The mediating effect of social support between adult attachment and family resilience in young and middle-aged patients undergoing peritoneal dialysis / 中国实用护理杂志

Objective:To explore the mediating effect of social support between adult attachment and family resilience in young and middle-aged patients undergoing peritoneal dialysis, and to provide reference for psychological health care of young and middle-aged peritoneal dialysis patients.Methods:From September 2019 to February 2022, the prospective research method was adopted to investigate a total of 100 young and middle-aged patients undergoing peritoneal dialysis by general information questionnaire, Experiences in Close Relationship Scale-short form, Social Support Rating Scale, Family Resilience Scale, respectively. Multiple linear regression and structural equation model was used to evaluate the mediating effect of social support on adult attachment and family resilience.Results:The scores of attachment avoidance and attachment anxiety in Experiences in Close Relationship Scale-short form were (46.47 ± 10.23) points and (63.67 ± 10.37) points; Social Support Rating Scale scores were (36.40 ± 7.27) points; Family Resilience Scale scores were (94.21 ± 11.40) points. There was a negative correlation of attachment anxiety and attachment avoidance with total score and each dimension score of Social Support Rating Scale and total score and each dimension score of Family Resilience Scale ( r values were -0.844--0.373, all P<0.05). Attachment anxiety and attachment avoidance had a significantly indirect effect on the family resilience of young and middle-aged peritoneal dialysis patients through social support, which showed that the mediating effect of social support accounts for 41.6% and 48.8% of the total effect. Conclusions:Social support plays a mediating role in the relationship between adult attachment and family resilience in young and middle-aged peritoneal dialysis patients, nurses can focus on social support to reduce the adverse effects of adult attachment on family resilience.

Analysis on voluntary blood donation and associated factors in men who have sex with men in 3 cities in China / 中华流行病学杂志

Objective To assess the prevalence of blood donation and associated factors in men who have sex with men (MSM) in China.Methods Our observational study was conducted between January and August,2017 in 3 cities:Guangzhou,Shenzhen and Wuxi.Eligible participants were MSM (≥ 18 years old) who had either ≥2 male sex partners or unprotected anal sex with casual partners,or had been diagnosed with STI in the past 6 months.A self-completed tablet-based questionnaire was used to collect the information about MSM's socio-demographic characteristics,sexual behaviors and blood donation history.Results A total of 603 MSM were enrolled in our study,including 302 in Guangzhou,152 in Shenzhen and 149 in Wuxi,with a mean age of 27.9 years (SD=7.8).Overall,29.2％ (176/603) of the MSM reported a history of blood donation,and 33.1％ (100/302) in Guangzhou,27.6％ (42/152) in Shenzhen and 22.8％ (34/149) in Wuxi,the differences were not significant (x2=6.421,P=0.093).Multivariate logistic regression analysis indicated that MSM had ever tested for HIV for ≥2 times in the past 12 months (vs.MSM tested for HIV one time,aOR=1.49,95％CI:1.08-2.19) or who had ever used gay dating app (vs.MSM who not used gay dating app,aOR=2.13,95％CI:1.12-4.44) were more likely to donate blood.Conclusions Blood donation was common in MSM in China.Health education about blood donation in MSM should be strengthened to ensure the blood safety.

Analysis on voluntary blood donation and associated factors in men who have sex with men in 3 cities in China / 中华流行病学杂志

Objective To assess the prevalence of blood donation and associated factors in men who have sex with men (MSM) in China.Methods Our observational study was conducted between January and August,2017 in 3 cities:Guangzhou,Shenzhen and Wuxi.Eligible participants were MSM (≥ 18 years old) who had either ≥2 male sex partners or unprotected anal sex with casual partners,or had been diagnosed with STI in the past 6 months.A self-completed tablet-based questionnaire was used to collect the information about MSM's socio-demographic characteristics,sexual behaviors and blood donation history.Results A total of 603 MSM were enrolled in our study,including 302 in Guangzhou,152 in Shenzhen and 149 in Wuxi,with a mean age of 27.9 years (SD=7.8).Overall,29.2％ (176/603) of the MSM reported a history of blood donation,and 33.1％ (100/302) in Guangzhou,27.6％ (42/152) in Shenzhen and 22.8％ (34/149) in Wuxi,the differences were not significant (x2=6.421,P=0.093).Multivariate logistic regression analysis indicated that MSM had ever tested for HIV for ≥2 times in the past 12 months (vs.MSM tested for HIV one time,aOR=1.49,95％CI:1.08-2.19) or who had ever used gay dating app (vs.MSM who not used gay dating app,aOR=2.13,95％CI:1.12-4.44) were more likely to donate blood.Conclusions Blood donation was common in MSM in China.Health education about blood donation in MSM should be strengthened to ensure the blood safety.

