Study on the effect of Shixiang plaster on the expression of CD31,serum FN,and VEGF in a rat model with chronic wounds

Background:Chronic wounds pose a significant surgical challenge,often requiring traditional treatments with limited efficacy.This study explores the promising impact of Shixiang plaster,a classic Chinese ointment,on wound healing.We investigated the cluster of differentiation 31(CD31)expression,serum fibronectin(FN),and vascular endothelial growth factor(VEGF)levels in SPF rats with induced wounds to elucidate the mechanism behind Shixiang plaster’s effectiveness.We investigated the effect and explored the role of Shixiang plaster on the expression of CD31,serum FN,and VEGF in chronic wounds.Methods:The study involved 36 SPF rats divided into model,rb-bFGF,and Shixiang plaster groups.Penicillin was injected into the rats before modelling for 3 days to prevent infection.The skin was excised 2 cm below the horizontal line of the inferior border of the shoulder bone in the middle of the rat column up to the deep fascial layer and inoculated with a certain concentration of Staphylococcus aureus;the wound was covered aseptically for 3 days.The trauma area of the rats was observed at 3,7,and 14 days,respectively.Histopathology was observed using haematoxylin eosin and Masson staining.CD31 expression was detected using immunohistochemistry staining.FN and VEGF expression was detected using serum ELISA.Statistical analyses were carried out by the method of SPSS.Results:Regarding wound morphology,at 3 days,the recovery area of the Shixiang plaster group was larger than that of the other two groups,at 7 days,the wound healing rate of the Shixiang plaster group was significantly higher,and at 14 days,the wounds of the Shixiang plaster group had been mostly healed,with a healing rate of 98.3%.Haematoxylin eosin staining revealed a large amount of granulation tissue at 3 days in the Shixiang plaster group,and the epidermal scales disappeared at 14 days,with thinner epidermal thickness at 1 lesion and a large reduction in inflammatory cell infiltration.Masson staining showed that at 3,7,and 14 days,blue staining was the most abundant and deeper in the Shixiang plaster group,with richer collagen and a compact tissue matrix.Immunohistochemical testing showed strong positive expression of CD31 in the Shixiang plaster group,with abundant neovascularisation and large official lumens extending towards the surface of the wound.Statistically significant elevated expression of FN at 7 and 14 days was determined by ELISA in the Shixiang plaster group,and VEGF expression was significantly increased at 7 days,but expression had been expressed at a low level at 14 days.Conclusion:Shixiang plaster exhibits remarkable efficacy in healing chronic wounds.The proposed mechanism involves FN’s promotion of angiogenesis and cell proliferation,VEGF’s impact on angiogenesis and inflammation,and CD31’s regulatory role in inhibiting inflammation while promoting angiogenesis.

Cinnamon extract suppresses experimental colitis through modulation of antigen-presenting cells

