Expression of Trem-1 and its significance in psoriasis vulgaris / 西安交通大学学报(医学版)

Objective To study the expression of triggering receptor expressed on myeloid cells-1 (Trem-1)in psoriatic vulgaris and normal skin tissues and blood,and to explore the potential pathogenesis of psoriasis.Methods Immunohistochemistry and Real-time PCR were used to detect the expression of Trem-1 in the blood and tissues of normal skin and psoriasis.Results The positive expression rate of Trem-1 in psoriatic lesion was significantly higher than normal tissue.Trem-1 was expressed in the whole epidermis,with a significant difference (P<0.05). The mRNA expression of Trem-1 was significantly higher in psoriatic skin tissues and blood than in normal skin tissues and blood (P<0.05).Moreover,the mRNA expression of Trem-1 was positively correlated with PASI (P<0.05).Conclusion Abnormal expression of Trem-1 might be related to the pathogenesis of psoriasis.Trem-1 will cure psoriasis vulgaris as the potential therapeutic target.

Correlation between overexpression of PC4 in lung adenocarcinoma with lymph node metastasis / 重庆医学

Objective To investigate the promotion effect of human transcriptional positive cofactor 4 (PC4) overexpression on lymphatic metastasis in lung adenocarcinoma .Methods 96 samples of lung adenocarcinoma tissue were collected .The immuno‐histochemistry(IHC) and real‐time quantitative polymerase chain reaction (qRT‐PCR) were adopted for detecting the expression levels of PC4 protein and mRNA .The correlation of PC4 expression with lymphatic metastasis and TNM stage was analyzed .Re‐sults The expression of PC4 protein was positively correlated mRNA in lung adenocarcinoma (r=0 .63 ,P<0 .01);the expression of PC4 protein was positively correlated with lymph node metastasis (χ2 =8 .29 ,P<0 .01) and TNM stage (χ2 =4 .71 ,P<0 .05);the expression of PC4 mRNA was also positively correlated with lymph node metastasis (χ2 = 8 .40 ,P< 0 .01) and TNM stage (χ2 =5 .10 ,P<0 .05) .Conclusion PC4 overexpression is found to be closely associated with the lymph node metastasis and TNM stage .PC4 may facilitate the lymph node metastasis of lung adenocarcinoma .

Loss of Liver Fatty Acid Binding Protein Expression in Hepatocellular Carcinomas is Associated with a Decreased Recurrence-Free Survival

BACKGROUND/AIMS: Loss of liver fatty acid binding protein (LFABP) expression by immunohis-tochemistry is a useful marker for the identification of hepatocyte nuclear factor 1alpha (HNF1alpha)-inactivated hepatocellular adenomas; however, the expression status of LFABP in hepatocel-lular carcinomas (HCCs) is still unclear. We aimed to investigate the expression status of LFABP in HCCs and examine the clinicopathological characteristics of LFABP-negative HCCs. METHODS: Immunohistochemical stains LFABP, K19 (mouse monoclonal, Dako, Glostrup, Den-mark) and EpCAM (mouse monoclonal, Calbiochem, Darmstadt, Germany) were performed on tissue microarray sections from 188 surgically resected HCCs, and the association between LFABP expression status and the clinicopathological features, survival and "stemness"-related marker expression status were analyzed. RESULTS: Loss of LFABP expression was noted in 30 (16%) out of 188 HCCs. LFABP-negative HCCs were associated with a decreased recurrence-free survival (LFABP-negative: 17.0 +/- 4.84 months [95% confidence interval [CI]: 7.5-26.5 months] versus LFABP-positive: 51.0 +/- 8.7 months [95% CI: 34.0-68.0 months]; P=0.004). HCCs with LFABP expression loss were more frequently larger and showed more frequent vascular invasion, although not statistically sig-nificant; and an inverse correlation was seen between LFABP expression and K19 expression status (P=0.001). CONCLUSIONS: Loss of LFABP expression is seen in HCCs, and is associated with a decreased recurrence-free survival.

