ABSTRACT
Conditional forebrain-specific presenilin-1 and presenilin-2 double knockout mice (dKO mice) exhibit several neurodegenerative phenotypes of Alzheimer's disease (AD) pathology, such as tau hyperphosphorylation, neuron loss, forebrain cortical shrinkage and memory impairment. By using capillary electrophoresis assay, monoamine neurotransmitters in forebrain cortex, hippocampus and other forebrain region of dKO mice aged at 6, 9 and 12 months were measured to illustrate the relationship among presenilins function deficiency, neurodegenerative phenotypes and monoamine neurotransmitters. Data showed that levels of monoamine neurotransmitters in forebrain cortex of dKO mice were significantly decreased at 6 months when compared to controls, while as mice getting older, levels of monoamine neurotransmitters increased to that of controls, or even higher. In hippocampus, 5-hydroxytryptamin and epinephrine in dKO mice had a significant increase at 6 months, followed with a significant increase of each monoamine neurotransmitter at 12 months age. In other forebrain region, 5-hydroxytryptamin and dopamine had a similar level between control and dKO mice at 6 and 9 months but a significant decrease at 12 months; however, level of norepinephrine and epinephrine were significantly decreased at 6 and 12 months except epinephrine of 6 months. These results demonstrated that knockout of presenilins genes could lead to the variation of monoamine neurotransmitters, and the variation profiles were different among forebrain cortex, hippocampus and other forebrain region. However, whether presenilins deficiency caused the variation of monoamine neurotransmitter directly or not, and how about the effects of variation of monoamine neurotransmitters on AD-like pathology need to be further analyzed.
ABSTRACT
Objective To observe the effect of volume resuscitation on the early grafted kidney function in opration.Methods 909 cases were divided into five groups according to the volume resuscitation in opration:group A:
ABSTRACT
Objective To investigate the effects of continuous end-eiastoloc volume index(CEDVI) adjusted by right venteicular ejection fraction(RVEF) in using for volume resuscitation of critically ill patients.Methods 51 critically ill patients who Swan-Ganz volume pulmonary artery catheters were inserted in via right internal jugular or subclavian vein underwent fluid therapy.Fluid was infused according to the relationship of RVEF and CEDVI.And the relationship of RVEF and CEDVI was that when RVEF was 0.2,0.3,0.35,0.4 and 0.5,respectively,CEDVI is 200～400ml/m~2,150～180ml/m~2,125～150ml/m~2,100～120ml/m~2,50～60ml/m~2 respectively.When RVEF is
ABSTRACT
Objective To develop and manufacture new-type dermabrasive cosmetic instrument and investigate its clinical value.Methods WDJ-CP-I dermabrasive cosmetic instrument was developed by using medical brushless magdyno and then was applied to 296 cases.Results WDJ-CP-I dermabrasive cosmetic instrument had such advantages as small volume,lower noise,long duration of life,simple operation,high-temperature & high-pressure sterilization,safety,high dermabrasive rate,ect.Conclusion WDJ-CP-I dermabrasive cosmetic instrument is a good tool for dermabrasion and is worth popularizing.