Expression and correlation of Fascin-1 and EGFR in hormone receptor-positive breast cancer / 中国医师杂志

Objective To explore the expression and correlation of Fascin-1 and epidermal growth factor receptor (EGFR) in hormone receptor-positive breast cancer.Methods The immunohistochemical technique,EnVision method,was used to evaluate the expression of Fascin-1 and EGFR in 294 cases of hormone receptor-positive breast cancer,which contains 290 cases of estrogen receptor (ER) positive and 244 cases of progestrone receptor (PR) positive.According to ER,PR,Epidermal growth factor receptor 2 (HER2),and Ki-67 status,all cases of hormone receptor-positive breast cancer were categorized into 2 subtypes:160 cases of luminal A and 134 cases of luminal B.Results Fascin-1 and EGFR protein positive rates in hormone receptor-positive breast cancer was 13.9％ (41/294) and 30.6％ (90/294),respectively.Fascin-1 positive rate was significantly higher in EGFR positive cases (30.0％,27/90) than in EGFR negative cases (6.9％,14/204) (x2 =27.857,P =0.000).In the ER positive and PR positive cases,Fascin-1 positive rates were both significantly higher in EGFR positive cases than in EGFR negative cases (x2 =29.23,P =0.000;x2 =27.596,P =0.000,respectively).In the Luminal A and Luminal B subtype,Fascin-1 positive rates were also both significantly higher in EGFR positive cases than in EGFR negative cases (x2 =23.247,P=0.000;x2 =5.325,P=0.021,respectively).Conclusions EGFR signal pathway may positive regulate Fascin-1 expression in hormone receptor-positive breast cancer.

Effect of micro-incision phacoemulsification on IL-6， TNF-α and EGF expressions in tears of patients with cataract / 中国医师杂志

Objective To investigate the effect of micro-incision phacoemul-sification on cataract patients and its effect on interleukin (IL)-6, tumor necrosis factor-α (TNF-α), and epidermal growth factor (EGF) expressions in cataract patients.Methods With forward-looking research, 284 cataract patients were randomly included in the control (coaxial conventional incision phacoemulsification) or observation (coaxial micro-incision phacoemulsification) groups, with 142 cases per group.The effective phacoemulsification time and mean ultrasonic energy difference were compared between two groups, and the uncorrected vision recovery, Ocular Surface Disease Index (OSDI), tear break-up time (BUT), schirmer I test (SIt), corneal fluorescence stain (FL), and the expressionsIL-6, TNF-α and EGF were measured in two groups on preoperative (T0), 1 week after operation (T1), 2 weeks after operation (T2), 4 weeks after operation (T3), and the above indicators of Spearman correlation analysis.Results There was no significant difference in effective phacoemulsification time and mean ultrasonic energy between two groups (P ＞ 0.05).The improvement of uncorrected visual acuity in observation group was significantly better than that in the control group (F=6.116, P =0.032).In addition, OSDI, FL,IL-6,TNF-α, and EGF showed the first increase and then decreased at different time points, and the observation group was superior to the control group with statistically significant difference.At the same time, BUT and SIt showed a trend of increasing first and then decreased, and the observation group was superior to the control group with statistically significant difference.In addition, IL-6, TNF-α, and EGF expressions were positively correlated with OSDI and FL scores (P ＞ 0.05).Conclusions Micro-incision phacoemulsification can help reduce the expressions of IL-6 and TNF-α, improve the expression levels of EGF in cataract patients, and reduce the incidence of adverse symptoms such as dry eye after operation.It might improve the clinical therapeutic effect.

EGFR RNAi inhibits bleomycin induced pulmonary fibrosis in mice / 中国医师杂志

ObjectiveTo investigate the effect of down-regulating epidermal growth factor receptor (EGFR) expression on Bleomycin induced pulmonary fibrosis in mice.MethodsForty 4 ～6 week aged C57BL/c male mice were randomly divided into control,bleomycin,bleomycin plus EGFR RNAi groups and RNAi negative control group.Bleomycin group were treated with bleomycin (3 mg/kg) by endotracheal injection on day 0,control group were treated with PBS.And bleomycin plus EGFR RNAi group were received EGRF siRNA plus bleomycin intratracheal administration.RNAi negative control group received negative EGRF siRNA plus bleomycin intratracheal administration.Mice were sacrificed 10 days after the treatments.Hydroxyproline (HYP) assay was performed in the lung tissue.The lung tissue slides were examined pathologically with H.E.staining,and EGFR mRNA expression was detected by reverse transcriptasepolymerase chain reaction (RT-PCR) technique.Western blot were performed to identify the protein level.of total EGFR and phosphorylated EGFR.ResultsHistological examination of lung specimens demonstrated that EGFR siRNA administration lessened lung fibrosis induced by bleomycin and significantly reduced HYP content (543.00±25.89 vs 900.73±31.77,P＜0.01).EGFR mRNA (0.31±0.05 vs 0.75±0.08,P ＜0.01) and protein expression(1.53±0.47 vs 2.56±0.37,P ＜0.01) in EGFR siRNA-treated mice was significantly decreased.The expression of phosphorylation of EGFR protein (1.78±0.35 vs 2.84±0.51,P ＜0.01) and EGFR protein in RNAi group was less than in bleomycin group.Conclusions EGFR RNAi reduced the BLM-induced lung fibrosis by inhabiting EGFR activation.

Expression of cyclooxygenase-2 and epidermal growth factor receptor in astrocytomas and its clinical significance / 中国医师杂志

Objective To investigate the expression of cyclooxygenase-2 (COX-2) and epidermal growth factor receptor (EGFR) in astrecytomas, as well as the correlation between them. Methods The expression of COX-2, EGFR and PCNA were respectively detected by immunohistochmical (S-P) method in 68 astrocytomas and 5 cases normal brain tissue. Proliferation index (PI) was calculated and the correlation of COX-2, EGFR and PI was analyzed. Results COX-2 and EGFR were negative expression in normal brain tissue. The positive expression rate of COX-2 and EGFR in high grade astrocytomas was significantly higher than that in low grade astrocytomas(73.53% vs 44. 18% ,67.65% vs 38.24%, P <0. 01 ), and the PI was significantly higher than that in low grade astrocytumas as well as normal brain tissue(46.11 ± 10. 68vs 23. 04±6. 25,4. 52±0. 95, P <0. 01 ). The PI in COX-2 positive group was higher than that in negative group( P <0. 01 ). The positive expression rate of COX-2 in the group with EGFR positive expression was higher than that in the negative group. Conclusions The expression of COX-2 and EGFR was related to pathological feature of astrocytomas. COX-2 may promote the proliferation of tumor cells. There was a static correlation between the expression of EGFR and COX-2 in astrocytomas. EGFR signal transduction probably modulated the expression of COX-2 in astrocytomas cells.