[Effects of insufficient physical activity on motality and life expectancy in adult aged 25 and above among Chinese population]

Objective: To analyze the attribution of mortality and impact on life expectancy caused by insufficient physical activity in different gender and areas in adults aged ≥25 years among Chinese people. Methods: Data from the programs related to Chinese death surveillence, risk factors of chronic survey, health outcomes of physical activity as well as relative risk (RR) on Global Burden of Disease (GBD) study were used. Population attributable fraction (PAF) of different health outcomes attributable to deaths that caused physical activity and the influence of life expectancy in adults aged ≥25 years in Chinese people were calculated. Results: The overall PAF for all cause of death due to physical activity in adults aged ≥25 years was 4.24%, with 4.86% in females and 3.82% in males. The health outcomes of inadequate physical activity would include breast cancer, colorectal cancer, ischemic heart disease, ischemic stroke and diabetes with relative PAFs as 9.04%, 13.96%, 14.96%, 17.80% and 16.92%, respectively. The attribution of death on Physical activity was 388 954. The most attributed death was ischemic heart disease, followed by ischemic stroke. With the elimination of physical inactivity, the total life expectancy was expected to lose by 0.43 years, with 0.47 years in women, and 0.39 years in men. Conclusion: The increase of physical activity may benefit on health condition so to reduce the burden of chronic diseases and increase the life expectancy.

[Death and impact of life expectancy attributable to smoking in China, 2013]

Objective: To analyze the death attributable to smoking and impact of life expectancy in China in 2013. Methods: According to the characteristics of different diseases, we calculated the population attributable fractions of different diseases, death and impact of life expectancy which caused by smoking, using direct method (current smoking rate as exposure levels) and indirect method (smoking impact ratio as exposure levels), based on data from both programs of death surveillance and Chinese chronic disease risk factor surveillance of 2013. Results: In 2013, smoking caused around 1.59 million deaths which accounted for 17.38% of all deaths in China. Constituent ratio of death caused by smoking in males (23.66%) was much higher than that in females (8.30%). However, in urban areas (17.24%), it was slightly lower than that in rural areas (17.51%). Constituent ratio of death caused by smoking in the eastern regions appeared the lowest (16.81%), with western regions the highest (17.91%). In 2013, lung cancer, COPD and ischemia heart disease were the top three diseases causing deaths that related to smoking, but the top three population attributable fractions were lung cancer, COPD and nasopharyngeal carcinoma in China. In 2013, smoking caused a reduction of 2.04 years of life expectancy loss in China, with males in the western regions the highest (3.05 years). Conclusion: Smoking is still an important public health problem in China. Tobacco-control-targeted programs in the heavily involved areas could reduce the number of deaths from related diseases that caused by smoking.

Stent assisted coiling versus non-stent assisted coiling for the management of ruptured intracranial aneurysms: a meta-analysis and systematic review

PURPOSE

To compare the safety and efficiency of stent assisted coiling (SAC) with non-SAC for the management of ruptured intracranial aneurysms.

METHODS

A meta-analysis that compared SAC with coiling alone and balloon assisted coiling was conducted by database searching. The primary outcomes of this study were immediate occlusion and progressive thrombosis rate, overall perioperative complication rate, and angiographic recurrence. Secondary outcomes included mortality at discharge, hemorrhagic and ischemic complications, and favorable clinical outcome at discharge and at follow-up.

