1.Chest Wall Approach Endoscopic Total Thyroidectomy:a Report of 20 Cases
Xin ZHOU ; Siyu ZHANG ; Guoqiang SU
Chinese Journal of Minimally Invasive Surgery 2014;(8):735-737
Objective-To-explore-the-feasibility-and-safety-of-endoscopic-total-thyroidectomy-via-chest-wall-approach-.-Methods-Endoscopic-total-thyroidectomy-via-chest-wall-approach-was-performed-in-20-patients-with-nodular-goiter-from-January-2008-to-December-2012.Subcutaneous-operative-space-was-created-through-an-unilateral-areola-incision-,-through-which-laparoscope-and-surgical-instruments-were-introduced-.The-neck-suture-suspension-technique-was-used-to-reveal-the-thyroid-gland-.By-using-an-ultrasonic-scalpel-,-the-thyroid-was-separated-and-removed-completely-.-Results-All-the-operations-were-successfully-completed-without-conversions-to-open-surgery-.The-operation-time-was-90-180-min-(mean,-120-min).The-blood-loss-was-15-40-ml-(mean,-20-ml).The-postoperative-hospital-stay-ranged-from-4-to-7-days-(mean,-5.8-days).There-was-1-case-of-temporary-hoarseness.No-severe-hemorrhage-,-wound-infection-,-or-subcutaneous-effusion-was-found-.-Conclusion-Endoscopic-total-thyroidectomy-via-chest-wall-approach-is-a-safe-and-feasible-procedure-.
2.Absorption and distribution characteristics of terbinafine hydrochloride nanoemulsions in cornea after instillation
Tianyang, ZHOU ; Huiyun, XIA ; Jijun, HE ; Susu, LIU ; Siyu, HE ; Junjie, ZHANG
Chinese Journal of Experimental Ophthalmology 2015;33(10):910-914
Background Nanoemulsions (NEs) is one of the most popular ophthalmic colloidal drug delivery system due to its long-term stability, low toxicity and irritancy, considerable capacity for solubilization of lipophilic drug molecules and great potential in bioavailability improvement.The cornea pathway is the main route of intraocular absorption after topical use of NEs.Though NEs possess numerous physiological and physicochemical advantages,the use of NEs cannot always obtain satisfactory results.Objective This study was to investigate the impacts of epithelium and stroma on the corneal permeation of topical ophthalmic terbinafine hydrochloride nanoemulsions (TH-NEs).Methods TH-NEs was prepared by the self-emulsification method.The size and Zeta potential of the oil droplets in the formulation were analyzed using a dynamic light-scattering particle size analyzer.The high performance liquid chromatography (HPLC) was used for the in vitro release study.Sixty New Zealand albino rabbits were randomly divided into intact cornea group and cornea epithelium debrided group.The cornea epithelium of the left eyes was debrided in the cornea epithelium debrided group.The TH-NEs were instilled into the lower conjunctival sac of left eyes.Six rabbits were executed from each group 15,30,60,120 and 240 minutes after dosing,respectively.The corneas were collected and analyzed by HPLC.The fluorescein diacetate (FDA) was used to label the TH-NEs.Two C57BL/6 mice with left cornea epithelium debrided and 2 normal mice were used for the fluorescence tracing study.The fluorescence distribution of FDA labeled TH-NEs was observed by a two-photon laser confocal scanning microscope 30 minutes and 60 minutes after single instillation.Results The average size and Zeta potential of the oil droplets were 51.37 nm and-0.232 7 mV respectively,and 0.482% of encapsulated drugs was released from the TH-NEs after 12 hours.The peak concentrations of TH in the intact cornea and epithelium debrided cornea were (17.85 ± 2.79) μg/g and (4.40± 1.75) μg/g respectively, which occurred 15 minutes postdose.The drug concentrations in the intact cornea were significantly higher than that in the debrided cornea 15,30,60 and 120 minutes after dosing, with significant differences between them (t =9.998,8.658,6.903,7.576;all at P=0.000).The fluorescence was observed in the cornea epithelium when the cornea was intact.The fluorescence intensity in the superior layer of corneal epithelium was obviously higher than that in the deep layers of corneal epithelium 30 minutes and 60 minutes after dosing.No fluorescence was observed in the cornea stroma of both eyes.Conclusions The cornea epithelium is the main of absorption and distribution position of TH-NEs.The cornea stroma is the dominating permeation barrier for the intraocular transportation of the TH-NEs.The cornea stroma may stop the permeation of TH-NEs by molecular exclusion mechanism.
