Hydroxyapatite has already been considered as an excellent medical biomaterial.and nanometer hydroxyapatite possesses special characteristics.Hydroxyapatite nanoparticles can inhibit the growth of a wide range of cancer cells.but have no effect on normal cells.thus it has a better selectivity in the treatment of cancer.The anti-tumor mechanism of nano-hydroxyapatite is relevant on the following factors:role in the cell membrane,affecting DNA synthesis,inducing cell cycle blockage and apoptosis,impacting the activity of telomerase.This study is designed to introduce the specific structure and characterjstics of nano-hydroxyapatite,analyze the research progress of nano-hydroxyapatite in tumor field.and discuss the possibility of nano-hydroxyapatite as a new anti-cancer drug in clinical application.

Endostatin(ES), the C-terminal fragment of collagen XVIII, is a potent angiogenesis inhibitor. At present, there are a large number of research papers on ES. It has already been on clinical stage Ⅱ and been widely used in inhibition of neovascularization(NV). However, how to improve the bioactivity of ES is still a matter of ongoing discussion. The objective of this review is to elucidate the relationship between the modified ES and ocular neovascualrization, and to discuss the superiority based on the structure modification. The structure can be changed either by covalent modification or by genetical mutation. It is proposed that the secondary structral ES enhance the anti-angiogenic activity. Studies on modified ES also shed light on our understanding of the molecular action mechanisms of ES. Modified ES may be exploited as a new angiogenesis inhibitor for therapeutic applica-tions, in substitution of the native ES. Activity

Animals ; Carnitine ; pharmacology ; H(+)-K(+)-Exchanging ATPase ; metabolism ; Mitochondria, Muscle ; enzymology ; Muscle, Skeletal ; drug effects ; Physical Conditioning, Animal ; Rats

Child ; Hemangioma ; Humans ; Intestine, Small ; Male

Objective:To analyze the improvement effect of smart drugs shelves on the service process in the outpatient pharmacy and to provide supporting data for the new service process. Methods:The dispensing time of pharmacists and the waiting time of pa-tients were studied and compared before and after the use of smart drugs shelves. Results: After the use of smart drugs shelves, 71. 52% of dispensing time was in 5min, and more than 95% was in 10min. In the 9 periods, the medians of patient waiting time on Oct 21, 2013 were all shorter than those on Oct 18, 2010. Conclusion:The use of smart drugs shelves can improve service efficiency, shorten patient waiting time and enhance service level of outpatient pharmacy.

Acupuncture Points ; Bloodletting ; instrumentation ; methods ; Humans

Objective Yangqing Chenfei Formula - To investigate the effect of (YCF) on epithelial mesenchymal transition (EMT) Methods in lung tissues of silicosis model rats. Specific pathogen free adult male SD rats were randomly divided into control group, model group, tetrandrine group and YCF group, with eight rats in each group. The rats in the model group, tetrandrine group and YCF group were intratracheally injected with 1.00 mL of silica suspension with a mass concentration of 50.0 g/L, and the rats in the control group were given an equal volume of 0.9% sodium chloride solution. On the 15th day after modeling, the tetrandrine group was given tetrandrine at a dose of 27.0 mg/kg body weight, the YCF group was given YCF with a dose of 8.91 g/kg body weight, while both the control group and model group were given 2.00 mL 0.9% sodium chloride solution. Gavage wasperformed twice a day in the morning and evening for 14 days. On day 29 of the experiment, after evaluating the tidal volume, - functional residual volume (FRC) and vital capacity of rats in each group, lung tissues were collected, and hematoxylin eosin staining and Masson staining were performed to examine the histopathological changes, and the fibrosis score was evaluated. - - Hydroxyproline level was detected by colorimetry. The expression of type Ⅰ collagen (COL Ⅰ), type Ⅲ collagen (COL Ⅲ), - - - - - - E cadherin (E Cad), N cadherin (N Cad) and α smooth muscle actin (α SMA) protein was detected by immunohistochemistry. - The expression of epithelial cell adhesion molecule (EpCAM) and fibroblast specific protein 1 (FSP 1) was detected by Results immunofluorescence. The lung structure was intact and the alveolar structure was normal in the control group. The alveolar structure was destroyed, the alveolar wall was thickened, and cellular nodules were observed/n the model group. The lung tissue lesions of rats in the tetrandrine group and YCF group were reduced compared with that in the model group, and there was no difference in the degree of lesions between the two groups. The tidal volume, FRC and vital capacity of rats in model P< - P< group decreased (all 0.05), the relative expression of E Cad protein in lung tissue decreased ( 0.05), the fibrosis score and - - - - the level of hydroxyproline, the protein relative expression of COL Ⅰ, COL Ⅲ, N Cad and α SMA in lung tissue increased (all P< - 0.05), while the fluorescence intensity of EpCAM protein decreased, and that of FSP 1 protein increased compared with the P< control group. The tidal volume, FRC and vital capacity of rats in tetrandrine and YCF groups increased (all 0.05), the fibrosis - - - score and the level of hydroxyproline, the protein relative expression of COL Ⅰ, N Cad and α SMA in lung tissue decreased (all P< - P< 0.05), the relative expression of E Cad protein in lung tissues increased ( 0.05), while the EpCAM protein fluorescence - intensity increased and FSP 1 protein fluorescence intensity decreased compared with the model group. The relative expression - P< Conclusion of N Cad protein in lung tissues of YCF group was lower than that of the tetrandrine group ( 0.05). YCF can - improve the lung function, alleviate collagen deposition in lung tissues, and inhibit the epithelial mesenchymal transition in silicosis model rats, and then attenuates the progression of silicotic fibrosis.

