Risk factors for axial deviation in treatment of tibial bone defects by bone transport with Orthofix unilateral external fixator / 中华创伤骨科杂志

Objective:To investigate the risk factors for axial deviation in the treatment of tibial defect susing Orthofix unilateral external fixator and proximal tibial osteotomy for bone transport.Methods:A retrospective study was performed to analyze the clinical data of 90 patients who had been treated for tibial bone defects by the Orthofix unilateral external fixator at Department of Microrepair and Reconstruction, The First Hospital Affiliated to Xinjiang Medical University from May 2012 to June 2019. There were 77 males and 13 females with a mean age of 41.2 years (from 17 to 63 years).The bone defects ranged from 4 to 13 cm in length. According to the Paley criteria for axial deviation, the 90 patients were divided into 2 groups: a deviation-free group with no axial deviation or an axial deviation ≤5° and a deviation group with an axial deviation>5°. The 2 groups were compared in terms of age, number of prior surgery, defect length, placement angle of Schanz screws, external fixation time, external fixation index and bending degree of Schanz screws at the last follow-up.The factors with P<0.05 were analyzed by multivariate logistic regression to find the risk factors for coronal axial deviation. Results:The 90 patients were followed up for an average of 23 months (from 12 to 40 months). The incidence of axial deviation in this cohort was 36.7% (33/90).The deviation group had a significantly larger number of prior surgery [5 (3, 6) times], a significantly longer defect length [8 (8, 9) cm], a significantly longer external fixation time [400.0 (341.8, 426.3) d], and a significantly greater bending degree of Schanz screws at the last follow-up [1.2° (0.4°, 3.5°)] than the deviation-free group [3 (2, 3) times, 6 (5, 8) cm, 340.8 (226.5, 422.8) d, and 0.8° (0.2°, 3.7°)] (all P<0.05). Multivariate logistic regression analysis showed that the number of prior surgery ( OR=2.581, 95% CI: 1.496-4.450, P=0.001) and the defect length ( OR=5.310, 95% CI: 1.952-14.442, P=0.001) were the risk factors for the axial deviation. Conclusion:In the treatment of tibial defect susing Orthofix unilateral external fixator and proximal tibial osteotomy for bone transport, the more prior surgeries and the longer a bone defect, the higher the risk for axial deviation.

Comparative analysis of single cell lung atlas of bat, cat, tiger and pangolin

Horseshoe bats (Rhinolophus sinicus) might help maintain coronaviruses severely affecting human health, such as SARS-CoV and SARS-CoV-2. It has long been suggested that bats may be more tolerant of viral infection than other mammals due to their unique immune system, but the exact mechanism remains to be fully explored. During the COVID-19 pandemic, multiple animal species were diseased by SARS-CoV-2 infection, especially in the respiratory system. Herein, single-cell transcriptomic data of the lungs of a horseshoe bat, a cat, a tiger, and a pangolin were generated. The receptor distribution of twenty-eight respiratory viruses belonging to fourteen viral families were characterized for the four species. Comparison on the immune-related transcripts further revealed limited cytokine activations in bats, which might explain the reason why bats experienced only mild diseases or even no symptoms upon virus infection. Our findings might increase our understanding of the immune background of horseshoe bats and their insensitivity to virus infections.

Screening of cell-virus, cell-cell, gene-gene interactions among kingdoms of life at single cell resolution

The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) issued a significant and urgent threat to global health. The exact animal origin of SARS-CoV-2 remains obscure and understanding its host range is vital for preventing interspecies transmission. Previously, we have assessed the target cell profiles of SARS-CoV-2 in pets, livestock, poultry and wild animals. Herein, we expand this investigation to a wider range of animal species and viruses to provide a comprehensive source for large-scale screening of potential virus hosts. Single cell atlas for several mammalian species (alpaca, hamster, hedgehog, chinchilla etc.), as well as comparative atlas for lung, brain and peripheral blood mononuclear cells (PBMC) for various lineages of animals were constructed, from which we systemically analyzed the virus entry factors for 113 viruses over 20 species from mammalians, birds, reptiles, amphibians and invertebrates. Conserved cellular connectomes and regulomes were also identified, revealing the fundamental cell-cell and gene-gene cross-talks between these species. Overall, our study could help identify the potential host range and tissue tropism of SARS-CoV-2 and a diverse set of viruses and reveal the host-virus co-evolution footprints.

