Objective To discuss the experience of self -perceived burden(SPB)in AIDS patients and to provide evidence for promoting physical and mental health.Methods Interviews were conducted among 10 AIDS patients,and the data were analyzed with the Colaizzi 's method.Results 3 themes from the experience of self -perceived burden in AIDS patients were identified:self -accusation and remorse,fear and insecurity,loss of dignity. Conclusion The research results showed feelings,difficulties and needs of patients in the process of disease.Nurses should think about the influence of SPB during the nursing intervention and evaluation.Nurses should alleviate the problems faced by patients in order to increase the health level,reduce the psychological pressure and increase the medication compliance of the patients in the long -term treatment.It can be used in clinical nursing.

Objective To study the effects of acute hypervolemi c hemodilution (AHH) on the coagulation and cardiac function in elderly surgical p atients. Method Sixty surgical patients, aged 60 to70, ASA Ⅰ~ Ⅱ, were randomly divided into three groups (n=20 for each group). 6% HES 50 0~1000ml was infused in a rate of 20ml/min during vasodilation with isoflurane i nhalation (group 1), nitroglycerin (group 2), or nicardipine (group3) with the a id of an intravenous injection pump. The blood coagulation and cardiac functions were observed during hemodilution. Results No significant diff erence was found among the three groups on cardiac function and coagulation func tion during 500ml 6% HES infusion. When the volume of infusion was over 1000ml, the parameters of cardiac function increased and those of coagulation decrease d significantly (P

Objective To examine the effects of different n-6/n-3 polyunsaturated fatty acid(PUFA) ratio in gap junctional intercellular communication (GJIC) in breast cancer cell lines. Methods After MCF-7(ER + )and MDA-MB-231(ER - )cells were treated respectively with n-6/n-3 polyunsaturated fatty acid ratio (1-10), Ki-67 expression in nuclear by immunocytochemistry, connexin 26 and 43 expression in cytoplasm and membrane by Western blotting, and GJIC by scrape-loading dye transfer method were performed. Results Immunocytochemistry showed that pure n-6 and 10∶1 n-6/n-3 increased Ki-67 expression (P

Objective To study the effects of different n-6/n-3 polyunsaturated fatty acid ratio on the lipid metabolic gene expression and MAPK activity in breast cancer cell lines. Methods MCF-7 and MDA-MB-231 cells were treated with n-6 polyunsaturated fatty acid, or n-3 polyunsaturated fatty acid, or the mixture of n-6/n-3 polyunsaturated fatty acid at ratio of 1∶1, 5∶1, 10∶1. The cell proliferation capacity was detected by MTT, the expression of lipid metabolic gene (COX-2, 5-LOX, PPAR? and PPAR?) were assayed by RT-PCR, MAPK phosphorylation levels were detected by Western blotting. Results COX-2 mRNA expression was not found in MCF-7 cells. As compared to normal control group, pure n-6 and 10∶1 n-6/n-3 promoted cell proliferation, up-regulated the expression of COX-2, 5-LOX, PPAR? and PPAR? mRNA , increased MAPK phosphorylation levels in MCF-7 and MDA-MB-231 cells (P

Objective To explore the clinical outcomes of vestibular rehabilitation therapy(VRT) in the treat‐ment of patients with balance disorders .Methods Seventy -six patients were diagnosed with vertigo based on the principle of single and double side targeted rehabilitation ,and were divided into four groups randomly .Group A of 29 cases received unilateral simple drug treatment only ,group B of 29 cases received unilateral drug treatmeat com‐bined with vestibular rehabilitation therapy ;bilateral simple drug treatment for the 9 cases in group C ,group D of 9 cases accepted bilateral drug treatment combined with vestibular rehabilitation therapy .Group A and C were the control groups while B and D were experimental groups .All cases were retrospectively analyzed to compare vestibu‐lar rehabilitation therapy combined with drugs treatment with the simple drug treatment group .Results The effects in all patients were better after treatment .The VSI scores four weeks after treatment in four groups were signifi‐cantly lower than that of before treatment .The BBS score after treatment of experimental groups were significantly higher than those of in the control groups .The Fukuda step experiment effects were better than the control group . All the above comparisons had a statistical significance(P< 0 .01) .Conclusion The clinical efficacy of normative vestibular rehabilitation exercise is satisfactory .