Evaluation of left atrial appendage functions using multiple parameters by transesophageal echocardiography / 中华超声影像学杂志

Objective To discuss the feasibility and accuracy of left atrial appendage (LAA)ejection fraction by real-time 3 dimensional imaging (3D-EF),and tissue velocity of the LAA wall by tissue Doppler imaging (TDI)via transesophageal echocardiography (TEE)in assessing LAA functions.Methods A total number of 76 patients with atrial fibrillation (AF)were included in the study consecutively and underwent TEE for LAA investigations.3D-EF,fractional area change by 2 dimensional imaging (2D-FAC),peak emptying velocity (PEV),LAA tissue velocity by TDI at the mid-portion of lateral wall (TDI-L),mid-portion of septal wall (TDI-S)and the apical tip (TDI-A)were calculated.Results Statistic analysis showed the following results:1 )2D-FAC,3D-EF,PEV,TDI-L,TDI-S and TDI-A were all significantly higher in patients with sinus rhythm than those with AF during the TEE examinations (all P <0.05),and significantly higher in patients without spontaneous echo contrast (SEC)than those who had SEC (all P <0.05);2)The results of 3D-EF showed a good correlation with 2D-FAC (r=0.727,P =0.000),and their correlations with PEV were similar (2D-FAC and PEV:r =0.685;3D-EF and PEV:r =0.632,both P =0.000);3)TDI-A [(14.95±4.63)cm/s]were significantly higher than TDI-L [(12.62±3.96)cm/s]and TDI-S [(12.68±3.59)cm/s](both P =0.000).The correlations of TDI-A with PEV,2D-FAC and 3D-EF were all marked higher than those of TDI-L and TDI-S (with PEV:r=0.840 vs r=0.564,r=0.524;with 2D-FAC:r=0.701 vs r=0.486,r=0.504;with 3D-EF:r=0.753 vs r=0.493,r=0.522,all P <0.05). Conclusions 3D TEE is feasible and reliable in assessing LAA emptying function.The best location for LAA tissue velocity evaluation is the apical tip.

Studies on immune-enhancing activity of polysaccharides from Borojoa sorbilis cuter / 中国免疫学杂志

Objective:Studies on the immune-enhancing activity of Polysaccharides from the fruits of Borojoa sorbilis cuter ( polysaccharides BSCP) in vivo.Methods:54 male BALB/c mice were randomly divided into six groups.The immune suppression mice in the three experimental groups,which were induced by cyclophosphamide ( CY) at 80 mg/kg/d via intraperitoneal injection, were perfused with 100,200,400 mg/kg/d BSCP for 30 d.The effect of BSCP on cellular immune function,humoral immune function and mononuclear macrophage function were measured.Results:CY-treated mice showed a significant decrease in immune function( P<0.05),humoral immune function(P<0.01) and mononuclear macrophage function(P<0.01).The administration of BSCP was able to overcome the CY-induced immunosuppression,treatment with BSCP-L,BSCP-M and BSCP-H groups significantly enhanced the cellular immune function( each was P<0.05 ) and mononuclear macrophage function ( each was P<0.05 ) , and treatment with BSCP-M and BSCP-H significantly enhanced humoral immune function(each was P<0.01).Conclusion:BSCP could significantly increase immune responses and reduce the side effects of CY in immune system.Therefore,the BSCP could be an immunomodulatory agent.

