3.Effects of the synthetic peptide coatings inhibiting the growth of Streptococcus gordonii on titanium surface
Qing MA ; Xi ZHANG ; Xu ZHANG ; Yingchun SUN ; Ping GAO
Tianjin Medical Journal 2016;44(6):708-711,653
Objective To detect the independently designed synthetic peptide adsorbed to the titanium surface and its inhibitory effect on streptococcus gordonii, and to provide a new means for antibiosis reseach on oral implants. Methods The physical and chemical properties of the synthetic peptide and antimicrobial peptide were measured by ExPASy Prot?Param tool, ProtScale analysis, circular dichroism and Zeta potential instrument. The synthetic peptide was anchored on the surface of the titanium specimen through incubation at room temperature. The adsorption of the synthetic peptide to the titani?um surface was examined by X-ray photoelectron spectroscopy (XPS) and the atomic force microscope (AFM). The inhibitory effect on streptococcus gordonii of the synthetic peptide fixed on the titanium surface was viewed by confocal laser scanning microscopy (CLSM). The destructive effects of the synthetic peptide and the antimicrobial peptide on streptococcus gordonii were observed through the transmission electron microscope (TEM). Results The independently designed synthetic peptide still had the physical and chemical properties that the antimicrobial peptide desired. The synthetic peptide had already been detected on the titanium surface after incubated in a 5 g/L synthetic peptide solution. The titanium specimen fixed with the synthetic peptide inhibited the survival and adhesion of streptococcus gordonii. Conclusion It suggests that the indepen?dently designed synthetic peptide might have reached the goal of bacterial inhibition on the titanium surface.
4.Trends of demographic and primary disease in new end-stage renal disease dialysis patients of Zhejiang province from 2008 to 2013
Xuxia SHAO ; Ping ZHANG ; Xi YAO ; Li ZHANG ; Jianghua CHEN
Chinese Journal of Nephrology 2016;32(2):106-109
Objective To analyze the changes of primary disease and demography of patients with end-stage renal disease (ESRD) who started dialysis between 2008 and 2013 in Zhejiang province, in order to provide statistical support for the improvement of dialysis quality.Methods The study retrospectively reviewed all the incident ESRD patients on dialysis registered in Zhejiang Dialysis Quality Control Center from 2008 to 2013.Their demographics and primary cause were investigated.Stratified analysis based on dialysis modality, duration and age were conducted.Results A total of 26 310 incident ESRD patients who started dialysis between 2008 and 2013 in Zhejiang were selected, among which 14 886 cases were male and 11 424 cases were female (male: female: 1.30: 1).The study gave priority to patients aged 45 and above (73.9%), with an average age of (55.7± 16.1) years.The top primary disease was chronic glomerulonephritis (51.3%), followed by diabetic nephropathy (17.3%) and hypertensive nephrosclerosis (6.4%).From 2008 to 2013, the incidence of dialysis was 46.3, 60.1, 71.2, 85.8, 104.1, and 119.9 per million population respectively.The average age of patients was increased year by year, from 52.4, 53.3, 54.8, 56.0, 56.9, to 57.6 years.The share of peritoneal dialysis, as well as the promotion of diabetic nephropathy in primary disease was on the rise.With the increase of age, the proportion of primary diseases such as diabetic nephropathy and hypertension nephrnsclerosis was increased.Conclusions In Zhejiang province, incident dialysis patients increase annually.More males than females are on dialysis.The average age and proportion of peritoneal dialysis are rising.The leading cause is chronic glomerulonephritis, but the incidence of diabetic nephropathy is on the increase, which requires attention.
7.Obstetrical management of fetal alloimmune thrombocytopenia
Ping LI ; Xi YUAN ; Weishe ZHANG ; Yanhua ZHAO
Chinese Journal of Perinatal Medicine 2021;24(1):65-70
Fetal alloimmune thrombocytopenia (FAIT) is a severe perinatal complication, which can seriously affect fetal development, and may even lead to intrauterine hemorrhage and intrauterine death. There are controversies in the clinical diagnosis and treatment of the disease due to its low incidence and limited treatment experience. This paper reviews the progress to date in understanding the condition, incidence, screening of high-risk factors, prenatal and delivery management of FAIT based on domestic and foreign guidelines, in order to help obstetricians in the clinical management of FAIT.
