1.Ultraviolet radiation can improve the biological activity of titanium surface.
Yun GUAN ; Heng WANG ; Wei TENG
Chinese Journal of Stomatology 2012;47(8):510-511
Animals
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Catalysis
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Cell Adhesion
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drug effects
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radiation effects
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Humans
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Hydrophobic and Hydrophilic Interactions
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Osseointegration
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drug effects
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radiation effects
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Osteoblasts
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cytology
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drug effects
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radiation effects
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Osteogenesis
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drug effects
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radiation effects
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Photochemical Processes
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Surface Properties
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radiation effects
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Time Factors
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Titanium
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chemistry
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pharmacology
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radiation effects
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Ultraviolet Rays
2.A review of patients′ expectations for health care and related factors
Jiaojiao ZHAO ; Liying GUAN ; Yun ZHU
Chinese Journal of Practical Nursing 2016;32(36):2868-2882
Patient′s expectation has been defined as the anticipation that given events were likely to occur during, or as an outcome of, health care. What people expect from their health care are potentially important in predicting patient satisfaction and dissatisfaction with their care, treatment and health outcomes. There was widespread recognition of the importance of evaluating services from consumer perspectives. In this article, domestic and foreign research in recent years, expectations status, significance and various influencing factors in relation to the expectations in processes of health care were summarized. Consumer evaluations of their health care are now an established component of quality assessment, planners need to understand the expectations underlying patients′views in order to interpret their feedback. Thus leading to improve patient satisfaction and the social evaluation of medical units.
4.Study on platelet-activating factor-induced apoptosis in neurons and NMDA signal pathway
Yun XU ; Lan WANG ; Dening GUAN
Journal of Clinical Neurology 2001;0(05):-
Objective To investigate whether N-methyl-D-aspartate(NMDA) signal pathway is involved in platelet-activating factor(PAF)-induced apoptosis in neurons.Methods Mice cortex neurons were treated by PAF in different dose for 24 hours or pretreated by a PAF receptor antagonist BN52021, an NMDA receptor antagonist MK801 and a nitric oxide synthase(NOS) inhibitor L-NAME for 30 min. Then the neurons were stained by propidium iodide(PI)/calcein AM and the images were taken by a digital camera on a fluorescent microscope. Neuron death ratio(%) was calculated. In the mean time, neuron NOS(nNOS) expression of the cells was detected by Western Blot method, as well as nNOS activity was measured by 3H radioimmunoassay.Results (1)Neuronal death increased after neurons were treated with 0.01, 0.1, 0.3 and 0.6 ?mol/L PAF 24 h. There were signifitantly changed in 0.3 ?mol/L and 0.6?mol/L comparing control. (2)PAF-induced neurotoxicity was prevented not only by BN5021, but also by MK-801 or L-NAME. (3)PAF enhanced nNOS expression and activity in neurons.Conclusion NMDA signal pathway is involved in platelet-activating factor-induced neurotoxicity.
5.PSD_(93) knockout decreased neurotoxity induced by pletelet activitaing factor
Yun XU ; Rong HUANG ; Dening GUAN
Journal of Clinical Neurology 1997;0(06):-
Objective To investigate whether PSD 93 reduce neurotoxity induced by platelet activating factor (PAF) and study on the mechanism of cell molecularbiology.Methods PAF treated the cultural cortex neurons in wild type and PSD 93 knockout mice and the cells were stained with PI/Calcein AM for apoptosis; neuronal viability was measured by MTT. The expression of PSD93 and PSD95 protein in neurons was tested by Western Blot.Results PSD 93 and PSD 95 expressed in wild type neurons and only PSD 95 expressed in PSD 93 knockout. Cortex neuronal apoptosis in PSD 93 knockout mice was lower then that in wild type ( P
6. Influence of nutritional status at birth on development of metabolic syndrome in adulthood: An advance
Academic Journal of Second Military Medical University 2010;31(2):196-199
Aging as a global problem is intensifying with the development of economy; reducing the chronic diseases in the elderly and improving the life quality of the whole population are a study focus of medical researchers of today. The changes of cells, tissues, and organs in adults are not reversible to different extents. Fetal origin hypothesis believes malnutrition early in life is closely associated with the metabolic syndrome in adults, and if measures is taken at early stage of life, it may reduce or avoid a series of disease in adults. This paper reviews the association of malnutrition at early stage of life with metabolic syndrome (obesity, hyperglycemia, hypertension, and hyperlipemia) in adults.
