Objective To investigate the value of a new index - Tei index for estimating left ventricular global function in patients with acute myocardial infarction.Methods The study population included 95 patients with acute myocardial infarction.They were divided into two groups according to EF measured by echocardiography in apical four chamber view:one group with normal EF(EF≥50%,n=52)(group A),the other with abnormal EF(EF

Objective To investigate the relationship between correlative factors of ambulatory arterial stiffness in-dex (AASI) and target organ damage (TOD) in patients with primary hypertensive. Methods A total of 330 hypertensive pa-tients were included in the study and divided into two groups according to the value of AASI:low AASI group (n=167) and high AASI group (n=163). The value of AASI was obtained from 24-hour ambulatory blood pressure monitor (ABPM). The clinical data were collected including general information, the data of ABPM, results of coronary angiography, left ventricular mass index (LVMI), estimated glomerular filtration rate (eGFR) and ankle brachial index (ABI) in two groups. Results There were significantly higher values of age (years:64.91 ± 9.70 vs 59.12 ± 10.00), the proportion of diabetes (33.8% vs 14.8%), the proportion of non-dipper patterns of hypertension (65.6%vs 43.7%), 24-hour pulse pressure (PP, mmHg:65.27± 11.31 vs 56.06±10.51), 24-hour diastolic blood pressure standard deviation(DBPSD, mmHg:9.64±2.47 vs 8.31±2.31), the number of coronary artery lesions (1.78±1.10 vs 1.27±1.07), LVMI (g/m2:125.74±29.65 vs 107.69±23.23) and the proportion of peripheral vascular disease (27.3%vs 16.4%) in high AASI group than those in low AASI group (P<0.01). The level of eGFR was significantly lower in high AASI group than that in low AASI group [mL/(min · 1.73 m2):85.31 ± 20.31 vs 99.67 ± 17.76]. There were positive correlation between AASI and coronary lesions (r=0.235), LVMI(r=0.168) and peripheral vascu-lar disease (r=0.167). And there was a negative correlation between AASI and eGFR (r=-0.187). The multiple linear regres-sion analysis showed that age, diabetes, PP, DBPSD and non-dipper patterns of hypertension were the predictors of AASI. Conclusion AASI correlated with age, diabetes, PP, blood pressure variability and non-dipper patterns of hypertension. The higher level of AASI may relate to the development of TOD in patients with primary hypertensive.

Objective To discuss a optimal culture method of primary hippocampal neurons and a more suitable method of mor-phological observation ,and provide basis to the study of synapse in Alzheimer′s Disease .Methods Postnatal 0 -1 days (P0 -1 ) C57BL/6J mice were decollated and bilateral hippocampus were separated .Low level concentration of trypsin and mechanical disso-ciation were adopted .And culture medium without serum was used to culture neurons .After 17 days culturing ,transfected neurons with Green Fluorescent Protein(GFP) by calcium phosphate precipitation ,and then observed neurons and spines by fluorescence mi-croscope .Results The neurons looked good and healthy by using this method .And the axons ,dendrites and spines which were typ-ical structure of neurons were observed clearly after transfected with GFP .Conclusion The cultured hippocampal neurons look good by this method .And the morphological characteristics of neurons and spines are observed much more clearly after transfected GFP by calcium phosphate precipitation .

OBJECTIVE: To investigate the inhibition effects of Tianshen Yizhi Recipe (TSYZR), a compound traditional Chinese herbal medicine, on decreased expression of nicotinic acetylcholine receptor (nAChR) and the neurotoxicity as well as lipid peroxidation induced by beta-amyloid peptide (Abeta) in human SH-SY5Y neuroblastoma cells. METHODS: The SH-SY5Y cells were treated by a certain concentration of TSYZR, and then exposed to Abeta(25-35). Methyl thiazolyl tetrazolium reduction assay was carried out to understand the influences of the drugs on cellular viability. Expressions of nAChR subunits (alpha3 and alpha7) at protein and mRNA levels were detected by Western-blotting and reverse transcription polymerase chain reaction, respectively. Lipid peroxidation was measured by thiobarbituric acid to observe the capacity of antioxidant of the drugs. RESULTS: TSYZR at a safe concentration could increase alpha7 protein in the cells, inhibit decreased expressions of alpha3 and alpha7 nAChR subunit proteins, prevent lower expression of alpha7 mRNA in SH-SY5Y cells induced by Abeta, reduce the neurotoxicity and lipid peroxidation resulting from Abeta, but had no significant effect on the lower expression of alpha3 mRNA. CONCLUSIONS: TSYZR can up-regulate the expression of alpha7 nAChR subunit protein and prevent decreased expressions of nAChRs and neurotoxicity as well as lipid peroxidation induced by Abeta. This drug may play an important therapeutic role in treatment of Alzheimer disease.

