1.Extraction Process Optimization of Gastrodine in Tianma Gouteng Decoctions
Tiefeng WANG ; Yajing LI ; Mengjiao DENG ; Zhaohuan LOU ; Junyan ZHAO
China Pharmacist 2015;(3):384-386
Objective:To establish an optimal extraction technology for gastrodine in Tianma Gouteng decoctions. Methods: An orthogonal design with extract yield and gastrodine concentration as the indices was carried out to observe the influence of the extraction time, water amount and extract times on the extraction result. Results:The extract times showed significant influence on the extraction percentage of gastrodine. The best extraction parameters were as follows:adding 12-fold water and decocting 3 times with 1. 5h for each time. Conclusion:The established extraction process is feasible, which can be used in the preparation of the effective part for Tianma Gouteng decoctions with gastrodine concentration as the index.
2.Thyroid-stimulating hormone decreases insulin receptor substrate 1 expression via stimulating TNF-αsecretion in 3T3-L1 adipocytes
Yajing ZHANG ; Ling FENG ; Wei ZHAO ; Shasha TANG ; Hong ZHANG
Chinese Journal of Endocrinology and Metabolism 2014;30(1):65-68
3T3-L1 adipocytes transfected with TSH receptor (TSHR) shRNA were incubated with bovine TSH.The concentration of tumor necrosis factor (TNF)-α in culture medium was measured by enzyme linked immunosorbent asssy.Protein level of insulin receptor substrate 1 (IRS-1) was quantified by Western blotting.Tyrosine phosphorylation of IRS-1 was measured by immunoprecipitation.The results showed that 1 mIU/ml TSH significantly sitmulated TNF-α release in 3T3-L1 adipocytes [(341.85 ± 12.00 vs 522.67 ± 36.22) ng/L,P<0.01],along with the decreases in IRS-1 protein expression and its tyrosine phosphorylation (P< 0.01).These effects disappeared when TSHR expression was down-regulated with RNA interference in 3T3-L1 adipocytes.In addition,WP9QY,a TNF-α antagonist,blocked TSH-decreased IRS-1 expresssion.These results suggest that TSH downregulates IRS-1 protein expression and its tyrosine phosphorylation through stimulating production of TNF-α,and thus contributes to the development of insulin resistance.
3.Analysis of age-related changes and risk factors of renal tubular function in elderly male cases
Yanjing ZHANG ; Yajing SHANG ; Ban ZHAO ; Yonghui MAO
Chinese Journal of Geriatrics 2012;31(11):1006-1009
Objective To summarize the age-related changes and the risk factors of renal tubular function in the elderly male cases.Methods Totally 229 cases without chronic kidney disease were divided into two groups:group aged <80 years and group aged ≥80 years.We measured the urine routine,serum creatine,serum urea,urine β2-microglobin (β2-MG),urine α1-microglobin (α1-MG)and calculated the eGFR based on Cockcroft-Gault equation.Logistic regression was used to analyze the risk factors which may accelerate the progression of the renal tubular impairment.Results The average age of 229 cases was (76±10)years.There were 142 cases in the group of <80 years old and 87 cases in the group of ≥80 years old.The level of eGFR in the group of ≥80 years old was (55.0±12.7) ml/min,which was lower than that of the group of < 80 years old (80.3 ± 18.0 ml/min) (t =9.882,P<0.01).The level of urine SG was decreased in the group of ≥80 years old versus in the group of <80 years old(1.016±0.006 vs.1.013±0.006).The value changes of urine pH,urine β2-MG and urine α1-MG were of statistical differences between the two groups [(6.2±0.8) vs.(6.6±0.8),(0.96±1.02)mg/L vs.(2.08 ±3.56)mg/L,(6.67±3.57) mg/L vs.(8.71±6.59)mg/L].The correlation analysis showed that age correlated negatively with eGFR and urine SG(r =-0.692and r=-0.280,both P<0.01)and positively with urine pH(r=0.255),urine β2 MG(r=0.262),urine α1-MG(r=0.228)(all P<0.01).The Logistic regression analysis showed that coronary heart disease was an independent risk factor for the progression of renal tubular impairment (OR=4.251,P=0.002).Conclusions Renal tubular functions is decreased with ageing age in the elderly male,especially in the advanced elderly.The coronary heart disease is an independent risk factor of the progression of renal tubular impairment.
