Objective: To observe influence of aerobic exercise on blood pressure in patients with white coat hypertension (WCH). Methods: A total of 51 newly diagnostic WCH patients were randomly divided into exercise group (n=26) and WCH control group (n=25). Patients in exercise group received aerobic exercise training (walking on flat ground by constant speed, twice a day, 50~80 min each time for three months); The WCH control group did not exercise. Office blood pressure (OBP) and 24h ambulatory blood pressure monitoring (ABPM) were measured in both groups before and three months after treatment. Results: There were no significant difference in indexes of OBP and ABPM between two groups before treatment (P>0.05). After three months, compared with before treatment, indexes of OBP and ABPM significantly decreased in exercise group and they were significantly lower than those of WCH control group in OBP [OSBP: (132.54±17.60) mmHg vs. (143.68±20.35) mmHg, ODBP: (89.12±18.39) mmHg vs. (92.75±17.24) mmHg] and ABPM [ mSBP：(121.57±20.86) mmHg vs. (128.06±19.45) mmHg, mDBP：(76.24±15.28) mmHg vs. (84.55±17.31) mmHg; dSBP：(124.27±22.50) mmHg vs. (130.85±24.61) mmHg, dDBP：(77.95±18.42) mmHg vs. (82.36±17.59) mmHg], P<0.05~0.01. Conclusions: Aerobic exercise can significantly improve blood pressure in patients with white coat hypertension.

ObjectiveTo investigate the treatment effects of comprehensive nursing intervention on patients with chronic obstructive pulmonary disease(COPD) treated by non-invasive mechanical ventilation with BiPAP mode.Methods96 patients with diagnosed COPD and using non-invasive mechanical ven- tilation with BiPAP mode were randomly divided into the control group(46 cases) which was treated with routine measures and the comprehensive nursing intervention group (50 cases) which adopted comprehen- sive nursing intervention according to experimental design. The frightening degree, incidence rate of com- plications and clinical treatment effect by ventilator were compared between the two groups.ResultsPa- tients compliance with treatment and clinical treatment effect by ventilator in the comprehensive nursing in- tervention group was better than that of the control group. The frightening degree and incidence rate ofcomplications were lower than those of the control group (P < 0.01 ).ConclusionsComprehensive nurs-ing intervention with non-invasive mechanical ventilation with BiPAP mode can improve the treatmentcompliance of COPD patients,reduce complications followed by non-invasive mechanical ventilation andreach the prospective treatment effect.

Objective To evaluate the results of prosthesis augmentation,relieve suffering patient experience,improve shape and touch of breast.Methods According to design,in dual-plane mammaplasty transaxillary approach with endoscopic assistance,we used soft-tissue expansion before prosthesis,saline volume in expander was the same as prosthesis size at beginning; adjusting expander volume and position,then determined prosthesis size according to expander volume lastly.after intraoperative sustained expansion for 30 to 60 minutes twice prosthes volume,replace expander with prosthesis.Results This method was applied in 120 patients,showing that pain significantly reduced after expansive without use of analgesia pump; complications included that 3 patients appeared seroma and absorbed soon; 2 patients had poor prosthese location,which was adjusted in reoperation; one capsular contracture was repaired later.After 6-months to 2-years follow-up,the results showed that breast was nature and dynamic; satisfactory rate reached to 95 ％.Conclusions In augmentation mammaplastic operation,pre-adoption of an expander can make it easy to adjust the location of prosthesis,to avoid being injured and to determine prosthesis volume by expander injection of saline volume,especially for patient with different size of both breasts.

Objective:To evaluate the occluding effect of 2 kinds of Er laser on dentinal tubules.Methods:27 dentine discs were prepared,etched with 0.5 mol/L EDTA and then divided into 3 groups(n =9).The samples in group A without treatment were used as the controls,in group B treated with Er:YAG laser irradiation and in group C treated with Er,Cr:YSGG laser irradiation.The occluding effect was examined by scanning electron microscopy (SEM).Results:Micrographs of SEMshowed obvious occluding effect in group B and C.The dentinal tubule exposure rates of group A,B and C were 33.61 0% ±7.545%,4.1 86% ±0.723% and 3.798% ± 0.843% respectively(among 3 groups,P <0.01 ;B vs C,P >0.05).Conclusion:The 2 kinds of Er laser can block dentinal tu-bules.

