OBJECTIVEEstablished with amphotericin B perforated patch-clamp technique, to study the electrophysiological properties of calyx synapses.

METHODSIn the present experiments, we studied the application of perforated patch clamp technique on the calyx synapses of mice with Amphotericin B.

RESULTSThe use of Amphotericin B significantly slowed down the decay of channel currents and the optimum concentration was 400 microg/ml.

CONCLUSIONThe syudy developed a stable of perforated patch clamp whole cell recording technique, could be more effecitve, more real reaction neurons electrophysiological characteristics of the channel current. Our work might provide the basic information to future users studying the signal transmission and regulation of auditory system of rodents.

Extracellular matrix(ECM) is the research focus in organize engineering, The configuration?component and mechanics enviroment of ECM is fit for the growth and metastasis of the cell. Heterogeneous ECM is not widely used in clinical treatment for immunocompetence and ethics. This paper introduces the production?organize configuration? immunocompetence and the clinical application of heterogeneous ECM.

Recently, microRNAs (miRNAs) have been shown to be involved in multiple biological pathways that can influence tumor progression and metastasis and they can serve as prognostic biomarkers in many cancers. The present study examined the prognostic significance of miR-215 in cervical cancer. The paraffin-embedded paired cervical scrape samples and tumor tissue samples from 302 patients with stage II cervical cancer were detected for the expression of miR-215 by using qRT-PCR. A miR-215-based classifier was established by using the Cox regression model. The prognostic and predictive accuracy of this classifier was determined in both the internal testing group of 138 patients, and the external independent group of 280 patients. Moreover, cervical cancer HeLa cells overexpressing miR-215 (HeLa-miR-215) were constructed and subcutaneously injected into the nude mice to examine the effect of miR-215 on tumor growth and metastasis in vivo. The results showed that the expression level of miR-215 was significantly higher in cervical cancer tissues than in paired normal tissues (P<0.0001). When patients were classified into high- and low-risk cancer progression groups according to miR-215 level, the 5-year disease-free survival in high- and low-risk groups were 43% (95% CI: 32.1-51.6) and 67% (95% CI: 48.6-77.3) (hazard ratio [HR] 2.02, 95% CI: 1.16-3.52; P=0.013) respectively. Moreover, the expression level of miR-215 was negatively associated with survival rate in patients at TNM stage T3 (HR: 3.317; 95% CI: 1.18-5.14, P=0.017) and TNM stage T4 (HR: 3.48; 95% CI: 1.49-4.45, P=0.008). Tumor volume in nude mice injected with HeLa-miR-215 cells was significantly larger than that in mice injected with control HeLa cells. It was concluded that the expression level of miR-215 is associated with cervical tumor progression and worse survival rate, suggesting that it may serve as a potential prognostic marker to identify patients at higher risk of recurrence.

OBJECTIVE: To evaluate the efficacy of endoscopic minitrephination combined with endoscopic frontal sinusotomy in the management of complex chronic frontal sinusitis. METHOD: Twenty-six patients suffering from chronic frontal sinusitis with complex frontal drainage approach were analyzed. Eleven patients (13 sides) received endoscopic minitrephination combined with endoscopic frontal sinusotomy, while the other 15 patients (18 sides) received endoscopic frontal sinusotomy only. Postoperatively all cases were followed up to evaluate the efficacy. RESULT: The ostia of frontal sinus were successfully opened in the group of patients received endoscopic minitrephination combined with endoscopic frontal sinusotomy without any complications. In the endoscopic frontal sinusotomy only group, three cases of complications were observed, one with the injury of anterior ethmoidal artery and the other two with the injury of papyraceous lamina. After 10 to 24 months of follow up postoperatively, the symptoms were relieved in all cases without recurrence. The combined surgery group with endoscopic minitrephination showed an endoscopic frontal sinus patency rate of 85%, and the endoscopic frontal sinusotomy only group exhibited an endoscopic frontal sinus patency rate of 83%. CONCLUSION Endoscopic minitrephination combined with endoscopic frontal sinusotomy is a simple, convenient, safe and effective method for management of complex chronic frontal sinusitis.
Adult ; Endoscopy ; Female ; Follow-Up Studies ; Frontal Sinus ; surgery ; Humans ; Male ; Middle Aged ; Nose ; surgery ; Retrospective Studies ; Trephining ; methods ; Young Adult

Adenocarcinoma, Clear Cell ; pathology ; Adult ; Female ; Humans ; Thyroid Neoplasms ; pathology

