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  • Author: Chang Zhao x
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LncRNA PVT1 promotes proliferation and invasion through enhancing Smad3 expression by sponging miR-140-5p in cervical cancer

Abstract

Background

Cervical cancer is one of the most frequent malignancies among females worldwide. Increasing evidence have indicated the participation of long noncoding RNAs (lncRNAs) in the progression and metastasis of cervical cancer. Our present study was conducted to explore the effects of lncRNA plasmacytoma variant translocation 1 (PVT1) on the progression of cervical cancer and the underlying mechanisms.

Materials and methods

Expressions of PVT1, miR-140-5p and Smad3 in cervical cancer cell lines were detected by qRT-PCR and western blotting. Bioinformatics analysis and luciferase assays were used to elucidate the potential correlations between PVT1, miR-140-5p and Smad3. The roles of PVT1 on the progression of cervical cancer cells were determined by transfecting sh-RNA through series function assays such as colony formation assay, wound healing assay, transwell assay.

Results

PVT1 and Smad3 were upregulated, and miR-140-5p was downregulated in cervical cancer cells. PVT1 could bind directly with miR-140-5p, and Smad3 was a downstream target of miR-140-5p. Inhibition of PVT1 could enhance expression of miR-140-5p, inhibit the expression of Smad3, significantly inhibited the proliferation, migration, invasion in cervical cancer cells. While transfection of miR-140-5p inhibitor could partially reverse the above changes in cervical cancer cells.

Conclusions

The results revealed that PVT1 could promote the proliferation and metastasis via increasing the Smad3 expression by sponging miR-140-5p, which might be a promising prognostic and therapeutic target for cervical cancer.

Open access
The Correlation between Gene Polymorphism and Hepatocellular Carcinoma

Abstract

The association of gene polymorphism and susceptibility to hepatocellular carcinoma (HCC) has been widely studied in recent years. Gene mutations are closely related to HCC. Understanding and measuring the gene mutations are useful to reduce the incidence of HCC and improve its prognosis.

Open access
The Pathogenesis of Acute on Chronic Hepatitis B Liver Failure

Abstract

Acute-on-chronic liver failure is a characteristic clinical liver syndrome, which should be differentiated from acute liver failure, acute decompensated liver cirrhosis and chronic liver failure. The pathogenesis of ACLF is not fully understood yet. Viral factors and immune injury have been reported to be the two major pathogenesis. This paper reviewed the researches on the pathogenesis of acute on chronic hepatitis B liver failure in recent years, to provide theoretical basis for prompt and accurate diagnosis and treatment of this syndrome. This would benefit for the prognosis and raise the survival rate of patients.

Open access
Vaspin in newly and previously diagnosed Chinese type 2 diabetic females: a case-control study

Abstract

Background: Visceral adipose tissue-derived serine protease inhibitor (vaspin) is a novel adipocytokine. Several studies have indicated that vaspin may exert an important role in the development of metabolic disorders.

Objective: Evaluate serum vaspin and its relation to clinical parameters in newly and previously diagnosed Chinese type 2 diabetes mellitus (T2DM) females as a case-control study.

Materials and methods: One hundred twenty female participants (newly and previously diagnosed T2DM patients) were recruited from an affiliated hospital of Harbin Medical University. Sixty healthy female volunteers from various communities were included as controls. Anthropometric parameters, serum fasting blood glucose, fasting insulin, lipid profile, HbA1c, and vaspin were measured in each participant.

Results: Serum vaspin levels were significantly lower in previously diagnosed T2DM patients (0.51±0.29 ng/mL) than in newly diagnosed T2DM patients (0.62±0.28 ng/mL) and healthy controls (0.69±0.31 ng/mL). However, there was no difference in serum vaspin between newly diagnosed T2DM patients and healthy controls. In multiple linear regression analysis, serum vaspin was significantly and positively associated with HbA1c in both newly and previously diagnosed T2DM patients, negatively associated with homeostasis model assessment of insulin resistance in previously diagnosed patients, and positively correlated with age and body mass index in healthy controls.

Conclusion: Serum vaspin was significantly lower in previously diagnosed T2DM patients than in newly diagnosed T2DM patients and healthy controls. Serum vaspin might be a predictor of poor glucose control and insulin resistance in T2DM.