RESULTS

Eight retrospective cohort studies with 1408 ruptured intracranial aneurysms (SAC=499; non-SAC=909) were included. The SAC group tended to show a lower immediate complete occlusion rate than the non-SAC group (54.3% vs 64.2%; RR 0.90; 95% CI 0.83 to 0.99; I²=17.4%) and achieved a significantly higher progressive complete rate at follow-up (73.4% vs 61.0%; RR 1.30; 95% CI 1.16 to 1.46; I²=40.5%) and a lower recurrence rate (4.8% vs 16.6%; RR 0.28; 95% CI 0.16 to 0.50; I²=0.0%). With respect to safety concerns, overall perioperative complications in the SAC group were significantly higher (20.2% vs 13.1%; RR 1.70; 95% CI 1.36 to 2.11; I²=0.0%). However, no significant difference was found for mortality rate at discharge (6.3% vs 6.2%; RR 1.29; 95% CI 0.86 to 1.94; I²=0.0%), or favorable clinical outcome rate at discharge (73.4% vs 74.2%; RR 0.95; 95% CI 0.88 to 1.02; I²=12.1%) and at follow-up (85.6% vs 87.9%; RR 0.98; 95% CI 0.93 to 1.02; I²=0.0%; P=0.338).

CONCLUSIONS

SAC has a lower recurrence rate than non-SAC. Nevertheless, further validation by well designed prospective studies is warranted for determining whether stents improve angiographic outcome without an increased complication rate or unfavorable clinical outcome.

Key miRNAs and target genes played roles in the development of clear cell renal cell carcinoma

BACKGROUND

Clear cell renal cell carcinoma (CCRCC) is the most aggressive form of renal cell carcinoma (RCC).

OBJECTIVE

This study was aimed to identify the differentially expressed miRNAs and target genes in CCRCC.

METHODS

The miRNA and mRNA next-generation sequencing data were downloaded from The Cancer Genome Atlas (TCGA) dataset. Differential expression analysis was performed, followed by correlation analysis of miRNA-mRNA. Functional enrichment and survival analysis was also performed.

RESULTS

Seven hundred and eighty-seven patients with CCRCC from TCGA data portal were included in this study. A total of 52 differentially expressed miRNAs were identified in CCRCC. Then 2361 differentially expressed genes (DEGs) were identified. Prediction analysis and correlation analysis revealed that 89 miRNA-mRNA pairs were not only predicted by algorithms but also had a significant inverse relationship. Several differentially expressed miRNAs such as hsa-mir-501 and their target genes including AK1, SLC25A15 and PCDHGC3 had a significant prognostic value for CCRCC patients.

CONCLUSIONS

Alterations of differentially expressed miRNAs and target genes may be involved in the development of CCRCC and can be considered as the prognostic markers for CCRCC.

Abstract WP388: Improvement of Adherence to Performance Measures in Patients With Acute Ischemic Stroke by Using Automatic Extraction of Electronic Medical Records: Baseline Characteristics of the Network of Shanghai Stroke Service System (4S)

Introduction: Several stroke quality control and outcome projects have demonstrated the success in improving stroke care quality through structured process. However, Chinese healthcare systems are challenged with its overwhelming numbers of patients, limited resources and large regional disparities. This study aims to Improve quality of stroke care to address regional disparities.

Methods: The Shanghai Stroke Service System (4S) was established as a regional network for stroke care quality improvement in Shanghai. The 4S registry uses a web-based database that automatically extracts data from structured electronic medical records. Thirty-six hospitals including 10 regional stroke centers and 25 district stroke centers. Registry began enrolling all patients with diagnosed acute ischemic stroke (AIS) in 2017. Primary outcome is to evaluate the differences in quality metrics performance before and after the implementation structured quality improvement process.

Results: Among 14461 patients with AIS registered, patient’s average age was 73 years old with 4958 women (34.2%) in 2017. Compared to the data from the previous registry, web-based database enrolled more patients (3175 in 2014, 4815 in 2015, 12387 in 2016, p<0.001). With the best use of resource(Table1), AIS patients in 4S were more likely to receive performance measures than those of previous registry (composite measure 83%, Figure 1A). A trend of gradually decreased hospital mortality and rate of unplanned re-admission within 30 days was observed in 4S hospitals (Figure 1B).

