OBJECTIVE:To establish a method for simultaneous determination of chlorogenic acid,geniposide,gentiopicro-side,baicalin,berberine hydrochloride and chrysophanol in Longze xiongdan capsule. METHODS:HPLC method was adopted. The separation was performed on Dikma Platisil ODS column with mobile phase consisting of acetonitrile-0.1% phosphoric acid so-lution(gradient elution)at the flow rate of 1.0 mL/min. The detection wavelength were set at 254 nm for geniposide,gentiopicro-side,baicalin,berberine hydrochloride and chrysophanol and 327 nm for chlorogenic acid. The column temperature was 30 ℃. RE-SUITS:Linear ranges of chlorogenic acid,geniposide,gentiopicroside,baicalin,berberine hydrochloride and chrysophanol were 0.0082-0.164 μg (r=0.9998),0.027-0.540 μg(r=0.9997),0.02525-0.505 μg(r=0.9998),0.046-0.920 μg(r=0.9997), 0.059-1.180 μg(r=0.9995),0.00805-0.161 μg(r=0.9994),respectively;the limits of quantitation were 0.61,0.59,0.87,0.51, 0.92,0.65 ng,and the limits of detection were 1.67,1.73,1.96,1.82,2.31,1.87 ng. RSDs of precision,stability and reproduc-ibility tests were lower than 2.0%;recoveries were 95.34%-98.27%(RSD=1.2%,n=9),98.18%-101.92%(RSD=1.4%,n=9), 97.36% -101.09%(RSD=1.0% ,n=9),95.24% -98.93%(RSD=1.3% ,n=9), 95.76% -99.34%(RSD=1.5% ,n=9), 95.00%-98.75%(RSD=1.4%,n=9),respectively. CONCLUSIONS:The method is simple,accurate,reproducible and suitable for simultaneous determination of chlorogenic acid,geniposide,gentiopicroside,baicalin,berberine hydrochloride,chrysophanol in Longze xiongdan capsule.

OBJECTIVE:To estabish a RP-HPLC method for the content determination of forsythin of Yinqiao jiedu pills.METHODS:The determination was performed using SHIM-PACK VP-ODS column(150 mm ? 4.6 mm,5 ?m) with column temperature at 30 ℃.The mobile phase was acetonitril-water(25∶75) with flow rate at 1.0 mL?min-1.The detective wavelength was set at 277 nm.RESULTS:The linear range of forsythin was 0.453～3.481 ?g(r=0.999 8).The mean recovery was 99.50%(RSD=1.15%,n=6).CONCLUSION:The method was simple,rapid,accurate and suitable for the quality control of Yinqiao jiedu pills.

Objective To improve hand hygiene compliance among health care workers(HCWs)through continu-ous quality improvement,and effectively reduce the incidence of healthcare-associated infection(HAI).Methods Continuous quality improvement was performed by adopting plan-do-check-action(PDCA)cycle,all HCWs were trained,hand hygiene was stressed,periodical and random checking was conducted.Results After the implementa-tion of PDCA cycle,the acknowledge rate of hand hygiene enhanced from 48.00% to 63.99%;hand hygiene com-pliance rate enhanced from 65.11% to 82.40%,the difference were both significant(χ2=12.75,259.65,respective-ly,both P<0.05).The daily consumption of instant hand antiseptic per 1 000 bed day increased obviously,which was 2.95-fold of pre-implementation.Conclusion Continuous quality improvement through PDCA cycle can effec-tively improve hand hygiene compliance rate of HCWs.

OBJECTIVE: To optimize reflux extraction technology of total flavonoids from the roots and stems of Angelica sinensis. METHODS: The reflux extraction technology of total flavonoids from the roots and stems of A. sinensis was optimized by Box-Behnken design-response methodology based on single factor test using volume fraction of extraction solvent ethanol, solide-liquid ration, extraction time, extraction times as investigation factors, the content of total flavonoids in extract as evaluation index. RESULTS: The optimal extraction technology of total flavonoids from the roots and stems of A. sinensis was that volume fractions of ethanol were 70％ and 50％; solid-liquid ratios were 1: 40 and 1: 30; extraction time were 1. 3 h and 1. 7 h; The number of extraction times is two times. In verification test, the contents of total flavonoids were 7. 253 6, 25. 144 1 mg/g (RSD= 1. 57％, 1. 49％, n = 3); relative errors of those to predicted value (6. 942 8, 25. 703 5 mg/g) were 4. 28％, 2. 24％. CONCLUSIONS: Optimized extraction technology for total flavonoids from the roots and stems of A. sinensis is simple, reproducible and predictable.

