The absence of etiquette of college students,in its nature,is an issue of college students' development.Higher institutes should aim to cultivate college students into harmonious figures,carry out etiquette education,and promote the all-round development of college students.Based on a questionnaire analysis,this paper explores the causes of absence of etiquette of college students,and comes up with approaches to promoting etiquette education for college students.

Objective To investigate the effect and molecular mechanism of cyclooxygenase-2 (COX-2) on the benign prostatic hyperplasia (BPH) in rat model. Methods Thirty-six SD rats were randomly divided into 3 groups:normal control (group A,n=12),BPH model (group B,n=12) and BPH+selective COX-2 inhibitor celecoxib (group C,n=12). At the 5th week after treatment, the weight of the prostates was measured, and the morphological changes were examined under light microscope.Detection of ki-67 and TUNEL in prostatic epithelial and stromal cells was undertaken to assess the proliferation and apoptosis status.The protein and mRNA expression of COX-2,epidermal growth factor (EGF),basic fibroblast growth factor (bFGF) and transforming growth factor-?1 (TGF-?1) were analyzed by means of immunohistochemisty and RT-PCR. Results The prostate index [prostate wet weight (mg)/rat body weight (g)] of group B was significantly higher compared with those in groups A and C (1.88?0.17 vs 1.70?0.09 and 1.74?0.16,P0.05). Conclusions The increased expression of COX-2 may play an important role in the pathogenesis of BPH by modulating the expression of growth factors and affecting the proliferation and apoptosis of prostate cells.

Objective To examine the incidence of metabolic syndrome (MS) in incipient female patients with rheumatoid arthritis (RA), and study the relationship between MS and disease activity of RA. Methods The clinical data of 102 incipient female RA patients (RA group) and 125 healthy controls (control group) were retrospectively analyzed. The incidence of MS was compared between 2 groups, and the clinical and laboratory data were analyzed between patients with MS and patients without MS. Results There were no statistical differences in age, body mess index (BMI), waist circumference, systolic blood pressure, diastolic blood pressure, fasting blood glucose (FBG), triglyceride (TG) and high-density lipoprotein cholesterol (HDL-C) between 2 groups (P>0.05). The incidences of waist circumference ≥ 80 cm, TG ≥ 1.70 mmol/L, HDL-C ≤ 1.30 mmol/L, MS according to the National Cholesterol Education Program Adult Treatment Panel Ⅲ (NCEP-ATPⅢ) standard and MS according to the Chinese Diabetes Society (CDS) standard in RA group were significantly higher than those in control group: 39.2% (40/102) vs. 25.6% (32/125), 37.3% (38/102) vs. 24.0%(30/125), 34.3%(35/102) vs. 21.6%(27/125), 34.3%(35/102) vs. 22.4%(28/125) and 27.5%(28/102) vs. 16.0% (20/125)%, and there were statistical differences (P<0.05). There were no statistical differences in the incidences of BMI≥25 kg/m2, systolic blood pressure ≥130 mmHg (1 mmHg = 0.133 kPa), diastolic blood pressure ≥85 mmHg and FBG≥5.6 mmol/L between 2 groups (P>0.05). The RA patients were divided into RA with MS (35 cases) and RA without MS (67 cases) according to the MS diagnostic standard of NCEP-ATPⅢ. The erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) and blood uric acid in RA with MS patients were significantly higher than those in RA without MS patients:(68.1 ± 26.3) mm/h vs. (40.1 ± 30.6) mm/h, 4.260 mg/L vs. 1.505 mg/L and (330.5 ± 69.1)μmol/L vs. (269.0 ± 67.5)μmol/L, and there were statistical differences (P<0.05). There were no statistical differences in age, involved joint number, rheumatoid factor (RF), hemoglobin and incidence of anti-cyclic citrullinated peptide antibody (CCP antibody) between RA with MS patients and RA without MS patients (P>0.05). Conclusions The incidence of MS in incipient female patients with RA is higher than that in healthy controls, and RA patients are more prone to abdominal obesity, TG increasing and HDL-C decreasing. The inflammatory index and blood uric acid levels in RA with MS patients are significantly higher than those in RA without MS patients.

Objective To evaluate the effects of Deng Zhan Sheng Mai (DZSM) capsule, a compound made of Chinese herbs, on secondary and tertiary prevention of ischemic stroke. Methods A hospital-based randomized open-blinded clinical trial was conducted among people with a prior history of ischemic stroke. Hospitals were assigned to treatment group, in which all of the participants took DZSM capsules for 3 months, or control group, in which no DZSM capsules was administrated. The primary endpoint was the reduction of levels of blood lipids, fasting blood glucose (FBG) and fibrinogen in the 3rd month. The secondary endpoints were recurrence of stroke, incidence of cardiovascular event (CVD) and all-cause mortality in the 18th month. Results 495 people were enrolled in the treatment group and 504 in the control group, respectively. In the 3rd month, the levels of total cholesterol(TC),FBG and fibrinogen were significantly reduced by 1.7%,4.3 and 8.2%(t values were 4.13,6.65 and 8.50 respectively),and the levels of HDL-C and HDL-C/TC were increased by 7.6%and 1 1.6%(t values were 2.15 and 3.67)in the treatment group, respectively(all P＜0.05＝.The levels of TC,HDL-C and HDL-C/TC decreased significantly in the eontrol group(all P＜0.05＝.The incidence of recurrent stroke and CVD events were lower in the treatment group than those in the control group, but the differences did not reach the significant levels. The prevalence of post-stroke depression (PSD) was also decreased in the 3rd mouth while it remained stable in the controls (P for trend equals to 0.0027). The mortality was significantly lower in the treatment group (P=0.008). Conclusion The levels of TC,FBG and fibrinogen as well as the prevalence of PSD and all-cause mortality have decreased significantly in treatment group treated with DZSM capsule for 3 months as compared with the control group.

