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Objective:To explore the status and influencing factors of physical activity, sedentary behavior in middle-aged and elderly patients with stable coronary heart disease, and to provide reference for clinical medical staff to formulate targeted intervention measures.Methods:This was a cross-sectional survey. From March to June 2022, a convenience sampling was used to select 378 middle-aged and elderly patients with stable coronary heart disease in the ward and clinic of Department of Cardiology, Jinshan Hospital, Fudan University. The general information questionnaire, the International Physical Activity Questionnaire, the Adult Sedentary Behavior Questionnaire, the Tampa Scale for Kinesiophobia Heart, the Self-efficacy for Chronic Disease Scale and the Social Support Rating Scale were used for investigation.Results:The total metabolic equivalent of physical activity and sedentary time in middle-aged and elderly patients with stable coronary heart disease were 31.40 (21.73, 49.67) MET-h/w and 8(7, 9) h/d respectively. The 39.7% (150/378) patients reached physical activity guidelines recommendations and 61.4% (232/378) patients had a sedentary time ≥ 8 h/d. The 19.0% (72/378) patients were identified as physically active/low sedentary group, 20.6% (78/378) patients were identified as physically active/high sedentary group, 19.6% (74/378) patients were in physically inactive/low sedentary group and 40.7% (154/378) patients were in physically inactive/high sedentary group. The stepwise multiple regression analysis showed that sedentary behavior, working status, kinesiophobia, objective support and disease duration had significant impacts on physical activity ( t values were -9.81-2.67, all P<0.05). The influencing factors of sedentary behavior were physical activity, objective support, support utilization, gender, educational level and kinesiophobia ( t values were -10.77-4.63, all P<0.05). Conclusions:The status of physical activity, sedentary behavior in middle-aged and elderly patients with stable coronary heart disease is not good. Medical staff should intervene corresponding influencing factors to reduce the risk of physical inactivity and high sedentary behavior in this group.
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Objective To investigate the food radioactivity levels in areas around the Xudabao nuclear plant before operation. Methods The food radioactivity levels were achieved by detecting samples collected within 30 km around the Xudabao nuclear power plant with a HPGe detector. Results The major radionuclides in food were 238U, 226Ra, 232Th, 40K and the man-made radionuclide of 137Cs. The average activity levels of natural 238U、226Ra、232Th、40K were(1.2 × 10−11 ± 2.6 × 10−11)、(9.2 × 10−12 ± 1.6 × 10−11)、(3.6 × 10−11 ± 6.5 × 10−12)、(9.0 × 101 ± 5.8 × 101)Bq/kg respectively. The average level of 137Cs in food was (1.2 × 10−12 ± 9.0 × 10−13)Bq/kg. Conclusion The man-made radionuclides were not detected except 137Cs in the collected food. The radioactivity concentrations were lower than the national standards. The effective dose for local residents by ingestion of 137Cs was around 6.0 × 10−12 µSv/a.
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Objective:To evaluate the impacts of radioactivity in foods since begining of the operation of the Hongyanhe Nuclear Power Plant (HNPP).Methods:The levels of radioactivity in foods collected within 30 km of HNPP from 2013 to 2020 were analyzed by comparison of the control samples and those collected before the operation. The impacts on the operation of the HNPP on foods were evaluated.Results:The man-made radionuclides such as 131I, 134Cs, 60Co, 58Co, 110Ag m were not found in food samples. The nautral radionuclides such as 238U, 226Ra, 232Th, 40K were at the normal levels, with the average levels of (0.088±0.053), (0.155±0.178), (0.314±0.388)and(81.3±18.1)Bq/kg(fresh weight)in foods, respectively. The average levels of man-made nuclide 137Cs in foods were (0.013±0.010) Bq/kg (fresh weight). There was no increase in radionuclide levels compared with the control samples and the samples before the operation. Conclusions:The impacts on foods due to the operation of HNPP was not found.
