Expression of TLR4 and CXCR7 in gastric carcinoma and its relationship with HP positive infection / 中国基层医药

Objective To explore the role and mechanism of Toll-like receptor 4(TLR4)and chemokine receptor 7(CXCR7)in the pathogenesis and development of Helicobacter pylori(HP)positive gastric cancer.Methods Tissues of 147 cases with gastric carcinoma and 60 normal control were collected.The protein expression of TLR4,CXCR7 was detected by immunohistochemical staining.HP infection in these samples were detected by immunohistochemistry and Gram staining.Results The positive rates of TLR4 and CXCR7 in gastric cancer tissues were 63.9% and 62.6%,respectively,which were significantly higher than those in normal control group(15.0% and 5.0%,respectively;X2=40.832,56.901,all P<0.01).The positive rates of TLR4 and CXCR7 in patients with lymph node metastasis were significantly higher than those without lymph node metastasis(X2=9.809,11.444,all P<0.01).The positive rates of TLR4 and CXCR7 in patients with stage Ⅲ and Ⅳ were significantly higher than those of stageⅠand Ⅱ(X2=24.927,27.642,all P<0.01).The expression of TLR4 and CXCR7 in gastric carcinoma was significantly related to HP infection.Kaplan-Meier survival analysis showed that the survival rates in TLR4 and CXCR7 positive group were significantly lower than those in TLR4 and CXCR7 negative groups(F=4.053,4.091,all P<0.05).COX regression analysis indicated that the TNM stage,the expression of TLR4 and CXCR7 were independent prognosis factors of gastric carcinoma.Conclusion TLR4 and CXCR7 are closely related to the occurrence and development of gastric cancer,and may play an important role in HP carcinogenesis.It may be involved in the invasion and metastasis of gastric cancer cells via LPS/TLR4 signaling pathway.

T Cell Factor 4, beta-catenin and SFRP1 Expression of Wnt Signaling Pathway in Colorectal Carcinoma and the Prognosis / 生物医学工程学杂志

Abnormal activation of Wnt signaling pathway is closely related to the occurrence of tumor, and T cell factor 4 (Tcf4 ) and beta-catenin are important signal transmission factors of this pathway. The aim of the present study is to explore the significance and correlation between expression of Tcf4, beta-catenin and secreted frizzled related protein 1(SFRP1), suppressor gene of Wnt signaling pathway, in colorectal carcinoma and their correlations to the clinicopathological factors. The expressions of Tcf4, beta-catenin and SFRP1 were performed with immunohistochemistry staining in 97 cases of primary colorectal carcinoma and 40 cases of normal colorectal mucosa tissues. The results showed that the abnormal expression rates of Tcf4 and beta-catenin in colorectal carcinoma were significantly higher than those in the control groups (P<0.01). The positive rate of SFRP1 was significantly lower than those in the control groups (P<0.01). The abnormal expression rates of Tcf4 and beta-catenin were also related to the lymph node metastasis and Dukes stage (P<0.05). A significant correlation was found between the expressions of SFRP1 and Tcf4, beta-catenin (P<0.05). Overexpression of Tcf4 and beta-catenin was related to poor prognosis (P<0.05). But the survival rates of the group with SFRP1 expressions were higher than those in group without SFRP1 expressions (P<0.05). Cox multifactor regression analysis indicated that Dukes stage, expression of beta-catenin and SFRP1 were independent risk factors of colorectal carcinoma (P<0.05). The results suggested that the abnormal expression of Tcf4 and beta-catenin in colorectal cancer may be related to the reduced or absent expression of SFRP1. beta-catenin accumulation in the nuclei formed complexes with Tcf4 is one of the important molecular switch maintaining colorectal malignant phenotype. The combined detection of these indexes may perform an important role in predicting the progression and prognosis of colorectal cancer, and could provide new molecular targets for gene treatment of colorectal cancer.

