AIM: To evaluate the effect of cold acclimation on activity and concentration of UCP in mitochondria inner membrane of rat brown fat. METHODS: Using -labeled GTP binded UCP in mitochondria, radioactivity was measured by liquid aglimmer instrument, the dissociation constand(Kd) and maximal binding(Bmax) were determined by Scatchard plot. RESULTS: In cold acclimation pretreated rats, brown fat weight increased, Bmax increased 1.9-fold,Kd decreased 1.4-fold compared with control. CONCLUSION: Cold acclimation not only increase concentration of UCP in mitochondria inner membrane of rat brown fat,but also increase its activity.

Objective To explore the role and significance of matrix metalloproteinase-9 (MMP-9) in angiogenesis through observing the relationship between the expression of MMP-9 and microvessel density (MVD) in glioma. Methods The expressions of MMP-9 and CD34 in 10 cases of normal brain tissues and 58 cases of glioma (14 cases of grade Ⅰ , 20 cases of grade Ⅱ , 15 cases of grade Ⅲ, and 9 cases of grade Ⅳ ) were detected by immunohistochemical streptavidin-peroxidase technique. The positive cells of MMP-9 and the positive microvessels were examined under binocular light microscope. Results The positive expression of MMP-9 in glioma was located in the tumor-cell cytoplast and endothelial cells. The positive rate of MMP-9 in glioma of grade Ⅰ, Ⅱ, Ⅲ and Ⅳ was 42.9%, 65.0%, 86.7% and 88. 9%, respectively. The expression of MMP-9 was obviously higher than that of normal brain tissues (P<0.01) and positively correlated with glioma malignancy (rz =0. 597, P<0.05). MVD was correlated with glioma malignancy (H=47. 865, P<0. 05). The expression of MMP-9 was significantly correlated with MVD (rz =0.897, P<0.01). Conclusion The expressions of MMP-9 and MVD are correlated with glioma malignancy, which may be helpful in judging the malignancy, invasion and prognosis. MMP-9 plays an important role in angiogenesis of glioma and accelerates glioma malignancy development by promoting angiogenesis.

Circle of Willis is the most important intracranial collateral circulation system,it has many types of variation.Circle of Willis variants reduce intracranial blood perfusion and increase the risks of ischemic cerebrovascular diseases and white matter lesions.White matter lesions are white matter damage caused by a variety of causes.With the wide application of neuroimaging technology,the detection rate of white matter lesions is significantly higher,and it is closely associated with the ischemic cerebrovascular disease.This article reviews the correlation between circle of Willis variants and white matter lesions.

Objective To evaluate the feasibility and efficacy of endoscopic push?radial dissection (EPRD)for benign esophageal stricture(BES). Methods Clinical data of 24 patients diagnosed as having BES who received EPRD were analyzed. The procedure and efficacy were evaluated. Results All 24 patients underwent EPRD successfully with mean operation time being 32 min(15?45 min).The mean esophageal stric?ture incision length was 3?? 2 cm (1?? 0?8?? 0 cm).No severe complications related to EPRD occurred, or trans?ferred for surgery. Patients were followed up for 1?5 months (mean 2?? 8 months). Dysphagia was relieved signif?icantly during the follow?up in 23 patients where endoscopy could go through smoothly. But dysphagia re?oc?curred in one patient 2 weeks after the operation, who underwent a second EPRD and stent implantation, then dysphagia was relieved. Conclusion EPRD is safe, feasible and effective for benign esophageal stricture.

