1.Distributive retrieval methods of special medical resources on foreign navy networks
Chinese Journal of Medical Library and Information Science 2015;(6):37-41
The significance of distributive retrieval methods of special medical resources on foreign navy networks was analyzed from the development of medical information resources and the value of medical information on foreign navy networks followed by a description of key words retrieval method, classification engine retrieval method, and link retrieval method of resources on foreign navy networks in order to speed up the development of navy special medical literature in China .
2.Progress of Th17 cells in chronic rhinosinusitis.
Yang WANG ; Zhenzhen TANG ; Dongfang YAO
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2016;30(2):161-166
Chronic rhinosinusitis is a common disease and frequently encountered disease in otolaryngology, but the therapeutic effect is not ideal. While its pathogenesis is exploring in the continuously. Found in the recent years, Th17 cells are a new subset of T cells and closely related with inflammatory disorders, autoimmune diseases and cancer. Its differentiation, regulation and biological effects are widely noted as a hot area of research. This review explores the discovery of differentiation and regulation of Th17 cells, the relationship between related cytokines and chronic rhinosinusitis, in order to have a beteer knowledge of chronic rhinosinusitis. This review regards Th17 cells as the main clue, nevertheless, lacking consideration of the impacts of other factors on chronic rhinosinusitis.
Chronic Disease
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Humans
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Rhinitis
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immunology
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Sinusitis
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immunology
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Th17 Cells
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immunology
3.The influence on smoking and drinking status of officers and soldiers after health management
Zhenzhen WANG ; Xianrong LUO ; Xuan YANG ; Jun YANG ; Shaen LI
Chinese Journal of Behavioral Medicine and Brain Science 2014;23(3):261-263
Objective To investigate the influence of smoking,drinking cognition and behavior among the officers and soldiers in South China War Zone after health management,and to explore the establishrent of appropriate health management model for the army.Methods Harmfulness cognition,rate,quantity,types of drinking and smoking were investigated and analyzed before and after health management among 1 102 officers and soldiers in South China War Zone by providing a set of health education,psychological counseling service,disease and lifestyle intervention of health management as a whole.Results The harmfulness cognition rate of smoking and drinking raised from 95.6% and 94.1% to 98.7% and 97.8%,the smoking and drinking rate dropped from 64.7% and 72.6% to 37.2% and 61.4% after health management.The x2 values were 18,18.9,153,20.8,and had significant difference (P<0.001).The rate of occasional smoking,a small amount of smoking,often smoking dropped from 28.3%,25.8%,45.9% to 18.5%,12.2%,31.5% as well as the rate of occasional drinking,a small amount of drinking,often drinking has dropped from 56.6%,32.3%,11.1% to 49.8%,23.4%,4.1%.The x2 values were 26.8,62.1,31,9.61,8.06,19.4,and had significant difference (all P<0.01).Conclusion The health management improves the harmfulness cognition of smoking and drinking,and decreases the rate and quantity of smoking and driking.It has a positive effect on improving the heahh literacy and developing health way of life in officers and soldiers.
4.Application of HC-videolaryngoscopy in nasotracheal intubation for patients with predicted difficult airway undergoing oral maxillofacial surgery
Xudong YANG ; Ruichang LIU ; Ling GAO ; Zhenzhen LI ; Xiaodong WANG
Journal of Practical Stomatology 2015;(6):833-836
Objective:To investigate the efficacy of HC-videolaryngoscopy in nasotracheal intubation for patients with predicted diffi-cult airway undergoing oral maxillofacial surgery.Methods:70 patients undergoing oral maxillofacial surgery with predicted difficult airway were enroled and randomly divided into 2 groups(n =35).Nasotacheal intubation was performed with HC-videolaryngoscopy (group VL)and Macintosh laryngoscopy(group ML)respectively.The duration and success rate of intubation,degree of glottis expo-sure,hemodynamic response as well as intubation related complications were evaluated.Results:There was higher success rate of first attempt(P <0.05),shorter intubation duration(P <0.05)and fewer frequency of multiple intubation(P <0.05)in group VL than in group ML.During intubation,the first and the best Cormack-Lehane laryngeal view was better in group VL(P <0.05)and less intuba-tion assistance was required in group VL(P <0.05).1 3 patients in group ML were intubated with VL after failure of the first attempt with ML.Conclusion:HC-videolaryngoscopy is safe and effective in the nasotracheal intubation for the patients with predicted difficult airway undergoing oral maxillofacial surgery.
