OBJECTIVE To clarify the components of volatile oil in branches and leaves of Rhododendron anthopogonoides, Rhododendron capitatum, Rhododendron thymifolium and Rhododendron przewalskii. METHODS The total volatile oil in leaves and branches of these plants were obtained by supercritical CO2 extraction. After that, the chemical composition of the total volatile oil was analyzed and identified by GC-MS, and the contents of different parts and varieties were compared. RESULTS The results showed that the highest oil yield of leaves was Rhododendron thymifolium(6.97%), and the highest oil yield of branches was Rhododendron anthopogonoides(20.53%). Thirty-five, eighty, fifty-eight and forty compounds were detected in the branch oil of Rhododendron anthopogonoides, Rhododendron capitatum, Rhododendron thymifolium and Rhododendron przewalskii respectively, among which Rhododendron capitatum was rich in compounds. Forty-eight, fifty-seven, sixty-two and fifty compounds were detected in the leaf oil, among which the compounds of Rhododendron anthopogonoides were the richest. Among the detected components, squalene(34.92%, 26.90%) was the highest content in the branches and leaves of Rhododendron anthopogonoides. 1-Eicosanol(26.79%) was the highest content in the branch oil of Rhododendron capitatum, and octadecyl acetate(42.32%) was the highest content in the leaf oil. The highest content of bisabola-3,10-diene-2-one(34.66%, 28.20%) was found in the branches and leaves of Rhododendron thymifolium, and 15-oxoETE(38.20%, 40.40%) was the highest content in the branches and leaves of Rhododendron przewalskii. The results showed that the contents of oil in branches and leaves of Rhododendron capitatum were quite different in different parts. In the comparison of different varieties, the compounds with the highest content of four rhododendrons were all different. CONCLUSION According to the difference of the content of active components of different rhododendrons and parts, the appropriate species and parts for purposeful development and utilization should be selected. The research results can provide scientific basis for rational development and utilization of Rhododendron resources.

Objective By observing the effects of"three methods and three points"tuina technique on the expression of interleukin-17F(IL-17F),interleukin-17 receptor C(IL-17RC),activator 1 of nuclear transcription factor-κB(Act1),tumour necrosis factor receptor-associated factor 6(TRAF6)and M1 microglial cell expression in the spinal dorsal horn of rats with mild chronic compressive injury(minor CCI)model,we explored the immediate analgesic mechanism of tuina on peripheral neuropathic pain(pNP).Methods Thirty-six SD rats were divided into the sham group,the model group and the tuina group according to the random number method,twelve rats in each group,and the minor CCI model was replicated by ligating the right sciatic nerve.The rats in the tuina group were subjected to pointing,plucking and kneading at the BL37,BL57 and GB34 points on the affected side using a tuina simulator,while the sham group and the model group were only grasped and restrained,and were intervened for one time.The mechanical pain test and cold plate test were used to evaluate the response of rats to mechanical stimulation and cold stimulation after immediate intervention.The protein expression of IL-17F and TRAF6 in the spinal dorsal horn of rats in each group was detected by Western blotting.The mRNA expression of IL-17F,IL-17RC,Act1 and TRAF6 in the spinal dorsal horn of rats in each group was detected by real-time PCR.The average fluorescence intensity of M1 microglia in the spinal dorsal horn of rats in each group was detected by immunofluorescence.Results Behavioral results showed that before intervention,compared with the sham group,paw mechanical withdraw threshold(PMWT)decreased and cold sensitivity threshold(CST)increased in the model group and the tuina group;after tuina intervention,PMWT in the tuina group was increased,and CST was decreased compared with the model group;after intervention,PMWT in the tuina group was increased,while CST was decreased(P＜0.05).RT-PCR results showed that compared with the sham group,mRNA expression levels of IL-17F,IL-17RC,TRAF6 and Act1 in the spinal dorsal horn of the model group were increased;compared with model group,the mRNA expression levels of above indexes in the tuina group were decreased(P＜0.05).Western boltting results showed that compared with the sham group,the expression levels of IL-17F and TRAF6 protein in the spinal dorsal horn of the model group were increased;compared with the model group,the expression levels of IL-17F and TRAF6 protein in the tuina group decreased(P＜O.05).Immunofluorescence results showed that the mean fluorescence intensity of CD40 in the spinal dorsal horn of model group was enhanced compared with the sham group;compared with the model group,the mean fluorescence intensity of CD40 in the tuina group was decreased(P＜0.05).Conclusion The"three methods and three points"tuina technique can produce immediate analgesia by inhibiting the expression of IL-17F,IL-17RC,Act1,TRAF6 and the activation of M1 microglia in the dorsal horn of the spinal cord after one intervention.

