1.Embryonic stem cell differentiation towards cardiomyocytes and its application in cardiac tissue engineering
Chinese Journal of Tissue Engineering Research 2007;0(34):-
Embryonic stem cells (ESCs) show potential prospect of wide application in establishing cardiac pharmacological model system, forming three-dimensional cardiac tissues and constructing biological pacemaker. The process of ESCs differentiating into cardiomyocytes is to simulate heart growth and development in vitro. The cases of transplanting ESCs into animal models confirm that the cardiac function is improved. Moreover, the research and exploitation of tissue engineered cardiac muscle tissue with vessel system brings hope for clinical cardiac muscle restoration. ESC-derived pacemaker can functionally integrate with quiescent ventricular muscle cells to induce rhythmic electrical and contractile activities in vitro. However, the immunological rejection limits its clinical application. Although ESCs have strong differentiation potential, the problems such as the differentiation process towards cardiomyocytes, ESC induction and signal regulatory pathway, and whether induced cardiomyocytes can substitute in vivo cardiomyocytes still need exploration.
2.Regard and Perfection of Radiation and Health Protection for Radio-subjects
Chinese Medical Equipment Journal 1989;0(04):-
Objective To explore in our country how to do a good job of radiation health protection for radio-subjects.Methods The people are divided into physical examination group and in & out-patient group,the radiation health protection status of the current domestic and foreign subjects are contrastively analyzed.Results The western developed countries radiology examinations have stronger sense of patient protection,but the prevalent problems are neglected and abused in domestic hospital.Conclusion The radiation health protection in healthy people and medical patients can be regarded and consummated,which is people-centered and can be strengthen radiological protection awareness,strictly implement radiation protection standards of hygiene and put an end to the indiscriminate seizure.
3.Association between Cyclin D1 protein expression and metastasis of ovarian cancer
Meilian ZHENG ; Baoxiang OU ; Mengda LI
Chinese Journal of Immunology 2001;0(07):-
Objective:To investigate the association between Cyclin D1 and metastasis and determine the relationship between Cyclin D1 proteins expression and P21 WAF1?P53 proteins in ovarian cancer.Methods:Cyclin D1,P21 WAF1 and P53 proteins were detected from 61 ovarian carcinoma and 7 ovarian tissues without cancer by using Western blot method.Results:The positive rate of Cyclin D1 and P53 proteins expression in cases with ovarian cancer were significantly higher than those in without cancer tissues(P0.05).However, the expression of P21 WAF1 protein was correlated with clinical stages(P0.05).The expression of Cyclin D1,P53 and P21 WAF1 protein in ovarian carcinoma were related to metastasis(P
4.The Risk Factors Affecting the QOL of OSAS Patients and the Influence of nCPAP Treatment on the QOL of OSAS Patients
Qiong OU ; Qingwei ZHENG ; Jinhui YE
Journal of Chinese Physician 2001;0(10):-
Objective To explore the risk factors affecting the quality of life (QOL) of patients with obstructive sleep apnea (OSAS) and the influence of nasal continual positive airway pressure (nCPAP) treatment on the QOL of OSAS patients. Methods Measuring the quality of life of 212 patients suffered from OSAS with WHOQOL-BREF and analyzing the influences of the sleepiness, quality of sleep, chronic disease and nCPAP treatment on the QOL of patients with OSAS. Results The scores on physical domain and psychological domain of patients who were sleepiness or had bad quality of sleep were less than that of patients who were non-sleepiness or had a good sleep respectively(P
5.Study of event-related potentials N400 in children with Tic disorders
Lianqing HU ; Xuan ZHENG ; Limin OU
Journal of Clinical Neurology 2001;0(05):-
Objective To investigate the change of event-related potentials(ERPs)N400 and its significances in children with Tic disorders.Methods N400 of 35 children with Tic disorders(case group)and 20 healthy children(control group)were taken.The results of case group and control group were compared with each other.Results N400 latency of the case group was(706.87?198.99)ms,and the amplitude was(26.12?13.64)?V;N400 latency of the control group was(485.75?85.76)ms,the amplitude was(22.35?19.76)?V.There was obvious difference in latency between two groups(P0.05).Conclusion ERPs N400 latency of children with Tic disorders prolong obviously which shows cognitive dysfunction in the patients.
