OBJECTIVE To study air disinfection methods in unremitting operating room,we compared effect of using trioxide disinfector(used in operating room "A") with YKX/G100-type medical air disinfection and purification machine(used in operating room "B") in disinfecting air inside unremitting operating room.METHODS To observe the killing effect on air natural bacteria of the two methods,we used natural sedimentation monitoring the different stages sampling before and after sterilization and at the beginning stage of the unremitting operation.RESULTS Both the two methods could achieve the air natural bacteria eradication rate above 85%.The air bacteria colony number obviously upgraded after the beginning of unremitting operation in operating rooms "A";but in operating rooms "B",the number fell-off slowly.CONCLUSIONS The medical air disinfection and purification machine can shorten the interval of operations,it is the better approach of continuous air disinfection in solving the unremitting operating room with personnel existence.

Objective To establish the quality standard for Yangxue Yishen Capsules. Methods Rhizoma Gastrodiae, Herba Epimedii and Radix et Rhizoma Salviae Miltiorrhizae in the formula were identified qualitatively by TLC. The content of Astragaloside IV was determined by HPLC-ELSD method. The Diamonsil C18(2) column (4.6 mm×250 mm, 5 μm) was used. The mobile phase was acetonitrile-water (33∶67) with 1.0 mL/min flow rate at 35 ℃. The temperature of drift tube for ELSD was 105 ℃, the air flow rate was 2.7 L/min. Results The TLC displayed clear spots on their right positions repeatedly. The linear range of Astragaloside IV was 0.397 0-5.955 0 μg (r=0.999 9). The average recovery was 102.0%, RSD was 1.5% (n=6). Conclusion The method is simple and quick. It can be used as quality control method of Yangxue Yishen Capsules.

Objective To explore the imaging features of solitary fibrous tumor (SFT)in the head and neck.Methods The CT and MR findings of 10 patients with SFT in the head and neck confirmed by hsitopathology were analyzed retrospectively.All patients underwent CT (including contrast-enhanced dual-phase CT),and MR imaging was obtained in 2 patients.Results All 10 lesions were found as solitary masses ranging in maximum diameter from 20 to 1 1 5 mm (average 35.5 mm),with the location in the orbit (2 cases),nasal cavity and nasal sinuses (4 cases),parotid gland (1 case),supraclavicular region (1 case),subcutaneous tissue of the maxillofacial (1 case)and occipital region (1 case).The lesions showed elliptic shape in 7 cases and lobulated configuration in 3 cases.The majority (8/10 )of lesions demonstrated well-defined margin.The lesions on CT imaging were isodensity or low density, homogeneous density in 4 cases and inhomogeneous density in 6 cases,cystic changes in 2 cases,calcification in 1 case.9 lesions showed strongly homogeneous (n=3)or inhomogeneous (n=6)enhancement,1 lesion showed mildly homogeneous enhancement on contrast-enhanced CT imaging.On dual-phase enhanced CT,8 patients exhibited a rapidly enhancing and slow washout pattern,1 patient exhibited a rapidly enhancing and rapid washout pattern,and 1 patient exhibited delayed enhancement.The lesions showed homogeneous isointense relative to gray matter on T1 WI in 1 patient,mixed isointense and hypointense in 1 patient.On T2 WI,the lesion showed isointense signal in 1 patient,and heterogeneous mixed isointense and hyperintense signal in another.2 lesions demonstrated markedly homogeneous and inhomogeneous enhancement respectively.Conclusion Solitary fibrous tumors shall be considered in cases of inhomogeneous hypervascular tumors in the head and neck.Compared with the gray matter,isointense or mildly hyperintense signal on T2 WI, marked enhancement on contrast-enhanced CT,and a rapidly enhancing and slow washout pattern on dual-phase enhanced CT may be valuable imaging features of SFT.

