Objective To discuss the influence and significance of stromal cell-derived factor 1 (SDF-1) and its specific receptor CXC chemokine receptor 4 (CXCR4) in proliferation, migration and invasion ability of SW480 colorectal cancer cells. Methods The colorectal cancer cell line SW480 in logarithmic phase was divided into four groups:control group (with no any processing), SDF-1 group (added 100μg/L SDF-1), SDF-1+1 mg/L AMD3100 mixed group (added 1 mg/L AMD3100 for 2 hours, then added 100μg/L SDF-1) and AMD3100 group (added 1 mg/L AMD3100). Immunohisto?chemistry method was used to detect the protein expression of CXCR4 in SW480 cells. The expression of CXCR4 mRNA in SW480 cells was detected by RT-PCR before and after SDF-1 and AMD3100 treatment. MTT assay and transwell chamber were used to test the changes of proliferation, migration and invasion ability of SW480 cells before and after SDF-1 and AMD3100 treatment. Results The result of immunohistochemistry showed that CXCR4 protein was expressed in SW480 cells (positive rate=80%). CXCR4 mRNA was expressed in SW480 cells. The expression of CXCR4 mRNA was up-regulat?ed by SDF-1(100μg/L), which could be inhibited by AMD3100 (1 mg/L). The proliferation activity was higher in SDF-1 group (0.847±0.039) compared to that in control group (0.624±0.011) and SDF-1+AMD3100 mixed group (0.607 ±0.016). The proliferation activity was lower in AMD3100 group (0.456 ± 0.031) than that in control group and SDF-1+AMD3100 mixed group (F=108.03, P<0.05). The number of transmembrane cells was more in SDF-1 group (98.7±5.8, 33.7±6.2) than that in control group (21.0±2.2, 6.1±2.3), SDF-1+1 mg/L AMD3100 mixed group (18.5±8.4, 8.5±2.8) and AMD3100 group (12.1±3.2, 2.1±1.0) detected by transwell chamber experiment. However, there were no statistical differences between three groups. Conclusion The biological axis SDF-1/CXCR4 can promote the proliferation, migration and invasion in colorectal cancer cell line SW480.

Objective To examine loss of heterozygosity (LOH) and microsatellite instability (MSI) of locus D8S532 on chromosome 8 and their influence on the expression of sFRP1 in the hepatocellular carcinoma (HCCs), which may provide an experimental evidence for clarifying the mechanism of sFRP1 gene and tumor development. Methods DNA was extracted from formalin-fixed paraffin-embedded tissues. Polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) and ordinary silver stain were used to study LOH and MSI of locus D8S532. Envision immunohistochemistry, Leica-Qwin computerized imaging system and Image-Pro PluS (IPP) version 4.5 professional imaging analysis software were used to assess the expression of sFRP1. Results The detection rates of LOH and MSI of locus D8S532 in the 36 specimens of HCC were 11.11% and 8.33% respectively. The down-regulation of sFRP1 was observed in 31 of 36 HCCs (86.11%) compared with non-carcinoma liver tissues, and the positive rate of sFRP1 protein of the HCCs was 52.78%( 19/36 ). The frequency of LOH was lower in the cases with positive expression of sFRP1 protein than those negative (0 vs 23.53%, P <0.05). Conclusion It was a common phenomenon that expression of sFRP1 protein is negative or low in Chinese with HCCs. The genetic instability of sFRP1 gene was one of causes, which lead to HCCs. LOH may play a major role in negative expression of sFRP1.

OBJECTIVETo investigate the effect of cyclopamine on metastatic ability of human esophageal cancer EC109 cells and explore the possible mechanism.

METHODSTranswell chamber assay and angiogenesis assay were used to examine the metastatic ability, invasiveness and angiogenesis of EC109 cells treated with cyclopamine for 48 h. The expression of Gli-1 mRNA was detected using RT-PCR, and Western blotting was used to examine the protein expressions of Gli-1, matrix metalloproteinase-9 (MMP-9) and vascular endothelial growth factor (VEGF).

