This article elaborated the connotation and characteristics of research-oriented hospital as well as its inner connection with the development of key disciplines , based on the system dynamics model data analysis of the National TCM Clinical Research Base . It gave suggestions in increasing discipline input , strengthening personnel training , and improving achievement output to research-oriented hospital construction in order to promote the construction of research-oriented hospitals .

This article took the research work of 16 national clinical research base construction units as its background in order to dig the connotation of health service efficiency . Through data envelopment analysis , a comprehensive exposition was given on the inputs and outputs relation of medical and health service efficiency in order to propose appropriate policy recommendations. The study was guided by the scientific development concept in order to gradually improve the efficiency of health services and achieve a comprehensive , coordinat-ed and sustainable development of the hospital .

BACKGROUND:Foreign injectable sulphate calcium has good biocompatibility, injectability and in situimmobilization, moulding based on adaptation to the shape of bone defects, but the price is expensive. OBJECTIVE:To explore the optimal fabricating parameters of bone repair materials with α-calciumsulfate hemihydrates as the main component, and to study the performance and characterization METHODS:α-Calciumsulfate hemihydrates powder was mixed with sodium hyaluronate at liquid-solid-ratios of 0.2, 0.25, 0.3, 0.35, 0.4 mL/g using vapor-heat method to prepare injectable bone materials. Performance, setting time and compressive strength of the injectable bone was detected. The best liquid-solid-ratio was 0.3 mL/g.α-Calcium sulfate hemihydrates powder was mixed with calcium sulfate dihydrate powder (1%, 2%, 3% mass fractionas) to fabricate injectable bone materials. Performance, setting time and compressive strength of the injectable bone was also detected; meanwhile, the biosafety of the injectable bone was determined. Theinjectable bone material that was made at the liquid-solid-ratio of 0.3 mL/g and by 2% calcium sulfate dihydrate was implanted into Ba-ma swine models of thoracic bone defects. At the time points of 8, 16 and 24 weeks after implantation, histological observation was done. RESULTS AND CONCLUSION: The injectable bone material was made at the liquid-solid-ratio of 0.3 mL/g and by 2% calcium sulfate dihydrate. The initial and final setting time was 4.0-5.0 minutes and 8.0-9.0 minutes, respectively. The compressive strength of the injectable bone reached (8.93±0.23) MPa. These findings indicate that the injectable boen material has good performance, initial setting time and compressive strength meeting the requirements of clinical application and good biosafety. Animal experiments show that the injectable bone can provide space for new bone in creeping substitution way by auto-degradation, with osteogenic activity.

OBJECTIVETo explore the clinical effect of plantar medial perforator artery based reverse island medial dorsal pedal neurocutaneous vascular flaps.

METHODS12 cases with soft tissue defects of forefeet were treated by plantar medial perforator artery based reverse island medial dorsal pedal neurocutaneous vascular flaps. The flap size ranged from 3.0 cm x 3.5 cm to 5.5 cm x 8.5 cm.

RESULTAll flaps survived completely. The patients were followed up for 6 - 24 months. The texture and flexibility of the flaps were normal with no ulcer. The sensation improved with the two-point discrimination of 7 - 10 mm. The cosmetic and functional results were satisfactory. The wounds at donor site healed primarily.

CONCLUSIONSThe flaps have expanded size for large defects with good flexibility, thickness and texture. It is easily performed with less morbidity to main artery.

Adult ; Female ; Foot Injuries ; surgery ; Humans ; Male ; Middle Aged ; Skin Transplantation ; Soft Tissue Injuries ; surgery ; Surgical Flaps ; blood supply ; innervation ; Tibial Arteries ; surgery ; Young Adult

