Objective Objective To discuss the teaching pattern of experimental classes,and to probe the deep development of the functional subject about experimental teaching and the approach of cultivating talents.Methods Student volunteers participated in a series of activities in the summer vocation including experimental design,implementation,results reports and discussion.Results The reflection of students for the learning pattern were as follows: providing a good opportunity of learning(100%);helpful for improving the abilities of finding and dealing with problems(87.50%);different from the past physiological labs including representing special subject characteristics(93.75%),more precise form(68.75%),excellent interaction between teachers and students(75%);improving the manipulation abilities(93.75%).Deficiencies: the experimental conditions were not good enough(68.75);the teachers should give more guidance in theory and techniques(50%).Conclusions The is a meaningful educational form.Under the new experimental teaching pattern,students could use basic medical knowledge and experimental techniques to design and accomplish experiments voluntarily.This pattern is propitious for cultivating integrated capabilities of students,helping them to learn the basic approach and technique means.And it will have much developing space in experimental education in future.

AIM: To determine whether the high mobility group protein I (HMGI) is able to bind to the upstream sequence of platelet-derived growth factor B-chain gene and to characterize the HMGI-binding AT-rich regions. METHODS: Recombinant human HMGI (rhHMGI) protein was prepared and electrophoresis mobility shift assay (EMSA) was used. RESULTS: The binding of rhHMGI to PDGF-B (-1 758 / +43 bp) was observed in vitro. Two major HMGI-binding fragments -1 392 / -1 180 bp and -188 / +43 bp were identified, which contained the same AT-rich sequence TTTATAAA (-1 333 / -1 326 bp, -1 314 / -1 307 bp and -30 / -23 bp). An oligonucleotide bound to the TTTATAAA and the GAGACC, the core sequence of the shear stress response element of the PDGF-B, could also bind to the HMGI. Furthermore, HMGI facilitated the binding of NF-?B to the GAGACC in the oligonucleotide. CONCLUSION: The HMGI could bind to the upstream sequence of the PDGF-B gene via the AT-rich sequence TTTATAAA, which may play a role in the transcriptional regulation of the PDGF-B gene.

Objective To study the potential efficacy of transplanted bone marrow-derived mesenchymal stem cells (MSCs) in treating and repairing the acute lung injury in animal models. Methods MSCs were isolated from mouse bone marrow, cultrued and amplified in vitro. The lipopolysaccharide (LPS) was inhaled through postnasal tract to cause acute lung injury in mice and the MSCs labeled by Brdu were administrated via vein into the mice. The migration and differention of the cells were identified by immunostaining and double immunostaining. The pathological changes, pulmonary edema index and the content of IL-1β in lung homogenate were used to accese the therapeutical effect of MSCs. Results The cultured MSCs dispalyed a positive CD44 and a negative CD34. The Brdu-labeled cells were detected in the lungs of the recipient 4 days after transplantation, indicating its origin of MSCs. Theses cells also exhibited characteristics of aveolar epithelials, expressing the cytokeratin-the marker of epithelium. Compared with the injuried ones, the mice treated with MSCs showed a decreased pulmonary edema in-dex and IL-1β content in the lung homogenate. Conclusion These data suggest a therapeutical effects of MSCs in treating and repairing the mouse acute lung injury.

ObjectiveTo study the scope of excison in breast-conserving surgery for breast carcinoma.MethodsClinical data of 275 breast cancer patients undergoing breast-conserving surgery in t he First Affiliated Hospital of Nanjing Medical University,the Affiliated Zhenjiang Hospital of Jiangsu University and Changzhou Traditional ChineseMedicine Hospital were retrospectively analyzed.The operation procedure and postoperative adjuvant therapy were carried out with the same protocol.Local and general conditions of patients were followed up regularly.Results271 out of 275 patients got follow-up.The follow-up rate was 98.5％.The follow-up time ranged from 1 month to 117 months,median follow-up time was 34 months.Six patients died of distant metastasis,2 with local recurrence.The 1-year,3-year,and 5-year overall survival rates were 99.5％,98.1％,and 95.7％,respectively.ConclusionsIt is safe to excise 1 cm normal breast tissue with clear margin confirmed by frozen section,followed by postoperative adjuvant therapy,endocrine therapy,and radiotherapy,this improves the life quality of patients with breast cancer.It is safe and effective to determine whether the disease is multicentric or multifocal by mammogram plus clinical breast examination.

