Calmodulin,as an important signaling regulatory protein,widely exists in eukaryotic cells and participates in a variety of physiological activities.Alzheimer's disease (AD) is a typical neurodegenerative diseasemostly affecting the old people.Senile plaques (SP) caused by amyloid protein deposition and neurofibrillary tangles (NTF) caused by over-phosphorylation of Tau protein in the brain are the two major neuropathological hallmarks of AD.Neuronal apoptosis induced by dysregulation of calcium homeostasis also plays a significant role during this pathological process.Recent studies have found that calcium and its downstream receptor,calmodulin,are closely associated with the pathogenesis and progress of Alzheimer's disease.This article reviews the current development and the latest research progress on the effects of calmodulin on β-amyloid protein generation and deposition,neurofibrillary tangle formation,synaptic plasticity in AD around the world,comprehensively discusses the role of calmodulin in the pathogenesis of Alzheimer's disease.

Random clustering was conducted among a total of 1068 residents aged 18 years or older at a certain Shanghai community.And they completed a questionnaire survey.Logistic data processing and model building were performed.The respondents were willing to go to a community health center for the following reasons:close proximity (88.4％),excellent service attitudes (40.4％) and low drug prices (37.8％).No statistically significant differences existed in terms of first choices of community health service,occupation,monthly income and-walking distance (P ＞ 0.05).However,statistically significant differences existed in education level,age and chronic diseases (P ＜ 0.05).

Animals ; Calpain ; Humans ; Nervous System Diseases ; chemically induced ; Organophosphate Poisoning

Objective To explore the effect of cognitive behavior intervention on the defense style of patients with depression. Methods One hundred and forty-six patients with depression in hospitalized were divided into study group and control group according to the set sequence. The study group and the control group were given cognitive behavioral intervention and routine nursing, respectively. All patients were assessed by Hamilton depression scale (HAMD), Hamilton anxiety scale (HAMA), Simplified Coping Style Questionnaire (SCSQ), and Defense Style Questionnaire (DSQ) . Results The differences of conceal type and positive coping factor were significantly before and after intervention in the study group ( < 0.05) . In the 6th week, the differences of conceal type and positive coping factor were significantly between the two groups ( < 0.05) . The differences of HAMD and HAMA scores were significantly between the 0 th and 6 th weeks of the two groups ( <0.05) . There was negatively correlated between HAMD and positive coping factor ( <0.05) . There were positively correlated between HAMD and the cover up defense mode ( <0.05),HAMA and the cover up defense mode ( <0.05) . Conclusion The cognitive behavior intervention could improve the depression and anxiety symptoms and defense style in patients with depression.

Objective To investigate hemostatic effect of uterine tamponade in dealing with postpartum hem -orrhage due to uterine inertia during caesarean section .Methods 72 patients treated with conservative treatment due to bleeding uterine contraction weakness during cesarean section were chosen ,who were dealed with sterile gauze close packing of uterine bleeding ( uterine packing group ) .43 patients underwent conservative therapy of uterine contraction weakness resulted in postpartum hemorrhage were selected to carry out B -Lynch suture hemostasis ( B-Lynch suture group).Bleeding volume,operation time,bleeding efficiency of two groups were calculated .Results The uterine packing group had shorter operation time ,less bleeding,immediate hemostasis rate.The B-Lynch suture group had a tad longer operation time , bleeding more , immediate hemostasis rate low , low efficiency .Immediate hemostasis rate (95%VS 82%)between two groups had statistically significant (χ2 =4.02,P<0.05),and no significant difference in the operation time(t=0.73,P>0.05).Conclusion Uterine packing for postpartum hemorrhage due to uterine inertia during caesarean section has simple operation ,rapid,hemostatic effect,postoperative body without foreign body removal.

Objective To study the influence of cognitive behavioral intervention on the quality of marriage and family function in patients with depression. Methods 146 hospitalized patients with depression were divided into study group and control group according to the set sequence. The study group were given cognitive behavioral intervention and the control group were given routine nursing.All patients were assessed by Hamilton depression scale (HAMD), Hamilton anxiety scale (HAMA), family functioning (FAD), marriage quality questionnaire (ENRICH) to evaluate the depression and family function. Results The difference in ENRICH total score, marital satisfaction, conflict resolution, children and marriage, leisure activities and the relationship with family and friends,FAD total score, problem solving, emotional response was statistically significant between before and after the intervention of the study group ( <0.05) . In the 6th weeks, the difference in ENRICH total score, marital satisfaction, conflict resolution methods, children and marriage,leisure activities and the relationship with family and friends, FAD total score, problem solving,emotional response was statistically significant between the two groups ( <0.05);The difference in HAMD,HAMA score was statistically significant between the 0th and 6 th weeks of the two groups ( <0.05) . There was a negative correlation between HAMA and conflict resolution factor (=-0.48, <0.05) . There was a positive correlation between FAD and the HAMD total score (=0.43,<0.05) . There was a negative correlation between ENRICH and HAMD total scores (r=-0.46, <0.05) .Conclusion The cognitive behavioral intervention can improve the family function and the quality of marriage in patients with depression.

