Objective: To observe the clinical efficacy of electroacupuncture (EA) plus long-snake moxibustion for rheumatoid arthritis (RA) due to kidney deficiency and cold coagulation. Methods: A total of 60 patients in active stage of RA were randomly divided into an observation group and a control group, with 30 cases in each group. Patients in the control group took methotrexate tablets and nimesulide dispersible tablets orally for treatment, while those in the observation group received additional treatment of EA plus long-snake moxibustion. Both groups were treated for 12 weeks. The post-treatment changes in symptomatic grading and quantifying score, disease activity score with 28 joint counts (DAS28), and inflammatory indicators erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) were observed, and the efficacy was evaluated. Results: The total effective rate in the observation group was 89.9％, versus 76.6％ in the control group, and there was a significant difference in the total effective rate between the two groups (P<0.05). After treatment, the symptomatic grading and quantifying score and DAS28 in both groups were significantly improved (all P<0.05), and the improvements in the observation group were more significant than those in the control group (both P<0.05). Besides, there were 11 cases with low disease activity index (DAI) and in remission in the observation group versus 5 cases in the control group, showing a statistically significant between-group difference (P<0.05). The ESR and CRP scores in both groups were significantly reduced after treatment (all P<0.05), also showing statistically significant between-group differences (both P<0.05). Conclusion: The efficacy of additional EA plus long-snake moxibustion based on oral medications for RA due to kidney deficiency and cold coagulation is better than that of the oral medications alone.

Objective To investigate the effects of ropivavaine on gamma -aminobutyric acid(GABA)-activated membrane cur-rents in isolated dorsal root ganglion(DRG) neurons of the rats with ischiadic nerve chronic constriction injury (CCI) and to discuss the possible analgesia mechanism of ropivacaine .Methods The whole-cell patch clamp technique was used to record and compare the changes of GABA receptor activation currents of acute isolated DRG neurons after 30 s of ropivacaine preperfusion in the oper-ating side and the operative opposite side of the CCI model rats and the sham-operation group .Results (1)Compared with the oper-ative opposite side ,the sham-operation group and the control group ,the thermal withdrawal latency in the operative side group of the CCI model rats was notablely shortened(P<0 .05);(2)the amplitude of GABA-activated currents with different concentration GABA(0 .1-1 000μmol/L) in the operative opposite side group of the CCI operation was significantly greater than that of the op-erative side group and the sham-opeartion group ;(3)DRG neurons after ropivacaine preperfusion (0 .1-1 000μmol /L) showed va-rying degrees of enhancement effect on the 100 μmol/L GABA-activated currents ,the enhancement amplitude in the CCI operative opposite side group was significantly greater than that in the operative side group and the sham-operation group ;(4)The dose-re-sponse curve of DRG neurons GABA (0 .1-1 000μmol/L) activated current in the operative side group of the CCI rats after ropiva-caine pre-perfusion (100 μmol/L) was shifted to the left ,the difference between two EC50 had no statistical significance (P>0 .05) .Conclusion Ropivacaine has the enhancement effect on GABA activated currents in the DRG neurons of the CCI model rats , which could be one of reasons for ropivacaine producing the anesthetic and analgesic effect .

Objective To investigate the relationship of serum cholinesterase(CHE) level with the severity and prognosis in patients with acute cerebral infarction. Methods A total of 325 patients with acute cerebral infarction were recruited as patients group,and another 101 healthy sub?jects were selected as control group. Velocity method was employed to detect the level of serum CHE. Patients with acute cerebral infarction were then divided into different groups according to the infarcts diameter and the modified Rankin scale(mRS)at 1 year post stroke. The collected data were analyzed statistically. Results The level of serum CHE in small and medium area infarction group was higher than control group(P<0.01);the level of serum CHE in large area infarction group was lower than control group(P<0.01);the level of serum CHE was negatively correlated with infarct size,NIHSS and the mRS score(r=-0.302,-0.232,-0.455,P<0.001). The level of CHE,age,NIHSS and infarcts diameter was identified as independent influence factors for prognosis of acute cerebral infarction. Conclusion Early phase of serum CHE level is closely related with the infarct size and illness severity index in patients with acute cerebral infarction,which could be an independent factor affecting the prognosis of cere?bral infarction.

Public relationship has an outstanding effect on virtue education. Public relationship can regulate behavior, culture noble ethics, coordinate interpersonal relations and improve the ability of society adaptation for medical students. Public relationship can also build up good image of medical students, and improve their comprehensive qualities.