The epidemiological analysis of patients in pre-hospital medical care in large and medium-sized cities in China / 中华急诊医学杂志

Objective To investigate the epidemiological information of patients in pre-hospital medical care for our large and medium-sized cities and probe the patients' characteristic. Method The data in 2008 were exported from the computer databases of 8 large and medium-sized cities' emergency medical centers in our country.The thorough records of data were conducted to statistical analysis. Results ( 1 ) The scheduling time, running time, rescue time, returning time, total time and service radius in the pre-hospital medical care group were 2.16± 1.10(min), 14.01 ±6.82(min), 12.12±5.96(min), 14.08± 6.85(min), 42.34± 20.21(min)and 8.50±4.18(km), and the above parameter in the non-death group were 2.19 ± 1.13(min), 14.15 ± 7.14(min),11.60±6.72(min), 14.92 ±6.89(min), 41.86± 19.53(minutes) and 8.63±4.31(Km), and the above parameter in the death group were 2.10± 1.08(min), 13.68 ± 7.14(min), 25.25 ± 12.34(min), 13.75±6.48(min), 54.74 ± 25.47(min) and 7.86± 3.91(Km), and the above parameter in the non-sudden cardiac death group were2.09± 1.03(min), 13.58±6.78(min), 25.53± 12.34(min), 13.60± 6.54(min), 53.79±23.77(min) and 7.67 ± 3.86(Km), and the above parameter in the sudden cardiac death group were 2.12 ±1.02(min), 14.10±7.05(min), 24.79± 12.08(min), 13.79±6.61(min), 54. 80 ± 25. 36( min) and 7.90±3.92(Km) respectively. The scheduling time, running time, returning time and service radius in the death group were less than those of the non-death group, but the rescue time and total time of the former were more than those of the latter respectively ( P ＜ 0.05 or P ＜ 0. 001 ). The scheduling time and returning time didn' t have significant difference between the sudden cardiac death group and the non-sudden cardiac death group respectively ( P ＞ 0.05), but the running time, total time and service radius of the sudden cardiac death group were more than those of the non-sudden cardiac death group, and the rescue time of the former was less than that of the latter respectively ( P ＜ 0.05 or P ＜ 0.001 ). (2)The patients' amount in pre-hospital medical care group, the non-death group, the death group, the non-sudden cardiac death group and the sudden cardiac death group were at most in first quarter, and the least time slice of patients' amount were 4:00～ 6:00, 4:00～6:00, 4:00～ 6:00, 22:00～ 24:00, 2:00～4:00 respectively, and the most time slice of patients' amount were 20:00～ 22:00, 20:00～22:00, 8:00～ 10:00, 2:00 ～ 4:00, 8:00 ～ 10:00 respectively. (3)In 241 876 cases of pre-hospital medical care group, the patients' amount of trauma was at most, whose age grades was by far among21 ～50, and the others in sequence were nervous system, circulatory system, other group, digestive system, respiratory system and poisoning group respectively, whose age grades in nervous system, circulatory system and respiratory system was by far above 51, especially above 70. The patients' age grades in other group and digestive system had two climax age groups, which the one was 21 ～ 30, and the other was above 70. The patients' age grades in poisoning group was by far among 21 ～ 50, which the patients' amount of acute alcoholism was at the most. (4) In 12 568 cases of death group, the death amount of circulatory system, other group, respiratory system, nervous system and digestive system ranked at the lst,2nd,4th,5th 8th respectively, whose age grades was by far above 51, especially above 70,and the patients' amount of sudden cardiac death was at the most in the death amount of circulatory system. The death amount of trauma and poisoning group ranked at the 3rd, 6th respectively, whose age grades was by far among 21 ～ 50. (5)The total amount, the death amount and the sudden cardiac death amount of male patients were more than those of female patients. (6)The percentage of the death group to the pre-hospital medical care group was 5.20%, and the percentage of the sudden cardiac death group to the pre-hospital medical care group was 1.29%,and the percentage of the sudden cardiac death group to the death group was 24.87 %, and the percentage of the sudden cardiac death group to the circulatory system group was 67.33 %. Conclusions ( 1 )The trauma and the sudden cardiac death are the overriding reason of disease and the overriding reason of death in our large and medium-sized cities respectively. (2) It is very important to cut the death rate of the middle-old age patients by strengthening prevention and cure of cardiovascular and cerebrovascular diseases, discerning the critical illness early and improving the level of pre-hospital medical care. (3)It is a strong method to decrease the total amount and the death amount of the trauma, especially in traffic accident, by strengthening safety in production, observing traffic regulation and enhancing the legal awareness.

