Objective To study the effect of applying food composition table and foodstuff substitution method on nutritional status in patients with diabetic nephropathy and undergoing peritoneal dialysis.Methods Forty patients with diabetic nephropathy,treated with peritoneal dialysis for over three months was included in this study.Under the guidance of the food composition table and foodstuff substitution method for six months,nutritional status was compared before and after treatment. Results There was a significant difference in HGS,triceps skin foId thickness(TSF),mid-arm circumference(MAC),midarm muscle circumference(MAMC),Hb,albumin(Alb),serum crcatinine after 6 mortths of intervention compared with those before intervention. Conclusions Food composition table and foodstuff substitution method can obviously impwve the nutritional status for patients with diabetic nephwpathy undergoing peritoneal dialysis and increase the patients'diet compliance as well.

In order to study the role played by infection in the occurrence and mechanism of negative nitrogen balance of the skeletal muscles in the early stage of scalding,37% TBSA full thickness scalding was inflicted on the back and one hind leg of rats and the protein catabolic rate in the soleus muscle of both the scalded and healthy legs was determined and the effects of endotoxin on the catabolic rate were observed.It was found that the protein catabolic rate was markedly accelerated in the scalded soleus 3 days after iujusy;and showed no significant changes in the healthy one,in which the protein catabolic rate was near or similar to that of the normal control.After 2 mg/kg of endotoxin was administered intraperitoneally.the findings were as follows:(1)Endotoxin could also accelerate the protein catabolic rate in the skeletal muscles;(2)The protein catabolic rate in the scalded soleus was not further increased and no summation effect of scalding and endotoxin on protein catabolism occurred.

Objective: To explore influence of nursing strategies based on evidence based medical theory on negative emotion and daily behavior in aged patients with coronary heart disease (CHD).Methods: A total of 88 CHD patients, who were treated in our department from Oct 2012 to Mar 2015, were selected.According to random number table, they were randomly and equally divided into routine nursing group and evidence based nursing group (received evidence based nursing based on routine nursing group).Unhealthy lifestyles, scores of self-rating anxiety scale (SAS) and self-rating depression scale (SDS), satisfaction for nursing and incidence rate of major adverse cardiovascular events (MACE) were measured and compared between two groups before and four months after intervention.Results: Compared with routine nursing group after four-week intervention, there were significant reductions in percentages of smoking (40.9% vs.22.7%), drinking (54.5% vs.38.6%), high-fat diet (43.2% vs.29.5%), physical inactivity (45.5% vs.25.0%) and overweight (52.3% vs.29.5%), scores of SAS [(50.4±3.3) scores vs.(45.8±3.2) scores] and SDS [(53.4±4.7) scores vs.(48.0±4.2) scores], and incidence rate of MACE (25.0% vs.11.4%), and significant rise in satisfaction for nursing (86.4% vs.97.7%) in evidence based nursing group (except for the P of overweight was <0.01, others were P<0.05 all).Conclusion: Evidence based nursing mode can improve unhealthy lifestyle and relieve negative emotional status in aged patients with coronary heart disease, which is worth extending in clinic.

BACKGROUND: As a practical model, physical activity can study the relationship between exercise and brain health In various ways, so as to better understand the promotion of exercise to the brain. In particular, how physical activity changes the structure and function of the hippocampus. OBJECTIVE: To review the researches on the physical activity, hippocampus and cognition, and to put forward the problems that need to be solved in current practice and research application. METHODS: PubMed database was retrieved for relevant studies published from 1995 to 2019. The keywords were “physical activity, exercise, hippocampus, cognition, neuroplasticity, adaptive, mechanisms” in English. The articles about the practical application and regulation mechanism for physical activity, hippocampus and cognition were included. RESULTS AND CONCLUSION: Totally 142 collected articles were searched firstly, the irrelevant and repetitive articles were excluded, and finally 89 eligible articles were included. The hippocampal dentate gyrus has the ability to regenerate nerves. Regular physical activity has a profound effect on the health of the body and brain, and can promote the nerve regeneration of hippocampus dentate gyrus, which can be increased by 2-3 times. This type of nerve mainly occurs in the dorsal side of dentate gyrus. In addition, exercise is also important for changes in neuronal maturation, morphology, and connectivity, and can alter the integration pathways of new neurons and increase the number of incoming neonatal and afferent cell synapses. The nerve regeneration of dentate gyrus is related to various factors induced by exercise. Exercise can promote changes in hippocampal synaptic plasticity by regulating excitatory and inhibitory neurotransmitters. Exercise-induced increase in serum brain derived neurotrophic factor levels may reduce hippocampal volume changes. The duration and intensity of exercise can differentially regulate cerebral blood flow, which in turn affect neuronal activity. Overexpression of vascular endothelial growth factor after long-term exercise can promote the proliferation of hippocampus and increase the hippocampal neurogenesis. Besides, exercise can also alter the synaptic plasticity and connectivity of adult newborn neurons, enhancing the integration of adult newborn neurons with existing hippocampal-enveloping pathways.

