The Adaptational Regulation Mechanism of the Apoptosis in Aged Rats’ Striatum in Response to Regular Aerobic Exercise Based on Carbonylation Proteomics / 中国生物化学与分子生物学报

This paper investigated the effects of regular aerobic exercise on protein oxidative stress and apoptosis in aging rat striatum, and further analyzed its target proteins and mechanism based on differential carbonylation proteomics. Totally 24 specific pathogen-free (SPF) 23-month-old male Sprague-Dawley (SD) rats were randomly divided into aged sedentary control group (Con-SED, n = 12) and aged regular aerobic exercise runner group (Aero-EXE, n = 12). The medium intensity of regular aerobic exercise model: The intensity of maximum oxygen consumption (VO

Progress of effects of 14-3-3 protein on gastric cancer and its mechanism / 解放军医学杂志

14-3-3 proteins are a highly conserved family of cellular proteins, and widely expressed in all eukaryotes. Because they can bind to a variety of functional signal proteins, so be regarded as "bridge proteins" in protein interaction. Studies have shown that the expression level of 14-3-3 protein family in malignant tumors is closely related to tumor size, depth of invasion and metastasis. Some other studies have shown that 14-3-3 protein plays a pivotal role in cell signal transduction, control of cell cycle process and regulation of apoptosis, and plays an important role in the development of gastric cancer, proliferation, invasion, prognosis and drug resistance, so is expected to become a novel therapeutic target for gastric cancer. The present paper aims to expound the role and relevant mechanisms of 14-3-3 protein in gastric cancer.

Research progress of 14-3-3 protein and lipid metabolism / 中华内分泌代谢杂志

Tyrosine-3-monooxy genase/tryptophane-5-monooxy-genase activator protein ( 14-3-3 protein ) is a family of highly conservative and widely expressed acidic polypeptides in all eukaryotic cells. The 14-3-3 protein family consists of adaptors and scaffolds that participates in many cellular processes, such as apoptosis and metabolism. Recent studies have found that 14-3-3 protein is associated with many proteins related to lipid metabolism. It could be exploited for therapy of lipid metabolism disorders. This paper briefly describes the role of the 14-3-3 protein in the lipid metabolism and its related diseases.

Characteristics of Creutzfeldt-Jakob disease cases in Shaanxi Province,China, 2011-2015 / 中国人兽共患病学报

We investigated the epidemiological and clinical characteristics,to provide evidence for the control and prevention of Creutzfeldt-Jakob disease (CJD) in Shaanxi Province,China.Clinical and epidemiological datas on 49 suspicious CJD patients from 7 hospitals in Shaanxi Province from 2011 to 2015 was collected.Blood and cerebral spinal fluid (CSF) specimens from the cases were gathered.For CSF sample,14-3-3 protein were tested by Western blot.For blood sample,PCR and sequencing were used,and then the mutation of PRNP gene and the polymorphism of 129 and 219 amino acids were analyzed.It showed that a total number of 16 probable and 4 possible sporadic CJD patients,and 1 familial CJD case were identified.Among these cases,neither geographic nor occupational-related ones were found.The median age of onset for the probable sporadic CJD cases was 62 years old,and the gender ratio of male to female was 1.29 to 1.The most initial symptom was rapid progressive dementia,which accounted for 47.62％ of the CJD patients.This report indicates that the main type of CJD in Shaanxi Province is sporadic CJD with its distinctive characteristics including geography distribution,occupation,gender ratio and age of onset.

Revisión de Creutzfeld-Jakob a propósito de dos casos clínicos en el Hospital Universitario San Ignacio / Creutzfeldt-Jakob review based on two clinical cases in Hospital Universitario San Ignacio

La enfermedad de Creutzfeld-Jakob es una patología neurodegenerativa fatal e intratable, que hace parte de las denominadas encefalopatías espongiformes y se produce por la acumulación anormal de la PrP (proteína priónica patogénica),denominada PrPsc, a nivel del sistema nervioso central. La enfermedad priónica humana más común es la forma esporádica de la enfermedad de Creutzfeld-Jakob, cuya aparición se ha relacionado con los efectos ambientales desconocidos o los sucesos aleatorios y genéticos, que resultan en la producción espontánea de PrP en el cerebro. A continuación se presentan dos casos clínicos de dos mujeres que consultan al servicio de urgencias del Hospital Universitario San Ignacio, en quienes se sospechó encefalopatía rápidamente progresiva, compatible con enfermedad de Creutzfeld-Jakob.