Objective To estimate the prevalence and related risk factors of post-stroke depression (PSD) in ischemic stroke survivors from community-based medical centers in urban areas of Beijing.Methods Five community-based medical centers in urban areas of Beijing were selected.Patients with first-ever or recurrent ischemic stroke were evaluated from January 2003 to December 2006. The prevalence of PSD was evaluated by Self-Rating Depression Scale (SDS), and the information on the onset of stroke, vascular risk factors and living style was also collected.Results Totally 1089 stroke patients were registered, 1074 cases among which had complete information and met inclusion criteria. The mean age of the patients was (65.0 ± 8.9) years with a median stroke course of 13.0 months. The overall prevalence of PSD was 49.9% (536/1074), and the proportions of mild, moderate and major PSD were 52.2%, 36.0% and 11.8%, respectively. There were no significant differences in prevalence of PSD among different stages of stroke and the prevalence of PSD was 51.3% within 6 months after stroke onset, 47. 1% during 6-18 months and 53.2% after 18months. Low education, activities of Daily Living (ADL) dependence, cognition impairment and recurrence of stroke were independent risk factors for PSD.Conclusions The prevalence of PSD among ischemic stroke patients is higher in community-based medical centers, but most of PSD patients are mild or moderate. More effective early intervention should be adopted to decrease PSD,promote the recovery of neural function and improve their quality of life.

ObjectiveTo evaluate the relationship between metabolic syndrome (MS) and benign prostatic hyperplasia ( BPH ) in men over 50 years old.Methods Male participants over 50 years old form a community in Beijing were randomly selected.Age,blood pressure,past history,and the international prostate symptom score (IPSS) were recorded.Plasma glucose,triglyceride,high density lipoprotein,prostate specific antigen (PSA),prostatic volume,and Qmax were measured.The morbidity and severity of BPH were compared with statistical analysis.ResultsFour hundred and forty men were enrolled,and were divided into 2 groups:MS group (n =105) and non-MS group (n =335).Compared to the non-MS,non-obesity,and non-hyperlipidemia group respectively,the morbidity of BPH was higher in MS,obesity and hyperlipidemia group (33.3％ vs.11.9％,P ＜ 0.05 ; 20.4％ vs.11.8％,P ＜ 0.05 ; 25.0％ vs.14.1％,P =0.007).The morbidity of moderate and severe LUTS in MS group was higher than non-MS group (61.9％ vs.31.3％,P ＜ 0.05).Significant differences were found in IPSS,prostate volume and PSA between the MS and non-MS groups ( P ＜ 0.05 ),but not found in Qmax ( P =0.069).Obesity,hyperlipemia and diabetes mellitus were risk factors of BPH (OR 1.75,95％ CI 1.40 -21.82,P =0.041 ; OR 3.36,95％ CI 2.34-48.13,P=0.037; OR 2.08,95％ CI 1.32-13.67,P=0.045). Conclusions There is higher morbidity of BPH in MS patient.MS could increase IPSS and prostate volume,and reduce PSA in BPH patient.Obesity,hyperlipemia and diabetes mellitus are risk factors of BPH.MS should be considered when treating BPH.

Background and purpose:Laparoscopic partial nephrectomy has been one of the surgery options for patients with single renal carcinoma of T1 stage. Under the effect of some factors, intraoperative renal blood lfow clamping somtimes exceeds the safe limit of 30 minutes of warm ischemia time (WIT) for renal tissues, that might results in warm ischemia-reperfusion injury to severe extent. However, there still remains controversy about the depth of this warm ischemia-reperfusion injury. So this study aimed to evaluate the effects of longer WIT on ipsilateral residual renal tissues. Methods:Forty-four patients underwent retroperitoneal laparoscopic partial nephrectomy from Jan. 2012 to Jan. 2014. All of them were divided into observe group (WIT>30 min) and control group (WIT≤30 min). The differences of glomerular filtration rate (GFR) of operative kidney Pre- and post-operatively between two groups were analyzed. Results: The pre- and post-operative GFRs of operative kidney in observe group were 29.3-53.0 mL/min[(33.1±5.2) mL/min], 23.1-40.5 mL/min[(27.3±5.9) mL/min] respectively (P=0.054). The pre-and post-operative GFRs of operative kidney in control group were 27.4-49.6 mL/min[(32.3±4.1) mL/min], 23.8-44.4 mL/min[(29.1±5.0) mL/min], respectively (P=0.07). There was no statistically differences of the depth of the decrease of GFRs after surgery between the two groups (P=0.051). Conclusion: WIT of 30-60 min does not result in statistically signiifcant injury for ipsilateral residual renal function. However, it is still necessary to reserve more ipsilateral residual renal function through minimizing WIT under the premise of ensuring the safety of surgery.

