1.Application of high dose chemotherapy in therapy for non-Hodgkin's lymphoma
Cheng WANG ; Peng WU ; Xuewen WANG
Journal of Medical Postgraduates 2001;14(2):157-161
High dose chemotherapy(HDC) with stem cell transplantion(SCT) has been used widely to treat non-Hodgkin's lymphoma(HHL).Its curative effect has been confirmed by many trials.But controversy still exists,such as application of HDC for various NHL subtypes,the optimum opportunity and method for transplantation.HDC has become standard therapy for recuring cases which are sensitive to chemotherapy and was a suitable consolidation therapy after remission for high-risk cases.Allogenic bone marrow marrow transplantation,only used for some special cases,need further study.
2.Estimation of Percentage of Electrogastrogram Slow Wave Rhythm
Cheng PENG ; Zhongchao WU ; Datian YE
Space Medicine & Medical Engineering 2006;0(04):-
Objective To improve the estimation and the percentage of electrogastrogram(EGG)slow wave rhythm with power spectrum estimation and calculation rule set.Methods Chirp Z-transformation was introduced for estimation power spectrum of EGG,which can obtain both high frequency resolution and accurate estimation of power;while the power proportion of main frequency components in each segment was used to substitute for conventional method in time domain.Results The variance of proposed method was about one-eighth of that of conventional method.Incorporating the power proportion of main frequency components,the proposed method gave better results especially for those EGG signals in which abnormal frequencies appeared frequently.Conclusion As compared with the conventional method,the proposed method is less affected by segmentation process in estimating the percentage of EGG slow wave rhythm,which may promote future clinical applications.
3.Comparison of medical student's mental workload between VDT and paper-based reading.
Xiao-Wu PENG ; Zhen-Cheng XU ; Xiao-Chun PENG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2008;26(12):738-740
Adult
;
Computer Terminals
;
Humans
;
Male
;
Paper
;
Reading
;
Students, Medical
;
Workload
4.Effects of baicalin on the expression of TAFI,NF-κB,and ACE2 in the atherosclerotic rats
Minghui BI ; Cheng CHENG ; Peng LI ; Pingsheng WU
Chongqing Medicine 2015;(24):3334-3336
Objective To explore the effects of baicalin on the expression of TAFI,NF-κB,and ACE2 in the atherosclerotic rats and discuss the anti-atherosclerosis mechanisms of baicalin.Methods The subjects were healthy male Wistar rats.The rats were divided into sham operation group,model group,baicalin high dose group (1 50 mg·kg-1 ·d-1 )and baicalin low dose group (100 mg·kg-1 ·d-1 ).Plasma TAFI activity were detected with enzymatic assays.The expression of NF-κB and ACE2 were detec-ted with immunohistochemical staining.Results Compared with sham group,the rest groups of TAFI and ACE2 activity were sig-nificantly higher (P <0.05),and the expression of NF-κB,had significant decreased (P <0.05).Compared with the model group, the level of TAFI and ACE2 in baicalin drug group was significantly lower than the model group (P <0.05),and the expression of NF-κB,had significant increased.Conclusion Baicalin can reduce TAFI and ACE2 level,and upregulate the expression of NF-κB to play its role in anti atherosclerosis.
5.Changes of expression of angiogenic factor mRNA in the spinal cord of rat models of protruded intervertebral disc and the effects of electroacupuncture
Weipeng WU ; Wei LI ; Peng CHENG ; Daixun JIANG ; Wu CHEN
Acta Laboratorium Animalis Scientia Sinica 2015;(3):261-266
Objective The purpose of this study was to determine the changes of expression of angiogenic factor mRNA in the spinal cord of rats with protruded intervertebral disc and the effects of electroacupuncture , and to analyze the role of electroacupuncture in the spinal microvascular angiogenesis .Method Eighteen healthy male Sprague-Dawley rats were divided randomly into 3 groups:the electroacupuncture group , model group and sham-operated group .The protruded intervertebral disc models were generated by the left lateral and ventral spinal cord compression at T 13 using a self-made silicon sheet.Only the rats in the first group were treated by electroacupuncture once a day for consecutive 7 days.Spinal cord tissue samples were taken from the compression site at 7 days after operation .The mRNA levels of Ang-1, Tie-1, Ang-2, Tie-2, VEGF, Flt-1, caspase-3 and Tsp-1 were determined by RT-PCR, and the pathological changes of the spinal cord was examined using HE staining .Results The rats in the electroacupuncture treated group showed significantly im-proved hind leg function , a relatively complete spinal cord structure , and a clear boundary between grey and white matters . The expression levels of Ang-1, Ang-2, Tie-1, Tie-2, capase-3 and Tsp-1 in the spinal cord tissues of the model group were significantly higher than those of sham-operated group ( P<0.01 ) , but the levels of VEGF and Flt-1 between those two groups showed no significant difference (P>0.05).The expression levels of Ang-2, Tie-1, Tie-2, caspase-3 and Tsp-1 of the electroacupuncture group were significantly lower than those in the model group (P<0.01), while the expression levels of Ang-1, VEGF and Flt-1 were not significantly different between the two groups (P>0.05).All the indexes be-tween electroacupuncture and sham-operated groups showed no significant difference ( P>0.05 ) .Conclusions Our re-sults demonstrate that mRNA expression of relevant angiogenic factors were abnormal after spinal cord compression , while electroacupuncture can down-regulate the expression of Ang-2, Tie-2,Tsp-1 and caspase-3, and modulate the promoting and inhibiting factors of angiogenesis to return towards normal , therefore , to create beneficial conditions for the repair of spinal cord injuries .