Viral receptor profiles of masked palm civet revealed by single-cell transcriptomics

Civets are small mammals belonging to the family Viverridae. The masked palm civets (Paguma larvata) served as an intermediate host in the bat-to-human transmission of severe acute respiratory syndrome coronavirus (SARS-CoV) in 20031. Because of their unique role in the SARS outbreak, civets were suspected as a potential intermediate host of SARS-CoV-2, the etiological pathogen of the COVID-19 pandemic. Besides their susceptibility to coronaviruses, civets can also be infected by other viruses, such as canine distemper viruses2, parvoviruses3, influenza viruses4, etc. Regarding the ecological and economical role of civets, it is vital to evaluate the potential threats from different pathogens to these animals. Receptor binding is a necessary step for virus entry into host cells. Understanding the distribution of receptors of various viruses provides hints to their potential tissue tropisms. Herein, we characterized the cell atlas of five important organs (the frontal lobe, lung, liver, spleen and kidney) of masked palm civets (Paguma larvata) and described the expression profiles of receptor associated genes of 132 viruses from 25 families, including 16 viruses from 10 families reported before that can attack civets and 116 viruses with little infection record.

Plasma cell-free DNA promise disease monitoring and tissue injury assessment of COVID-19

COVID-19 is a huge threat to global health. Due to the lack of definitive etiological therapeutics currently, effective disease monitoring is of high clinical value for better healthcare and management of the large number of COVID-19 patients. In this study, we recruited 37 COVID-19 patients, collected 176 blood samples upon diagnosis and during treatment, and analyzed cell-free DNA (cfDNA) in these samples. We report gross abnormalities in cfDNA of COVID-19 patients, including elevated GC content, altered molecule size and end motif patterns. More importantly, such cfDNA characteristics reflect patient-specific physiological conditions during treatment. Further analysis on tissue origin tracing of cfDNA reveals frequent tissue injuries in COVID-19 patients, which is supported by clinical diagnoses. Hence, we demonstrate the translational merit of cfDNA as valuable analyte for effective disease monitoring, as well as tissue injury assessment in COVID-19 patients.

Study of rrPDGF-BB gene modified BMSCs in promoting distraction osteogenesis of rat femur / 中华显微外科杂志

Objective:To investigate the therapeutic effect of rat bone marrow mesenchymal stem cells (BMSCs) transfected with recombinant rat platelet-derived growth factor BB (rrPDGF-BB) gene on the distraction osteogenesis.Methods:From October, 2019 to June, 2020, 48 batches of BMSCs were cultured from 48 young SD rats, 24 of which were transfected with rrPDGF-BB gene by lentivirus. Meanwhile, other 72 male adult SD rats were randomly selected to establish the right femoral distraction osteogenesis model. The rats were equally divided into 3 groups. PBS, BMSCs without intervention and BMSCs transfected with rrPDGF-BB gene were injected into the distraction space of each group of rats assigned as Blank group, Negative group and Experimental group, respectively. Results of the experiment were evaluated by means of imaging and immunohistochemistry. P<0.05 indicated a statistically significant difference. Results:The cultured BMSCs grew well. The expression of CD34(0.1%) and CD45(2.8%) in the third generation of BMSCs was low, and that of CD29 (95.1%) was high, which was consistent with the phenotype of BMSCs described in literatures. After transfection, the expression of green fluorescence gradually increased with the extension of transfection time, confirming the success of transfection. After 14 days, all rats reached the expected distance of distraction. The rats were observed at assigned time points in 2, 4 and 8 weeks. The photos of femur specimen showed that continuous callus could be seen in the experimental group, the hardness and colour were close to the normal bone tissue, and the activity of the distraction space was poor, which was lower than that of the blank group. X-ray examination showed that there were more new callus in the experimental group, and the bone marrow cavity was re-canalized earlier than that of the blank group; Micro-CT examination, in sagittal plane, showed that the distraction space of the experimental group healed well, the broken end was connected, and the recanalization of bone marrow cavity was earlier than that of the blank group; Micro-CT parameters of each group showed that trabecular thickness[(0.297±0.005) mm], trabecular number [(1.663±0.032) mm], bone volume fraction[(59.832±2.187)%] and bone mineral density[(0.586±0.014) g/cm 3] of the experimental group were the greatest, while trabecular separation[(0.399±0.051) mm] of the experimental group was the smallest. There was statistical difference between each group( P < 0.05); HE staining and VEGF immunohistochemistry showed that the vessels and chondrocytes formed earlier and were more in the experimental group than that in the blank group. In 8 weeks, the new callus joined into one piece under the microscope in the experimental group, and the bone marrow cavity was re-canalized with a large number of red blood cells. Conclusion:Studies have shown that BMSCs transfected with rrPDGF-BB gene can promote the formation of callus in the distraction area of rats, shorten the mineralisation time of new callus, and promote the maturation of new bone in the area of distraction osteogenesis.

