1.Influence of edaravone on MDA and expression of Hsp-70 and Bcl-2 in the perihematoma region in rats.
Lin YIN ; Xiaofeng QIU ; Sujie CHANG
Chinese Journal of Practical Internal Medicine 2002;0(08):-
Objective To study the influence of edaravone on malondialdehyda(MDA)and expression of Hsp-70 and Bcl-2 in the perihematoma region in rats.Methods A total of 120 health male rats were randomly divided into false-operation group(n=20)、intracerebral hemorrhage(ICH)-therapy group(n=50)and ICH control group.Each group was further divided into 5 subgroups respectively according to 6 h、24 h、48 h、72 h and 5d after model creation.Cerebral hemorrhage model was duplicated with the method created by Fredrik.Brain water content and MDA were measured.Expression of Hsp-70 and Bcl-2 were assayed in each group with immunohistochemical method.Results Brain water content and MDA were lower in ICH-therapy group than those in control group(P
2.Investigation of Agars Culture Mediums Sterilized by Ethylene Epoxide
Shuwen XIAO ; Xiaofeng YIN ; Yuanyuan WANG
Chinese Medical Equipment Journal 2004;0(08):-
Objective To develop a new method for sterilization in agars culture mediums,i.e.Agars culture mediums is sealed to be sterilized and preserved after resolution.Methods The effect of rudimental Ethylene Epoxide was investigated,and the germiculture results by different preserving methods were analyzed.Air sedimentation bacterium was sampled by different methods to analyze the bacterium capture rate.Results Ethylene Epoxide sterilized agars culture mediums bacterium capture rate was similar with regular agars.Conclusion Ethylene Epoxide sterilized agars culture mediums can be used in sampling of clinical treatment and other outburst incident,reducing the preparation time.
3.Modulating mechanisms of blood pressure and targets of antihypertensive drugs
Xiaofeng YIN ; Gang HU ; Hai WANG ;
Chinese Pharmacological Bulletin 2003;0(09):-
Hypertension, which has variant of pathogenesis, is one of the most widely spread chronic diseases with serious complications. Antihypertensive drugs can reduce blood pressure and alleviate or reverse cardiovascular remodeling by affecting one or more processes of blood pressure adjusting system. This review focus on targets of antihypertensive drugs associated with Renin angiotensin system, Adrenergic system, Bradykinin Prostacyclin system, Endothelia factor relative system, iron channels and the progresses in the studies of gene therapy for hypertension.
4.Changes of somatosensory evoked potentials in spinal cord injury and the influence of the timing of decompression on the recovery of spinal cord function and evoked potentials
Xiaofeng SONG ; Changcheng ZHANG ; Ruifeng YIN
Chinese Journal of Physical Medicine and Rehabilitation 2021;43(1):7-11
Objective:To explore the changes in somatosensory evoked potential (SEP) in rats with spinal cord injury (SCI) and the effects of relieving spinal cord compression at different times on recovery and the evoked potential.Methods:Seventy Sprague-Dawley rats were randomly divided into a control group of 10 and an experimental group of 60. The experimental group was further divided into a mild injury group of 10, a moderate injury group of 40 and a severe injury group of 10. Spinal cord injuries with different severities were established in the experimental group using a self-made percussion device. The rats′ SEPs were measured before the injury, and 5 minutes, 1 hour, 6 hours, 3 days and 7 days afterward. Some of the rats receiving decompression treatment.Results:The more seriously the spinal cord was injured, the longer was the latency and the smaller was the amplitude. Both differences were statistically significant. Rats with longer compression time had significantly longer incubation periods and greater decreases in the amplitude. After relieving the compression, rats from whom it had been relieved earlier had quicker amplitude recovery. For rats under compression for 30 minutes, their amplitude was the lowest seven days later.Conclusions:For spinal cord injury, longer compression time can lead to more significant changes in the latency and amplitude of SEP, with the change in the amplitude more significant than that in the latency.
