1.Research progress in drug-induced aplastic anemia
Clinical Medicine of China 2017;33(2):176-179
Aplastic anemia(AA)is a rare disease oringed from hematopoietic cell,characterized by failure of the bone marrow and pancytopenia in peripheral blood.The mechanism of AA is indistinct,it can be congenital,or acquired disposition.Acquired AA may be secondary to poisonous,radiation,virus infection and some medicine.All these factors can injure bone marrow directly,suppressing the proliferation and differentiation of bone marrow,on the other hand,the immune system play a pivotal role indirectly.This review focused on the pathologic classification,mechanism of drug-induced aplastic anemia.
3.Reference from the Fair PharmaCare Program of BC Canada
Zhenyu YANG ; Min YAN ; Guozhu LIU
China Pharmacy 2001;0(10):-
OBJECTIVE:To introduce the Fair PharmaCare program of BC Canada for the reference of the reform of China's medical insurance system.METHODS:The running procedure of Fair PharmaCare program of BC Canada was introduced in detail and its characteristics were analyzed.RESULTS & CONCLUSIONS:Fair PharmaCare program covers all BC residents and protects them against economic difficulties in pharmacare.The program serves as a reference for the reform of China's medical insurance system.
4.Optimal screening of short hairpin and construction of its eukaryotic expression vector for glial fibrillary acidic protein
Mingyong GAO ; Zhenyu LI ; Hongyin YAN
Chinese Journal of Tissue Engineering Research 2007;11(27):5450-5454
BACKGROUND: The glial scar formation after spinal cord injury in mammals is the physical and chemical barriers for neural regeneration, and relieving or delaying glial scar formation can provide benefit conditions for the regeneration of injured spinal cord.OBJECTIVE: To design and screen short hairpin RNA (shRNA) interfere molecular targeting the gene coding region of glial fibrillary acidic protein (GFAP) in rat, and reconstruct the eukaryotic vector of shRNA.DESIGN: An observational animal experiment.SETTING: Department of Spine Surgery, Shenzhen Hospital affiliated to Southern Medical University.MATERIALS: Twenty-five Wistar rats of clean degree, either male or female, weighing 20-25 g, were used. DMEM/F12,lipofectamine2000, Trizol RNA separating kits); fetal bovine serum (Hyclone); BamH Ⅰ, HindⅢ, Pstl, Sail and T4 ligases;Plasmid mini preparation kit and DNA gel extraction kit.METHODS: The experiments were carried out in the Shenzhen Hospital affiliated to Southern Medical University from October 2005 to June 2006. Three pairs of shRNA template which composed of 19 bp reverse repeated motif of GFAP target sequence with 9 bp spacer were designed and synthesized, then they were inserted directionally into plasmid Psilencer 2.1 respectively to generate small interfering RNA (siRNA) eukaryotic expression vector. ShRNA molecules were transfected by liposome via ex vivo expression repressive model of GFAP of rat spinal astrocytes. The effects of expressive suppression were detected with real-time fluorescence quantitative reverse transcription-polymerase chain reaction (RT-PCR) and Western blot, and then the optimal shRNA eukaryotic vector of repressive expression of GFAP was screened.MAIN OUTCOME MEASURES: ① Interfering sequence specific shRNA template synthesis; ② Constructing specific recombinant plasmid eukaryotic expression vector. ③ Culturing rat spinal astrocytes in vitro; ④ Effects of expressive suppression on GFAP in primary astrocytes after RNA interference detected with real-time fluorescence quantitative RT-PCR and Western blot.RESULTS: Sequence analysis showed that GFAP-shRNA recombinant plasmid eukaryotic expression vector was successfully constructed, and optimal GFAP-shRNA eukaryotic vector was screened using real-time fluorescence quantitative RT-PCR and Western blot. The GFAP expressions were reduced by 81%, 63% and 56% at the levels of mRNA and protein respectively.CONCLUSION: GFAP-shRNA eukaryotic expression vectors were successfully constructed and screened. The gene expression GFAP of primitive rat astrocyte can be suppressed significantly by the GFAP-shRNA eukaryotic expression recombinant optimized via ex vivo cellular expression suppression model, which should pave the way for the following multiple targets of RNAi genetic manipulation in the treatment of suppression of glial scar formation after spinal cord injury.