AIM and METHODS: The effects of angiotensin II(AngII) on the activation of three transcription factors were investigated by using EMSA and western-blot methods in endothelial cells respectively. RESULTS: The EMSA results showed that AngII stimulation could increase NF-κB, SP-1 and AP-1 activation in ECV304, which suggested that activity changes in these three transcription factors could partly contribute to the dysfunction of endothelial cells.The binding affinity of NF-κB, SP-1 and AP-1 with corresponding oligonucleotides in AngII-treated ECV-304 were respectively 10.98,3.89,1.33 times as large as in control. The nuclear appearance of AngII-activated NF-κB was examined by western-blot, which corroborates our results from EMSA analysis. While as the protein appearance of AP-1 and SP-1 in nucleus, were little higher than the control group. The result of western-blot suggested that AngII-induced EC activation of these three transcription factors maybe mainly due to the enhanced binding ability to its corresponding cis-acting factors. CONCLUSION: NF-κB, a ubiquitously exposed nuclear transcription factor, is involved, together with SP-1,AP-1, in the regulation of endothelial cell dysfunction related to cardiovascular diseases such as atherosclerosis and hypertension.

Objective:To explore the effect of prostaglandin E2 (PGE2) on the expression of high mobility group box-1 protein (HMGB1) in peritoneal macrophages of septic mice and its possible mechanisms.Methods:Ihe mouse peritoneal macrophages were isolated and cultured by conventional methods.The model of inflammation was established by using lipopolysaccharide (LPS) to incubate with mouse peritoneal macrophages.The PGE2,prostaglandin E receptor (EP) 4 agonist,EP4 RNAi,and DN.CREB inhibitory plasmid were used to interfere with the LPS-treated mouse peritoneal macrophage.The levels of HMGB 1 was determined by Western blot.Results:Compared with LPS alone treatment,the expression of HMGB 1 in peritoneal macrophages was increased obviously after 24 h by treatment with PGE2 and LPS,and it was also increased after the combined treatment of EP4 receptor agonist with LPS for 24 h (both P<0.05);compared with the PGE2+LPS treatment,the level of HMGB1 was decreased after knockdown of EP4 receptor expression (P<0.05);compared with EP4 receptor agonist +LPS treatment,there was no difference in HMGB1 levels in mice after the treatment with DN.CREB plasmid to suppress CREB function (P>0.05);compared with LPS alone treatment,the combined treatment of EP4 receptor agonist with LPS for 24 h could up-regulate the phosphorylation of epidermal growth factor receptor (EGFR) and protein kinase B (Akt) thr308 (P<0.05),which were blocked by EGFR inhibitor.Once Akt specific inhibitor was used before EP4 and LPS treatment,the expression of HMGB1 was declined (P<0.05).Conclusion:PGE2 can up-regulate the expression of HMGB1 in sepsis of peritoneal macrophages through EP4 receptor,which may be related to the activation of EGFR/PI3K/Akt signaling pathway.

