Objective: To investigate the effect of colloidal solution infusion on cerebral blood flow in patients with cerebral vasospasm after aneurysmal subarachnoid hemorrhage. Methods: Thirty patients diagnosed as aneurysmal subarachnoid hemorrhage with digital subtraction angiography (DSA) were divided into a vasospasm group (n = 12) and a control group (n = 18) according to whether they had cerebral vasospasm or not. After evaluating the regional cerebral blood flow (rCBF) of the bilateral anterior cerebral artery, middle cerebral artery and posterior cerebral artery with Xe-CT, the colloidal solution (succinylated gelatin, 4 mL/kg) was injected intravenously in the patients of the vasospasm group within 30 minutes. Xe-CT was performed again, and the changes of rCBF before and after the colloidal solution expansion were compared. The changes of blood pressure, heart rate, and central venous pressure before and after infusion were documented. Results: Circled digit oneThe rCBF of bilateral anterior cerebral artery, middle cerebral artery and posterior cerebral artery was more than 30 mL·100 g-1·min -1 in the control group. The rCBF was lower than 30 mL·100 g-1·min-1at least in 1 blood supplied region in the vasospasm group (72 blood supply regions altogether) , in which CBF were lower than 25 mL·100 g-1·min-1 in 7 blood supplied regions. Circled digit twoBefore and after the expansion, there were no significant differences among the systolic and diastolic blood pressure, mean arterial pressure, and central venous pressure in the vasospasm group (P >0.05). Circled digit threeOf the 65 vessels with rCBF >25 mL·100 g-1·min-1 there were no significant differences in rCBF before and after the expansion (P = 0.272) ; of the 7 vessels with rCBF ≤ 25 mL·100 g-1·min-1, the rCBF increased from 20 ± 3 mL·100 g-1·min-1to 34 ± 6 mL·100 g-1·min-1. There were significant differences (P <0.01). Circled digit oneOne year follow-up after the procedure, there was no significant difference in GOS score between the 2 groups. Conclusion: Colloidal solution expansion may increase the rCBF of the ischemic regions in patients with cerebral vasospasm and help to improve the prognosis of the patients.

Objective:To explore the solutions to enhance the professional skills and humanistic quality of neurosurgery in theprimary hospitals, and to improve the neurosurgery medical care level.Methods: a comprehensive analysis of the literature retrieval as well as information collected in practice the first hospital of Zhangjiakou in, extract the problems of neurosurgeon training in primary hospital, to carry out grading treatment requirements, explore the basic path to improve the clinical ability of primary hospital neurosurgeon, and through the establishment of standard clinical operating procedures and systems to ensure the quality of medical service.Results: from Wanfang database retrieved from 2006 to 2015 research journals in Chinese on improving grassroots doctors ability of 819 papers, bibliometric analysis shows that the trend is increasing year by year, in 2015 issued a number is 5.21 times in 2006. There are 28 papers including neurosurgery area, accounting for 3.42% of the total number of papers; the hot topics focus in the mode of training neurosurgery doctors in primary hospitals,transfer the technology of minimally invasive neurosurgery and spreadmodern neurosurgery theory and knowledge.Conclusion: to improve the ability of doctorsof primary hospitals should be combined with the characteristics of local diseasesand primary hospital neurosurgeon status, from making training plan, appropriate to establish the corresponding clinical standard, promote the essential neurosurgery technology, in order to ensure implementation of the tiered diagnosis and treatment .

OBJECTIVE:To study the volatile constituents of the compound extract from Folium Perillae,Pericarpium Citri and Herb Schizonepetae in Siji Ganmao tablet by supercritical CO2 fluid extraction (SFE-CO2). METHODS:Supercritical CO2 ex-traction technology was used to extract the volatile constituents of 3 medical material in Siji Ganmao tablet. The chemical constitu-ents of the compound extract from 3 medicinal materials were analyzed by GC-MS. RESULTS:The extracting rate of SFE-CO2 was 2.21%,21 compounds in the compound extract were separated and 16 compounds were identified with the major components of si-nensetin(36.56%)and linolic acid(19.52%). The extracting rate of water steam distillation(SD)was 1.035%,51 compounds in the compound extract were separated and 32 compounds were identified with the major components of D-limonene(62.40%) and thujone(15.49%). CONCLUSIONS:The volatile constituents of F. perillae,P. cCitri and H. Schizonepetae can be compound ex-tracted by SFE-CO2,however,it is different from the constituents of the compound volatile oil by SD.

Based on the anatomic data and fractal theory, the vascular tree model of forearms similar to actual vessel was established, and then the 3D heat transfer model of forearms based on the actual vessel anatomic structure was created. The model was analyzed and investigated with finite element method to explore the influential factors such as dimensional distribution of vessel, blood perfusion rate and external heat source for the 3D temperature field. The simulation results were consistent with the experimental data derived from Pennes. The model well reflects the regional difference of tissue temperature caused by the irregular distribution of vessel, and provides temperature guidance for tumor thermotherapy.

Objective To determine if aquaporin1 ( AQP1) and aquaporin5 ( AQP5) are expressed in the alveolar-capillary membrane in rats, and to investigate the changes of AQP1 and AQP5 expression in the rat with acute lung injury.Methods The distribution of AQP1 and AQP5 in alveolar capillary membrane was investigated by immunohistochemistry and immunoelectron microscopy with affinity-purified antibodies to human AQP1 and AQP5.The possibility that alveolar capillary membrane AQP1 and AQP5 undergo altered regulation was studied by a rat model established using intra-tracheal instillation of lipopolysaccharide (LPS).Results Immunolabelling showed that AQP1 was stained primarily in the microvascular endothelium of normal lungs, while AQP5 was expressed in type I pneumocytes. Immunohistochemical analysis showed a significant decrease in the expression of AQP1 and AQP5 in injured lungs at 4 -48 h after LPS instillation.AQP1 protein was resumed partly at 24 h after LPS instillation and steroid administration, whereas AQP5 was unchanged.Conclusions The decreased expressions of AQP1 and AQP5 in injured lungs suggest that both of them may play a role in abnormal fluid transportation.

