Aged ; Diagnosis, Differential ; Gastrectomy ; methods ; Gastrointestinal Stromal Tumors ; metabolism ; pathology ; Humans ; Lipoma ; pathology ; Liposarcoma ; metabolism ; pathology ; surgery ; Male ; S100 Proteins ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Objective To investigate the effects and mechanisms of selective angiotensinⅡtype 1 receptor antagonist ZD7155 on the inhibition of pancreatic cancer in vitro.Methods MTT assays were used to determine the inhibition of pancreatic cancer cell line PaTu8988s by ZD7155 in different concen- trations and at different time.PaTu8988s cell cycle and cell apoptosis were detected by flow cytometry. Transmission electron microscope was used to investigate the apoptosis of PaTu8988s before and after the incubation with ZD7155 under different concentrations.PaTu8988s cell morphology was observed be- fore and after the incubation with ZD7155.Results MTT showed that the increase of inhibition of pan- creatic cancer cell by ZD7155 was in agreement with the increase of the concentrations of ZD7155 and the time of the incubation with ZD7155.The inhibition rates of PaTu8988s cells were 9%,18%,30%, 51%,60% and 78% by ZD7155 with the concentrations of 5?10~(-11),5?10~(-10),5?10~(-9),5?10~(-8),5?10~(-7) and 5?10~(-6) mol/L,respectively.The inhibition rates of PaTu8988s cells were 15%,25%, 36%,51%,67% and 85% by ZD7155 with the same concentration(5.0?10~(-8) mol/L)at 12,24,36, 48,60 and 72 hours,respectively.ZD7155 could also inhibit PaTu8988s cell cycle significantly and was dose-dependent.Cell electron microscopy showed that there were chromatin margination and apoptotic body in the cell nucleus when the cells were incubated with ZD7155,and these changes were increase with the concentrations of ZD7155.The morphology of PaTu8988s cell didn't have any change after in- cubation with ZD7155.Conclusions ZD7155 can inhibit the growth of pancreatic cancer cells in vitro by suppressing the S-phase of cell cycle and induce cell apoptosis without visible cell toxic effects.

Objective:To investigate the inhibitory effect of selective angiotensinⅡtype 1 receptor antagonist ZD7155 on pancreatic cancer xenografts of nude mice.Methods:Sixty nude mice were given subcutaneous injections of PaTu8988s cells to establish the pancreatic cancer xenograft models;then the animal models were evenly randomized into 3 groups:low-dose (10 mg?kg~(-1)?d~(-1))ZD7155,high-dose(20 mg?kg~(-1)?d~(-1))ZD7155 and normal saline groups.Ten mice in each group were sacrificed 10 d after treatment and the tumor sizes and body weights were measured.The microvessel density(MVD)was assessed by immunostaining of endothelial cells for CD31 and the cell apoptoses were observed by transmission electron microscope.Another thirty mice were treated for 30 days;the survival period of mice and toxicity of ZD7155 were observed till the 49th day of treatment.Results:Ten days after treatment,the mean tumor volumes in the control,low-dose and high-dose groups were(35.8?6.7)cm~3,(21.5?6.1)cm~3 and (10.7?4.1)cm~3,respectively(P

Objective To establish a stable cell line secreting human IgE Cε2-4 protein, and in-vestigate the binding capacity of receptor FcεR Ⅰ Methods The E24 gene was derived from SKO-O07 cell line, and was then cloned into pcDNA3.1 (+) (signal peptides were synthesized and fused at the 5'-end of E24 gene) or pCMV-L vector. After transient transfection into 293T cell, the secreted F24 protein was ana-lyzed by sandwich ELISA. The best vector was chosen to be transfected into CHO cells with LipofectAMI-NETM 2000 reagent. After being selected by G418 and subcloned three times by limited-dilution method, two stable cell lines were established. E24 gene was amplified by RT-PCR, and the E24 protein in the superna-tant was identified by ELISA. Besides, the binding capacity of FceR ⅠⅡ was analyzed by flow cytometry method. Results Three mammalian expression vector SP-E24-F3. 1, SP lI-E24-P3.1 and E24-PL were constructed and transient transfected to 293T cells. The output of E24 protein in the supernatant were 19.1, 19.4 and 8.7 μg/ml, respectively. Then the vector SP IX-E24-P3.1 was transfected into CHO cells. Final-ly, two single clones secreting E24 protein were stably obtained. The output of E24 were all at least 25 μg/ml. RT-PCR could detect the E24 gene from one of the two clones. Furthermore, flow cytometry results showed that E24 could bind the receptor in a dose-dependent manner. Conclusion Two stable cell line se- creting E24 protein were obtained, while E24 could specifically bind FcεR Ⅰ.