Objective To investigate the correlation between multidrug resistance gene ABCB1 C3435T polymorphism and antiplatelet drug reactivity in Chinese Han patients with ischemic stroke.Methods Consecutive inpatients with non-cardiogenic embolic ischemic stroke were enrolled.They were divided into a good response to antiplatelet drug group and poor response to antiplatelet drug group according to the results of thrombelastogram.Polymerase chain reaction-restriction fragment length polymorphism technique was use to detect the C3435T polymorphism of ABCB1 gene.Multivariate logistic regression analysis was used to determine the independent risk factors for poor response to antiplatelet drugs in patients with ischemic stroke.Results A total of 260 patients with ischemic stroke were enrolled,including 87 females (33.5％) and 173 males (66.5％).There were 193 patients (74.2％) in the good response group and 67 (25.8％)in the poor response group.The age was younger and male was more common in the good response group,and the proportions of smoking and triacylglycerol level were significantly higher (all P ＜0.05).The frequencies of TT genotype and T allele of the poor response group were significantly higher than those of the good response group (all P ＜ 0.05).Multivariable logistic regression analysis showed that triacylglycerol (odds ratio 1.045,95％ confidence interval 1.011-2.010;P =0.014) and C3435T TT genotype (odds ratio 1.512,95％ confidence interval 1.013-2.256;P=0.043) were the independent risk factors for poor response to antiplatelet drugs after adjusting confounding factors.Conclusion The C3435T TT genotype is an independent risk factor for poor response to antiplatelet drugs in Chinese Han patients with ischemic stroke.

As an important means of lung protective strategy, prone position ventilation (PPV) which can effectively shorten the time of mechanical ventilation, significantly reduce the mortality of patients with acute respiratory distress syndrome (ARDS), and is suitable for popularization and application in the ICU. However, some studies show that prolonged prone position can significantly increase the incidence of Stress injury, making it difficult to implement PPV in the practical level. In order to achieve the goal of safe and effective prevention of skin Stress injury, and to promote the correct implementation of PPV, this paper review the methods of preventing Stress injury in patients with PPV.

Objective:To explore the relationships among perceived social constraints, social participation, as well as anxiety and depression in first stroke patients, and to further analyze the mediating effect of social participation on these variables.Methods:A total of 216 first stroke patients in the Department of Neurology of Affiliated Hospital of Qingdao University from April to December 2020 were recruited by convenience sampling and investigated by general information questionnaire, Social Constraints Scale (SCS), Chinese version of Impact on Participation and Autonomy Questionaire (IPA-C) and Hospital Anxiety and Depression Scale (HADS).Results:The total score of SCS, IPA-C, depression and anxiety were 33.49 ± 6.81, 43.42 ± 9.62, 8.05 ± 4.15 and 8.61 ± 2.59. Social constraints were positively correlated with social participation as well as anxiety ( r=0.644, 0.383, both P<0.05). Social constraints were positively correlated with social participation as well as depression ( r=0.482, 0.371, both P<0.05). The quality of social participation partially mediated the relationship between social constraints and anxiety (intermediary effect was 0.119), and also partially mediated the relationship between social constraints and depression (intermediary effect was 0.270). Conclusions:First stroke patients experience high level of social constraints, low quality of social participation and severe anxiety and depression. Social constraints can affect anxiety and depression through social participation. Medical staff should build a good environment to meet the needs of stroke patients of social participation, help patients to establish a correct psychological coping style, reduce patients' avoidance of social participation due to perceived constraints and exclusion, and thus promote the mental health of patients.

AIM: To evaluate the pathogenic variants of the SCO2(OMIM 604272)gene in patients with high myopia from Enshi Tujia and Miao Autonomous Prefecture of China.METHODS: A total of 384 patients with high myopia whose spherical refractive error was ≤ -6.00 D and whose axial length was ≥26.00 mm in at least one eye were recruited. DNA was extracted by the phenol-chloroform method from 5 mL of peripheral venous blood. Sanger sequencing was performed to identify pathogenic variants in exon 2 of SCO2. The detected variants were evaluated via in silico prediction software. A total of 288 people from the same district were included as the normal control cohort.RESULTS: Seven variants were detected, namely, four synonymous variants(c.201C>T/p.=, c.576C>T/p.=, c.633A>C/p.=, c.780T>C/p.=.), two missense variants(c.187A>G/p.Ile63Val, c.59G>C/p.Arg20Pro)and one nonsense variant(c.544C>T/p.Gln182*). The two missense variants were not damaging, as predicted by PolyPhen2, SIFT and Provean. The novel nonsense variant(c.544C>T/p.Gln182*)cannot be found in the 1000 Genomes Project and was not identified in 288 normal controls. Variant Taster suggested that the nonsense variant site was conserved.CONCLUSION: The newly identified nonsense mutation may be responsible for high myopia of the patients in our cohort. SCO2 is associated with high myopia, while the incidence of SCO2 variants in high myopia in this cohort was as low as 1/384; the nonsense mutation may be a scarce variant of high myopia in the Enshi Tujia and Miao Autonomous Prefecture of China.