AIM:To investigate the anti-inflammatory effects of cinnamon extract and elucidate its mechanisms for targeting the function of antigen presenting cells.METHODS:Cinnamon extract was used to treat murine macrophage cell line(Raw 264.7),mouse primary antigen-presenting cells(APCs,MHCII+) and CD11c+dendritic cells to analyze the effects of cinnamon extract on APC function.The mechanisms of action of cinnamon extract on APCs were investigated by analyzing cytokine production,and expression of MHC antigens and co-stimulatory molecules by quantitative real-time PCR and flow cytometry.In addition,the effect of cinnamon extract on antigen presentation capacity and APC-dependent T-cell differentiation were analyzed by [H3]-thymidine incorporation and cytokine analysis,respectively.To confirm the anti-inflammatory effects of cinnamon extract in vivo,cinnamon or PBS was orally administered to mice for 20 d followed by induction of experimental colitis with 2,4,6 trinitrobenzenesulfonic acid.The protective effects of cinnamon extract against experimental colitis were measured by checking clinical symptoms,histological analysis and cytokine expression prof iles in inflamed tissue.RESULTS:Treatment with cinnamon extract inhibited maturation of MHCII+ APCs or CD11c+ dendritic cells(DCs) by suppressing expression of co-stimulatory molecules(B7.1,B7.2,ICOS-L),MHCII and cyclooxygenase(COX)-2.Cinnamon extract induced regulatory DCs(rDCs) that produce low levels of pro-inflammatory cytokines [interleukin(IL)-1β,IL-6,IL-12,interferon(IFN)-γ and tumor necrosis factor(TNF)-α] while expressing high levels of immunoregulatory cytokines(IL-10 and transforming growth factor-β).In addition,rDCs generated by cinnamon extract inhibited APC-dependent T-cell proliferation,and converted CD4+ T cells into IL-10high CD4+ T cells.Furthermore,oral administration of cinnamon extract inhibited development and progression of intestinal colitis by inhibiting expression of COX-2 and pro-inflammatory cytokines(IL-1β,IFN-γ and TNF-α),while enhancing IL-10 levels.CONCLUSION:Our study suggests the potential of cinnamon extract as an anti-inflammatory agent by targeting the generation of regulatory APCs and IL-10+ regulatory T cells.

Activation of killer cells with soluble gastric cancer antigen combined with anti-CD3 McAb

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The human leucocyte differentiation antigens (HLDA) workshops: the evolv-ing role of antibodies in research, diagnosis and therapy

The 8^th International Workshop on Human Leucocyte Differentiation Antigens （chaired by HZ and managed by BS） was run over a 4-year period and culminated in a conference in December 2004. Here we review the achievements of the HLDA Workshops and provide links to information on CD molecules and antibodies against them, including the 93 new CDs assigned in the 8^th Workshop. We consider what remains to be achieved （including an estimate of the number of leucocyte surface molecules still to be discovered）, and how the field can best move forward.

Impact of PRRSV on activation and viability of antigen presenting cells

Porcine reproductive and respiratory syndrome(PRRS) is one of the most important diseases of swine industry. The causal agent, PRRS-virus(PRRSV), is able to evade the host immune response and survive in the organism causing transient infections. Despite all scientific efforts, there are still some gaps in the knowledge of the pathogenesis of this disease. Antigen presenting cells(APCs), as initiators of the immune response, are located in the first line of defense against microorganisms, and are responsible for antigen recognition, processing and presentation. Dendritic cells(DCs) are the main type of APC involved in antigen presentation and they are susceptible to PRRSV infection. Thus, PRRSV replication in DCs may trigger off different mechanisms to impair the onset of a host effective immune response against the virus. On the one side, PRRSV may impair the basic functions of DCs by regulating the expression of major histocompatibility complex class Ⅱ and CD80/86. Other strategy followed by the virus is the induction of cell death of APCs by apoptosis, necrosis or both of them. The impairment and/or cell death ofAPCs could lead to a failure in the onset of an efficient immune response, as long as cells could not properly activate T cells. Future aspects to take into account are also discussed in this review.

Key role of human leukocyte antigen in modulating human immunodeficiency virus progression: An overview of the possible applications

Host and viral factors deeply influence the human immunodeficiency virus(HIV) disease progression. Among them human leukocyte antigen(HLA) locus plays a key role at different levels. In fact, genes of the HLA locus have shown the peculiar capability to modulate both innate and adaptive immune responses. In particular, HLA class Ⅰmolecules are recognized by CD8+ T-cells and natural killers(NK) cells towards the interaction with T cell receptor(TCR) and Killer Immunoglobulin Receptor(KIR) 3DL1 respectively. Polymorphisms within the different HLA alleles generate structural changes in HLA classⅠpeptide-binding pockets. Amino acid changes in the peptide-binding pocket lead to the presentation of a different set of peptides to T and NK cells. This review summarizes the role of HLA in HIV progression toward acquired immunodeficiency disease syndrome and its receptors. Recently, many studies have been focused on determining the HLA binding-peptides. The novel use of immune-informatics tools, from the prediction of the HLA-bound peptides to the modification of the HLAreceptor complexes, is considered. A better knowledge of HLA peptide presentation and recognition are allowing new strategies for immune response manipulation to be applied against HIV virus.

