ObjectiveTo reveal the active substances and mechanisms of modified Qing'e formula （MQEF） in delaying skin photoaging by ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry （UPLC-Q-TOF-MS），network pharmacology， and cell experiments. MethodsUPLC-Q-TOF-MS and a literature review were employed to analyze the transdermally absorbed components in mice after the topical application of MQEF. The potential targets of MQEF in treating skin photoaging were retrieved from databases.The compound-potential target network and protein-protein interaction network were constructed to screen the key components and core targets. A photoaging cell model was established by irradiating HaCaT cells with medium-wave ultraviolet B （UVB）. The safe doses of bakuchiol （BAK） and salvianolic acid B （SAB） for treating HaCaT cells and the effects of BAK and SAB on the viability of cells exposed to UVB irradiation were determined by the cell counting kit-8 （CCK-8） method.The reactive oxygen species （ROS） fluorescent probe was used to measure the ROS production in the cells treated with BAK and SAB.The expression levels of genes related to oxidative stress，inflammation，collagen metabolism，and circadian rhythm clock were measured by Real-time PCR. ResultsA total of 24 transdermally absorbed components of MQEF were identified，which acted on 367 potential targets，and 417 targets related to skin photoaging were screened out，among which 47 common targets were predicted as the targets of MQEF in treating skin photoaging. MQEF exerted the anti-photoaging effect via key components such as BAK and SAB，which acted on core proteins such as serine/threonine kinase 1 （Akt1） and mitogen-activated protein kinase 3 （MAPK3） and intervened in core pathways such as the tumor necrosis factor （TNF） and phosphatidylinositol-3-kinase （PI3K）/protein kinase B （Akt） signaling pathways.Compared with the model group，the administration of BAK and SAB increased the survival rate of HaCaT cells （P<0.01），down-regulated the mRNA levels of cyclooxygenase-2 （COX-2），interleukin-6 （IL-6），tumor necrosis factor-α （TNF-α），matrix metalloproteinase-1 （MMP-1），and matrix metalloproteinase-9 （MMP-9） （P<0.01），and up-regulated the mRNA levels of heme oxygenase-1 （HO-1） and NAD（P）H quinone dehydrogenase 1 （NQO-1） （P<0.05，P<0.01） in photoaged HaCaT cells.In addition，it eliminated excess ROS production induced by UVB and up-regulated the mRNA levels of brain and muscle ARNT-like 1 （BMAL1） and circadian locomotor output cycles kaput （CLOCK） associated with circadian clock （P<0.05，P<0.01）. ConclusionMQEF delays skin photoaging through the coordinated effects of various components，multiple targets，and diverse pathways.The key components BAK and SAB in MQEF exhibit anti-photoaging properties，which involve inhibiting oxidative stress，preventing collagen degradation，mitigating inflammation，and maintaining normal skin circadian rhythms by regulating clock gene expression.

OBJECTIVE To establish the fingerprint of Pinghuo tea standard decoction and a method for determination of multi-component to clarify the transfer relationship of quantities and quality from pieces and standard decoction. METHODS Fifteen batches of Pinghuo tea standard decoction were prepared and the extract rate was determined； the fingerprint of the preparation was established by using high-performance liquid chromatography（HPLC）； the similarity evaluation and the determination of common peaks were performed， and chemometric analysis was performed； the same method was used to determine the content of indicator components and the transfer rate was calculated. The chromatographic column was Venusil C18 column with mobile phase consisted of acetonitrile-0.1% phosphoric acid solution （gradient elution）； the column temperature was 30 ℃， and the detection wavelengths were 238 nm （0-37 min， 85-102 min） and 330 nm （37-85 min） at a flow rate of 1.0 mL/min with an injection volume of 10 μL. RESULTS The similarity of HPLC fingerprints for 15 batches of Pinghuo tea standard decoction was not lower than 0.968. A total of 24 common peaks were calibrated and 9 peaks were recognized， which were as follows neochlorogenic acid （peak 3）， chlorogenic acid （peak 6）， geniposide （peak 9）， glycyrrhizin （peak 10）， galuteolin （peak 11）， isochlorogenic acid A （peak 14）， luteolin （peak 21）， kaempferol （peak 23） and glycyrrhizic acid （peak 24）. Cluster analysis， principal component analysis and orthogonal partial least squares discriminant analysis showed consistent results， all of which could classify the 15 batches of samples into three categories. The linear range of indicator components in 15 batches of Pinghuo tea standard decoction， such as geniposide， luteolin， isochlorogenic acid A， glycyrrhizin， and glycyrrhizic acid， were 0.020 580-0.411 600， 0.001 617-0.080 850， 0.006 076-0.607 600， 0.005 125-0.071 740， and 0.017 288-0.432 200 mg/mL， respectively； RSDs of precision， repeatability， stability and recovery rate tests were all not higher than 4% （n＝6）. The mass fractions ranged 3.227 9-10.002 2， 0.297 4-0.554 6， 3.350 1-6.159 6， 0.720 6-1.073 3， 2.003 1-3.030 1 mg/g； transfer rates from the pieces and standard decoction were 19.762 8%-35.840 5%， 12.123 3%-21.254 0%， 46.097 2%-82.869 4%， 58.708 8%-91.629 6%， 39.114 3%-63.710 6%. The transfer rates of the extract from 15 batches of Pinghuo tea standard decoction ranged from 61.15%-84.68%. CONCLUSIONS Established HPLC fingerprint and content determination methods in this study are simple and accurate， which can provide reference for the quantitative value transfer study， quality control， clinical application and the development of subsequent formulations of Pinghuo tea standard decoction.