4.Effect of the deferoxamine mesylate on the prognosis of patients with intracerebral hemorrhage
Wei ZHAO ; Chunpeng ZHU ; Yao YU ; Yajing HAN ; Xuguang GAO
Clinical Medicine of China 2016;32(10):865-867,868
Objective To study the effect of the deferoxamine mesylate on the prognosis of patients with intracerebral hemorrhage(ICH) after one year. Methods From February 2013 to May 2014,spontaneous ICH patients diagnosed by computed tomography ( CT ) within 18 hours of onset in Mancheng District Hospital of Baoding were evaluated. Patients were randomly divided into experimental group and control group. The treatment of the two groups was similar except that the experimental group received deferoxamine mesylate. Patients were e?valuated by CT and neurology scale( NIHSS scale,GCS scale) at the time of admission and followed up for the first year by the RANKIN( mRS) scale. All clinical data of the two groups were compared. Results Forty?two patients were included in the study, including 21 cases in the experimental group and 21 cases in the control group,there was no significant difference in baseline data between the two groups at admission. There were 6 pa?tients with mRS ≥3 in the experimental group, and 6 patients with mRS ≥3 in the control group after one year. There was no statistically significant difference in the distribution of mRS score between the two groups after one year admission( P=1. 000) . Conclusion There may be no helpful on the prognosis of patients with intrace?rebral hemorrhage by intravenous infusion of deferoxamine mesylate,the further study is needed.
5.Evaluation of IRISiQ200 Full Automated Urine Analyzer
Danling WANG ; Yanjing ZHANG ; Yajing ZHAO ; Kaihui MA
Chinese Medical Equipment Journal 1989;0(02):-
Objective To evaluate the function of IRISiQ200 full automated urine analyzer and its clinical application of user re-classification function.Methods The reproducibility,linearity and mutual infection rate of IRISiQ200 were detected.116 fresh urine specimen were obtained from outpatient and inpatient at random.After the specimen were detected with IRISiQ200,the doubtful urine sediment images were discriminated repeatedly by user reclassification.The microscopic quantitation in uncentrifuged samples was used as reference.Results IRISiQ200 showed good reproducibility,linearity and lower mutual infection rate.The performances by using iQ-200 were: erythrocytes Y=0.596X+11.353,R2=0.834;leukocytes Y=0.468X+5.745,R2=0.708;epithelial cells Y=0.524X-2.649,R2=0.815.The performances after reclassification: erythrocytes Y=0.895X-3.328,R2=0.997;leukocytes Y=0.786X-1.880,R2=0.976;epithelial cells Y=0.911X-5.502,R2=0.992.Conclusion IRISiQ200 full automated urine analyzer shows excellent performance.There is fine correlation between iQ-200 and microscopic quantitation in uncentrifuged samples,and the urine sediment can be observed intuitively by using reclassification function.The doubtful urine sediment images can be discriminated.It can degrade the instrument error and increase the detection accuracy greatly.[Chinese Medical Equipment Journal,2008,29(2):82-83,85]
6.Current situation in studies on precision medicine and its visualization analysis
Yajing LIU ; Yuntao PAN ; Xiaoyuan ZHAO ; Cheng SU
Chinese Journal of Medical Library and Information Science 2017;26(8):41-49,53
The development trend, countries, institutions, co-authors, and subjects in MEDLINE-covered papers were analyzed by Excel, Ucinet and SciMAT respectively in order to understand the current situation in studies on precision medicine, which showed that precision medicine is in a rapid development stage, the impact power of pa-pers on precision medicine published in United States of America is high, the source journals published in United States of America are the core journals in precision medicine, the academic level of papers on precision medicine published in United States of America is high. Co-authors analysis showed that the co-authors network is of the small world effect. Subject evolution analysis revealed that the subjects involved in studies on precision medicine are increasingly rich with genomics, drug treatment and oncology accounted a large proportion. Analysis of the evo-lution in genomics, drug treatment and oncology displayed that the subjects involved in studies on precision medi-cine have experienced macro-stage, micro-stage, and combined macro- and micro-stage.