Studies on mechanism of Sialy Lewis-X antigen in liver metastases of human colorectal carcinoma

INTRODUCTIONSialyl Lewis-X antigen ,correlated with carcinoma, is a group of carbohydrate antigen containing oligosaccharide expressed of embryonic tisue and glycoproteins on cell surface of embryonic tissue[1].The SLeX antigen located on cell surface is synthesized principally by two enzymes ,al ,3fucosyltransfrease and a2, 3sialyctransferase.In adults ,SLeX antigen is expressed principally on the surfaces of granulocytic cells and some tumor cells .

The Secondary Structure of Heated Whey Protein andIts Hydrolysates Antigenicity

Fourier transform infrared spectroscopy(FTIR) and circular dichroism(CD) were used to investigate the conformational changes of heated whey protein(WP) and the corresponding changes in the hydrolysates immunoreactivity were determined by competitive enzyme-linked immunosorbent assay(ELISA).Results showed that the contents of α-helix and β-sheet of WP did not decrease much under mild heating conditions and the antigenicity was relatively high;when the heating intensity increased(70 ℃ for 25 min or 75 ℃ for 20 min),the content of α-helix and β-sheet decreased to the minimum,so was the antigenicity;However,when the WP was heated at even higher temperature and for a longer time,the β-sheet associated with protein aggregation begun to increase and the antigenicity increased correspondingly.It was concluded that the conformations of heated WP and the antigenicity of its hydrolysates are related and the optimum structure for decreasing the hydrolysates antigeniity is the least content of α-helix and β-sheet.Establishing the relationship between the WP secondary structure and WP hydrolysates antigenicity is significant to supply the reference for antigenicity reduction by enzymolysis.

Detection of microbial antigenic components of circulating immune complexes in HIV patients:Involvement in CD4^+ T lymphocyte count depletion

Objective:To investigate the prevalence of microbial antigenic components of circulating immune complexes amongst grades of CD4 T lymphocyte counts in HIV sero positive and seronegative participants.Methods:Polyethelene glycol(PEG-600) and buffering methods of precipitation and dissociation of immune complexes was used to generate immune solution from sera of 100 HIV sero-positive and 100 HIV sero-negative participants.These were categorized into 3 grades based on CD4 count:】 500 cell/mm,200-499 cell/mm3 and 【200 cell/mm3.The immune solutions were assayed using membrane based immunoassay and antibody titration, along side its unprocessed serum for detection of various microbial antigens and or antibodies. CD4 T cell counts were estimated using Patec Cyflow SL-3 Germany.Results:Antigenic component of immune complexes of various infectious agents was detected in 99 and 70 HIV seropositive and HIV sero-negative participants,respectively.In group A,there were 10 HIV positive participants,including 4(40.0%) had circulating immune complexes(CICs) due to Salmonella species only:1(10.0%) due to Salmonella-Plasmodium falciparum(P.falciparum),SalmonellaP. falciparum-HCV and P.falciparum antigens,respectively.In group B,45(45.4%) HIV seropositive participants with CICs had CD4 T lymphocyte count between 200-499 cells/mm^3.Out of these,20(44.4%) had CICs due to Salmonella species only:9(20%) due to Salmonella-P. falciparum.In group C,there were 44(44.4%) HIV sero-positive participants,including 3(6.8%) due to Salmonella species only:24(54.4%) due to Salmonella-P.falciparum:2(4.5%) due to P. falciparum only.Conclusions:In HIV sero-positive participants,presence of heterogeneity of Salmonella species-P.falciparum antigens was highly incriminated in CD4 count depletion but not homogeneity of malaria parasites antigens.Malaria parasites antigens only were incriminated in CD4^+ count depletion amongst HIV sero-negative participants.Before taking any decision on the management of HIV-1-positive individuals,their malaria and Salmonella paratyphi status should be assessed,but not malaria status alone.