Objective To investigate the effects of long noncoding RNA(lncRNA)-NRON on apoptosis following myocardial infarc-tion(MI)in mice.Methods The C57BL/6 mice were randomly divided into four groups:sham operation(Sham)group,MI group,MI combined with lncRNA-NRON interference lentivirus(MI+shNRON)group,and MI combined with the negative control(NC)lentivirus(MI+NC)group.The expression of lncRNA-NRON was detected using real-time PCR.In addition,the pathology of the myocardial tissue injury was analyzed using HE staining,the myocardial infarction size was examined using TTC staining,and the extent of apoptosis was assessed using the TUNEL assay,respectively.The RPISeq database was used to predict the probability of interaction between lncR-NA-NRON and the voltage-dependent anionic channel protein(VDAC).The effect of lncRNA-NRON on the expression of VDAC protein was detected using Western blotting.Results The lncRNA-NRON expression was significantly increased in the MI group,and the tar-geted knockdown of lncRNA-NRON resulted in alleviation of the pathological myocardial tissue injury,reduction in the myocardial infarc-tion area,and inhibition of apoptosis.The probability of interaction between lncRNA-NRON and VDAC reached 0.9,indicating a high probability of their association.Additionally,lncRNA-NRON could regulate the protein expression of VDAC.Conclusion Knockdown of lncRNA-NRON could reduce the occurrence of myocardial injury following myocardial infarction.This effect may be attributable to a spe-cific mechanism wherein lncRNA-NRON affects the process of apoptosis by binding to VDAC,consequently suppressing its expression.