Conclusions: The study has helped to identify areas stroke care deficiencies and improvement. Despite of challenges of healthcare in China, 4S proved the feasibility and potentially effective as a regional stroke network model for quality improvement. This model could be duplicated at other large cities or regions in China. Clinicaltrials.gov Identifier NCT02735226

Endovascular Treatment of Ruptured Middle Cerebral Artery Aneurysms: A Single-Arm Meta-Analysis and Systematic Review

OBJECTIVE

The use of endovascular treatment for ruptured middle cerebral artery (MCA) aneurysms, which have been more likely to be recommended for neurosurgical clipping because of the complex anatomic configuration, remains controversial. In the present study, the angiographic and clinical outcomes of endovascularly treated ruptured MCA aneurysms were systematically reviewed.

METHODS

Online databases, including Cochrane, Medline, Web of Science, and Embase, were retrospectively and systematically searched. The primary outcomes were the immediate complete occlusion rate, mortality, complication-related mortality, and procedure-related complication rate. Meta-analysis was performed using a random or fixed effect model based on heterogeneity.

RESULTS

A total of 14 studies with 1004 ruptured MCA aneurysms were included. The procedure-related mortality rate at discharge was 1.8% (95% confidence interval [CI], 0.9%-2.7%; I² = 0.0%; P = 0.623). The favorable clinical outcome rate at discharge was 65.4% (95% CI, 54.8%-76.0%; I² = 94.2%; P < 0.001) and had progressively increased to 73.2% (95% CI, 59.9%-86.5%; I² = 80.9%; P < 0.001). The overall complication rate was 22.7% (95% CI, 15.1%-30.3%; I² = 75.5%; P < 0.001).

CONCLUSION

Endovascular treatment of MCA aneurysms was related to a high incidence of procedure-related complications but a low rate of procedure-related mortality. The overall angiographic and clinical outcomes were comparable and warrant further investigation comparing clipping versus coiling for ruptured MCA aneurysms.

Short-course regimens of rifapentine plus isoniazid to treat latent tuberculosis infection in older Chinese patients: a randomised controlled study

Latent tuberculosis infection (LTBI) management is now a critical component of the World Health Organization's End TB Strategy.In this randomised controlled trial (Chinese Clinical Trial Registry identifier ChiCTR-IOR-15007202), two short-course regimens with rifapentine plus isoniazid (a 3-month once-weekly regimen and a 2-month twice-weekly regimen) were initially designed to be evaluated for rural residents aged 50-69 years with LTBI in China.Due to the increasingly rapid growth and unexpected high frequency of adverse effects, the treatments were terminated early (after 8 weeks for the once-weekly regimen and after 6 weeks for the twice-weekly regimen). In the modified intention-to-treat analysis on the completed doses, the cumulative rate of active disease during 2 years of follow-up was 1.21% (14 out of 1155) in the untreated controls, 0.78% (10 out of 1284) in the group that received the 8-week once-weekly regimen and 0.46% (six out of 1299) in the group that received the 6-week twice-weekly regimen. The risk of active disease was decreased, with an adjusted hazard ratio of 0.63 (95% CI 0.27-1.43) and 0.41 (95% CI 0.15-1.09) for the treatments, respectively. No significant difference was found in the occurrence of hepatotoxicity (1.02% (13 out of 1279) versus 1.17% (15 out of 1279); p=0.704).The short regimens tested must be used with caution among the elderly because of the high rates of adverse effects. Further work is necessary to test the ultrashort regimens in younger people with LTBI.

