Changes and significance of CDld^(hi)CD5⁺CD19⁺ regulatory B cells in peripheral blood of children with juvenile idiopathic arthritis-associated uveitis / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM: To explore the changes and significance in JIA-U and to detect the levels of CDld^(hi)CD5⁺CD19⁺ regulatory B cells(Breg)in the peripheral blood of children with juvenile idiopathic arthritis-associated uveitis(JIA-U).<p>METHODS: From April 2018 to May 2020, 95 children with JIA-U were selected as JIA-U group; 70 children with juvenile idiopathic arthritis(JIA)were selected as JIA group, and all of them were diagnosed and treated in our hospital; another 75 healthy children in the same period were selected as the control group. The ratio of CDld^(hi)CD5⁺CD19⁺Breg in peripheral blood was detected by flow cytometry; the level of IL-10 in peripheral blood was detected by ELISA; the correlation between CDld^(hi)CD5⁺CD19⁺Breg ratio and the expression of IL-10, the severity of JIA-U patients was analyzed by Pearson correlation coefficient method; the influencing factors of JIA-U were analyzed by Logistic regression. <p>RESULTS: Compared with the control group, the proportion of CDld^(hi)CD5⁺CD19⁺Breg in peripheral blood of children in JIA group and JIA-U group was significantly lower(all <i>P</i><0.01), while the level of IL-10 was significantly higher(all <i>P</i><0.01); compared with JIA group, the proportion of CDld^(hi)CD5⁺CD19^+Breg in JIA-U group was significantly lower(<i>P</i><0.01), while the level of IL-10 was significantly higher(<i>P</i><0.01); compared with the stationary phase, the ratio of CD1d^(hi)CD5⁺CD19⁺Breg in the active phase of JIA and JIA-U patients was significantly reduced(all <i>P</i><0.01), and the IL-10 level was significantly increased(all <i>P</i><0.01); the ratio of CDld^(hi)CD5⁺CD19⁺Breg was negatively correlated with the expression of IL-10 and the severity of JIA-U; multivariate analysis showed that low proportion of CDld^(hi)CD5⁺CD19⁺Breg, less-joint JIA subtype, duration of arthritis < 4a, high levels of IL-10 were risk factors for JIA-U. <p>CONCLUSION: The proportion of CDld^(hi)CD5⁺CD19⁺Breg in peripheral blood of children with JIA-U is significantly decreased, which may be involved in the occurrence and development of JIA-U, and has the potential to be used as an index to judge the severity of JIA-U.

Application of biocopy function of temporary crown occlusal morphology in patients with severe attrition / 北京大学学报(医学版)

OBJECTIVE@#To explore the preliminary application of "biocopy function" in digital technology of temporary crown in severe tooth attrition, so as to reduce the difficulty of final restoration adjustment in severe tooth wear cases, and save clinical time.@*METHODS@#Twelve patients aged between 40 and 65 years with severe tooth attrition were recruited in this study. The experimental group (6 cases, 3 females and 3 males) used the method of digital copy of temporary restoration shape when making the final restoration, and the control group (6 cases, 3 females and 3 males) used the traditional method to make the final restoration. The mean time of central occlusal adjustment and protrusive and lateral occlusal adjustment of each crown, the number of follow-up visits of the patients were recorded and statistically analyzed. The occlusal comfort of the first and the third months after wearing the prosthesis was evaluated by the patients, and the difference of the occlusal comfort of the final prosthesis made by the two methods was compared (the full score was 10 points). The occlusal adjustment time and occlusal comfort score were used as measurement data. Single sample t test was used. The number of follow-up visits was count data. Rank sum test was used for non-normal continuous variables.@*RESULTS@#The mean occlusal time of each crown adjustment in the experimental group was significantly lower than that in the control group (P < 0.01), and the median number of follow-up visits in the experimental group was lower than that in the control group (P < 0.01). The average occlusal comfort score of the experimental group was higher than that of the control group at the first time (P < 0.01). After three months of crown wearing, the median occlusal comfort score of the experimental group was higher than that of the control group (P < 0.05).@*CONCLUSION@#In the case of severe tooth attrition, it is feasible to use the "biocopy function" in the design software to design the final prosthesis, which is conducive to reduce the difficulty of adjustment and achieve predictable functional and aesthetic effects, which is of great significance to save clinical time and improve the accuracy of restoration.

Application and exploration of Smile Lite MDP portable photography system in aesthetic photography of anterior teeth / 北京大学学报(医学版)

