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Abstract Objective Oral ulcers are a lesion in the oral mucosa that impacts chewing or drinking. Epoxyeicosatrienoic Acids (EETs) have enhanced angiogenic, regenerative, anti-inflammatory, and analgesic effects. The present study aims to evaluate the effects of 1-Trifluoromethoxyphenyl-3-(1-Propionylpiperidin-4-yl) Urea (TPPU), a soluble epoxide hydrolase inhibitor for increasing EETs level, on the healing of oral ulcers. Methods The chemically-induced oral ulcers were established in Sprague Dawley rats. The ulcer area was treated with TPPU to evaluate the healing time and pain threshold of ulcers. The expression of angiogenesis and cell proliferation-related protein in the ulcer area was detected using immunohistochemical staining. The effects of TPPU on migration and angiogenesis capability were measured with scratch assay and tube formation. Results Compared with the control group, TPPU promoted wound healing of oral ulcers with a shorter healing time, and raised pain thresholds. Immunohistochemical staining showed that TPPU increased the expression of angiogenesis and cell proliferation-related protein with reduced inflammatory cell infiltration in the ulcer area. TPPU enhanced cell migration and tube-forming potential in vitro. Conclusions The present results support the potential of TPPU with multiple biological effects for the treatment of oral ulcers by targeting soluble epoxide hydrolase.
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OBJECTIVES@#The previously established 38-plex InDel system was optimized and its performance was validated according to the Scientific Working Group on DNA Analysis Method (SWGDAM) application guidelines. The ancestry inference accuracy of individuals from East Asian, European, African and mixed populations was verified.@*METHODS@#DNA standard sample 9947A was used as the template to establish the optimal amplification conditions by adjusting primer balance, Mg2+ final concentration and optimizing PCR thermal cycle parameters and amplification volume. The allelic dropout, nonspecific amplification and whether the origin of the inferred samples matched the known information were compared to evaluate the performance of this system.@*RESULTS@#The optimal dosage of this system was 0.125-2 ng DNA template. The results of InDel typing were accurate, the amplification equilibrium was good, and the species specificity was good. This system showed certain tolerance to DNA samples including the inhibitor such as hemoglobin (≤80 μmol/L), indigo (≤40 mmol/L), calcium ion (≤1.0 mmol/L), and humic acid (≤90 ng/μL). The system enabled the direct amplification of DNA from saliva and blood on filter paper, and the results of ethnic inference were accurate. The system successfully detected the mixed DNA sample from two individuals. The test results of the system for common biological materials in practical cases were accurate.@*CONCLUSIONS@#The results of the 38-plex InDel system are accurate and reliable, and the performance of the system meets the requirement of the SWGDAM guidelines. This system can accurately differentiate the ancestry origins of individuals from African, European, East Asian, and Eurasian populations and can be implemented in forensic practice.
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Humans , Polymorphism, Single Nucleotide , Genotype , Polymerase Chain Reaction , DNA/genetics , DNA Fingerprinting/methods , INDEL Mutation , Genetics, Population , Gene FrequencyABSTRACT
OBJECTIVE@#To establish a deep learning algorithm that can accurately determine three-dimensional facial anatomical landmarks, multi-view stacked hourglass convolutional neural networks (MSH-CNN) and to construct three-dimensional facial midsagittal plane automatically based on MSH-CNN and weighted Procrustes analysis algorithm.@*METHODS@#One hundred subjects with no obvious facial deformity were collected in our oral clinic. Three-dimensional facial data were scanned by three-dimensional facial scanner. Experts annotated twenty-one facial landmarks and midsagittal plane of each data. Eighty three-dimensional facial data were used as training set, to train the MSH-CNN in this study. The overview of MSH-CNN network architecture contained multi-view rendering and training the MSH-CNN network. The three-dimensional facial data were rendered from ninety-six views that were fed to MSH-CNN and the output was one heatmap per landmark. The result of the twenty-one landmarks was accurately placed on the three-dimensional facial data after a three-dimensional view ray voting process. The remaining twenty three-dimensional facial data were used as test set. The trained MSH-CNN automatically determined twenty-one three-dimensional facial anatomical landmarks of each case of data, and calculated the distance between each MSH-CNN landmark and the expert landmark, which was defined as position error. The midsagittal plane of the twenty subjects' could be automatically constructed, using the MSH-CNN and Procrustes analysis algorithm. To evaluate the effect of midsagittal plane by automatic method, the angle between the midsagittal plane constructed by the automatic method and the expert annotated plane was calculated, which was defined as angle error.@*RESULTS@#For twenty subjects with no obvious facial deformity, the average angle error of the midsagittal plane constructed by MSH-CNN and weighted Procrustes analysis algorithm was 0.73°±0.50°, in which the average position error of the twenty-one facial landmarks automatically determined by MSH-CNN was (1.13±0.24) mm, the maximum position error of the orbital area was (1.31±0.54) mm, and the minimum position error of the nasal area was (0.79±0.36) mm.@*CONCLUSION@#This research combines deep learning algorithms and Procrustes analysis algorithms to realize the fully automated construction of the three-dimensional midsagittal plane, which initially achieves the construction effect of clinical experts. The obtained results constituted the basis for the independent intellectual property software development.