6.The Application of Helical CT Dual-phase Scan in Diagnosis and Staging of the Gastrointestinal Tumor
Shibing HUANG ; Chunsheng ZHENG ; Xiaobo OU
Journal of Practical Radiology 1996;0(04):-
Objective To investigate the clinical value of helical CT dual-phase scan in diagnosis and staging in gastrointestinal tumor.Methods Helical CT dual-phase enhanced imaging features of gastrointestinal tumor proved by surgery and pathology in 69 cases were retrospectively reviewed.Results(1)The tumors in 55 cases were enhanced ovviously in the venous phase compared with that in arterial phase(P
7.The Comparative Analysis of Microorganism Diversity in Two Kinds of Packaged Chilled Beef on Sale
Zheng-Tang LI ; Bai-Lin LI ; Yong ZHAO ; Jie OU ;
Microbiology 1992;0(01):-
This research is for the purpose of comparative analysis of the microbial flora structure in the chilled beef with no packing and cling film, which under the same terms of sale. It was used the V3 area fragment of 16S rDNA to carry on PCR-DGGE, Meanwhile used the 16S rDNA sequence to analysis the microbial flora structure of the two samples, according to the technology of clone .The research discovered that the flora structure displays a biggish difference; there was 6 OTU in the chilled beef with cling film, mainly was that Lactococcus(28%), Lactobacillus (26%), Carnobacterium(18%) and Brochothrix (10%); but there was 18 OTU in the chilled beef with no packing, mainly was that Lactococcus(28%), Brchothrix(18%), Acinetobacter (11%). The result indicates that cling film played a certain inhibitory action regarding the Staphylococcus as well as the cold pole bacteria and such bacterium. And it can provide a certain theory ba-sis for the meat processing in the department of microorganism’s control.
8.Screening and Identification of the Primary Bacterium from the Chilled Beef on Sale
Zheng-Tang LI ; Bai-Lin LI ; Jie OU ; Yong ZHAO ;
Microbiology 1992;0(02):-
It is used the method of pure culture,Selected 32 strains,which were obvious difference in the shape,color and so on common characteristic,From the chilled beef with no packing and cling film on sale in this research;and it was included 12 strains from the chilled beef sample packed with cling film;20 strains from the chilled beef sample with no packing.Simultaneously selected 4 strains which were predominant in each bacterium from the two samples to conduct the further research,8 strains serial numbers are:S01~S08,S01~S04 from the chilled beef sample with no packing;S05~S08 from the chilled beef sample packed with cling film.Through ARDRA(Amplified ribosomal DNA restriction analysis) as well as 16S rDNA to clarify the bacterium's classified status.The physiological and chemical tests were done to determine the various bacteria respective genus.The experiment indicated:S01 is Pseudomonas putida;S02 is Shewanella cincia stain;S03 and S05 are the same Shewanella putrefaciens;S04 is Stenotrophomonas mal-tophilia;S06 is Psychrobacter;S07 is Staphylococcus sciuri;S08 is Microbacterium-laevaniformans.It was proved that two samples altogether have the same predominant bacterium.It can provide certain theory basis for the chilled meat processing craft as the preliminary investigation in the cultured microorganism situation in two samples.
9.Vestibular testing abnormalities in individuals with motion sickness
Yan MA ; Yongkang OU ; Ling CHEN ; Yiqing ZHENG
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2009;(16):728-730
Objective:To evaluate the vestibular function of motion sickness. Method:VNG, which tests the vestibular function of horizontal semicircular canal,and CPT, which tests vestibulospinal reflex and judge proprio-ceptive,visual and vestibular status, were performed in 30 motion sickness pations and 20 healthy volunteers(control group). Graybiel score was recorded at the same time. Result:Two groups' Graybiel score (12. 67±11. 78 vs 2. 10±6. 23;rank test P<0. 05),caloric test labyrinth value [(19. 02±8. 59)°/s vs (13. 58±5. 25)°/s ;t test P< 0. 05],caloric test labyrinth value of three patients in motion sickness group exceeded 75°/s. In computerized pos-tourgrphy testing(CPT) , motion sickness patients were central type(66. 7%) and disperse type(23.3%);all of contral group were central type. There was statistical significance in two groups' CTP area, and motion sickness group was obviously higher than control group. While stimulating vestibulum in CPT, there was abnormality (35%-50%)in motion sickness group and none in contral group. Generally evaluating CPT,there was only 2 pro-prioceptive hypofunction,3 visual hypofunction, and no vestibular hypofunction, but none hypofunction in contral group. Conclusions Motion sickness patients have high vestibular susceptible, some with vestibular hyperfunction. In posturography,a large number of motion sickness patients are central type but no vestibular hypofunction, but it is hard to keep balance when stimulating vestibulum.
10.Observation on the effect of decompression in the treatment of large jaw cystic lesions
Guangzhao XU ; Jiangyong OU ; Liming ZHENG ; Jianwen GU
Chinese Journal of Primary Medicine and Pharmacy 2013;20(9):1300-1301
Objective To investigate the clinical efficacy and safety of decompression in the treatment of large jaw cystic lesions.Methods 42 patients suffered from large jaw cystic lesions were randomly divided into two groups,21 patients in the control group performed the traditional curettage surgery;21 patients in the experiment group performed the decompression surgery.The intraoperative blood loss,operative time,the incidence rate of postoperative pain and postoperative infection,follow-up recurrence rate were compared between the two groups.Results The intraoperative blood loss,operative time,postoperative pain and postoperative infection rates of the experiment group were significantly better than the control group,the differences between two groups were significant(P < 0.05).The recurrence rate of the control group and the experiment group was 24.0%,4.8%.The recurrence rate of the experiment group was significantly lower than the control group (P < 0.05).Conclusion Compared to the traditional curettage surgery,decompression surgery can reduce blood loss,shorter operative time,reduce postoperative infection,reduce the risk of recurrence,then improve the clinical efficacy.