1.Cloning of ICAT and its anti-cancer function
Journal of Chongqing Medical University 1987;0(01):-
Objective:To Clone the cDNA of human ICAT,and express it in tumor cell,to investigate its anti-tumor effect.Method:the ICAT cDNA was amplified by RT-PCR,the ukaryotic expression plasmid pcDNA3.1-ICAT was constructed,MCF-7 and MDA-MB231 breast cancer cells were transfected by pcDNA3.1-ICAT using liposome and the cancer cell proliferation was estimated by MTT.Result:The product of RT-PCR was about 260bp,its sequence was the same as that reported,the transfection efficiency for MCF-7 and MDA-MB-23 cells was about 26%,and inhibiting efficiencies on the proliferation of the cancer cell transfected were 18.1% and 16.2% respectively.Conlusion:The cDNA of ICAT was cloned,and its expression in MCF-7 and MDA-MB-23 cells may inhibit the proliferation of these cancer cells.
2.Relationship between serum TNF-α and IL-6 levels and respiratory function in patients with chronic obstructive pulmonary disease
International Journal of Laboratory Medicine 2017;38(13):1781-1783
Objective To investigate the relationship between serum TNF-α and IL-6 levels and respiratory function in patients with chronic obstructive pulmonary diseases.Methods 50 cases in our hospital diagnosed as chronic obstructive pulmonary disease from September 2015 to September 2016 were selected as the observation group,and 40 cases of healthy people were enrolled as the control group,serum IL-6,TNF-α were detected by ELISA in those people,correlation analysis was used to explore the relation ship between serum inflammatory factors,grading of disease and respiratory function in patients with chronic obstructive pulmonary disease(COPD).Results In the observation group TNF-α[(4.27±0.34)μg/L],IL-6[(21.54±3.67)ng/L] were significantly higher than those in healthy control group[(1.36±0.29)μg/L,(10.27±1.36)ng/L],the difference were statistically significant(P<0.05).COPD patients in different GOLD stage differed in the serum contents of TNF-α,IL-6 and symptom score(P<0.05).The serum contents of TNF-α,IL-6 and symptom score were higher when the GOLD stage got higher.TNF-α,IL-6 was positively correlated with symptom score,lung function,GOLD classification(P<0.05).Conclusion Serum levels of TNF-α,IL-6 and COPD are positively correlated with the patient′s condition,and positive correlation with pulmonary function.
3. Effect of borneol on absorption of chlorogenic acid by two absorption models and its correlation of these absorption models
Chinese Pharmaceutical Journal 2015;50(9):793-796
OBJECTIVE: To investigate the enhancing effect of borneol on the absorption of chlorogenic acid (CGA) with two different biological models and to evaluate the correlation of these two models. METHODS: The in situ rat perfusion model was used to investigate the enhancing effect of borneol on the absorption of CGA. The in vivo pharmacokinetics study was carried out to evaluate the correlation of the two-compartment open model. RESULTS: With the in situ rat perfusion model, the absorption rate constant (Ka) of CGA was 0.083 4 h-1, which was up to 1.58-fold higher by borneol. The results of in vivo pharmacokinetics study in rats suggested that 0.04% borneol could increase the relative bioavailability by 116.02% and maximum plasma concentration increased slightly. The consistent result of these two different absorption models was provided (r=0.941). CONCLUSION: Borneol could promote the oral absorption of CGA.
4.Progress in laboratory diagnosis of heparin induced thrombocytopenia
Chinese Journal of Laboratory Medicine 2016;39(10):795-800
Heparin induced thrombocytopenia ( HIT ) is a severe side effect of heparin with antibody-mediation.Laboratory assays can be divided into two major categories, about functional assays and HIT antibodiesdetection.Thefunctional assays, such as the serotonin release assay ( SRA ) and heparin-induced platelet activationassay( HIPA) , are sensitive and specific for HIT.They arethe reference standard assays generally, but have thedeficiencies of complicated operation and time-consuming, and cannot be used as a routine examination. TheHIT antibodiesdetections, such as ELISA, immune turbidimetry assay, chemiluminescent assay and lateral flow immunoassay, have high diagnostic sensitivityandareavailable at routine laboratories.They can exclude the diagnosis of HIT or beused to diagnose HIT effectively combined with the pre-test probability score(4Ts score) of HIT.