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Objective To observe the changes and significance of the protein expression levels of nuclear factor-κB p65 (NF-κB p65), transforming long factor-β1 (TGF-β1) and apoptosis-related factors Bcl-2 and Bax in myocardial tissue of Bama miniature pig model of diabetic cardiomyopathy (DCM). Methods Ten healthy male Guangxi Bama miniature pigs, aged 4 to 5 months old, were selected and divided into control group and model group according to the random number table method, with 5 pigs in each group. After 12 hours of fasting in the two groups, the DCM model was replicated by intravenous injection of streptozotocin (STZ) 150 mg/kg; for the Bama miniature pigs in the control group, citric acid-sodium citrate buffer 150 mg/kg was injected intravenously. After 10 months of modeling, the basic conditions of the two groups of animals were observed and their fasting blood glucose (FPG) levels were detected. The protein expression levels of NF-κB p65, TGF-β1, Bcl-2 and Bax in myocardial tissue of two groups were detected by Western Blot and the pathological changes of myocardial tissue were observed under electron microscope. Results In the model group, 4 models were successfully established, and 1 died. The model pigs had symptoms such as polydipsia, polyphagia, polyuria and decreased body weight. The FPG level in the model group was significantly higher than that in the control group (mmol/L: 25.53±3.75 vs. 4.68±0.77, P < 0.01). Compared with the control group, the protein expression levels of NF-κB p65, Bax and TGF-β1 in the myocardial tissue of model group were significantly increased (NF-κB p65/GAPDH: 0.46±0.05 vs. 0.38±0.02, Bax/GAPDH: 0.46±0.01 vs. 0.35±0.01, TGF-β1/GAPDH: 0.39±0.01 vs. 0.33±0.01, all P < 0.05) and the expression level of Bcl-2 protein was significantly decreased (Bcl-2/GAPDH: 0.33±0.01 vs. 0.42±0.01, P < 0.01). Electron microscopy results showed that the myofibrils of myocardial tissue in the DCM model group were disordered, and the number of mitochondria in the gap was significantly reduced. A large number of mitochondria with vacuolar degeneration were observed. Conclusions The DCM model of Bama miniature pigs can be successfully replicated after 10 months of high-dose STZ disposable ear vein injection. The DCM model miniature pigs have obvious glucose metabolism disorder, and their myocardial tissue has inflammatory reaction, cardiomyocyte apoptosis and fibrosis.
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Objective To construct a prediction model for the risk of ischemic stroke (IS) by classification tree model, and evaluate its application value. Methods By cluster sampling, 858 IS patients with perfect clinical data from January to December 2017 in the Affiliated Hospital of Guilin Medical College (IS group) were enrolled, and 844 health checkups matched with the gender and age of IS patients in the same period were enrolled as controls (healthy control group). The metabolic characteristics of the two groups were compared and analyzed. The classification tree model was used to construct the prediction model of the risk of IS, and the gain diagram, index chart, risk value of misclassification probability and receiver operating characteristic curve (ROC) were used to evaluate the application value of the model. Results Compared with the healthy control group, body mass index (BMI), fasting blood glucose (FPG), triglyceride (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) in IS group were significantly increased [BMI (kg/m2): 25.34±3.70 vs. 24.24±3.10, FPG (mmol/L): 6.79±2.89 vs. 5.73±1.17, TG (mmol/L):1.62±1.06 vs. 1.44±1.06, TC (mmol/L): 4.70±2.73 vs. 4.35±0.79, LDL-C (mmol/L): 3.18±0.94 vs. 2.73±0.73, all P < 0.01], high density lipoprotein cholesterol (HDL-C) was significantly decreased (mmol/L: 1.12±0.33 vs. 1.35±0.36, P < 0.01), and the proportion of hypertension, smoking and drinking were significantly increased (69.0% vs. 41.9%, 23.1% vs. 16.8%, 19.2% vs. 13.4%, all P < 0.01). By assigning values to each factor [IS: No = 0,Yes = 1; BMI: < 24.0 kg/m2=0, ≥ 24.0 kg/m2= 1; FPG : < 7.0 mmol/L = 0, ≥7.0 mmol/L = 1; TG: < 2.26 mmol/L = 0, ≥2.26 mmol/L = 1; TC: <6.22 mmol/L = 0, ≥6.22 mmol/L = 1; LDL-C: < 4.14 mmol/L = 0, ≥4.14 mmol/L = 1; HDL-C: < 1.04 mmol/L = 0, ≥1.04 mmol/L = 1; hypertension: No = 0,Yes = 1; smoking: No = 0,Yes = 1; drinking: No = 0,Yes = 1], a classification tree model was established to analyze the risk factors of IS. The classification tree model consisted of 4 layers and 17 nodes: the first layer was hypertension, the second layer was FPG and HDL-C, the third layer was HDL-C and FPG, and the fourth layer was LDL-C and smoking. There were five explanatory variables screened out in the model, including hypertension, FPG, HDL-C, LDL-C and smoking. The first layer of the tree showed that the incidence of IS in hypertensive population (62.6%) was significantly higher than that in non-hypertensive population (35.2%). The second layer of the tree showed that the incidence of IS in people with hypertension with HDL-C≥1.04 mmol/L (53.6%) was lower than that in people with HDL-C < 1.04 mmol/L (78.5%). However, in the population without hypertension, the probability of IS occurrence in the population with FPG ≥ 7.0 mmol/L (71.1%) was significantly higher than that in the population with FPG < 7.0 mmol/L (28.3%). The third layer of the tree showed that the IS incidence of HDL-C ≥1.04 mmol/L (21.8%) was lower than that of HDL-C < 1.04 mmol/L (48.7%) in the population without hypertension and FPG < 7.0 mmol/L. However, in the population with hypertension and HDL-C ≥ 1.04 mmol/L, the probability of IS occurrence in the population with FPG ≥ 7.0 mmol/L (78.6%) was significantly higher than that in the population with FPG < 7.0 mmol/L (46.7%). The fourth layer of the tree showed that the IS incidence of people with LDL-C ≥4.14 mmol/L (53.8%) was higher than that of people with LDL-C < 4.14 mmol/L (19.0%) in the population without hypertension, FPG < 7.0 mmol/L and HDL-C ≥ 1.04 mmol/L. In the population without hypertension, the incidence of IS in smokers (76.9%) was higher than that in non-smokers (39.1%) of people with FPG < 7.0 mmol/L and HDL-C <1.04 mmol/L. In the population with hypertension, the probability of IS occurrence in the population with LDL-C ≥4.14 mmol/L (72.5%) was higher than that in the population with LDL-C < 4.14 mmol/L (44.4 %) of people with HDL-C ≥ 1.04 mmol/L and FPG < 7.0 mmol/L. The gain diagram of IS classification tree model shown that the gain value increased rapidly from 0% to 100% and then tended to be stable. The index chart shown that the index value kept stable in the moving direction from above 100% and then dropped rapidly to 100%, indicating the model was very well. The risk value of misclassification probability of the classification tree model was 0.291, and the correct rate of risk factor for IS patients was 70.90%. The area under ROC curve (AUC) was 78.0% [95% confidence interval (95%CI) =75.9%-79.9%, P < 0.001], the sensitivity was 62.5% (95%CI = 59.1%-65.7%) and the specificity was 79.4% (95%CI =76.5%-82.1%). Conclusion Classification tree model can properly predict the risk factor of IS, and the most important risk factors are hypertension, hyperglycemia, high LDL-C and smoking.