Objective:To explore the clinical characteristics, possible causes and treatment methods of anaphylactoid reactions related to PICC catheterization.Methods:A retrospective analysis of the data of 27 patients with anaphylactoid reactions in 3 933 PICC catheters from October 2018 to February 2020.Results:The incidence of anaphylactoid reactions was 0.69%(27/3 933), its clinical symptoms were mainly skin reactions, some of which were complicated with respiratory, digestive, cardiovascular system and other symptoms. There was no difference in the incidence of different genders, diagnosis, and history of allergy ( χ2 value was 2.233, 0.839, 0.027, P>0.05). The incidence of patients younger than 60 years old was higher than that of patients older than 60 ( χ2 value was 12.821, P<0.01); the incidence of two catheters with different coatings was higher than that of uncoated catheters ( χ2 value was 27.195, 84.203, P<0.01). Twenty six patients continued the catheterization after the symptoms relieved, and one patient stopped the catheterization. Conclusion:The incidence of anaphylactoid reactions related to PICC, which is more common in catheters or the stylet wire is coated. It is recommended to use a large amount of saline to flush the catheter to reduce or avoid coating materials into the blood, so as to effectively control the occurrence and severity of such complications.

Chemical investigatation of Drosera peltata var. multisepala led to the isolation of eleven compounds using various chromatographic techniques. The structures of these compounds were elucidated as isoshinanolone-4-O-beta-D-glucoside (1), isoshinanolone (2), epi-isoshinanolone (3), plumbagin (4), droserone (5), droserone-5-O-glucoside (6), quercetin (7), kaempferol (8) , gossypetin-8-O-glucoside (9), 3,3'-dimethoxy ellagic acid (10), and ellagic acid (11) by their physicochemical properties and spectral data analysis. Compound 1 was a new compound. Compounds 3, 8, 10, and 11 were isolated from this plant for the first time.
Chromatography, Liquid ; methods ; Drosera ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Ellagic Acid ; analogs & derivatives ; analysis ; isolation & purification ; Glucosides ; analysis ; isolation & purification ; Kaempferols ; analysis ; isolation & purification ; Magnetic Resonance Spectroscopy ; methods ; Molecular Structure ; Naphthoquinones ; analysis ; isolation & purification ; Plant Extracts ; analysis ; isolation & purification ; Quercetin ; analysis ; isolation & purification ; Spectrometry, Mass, Electrospray Ionization ; methods ; Tetrahydronaphthalenes ; analysis ; isolation & purification

PURPOSE: The aim of this study is to investigate the effect of genetic variations and the expression of the reduced folate carrier (RFC) and dihydrofolate reductase (DHFR) on the drug sensitivity to methotrexate (MTX) in different cancer cell lines. MATERIALS AND METHODS: We examined the six human cancer cell lines (MCF-7, AGS, A549, NCI-H23, HCT-116 and Saos-2). The cytotoxicity of MTX was measured by sulforhodamine B (SRB) assay. The expressions of the DHFR and RFC were evaluated by real-time PCR and western blotting. Four single nucleotide polymorphisms (SNPs) of the DHFR and two SNPs of the RFC were genotyped. RESULTS: The IC50s of MTX was in an extensively broad range from 6.05+/-0.81 nM to>1,000 nM in the cell lines. The Saos-2 (>1,000 nM) and MCF-7 (114.31+/-5.34 nM) cells were most resistant to MTX; in contrast, the AGS and HCT-116 cells were highly sensitive to MTX with an IC50 of 6.05+/-0.81 nM and 13.56+/-3.76 nM, respectively. A reciprocal change of the RFC and DHFR mRNA expression was found between the MTX-sensitive AGS and MTX-resistant Saos-2 cells. There was no significant difference in the expression levels of RFC protein in both the AGS and Saos-2 cells, whereas DHFR protein was more increased in the MTX-resistant Saos-2 cells treated with MTX. The genotype of the MTX-sensitive AGS cells were mutant variants of the DHFR; in contrast, the Saos-2 cells had the wild-type of the DHFR. CONCLUSION: In conclusion, this study showed that inverse change of the RFC and DHFR mRNA and protein expression was associated with RFC and DHFR polymorphisms and it is postulated that this phenomenon might play an important role in sensitivity of certain cancers to MTX.
Blotting, Western ; Cell Line ; Folic Acid ; Genetic Variation ; Genotype ; HCT116 Cells ; Humans ; Inhibitory Concentration 50 ; Methotrexate ; Polymorphism, Single Nucleotide ; Real-Time Polymerase Chain Reaction ; Reduced Folate Carrier Protein ; Rhodamines ; RNA, Messenger ; Tetrahydrofolate Dehydrogenase