Expressions of CD133, E-cadherin, and Snail in epithelial ovarian cancer and their clinicopathologic and prognostic implications / 南方医科大学学报

<p><b>OBJECTIVE</b>To explore expressions of CD133, E-cadherin and Snail in human epithelial ovarian cancer (EOC) and elucidate their relationship with the clinicopathologic features and prognosis of the patients.</p><p><b>METHODS</b>The expression of CD133, E-cadherin and Snail were detected by immunohistochemical staining in 150 specimens of EOC and 50 specimens of benign ovarian epithelial tumor tissues.</p><p><b>RESULTS</b>The positivity rates of CD133, E-cadherin and Snail protein in EOC were 58.7%, 60.7% and 32.7%, respectively, significantly different from the rates in benign epithelial tumor tissues (10%, 8.0%, and 70%, respectively; P<0.05). The expressions of CD133, E-cadherin and Snail in EOC were significantly correlated with abdominal organ and lymphnode metastases and FIGO stage (P<0.01). E-cadherin expression was inversely correlated with Snail and CD133 expression (r=-0.545 and -0.570, P<0.01), and the latter two were positively correlated (r=0.599, P<0.01). Overexpressions of CD133 and Snail and a decreased expression of E-cadherin were all related to a poor prognosis of the patients (P<0.05). FIGO stage and expressions of CD133, E-cadherin and Snail were all independent prognostic factors of EOC (P<0.05).</p><p><b>CONCLUSION</b>The expressions of CD133, E-cadherin and Snail are related to lymph node metastasis, clinical stage, and prognosis of EOC. Combined detection of these indexes provides important evidence for predicting the progression and prognosis of EOC.</p>

Expression of CD133 and Notch1 in non-small cell lung cancer and the clinicopathological significance / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the presence of cancer stem cells (CSCs) exist in non-small cell lung cancer (NSCLC) and explore the relationship among the expressions of CD133, Notch1, and vascular endothelial growth factor (VEGF) and their relations with the clinicopathological parameters of the patients.</p><p><b>METHODS</b>A total of 305 specimens of NSCLC and 80 normal lung tissue specimens were analyzed for CD133, Notch1, and VEGF protein expressions by immunohistochemical staining.</p><p><b>RESULTS</b>In NSCLC specimens, the positivity rates of CD133, Notch1, and VEGF were 48.9%, 43.9%, and 45.6%, respectively, significantly higher than those in normal lung tissues (10.0%, 15.0%, and 0%, respectively, P<0.01). The expression levels of CD133, Notch1, and VEGF proteins were significantly correlated with the tumor grades, lymph node metastasis, TNM stages, and postoperative survival time of the patients (P<0.01). A positive correlation was found among the expression levels of CD133, Notch1, and VEGF proteins. Kaplan-Meier survival analysis showed a significantly lower overall mean survival time of the patients positive for CD133, Notch1, and VEGF than that of the negative patients (P<0.001). Cox regression analysis suggested that positive expressions of CD133 and Notch1 were independent prognostic factors of NSCLC (P<0.05).</p><p><b>CONCLUSIONS</b>CD133, Notch1, and VEGF may play important roles in the occurrence, progression, invasion, and metastasis of NSCLC. CD133 and Notch1 have important values for predicting the prognosis and evaluating disease progression of the patients.</p>

Expressions of Snail, Slug and KAI1 proteins in cervical carcinoma and their clinicopathological significance / 南方医科大学学报

