1.In vitro study on fracture resistance of teeth restored with direct and indirect composite resin
Yaming CHEN ; Hailan FENG ; Yazhou SUN
Journal of Practical Stomatology 2000;0(05):-
0.05).Significant difference was found between group ④ and ①,②,③ or ⑤(P
2.Hypoglycemic effect of chromium-enriched compound acidophilous milk in rats with hyperglycemia
Ying LIU ; Baoquan JIANG ; Hailan SUN
Parenteral & Enteral Nutrition 1997;0(02):-
Objective: To study the hypoglycemic effects of chromium-enriched compound acidophilous milk in rats with hyperglycemia. Methods: 120 adult Wister rats were randomly divided into Control group, DM group, therapy group and protective therapy group. Each group were fed a basic diet and Control group were intragastric administration with sodium chloride,DM group and therapy group were intragastric administration with ordinary acidophilous milk and protective therapy group were intragastric administration with chromium-enriched compound acidophilous milk. After 15 days, the rats of DM group, therapy group and protective therapy group were given a single shot of alloxan (50 mg per 1 kg), while Control group was given a single shot of sodium chloride (50 mg per 1 kg). After the diabetic model had been induced by alloxan,the rats of therapy group were intragastric administration with chromium-enriched compound acidophilous milk, and other groups had no change. The blood-fasting sugar, sugar tolerance, and glycosylated hemoglobin were examined. Results: When compared with protective therapy group, the differences of blood-fasting sugar of DM group and therapy group were significant (P
3.Advance of the improvement effect of dietary fiber on intestinal motility disorders
Ting CHEN ; Hongxia XU ; Hailan SUN
Parenteral & Enteral Nutrition 2017;24(2):122-126
Intestinal motility disorders,one of the common complications of critically ill patients,can be caused by a variety of diseases.It was reported that intestinal motility disorders could be improved by modulating the micro-ecological environment in the distal digestive cavity and by reducing the bacterial toxins,and thereby it provides a new reference strategy for the treatment of intestinal motility disorders.Dictary fiber has physiological functions such as accelerating colonic transition,regulating the intestinal microflora and protecting the intestinal mucosal barrier.Clinically,dietary fiber is used as an adjuvant therapy of intestinal motility disorders widely in critical illness,inflammatory bowel disease and diabetes.In order to explore the relationship between the application of dietary fiber and the improvement of intestinal motility disorders,we retrieved the Chinese and English databases and summarized sone recent literatures for providing new ideas for the prevention and treatment of intestinal motility disorders.
4.Content Determination of Sodium Danshensu inBawei Qidan Capsule by HPLC
Hailan WU ; Xiaoshen SUN ; Mei MENG ; Jing ZHANG ; Ying JIANG
Chinese Journal of Information on Traditional Chinese Medicine 2015;(1):95-97
Objective To establish an HPLC method for the content determination of sodium Danshensu inBawei Qidan Capsule.Methods HPLC was applied and the determination was performed on Shim-pack CLC-ODS C18 column (250 mm×4.6 mm, 5μm) with methanol-water- acetic acid (7∶92∶1, V/V/V) solution at a flow rate of 1.0 mL/min and detection wavelength at 281 nm. The column temperature was 30℃, and injection volume was 10μL.Results Through methodological study, the linear range of sodium Danshensu was 0.494 4-4.944μg (r=0.9996), the average recovery was 97.20%, RSD=1.13%.Conclusion The HPLC method for the content determination of sodium Danshensu inBawei QidanCapsule was user-friendly, accurate and reliable, with good repeatability and stability, which can be used for quality control ofBawei Qidan Capsule.
5.Studies of Anti- Human Papillomavirus Activity of Herba Arnebia
Huiyan FU ; Yuanhui DENG ; Yi FENG ; Jing SUN ; Dan ZHOU ; Hailan WANG
Traditional Chinese Drug Research & Clinical Pharmacology 1993;0(04):-
Objective To select the herba anti- human papillomavirus (HPV) active fraction from herba Arnebia. Methods The fractions from herba Arnebia. were separated with systematic solvents including petroleum arieal part of benzin, n- butanol , ethanol and distilled water, and their effects on HPV- DNA were evaluated by fluorescence quantitative polymerase chain reaction (FQ- PCR) technique. Results Only the water- extract of.this drug showed in- vitro inhibitory effect on HPV- DNA and its minimum effective concentration is 0.08g/mL. Conclusion Herba Arnebia. has in- vitro inhibitory effect on HPV- DNA and the active components exists in the water- extract.