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Humans , Algorithms , Deep Learning , Face , Neural Networks, Computer , SoftwareABSTRACT
OBJECTIVE@#A network Meta-analysis of randomized controlled trials (RCT) of 4 commonly used acupuncture therapies (electroacupuncture, fire needling, warming acupuncture and filiform needling) for shoulder hand syndrome (SHS) after stroke was performed.@*METHODS@#The RCTs regarding electroacupuncture, fire needling, warming acupuncture and filiform needling for SHS after stroke before March 10, 2020 were searched in databases of CNKI, Wanfang, VIP, SinoMed, PubMed, EMbase and Cochrane Library. The included literature was screened and evaluated by Cochrane bias risk assessment tool, and the data analysis was performed by RevMan5.3, Gemtc0.14.3 and Stata14.2.@*RESULTS@#A total of 21 RCTs were included, involving 1508 patients, 814 cases in the observation group and 694 cases in the control group. In term of effective rate and visual analogue scale (VAS) score, warming acupuncture, electroacupuncture and fire needling needling were superior to western medication and rehabilitation (@*CONCLUSION@#The curative effect of 4 acupuncture therapies for SHS after stroke is better than the western medication and rehabilitation, and warming acupuncture has the best clinical efficacy.
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Humans , Acupuncture Points , Acupuncture Therapy , Network Meta-Analysis , Reflex Sympathetic Dystrophy , Stroke/therapy , Treatment OutcomeABSTRACT
Objective To discuss the value of MRI for identify dangerous placental placenta.Methods Totally 60 dangerous placental placenta patients hospitalized from May 2014 to July 2017 were selected, who underwent ultrasound and MRI examinations along with 60 patients with non-dangerous placental placenta.SPSS 22.0 software was used for data processing. Results The sensitivity, specificity and accuracy for identifying dangerous and non-dangerous placental placenta were respectively 80.00%,76.67% and 78.33% by ultrasound,86.67%,83.33% and 85.00% by MRI,and 96.67%,95.00% and 95.83% by combined ultrasound and MRI.The sensitivity,specificity and accuracy by combined ultrasound and MRI were significantly higher than those by ultrasound or MRI (P<0.05).Conclusion Ultrasound and MRI can both effectively identify non-dangerous and dangerous placental placenta, and higher-efficiency identification can be gained when ultrasound is combined with MRI. MRI can be a supplementary means when ultrasound is proved to not so satisfactory to identify dangerous placental placenta.