EXPRESSION CLONING OF A PROTECTIVE LEISHMANIA ANTIGEN

Parasite-specific CD8+ T cells have been shown to transfer protection against nLeishmania major in susceptible BALB/c mice.An epitope-tagged expression library was used to identify the antigen recognized by a protective CD8+ T cells clone. The expression library allowed recombinant proteins made in bacteria to be captured by macrophages for presentation to T cells restricted to major histompatibility complex class n. A conserved 36-kilodalton member of the tryptophanaspartic acid repeat family of proteins was identified that was expressed in both stages of the parasite life cycle. A 24-kilodalton portion of this antigen protected susceptible mice when administered as a vaccine with interleukin-12before injection.

Rejection of Experimental Hodgkins Lymphoma by T-Cells Engineered with a CD19 Chimeric Antigen Receptor

T cells engineered to express chimeric antigen receptors (CARs) combining an external antibody binding domain with the CD3ζ T cell receptor (TCR) signaling domain for triggering cell activation are being used for immunotherapeutic targeting of tumor cells in a non-HLA restricted manner. In this study we transduced T cells with a CD19-CAR construct containing a truncated CD34 gene (tCD34) marker and used these to target the B cell antigen CD19 on the surface of a Hodgkin’s lymphoma (HL) cell line (L591) both in vitro and in vivo. Levels of tCD34 expression in transduced peripheral blood mononuclear cells (PBMCs) ranged from 6% - 20% and this was increased to 82% after selection for transduced tCD34+ cells. In vitro cytotoxicity testing on a CD19+ HL cell line (L591) showed specific cell lysis initiated by the CD19-CAR transduced PBMCs. Importantly, CD19-CAR T cells prevented the growth of L591 HL tumor cells when co-injected subcutaneously (sc) in 6/6 severe combined immunodeficient (SCID) mice. There was no evidence of anti-tumor activity when CD19-CAR T cells were infused intravenously (iv) at the same time as L591 HL tumor cells were injected sc. However, 3/6 SCID mice showed tumor rejection within 83 days after iv infusion of CD19-CAR T cells 3 - 9 days after establishment of L591 HL tumors, while all control animals succumbed to tumors within 60 days. Interestingly, immuno-histochemical analysis of L591 HL tumors demonstrated that CD19-CAR T cells were detected not earlier than 11 days after infusion within the tumor mass. These results suggest that CD19 is a potentially attractive target for the immunotherapy of HL.

Regulatory T cells suppress autoreactive CD4^+ T cell response to bladder epithelial antigen

AIM： To investigate the role of regulatory T （Treg） cells in CD4^＋ T cell-mediated bladder autoimmune infammation. METHODS： Urothelium-ovalbumin （URO-OVA）/OT-II mice, a double transgenic line that expresses the membrane form of the model antigen （Ag） OVA as a self-Ag on the urothelium and the OVA-specific CD4^＋ T cell receptor specifc for the I-Ab/OVA323-339 epitope in the periphery, were developed to provide an autoimmune environment for investigation of the role of Treg cells in bladder autoimmune infammation. To facilitate Treg cell analysis, we further developed URO-OVA^GFP-Foxp3/OT-II mice, a derived line of URO-OVA/OT-II mice that express the green fuorescent protein （GFP）-forkhead box protein P3 （Foxp3） fusion protein. RESULTS： URO-OVA/OT-II mice failed to develop bladder infammation despite the presence of autoreactive CD4^＋ T cells. By monitoring GFP-positive cells, bladder infltration of CD4^＋ Treg cells was observed in URO-OVA^GFP-Foxp3/OT-II mice. The infiltrating Treg cells were functionally active and expressed Treg cell effector molecule as well as marker mRNAs including transforming growth factor-β, interleukin （IL）-10, fibrinogen-like protein 2, and glucocorticoid-induced tumor necrosis factor receptor （GITR）. Studies further revealed that Treg cells from URO-OVA^GFP-Foxp3/OT-II mice were suppressive and inhibited autoreactive CD4^＋ T cell proliferation and interferon （IFN）-g production in response to OVA Ag stimulation. Depletion of GITR-positive cells led to spontaneous development of bladder infammation and expression of inflammatory factor mRNAs for IFN-γ, IL-6, tumor necrosis factor-α and nerve growth factor in URO-OVA^GFP-Foxp3/OT-II mice. CONCLUSION： Treg cells specifc for bladder epithelial Ag play an important role in immunological homeostasis and the control of CD4^＋ T cell-mediated bladder autoimmune infammation.