Creutzfeldt-Jakob disease is a fatal and untreatable neurodegenerative disorder that is part of the so-called spongiform encephalopathies, which is caused by the abnormal accumulation of PrP protein (called PrPSc) in the central nervous system. The most common human prion disease is sporadic form of Creutzfeldt-Jakob, whose appearance has been associated with environmental effects or unknown and random genetic events that result in the spontaneous production of PrP in the brain. In this work we will present two Clinical cases of two woman who visited the emergency room of the hospital Universitario San Ignacio, in which a rapidly progressive encephalopathy caused by Creutzfeldt-Jakob disease is suspected.

Role and expression level of 14-3-3 protein in lung tissues of asthmatic rats / 中国基层医药

Objective To investigate possible role of 14 -3 -3 in the pathogenesis of asthma inflammation, the expression of 14 -3 -3 protein was observed in lung tissues of asthmatic rats.Methods Expressions of 14 -3 -3 protein was determined by immunohistochemisty method in lung tissues,and the relationship between 14 -3 -3 and asthma inflammation was analyzed.Results The location of positive expression of 14 -3 -3 protein was mainly at cytoplasm,while little at plasmalemma.The positive expression cell mostly was bronchial epithelial cell,others were lymphocytes,alveolar macrophages and vascular endothelial cells.On the other hand,the bronchial smooth muscle and vascular smooth muscle were negative expressed.Moreover,the expression level of 14 -3 -3 protein in asthma group [(0.353 ±0.023)absorbance]was significantly higher than that in the control group[(0.211 ±0.028 )absorbance] (t =10.969,P <0.01).Conclusion The results showed that the 14 -3 -3 protein was overexpressed in asthmatic lung tissue,it may play an important role in asthma inflammation through bronchial epithelial cells,lymphocytes, alveolar macrophages and vascular endothelial cell.

Hashimoto's Encephalopathy with Positive 14-3-3 Protein in the Cerebrospinal Fluid and Atypical Course Mimicking Creutzfeldt-Jakob Disease

BACKGROUND: Creutzfeldt-Jakob disease (CJD) shares common clinical features with Hashimoto's encephalopathy (HE). The 14-3-3 protein is a relatively sensitive and specific marker of CJD but is not commonly detected in HE. We report the case of a patient with HE with unusual features including positive 14-3-3 protein in the cerebrospinal fluid (CSF) and an atypical course mimicking that of CJD. CASE REPORT: A 64-year-old male was admitted due to acute-onset cognitive dysfunction. HE was suspected based on increased titers of anti-thyroid microsomal antibody and an excellent response to steroid. However, 14-3-3 protein was detected in the CSF and a recurrent attack with progressive cognitive decline, pyramidal symptoms and myoclonus mimicking CJD occurred. Cognitive dysfunction showed progressive worsening and the response to steroid treatment was decreased. CONCLUSIONS: 14-3-3 protein could be considered a general marker of neuronal destruction and not specific to CJD. The clinical manifestations of HE are variable and its diagnosis is difficult due to the lack of a specific phenotype and reliable diagnostic criteria. We recommend that patients with clinical features of CJD and antithyroid antibodies should be considered for empirical steroid treatment for HE, despite a positive result for 14-3-3 protein.

Significance of change of 14-3-3 protein in cerebrospinal fluid in different types of meningo encephalitis in children and value of judging brain injury / 中华实用儿科临床杂志

