1.Research on function of Multi-channel Brain Magnetic Stimulation Machine in auditory memory
Mei XU ; Xuemin WANG ; Feng CHEN
Chinese Medical Equipment Journal 2003;0(12):-
Objective:To check the clinical effect of Multi-channel Brain Magnetic Stimulation Machine.Method:Sixteen volunteers are divided into two groups.Members of the first group which is the corresponding group listen to news material in the sober state and then answer the questionnaire.At last their EEG is collected.Members of the second group listen to the same material in the sober state and they are stimulated at the forehead and temporal area by Multi-channel Brain Magnetic Stimulation Machine at the same time.They also answer the questionnaire under the magnetic stimulation at forehead and their EEG is collected,too.Result:Answers of the second group are obviously better than the first group.The power spectrum of EEG at the forehead,temporal,parietal region and even the whole brain area in the first group is stronger than that of the second.Conclusion:Multi-channel Brain Magnetic Stimulation Machine excites brain in a way and then helps people complete the job better.
2.The Analgesic Effect of Radix Curcuma Extracts on Mice
Mincao GONG ; Junjie XU ; Mei CHEN
Journal of Zhejiang Chinese Medical University 2006;0(02):-
[Objective]To discuss the analgesic effects of Radix Curcuma extracts on mice.[Method]The writhing tests were adopted to observe the mice writhing times.[Results]The Radix Curcuma extracts middle-dose group can obviously inhibit the mice average writhing times,with statistically significant differences in comparison to contral group,P
3.Clinical efficacy and safety of Qingyi Decoction administered by nasojejunal tube for the treatment of severe acute pancreatitis
Ke CHEN ; Tie XU ; Songtao MEI
Chinese Journal of Emergency Medicine 2016;25(11):1439-1442
Objective To compare the clinical efficacy and safety of Qingyi Decoction (a preparation of Chinese herbal medicine) between two different routes of the administration by using nasogastric tube or nasojejunal tube for treatmnent of severe acute pancreatitis (SAP).Methods A total of 79 SAP patients enrolled were randomly divided into nasogastric tube group (n =41) and nasojejunal tube group (n =38) according to the random number table method.In addition to the conventional therapy,they were treated with Qingyi Decoction administered by using nasogastric tube or nasojejunal tube.Results After treatment for 14 days,the levels of C-reactive protein (CRP),procalcitonin (PCT) and white blood cell count (WBC),urinary bladder pressure,and APACHE Ⅱ score in nasojejunal tube group were significantly lower than those in nasogastric tube group (P < 0.05).The time required for the recovery of bowel sounds,length of abnormal serum amylase persistence,the duration of abdominal pain,the time necessary for mechanical respiratory support in nasojejunal tube group was significantly shorter than those in nasogastric tube group.The blood fungus infection rate and pulmonary fungus infection rate in nasojejunal tube group were significantly lower than those in nasogastric tube group,and 28-day survival rate in nasojejunal tube group was significantly higher than that in nasogastric tube group (P < 0.05).Conclusion The nasojejunal tube route for the administration of Qingyi Decoction for the treatment of SAP can effectively alleviate the severity of patient's condition,shorten the time required for improving clinical symptoms,reduce the incidence of morbidity and mortality,and it is worthy of further popularization in clinical practice.