3.Renchangianin E: a new dibenzocyclooctadiene lignan from Kadsura renchangiana.
Shuang LIU ; Youping LUO ; Yijie HU ; Liqing DENG ; Siyu ZHOU ; Zhihua LIAO ; Daofeng CHEN ; Min CHEN
Acta Pharmaceutica Sinica 2014;49(10):1438-41
A new dibenzocyclooctadiene lignan, renchangianin E (1) was isolated from the stems of Kadsura renchangiana. Its structure and stereochemistry were elucidated by spectroscopic methods, including 2D-NMR techniques.
4.Function and mechanism of action of the PD-1/PD-L1 pathway in liver diseases
Siyu PAN ; Zhixin WANG ; Ying ZHOU
Journal of Clinical Hepatology 2019;35(3):672-676
Programmed death-1 (PD-1) is an important immunosuppressive molecule which interacts with its ligand programmed death-ligand 1 (PD-L1) and plays an important role in central/peripheral immune tolerance, transplantation immunity, tumor immune escape, and autoimmune disease. At present, there is still no systematic understanding of the role of the PD-1/PD-L1 pathway in the development and progression of liver diseases. This article summarizes related studies on the role of the PD-1/PD-L1 pathway in the progression of liver diseases and reviews the immunoregulatory function of the PD-1/PD-L1 pathway and its role in liver diseases. It is pointed out that the PD-1/PD-L1 pathway is involved in immunoregulatory function of the liver and plays an important role in the development and progression of liver inflammation, autoimmune liver diseases, viral liver diseases, tumor immune escape, transplantation rejection reaction, induced immune response, and autoimmune tolerance. Intervention of the PD-1/PD-L1 pathway may provide new strategies and directions for the prevention and treatment of liver disease.
5.Seroprevalence of Toxoplasma gondii in cats in mainland China 2016–2020:a meta-analysis
Siyu ZHOU ; Ziyin SANG ; Lijun WANG ; Tangjie ZHANG
Journal of Veterinary Science 2022;23(1):e13-
Background:
Toxoplasma gondii can infect humans and most animals and has a very high infection rate worldwide, including in China. The number of people infected with T. gondii in China increases with the number of cats.
Objectives:
We investigated the seropositive rate of T. gondii in cats over the last five years and analyzed the risk factors via meta-analysis.
Methods:
We retrieved 20 studies, with a total of 5,158 cats, published between 2016 and 2020, used the DerSimonian-Laird model and calculated seroprevalence estimates with the variance stabilizing double arcsine transformation.
Results:
The overall seroprevalence rate after sinusoidal conversion was 19.9% (95% confidence interval [CI], 15.9–23.9; 966/5,158), lower than the domestic report from 1995to 2015 (24.5%, 95% CI, 20.1–29.0). There was substantial heterogeneity among studies (χ2 = 262.32; p < 0.001; I2 = 64.6%). Regression analysis of possible heterogeneous causes and subgroup analysis showed that age and whether cats were stray or not have a significant effect on the seropositive rate.
Conclusions
Articles published in recent five years suggest that the seroprevalence estimates of Toxoplasma gondii in cats has decreased. Cats, as the final host of T. gondii, are an important cause of the spread of the parasite, and this is an important concern for public health.
6.Effects of parental locus of control and mental health on test anxiety of middle school students
Min NI ; Yueji SUN ; Zhongqin ZHOU ; Ya ZHENG ; Siyu ZHOU ; Jun WU ; Na LI ; Huijuan SHEN ; Yan SONG ; Chengqing ZHU ; Tengda MA
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(1):67-69
Objective To find out parental locus of control and mental health affecting students test anxiety. Methods The samples were from 5 middle schools including 1000 students,and their parents. They were investigated with the general life scales, Sarason's test anxiety scale, Symptom checklist 90 (SCL-90)and Parenting Locus of Control Scale(PLOC). Results The ratio of test anxiety: the mild was 28.8%, moderate was 45.0%, severe was 26.2% ,and felt anxiety was 55.8%. Ratio of test anxiety was higher in the boy students (X2=9.284, P =0.010) ,and heavier(F:16.42±6.70; M:15.18 ±6.51, t=2.716, P=0.007). Student test anxiety was significantly positively correlated with their parental mental health (r fatherl~11=0.166~0.272, Pfather l~11= 0.000;r mother 1~11=0.182~0.242, P mother 1~11= 0.000); Student test anxiety positively correlated with the effectiveness cof parents education, father's belief on the fate, eontrol of fathers for their children, locus of control from fathers (r1~5=0.075~0.143; P1-5=0.000~0.030);felt anxiety positively correlated with self-expect ,pressure from their mothers,over take care attitude from their parents,self-pressure from their parents( r1~6=0.068~0.230; P1-6=0.000~0.050) ,and negatively correlated with respect attitude of parents for their child, Marital relations,Communication time between the students and their parents,attitude of mother for learning( r1-7=-0.074~-0.140;P1~7=0.000~0.034). Felting test anxiety was served as a dependent factor, some factors enter the regression equation,and they were somatization of father, psychotic mother, the pressure from parents, mother over expectations, self-expectations ,the child control from student's father by Logistic regression analysis ( OR1~16=0.675~3.029;P1-6=0.000~0.007). Conclusion Students test anxiety is a common problem in male and female students. Mental health and locus of control from students' parents show test anxiety has somatization of father, psychotic mother, the pressure from parents, mother' expectations,self-expectations, the control of father for the child 6 risk factors.
