1.Effects of 3 carbohydrates on CAP10 promoter activity of Cryptococcus neoformans capsule-associated gene
Zhiyu ZHAO ; Hai WEN ; Sunxiao CHEN
Academic Journal of Second Military Medical University 1982;0(02):-
Objective:To study the effects of glucose,mannose and galactose on CAP10 promoter activity of Cryptococcus neoformans capsule-associated gene.Methods: Yeast cells were transfected with plasmid containing a 951 bp length of 5′ upstream flanking sequence of CAP10 coding region and a reporter gene,chloramphenicol acetyl transferase(CAT);the transfectants were treated with different concentrations(10,20,40,60,80 mg/ml) of glucose,mannose and galactose.CAT activity was assessed by ELISA method and CAT activities of different groups were compared.Results: Different concentrations of glucose and mannose had no obvious influence on CAT activity;different concentrations of galactose had obvious influence on CAT activity and the influence was positively dependent with its dose within the experimental concentration range.Conclusion: Glucose and mannose have no obvious effect on the activity of CAP10 promoter;galactose has obvious inductive effect on activity of CAP10 promoter,suggesting that CAP10 gene might be related with galactose metabolism.
2.The Effect of Liquiritin on Body Weight and Behavior of Depressive Rats
Zhiyu ZHAO ; Weixing WANG ; Hongzhu GUO
Chinese Mental Health Journal 2002;0(12):-
Objective:To observe the effect of liquiritin on body weight and behavior in depression model rats.Methods:Seventy-two male Sprague-Dawley(SD)rats were randomly assigned into normal control group,model group(stress+vehicle),fluoxetine group(stress+ fluoxetine)and three liquiritin groups(stress+liquiritin at different dose).The behavior of rats was detected by sucrose consumption test and forced swimming test.Results:The model rats showed significantly lower body weight(429?45/494?37,P
3.Immunohistochemical analysis of apoptosis-associated genes in salivary tissues of Sjgren syndrome
Yinghuai ZHANG ; Zhiyu JIA ; Yunzhuan ZHAO
Journal of Practical Stomatology 1996;0(02):-
Objective:To investigate the expression of apoptosis-associated genes bcl-2, bax, fas and fasL in salivary tissue with Sjgrens syndrom(SS). Methods:Bcl-2, Bax, Fas and FasL in salivary tissue from 16 patients with SS and 10 normal controls were detected by SP immunohistochemical staining.Results:Expression of Bcl-2 was significantly decreased(P
4.Study on Extracting with Supercritical CO_2 Fluid from Polyrhachis vicina Roger and Analysis on the Chemical Constituents by GC-MS
Kaijun ZHAO ; Cunhai PU ; Zhiyu GUAN
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(06):-
Objective To study the optimum parameters of the supercritical CO2 fluid extraction of Polyrhachis vicina Roger and chemical constituents of ant oil. Methods The experiments were designed with the uniform design. Three factors are extraction pressure, temperature and time. GC-MS was applied for analyzising. Results The optimum condition was obtained:the extraction pressure is 36 MPa, the temperature of extraction is 40 ℃ and extraction time is 50min. 45 components were identified from 60 chromatographic peaks. The main chemical constituents were (Z)-9-octadecenoicacid (48.278%), hexadecanoicacid (17.574%), (Z)-9-hexadecenoi (4.912%), cholesterol (2.957%). There are some linear paraffin in ant oil. Conclusion This method can extract the ant oil from Polyrhachis vicina Roger quickly and efficiently. This experiment provide foundation for exploitation and utilization of ant resource.
5.Drying process of Qingxiang Tablets by spray-drying method
Rupo BAO ; Haoru ZHAO ; Zhiyu ZHANG
Chinese Traditional Patent Medicine 1992;0(12):-
AIM: To optimize the spray-drying process of Qingxiang Tablets. METHODS: Excipients were selected in terms of hygroscopicity and yield rate of dried powders with several excipients added;then,the process parameters,such as the relative density of fluid extracts,intake temperature,and the input speed of liquid feedstock were optimized by orthogonal experiment,in which the transfer rate of peoniflorin,a constituent in the formulation,and dried powder yield rate were set up as the evaluation index. RESULTS: The optimal processing conditions were obtained and validated as follows: relative density of liquid feedstock was 1.12 mg/mL(containing 6%?-CD),the input speed was 10 mL/min and intake temperature was at 190 ?C. CONCLUSION: The optimal process is stable and the experimental results provide the basis of industrial production.