5.Expression of toll-like receptor 4 in hepatic ischemia-reperfusion injury
Chinese Journal of Organ Transplantation 2005;0(11):-
Objective To analyze the expression and the role of Toll-like receptor 4 (TLR4) and the effect of N-acetylcysteine (NAC) on hepatic ischemia- reperfusion (I/R) injury.Methods The rat model of 45 min hepatic ischemia followed by 24 h reperfusion was used. Animals were divided into 3 groups: the pseudoperated control group (P), I/R group and treated group with NAC at a dose of 300 mg/kg at 5 min before reperfusion (I/R-NAC). Plasma concentrations of ALT, AST and lipopolysaccharide (LPS) at various time points were measured. The expression of TLR4 protein and mRNA was detected in liver tissue by using immunohistochemistry and RT-PCR.Results The TLR4 expression, plasma ALT, AST and LPS levels were markedly increased during 45 min hepatic ischemia and 24 h reperfusion, but they were lower in I/R-NAC group and no alteration almost in group P. The plasma concentrations showed a significant correlation between ALT, AST and LPS at different time points in I/R group and I/R-NAC group.Conclusion LPS and TLR4 play a prominent role in the pathophysiological processes of I/R and NAC can be of therapeutic potential for reducing the expression of TLR4 mRNA and alleviating endotoxemia derived from gut.
6.Role and mechanism of mitophagy in ventilator-induced lung injury in rats
Chinese Critical Care Medicine 2017;29(1):6-10
Objective To explore the role and mechanism of mitophagy in ventilator-induced lung injury (VILI) in rats.Methods Thirty-six adult Sprague-Dawley (SD) rats were randomly divided into three groups (eachn = 12): spontaneous breathing group (CON group), normal tidal volume (VT) group (NVT group, VT was 8 mL/kg) and high VT group (HVT group, VT was 40 mL/kg). All rats received endotracheal tube by tracheostomy. The rats in CON group were maintained spontaneous breathing, while those in NVT and HVT groups received mechanical ventilation with corresponding VT. After 4 hours of ventilation, the serum, bronchoalveolar lavage fluid (BALF) and lung tissues were harvested. The lung wet/dry weight (W/D) ratio was assessed, and the histopathology changes were observed by light microscopy, and the ultra structure changes in type Ⅱ alveolar epithelial cell (AECⅡ) were observed by electron microscopy. The levels of interleukin (IL-1β and IL-6) and tumor necrosis factor-α (TNF-α) in serum and BALF were determined by enzyme linked immunosorbent assay (ELISA). The total protein in BALF was measured by bicinchoninic acid methods, and the infiltrated cells in BALF were counted. The mRNA expressions and protein levels of microtube associated light chain 3B (LC3B), mitochondrial DNA coded cytochrome C oxidase Ⅳ (COX-Ⅳ) and nuclear factor-κB p65 (NF-κB p65) in lung tissues were determined by real-time fluorescent quantitation reverse transcription-polymerase chain reaction (RT-qPCR) and Western Blot.Results The histopathology of lung tissue and the ultra structure of AEC Ⅱ were normal in CON group and NVT group, and the obvious inflammatory changes and pathological injury were found in HVT group. Compared with CON and NVT groups, the W/D ratio in HVT group was significantly increased (8.53±1.05 vs. 5.12±0.65, 5.57±0.55, bothP < 0.05), and total protein, infiltrated cells, and IL-1β, IL-6 and TNF-α in BALF were significantly increased [total protein (g/L): 2.35±0.45 vs. 1.46±0.34, 1.76±0.51; infiltratedcells (×105/mL): 2.05±0.48 vs. 0.40±0.08, 0.60±0.23; IL-1β (ng/L): 119.82±6.56 vs. 76.15±3.32, 79.39±4.44; IL-6 (μg/L): 4.10±0.52 vs. 1.97±0.40, 2.27±0.36; TNF-α (mg/L): 1.49±0.28 vs. 0.43±0.23, 0.61±0.24; all P < 0.05], IL-1β, IL-6 and TNF-α levels in serum were also elevated [IL-1β (ng/L): 127.53±7.10 vs. 79.40±2.80, 82.95±2.25; IL-6 (μg/L): 6.28±0.82 vs. 2.96±0.35, 3.36±0.72; TNF-α (mg/L): 1.59±0.42 vs. 0.53±0.22, 0.78±0.25; allP < 0.05]. The mRNA expressions and protein levels of LC3B, COX-Ⅳ and NF-κB p65 in lung tissue of HVT group were significantly higher than those of CON group and NVT group, the mRNA expressions of LC3B-Ⅱ, COX-Ⅳ and NF-κB p65 were (3.52±0.90), (3.76±1.16) and (9.54±2.06) folds of those in CON group, and the protein expressions were (1.76±0.24), (1.65±0.20) and (1.91±0.12) folds of those in CON group, with significantly statistical differences (allP < 0.05). There were no significant differences in the parameters mentioned above between NVT group and CON group.Conclusion Mitophagy may be associated with VILI resulting from escaped mitochondrial DNA for activation of inflammation.
7.How Essential the Anti-diabetic Medications in Chinese Hospitals?