ObjectiveTaking Achyranthis Bidentatae Radix（ABR） from different origins as samples， to quantitatively analyze the chemical composition and chromaticity of ABR with different processing degrees， and clarify the correlation and change law between color and composition in the processing process of ABR， so as to provide reference for the quality evaluation of processed products of ABR. MethodThe colorimeter is used to measure the chromaticity values of three kinds of processing degrees of ABR in different origins to show the color value change trend during the processing process， and the color parameters of wine-processed and salt-processed products of ABR with different processing degrees were analyzed by principal component analysis（PCA）， orthogonal partial least squares-discriminant analysis（OPLS-DA） and other analysis methods. The contents of eight representative components of ABR were measured by high performance liquid chromatography（HPLC）， the correlation between chromaticity and each representative component was analyzed by Pearson correlation analysis， and the applicability of the selected eight representative components was further verified by Fisher linear discriminant analysis， and the wine-processed and salt-processed products of ABR with different processing degrees were grouped according to the degree of processing， and 48 samples of wine-processed and salt-processed products with different processing degrees were used as training samples. Taking the contents of 5-hydroxymethylfurfural， polypodine B， β-ecdysterone， 25R-inokosterone， 25S-inokosterone， ginsenoside Ro， chikusetsusaponin Ⅳa and polysaccharides as variables， the discriminant function was established respectively， and 12 samples of wine-processed and salt-processed products of ABR with different processing degrees were back-tested to verify the discriminant function and test the reliability of the function. ResultPCA and OPLS-DA results showed that ABR samples with different processing degrees were classified into clusters， and the results could significantly distinguish different processed products. During the process of wine and salt processing， the contents of 5-hydroxymethylfurfural， ginsenoside Ro_， and chikusetsusaponin Ⅳa gradually increased with the deepening of the processing degree， while the contents of polypodine B， β-ecdysterone， 25R-inokosterone， 25S-inokosterone and polysaccharides showed a gradual decreasing trend， indicating these 8 components increased and decreased to different degrees in the process of wine and salt processing. The results of Pearson correlation analysis showed that the 5-hydroxymethylfurfural content of the samples with different processing degrees of wine-processed and salt-processed products were negatively correlated with the brightness value（L^*） and the total color difference value（E^*ab）（P<0.01）， and positively correlated with the red-green value（a^*） and the yellow-blue value（b^*）（P<0.01）， and that the content of polypodine B and polysaccharides were positively correlated with L^* and E^*ab（P<0.01）. The discriminant functions of wine-processed and salt-processed products of ABR were established by Fisher linear discriminant analysis， and their accuracy rates in the training samples were 93.75% and 95.83%， respectively. Twelve test samples of wine-processed and salt-processed products with different processing degree were back substitution， and the correct rate was 100%. ConclusionThe trend of composition and color changes of ABR with different processing degrees in different production areas is relatively consistent， and the color value can better distinguish ABR with different processing degrees， and the color of ABR is related to some representative components in the processing process， indicating that the color can provide reference for the identification of the processing degree of ABR and the prediction of component content.

BACKGROUND:Resistance to the inflammatory response is an important part of promoting the repair of damaged tissue and improving the local inflammatory response caused by medical bio-implant materials has been a key issue to be addressed in recent years. OBJECTIVE:To summarize the anti-inflammatory effects of common metal ions and related molecular mechanisms to provide some theoretical references for improving the early inflammatory response of hosts caused by bio-implant materials. METHODS:A computer search of the relevant literature in PubMed,Web of Science,CNKI and WanFang databases was conducted using"metal ions,magnesium ion,zinc ion,silver ion,copper ion,inflammation,anti-inflammatory effects,oxidative stress,immunoregulation,signaling pathways"as Chinese and English search terms.Preliminary screening was conducted by reading the titles and abstracts.Finally,80 papers were included for result analysis and summary. RESULTS AND CONCLUSION:(1)Metal ions such as magnesium,zinc,silver and copper have a good anti-inflammatory effect.The strength of this anti-inflammatory effect is strongly correlated with the dose and duration of action.In the future,consideration can be given to controlling the release rate of ions and adjusting the appropriate therapeutic concentration to achieve the best anti-inflammatory effect.(2)Magnesium ions and zinc ions exhibit excellent anti-inflammatory activity,with magnesium ions often being beneficial in anti-inflammatory therapy in the form of compounds such as magnesium sulfate and zinc ions regulating the body's inflammatory response with zinc feed as the main source of zinc supplementation.(3)Silver and copper ions have some anti-inflammatory effects,but are still predominant for their excellent antibacterial activity,mainly in the form of nanoparticles and bio-coatings.(4)Magnesium and zinc metal ions can be combined with natural extracts to form complexes to exert anti-inflammatory effects,and this method has the advantage of being inexpensive and widely available and is a sustainable and green approach,which is worthy of clinical promotion.(5)Metal ions such as magnesium,zinc,silver and copper exert anti-inflammatory effects by reducing host oxidative stress damage,modulating immune cells and inhibiting inflammatory signaling pathways such as nuclear factor-κB,Toll-like receptor,STAT3 and NOD.(6)The molecular mechanism related to the anti-inflammation of metal ions is a complex network,which is not the effect of a single pathway,but should be a combination of multiple signaling pathways.There are still many potential mechanisms that have not yet been explored,and more systematic elucidation of the interconnections between various signaling pathways is needed in the future.

