Aging is a biological process and state characterized by morphological change, hypofunction and metabolic disorder, often accompanied by severe degenerative diseases, including amyotrophy, atherosclerosis, neurodegeneration, and so on. Age-related diseases not only decrease the life quality of the elderly, but also impose great burden on family and society. As population aging, we are increasingly coming to realize that the longevity we want should be healthy aging but not simple increase of lifespan. By researching on the yeast, C. elegans, drosophila, mice and humans, we get to know the mechanisms of aging and methods for anti-aging, such as dietary restriction and use of anti-aging drugs like rapamycin. In this review, we summarized mainly the studies on mechanisms of aging and elaborate associated anti-aging strategies and underlying mechanisms.

ObjectiveTo analyze the relative influential factors of hearing rehabilitation of the deafened children with multichannel cochlear implant. Methods42 prelingually deafened children who accepted multichannel cochlear implant were evaluated with their hearing ability, hearing thresholds and talent level, while their family and usage of the multichannel cochlear were investigated. Results and ConclusionThe result shows that the factors influencing the hearing rehabilitation are the occupations of the parents, income of the family, the time between diagnosing deaf and the operation, the time after the cochlear implant operation and the talent level. The results of the logistic regression show that the deafened children can gain their hearing developing rapidly if they living in a family with high income, their mothers have accepted more education, and they accepted longer time of continuing hearing-aid, etc.

ObjectiveTo analyze the relative influential factors of hearing rehabilitation of the deafened children with multichannel cochlear implant. Methods42 prelingually deafened children who accepted multichannel cochlear implant were evaluated with their hearing ability, hearing thresholds and talent level, while their family and usage of the multichannel cochlear were investigated. Results and ConclusionThe result shows that the factors influencing the hearing rehabilitation are the occupations of the parents, income of the family, the time between diagnosing deaf and the operation, the time after the cochlear implant operation and the talent level. The results of the logistic regression show that the deafened children can gain their hearing developing rapidly if they living in a family with high income, their mothers have accepted more education, and they accepted longer time of continuing hearing-aid, etc.

Objective To compare the effects of peripherally inserted central catheter(PICC)and venous port access (VPA)on the complication incidence of breast cancer.Methods A total of 191 breast cancer patients with VPA and 218 ones with PICC for chemotherapy from January 2012 to January 2014 were involved.The two groups were compared in respect of incidence of complications during intubation.Result The complication incidence in the VPA group was lower than the PICC group(P<0.05). Conclusion VPA is an ideal pathway for intravenous infusion in breast cancer patients undergoing chemotherapy.

Objective To investigate the effects of warming-needle acupuncture on the levels of matrix metalloproteinase-1 (MMP-1) and interleukin-1β (IL-1β) in the articular cartilage in knee osteoarthritis induced by immobilization in rabbits.MethodsA total of 30 adult male Japanese white rabbits were randomly assigned into three groups by random number table method: a normal group, a model group and a treatment group, with 10 rabbits in each group. Knee osteoarthritis was induced by 6 weeks of immobilization. The rabbits in the treatment group received warming-needle acupuncture after modeling at points of “Neixiyan” (EX-LE4), “Dubi” (ST35), “Zusanli” (ST36) and “Yanglingquan” (GB34) for 4 weeks. The level of MMP-1 and IL-1β in the articular cartilage of the knee were determined with radioimmunological assay.ResultsThere were significant difference in the levels of MMP-1(0.16 ± 0.02 ng/mg, 0.37 ± 0.02 ng/mg, and 0.28 ± 0.03 ng/mg;F=258.251) and IL-1β (0.21 ± 0.01 pg/mg, 0.34 ± 0.02pg/mg, and 0.31 ± 0.04 pg/mg;F=127.112) among the normal group, model group and treatment group. The levels of MMP-1 and IL-1β both in the model group and treatment group were significant higher than those in the normal group (allP<0.01), while the levels of MMP-1 and IL-1β in the treatment group were significant lower than those in the model group (allP<0.01).ConclusionWarming-needle acupuncture can effectively reduced the levels of MMP-1 and IL-1β in the articular cartilage in knee osteoarthritis induced by immobilization in rabbits.

Objective To study the effect of hypothermia on cerebral mitochondrial respiratory function and ultrastructure after traumatic brain injury(TBI). Methods Sprague-Dawley rats were subjected to moderate brain injury by using lateral fluid-percussion(LFP)and randomly divided into sham operation group,normothermic TBI group(rectal temperature for 36-37℃)and hypothermic TBI group(rectal temperature for 31-32℃ lasting for two hours).The ipsilateral brains were dissected and homogenized brain tissues were extracted to obtain mitochondfia by density-centrifugation and speed-centrifugation at 2,24 hours and at days 3 and 7 after TBI.The mitochondrial uhrastructure was studied by electron microscope.The indices of respiratory control rate(RCR)and P/O ratio of mitochondrial respiratory function were measured after oxygen consumption was determined with a Clark-type electrode.Results The mitochondrial uhrastructure of normothermic TBI group was damaged severely while that of hypothermic TBI group kept relatively integrated.The RCR and P/O ratio were markedly decreased two hours after TBI and reached the lowest level at the 24th hour(P＜0.01).At day 7,RCR kept at a lower level compared with sham operation group but P/O ratio recovered to normal.Change of RCR was similar in hypothermie TBI group and normothermic TBI group.However,RCR of the hypothermic TBI group was significantly higher than that of the normothermic TBI group within three days after TBI.In the meantime,P/O ratio recovered to normal three days after TBI. Conclusion Hypothermia can improve cerebral mitochondrial respiratory function and protect the mitochondrial structure after TBI.

