1.The importance of carrying out the gene diagnosis for retinoblastoma
Chang-zheng, CHEN ; Xiang-xiang, YU
Chinese Journal of Experimental Ophthalmology 2013;(7):617-620
The progress of modality therapy has improved both survival rate and quality of life of retinoblastoma(RB) patients.However,some problems are still left and unsolved.Parts of the RB relapse after they are treated for the first time.Even more remarkable,the related individuals to the RB patients run a risk of RB.Gene diagnosis and treatment are emerging and appear to solve these problems.Some researches in developed countries and Hong Kong have successfully made progress in gene diagnosis of RB.However,the detection rate of Rb1 gene mutation is very low.Researches documented for many years that gene diagnosis for RB is extremely complex,so we should go further to achieve a goal of gene diagnosis.Gene diagnosis of RB is still an initiation in China.We should strengthen relevant study and spread this technique.
2.Efficacy of the Rehabilitation Strategy for Inpatients with Schizophrenia
Hao CHEN ; Yanli CHANG ; Yingqian XIANG
Chinese Mental Health Journal 2002;0(12):-
Objective:To explore efficacy of the rehabilitative strategy in hospitalized schizophrenics.Method:Sixty-four schizophrenic patients were randomly divided into the intervention group and the control group.Both groups received the anti-psychotics therapy, but the teamwork education,medication management skills training module, symptom management skills training module were only given to the intervention group for ten weeks. And a one-year follow-up was carried out after their discharge from hospital. All subjects were evaluated with the Positive and Negative Syndrome Scale (PANSS), Nurses` Observation Scale for Inpatient Evaluation-30 (NOSIE-30), Insight and the Attitude to Treatment Scale, Social Disability Screening Schedule (SDSS), Morning Side Scale. We also recorded the relapse rate, reemployment rate, and re-hospitalization rate. Result:The clinical outcome of the intervention group was significantly superior to the control group on overall improvement according to PANSS (31.17?3.13 vs 52.34?13.02,7.34?1.08 vs 12.36?4.28,7.76?2.13 vs 13.26?4.50,16.13?1.82 vs 32.17?9.82 ),increase of active factor score of NOSIE-30 (-18.3?3.2 vs 14.4?6.7),and the reduction of inactive factor score of NOSIE-30(9.4?6.2 vs -22.3?7.4).The relapse rate(9.4% vs 54.8%),re-hospitalization rate(3.2% vs 42%),reemployment rate(37.5% vs 9.6%)were also better in the intervention group.Conclusion:The effect of rehabilitative strategy for schizophrenic patients not only improves the symptom, but also their social function.
3.Study on Tissue Culture Techniques for Radicle of Bletilla Striata
Xiang LEI ; Mengyao HUANG ; Yanxia CHANG ; Yuanyuan JING ; Keli CHEN
China Pharmacist 2014;(4):613-614
Objective:To seek the best part and optimal culture medium for the tissue culture of Bletilla striata. Methods: The effects of hormone concentration and proportion on the induced differentiation, propagation and rootage of Bletilla striata were investiga-ted. Results:The radicle of Bletilla striata was the best part to induce the clustered shoots with the optimal culture medium of 1/2MS+1. 0 mg·L-1 6-BA+2. 0 mg·L-1 NAA. The best hormone concentration for inducing the clustered shoots was MS+1. 0 mg·-1 L 6-BA+0. 05 mg·L-1 NAA, and the optimal rooting medium was 1/2MS+0. 5 mg·L-1 NAA. Conclusion: The tissue culture system for Bletilla striata is established.
5.Pharmacokinetics of alliin in rat
Junmin CHANG ; Yang XIANG ; Liwan MEI ; Jia CHEN
Chinese Traditional Patent Medicine 1992;0(03):-
AIM: To develop an HPLC method for determintion of alliin concentration in rat plasma and to study its pharmacokinetics in rat. METHODS : The plasma samples were extracted with methanol. The analysis involved a ODS-1 column as stationary phase and distilled water as mobile phase. The flow rate was 0.5mL?min -1 ,UV detection wavelength was at 220nm. 5-fluorouracil was used as the internal standard. RESULTS : The calibration curve was linear over the range from 3?g?mL -1 to 75?g?mL -1 with a correlation coefficient of 0.9989 . The mean recovery was 95%. The RSD of within-day and between-day were all less than 5%. The HPLC method of determination of alliin in the plasma was established. After single dose of 300mg?mL -1 in 6 rat,the main pharmacokinetic parameters were estimated to be as follows: CL( 0.048 )mg?min -1 ?kg -1 ,K_ 12 ( 0.0071 )min -1 ,K_ 21 ( 0.0093 )min -1 ,K_a(0.1915)min -1 ,t_ 1/2? ( 26.85 )min -1 ,t_ 1/2? ( 131.15 )min -1 , AUC( 6228.48 )?g?min -1 ?mL -1 . CONCLUSION : This method is quick,precise and reliable. It is shown that alliin is absorbed quickly in rat.