5.Pondering over In-service Staff's Application for Master's Degrees
Xinagjin KONG ; Zhenyu LI ; Yan ZHANG
Chinese Journal of Medical Education Research 2003;0(02):-
Now the in-service staff have been permitted to apply for master's degree with the same educational level aspostgraduates. This is a signal reforming policy in postgraduate education and degrees management area in China. Manyhigher professionals are trained for our socialist modernization construction by this education technology. Although therelatively perfect system to manage this project was established in China, there are still some problems demandingprompt solution on the management thoughts, management process as well as management methods in some authorizedunits.
6.Relationship between Complications and Neurologic Subtype or Gross Motor Function in Preterm Infants with Cerebral Palsy
Shuyuan YAN ; Zhenyu LIU ; Xiaoni YAN ; Hongyan QIAN ; Zhong YU
Chinese Journal of Rehabilitation Theory and Practice 2012;18(11):1056-1059
Objective To investigate the distribution of complications and the relationship with neurologic subtype and gross motor function in preterm infants with cerebral palsy (CP). Methods The type, grade of Gross Motor Function Classification System (GMFCS), intelligence,speech, ophthalmologic consultation, brainstem auditory evoked potential and electroencephalogram of 135 preterm infants with CP were reviewed. Results There were 284 complications in total, (2.10±1.33) per child, and was significantly different among various types of CP (F=5.50, P<0.001). The incidence of mental retardation and speech disorder was significant different among various types (P<0.05). The incidence of mental retardation, speech disorder, visual impairment and epilepsy increased significantly (P<0.05) in spastic quadriplegia infants,compared with those with diplegia and hemiplegia. The incidence of mental retardation, speech disorder, visual impairment and musculoskeletal disorder was significantly different (P<0.05) among various grades of GMFCS. The frequency of complications was more in children unable to walk (GMFCS Ⅳ~Ⅴ) than able to walk (GMFCS Ⅰ~Ⅲ) for children over 2 years old (t=70.05, P<0.001). Conclusion The incidence of mental retardation, speech disorder, visual and hearing impairment, secondary musculoskeletal disorder and the multiple disorders are related with neurologic subtype and/or the grade of GMFCS.
7.Clinical significance of Her2 pathological expression in breast and gastric cancer patients
Zhenyu YAN ; Chunyang MAI ; Peng GAO ; Bo SU ; Shixuan WANG
Chinese Journal of Immunology 2016;32(6):858-862
Objective:To investigate the clinical significance of Her2 pathological expression in the breast and gastric cancer patients for providing a reference for cancer prevention. Methods: Selected surgical resection specimens of 60 diagnosed in advanced gastric cancer and 60 diagnosed with advanced breast cancer from March 2009 to May 2014 in our hospital,all specimens were given the Her2 pathological expression of immunohistochemical analysis and investigation the clinical and pathological data. Results: The Her2 positive expression rates in the breast cancer and gastric cancer specimens were 40. 0% and 36. 7%,respectively that compared to no significant difference (P>0. 05). The Her2 expression was not related to the cancer patient’s age,histological type,and there were sig-nificantly correlated to the TNM stage and lymph node metastasis ( P<0. 05 ) . Spearman correlation analysis showed that Her2 expression in the breast cancer and gastric cancer were significant positive correlation to the Survivin, Bcl-2 expression ( P<0. 05 ) . Conclusion:Breast cancer and gastric cancer patients have shown high pathological expression of Her2,and are related to the TNM stage and lymph node metastasis, it may be through inhibited the apoptosis regulating proteins involved in the pathogenesis and metastasis of tumors.
8.Clinical significance of CUL4B and interleukin-6 levels in patients with multiple myeloma
Rui LIU ; Yingman WANG ; Haixia ZHANG ; Zhenyu YAN ; Yanli XIAO
Clinical Medicine of China 2016;32(9):780-782
Objective To investigate the clinical significance of CUL4B and interleukin?6( IL?6) levels in patients with multiple myeloma(MM).Methods The mRNA of CUL4B and IL?6 were detected by real?time relative quantitative PCR and enzyme?linked immunosorbent assay( ELISA) in 46 cases of MM and 40 cases of non hematologic cancer patients.Results CUL4B concentrations in patients with MM were 3.455(2.098,4. 768).IL?6 concentrations in patients with MM were significantly higher than those of the normal control group ((23. 985(23. 015,26. 878) ng/L vs. 6. 205(5. 405,10. 215) ng/L,Z=-8. 262,P=0. 000). The expression of CUL48 mRNA in Stage Ⅰ,Ⅱ,Ⅲ was 2. 424 ( 1. 881, 3. 583 ) , 3. 594 ( 2. 093, 5. 738 ) , 4. 300 ( 2. 928, 7. 272) respectively, and IL?6 was 23. 115 ( 22. 723, 23. 568 ) , 23. 630 ( 22. 860, 26. 625 ) , 26. 35 ( 24. 995, 30. 550) ng/L respectively,with the increase of clinical stage,the level of CUL4B and IL?6 showed increasing trend( P<0. 05) . CUL4B concentrations were significantly decreased in MM patients after treatment than before treatment(1. 665(1. 420,2. 298) vs. 3. 455(2. 098,4. 768),Z=-4. 955,P=0. 000). IL?6 concentrations were significantly decreased in MM patients after treatment than before treatment( 15. 160( 11. 705,17. 195) ng/L vs. 23. 985(23. 015,26. 878) ng/L,Z=-7. 981,P=0. 000). CUL4B level in patients was positively correlated with IL?6( r=0. 386,P=0. 008 ) . Conclusion It is of great significance to detect CUL4B and IL?6 in patients with MM on clinical stage,the condition of judgment and efficacy observation.
