Objective To study the effects of different types of ankle brace on human body static postural stability.Method Ten male subjects with unilateral functional ankle instability (FAI)were enrolled in the study.The FlexiForce pressure control system was used to control the pressure on the ankles when wearing the soft brace.The static postural stability without braces as well as with soft and semi-rigid braces was measured using WIN-POD system.Results (1)In eye-open testing,no significant difference was found in indexes of COP sway between wearing or not wearing braces (P＞0.05).Compared with wearing semi-rigid brace,significant increase was observed in the average X dev when wearing soft braces (P＜0.05).(2)In eye-close testing,no significant differences were found in COP sway either wearing braces or not,as well as wearing different braces.Conclusion Wearing soft and semi-rigid brace had no effects on the static postural stability of FAI patients.But the static balance ability of wearing semi-rigid braces is better than that of wearing soft braces.

Based on a survey of community health service organization in several cities, community health service model based on the family clinic was compared with state-owned community health service model, and status quo, advantages and problems of family community health service organization were analyzed. Furthermore, policies for the management of community health service organization based on the family clinic were put forward.
China ; Community Health Services/*methods ; Community Health Services/*organization & administration ; Data Collection ; Delivery of Health Care/organization & administration ; Hospitals, Community/*organization & administration

Neuron is the basic unit of the biological neural system. The Hodgkin-Huxley (HH) model is one of the most realistic neuron models on the electrophysiological characteristic description of neuron. Hardware implementation of neuron could provide new research ideas to clinical treatment of spinal cord injury, bionics and artificial intelligence. Based on the HH model neuron and the DSP Builder technology, in the present study, a single HH model neuron hardware implementation was completed in Field Programmable Gate Array (FPGA). The neuron implemented in FPGA was stimulated by different types of current, the action potential response characteristics were analyzed, and the correlation coefficient between numerical simulation result and hardware implementation result were calculated. The results showed that neuronal action potential response of FPGA was highly consistent with numerical simulation result. This work lays the foundation for hardware implementation of neural network.
Action Potentials ; Computer Simulation ; Humans ; Models, Neurological ; Neural Networks (Computer) ; Neurons ; cytology ; Synaptic Transmission

BACKGROUND:Pancreatic stelate cels transforming growth factor β1/Smads signaling pathway activation is probably a main molecular mechanism of pancreatic fibrosis. If this pathway can be blocked, the progression of fibrosis of tissues with chronic pancreatitis wil be inhibited. OBJECTIVE:To study the inhibitory effect of colchicine on transforming growth factor β1/Smads pathway in chronic pancreatitis rat models. METHODS:Healthy male Sprague-Dawley rats were randomly divided into colchicines-treated group and chronic pancreatitis group. After successful establishment of rat models of chronic pancreatitis, the rats in the colchicines-treated group were intraperitonealy injected with colchicine 150 μg/kg daily. The rats in the chronic pancreatitis group were intraperitonealy injected with equal volume of physiological saline daily. Pancreatic tissues were colected after 3 months. Hematoxylin-eosin staining was used to observe histopathological changes of pancreatic tissue. Immunohistochemical staining was used to detect the expressions of transforming growth factor β1 in pancreatic tissue. Western blot assay was utilized to detect the expressions of P-Smad2, P-Smad3 and α-SMA protein in pancreatic stelate cels. RESULTS AND CONCLUSION: Hematoxylin-eosin staining results revealed that compared with the colchicines-treated group, glandular tissue had reduced, while fibrous connective tissue and inflammatory cels had increased obviously and replaced the pancreatic gland tissue in the chronic pancreatitis group. Immunohistochemical staining results demonstrated that the expression levels of transforming growth factor β1 and the index of positive cels were significantly lower in the colchicines-treated group than those in the chronic pancreatitis group (P < 0.05). Western blot assay results revealed that the results of P-Smad2/β-actin, P-Smad3/β-actin andα-SMA/β-actin in pancreatic stelate cels were significantly lower in the chronic pancreatitis group than those in the colchicines-treated group (P < 0.05). Results suggested that colchicine could inhibit the activity of transforming growth factor β1/Smads pathway and pancreatic tissue fibrosis in chronic pancreatitis rats. Therefore, colchicine can be used as a new candidate therapeutic scheme for chronic pancreatitis fibrosis.