6.Blockade of gammac signals in combination with donor-specific transfusion induces cardiac allograft acceptance in murine models.
Sheng, CHANG ; Li, WANG ; Xingguang, LIN ; Fuli, XIANG ; Bicheng, CHEN ; Zhonghua, CHEN
Journal of Huazhong University of Science and Technology (Medical Sciences) 2010;30(4):421-4
The gammac cytokines play an important role in proliferation and survival of T cells. Blocking the gammac signals can cause the activated donor-reactive T cells losing the ability to proliferate, and getting into apoptosis pathway, which contributes to induction of the peripheral tolerance. In this study, we induced the transplant tolerance through blocking the gammac in combination with donor-specific transfusion (DST) in the cardiac transplantation. Following DST, on the day 2, 4 and 6, C57BL/6 recipients received anti-gammac monoclonal antibodies (mAbs) injection, and those in control group were not given anti-gammac mAbs. On the day 7, Balb/c cardiac allografts were transplanted. All recipients in experimental group accepted cardiac allografts over 30 days, and two of them accepted allografts without rejection until sacrifice on the 120 day. Animals only receiving DST rejected grafts within 5 days, and the mice receiving cardiac transplantation alone rejected grafts within 9 days. Our study showed that blockade of gammac signaling combined with DST significantly prolonged allograft survival, which was probably associated with inhibition of antigen-specific T-cell proliferation and induction of apoptosis.
7.Clinical randomized controlled trials of acupoint catgut-embedding for simple obesity: a meta-analysis.
Jian-Qiong LIAO ; Xiang SONG ; Ying CHEN ; Li-Chang LIANG ; Sheng-Xu WANG
Chinese Acupuncture & Moxibustion 2014;34(6):621-626
The clinical therapeutic effect of acupoint catgut-embedding for simple obesity was systemically analyzed to provide reference and assistance for its clinical treatment and research. By searching in the CBM, CNKI, VIP, Wanfang, Pubmed, Springer and Medline databases, clinical randomized controlled trials (RCT) of acupoint catgut-embedding for simple obesity published from Jan, 2009 to July, 2013 were collected while Revman 5. 2 software was applied to perform the Meta-analysis. Totally 19 articles were acquired with 1 658 cases involved. The effective rate was selected as primary outcome measure in 19 articles. The Meta-analysis was performed among homogeneous researches. The results indicated that compared with other therapies, pooled OR of acupoint catgut-embedding was 2.45 with 95% CI [1.81, 3.32]; in the test for overall effect, Z = 5.81, implying the efficacy difference of two therapies was significant in the treatment of simple obesity (P < 0.01). In subgroups analysis, in the event of treatment session with more than 3 months, compared with other therapies, pooled OR of acupoint catgut-embedding was 2.61 with 95% CI [1.53, 4.46]; in test for overall effect, Z = 3.51, implying the efficacy difference of two therapies was significant in the treatment of simple obesity (P < 0.01); in the event of treatment session with less than 3 months, compared with other therapies, pooled OR of acupoint catgut-embedding was 2.38 with 95% CI [1.65, 3.44]; in test for overall effect, Z = 4.46, implying in the treatment of simple obesity the efficacy difference of two therapies was significant (P < 0.01). Compared with electroacupuncture, OR of acupoint catgut-embedding was 1.79, 95% CI [1.08, 2.95] (P = 0.02). Compared with acupuncture, OR of acupoint catgut-embedding was 1.89, 95% CI [1.16, 3.09] (P = 0.01), which explained that compared with electroacupuncture and acupuncture, the efficacy of acupoint catgut-embedding was significantly different. In a word, the clinical efficacy of acupoint catgut-embedding is superior to other therapies in the treatment of simple obesity.