Objective To explore the analgesic initiation mechanism of"three-manipulations and three-acupoints"of tuina on minor chronic constriction injury(minor CCI)model rats.Methods According to the random number table method,35 SD rats were randomly divided into five groups:normal group,sham group,model group,tuina group,and tuina+MK-801 group.The model group,tuina group,and tuina+MK-801 group were subjected to ligation of the right sciatic nerve trunk to establish a minor CCI rat model.The sham group was only exposed to the right sciatic nerve without ligation,and the normal group was not subjected to any operation.The normal group was not subjected to any intervention measures.On the seventh day after modeling,the model group and the sham group underwent 9 minutes of grasping restraint,while the tuina group underwent one intervention of three-manipulations(point method,dialing method,and kneading method)and three-acupoints(right"Yinmen"(BL37),"Chengshan"(BL57),and"Yanglingquan"(GB34)acupoints)with each manipulation and acupoint intervention for 1 minute for a total of 9 minutes.The tuina+MK-801 group received intrathecal injection of MK-801 from the fifth to seventh days after modeling,with a dose of 6 μg(10 μL)per day,tuina intervention was performed 30 minutes after the last intrathecal injection,and the specific operation of tuina was the same as that of the tuina group.Before modeling,after modeling,and after intervention,each group of rats was subjected to cold sensitivity threshold(CST)and mechanical withdrawal threshold(MWT)testing.After intervention,immunohistochemistry was used to detect the positive expression of cyclic guanosine monophosphate(cGMP)in the spinal dorsal horn(SDH)at L4-6 segments;protein expressions of N-methyl-D-aspartate receptor 1(NMDAR1),neurogenic nitric oxide synthase(nNOS),soluble guanylyl cyclase β(sGCβ),and protein kinase G1(PKG1)in SDH at L4-6 segments were detected by Western blotting;mRNA expressions of NMDAR1,nNOS,sGCβ,cGMP,and PKG1 in SDH at L4-6 segments were detected by real-time PCR.Results Compared with the normal and sham groups,after modeling,CST increased and MWT decreased in the model group,tuina group and tuina+MK-801 group(P＜0.05);after intervention,the positive protein expression of cGMP was increased,the protein expressions of NMDAR1,nNOS,sGCβ,and PKG1 were increased,and mRNA expressions of NMDAR1,nNOS,sGCβ,cGMP,and PKG1 were increased in SDH at L4-6 segments in the model group(P＜0.05).Compared with the model group,after intervention,CST decreased and MWT increased in the tuina group and tuina+MK-801 group(P＜0.05);the positive protein expression of cGMP was decreased,the protein expressions of NMDAR1,nNOS,sGCβ,and PKG1 were decreased,and mRNA expressions of NMDAR1,nNOS,sGCβ,cGMP,and PKG1 were decreased in SDH at L4-6 segments in the tuina group and tuina+MK-801 group(P＜0.05).Conclusion One-time tuina intervention can effectively improve the symptoms of thermal and mechanical hyperalgesia induced by peripheral nerve injury,which may initiate analgesia through the NMDAR1/cGMP/protein kinase G signaling pathway,thereby exerting immediate analgesic effect.

In recent years, exosomes had been recognized as a potential cell-free therapeutic tool in the field of regenerative medicine due to their easy accessibility, low immunogenicity, and good therapeutic effect. As paracrine products of cells, exosomes not only have the functions of their donor cells but also involve fewer ethical disputes. They are more stable than traditional stem cell therapy, and easy to store, transport and sterilize, which are gradually applied in the field of oral regenerative medicine. This article provides a review of the general properties of exosomes and their application in the field of oral regeneration, with a view to exploring new pathways for functional regeneration of the stomatognathic system.

