Objective To explore the effects and mechanism of cigarette smoke extract (CSE) on the proliferation of air?way smooth muscle cells (ASMCs) and the expression of CCAAT/enhancer-binding protein (CEBPα) and calreticulin. Meth?ods (1) The ASMCs were stimulated with different concentrations of CSE for twenty-four hours. According to the concentra?tions of CSE,the cells were divided into control group, 2.5%CSE group, 5%CSE group and 10%CSE group. The prolifera?tion of ASMCs was measured by MTT colrimetric method. The CEBPαmRNA was analyzed by RT-PCR. Western bloting as?say was performed to detect the levels of CRT and CEBPαprotein. (2) In 10%CSE group, transfection of the siRNA respec?tively for negative control or calreticulin was performed in accordance with instructions. The cell proliferation and the expres?sion of calreticulin and CEBPαwere compared in negative control siRNA group and calreticulin siRNA group. Results (1) With the increasing of the concentrations of CSE, the protein expression of CEBPαdecreased gradually (P<0.05), while the proliferation of ASMCs and the protein expression of calreticulin increased (P<0.05), but the expression of CEBPαmRNA in ASMCs showed no significant difference in groups with different concentrations of CSE (P>0.05). (2) Under the 10%CSE, the expression of CEBPαwas significantly higher in CRT siRNA group than that in negative control group (P<0.05),but the cell proliferation and CRT were significantly lower in the calreticulin siRNA group than those in negative control siRNA group (P<0.05). Conclusion The CSE exposure contributes to the expression of calreticulin protein,and then inhibits the translation of CEBPαmRNA,thus promotes the proliferation of ASMCs.

Objective:To examine the changes of mimecan protein expression in development of atherosclerosis induced by sinoaortic denervation,and to explore the effects of mimecan knock down on the proliferation and migration of vascular smooth muscle cells.Methods:The animals were randomly divided into a sham group and a model group (n=8 in each group).The rat model of blood pressure variability was established by sinoaortic denervation,and the hemodynamic indexes were recorded 20 weeks after the surgery to confirm the success of the model.The thoracic aorta was excised and stained with immunohistochemistry to observe the pathological changes of smooth muscle tissues and the changes of mimecan expression.The mice vascular smooth muscle cells were isolated,and which were treated with mimecan siRNA to knock down the mimecan expression,The cell proliferation was observed by 5-ethynyl-2'-deoxyuridine (Edu) in corporation test and the changes of cell migration was observed by wound healing test.Results:Twenty weeks after sinoaortic denervation,the blood pressure variability in the model group was significantly increased compared with that in the sham group,suggesting the model was successfully established.In addition,the increased blood pressure variability in the model group promoted the proliferation and migration of the vascular smooth muscle cells in thoracic aorta,while the expression of mimecan protein was significantly decreased.In in vitro assays,the knock down of mimecan in mice vascular smooth muscle cells could promote the cell proliferation and migration.Conclusion:Mimecan plays a protective role in the development of sinoaortic denervation induced atherosclerosis through amechanism involving suppression of the proliferation and migration of vascular smooth muscle cells.

Objective:The three-step model of ″new nurse, professional group nurse, and clinical nurse specialist″ combines the clinical professional nursing group to promote the development of clinical nurse research capabilities and the construction of nursing research teams.Methods:A three-step model of ″new nurse, professional group nurse, and clinical nurse specialist″ was established by combining the individual development of nurses and team collaboration. Taking the clinical professional nursing group as the entry point, clinical work of the clinical professional nursing group, quality control of clinical professional nursing groups, quality control circle activities, nurse career development, and nursing research team building were integrated to implement the three-step model, thereby driving the development of clinical nurses′ research capacity and nursing research team construction. The methods of the three-step model combined with clinical professional nursing groups to promote the development of clinical nurse research capabilities and the construction of nursing research teams were implemented. The following were the eleven specific management measures: Improving the structure and echelon construction of clinical professional nursing groups, developing research plans and goals from four dimensions (departments, clinical professional nursing groups, individual nurses, and new nurses), carrying out nursing research training to clinical professional nursing groups that emphasizes both theriotical methods and practical operations, organizing nursing research projects by clinical professional nursing groups, promoting the innovation of work towards digitization and informatization, promoting clinical professional nursing groups to conduct interventional studies, launching quality control circle projects by clinical professional nursing groups, participating in and hosting nursing rounds by clinical professional nursing groups, improving the clinical technical problem by The clinical professional nursing groups, encouraging collaboration and communication between clinical professional nursing groups and physicians, facilitating the cross-integration and development of clinical professional nursing groups.Results:The three-step model has promoted the growth of nurses from the route of ″new nurse, professional group nurse, and clinical nurse specialist″, built a nursing research team and talent echelon based on the breakthrough of clinical professional nursing groups, and solved clinical practical problems and produced scientific research results.Conclusions:Implementing the three-step model combined with clinical professional nursing groups to promote the development of clinical nurse research capabilities and the construction of nursing research teams can promote the collaborative development of clinical nursing research and clinical nursing work.