7.The expression difference of serum bilirubin and uric acid in carotid artery plaque formation of patients with ischemic cerebral vascular disease
Yun LUO ; Jingwei LI ; Hairong ZHU ; Dening GUAN ; Yun XU
Clinical Medicine of China 2010;26(9):943-945
Objective To investigate the possible roles of serum bilirubin and uric acid in the course of carotid artery intima thicken/plaque formation. Methods Patients with ischemic cerebral vascular disease were divided into the control group, intima thicken group and plaque formation group according to the carotid artery intimamedia thickness (IMT) examination by B-mode ultrasound. The serum bilirubin and uric acid were detected by Automatic Chemistry Analyzer. Results The serum level of uric acid of (391.22 ± 27.52) μmol/L in intima thicken group was significantly higher than that in the control group and plaque formation group((307.32 ± 13.68)μmol/L and (327.84 ± 17.96)μmol/L, P < 0.05). The serum level of indirect bilirubin and total bilirubin in plaque formation group was (10.96 ± 0.58) μmol/L and (15.91 ± 0.71) μmol/L respecitively, which were significantly lower than those in the control group ((15.09 ± 2.21) μmol/L and (20.59 ± 2.43) μmol/L,respectively) and the intima thicken group((15.09 ± 2.21) μmol/L and (20.59 ± 2.43) μmol/L, respectively) (Psignificantly lower than that of (5.70 ± 0.28) μmol/L in the control group(P < 0.05). Conclusions Bilirubin and uric acid play different roles in carotid artery plaque formation during different stage.
8.Application of German KTQ quality certification system in nursing quality management
Yun WANG ; Qingqing LIU ; Guan WANG ; Huaying HE
Modern Clinical Nursing 2016;15(7):62-65
Objective To discuss the application of Germany Cooperation for Transparency and Quality in Health Care (KTQ) quality certification system in the field of nursing management. Methods The Plan-Do-Check-Act (PDCA) from KTQ was used in the management of ward nursing quality. The post-interventional quality of basic nursing, critical nursing, health education, ward management, nursing safety and disinfection and isolation were compared and contrasted with the pre-interventional one. Result The quality of basic nursing, critical nursing, health education, ward management, nursing safety and disinfection and isolation were significantly improved after intervention with PDCA from KTQ (P<0.01). Conclusion The KTQ quality certification system can be applied to improve the nursing quality in the process of nursing management.
9.Effects of exogenous H2S on H2S concentration and cystathionine β-synthase expression in hippocampus in a rat model of vascular dementia
Mao TIAN ; Yun HUANG ; Yanjun DONG ; Yan XIAO ; Zhizhong GUAN
International Journal of Cerebrovascular Diseases 2016;24(12):1091-1095
Objective To investigate the effect of exogenous hydrogen sulfide (H 2 S) on H2 S concentration and cystathionine β-synthase (CBS) expression in hippocampus in a rat model of vascular dementia (VaD). Methods A rat model of VaD was induced by using the modified four -vessel occlusion. The rats were divided into sham operation, model, low -dose and high-dose NaHS groups using the random number table method. They were further redivided into one day, seven -day, and 30-day subgroups according to the time after modeling. After modeling respectively, NaHS 30 μmol/kg and 100 μmol/kg were injected intraperitoneally every day in the low -dose and high-dose NaHS groups. The normal saline was injected intraperitoneally every day in the sham operation group and the VaD model group. Morris water maze test was used to evaluate the learning and memory ability of the rats. The expression of CBS in hippocampus was detected by real-time fluorescent polymerase chain reaction. Western Blotting was used to detect expression of CBS protein in hippocampus. Results Morris water maze test showed that the escape latencies of the model group, low -dose and high-dose NaHS groups were prolonged significantly compared with the sham operation group (P <0.05); the times of crossing the platform were decreased significantly compared with the model group (P <0.05); and the escape latencies were shortened significantly in the low -dose and high-dose NaHS groups compared with the model group ( P <0.05). The H2 S content in hippocampus was decreased significantly in the model group, low -dose and high-dose NaHS groups compared with the sham operation group, but the low -dose and high-dose NaHS group was significantly higher than that in the model group (all P <0.05). The expression of CBS mRNA and protein in the model, low -dose and high-dose NaHS groups was significantly lower than that of the sham operation group (all P < 0.05), and there was no significant difference between the low -dose and high-dose NaHS groups and the model group. Conclusions Exogenous H2 S may improve the learning and memory ability of the VaD rats. It may be associated with the increased H2 S content in hippocampus. However, it has no effect on CBS expression.
10.L-carnitine inhibits eryptosis induced by uremic serum
Yun SUN ; Gang LIU ; Xuegang LI ; Yimin SHI ; Guangju GUAN
Chinese Journal of Pathophysiology 2015;(7):1324-1328
[ ABSTRACT] AIM: To investigate whether L-carnitine ( LC) inhibits the eryptosis effect of uremic serum on erythrocytes.METHODS:Erythrocyte suspension (2%) was cultured and divided into 3 groups in vitro: control group ( C group) , uremic serum group ( U group, 30%uremic serum) , and uremic serum+LC group ( L group, 30%uremic serum+200 μmol/L LC) .Erythrocytes were collected at 24 h and 48 h.Eryptosis ( phosphatidylserine expression repre-sents eryptosis) was estimated by flow cytometry with Annexin V staining.The content of reactive oxygen species ( ROS) was also detected.Glutathione ( GSH) was measured by ELISA.RESULTS:Eryptosis in C group was increased as the in-cubating time extended.Eryptosis in U group was higher than that in C group, while that in L group was lower than that in U group.Meanwhile, ROS content was higher and GSH was lower in U group than those in C group.ROS content was low-er and GSH was higher in L group than those in C group.CONCLUSION:LC inhibits uremic serum-induced eryptosis by decreasing ROS and increasing GSH, thus attenuating oxidative stress.