OBJECTIVETo compare therapeutic effects of clavicular hook-plate fixation and modified Weaver-Dunn surgery combined with clavicular hook-plate fixation in treating Tossy type III acromioclavicular joint dislocation.

METHODSForty-one patients with Tossy type III acromioclavicular dislocation treated by operation were retrospectively analysis from January 2012 to January 2014. The patients were divided into clavicular hook-plate fixation group (group A) and modified Weaver-Dunn surgery combined with clavicular hook-plate fixation (group B) according to surgical procedures. In group A, there were 15 males and 6 females aged from 17 to 51 years old with an average of (31.60 ± 12.58) years old, preoperative Constant-Murley score was 40.25 ± 9.80, and treated with clavicular hook-plate fixation. In group B, there were 13 males and 7 females aged from 18 to 48 years old with an average of (29.40 ± 11.27) years old, preoperative Constant-Murley score was 41.45 ± 8.81, and treated with modified Weaver-Dunn surgery combined with clavicular hook-plate fixation. Operative time, blood loss, imaging changes before and after operation, postoperative complications were compared; Constant-Murley score at 3, 6 and 12 months after operation were evaluated.

RESULTSIn group A, operative time was 40.50 ± 24.36) min, blood loss was (75.30 ± 30.36) ml; In group B, operative time was (60.10 ± 23.55) min, blood loss was (100.70 ± 40.12) ml. Twenty-one patients in group A were followed-up from 12 to 18 months with an average of (14.8 ± 3.1) months; 20 patients in group B were followed-up from 12 to 14 months with an average of (13.6 ± 1.5) months. There were no significant differences in operative time, blood loss and follow-up time between two groups. Complications were in six patients of group A and 3 patients of group B, and there were no significant meaning between two groups. At 6 months after operation, Constant-Murley score in group A was 88.85 ± 4.23, 92.15 ± 3.82 in group B; and had significant meaning between two groups (t = -2.56, P = 0.022 < 0.05). While there were no differences in Constant-Murley score in other times.

CONCLUSIONBoth of clavicular hook-plate fixation and modified Weaver-Dunn surgery combined with clavicular hook-plate fixation are effective operative methods for the treatment of Tossy type III acromioclavicular dislocation. Clavicular hook-plate fixation has advantage of less trauma, while modified Weaver-Dunn surgery combined with clavicular hook-plate fixation could reconstruct coracoclavicular ligament more stronger, clavicular hook plate could take out earlier, also improve shoulder joint function earlier.

Acromioclavicular Joint ; injuries ; Adolescent ; Adult ; Bone Plates ; Case-Control Studies ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Shoulder Dislocation ; surgery

Objective To investigate the vascular effect of hydroxyl-safflor yellow A(HSYA) on rat thoracic aorta and its underlying mechanism. Methods The tension of isolated thoracic aorta rings of rats perfused with different concentrations of HSYA(1?10-6-1?10-4 mol/L) was measured using organ bath technique.The effects of HSYA on the vasocontraction induced by cumulative phenylephrine(PE)(1?10-6-1?10-4 mol/L),KCl(6?10-2 mol/L) and CaCl2(1?10-5-3?10-3 mol/L) were recorded respectively. Results HSYAcaused a concentration-dependent anti-contraction effects by KCl or PE in endothelium-intact and endothelium-denuded aortic rings.HSYA inhibited the CaCl2-induced contraction and downward shifted concentration-response curve of aortic rings.HSYA+HP resulted in more significant anti-contraction effect than single use of HSYA(P0.05).There were significant differences in anti-contraction effect between HSYA+RR and RR or HSYA(P