Objective To establish a high throughput phenotypic test for the detection of drug re-sistance in human immunodeficiency virus(HIV)strains. Methods The gene encoding luciferase was in-activated through restriction enzyme digestion and ligation. LacZ gene was used to replace the genes encoding original protease and reverse transcriptase. pol genes were amplified from pSG3△env plasmid and cloned in-to a new backbone plasmid through infusion. The factors that might affect the results of the test were opti-mized. Results The parental backbone plasmid pNL4-3. Lac was constructed,of which the gene encoding luciferase was inactivated and bearing the LacZ gene instead of genes encoding protease and reverse tran-scriptase. Several influential factors including cell numbers(10 000 / well),virus inoculation(200 TCID50 /well)and the concentration of DEAE-dextran(15 μg/ ml)were optimized. The reproducibility of this test was confirmed by testing 12 anti-HIV drugs against 2 pseudovirus strains 8 times,presenting the coefficient of variations(CVs)from 4. 32% to 28. 46% . Six types of pseudovirus were constructed and tested against the 12 anti-HIV drugs,the results of which were compared with those by using the pSG3△env-based pseud-ovirus test. The results of the two tests presented good consistency. Conclusion The high throughput phe-notypic test based on pNL4-3. Lac plasmid,combining the advantages of pSG3△env and pNL4-3 systems, could be used to analyze the drug resistance patterns of HIV-1 infectors and screen new drugs for antiretrovi-ral therapy in a rapid and effective way.

A method for simultaneous determination of the shikonin, acetyl shikonin and β, β'-dimethylpropene shikonin in Onosma hookeri and the chromatographic fingerprint was estabished by HPLC-DAD on an Agilent Zorbax SB-column with a gradient elution of acetonitrile and water at 0.8 mL x min(-1), 30 degrees C. The quality assessment was conducted by comparing the content difference of three naphthoquinone constituents, in combination with chromatographic fingerprint analysis and systems cluster analysis among 7 batches of radix O. hookeri. The content of the three naphthoquinone constituents showed wide variations in 7 bathces. The similarity value of the fingerprints of sample 5, 6 and 7 was above 0.99, sample 2 and 3 above 0.97, sample 3 and 4 above 0.90, and other samples larger than 0.8, which was in concert with the content of three naphthoquinone constituents. The 7 samples were roughly divided into 4 categories. The results above indicated that the using of this medicine is complex and rather spotty. The established HPLC fingerprints and the quantitative analysis method can be used efficiently for quality assessment of O. hookeri.
Boraginaceae ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; Naphthoquinones ; analysis ; Plant Roots ; chemistry

Objective To observe the therapeutic efficacy of electrical stimulation and balloon dilatation in treating cricopharyngeal achalasia after a brainstem stroke.Methods Thirty dysphagia patients with cricopharyngeal achalasia after a brainstem stroke were randomly divided into an experimental group and a control group, each of 15.The experimental group was given real-time electrical stimulation and balloon dilatation, while the control group was treated using common electrical stimulation and balloon dilatation.Results Twenty-six patients in the 2 groups returned to oral feeding after treatment.Videofluoroscopy revealed that the cricopharyngeal sphincter had relaxed and the food passed successfully when swallowing.No aspiration was observed.There was no significant difference in swallowing between the two groups, but the average treatment time, days of treatment and cost of therapy in the experimental group were significantly less than in the control group.Conclusions Either real-time electrical stimulation or common electrical stimulation combined with balloon dilatation can treat dysphagia effectively, but the former can shorten the course of treatment and lower its cost.

Objective ToexploretheapplicationofVasoCT,astentimagingtechnique,instent-assisted coilaneurysmembolization.Methods Twentyconsecutivepatientswith23intracranialaneurysmswere treated with stent-assisted aneurysm embolization in the General Hospital of Armed Police Forces from December 2013 to November 2014 were enrolled. The patients performed VasoCT scan immediately after procedure. Then all the available images were used for stent-optimized reconstruction respectively. Under the XpertCT mode,the available images were observed with both volume imaging and maximum intensity projection. The available images were analyzed and they were divided into very clear,less clear,and not clearaccordingtothestentdevelopingclarity.Results Ofthe22aneurysmstreatedwithstent-assisted embolization,16 were occluded completely,6 were occluded partially. All the stents were expanded completely and were released to the expected locations;11 aneurysm stents developed clearly,9 developed less clearly,and 2didnotdevelopclearly.Conclusion VasoCTcanbeusedinthestent-assistedaneurysmembolization.It can clearly reveal the microscopic structure of the stents,location,relationship with the artery wall,and relationship between stents and coils. The clarity of stent development is associated with the diameters of the packed coils,and the stents are also affected by the metal artifacts projecting direction and the dense degree of the packing coils.