Concerns have been raised about the reporting quality in nutritional epidemiology.Therefore,strengthening the reporting of observational studies in epidemiology-nutritional epidemiology (STROBE-nut) has been proposed by extending the STROBE statement to include additional recommendations on issues related to nutritional epidemiology and dietary assessment,aiming to provide more specific guidelines on how to report observational research in the field.This paper presents a brief introduction to STROBE-nut and also an explanation of the key points in the additional items,with an example illustrating the application of the checklist.

Objective:To investigate the current management of nosocomial infection at medical institutions of all levels in Changzhou, so as to provide basis for standardizing nosocomial infections control of hospitals within a medical alliance.Methods:An electronic questionnaire was customized for online survey of 91 hospitals affiliated to eight regional medical alliances in Changzhou city in March 2019. The survey covered such aspects as general conditions of the hospital, profile of nosocomial infection control administrators and other staffing, supervision of hospital nosocomial infection programs, and training needs, as well as outstanding problems and suggestions.Frequency number and percentage represent enumeration data, and χ2 test was used to analyze the in-group differences of medical institutions of three levels. Results:Tertiary public hospitals were superior to the secondary and primary hospitals in organizational structure, professional staffing and target monitoring, with the differences of statistical significance( P<0.05). The most urgent training needs of medical institutions at all levels were knowledge in determination and reporting of infectious diseases/nosocomial infection/infection outbreaks; top imperatives and recommendations were development of operation rules for primary medical institutions and standardization of workflows. Conclusions:Staff of primary medical institutions need capacity building in nosocomial infection control; primary hospitals are equipped with incomplete nosocomial infection control information platform; key departments in general lack homogenous management. Tertiary hospitals are encouraged to play leadership in medical alliances in achieving standardized, homogenous and informationized nosocomial infection control within the medical alliances.

Objective To predict the core targets and action pathways of Hedysari Radix based on UPLC-MS/MS and network pharmacology methods,and to verify the results of network pharmacology by molecular docking and molecular dynamics techniques.This article aims to investigate immune regulation mechanism of effective components absorbed into blood from Hedysari Radix.Methods Qualitative quantification of effective components absorbed into blood from Hedysari Radix were operated by using UPLC-MS/MS technique.The corresponding targets of effective components absorbed into blood from Hedysari Radix were screened by TCMSP and HERB databases.Targets of immune-related disease were obtained through DisGeNET,OMIM,TTD,and MalaCards databases.The network of"components absorbed into blood from Hedysari Radix-immune-related diseases"was then constructed.GO and KEGG enrichment analysis and mapped the PPI network were performed.Molecular docking and molecular dynamics techniques were applied for validation.Results A total of 8 prototype components absorbed into blood,synergistically acting on 101 targets,were identified by UPLC-MS/MS.They mediated 538 biological processes including immune response,positive regulation of gene expression,receptor binding,and cytokine activity.Meanuhile,116 signaling pathways,such as HIF-1,Toll-like receptor,JAK-STAT,T cell receptor,PI3K-Akt,and FoxO etc.were involved.The core targets were MAPK14,PTGS2,MMP9,PPARG,CCND1,etc..The results of molecular docking showed that formononetin and calycosin had strong docking binding activity with MAPK14.And molecular dynamics simulations further demonstrated that the binding between MAPK14 and formononetin or calycosin had good structural stability and binding affinity.Conclusion The results of serum pharmacochemistry,network pharmacology and molecular dynamics were verified to reveal the material basis and mechanism of Hedysari Radix in regulating immunity.The aim of this study is to provide scientific basis for its immunomodulatory mechanism.

