2.Design of a flexible sensor array for pulse diagnosis in traditional Chinese medicine
Junqi ZHUO ; Lei WANG ; Hong SHA
International Journal of Biomedical Engineering 2015;38(1):15-18,后插4
Objective To acquire high spatial resolution two-dimension pulse pressure distribution for objectifying research of pulse diagnosis in traditional Chinese medicine.Methods A sensor array with flexible packing was designed and implemented.The array was formed on a circle substrate with 37 silicon piezoresistive pressure sensors,which were distributed as equilateral triangles with 1.95 mm pitch.The diameter of the substrate was 15 mm.By using flexible packing,the array had the hardness similar to that of human finger,which made this method closer to the traditional Chinese diagnosis.After differential amplifying,37-way pulse pressure signals were digitalized and reconstructed to obtain the pulse pressure distribution.Results With the application of the sensor array,the pulse pressure signals were measured and transformed into pulse pressure distribution.Conclusions The experimental result contains the relevant characteristics of traditional Chinese pulse diagnosis' description,providing a new way for objective study of traditional Chinese pulse diagnosis and further study.
3.Effect of astragalus membranaceus on serum free amino acids and chemokines in patients with rheumatoid arthritis
Hewei ZHUO ; Lei ZHANG ; Hao LU
Chinese Journal of Biochemical Pharmaceutics 2017;37(1):107-109
Objective To study and observe the effect of astragalus membranaceus on serum free amino acids and chemokines in patients with rheumatoid arthritis. Methods 60 patients with rheumatoid arthritis in Lishui Hospital of traditional Chinese medicine from October 2014 to May 2016 were selected as the research object,and 60 patients were divided into control group and observation group with 30 cases in each group,according to the method of random number table,the control group were treated with conventional treatment of rheumatoid arthritis,the observation group were treated with astragalus mongholicus on the basic of control group,then the serum free amino acids and chemokines of two groups before the treatment and at 10th,20th,40th and 60th day after the treatment were respectively detected and compared. Results The serum free amino acids and chemokines of two groups before the treatment were compared, while the serum chemokines of observation group at 10th,20th,40th and 60th day after the treatment were all lower than those of control group,the serum free amino acids glutamic acid,asparagic acid and phenylalanine were all lower than those of control group,leucine,γ-aminobutyric acid, glycine and taurine were all higher than those of control group,the difference was statistically significant (P<0.05). Conclusion The influence of astragalus mongholicus for the serum free amino acids and chemokines of patients with rheumatoid arthritis is better,so its application in the patients with rheumatoid arthritis is higher.
4.The effects of methotrexate on the neointimal formation after balloon injured arteries in rabbits
Chinese Journal of Interventional Cardiology 1996;0(01):-
Objective To study the effect of methotrexate on the neointimal formation after arterial balloon injury. Methods Male rabbits were randomized into four groups: MTX 0.5 mg/kg per week, MTX 1.5 mg/kg per week, MTX 5 mg/kg per week and the control. Drugs were administered by intramuscular injection. Rabbit carotid arteries were harvested 2 and 4 weeks after injury. Results Histologically, the intimal areas were reduced significantly in MTX treated animals compared with the controls. The VSMC proliferation in injured vessels was identified by immunostaining for proliferating cell nuclear antigen (PCNA). In comparison, PCNA-positive cells in both intima and media were significantly reduced by treatment of MTX. But MTX did not enhance reendothelialization in the injured carotid arteries as determined by Evans blue stain.Conclusion Low dosage of MTX could attenuate neointimal formation after arterial injury by inhibiting VSMC proliferation.