Expressions of MCM5 and P16INK4A in cervical squamous cell carcinoma / 西安交通大学学报(医学版)

Objective To investigate the expressions of minichromosome maintenance protein 5 (MCM5)and P1 6 INK4A gene and protein in cervical squamous cell cancer (SCC),cervical intraepithelial neoplasia (CIN)and normal tissues.Methods Real-time PCR and immunohistochemistry were used respectively to detect the expression levels of mRNA and protein of MCM5 and P1 6 INK4A in 40 cases of cervical cancer,1 1 cases of CIN I,1 5 cases of CIN Ⅱ - Ⅲ and 1 5 cases of normal cervical tissues.Results ① The expression levels of mRNA and protein of MCM5 and P1 6 INK4A in tissues of cervical squamous cell cancer were significantly higher than those in normal cervical tissues,CIN I and CIN Ⅱ-Ⅲ tissues (P 0.05 ).② The high expression of MCM5 mRNA and protein in cervical squamous cell carcinoma was positively correlated with clinical stage and differentiation grade of cervical cancer (P 0.05).P1 6 INK4A expression exhibited no correlation with clinical stage or age of patients (P >0.05),but positive correlation with differentiation grade (P <0.01).③ A positive correlation was found between MCM5 and P1 6 INK4A expressions in cervical cancer (r = 0.538,P <0.01).Conclusion The over-expressions of MCM5 and P1 6 INK4A may play an important role in the carcinogenesis and progression of cervical cancer.MCM5 may be used as a new marker of the proliferation of cervical cancer. Detection of P1 6 INK4A and MCM5 is of great significance to studying the grade and outcome of CIN,which may improve the rate of cervical cancer screening.

Relation of pituitary tumor transforming gene expression changes and prostate cancer progression after the maximum androgen blockade therapy / 中华泌尿外科杂志

ssion of prostate cancer. Over-expression of PTTG and high Gleason grade are independent adverse predictors of pro-gression-free survival for patients with local or locally advanced prostate cancer.

Clinicopathological observation of serous microcystic adenoma of pancreas / 中华肝胆外科杂志

Objective To investigate the clinicopathologieal features of serous microcystic adenoma of the pancreas. Methods Clinicopathological analysis, histochemieal and immunohistochemical studies were performed in 12 cases of serous microcystic adenoma of the pancreas with follow-up. Results The patients included 9 females and 3 males who ranged in age from 35 to 70 (mean=51.5). Seven patients were discov-ered by check-up incidentally and 5 for the symptoms as upper abdominal uncomfortable or pain. Tumors varied in size from 2.0 cm to 13 cm in maximal diameter(mean=6.0 cm), and all had a multicystic appear-ance. Histologically, all tumors were composed of numerous microcysts lined by a single layer of cuboidal or flattened cells. The tumor cells contained clear cytoplasm with glycogen and centrally located round nuclei mostly uniform without any atypia. Mitoses were very rare or absent. Histochemically, the tumor cells were positive for PAS and negative for AB-PAS. Immunohistochemieally, the tumor cells revealed diffuse positivi-ty of cytokeratins and epithelial membrane antigen, whereas CEA, CgA, Syn, CD34, Vimentin, P53 and S-100 protein were negative. Follow-up in 10 patients (range from 12 to 71 months) showed no recurrence of serous cystadenomas. Conclusion Serous microcystic adenoma of the pancreas is an extremely rare tumor. It is often non-symptomatic. Its diagnosis is mainly dependent on its unique morphological immunohistochemical features. It's biology behavior is necessary to study.