5.Relationship between peripheral Treg/Th17 cells and pregnancy outcomes in the first trimester of patients with unexplained recurrent spontaneous abortion
Li YANG ; Mingyan TANG ; Zhenzhen XU ; Aihua GAO ; Hong ZHANG
Chinese Journal of Laboratory Medicine 2017;40(3):174-179
Objective To investigate Treg and Th17 cell numbers in the peripheral blood of patients with unexplained recurrent spontaneous abortion (URSA),with an aim to elevate their potential for predicting pregnancy outcomes.Methods Peripheral blood was collected from 60 URSA pregnant women and 56 healthy pregnant women during their first trimester in the Department of Reproductive Endocrinology of the Second Affiliated Hospital of Soochow University from January 2014 to June 2015.The counts of regulatory T cell (Treg),T helper cell 17 (Th17),CD4 positive T cell (CD4+ T cell) and total lymphocytes in the peripheral blood were determined by flow cytometry.Calculated the ratios of Treg/CD4+ T cells,Treg/total lymphocytes,Th17/CD4+ T cells,Th17/total lymphocytes and Treg/Th17,then the pregnancy outcomes were followed up.According to the different pregnancy outcomes,the patients were divided into three groups: URSA successful delivery group (23 cases),URSA re-miscarriage group (37 cases) and normal successful delivery group (44 cases).Non-parametric test were used to compare the differences between groups.Results There were no difference between the URSA re-miscarriage group and URSA successful delivery group in the CD4+ T cell counts[(1 570.16±519.56) vs (1 571.83±450.37),t=0.01,P=0.99]and total lymphocytes[(4 497.11±975.48) vs (4 558.52±1 032.54),t=0.23,P=0.82].However,the ratios of Treg/CD4+ T cells[(1.09±0.62) vs (3.32±2.30),t=4.55,P=0.000 1],Treg/total lymphocytes[(0.42±0.24) vs (1.31±1.14),t=3.67,P=0.001 3]and Treg/Th17[(0.56±0.41) vs (2.51±2.38),t=3.89,P=0.000 8]in the URSA miscarriage again group were significantly lower whereas the ratios of Th17/CD4+ T cells[(1.85±0.92) vs (0.93±0.36),t=5.40,P<0.001]and Th17/total lymphocytes[(0.64±0.31) vs (0.31±0.14),t=5.52,P<0.001]were significantly higher.Similarly,There were no difference between the URSA re-miscarriage group and normal successful delivery group in the CD4+ T cell counts[(1 570.16±519.56) vs (1 566.86±651.36),t=0.03,P=0.98]and total lymphocytes[(4 497.11±975.48) vs (4 720.91±1 572.92),t=0.78,P=0.44].However,the ratios of Treg/CD4+ T cells[(1.09±0.62) vs (3.17±1.81),t=7.16,P<0.001],Treg/total lymphocytes[(0.42±0.24) vs (1.03±0.51),t=7.08,P<0.001]and Treg/Th17[(0.56±0.41) vs (1.87±1.68),t=4.98,P<0.001]in the URSA re-miscarriage group were significantly lower whereas the ratios of Th17/CD4+ T cells[(1.85±0.92) vs (1.12±0.50),t=4.29,P<0.001]and Th17/total lymphocytes[(0.64±0.31) vs (0.36±0.15),t=5.01,P<0.001]were significantly higher.Conclusions Treg and Th17 cell counts in the peripheral blood of patients with URSA might be useful in predicting their pregnancy outcomes.The decrease of Treg cell counts and the increase of Th17 cell counts might imply another abortion.
