1.Experimental study of intracerebral transplantation of TH gene modified astrocytes for treating Parkinson's disease
Jun LIU ; Kecheng ZHANG ; Wenqin CAI
Journal of Third Military Medical University 2001;23(5):556-558
Objective To explore the role of tyrosine hydroxy lase (TH) gene in the treatment of Parkinson's disease (PD) by using ex vivo gene transfer. Methods After the construction of TH gene in a retroviral vector, the astrocytes were cultured with the supernatant containing the recombinant DNA and then grafted into the cerebrum of PD rats. The reduction of the rat rotation beharior was evaluated. Results The rotati on of PD rats was markedly improved in the rats with ex vivo gene transfer. Conclusion TH has an obvious efficiency on the treatment of PD and the astrocytes can be used as effective gene transfer cells.
2.Relation of anxiety and depression to lifestyle in junior high school students
Yang LIU ; Weibo ZHANG ; Jun CAI
Chinese Mental Health Journal 2017;31(3):235-240
Objective:To survey the status of anxiety/depression and lifestyle among junior high school students and explore their relation to put preference for psychological health education.Methods:Totally 1597 junior high school students aged 10 to 17 years in Shang Haicity were surveyed.The Generalized Anxiety Disorder-7 (GAD-7),Patient Health Questiormaire-9 items (PHQ-9) and Chinese Adolescent Lifestyle Scale (CALS),were used to assess anxious emotion,depressive emotion and lifestyle.Results:The rates of anxious emotion and depressive emotion were 16.4% and 17.2% respectively among students.Scores of GAD-7 and PHQ-9 were negatively correlated with all factor scores of CALS including eating habits,sleep status,health habits,learning habits,exercise,entertainment activities,interpersonal relationships,coping style and life satisfaction (-0.57 ≤ r ≤-0.15,Ps < 0.01).Multivariate stepwise regression analysis showed that the sleep status factor scores,life satisfaction and exercise factor scores of CALS could negatively predict scores of GAD-7 (β3 =-0.17,-0.15,-0.05;Ps < 0.05) and health habits positively predict scores of GAD-7 (β3 =0.08,P <0.001).Sleep status factor scores,life satisfaction factor scores and eating habits factor scores could negatively predict scores of PHQ-9 (β3 =-0.21,-0.16,-0.06;Ps < 0.05).Conclusion:It suggests that the junior high school students'depression and anxiety are related to their lifestyle.The emotion of depression and anxiety of students may be predicted by some factors in the lifestyle.
3.Clinical application of circumferential procedure for prolapse and hemorrhoids using an anastomat in the treatment of severe prolapsed internal hemorrhoids
Chao ZHANG ; Jun JIANG ; Zhiming CAI ;
Journal of Third Military Medical University 2003;0(10):-
Objective To evaluate the therapeutic efficacy of the circumferential procedure for prolapsed hemorrhoids (PPH) in the treatment of third or fourth degree hemorrhoids Methods A total of 32 patients with Ⅲ or Ⅳ degree of circular prolapsed hemorrhoids received operation of PPH The mean age of the patients was 42 5 years old with hemorrhoids history of 5 42 years Results The mean operating time was 9 2 minutes and hospital stay was 3 3 days after operation Eighteen patients complained of local anal pain and 6 patients suffered from temporary urine retention after operation Postoperative bleeding was found in 7 cases on days 3 and 6 after operation, but it was cured by conservative methods No complications were found during the follow up of 2~10 months Conclusion PPH is a safe and effective treatment for hemorrhoids at the third and fourth degree with the advantages of shorter time of inpatient stay and earlier return to normal activity and quicker recovery However, the long term outcome remains to be identified
4.Application and assessment of flipped classroom in the integrated curriculum of pathology and pathophysiology overview
Jun CAI ; Liang ZHANG ; Qian ZHAO
Chinese Journal of Medical Education Research 2021;20(1):25-28
Objective:To explore and evaluate the application of flipped classroom in the integrated curriculum of pathology and pathophysiology overview.Methods:This study included in 172 students from the 8-year program of clinical medicine of Batch 2016 (observation group), and 142 students of Batch 2014 (control group). The observation group adopted traditional classroom teaching combined with flipped classroom teaching, and the control group used only traditional classroom teaching. In the observation group, the teaching contents were redesigned in the form of flipped classroom. The relevant knowledge points were provided before class. Group discussions and in-class presentations were used in the teaching. And the cultivation of students' learning autonomy, interaction and innovation were emphasized. The teaching evaluation was obtained from the questionnaire survey and final exam performance of the two groups of students. SPSS 21.0 was used for t test. Results:Students in the observation group had high satisfaction with flipped classroom which was helpful to improve students' independent learning ability, oral expression ability and innovative thinking ability. However, there was no significant difference in the final exam scores between the two groups ( P=0.306). Conclusion:Flipped classroom teaching can improve students' interest in learning and stimulate their independent learning and innovation. However, the teaching effect evaluated only by the final performance can't reflect the superiority of flipped classroom, which should be assessed by more evaluation indexes.