Definition of severe coronary artery stenosis in patients with coronary artery disease with two-dimensional global longitudinal strain / 中国医学影像技术

Objective To investigate the value of global longitudinal strain (GLS) in detecting severe coronary artery stenosis (SCAS) in patients with coronary artery disease. Methods Fourty-two patients with SCAS confirmed with coronary arteriongraphy (CAG) underwent two-dimensional strain echocardiography. GLS, wall motion score index (WMSI) and left ventricular ejection fraction (LVEF) were obtained. Taking CAG as gold standard, the sensitivity, specificity and areas under the ROC curve (AUC) of definition of SCAS with GLS, WMSI and LVEF were calculated, respectively. Fifteen healthy volunteers were recruited as control. Results ①Definition of one or more branches with severe stenosis: The sensitivity and specificity was 77.51% and 100% with GLS of -17.50% as a cutoff value, 70.01% and 100% with WMSI of 1.00, and 57.51% and 100% with LVEF of 59.21%. ②Definition of two or more than two branches with severe stenosis: The sensitivity and specificity was 62.52% and 80.81% with GLS of -11.05% as a cutoff value, 56.22% and 65.31% with WMSI of 1.60 and 56.21% and 65.42% with LVEF of 54.31%. ③The correlation coefficient was 0.78 between GLS and LVEF, and -0.82 between WMSI and LVEF. The AUC of detecting one or more branch with severe stenosis with GLS, WMIS and LVEF was 0.87, 0.80 and 0.78, respectively, and AUC of GLS was more than that of LVEF (P＜0.01). AUC of detecting two or more than two branches with severe stenosis with GLS, WMIS and LVEF was 0.76, 0.64 and 0.64, AUC of GLS was more than that of LVEF and WMSI (all P＜0.01). Conclusion GLS can be used in detecting SCAS, and the value of GLS is better than that of WMIS and LVEF.

Pro-inflammatory effect of transforming growth factor β1 in rat peritoneal mesothelial cells / 中华肾脏病杂志

Objective To investigate the pro-inflammatory effect of transforming growth factor β1 (TGF-β1) in rat peritoneal mesothelial cells (RPMCs) and its machanism. Methods TGF-β1-induced RPMCs model in vitro was established, and the expression of MCP-1 in the TGF-β1-induced RPMCs was observed. The intervention of Smad7 on the expression of MCP-1 and p38 signal proteins induced by TGF-β1 in RPMCs was explored as well as the intervention of p38 inhibitor SB203580 on the expression of MCP-1 induced by TGF-β1 in RPMCs. Results TGF-β1 could stimulate MCP-1 expression in RPMCs. Compared with control group, MCP-1 mRNA levels were significantly increased after 3 h treatment with TGF-β1 (P<0.05), peak MCP-1 induction occurred at 6 h (P<0.01), and the stimulatory effect of TGF-β1 persisted through 24 h (P<0.05). MCP-1 protein levels were significantly increased after 6 h treatment with TGF-β1(P<0.05), peak MCP-1 induction occurred at 48 h(P<0.01). Over-expressed Smad7 and p38 inhibitor could reduce the expression of MCP-1 induced by TGF-β1 (P<0.05). TGF-β1 could activate p38 signaling pathway, but over-expressed Smad7 could inhibit this role of TGF-β1. Compared with control group, the expression level of p-p38 was increased in TGF-β1-stimulated group. Compared with TGF-β1-stimulated group, the expression level of p-p38 was reduced in Smad7 gene transfer group. Conclusions TGF-β1-induced MCP-1 expression in rat peritoneal mesothelial cells is p38MAPK dependent.

Primary exploration on application of virtual classroom in general education programs / 中华医学教育探索杂志

In order to strengthen the education for university students’all-round devel-opment,and to improve the quality of teaching,Shantou University,by making good use of higher education resources,built a digital campus consisting of virtual classrooms based on advantage of computer and Internet network environment,and plenty of general education programs were carried out.The teaching practice showed that virtual classroom,as a network platform,played an important role in general education programs.

Functions of New Medical Teaching Mode on Innovative Talents Training / 中华医学教育探索杂志

The article aimed to explore the implementation of systemic integrated new clinical medical teaching mode and the functions of basic medicine specialty module teaching on innovative talents training.It showed that the implementation of systemic integrated new medical teaching mode was facilitated to build up a platform for the training of innovative talents.And the application of the integrated method to teaching was beneficial to develop the creative thinking of medical students.