Objective To assess the policies and programs on the capacity of prevention and control regarding non-communicable diseases (NCDs) at the Centers for Disease Control and Prevention(CDCs)at all levels and grass roots health care institutions,in China. Methods On-line questionnaire survey was adopted by 3 352 CDCs at provincial,city and county levels and 1 200 grass roots health care institutions. Results 1)On policies:75.0% of the provincial governments provided special fundings for chronic disease prevention and control,whereas 19.7%city government and 11.3% county government did so. 2) Infrastructure:only 7.1% county level CDCs reported having a department taking care of NCD prevention and control. 8 263 staff members worked on NCDs prevention and control,accounting for 4.2% of all the CDCs’personnel. 40.2% CDCs had special fundings used for NCDs prevention and control. 3)Capacity on training and guidance:among all the CDCs,96.9%at provincial level,50.3%at city level and 42.1%at county level had organized trainings on NCDs prevention and control. Only 48.3% of the CDCs at county level provided technical guidance for grass-roots health care institutions. 4) Capacities regarding cooperation and participation:20.2%of the CDCs had experience in collaborating with mass media. 5)Surveillance capacity:64.6% of the CDCs at county level implemented death registration,compare to less than 30.0% of CDCs at county level implemented surveillance programs on major NCDs and related risk factors. In the grass roots health care institutions,18.6% implemented new stroke case reporting system but only 3.0%implemented program on myocardial infarction case reporting. 6)Intervention and management capacity:36.1% and 32.2% of the CDCs conducted individualized intervention on hypertension and diabetes,while less than another 20%intervened into other NCDs and risk factors. More than 50% of the grass roots health care institutions carried follow-up survey on hypertension and diabetes. Rates on hypertension and diabetes patient management were 12.0% and 7.9%,with rates on standard management as 73.8%and 80.1%and on control as 48.7%and 50.0%,respectively. 7) Capacity on Assessment:13.3% of the CDCs or health administrations carried out evaluation programs related to the responses on NCDs in their respective jurisdiction. 8)On scientific research:the capacity on scientific research among provincial CDCs was apparently higher than that at the city or county level CDCs. Conclusion Policies for NCDs prevention and control need to be improved. We noticed that there had been a huge gap between county level and provincial/city level CDCs on capacities related to NCDs prevention and control. At the grass-roots health care institutions,both prevention and control programs on chronic diseases did not seem to be effective.

Objective:To investigate the application value of advance care planning among patients with chronic heart failure, so as to provide reference for the clinical practice of advance care planning.Methods:A total of 62 chronic heart failure patients from October 2017 to November 2019 in Fuwai Central China Cardiovascular Hospital were assigned to control group and experimental group according to the enrolled time, with 31 cases in each group. The patients in the control group from October 2017 to October 2018 recieved routine nursing, the experimental group from November 2018 to November 2019 carried out advance care planning based on the routine care. Before and after 3 weeks of intervention, the fatigue symptom and psychological condition were assessed by the Multidimensional Fatigue Inventory (MFI-20) and Symptom Checklist 90 (SCL-90), respectively.Results:There was no significant difference in the score of MFI-20 and SCL-90 before intervention between the two groups( P>0.05). After 3 weeks of intervention, the mental fatigue scores and total scores in MFI-20 were (8.23 ± 2.77), (51.00 ± 5.03) points in the experimental group, significantly lower than those in the control group (10.23 ± 2.58), (54.06 ± 5.50) points, the differences were statistically significant ( t=2.94, 2.29, all P<0.05). After 3 weeks of intervention, the somatization, obsessive symptoms, depression, anxiety, hostility scores and total score of SCL-90 were (1.28 ± 0.14), (1.43 ± 0.09), (1.19 ± 0.12), (1.13 ± 0.08), (1.33 ± 0.07), (121.00 ± 3.68) points in the experimental group, significantly lower than those in the control group (1.82 ± 0.44), (1.73 ± 0.58), (1.69 ± 0.12), (1.78 ± 0.13), (1.39 ± 0.10), (144.69 ± 9.09) points, the differences were statistically significant ( t values were 2.76-23.06, all P<0.05). Conclusions:Advance care planning can effectively alleviate fatigue symptom and improve psychological condition of patients with chronic heart failure.