5.Calcitonin gene-related peptide inhibits the expression of Nod-like receptor protein 3 to Dromote osteoblast differentiation in mouse osteoblasts in vitro.
Jun CAI ; Jun Lü ; Shiting LI ; Qiangguo GAO ; Gang ZHANG
West China Journal of Stomatology 2016;34(1):12-16
OBJECTIVEThis study aims to investigate the regulatory effects of calcitonin gene-related peptide (CGRP) on Nod-like receptor protein 3 (NLRP3) and interleukin-1β (IL-1β) to promote osteoblast differentiation.
METHODSDifferent concentrations of CGRP (0, 10, 30, 100 ng · mL⁻¹) were added to mouse osteoblasts in vitro. The mRNA and protein expression levels of both NLRP3 and IL-1β were examined using Real-time polymerase chain reaction and Western blot, respectively. Moreover, the concentrations of IL-1β protein and intracellular reactive oxygen species (ROS) were detected using enzyme-linked immunosorbent assay and flow cytometry, respectively. The osteogenic differentiation of mouse osteoblasts was identified through alizarin red staining.
RESULTSThe protein and mRNA expression levels of both NLRP3 and IL-1β significantly decreased (P < 0.05) with increasing CGRP concentration. Moreover, the contents of intracellular ROS gradually decreased (P<0.05). The osteogenic differentiation of the osteoblasts was more enhanced in the group treated with 100 ng · mL⁻¹ CGRP than in the empty group (0 ng · mL⁻¹ CGRP).
CONCLUSIONCGRP promotes osteoblast differentiation by inhibiting the expression of inflammatory factors.
Animals ; Blotting, Western ; Calcitonin ; Calcitonin Gene-Related Peptide ; Cell Differentiation ; Enzyme-Linked Immunosorbent Assay ; Interleukin-1beta ; Mice ; NLR Family, Pyrin Domain-Containing 3 Protein ; NLR Proteins ; Osteoblasts ; Osteogenesis ; RNA, Messenger ; Reactive Oxygen Species ; Real-Time Polymerase Chain Reaction
6.Nutritional Support in the Treatment of Cancer
Jun LV ; Jun ZHANG ; Jiaqiang ZHU ; Ang CAI ; Jia HU
International Journal of Traditional Chinese Medicine 2008;30(5):375-377
Objective To investigate nutritional support in the treatment of cancer in recent years.Methods Seperately diSCUSS on application conditions of enteral nutrition and parenteral nutrition in the treatment of cancer and its advantages and disadvantages.Results Enteral nutrition can improve digestive funcdon,reduce costs and enhance immunity.Parenmral nutrition can supplement insufficiency of enteral niltrition and inhibit tumor growth by selecting the kinds of nuWients to support a normal body function.Conclusion Enteral nutrition combined witll parenteral nutrition iS a suitable means of nutritional support in the treatment ofcancer.
7.EFFECTS OF SELENIUM AND VITAMIN E ON APOPTOSIS AND C-MYC EXPRESSION IN LEUKEMIC CELLS
Jing ZHANG ; Jun ZHANG ; Yan ZHAO ; Hongjun SHI ; Meixu CAI
Acta Nutrimenta Sinica 1956;0(04):-
Objective: To study the effects of vitamin E and selenium on apoptosis and c-Myc expression in human leukemia cells. Methods: DNA gel electrophoresis and Northern blotting hybridization were used to detect the apoptosis and the expression of c-Myc gene, respectively. Human leukemia cell line HL-60 and K562 were cultured in vitro. Results: The apoptosis of HL-60 and K562 cells were induced after being exposed to vitamin E (100 ?mol/L) and selenium (8 ?mol/L) for 24 hours, respectively. In HL-60 cell line, c-Myc mRNA was down-regulated significantly by vitamin E(100 ?mol/L),but not selenium(8 ?mol/L).In contrast, the expression of c-Myc gene was repressed by selenium(8 ?mol/L) and not by vitamin E(100 ?mol/L) in K562 cell. Conclusion: Our observations suggest that c-Myc down-regulation and induction of apoptosis by selenium and vitamin E are important pathways in repressing leukemia cell proliferation.The results suggest there are different mechanisms of repressing leukemia cell proliferation for selenium and vitamin E.