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AIM:To investigate the efficacy and visual sensitivity of occlusion therapy combined training for children with ametropic amblyopia.METHODS:Totally 85 children (85 eyes) with anisometropic amblyopia treated in our hospital from January 2013 to January 2015 were selected.All patients were given occlusion therapy combined training.Statistical analysis of clinical efficacy and visual sensitivity changes were taken,and the changes of visual acuity,AULCSF,S Frmax were analyzed.RESULTS:The visual acuity after therapy was significantly better than that before treatment (1.12±0.29 vs0.45±0.25,P＜0.01);AULCSF,Smax and Frmax all increased,the difference between the two groups was statistically significant (P＜ 0.05).The sensitivity of the same spatial frequency was significantly higher than that before treatment,the difference was statistically significant (P ＜ 0.05),and the contrast sensitivity decreased gradually with the increase of spatial frequency.There were statistical differences in the total effective rate of different refractive degrees after treatment (P=0.001).Mild group and moderate group had no significant difference on the total clinical efficiency difference (x2=3.091,P=0.079);between mild group and severe group total effective rate was significantly different (x2 =11.471,P =0.001);the moderate and severe groups total clinical efficiency were no significantly different (x2 =3.359,P=0.067).In addition,the total efficiency rate of wearing glasses under the age of 6 was significantly higher than that after 6 years old (95％ vs 77％),statistical difference between the two groups was significant (P＜0.05).CONCLUSION:Masking therapy combined with comprehensive training,in the treatment of children with ametropic amblyopia,and wearing a corrective spectacles,is desirable,especially for children under 7 years of age.
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Objective To explore the tobacco control project based health education curriculum reform's effect of improving medical students' tobacco control.Method Choosing the students of two classes of students in preventive medicine specialty of Harbin Medical University as the research object, investigating the students respectively with the questionnaire prepared uniformly by 7 schools before and after the course.All data were coded by Epidata 3.0, and SPSS 18.0 was used to carry out the relevant information for the chi square test and t test.Result The sample size of baseline survey was114 and after the intervention was 87.The knowledge pass rate of the girls before and after the intervention were 87.3％ (48/55) and 98.2％ (54/55) respectively (P=0.000).The boys' awareness rate of the secondhand smoke safety level were 13.6％ (8/59) and 21.9％ (7/32) respectively, and the girls were 13.0％ (7/55) and 31.5％ (17/55) (P=0.021).Students interested in tobacco increased from 79.8％ (91/114) before intervention to 90.8％ (79/87) after intervention (P=0.033).Students willing to work in the tobacco related increased from 52.2％(59/114) before intervention to 66.7％ (58/87)after intervention (P=0.044).The girl who replied after intervention I am not smoking now, but won't smoke either when working in the disease control in the future reached as high as 96.4％ (53/55), but the students were lack of confidence to help people to stop smoking.Conclusion The reform of social practice activity curriculum designed for tobacco control project is effective, and it is urgent to strengthen the training of preventive medical students' smoking cessation skills and enhance their confidence.
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<p><b>OBJECTIVE</b>To evaluate the development and operation on measles surveillance system.</p><p><b>METHODS</b>To formulate surveillance program, and then establish surveillance system on measles in Hainan province before the case surveillance was conducted. Descriptive epidemiological method was used to analyze the measles cases reported through the notifiable diseases epidemic situation report system and measles surveillance system during 2004 - 2008 in Hainan province.</p><p><b>RESULTS</b>From 2004 to 2008, through surveillance system, 3040 suspected measles cases were reported which was 96.00% higher than that from the notifiable diseases epidemic situation report system. When the measles surveillance system was first established in 2004, the number of cases reported by the surveillance system was less than that from the epidemic report system, however, the sensitivity of the surveillance system had been increasing since 2005. In 2008, the number of suspected cases reported by surveillance system was 19.12 times more than from the epidemic report system. The proportion of confirmed cases in the total suspected cases was decreasing annually, from 90.34% to 4.48%, along with the increase of the sample collection rate, from 22.73% to 99.12%. The proportion of laboratory confirmed cases in the total confirmed cases increased from 7.55% to 86.97%. With suspected cases, the IgM antibody positive rate on measles and rubella were 31.57% and 34.52%, respectively. In Hainan, the epidemic pattern of measles had been sporadic, except for 2006 as there occurred several outbreaks in that year. The of disease incidence had an obvious seasonal peaks, from March to June. Measles mainly attacked children under 15 years of age, accounted for 86.68% of the age group. Children with no immunity or unknown immune history accounted for 85.67%.</p><p><b>CONCLUSION</b>The sensitivity of surveillance system had been increasing annually since it was developed and the incidence had been dropping to its lowest level. These achievements had built a solid foundation for the eventual elimination of measles.</p>