The Trans-omics Landscape of COVID-19

System-wide molecular characteristics of COVID-19, especially in those patients without comorbidities, have not been fully investigated. We compared extensive molecular profiles of blood samples from 231 COVID-19 patients, ranging from asymptomatic to critically ill, importantly excluding those with any comorbidities. Amongst the major findings, asymptomatic patients were characterized by highly activated anti-virus interferon, T/natural killer (NK) cell activation, and transcriptional upregulation of inflammatory cytokine mRNAs. However, given very abundant RNA binding proteins (RBPs), these cytokine mRNAs could be effectively destabilized hence preserving normal cytokine levels. In contrast, in critically ill patients, cytokine storm due to RBPs inhibition and tryptophan metabolites accumulation contributed to T/NK cell dysfunction. A machine-learning model was constructed which accurately stratified the COVID-19 severities based on their multi-omics features. Overall, our analysis provides insights into COVID-19 pathogenesis and identifies targets for intervening in treatment.

Single-cell screening of SARS-CoV-2 target cells in pets, livestock, poultry and wildlife

A few animals have been suspected to be intermediate hosts of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, a large-scale single-cell screening of SARS-CoV-2 target cells on a wide variety of animals is missing. Here, we constructed the single-cell atlas for 11 representative species in pets, livestock, poultry, and wildlife. Notably, the proportion of SARS-CoV-2 target cells in cat was found considerably higher than other species we investigated and SARS-CoV-2 target cells were detected in multiple cell types of domestic pig, implying the necessity to carefully evaluate the risk of cats during the current COVID-19 pandemic and keep pigs under surveillance for the possibility of becoming intermediate hosts in future coronavirus outbreak. Furthermore, we screened the expression patterns of receptors for 144 viruses, resulting in a comprehensive atlas of virus target cells. Taken together, our work provides a novel and fundamental strategy to screen virus target cells and susceptible species, based on single-cell transcriptomes we generated for domesticated animals and wildlife, which could function as a valuable resource for controlling current pandemics and serve as an early warning system for coping with future infectious disease threats.

Changes of serum procalcitonin level in patients with severe trauma and its relationship with multiple organ failure / 中国基层医药