Objective To observe the effects of soybean isoflavone in attenuating trans fatty acids-induced athero-sclerosis in rats .Methods The rats were randomly divided into normal diet group、trans fatty acids group、soybean isoflavone group and trans fatty acids +soybean isoflavone group .Research kit was used to test the amounts of TG , HDL,LDL and IL-6,TNF-αin rats'blood.Bovine aortic endothelial cells were cultured and divided into control group,trans fatty acids group and trans fatty acids group +soybean isoflavone group .Western blot was performed to test the NF-κB phosphorylation ,as well as to determine ICAM-1 and VCAM-1 protein contents in bovine aortic endo-thelial cells.Results Compared with normal diet group ,the amounts of TG,LDL,IL-6,TNF-αincreased evidently (P<0.05), whereas the amounts of HDL decreased evidently (P<0.05) in the rats'blood of trans fatty acids group . After the soybean isoflavone intervened ,the amounts of TG,LDL,IL-6,TNF-αall decreased (P<0.01), meanwhile the amounts of HDL increased significantly (P<0.01).Soybean isoflavone inhibited NF-κB phosphorylation induced by trans fatty acids ( P<0.01) .The high expression of ICAM-1 and VCAM-1 induced by trans fatty acids was de-creased by soybean isoflavone when comparing with those in the control group ( P<0.01 ) .Conclusions Soybean isoflavone has a role in attenuating trans fatty acids trans fatty acids-induced atherosclerosis in rats .

The major developments in SPR technology are reviewed.The principle,parameters and configurations of SPR sensors are also introduced.Then the applications and future prospects of SPR sensor technology in biomedical engineering area are discussed.It is pointed out that the development of this technology tends to further improve the detection sensitivity and resolution,multi-channel detection,the array of micro-devices,etc.

Objective: To study the effect of different dietary fatty acid compositions on breast tumors induced by methyl-nitrosourea(MNU) in rats. Method: Female SD rats were fed diets containing 15% fat (wt/wt) in the experimental period. At age of 50d, rats were randomly assigned to 8 groups and each group was suldivided into tumor group and control group. The tumor group was given a single ip injection of MNU (50 mg/kg bw) and switched to one of 8 different diets containing following fatty acids: saturated fatty acid(SFA); monounsaturated fatty acid(MUFA); n-6 polyunsaturated fatty acid(PUFA); n-3 PUFA; 1∶1 n-6/n-3; 5∶1 n-6/n-3; 10∶1 n-6/n-3; 1∶2∶1 S/M/P(n-6/n-3 at 1∶1) for 18w. The control groups received the physiological saline only. The weight growth, mammary tumor incidence, tumor multiplicity, and tumor latency were observed. Results: Except the weight growth was arrested in rats fed on n-3 PUFA 6w later, there was no significant difference in weight growth among the other groups. Additionally, there was no mammary tumor occurrence in control groups, but in model groups, the incidence of mammary tumors in rats fed on SFA, MUFA, n-6 PUFA,5∶1 n-6/n-3, 10∶1 n-6/n-3 and 1∶2∶1 S/M/P diets was twice higher than that in rats fed on 1∶1 n-6/n-3 diet, although there was also no tumorin rats fed on n-3 PUFA diet. Moreover, tumor multiplicity in rats fed on 1∶1 n-6/n-3 diet was obviously decreased in comparison with those groups, and tumor latency was prolonged too. Conclusion: The different dietary fatty acid compositions can diversely influence MNU-induced breast tumors incidence in rats and 1∶1 n-6/n-3 has obvious inhibitory effect.

To investigate the effect of menopause on chemokine receptor CXCR2 expression on monocyte, 21 postmenopausal and 20 premenopausal women were enrolled in the present study. Fasting venous blood was collected, and plasma estrogen levels were determined with radio immunoassay. Monocytes were separated from peripheral blood with gelatin method. Protein expression of chemokine receptor was assayed with flow cytometry and mRNA concentration was measured with RT PCR. The results showed that the levels of plasma estrogen decreased, whereas protein and mRNA expression of chemokine receptor CXCR2 increased after menopause. The plasma estrogen levels were negatively correlated with chemokine receptor CXCR2 expression in monocytes. These data suggested that the changes in CXCR2 on monocytes might contribute to,at least partially,the increased risk of developing coronary heart disease associated with estrogen secretory changes.