5.A correlativity study of amplitude of low frequency fluctuation change of resting-state brain activity and aphasia quotient in aphasia patients after stroke
Chunxing LI ; Hua LI ; Bingzhi ZHUO ; Lei GAO
Chinese Journal of Behavioral Medicine and Brain Science 2013;(6):517-519
Objective To study a correlativity of amplitude of low frequency fluctuation change of restingstate brain activity and aphasia quotient in aphasia patients after stroke and investigate recovery and mechanism of the aphasia.Methods Adopting amplitude of low-frequency fluctuation (ALFF) in blood oxygenation level dependent functional MRI(BOLD-fMRI) and Siemens version 3.0T MR Scanner was used to obtain 12 aphasia patients and 20 normal volunteers of fMRI data.The fMRI data were processed with the software of DPARSF and analyzed by ALFF,and group analysis was performed with two sample t-test by REST software to obtain increased and decreased ALFF map.Brain regions,in which,ALFF of aphasia group was lower than that of normal control group,were done correlation analysis with aphasia quotient.Results As compared with those in normal subjects,the regions showing decreased ALFF in aphasia patients were distributed in left middle temporal gyrus,left medial prefrontal gyrus,right cerebellum,which were positively correlated with aphasia quotient (r Roi1 =0.48,r Roi2 =0.36,r Roi3 =0.28,respectively);while the regions showing increased ALFF covered left occipital lobe,precentral gyrus,insula,right precuneus.Conclusion As compared with those in normal subjects,the regions positively correlated with aphasia quotient show decreased ALFF in aphasia patients,which are one of the mechanisms of aphasia.The regions increased ALFF in aphasia patients may participate in language function of recovery.
6.Application of maxillofacial trauma diagnosis and treatment expert system in maxillofacial trauma PBL teaching
Lei TIAN ; Hongtao SHANG ; Zhuo QIN ; Xinghua FENG
Chinese Journal of Medical Education Research 2011;10(4):414-417
Objective Oral and Maxillofacial trauma Diagnosis and Treatment Expert system (OMDTES)was used in maxillofacial trauma PBL teaching to improve the quality of PBL teaching,and perfeet the assessment criteria, Methods OMDTES was applied in two procedures of maxillofacial injury PBL teaching activity:the preparation of lesson plan and assessment criteria.Then a questionnaire was designed to assess the effect of this new mode of PBL teaching.Results The new teaching model is welcomed by students and can improve students'interest in learning,the satisfaction of teaching and ameliorate method of assessment of PBL teaching.Conclusion Applying OMDTES in oral and maxinofacial injury PBL teaching has special advantages in raising the leavnevs'activity of learning,training their ability of chnical thinking and analysis.And it is worthy of further research and amelioration.
8.Image Quality Assessment of Brain CT with Different Scanning Modes
Xiaoyi LIU ; Weiwei QI ; Zhuo LIU ; Lei CHEN ; Nan HONG
Chinese Journal of Medical Imaging 2017;25(6):418-421
Purpose To analyze the image quality of brain CT with 256-slice wide detector axial scanning mode,routine axial scanning mode and spiral scanning mode,and to provide a more effective brain CT examination method for patients.Materials and Methods The prospective study was conducted on 90 patients accepting routine brain CT examination,and they were randomly divided into three groups.CT examination with 160 mm axial scanning mode,40 mm axial scanning mode and 40 mm spiral scanning mode were respectively conducted using GE Revolution CT.The scanning condition was adjusted to remain constant radiation dose,and then the image quality was analyzed.CT attenuation of gray and white matter,contrast-to-noise ratio (CNR) of white-gray matter and image noise of the three scanning modes were compared.Subjective scoring on image quality of the three scanning modes was also performed.Results On body lateral cerebral ventricle level,there were no significant difference in CT attenuation of gray and white matter and CNR (P>0.05).On centrum semiovale level,the CT attenuation of gray matter [(31.71 ± 1.82) HU],white matter [(22.97± 1.50) HU] and CNR 2.05±0.42 of 160 mm axial scanning mode was significantly different from the other two scanning modes (F=26.74,47.16 and 3.85,P<0.05).On centmm semiovale level,image noise of 160 mm axial scanning mode was lower than the other two kinds of scanning methods (F=6.31,P<0.05),in the basal ganglia and posterior fossa there were no statistically significant differences in the image noise between the three scanning modes (P>0.05).The subjective score of the three scanning modes all met the diagnostic requirements,and there was no significant difference (P>0.05).The effective dose and scanning time of 160 mm axial scanning mode was lower than those of the other two scanning modes,and the X-ray utilization was higher.Conclusion 160 mm wide detector axial scanning mode is more suitable for brain CT scan,and it can be used as the preferred scanning mode in the emergency and among non-cooperative patients.