6.Precision of digital impressions with TRIOS under simulated intraoral impression taking conditions
Xin YANG ; Yifei SUN ; Lei TIAN ; Wenjie SI ; Hailan FENG ; Yihong LIU
Journal of Peking University(Health Sciences) 2015;(1):85-89
Objective:To evaluate the precision of digital impressions taken under simulated clinical impression taking conditions with TRIOS and to compare with the precision of extraoral digitalizations . Methods:Six #14 -#17 epoxy resin dentitions with extracted #16 tooth preparations embedded were made.For each artificial dentition , ( 1 ) a silicone rubber impression was taken with individual tray , poured with type IV plaster ,and digitalized with 3Shape D700 model scanner for 10 times;(2) fastened to a dental simulator , 10 digital impressions for each were taken with 3Shape TRIOS intraoral scanner .To assess the precision , best-fit algorithm and 3 D comparison were conducted between repeated scan models pairwise by Geomagic Qualify 12.0, exported as averaged errors (AE) and color-coded diagrams.Non-parametric analysis was performed to compare the precisions of digital impressions and model images .The color-coded diagrams were used to show the deviations distributions .Results:The mean of AE for digital impressions was 7.058 281 μm, which was greater than that of 4.092 363 μm for the model images (P<0.05).However, the means and medians of AE for digital impressions were no more than 10 μm, which meant that the consistency between the digital impressions was good .The deviations distribution was uniform in the model images ,while nonuniform in the digital impressions with greater deviations lay mainly around the shoulders and interproximal surfaces .Conclusion:Digital impressions with TRIOS are of good precision and up to the clinical standard .Shoulders and interproximal surfaces scanning are more difficult.
7.A Wnt10a-Notch signaling axis controls Hertwig's epithelial root sheath cell behaviors during root furcation patterning
Sun KAI ; Yu MIAO ; Wang JIAYU ; Zhao HU ; Liu HAOCHEN ; Feng HAILAN ; Liu YANG ; Han DONG
International Journal of Oral Science 2024;16(3):425-435
Human with bi-allelic WNT10A mutations and epithelial Wnt10a knockout mice present enlarged pulp chamber and apical displacement of the root furcation of multi-rooted teeth,known as taurodontism;thus,indicating the critical role of Wnt10a in tooth root morphogenesis.However,the endogenous mechanism by which epithelial Wnt10a regulates Hertwig's epithelial root sheath(HERS)cellular behaviors and contributes to root furcation patterning remains unclear.In this study,we found that HERS in the presumptive root furcating region failed to elongate at an appropriate horizontal level in K14-Cre;Wnt10afl/flmice from post-natal day 0.5(PN0.5)to PN4.5.EdU assays and immunofluorescent staining of cyclin D1 revealed significantly decreased proliferation activity of inner enamel epithelial(IEE)cells of HERS in K14-Cre;Wnt10afl/flmice at PN2.5 and PN3.5.Immunofluorescent staining of E-Cadherin and acetyl-α-Tubulin demonstrated that the IEE cells of HERS tended to divide perpendicularly to the horizontal plane,which impaired the horizontal extension of HERS in the presumptive root furcating region of K14-Cre;Wnt10afl/flmice.RNA-seq and immunofluorescence showed that the expressions of Jag1 and Notch2 were downregulated in IEE cells of HERS in K14-Cre;Wnt10afl/fl mice.Furthermore,after activation of Notch signaling in K14-Cre;Wnt10afl/flmolars by Notch2 adenovirus and kidney capsule grafts,the root furcation defect was partially rescued.Taken together,our study demonstrates that an epithelial Wnt10a-Notch signaling axis is crucial for modulating HERS cell proper proliferation and horizontal-oriented division during tooth root furcation morphogenesis.
8.The pregnancy outcomes in women with gestational diabetes mellitus in one-day outpatient management with or without nutrition specialist involvement: a propensity score matching study
Ying ZHONG ; Feng ZHOU ; Qi SONG ; Lu XIONG ; Xianli WANG ; Qiao HUANG ; Hailan SUN
Chinese Journal of Clinical Nutrition 2021;29(6):350-355
Objective:Objective To explore the special role of nutrition specialists in the one-day-care clinic of gestational diabetes mellitus (GDM), and provide a basis for strengthening the standardized construction of one-day-care clinic.Methods:It was a retrospective observation study that the pregnant women who participated in the one-day-care clinic of GDM in our hospital without nutrition specialists in November and December 2017 were divided into control group (177 cases), and who participated in the one-day-care clinic of GDM in our hospital with nutrition specialists in January and February 2018 were divided into observation group (307 cases). The differences of pregnancy outcomes between the two groups were compared after the propensity score matching.Results:176 pairs of patients were successfully matched with a 1:1 propensity score. The incidence of macrosomia in pregnant women with GDM in the observation group (2.8%) was significantly lower than that in the control group (8.5%) ( P=0.036). There were no significant differences in the weight gain during pregnancy, the gestational week of delivery and the incidences of insulin use, hypertension during pregnancy, preeclampsia, cesarean section, premature infants, premature rupture of membranes, umbilical cord around the neck, and fetal distress between the two groups ( P>0.05). Conclusion:Nutrition specialists are indispensable in the multidisciplinary cooperation of one-day-care clinic of GDM, and they play a key role in considerably lowering the prevalence of macrosomia in GDM pregnant women.