With the deterioration of environment, and the excessive collection of wild resources, the wild populations of Myla- bris phalerata Pallas are less and less, almost extincted in many traditional distribution areas. It is necessary to breed M. phalerata artificially for sustainable utilization. Food preference of adult M. phalerata is the key to its provenance screening and domestication in the artificial breeding. In this paper, the food preference of 3 geographical populations of M. phalerata was studied. The results showed that the food preferences of adult M. phalerata in different geographical populations were different. The adult M. phalerata in Wuming preferred cucumber flowers, gourd flowers and melon flowers. The adult M. phalerata in Tianlin preferred cowpea flowers. And the adult M. phalerata in Guangzhou preferred cowpea flowers and gourd flowers. Gourd flowers were the most attractive food for the adult M. phalerata of 3 geographical populations of M. phalerata.
Animals ; Averrhoa ; Breeding ; Coleoptera ; physiology ; Cucurbitaceae ; Flowers ; Food ; Food Preferences ; physiology ; Geography

Objective To build the method of computerized case classification,for the purpose of perfecting the diseases typing and classification,and supporting the management based on the quality and expenses of the disease.Methods 875 cases were defined into two types.Eight parameters were selected for non-surgery cases,namely the disease diagnosis,severity at admission,and age.For surgery cases,five parameters were defined,namely the disease diagnosis,operative quantity,and severity at admission.Then Fisher function was called into play to obtain the function descriminant equation,realizing computerized classification.Results The rate of matching was 86.2％ between computerized classification and manual classification.The high accuracy of function descriminant equation proves the satisfactory outcomes of the classification.Collusion The computerized classification is satisfactory in its outcomes,and therefore it can better quality of care and cost management of diseases in clinical practice.

Objective To investigate the current situation on the infection of Acinetobacter baumannii in ICU and evaluate the efficiency of resistance control project which was performed in Xiaolan hospital,so as to provide scientific basis for clinical rational use of antibiotics.Methods Used VITEK-2 microbiology analysis system for the pathogen identification and drug sensitivity.Compared drug resistance of Acinetobacter baumannii isolated from the samples of ICU patients in 2012 (before the project executed)with that in 2013 (after the project executed).Results 71 strains and 57strains Acinetobacter bauman-nii were isolated from the ICU in 2012 (before the project executed)and in 2013 (after the project executed)respectively, which majorly isolated from the samples of respiratory system,and occupied 94.4% and 84.2% respectively.The infection rate of multi-resistant Acinetobacter baumannii was decreased from 77.5% to 66.7%,and the resistance rate of Acinetobact-er baumannii to cefepime,ceftazidime,cefatriaxone,tobramycin and cotrimoxazole decreased distinctly after the implementa-tion of drug resistance control management (χ2 > 3.84,P <0.05).Conclusion The drug resistance rates of Acinetobacter baumannii to 14 kinds of routine antibacterial drugs in 2013 were lower than that in 2012 in ICU.Among them,the drug re-sistance rates of Acinetobacter baumannii to 5 kinds of antibacterial drugs decreased distinctly.

Objective Ankylosing spondylitis (AS) can affect both the lumbar zygapophyseal joint and the centrum .This study was to compare multislice spiral CT ( MSCT) and MRI in the diagnosis of zygapophyseal joint lesions in AS patients and assess the role of zygapophyseal joint lesions in the early diagnosis of AS . Methods We retrospectively analyzed the lumbar imaging data of 41 male patients with AS .Forty-one male AS patients underwent MSCT , 18 receiving normal MRI , and the other 23 diffusion weighted imaging (DWI) and CE-T1WI-STIR in addition.Using Fisher′s Exact Test, we compared MSCT and MRI in their detection rates of a-pophyseal joint lesions and positive changes in the zygapophyseal joint and lumbar centrum .Then we analyzed the relation between the zygapophyseal joint lesions and the disease duration . Results The detection rates of zygapophyseal joint and centrum lesions were 90.2%and 58.5%on MSCT (P>0.05), and 80.5%and 46.3%on MRI (P>0.05), respectively.MSCT and MRI exhibited sig-nificant differences in the detection rate of centrum lesions (P<0.05) but not in that of zygapophyseal joint lesions (P>0.05). These lesions could appear within 1 year after the onset of AS or ahead of vertebral changes . Conclusion Both MSCT and MRI can manifest zygapophyseal joint lesions , which may develop in the lumbar spine at the early stage of AS , ahead of centrum lesions .This is important for the early diagnosis of AS .