Objective:To compare the efficacies of arthroscopic modified Brostr?m procedure combined with or without peroneal tendon debridement in the treatment of chronic lateral ankle instability (CLAI) concomitant with fibular tendinitis.Methods:A retrospective cohort analysis was conducted on the clinical data of 31 patients with CLAI concomitant with fibular tendinitis, who were treated in Beijing Tongren Hospital, Capital Medical University between March 2019 and December 2021. The patients included 17 males and 14 females, aged 16-57 years [(32.8±9.6)years]. The anterior drawer test and talar tilt test were positive in all patients preoperatively. Diagnosis was confirmed by physical examination and MRI, and calcaneofibular ligament rupture was excluded. Eleven patients received arthroscopic modified Brostr?m procedure combined with peroneal tendon debridement (modified Brostr?m procedure+tendon debridement group), and 20 underwent pure arthroscopic modified Brostr?m procedure (modified Brostr?m procedure group). The operation time, intraoperative blood loss and length of hospital stay were documented. The visual analogue score (VAS) in peroneal tendon area was assessed before operation and at postoperative 2, 6 and 12 weeks. The American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score and foot and ankle outcome score (FAOS) were assessed before operation and at postoperative 6 and 12 weeks. The anterior drawer test was performed at the last follow-up. The foot and ankle ability measure (FAAM) score was assessed before operation and at the last follow-up. Postoperative wound healing and complications were also observed.Results:All the patients were followed up for 4-19 months [(11.3±3.5)months]. The operation time was (66.0±4.2)minutes in the modified Brostr?m procedure+tendon debridement group, which was significantly longer than (61.5±3.4)minutes in the modified Brostr?m procedure group ( P<0.05). There was no significant difference in intraoperative blood loss or length of hospital stay between the two groups (all P>0.05). Compared with the preoperation, the value of VAS was significantly lowered, and the values of AOFAS ankle-hindfoot score, FAOS and FAAM score were significantly increased at different postoperative timepoints (all P<0.01). No significant differences in the values of VAS, AOFAS ankle-hindfoot score, FAOS or FAAM score were seen between the two groups before operation (all P>0.05). The value of VAS was 3.0(3.0, 4.0) points in the modified Brostr?m procedure+tendon debridement group, being markedly different from 4.0(4.0, 4.0)points in the modified Brostr?m procedure group at 2 weeks postoperatively ( P<0.05). The value of VAS was 2.0(1.0, 3.0)points in the modified Brostr?m procedure+tendon debridement group, being markedly different from 3.0(2.3, 3.0)points in the modified Brostr?m procedure group at 6 weeks postoperatively ( P<0.05). At 12 weeks postoperatively, there was no significant difference in the value of VAS between the two groups ( P>0.05). There were no significant differences in the values of AOFAS ankle-hindfoot score and FAOS between the two groups at 6 or 12 weeks postoperatively (all P>0.05). The anterior drawer test was negative in all patients at the last follow-up. No significant difference was seen in the value of FAAM score between the two groups at the last follow-up ( P>0.05). All incisions were healed well in the first stage after operation, without the occurrence of joint infection, impaired joint motion, nerve injury or deep vein thrombosis. Conclusions:Arthroscopic modified Brostr?m procedure combined with or without peroneal tendon debridement can both improve the foot function in CLAI patients concomitant with fibular tendinitis. However, the combined treatment allows for early pain relief, without increasing the risk of complications, and can therefore contribute to a faster postoperative recovery.

Malignant tumors are one of the main causes of human death worldwide and pose a serious threat to human health. The current treatment methods are mainly the combination of chemotherapeutics， surgery， radiotherapy， or hormone therapy. The treatment process has limitations such as multidrug resistance， non-selective targeting of cancer cells， and drug toxicity. With the development and application of traditional Chinese medicine （TCM）， Chinese medicine has the characteristics of multi-angle and multi-mechanism coordination and slight toxic and side effects. It can effectively inhibit tumor proliferation， differentiation， and metastasis， and avoid drug resistance， serving as the focus of current tumor treatment research. Hedysari Radix， one of the genuine medicinal materials in Gansu province， is a tonic Chinese medicine with a wide range of pharmacological effects such as anti-inflammation， immune regulation， anti-oxidation， prevention and treatment of diabetic complications. In the majority of the ancient works on herbs of the past dynasties， Hedysari Radix was included under the item of Astragali Radix and used as Astragali Radix. Hedysari Radix is superior to Astragali Radix in enhancing immunity， scavenging free radicals， and resisting liver fibrosis. Studies have found that the effective components of Hedysari Radix have a prominent anti-tumor effect and a significant inhibitory effect on various malignant tumors such as liver cancer， bladder cancer， gastric cancer， breast cancer， and colorectal cancer. They can also combine with clinical anti-cancer drugs to reduce the toxic and side effects of chemotherapy drugs and improve the tolerance of patients during chemotherapy. On the basis of current research， this study summarized the mechanism of Hedysari Radix active components in inducing cell apoptosis， blocking cell cycle， inhibiting tumor cell proliferation， migration， and invasion， regulating micro mRNA （miRNA）， inducing cell autophagy， enhancing immune regulation， as well as reducing toxicity and enhancing efficiency and sensitization with clinical chemotherapeutics， and systematically explained the anti-tumor mechanism of Hedysari Radix active components， aiming to provide a basic reference for the further exploration of the anti-tumor mechanism of Hedysari Radix and the further development and utilization of its effective components.