Objective To investigate the change of 14-3-3 protein in cerebrospinal fluid (CSF) in different types of meningoencephalitis in children and its value in judging brain injury.Methods CSF 14-3-3 protein bands were detected by means of Western blot in 22 patients with viral meningoencephalitis and 20 cases of purulent meningoencephalitis and with 15 cases of febrile seizures as the control group from Jul.2009 to Jun.2010,and in addition,the quantitative detection of 14-3-3 protein was done by way of ELISA.Correlation was analyzed between the clinical manifestations,prognosis,EEG,head CT or MRI and the changes of 14-3-3 protein.Results The positive rate of 14-3-3 protein in cases of purulent meningitis was 65.0(13/22 cases),higher than viral meningoencephalitis group(27.3％,6/22 cases),and the difference was significant.In the quantitative detection,14-3-3 protein was increased in both the purulent meningitis [(5.6 + 0.2) μg/L] and viral encephalitis groups[(3.2 + 0.3) μg/L] compared with the control group [(0.9 + 0.1) μg/L].After treatment,14-3-3 proteins were less than before in the purulent meningitis and viral meningoencephalitis groups.In the cases with severe clinical manifestations and severe injury brain suggested by imaging and EEG,the 14-3-3 protein in cerebrospinal fluid was elevated;and the prognosis of the cases with increased 14-3-3 protein was poor,as a result of epilepsy,death and so on.Conclusions 14-3-3 protein in the CSF increases with disease severity,so to a certain extent,it can be used to identify viral meningitis and purulent meningitis.

Study on the characteristics of patients with Creutzfeldt-Jakob disease under 2008 surveillance data in China / 中华流行病学杂志

Objective To describe the epidemiological and clinical characteristics of Creutzfeldt-Jakob disease (CJD) in China. Methods Clinical and epidemical data on patients from China CJD surveillance network was analyzed. Blood and cerebral spinal fluid (CSF) specimens from these patients were collected. Western blot assay was used to detect 14-3-3 protein in CSF, PCR and sequencing assay were used for analyzing the polymorphism of 129 amino acid and mutation of PRNP gene. Results A total number of 31 probable and 11 possible sporadic CJD patients were identified. Additionally, one patient with Gerstmann-Straussler-Scheinker syndrome (GSS) and 2 familial CJD cases were identified. No geographic- or occupational-related events were observed among these cases. The mean age of onset on the probable or possible CJD patients were 56.7 and 57.4 years old, with sex ratios of the probable CJD patients as 8:9 and the possible one as 5:6 respectively. Rapid progressive dementia was the main foremost symptom, presenting in 33.3% of the CJD patients. Probable CJD patients showed more clinical manifestations than those possible ones. Conclusion Geography distribution, occupation, ratio of gender and the mean onset age of the CJD eases in 2008 were consistent with the characteristics of the sporadic CJD.

Enfermedad de creutzfeldt-jakob esporádico: síntomas neuropsiquíatricos seguidos de daño cognitivo progresivo: reporte de caso / Sporadic creutzfeldt-jakob disease: neuropsychiatric symptoms followed by a progressive congnitive decline: a case report

La enfermedad de Creutzfeldt-Jakob (ECJ) es la enfermedad por priones más común y es la única entre los desórdenes humanos que se puede presentar en forma familiar, esporádica y transmitida. La hipótesis prevalente, basada en numerosos estudios en ratones transgénicos, sugiere que la ECJ y otras enfermedades por priones se inician y propagan por conversión de una proteína prionica normal (PrP) en una isoforma conformacional anormal (PrPreS). Esta última se acumula en el cerebro y es una de las características bioquímicas importantes en ECJ. Se reporta el caso de una mujer de 37 años de edad, quien murió en un hospital de tercer nivel por ECJ esporádico comprobado por autopsia. Este caso muestra la importancia de un examen post-mortem para confirmar el diagnóstico. A la luz de la observación clínica, discutimos el caso, el cual debe ser considerado en pacientes queevolucionan a una demencia rápidamente progresiva.

Creutzfeldt-Jakob disease (CJD) is the most common human prion disease and is unique among all known human disorders in being comprised of familial, sporadic, and transmitted forms. Theprevailing hypothesis, based largely on studies in transgenic animals, suggests that CJD and other prion diseases are initiated and propagated by conversion of normal host-encoded prion protein (PrP) into a conformationally abnormal isoform (PrPreS). The latter has been shown to accumulate in the brain and is the biochemical hallmark of CJD. We report the case of a 37-year-old woman who died in third level hospital of sporadic CJD proven by autopsy. This case illustrates the great importance of apost mortem exam in such context. In light of this clinical observation, we discuss this rare diagnosis which should be considered in patients when confronted with a rapidly progressive dementia.