Ischemic stroke (IS) is the result of a combination of multiple risk factors, and its pathogenesis involves multiple systemic physiological and pathological changes. Recent studies have found that the activation of renin-angiotensin system (RAS) is closely related to the development of IS. In this review, we mainly summarize the generation of RAS and pathogenesis of RAS in IS.

OBJECTIVE: To investigate the effect of the combination of atrial fibrillation (AF) ablation and left atrial appendage closure (LAAC) on cardiac function and the success rate of AF ablation. METHODS: We retrospectively analyzed the data of 56 patients with AF undergoing a one-stop procedure for AF ablation and LAAC in our hospital between May, 2015 and May, 2019. Propensity score matching (PSM) at the ratio of 1:1 was used to select 56 control patients undergoing AF ablation at high risk of stroke, for matching with the hybrid procedure group. The perioperative complications, thromboembolic events, recurrence of atrial arrhythmia and cardiac function were compared between the groups. RESULTS: The two groups of patients were comparable for age, gender, BMI, duration and type of AF, concomitant diseases, CHA2DS2-VASc and HAS-BLED scores ( CONCLUSIONS The combination of AF ablation and LAAC is safe but does not improve the success rate of AF ablation. The one-stop procedure can improve cardiac function of the patients, but AF ablation alone can achieve better improvement of cardiac function.
Atrial Appendage/surgery* ; Atrial Fibrillation/surgery* ; Catheter Ablation ; Humans ; Retrospective Studies ; Treatment Outcome

OBJECTIVE To study the improvement effects and mechan ism of thalidomide on Alzheimer ’s disease （AD）model of Caenorhabditis elegans . METHODS In this study ，the BR 5270 strain of C. elegans was used as AD model and BR 5271 strain as the control. The effects of thalidomide （0.5，2.0，6.0，15.0 mg/mL）on the motility of BR 5270 strains of C. elegans were studied by the basal slowing response assay ；the effects of thalidomide （0.5，2.0，6.0，15.0 mg/mL）on the survival time of BR 5270 strain of C. elegans were studied by life assay ；the effects of thalidomide （0.5，2.0，6.0 mg/mL）on learning and memory ability of BR 5270 strain of C. elegans were studied by short-term and long-term learning and memory assay. RT-PCR technology was used to study the effects of thalidomide （0.5，2.0，6.0 mg/mL）on mRNA expression of phosphatidylinositol 3-kinase（PI3K）/protein kinase B （Akt）signal pathway related genes （Age-1，Akt-1，Gsk-3）and calpain homologous gene （Clp-1）in BR 5270 strain of C. elegans . RESULTS After the intervention of thalidomide ，oscillation times of BR 5270 strain of C. elegans increased significantly within 30 s （except for 0.5 mg/mL group ），and the 10％ of maximum life span was prolonged significantly （only 0.5 mg/mL group ）；the short-term and long-term learning indexes were improved significantly （only 6.0 mg/mL group ）；mRNA expression of Age-1 and Akt-1（except for 0.5，2.0 mg/mL groups ）were increased significantly ，mRNA expression of Gsk-3（except for 0.5 mg/mL group ） and Clp-1 were decreased （P＜0.05 or P＜0.01）. CONCLUSIONS Thalidomide can ameliorate the dyskinesia of AD model of C. elegans，prolong the lifespan of this strain ，and enhance its learning and memory ability. Its mechanism of action may be related to activation of PI 3K/Akt signaling pathway and inhibition of calpain.