7.Effects of compound whole grain-soybean on insulin resistance and serum adipocytokines in impared fasting glucose population.
Shufen HAN ; Hong ZHANG ; Jing CHI ; Yaqi LIU ; Siyu ZHOU ; Chengkai ZHAI
Chinese Journal of Preventive Medicine 2014;48(1):23-27
OBJECTIVETo evaluate the effects of compound whole grain-soybean on insulin resistance and serum adipocytokines levels in impared fasting glucose population.
METHODSAccording to inclusion and exclusion criteria, 163 cases of impared fasting glucose (IFG) Chinese Han population from the age of 40 to 75 years old, were screened from 12 community health centers of three main districts of Nanjing city by the multi-stage cluster and simple randomization method from March to September, 2008. The IFG subjects were randomly divided into the intervention group (87 individuals) and control group (76 individuals) by quasi-experimental design. The intervention group was provided with compound whole grain-soybean and health education, while only health education was provided for the control group. Body mass index (BMI), waist-to-hip ratio (WHR), lipid profiles, fasting blood glucose (FBG), fasting insulin (FINS) and homeostasis model assessment of insulin resistance (HOMA-IR), adipocytokines including leptin, lipocalin 2 (LCN-2) and adiponectin (ADP) levels were measured before and after the half a year intervention period. Chi square test was used to analyze the distribution differences. Two-sample t-test was used to compare the differences of the two groups before and after the half a year intervention period, and paired t-test was used to compare the differences between before and after intervention in the intervention group or control group. Wilcoxon rank sum test was used to compare the differences of all indexes between after and before dietary intervention.
RESULTSAfter dietary intervention for half a year on the IFG population, BMI ((24.87 ± 3.69) kg/m(2)), FBG((6.27 ± 0.24) mmol/L), FINS((7.14 ± 1.05) mU/L) , HOMA-IR (1.99 ± 0.31), leptin ((13.07 ± 2.22) µg /L), LCN-2 ((67.42 ± 18.20) µg/L) of intervention group were decreased significantly compared to the levels of BMI ((25.16 ± 4.07) kg/m(2)), FBG((6.40 ± 0.28) mmol/L), FINS ((7.32 ± 1.54) mU/L), HOMA-IR (2.08 ± 0.45), leptin ((13.43 ± 2.52) µg/L), LCN-2((74.87 ± 17.81) µg/L) before dietary intervention, t values were 4.48, 7.08, 2.05, 3.39, 3.28 and 6.36, respectively, and all P values were < 0.05, while ADP ((5.07 ± 1.51) mg/L) of intervention group after dietary intervention was increased significantly compared to the level of ADP ((4.92 ± 1.53) mg/L) before dietary intervention, t = -2.47 and P < 0.05. The medians (P25, P 75) of differences after and before dietary intervention in the intervention group were BMI (-0.25(-0.68, 0.02) kg/m(2)), FBG (-0.08 (-0.20, 0.00) mmol/L), FINS (-0.15(-0.32, 0.00) mU/L), HOMA-IR (-0.07(-0.12, -0.03)), leptin (-0.36(-0.77, 0.12) µg/L), LCN-2 (-5.85(-14.29, -0.71) µg/L) and ADP (0.15(-0.13, 0.36) mg/L), and the medians of differences of after and before dietary intervention in the control group were BMI (0.00(-0.23, 0.29) kg/m(2)), FBG (0.00(-0.03, 0.04) mmol/L), FINS (-0.01(-0.13, 0.04) mU/L), HOMA-IR (-0.01(-0.05, 0.02)), leptin (-0.07 (-0.57, 0.46) µg/L), LCN-2 (-0.85(-5.39, 1.63) µg/L) and ADP (0.02(-0.19, 0.13) mg/L). There were significantly statistical differences between them (Z values were -3.65, -4.88, -3.08, -5.23, -2.16, -4.43 and 3.05, all P values were <0.05).