A Case of Heidenhain Variant of Sporadic Creutzfeldt-Jakob Disease

PURPOSE: To report a case of the Heidenhain variant of sporadic Creutzfeldt-Jakob disease (CJD), predominantly characterized by visual impairment at onset. CASE SUMMARY: History-taking, ophthalmologic examination, neurologic examination, cerebrospinal fluid examination including 14-3-3 protein analysis, and brain MRI were performed in a 48-year-old man with progressive visual loss and a visual field defect. These symptoms were accompanied by visual illusion and macropsia. Neurologic examination revealed relatively rapidly progressing cognitive impairment, ataxia, aphasia, and myoclonus. The 14-3-3 protein was detectable in otherwise normal CSF samples. The diffusion weighted brain MRI showed increased signal intensity in both occipital lobes, the basal ganglia, the temporal and frontal lobes. He was clinically diagnosed as having a Heidenhain variant of sporadic CJD. CONCLUSIONS: In a patient with a rapidly progressive visual loss, visual field defects, visual illusion, and neurologic abnormalities including progressive dementia, ataxia, aphasia, and myoclonus, the Heidenhain variant of CJD should be considered. Because prions, a cause of CJD, exhibit unusual resistance to conventional chemical and physical decontamination methods, it is necessary to have an appropriate management scheme to prevent the spread of infection.

Expression of 14-3-3 sigma gene in patients with breast cancer and its clinical significance / 临床检验杂志

Objective To investigate expression of 14-3-3 sigma gene in patients with breast cancer and its clinical significance.Methods Expression of 14-3-3 sigma gene was semi-quantitated by using RT-PCR and western-blot in 40 specimens of breast cancer and 18 specimens benign breast disease tissue.Results Of 40 cases of breast cancer 35(87.5%)were negative for 14-3-3 sigma gene in RT-PCR,32(80%)were negative in Western-blot,and 31(77.5%)were negative in both RT-PCR and western-blot.Besides,the expression in 2 cases was down-regulation in both the 2 method.In 18 specimens with benign breast disease tissue the expression of 14-3-3 sigma gene was detectable,which was demonstrated by RT-PCR or western-blot.Conclusion Inactivation and down-regulation of 14-3-3 sigma gene is a frequent event in breast cancer,and it may contribute to diagnosis of breast cancer.

Overexpression of 14-3-3 protein alleviates the toxicity of MPP~+ to PC12 cell / 中华神经科杂志

Objective To investigate the protective effects of the 14-3-3 protein overexpression on the injury of PC12 cell induced by MPP~+ and its mechanisms.Methods For expression in mammalial cells, pcDNA3.1(+)-14-3-3 plasmid was constructed and transfeeted into PC12 cell with Lipofectamine~(TM)2000. The overexpression of transfected 14-3-3 gene in PC12 cell was determined by immunofluorescence and Western blotting.The effects of 14-3-3 overexpressing on the cells viability,apoptotie ratio and the activity of superoxide dismutase(SOD)as well as glutathione peroxidase(GSH-Px)of PC 12 cell treated with MPP~+ were measured by MTT assay,flow cytometry analysis and microplate reader respectively.Results The expression of 14-3-3 protein in transfection group(1.19?0.06)increased evidently compared with control group(0.75?0.05).And the antioxidant enzyme activity assession,MTT assay and flow cytometry analysis shows that the overexpression of 14-3-3 protein elevates the activity of SOD(transfection group:(9.13? 0.41)U/mg protein,MPP~+ group:(6.45?0.52)U/mg protein)and GSH-Px(transfection group: (89.66?3.42)?mol/mg,protein MPP~+ group:(82.73?4.15)?mol/mg protein),increases the cell viability(transfection group:0.78?0.06,MPP~+ group:0.54?0.07),and inhibits cell apoptosis (transfeetion group:11.87%?3.26%,MPP~+ group:36.30%?2.39%)of PC12 induced by MPP~. Conclusion The overexpression of 14-3-3 protein could elevate the activity of antioxidant enzymes SOD and GSH-Px,reduce oxidant stress,alleviate MPP~+ toxicity,and thus inhibit the apoptosis of PC12 cell induced by MPP~+.