Statins, a class of cholesterol-lowering drugs, have created a revolution in the prevention and treatment of cardiovascular disease. Mevastatin as the first statin originated from microbial metabolites. Its discovery is connected with the research of the biosynthesis of cholesterol. Atorvastatin, another statin, is one of the most famous blockbuster drugs in the pharmaceuticals market. The legend of statins is not only a success story in science, but also a classical case for business. In this paper, we review the research and development of statins and hope to give some enlightenment to scientists engaged in relevant research.

Objective:To evaluate effects of different medication forms of dexmedetomidine on perioperative cognitive function in elderly patients undergoing radical operation of gastric carcinoma, and Ramsay sedation score.Methods:A total of 150 patients aged 65 years and 75 years scheduled for elective radical operation of gastric carcinoma from December 2018 to December 2019 in Shanxi Provincial Cancer Hospital were enrolled, and they were divided into 3 groups according to random number table method: different medication forms of dexmedetomidine groups (group A, group B) and the control group (group C), 50 cases in each group. The patients in group A and group B continued to pump dexmedetomidine at a rate of 0.5 μg·kg -1·h -1 and 0.3 μg·kg -1·h -1 respectively for 15 min before induction of anesthesia. And the patients in group C were given intravenous pumping of an equal volume of 0.9% NaCl for 15 min. Subsequently, patients in group A and group B received continuous intravenous infusion of 0.3 μg·kg -1·h -1 for 30 min before the end of operation, the patients in group C received 0.9% NaCl infusion of equal volume until the end of operation. The cognitive function of the patients was measured by using the Monterey cognitive assessment scale (MoCA) the day before surgery and on day 1,3 and 7 after surgery, and the incidence of perioperative neurocognitive disorder (PND) was counted. Ramsay sedation score at 30 min, 24 h and 48 h after surgery was compared among the three groups. Results:There were 3 patients in group A and 3 patients in group C were excluded because they were transferred to ICU due to serious postoperative complications. There were significant differences in MoCA score among the three groups on day 1, 3, 7 after operation (all P < 0.01); MOCA score of group A, B and C on day 7 after operation was (26.9±0.7) scores, (26.6±1.0) scores, (26.3±1.2) scores, respectively, and the difference between group A and group C was statistically significant ( P < 0.01). The incidence of PND among the three groups on day 1, 3, 7 after surgery had statistically significant differences (all P < 0.05), and the incidence of PND in group A was lower than that in group B and C (all P < 0.05). Ramsay sedation score among the three groups at 30 min and 24 h, 48 h after operation showed statistically significant differences (all P < 0.01), and that in group C was lower than that in group A and group B, and the differences were statistically significant (all P < 0.01). Ramsay sedation score at 24 h after operation in group A was high than that in group B and group C (all P < 0.01). Conclusions:Dexmedetomidine assisted with anesthesia can reduce the incidence of PND in elderly patients undergoing radical operation of gastric carcinoma and enhance the sedative effect. What's more, the most obvious effect is the infusion of 0.5 μg·kg -1·h -1 before anesthesia induction.

Objective To investigate effect of emodin on cell membrane, protein and nucleic acid synthesis of MRSA41577, and systematically investigate the anti-bacterial mechanism of emodin.Methods TTC assay was used to detected the anti-bacterial activity of emodin on MRSA 41577. Conductivity and macromolecular were detected to investigate the effect of emodin on MRSA41577 cell membrane .SDS-PAGE was used to detect the effect of emodin on the soluble protein synthesis.DAPI staining was used to detect the effect of emodin on nucleic acid synthesis.UV-visible spectrophotometric was used to detected the interaction between emodin and DNA.ResuIts Emodin has significant inhibitory activity on MRSA41577, and the minimum inhibitory concentration was 8μg/mL.After treated with 8 μg/mL emodin for 6h, compared with control group, the macromolecular and conductivity improved (71.48 ±0.026)% (P<0.01) and (2.39 ±0.102)%(P<0.05), sepreatly.Compared with control, after treated with 8μg/ml emodin for 16h,the protein reduced 32.8%, and the contents of DNA and RNA reduced (4.82 ±1.06)%(P<0.05,) and (6.67 ±0.36)%(P<0.053).The UV-visible spectrophotometric results indicated that emodin could integrate with DNA through hydrogen bond.ConcIusion The anti-bacterial mechanism of emodin mainly through damage the cell membrane , inhibit the replication and transcription of DNA through hydrogen bond , inhibit the synthesis of protein, and thus inhibit the biological function of bacteria.

0.05). The positive rate (46.2%) of EA IgG antibody in MS group was significantly higher than those in the other two groups (18.3%, 9.5%)(all P

A PCR method was used to amplify the sequence encoding the mature peptide of?-mannanase of Bacillus subtilis. The gene was inserted into the Pichia pastoris vector pPIC9K, downstream of?-factor signal peptide sequence. The resultant recombinant plasmid pPIC9K-MAN was lineared by BglII digestion and introduced into the host Pichia pastoris GS115 by PEG method. After screen, the recombinant P. pastoris strain MAN22 was obtained and fermented in large scale 5L fermenter. The recombinant mannanase activity could reach to 1102IU/ml. The properties of the recombinant mannanase were characterized.