Objective To investigate the effect of vascular inner diameter and artery flow velocity on the flow of internal arteriovenous fistula. Methods Sixty-two patients received the operation of internal fistula were enrolled. According to the inner diameter (Group A: d ≤ 1.5 mm, Group B: 1.5 mm < d ≤ 2.0 mm, Group C: 2.0 mm < d ≤ 3.0 mm, Group D: d > 3.0 mm), the patients were divided into four groups in terms of artery flow velocity (Group a: v ≤ 20 cm/s, Group b:20 cm/s < v≤50 cm/s, Group c:50 cm/s < v ≤ 100 cm/s, Group d:v > 100 cm/s), the differences of fistula and dialysis flow for two months were analyzed among various groups. Results Compared with Group B/b, patients in Group A/a had higher risk of operation failure, with lowered inner fistula flow and dialysis flow. In terms of inner venous diameter , there were significant differences between Group B and C. Conclusions It is not recommended to carry out the inner vascular fistula operation. Followed with the thickening and increasing of inner artery diameter and artery flow , the inner fistula flow and the dialysis flow increase. The inner venous diameter has no significant impact on the inner fistula flow.

Objective: To investigate the prevalence of depression and anxiety among transgender populations and the correlation with defense mechanism, so as to provide the evidence for improving mental health among transgender populations. Methods: Transgender populations that visited Psychosexual Outpatient Department of Beijing Huilongguan Hospital for the first time from December 2020 to December 2021 were enrolled. Participants' demographics, depression, anxiety and type of defense mechanisms were collected using self-designed questionnaires, Self-rating Depression Scale, Self-rating Anxiety Scale and Defense Style Questionnaire (DSQ). Factors affecting depression and anxiety were identified using a multivariable logistic regression model. Results: Totally 126 transgender individuals were enrolled, including 95 men (75.40%) with a mean age of (21.53±4.55) years and 31 women (24.60%) with a mean age of (23.58±5.55) years. The prevalence of depression was 46.83% among participants, including 44.07% of participants with mild depression, 30.51% with moderate depression and 25.42% with severe depression, and the prevalence of anxiety was 26.19% among participants, including 60.61% of participants with mild anxiety, 21.21% with moderate anxiety and 18.18% with severe anxiety. The detection of depression was 54.74% among men and 22.58% among women (P<0.05), and the detection of both depression (62.79% vs. 38.55%, P<0.05) and anxiety (41.86% vs. 18.07%, P<0.05) was significantly higher among transgender populations with self-injury or suicide behaviors than among those without. Multivariable logistic regression analysis showed that immature defense mechanisms increased the risk of depression (OR=1.034, 95%CI: 1.018-1.051) and anxiety (OR=1.031, 95%CI: 1.014-1.049) among transgender populations, while mature defense mechanisms reduced the risk of depression (OR=0.887, 95%CI: 0.832-0.946) and anxiety (OR=0.878, 95%CI: 0.821-0.938) among transgender populations. Conclusions The prevalence of depression and anxiety was 46.83% and 26.19% among transgender populations included in this study. Mature defense mechanisms are beneficial to reduce the risk of depression and anxiety among transgender populations. Key words： transgender population depression anxiety defense mechanism

Pi.Au-Pt alloy does not resist the growth and adhesion of the bacteria, but Au-Pd does.