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Humans , China , Epidemiology , Disease Outbreaks , Incidence , Measles , Epidemiology , Population SurveillanceABSTRACT
Objective To understand the epidemiological characteristics and the influencing factors of Japanese encephalitis (Abbreviated JE) at different periods in Hainan province, and to provide evidence for JE control strategies. Methods Data on JE had been collected since 1952 and related incidence, mortality, fatality rates of JE and the rate of JE vaccination were calculated for four periods: the natural epidemic period (1952-1978), period for inactivated JE vaccine promotion (1979-1986), national immunization program period (1987-1990) and the promotion of live-attenuated JE vaccine period (1991-2007). History on the immunity of JE and data from the monitoring programs on cases and insect vectors were also analyzed. Results The average annual incidence in natural epidemic period was 7.12/100 000, which was also the highest among the 4 periods with the mortality rate as 0.89/100 000. The average annual incidence was 0.11/100 000 which was the lowest while the mortality rate was 0.01/100 000 in the period when live-attenuated JE vaccination was under promotion. Since the establishment of JE surveillance system was set up in Hainan province in 2002, the specimen collection rate of JE reported suspected cases had reached 92.8%, while the incidence of confirmed JE cases fluctuated between 0.05/100 000 and 0.2/100 000. Of the confirmed cases, 86% did not have clear history of JE vaccination. The annual average protective rate reached 95.69% in 2004-2007. The density of insect vectors was high in Hainan province. The infection rate of JE in host animal swine, kept rising from April to October, and in some surveillance points, the rate reached 99.3%. The density of insect vector plotted in trans-curve with the infection of host animals. Conclusion The application of live-attenuated JE vaccine was found to have had significant protective effect on JE in susceptible children. It helped reducing the incidence and controlling the epidemics of JE. It appears feasible to include live-attenuated JE vaccine into the expanded immunization program.
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Objective To investigate the effects of Thomas solution in combination with nitroglycerine of different concentrations on rat cardiac preservation for 8 h. Methods Thirty Wistar rats were selected,and Langendorff heart perfusion models were established.Rats were randomly divided into Thomas solution group,Thomas solution+4?10-6 mol/L nitroglycerine group and Thomas solution+4?10-5 mol/L nitroglycerine group(n=10).After hypothermic preservation(4 ℃)for 8 h,the cardiac function of each group was determined.Tissues of left ventricular wall were obtained,and changes of myocardial ultrastructure were observed by electron microscopy. Results Compared with Thomas solution group,the cardiac function was significantly improved and the myocardial ultrastructure injury was less severe in Thomas solution+4?10-5 mol/L nitroglycerine group after hypothermic preservation(4 ℃)for 8 h,while there was no significant difference in myocardial ultrastructure injury and cardiac function between Thomas solution group and Thomas solution+4?10-6 mol/L nitroglycerine group. Conclusion Thomas solution in combination with 4?10-5 mol/L nitroglycerine can significantly improve the preservation effects for isolated hearts in rats.
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Objective To study the effects of continuous oxygenated blood microperfusion on rat hearts preservation.Methods Forty-five Wistar rats were randomly divided into 3 groups.The isolated rat hearts were continuously microperfused with oxygenated blood at 4℃in experimental group,those in control group microperfused with St.Thomas solution and those in solution group were preserved with St.Thomas solution.After preservation the hemodynamic indexes of rat hearts were measured using Langendorff system,including the left ventricular end-diastolic pressure (LVEDP),the left ventricular systolic pressure (LVSP),the left ventricular developed pressure (LVDP) and the rate of the left ventricular pressure change (?dp/dt),then the contents of adenosine triphosphate (ATP) were determined by high-performance liquid chromatography and myoeardium ul- trastructures were observed under an electric microscope.Results After 30 min perfusion of Langen- dorff system,the LVSP,LVDP and?dp/dt were (38,25?3.84) mm Hg,(32.54?4.01) mm Hg and (1080?123) mm Hg/s respectively in experimental group;(34.48?4.68) mm Hg,(19.27?4.63) mm Hg and (935?196) mm Hg/s respectively in control group;(32.14?4.95) mm Hg, (16.99?4.85) mm Hg and (825?302) mm Hg/s respectively in solution group.The hemodynamic indexes in experimental group were superior to those in control group and solution group (P