<p><b>OBJECTIVE</b>To explore the expression of Snail and Slug in primary cervical squamous cell carcinoma (CSCC) and their relationship with KAI1 expression.</p><p><b>METHODS</b>The expressions of Snail, Slug, and KAI1 proteins were examined by immunohistochemistry in 154 specimens of CSCC tissues, 50 specimens of cervical intraepithelial neoplasm (CIN), and 40 specimens of normal cervical tissues.</p><p><b>RESULTS</b>The positivity rates of Snail, Slug, and KAI1 expression were 0%, 2.5%, and 95.0% in normal cervical tissues, 32.0%, 34.0% and 64.0% in CIN tissues, and 66.2%, 66.9%, and 43.5% in CSCC tissues, respectively, showing significant differences in the rates among the 3 groups (P<0.05). The expressions of Snail, Slug, and KAI1 were significantly correlated with the histological grades of the tumor, depth of invasion, lymph node metastasis, International Federation of Gynecology and Obstetrics (FIGO) stages, and postoperative survival time (P<0.05). The expressions of Snail and Slug were positively correlated (r=0.752, P<0.001), and both of them were negatively correlated with the expression of KAI1 (P<0.001). Kaplan-Meier analysis showed that patients positive for Snail and Slug had significantly lower survival rates than the negative patients (P<0.001), while a positive expression of KAI1 was associated with a higher survival rate of the patients. Cox regression analysis identified Snail, KAI1, and FIGO stage as independent factors that affected the outcomes of CSCC (P<0.05).</p><p><b>CONCLUSION</b>The expressions of Snail, Slug, and KAI1 are related to the tumor grade, FIGO stage, invasive depth, lymph node metastasis, and prognosis of CSCC, and their combined detection can help estimate the outcomes of the patients.</p>

Infection with L-form of Helicobacter pylori and expressions of MIF, MMP9 and VEGF in gastric carcinoma / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the correlation between infection with L-form of Helicobacter pylori (Hp-L) and the expressions of macrophage migration inhibition factor (MIF), matrix metalloproteinase 9 (MMP9), and vascular endothelial growth factor (VEGF) in gastric cancer.</p><p><b>METHODS</b>Hp-L was examined in 80 gastric carcinoma and 50 adjacent normal tissues by Gram staining and immunohistochemical staining, and the expressions of MIF, MMP9 and VEGF were detected by immunohistochemical staining; the expression of MIF mRNA was detected by RT-PCR and the expression of MIF, MMP9 and VEGF proteins were detected by Western blotting in 30 fresh gastric cancer tissues and the corresponding adjacent tissues.</p><p><b>RESULTS</b>Of the 80 gastric carcinoma tissues, 57 (71.25%) showed Hp-L positivity detected by both Gram staining and immunohistochemical staining, as compared with a rate of only 14% in the adjacent normal tissues (P<0.05). The gastric carcinoma tissues showed higher expression levels of MIF, MMP9 and VEGF proteins than the corresponding adjacent normal mucosa; the positivity MIF, MMP-9 and VEGF proteins were significantly higher in Hp-L-positive gastric carcinoma than in Hp-L-negative cases (P<0.05). Positive correlations were found between Hp-L positivity and the expressions of MIF, MMP-9 and VEGF (r=0.598, 0.292, 0.341, respectively, P<0.05). The 30 fresh gastric cancer tissues showed also significantly higher MIF mRNA expression and MIF, MMP-9 and VEGF protein expressions than the adjacent tissues (t=3.729, P<0.01). The expressions of MIF and MMP-9 were also related to the clinicopathological factors including lymph node metastasis and depth of invasion (P<0.05).</p><p><b>CONCLUSION</b>Infection with L-form of Hp-L can be an important factor that contributes to the invasion and metastasis of gastric carcinoma, the mechanism of which involves up-regulated expressions of MIF, MMP-9 and VEGF.</p>

2-Deoxy-D-glucose combined with Taxol inhibits VEGF expression and induces apoptosis in orthotopically transplanted breast cancer in C3H mice / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the antineoplastic effects of 2-Deoxy-D-glucose (2-DG) combined with Taxol on orthotopically transplanted breast cancer in C3H mice and explore the mechanism.</p><p><b>METHODS</b>C3H mice bearing orthotopically transplanted breast cancer xenograft were randomly divided into 4 groups, namely the control group, 2-DG group, Taxol group, and 2-DG+Taxol group. The corresponding drugs were administered intraperitoneally every 3 days for 18 consecutive days, and the tumor volume was measured every 3 days to draw the tumor growth curve. The mice were then sacrificed to measure the tumor weight on day 19 and examine tumor cell apoptosis with TUNEL assay and VEGF expression using immunohistochemistry.</p><p><b>RESULTS</b>2-DG combined with Taxol obviously suppressed the tumor growth with a tumor inhibition rate of 66.06% as compared to the rate of 36.97% in Taxol group. The combined treatment also caused more obvious cell apoptosis and significantly reduced VEGF expression in the tumor cells as compared with the other groups.</p><p><b>CONCLUSION</b>2-DG can enhance the inhibitory effect of Taxol on orthotopically transplanted breast cancer xenograft in C3H mice probably by inducing tumor cell apoptosis and lowering VEGF expressions.</p>