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Objective To observe the expressing changes of apolipoprotein M (ApoM),tumor necrosis factor-α(TNF-α) and monocyte chemoattractant protein-1 (MCP-1) in human retinal vascular endothelial cells (HRECs) under the high glucose culture condition and investigate the inhibitory effects of ApoM overepression on the expressions of TNF-α and MCP-1.Methods HRECs were cultured in DMEM containing 10％ fetal bovine serum and 5.5 mmol/L D-glucose and assigned to 6 groups.The cells in the normal control group were cultured in above culture medium;the cells in the high glucose group were treated using the DMEM with 30 mmol/L D-glucose;ApoM was transfected into the cells using lentiviral vector in the ApoM transfected group;lentiviral vector without ApoM sequence was transfected in the empty vector group;the cells transfected by empty vector were cultured in high glucose culture medium in the empty vector+high glucose group;the cells in the ApoM transfection+high glucose group were treated by ApoM sequence transfection and high glucose incubation.The relative expression of ApoM,TNF-α and MCP-1 mRNA was detected using real-time quantitative PCR,and the relative expression of ApoM protein was evaluated using Western blot assay.Results Compared with the normal control group,the mRNA expression levels of ApoM,TNF-α and MCP-1 in the high glucose group were significantly increased (t=5.517,3.295,2.555;all P＜0.05).HRECs grew well after infected with lentivirus.The relative expression level of ApoM mRNA in the ApoM transfected group was 236.400±39.270,which was significantly higher than 1.000±0.153 in the empty vector group (t=5.995,P＜0.01).An enhanced protein band of ApoM was seen in the ApoM transfected group,and the protein band was absent in the empty vector group.The relative expression band in the ApoM transfected group was 1.000± 0.249 and 2.978 ± 0.285 in the cells cultured with normal culture medium or high glucose culture medium,respectively,with a significant difference between them (t =5.056,P＜0.01).The relative expressions of TNF-α and MCP-1 in the mRNA levels were significantly different among the empty vector group,empty vector+high glucose group,ApoM transfected group and ApoM transfection + high glucose group (F =5.966,P =0.026;F =14.410,P =0.002).Compared with the empty vector+high glucose group,the relative expressions of TNF-α and MCP-1 mRNA were considerably reduced in the ApoM transfection+high glucose group (P=0.017,0.004).Conclusions High glucose environment up-regulates the expression of ApoM,MCP-1 and TNF-α in HRECs.Overexpression of ApoM inhibits the up-regulation of MCP-1 and TNF-α expression induced by high glucose.
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19 cases with vertical alveolar bone resoption wer examined by CBCT and treated by orthodentic therapy, the changes of alveolar ridge height, bone defect and bone mineral density were analysed. After treatment, the defect area of alveolar bone was decreased(P＜ 0. 05), the density of defect area of alveolar bone was increased(P＜ 0. 05). CBCT plays an important role in the evaluation of vertical alveolar bone absorption and reconstruction treated by orthodontic therapy.
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Objective To investigate CTGF changes in the expression of the gum tissue before and after orthodontic treatment, and to preliminarily explore the modification mechanism of gingival tissue and the effectiveness of the intervention measures. Methods 72 male Sprague-Dawley rats of 12-week-old, weight about 250 g-300 g, randomly divided into 6 groups: blank control group (A), healthy teeth orthodontic group (B), low functional group (C), low occlusal function teeth orthodontic group (D), combined intervention group (E), bite orthodontic intervention group (F). The results of the study were compared at 1 w, 2 w, 4 w, 6 w.Results (1) HE staining results showed the atrophy of the gingival tissue, which suggested that occlusal hypofunction SD rats model were successfully established. (2) Fluorescence quantitative results of CTGF in gingival tissue: 6 w: group B was higher than group D and group F (P＜0.05). Conclusion (1) the expression of CTGF in the low occlusion group was lower than that of the normal control group with time, and the gum tissue was vulnerable to atrophy. (2) It remains to be further studied whether the bite force recovery is effective.
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Objective To establish a dual real-time fluorescence quantitative polymerase chain reaction (dual real-time PCR) assay to detect human vitamin D receptor (VDR) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH). Methods GAPDH gene was used as the internal control. The specific primers and TaqMan probes were designed by Primer Premier 5.0 software, which were applied to detect the VDR/GAPDH mRNA levels. The obtained PCR products were puri-fied to construct the VDR/GAPDH recombinant plasmid, which was taken as the standard to analyze the sensitivity and re-peatability of the method. Results The amplification products were confirmed as the specific fragment of VDR/GAPDH by DNA sequencing instrument. The results showed that the sensitivity, linear range, the determinate coefficient, the amplifica-tion efficiency, the intra-assay and inter-assay coefficient of variation were 40 copies/μL, 4.00 × 101-4.00 × 105 copies/μL, 0.998, 96.10%, 0.09%-1.21%, 0.17%-0.51%for VDR, and 40 copies/μL, 4.00 × 101-4.00 × 105 copies/μL, 0.999, 85.15%, 0.35%-0.88%, 0.51%-2.46% for GAPDH, respectively. Conclusion These results demonstrate that the dual real-time PCR assay with high sensitivity and specificity can detect the relative expressions of human VDR by single reaction tube, which can effectively shorten the time and reduce the experimental error.