CONCLUSIONDietary intervention of compound whole grain-soybean can improves glucose level, increase insulin sensitivity and ameliorate insulin resistance state of IFG population.
Adipokines ; blood ; Adiponectin ; blood ; Aged ; Apolipoproteins ; blood ; Blood Glucose ; metabolism ; Female ; Humans ; Insulin ; blood ; Insulin Resistance ; Male ; Middle Aged ; Soybeans ; Waist-Hip Ratio
8.Study on clonal expression of T cells bearing dominant TCR Vβ in non-small-cell lung cancers.
Xinxi ZHOU ; Jintian LI ; Yilong WU ; Siyu WANG ; Xuening YANG ; Shiping CHEN
Chinese Journal of Lung Cancer 2003;6(2):107-110
BACKGROUNDTo investigate the distribution of TCR Vβ subfamily T clonal cells in peripheral blood lymphocytes (PBL), tumor infiltrating lymphocytes (TIL) and lymphocytes in non-cancerous lung tissues of patients with non-small-cell lung cancer (NSCLC) and to see the inclination of the T cell antigen receptor (TCR) Vβ subfamilies' expression.
METHODSComplimentarily determining region 3 (CDR3) of TCR 24 variable region genes was analyzed in PBL, TIL and lymphocytes in non cancerous lung tissues from 24 NSCLC cases with reverse transcriptase-polymerase chain reaction (RT-PCR) and gene scan techniques to identify the distribution and clonality of TCR Vβ subfamily T cells.
RESULTSOnly a portion of Vβ T cells were found in patients with NSCLC, whereas 24 TCR Vβ subfamily T cells were detected in 10 healthy controls. Vβ5 subfamily was expressed mostly in TIL and the frequency of Vβ5 in TIL (6/18, 33.3%) was much higher than that of PBL (1/24, 4.2%) and T cells infiltrating non-cancerous lung tissues (0/12) (P < 0.05). Oligoc lonal T cells were found in 2 cases with Vβ5 subfamily and polyclonal T cells in 4 cases.
CONCLUSIONSThere are dominant and clonal TCR Vβ subfamilies expressed in TIL of NSCLC patients, which may be the tumor associated antigens (TAA) specific.
9.Potential implications of ketone body metabolism changes and ketogenic therapy in the treatment of heart failure.
Qiong WANG ; Siyu YAN ; Shuyu KUANG ; Mengmeng ZHOU ; Chunling JIANG
Chinese Critical Care Medicine 2023;35(7):769-772
Heart failure (HF) has become a major challenge in the treatment of global cardiovascular diseases. Great progress has been made in the drug treatment of HF, however, rehospitalization rate and mortality of patients with HF are still high. Hence, there is an urgent need to explore new treatment strategy and new underlying pathogenic mechanisms. In recent years, some researchers have suggested that regulation of ketone body metabolism may become a potentially promising therapeutic approach for HF. Some studies showed that the oxidative utilization of fatty acids and glucose was decreased in the failing heart, accompanied by the increase of ketone body oxidative metabolism. The enhancement of ketone body metabolism in HF is a compensatory change during HF. The failing heart preferentially uses ketone body oxidation to provide energy, which helps to improve the body's cardiac function. This review will discuss the potential significance of ketone body metabolism in the treatment of HF from three aspects: normal myocardial ketone body metabolism, the change of ketone body metabolism in HF, the effect of ketogenic therapy on HF and its treatment.
Humans
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Heart Failure/metabolism*
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Myocardium/metabolism*
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Ketone Bodies/metabolism*
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Cardiovascular Diseases
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Fatty Acids/metabolism*
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Energy Metabolism
10. Osteogenic potential of the Schneiderian membrane and its factors
Jize YU ; Yiping LIU ; Huixin LYU ; Siyu CHEN ; Liuyi DU ; Yao WANG ; Yanmin ZHOU
Chinese Journal of Stomatology 2019;54(3):209-213
Insufficient bone quantity in the posterior region of the maxilla is one of the difficulties for dental implant placement. Maxillary sinus augmentation is considered to be a reliable treatment to solve the problem of insufficient bone quantity. With the increase of researches on maxillary sinus elevation, the debate over osteogenesis potential of Schneiderian membrane is getting more attention. Therefore, this article will review the current research on osteogenic potential of the Schneiderian membrane and its influence factors.