China Pharmacy 2016;27(24):3313-3319
OBJECTIVE:To analyze the treatment of anti-diabetics medicines and use of essential medicines in Chinese hospi-tal,and provide evidence for developing medicine policy,preventing and treating diabetes. METHODS:Data about annual con-sumption from 2012 to 2014 were extracted from the IMS CHPA database to analyze the object medicines of the target drugs with top 60% consumption volume of oral anti-diabetics and insulins,and the proportion of consumption volume and consumption amount in insulin,its analogues and three generations of insulin by 2 administration mode in Chinese hospital. RESULTS & CON-CLUSIONS:Acarbose tablet manufactured by Beijing Bayer HealthCare Co.,Ltd. and Metformin tablet manufactured by Shanghai Squibb Pharmaceutical Co.,Ltd. had occupied the top 2 of volume consumption in Chinese hospitals,totally accounting for 25%-26%. The 60% volume consumption of insulins and its analogues concentrated on one cheap local animal insulin(volume ac-counting for 13%-16% and amount accounting for 1%)and those imported or joint venture-made the second and third generation of insulins and analogues administrated by pen/cartridge. No matter insulins or oral anti-diabetics,the top consumption was listed as National Essential Medicine System,but none was recommended by WHO. Multi-pharmas dominate the Chinese anti-diabetic mar-ket through introducing new combined formulations and new dosage forms. WHO non-listed anti-diabetics have beautiful sales in Chinese hospitals,while traditional cheap medications for the general public grew slowly and with low profits. Chinese hospitals generally consumed more expensive new generations and original research manufacturers of anti-diabetics. As a lower middle in-come country that just established a universal coverage of basic health insurance,China still has a huge population with very limit-ed benefit package. Efficient use of limited health resources is essential for a successful health reform and a sustainable development of the health system in China.
8.The Change Feature of the Signal of Fusiform before and after the Vocabulary Learning
Space Medicine & Medical Engineering 2006;0(06):-
Objective To explore the function of fusiform in learning process according to the change of its activation volume and intensity.Methods Ten Chinese normal university students with Guangdong dialect performed the verb generation.fMRI was used to scan the activities of brain.Deconvolution and ANOVA were used to deal with the data of individuals and groups respectively.Results After practice,the activations of the most brain areas were weakened in different degree of great quantities along with practice and the activation of fusiform disappeared.Conclusion Learning leads to the change of brain activation.The function of fusiform is not specific,but general neural activation during learning process.
9.The diagnostic significance of the blood flow information of fetus obtained from Doppler ultrasound in the diagnosis of gestational diabetes mellitus
China Medical Equipment 2017;14(9):71-74
Objective:To explore the application of fetal multi-organ hemodynamics in the detection and evaluation of oxygen supply and blood supply for fetus in the third trimester of pregnancy. Methods: 42 pregnant women with gestational diabetes mellitus and 42 healthy pregnant women were divided into observation group and control group, respectively. All of the fetuses of pregnant women received Doppler ultrasound examination, and the pulsatility index(PI), resistance index(RI) and systolic/diastolic(S/D) ratio of umbilical artery (UA)and middle cerebral artery (MCA) of every fetus in the two groups were observed. Besides, the number of fetal distress was recorded and the relationship between fetal distress rate and gestational diabetes mellitus were calculated.Results:The PI, RI and S/D of MCA of fetuses of pregnant women with gestational diabetes mellitus was significantly higher than that of healthy pregnant women (t=7.52,t=6.04, t=8.69,P<0.05). And the PI, RI and S/D of UA of fetuses of pregnant women with gestational diabetes mellitus also was significantly higher than that of health pregnant women (t=11.95,t=9.78,t=8.95, P<0.05). Besides, the fetal distress rate of observation group was significantly higher than that of control group (x2=19.56,P<0.05).Conclusion: The fetal blood flow information which obtained from Doppler ultrasound has very importantly value in the diagnosis of gestational diabetes mellitus, and it verifies the relationship between fetal distress rate and gestational diabetes mellitus. It provides beneficial basis for the prevention and treatment of the gestational diabetes mellitus in the clinical practice.
10.Clinical application and expectation of amifostine applied during treatment of hematological malignancies
Journal of Leukemia & Lymphoma 2009;18(4):252-256
Although hemopoietic stem cell transplant have been used in treating malignant diseases of hematological system using high-dose chemotherapy and radiotherapy before transplant or non-transplant is very important. When the dose of chemotherapy and radiotherapy exceeds the ability the tissues can bear, normal tissue can be badly damaged, which limits the therapeutic efficacy of chemotherapy and radiotherapy. Treatments of hematological malignancies are expected to achieve the best therapeutic efficacy and the least damage of normal cells and tissues. Amifostine is an inorganic thiophosphate eytoprotective agent,its chemname is S-2(3-aminopropyl) amino dihydrogen phosphate.h is a prodrug whose active constitutent is free thiol,it can clears free radicals produced from cytotoxic drugs and radiotherapy in tissues exposed to them. It is a broad-spectrum cytoprotective agent which can protect multifarious normal tissues against damage of chemotherapy and radiotherapy. Using amifostine in proconditioning of hemopoietic stem cell transplant can lessen hematological and renal toxicity, it can also lessen renal toxicity produced by chemotherapeutics as platinum,cyclophosphamide and vincristine. The main purpose of this review is to discuss the cytoprotection of amifostine in hematological malignancies.