BackgroundThe prevalence of depressive disorder in adolescents is on the rise. There have been studies on the pairwise relations between dysfunctional attitude， negative automatic thoughts， positive coping style and depressive symptoms in the past. However， the impact of the intrinsic relations among dysfunctional attitude， negative automatic thoughts and positive coping style on depressive symptoms is still unclear. ObjectiveTo explore the influence of dysfunctional attitude on adolescent depressive symptoms and examine the action path of negative automatic thoughts and positive coping style on it， in order to provide references for intervention for adolescent patients with depressisve disorder. MethodsThis study involved 162 adolescent patients with depressive disorder， who met the diagnostic criteria for depressive episodes in the International Classification of Diseases， 10th edition （ICD-10） and received treatment in Taiyuan Psychiatric Hospital from October 1， 2022 to October 31， 2023. These patients were evaluated using Self-rating Depression Scale （SDS）， Dysfunction Attitude Scale （DAS）， Positive Coping Style Subscale in Simplified Coping Style Questionnaire（SCSQ） and Automatic Thoughts Questionnaire （ATQ）. Pearson correlation analysis was adopted to examine the correlation among scores of scales above. Model 6 in Process 3.4.1 was adopted to test the acting path of negative automatic thoughts and positive coping style between dysfunctional attitude and adolescent depression symptoms. ResultsA total of 148 adolescent patients with depressive disorder completed an effective questionnaire survey， with a response rate of 91.36%. The direct effect value of dysfunctional attitude on depressive symptoms was 0.423 and the effect size was 63.32%. Negative automatic thoughts and positive coping style affected as acting path between dysfunctional attitude and depressive symptoms， with effect values of 0.156 （accounting for 23.35% of the total effect） and 0.045 （accounting for 6.74% of the total effect） respectively. Meanwhile， negative automatic thoughts and positive coping style affected as a chain reaction pathway between dysfunctional attitude and depressive symptoms， with an effect value of 0.044， accounting for 6.59% of the total effect. ConclusionDysfunctional attitude can not only directly affect the depressive symptoms of adolescent patients with depressive disorder， but also affect the depressive symptoms of adolescent patients with depressive disorder through the independent path or chain path of negative automatic thoughts and positive coping style.

Objective:To explore the effect of Baduanjin on gait parameters and serum nerve growth factor in Parkinson disease (PD) patients with freezing of gait(FOG).Methods:From December 2021 to December 2022, thirty-eight PD patients with FOG who met the inclusion and exclusion criteria were randomly divided into observation group ( n=18) and control group ( n=20) by random number table.The patients in both two groups received 4 weeks of drug therapy combined with basic rehabilitation treatment respectively, and the patients in observation group received additional Baduanjin training.Efficacy was evaluated 1 day before intervention and after 4 weeks of intervention through unified Parkinson's disease rating scale-Ⅱ(UPDRS-Ⅱ) item 14, freezing of gait questionnaire (FOGQ), gait starting time, gait cycle, stride length, dynamic plantar peak pressure and average pressure, while the levels of brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor(GDNF) in peripheral blood of patients were tested.SPSS 23.0 software was used to conduct Chi-square test, paired t-test, independent sample t-test and Mann-Whitney U test. Results:Before treatment, there were no significant differences in score of UPDRS-Ⅱ item 14, FOGQ score, gait starting time, gait cycle, stride length, dynamic planar peak pressure, average pressure, peripheral blood BDNF level and GDNF level between the two groups ( t=-0.542, 0.562, 0.490, 0.674, 0.440, 0.606, -0.835, -0.873, -0.250, all P>0.05). After treatment, compared with the control group, dynamic plantar peak pressure (control group (14.26±3.23) N/cm 2, observation group (11.40±4.13) N/cm 2, t=-2.389, P=0.022) and plantar average pressure (control group (3.34±0.72) N/cm 2, observation group (2.79±0.81) N/cm 2, t=-2.209, P=0.034) of the observation group were significantly decreased (both P<0.05). There were no significant differences in UPDRS-Ⅱ item 14, FOGQ score, gait starting time, gait cycle, stride length, BDNF and GDNF concentrations in peripheral blood between the two groups after treatment (all P>0.05). The difference between pre-treatment and post-treatment of FOGQ score (control group 1.00 (0.00, 1.00) , observation group 2.00 (0.75, 3.00), Z=-2.547, P=0.011), gait starting time (control group -1.04 (-1.86, -0.47)s, observation group -2.34 (-3.41, -1.03) s, Z=-2.280, P=0.023), gait cycle (control group 0.29 (0.08, 0.58)s, observation group 0.35 (0.16, 1.00) s, Z=-2.748, P=0.006), stride length(control group 0.19 (0.14, 0.24) m, observation group 0.26 (0.23, 0.38)m, Z=-1.360, P=0.005), the dynamic plantar peak pressure (control group -4.11 (-5.87, -2.57) N/cm 2, observation group -8.44 (-10.12, -4.81) N/cm 2, Z=-3.333, P=0.001) and average pressure (control group -0.55 (-1.00, -0.03) N/cm 2, observation group -1.11 (-1.51, -0.66) N/cm 2, Z=-2.062, P=0.009) in the observation group were better than those in the control group.After treatment, the BDNF level in peripheral blood in observation group was higher than before treatment( t=-2.315, P=0.033). Conclusion:Baduanjin can improve frozen gait score and gait parameters in PD patients with FOG, which may be related to the increase of peripheral blood BDNF.

