the suppression of signaling pathways by bromelain's proteolytic activity may contribute to the anti-inflammatory activity of bromelain.     

Novel function of C4a anaphylatoxin. Release from monocytes of protein which inhibits monocyte chemotaxis.

The complement C4-derived anaphylatoxin, C4a, possesses a strong chemotaxis inhibitory capacity to blood monocytes at concentrations as low as 10(-16) mol/L. In our study, treatment with carboxypeptidase B to convert it to C4a des Arg77 decreased the inhibitory activity to less than 1/1,000. The extraordinary inhibitory capacity of C4a suggests the presence of an amplification mechanism in this inhibition. Indeed, we found that the conditioned media of peripheral blood mononuclear cells or monocyte/macrophage lineage cell lines (U937 and THP-1 cells) preincubated with 10(-16) mol/L C4a for 5 minutes or more at 37 C possessed the inhibitory capacity 100,000-fold stronger than the original activity of C4a. The monocyte-derived chemotaxis inhibitory factor seemed monocyte-specific. This cell-derived factor was sensitive to treatment with trypsin and chymotrypsin and immunologically distinct from C4a. The apparent molecular size of the monocyte factor was estimated to be approximately 20 kd by gel filtration. These results indicate that C4a anaphylatoxin induces the release from monocytes of a protein with inhibitory activity for monocyte chemotaxis.