Objective To investigate the changes of serum procalcitonin (PCT) level in patients with severe trauma,and to analyze its relationship with multiple organ failure (MODS).Methods From October 2013 to October 2018,the serum PCT levels were measured in 40 patients with severe trauma complicated with MODS (MODS group:40 cases) and 62 patients without MODS (non-MODS group:62 cases) in Yuncheng Central Hospital.The relationship between PCT and severity of trauma score (ISS),sequential organ failure (SOFA),acute physiology and chronic health status score (APACHE Ⅱ) and prognosis was analyzed.The predictive value of PCT in the prognosis of patients with MODS and severe trauma combined with MODS was analyzed by ROC.Results The serum PCT levels of the MODS group were (8.25 ± 2.35) μg/L,(7.26 ± 2.49) μg/L,(3.62 ± 1.75) μg/L on the 1 st,3rd and 7th day after admission,respectively,which were higher than those of the control group (t =7.561,9.561,8.251,all P ＜0.05).The serum PCT level in the MODS group increased with the increase of APACHE Ⅱ score and ISS score(F =12.108,9.173,all P ＜ 0.05).The serum PCT level in the death group was higher than that in the survival group[(11.82 ± 3.75) μg/L vs.(4.92 ± 1.26) μg/L],and the difference was statistically significant (t =7.959,P ＜0.05).The area under MODS curve predicted by PCT for severe trauma patients was 0.848,with sensitivity and specificity of 80.00％ (32/40),82.50％ (33/40),respectively.The area under MODS curve predicted by PCT was 0.747,with sensitivity and specificity of 77.50％ (31/40),72.50％ (29/40),respectively.Conclusion The serum PCT level in patients with severe trauma complicated with MODS is significantly higher than that in patients without MODS,and its level is closely related to trauma,disease progression and prognosis.It is of great value to predict the occurrence and prognosis of MODS.

Analysis of influencing factors on hepatic encephalopathy in patients with non-cirrhotic portal hypertension / 中华肝脏病杂志

Objective@#To investigate the incidence of hepatic encephalopathy (HE) in patients with non-cirrhotic portal hypertension (NCPH) and to explore its risk factors.@*Methods@#The incidence rate of HE in 150 cases with NCPH was evaluated in two hospitals, and 188 cases of compensated cirrhosis patients were taken as control. Logistic regression was used to screen for independent risk factors for HE in patients with NCPH.@*Results@#The incidence of overt hepatic encephalopathy (OHE) in patients with NCPH was not statistically significantly different from that in patients with cirrhosis (4.7% vs. 6.9%, P = 0.682). The incidence of mild hepatic encephalopathy (MHE) was significantly lower than that of cirrhosis patients (32.7% vs. 46.3%, P < 0.05). The presence of upper gastrointestinal bleeding, infection and portosystemic venous shunt were the main independent factors for HE in NCPH patients (OR > 1, P < 0.05).@*Conclusion@#HE is one of the important complications of NCP, and may be influenced by factors such as upper gastrointestinal bleeding, infection and portosystemic venous shunt.

Role of TET3-induced DNA demethylation in methane-induced up-regulation of Nrf2 expression in rat spinal cord neurons subjected to oxygen-glucose deprivation and restoration injury / 中华麻醉学杂志

Objective To evaluate the role of TET3-induced DNA demethylation in methane-in-duced up-regulation of nuclear factor-erythroid 2-related factor 2 ( Nrf2) expression in rat spinal cord neu-rons subjected to oxygen-glucose deprivation and restoration ( OGD∕R) injury. Methods The primarily cultured spinal cord neurons of rats were seeded in 6-well plates at a density of 1×105 cells∕ml and divided into 5 groups ( n=48 each) using a random number table method: control group ( group C) , group OGD∕R, methane group (group M), methane plus TET3-siRNA group (group M+siTET3) and methane plus negative siRNA group (group M+siCon). The medium was replaced with glucose- and serum-free Earle's salt solution, and the neurons were exposed to 5％ CO2-95％N2 in an incubator for 2 h followed by routine culture to establish the model of OGD∕R. In group M, 200μl methane-saturated saline ( final concentration of methane 1. 8 mmol∕L) was added at oxygen-glucose restoration. TET3-siRNA 100 pmol∕L and negative siRNA 100 pmol∕L were added at 24 h before oxygen-glucose restoration to perform transfection in M+siTET3 and M+siCon groups, respectively. At 12 h of oxygen-glucose restoration, the neuronal survival rate, release rate of lactic dehydrogenase ( LDH) and apoptotic rate of neurons were measured, and the ex-pression of TET3 and Nrf2 protein and mRNA was detected by Western blot and fluorescent quantitative re-al-time polymerase chain reaction, respectively, and contents of superoxide dismutase (SOD), catalase ( CAT) and malonaldehyde ( MDA) were measured by enzyme-linked immunosorbent assay. Neuronal DNA was extracted for determination of methylation and hydroxymethylation rates of DNA ( by enzyme-linked im-munosorbent assay) and methylation of CpG island in Nrf2 gene promoter ( by fluorescent real-time methyla-tion specific polymerase chain reaction). Results Compared with group C, the survival rate of neurons was significantly decreased, the release rate of LDH and apoptotic rate were increased in group OGD∕R ( P<0. 01) . Compared with OGD∕R, the survival rate of neurons was significantly increased, the release rate of LDH and apoptotic rate were decreased, the expression of TET3 and Nrf2 protein and mRNA was up-regula-ted, DNA hydroxymethylation rate and contents of SOD and CAT were increased, and the DNA and Nrf2 promoter methylation rates and MDA content were decreased in group M ( P<0. 05 or 0. 01) . Compared with group M, the neuronal survival rate was significantly decreased, the release rate of LDH and apoptotic rate were increased, the expression of TET3 and Nrf2 protein and mRNA was down-regulated, the DNA hydroxymethylation rate and contents of SOD and CAT were decreased, and the DNA and Nrf2 promoter methylation rates and MDA content were increased in group M+siTET3 ( P<0. 05 or 0. 01) , and no signifi-cant change was found in the parameters mentioned above in group M+siCon ( P>0. 05) . Conclusion The mechanism by which methane up-regulates Nrf2 expression in rat spinal cord neurons subjected to OGD∕R injury is related to activating TET3 and promoting DNA demethylation in Nrf2 promoter.

