Purpose To exp1ore the expression and c1inica1 significance of epiderma1 growth factor receptor( EGFR)and human epi-derma1 receptor-2(HER-2)in co1orecta1 carcinoma. Methods Immunohistochemistry(IHC)PV-9000 was used to detect the expres-sion of EGFR and HER-2 in 78 cases of co1orecta1 carcinoma. Si1ver in situ hybridization( SISH)was used to detect HER-2 amp1ifica-tion in co1orecta1 carcinoma. Results The positive rates of EGFR in 78 co1orecta1 carcinomas were 69. 23%( 54/78 ). The differ-ences of the expression of EGFR between different depth of invasion group and 1ymph node metastasis group were statistica11y signifi-cant. The differences of the expression of EGFR between different aging group,gender group,tumor size,different histo1ogica1 grading group and Dukes stage were insignificant. The positive rates of HER-2 in 78 cases of co1orecta1 carcinoma were 25. 64%(20/78). The differences of the expression of HER-2 between different depth of invasion group and 1ymph node metastasis group were statistica11y sig-nificant. The differences of the expression of HER-2 between different aging group,gender group,tumor size,histo1ogica1 grading group and Dukes stage were insignificant. The expression of EGFR and HER-2 was positive1y corre1ated. Among the 20 cases of HER-2 protein overexpression,10 cases showed HER-2 gene amp1ification,15 cases showed HER-2 protein overexpression(~)by IHC and 10 cases showed HER-2 gene amp1ification by SISH. The rate of HER-2 gene amp1ification was 66. 67%. 5 cases with 1ow HER-2 protein overexpression( +)and no case showed HER-2 gene amp1ification. Conclusions EGFR and HER-2 are high1y ex-pressed in co1orecta1 carcinoma. EGFR and HER-2 expression is connected to invasion and metastasis process of co1orecta1 carcinoma. The both may be synergy. The corre1ation between HER-2 protein overexpression(~)and HER-2 gene amp1ification is statisti-ca11y significant. Therefore,immunohistochemistry can be regarded as an initia1 screening method for HER-2 gene amp1ification,and then SISH testing shou1d be done as we11 to confirm the resu1t. It is usefu1 for mo1ecu1ar target therapy to detect HER-2 status in co1or-ecta1 carcinoma.

Objective To investigate the effects of levothyroxine (Levo-thyroid hormone,L-TH4) in pregnancy subclinical hypothyroidism (SCHT), and study the relationship between L-TH4 with thyroid peroxidase (TPO) and glucose metabolism. The research could provide theoretical basis for the treatment of SCHT. Methods Sixty pregnant women were selected and signed the medical informed consent. The pregnancy were divided into three groups, 20 cases in each group.Normal control group: pregnancy underwent routine thyroid function normal; SCHT group: SCHT pregnancy patients who did not use drugs to treat SCHT; L-TH4 group: SCHT pregnancy patients given L-TH4 treatment. The blood was taken to test the contents of glucose level and HbA1c were observed; the activity of TSH and TPO were tested by ELISA method; HE staining method was used to observe the changing of placenta tissue. Results Compared with normal control group, the glucose and HbA1c were significantly increased in SCHT group (P<0.05). However, L-TH4 could decrease these index, compare with the SCHT group, and reduce the level of TSH and the activity of TPO, the difference was statistically significantly (P<0.05). Moreover, L-TH4 could improve the changing of placenta tissue. Conclusion L-TH4 could reduce blood glucose and HbA1c levels, also reduced the level of TSH and the activity of TPO in SCHT. L-TH4 could improve the changing of placenta tissue.

Objective To explore the anomalous expression of HDAC1 in cervical intraepithelial neoplasia(CIN)and cervical carcinoma and its relationship with the infection of HPV16/18. Methods The expressions of HDAC1 protein and HDAC1 infection were detected by in situ hybridiza?tion(ISH)and immunohistochemistry staining(SP)in tissues from patient with chronic cervicitis(the chronic cervicitis group),CIN(the CINⅠgroup,the CINⅡgroup and the CINⅢgroup)and cervical squamous carcinoma(the cervical carcinoma group). Results The infection rate of HPV16/18 was 8.33%,34.78%,48.00%,65.21%,78.00%in patients with chronic cervicitis,CINⅠ,CINⅡ,CINⅢand cervical carcinoma re?spectively. There was significant difference between groups(P<0.05). The positive expression rate of HDAC1 was 0,13.04%,32.00%,47.82%and 76.00%in chronic cervicitis,CINⅠ,CINⅡ,CINⅢand cervical carcinoma,respectively. The differences were statistically significant(P<0.05). The positive expression of HDAC1 in the HPV16/18 infected patients was significantly higher than those uninfected with HPV16/18(P<0.05). The HDAC1 positive expression had no relationship with clinical stages of cervical carcinoma,however,it was related to the tissue differentia?tion,stromal invasion and pelvic lymph node metastasis(all P<0.05). Conclusion The infection of HPV16/18 may play an important role in the carcinongenesis of SCC through increasing the expression of HDAC1.

This study was aimed to compare the activation of daidzein and puerarin on antioxidation, NO and NOS suppression in vitro . The RAW264 . 7 cell line was used to prepare radical reaction model induced by LPS (1 μg/mL). MTT method was adopted to detect cytotoxicity of daidzein and puerarin. The DCFH-DA probe and confocal microscopy were used to examine the antioxidant ability of daidzein and puerarin. Griess reagent was adopted to test the NO level in the culture medium. And chemical colorimetry was used to detect the content in RAW264.6 cells. The results showed that daidzein and puerarin can significantly suppress the NO and T-NOS expression in RAW264.7 cells induced by LPS. It was concluded that there was no difference on the activation of antioxidant free radical between daidzein and puerarin . In this regard , daidzein can be the used as substitutes of puerarin .

Objective To investigate the effects of inhibitor of growth 5 (ING5) gene on the proliferation, apoptosis, migration and cell cycle of human breast cancer Bcap-37 cells.Methods The eukaryotic ING5-expressing plasmid and GFP-empty plasmid were steadily transfected in Bcap-37 cells, the expression of green fluorescent protein was measured with fluorescence microscopy, and the high expression of ING5 was measured by real time-PCR. Bcap-37-ING5 cells served as the experimental group, Bcap-37-GFP cells as the mock group and Bcap-37 as the control group. The effects of ING5 on the proliferation were detected by MTT, the cell cycle and apoptosis were detected by Flow cytometry, and the cell migration was detected by cell wound scratch assay and Transwell experiment.Results Bcap-37 cell lines steadily expressing ING5 protein with GFP-tag were acquired by stable transfection. ING5 over-expression inhibited the proliferation and led to G2 arrest of Bcap-37 cells, increased cells apoptosis and decreased the cell migration ability (P<0.05).Conclusion ING5 over-expression may have reverse effect for malignant phenotype of breast cancer cells, and may be employed to indicate the biomarker of prognosis of breast cancer patients and regarded as a target of gene therapy.