[Peripheral small airway dysfunction differences between idiopathic pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension]

Objective: To investigate the peripheral small airway dysfunction differences between idiopathic pulmonary arterial hypertension (IPAH) and chronic thromboembolic pulmonary hypertension (CTEPH). Methods: Impulse oscillmetory system testing (IOS) and pulmonary function testing (PFT) were performed in IPAH and CTEPH patients and 30 healthy control group. We also carried out a subgroup analysis depending on their medical history of airway diseases. Results: We included 42 IPAH and 47 CTEPH patients (with or without airways disease: 8 vs. 34 and 17 vs. 34, respectively). Compared with CTEPH patients, IPAH patients were younger but had more serious pulmonary vessel resistance and mean pulmonary arterial resistance. Compared with IPAH patients, CTEPH patients had significant impaired peripheral small airway dysfunction with decreased of MEF(50) (% pred), MMEF(75/25) evaluated by PFT and R5-R20, Δ R5-R20 and AX measured by IOS [10.6(2.0, 33.0) vs. 2.5(-5.0, 16.5); 22.1(14.0, 32.6) vs. 15.5 (7.0, 23.2); 7.64(4, 18.6) vs. 6(3, 11) respectively, all P<0.05]. Subgroup analysis revealed there were no significant peripheral small dysfunction differences in IPAH patients with or without airway diseases. CTEPH patients had a higher proportion of airway diseases and more serious peripheral dysfunction than IPAH patients with airway diseases. Compared with control healthy group, peripheral airway dysfunction was more obvious even in IPAH and CTEPH patients without airway diseases. Conclusion: Compared with IPAH, CTEPH patients were older, but had better hemodynamics and a higher proportion of airway diseases. The peripheral airway dysfunction were more serious in CTEPH patients without airway diseases than IPAH patients without airway diseases and healthy controls group.

Preliminary experience with the use of low profile visualized intraluminal support device in basilar artery for aneurysm treatment

BACKGROUND

The low profile visualized intraluminal support (LVIS) device is being increasingly used for the treatment of intracranial aneurysms. Its application in the basilar artery (BA) has not yet been reported.

OBJECTIVE

To evaluate the safety and early efficacy of the LVIS device for the treatment of BA aneurysms.

METHODS

A prospectively maintained database was retrospectively reviewed for all patients with BA aneurysms treated by LVIS stents at our institution. Angiographic results were evaluated using the modified Raymond-Roy classification (mRRC).

RESULTS

23 patients (mean age 52.8 years) with a BA aneurysm that was treated by LVIS stent implantation, with (n=21) or without (n=2) adjunctive coiling, were included in our study. 7 aneurysms were treated in the setting of subarachnoid hemorrhage (SAH). 10 aneurysms were located at the basilar tip, 10 at the basilar trunk, and 3 at the superior cerebellar artery. Procedure related complications developed in three patients (13%), including two perforator infarction and one worsening mass effect. Complications resulted in permanent morbidity (4%) in one case. One fatality was related to severe poor grade SAH. At a mean follow-up of 6.9 months, 13 of the 20 patients were mRRC I closure, 3 were mRRC II closure with an improvement from class IIIa, 3 were observed to be recanalized from class IIIa to IIIb, and 1 with stenting only was still patent similar to the immediate angiography.

CONCLUSION

The LVIS stent represents a feasible and safe option for endovascular embolization of BA aneurysms. Although recanalization may occur after LVIS treatment, the mid term complete occlusion rate was acceptable.

Risk factors for hyperperfusion-induced intracranial hemorrhage after carotid artery stenting in patients with symptomatic severe carotid stenosis evaluation

Background

Analyzing risk factors for hyperperfusion-induced intracranial hemorrhage (HICH) after carotid artery stenting (CAS) in patients with symptomatic severe carotid stenosis.

Methods

This study retrospectively analyzed clinical data of 210 patients, who had symptomatic severe carotid stenosis (70–99%) and received CAS treatment between June 2009 and June 2015, and evaluated the relationship of HICH with patients’ clinical baseline data, imaging features, and treatment strategies.