9.Clinical observation of vitamin B12 eye drops for vision fatigue caused by visual display terminals
Qiang, GUO ; Hong-Bin, YANG ; Zhuo-Lei, FENG
International Eye Science 2016;16(7):1329-1331
AIM: To investigate the clinical effect of vitamin B12 eye drops for vision fatigue caused by visual display terminals (VDT).
METHODS: Totally 50 patients (100 eyes) with vision fatigue caused by VDT were averagely divided into two groups. The control group were treated with normal saline,the treatment group were treated with vitamin B12 eye drops, 3 times per day, one drop each time, continuous for 60d. Accommodative parameters and Schirmer Ⅰtest were measured and analyzed before and after treatment.
RESULTS: After treatment, the results of Schirmer Ⅰtest, accommodative amplitude and accommodative facility of the treatment group were higher than those of the control group ( all P < 0. 05 ). And the results of accommodation lag of the treatment group were lower than those of the control group (P<0. 05).
CONCLUSION: Vitamin B12 eye drops can lessen symptoms of dry eye, improve accommodative function and treat vision fatigue caused by VDT.
10.Therapy effect of standard prescription on ametropic amblyopia in hyperopic children
Wen-Yuan, ZHUO ; Chang-Chun, SHI ; Yu-Lei, LIN
International Eye Science 2014;(6):1026-1029
AIM: To observe the therapy effect of standard prescription on ametrop amblyopia in hyperopic children.
METHODS: This study included 270 cases ( 54 eyes ) with complete data, and followed up 24mo. All the amblyopic children were given standard prescription and were divided into progressive addition glass group, under corrected group and full corrected group. And all were observed for their therapy effect and the average healing time in low hyperopic, moderate hyperopic and high hyperopic children with ametropic amblyopia respectively.
RESULTS: In low hyperopic children, the difference of the therapy effect of the three corrected methods were insignificant in two years. The meam cure time of the three corrected methods were ( 7. 33 ± 2. 11 ) mo in progressive addition glass group;(9. 0±3. 71)mo in under corrected grope;(12. 5±5. 17) mo in full corrected group. Three groups of independent samples by paired t-test showed: the difference between progressive addition glass group and under corrected grope (t=1. 66, P>0. 05) was statistically insignificant; the difference between progressive addition glass group and full corrected grope ( t = 3. 92, P < 0. 01 ) was statistically significant; the difference between under corrected grope and full corrected grope ( t = 2. 33, P < 0. 05 ) was statistically significant. In moderate hyperopic chileren, the differences of the therapy effect of the three corrected methods were significant in two years (χ2=6. 75;P<0. 05). The difference between progressive addition glass group and under corrected grope (χ2 = 6. 3; P < 0. 01 ) was statistically significant; the difference between progressive addition glass group and full corrected grope (χ2=8. 1;P<0. 005) was statistically significant. The mean cure time of the three corrected methods were ( 14. 0±4-87) mo in progressive addition glass group; ( 16. 93±4-58)mo in under corrected grope; (17. 93±4. 42) mo in full corrected group. Three groups of independent samples by paired t-test showed: the difference between progressive addition glass group and under corrected grope (t=2. 88, P<0. 01) was statistically significant; the difference between progressive addition glass group and full corrected grope ( t= 3. 9, P<0. 01 ) was statistically significant;the difference between under corrected grope and full corrected grope ( t = 1. 01, P > 0. 05 ) was statistically insignificant. In high hyperopic amblyopic children, the difference of the therapy effect and the healing time of the three corrected methods were insignificant in two years. (χ2=2. 43, P>0. 05. t=1. 49, P>0. 05;t=1. 46,P>0. 05;t=1. 11, P>0. 05).
CONCLUSION:Under standard prescription, application of progressive multifocal glasses provides a new effective treatment for ametropic amblyopia in hyperopic children, and makes up the deficiency of the whole straightening and under correction in clinical treatment.