Objective To determine the likelihood of G-protein coupled receptor 56 (GPR56 ) induces axonal development and myelination in the corpus callosum of mouse brain.Methods A total of 64 Gpr56 +/-and Gpr56 -/-mice were selected and randomly divided into two groups:Gpr56 +/-group (n=32)and Gpr56 -/-group (n=32).According to number of days after birth,each group was further divided into 4 subgroups including P7d,P14d,P21d and P28d subgroups.Levels of neurofilament-200 (NF -200)and proteolipid protein (PLP ) of myelin basic protein in corpus callosum were measured with immunohistochemistry staining and Western blot in P7d、P14d、P21d、P28d Gpr56 +/- and Gpr56 -/-mice.Gpr56 +/-and Gpr56 -/-neurons were cultured using P1 d Gpr56 +/-and Gpr56 -/-mouse brain.The lengths of Gpr56 +/- and Gpr56 -/-neuronal axon were measured and compared with Image J software. Axonal myelination in the corpus callosum of mouse brain in each group was observed under electronic microscopy and the axonal diameters between subgroups were compared.Results The levels of NF-200 and PLP in the corpus callosum in P7d、P14d、P21d、P28d Gpr56 -/-mice decreased significantly compared with Gpr56 +/- mice.The length of Gpr56 -/-neuronal axon was shortened compared with Gpr56 +/-neuronal axon.The number of myelinated axons was obviously reduced in the corpus callosum in P28d Gpr56 -/-mice.The diameter of axon in the corpus callosum of P28d Gpr56 +/-mouse is longer than that of P28d Gpr56 -/-mouse. Conclusions GPR56 may be involved in axonal development and myelination in the corpus callosum of mouse brain.

Objective To investigate the clinical effect of the blood transfusion with equal ratio component in severe multiple in‐juries with acute traumatic coagulopathy(ATC) .Methods Thirty‐eight patients who had severe multiple injuries with ATC were divided randomly into control group and treatment group .Control group was treated with the different ratio packed red blood cells (PRBC)and fresh frozen plasma(FFP) ,while treatment group received the equal ratio PRBC and FFP .Hemoglobin(HB) ,pro‐thrombin time(PT) ,international normalized ratio(INR) ,fibrinogen(FIB)were measured on the 1st ,2nd ,3rd day after admission . The total amount of PRBC during these 3 days ,the days of hospitalization in ICU ,the corrected rate of shock ,the 28‐day mortality were compared between groups .Results Compared with the control group ,the levels of PT ,INR and FIB of treatment group on the 2nd ,3rd day after admission were better(P<0 .05) .The total amount of PRBC[(18 .5 ± 6 .3)U]during these 3 days ,the days of hospitalization in ICU [(5 .9 ± 4 .3)d] in treatment group were less than those in the control group [(25 .9 ± 7 .8)U ,(10 .5 ± 7 .6)d] (P<0 .05) ,while the corrected rate of shock(85 .0% )in treatment group was higher than that of the control group(44 .4% ) .The 28‐day mortality(10 .0% )in treatment group was lower than that of the control group(27 .8% )(P<0 .05) .Conclusion The blood transfusion with equal ratio component in severe multiple injuries with ATC could not only improve blood clotting index ,reduce the total amount of PRBC and the time in ICU ,but also increase the corrected rate of shock and decrease the 28‐day mortality .

Objective To explore the influence of combination of Chinese traditional and western medicine continuing nursing care on treatment outcome and quality of life of patients with chronic urticaria.Methods 96 confirmed chronic urticaria patients were selected and divided into the control group and the observation group with 48 patients in each group according to random digit table.The control group was given with routine nursing mode.The observation group received combination of Chinese traditional and western medicine continuing nursing care.The treatment lasted for 12 months.Treatment effect and Dermatology Life Qudity Index (DLQI) evaluation were executed at the end of the 3rd,6th and 12th months.The relapse was inquired 2 months after the intervention by follow-up.Results The total effective rates in the control group and the observation group at the end of the 3rd,6th and 12th months were 75.6％ (34/45),80.0％ (36/45),82.2％ (37/45) and 87.0％ (40/46),91.3％ (42/46),93.5％ (43/46),the results showed significant difference,P ＜ 0.05.DLQI scores at the end of the 3rd,6th and 12th months in the control group and the observation group were (7.82±1.95),(7.04±1.58),(6.56±0.88) scores and (6.85±1.56),(5.71±1.03),(3.42±0.78) scores,the differences were significant,P＜0.05.The relapse interval time was (24.75±5.07) days and (38.20±7.22) days,the difference was statistically significant (P＜0.01).Conclusions Combination of Chinese traditional and western medicine continuing nursing care can significantly improve treatment outcome of chronic urticaria,reduce relapse rate,increase quality of life for patients with chronic urticaria,and it is better than routine nursing care and is worthy of being popularized.