BACKGROUND: Akt gene plays an important role in cell survival, proliferation, metabolism, and apoptosis. Although mechanism of Akt gene still remains unclear, it, a major element of survival signal, has aroused much attention in the domain of molecular biological research. OBJECTIVE: To construct eukaryotic expression vector pDC316-Akt1 for Aktl gene and to observe the expression in 293 cells. DESIGN, TIME AND SETTING: An observational study was performed at Molecular Biological Laboratory of Academy of Military Medical Sciences of Chinese PLA between September and December 2006. MATERIALS: pCD316 plasmid was provided by Benyuan Zhengyang Company; DH5α and 293 cells were reserved in our laboratory. METHODS: Aktl DNA segment was cloned from total RNA of hepatic tissue using RT-PCR and inserted into eukaryotic expressing vector pDC316 between EcoRI and Hind Ⅲ sites after sequencing. And then, 293 cells were transfected with the recombinant by liposome. MAIN OUTCOME MEASURES: Aktl gene content in transfected 293 cells using Westem blotting. RESULTS: Sequencing test indicated that Aktl amino acid sequence was in accordance with wild Aktl sequence. Akt-pDC316 was transcripted in 293 cells, and Akt1 protein with relative molecular weight of 55 000 was highly expressed in 293 cells when assayed using Western blotting. CONCLUSION: Eukaryotic expression vector for Aktl gene highly expresses in 293 cells.

BACKGROUND: Hereditary susceptibility is an important role in episode and development of diabetic nephropathy (DN). Aggregation of monocyte in kidney tissue, differentiation to histocyte and reinforcement of signal are possibly closed to episode and development of DN in type 2 diabetes mellitus (DM). Regulated upon activation normal T-cell expressed and secreted (RANTES) is a chemokine of C-C subtribe. It can mediate infiltration and activation of inflammatory cells and cause injuries of renal corpuscle and renal mesenchymal. This may be a key mechanism of episode and development of DM. Thus, RANTES gene may be one of the susceptible gene of DN. OBJECTIVE :To investigate correlation between RANTES gene promoter -28C/G polymorphism and DN in type 2 DM in Chinese. DESIGN: Case-contrast study. SETTING: Department of Endocrine, Affiliated Hospital of Guiyang Medical College; Center of Diabetes Mellitus of Guizhou Province. PARTICIPANTS: A total of 143 patients with type 2 DM were recruited from the Department of Endocrine, Affiliated Hospital of Guiyang Medical College and Department of Endocrine,Guizhou People's Hospital from September 2003 to September 2005. Among them, 53 cases had normoalbuminuria, 54 microalbuminuria and 36 macroalbuminuria. Another 55 healthy subjects who were selected from Center of Health Examination, Affiliated Hospital of Guiyang Medical College were regarded as control group. METHODS: 3-5 mL peripheral venous blood was collected from all subjects. RANTES gene promoter -28C/G genotype was detected with polymerase chain reaction restriction fragment length polymorphism technique. MAIN OUTCOME MEASURES: ① Allele frequency and genotypic frequency of RANTES gene promoter -28C/G; ② risk factor of DN was analyzed with Logistic regression analysis. RESULTS: All 198 subjects were involved in the final analysis. ① Comparison of CG genotypic frequency of -28C/G: There was no significant difference between normal control group and DM group (P＞ 0.05); however, that in microalbuminuria group and macroalbuminuria group was higher than that in normoalbuminuria group (24.1％, 47.2％, 9.4％, P ＜ 0.05), and that in macroalbuminuria group was also higher than that in microalbuminuria group (P ＜ 0.05). ② Frequency of G allele of -28C/G: There was no significant difference between normal control group and DM group (P ＞ 0.05); however, that in micro albuminuria group and macrealbuminuria group was higher than that in microalbuminuria group (12.0％, 23.6％, 4.7％, P ＜ 0.05), and that in macroalbuminuria group was also higher than that in microalbuminuria group (P＜ 0.05). ③ Logistic regression analysis showed that positive genotype of -28G was related to DN (95％ Cl:1.402-15.032, P =0.012). CONCLUSION: Positive genotype of RANTES gene promoter-28G may be related to DN.

Objective To investigate the relationship between exposure intensity and illumination time of blue light and replicative senescence of rat retinal pigment epithelial (RPE) ceils.Methods Thirty-six 12-14 weeks Wistar rats were kept in the cage with a blue-light bulb [(450±10) nm],and were randomly divided into four groups (no light,nature light,500 lx light and 1000 lx light illumination),each has nine rats.The rats in each group were further divided into three subgroups according to illumination time (one month,two months or three months).Eyeballs were collected after intraperitoneal injection of 10% chloral hydrate.The right eye of each rat was embedded in paraffin and sectioned for hematoxylin-eosin (HE)staining,while frozen sections of the left eye were stained for the senescence-associated β-galactosidase (SA-β-Gal).The data were analyzed by SPSS11.5 statistical software.Results The amounts of SA-β-Gal positive RPE cells were significantly different between all groups under the same illumination time 17 (P=0.000),and between all subgroups of different illumination time with same exposure intensity (P＜0.01)except for the control group (no light).Conclusion Blue-light can induce replicative senescence in rat RPE cells in an intensity and time-dependent manner.

Programmed death-ligand 1 (PD-L1 ),which is highly expressed in NSCLC,can be divided into two categories:membrane PD-L1 and soluble PD-L1 .PD-L1 participates in tumor immune escape through combining with its receptor.PD-L1 immune checkpoint inhibitors have entered the phase Ⅰ studies and showed a good application prospect.It is also found that the sensitivity of PD-L1 immune checkpoint inhibitors is strongly associated with the expression of PD-L1 in tumor.Therefore,PD-L1 can be used as a biomarker to pre-dict its curative effect.