AIM: To observe the effect of microRNA-16 (miR-16) on the megakaryocytic differentiation of K562 cells, and to explore the potential mechanism.METHODS:miR-16 was over-expressed or silenced by transfection with miR-16 mimics or inhibitor in K562 cells.The level of miR-16 was detected by real-time PCR.The expression of CD41, CD42b and CD61, as megakaryocytic differentiation markers, was detected by flow cytometry.The effect of miR-16 on the expression of myeloblastosis oncogene ( MYB) was measured by Western blotting, and flow cytometry was performed to confirm whether the effect of miR-16 on expression of CD41, CD42b and CD61 was mediated by MYB.RESULTS:Transfection with miR-16 mimics dramatically elevated the level of miR-16 and the expression of CD41, CD42b and CD61 in the K562 cells.Transfection with miR-16 inhibitor decreased the level of miR-16 and the expression of CD41, CD42b and CD61 in the K562 cells (P<0.05).The expression of MYB was regulated by miR-16, and MYB silencing reversed the regulation of CD41, CD42b and CD61 induced by miR-16.CONCLUSION:miR-16 regulates the megakaryocytic dif-ferentiation of K562 cells by targeting MYB.

OBJECTIVE:To establish a method for content determination of cyproheptadine hydrochloride in fuyan cream.METHODS:Ultraviolet spectophotometry was applied to determine the contents of cyprohepatadine hydrochloride as well as its adjuvant as two coexisting components without isolation and extraction,the wavelengths were286nm and258nm res_ pectively,linear regression and simultaneous equations were used to analyze the results.RESULTS:Cyproheptadine hydrochlor_ ide and its adjuvant showed good linear relationship in the range of2.52～25.2and2.5022～25.022?g/ml respectively,the average recovery of cyproheptadine hydrochloride was98.61%(RSD=1.08%).CONCLUSION:The present method is simple,convenient,reproducible and reliable,which is suitable for rapid determination for fuyan cream.

OBJECTIVE To investigate vascular endothelial growth factor-C (VEGF-C) and cyclooxyegense-2(COX-2) expression in nasopharyngeal carcinoma. METHODS The expression of COX-2 and VEGF-C were stained respectively in nasopharyngeal carcinoma tissues of 45 patients using immunohistochemical method,and were analyzed with clinical data. RESULTS The positive expression rates of COX-2 and VEGF-C were 68.9 % and 53.3 % respectively in nasopharyngeal carcinoma tissue. The expression of COX-2 was positively correlated with VEGF-C (r=0.334,P

Smad3 is a major transporter in the transforming growth factor β (TGF-β) signaling pathway.It is in charge of the transfer of TGF-β signal from the surface of the cell membrane into the nucleus.The TGF-β signal can be bound to the target gene in the nucleus and regulate its expression.Abnormalities in Smad3 expression level and functional status will lead to abnormal signal transduction,involving cell growth,proliferation,development,differentiation,migration,apoptosis and other basic life activities.This review focused on the differential expression of Smad3 in hepatocellular carcinoma (HCC)and the adjacent tissue.The character of Smad3 in HCC is outlined in three parts:Smad3 upstream signaling source,Smad3 self-assembly maturation and Smad3 downstream effects,which may provide a summary and reference for the follow-up study on Smad3.

Based on a survey of community health service organization in several cities, community health service model based on the family clinic was compared with state-owned community health service model, and status quo, advantages and problems of family community health service organization were analyzed. Furthermore, policies for the management of community health service organization based on the family clinic were put forward.
China ; Community Health Services ; methods ; organization & administration ; Data Collection ; Delivery of Health Care ; organization & administration ; Hospitals, Community ; organization & administration ; Humans

Objective To observe the changes of cardiac rhythms in a swine model of adult asphyxia! cardiac arrest. Method Sixteen Pigs were aphyxiated by endotracheal tube clamping until 8 min after loss of aortic pulsations. Resuscitation was then provided and swinds were assigned to received 0.045 mg/kg epinephrine intravenously after 3 min of basic life support. The animals with restoration of spontaneous circulation within 20 min from CPR were defined as successfully resuscitated, while the rest were identified as unresuscitation. Electrocardiogram ( EGG) were monitored from the start of asphyxia to the start of the CPR. Results When loss of pulsations occurred, 2 of 16 animals had ventricular fibrillation; 10 pigs exhibited pulseless electrical activity, and 4 pigs had asystole. During the 8 min after the loss of aortic pulsations, pulseless electrical activity converted to VF in 7 pigs. Immidiatedly prior to resuscitation, VF occurred in 9 pigs, asystole in 4 pigs, and PEA in 3 pigs. Conclusions Most of animals in this swine model of asphyxial cardiac arrest presented PEA, but most of them converted to VF especially late in the asphyxial process.