Objective : To learn the awareness of chronic diseases prevention and control and its influencing factors among high school students in regions inhabited by ethnic groups,so as to strengthen the prevention of chronic diseases among adolescents in these regions. Methods: Totally 1 050 high school students in Tuquan County,Hinggan League,Inner Mongolia were selected by cluster sampling method. The general information,family factors,attitude to learning,psychological factors,behavioral styles and awareness of chronic diseases prevention and control were investigated,and the influencing factors for the awareness were analyzed by multivariate logistic regression model. Results: There were 1 001 valid questionnaires recovered,with a response rate of 95.33%. There were 685 Han students,accounting for 68.43%,241 Mongol students,accounting for 24.08%,and 75 students with other ethnic minorities,accounting for 7.49%. The average awareness rate of chronic diseases prevention and control was 53.25%;the awareness rates of hypertension prevention measures,smoking and drinking hazards,food susceptible to aflatoxin pollution and high cholesterol food were high,all more than 70%;while the awareness rates of long-term high lipid hazards,high blood pressure diagnosis standard and diabetes symptoms was low,all less than 40%. There was no significant difference in the awareness rate of chronic diseases prevention and control among different nationalities（P>0.05）. The results of multivariate logistic regression analysis showed that the students who were female（OR=1.309,95%CI：1.008-1.700）,had high achievement（OR=1.509,95%CI：1.055-2.159）,and thought exams were important（OR=1.570,95%CI：1.204-2.046）were more likely to have high awareness,while the students who spent five to less than eight hours a day on screens（OR=0.514,95%CI：0.335-0.789）were less likely to have high awareness. Conclusions The awareness rate of chronic diseases prevention and control of high school students in Tuquan County is 53.25%,and there is no significant difference between Mongol and Han students. Gender,academic performance,attitude to examination and time spent on screens can affect the awareness rate.

Objective:To analyze the labor progression characteristics of primiparous term singleton pregnant women with adenomyosis.Methods:From April 2014 to May 2021, pregnant women underwent regular antenatal examination in Peking University Third Hospital were enrolled in this retrospective study, 109 primiparous term pregnant women with adenomyosis who underwent singleton, primipara, cephalic and vaginal delivery were referred as the adenomyosis group, while 109 pregnant women without adenomyosis primiparous term pregnant women at the same time were referred as the control group. The general clinical information, labor process intervention, pregnancy outcomes and labor course time of the two groups were analyzed.Results:(1) General clinical conditions: the pre-pregnancy uterine volume of the adenomyosis group was larger than that of the control group [(66.8±23.7) vs (41.4±13.1) cm 3, P<0.05]. The proportion of assisted reproductive pregnancy and endometriosis in the adenomyosis group were higher than those in the control group [31.2% (34/109) vs 7.3% (8/109); 31.2% (34/109) vs 5.5% (6/109); all P<0.05]. There were no significant differences in maternal age, gestational age at delivery, pre-pregnancy body mass index, gestational weight gain, gravidity, incidence of pregnancy complications (gestational diabetes mellitus, pre-eclampsia and thyroid diseases) and premature rupture of membranes between the two groups (all P>0.05). (2) Labor process intervention and maternal and fetal outcomes: postpartum hemorrhage was higher in the adenomyosis group than the control group (median: 300 vs 260 ml, P=0.018). There were no significant differences in the proportion of labor onset, use of oxytocin, artificial rupture of membranes, perineal laceration Ⅲ and above, episiotomy, newborn weight and 1-minute Apgar score between the two groups (all P>0.05). (3) Time of labor process: there were no significant differences between the two groups in the time required for the first stage, third stage, total stage and cervical dilation 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7 cm (all P>0.05). The time required for cervical dilation 7-8, 8-9, 9-10 cm and the second stage of labor in adenomyosis group (median: 20, 18, 15 and 12 minutes, respectively) were shorter than those of the control group (median: 23, 23, 23 and 26 minutes, respectively), and the differences were statistically significant (all P<0.05). (4) The effect of endometriosis on labor: there was no significant difference in the effect of endometriosis on labor in adenomyosis group ( P>0.05). Conclusions:The labor process of primiparous term pregnant women with adenomyosis is significantly accelerated after the cervical dilatation for 7 cm, which should be closely observed. The third stage of labor course is managed aggressively with drugs to prevent postpartum hemorrhage.

Objective To investigate the clinical application value of the non-shared incentive diffusion weighted imaging(ZOOM-DWI)technique at cervical level in diagnosis of cervical spondylotic myelopathy(CSM).Methods A total of 49 CSM patients(patient group),and 50 healthy volunteers(control group)were recruited.All subjects underwent conventional MRI and ZOOM-DWI of the cervical spine and neurologic modified Japanese Orthopaedic Association(mJOA)scores in patients with CSM.The apparent diffusion coefficient(ADC)value in the spinal cord at the narrowest area(C5-C6)of the compression site of patients,the ADC value at the disc level in each upper and lower level,and the spinal ADC value at the cervical level C2-C3 were measured.The ADC values of control group C2-C3,C3-C4,C4-C5,C5-C6,C6-C7 were measured.Within-group comparisons of the spinal cord ADC values for each segment between patient and control groups were performed using analysis of variance and post hoc comparisons(SNK-q).The ADC values at the narrowest point of the patient group and control group were tested by independent sample t-test.The Pearson correlation analysis was performed between patients'C5-C6 ADC values and mJOA scores.Results The mean ADC values showed no significantly different levels in the control group.Among the ADC values at each measurement level in the patient group,except for C4-C5 and C6-C7 where the difference was not statistically significant,the remaining pair-wise comparisons all showed statisti-cally significant differences(F=24.368,P＜0.001),with the highest ADC value at C5-C6.The C5-C6 ADC value in the patient group was significantly higher compared to the control group(t=9.414,P＜0.001),with statistical significance.The ADC values at the patient stenosis showed a significant negative correlation with the mJOA score(r=-0.493,P＜0.001).Conclusion Cervical ZOOM-DWI technique can be applied to diagnose CSM,and spinal ADC values can be used as reliable imaging data for diagnosing CSM.