Objective:Summarize and analyze the clinical features of immune checkpoint inhibitor (ICI)-related colitis.Methods:From January 2019 to September 2020, the clinical data of 8 patients with ICI-related colitis from Peking Union Medical College Hospital were retrospectively collected and including the onset of ICI-related colitis, clinical symptoms, endoscopic and pathological findings, treatment, comorbidities and resuming of ICI. Independent sample t test was used for statistical analysis. Results:Eight patients were all male, and the median age (range) was 66 years old (55 to 74 years old), 7 cases were diagnosed with stage Ⅳ lung cancer and 1 case was diagnosed with stage Ⅲc pyelo-carcinoma. Among 8 patients, 4 cases of ICI-related colitis occurred during combination of anti-programmed death-1 (PD-1) treatment and chemotherapy, 2 cases occurred during anti-PD-1 monotherapy after combination of anti-PD-1 treatment and chemotherapy, and 2 cases occurred after anti-PD-1 monotherapy. The median time (range) was 44 d (27 to 128 d) from initial anti-PD-1 treatment to the onset of ICI-related colitis and the median time (range) was 8 d (6 to 35 d) from last anti-PD-1 treatment to onset of ICI-related colitis. The ICI efficacy of 4 patients had partial response, 2 patients had stable disease, 1 patient had disease progression, and 1 patient′s condition was not assessed. All 8 patients had moderate to severe extensive colitis. The main clinical manifestation was diarrhea (5/8), 3 patients accompanied by abdominal pain. The endoscopic findings were diffuse mucosal erosion, accompanied by ulcer in 2 patients. The main pathologic findings were cryptitis or crypt abscess, accompanied by apoptosis in 2 patients. Eight patients were all treated with glucocorticoids, among them 2 patients were further treated with biologics, due to the insufficient efficacy of glucocorticoid treatment, 4 patients had opportunistic infections. The initial prednisone dose for patients with opportunistic infections and patients without opportunistic infections was (85.00±52.60) and (60.00±23.09) mg, respectively. The prednisone treatment course was (8.75±4.03) and (7.50±3.11) weeks, respectively, and the differences were not statistically significant (both P>0.05). The colitis relapsed in all 3 patients after resuming of ICI. Conclusions:ICI-related colitis had corresponding ICI treatment history and clinical, endoscopic, and histopathological features. Glucocorticoid is the main treatment, and it is prone to relapse after resuming of ICI.

Objective To investigate the effects of midazolam on GABAA receptor-activated currents in isolated dorsal root ganglion (DRG) neurons in rats.Methods Sprague-Dawley rats of both sexes,weighing 200-250 g,aged 4 weeks,were used in the study.The DRG neurons were isolated and GABAA receptor-activated currents were recorded using the whole-cell patch-clamp technique.GABAA receptor-activated currents were recorded after administration of the mixture of midazolam 3.00 μmol/L (final concentration)and the different final concentrations (0.03,0.10,1.00,10.00,100.00 and 1000.00 μmol/L) of GABA,after different concentrations of midazolam (0.03,0.10,1.00,3.00,10.00 and 100.00 μmol/L) was given,after administration of the mixture of different final concentrations(0.03,0.10,1.00,3.00,10.00 and 100.00 μmol/L) of midazolam and GABA 100.00 μmol/L (final concentration),and after administration of the mixture of midazolam 1.00μmol/L (final concentration) and GABA 100.00 μmol/L (final concentration)at the preset time points of perfusion with different concentrations of midazolam (0,20,40,60 and 120 s of perfusion).The enhancement rate of the currents was calculated.Results No change in the membrane currents was found after midazolam was perfused in the neurons sensitive to GABA.GABAA receptor-activated currents were enhanced after administration of the mixture of different concentrations of GABA and midazolam.GABAA receptor-activated currents were enhanced after different concentrations of midazolam were given compared with that before administration,and the enhancement rate of the GABAA receptoractivated currents was gradually increased with the increase in the concentration of midazolam and reached the peak at the concentration of 3.00 μmol/L.The enhancement rate of the GABAA receptor-activated currents was gradually increased with the prolongation of perfusion time and peaked at 40 s of perfusion.Conclusion Midazolam can enhance the GABAA receptor-activated currents in rat dorsal root ganglion neurons,indicating that midazolam increases the role of GABA through increasing the activity of GABAA receptors and has analgesic effect at the spinal cord level.

Objective To compaire the physical characteristics of semen morphology before and after semen coagulation-liquefaction under microscope and understand the significance of these characteristics for the determination of semen liquefaction.Methods Semens were placed in sperm counting chamber immediately after collection.The morphological changes of the seminal gelatinous substance during liquefaction were observed under microscope and analyzed.Results Morphological changes during semen liquefaction can be clearly observed.Among 32 samples of semen,forward sperm progression and motility were (30.3?12.4)% and (45.0?14.9)%,(44.9?12.7)% and (59.0?15.3)%,before and after the liquefaction,respectively.The differences were statistically significant (t=-1.130,5.023,P0.05).Conclusions Microscopic observation of the seminal gelatinous substance is a simple and feasible method for objective measurement of sperm liquefaction.These findings suggest it may provide pathological significance on semen liquefaction abnormality in infertility clinic.