Objective To investigate the clinical therapeutic methods and their curative effects in recurrent ischemic angina for internal mammary artery resterosis after coronary artery bypass grafting (CABG).Methods We enrolled the patients who had recurrence of ischemic angina for restenosis of internal mammary artery graft after CABG as research subjects in the Affiliated Hospital of Yan'an University from January 2014 to January 2016.The 42 patients were divided into three groups according to the different treatment approaches for recurrence of ischemic angina:Group A (n=22)who received internal mammary artery interventional therapy;Group B (n=12)who received coronary artery bypass grafting treatment;and Group C (n=8)who received left subclavian artery proximal stent treatment.Then we compared the clinical therapeutic effects in the three groups.Results The success rate in Group C was 100%,which was the highest in the three groups,and the post-operative restenosis rate was 0.The hospitalization time was significantly shorter in Group A than in Group B (P＜0.05).However,the two groups did not significantly differ in mortality,success rate or restenosis rate (P＞0.05).Conclusion We should select the appropriate treatment according to the patient's specific situation for recurrent ischemic angina. Endovascular treatment has evident therapeutic effects,rapid postoperative recovery,and lower treatment risk, making it the preferred treatment when possible.

Objective: To investigate the efficacy of massage combined with microwave therapy in treating Children's bronchial pneumonia with syndrome of deficiency of lung-spleen Qi. Methods: Two hundred forty-four bronchial pneumonia Children were selected in our hospital and randomly divided into the control group and the observation group with 122 cases in each group referring to random number table. The control group was administered with the routine treatment. Based on the control group, the observation group received the massage and microwave therapy. The course was 2 week for both groups. The syndrome scores of traditional Chinese medicine were performed before and after treatment, and the disappearance of gasping, antipyretic, disappearance of moist rale in the lungs, and absorption time of chest X-ray were observed and recorded. the flow cytometry was used to detect peripheral blood levels of CD4⁺ and CD8⁺, and serum levels of IL-6 and IL-8 were detected by ELISA. The clinical effect rate was evaluated. Results: The total effective rate was 97.5% (118/121) in the observation group and 91.7% (110/120) in the control group,with statistically significant differences (χ²=4.406, P=0.044). After treatment, the scores of cough, phlegm, shortness of breath, pale face, fatigue, spontaneous perspiration, poor appetite in the observation group were significantly lower than those in the control group (t value were 10.008, 11.529, 11.778, 12.043, 11.309, 10.128, 11.008, P<0.01), and elapsed time of gasping, antifebrile time, disappear time of lung moist crackles, absorption time were significantly earlier than the control group (t value were 15.121, 10.099, 18.441, 14.310, P<0.01). After 2 week’ treatment, the scores of symptoms of deficiency of lung-spleen Qi in the observation group were significantly lower than those of control group (P<0.01). Compared with the control group, the duration of wheezing and antipyretic, duration of lung dampness and chest X-ray absorption in the observation group were significantly decreased (P<0.05). The total effective rate of the observation group was 97.52%, which was significantly higher than the control group 92.67% (P<0.05). After 2 week treatment, the CD4⁺ (41.03% ± 4.55% vs. 33.52% ± 3.95%, t=14.011) in the observation group was significantly higher, CD8⁺ (22.71% ± 2.83% vs. 26.65% ± 3.05%, t=10.061) was significantly lower than the control group, serum levels of IL-6 (28.13 ± 3.63 ng/L vs. 40.09 ± 4.61 ng/L, t=14.890) and IL-8 (21.41 ± 2.75 ng/L vs. 29.05 ± 3.61 ng/L, t=11.439) were significantly lower than the control group (P<0.01). Conclusions Massage combined with microwave therapy for the Children's bronchial pneumonia with deficiency of lung-spleen Qi syndrome can promote the improvement of symptoms, enhance the efficacy, increase the immune function and reduce inflammation level.