Expression of Wnt-1 and β-catenin in cervical squamous cell carcinomas and relationship with metastasis / 临床与实验病理学杂志

Purpose To investigate the expression of Wnt-1 and β-catenin protein in cervical squamous cell carcinomas ( CSCC) and their relationship with invasion and lymph node metastasis. Methods Expression of Wnt-1 and β-catenin protein were examined on immunohistochemistry containing 78 specimens of CSCC and 30 specimens of normal cervical tissues. Results The positive rates of Wnt-1 and β-catenin protein in normal cervical tissues were 20.0% and 10.0% respectively. The positive rates of Wnt-1 andβ-cate-nin protein in CSCC were 56.4%, and 74.4% respectively. There was a significant difference between the two groups (P0.05). Spearman analysis showed that the expression of Wnt-1 protein was positive related to the expression ofβ-cate-nin protein (rs =0.490, P<0.001). Conclusion The abnormal expression of Wnt-1 and β-catenin may be involved in initiation, development, invasion, and metastasis of CSCC, and it is suggested that Wnt-1 and β-catenin be considered as potential markers for invasion, metastasis, and prognosis.

Vasculogenic mimicry in laryngeal squamous cell carcinoma and its clinicopathological significance / 生物医学工程学杂志

The present paper aims to investigate whether or not vasculogenic mimicry (VM) exists in laryngeal squamous cell carcinoma (LSCC), and to elucidate its relationship to microvessel density (MVD), galectin-3 (Gal-3) expression, and clinicopathological factors of patients with LSCC. VM, score of MVD and expression of Gal-3 protein were detected by immunohistochemistry and histochemistry in 83 specimens of LSCC tissue and 20 specimens of normal laryngeal tissue. The positive rate of VM in normal laryngeal tissues was 0%, and was 33.7% in LSCC tissues. There was a significant difference between the two groups (P<0. 01). VM or MVD was significantly related to differentiation, pTNM stages and lymph node metastasis of LSCC (P<0.05), but not to age, gender and tumor site (P>0. 05). And there was a positive correlation between every two of VM, score of MVD, and Gal-3 protein (P< 0. 05). The results suggest that expression of Gal-3 protein may be related to the initiation, angiogenesis and VM formation in LSCC; And VM, angiogenesis and Gal-3 protein may be involved in the development, invasion and metastasis of LSCC.

Expression of maspin in non-small cell lung cancer and its relationship to vasculogenic mimicry / 华中科技大学学报（医学）（英德文版）

Maspin belongs to the serine protease inhibitor (serpin) family and has been proven to be a suppressor of tumor growth and metastasis in many types of tumors. The purpose of this study was to investigate the expression of maspin in non-small cell lung cancer (NSCLC) and its relationship to vasculogenic mimicry (VM). A total of 160 specimens of NSCLC were involved in this study and 20 specimens of normal lung tissue served as controls. VM, microvessel density (MVD) and the expression of maspin were detected by using immunohistochemical staining. The results showed that the positive rates of maspin and VM in the NSCLC group were 48.1% (77/160) and 36.9% (59/160), respectively, which were significantly different from those in the control group with the positive rates of maspin and VM being 100% and 0% respectively (P<0.05). VM, MVD and the expression level of maspin were significantly related to tumor differentiation, lymph node metastasis, clinical stages and postoperative survival time (all P<0.05). The maspin expression in patients with squamous cell carcinoma was significantly higher than that in those with adenocarcinoma (P<0.05). The maspin expression was negatively correlated with VM and MVD, and there was a positive correlation between VM and MVD. Maspin-negative expression, VM and high MVD score were negatively related to the 5-year-survival rate. PTNM stages, VM, MVD and maspin expression were independent prognostic factors for NSCLC (P<0.05). It was suggested that the loss of expression of maspin may participate in the invasion and metastasis of NSCLC and it has a positive relationship to VM in NSCLC. Combined detection of maspin, VM and MVD may help predict the progression and prognosis of NSCLC.