Objective:To discuss the effect of cell division cycle protein 20(CDC20)on the proliferation and cell cycle of endometrial carcinoma(EC)cells,and to clarify its mechanism.Methods:Real-time fluorescence quantitative PCR(RT-qPCR)and Western blotting methods were used to detect the expression levels of CDC20 mRNA and protein in human endometrial stromal T-HESC cell and EC cells(KLE,RL95-2,ZJB-ENC1,and ECC-1 cells).The RL95-2 cells were selected for the subsequent experiments.CDC20 shRNA interference lentivirus was transfected into the RL95-2 cells and the cells were divided into control group,sh-NC group(infected with negative control lentivirus),sh-CDC20 group(infected with CDC20 shRNA interference lentivirus),sh-NC+SM04690 group(infected with negative control lentivirus followed by treatment with 64 nmol·L-1 Wnt/β-catenin signaling pathway inhibitor SM04690 for 48 h),and sh-CDC20+SM04690 group(infected with CDC20 shRNA interference lentivirus followed by treatment with 64 nmol·L-1 SM04690 for 48 h).RT-qPCR and Western blotting methods were used to detect the expression levels of CDC20 mRNA and proteins in the cells in various groups;CCK-8 method was used to detect the proliferation activities of the RL95-2 cells in various groups;BrdU assay was used to detect the percentages of BrdU positive cells in various groups;flow cytometry was used to detect the percentages of the cells at G2/M stage in various groups;Western blotting method was used to detect the expression levels of β-catenin,oncogene c-Myc,and cyclin D1 proteins in the cells in various groups.Results:Compared with T-HESC cells,the expression levels of CDC20 mRNA and protein in the KLE,RL95-2,ZJB-ENC1,and ECC-1 cells were significantly increased(P＜0.05),and the highest expression levels of CDC20 mRNA and protein were observed in RL95-2 cells.Compared with sh-NC group,the proliferation activities and percentages of the BrdU positive cells in sh-CDC20 group and sh-NC+SM04690 group were significantly decreased(P＜0.05),the percentages of the cells at G2/M phase were significantly increased(P＜0.05),and the expression levels of β-catenin,c-Myc,and cyclin D1 proteins were significantly decreased(P＜0.05).Compared with sh-CDC20 group,the proliferation activity and percentage of BrdU positive cells in sh-CDC20+SM04690 group were significantly decreased(P＜0.05),the percentage of the cells at G2/M phase was significantly increased(P＜0.05),and the expression levels of β-catenin,c-Myc,and cyclin D1 proteins in the cells were significantly decreased(P＜0.05).Conclusion:CDC20 is highly expressed in the EC cells.Silencing CDC20 may inhibit the cell proliferation by inducing G2/M phase arrest in the RL95-2 cells through the regulation of Wnt/β-catenin signal transduction.

Objective To investigate the relationship between spicy diet and uremic pruritus(UP)in the patients with maintenance haemodialysis(MHD).Methods A total of 403 patients receiving the treat-ment in the blood purification center of this hospital from December 2023 to February 2024 were selected as the study subjects and grouped by the sum of the scores of frequency and degree of pepper intake.The visual analogue rating scale(VAS)was used to conduct the preliminary pruritus score in all patients,and the pa-tients with the score＞0 point conducted the multidimensional evaluation by the 14-item uremic skin pruritus scale.The blood routine and itch-related blood biochemical indexes levels of all patients were measured.Results There were 65 cases in the bland diet group,119 cases in the mild spicy diet group and 219 cases in the spicy diet group,and there was no significant difference in the number of genders between the groups(P＞0.05).There were statistically significant differences in age,dialysis age and lymphocyte count among the groups(P＜0.05).There was no statistically significant difference in the degree of pruritus among the groups(Z=9.301,P=0.157),but it was seen that the proportion of moderate and severe pruritus in the mild spicy diet group and the spicy diet group was decreased,and the proportions of no pruritus and mild pruritus showed the increasing trend.The itching score of the bland diet group was higher than that of the mildly spicy diet group and spicy diet group,and the difference was statistically significant(P＜0.05),but there was no statistically significant difference between the mild spicy diet group and spicy diet group(P＞0.05).There was a statistically significant difference in the itch score of the patients aged 40-60 years in each group(P＜0.05),and there was no statistically significant difference in the itch score between the patients aged＞60 years old and＜40 years old in each group(P＞0.05).There was no statistically significant difference in the itch-related blood biochemical indexes among the groups(P＞0.05).Conclusion The spicy diet may reduce the degree of pruritus in patients with MHD,moreover which is not affected by the age and other factors,and may be associated with lymphocyte level decrease in the patients.