Prognostic angiogenic markers(endoglin, VEGF, CD31) and tumor cell proliferation(Ki67) for gastrointestinal stromal tumors

AIM: To evaluate the correlation between the immunoexpression of angiogenic markers [CD31, CD105 and vascular endothelial growth factor(VEGF)], proliferative index(Ki67), and prognosis of patients with gastrointestinal stromal tumors(GIST).METHODS: This is a retrospective study of 54 GIST cases. Medical records were searched to obtain the GIST patients' demographic and clinical data, and paraffin-embedded blocks of tumor samples were retrieved from the hospital archives to conduct a new immunohistochemical evaluation. The tumor samples of GIST patients were subject to immunohistochemical evaluation for endoglin(CD105), CD31, VEGF, and Ki67 expression. The CD105 and CD31 intratumoral microvascular density(IMVD) was measured using automated analysis. We determined the correlation between the immunoexpression of CD105, CD31, VEGF,Ki67 and prognosis. In addition, we conducted a cutoff analysis using the receiver-operating characteristic curve. VEGF positivity was classified as either null/weak or strong. Ki67 was evaluated using a cutoff of 5%positive cells. The prognosis was classified as good(patient alive without recurrence) or poor(patient with recurrence/death).RESULTS: The distribution of tumor sites among the54 analyzed samples was as follows: 27(50%) in the stomach, 20(37.1%) in the small intestine, 6(11.1%)in the colon, and 1(1.8%) in the esophagus. The size of the tumors ranged from 2 to 33 cm(median: 8cm); in 12 cases(22.2%), the tumor was below 5 cm at the largest diameter, but in 42 cases(77.7%), the tumor was larger than 5 cm. The means of CD105 and CD31 were significantly higher in the group with poor prognosis(P < 0.001). The cut-off values of CD105(>1.2%) and CD31(> 2.5%) in the receiver-operating characteristic curve were related to a poorer prognosis.Cases with a better prognosis showed significantly null/weak staining for VEGF(P < 0.001). Ki-67 expression of≥ 5% was strongly correlated with a worse prognosis(P< 0.001). In the multivariate analysis, CD105 was the variable that most strongly correlated with prognosis.CONCLUSION: The IMVD cutoff values for the angiogenic markers CD105 and CD31, may be prognostic factors for GIST, in addition to VEGF and Ki67.

Enhancing Effects of Ligustrazine on Expression of CD31 and Hematopoietic Reconstitution in Syngenic Bone Marrow Transplantation of Mice

Summary： The effect of ligustrazine on the expression of CD31 in syngenic bone marrow transplantation （BMT） mice was studied. Fifty-six Balb/c mice were divided into 3 groups： normal control group. BMT control group, and ligustrazine treated group. Syngenic BMT mouse models were established according to the literatures. In BMT control group and the ligustrazine treated group, the mice were given respecxively orally 0.2 mL saline and 2 mg ligustrazine twice a day. On the 7th, 14th, and 21st day after BMT, the mice were killed. The expression of CD31 on the surface of bone marrow nuclear cells （BMNC） was detected by flow cytometry. Peripheral blood leukocytes, platelets and BMNC were counted. Histological observation of bone marrow was made. The results showed thai in ligustrazine treated group the peripheral blood leukocylcs, platelets and BMNC counts, and the expression of CD31 on the day 7, 14, 21 after BMT were higher than in BMTcontrol group （P〈0.01 or P〈0.05）. In conclusion, ligustrazine could obviously enhance the CD31 expression on the surface of BMNC after syngcnic BMT in mice, which may be one of the mecha- nisms underlying the ligustrazine accelerating hematopoietic reconstitution in syngenic BMT.