8.Improved RP-HPLC method for determination of ferulic acid concentration in human serum
Jingqun HUANG ; Xi HUANG ; Li ZHANG ; Rui XU ; Ping REN
Chinese Traditional and Herbal Drugs 1994;0(09):-
Object To develop an improved RP-HPLC method for determining ferulic acid in the human serum. Methods The determination was carried on RP-HPLC, using Kromasil-C 18column, methanol-water-acetic acid (36.4∶63∶0.6) as mobile phase with a flow rate of 1.0 mL/min and at the detection wavelength of 322 nm, and p-hydroxybenzaldehyde was used as internal standard. The serum sample was deproteinized with acetonitrile to extract ferulic acid. Results The calibration curve showed good linearity over the range of 9.94-159.04 ng/mL (r=0.992 5). RSD was less than 10% within day and day-to-day, the average recovery was 99.77% and the minimal concentration in serum was 5 ng/mL. Conclusion This method, which is simple, rapid, sensitive, reproducible and low toxic, is appropriate for the quantitative determination of ferulic acid in the human serum.
9.Clinical effect of Danshen injection iontophoresis combined with Lumbrokinase in early retinal vein occlusion patients
Xi-Gang, ZHANG ; Ping, WU ; Ying, TONG ; Yin-Lan, LI
International Eye Science 2015;(1):101-103
Abstract? AlM: To explore the effect of Danshen injection iontophoresis combined with lumbrukinase on early patients with retinal vein occlusion ( RVO ) , and observe the prognosis to provide objective basis for clinical?METHODS: Eighty-two patients ( 117 eyes ) with early RVO were randomly selected in our hospital from January, 2011 to April, 2014, 41 cases (59 eyes) of control group treated with Lumbrokinase. Forty-one cases ( 58 eyes) of the observation group, treated with Danshen injection iontophoresis combined with lumbrokinase. The main indexes were the treatment effect, visual acuity and retinal circulation time.?RESULTS: The total effective rate of the observation group was 85. 4% ( 35/41 ), more than that of control group 68. 3% ( 28/41 ), the difference was statistically significant (P<0. 05). The invalid rate of the observation group was 14. 6% (6/41), lower than that of the control group 31. 7% ( 13/41 ), the difference was statistically significant (P<0. 05). The vision of the observation group 4. 8 ~5. 0 was 53. 7% (22/41), more than that of control group 41. 5% ( 17/41 ), the difference was statistically significant ( P < 0. 05 ). The restore vision of the observation group 4. 3 ~ 4. 7 was 31. 7% (13/41), lower than that of the control group 41. 5% ( 17/41 ), the difference was statistically significant ( P<0. 05 ). After treatment, retinal circulation time of two groups were lower than before treatment, the difference was statistically significant (P<0. 05). After treatment of retinal vein circulation time of the observation group was 8. 15 ± 1. 30s, 9. 70 ± 1. 28s lower than that of the control group, the difference was statistically significant (P<0. 05).?CONCLUSlON: There is better effective on Danshen injection iontophoresis combined with Lumbrokinase for early retinal vein occlusion, and can improve the patient's visual acuity, promote the rehabilitation of patients.
10.Clinical efficacy and safety of bevacizumab combined with TP chemotherapy in platinum recurrent ovarian cancer
Xi CHEN ; Yiming ZHU ; Ping ZHANG ; Tao ZHU
Chinese Journal of Biochemical Pharmaceutics 2017;37(6):366-368
Objective To study the clinical efficacy and safety of bevacizumab combined with TP chemotherapy in platinum recurrent ovarian cancer.Methods34 patients with platinum sensitive recurrent ovarian cancer were seleted as the objects.All patients were treated with bevacizumab plus paclitaxel and cisplatin.The short-term effects, overall survival(OS), progression free survival(PFS) and incidence of adverse reaction during chemotherapy were observed.ResultsThe patients with CR, PR, SD and PD were 3 cases, 24 cases, 5 cases and 2 cases, respectively.The median PFS and median OS of patiens were 12.7months and 26.2 months, respectively.The incidence of decrease in leukocytes, thrombocytopenia, neutrophils, gastrointestinal reactions, elevated levels of transaminase, hypertension, epistaxis, proteinuria, peripheral neuropathy, mucositis were 73.53%, 20.59%, 67.65%, 82.35%, 47.06%, 14.71%, 5.88%, 17.65%, 29.41% and 17.65%, respectively.ConclusionThe bevacizumab combined with TP chemotherapy in treatment of platinum sensitive recurrent ovarian cancer can better relieve the disease, improve the survival time of the patient, the adverse reaction is controllable, and the safety is good, which has the clinical popularization value.