1.A comparison of the effectiveness of extracorporeal shock wave therapy and ultrasound therapy on managing heel pain
Chinese Journal of Physical Medicine and Rehabilitation 2003;0(10):-
Objective To examine the relative effectiveness of extracorporeal shock wave therapy (ESWT) and ultrasound therapy (US) on managing heel pain. Methods Thirty seven patients were divided into 3 groups, two treatment groups (groups 1 and 2) and one control group (group 3).Group 1 received ESWT once a week for 3 consecutive weeks.Parameters were set at a frequency of 4Hz with a total of 1000 impulses, intensity at 0.23 to 0.37mJ/mm 2. Group 2 received continuous ultrasound therapy for 5 minutes in each session, three times a week for three consecutive weeks. Parameters were set at 1MHz, intensity level at 1W/mm 2. Group 3 was the control group and no treatment was given during the study period.The intensity of morning pain on weight bearing, pain triggered by prolonged walking/standing, pain on tension and palpation tests were assessed by use of Visual Analogue Scale (VAS) before and after each treatment session, including the follow up session.In addition, Mayo Clinical Scoring System (MCSS) was used to evaluate the treatment outcomes. Results After 3 weeks of treatment plus 3 weeks follow up,outcome measures had shown statistical significant difference on the intensity of pain on tension test( P =0.037),the intensity of pain on palpation test ( P =0.019) and the maximum duration of prolonged walking or standing ( P =0.002). Conclusion ESWT is more effective and efficient for managing heel pain than ultrasound therapy.
2.Current progress of visual physiology in retinopathy of prematurity
Chinese Journal of Experimental Ophthalmology 2011;29(9):862-864
Retinopathy of prematurity( ROP),a leading cause of childhood visual impairment,is a vascular proliferative retinopathy in premature infants. Although the hallmark of ROP is abnormal retinal vasculature, a growing body of research in animals and observations in patients support a critical role for the neural retina in the ROP disease process. ROP can affect the foundation of the retina and optical nerve during the development duration in childhood, presenting with abnormalities in electroretinogram and multifocal electroretinogram. In addition,it was found that ROP has different degrees of influence on the development of the dioptric system ,which will result in refractive error as the child progress to adulthood. The relationship of the electrophysiology features or refractive abnormality and ROP was summarized in this article.
5.Therapeutic effects of percutaneous alternating cryogenic-heating therapy for nonresectable hepa-tocellular carcinoma
China Oncology 2001;0(05):-
Purpose:To study the therapeutic effects of beta-ultrasound guided percutaneous alternating cryogenic- heating therapy(ACHT) through liver puncture combined with other regional therapy for advanced hepatocellular carcinoma. Methods:68 patients with advanced hepatocelluar carcinomas were divided into 4 groups.Group A,17 patients are treated with ACHT plus transcatheter hepatic arterial chemoembolization(TACE).Group B,16 patients were treated with ACHT plus intravenous chemotherapy;GroupC,19 patients were treated with TACE only;GroupD,16 patients were treated with in- travenous chemotherapy only.Results:In ACHT+TACE group,the rate of complete response(CR) plus partial response (PR) was 88.2%,the 0.5-,1-year survival rates were 94.1%,94.1%,the rate of AFP decreased was 84.6%.In ACHT+ ICT group,the rate of complete response(CR) plus partial response(PR) was 87.5%,the 0.5-,1-year survival rates were 87.5%,68.8%,the rate of AFP decreased was 78.6%.In the TACE group,the rate of complete response(CR) plus par- tial response(PR) was 57.6%,the 0.5-,1-year survival rates were78.9%,42.1%,the rate of AFP decreased was 69.2%. In ICT group,the rate of complete response(CR) plus partial response(PR) was 25.0%,the 0.5-,1-year survival rates were 50.0%,18.8%,the rate of AFP decreased was 41.7%.For CR+PR,ACHT+TACE group and ACHT+ICT group were significantly higher than TACE group and ICT group,but significant changes between ACHT+TACE group and ACHT +ICT group were not found.For survival rates,ACHT+TACE group was significantly higher than the other 3 groups, ACHT+ICT group was significantly higher than ICT group.There were no serious side effects after chemotherapy except that 5 patients' leucocytes decreased to degree Ⅲ.The postoperative complications after ACHT included bleeding,hemoglo- binuria and reactive thoracic,which disappeared after short term treated.Conclusions:Alternating cryogenic-heating therapy (ACHT) through liver puncture combined with other regional therapy is effective in treating advanced hepatocellular carci- noma and its side effects and postoperative complications are mild.