RESULTSInhibition of the hedgehog signaling pathway by cyclopamine suppressed the migration, invasion, and angiogenesis of EC109 cells. Cyclopamine treatment significantly lowered the expression of Gli-1 mRNA (P<0.05) and the protein expressions of Gli-1, MMP-9 and VEGF (P<0.05).

CONCLUSIONCyclopamine can significantly inhibit the metastatic capacity of EC109 cells possibly by down-regulating MMP-9 and VEGF expression as a result of Gli-1 inhibition.

Cell Line, Tumor ; Esophageal Neoplasms ; metabolism ; pathology ; Gene Expression Regulation, Neoplastic ; Humans ; Matrix Metalloproteinase 9 ; metabolism ; Neoplasm Metastasis ; RNA, Messenger ; genetics ; Signal Transduction ; drug effects ; Transcription Factors ; metabolism ; Vascular Endothelial Growth Factor A ; metabolism ; Veratrum Alkaloids ; pharmacology ; Zinc Finger Protein GLI1

Objective:To compare the value of Caprini, Padua and Autar risk assessment models in the risk assessment of venous thromboembolism in hospitalized stroke patients.Methods:A retrospective case-control study were used to collect hospitalized stroke patients in the neurology department of Xiangya Hospital from January 1, 2018 to June 30, 2020. 75 patients with venous thromboembolism (VTE) were VTE group and 75 patients without VTE were control group. The risk of thrombosis was assessed by Caprini risk assessment model, Padua risk assessment model and Autar risk assessment model respectively. The predictive value of each model on the risk of VTE formation in stroke patients was analyzed by receiver operating characteristic (ROC) curve and area under the curve (AUC).Results:The areas under the curve of Caprini, Padua and Autar risk assessment models for predicting the risk of VTE formation in stroke patients were 0.768±0.039, 0.746±0.040 and 0.710±0.042 respectively. The sensitivity, specificity and accuracy were 81.3%, 61.3%, 71.3%(Caprini), 72.0%, 72.0%, 72.0%(Padua), 66.7%, 68.0% and 67.3%(Autar) respectively. There was no significant difference in the prediction value of the three models on the formation risk of stroke VTE (all P>0.05). The technique for order preference by similarity to ideal solution (TOPSIS) method was used to comprehensively evaluate the AUC, sensitivity, specificity and accuracy of the three risk assessment models. Padua risk assessment model was the best, followed by Caprini risk assessment model and Autar risk assessment model. Conclusions:The Caprini, Padua, and Autar risk assessment scales can well predict the risk of VTE in stroke patients. The Caprini scale has the highest sensitivity and the Padua scale has the highest specificity. There is no significant difference in the predictive value of the three scales. Comprehensive evaluation of predictive value: Padua risk assessment scale is the best.

Since the outbreak of coronavirus disease 2019 (COVID-19) in the late 2019, a variety of antiviral drugs have been used in the first-line clinical trial. The Diagnostic and Treatment Protocol for COVID-19 (Trial Version 6) in China recommends chloroquine phosphate for the first time as an anti-coronavirus trial drug. As a classic drug for treatment of malaria and rheumatism, chloroquine phosphate has been used clinically for more than 80 years, and has also shown good results in the treatment of various viral infections. As the plasma drug concentration varies greatly among different races and individuals and due to its narrow treatment window, chloroquine in likely to accumulate in the body to cause toxicity. Among the treatment regimens recommended for COVID-19, reports concerning the safety of a short-term high-dose chloroquine regimen remain scarce. In this review, the authors summarize the current research findings of chloroquine phosphate in the treatment of COVID-19, and examine the pharmacokinetic characteristics, antiviral therapy, the therapeutic mechanism and safety of chloroquine.
Antiviral Agents ; Betacoronavirus ; drug effects ; China ; Chloroquine ; analogs & derivatives ; therapeutic use ; Coronavirus Infections ; drug therapy ; Humans ; Pandemics ; Pneumonia, Viral ; drug therapy