Effects of different nutritional support on the intestinal function,C - reactive protein and plasma endotoxin in patients with severe acute pancreatitis / 中国基层医药

Objective To investigate the effects of different nutritional support on the intestinal function, C - reactive protein (CRP) and plasma endotoxin (LPS) in patients with severe acute pancreatitis (SAP). Methods From August 2012 to September 2016,112 patients with SAP in Yuncheng Central Hospital were selected and divided into three groups by random number table method. There were complete parenteral nutrition group(TPN group,n =37),early enteral nutrition group(EEN group,n = 37),parenteral and early enteral nutrition group(PN + EEN group, n = 38). The levels of CRP,LPS and tumor necrosis factor - α(TNF - α) in three groups were detected at the first day after admission,the seventh day and the fourteenth day after nutrition support respectively. The levels of D - lactic acid and diamine oxidase (DAO) in the three groups were detected at the first day after admission and the fourteenth day after nutrition support respectively. The occurrence of infection,abdominal distension,diarrhea,multiple organ failure syndrome (MODS),gastrointestinal bleeding among the three groups were compared at the fourteenth day after nutrition support. Results The levels of serum CRP,LPS and TNF - α at the seventh day and fourteenth day after nutrition support in the PN + EEN group[7d:(35. 56 ± 4. 54)mg/ L,(1. 59 ± 0. 58)EU/ L,(48. 56 ± 5. 25) ng/ L; 14d:(8. 68 ± 2. 36) mg/ L,(1. 23 ± 0. 43) EU/ L,(38. 63 ± 4. 82) ng/ L] were significantly lower than those in the TPN group[7d:(60. 86 ± 5. 63)mg/ L,(1. 91 ± 0. 59) EU/ L,(54. 10 ± 4. 02) ng/ L;14d: (28. 38 ± 2. 47) mg/ L, (1. 62 ± 0. 52)EU/ L,(44. 51 ± 4. 58)ng/ L]and the EEN group[7d:(59. 58 ± 5. 25)mg/ L,(1. 89 ± 0. 61)EU/ L, (52. 54 ± 5. 13) ng/ L;14d:(27. 45 ± 2. 13) mg/ L,(1. 58 ± 0. 46) EU/ L,(43. 21 ± 5. 20) ng/ L],the differences were statistically significant (tTPN group = 21. 451,35. 321,2. 369,3. 544,5. 121,5. 413,tEEN group = 21. 212,36. 127, 2. 183,3. 405,3. 320,3. 957,all P < 0. 05). The levels of D - lactic acid and DAO at the fourteenth day after nutrition support in the PN + EEN group[(5. 27 ± 1. 01)mg/ L,(5. 78 ± 1. 94)U/ L]were lower than those in the TPN group [(8. 62 ± 1. 26) mg/ L,(9. 32 ± 2. 04) U/ L] and the EEN group[(8. 43 ± 1. 08) mg/ L,(8. 98 ± 2. 01) U/ L] (tTPN group = 12. 619,12. 999,tEEN group = 7. 649,6. 968,all P < 0. 05). After nutritional support treatment for 14 days, the numbers of abdominal distension and diarrhea,MODS,infection in the PN + EEN group were 4 cases,2 cases and 5 cases,respectively,which were significantly lower than those in the EEN group(11 cases,8 cases,12 cases) and the TPN group(12 cases,9 cases,13 cases),the differences were statistically significant (χ2 = 5. 361,4. 321,4. 964, 3. 973,5. 442,4. 341,all P < 0. 05). Conclusion PN combined with EEN can effectively reduce the levels of CRP, LPS,TNF - α,D - lactic acid and DAO in patients with SAP,and improve the intestinal mucosal barrier function,it has fewer complications,the effect of clinical treatment is better,which is worthy of clinical promotion and application.