BACKGROUND: Autonomic nervous system plays a critical role in mediating cardiovascular system to adapt the metabolic demands of the muscle activity, and is an important presenter and supporter of physical activity. OBJECTIVE: To systematically analyze the possible effects of exercise intensity, exercise modality, and exercise duration on autonomic nervous system regulation during and after exercise through reviewing the related literature on the autonomic nervous system and heart rate variability assessment of autonomic nervous system, so as to understand the mechanisms that meet the metabolic needs of physical activities. METHODS: PubMed and CNKI databases were searched using the keywords of “autonomic nerves system, heart rate variability, exercise intensity, exercise modality, exercise duration” in English and Chinese, respectively. The studies published from 1999 to 2018 were retrieved. RESULTS AND CONCLUSION: Cardiac autonomic neuromodulation is evaluated by heart rate variability index based on RR interval changes. Heart rate variability is a sensitive marker that reflects the co-regulation of cardiac function in sympathetic nerves and parasympathetic (vagal) nerves in the autonomic nervous system. In addition, the heart rate variability signals contain a large amount of regulatory information, including cardiovascular system, hormones and body fluids. Therefore, the mechanism of exercise-induced cardiac autonomic nervous system adaptation is still unclear. Exercise intensity may be the main factor affecting the regulation of cardiac autonomic nervous system during and after exercise. The training parameters such as exercise form and duration, as well as their interaction effects, may affect the adaptive process of cardiac autonomic nervous system.

Objective To evaluate the role of μ opioid receptor exon 7 in the analgesic efficacy of endomorphin-2 in rats.Methods Twenty-four male Sprague-Dawley rats in which IT catheters were successfully implanted,weighing 220-260 g,were randomly divided into 3 groups (n =8 each) using a random number table:normal saline control group (group C),negative siRNA control group (group N-siRNA) andμ opioid receptor exon 7 siRNA group (group E7-siRNA).In C,N-siRNA and E7-siRNA groups,30μl saline solution,negative siRNA plasmid 20 μl + lipofectamine 2000 (10 μl),and μ opioid receptor siRNA plasmid 20μ1 + lipofectamine 2000 (10 μl) were intrathecally injected once a day for 3 consecutive days.The mechanical pain threshold was measured on 4th day (baseline).Endomorphin-2 10 μg was injected intrathecally at 1 h after measurement of the pain threshold.The mechanical pain threshold was measured at 5,20,40 and 60 min after endomorphin-2 injection,and the analgesic efficacy was calculated.Results There was no significant difference in the baseline pain threshold among the three groups.Compared with group C,no significant difference was found in the analgesic efficacy at each time point after endomorphin-2 injection in group N-siRNA,and the analgesic efficacy was significantly decreased at 5 and 20 min after endomorphin-2 injection in group E7-siRNA.Conclusion μ opioid receptor exon 7 is involved in the analgesic efficacy of endomorphin-2 in rats.

Objective To investigate the effect of mechanical ventilation on the pulmonary microvascular permeability in diabetic mice.Methods Sixty-four male C57/BL6 mice aged 10-12 months,weighing 20-25 g,were randomly assigned into 4 groups (n =16 each):control group (group C); mechanical ventilation group (group M); diabetes group (group D); diabetes mechanical ventilation group (group DM).Diabetes was induced by intraperitoneal streptozotocin 150 mg/kg (in citric acid buffer solution 0.1 mol/L) and confirmed by blood glucose level ＞ 16 mmol/L in groups D and DM,while the equal volume of citric acid buffer solution was given instead of streptozotocin in groups C and M.The animals were anesthetized with intraperitoneal pentobarbital 100 mg/kg and tracheostomized.The animals kept spontaneous breathing for 4 h in groups C and D,while the animals were mechanically ventilated for 4 h in groups M and DM.Eight mice from each group were randomly selected,arterial blood samples were obtained for blood gas analysis,and then the animals were sacrificed and the lung tissues were removed for determination of microscopic examination,W/D lung weight ratio and myeloperoxidase (MPO)activity.Four mice from each group were sacrificed and the pulmonary vascular permeability was determined.Four mice from each group were sacrificed and the primary pulmonary microvascular endothelial cells (PMVECs) were cultured in vitro and confirmed.The PMVEC permeability coefficient was measured using transendothelial [ 14 C ]BSA flux.Results Compared with group C,PaO2 was significantly decreased,and the MPO activity,pulmonary microvascular permeability and PMVECs permeability coefficient were significantly increased in groups M,D and DM,and W/D lung weight ratio was significantly increased in groups M and DM ( P ＜ 0.05).PaO2 was significantly lower,and W/D lung weight ratio,MPO activity,pulmonary microvascular permeability and PMVECs permeability coefficient were significantly higher in group DM than in group D ( P ＜ 0.05).Conclusion The mechanism by which mechanical ventilation induces lung injury may be related to the increase in the pulmonary microvascular permeability in diabetic mice.

Objective To explore the validity of simulative employment training course on enhancing the core competitiveness of university students.Method We investigate the students with simulative employment trainin, graduates and recruiters through interview, symposium and questionnaire survey. Results The comprehensive quality and occupational capacity of students that completed simulative employment training had been improved. In the simulative employment training course,98%students thought their interview skills had been promoted, 90%recruiters were satisfied with the students,95%graduates who had worked consider that the simulative employment training were helpful. Conclusions Simulative employment training is effective for enhancing the core competitiveness of university students.