6.T-helper (Th) 17 cell quantity and related cytokine expressions in skin lesions and peripheral blood of patients with psoriasis vulgaris
Yongfeng CHEN ; Shuxia CHANG ; Daocheng ZHENG
Chinese Journal of Dermatology 2011;44(1):11-14
Objective To detect the quantity of Th17 cells and expressions of related cytokines including interleukin (IL)-17 and IL-22, in peripheral blood and skin lesions of patients with psoriasis vulgaris, and to analyze their correlation with disease severity and clinical course. Methods Peripheral blood was obtained from 44 patients with progressive psoriasis vulgaris and 28 normal human controls. Three-color flow cytometry was carried out to detect the quantity of Th17 cells, and ELISA to examine the levels of serum IL-17 and -22.Skin samples were obtained from 20 patients with psoriasis vulgaris and 8 normal human controls, and a quantum dot-based double labled immumofluorescence method was used to determine the quantity of Th17 cells.Results The percentage of peripheral blood Th17 cells was higher in patients with psoriasis vulgaris than in normal human controls (4.71% ± 2.55% vs. 0.55% ± 0.39%, P < 0.01 ). Elevated expressions of IL-17 and IL-22 were noted in the patients compared with the normal human controls (24.02 ± 12.31 ng/L vs. 7.16 ±4.04 ng/L, P < 0.05; 18.32 ± 8.14 ng/L vs. 6.52 ± 4.15 ng/L, P < 0.01 ). The percentage of peripheral blood Th17 cells and serum levels of IL-17 and IL-22 were positively correlated with psoriasis area and severity index (r= 0.53, 0.47, 0.53, respectively, all P < 0.01 ), but unrelated to the clinical course of psoriasis (r = 0.09,0.03, 0.19, respectively, all P > 0.05). There was an infiltrate of Th17 cells in psoriatic lesions, which was mainly distributed around the blood vessels in superficial dermis, whereas there were only a small number of CD4+ T cells in the normal control skin with the absence of Th17 cells. Conclusions Th17 cells are involved in the development of psoriasis, and Th17 cell-secreted cytokines, such as IL-17 and IL-22, may serve as a new therapeutic target for psoriasis.
7.Peptide Induced Conformational Changes of E. Coli DegP (HtrA) Protease
Xuefeng ZHANG ; Yixin ZHENG ; Zengyi CHANG
Progress in Biochemistry and Biophysics 2006;33(2):183-189
The DegP protein, functioning as both chaperone and protease, plays a critical role in degrading and removing denatured or damaged proteins in the cellular envelope during heat shock and other stresses. So far, several proteins have been identified as its natural targets. A carboxyle-terminal peptide derived from the PapG pilus, one of the in vivo substrates for DegP, has been shown to activate the protease. Nevertheless, neither the details nor the physiological implications of such activation have been studied. The evidence that DegP undergoes conformational changes upon binding the peptide derived from C-terminal sequence of pilus subunit PapG has been presented. It demonstrated that upon binding this peptide, detectable changes can be observed for both secondary and tertiary structures of DegP, as examined by CD spectroscopy. Gel filtration and dynamic light scattering analysis also revealed that the size of DegP becomes smaller to a minor extent. Moreover, both the hydrophobic surfaces and catalytic sites of DegP were found to expose slightly in the presence of the peptide. Upon peptide binding, a less flexible and more rigid conformation of DegP was obtained as analyzed by fluorescence anisotropy. The physiological implications of these observations for DegP are discussed.
8.Changes in PaO2 and pH in experimental hepatocarcinoma
Meirong ZHENG ; Chunming CHANG ; Youbing RUAN
Chinese Journal of Pathophysiology 2001;17(8):782-
AIM: To study the changes in PaO2 and pH in experimental hepatocarcinoma and their significance.METHODS:Qualitative analysis of the PaO2 and pH was made by three channel tissue measuring equipment in experimental hepatocarcinoma and comparative liver tissue. RESULTS:The results showed that the PaO2 in tissue of test group was significantly higher than that of control group (P<0.01), but the pH of tissue in test group was slight higher than that of control group (P>0.05).CONCLUSION: PaO2 might play an impontant in genesis and developmant of hepatocarcinoma. PaO2 may be helpful in diagnosis and differentiated diagnosis for hepatocarcinoma.
9.On the Integration of Foreign Language Teaching and Humanities Education in Medical Universities
Huiwen ZHENG ; Lei CHANG ; Caixia ZHANG
Chinese Medical Ethics 1995;0(03):-
Based on the principle of training students for rural areas and serving for grass roots,Mudanjiang medical college cultivates talents mainly from countryside and rural areas,thus it is of great importance to build up decent and accurate values for those will-be doctors who heal the wounded and prevent and cure diseases.As well as enhancing their professional qualifications,medical college teachers should also cultivate students' world view,philosophy,values,responsibility,occupational ethics,and a scientific development outlook.
10.Analysis on the Impact of Health Investment on Economic Development
Dongju SHI ; Yi ZHENG ; Jinliang CHANG
Chinese Medical Ethics 1995;0(03):-
The situation of investment in health is a measure of socio-economic and cultural development of a country or region.The health outcome from a certain amount of health costs is the economic benefits of investment in health.The World Health Organization has made "put investment in the field of health to promote economic development," a new development strategy for the purpose of investment in health,expanding domestic demand and the development of health which could be the cause of national macro-economic development.This paper briefly describes the impact of health investment on China's economic development from several aspects.