Objective To investigate the effect and its mechanism of diazoxide on the blood-brain barrier (BBB) of rats after cerebral ischemia/reperfusion (I/R) injury.Methods Sixty Wistar rats were randomly divided into sham operation group,I/R group,and diazoxide pretreatment groups of low,middle,large dose (5,10,20 mg/kg).The I/R models of rats were performed to undergo middle cerebral artery embolism by thread.BBB permeability was estimated by Evans blue (EB) dyeing,transmission electron microscope (TEM) was used to observe the modification of interendothelial tight junction (TJ) of capillaries.The expression of aquaporin-4 (AQP4) in every rat brain tissues was detected by immunity histochemistry technique.Results (1) Compared to sham operation group,the permeability extent of EB were significantly increased by I/R,which was distinctly attenuated in middle and large dose of diazoxide pretreatment rats,while no obvious changes were found between I/R and low dose groups.(2) TEM showed that TJ of the brain tissue opened after I/R injury and no significant opening of TJ was observed in middle and large dose of diazoxide preconditioning groups.(3) Compared to sham operation group,the expression of AQP4 in the brain tissue of the I/R group was apparently increased (P ＜0.01).Compared to I/R group,the expression of AQP4 was apparently increased in middle and large dose pretreatment groups (P ＜ 0.01),and there were no obvious difference between low dose group and the I/R group.Conclusions Preconditioning of ischemia/reperfusion injury with diazoxide protects the blood-brain barrier,which may due to keep the TJ closed and decrease expression of AQP4 protein.

OBJECTIVE To study the molecular mechanism of cisplatin(DDP)by which HeLa cell growth and proliferation are inhibited. METHODS Cultured HeLa cells were treated with DDP 0.02-75 μmol · L-1 for 24 or 48 h. CCK-8 assay was used to determine the cell proliferation. The wound scratch assay was used to detect the cell migration and invasion. Flow cytometry was used to detect the cell cycle arresting. q-PCR was used to test the expression of metastasis suppressor gene 1 (MTSS1)mRNA. Western blot was used to determine protein levels of MTSS1,phosphorylated-extra?cellular signal-regulated kinase(p-ERK) and phosphorylated-serine-threonine kinase(p-AKT). RESULTS Following the treatment with DDP for 24 or 48 h,the proliferation of HeLa cells was inhibited significantly (P<0.05),the value of the half inhibitory concentration (IC50) of cells was 4.14 and 11.82 μmol · L-1. Migration and invasion activity of HeLa cells were reduced according to the wound scratch assay(P<0.05). Flow cytometry results showed that the cell cycle was arrested at S phase. q-PCR results showed that MTSS1 mRNA expression changed with DDP in a concentration-dependent manner (r24 h=-0.965,P<0.01;r48 h=-0.953,P<0.01). Western blot showed that the protein levels of MTSS1,p-ERK and p-AKT expression declined significantly with the increase in DDP concentrations(p-ERK:r24 h=-0.875,P<0.01;r48 h=-0.966,P<0.01. p-AKT:r24 h=-0.831,P<0.01;r48 h=-0.863,P<0.01. MTSS1:r24 h=-0.969,P<0.01;r48 h=-0.988,P<0.01). CONCLUSION DDP treatment inhibits HeLa growth and proliferation by interfering with the MTSS1 expression and disturbing the activation of ERK and AKT signaling pathways.

The effect of phenol concentration on the structure and function of microbial communities,which were cultured in different conditions using coking wastewater biofilm as seeding,was investigated by Biolog and denaturing gradient gel electrophoresis(DGGE)methods.The less number of bands of cultivated sam-ples on the denaturing gradient gel electrophoresis fingerprint of 16S rRNA gene indicated reduction of di-versity after enrichment and cultivation.Some bands on the DGGE gel were significantly influenced by the phenol concentration in medium.The results of Biolog showed that the original biofilm sample had the highest substrate utility capacity as measured by average well color development(AWCD).But low concen-tration of phenol enriched sample S7 showed more diverse activity on the utility of Carboxylic acids.The principal component analysis(PCA)of Biolog data revealed that the metabolic patterns were similar when using the same phenol concentration,although the sample S7 much less similar to other cultivated samples.These results suggested that the enrichment and cultivation with phenol supplemented decreased the diver-sity and also changed the metabolic function of the microbial community.Lower phenol concentration in-creased the microbial community metabolic activity.The phenol degrading capacity of isolates from each samples indicated that the enrichment and cultivation condition had changed the type and property of cul-truable bacteria.Based on these results,we concluded that the different microorganisms will be isolated un-der different cultivation condition.