4.Application of two-way shrinking field radiotherapy with high intensity in non-small cell lung cancer with stage Ⅳ
Quankui LI ; Xingxiu CHEN ; Mei XU
Clinical Medicine of China 2015;31(5):426-428
Objective To investigate the advantage of two-way shrinking field radiotherapy with high intensity on non-small cell lung cancer(NSCLC) with stage Ⅳ.Methods Forty-two old NSCLC patients with stage Ⅳ were selected as our subjects who cannot performed surgery in the People's Hospital of binzhou.The patients all underwent CT-scan and the CT information was input TPS planning system in order to outlined gross tumor volume(GTV1) and make plan 1 with the first three-dimensional conformal radiotherapy 50 Gy/25 F~ 54 Gy/27 F.Then the 2nd CT-scan was performed to sketch GTV2 and make Plan 2.The detail of Plan 2 was that the amount of radiation was increased to the total 66 Gy/33 F ~ 70 Gy/35 F,two radiotherapy plans in accordance with 1 times/d,5 times/weeks;chemotherapy with paclitaxel 40 mg/m2,weekly radiotherapy before the intravenous infusion,once every 6 weeks.Results The median of reduce tumor size between GTV2 and GTV1 was 68.85 cm3 and relative reduce tumor size was 28.32%.As to short-term effect,there were 5 cases with total recovery(1 1.9%),25 cases with partly recovery(59.5%),10 cases with stable stage (23.8 %),2 cases with development(4.8%).Local control rate regarding of tumor development was 71.4% at 1-yrea period and 23.8% at 2-year periods.Survival rate was 73.8%(31/42) at 1 year and 28.6%(12/42) at 2-year.Side effects included radiation esophagitis and radiation pneumonitis based,radiation-induced lung injury.Condusion The therapy scheme of two-way three-dimensional conformal radiation dosage treatment of NSCLC,GTV and re-plan outlined dosage can increase the target dose,radiation therapy to reduce side effects.
5.HPLC determination of ursolic acid in Kangzhitong Jiangzhi Capsule
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(08):-
Objective: To establish a method for HPLC determination of ursolic acid in Kangzhitong Jiangzhi Capsule.Methods: HPLC,chromatographic column Kromasil C18(4.6mm?250 mm,5?m)and the mobile phase consisted of methyl alcoholwater-ammonium acetate-acetonitrile(9∶25∶0.8∶65) were used to find ursolic acid.The flow rate was 1.0ml?min and the detector wave-length was set at 215nm.Results: The calibration curve was in good linearity over the range of 64-320?g/ml(r=0.9996).The average recovery rate was 100.10%,with RSD=1.32%.Conclusion: This method is simple,accurate and reproducible so it can be used to determine the content of ursolic acid in Kangzhitong Jiangzhi Capsule.
6.Histological change of infiltrating inflammatory cells in sun-exposed and-unexposed skin
Yuying KANG ; Mei JU ; Xu CHEN ; Kun CHEN ; Heng GU
Chinese Journal of Dermatology 2011;44(7):476-478
Objective To investigate the role of infiltrating inflammatory cells in photoaging process by comparing the type and number of these cells in sun-exposed and-unexposed skin.Methods The expression of CD3,CD45RO and CD68 were detected by immunohistochemieal staining in 46 paraffin-embeded skin samples from the extensor forearms(sun-exposed)and upper-inner arms(sun-unexposed) of 23 healthy female volunteers.The number of positive cells in sun-exposed and -unexposed sites was counted and statistically tested by paired samples t test,and Pearson correlation analysis was performed to assess the relationship between the number of positive cells and age of these volunteers.Results The number of cells positive for CD3,CD45RO and CD68 per square millimetre in sun-exposed skin was significantly higher than that in sun-unexposed skin(48.91±13.173 vs.40.61±11.571,46.83±12.915 vs.38.00±10.109,85.43±22.346 vs.73.48±16.208,respectively,P<0.01 or 0.05).The number of cells positive for CD3 and CD45RO increased significantly with age (r=0.557,0.555,respectively,both P<0.01) in the sun-exposed skin but not in sun-unexposed skin,and the number of CD68-positive cells was uncorrelated with age in either sunexposed or -unexposed skin.Conclusion T lymphocytes and macrophages may play a role in the process of photoaging.