5.Spectral analysis of breath sounds in asthmatics and chronic asthmatic bronchitis during acute episode
Xiaofeng XIN ; Kaisheng YIN ; Xilong ZHANG ; Yi SHI ; Xiaoping HUANG ;
Journal of Medical Postgraduates 2003;0(06):-
0.05). However, during episode the inspiratory frequencies in patients with chronic asthmatic bronchitis〔PF=(176.68 ?36.84)Hz,Q 25% =(171.32?32.64)Hz,Q 50% =(229.69? 31.87 )Hz,Q 75% =(382.36? 55.21 )Hz, respectively〕 was significantly lower than that in asthmatics 〔PF=(354.21?67.58)Hz,Q 25% =( 286.42 ? 53.68 )Hz,Q 50% =(386.77?74.18)Hz,Q 75% =(554.68?84.72)Hz,respectively, P
6.Therapeutic effects of transplantation of lentivirus-mediated artemin gene modified bone marrow mesenchymal stem cells on the rat model of Parkinson's disease
Kai LIU ; Xiaofeng YIN ; Hengwei XIANG ; Wenshuai DENG ; Peng SUN
Chinese Journal of Neurology 2015;48(8):697-703
Objective To investigate the potential therapeutic efficacy of lentivirus-mediated artemin (ARTN) gene modified bone marrow mesenchymal stem cells (MSCs) transplantation on the rat model of Parkinson' s disease (PD) and the effects on expression of brain-related proteins.Methods MSCs were isolated and cultured in vitro,transfected by recombinant lentiviral vectors carrying ARTN gene.The PD rat model established by 6-hydroxydopamine (6-OHDA) was randomly divided into 5 groups:Sham group,PD group,MSCs group,MSCs transfected with empty lentiviral vectors transplanted (LV-MSCs)group and MSCs transfected with recombinant lentiviral vectors carrying ARTN gene transplanted (LVARTN-MSCs) group.The MSCs,LV-MSCs and LV-ARTN-MSCs groups were transplanted into the left striatum of each rat model of PD and ethology tests in every group were made with intraperitoneal injection of apomorphine (APO) 2,4,6,8 weeks after transplantation.The expression of tyrosine hydroxylase (TH) protein in substantia nigra (SN) was measured by Western blotting and immunohistochemistry,and immunofluorescence showed ARTN gene modified MSCs expression in rat brain tissue.The levels of dopamine (DA),dihydroxy-phenylacetic acid and homovanillic acid in striatum of each group were detected by high performance liquid chromatography.Results After injection of APO,rotation frequency decreased in LV-ARTN-MSCs group,i.e.(179.33 ± 10.74) circles/30 min vs (235.83 ± 18.95),(203.67 ±11.50) and (206.33 ± 11.86) circles/30 min in PD,MSCs and LV-MSCs groups (q =8.828,P < 0.01;q =3.802,P < 0.05;q =4.219,P < 0.05).The percentage of TH-positive cells in SN after cell transplantation was increased significantly in LV-ARTN-MSCs group (64.05% ± 5.49%) when compared with PD group (34.18% ±3.35%),MSCs group (52.59% ±4.48%) and LV-MSCs group (50.57% ± 4.41%),respectively (q =13.280,5.135,6.028,all P <0.01).At the same time,TH protein in SN after cell transplantation was also increased obviously in LV-ARTN-MSCs group.ARTN gene modified MSCs can survive for at least 6 weeks in the rat brain of PD,mainly concentrated in the transplantation side of striatum.Eight weeks later,the levels of DA in striatum after cell transplantation were elevated significantly in MSCs group (2.34 ± 0.54),LV-MSCs group (2.28 ± 0.45) and LV-ARTN-MSCs group (2.28 ± 0.45)when compared with PD group (0.87 ± 0.07) (q =5.233,P < 0.05;q =5.020,P < 0.01;q =20.190,P < 0.01),and LV-ARTN-MSCs group showed the most significant improvement.Conclusion ARTN gene modified bone marrow MSCs transplanted into the striatum of brain may have therapeutic effects on rat models of PD.