The early diagnostic value of neuroproteins in the cerebrospinal fluid for possible Creutzfeidt-Jakob disease / 中华神经科杂志

Objective To inquire and compare the value of 4 proteins in the cerebrospinal fluid (CSF) for early diagnosis of Creutzfeldt-Jakob disease (CJD).Methods The CSF samples were obtained from 14 CJD patients in the early stage,t-tan,t-tan,t-tau/t-tau,S-100?,14-3-3 and 14-3-2 protein had been examined and compared with other dementia (OD) and none dementia (ND) as controls by capture assay and ELISA.Results (1)t-tan protein: the concentration in CJD ,OD and ND is 8295,300 and 161 pg/ml respectively,t-tau/t-tau ratio is 0.0092,0.2258 and 0.2471 respectively.(2) S-100? protein: the concentration in CJD,OD and ND is 1.576,0.639 and 0.239 ng/ml respectively.(3) 14-3-3 protein:the concentration in CJD,OD and ND is 40.00,2.65 and 3.10 ng/ml respectively.(4) 14-3-2 protein: the concentration in CJD,OD and ND is 48.43,14.00 and 20.50 ng/ml respectively.(5) At the cut-off point 500 pg/ml for t-tan,sensitivity for diagnosis of CJD is 84.6% and specificity is 87.6% ,t-tan has no diagnostic value to CJD.(6) At 1.626 ng/ml for S-100?,the sensitivity is 92.3% and specificity is 83.8%.(7) At 9 ng/ml for 14-3-3 protein,the sensitivity is 86.7% and specificity is 86.4%.(8) At a level of24 ng/ml for 14-3-2 protein,the sensitivity for diagnosis of CJD is 78.6% and specificity is 77.3%. Conclusion It is the CSF detection of neuroproteins that have great valuble significance in diagnosis for sporadic CJD in the early stage.

Diagnostic value of quantitative test of 14-3-3 protein in the cerebrospinal fluid in sporadic Creutzfeldt-Jakob disease / 临床神经病学杂志

Objective To explore the diagnostic value of quantitative test of 14-3-3 protein content in cerebrospinal fluid(CSF)in sporadic Creutzfeldt-Jakob disease(sCJD).Methods The Capture Assay was used to detect the level of CSF 14-3-3 protein in 14 cases of sCJD(sCJD group),10 cases of other dementia(OD group),12 cases of non dementia(ND group).Results The media of 14-3-3 protein content was 40.00 ng/mg in sCJD group,2.65 ng/mg in OD group,and 3.10 ng/mg in ND group,respectively.It was significantly higher in sCJD group than that in groups OD and ND(all P

Diagnosis value of 14-3-3 protein and neuron-specific enolase in cerebrospinal fluid for Creutzfeldt-Jakob disease / 临床神经病学杂志

24 ng/ml,sensitivity and specificity were 90% and 92.9% respectively.Conclusions The diagnosis value of 14-3-3 protein in CSF is higher than that of NSE. The combination of CSF 14-3-3 protein and NSE can improve the sensitivity and specificity in diagnosis of CJD.

Expression of Echinococcus multilocularis 14-3-3 antigen encoding gene in BCG / 重庆医科大学学报

Objective: To study the expression of Echinococcus multilocularis 14-3-3 antigen encoding gene in Bacillus Calmette-Guerin(BCG).Methods: The recombinant plasmid pBCG-Em14-3-3 was introduced into BCG by electroporation and the bacteria with pBCG-Em14-3-3 were cultured to logarithm growth period,then induced daily by heating at 45℃ for 30min in the last three days.The expression products were analyzed by SDS-PAGE and Western blot.Results: The Em14-3-3 recombinant protein was successfully expressed by pBCG-Em14-3-3 in BCG as an obvious band of 27kDa by SDS-PAGE,which accounted for 11% of total bacterial protein in BCG.Conclusion: The pBCG-Em14-3-3 could be expressed efficiently in BCG and be combined with specific antibody in mice sera,which suggested that the Em14-3-3 recombinant protein expressed by rBCG-Em14-3-3 vaccine was of specific antigenicity.