In this study, the rat type 2 diabetes mellitus (T2DM) model was established through tail vein injection with low dose of streptozotocin (STZ) and high fat diet for 8 weeks, and then treated with Jiaotai Pill. The oral glucose tolerance test (OGTT), fasting serum insulin (FINS), free fatty acid(FFA) levels and blood lipid were assayed. HOMA-IR was calculated. Pancreatic pathology was performed. And pancreatic triglyceride (TG) content was examined by the lipid extraction method. Pancreatic islet cell apoptosis were detected by terminal dexynucleotidyl transferase (TdT)-mediated dUTP nick end labeling (TUNEL). According to the results, the model group showed abnormal OGTT, increased FINS, HOMA-IR, FFA, lipid disorder, obvious fat accumulation and significantly increased TG content in pancreatic tissues, and enhanced pancreatic islet cell apoptosis. Compared with the model group, the Jiaotai Pill group displayed improved OGTT, reduced FINS, HOMA-IR, FFA, recovered lipid disorder, decreased fat accumulation and significantly declined TG content in pancreatic tissues, and lowered pancreatic islet cell apoptosis. In summary, Jiaotai pill could effectively treat type 2 diabetes in rats. Its mechanism may be related to the reduction in pancreatic fat accumulation and islet cell apoptosis.
Animals ; Apoptosis ; drug effects ; Diabetes Mellitus, Type 2 ; drug therapy ; metabolism ; physiopathology ; Drugs, Chinese Herbal ; administration & dosage ; Fats ; metabolism ; Glucose Tolerance Test ; Humans ; Islets of Langerhans ; cytology ; drug effects ; Male ; Pancreas ; drug effects ; metabolism ; Rats ; Rats, Wistar

Objective To investigate the feasibility of contrast-enhanced ultrasound-directed nosejujunium tube placement.Methods Twenty-four patients hospitalized in ICU who need support from enteral feeding were collected for this study.Flocare spiral nose-jejunium tube was placed into stomach with guide wire.Real-time ultrasound was used after injection of SonoVue for monitoring the passage of feeding tube from pylorus to duodenum-jejunum segment which was pushed down if without strong resistant force.Finnally,the guide wire was drawed out and enteral feeding was conducted with ascertainment of abdominal X-ray photograph for suitable site in intestinal tract.Results Contrast ultrasound -directed nose-jejunum tube placement procedure was conducted in 24 cases.Twenty-one cases (87.5%) was accomplished successfully,and 3 cases (12.5%) was failed.No special change was observed in the procedure of all patients.Conclusions Contrast ultrasound -directed nose-jejunum tube placement procedure can be regarded as a convenient,safe,and reliable insertion technology,which provide an effective means for early enteral nutrition for critical patients.

Objective To evaluate the usefulness of virtual reality technique in preoperative planning of neurosurgery.Methods Multiple medical imaging data including magnetic resonance imaging,magntic rsonanc angiograph,magnetic resonance venography and computed tomography collected from 26 patients who suffered craniocerebral diseases,were transfered to Dextroscope system.A stereoscopic 3-D object displayed after merging,extracting,dissecting the data with the Radiodexter software in virtual reality environment.A suite of 3-D tools accessible inside the Dextroscope workspace enabled users to obtain measurement and simu- lated intraoperative viewpoint about the lesion and adjacent anatomic structure.A preoperative plan was de- fined and compared with real operation.Results 3-D stereoscopic virtual reality images of 26 cases were re- constructed successfully,and of coincidence with real situation in operations.Conclusion VR technique in Dextroscope system can integrat multiple medical imaging data quickly,intuitively and overall,offer a compre- hensive information about the lesions and related local anatomy,give a hand to optimizing the operative project and might be possible potentially to increase the safety of operation and the resecting rate of the lesion.

In this study,we aimed to study the pattern visual evoked potentials (P-VEPs) in two eyes with varying visual acuity in one eye and to provide an objective estimation of visual acuity by comparing P-VEPs in one and two eyes.Thirty subjects were chosen,who had one eye with an acuity of 5.0,4.85,4.6,4.0,or scieropia and obstructed vision and the other eye with an acuity of 5.0,respectively.P-VEPs were detected under the large grating stimuli at 3×4 spatial frequency,moderate grating stimuli (12× 16 spatial frequency) and small grating stimuli (48×64 spatial frequency).Under large grating stimuli,there was no significant difference in P100 peak latency between the groups,nor was there a significant difference between the amplitude of two eyes and the amplitude of one normal-vision eye.Under moderate and small grating stimuli,there was a significant difference in P100 peak latency between the group with both eyes having an acuity of 5.0 and the group with visual acuity below 4.0 in one eye.There was a significant difference in P100 amplitude between the group with visual acuity of 5.0 in both eyes and the group with one normal-vision eye.There was no significant difference in the amplitude of two eyes and the amplitude of one normal-vision eye between any other two groups.In forensic identification,characteristics and variability of P-VEPs in one and two eyes can be used to identify malingering or decline in visual acuity.

The clinical data of one case of infantile myofibromatosis of left mandibular angle were analyzed, and the clinicopathological characteristics, imaging diagnosis, treatment and prognosis of infantile myofibromatosis were discussed.
Humans ; Myofibromatosis ; congenital