Background: The present investigation explored the therapeutic actions of oleuropein along with the possible signaling pathway involved in attenuating neuropathic pain in chronic constriction injury (CCI) and vincristine-induced neuropathic pain in male rats. Methods: Four loose ligatures were placed around the sciatic nerve to induce CCI, and vincristine (50 μg/kg) was injected for 10 days to develop neuropathic pain.The development of cold allodynia, mechanical allodynia, and mechanical hyperalgesia was assessed using different pain-related behavioral tests. The levels of H2S, cystathionine-γ-lyase (CSE), cystathionine-β-synthase (CBS), orexin, and nuclear factor erythroid-2-related factor 2 (Nrf2) were measured in the sciatic nerve. Results: Treatment with oleuropein for 14 days led to significant amelioration of behavioral manifestations of neuropathic pain in two pain models. Moreover, oleuropein restored both CCI and vincristine-induced decreases in H2S, CSE, CBS, orexin, and Nrf2 levels. Co-administration of suvorexant, an orexin receptor antagonist, significantly counteracted the pain-attenuating actions of oleuropein and Nrf2 levels without modulating H2S, CSE and CBS. Conclusions Oleuropein has therapeutic potential to attenuate the pain manifestations in CCI and vincristine-induced neuropathic pain, possibly by restoring the CSE, CBS, and H2S, which may subsequently increase the expression of orexin and Nrf2 to ameliorate behavioral manifestations of pain.

Background: The present investigation explored the therapeutic actions of oleuropein along with the possible signaling pathway involved in attenuating neuropathic pain in chronic constriction injury (CCI) and vincristine-induced neuropathic pain in male rats. Methods: Four loose ligatures were placed around the sciatic nerve to induce CCI, and vincristine (50 μg/kg) was injected for 10 days to develop neuropathic pain.The development of cold allodynia, mechanical allodynia, and mechanical hyperalgesia was assessed using different pain-related behavioral tests. The levels of H2S, cystathionine-γ-lyase (CSE), cystathionine-β-synthase (CBS), orexin, and nuclear factor erythroid-2-related factor 2 (Nrf2) were measured in the sciatic nerve. Results: Treatment with oleuropein for 14 days led to significant amelioration of behavioral manifestations of neuropathic pain in two pain models. Moreover, oleuropein restored both CCI and vincristine-induced decreases in H2S, CSE, CBS, orexin, and Nrf2 levels. Co-administration of suvorexant, an orexin receptor antagonist, significantly counteracted the pain-attenuating actions of oleuropein and Nrf2 levels without modulating H2S, CSE and CBS. Conclusions Oleuropein has therapeutic potential to attenuate the pain manifestations in CCI and vincristine-induced neuropathic pain, possibly by restoring the CSE, CBS, and H2S, which may subsequently increase the expression of orexin and Nrf2 to ameliorate behavioral manifestations of pain.