Results

Seven patients (3.3%) developed HICH after CAS. The incidence of HICH among patients with near total occlusion was significantly higher than among those without (10.1% vs 0%, P<0.001). Out of the seven, five had no development of either anterior or posterior circulations, and two had no development of anterior circulation and poor development of posterior circulation. Results showed that patients with poor compensation of Willis’ Circle were more likely to develop HICH compared with other patients (P<0.001). All patients received preoperative CT perfusion. TTP index was defined as the TTP ratio between the affected and contralateral side. The results showed that the TTP index was significantly different between the HICH group and non-HICH group (1.15±0.10 vs 1.30±0.15, P<0.001). An analysis of the ROC curve indicated that patients with TTP index >1.22 were more likely to develop HICH compared with other patients (sensitivity 100%, specificity 75.9%).

Conclusions

Patients with severe unilateral carotid stenosis, the presence of near total occlusion, poor compensation of Willis’ Circle, and preoperative TTP index>1.22, have a higher risk of developing HICH after CAS.

Vertebral artery fusiform aneurysm geometry in predicting rupture risk

Cerebral aneurysms affect a significant portion of the adult population worldwide. Despite significant progress, the development of robust techniques to evaluate the risk of aneurysm rupture remains a critical challenge. We hypothesize that vertebral artery fusiform aneurysm (VAFA) morphology may be predictive of rupture risk and can serve as a deciding factor in clinical management. To investigate the VAFA morphology, we use a combination of image analysis and machine learning techniques to study a geometric feature set computed from a depository of 37 (12 ruptured and 25 un-ruptured) aneurysm images. Of the 571 unique features we compute, we distinguish five features for use by our machine learning classification algorithm by an analysis of statistical significance. These machine learning methods achieve state-of-the-art classification performance (81.43 ± 13.08%) for the VAFA morphology, and identify five features (cross-sectional area change of aneurysm, maximum diameter of nearby distal vessel, solidity of aneurysm, maximum curvature of nearby distal vessel, and ratio of curvature between aneurysm and its nearby proximal vessel) as effective predictors of VAFA rupture risk. These results suggest that the geometric features of VAFA morphology may serve as useful non-invasive indicators for the prediction of aneurysm rupture risk in surgical settings.

FOXO1 associated with sensitivity to chemotherapy drugs and glial-mesenchymal transition in glioma

Mesenchymal subtype of glioblastoma (GBM), identified as one of four clinically relevant molecular subtypes, has worst prognosis because of its close relation with the malignant biological properties induced by glial-mesenchymal transition (GMT). However, the molecular mechanism of GMT and its characterized molecule of GBM have not been studied. Forkhead box protein O1 (FOXO1) is at a convergence point of receptor tyrosine kinase signaling as one of the three core pathways implicated in GBM. Our previous study indicated that the inactivation of FOXO1 involved in the inhibition of GMT is an independent prognosis factor of GBM. In this study, we will further confirm the role of FOXO1 in GMT through cytological experiments to clarify how FOXO1 regulates GMT and its clinical significance. We established virus-infected FOXO1 overexpression and FOXO1 knockdown cells of U373 MG and U251 mediated by lentivirus, based on the effect of which FOXO1-correlated-GMT experiments were performed in vitro and in vivo. Our data suggested that FOXO1 played a crucial role in resistance to TMZ, BCNU, and CDDP; migration and invasion; and stem cell properties of glioma cells. FOXO1 may serve as a targeted biomarker for prediction of sensitivity to chemotherapy drugs, metastasis, and prognosis, which provides a new idea for mesenchymal GBM treatment.

Stanniocalcin 2 Ameliorates Hepatosteatosis Through Activation of STAT3 Signaling

Stanniocalcin 2 (STC2), a secreted glycoprotein hormone, regulates many biological processes, including cell proliferation, apoptosis, tumorigenesis, and atherosclerosis. However, its role in hepatic triglyceride metabolism remains unknown. In the present study, we found that expression levels of STC2 were significantly reduced in the livers of leptin-deficient and high fat diet-induced obese mice. Systemic administration of STC2 recombinant protein or adenovirus-mediated overexpression of STC2 markedly attenuated hepatosteatosis and hypertriglyceridemia in obese mice. At the molecular level, we found that STC2 activated the STAT3 signaling pathway to inhibit lipogenic gene expression. Consistently, in vitro studies further showed that inhibition of STAT3 signaling abolished the anti-steatotic effects of STC2. Together, our results revealed an important role of STC2 in the regulation of hepatic triglyceride metabolism, which might provide a potential therapeutic target for the treatment of fatty liver and related metabolic disorders.