Objective To explore the analgesic initiation mechanism of three-manipulation and three-acupoint tuina in model rats with minor chronic constriction injury(CCI).Methods Fifty-six SD rats were divided randomly into eight groups:normal group,sham group,model 1 group,model 2 group,tuina 1 group,tuina 2 group,tuina 1+transient receptor potential vanilloid-1(TRPV1)antagonist group,and tuina 2+transient receptor potential ankyrin 1(TRPA1)antagonist group.The model,tuina,and tuina+antagonist groups were established with minor CCI models.The tuina and tuina+antagonist groups received the three-method three-point intervention(point method,dial method,kneading method,Yinmen point,Chengshan point,Yanglingquan point)7 days after modeling.The model and sham groups were subjected to grasping restraint,and the normal group received no intervention.After the respective interventions,each group was tested for changes in mechanical withdrawal threshold(MWT)and thermal withdrawal latency(TWL)to detect different types of pain.The nitric oxide(NO)content of the dorsal root ganglion(DRG)was determined by the nitrate reductase method,and changes in protein and gene expression levels of components of the TRPV1/TRPA1-NO-cGMP-protein kinase G(PKG)signaling pathway in the DRG of each group were determined by enzyme-linked immunosorbent assay,Western blot,and qPCR.Results Compared with the model group,MWT and TWL were prolonged in the tuina 1 and tuina 2 groups.Expression levels of TRPV1,TRPA1,NO,soluble guanylate cyclase-β,cGMP,and PKG1 in the DRG were significantly decreased in the tuina 1,tuina 2,tuina 1+TRPV1 antagonist,and tuina 2+TRPA1 antagonist groups.Conclusions Tuina can effectively improve the symptoms of thermal and mechanical hyperalgesia caused by peripheral nerve injury after one-time intervention.Tuina can exert immediate and continuous analgesic effects via the TRPV1/TRPA1-NO-cGMP-PKG signaling pathway.

Objective:To determine the effects of early enteral nutrition (EEN) on the short-term prognosis of patients receiving veno-arterial extracorporeal membrane oxygenation (VA-ECMO).Methods:61 patients admitted to the Coronary Care Unit (CCU) of Henan Provincial Peoples' Hospital from February 2022 to March 2023 to receive VA-ECMO treatment were selected as the study objects according a retrospective survey. The patients were divided into an achievement group ( n=34) and a non-achievement group ( n=27) based on whether the feeding amount reached 70% or over of the target calories (25kcal/kg.d) on the 7th day of ECMO treatment. The general characteristics, disease information, complications, and prognosis between the two groups after ICU admission were recorded and compared. A multivariable Cox proportional hazards model was used to evaluate the impact of various factors on clinical outcomes. Kaplan-Meier analysis was used to draw survival curves for the two groups, and the predictive value of the ratio of actual EN intake to target energy was calculated by plotting the ROC curve. Results:A total of 61 patients were included, with an overall in-hospital mortality rate of 50.82% (31/61), with 32.35% (11/34) in the achievement group, and 70.37% (19/27) in the non-achievement group. Cox regression analysis revealed that the occurrence of hypoxic-ischemic encephalopathy (HR=0.341, 95% CI:0.119-0.975), ECOM weaning failure ( HR=0.269, 95% CI:0.111-0.651), and achieving EN targets on the 7th day of VA-ECMO treatment ( HR=10.891, 95% CI:1.178-100.718) were independent factors for patient mortality during hospitalization. The ROC curve for the percentage of EN achievement on the 7th day of VA-ECMO treatment and in-hospital mortality showed an area under the curve of 0.755, with a cutoff value of 0.73. Conclusion:The presence of ischemic hypoxic encephalopathy, ECOM weaning failure, and whether achieving EN targets or not is closely related to the prognosis of VA-ECMO patients. Patients who achieving EN targets of over 73% had the lowest in-hospital mortality rate. Therefore, more attention should be paid to the energy intake of VA-ECMO patients to reduce their risk of mortality.