9.Community health survey analysis of Chongqing urban district primary and secondary school teachers
Xie XIAO ; Peihong ZHONG ; Xin LIN ; Hailan SUN ; Jing GUO ; Jian YANG ; Hongxia XU ; Baoquan JIANG
Chongqing Medicine 2017;46(26):3682-3684
Objective To study the prevalence situation of chronic diseases among teachers from some middle and primary schools in Chongqing City.Methods The physical examination data of 6969 teachers in 52 middle and primary schools in a district of Chongqing major city were collected.The survey data of overweight,obesity,hyperlipidemia,osteoporosis,fatty liver and hyperuricemia were statistically analyzed.Results The total morbidity rates of overweight,obesity,hyperlipidemia,osteoporosis,fatty liver and hyperuricemia were 31.3 %,7.5 %,35.1%,34.7 %,22.4 % and 22.2 % respectively.The incidence rates of above diseases had difference among the age periods of ≤44 year old,>44 <60 years old and ≥60 year old (P<0.05).The incidence rate was significantly increased with age increase (P<0.05).The incidence rate of osteoporosis in females was higher than that in males(P< 0.01);while the incidence rate of fatty liver and hyperuricemia in males were higher that in females (P<0.01).Conclusion The incidence of chronic diseases among teachers in middle and primary schools is worth attention.Therefore it is necessary to carry out the health education aiming at the teacher population characteristics,strengthen their heath management and behavior intervention for increasing their health level.
10. Effect of 1,2-dichloroethane-induced apoptosis on the expression of P53,BCL-2 and BAX proteins in SH-SY5Y cells
Si LI ; Hongling LI ; Na ZHAO ; Xiangrong SONG ; Haozhong LIU ; Longyuan JIANG ; Jiabin CHEN ; Hailan WANG
China Occupational Medicine 2017;44(02):164-175
OBJECTIVE: To explore the effect of 1,2-dichloroethane(1,2-DCE) induced apoptosis on the expression of related proteins in human neuroblastoma cells(SH-SY5 Y cells). METHODS: SH-SY5 Y cells were cultured in complete medium with 1,2-DCE at final concentrations of 0,10,20,30,40,50,60,70 and 80 mmol/L. After being cultured for24 hours,the apoptosis of SH-SY5 Y cells was tested by flow cytometry using annexin Ⅴ-fluorescein isothiocyanate and propidium iodide. Western blot was used to detect the protein expression of P53,B cell lymphoma/leukmia-2(BCL-2)and BCL-2 associated X protein(BAX). RESULTS: At 1,2-DCE concentrations of 0-80 mmol/L,the total apoptosis rate of SH-SY5 Y cells increased with 1,2-DCE concentrations in a dose-dependent manner(P < 0. 01). At 1,2-DCE concentrations of 30-80 mmol/L,the early apoptosis rate and total apoptosis rate of SH-SY5 Y cells increased significantly than the control group(P < 0. 05). Compared with the other groups,the protein expression of P53 was the lowest when the1,2-DCE concentration was 20 mmol/L(P < 0. 05),and the protein expression of BCL-2 and the BCL-2/BAX ratio were the lowest when the 1,2-DCE concentration was 70 mmol/L(P < 0. 05). There is no dose-response relationship in the1,2-DCE concentrations and the protein expression levels of P53,BCL-2 and BAX,and BCL-2/BAX ratio. Linear multiple regression analysis revealed that the total apoptosis rate of SH-SY5 Y cells treated with 1,2-DCE was associated with the protein expression of P53 and BCL-2,and BCL-2/BAX ratio(P < 0. 05). CONCLUSION: 1,2-DCE could inhibit the apoptosis of SH-SY5 Y cells. The mechanisms may be related to the changes of P53 and BCL-2 protein expression,and BCL-2/BAX relative amount.