Objective:To evaluate the relationship between choline acetyltransferase (ChAT) positive neurons in parabrachial nucleus and development of fear memory in mice.Methods:Eighteen healthy male ChAT-ires-cre mice, aged 8-9 weeks, weighing 22-25 g, were divided into 3 groups ( n=6 each) using a random number table method: Cre-dependent AAV-DIO-hM 3Dq-mcherry (Gq) virus/clozapine-N-oxide (CNO) group (group Gq/CNO), Gq/normal saline (NS) group (group Gq/NS) and Cre-dependent AAV-DIO-mcherry (mc) virus/CNO group (group mc/CNO). Gq virus was injected into parabrachial nucleus, and CNO 2 mg/kg was injected intraperitoneally 3 weeks later in group Gq/CNO.Gq virus was injected into parabrachial nucleus, and the equal volume of normal saline was injected intraperitoneally 3 weeks later in group Gq/NS.In group mc/CNO, mc virus was injected into parabrachial nucleus, and CNO 2 mg/kg was injected intraperitoneally 3 weeks later.The fear conditioning test was performed at 30 min after intraperitoneal injection in all the 3 groups.The brains were then removed and sliced.The virus expression and areas of the brain projected by ChAT positive neurons were observed. Results:Compared with group Gq/CNO, the percentage of freezing time was significantly increased during testing phase in Gq/NS and mc/CNO groups ( P<0.05). Gq/mc virus carrying fluorescent protein mcherry was expressed in parabrachial nucleus and was co-expressed with mcherry-ChAT.The fibers of ChAT positive neurons projected to the red nucleus, substantia nigra, central amygdala, anterodorsal thalamic nucleus and bed nucleus of stria terminalis. Conclusion:The ChAT positive neurons in parabrachial nucleus are involved in the regulation of the development of fear memory in mice, which can impair fear memory, and the regulation is carried out probably through central amygdala.

Objective To investigate the improvement of oxygenation after the treatment of prone position in patients with severe acute respiratory distress syndrome (ARDS) caused by pneumocystis jirovecii pneumonia (PJP) after kidney transplantation. Methods Clinical data of 5 cases of moderate and severe ARDS caused by PJP after kidney transplantation were analyzed retrospectively, and clinical characteristics, treatment regimen and prognosis were summarized. Results Clinical manifestations of 5 patients were fever, dry cough, chest tightness, shortness ofbreath,sweating and fatigue, and body temperature fluctuated between 38 ℃ and 39 ℃, percutaneous arterial oxygen saturation(SpO₂) was gradually decreased, and respiratory distress symptoms were worsened. Pulmonary CT scan showed diffuse ground-glass shadow. After transfer to intensive care unit (ICU), immunosuppressive drugs were terminated, and all patients were given with compound sulfamethoxazole, caspofungin, low-dose glucocorticoids against pneumocystis jirovecii (PJ), oxygen therapy and other symptomatic supportive treatments. Four patients diagnosed with severe ARDS upon admission to ICU were treated in a prone position. One patient with moderate ARDS was not kept in a prone position. At 1 d after treatment in a prone position, partial pressure of arterial oxygen (PaO₂) and oxygenation index were increased, whereas alveolar-arterial oxygen difference (A-aDO₂) was decreased compared with before treatment (allP<0.05). Compared with 1 d after treatment, SpO₂, PaO₂ and oxygenation index were all increased, while A-aDO₂ was decreased at 4 d after treatment (all P<0.05). Box diagram showed that oxygenation index showed an overall upward trend after prone-position treatment, whereas A-aDO₂ showed an overall downward trend. The length of ICU stay of 5 patients was 14 (8, 29) d. All patients in a prone position did not develop complications, such as skin pressure sore, tube detachment and tube displacement, etc. Among 5 patients, 4 patients were mitigated, and 1 patient died of septic shock and multiple organ failure. Conclusions For both conscious and intubated patients, a prone position may significantly improve oxygenation and prognosis of patients with severe ARDS caused by PJP after kidney transplantation. Early diagnosis and accurate and standardized treatment play a pivotal role in enhancing cure rate.

Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease caused by inflammatory cells. Various inflammatory cells involved in RA include fibroblast-like synoviocytes, macrophages, CD4⁺T-lymphocytes, B lymphocytes, osteoclasts and chondrocytes. The close interaction between various inflammatory cells leads to imbalance of immune response and disorder of the expression of mRNA in inflammatory cells. It helps to drive production of pro-inflammatory cytokines and stimulate specific antigen-specific T- and B-lymphocytes to produce autoantibodies which is an important pathogenic factor for RA. Competing endogenous RNA (ceRNA) can regulate the expression of mRNA by competitively binding to miRNA. The related ceRNA network is a new regulatory mechanism for RNA interaction. It has been found to be involved in the regulation of abnormal biological processes such as proliferation, apoptosis, invasion and release of inflammatory factors of RA inflammatory cells. Understanding the ceRNA network in 6 kinds of RA common inflammatory cells provides a new idea for further elucidating the pathogenesis of RA, and provides a theoretical basis for the discovery of new biomarkers and effective therapeutic targets.
Humans ; Arthritis, Rheumatoid/genetics* ; MicroRNAs/metabolism* ; Synoviocytes/pathology* ; Cytokines/metabolism* ; RNA, Messenger/metabolism* ; Fibroblasts/pathology* ; Cell Proliferation