6.Association of early prognosis and risk factors about early neurological deterioration in aged patients with cerebral hemorrhage in basal ganglia
Guanyan ZHAO ; Zhiyu ZHOU ; Huan LAN
Chinese Journal of Postgraduates of Medicine 2017;40(1):76-79
Objective To study the association of early prognosis and risk factors about early neurological deterioration (END) in aged patients with cerebral hemorrhage in basal ganglia. Methods One hundred and thirty-nine aged patients with cerebral hemorrhage in basal ganglia were selected. The patients were divided into END group (59 cases) and non-END group (80 cases), the clinical data were retrospectively analyzed. The patients were followed up 3 months after discharge, the prognosis was evaluated by modified Rankin scale. Logistic regression analysis was used to determine the independent risk factors of END. Results The incidence of END was 42.4%(59/139). The incidence of unfavourable prognosis in END group was significantly higher than that in non-END group:78.0%(46/59) vs. 30.0%(24/80), and there was statistical difference (P<0.05). The score of Canadian stroke scale (CSS) at admission in END group was significantly lower than that in non-END group: (5.2 ± 2.1) scores vs. (6.9 ± 1.7) scores, but the white blood cell count at admission, hematoma volume and brain ventricle hemorrhage rate were significantly higher than those in non-END group: (10.7 ± 2.9) × 109/L vs. (7.9 ± 2.4) × 109/L, (17.4 ± 14.9) ml vs. (11.2 ± 10.5) ml and 42.4%(25/59) vs. 18.8%(15/80), and there were statistical differences (P < 0.05). There were no statistical differences in sex, age, systolic blood pressure, diastolic blood pressure, body temperature, random blood glucose, fibrinogen, activated partial thromboplastin time, prothrombin time and the incidences of hypertension, smoking history, stroke, diabetes mellitus, hyperlipidemia between 2 groups (P>0.05). The Logistic regression analysis results showed that brain ventricle hemorrhage and white blood cell count at admission were independent risks factor for END in aged patients with cerebral hemorrhage in basal ganglia(P < 0.05 or < 0.01). Conclusions The aged patients with cerebral hemorrhage in basal ganglia will be prone to END, the brain ventricle hemorrhage and white blood cell count at admission are independent risks factor for END, and the early prognosis is poor.
7.Induction of immune tolerance using kidney-bone marrow transplantation: Does it promote chimerism formation?
Zhiyu WANG ; Yongchao GE ; Xiaowu ZHAO ; Shuyi WU ; Baodong CHANG
Chinese Journal of Tissue Engineering Research 2009;13(53):10457-10460
BACKGROUND: Infusion of hemopoietic stem cell from donors can promote the chimeric formation and induce specific immunologic tolerance in the allograft recipients. However, the pretreatment for cell transplantation has great toxicity to recipients. So immunosuppressant combined bone marrow infusion is introduced to anti graft versus host reaction. OBJECTIVE: Based on microchimerism, to study the security and associativity of chimera formation induced by kidney-bone marrow transplantation and immunologic tolerance.DESIGN, TIME AND SETTING: The contrast observation was performed at the department of urinary surgery, The Third People's Hospital of Zhengzhou City from January 1998 to December 2005.PARTICIPANTS: According to ABO/Rh blood type and HLA matching, 96 female patients with chronic renal failure and waiting for kidney transplantation were divided into 2 groups, In the combination group, patients received kidney combined bone marrow transplantation; the other uremia patients received the other kidney of cadavers were served as control group. The donors were 48 healthy males. METHODS: Bone marrow of donors was collected simultaneously with kidney obtain and preserved with cryoprotectant at -198 ℃ in nitrogen canister. After kidney transplantation, large dose of anti-human lymphocyte immune globulin were used for 2 weeks, then (0.9-2.5)×10~8/kg mononuclearcell was reinfused. PCR-SRY was used to identify donor derived cell-chimerism. Lymphocyte subgroup of recipients was determined by blood test; and interleukin 10 was measured by enzyme linked immunosorbent assay; in addition, the mass concentration of tumor necrosis factor α and tumor necrosis factor β was detected. MAIN OUTCOME MEASURES: Chimerism, lymphocyte subsets and cytokines were detected at various time points following transplantation. Simultaneously, the transplantation results and complication status of recipients were observed. RESULTS: The positive rate of chimera in the combination group was greater than that of the control group (P < 0.05). The 3-year follow-up showed that incidence differences of acute rejection between recipients with positive chimera and recipients with negative chimera had significance (13%, 35%, P < 0.05). There was no graft versus host disease occurred in the combination group. CONCLUSION: Kidney-bone marrow transplantation can augment chimerism in early postoperative period, and significantly reduce the rate of acute rejection, which is safe and beneficia1to induce specific immunologic tolerance in the renal allograft recipients.