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Randomized Controlled Trials as Topic
9.Infusion of donor-specific regulatory T cells prolonged islet allograft survival in mice
Ming LI ; Dong CHEN ; Yonghai LI ; Sheng CHANG ; Ying XIANG ; Hui GUO ; Weijie ZHANG
Chinese Journal of Organ Transplantation 2011;32(1):20-23
Objective To investigate the effects of donor-specific regulatory T cells (Treg) transfusion on islet allograft survival. Methods Allogeneic fresh islets from Balb/c mice were transplanted to streptozotocin-induced diabetic C57 mice. The survival of islet allografts was observed. The experiment was divided into 3 groups: control group, nothing had been done to the recipients; simple islet transplantation group, the recipients received the islet transplantation only; experimental group, the recipients were given 1 ×106 Treg, then received islet transplantation. Results Blood glucose (BG) was above 16. 7 mmol/L after islet transplantation in control group; In simple islet transplantation group,BG level returned to normal level 1 to 2 days after transplantation, and hyperglycemia appeared 7 to 11 days after transplantation and maintained as the same as that before transplantation; In experimental group, BG level returned to normal level 2 days after transplantation and maintained at a low level,and at the 21st day after transplantation BG level was over 16. 7mmol/L in some recipients. Islet allograft survival in experimental group was significantly prolonged as compared with simple islet transplantation group. Conclusion Donor-specific Treg transfusion could prolong the islet allograft survival,and maybe have positive effect on tolerance induction of islet transplantation.
10.Study on psoriatic peripheral blood T-lymphocytes:effects of CD147-targeting small interfering RNA on the expression of CD147 and on cell proliferation and activation
Jing CHANG ; Xiang CHEN ; Juan SU ; Yehong KUANG ; Hui LU ; Sheng PENG
Chinese Journal of Dermatology 2008;41(12):783-786
Objective To investigate the effects of small interfering RNA(siRNA)on the expression of CD147 on peripheral blood T-lymphocytes from patients with psoriasis vulgaris,and its effect on the proliferation and activation of these cells.Methods Peripheral blood monouclear cells(PBMC)were obtained from 10 patients with psoriasis vulgaris,and T lymphocytes were isolated.CD147 siRNA was chemically synthesized,then electroporated into the peripheral T-lymphocytes.Untransfected cells,blank-transfected cells and unspecifically transfected cells served as the control.After 24-,48-,72-and 96-hour incubation,RT-PCR was used to detect the mRNA expression of CD147 in these cells.MTT assay and flow cytometry were utilized to assess the proliferation of these cellas,and the expression Of CD25 at 24,48,and 72 hours after the transfection.Results Compared with untransfected cells,the mRNA expression of CD147 declined significantly in CD147 siRNA-transfected cells at 24 hours(P<0.05),reached to the minimum at 48 hours (P<0.01):there was no significant difierence in the expression of CD147 between the two groups of cells at 96 hours after the transfection(P>0.05).There was a decrease of cell proliferation level by(44.5±3.13)%,(50.7±3.5)%and(53.98±4.15)%in CD147 siRNA-transfected cells 24,48 and 72 hours following the transfection,respectively;the corresponding decrease in blank-transfected cells was (37.28±3.56)%,(33.73±3.29)%,and(28.80±1.49)%,respectively,and that in unspecifically transfected cells,(31.29±2.46)%,(36.1±2.62)%and(32.08±2.78)%,respectively.A significant decrease was observed in the proliferation of CD147 siRNA-transfected cells compared with that of blank-transfected cells and unspecifically transfected cells at these three time points(P<0.05,0.01,0.01 respectively).The expression rate of CD25 at 24,48 and 72 hours was(47.23±3.65)%,(31.50±4.22)%and(23.05±4.15)%,respectively,on CD147 siRNA-transfected cells,and,(80.2±4.8)%,(81.6±3.35)%and(83.5±4.1)%,respectively,on untransfeeted cells;the differences between the two groups at the three time points were statistically significant(all P<0.01).Conclusion CD147 is correlated with cell proliferation and activation of peripheral T lymphoeytes from patients with psoriasis vulgaris,and may serve as a new treatment target for psoriasis.