Comparison of bleeding volume during endoscopic sinus surgery in patients with hypertension under total intravenous anesthesia and combined intravenous with inhaled anesthesia / 临床麻醉学杂志

Objective To compare the bleeding volume during endoscopic sinus surgery in pa-tients with hypertension under total intravenous anesthesia or combination of intravenous with inhaled anesthesia.Methods Forty adult patients with hypertension (ASA Ⅰ or Ⅱ),male 25 and female 1 5,aged 35-54 years,agreed to be on electively endoscopic sinus surgery,were divided randomly into two groups(group A and group B,n =20 each).All patients were injected intravenously with fenta-nyl,propofol and cisatracurium during the induction of general anesthesia.During the maintenance stage of the general anesthesia,patients in group A were injected intravenously with propofol,and patients in group B were inhaled with sevoflurane until 5 minutes before the end of the operation.BIS was 40-60 during the operation in the two groups.After induction of anesthesia and tracheal intubation,ni-troglycerin and esmolol were given to adjust blood pressure and hypervolemic hemodilution was performed.. Bleeding volume and operation duration were recorded at the end of the operation.The arterial blood gas, blood lactate and coagulation function were monitored 30 minutes before the operation (T0 ),30 minutes (T1 )and 90 minutes after the operation beginning (T2 )and 30 minutes after the end of the operation (T3 ). Results Bleeding volume in group A was significantly less than that in group B (P <0.05).Fifteen minutes before the operation,the MAP of all the patients in two groups was controlled slowly to 60 mm Hg.Com-pare to those at T0 ,there was no significant difference in the arterial blood pressure,blood lactate and coag-ulation function at T1 ,T2 and T3 .Conclusion During the endoscopic sinus surgery with intravenous anes-thesia for patients with hypertension,the bleeding volume was less than that with inhalation anesthesia.

Preparation of Nephritis Dripping Pills and Its Pharmacodynamic Studies / 医药导报

Objective To prepare nephritis dripping pills and study its pharmacodynamic effects. Methods The nephritis dripping pills were self-made, and the preparation was optimized by using orthogonal method. The model of chronic renal failure was established through resection of 5/6 kidney, the effect of nephritis dripping pills on rats was investigated by urinary protein and renal pathology analysis. Results The optimal preparation for nephritis dripping pills was as follows:taking PEG4000:PEG6000 =2:1, drug:matrix =1:3, setting temperature at 80 ℃ and dropping distance as 7 cm. The pharmacodynamic results showed that:compared with the model control groups, the nephritis dropping pills and renal failure pills significantly reduced the 24 h urine protein levels (P<0. 01),and the nephritis dripping pills were significant superior to renal failure pills (P<0. 05). The histopathological results showed that the renal tubular of treated groups remitted to normal, renal interstitial presented a small amount of inflammation cell infiltration and renal interstitial fibrosis was suppressed. Conclusion The preparation of nephritis dripping pills is relatively stable,and have good therapeutic effects on chronic renal failure,but the optimal dose should be further verified.