Objective To investigate the neural proliferation , differentiation and apoptosis of the developing spinal cord of the mouse and to discuss the mechanism of spinal cord ’ s development .Methods 5-Bromodeoxyuridine ( BrdU) assay was used to mark the proliferative neural stem cells , and the immunofluorescent stainings ( DCX, NeuN and Caspase8) were carried out to visualize the newborn neurons , mature cells and apoptotic cells in the spinal cord with 173 mice arrange from E18 to P90.Results BrdU positive neural stem cells appeared evenly in the spinal cord at early days . With age increasing , the neural stem cells differentiated into neuroglial cells and neurons .The newborn neurons in the subventricular zone migrated toward the intermediate zone ( putative gray matter ) and differentiated into mature neurons gradually .With neurons ’ concentrating towards the center , the gray matter formed an “H” shape .In the meantime , with neural differentiation , some apoptotic neurons appeared among the newborn neurons and mature neurons . Double immunostaining showed that most apoptotic neurons were newborn neurons , suggesting the neuroapoptosis more likely occurred in newborn neurons .The statistical data showed that the number of DCX , NeuN and Caspase-8 positive cells reduced with age increasing , suggesting neural differentiation and neuroapoptosis decreased during spinal cord ’ s development .Conclusion Neural proliferation , neural differentiation and neuroapoptosis occur in developing spinal cord . They work together to regulate the formation and development of the spinal cord .

Objective:To construct a discharge preparation service program for elderly lung cancer patients and their caregivers based on binary coping theory, evaluate its clinical feasibility.Methods:To develop discharge preparation service for elderly lung cancer patients and their caregivers by literature retrieval, expert correspondence consultation and theoretical research. The program included three themes: binary evaluation, binary management behaviorand binary health, and six intervention strategies: evaluation of symptoms, care goals and intentions, decision making, emotional communication support, management of physical function changes and general health behavior. From July to September 2021, 30 pairs of elderly lung cancer patients and their caregivers were recruited and assigned into the control group and the experimental group with 15 pairs in each group according to random numbers generated by computer. The feasibility and clinical effect of the program were evaluated by feasibility evaluation index, discharge readiness, dual coping and comprehensive needs scale of caregivers.Results:In this study, the recruitment rate was 76%(32/42), the retention rate was 94%(30/32), and the acceptance rate of the intervention plan in the experimental group was 100%. After intervention, the total scores of discharge readiness was (83.00 ± 2.59), the patient dyadic coping was (136.80 ± 4.54), caregiver dyadic coping was (136.33 ± 3.56) and caregiver comprehensive needs was (124.37 ± 11.69) in the experimental group, which were better than those of in the control group, (74.40 ± 4.17), (129.07 ± 4.83), (120.33 ± 9.17) and (206.57 ± 9.14), the differences were statistically significant ( t values were -6.78- 5.54, all P< 0.05). Conclusion:The discharge preparation service plan for elderly lung cancer patients and caregivers based on dyadic coping theory is scientific and feasible, but the plan still needs further optimization, improvement and large sample randomized controlled trial to verify.

Human xanthine oxidase is considered to be a target for therapy of hyperuricemia. Cichorium intybus is a Chinese plant medicine which widely used in Xinjiang against various diseases. In order to screen the inhibitors of xanthine oxidase from C. intybus and to explore main pharmacological actions of cichory a compound collection of C. intybus was built via consulting related references about chemical research on cichory. The three-dimensional crystal structure of xanthine oxidase (PDB code: 1N5X) from Protein Data Bank was downloaded.. Autodock 4.2 was employed to screen the inhibitors of xanthine oxidase from cichory 70 compounds were found to possess quite low binding free energy comparing with TEI (febuxostat). C. intybus contains constituents possessing potential inhibitive activity against xanthine oxidase. It can explain the main pharmacological actions of cichory which can significantly lower the level of serum uric acid.
Chicory ; chemistry ; Databases, Protein ; Drugs, Chinese Herbal ; chemistry ; Enzyme Inhibitors ; chemistry ; Humans ; Molecular Docking Simulation ; Molecular Structure ; Xanthine Oxidase ; antagonists & inhibitors ; metabolism