Recognition on Images from Internet Street View Based on Hierarchical Features Learning with CNNs

This article describes hierarchical features with unsupervised learning on images from internet street view images. This is due to the time spent by trained researchers on feature construction steps with traditional methods. This article focuses on the activation of each layer of with convolutional neural networks (CNNs) on Internet street view images detection and compared similarities and differences among them on each layer. The experiment results achieved error rates of 21% on recognition which work went relatively well than the traditional machine learning techniques, such as Parallel SVM.

[Estimation of the impact of risk factors control on non-communicable diseases mortality, life expectancy and the labor force lost in China in 2030]

Objective: To estimate the impact of risk factors control on non-communicable diseases (NCDs) mortality, life expectancy and the numbers of labor force lost in China in 2030. Methods: We used the results of China from Global Burden of Disease Study 2013, according to the correlation between death of NCDs and exposure of risk factors and the comparative risk assessment theory, to calculate population attributable fraction (PAF) and disaggregate deaths of NCDs into parts attributable and un-attributable. We used proportional change model to project risk factors exposure and un-attributable deaths of NCDs in 2030, then to get deaths of NCDs in 2030. Simulated scenarios according to the goals of global main NCDs risk factors control proposed by WHO were constructed to calculate the impact of risk factors control on NCDs death, life expectancy and the numbers of labor force lost. Results: If the risk factors exposure changed according to the trend of 1990 to 2013, compared to the numbers (8.499 million) and mortality rate (613.5/100 000) of NCDs in 2013, the death number (12.161 million) and mortality rate (859.2/100 000) would increase by 43.1% and 40.0% respectively in 2030, among which, ischemic stroke (increasing by 103.3% for death number and 98.8% for mortality rate) and ischemic heart disease (increasing by 85.0% for death number and 81.0% for mortality rate) would increase most quickly. If the risk factors get the goals in 2030, the NCDs deaths would reduce 2 631 thousands. If only one risk factor gets the goal, blood pressure (1 484 thousands NCDs deaths reduction), smoking (717 thousands reduction) and BMI (274 thousands reduction) would be the most important factors affecting NCDs death. Blood pressure control would have greater impact on ischemic heart disease (662 thousands reduction) and hemorrhagic stroke (449 thousands reduction). Smoking control would have the greatest effect on lung cancer (251 thousands reduction) and chronic obstructive pulmonary disease (201 thousands reduction). BMI control would have the greatest impact on ischemic heart disease (86 thousands reduction) and hypertensive heart disease (45 thousands reduction). If the risk factors exposure changed according to the trend of 1990 to 2013, in 2030, the life expectancy of Chinese population would reach to 79.0 years old, compared to 2013, increasing by 3.3 years old, the labor force at the age of 15-64 years old would loss 1.932 million. If the risk factors get the goals in 2030, life expectancy would increase to 81.7 years old and the number of labor force lost would decrease to 1.467 million. Blood pressure, smoking and BMI control would have much greater impact on life expectancy (4.9, 4.0 and 3.8 years old respectively) and labor force lost (630 thousands, 496 thousands and 440 thousands respectively). Conclusion: Risk factors control would play an important role in reducing NCD death, improving life expectancy of residents and reducing loss of labor force. Among them, the control of blood pressure raising, smoking and BMI raising would have a greater contribution to the improvement of population health status.

MiR-199a-3p acts as a tumor suppressor in clear cell renal cell carcinoma

OBJECTIVES

To explore the biological function and mechanism of miR-199a-3p in clear cell renal cell carcinoma (CCRCC).