Objective:To investigate the influence of T2DM Spleen-qi Deficiency syndrome on Ankle-Brachial Index (ABI).Methods:The clinical data of 298 patients with T2DM who were hospitalized in Dongzhimen Hospital, Beijing University of Chinese Medicine from January 2019 to December 2021 were retrospectively analyzed. According to the diagnostic criteria of spleen-qi deficiency syndrome, the patients were divided into two groups: spleen-qi deficiency syndrome group and non-spleen-qi deficiency syndrome group. There were 142 patients in the spleen-qi deficiency syndrome group and 156 patients in the non-spleen-qi deficiency syndrome group. The differences of ABI between the two groups were compared, and the correlation between spleen-qi deficiency syndrome and clinical indicators (gender, age, body mass index, course of diabetes, history of hypertension, smoking history, fasting glucose, total cholesterol, triglyceride, platelet, hemoglobin, serum albumin, blood urea nitrogen, serum creatinine, estimated glomerular filtration rate) and ABI in T2DM patients was analyzed.Results:The left ABI [1.09 (1.00, 1.19) vs. 1.13 (1.03, 1.22)] and the right ABI [1.09 (0.96, 1.17) vs. 1.12 (1.02, 1.20)] in T2DM spleen-qi deficiency syndrome group were significantly lower than those in non-spleen-qi deficiency group ( P<0.05).The left ABI was significantly correlated with spleen-qi deficiency syndrome ( r=0.122, P=0.035) and estimated glomerular filtration rate ( r=0.137, P=0.018), and the right ABI was significantly correlated with spleen-qi deficiency syndrome ( r=0.123, P=0.034) and PLT ( r=-0.115, P=0.047). After correcting for other confounding factors by multiple linear regression analysis, there was significantly correlation between spleen-qi deficiency syndrome and ABI. Conclusion:Compared with the non-spleen-qi deficiency syndrome group, T2DM patients in the spleen-qi deficiency group had a lower ankle-brachial index and were more likely to develop peripheral arterial disease.

Objective:To explore the regulatory mechanism of α-synuclein in the degradation of autophagy-lysosome pathway(ALP) in Parkinson disease(PD) model cells after interference or overexpression of dynein heavy chain(Dynhc) gene.Methods:SH-SY5Y cells were divided into control group, PD group, Dynhc interference group, Dynhc overexpression group, and Dynhc interference+ rapamycin group according to experimental requirements.Using Western blot to detect Dynhc, α-synuclein, microtubule-associated protein l light chain 3 (LC3), lysosome-associated membrane protein 2 (LAMP2), tubulin, dynein activator protein p150, and kinesin KIF5B.Flow cytometry was used to detect the level of cell apoptosis.Immunoconfocal microscopy was used to observe the structure of tubulin and the co-localization of LC3 and LAMP.SPSS 23.0 software was used for statistical analysis.One-way ANOVA was used for inter group comparisons, and further pairwise comparisons were conducted by LSD- t test. Results:There were statistically significant differences in the expression of α-synuclein, autophagy-related proteins, microtubules, and microtubule-related proteins among cells in the 5 groups(all P<0.001). The protein expression levels of Dynhc, α-synuclein, LC3, LAMP2, p150, and KIF5B in the PD group were higher than those in the control group (all P<0.05). The protein levels of Dynhc, LAMP2, tubulin and p150 in the Dynhc interference group were lower than those in the PD group (all P<0.05), while the protein levels of α-synuclein, LC3 and KIF5B were higher than those in the PD group (all P<0.05). The protein levels of α-synuclein, LC3, and KIF5B in the Dynhc overexpression group were lower than those in the PD group (all P<0.05), while the protein levels of Dynhc, LAMP2 and p150 were higher than those in the PD group (all P<0.05). The protein level of LC3 in the Dynhc interference+ rapamycin group was higher than that in the Dynhc interference group ( P<0.05). There were no statistically significant differences in the protein levels of Dynhc, α-synuclein, LAMP2, microtubule protein, p150 and KIF5B compared to the Dynhc interference group (all P>0.05). Compared with the control group, the cell apoptosis rate in PD group increased((12.77±1.66)%, (7.64±1.45)%), the microtubule morphology remained unchanged, and autophagosomes fused more with lysosomes. Compared with the PD group, the cell apoptosis rate of Dynhc overexpression group decreased, and there was no significant change in microtubule structure, and there was more fusion between autophagosomes and lysosomes.Compared with the PD group, the cell apoptosis rat of Dynhc interference group increased((18.45±1.91)%), and the microtubule morphology was sparse, and there was less fusion between autophagosomes and lysosomes. Compared with the PD group, the Dynhc overexpression group showed a decrease in cell apoptosis rate ((9.95±1.56)%), no significant changes in microtubule structure, and more fusion between autophagosomes and lysosomes.Compared with the Dynhc interference group, the Dynhc interference+ rapamycin group showed no significant changes in cell apoptosis rate ((19.05±2.46)%), microtubule morphology, and fusion of autophagosomes and lysosomes. Conclusion:Dynhc can reduce cell apoptosis by enhancing cell ALP function, increasing the degradation of α-synuclein and maintaining of microtubule structure integrity.