Expression of maspin in non-small cell lung cancer and its relationship to vasculogenic mimicry / 华中科技大学学报（医学）（英德文版）

Maspin belongs to the serine protease inhibitor (serpin) family and has been proven to be a suppressor of tumor growth and metastasis in many types of tumors. The purpose of this study was to investigate the expression of maspin in non-small cell lung cancer (NSCLC) and its relationship to vasculogenic mimicry (VM). A total of 160 specimens of NSCLC were involved in this study and 20 specimens of normal lung tissue served as controls. VM, microvessel density (MVD) and the expression of maspin were detected by using immunohistochemical staining. The results showed that the positive rates of maspin and VM in the NSCLC group were 48.1% (77/160) and 36.9% (59/160), respectively, which were significantly different from those in the control group with the positive rates of maspin and VM being 100% and 0% respectively (P<0.05). VM, MVD and the expression level of maspin were significantly related to tumor differentiation, lymph node metastasis, clinical stages and postoperative survival time (all P<0.05). The maspin expression in patients with squamous cell carcinoma was significantly higher than that in those with adenocarcinoma (P<0.05). The maspin expression was negatively correlated with VM and MVD, and there was a positive correlation between VM and MVD. Maspin-negative expression, VM and high MVD score were negatively related to the 5-year-survival rate. PTNM stages, VM, MVD and maspin expression were independent prognostic factors for NSCLC (P<0.05). It was suggested that the loss of expression of maspin may participate in the invasion and metastasis of NSCLC and it has a positive relationship to VM in NSCLC. Combined detection of maspin, VM and MVD may help predict the progression and prognosis of NSCLC.

The expression of RhoC mRNA in gastric carcinoma / 中国综合临床

Objective To investigate the expression of RhoC mRNA in the gastric carcinoma (GC) and paracarcinoma gastric mucosa tissues (PGMT) and their relationship with clinical pathological features.Methods RhoC mRNA was examined by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) in 23 cases of primary gastric carcinoma and the paracarcinoma gastric mucosa tissues.Results The opacity density of RhoC mRNA in 23 cases of GC was 1.40±0.23,higher than that of PGMT (0.36±0.15)(P<0.01).In addition.RhoC mRNA in gastric carcinoma tissues were positively related to invasion depth,TNM stage and lymph node metastasis (P<0.01),Conclusion The overexpression of RhoC mRNA in GC may be closely related to the carcinogenesis,development,invasion and metastasis of gastric carcinoma,which is a frefered biomarker for early diagnosis.

Lymphadenitis in cat scratch disease(CSD):A clinicopathological study / 临床与实验病理学杂志

Purpose　To study the main points of the diagnosis and differential diagnosis of the lymphadenitis in CSD. Methods　Expression of CD45, CD3 and CD68 were evaluated immunohistochemically (S-P method). Results　Five cases of microabscess in early stage and 21 cases of microabscess-granuloma were found. The histologic features were the formation of microabscess and granuloma. The early microabscess in the lymphnodes were surounded by B lymphocytes (CD20+) and macrophages (CD68+). The typial microabscess granuloma were surrounded by epitheloid cells (CD68+) and CD3 positive T lymphocytes. Conclusion　The main characteristic of the lymphadenitis of cat scratch disease is the formation of granuloma with microabscess. The immumohistochemical markers are useful to distinguish the proliferative cell types. This lesion may result from bacterial infection which induces the cell immune reaction.