Objective To evaluate (1,3)-β-D-glucan (BG) assay as an aid for invasive fungal infection (IFI) diagnosis in severe pneumonia patients (diagnosis followed 2007 American Thoracic Society (ATS) and Infectious Disease Society of America (IDSA) severe pneumonia standard).Methods BG antigenemia was measured by BG Assay Box.IFIs was classified according to the blood fungal laboratory reports.Results 558 patients (185 females,373 males,mean age 64.7) were included.41 patients were proven to be fungal infected to be classified in exposure group.BG assay mean value in exposure group and unexposure group were (568.53 ±796.57) pg/mL,(51.4 ±63.27) pg/mL,respectively.Patients in the exposure group had significantly higher BG assay value than patients in the unexposure group (P ＜0.05).For the cutoff 100 pg/mL recommended by manufacturer,the sensitivity,specificity,positive predict value and negative predict value of the BG assay were 92.7％,92.5％,49.4％ and 0.6％,respectively.Conclusion BG assay has positive clinical value in invasive fungal infection diagnosis in severe pneumonia patients.

Objective To get a molluscicide from Reineckea carnea which is effective on Oncomelania hupensis but has low poison on fish. Methods Methyl soaking, column chromatography and HPLC were used for isolation of molluscicidal component from Reineckea carnea. Results The snail mortality with Reineckea carnea powder was 86.0% for 72 h immersion and 100.0% for 120 h at the concentration of 17.5 mg/L, but the fish mortality was 0 at the concentration of 130 mg/L, indicating that Reineckea carnea had different effects on the two kinds of animals . The fraction A was obtained from Reineckea carnea by methyl immersion, column chromatography. The snail mortality with A was 84.4% for 144 h at the concentration of 10 mg/L, indicating that A had high molluscicidal effect on Oncomelania hupensis. After A being isolated by HPLC, 99.98% RC-Ⅰ was obtained from it . RC-Ⅰ was determined by API2000 LC/MS and other spectrum, and it was deduced to be one of steroidal glycosides. Conclusion Reineckea carnea contains a high effective molluscicidal component.

Objective To explore the advantages and disadvantages of helicopter emergency medical services of South China in the long-distance transport for critical patients.Methods A total of 30 patients who received helicopter emergency medical services by Guangdong Generral Hospital from August 2004 to December 2014 were selected as the observation group,and the other 30 patients with similar conditions who received ground emergency medical services were selected as the control group.To analyses the difference between the two groups in the disease,transport distance,transportation time,costs and compliction by χ2-test,t-test and nonparametric test according types of data.Results There were significantly difference between two groups in transport distances (km) [578.0 (313.0,707.5)vs.214.5 (101.5,313.5),P <0.05],set-up time (min) [95.7 (56.7,133.4)vs.10.7 (6.8,15.7),P <0.05],transportation time (min) [112.3 (64.3,152.4) vs.146.8 (67.8,217.5),P <0.05],costs (yuan/h) [14378.5 (9887.0,16348.5)vs.557.0 (356.5, 787.5),P <0.05]and the distance/total time value [2.8 (1.3,4.8)vs.1.4 (0.8,2.8),P <0.05]. There was no significantly difference in the incidence of complications between two groups (χ2 =0.058,P >0.05).Conclusions Helicopter emergency medical services could shorten the transportation time of critical patients on long distance transportation,and improve the efficiency of first-aid.However,there were many disadvantages that need to be improved in the helicopter emergency medical service of China.

Due to the improvement of infant survival rates,Candidas have been proved to be the third most common pathogen of late-onset sepsis in NICU,and invasive fungal infection of high-risk infants is in-creasing attention. As the diagnosis is difficult,treatment is often delayed,high mortality and severe disability are also caused,it's becoming a research hot spot to assess whether antifungal prophylaxis is beneficial. Now a number of studies have been performed to discuss the prophylactic role of fluconazole and nystatin,but has not yet reached a consensus. This review described the influence of chemoprophylaxis on fungal infection, colonization and drug resistance.

Objective: Systematic review and analyze the domestic and foreign research literatures on interventional measures for pathological breast engorgement, and explore the differences between intervention measures for pathological breast engorgement at home and abroad, and provide reference and new ideas for further optimization of breast intervention measures in China. Methods: Scientifically search the domestic and foreign research literatures on pathological breast engorgement intervention measures, import the search data into Citespace and VOS viewer to achieve co-occurrence analysis, and then systematically analyze the literature at the core node in the co-occurrence map. Results: A total of 384 articles (267 foreign ones; 117 articles in China) were included in this study. The main themes of foreign research hotspots are: female, adult, first child, lymphedema, inflammation, breast basic diseases, breast tumors and time-influencing factors are mainly concerned with the exploration of high-risk influencing factors and early intervention of breast-related tumor diseases. Domestic research hotspots mainly focus on nursing interventions as the main intervention measures and effects evaluation. The content analysis in the core literature shows that foreign studies are mainly based on cohort studies, including the topical application of progesterone, psychological intervention, and breastfeeding time factors. Domestic research is mainly based on experimental research, mainly using massage techniques. Improvement, comparison of different external dressings as the main intervention. Conclusions At present, both domestic and foreign research have carried out active exploration and comparative research on the external materials and achieved certain results. The current study of postpartum breast engorgement in China needs to be further explored based on large samples and cohort studies.