Prognostic Significance of CD31 Expression in Patients with Non-Small-Cell-Lung Cancer

Non-small cell lung cancer (NSCLC) is the primary cause of cancer related death worldwide. After resection of early stage NSCLC, the benefit of adjuvant chemotherapy for patient survival still remains unclear and investigations for further risk stratification are needed for an improved treatment decision. Microvessel density (MVD) influences both the nutrition of the cancer and the access to the bloodstream for the development of distant metastasis. The aim of this study was to examine the prognostic significance of microvessel density by CD31 staining in patients with resected stage IA-IIIB NSCLC. We used immunohistochemistry (IHC) of CD31 to examine the microvessel density in a cohort of 69 patients who had undergone radical resection for NSCLC. Correlation of IHC values and standard clinicopathologic parameters was analyzed as well as influence on long term survival. Survival analysis revealed a significant better overall survival for patients with higher median microvessel density (log rank p = 0.031) independent of clinicopathologic parameters. Regarding primary cancer related death, the survival was again significantly longer in patients with high CD31 count (log rank p = 0.036). A higher microvessel density was a strong predictor for a longer tumor related survival and could be used for therapeutic decisions of adjuvant chemotherapy after resection of early stage NSCLC.

CD31、CD105在乳腺癌中的研究现状

CD31和CD105是两种与血管相关的细胞表面标记物,通常被广泛用于乳腺癌肿瘤血管生成评估和肿瘤微环境的研究;同时,表达CD31、CD105的乳腺癌患者临床预后会较差。现就CD31与CD105的生物学功能,两者在乳腺癌中的表达与应用、应用前景及应用局限性等几个层面进行综述,为提高乳腺癌的临床疗效及预后提供参考和依据。

人脐带间充质干细胞来源外泌体治疗SD大鼠骨质疏松性股骨骨折

背景:人脐带间充质干细胞来源外泌体已广泛用于骨修复和重建研究,能显著促进成骨和血管生成。目的:探究人脐带间充质干细胞来源外泌体治疗骨质疏松性骨折的机制。方法:采用组织块培养法提取人脐带间充质干细胞及超速离心法提取人脐带间充质干细胞来源外泌体并进行鉴定。30只12周龄雌性SD大鼠随机分为假手术组(6只)和去势组(24只)。去势组采用经典的去势法构建骨质疏松模型,术后12周随机选取去势组6只大鼠与假手术组6只大鼠行Micro-CT及苏木精-伊红染色进行模型验证。验证骨质疏松模型构建成功后,将去势组剩余18只大鼠随机分为3组,均构建骨质疏松性股骨骨折模型,骨折端分别注射PBS(PBS组)、1.5×10^(11)particles/mL(低浓度外泌体组)、3×10^(11)particles/mL(高浓度外泌体组)外泌体。骨折术后4周行影像学及组织学观察评估骨折愈合和骨组织血管生成情况。结果与结论:①大体标本观察:与PBS组相比,外泌体组骨折愈合速度明显增快,骨折端骨痂生成量显著增加;②X射线片评分:外泌体组显著高于PBS组,差异有显著性意义(P<0.05);③Micro-CT三维成像:与PBS组相比,外泌体组骨折愈合加快,骨痂生成量显著增加;外泌体组骨体积分数显著高于PBS组,差异有显著性意义(P<0.01);④苏木精-伊红染色和Masson染色:与PBS组相比,外泌体组有更多的骨小梁生成,有更多的新生骨组织生长;⑤免疫组织化学染色:与PBS组相比,外泌体组骨钙素与CD31的表达更加显著;高浓度外泌体组较低浓度外泌体组新生血管密度更大,骨痂生成量更多,骨折愈合增快,呈现浓度依赖性。结果表明,人脐带间充质干细胞来源外泌体可通过促进血管生成和成骨,最终促进骨质疏松性骨折修复,其机制可能与CD31和骨钙素表达增加有关。