Effect of Different Extracts of Smilax China L. on the Activity of Ovarian Cancer Cells / 中国药师

Objective: To investigate the effects of different extracts of Smilax china L on the activity of ovarian cancer cells. Methods:Solvent extraction method was used to extract the active ingredients of Smilax china L. , and CCK-8 assay method was ap-plied to detect the influence of different Smilax china L. extracts (0, 50, 100, 150 and 200μg·ml-1 ) on the survival rate of ovarian cancer cells including low invasiveness A2780 cells and high invasiveness HO-8910PM cells. At the same time, the status of the two kinds of ovarian cancer cells at different time points (24, 48 and 72 h) was observed. Results:The IC50 of N-butanol extracts (SCR-B) on HO-8910 and A2780 ovarian cancer cells was 47. 5 μg· ml-1 and 69. 2 μg· ml-1 , respectively, and that of ethyl acetate ex-tracts (SCR-E) on A2780 and HO-8910 cells was 147. 9 μg· ml-1 and 166. 0 μg· ml-1, respectively. Smilax china L. extracts had the inhibition against both A278 and HO-8910PM ovarian cells in a dose-and time-dependent manner. Conclusion:The inhibitory activity of SCR-B against ovarian cancer cells is stronger than that of SCR-E, and SCR-B has stronger inhibition against A2780 cells than against HO-8910 cells. SCR-B has better inhibition against ovarian cancer cells.

Analysis of Three Treatment Regimens and Pharmaceutical Care in One Patient with Lipoprotein Glomeru-lopathy / 中国药师

Objective:To provide reference for the treatment of lipoprotein glomerulopathy and to investigate the participation of clinical pharmacists in the whole treatment course. Methods: Three different treatment regimens, including immunosuppressive thera-py, dual plasma filtration therapy and lipid-lowering combined with reducing urinary protein therapy was respectively adopted for one patient with lipoprotein glomerulopathy, and the efficacy was evaluated. Clinical pharmacists assisted physicians in deciding treatment regimen, performed pharmaceutical care, adjusted medication and analyzed the prognosis of the patient during the follow-up. Results:1. Immunosuppressive therapy was ineffective for the patient;2. The dual filtration acted quickly, while the expense was high and the disease was easy to relapse;3. The third therapy was relatively safer and more economical with long-term effect. Conclusion:Combi-nation therapy of lowering lipid and reducing urinary protein is the most suitable treatment regimen for the patient with lipoprotein glo-merulopathy. Clinical pharmacists play an important role in the whole course of treatment to assist physicians in obtaining the maximum benefit of patients.

Application and Practice of Information Technology in Hospital Pharmacy Overall Management / 中国药师

Objective:To introduce the application and practice of information technology in the pharmacy management of our hos-pital in order to provide reference for fine hospital management. Methods: The difficulties and application experience of information technology in the practice of hospital storeroom, pharmacy and medication management were summarized and analyzed. Results: The introduction of information and automation technology was beneficial to the improvement of work efficiency, prevention of medication er-rors, reduction of the incidence of clinical irrational drug use and improvement of patient treatment service quality. Conclusion:Imple-menting information-based pharmacy management is not only a new idea and method in hospital pharmacy development, but also the in-evitable tendency of the times.

Development of a killed but metabolically active anthracis vaccine candidate strain / 生物工程学报

Anthrax is a zoonosis caused by Bacillus anthracis, which seriously affects human health. In recent years, a special phenomenon is found that the metabolic active of a bacterium remains after it is killed. To development of a KBMA (killed but metabolically active) Bacillus anthracis vaccine candidate strain, a plasmid pMAD and a recombinase system Cre-loxP were used to knockout the uvrAB gene of B. anthracis AP422 which lacks both of two plasmids pXO1 and pXO2. The results of PCR and RT-PCR shows that uvrAB genes were deleted from B. anthracis AP422 chromosome successfully. The constructed B. anthracis AP422deltauvrAB was inactivated by photochemical treatment (PCT) including an exposure in a long-wave-length ultraviolet (UVA) light and a treatment of 8-Methoxypsoralen (8-MOP), then the metabolic activity were detected by the method of MTS. The results showed that the killed B. anthracis AP422deltauvrAB maintained a highly metabolic activity for at least 4 hours, showing a state of KBMA. The KBMA strain of B. anthracis AP422deltauvrAB provides the prospective vaccine candidate strain for anthrax.