The primary object of this fundamental research was to survey the synergistic cardiovascular effects of iptakalim, a novel ATP-sensitive potassium channel (K(ATP)) opener, and clinical first-line antihypertensive drugs, such as calcium antagonists, thiazide diuretics and β receptor blockers by a 2 x 2 factorial-design experiment. It would provide a theoretical basis for the development of new combined antihypertensive therapy program after iptakalim is applied to the clinic. Amlodipine besylate, hydrochlorothiazide and propranolol were chosen as clinical first-line antihypertensive drugs. Blood pressure, heart rate (HR) and cardiac functions were observed in anesthetized normal rats by an eight-channel physiological recorder. The results showed that iptakalim monotherapy in a low dose could produce significant antihypertensive effect. There was no interaction between iptakalim and amlodipine on the maximal changes of systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial blood pressure (MABP), the left ventricular systolic pressure (LVSP), and the left ventricular end-diastolic pressure (LVEDP) (P > 0.05). However, the effects of combination iptakalim/amlodipine on the maximal changes of SBP, DBP, MABP, LVSP and LVEDP were more obvious than those of iptakalim or amlodipine monotherapy. And there was strong positive interaction between iptakalim and amlodipine on the maximal changes of HR (P>0.05). According to the maximal changes of DBP, MABP, LVSP and LVEDP (P < 0.05) of combination iptakalim with hydrochlorothiazide, there was strong positive interaction between them. But there was no interaction between iptakalim and hydrochlorothiazide on the maximal drop of SBP and HR (P > 0.05). According to the maximal drops of DBP, MABP of combination iptakalim with propranolol, there was strong positive interaction between them (P < 0.05). But there was no interaction between iptakalim and propranolol on the maximal changes of SBP, LVSP, LVEDP and HR (P > 0.05). In conclusion, it was the first time to study the effects of amlodipine, hydrochlorothiazide or propranolol, which had different mechanisms of action from iptakalim, on cardiovascular effects of iptakalim in anesthetized normal rats. This study proved that the combination of iptakalim with hydrochlorothiazide or propranolol respectively had significant synergism on lowering blood pressure, while the combination of iptakalim/amlodipine had additive action on lowering blood pressure. Meanwhile the antihypertensive effect was explicit, stable and long-lasting. Iptakalim thus appears suitable for the clinical treatment of hypertensive people who need two or more kinds of antihypertensive agents.
Amlodipine ; pharmacology ; Animals ; Antihypertensive Agents ; pharmacology ; Blood Pressure ; drug effects ; Drug Synergism ; Heart Rate ; Hydrochlorothiazide ; pharmacology ; Hypertension ; Propranolol ; pharmacology ; Propylamines ; pharmacology ; Rats

Objective:To defermine the optimal harvest time for P. notoginseng through studying the changes of saponin contents with growth periods.Methods: P.notoginseng samples were collected from the experiment al plot regularly, and then the contents of total saponin and some main single saponins were analyzed by HPLC. Results:Total saponin contents decreased from April through July, and increased from August through December. Conclusion:The optimal harvest time is determined as from October through December, which corresponds to the traditional harvest time.

OBJECTIVETo select the main directions and the objects in breeding the high yield of Panax notoginseng by the correlation and path analysis of main agronomic character of P. notoginseng.

METHODSamples in fifty-two districts of Yunnan and Guangxi were collected. The height of plant, the diameter of stem, the number, length, width, size of leaf and the weight of each root of those samples were measured.

RESULTThe greatest contribution to the weight of each root is the size of leaf.

CONCLUSIONThe size of leaf should be key to the high yield of cultribution of P. notoginseng and the size of leaf especially the width of leaf should be selected in breeding. At the same time, the height of plant and the diameter of stem should be considered.

Breeding ; methods ; Panax ; anatomy & histology ; growth & development ; Plant Leaves ; anatomy & histology ; Plant Roots ; anatomy & histology ; Plants, Medicinal ; anatomy & histology ; growth & development