Low back pain (LBP) is closely related to intervertebral disc degeneration (IDD) , spinal canal stenosis, intervertebral disc herniation, osteoarthritis of intervertebral facet joints, ligament and muscle lesions, among which IDD is the key factor causing low back pain. Emerging evidence suggests that a large number of pro-inflammatory cytokines are produced during IDD, and the inflammatory responses induced by these cytokines aggravate the occurrence and development of degeneration. At the molecular level, the mechanism of regulating intervertebral disc metabolism based on signal pathway has become a research hotspot, but the specific pathway mechanism is still unclear. In this paper, according to the crosstalk of NF-κB, TGF-β, MAPK, Wnt/β-catenin, PI3K/AKT/mTOR and other signal pathways, the positive and negative feedback effects of signal pathways on the inflammatory response during disc degeneration will be discussed. To elucidate the pro-inflammatory effects of NF-κB, anti-inflammatory effects of TGF-β and MAPK as well as the potential mechanisms of other pathways, we analyze the internal relationship between the mechanism of IDD and the signal pathway transduction, in order to provide new ideas for the treatment of IDD.

Objective:To investigate the central mechanism of moxibustion in treating chronic inflammatory visceral pain(CIVP)and its analgesic effect from the perspective of the p38 mitogen-activated protein kinase(MAPK)/Ets-like transcription factor 1(ELK1)signaling pathway in the spinal cord. Methods:Clean-grade male Sprague-Dawley rats were randomly divided into a normal group,a model group,a herb-partitioned moxibustion(HPM)group,a sham-HPM group,a p38 MAPK inhibitor group,and a dimethyl sulfoxide(DMSO)group.CIVP rat models were prepared using an enema mixture of 2,4,6-trinitrobenzene sulfonic acid solution and 50%ethanol.The HPM group was treated with HPM;the sham-HPM group was treated the same as the HPM group,but the moxa cones were not ignited;rats in the p38 MAPK inhibitor group received L5-L6 intrathecal injection of p38 MAPK inhibitor(SB203580);rats in the DMSO group received L5-L6 intrathecal injection of 2%DMSO.Abdominal withdrawal reflex(AWR),mechanical withdrawal threshold(MWT),and thermal withdrawal latency(TWL)were used to observe pain-related behaviors in each group.Hematoxylin-eosin staining was used to observe the morphological changes in rat colon tissue.Western blotting and real-time quantitative reverse-transcription polymerase chain reaction were used to detect the phosphorylated protein and mRNA expression of apoptosis signal-regulating kinase 1(ASK1),MAPK kinase(MKK)3/6,p38 MAPK,ELK1,and mitogen and stress-activated protein kinase 1(MSK1)in the spinal cord. Results:Compared with the normal group,CIVP rats had severe colonic inflammatory injuries,and the pathological injury scores increased significantly,along with increased AWR scores under different colorectal distension(CRD)stimulation pressures and decreased MWT and TWL;the mRNA and phosphorylated protein expression of p38 MAPK,ELK1,MSK1,ASK1,MKK3,and MKK6 all increased in the spinal cord(P<0.01).After HPM treatment,the colon injuries were repaired,and the pathological injury scores decreased;under different CRD stimulation pressures,the AWR scores decreased,and the MWT and TWL increased;the mRNA and phosphorylated protein expression of p38 MAPK,ELK1,ASK1,and MKK3 in the spinal cord also decreased,with statistically significant differences compared with the model group and the sham-HPM group(P<0.01).There were no significant differences in the above indicators between the HPM group and the p38 MAPK inhibitor group(P>0.05),and the same was true regarding the comparisons between the model group and the DMSO group. Conclusion:HPM exerted analgesic effects via downregulating the mRNA and phosphorylated protein expression of ASK1,MKK3,p38 MAPK,and ELK1 in the spinal cord of CIVP rats.The inhibition of spinal p38 MAPK/ELK1 signaling pathway activation may be one of the mechanisms by which HPM relieves pain in CIVP.

Objective To assess the value of cardiac magnetic resonance (CMR) imaging in left ventricular structure and function in patients with end stage renal disease (ESRD).Methods Twenty-five patients with ESRD and 10 healthy subjects underwent CMR.Left ventricular end diastolic volume(EDV),end-diastolic diameter(EDD),end-systolic volume(ESV),end-systolic diameter(ESD),stroke volume(SV),ejection fraction(EF),LVM and interventricular septum (IVS) thickness were measured and compared.The parameters from CMR and 2DTTE were compared.Results The EF in patients with ESRD was significantly lower than that in controls (P＜0.001),while ESV,ESD,IVS and LVM were respectively higher than these in controls (P＜0.05).There was no significant difference (P＞0.05) in ESV between CMR and 2DTTE,but EF of CMR was significantly higher than this of 2DTTE (P＜0.05).There was no significant difference (P =0.296) in left ventricular systolic functional category.Bland-Altman plots showed a good agreement between the two methods.Conclusion CMR is a helpful tool to assess left ventricular structure and function in patients with ESRD.