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Objective To develop a duplex fluorescence RT-PCR assay for detection of scavenger receptor class B, typeⅠ(SRBⅠ) knockout mice. Methods Primers and probes were designed according to knockout region of SRBⅠgene and related substituted sequence. DNA samples were extracted from tails of mice and performed amplification using real-time PCR. SRBⅠgenotypes of mice were analyzed according to amplification curves of FAM and CY5 channels. Finally, the sensitivity of the method was detected and the accuracy was verified by the direct sequencing. Results The homozygous SRBⅠwild genotype showed an amplification curve only in FAM channel. When the homozygous SRBⅠknockout genotype was present, the typical S amplification curve appeared only in the CY5 channel. Heterozygous genotype showed two typical S amplification curves in both FAM and CY5 channels, respectively. The results showed that the sensitivity reached 4×101 copies/μL, and there was complete concordance between this method and direct DNA sequencing. Conclusion The new method is simple, rapid and accurate, which is suitable for genotyping SRBⅠknockout mice.
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Objective To investigate the environmental impact of the Japanese Fukushima No.1 nuclear power plant accident on radiation levels in some areas of Liaoning province.Methods The emergent monitoring was performed by detecting atmosphere aerosols,precipitations,drinking water,vegetables,milk and seafood by gamma spectrometry analysis and gross activity measurements.Results The fission radionuclides of 131I,134Cs and 137Cs were detected in atmosphere aerosols 20 d after nuclear accident.The rad ionuclides of 131I,134Cs and 137Cs were found existing in atmosphere for 25,4 and 6 d,respectively,with the highest concentrations of 4.6 × 10 3,2.9 × 10-4 and 4.2 × 10-4 Bq/m3,respectively.The man-made fission radionuclides could not be detected in vegetablcs,drinking water and milk from Shenyang city and seafood from Dandong city.Conclusions The atmosphere might be slightly contaminated in Liaoning province due to the nuclear accident,whereas the vegetables,milk and drinking water not contaminated.
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<p><b>OBJECTIVE</b>To analyze the effects on the morphology of temporomandibular joint (TMJ) of the adult with the low angle Class II malocclusions before and after orthodontic treatment comparatively. To provide the references for the orthodontic treatment of the adults.</p><p><b>METHODS</b>19 adult patients with low angle Class II malocclusions were chosen and treated with Damon self-ligating braces. The examinations of 16-slice spiral CT were taken before and after the orthodontic treatment. The parameters of skeletal morphology of TMJ were measured in the multiplanar reconstruction (MPR) images. The results were analysed statistically.</p><p><b>RESULTS</b>The rate of condyles in a center position in the glenoid fossa after the treatment was 52.6%(20/38), and the rate of retrodisplacement was 31.6% (12/38). The position of the condyles before and after the orthodontic treatment had significant differences (P<0.05, chi2=4.41, chi2=5.32). The mean value of the anterior oblique angle of condyle decreased by 2.32 degrees +/- 1.78 degrees after treatment, meanwhile the average height of the condylar head increased by (1.07 +/- 0.29) mm. There were significant differences in both results before and after treatment (P<0.05).</p><p><b>CONCLUSION</b>The orthodontic treatment can make the TMJ structures stable and beneficial to relieve the symptoms by moving the condyle forward, increasing the height and reconstructing the anterior oblique angle of condyle on adult patients with low angle Class II malocclusions.</p>
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Adult , Humans , Malocclusion, Angle Class II , Mandibular Condyle , Orthodontics , Temporomandibular Joint , Tomography, X-Ray ComputedABSTRACT