Objective:To explore the influence of selective fetoscopic laser occlusion of chorioangiopagous vessels (FLOC) versus Solomon surgery in the management of twin-to-twin transfusion syndrome (TTTS) on procedure-related complications, fetal survival rate, and residual anastomoses.Methods:A total of 59 pregnant women with TTTS who underwent FLOC in the Third Affiliated Hospital of Zhengzhou University from May 2018 to March 2020 were retrospectively enrolled and divided into Solomon ( n=33) and selective FLOC groups ( n=26) based on the FLOC operation method. Placentae of 25 pregnant women (15 in the Solomon group, 10 in the selective FLOC group) with both survival twins were perfused to observe the type and diameter of the residual anastomoses. Fetal survival rate, procedure-related complications, and the type and diameter of residual anastomoses were analyzed and compared between the two groups using two independent samples t-test, Mann-Whitney U test, χ2 test and Fisher's exact test. Results:(1) The operating time of Solomon was shorter than that of selective FLOC [74 min (60-90 min) vs 95 min (81-123 min), Z=2.906, P=0.004]. But no statistically significant differences in the gestational week at operation, time of pregnancy end, and the interval between operation and pregnancy end was observed between the two groups (all P>0.05). (2) There was no statistically significant difference in the survival rate of both twins, one fetus, at least one fetus, and the incidence of postoperative twin anemia-polycythemia sequence (TAPS) and recurrent TTTS in the Solomon group and selective FLOC group [64%(21/33) vs 50%(13/26), χ2=1.107; 15%(5/33) vs 35%(9/26), χ2=3.044; 79%(26/33) vs 85%(22/26), χ2=0.326; 3%(1/33) vs 12%(3/26), χ2=1.368; 0% (0/33) vs 4%(1/26), χ2=1.118; all P>0.05]. (3) There was no statistically significant difference in the number of placentae with residual anastomoses or the number of artery-to-vein, vein-to-artery, artery-to-artery, and vein-to-vein anastomoses between the two groups (7/15 vs 6/10, 2/8 vs 4/15, 3/8 vs 4/15, 2/8 vs 5/15, 1/8 vs 2/15; Fisher's exact test, all P>0.05), but the diameter of the residual anastomoses in the Solomon group was smaller than that in the selective FLOC group [(0.8±0.3) and (2.2±0.7) mm, t=0.764, P=0.034]. (4) Among the four pregnant women developed TAPS after operation, one patient had two residual artery-to-vein anastomoses in the placenta with diameter of 0.54 mm and 0.43 mm, respectively; one patient had one artery-to-vein anastomosis with a diameter of 0.64 mm; one had one artery-to-artery and one vein-to-vein anastomosis with diameter of 1.56 mm and 1.89 mm, respectively. Conclusions:Compared with selective FLOC, Solomon surgery can reduce the vessel diameter of residual anastomoses in women with TTTS, but does not reduce postoperative complications, nor improve the pregnancy outcomes.

Objective To evaluate effects of the daily average temperature on the daily number of outpatient visits for eczema in Lanzhou city.Methods Clinical data were obtained from outpatients with eczema in the Department of Dermatology of 2 third-grade class-A hospitals in Lanzhou city from January 1st 2007 to December 31st 2015,and meteorological data during this period were also collected.Controlling for confounding factors like long-term trends and day of the week,a distributed lag non-linear model (DLNM) fitted with quasi-Poisson link function was used to assess the effects of daily average temperature on the daily number of outpatient visits for eczema,and the analysis was stratified by season,age and gender.Results The exposure-response relationship between the daily average temperature and daily number of outpatient visits for eczema could be roughly described by a W-shaped curve.Stratification analysis showed that the effect of the daily average temperature on outpatient visits for eczema was strongest in autumn and winter,followed by summer,and weakest in spring.Low temperature may have lagged,cumulative and persistent effects on the daily number of outpatient visits for eczema,with the maximum relative risk (RR) value (1.12 [95％ CI:1.03-1.22]) observed at-9 ℃ on lag day 14.With a 1 ℃decrease in the temperature,16％ (RR =1.16,95％ CI:1.00-1.03),14％ (RR =1.14,95％ CI:1.02-1.26) and 13％ (RR =1.13,95％ CI:1.02-1.25) increases in the daily number of outpatient visits for eczema were observed in men,teenagers and middle-aged adults respectively (P ＜ 0.05).However,low temperature had no significant effects on outpatient visits for eczema among women or the elderly (P ＞0.05).The effect of high temperature usually occurred following exposure without lag periods,and was gradually weakened over lag time (P ＞ 0.05).Conclusions In Lanzhou,the effect of daily average temperature on outpatient visits for eczema was strongest in autumn and winter.Changes of the daily temperature may be one of risk factors for eczema.Low temperature had lagged effects on the daily number of outpatient visits for eczema,and the effects were strongest on lag day 14.

Objective To establish cell model of Parkinson's disease(PD)and to approach the toxic effect of rotenone on dopaminergic neurons and its mechanism.Methods PC12 cells were differentiated into dopaminergic neurons and treated with various concentrations of rotenone.The morphological changes of PC12 cells were observed after treated with rotenone(0,10,25,50,75,and 100 nmol?L-1)for 24,48 and 72 h,the cell viability was measured by MTT assay.Immunohistochemistry and immunofluorescence were used to observe the accumulation of ?-synuclein in cytoplasm.AO/EB double staining was also adopted to test apoptosis.Results After differentiation PC12 cells shaped irregularly with big and long ecptomas and multiple cell conjunctions.After the treatment of rotenone cell ecptomas vanished gradually and cell bodies became smaller and smoother.The cell viability began to decline significantly at a concentration of 50 nmol?L-1 for 24 h(P