6.To assess the value of dynamic contrast-enhanced MRI for diagnosis and difteretial diagonis of prostatic cancer
Hao SHI ; Guangying ZHANG ; Zhenzhen YANG ; Hongyu DING
Chinese Journal of Geriatrics 2001;0(03):-
Objective To assess the role of dynamic contrast-enhanced MRI for diagnosis and differential diagnosis of prostatic cancer. Methods Six volunteers, 32 patients with benign prostatic hyperplasia and 13 patients with biopsy-proven prostatic cancer underwent MR imaging. Dynamic MR with Gd-DTPA (gadolinium-diethylene triamine pentaacetic acid) bolus enhancement was performed followed by post-contrast T 1-weighed imaging. The signal intensive value in dynamic MRI was measured and calculated to draw the time-signal intensity curve of normal peripheral zone, prostatic cancer and benign hyperplasia. Results In dynamic MRI, the normal peripheral zone were enhanced mildly and slowly. The lesion enhancement of benign prostatic hyperplasia in 32 patients were obvious in early phase (60 s) and strengthened gradually, and then went to decrease in late phase (240 s) after peak value. The lesions in 9 of 13 cases with prostate cancer were enhanced obviously in early phase (60 s) and washed out rapidly in late phase, and the peak value was located on early phase. Conclusions In dynamic MRI, the enhancement of normal peripheral zone, prostate cancer and benign hyperplasia were different significantly. Dynamic MRI was very useful in the diagnosis and differentiation of prostate cance.
7.Role of stress in depression insomnia and sleep characteristics of commonly used animal stress models.
Yiying LI ; Zhenzhen HU ; Zhili HUANG ; Surong YANG
Acta Pharmaceutica Sinica 2012;47(1):1-6
Depression and insomnia are intimately related. Depressed patients usually manifest sleep discontinuity and early awakening, reduced or no slow wave sleep (SWS) and shortened latency of rapid eye movement (REM) sleep. These sleep abnormalities are very similar to those caused by over activated hypothalamic-pituitary-adrenal (HPA) axis with stress. Therefore, the animal models developed by post-traumatic stress disorder or chronic unpredictable mild stress could be used to evaluate drugs which have effects of both anti-depression and improvement of sleep quality, and to provide a more reliable platform for further studis on the mechanisms of depression and accompanied insomnia. This review mainly focuses on the typical features of sleep disturbance of depression, possible pathophysiological mechanisms, establishment of animal stress models and analysis of their abnormal sleep characteristics.
8.Preparation of rivastigmine liposome and its pharmacokinetics in rats after intranasal administration.
Zhenzhen YANG ; Zhanzhang WANG ; Kai WU ; Xianrong QI
Acta Pharmaceutica Sinica 2011;46(7):859-63
To prepare rivastigmine liposome, rivastigmine was loaded into liposome via ammonium sulfate gradient method. Its pharmacokinetic profile in rats was evaluated after intranasal administration. The size, zeta potential, entrapped efficiency and release of rivastigmine from the liposome in vitro were determined. Plasma concentration of rivastigmine was determined by high performance liquid chromatography-tandem mass spectrometry (HPLC/MS) using antipyrine as internal standard. The pharmacokinetic parameters were calculated by DAS 2.0. The entrapped efficiency of rivastigmine liposome was (33.41 +/- 6.58) %, with the mean diameter of 154-236 nm and zeta potential of (-10.47 +/- 2.41) mV. The release behavior of rivastigmine was fitting the first order equation in vitro. The pharmacokinetic studies indicated that the C(max), T(max) and AUC(0-infinity), of rivastigmine liposome were (1.50 +/- 0.15) mg x L(-1), 15 min and (89.06 +/- 8.30) mg x L(-') x min, respectively. Rivastimine liposome was absorbed rapidly, and could reach a certain concentration in rat plasma after intranasal delivery.