Objective To explore the mechanism by which the anti-human P185erbB2 scFv-Fc-IL-2(HFI)modulates tumor surface molecules and activates immune effector cells in vitro. MethodsMTT assay was used to test the proliferation and the LAK-like cytotoxicity. Flow cytometry assay was used to test the expression of ICAM-1, Fas and erbB2 receptors in tumor cells and the expression levels of CD molecules FasL and LFA-1 in human PBMC. Antibody-dependent cell-mediated cytotoxicity(ADCC)mediated by HFI against SKOV3, MCF-7 and SGC-7901 tumor cells was explored hv LDH release assay. Results The expression levels of ICAM-1 and Fas on SKOV3 cell treated with HFI were upregulated, from 24.85％ and 0.53％ to 85.36％ and 59.19％ respectively, while the expression levels of erbB2 on SKOV3, MCF-7 and SGC-7901 tumor cells treated with HFI were downregulated, from 98.48％, 42.60％ and 36.66％ to 94.01％,30.95％ and 12.36％ respectively. HFI could significantly enhance the proliferation activity of human PBMC, and CD3+ CD8+ T cells and CD3- CD16+ CD56+ NK cells were elevated, from 24.37％ and 6.90％ to 38.80％ and 13.45％ respectively. The expression levels of CD25, LFA-1 and FasL were significantly enhanced from 3.99％, 86.52％ and 5.02％ to 12.96％, 99.06％ and 16.19％. The LAK-like cytotoxicity of human PBMC treated with HFI against SKOV3, MCF-7,SGC-7901 tumor cells was significantly improved:HFI was effective in mediating ADCC against SKOV3,MCF-7 and SGC-7901 tumor cells which expressed high,medium and low levels of erbB2,respectively,and HFI-induced ADCC was correlated with the degrees of erbB2 expression on the tumor cells. Conclusion The expression levels of ICAM-1 and Fas on SKOV3 cell treated with HFI are significantly upregulated. The expression levels of erbB2 on SKOV3, MCF-7 and SGC-7901 tumor cells treated with HFI are downregulated. HFI can significantly enhance the proliferation activity of human PBMC. The LAK-like eytotoxicity of human PBMC treated with HFI against tumor cells is significantly enhanced. HFI iS effective in mediating ADCC and the activity of HFI-induced ADCC is correlated with the degrees of erbB2 expression on the tumor cells.

OBJECTIVETo investigate the therapeutic effect of soft tissue expansion combined with follicular unit extraction( FUE) for burn cicatricial bald.

METHODS48 patients with burn cicatricial bald (> 25 cm2) were treated in three stages. The expanders were implanted on the first stage. After expansion for 8 weeks, the expanders were taken out and local flaps were transferred. One year later, follicular unit extraction( FUE) was applied on the bald area.

RESULTS48 cases were followed up for 5 years with satisfactory cosmetic results. The VAS assessment of satisfaction on hair appearance after three-staged surgery was 8.2 ± 2.1.

CONCLUSIONSSoft tissue expansion combined with FUE has a reliable effect for burn cicatricial bald.

Alopecia ; etiology ; surgery ; Burns ; complications ; surgery ; Female ; Hair ; transplantation ; Hair Follicle ; transplantation ; Humans ; Male ; Surgical Flaps ; transplantation ; Tissue Expansion ; methods ; Tissue Expansion Devices

Objective To search a new,safe and effective method to obtain semen using rectal Drobe electroejaculation(RPE).Methods RPE procedures were performed in 8 men with psychological ejaculatory failure,used the electrical stimulate instrument(CGS model,made in Italy).The average age was 26 years.Seminal vesicle was normal by B Uhrasonography or CT examination.Except for 1 case of diabetes,the other 7 cases found no hormones,blood,biochemical and nervous system abnormalities.Three cases had nocturnal emission,but no sexual intercourse ejaculation.Results Adequate sperm was successfully taken out from the 8 patients.Mean seminal fluid volume was 2.3 ml,mean total sperm count was 67×106/ml and mean total motile sperm was 21.3%.Three patients felt abdominal distension during the RPE course.Conclusion RPE is a safe,reliable,non-in-vasive,repeatable method to obtain semen.

Objective To reproduce an SD rat model of prostatic calculus by using nanobacteria (NB), and explore the role of NB in contributing to prostatitis and prostatic calculus. Methods Twenty adult male SD rats were randomized to the control group and 20 to the model group. Rat prostate infection models were reproduced by infusing 0. 2 ml (Concentration, 1 Mai unit) NB suspension transurethrally. 0.2 ml physiological saline was infused transurethrally in the rat control group. The rats were sacrificed 4 and 8 weeks later and prostatic pathology were viewed by hematoxylin and eosin (HE) staining. Lithogenesis was observed by scanning electron microscope (SEM) or Transmission electron microscopy (TEM). Re-isolation, culture and identification of nanobacteria were also done in rat prostatic tissues. Results Chronic inflammatory changes of prostates were shown in the model group at both 4 weeks and 8 weeks after infusing NB suspension. Prostatic calculi were detected by SEM and TEM at 8 weeks in the prostates of the rat model group (7/10). Neither chronic inflammatory changes nor prostatic calculus was found in the control group. NB was positive in the model group, but negative in the control group. Conclusions NB infection could cause chronic prostatitis and prostatic calculus in rats.