8.Risk factors of hip fracture in elderly patients from Yongkang,Zhejiang province
Chunsheng YU ; Yirong ZHAO ; Zhiyu LYU ; Chunyong WANG
Chinese Journal of Primary Medicine and Pharmacy 2017;24(5):679-682
Objective To explore the risk factors of hip fracture in elderly patients from Yongkang.Methods From August 2014 to August 2016,468 elderly patients with hip fracture admitted to Department of Orthopedics, Orthopedics Hospital of Yongkang were prospectively collected as study group,and 150 elderly people admitted to Orthopedics Hospital of Yongkang and Community Health Service Center for health examination were randomly selected as control group.The complications,daily living habits,bone density and menstruation of the female were observed between the two groups.Results Compared with the control group,the incidence rate of diabetes in the study group increased significantly(28.63% vs.12.67%,χ2 =15.544,P =0.000),the rate of height decreased more than 3cm increased significantly (16.88% vs.8.00%,χ2 =7.134,P =0.008),the proportion of long -term use of hormone significantly increased (18.59% vs.10.00%,χ2 =6.082,P =0.014),the rate of physical exercise decreased signif-icantly (14.32% vs.22.67%,χ2 =5.793,P =0.016),the rate of bed ridden increased significantly (5.34% vs 1.33%,χ2 =4.369,P =0.037),the bone density of femoral neck decreased significantly[(0.99 ±0.12)g/cm2 vs. (1.10 ±0.12)g/cm2 ,t =10.139,P =0.000].When it came to the females,the rate of menopause before the age of 45 years in the study group was higher than that in the control group (33.23% vs.22.22%,χ2 =4.299,P =0.038).Conclusion Diabetes,height decrease >3 cm,long -term use of hormones,lack of physical exercise,bed ridden and bone density decrease are risk factors of hip fracture in elderly people from Yongkang,and menopause before the age of 45 is a risk factor for hip fracture in elderly women.
9.Insulin-like growth factor 1 promotes in vitro proliferation of chondrocytes in traumatic arthritis
Guang ZHAO ; Jifeng JING ; Zhiyu ZHANG ; Jiajun ZHU ; Yan CUI
Chinese Journal of Tissue Engineering Research 2014;(2):183-186
BACKGROUND:The early damaged chondrocytes are susceptible to de-differentiate and exert unstable phenotype during the in vitro culture, thus needing some growth factors.
OBJECTIVE:To observe the promotion effect of insulin-like growth factor 1 on the in vitro proliferation of chondrocytes in adult rabbits with traumatic arthritis.
METHODS:Traumatic arthritis models of adult rabbits were established by using the modified Hulth method. After the models were successful y established, the distal femur and proximal tibia were harvested under sterile conditions, the chondrocytes were cultured. The cultured cells were divided into two groups:control group was cultured with Dulbecco’s modified Eagle’s medium containing 10%fetal bovine serum, while experimental group was cultured with Dulbecco's modified Eagle’s medium containing 100μg/L insulin-like growth factor 1. The effect of insulin-like growth factor 1 on the proliferation of chondrocytes in adult rabbits with traumatic arthritis was determined through the cytomorphology, cellcounting, and cellactivity.
RESULTS AND CONCLUSION:The chondrocytes in adult rabbits with traumatic arthritis were successful y cultured, the majority of cells were mini-cells, presenting smal fusiform, round or polygonal shape. Hematoxylin-eosin staining showed that the number of cells in experimental group was higher than that in control group. MTT assay found that the absorbance of cells in experimental group was greater than that in control group (P<0.01). Our findings indicate that, insulin-like growth factor 1 can promote the in vitro proliferation of chondrocytes in adult rabbits with traumatic arthritis.
10.Effects of crocetin on VCAM-1 expression in human umbilical vein endothelial cells and monocyte-endothelial cell adhesion.
Shuguo ZHENG ; Mengqiu ZHAO ; Younan REN ; Jieren YANG ; Zhiyu QIAN
Acta Pharmaceutica Sinica 2015;50(1):34-8
Crocetin, a naturally occurring carotenoid, possesses antioxidant and antiatherosclerotic properties, of which the underlying mechanism remains unclear. In the present study, we examined the effects of crocetin (0.1, 1, 10 μmol·L(-1)) on angiotensin II (Ang II, 0.1 μmol·L(-1)) induced expression of vascular cell adhesion molecule-1 (VCAM-1) in human umbilical vein endothelial cells (HUVECs) and monocyte-endothelial cell adhesion. The effects of crocetin on the activation of nuclear factor kappa B (NF-κB) and intracellular reactive oxygen species (ROS) were also observed. The results demonstrated that crocetin notably suppressed Ang II induced NF-κB activation (P<0.01) and VCAM-1 expression (P<0.05, P<0.01) in HUVECs, accompanied by a markedly reduced monocyte-endothelial cell adhesion (P<0.05, P<0.01). In addition, preincubation with crocetin resulted in a significant enhancement of cellular antioxidant capacity (P<0.05, P<0.01), while Ang II induced intracellular ROS decreased markedly (P<0.05, P<0.01). These results indicated that crocetin was capable of suppressing Ang II induced VCAM-1 expression and monocyte-endothelial cell adhesion by suppression of NF-κB activation, which might be derived from the enhancement of antioxidant capacity and subsequent reduction of intracellular ROS.