Objective To establish an effective method for determination of synthetic cannabinoid JWH-122 by the high-performance liquid chromatography (HPLC), which is controled by China’s Regulations on non-clinical narcotic and psychoactive drug. Methods Methanol-deionized water (50%-50%) was used as mobile phase for gradient elution. In addition to the initial concentration in organic phase, gradient steepness, column temperature, flow rate and other chromatographic conditions, the determine wavelengths were tested so as to ifnd out optimal experimental conditions. Linearity range and speciifcity were tested under optimal conditions, and actual samples were used to verify the method established. Results Under the condition of ultraviolet spectrum detection wavelength at 221nm, initial concentration of 70%, organic phase gradient steepness of 0.5%/min, lfow rate at 1.2 ml/min and column temperature of 30℃,excellent linearity of JWH-122 was observed at 0.002mg/mL-0.1mg/mL and the detection limit (S/N≥3) was 0.1μg/mL. The test of actual samples suggested that JWH-122 was able to be well separated from the sample under the optimal conditions. Conclusion Our method has advantages of rapidity, sensitivity, accuracy and excellent separation efifciency, and is capable of the detection of synthetic cannabinoid JWH-122 of the novel “spice” drugs.

Chitosan has natural abundance, unique bioactivity and attractive physicochemical properties. Recent years, the synthesis of chitosan-based metal nanomaterials has attracted increasing attention. The synthesis of metal nanoparticles utilizing biomolecular or organism offers a mild medium, and thus a greater degree of control over the nanoparticles produced, along with higher reproducibility. In particular, preparation of metal nanoparticles based on biomolecular or organism has its unique facility in integrating "minimum feature sizes" into labile biological components to an excellent synergy and bifunctional effect and consequently a more broad application. Herein, we review the new development of chitosan, chitosan-based synthesis of metal nanomaterials, and their application.
Catalysis ; Chitosan ; chemistry ; Metal Nanoparticles ; chemistry ; Oxidation-Reduction

Objective:To explore the effect of "Internet +" canal management led by special disease nurses in home care of patients undergoing percutaneous transhepatic cholangial drainage (PTCD) .Methods:From March 2021 to December 2022, convenience sampling was used to select 120 patients who underwent PTCD and were discharged with drainage tubes at the First Affiliated Hospital of Zhengzhou University. The patients were divided into a control group and an observation group using a random number table method, with 60 cases in each group. The control group adopted the routine home follow-up management after PTCD, and the observation group adopted the"Internet +"canal management led by special disease nurses for home care, with the intervention of three months. This study used the Chronic Disease Self-Management Scale (CDSMS) to evaluate the self-management ability and self-efficacy of two groups of patients, and recorded and compared the incidence of canal-related complications, unplanned readmission rate, and unplanned return visit rate between the two groups.Results:One patient in the control group died, and a total of 119 patients completed the study. The total score of CDSMS, self-management behavior score, and self-efficacy score of the two groups of patients after intervention were higher than those before intervention, and the differences were statistically significant ( P<0.05) . After intervention, the total CDSMS score, self-management behavior score, and self-efficacy score of the observation group were higher than those of the control group, and the differences were statistically significant ( P<0.05) . In the observation group and the control group, the total incidences of canal-related complications were 18.33% (11/60) and 44.07% (26/59) , and the unplanned readmission rates were 6.67% (4/60) and 23.73% (14/59) , and the unplanned return visit rates were 10.00% (6/60) and 35.59% (21/59) , respectively, and the differences were statistically significant ( P<0.05) . Conclusions:The "Internet +"canal management led by special disease nurses can effectively improve the self-management ability and self-efficacy of PTCD patients at home, reduce the incidence of canal-related complications, unplanned readmission rate and return visit rate.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.