Objective To systematically review the predictive factors associated with reversibility of post-transplantation diabetes mellitus in adults using Meta-analysis,and to provide a theoretical basis for clinical prevention and treatment of diabetes after transplantation.Methods Pub Med,Web of Science,Cochrane Library (Issue 5,2017),CNKI,VIP and WanFang Data were searched from inception until May 2017.Two authors independently assessed the trials for inclusion and extracted the data.Discrepancies were resolved in consultation with a third reviewer.Publication biases were evaluated,and the Meta-analyses were conducted with RevMan5.3.Results A total of 7 studies were analyzed which involved 979 adults.Metaanalysis showed the following significant predictive factors:male (OR =1.73,95％ CI 1.19 to 2.50,P ＜0.05),advanced age (MD =1.73,95％ CI 0.07 to 10.39,P =0.05),high FPG before transplantation (MD=5.66,95％CI 0.11 to 11.31,P=0.05),hepatitis C virus (HCV) infection (OR=1.52,95％CI 1.08 to 2.14,P ＜ 0.05),high frequency of combination therapy with MMF (OR =0.26,95％ CI 0.11 to 0.61,P ＜ 0.05),and short time before development of PTDM (MD =-19.08,95％ CI-37.08 to -1.07,P ＜ 0.05).There was no correlation with preoperative BMI,family history of diabetes and acute rejection.Conclusion The study showed that male,advanced age,high FPG before transplantation,hepatitis C virus infection,high frequency combination therapy with MMF,short time before development of posttransplantation diabetes mellitus were the predictive factors associated with reversibility of post-transplantation diabetes mellitus.

Objective To systematically review the effect of enteral nutrition via a naso-gastric (intestinal) tube (NG) vs a percutaneous endoscopic gastrostomy/jejunostomy (PEG/PEJ) after liver transplantation,and provide support for the selection of proper nutrition.Methods Pub Med,web of science,Cochrane Library (Jan,2018),CNKI,VIP and Wanfang Date were search until Jan,2018.Two authors independently assessed the trials for inclusion and extracted the data.Discrepancies were resolved in consultation with a third reviewer,about the research of retrospective study for the effects of enteral nutrition via NG vs PEG/PEJ after liver transplantation was performed and supplemented.Publication bias were evaluated,and Meta-analyses were conducted with RevMan5.3.Results 4 studies were collected,involving 430 patients.The Meta-analysis showed that starting time of enteral nutrition of PEG/PEJ was earlier than NG (MD =-1.77,95％ CI-1.83 to-1.70,P＜0.05).The average hospitalization time of PEG/PEJ was shorter than NG (MD=-2.88,95％CI-5.19 to-0.56,P＜0.05).The diarrhea incidence of PEG/PEJ was higher than NG (OR=1.66,95％CI 1.04 to 2.65,P＜0.05),and gastroesophageal reflux incidence of PEG/PEJ was lower than NG (OR=0.29,95％CI 0.12 to 0.66,P＜0.05).The gastric retention rate of PEG/PEJ was lower than NG (OR =0.26,95％ CI 0.14 to 0.41,P＜0.05).Dislocation incidence of PEG/PEJ was lower than NG (OR =0.06,95％CI 0.01 to 0.46,P＜0.05).The pneumonia incidence of PEG/PEJ tube was lower than NG (OR=0.59,95％CI 0.36 to 0.99,P＜0.05).There were no significant differences between PEG/PEJ and NG on indwelling time,occlusion,abdominal infection,acute renal insufficiency,and acute rejection reaction.Conclusion PEG/PEJ had earlier starting time of enteral nutrition,shorter hospitalization time,lower nutrition tube placement related complications such as gastric esophagus reflux,gastric retention,dislocation rate and lower incidence of pneumonia,but the incidence of diarrhea was higher.NG is the first choice after liver transplantation,and for patients with serious basic diseases,weak digestive function or digestive system disorders PEG/PEJ can be chosen.