OBJECTIVE: To investigate the pathological features and significance of myocardial contraction band necrosis in sudden cardiac death. METHODS: Using HE and PTAH staining, the distribution sites and pathological features of myocardial contraction band necrosis were observed. The data were analyzed according to the extent of necrosis. RESULTS: The locations, pathological features and the extent of necrosis were similar in different sudden death cases. The locations were related with sites of myocardial damage. The papillary muscles of left ventricular were most occurred, followed by the anterior wall of left ventricular. In the sudden death cases caused by stress cardiomyopathy, the extent of myocardial contraction band necrosis was lighter than the others. Most cases were predominantly level 1, the others were level 2. CONCLUSION Used as the diagnosis basis of acute myocardial ischemia, the myocardial contraction band necrosis has important significance to determination of death.
Adult ; Aged ; Aged, 80 and over ; Coronary Disease/complications* ; Death, Sudden/etiology* ; Death, Sudden, Cardiac/pathology* ; Female ; Heart Diseases/pathology* ; Humans ; Male ; Middle Aged ; Myocardial Contraction/physiology* ; Myocardium/pathology* ; Necrosis

Objective To evaluate the use of spiral enteroscopy in diagnosis and treatment of smallbowel diseases.Methods The data of 8 patients who underwent spiral enteroscopy from July to September 2009 were retrospectively studied.The variables including maximal insertion depth,total procedure time,complications,and outcome were evaluated.Results The average maximal depth of intubation was 2.2 m beyond the Ligament of Triez (0-3.6 m beyond Ligament of Triez),with a mean procedure time at 41 min (25 to 77 min).Small bowel Crohn's disease was diagnosed in 2 cases with biopsy suggesting active inflammation and granular formation.Small intestinal tumor was detected in 1 patient with pathological finding of high grade dysplasia.Jejunal ulcer was detected in 1 patient.Multiple polyps were found in 1 patient after jejunal anastomosis,which were then treated with endoscopic argon plasma coagulation (APC).No abnormalities were found in 3 other patients.No complications occurred during and after the procedure.The maneuver of spiral enteroscopy and APC were same as that of balloon enteroscopy.Conclusion Spiral enteroscopy is simple and convenient to operate,which is of great potential in clinical use.

In surgery operations, wound should be cleaned with warm sterilized saline solution. In order to reach rapidly warming the washing solution from the room temperature during the surgery, we designed a thermostatic medical infusion pump. The present paper mainly presents researches on the two temperature control methods in the standby mode and in the flushing mode of the system. In the standby mode, the traditional proportional-integral-derivative (PID) control algorithm was adopted. In the flushing mode, dynamic characteristics of the system was changed in real time, which made the thermostatic control process more complex, and the fitted control function combined with the PID control algorithm was adopted in this mode. The temperature control parameters were adjusted in real time according to the initial temperature and the flow rate of the washing solution to obtain a constant temperature of the washing solution, no matter how the initial temperature and the flow rate are changed. The experiment results showed that this kind of control system performed well with a high accuracy.
Algorithms ; Equipment Design ; Infusion Pumps ; Sodium Chloride ; Solutions ; Temperature