Objective: To estimate the early physical growth and disease in children born to HBsAg-positive mothers. Methods: This was a retrospective cohort study. Three areas as Xihu in Hangzhou, Lanxi in Jinhua, and Haiyan in Jiaxing in Zhejiang province were selected by cluster sampling. The growth outcomes of children born to HBsAg-positive mothers (exposure group) and matched 1∶1 women uninfected with HBV (control group) in 2014 were investigated and compared at birth, 6, 9, 12, and 18 months, respectively. There were totally 342 children in each group. Results: The incidences of low birth weight (LBW) for children born to exposure and control group were 1.8% (6/342), and 2.6% (9/342), respectively (P=0.433); and, rates of preterm birth were 2.3% (8/342), and 2.0% (7/342), respectively (P=0.794). The mean birth weight of children born to mothers without HBV infection (3.4±0.4) kg was dramatically higher than children in exposure group (3.3±0.4) kg (P=0.019). At 18 months, the average head circumference was significantly greater among children in control group (47.3±1.3) cm than children in exposure group (47.0±2.0) cm (P=0.038). Additional, mean birth weeks, height, weight, increases in height/weight/head circumference each month, weight/height/head circumference for age Z scores, proportion of growth retardation and low weight, disease prevalence were not observed statistically differences between two groups (P>0.05). All children born to HBsAg-positive mothers were received three-dose HBV vaccination. The rate of hepatitis B immunoglobulin for births born to HBsAg-positive was 98.8% (338/342). Mother to children transmission of HBV at 18 months was 1.0% (1/97). Conclusion No significant differences in growth development and disease prevalence were found among children born to HBsAg-positive women and women without HBV infection.

Objective To investigate the effectiveness of applying the CIPP(Context,Input,Process,and Product)model in the training of general workers in a disinfection supply center.Methods From January to March 2023,a total of 24 general workers in our hospital's disinfection supply center underwent traditional training as the pre-management phase.Subse-quently,from July to September 2023,a training system centered on the CIPP model was implemented as the post-management phase.After the training,the examination results and training evaluations were analyzed using SPSS 13.0 statistical software.Results The technical training of the general workers resulted in improved learning outcomes compared to before the training.Conclusion By applying the CIPP model in the training of general workers in a disinfection supply center,their grasp of basic knowledge and professional skills can be enhanced.This can reduce technical errors during operations,improve the quality of sterile items,and reduce the risk of nosocomial infections,thereby ensuring patient safety.

Objective:To investigate the effectiveness of mindfulness training on the emotional regulation and resilience of college students.Methods:Eighty one college students were recruited and randomly divided into mindfulness training group and control group, of which 74 completed the study (36 in mindfulness training group and 38 in control group). Participants in mindfulness training group received an 8-week mindfulness training, while participants in control group received no intervention. Participants were assessed with the Five Facet Mindfulness Questionnaire (FFMQ, measuring mindfulness level), Profile of Mood State (POMS, measuring emotion) and the Resilience Scale for Chinese Adolescent(RSCA, measuring resilience) before and after intervention (4 and 8 weeks).Results:Before and after the intervention, the interaction effects of total score of five factors mindfulness, scores of observing, actaware, non-judging, total score of resilience, scores of goal planning, help-seeking and the fatigue score were significant(all P<0.05). There were significant differences in mindfulness level, mood state and resilience scores in mindfulness training group before and after intervention(all P<0.05). There were significant differences of scores of FFMQ , POMS and RSCA post-training compared with baseline( P<0.05). The total score of FFMQ was improved significantly after 4 weeks of intervention ((114.92±11.70) vs(110.36±11.24), P<0.05), while the scores of observing((26.19±5.21) vs(24.00±5.34)), describing((23.36±4.82) vs(21.19±4.76)), non-judging((23.75±4.20) vs(22.06±4.99)) and non-reacting((19.72±3.16) vs(18.58±3.61)) were improved significantly after 8 weeks of intervention. There were significant differences of the scores of fatigue, depression-dejection, panic, vigor-activity and total mood disturbance before and after the intervention in mindfulness training group (all P<0.05). The scores of fatigue((12.31±4.08) vs(13.39±5.12)), panic((12.08±3.57) vs(13.67±4.35)) and total mood disturbance((132.94±17.71) vs(145.75±22.68)) were reduced significantly after 8 weeks of intervention (all P<0.05), while the scores of vigor-activity were improved significantly after 8 weeks of intervention ((18.31±4.61) vs (15.39±4.99), P<0.01). The participants in mindfulness training group got significantly higher total score, scores of goal planning, help-seeking, and affect control of RSCA after intervention compared with baseline (all P<0.05). Conclusion:Mindfulness training can enhance the mindfulness level and resilience of college students, decrease negative affect such as fatigue, depression, panic, and increase positive affect such as activity.