METHODS

We investigated the expression of miR-199a-3p in CCRCC through quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). Over expression of miR-199a-3p was performed in CCRCC cell lines, and cell growth curve, colony formation capacity, cell invasion, wound healing and cell apoptosis assay were used for investigating the roles of miR-199a-3p in CCRCC.

RESULTS

The expression of miR-199a-3p in CCRCC tissues was significantly lower than that in para-carcinoma tissues. Functional assay showed that over expression of miR-199a-3p influenced cell growth, colony formation, cell invasion, cell migration and cell apoptosis in CCRCC cell lines.

CONCLUSIONS

Our work suggested that miR-199a-3p was related to cell growth, colony formation, cell invasion, cell migration and cell apoptosis, which might act as a tumor suppressor in CCRCC.

miR‑24 regulates angiogenesis in gliomas

Gliomas are one of the most common and most aggressive types of central nervous system tumor. Angiogenesis is an important basis for the growth of solid tumors, including gliomas, which is regulated by microRNAs (miRNAs). However, the mechanism remains unclear. Recently, it was demonstrated that miR‑24 was upregulated in gliomas, so the aim of the present study is to establish whether the dysregulation of miR‑24 in glioma cells promotes microvascular proliferation of endothelial cells (ECs), and to investigate the potential mechanism. miR‑24 was overexpressed or downregulated in U251 glioma cell line cells using miR‑24 mimics or inhibitors, respectively. Subsequently, the effects of conditional medium from miR‑24 mimic‑ or inhibitor‑transfected U251 cells on cell viability, migration and angiogenesis of human umbilical vein ECs (HUVECs) were examined. The expression levels of vascular endothelial growth factor (VEGF) mRNA, basic fibroblast growth factor (bFGF) mRNA, epidermal growth factor (EGF) mRNA, transforming growth factor (TGF)‑β mRNA, matrix metalloproteinase (MMP)‑2 mRNA and MMP‑9 mRNA, and the mRNA and protein levels of VEGF and TGF‑β in miR‑24 mimic‑ or inhibitor‑transfected U251 cells were obtained by reverse transcription‑quantitative polymerase chain reaction and western blot analysis, respectively. The effects of conditional medium from miR‑24 mimic‑ or inhibitor‑transfected U251 cells on expression levels of VEGF mRNA, TGF‑β mRNA, MMP‑2 mRNA and MMP‑9 mRNA, and mRNA and protein expression levels of VEGF and TGF‑β, and intracellular AKT and β‑catenin signaling in HUVECs were also examined. The results indicated that the conditional medium from miR‑24 mimic‑transfected U251 cells exhibited significantly increased cell viability, cell migration and tube formation of HUVECs. By contrast, the conditional medium from miR‑24 inhibitor‑transfected U251 cells exhibited significantly decreased cell viability, cell migration and tube formation of HUVECs. Enforced expression of miR‑24 in U251 cells may promote the cell viability and angiogenesis of HUVECs. The mRNA expression levels of VEGF, bFGF, EGF, TGF‑β, MMP‑2 and MMP‑9 in U251 cells were significantly increased by miR‑24 mimics. Western blot detection confirmed the increased levels of VEGF and TGF‑β protein expression in U251 by miR‑24 mimics, and the decrease of VEGF and TGF‑β protein expression levels in U251 by miR‑24 inhibitors. The conditional medium from miR‑24 mimic‑transfected U251 cells increased the expression levels of the angiogenesis‑associated factors, including VEGF, TGF‑β, MMP‑2, and MMP‑9. By contrast, reduced expression of miR‑24 in U251 cells may downregulate the expression of those angiogenesis‑associated factors. Thus, miR‑24 in U251 cells may be important in the angiogenesis of HUVECs via VEGF and TGF‑β, and the intracellular signaling of AKT and β‑catenin may be involved in this process.