8.Interference of lipid compositions and carry-over contamination of lipid reagents on measurement of serum total bile acid
Haicong LI ; Huanying FANG ; Zhijin CHEN ; Jinfeng CAI ; Jun ZHANG
International Journal of Laboratory Medicine 2014;(11):1407-1409
Objective To investigate whether lipids and reagents would interfere the results when serum total bile acid(TBA) was measured by enzymatic cycling assay.Methods The serum TBA was measured by enzymatic cycling assay.The carry-over contaminations of high density lipoprotein(HDL-C),low density lipoprotein(LDL-C),cholesterol(TC),and triglyceride(TG)rea-gents were evaluated.In order to reduce the interference and carry-over contaminations,different washing procedures and detection sequence were set.Results By measuring the levels of TBA in pooled serums with low and high levels of lipids,the results showed that there was statistically significant difference between the groups with and without the addition of cleaning process before and af-ter TBA measurement(P <0.01).Cleaning with water might be more effective on reducing interference than those with acid solu-tion.Moreover,the mean of TBA levels in HDL-C,TC,TG and LDL-C reagents were (476.06 ± 1.88 ),(127.78 ± 1.18 ), (121.05±1.08),and (2.23±0.51)μmol/L,respectively.The stability of TBA level was greatly affected by HDL-C regents,fol-lowing by TC and TG reagents,and was little affected by LDL-C reagent.Setting up proper detection sequence and flushing proce-dures could obviously reduce the interference(P <0.01),but not completely rule out.Conclusion Analysis sequence and flushing procedures of biochemical analyzer as well as exogenous substance from reagents may seriously affect the accuracy of determination results.To ensure the accuracy and reliability of the results,it is necessary not only to set up reasonable irrigation and reaction se-quence,but also to master the instrument operation,to know the principle of test reaction and the components of reagents as well as equipment maintenance.
9.The diagnostic value of VILIP-1 and NR2 peptide combined detection in the early ischemic stroke
Xiaoli LIU ; Xiuzhi ZHANG ; Changyi SUN ; Jun CAI ; Xiaofeng JIANG
Chinese Journal of Laboratory Medicine 2014;(6):469-472
Objective To Investigate the concentration of VILIP-1 and NR2 peptide in the serum of patients with ischemic stroke , and to explore their clinic value in early diagnostic of ischemic stroke patients.Methods The levels of VILIP-1 and NR2 peptide were examined by ELISA ( enzyme linked immunosorbent assay ,ELISA) with suspicious TIA ( defined as a neurological deficit that resolved within 24 hours) or acute ischemic stroke patients ( within 72 hours of onset of symptoms ) 340 cases,102 healthy controls,98 patients with vascular risk factors and 35 patients with hemorrhagic stroke.Among all the groups , VILIP-1 and NR2 peptide level were analyzed using the nonparametric Wilcoxon test.Diagnostic performance were analyzed among the groups with the two biomarkers independently and combinedly .Results Serum levels of VILIP-1 and NR2 peptide in patients with ischemic stroke (IS) were 9.80 (1.90-14.22) μg/L, 14.40 (5.60-27.91) μg/L respectively,which was higher than that of the healthy control group [VILIP-1:0.02 (0.01-0.09),NR2:0.33 (0.02-1.15),χ2 were 5.61 and 9.54,P<0.001],the group with vascular risk factors [VILIP-1:0.03 (0.02-0.16),NR2:0.27 (0.01-1.54),χ2 were 6.74 and 10.62,P<0.001], the group of patients non-stoke [VILIP-1:0.04 (0.03-0.19),NR2:0.53 (0.45-1.21),χ2 were 3.78 and 7.63, P <0.001 ].The levels of VILIP-1 and NR2 peptide was significantly increased in IS patients presenting within 3 h of symptom onset.When differentiating IS from patients with hemorrhagic stroke ,NR2 had a AUC of 0.934,showing a strong distinguishing effectiveness.Differentiating IS from healthy controls , patients with vascular risk factors and non-stroke patients,the AUC of combination of VILIP-1 and NR2 was 0.974,which was higher than the AUC of either VILIP-1(0.849) or NR2(0.862) alone(P <0.05). Conclusions VILIP-1 and NR2 peptide are very sensitive and specific biomarkers to the early diagnosis of IS.The combination of VILIP-1 and NR2 peptide has higher value of clinical applications than one of them independently.
10.Analysis of the Prevalence and Economic Burden of Diabetes in Guandu District of Kunming
Rong HE ; Le CAI ; Jun DONG ; Jie TAO ; Shulan ZHANG
Journal of Kunming Medical University 2014;(1):12-14
Objective To analyze the prevalence and economic burden of diabetes in Guandu district of Kunming. Methods We used probability proportional to size (PPS) sampling method to select representative sample of 4595 residents aged 18 or over from this district. Each participant received face to face questionnaire interview and physical examination. We applied different methods to measure the direct,indirect and intangible costs of diabetes. Results In the study population, the overall prevalence of diabetes was 6.2%,and females had higher prevalence of diabetes than males (6.2%vs. 5.6%, <0.05) . The DALY/1000 population of diabetes was 3.52, among which males and females were 5.18 and 6.70, respectively. Mean unit direct costs, indirect costs and intangible costs of diabetes were 3464.49 Yuan,84.48 Yuan and 4 045.97 Yuan,respectively. The total economic burden of diabetes was 401.84 million Yuan. Intangible costs represented the largest component of economic burden of diabetes,followed by direct costs. Conclusion The huge economic burden of diabetes has become the cause for concern in Guandu district. Effective measures are needed to reduce the economic burden of diabetes.