Objective:To evaluate the effect of extracorporeal shock wave on the phosphoproteomics of the spinal cord in rats with diabetic neuralgia.Methods:Thirty-six healthy male SPF-grade Sprague-Dawley rats, aged 2 months, weighing 200-250 g, were divided into 3 groups ( n=12 each) using the random number table method: control group (group C), diabetic neuralgia group (group D), and extracorporeal shock wave + diabetic neuralgia group (group E). The rats were continuously fed a common diet in group C, while the rats were fed a high-sugar and high-fat diet for 8 weeks in D and E groups. Streptozotocin 35 mg/kg was intraperitoneally injected, and the successful induction of diabetic neuralgia was defined as the blood glucose >14.6 mmol/L and the mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) ≤85% of baseline values. Group E received extracorporeal shock wave treatment after developing the model, with 1, 000 shocks per session at a frequency of 10 Hz and an energy of 1.0 bar, once per week for a total of 4 sessions. The MWT and TWL were measured before developing the model (T 0) and at 1, 2, 3 and 4 weeks after developing the model (T 1-T 4). After the last extracorporeal shock wave treatment, the rats were anesthetized and sacrificed, and lumbar spinal cord tissues were obtained for proteomic analysis and for detection of the expression of glial fibrillary acidic protein (GFAP), interleukin-1beta (IL-1β), and tumor necrosis factor-alpha (TNF-α) (by immunohistochemistry). Results:Compared with group C, the MWT and TWL were significantly decreased at T 1-T 4 in D and E groups ( P<0.05). Compared with group D, the MWT and TWL were significantly increased at T 1-T 4 in group E ( P<0.05). The results of phosphoproteomics screening revealed 284 differentially phosphorylated proteins in D and C groups, 282 in E and C groups, and 303 in E and D groups ( P<0.05). The results of immunohistochemistry showed that the expression of GFAP, IL-1β and TNF-α was significantly up-regulated in group D compared with group C ( P<0.05); the expression of GFAP, IL-1β and TNF-α was significantly down-regulated in group E compared with group D ( P<0.05). Conclusions:The mechanism by which extracorporeal shock wave alleviates diabetic neuralgia is related to inhibition of astrocyte activation and excessive phosphorylation of mGluR5 in rats.

Objective:To explore the training needs for clinical core competence of master of nursing specialist (MNS) from the perspective of supervisors, providing reference for the development of future MNS clinical practice training programs.Methods:Using phenomenological research methods from qualitative research, purposive sampling was used to select 10 MNS supervisors from Jilin Province, Heilongjiang Province, Sichuan Province, and Zhejiang Province as research subjects for semi-structured interviews from May to July 2023. Colaizzi 7-step analysis method was used to extract themes.Results:Six themes were extracted, including the need to strengthen MNS ideological and political education, differences in clinical training needs and ability goals between fresh and non-fresh students, the need to enhance MNS clinical practice ability, clinical research should be a key training content, thinking ability training should be integrated throughout the entire clinical training process, and achievement transformation.Conclusions:Relevant training institutions should attach importance to the cultivation of MNS ideological and political education, specialized practical abilities, thinking abilities, clinical research, and achievement transformation abilities, distinguish the tendency of cultivating fresh and non-fresh students, and actively set up relevant courses to improve students' core competence and job competitiveness, and cultivate nursing expert talents that truly meet the needs of clinical development.

Objective:To develop a joint clinical practice teaching and assessment program tailored to the clinical training needs of master of nursing specialist (MNS) postgraduates which focuses on core competency requirements.Methods:Totally 10 MNS postgraduate supervisors were selected by convenience sampling for semi-structured interviews between May and July 2023. Subsequently, a Delphi method was employed with 22 MNS postgraduate supervisors over two rounds of consultations from October to December 2023.Results:A total of 22 experts participated in the Delphi consultations, with an effective response rate of 100.00% (22/22) in both rounds. The expert authority coefficients were 0.822 and 0.833, respectively, for the two rounds. The Kendall's W for various levels of indicators ranged from 0.097 to 0.243 and 0.159 to 0.256, respectively ( P<0.01). The final training program included five primary indicators, 10 secondary indicators, and 26 tertiary indicators. Conclusions:The development process for the joint clinical practice teaching and assessment program for MNS postgraduates is scientific and reliable. The program can serve as a reference for the clinical practice training of MNS postgraduates.