9.Influence of thoracic duct ligation on lipid metabolism after esophagectomy
Yongheng ZHANG ; Bo YANG ; Zhenzhen YUAN ; Quan CHEN
Chinese Journal of General Practitioners 2009;8(12):880-883
Objective To explore influence of thoracic duct ligation on lipid metabolism after esophagectomy. Methods Seventy-four patients with esophageal cancer received esophagectomy were divided into two groups by their thoracic duct ligation, 39 in ligation group and 35 in non-ligation group. All the patients were fed with nutrients through nasal-duodenal tube placed during operation from the 1 st day to the 8th day after surgery, and started taking liquid diet on the 6th day. Blood specimens were collected from the patients on the 1st day after admission, the 9th day, one month and three months after surgery,respectively for biochemical analysis,including determinations of total cholesterol(TC),triglyeeride(TG),high-density lipoprotein-cholesterol ( HDL-C) and low-density lipoprotein-cholesterol ( LDL-C) . Databetween the two groups were compared with statistical analysis. Results No significant difference in plasma levels of TC, TG and HDI.-C was found between the two groups at varied time points. Plasma level of LDL-C in the ligation group significantly decreased on the 9th day after surgery, as compared with that in the nonligation group ( P < 0. 05), and went down to the lowest level one month after surgery. Conclusions Chylomicron was blocked to enter blood stream and production of LDL-C decreased by thoracic duct ligation,which affect lipid absorption and metabolism leading to poor early nutrition in patients with esophagealsurgery due to slower establishment of collateral circulation.
10.The analysis of heparin lithium interference in turbidimetric method to detect total protein
Quanneng ZHAO ; Zhenzhen YANG ; Zhengyu WAN ; Duofu LI
International Journal of Laboratory Medicine 2016;(3):364-366
Objective To confirm the interference effect of heparin lithium on turbidimetry method for detecting total protein , and to conduct performance evaluation of it .Methods Eight different concentrations of total protein urine specimen with and with ‐out heparin lithium were detected respectively ,to confirm the interference of heparin lithium on the experiment .Adding different concentration of heparin lithium solution to the prepared total protein samples with concentration of 0 .172 ,0 .427 g/L(a series of interference experiment samples ,with heparin lithium concentrations of 0 .000 ,0 .025 ,0 .030 ,0 .035 ,0 .040 ,0 .045 ,0 .050 mg/L ) , repeat four times detection ,and then conduct the dose‐effect experiment of interference .Results The biggest bias of the testing re‐sults in the two paired samples was 159 .37% ,the mini‐bias was 11 .37% ,the difference of the results in two groups was statistical significant(t= 17 .24 ,P< 0 .05) .95% confidence interval of the interference effect in the total protein samples with concentration of 0 .172 g/L was 0 .034 ~ 0 .062 ,while in the total protein samples with concentration of 0 .427 g/L was 0 .043 - 0 .053 .When the heparin lithium were 0 .025 mg/mL and 0 .050 mg/mL respectively ,the results of bias of the total protein samples with concentra‐tion of 0 .172 g/L were 27 .33% ,58 .14% respectively .But in the 0 .427 g/L total protein samples ,the results of bias were 11 .24% 、18 .74% respectively .Dose effect of interference both showed a linear relationship in the series concentration of the hepa ‐rin lithium and interference of sample of 0 .172 g/L and 0 .427 g/L ,and the linear equations were Y = 1 .974X - 0 .001 03 ,Y = 1 .599 X - 0 .000 5 respectively .Conclusion Heparin lithium is the exogenous interfering substance to the detection of total protein in tur ‐bidimetry method ,it is the positive interference to the determination results of total proteins ,especially for the low level of total pro‐tein detection ,and as heparin lithium concentration increases ,the stronger the interference effect .