CD31和CD105在卵巢上皮性肿瘤中的表达及其临床病理意义

目的探讨CD31和CD105在卵巢上皮性肿瘤及正常卵巢组织中的表达情况及其与卵巢肿瘤生物学行为之间的关系,并比较同为肿瘤血管内皮标记物的CD31和CD105在标记微血管方面的差异。方法收集天津市肿瘤医院临床、病理和预后资料完整的恶性卵巢上皮性肿瘤组织标本76例,病例标本采用免疫组化En Vision法检测CD31和CD105所标记的MVD数值,MVD计数参照Weidner方法进行量化分析,实验同时取20例交界性卵巢上皮性肿瘤、10例良性卵巢上皮性肿瘤和10例宫颈癌手术中切除的正常卵巢组织作为对照。结果①CD31蛋白在卵巢上皮性肿瘤的微血管和大血管上均有较强表达,在正常卵巢组织血管中亦有表达,恶性卵巢肿瘤中的MVD-CD31值(5.48±0.75)显著高于交界性卵巢肿瘤(2.24±0.61)、良性卵巢肿瘤(2.24±0.41)及正常卵巢组织(1.20±0.37)(P<0.01);在卵巢癌中,MVD-CD31值仅与有无淋巴结转移及组织学分级之间的差异有统计学意义(P<0.05),而与年龄、病理类型、肿瘤大小、腹水、有无远处转移无关(P>0.05)。②CD105蛋白在卵巢肿瘤微血管中有表达,在正常卵巢组织中呈微弱表达或无表达,恶性卵巢肿瘤中的MVD-CD105值(4.07±2.11)显著高于交界性卵巢肿瘤(2.08±0.30)、良性卵巢肿瘤(1.92±1.15)及正常卵巢组织(0.68±0.39)(P<0.05或P<0.01);在卵巢癌中MVD-CD105值与组织学分级、有无腹水、有无远处转移、有无淋巴结转移有关(P<0.05),而与年龄、病理类型、肿瘤大小等因素无关(P>0.05)。③恶性肿瘤组织中的MVD-CD31值显著高于MVD-CD105值(P<0.05)。结论在标染卵巢癌方面,CD105比CD31有明显优越性,CD105的表达与卵巢癌的生物学行为密切相关,MVD-CD105值的检测可更准确的确定肿瘤的临床分期、指导治疗及判断预后。

胰腺癌组织中EGFR和CD31的表达及其临床意义

目的探讨EGFR和CD31在胰腺癌组织中的表达及其临床意义。方法应用免疫组化SP法检测EGFR和CD31蛋白在88例胰腺导管腺癌(pancreatic ductal adenocar-cinoma,PDAC)和11例正常胰腺组织中的表达水平,并计算肿瘤组织微血管密度(microvessel density,MVD),分析其与胰腺癌临床分期及其与预后的关系。结果 PDAC组织中EGFR的表达明显高于正常胰腺组织(P<0.001);PDAC组织中MVD明显高于正常胰腺组织(P<0.001);胰腺癌组织中EGFR的表达与淋巴结有无转移及临床分期密切相关(P<0.05);胰腺癌组织中微血管密度与其有无淋巴结转移密切相关(P<0.05)。结论 EGFR和CD31在PDAC组织中的表达明显高于正常胰腺组织;并且与胰腺癌的临床分期和淋巴结转移相关,联合检测有助于判断胰腺癌患者的预后。