A study of some key techniques of digitized virtual hand / 中华显微外科杂志

@#Objective To reconstruct anatomical structures and establish visible model of the hand and evaluate some key techniques of digitized virtual hand. Methods Three hands were scan and then perfused by self-curing denture acylic and cinnabar. With the datum from CT-scan of the specimen of perfused hand (cryopreserved 4-24 h), such anatomical structures as contour, bone, artery, extensor tendon, flexor tendon and nerve of hand were constructed by software of Mimics 10.01 and measured. Results The visible hand model based on anatomical structures was established and main anatomical structures were exactly showed. Each structure was displayed by the multiform solitude or combination. Vessel lumens was displayed hollow and fidelity. The hand nerve can the part demonstrate that can earnest reflect the normal human body nerve contour anatomy characteristic. Conclusion The visible hand model can provide 3D morphological data for clinical practice and research, as well as provide digitized model for virtual reality.

The dynamic changes of plasma yon willebrand factor and P-selectin in the finger replanted patients and their clinical significance / 中华检验医学杂志

Objective To explore the dynamic changes of von willebrand factor(VWF)and Pseleetin in the finger-replanted patients,and the relationship between the prognosis of the surgery and hypercoagulability.Methods From December 2004 to December 2006,eishty finger-replanted patients were recruited to our study.with 40 healthy volunteers as controls.Plasma VWF and P-selectin were detected by enzyme-linked immunosorbent assay(EUSA)in both controls and patients before or after replantation.Results The VWF and P-selectin levels had significant differences between the replantations and controls(F=14.76,11.76,P＜0.01).The VWF levels in the patients of 1,4,8,16 hours after replantation were(1 715±493),(1 396±549),(1 266±504),(1 163±436)U/L respectively,all markedly higher than the controls(P＜0.01).The P-selectin levels in patients of 1,4,8,16,24 hours after operation were(14.7±2.6),(12.5±3.0),(11.8±3.2),(11.1±3.0)、(10.5±2.6)μg/L,significanfly higher than the controls(P＜0.01).The VWF levels in patients of pre-replantion and the 1,4,8,16,24,48,72 hours after replantation were(854±209),(1 535±389),(1 177±407),(1 040±283),(958±216),(829±193),(777±151),(713±137)U/L in successful group,and were(1 202±164),(2 333±243),(2 146±161),(2 039±244),(1 865±170),(1 645±283),(1 427±331),(1 188±262)U/L in unsuccessful groups.They were all significantly different at the same test-time points between two groups(t=4.44,5.12,6.10,8.43,10.17,8.85,5.10.4.61,P＜0.05).The P-selectin levels in patients of 1,4,8,16,24,48,72 hours after replantation were(13.9±2.5),(11.2±2.0),(10.2±1.6),(9.6±1.2),(9.2±0.9),(9.5±0.6),(9.3±0.4)μg/L in successful group,and(17.2±1.0),(16.9±1.0),(17.0±1.3),(16.1±1.1),(14.9±1.5),(13.8±1.4),(12.8±1.2)μg/L in unsuccessful group.Significant difference existed at the same testtime points between two groups again(t=5.22.9.91,10.35,12.79,9.46.9.45,9.33,P＜0.01).After replantation,both VWF and P-selectin were rapidly elevated and went to the summit 4 hours later,then declined to pre-replantation level about 24 to 48 hours later after replantation.Conclusions VWF and P-selectin were associated with the hypercoagulability.Dynamic monitoring VWF and p-selectin may be useful in determining the existence of hypercoagulability and the therapy of anti-coagulability.