Issues to be Paid Attention to in Teacher Training of New Medical Teaching Mode / 中华医学教育探索杂志

Teachers are principal parts in the innovation and implementation of teaching.Along with the deepening transformation of new medical teaching mode,higher demands have been set for the construction of teachership and for the education and training of teachers.The article gives an analysis on several issues that should be given attention to in the teacher training.

Effect of urinary IgG from nephrotic patients on expression of macrophage migration inhibitory factor in human proximal tubular epithelial cells / 中华肾脏病杂志

Objective To investigate the effect of purified urinary IgG from patients with minimal change nephrotic syndrome and membranous nephropathy on the expression of macrophage migration inhibitory factor (MIF) in human proximal tubular epithelial cells (HK-2). Methods Proteins were precipitated from urine with (NH4)2SO4, and urinary IgG was purified by protein G column chromatography. SDS-PAGE and Western blotting were performed to analyze the urinary IgG. HK-2 cells were incubated with urinary IgG (0,0.5,1.0,2.5,5.0,10.0 mg/ml) from either minimal change nephrotic or membranous nephropathy patients. The expression of MIF mRNA was assessed by RT-PCR, and MIF protein was assessed by Western blotting. Results SDS-PAGE showed that there were four bands, which were all IgG fractions confirmed by Western blotting. The urinary IgG up-regulated the expression of MIF mRNA and protein in HK-2 cells. The expression increased in a dose-dependent manner. The expression of MIF mRNA and protein in HK-2 cells increased significantly when they were incubated with urinary IgG from membranous nephropathy patients at 1mg/ml (P

The Application and Exploration of Discussion Method Applied to New Medical Teaching Mode / 中华医学教育探索杂志

The discussion method adequately applied to the teaching module of new medical teaching mode may promote the study of medical professional knowledge and cultivate the medical students' moral and cultural quality in the course of medical education,thus further optimizing the new medical teaching mode on a certain extent.

Regulation of osteopontin expression by its antisense RNA in renal epithelial cells / 中国病理生理杂志

AIM: To investigate the effect of antisense RNA on osteopontin (OPN) expression in renal tubular epithelial cells. METHODS: Cell clone expressing stably OPN antisense RNA was formed by transfering retroviral vector expressing OPN antisense RNA into renal tubular epithelial cells, NRK52E cells, using liposome, with cell clones transfected by empty vector and vector expressing OPN sense RNA as controls. Ribonuclease protection assay(RPA), Western Blot, ELISA and assay of OPN activity were performed to detect expression of OPN mRNA and protein in above clones cultured with or without epidermal growth factor(EGF). RESULTS: The antisense RNA was only expressed by antisense clone. Antisense clone, sense clone and empty clone all expressed OPN mRNA. EGF enhanced expression of OPN mRNA, but not OPN antisense RNA or OPN sense RNA in above clones. OPN protein was not expressed in antisense clone cultured with or without EGF and empty clone cultured without EGF, but was expressed in sense clone cultured with or without EGF and empty clone cultured with EGF. CONCLUSION: Antisense RNA can inhibit OPN protein expression by means of preventing OPN mRNA translation, but not inhibit OPN mRNA transcription in renal tubular epithelial cells.

Effect of MIF antisense oligonucleotides on expression of MIF in macrophages / 中国病理生理杂志

AIM: To investigate the effect of antisense oligonucleotides on expression of macrophage migration inhibitory factor (MIF) in macrophages. METHODS: MIF phosphorothioate oligonucleotides was designed and synthesized. The phosphorothioate antisense, sense and missense oligonucleotides of mouse MIF was transfected into macrophages, separately. After that, macrophages were incubated with LPS. Cell culture medium was collected for MIF protein detection by EIA. Cellular RNA was extracted and the expression of MIF mRNA was examined by RT-PCR analysis. RESULTS: LPS stimulation resulted in a specific time-dependent expression of MIF derived from macrophages. MIF mRNA and MIF protein level increased at 6 h and reached a plateau at 9-12 h after LPS stimulation. The macrophages treated with antisense oligonucleotides showed a significant decrease in MIF mRNA and MIF protein after LPS stimulation than those with LPS stimulation only and LPS plus sense or missense oligonucleotides (P