Objective:To investigate the effects of intervention mapping on cardiopulmonary function for patients with acute heart failure in compensatory period, so as to provide references for their early rehabilitation activities.Methods:A total of 90 patients with acute heart failure admitted to Fuwai Central China Cardiovascular Hospital from October 2018 to October 2019 were enrolled in the present study. They were divided into experimental group and control group according to draw-lots-method, with 45 cases in each group. The control group received the routine care and activity plan, while the experimental group implemented intervention mapping-based stage early rehabilitation program. The indicators included 6MWT, forced expiratory volume in one second (FEV 1), brain natriuretic peptide (BNP) as well as Minnesota Living with Heart Failure Questionnaire (MLHFQ), and the intervention effects were compared between the two groups. Results:There were no significant differences in FEV 1, 6MWT, BNP and MLHFQ scores between the two groups at admission ( P>0.05). On discharge, FEV 1, 6MWT were (2.17±0.44) L, (273.09±55.80) m in the experimental group, significantly higher than (1.94 ± 0.39) L and (236.44 ± 50.99) m in the control group; the plasma BNP were (676.79 ± 78.75) ng/L in the experimental group, significantly lower than (736.05 ± 78.77) ng/L in the control group; in addition, the physical demention, emotional dimenson, other demension scores and total scores of MLHFQ in the experimental group were (65.39 ± 5.02), (67.56 ± 4.99), (66.05 ± 4.16) and (66.33 ± 2.63) points, significantly higher than (59.79 ± 5.94), (64.33 ± 5.93), (62.76 ± 4.47), (62.36 ± 2.98) points in the control group, the differences were statistically significant ( t values were 2.56-6.51, all P<0.05). Conclusions:Designing and implementing stage early rehabilitation program using intervention mapping can promote cardiopulmonary function and quality of life of patients with acute heart failure in compensatory period.

Objective To observe the characteristics of brain activation of multiple sclerosis (MS) patients and healthy controls at functional magnetic resonance imaging (fMRI) with olfactory stimulation,determine the locations of activation in areas of olfactory center and explore the MS olfactory related network.Methods Eighteen MS patients from the Affiliated Hospital of North Sichuan Medical College from February 2017 to March 2018 were enrolled as MS group,and 20 matched healthy adults during the same period served as controls.The Visual Analogue Scale was used to evaluate olfactory function in all subjects,the rest structure MRI was performed first,and volatile gases of lavender and rose solution were used to alternately stimulate olfactory during fMRI scanning.The brain activation was obtained by using matlab2013a and SPM8 softwares.The distribution and quantity of demyelination lesions were counted on T2 weighted image,and Spearman correlation analysis was done with SPSS 17.0 software package.Results The activated brain areas in the healthy control group included bilateral middle frontal gyrus,bilateral insula,bilateral supramarginal gyrus,bilateral orbitofrontal gyrus,right thalamus,right central anterior gyrus,bilateral cingulated gyrus,bilateral hippocampus,bilateral amygdala and bilateral superior frontal gyrus (t =2.11,P＜0.05).The activated brain areas in the MS group included right cerebellum,left insula,left superior temporal gyrus,right inferior frontal gyrus (t=2.19,P＜0.05).Compared with the control group,the MS group showed statistically significant decrease in activated values in right insula,right amygdala,right inferior frontal gyrus,right frontal middle gyrus,and the left supramarginal gyrus (t=2.04,P＜0.05).The distribution and number of demyelination lesions and major activation of brain regions with olfactory in the MS group demonstrated no significant correlation (r=-0.524,P=0.054).Conclusions Multiple brain areas involved in the olfactory processing and olfactory-related brain network existed.The activation of olfactory center had dominance in the right brain.The activation of the brain area in the MS group was significantly reduced,and the activation voxel and activation intensity were weakened.The olfactory-related brain network changed in MS patients.The distribution and number of demyelination lesions had no significant effect on the major activation of brain regions with olfactory stimulation.