OBJECTIVE@#To explore the possibility of the Smile Lite MDP (Smile Lite Mobile Dental Photograph) portable dental photography system applying in anterior teeth aesthetic photography, and to provide the chance to simplify aesthetic photography process and facilitate communication among patients, dentists and dental technitians.@*METHODS@#The Smile Lite MDP photography system combined with the smartphone were used to photograph the front occlusal phase photos of anterior teeth. The photographic conditions including the color temperature parameter, the Smile Lite MDP light position and the intensity settings were explored. The best photographic conditions were chosen by blind evaluation within experienced dentists and technicians through the method of the visual analogue scale/score (VAS) evaluation, which went through statistical analysis to figure out the optimum photograghic conditions. Smile Lite MDP photography system was used to photograph the front occlusal phase photos of anterior teeth under the optimum parameter by different magnifications. The width/height ratio of the central incisor and the front width ratio of the upper anterior teeth in those photos were measured and calculated respectively. The accuracy of the anterior teeth photos taken by Smile Lite MDP photography system was analyzed based on the photographs taken by digital single lens reflex (DSLR) camera.@*RESULTS@#The optimum color temperature parameter of Smile Lite MDP portable camera system was 5 000 K, the optimum magnification was 4 times, the best light position was the side lights of Smile Lite MDP, the optimum intensity of lights was 2 grades. Photos taken by the optimum parameters won the highest score during the VAS evaluation and the result of statistical analysis had significant difference compared with other groups (P<0.05). When comparing the photos of the upper anterior teeth taken by the Smile Lite MDP portable photography system using 4 times magnification or by DSLR using the standard parameters, there was no significant difference neither in the width/hieght ratio of the central incisor nor in the front width ratio of the upper anterior teeth (P>0.05).@*CONCLUSION@#The Smile Lite MDP portable dental photography system applying in anterior teeth aesthetic analysis photography was capable to show the color and shape of anterior teeth in an accurate way by using the right photography parameters. Therefore, Smile Lite MDP portable dental photography system was considered to be a simple and easy photographic tool in clinical work.

Time course of G-CSF, estrogen and various doses of atorvastatin on endothelial progenitor cells mobilization / 中华心血管病杂志

<p><b>OBJECTIVE</b>To evaluate the time course of granulocyte-colony-stimulating-factor (G-CSF), estrogen and various doses of atorvastatin on endothelial progenitor cells (EPCs) mobilization.</p><p><b>METHOD</b>A total of 48 male New Zealand White rabbits were treated with placebo, estrogen (0.25 mg.k(-1).d(-1)), Atorvastatin (2.5, 5, or 10 mg) and G-CSF (50 microg/rabbit/d), respectively. Peripheral EPCs number was surveyed weekly for 4 weeks by FACS analysis (double-positive for PE-CD34/FITC-CD133) and under fluorescent microscope (double-positive for FITC-UEA-1/Dil-acLDL). Serum nitric oxide (NO) and lipids were also measured at the third week.</p><p><b>RESULTS</b>Peripheral EPCs was significantly increased in G-CSF treated animals and remained constant for 4 weeks compared to placebo treated animals. Atorvastatin increased peripheral EPCs dose-dependently from 2.5 to 5 mg and peaked at the third week while peripheral EPCs number was not affected by 10 mg.k(-1).d(-1) atorvastatin during the first 3 weeks and was significantly higher only in the fourth week compared to placebo group. Estrogen also significantly increased peripheral EPCs at the third and fourth week compared to placebo group. At the third week, serum NO was similar in G-CSF group, significantly higher in atorvastatin 5 mg.k(-1).d(-1) and estrogen groups while significantly lower in atorvastatin 10 mg.k(-1).d(-1) group compared to placebo group. Serum lipids were similar among various groups.</p><p><b>CONCLUSION</b>Atorvastatin, estrogen and G-CSF could mobilize EPCs. The mobilization efficacy is as follows: G-CSF > atorvastatin 5 mg.k(-1).d(-1) > estrogen > atorvastatin 2.5 mg.k(-1).d(-1) > atorvastatin 10 mg.k(-1).d(-1). NO might partly contribute to the mobilizing effect of estrogen and atorvastatin.</p>

Effects of granulocyte colony-stimulating factor on peripheral endothelial progenitor cells in cholesterol-fed rabbits / 中华心血管病杂志

<p><b>OBJECTIVE</b>To investigate the effects of granulocyte colony-stimulating factor (G-CSF) on peripheral endothelial progenitor cells (EPC) and atherosclerosis (AS) in cholesterol-fed rabbits.</p><p><b>METHODS</b>Male New Zealand white rabbits were randomly divided into control group, G group (Recombinant Human Granulocyte Colony Stimulating Factor Injection rhG-CSF 50 microg/d), AS group (high cholesterol diet) and G + AS group (rhG-CSF 50 microg/d plus high cholesterol diet, n = 8 per group). Peripheral blood was collected at baseline and at 1, 4, 8 and 12 weeks, total mononuclear cells (MNCs) were isolated from peripheral blood by Ficoll density gradient centrifugation, and then the cells were plated on fibronectin-coated culture dishes. After being cultured for 7 days, EPCs were characterized as adherent cells double positive for DiLDL uptake and lectin binding by direct fluorescent staining under a laser scanning confocal microscope. After being cultured for 3 days, the number of EPC (PE-CD34/FITC-CD133 double-stained positive cells) was quantified by flow cytometric analysis. Serum NO was measured and aortic plaque area analyzed at 12 weeks.</p><p><b>RESULTS</b>EPC number was low in control and AS groups and EPC number was significantly increased ( approximately 13-fold, P < 0.001) compared to baseline at 1 week in G and G + AS groups and remained at this level throughout the study period in G group while decreased gradually in G + AS group and returned to baseline level at 12 weeks. Aortic atherosclerotic plaque was visible in both AS and G + AS groups, however, the aortic atherosclerotic plaque area was smaller in G + AS group than that of in As group (59.8 mm(2) +/- 26.9 mm(2) vs. 251.5 mm(2) +/- 83.4 mm(2), P < 0.01). Serum NO was similar between AS and G + AS groups and significantly higher than that in control and G groups.</p><p><b>CONCLUSION</b>CSF could attenuate atherosclerosis in cholesterol-fed rabbits by increasing circulating EPC.</p>