Expression of EGFR in breast cancer and its correlation to molecular subtyping and hormone receptor status / 中华内分泌外科杂志

Objective To study the expression of epidermal growth factor receptor 1 (EGFR) protein in breast cancer and its correlation to molecular subtyping and hormone receptor status.Methods 467 cases of breast cancer were included.According to ER,PR,HER2,and Ki-67 status,the cases were categorized into 4 molecular subtypes,including 185 cases of luminal A,109 cases of luminal B,76 cases of HER2-enriched,and 70 cases of triple-negative breast cancer (TNBC).According to ER and PR status,the cases were divided into 4 subtypes,including 240 cases of ER+/PR+,50 cases of ER+/PR-,4 cases of ER-/PR+,and 173 cases of ER-/PR-.Results EGFR protein expression rates in Luminal A,Luminal B,HER2-enriched and TNBC were 16.8％(31/185),54.1％(59/109),97.4％(74/76),78.6％(55/70),respectively.The EGFR expression in HER2-enriched was significantly higher than those in TNBC,Luminal B and Luminal A(P＜0.01),and EGFR expression in TNBC was significantly higher than those in Luminal B and Luminal A (P＜0.01),furthermore,EGFR expression in Luminal B was significantly higher than that in Luminal A (P＜0.01).EGFR protein expression rates in ER+/PR+ subtype,ER+/PR-subtype,ER-/PR+ subtype and ER-/PR-subtype were 25.4％ (61/240),52.0％ (26/50),75.0％ (3/4),88.4％(153/173),respectively.The EGFR expression in ER-/PR-subtype was significantly higher than in ER+/PR+ subtype and ER+/PR-subtype (P＜0.01),and EGFR expression in ER+/PR-subtype was significantly higher than that in ER+/PR+ subtype (P＜0.01).EGFR protein expression rate was higher in ER-/PR-subtype than in ER-/PR+ subtype,and EGFR protein expression rate was higher in ER-/PR+ subtype than that in ER+/PR+ subtype and ER+/PR-subtype,but all of the difference were not statistically significant (P＞0.05).Conclusion EGFR protein expression is closely related to breast cancer molecular subtyping and negative hormone receptor expression,which is a potential biomarker of anti-breast cancer therapy.

Expression and correlation of Fascin-1 and EGFR in triple-negative breast cancer and non-triple-negative breast cancer / 中华内分泌外科杂志

Objective To explore the expression of Fascin-1 and EGFR in triple-negative breast cancer (TNBC) and non-triple-negative breast cancer (non-TNBC) and its correlation.Methods According to ER,PR,and HER2 status,breast cancer were categorized into 2 subtypes:70 cases of TNBC and 370 cases of non-TNBC.The immunohistochemical technique,EnVision method,was used to evaluate the expression of Fascin-1 and EGFR in breast cancer.Results Expression rate of Fascin-1 and EGFR protein in TNBC was 88.6％(62/70)and 78.6％(55/70),while it was 19.2％(71/370)and 44.3％(164/370)in non-TNBC,respectively.Fascin-1 expression rate was significantly higher in EGFR positive non-TNBC cases (34.8％,57/164) than in EGFR negative cases (6.8％,14/206)(x2=46.032,P=0.000).The positive rate of Fascin-1 protein in EGFR-positive TNBC cases (92.7％,51/55) was higher than that in EGFR negative cases (73.3％,11/15),and the difference had no statistically significance (x2=2.673,P=0.102).Conclusions EGFR signal pathway may positively regulate Fascin-1 expression in non-TNBC.The relationship between EGFR and Fascin-1 in TNBC is needed for further study.

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.

NGX6 gene combined with cisplatin in treatment of lung cancer in vitro and in vivo / 中国生化药物杂志

Objective To evaluate the effect of NGX6 combined with cisplatin on the inhibition rate of A549 cells and NCI-H1975 cells and antitumor effects in vivo.Methods The NGX6 was loaded in the LPD, and prepare Liposome protamine DNA complexes.A549 cells and NCI-H1975 cells were seperately divided into NGX6 group ( 30 μg/mL NGX6 concentration ) , cisplatin group, NGX6 +cisplatin group, PBS as negative control group.The effect of cytotoxicity of four group on A549 cells and NCI-H1975 cell were evaluated by MTT assay.the clone forming rate and the inhibition rate were determined by Cell colony count.lung transplantation tumor model were successfully established, then nude mice were divided into four groups as abeve, each group of 10, tumor size and survival period were determined tumor cell apoptosis were observed.Results The cell viability of A549 cells and NCI-H1975 cells of (NGX6 +cisplatin) were lower than that of NGX6 group, cisplatin group and saline group, respectively(P<0.01).The cloning efficiency of A549 cells and NCI-H1975 cells of ( NGX6 +cisplatin) were lower than that of NGX6 group, cisplatin group and saline group, respectively(P<0.01).The tumor inhibitory rate was in vivo for (NGX6 +cisplatin) was higher than other group(P<0.01).The median survival of nude mice in (NGX6 +cisplatin), NGX6, cisplatin and saline group were 43,31,29 and 15 days.Conclusion NGX6 combination with cisplatin can inhibit the cell proliferate of lung cancer cells and inhibit the tumor growth and the combination of NGX6 and cisplatin may be a potentially effective treatment for lung cancer.

Protective Effects of Osthole on Rats with Focal Cerebral Ischemia_reperfusion Injury / 医药导报

Objective To inVestigate the Potential mechanism and ProtectiVe effects of osthole on rats with focal cerebral ischemia_rePerfusion injury. Methods Middle cerebral artery occlusion was induced by the suture_occluded method. After 2 h of cerebral ischemia and 24 h of rePerfusion,scores of neurological deficits and infarct Volume were eValuated. The leVels of SOD,MDA,GSH and ATPase were also determined. Results Scores of neurological deficits and infarct Volume were lower in the osthole grouPs than in the model grouP. Meanwhile,the actiVity of SOD and GSH content were increased,while the MDA content was decreased in osthole grouPs. Conclusion Osthole exerts ProtectiVe effects on rats with focal cerebral ischemia_rePerfusion injury.

A Non-rigid Medical Image Registration Algorithm Based on Modally Controlled Free Form Deformation / 航天医学与医学工程

Objective To register pre-operative MRI/CT images with intra-operative ultrasound images based on vessels visible in both of the modalities. Method A non-rigid registration method of multimodal medical images based on Free Form Deformation(FFD) was proposed. When the images were aligned, the centerline points of the vessels in one image aligned with the intensity ridge points in the other image. Rigid transformation was adopted in global registration while local deformation was described by a Free Form Deformation based on a modally controlled B-spline. The method applied an optimization strategy combining the genetic algorithm with the conjugated gradients algorithm to minimize the objective function. Result Two experiments were designed on phantom and clinical data to evaluate the method. The results demonstrated that the registration method was consistent accurate. The average standard deviation of the final transformation parameters was sub-voxel, sub-millimeter, and within 0.010 radians. Conclusion The results show that the method has good registration accuracy and convergence rate. It can be applied efficiently in the ultrasound-image-guided surgery system.

A multi-modal image registration method for use in thermotherapy of tumor / 生物医学工程学杂志

In the interactive image-guided thermotherapy, we need the real time image and location of the target tumor. But the current mono-modal imaging technique can not do it. We present a method to register a preoperative 3D MRI volume to a set of intra-operative ultrasound images for the target localization of the liver tumor in the thermotherapy. The registration method is a genetic algorithm based on the features such as liver surface vessels and liver surface.