7.Research and promoit onof severe trauma rescue standard
Yuhui KOU ; Xiaofeng YIN ; Tianbing WANG ; Baoguo JIANG
Journal of Peking University(Health Sciences) 2015;(2):207-210
SUMMARY Trauma is a global social problem, with the number of deaths up to 5.8 million all over the world annually.Currently, severe trauma has become the first cause of death in young adults in China. Nowadays, there are many problems in the trauma rescue system, including long pre-hospital transfer pe-riod , several secondary transfers, no information exchange between pre-hospital and in-hospital care, and the poor integrated treatment, which results in the situation that the overall treatment level of severe trau -ma in China is relatively low.In order to solve these problems, we carried out the research and promotion of severe trauma rescue standard, involving completing severe trauma information database , providing lo-cal rescue medical workers with standard training , and building up the information system for the linkage and warning of severe trauma.In addition, we developed and promoted the new standard system for se -vere trauma in 15cities with 124 medical centers.Due to our research, the treatment ability of severe trauma in the pilot areas was enhanced, and the mortality and morbidity of severe trauma were reduced significantly.To sum up, we had got the expected results after implementing the project .
8.The Change and Significance of Tight Junction of Pulmonary Capillary Endothelial Cells in Lung Injury
Qian YIN ; Xiaofeng HUANG ; Guangbin CUI ; Jingguo WEI
Journal of Practical Radiology 2000;0(02):-
0.05).Early pathology phenotype of BLM groups was similar as those of pneumonia groups.But in day 14th and day 28th groups,the ratio of macrophagus positive area in lung interstitium was bigger than that of control group(P
9.Clinical observation of temozolomide combined with radiotherapy for 18 cases of newly diagnosed high grade gliomas
Xueyong WU ; Xiwei ZHANG ; Xiaofeng YIN ; Ziyi ZHAO
China Oncology 1998;0(04):-
Background and purpose:The prognosis of high grade gliomas remains poor, and multidisciplinary treatment strategy has been much investigated recently. This study was to explore the efficacy of Temozolomide as first-line treatment combined with radiotherapy and followed by adjuvant chemotherapy for the treatment of newly diagnosed high grade gliomas. Methods:18 patients who had been pathologically proven to be high grade gliomas were enrolled into the study. The patients received 40 Gy/20fractions for the whole brain and followed by 20Gy/10fractions as a boost to tumor bed. All of the patients were given daily oral temozolomide 75mg/ m2 during radiotherapy. 4 weeks after radiotherapy, all of the patients received 6 cycles of Temozolomide, each cycle lasted 5 days with 28 days interval between each cycles. 150 mg/m2 of temozolomide was given for the first cycle for five days,followd by 200 mg/m2 of drug for the rest of the cycles if no significant drug related toxicities were observed. Results:Median follow-up was 12.5 months, 11 cases had either recurrence or progression, 5 of them died from the disease. The median time for disease progression-free survival was 9.8 months (95% CI, 6.1~9.8months), the median time for overall survival was 14 months (95% CI, 8.5 ~ 19.5months), 1-year overall survival rate was 55.6% ,6-month progression-free survival rate was 81.8%. there were no severe temozolomide related toxicities. Conclusion: Concurrent temozolomide with radiotherapy and followed by 6 cycles of temozolomide in the treatment of high grade gliomas had better clinical efficacy, the patients tolerated the strategy well and no severe toxicities were observed.
10.DMD gene defection analysis in 135 patients with Duchenne muscular dystrophy
Yang YAN ; Xiaofeng YANG ; Fuhua YIN ; Shengnan HUANG
Basic & Clinical Medicine 2006;0(08):-
Objective Deletion detection of Duchenne muscular dystrophy(DMD).Methods Totally 135 patients were tested through polymerase reaction of amplification with 12 dystrophin exons,polyacrylamide gel electrophoresis make gene analysis.Results The deletion of different region was found in 54 patients.Conclusion The deletion region is concentrated in 45~53 exons,the deletion of 48 exons is the peak.