A sample pretreatment method combining column clean-up with dispersive liquid-liquid microextraction (CCU-DLLME) for determination of polycyclic aromatic hydrocarbons (PAHs) in oil-field water was proposed. With this method,most organic interferences in matrix were cleaned up,and PAHs were purified, enriched and analyzed by gas chromatography/mass spectrometry directly. The influences on extraction efficiency including the kinds of column packing,weight ratio between column packing and sample, column flow rate,type and volume of extraction solvent, type and volume of disperser solvent and extraction time were investigated, respectively. Finally, 12 g of H103 macroporous resin was selected as column packing,12﹕5 of weight ratio between column packing and sample and 4 BV/h of column flow rate were selected in CCU. The resulting eluate was added with 1.00 mL of acetone (disperser solvent) and 15 μL of carbon tetrachloride (extraction solvent),followed by DLLME for 2 min. Under the optimum conditions,the enrichment factor of PAHs was 730-1579,the limits of detection (S/N=3) were 1.1-5.3 ng/L, the linear range was 0.01-50 μg/L,the RSDs(n=5) were 0.6%-3.4% and the recoveries were 82.6%-104.6%. This method could greatly reduce the influence of organic interferences in matrix, and was fit for the rapid analysis of pollutants in oil-field water especially.

Objective To look into the current distribution of iodine deficiency area in Shandong province and to guide the re-defined iodine deficiency area and to supplement iodine scientifically. Methods In 2008, 100 iodine deficiency counties(cities, districts), designated in Shandong province's "to supplement iodized salt to eliminate the hazard of iodine deficiency management regulations", were selected in the study. One to three samples were collected from water source which was used by the majority of local residents in the 100 iodine deficiency places and iodine concentration was tested by As3+-Ce4+ catalyzing spectrophotometry. Results A total of 65 716 water samples were collected. Sample recovery efficiency reached 99.8%(65 572/65 716). The median water iodine was 5.57 μg/L, with 82.05%( 1097/1337 ) of the township(town) met criteria for the classification of iodine deficiency areas(water iodine ＜ 10 μg/L), 17.43%(233/1337) of the township (town) water iodine moderate(water iodine 10 - 150 μg/L), and 0.52%(7/1337)of the township(town) should be defined high iodine areas(water iodine ＞ 150 - 300 μg/L). Conclusions The iodine deficiency areas should be redefined because water iodine concentrations of iodine deficiency areas have changed. We suggest that the smallest place to supply salt with different range of iodine content is set to the township(town).

OBJECTIVETo study the effects of iptakalim (Ipt), an ATP-sensitive potassium channel opener, on cardiac remodeling induced by isoproterenol (ISO) in Wistar rats.

METHODSISO was given subcutaneously (85 mg/(kg x d), sc, 7 days) to induce cardiac remodeling in rats. The rats in Ipt treated group were administrated with Ipt 3 mg/kg (po) after ISO injection. After treated with Ipt for 6 weeks, the hemodynamic parameters were tested by an eight channel physiological recorder (RM-6000). Then the heart weight was weighed and the cardiac remodeling index was calculated. HE stain and Masson's stain were employed to perform histological analysis, the hydroxyproline(Hyp) content in cardiac tissue was detected by colorimetric method, radioimmunoassay was used to measure the plasma levels of endothelin-1 (ET-1) and prostacyclin (PGI2).

RESULTSSix weeks after ISO injection, the cardiac functions of model group were damaged markedly compared with those of normal group. The characteristics of ventricular remodeling in model group included that the heart weight index, myocyte cross-sectional area, myocardial fibrosis, and the hydroxyproline content in cardiac tissue were all increased significantly. The plasma level of ET-1 was increased, while the plasma level of PGI2 was decreased significantly. These changes could be reversed by Ipt treatment (3 mg/(kg x d) for 6 weeks).

CONCLUSIONIpt can reverse cardiac remodeling induced by isoproterenol in rats. The endothelial protective effect regulating effects of Ipt on the balance between the ET-1 and PGI2 system may be involved in its mechanisms.

Animals ; Endothelin-1 ; blood ; Hemodynamics ; Hydroxyproline ; metabolism ; Isoproterenol ; pharmacology ; KATP Channels ; drug effects ; Male ; Myocardium ; metabolism ; Propylamines ; pharmacology ; Prostaglandins I ; blood ; Rats ; Rats, Wistar ; Ventricular Remodeling ; drug effects