Objective To study local people's habits and customs concerning the prevention of dental fluorosis in an indoor coal-combustion-type fluorosis area of Zhaotong city Yunnan province, and to provide reference value for monitoring and control of the disease. Methods In 2008, 600 people of a 12-year-old group (400 people) and a 35 - 44-year-old group(200 people) were examined for dental fluorosis and oral health status in an indoor coal-combustion-type fluorosis area of Zhaotong. A questionnaire survey of 120 students and 60 adults was carried out on their habits and customs, stove changing status, knowledge of prevention of dental fluorosis, social psychology status, oral health behavior and their need for medical treatment. Results The total prevalence of dental fluorosis was 91.0% (546/600), dental fluorosis index was 2.58. The total prevalence of dental fluorosis of 12-year-old group was 86.5%(346/400), and dental fluorosis index was 2.12. The total prevalence of dental fluorosis of rural student was 90.5% (181/200), which was obviously higher in the rural group than the urban group [82.5% (165/200), χ2 = 5.48, P < 0.05]. The total prevalence of dental fluorosis of 35-44-year-old group was 100% (200/200), which was obviously higher than that of the 12-year-old group(χ2 = 29.67, P < 0.01). The rates of using coal, baking of food, changing stoves were 66.7% (60/90), 14.4% (13/90),57.8% (52/90), respectively, and these values of the urban were much lower than those of the rural[95.6%(86/90) ,31.1%(28/90) ,76.7%(69/90),χ2 = 24.51,7.11,7.29, all P < 0.01]. Only 23.3% (42/180) of people surveied had the knowledge of prevention of dental fluorosis, and the rate in the adult group[56.7% (34/60)]was higher than that of the student group [6.7% (8/120), χ2 = 55.9, P < 0.01]. The same rate in the urban student group was 0(0/60), and the rural student group was 13.3%(8/60), there was a significant difference between them(χ2 = 5.66, P < 0.05). Seventy-three point nine per cent( 133/180) of these people thought dental fluorosis had significant effect on their life, 91.1%(164/180) of these 'people wished to be treated. Eighty-four point four per cent( 152/180) of the people had a habit of toothbrushing,and 50.7% (77/152) of these people were still using toothpaste containing fluorine. Conclusions Zhaotong is a serious indoor coal-combustion-type fluorosis area. Enhancing health education to local people especially to students, and changing people's unhealthy habits and customs are keies to control the prevalence of indoor coal-combustion-type dental fluorosis.
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<p><b>OBJECTIVE</b>To evaluate the craniofacial characteristics of the Class II malocclusion patients with mouth-breating by posteroanterior cephalometry.</p><p><b>METHODS</b>To measure craniofacial width of the 12 Class II malocclusion patients with mouth-breathing, and to compared these measures with corresponding measures in a group of normal children.</p><p><b>RESULTS</b>The width of the maxillary base bone (J-J) was less than that in normal children significantly (P < 0.01). The mouth-breathing children's upper and lower arch width (at first molar and cuspid) were comparatively narrower, and lateronasal width (Lap-Lap) was narrower too.</p><p><b>CONCLUSION</b>Mouth breathing may lead to craniofacial morphological abnormal development in craniofacial transverse structures.</p>
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Adolescent , Child , Humans , Male , Cephalometry , Cuspid , Dental Arch , Face , Malocclusion , Malocclusion, Angle Class II , Maxilla , MolarABSTRACT
<p><b>OBJECTIVE</b>The aim of this study was to observe the effects of Tip-Edge Differential Straight-Arch Technique in treating Angle II (1) malocclusion.</p><p><b>METHODS</b>13 adults with Angle II (1) malocclusion were treated with Tip-Edge appliance. The results of cephalometric measurements before and after treatment were statistically analyzed.</p><p><b>RESULTS</b>The average treatment time was 16.2 months. The results of cephalometric measurement showed that UIC-AP decreased by 3.72 mm (P < 0.01), LIC-AP decreased by 1.03 mm (P < 0.01), LIC-MP decreased by 1.59 mm (P < 0.01), L6-MP increased by 0.99 mm (P <0.05), the over jet decreased by 3.73 mm (P < 0.01).</p><p><b>CONCLUSION</b>Tip-Edge appliance can effectively change the dento-alveolar position by means of the differential mechanics.</p>
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Adolescent , Adult , Female , Humans , Male , Cephalometry , Malocclusion, Angle Class II , Therapeutics , Orthodontic Appliance Design , Orthodontic Appliances , Orthodontic Brackets , Orthodontic Wires , Tooth Movement Techniques , MethodsABSTRACT
Objective:To study the structural changes of upper airway i n the patients with Angle Ⅱ 1 malocclusion treated by orthodontic appliance. Methods:12 patients with Angle Ⅱ 1 malocclusion caused by mout h breathing were treated by rapid maxillary expansion (RME) of splint and Tip-E dge technology, the structure of upper airway was measured before and after trea tment,the data were analyzed. Results:After treatment PNS-Ba,SP P-SPPW,P-T,TB-TPPW,V-LPW,UC-LC and H-C3(hor) increased(P