Expression and their significance of c-Met and TIMP-2 in laryngeal squamous cell carcinoma / 中国耳鼻咽喉头颈外科

OBJECTIVE To study the expression of c-Met,TIMP-2 in laryngeal squamous cell carcinoma and to explore the function and relationship of c-Met,TIMP-2 in the invasion and metastasis of laryngeal squamous cell carcinoma. METHODS Immunohistochemical method(SP) was used to detect the expression of c-Met,TIMP-2 in 41 laryngeal squamous cell carcinoma specimens and 15 specimens adjacent to the tumors.RESULTS The positive rate of c-Met and TIMP-2 in laryngeal squamous cell carcinoma specimens was 56.1% (23/41)and 63.4%(26/41)respectively.The positive rate of c-Met in tissues adjacent to tumors was 13.3%(2/15).No positive expression of TIMP-2 was found in tissues adjacent to tumors.CONCLUSION The expression of c-Met showed a positive correlation with histological differentiation and cervical lymph node metastasis and TIMP-2 showed a positive correlation with cervical lymph node metastasis in laryngeal squamous cell carcinoma.There was no significant relation between the expression of c-Met and TIMP-2 in laryngeal squamous cell carcinoma.

Expression of Survivin, CyclinD1, p21WAF1, Caspase-3 in Cervical Cancer and Its Relation with Prognosis / 华中科技大学学报（医学）（英德文版）

The implications of Survivin, CyclinD1, p21WAF1, Caspase-3 in the development, progression and prognosis in cervical cancer were investigated. By using immunohistochemical SP method, the expression of Survivin, CyclinD1, p21WAF1 , Caspase-3 was detected in 41 cases of cervical cancer, 17 cases of cervical intraepithelial neoplasia (CIN) and 10 cases of normal tissues, and their relation with pathological grade, clinical stage, metastasis and survival time was analyzed.The results showed that the positive expression rate of Survivin, CyclinD1 in cervical cancer was significantly higher than in CIN group and normal control group (P＜0.05). The median survival time in the patients with cervical cancer positive for Survivin and CyclinD1 was significantly shorter than in those with negative expression (P＜0.05). The expression of both Survivin and CyclinD1 was not related with tumor grade, clinical stage and metastasis (P＞0. 05). The positive expression rate of p21WAF1 , Caspase-3 in cervical ca rcer was significantly lower than in CIN group and normal control group (P＜0.05), and had a close relation with tumor grade (P＜0.05). The expression of Survivin in cervical cancer in cervical cancer was negatively associated with that of Caspase-3 (P＜0.01), but positively with that of CyclinD1 (P＜0.01). Cox Multivariate analysis revealed that Survivin was the independent prognostic indicator influencing the survival time of the patients with cervical cancer (P＜0.05). It was suggested that the high expression of Survivin or CyclinD1, and low expression of p21WAF1 or Caspase-3 was closely correlated with the development of cervical cancer. Survivin and CyclinD1 could be used as a useful indicator to predict the prognosis of cervical cancer.

Study on Hepatitis B Virus Infection Status in Plancetas of Hepatitis B Surface Antigen Positive Pregnant Women During Middle and Late Period of Pregnancy / 中华妇产科杂志

Objective To investigate Hepatitis B Virus (HBV) infection status in placentas of Hepatitis B Surface Antigen (HBsAg) positive pregnant women during middle and late period of pregnancy. Methods One hundred and sixty seven placentas from HBsAg positive pregnant women were collected, including 158 term placentas and 9 aborted second trimester placentas. HBsAg and hepatitis B core antibody (HBcAg) in placental cytotypes were detected by immunohistochemistry. Results Of the 158 term placentas, HBV infection rates in decidual cells (DC), trophoblastic cells (TC), villous mesenchymal cells (VMC) and villous capillary endothelial cells (VCEC) were 66 46% (105/158), 58 23% (92/158), 27 22% (43/158) and 12 66% (20/158), respectively. The HBV infection rates gradually decreased from maternal side to fetal side of placentas. Both HBsAg and HBcAg were mainly located in the cytoplasm of infected cells. The positive cells were mostly in focal distribution. One out of 9 aborted second trimester placentas was infected. Conclusions HBV infection was found in different cells of term placentas. The positive rates for HBsAg and HBcAg in placentas were gradually decreased from maternal side to fetal side. The positive rate was low in aborted second trimester placentas.