7.Studies on activation,apoptosis and proliferation of NKT like cells in untreated HIV infected patients
Tingting LIU ; Xue ZHAO ; Zining ZHANG ; Yajing FU ; Yongjun JIANG
Chinese Journal of Immunology 2016;32(12):1797-1800
Objective:To study the changes of the NKT like cells after HIV infected. Methods:We collected peripheral blood from 47 untreated HIV infected individuals and 31 healthy controls,and analyzed the expression of Annexin-V,Ki-67,HLA-DR and other surface molecules in NKT like cells by flow cytometry. Results:The NKT like cell percentage of untreated HIV infected group was (3. 03±1. 61)%,the NKT like cell percentage of normal control group was (8. 30±7. 42)%,the percentage of NKT like cells in HIV infected individuals was significantly lower than the healthy controls ( P<0. 05 );the NKT like cell HLA-DR expression of untreated HIV infected group and normal control group were (5. 40±4. 10)% and (0. 89±0. 83)%,the NKT like cell Annexin-V expression of untreated HIV infected group and normal control group were (30. 21±13. 15)% and (5. 40±8. 05)% ,and the activation and apoptosis of NKT like cells was significantly higher after HIV infection compared with health individuals (P<0. 001,P<0. 01),the degree of activation was negatively correlated with CD4 count (r=-0. 885 7,P<0. 05);and the NKT like cell Ki-67 expression of untreated HIV infected group and normal control group were (11. 15±4. 76)% and (27. 63±18. 31)%,the proliferation ability was significantly lower after HIV infection compared with healthy controls(P<0. 05). Conclusion:HIV infection can significantly reduce the number of NKT like cells and its ability to proliferate,and increase its ability to activation and apoptosis.
8.Clinical exploration of discriminant model of progressive ischemic stroke
Dali WANG ; Yulan ZHOU ; Xiaojing ZHAO ; Yajing WANG ; Sujun WANG
Clinical Medicine of China 2008;24(5):467-469
Objective To explore the related risk factors of stroke in progression(SIP)and establish discriminant models to predict the incidence.Methods 31 possible related factors were compared between progressive group(n=110)and non-progressive group(n=336),and the related factors were analyzed in discriminant models.Results Discriminant models were established by 16 factors,including arterial stenosis,OCSP subtype,blood glucose,low density lipoprotion,creatinine,the sign of early cerebral infarction on CT,the temperature increasing and the rapidly decreasing of blood pressure in 48 hours after admittion.The evaluation to the models by interview data and prospective data showed a satisfied result.Conclusion Arterial stenosis,OCSP subtype and other significant factors selected by model will be helpful in prediction of SIP.
9.THE ANTI-FATIGUE EFFECT OF BLACK CURRANT EXTRACTS IN MICE
Li LI ; Xiaoguo ZHAO ; Long MA ; Yajing GU ; Xudong MA
Acta Nutrimenta Sinica 2004;0(05):-
Objective To study the anti-fatigue function of black currant extracts in mice. Method Kunming mice (SPF) were randomly divided into black currant extracts high, middle, low dose group, black currant natural juice dose group and control group according to their body weights. Mice were administered ig daily for 30 d. The loaded-swimming time ,hepatic glycogen ,blood urea nitrogen were measured. Results Black currant extracts high, middle, low dose groups could increase the time of loading swimming,and the hepatic glycogen content,and decrease blood urea nitrogen in mice. All indices above were more than those in black currant natural juice except the blood urea nitrogen content was lower. Conclusion Black currant extracts could alleviate physical fatigue in mice, and be better than black currant natural juice.
10.Research advances in radiation?induced heart disease
Liming XU ; Xi CHEN ; Yajing YUAN ; Lujun ZHAO
Chinese Journal of Radiation Oncology 2017;26(3):358-363
Radiation?induced heart disease ( RIHD) is a common type of radiation?induced damages in chest radiotherapy. There are no obvious short?term symptoms in patients with RIHD. However, RIHD causes irreversible permanent damages to the heart over time, which undermines the quality of life. Patients with severe RIHD even have a risk of death from myocardial infarction caused by coronary atherosclerosis. This paper summarizes the research advances in epidemiology, diagnosis, mechanisms of radiation?induced injury in various parts of the heart, radiotherapy techniques, and treatment. Reduction in radiation range and dose, early diagnosis, and early treatment are recommended for patients to reduce heart injury and improve the quality of life.