7.Application analysis of XT-4000i blood cell analyzer in body fluid cell count
Junjie CHEN ; Rui SHI ; Mei XU ; Fei CHEN
International Journal of Laboratory Medicine 2014;(23):3255-3256
Objective To investigate the application value of the XT-4000i blood cell analyzer in body fluid cell count.Methods 113 cases of body fluid specimen were collected in the hospitalized patients from September 2013 to February 2014.Then RBC and WBC counts in the collected specimens were detected whitin 1 h by XT-4000i blood cell analyzer and the manual detection method, the RBC count values were divided into 3 levels:L1 100~1 000 ×106/L,L2 1 001 ×106 ~100 000 ×106/L and L3 > 100 000 × 106/L;WBC count values were divided into 2 levels:L1 1~50×106/L and L2 >50×106/L.The correlation between the two kinds of test methods was analyzed.Results The results of RBC and WBC counts detected by the XT-4000i blood cell analyzer and the manual method had a higher correlation.The correlation coefficients were 0.931,0.996,0.865,0.942 and 0.988.Conclusion The XT-4000i blood cell analyzer can be applied in clinical fluids cell count.
8.Development and Application of New Substrate-stretching Device for Cultured Cells
Dong XU ; Qiping HUANG ; Chong MEI ; Xiao CHEN ; Junpei XIA
Chinese Medical Equipment Journal 1989;0(04):-
Objective To simulate the mechanical environment of cells in vivo and study cellular signal transduction mechanisms. Methods A device was developed which could provide high cell yield, control the time, strain magnitude, direction and frequency of stretch, and applied 10% cyclic strain to cell culture substrate with stretch frequency at 1Hz. Results After being stretched, morphology and cytoskeleton of cells were altered. The major axis of cells and the alignment of stress fibers were vertical to the orientation of cyclic stretch. Conclusion This device provides versatile options for the study on the cellular responses of mechanical loading.
9.Orbital implantation of hydroxyapatite: An analysis of 23 cases
Yue HE ; Jie CHEN ; Xibo ZHANG ; Mei XU
Chinese Journal of Tissue Engineering Research 2007;0(12):-
This study was designed following eyeball extirpation to evaluate the therapeutic effects of hydroxyapatite and to explore the causes and preventing from exposure during orbital implantation. A total of 23 cases with autologou sclera and muscular suture selected from Department of Ophthalmology, Affiliated Hospital of Luzhou Medical College between January 2005 and December 2007 were retrospectively summarized and analyzed. Seventeen cases were implanted initially and the other 6 cases received secondary implantation. For the implantation with scleral-wrap, a 360? peritomy, limbic sclerotomy and full keratectomy were performed with corneoscleral scissors. Uveal tissue was completely removed. Posterior sclera was radially incised, and the hydroxyapatite orbital implant was implanted. Anterior sclera was sutured completely. Other implantations without using sclera-wrap were performed with the hydroxyapatite orbital implant in muscle cone and four rectal muscles were sutured to the hole of the hydroxyapatite orbital implant. Mattress suture of fascia tissue with double staggered position was performed in all the implantations. Conjunctiva was sutured discontinuously. This implant provided satisfactory functional motility and stability. Two cases developed implant exposure, suggesting that hydroxyapatite was the implant of choice for cosmesis following surgical removal of the eyeball, or enucleation. The complication rate is low and implant exposure, if it occurs, can be easily managed.
10.Preliminary study on relationship between renin-angiotensin -aldosterone system and hypertension in coal miners
Renbiao MEI ; Lin CHEN ; Chaopin LI ; Yurong FANG ; Guangx XU
Chinese Journal of Pathophysiology 2000;0(12):-
AIM: To study the relationship between renin-angiotensin-aldosterone system and hypertension in coal miners. METHODS: The coal miners received questionnaire investigation and their blood pressure, height and weight were measured, plasma renin activity(PRA), plasma angiotensin Ⅱ(AngⅡ) and aldosterone(ALD) were tested by means of radioimmunoassay in coal miners with hypertension and nor-hypertension. RESULTS: It was found that levels of PRA,AngⅡ and ALD were significantly higher in hypertensive group than in nor-hypertensive group(all P