Objective To evaluate the effect of dexmnedetomidine pretreatment on apoptosis in hippocampal neurons of rats undergoing one-lung ventilation (OLV).Methods Ninety adult male SpragueDawley rats,aged 10-11 months,weighing 260-300 g,were divided into 3 groups (n=30 each) using a random number table:two-lung ventilation (TLV) group,group OLV and dexmedetomidine pretreatment group (group D).Dexmedetomidine 25 μg/kg was injected intraperitoneally at 45 min before OLV in group D.After tracheal intubation,the animals were ventilated in volume-controlled mode.OLV was performed for 90 mnin followed by 30 min of TLV in OLV and D groups.TLV was performed for 120 min in group TLV.On 1,3 and 7 days after ventilation,6 rats in each group were selected,and Morris water maze test was carried out to evaluate the cognitive function.The swimming speed,time of staying at the target quadrant,and frequency of crossing the platform quadrant were recorded.Six rats in each group were selected immediately after ventilation and sacrificed,the hippocampi were removed for detection of cell apoptosis,and the apoptosis index was calculated.Immediately after ventilation and on 1,3 and 7 days after ventilation,6 rats in each group were selected and sacrificed,and the hippocampi were removed for determination of phosphorylated extracellular signal-regulated kinase 1/2 (pERK1/2),phosphorylated cyclic adenosine monophosphate response element-binding protein (pCREB),Bcl-2 and Bax expression.The ratio of Bcl-2 expression to Bax expression (Bcl-2/Bax ratio) was calculated.Results Compared with group TLV,the time of staying at the target quadrant was significantly shortened,the frequency of crossing the platform quadrant was decreased,the apoptosis index was increased,the expression of pERK1,pERK2,pCREB and Bcl-2 was down-regulated,the expression of Bax was up-regulated,and Bcl-2/Bax ratio was decreased in group OLV (P＜0.05 or 0.01).Compared with group OLV,the time of staying at the target quadrant was significantly prolonged,the frequency of crossing the platform quadrant was increased,the apoptosis index was decreased,the expression of pERK1,pERK2,pCREB and Bcl-2 was up-regulated,the expression of Bax was down-regulated,and Bcl-2/Bax ratio was increased in group D (P＜0.05 or 0.01).Conclusion Dexmedetomidine pretreatment decreases apoptosis in hippocampal neurons through activating ERK/CREB signaling pathway,thus reducing cognitive dysfunction of rats undergoing OLV.

Objective To explore the effects of penehyclidine hydrochloride (PHC) on the withdrawal syndrome and conditioned place preference(CPP) of morphine dependent rats. Methods ( 1 ) Forty-eight male SD rats were randomly assigned to 6 groups with one of 8 rats:morphine dependent group (MOR group) ,naloxone precipitated withdrawal group ( NAL group) ,PHC treatment groups ( PHC1,2,3 ) ,normal saline control group ( NS group). Subcutaneous injection of morphine in gradually increasing doses for 5 days (from 10 to 50 mg/kg ,two times daily) to establish the model of morphine physical dependent rats. The withdrawal syndrome was precipitated by naloxone (5 mg/kg,sc) and treated with PHC in various doses (0.5,1.0,1.5 mg/kg ,ip ) 30 min before haloxone-precipitated withdrawal. The body weight loss and withdrawal syndrome were observed respectively in 20 minutes. (2) 40 male SD rats were randomly assigned to 5 groups with one of 8 rats: morphine dependent group (MOR group) ,PHC treatment groups (PHC1 ,2,3 ) ,normal saline control group (NS group). The morphine conditioned place preference was induced by alternate subcutaneous injection of morphine for 7 days in rats ( 10mg/kg,once daily,8:00 AM) and saline( 16:00 PM). At d8,the rats were received the CPP test. The rats of PHC groups were treated with PHC (0.5,1.0,1.5 mg/kg , ip) prior to the CPP test, whereas the rats were treated with saline in MOR and NS group. Results (1) Theweight loss((8.53 ±l.20)g,(7.36±l.06)g,(5.40±1.79 ) g vs ( 12.63 ± 2.22 ) g, F = 83.16, P ＜ 0.01 ) and score precipitated withdrawal symptoms ( 25.36 ± 3.11,21.38±3.50,17.06±1.78 vs 31.69 ±2.76, F=256.56, P＜0.01)of morphine withdrawal rats was obviously alleviated by ip PHC in dose-related manner before naloxone-precipitated withdrawal. (2) There were significant differences in the times spent in the drug-paired side (gray area) between MOR and PHC groups( (529 ± 83 )s,(460 ± 107 ) s, (418 ± 97 ) s vs ( 643 ± 111 ) s, F = 13.22, P ＜ 0.01 ), and also in dose-related manner. Conclusion PHC could significantly inhibit the withdrawal syndrome and the expression of CPP on morphine dependent rats in a dose-dependent manner.