Objective To explore the delayed discount and personality characteristics of impulsive and premeditated male prisoners and their correlation.Methods A total of 120 male prisoners with aggressive behaviors were tested by Self-made General Situation Questionnaire,Impulsive / Premeditated Aggression Scale (IPAS),NEO Five-Factor Inventory (NEO-FFI),Delay Discount Task (DDT).The effective participants were ninety,including 51 in impulsive group and 39 in premeditated group.Analyzed the difference of delayed discount and personality characteristics between the two group.Results (1) In the delayed discount task,the delay discount rat (K) of the impulsive violence group (0.0278 ± 0.0555) was significantly higher than that of the premeditated violence group (0.0042±0.0078).The difference was statistically significant (t=3.004,P =0.004).(2) The scores of agreeableness (35.84 ± 4.08) and conscientiousness (37.04±4.83) in impulsive violence group were lower than that in premeditated violence group(38.46±5.53,42.31±5.96),and the difference was statistically significant (t=-2.587,P=0.011;t =-4.634,P＜0.01).(3) Correlation analysis showed that K value was not significantly correlated with all dimensions of the big five personality(P＞0.05).Conclusion Male impulsive prisoners have faster tendency to delay discounting compared with male premeditated prisoners.Lower agreeableness and conscientiousness are the personality characteristics of male impulsive prisoners.

Objective:To observe any effect of electroacupuncture (EA) on the expression of phosphorylated extracellular signal-regulated protein kinase (p-ERK1/2) and phosphorylated cyclic adenosine monophosphate response element binding protein (p-CREB) in the spinal dorsal horns of diabetics experiencing neuropathic pain.Methods:Eight rats were randomly selected from 30 healthy male Sprague-Dawley rats as the normal group (N), and the remaining twenty-two rats were treated with a single high-dose intraperitoneal injection of streptozotocin (STZ) to establish a neuropathic pain model. The rats modeled successfully were randomly divided into a model group (M, n=8) and an EA group ( n=8). In the EA group, electroacupuncture was applied at the bilateral Hou san li and Kunlun acupoints starting on the 15th day after the STZ injection. The daily sessions lasted 30 minutes for 1 week. Body weight (BW), fasting blood glucose (FBG) and paw withdrawal latency (PWL) were observed before the STZ injection and on the 7th, 14th, and 21st days afterward. The expression of p-ERK1/2 and p-CREB in the dorsal horns of the rats′ spinal cords was detected using western blotting. The count of p-CREB-positive cells in the dorsal horns and their co-localization with neurons was detected using immunofluorescence. Results:In comparison with the N group, the average BW of the M group on the 7th, 14th and 21st days after the STZ injection was significantly lower, while the average FBG was significantly higher. There was no significant difference between the M and N groups in the average PWL on the 7th day after the STZ injection, but it had decreased significantly in the M group on the 14th and 21st days. Compared with the M group, the average PWL of the EA group was significantly longer on the 21st day after the injection. The expression of p-ERK1/2 and p-CREB protein in the spines of the M group was significantly higher than in the N group. p-CREB positive cells were more numerous in the M group compared with the N group, while in the EA group they were fewer. P-CREB was co-located with neurons in the spinal dorsal horn.Conclusion:EA can alleviate neuropathic pain effectively, perhaps by inhibiting the expression of p-ERK1/2 and p-CREB in the dorsal horns of the spinal cord.