9.Differentiation of pancreas carcinoma from healthy pancreas using diffusion-weighted MR imaging:comparison of apparent diffusion coefficient and intravoxel incoherent motion-derived parameters
Wei HE ; Yan ZHOU ; Jianyu LIU ; Zhenyu ZHOU
Chinese Journal of Radiology 2016;50(6):427-431
Objective To evaluate the diagnostic performance of multi ? b value DWI to differentiate pancreatic adenocarcinoma from healthy pancreas using the apparent diffusion coefficient (ADC) and parameters derived from the intravoxel incoherent motion (IVIM) theory. Methods Forty?eight patients with histopathologically proven pancreatic adenocarcinoma and fifty patients with healthy pancreas were examined at 3.0 Tesla using a single?shot echo?planar imaging DWI pulse sequence. Eight b?values ranging from 0 to 1 000 s/mm2 were used. ADC, diffusion coefficient (D), perfusion?related diffusion (D*) and perfusion fraction (f) were compared between pancreatic adenocarcinoma and healthy pancreas, t test or Mann?Whitney U test was used to compare the MRI parameters, ROC was used to evaluate the diagnostic efficiency. Results In comparison to healthy pancreatic tissue, a significant reduction of the ADC, D*and f was found in pancreatic adenocarcinoma [healthy pancreatic tissue:(1.68±0.31)×10-3mm2/s, 27.10×10-3mm2/s, (36.92±12.47)%;pancreatic adenocarcinoma:(1.51±0.37)×10-3mm2/s, 13.90×10-3mm2/s, (30.06±19.84)%] (P<0.05). No significant difference in the diffusion coefficient D was observed between the two groups (1.06× 10-3 and 1.26 × 10-3mm2/s; P>0.05). In the ROC?analyses, the area under curve for D* was the largest (0.727), followed by f and ADC in order (0.680 and 0.669). Conclusion Using the IVIM DWI approach, the D*, f and ADC value are useful for differentiating pancreatic adenocarcinoma from healthy pancreatic tissue.
10.Compound ocimum oil oral suspension in the treatment of 382 children with acute diarrhea (Piweixure Syndrome)
Zhenyu WANG ; Yu CHEN ; Lei ZHANG ; Hui SHI ; Yan LI
Chinese Journal of Primary Medicine and Pharmacy 2015;22(1):23-25
Objective To investigate the efficacy and safety of compound ocimum oil oral suspension in the treatment of children with acute diarrhea(Piweixure Syndrome).Methods 382 children with acute diarrhea(Piweixure Syndrome) were selected for the multi center and open clinical trial.All patients was treated by compound ocimum oil oral suspension based on age and weight,6 months below 3mL thrice a day,6-< 12months 5mL thrice a day,12-<24 months 10mL thrice a day,24 months upper 20-40 mL thrice a day.The course was three days.The efficacy and safety was observed.Results The total efficiency was 93.98%,there were 274 cases with marked effect and 85 case with effective in analysis on clinical efficacy.There were significant differences between before and after therapy on symptoms and signs as defecation frequency,defecation characters and defecation disesthesia (x2 =467.43,524.51,263.03,all P < 0.05).Conclusion Compound ocimum oil oral ouspension in the treatment of children with acute diarrhea(Piweixure Syndrome) has definite effect and safety.It would be applied to clinical wildly with advantages as shorten the course,decreased diarrhea times and improved clinical symptoms.