6.Relationship between serum uric acid and urinary albumin excretion and carotid intima-media thickness in patients with type 2 diabetes mellitus
Jingcheng WU ; Xiaohua LI ; Qun CHENG ; Yongde PENG
Journal of Shanghai Jiaotong University(Medical Science) 2009;29(10):1210-1213
Objective To investigate the relationship between serum uric acid ( SUA) concentration and urinary albumin excretion rate ( UAER) and carotid intima-media thickness (CIMT) in patients with type 2 diabetes mellitua (T2DM). Methods The clinical data of 372 patients with T2DM. including 184 males and 188 females, were collected. The correlations between SUA and the other clinical indexes were analysed by Pearson method, and multiple regression analysis was employed to examine the effects of various factors on UAER and CIMT. Results SUA concentration was higher in males than in females with T2DM (P <0. 01). and was positively correlated with UAER both in males and females with T2DM, even after adjustment for the creatinine clearance (r = 0.24, P < 0.01 for males; r = 0. 29, P < 0.01 for females). Positive correlation was found between SUA concentration and CIMT in females (r =0. 29, P < 0. 01). Multiple regression analysis demonstrated that SUA concentration was an independent determinant of UAER for males as well as females (β=0.16, P<0.05 for males; β=0. 20, P < 0. 05 for females), and was also an independent determinant of CIMT for females (β =0.16, P <0.05). Conclusion SUA plays an important role in the progression of diabetic nephropathy and cardiovascular diseases in patients with T2DM. SUA control may provide a novel approach for the treatment of diabetic nephropathy and vascular complications.
7.The effects of repetitive transcranial magnetic stimulation of the supplementary motor area on the excitability of motor cortex in patients with Parkinson's disease
Peng ZHAO ; Yan CHENG ; Linyang CUI ; Huaying TAO ; Shijing WU
Chinese Journal of Physical Medicine and Rehabilitation 2008;30(3):168-171
Objective To study the effects of repetitive transcranial magnetic stimulation(rTMS) of the supplementary motor area(SMA)on the cortical excitability in patients with Parkinson's disease(PD).Methods Sixteen patients with PD were included in this study.The motor evoked potentials(MEP)and the N30 component of somatosensory evoked potentials(SEP) were assessed for each patient before and after 1200 pulses of rTMS of the SMA at 5 Hz and an intensity of 100% of relaxed motor threshold (RMT) for the abductor pollicis brevis.Results Ten minutes after the rTMS intervention,the peak-to-peak amplitude of the SEP component P20-N30 increased significantly(P<0.05),with the P/F index decreased simultaneously(P<0.05).The MEP amplitude increased significantly,and reached the highest value at 10min after the rTMS intervention. Conclusion 5 Hz rTMS of the SMA can improve the excitability of the SMA itself temporarily.Meanwhile,it can induce a short-lasting facilitation of the excitability of M1 connected with SMA.
8.The management of pancreatolithiasis:a report of 37 cases
Jinshu WU ; Chuang PENG ; Xinmin YIN ; Wei CHENG
Chinese Journal of General Surgery 1993;0(03):-
Objective To study the surgical treatment of pancreatolithiasis.Methods The clinical data of thirty-seven patients with pancreatolithiasis admitted to our hospital from 1994 to 2007 were reviewed.Results According to the results of imaging examination (BUS,CT,ERCP) and finding during surgery, pancreatolithiasis was classified into three types: TypeⅠ,the stones were mainly located in the head of pancreas, and Whipple procedure was the treatment of choice. TypeⅡ, the stones were mainly located in the body and tail of pancreas, and resection of the tail of pancreas alone or combined with splenectomy was the management of choice. TypeⅢ, the stones were diffusely scattered in the main duct from the head to tail of pancreas, and pancreatoduodenectomy,together with pancreatolithotomy and pancreatojejunostomy with wide anastomotic stoma was the choice of management. There was no mortality in this series. Within 2 weeks after treatment, symptoms ameliorated to different degrees in all the patients. Thirty one patients were followed up for 6 to 72 months, the results were satisfactory.Conclusions The individualized strategy, based on the type of stone location, is of great importance in the management of pancreatolithiasis. The key of surgical treatment of pancreatolithiasis is as follows: removal of pancreatoliths, excision of diseased pancreas, and adequate pancreatic drainage.
9.Seroprevalence of Toxoplasma gondii in wild birds in Northeast China by modified agglutination test
Shuizhen WU ; Haixia WEI ; Xinyu CHENG ; Ke RONG ; Hongjuan PENG
Chinese Journal of Zoonoses 2017;33(7):658-663
We detected the seroprevalence of Toxoplasma gondii (T.gondii) in the wild birds in northeast China.The wild bird's blood was collected from the cutaneous ulnar vein and the serum was isolated and used for detection of anti T.gondii antibody by modified agglutination test (MAT).Results showed that totally 179 birds' serum samples were collected.Twenty serum samples (11.17%) were positive with T.gondii antibody,which belonged to 9 orders,17 families and 31 species.The seroprevalence against T.gondii was about 5.26% (1/19) in Columbiformes,9.09% (9/99) in Passeriformes,14.29% (3/21) in Falconiformes,15.00% (5/22) in Piciformes,16.67% (1/6) in Coraciiformes,and 25.00% (1/4) in Anseriformes.Based on their feeding behavior,the seroprevalence was 12.00% (3/25) in carnivorous wild birds,10.60% (15/141) in omnivorous wild birds,and 15.38% (2/13) in the wild birds feeding on aquatic animals or plants.These wild birds also can be sorted as migratory and sedentary (non-migratory) according to their migration habits,and the serum positivity was 11.67% (14/120),and 10.71% (6/59) respectively.The seroprevalence against Toxoplasma gondii in wild birds in northeast China is about 11.17%,which indicates a common infection of Toxoplasma gondii in wild birds.