Open access
Underwater Acoustic Sensor Networks Deployment Using Improved Self-Organize Map Algorithm

Abstract

The traditional Self-Organize Map (SOM) method is used for the arrangement of seabed nodes in this paper. If the distance between the nodes and the events is long, these nodes cannot be victory nodes and they will be abandoned, because they cannot move to the direction of events, and as a result they are not being fully utilized and are destroying the balance of energy consumption in the network. Aiming at this problem, this paper proposes an improved self-organize map algorithm with the introduction of the probability-selection mechanism in Gibbs sampling to select victory nodes, thus optimizing the selection strategy for victory nodes. The simulation results show that the Improved Self-Organize Map (ISOM) algorithm can balance the energy consumption in the network and prolong the network lifetime. Compared with the traditional self-organize map algorithm, the adopting of the improved self-organize map algorithm can make the event driven coverage rate increase about 3%.

Open access
Plasma metabolic characterisation of dairy cows with inactive ovaries and oestrus during the peak of lactation

Abstract

Introduction

Differential metabolites (DMs) between cows with inactive ovaries (IO) and oestrous (E) cows were screened and metabolic pathways of DMs associated with IO were determined.

Material and Methods

Cows at 50 to 60 days (d) postpartum from an intensive dairy farm were randomly selected and allocated into an E group (n = 16) or an IO group (n = 16) according to a pedometer and rectal examinations. Their plasma samples were analysed by liquid chromatography–mass spectrometry (LC–MS) to compare plasma metabolic changes between the E and IO groups. Multivariate pattern recognition was used to screen the DMs in the plasma of IO cows.

Results

Compared with normal E cows, there were abnormalities in 20 metabolites in IO cows, including a significantly decreased content (VIP > 1, P < 0.05) of cholic acid, p-chlorophenylalanine, and arachidonic acid, and a significantly increased content (VIP > 1, P < 0.05) of tyramine, betaine, L-phenylalanine, L-glutamate, D-proline, L-alanine, and L-pyrophosphate. Five DMs (cholic acid, D-proline, L-glutamate, L-alanine, and L-pyroglutamic acid) with higher variable importance in projection (VIP) values between groups were validated by ELISA with blind samples of re-selected cows (IO, 50 to 60 d postpartum) and the validated results were consistent with the LC–MS results.

Conclusion

The 20 DMs in IO cows during the peak of lactation indicated that the pathogenesis of IO was involved in complex metabolic networks and signal transduction pathways. This study provides a basis for further exploration of the pathogenesis and prevention of IO in cows in the future.

Open access
Analysis on the Features of Acupuncture Recipes for Dysmenorrhea

Abstract

Objective: To analysis and extract the features of acupuncture recipes for dysmenorrhea.

Methods: By searching the major Chinese and English databases, we included the clinical literature with defined point-based recipes and analyzed the feature of those.

Results: (1) the most frequently selected points for dysmenorrhea in order were: San Yin Jiao(SP6), Guan Yuan (RN4), Zhong Ji (CV3), Qi Hai (CV6), Ci Liao (BL32), Di Ji (SP8), Shen Shu (BL23). (2) the major characteristics of point selection was combination of local points and distant points which located on Ren meridian and spleen meridian. (3) the major treatment methods were normal acupuncture, then acupuncture combined with moxibustion or auricular therapy, for the latter, were especially stressed and confirmed by many studies.

Conclusion: The acupuncture recipes for dysmenorrhea were usually made by consideration of combining local and distant points, utilizing multiple methods especially auricular therapy.

Open access
Effects of Electroacupuncture at Neiguan Acupoint on SOD and Mitochondrial Transmembrane Potential of Rabbits with Myocardial Ischemia-Reperfusion Injury

Abstract

Objective: To investigate the influence of electroacupuncture (EA) preconditioning at Nei Guan point (PC6) on the opening of mitochondrial permeability transition pore (MPTP) of rabbits with myocardial ischemia-reperrfusion injury, and its underlying mechanism that protects myocardium from injury.

Methods: 18 New Zealand rabbits were randomly assigned to pseudo-operation, model and EA groups, 6 in each group. Setting up models by ligation of coronary artery and electrically stimulating the rabbits in EA group 20 min per day in 5 days before modeling. Testing the activity of serum SOD with the method of actinochemistry, testing changes of mitochondrial transmembrane potential of myocardial cells with the method of synchronous spectrometry, using spectrophotometry to test the changes of the absorption of mitochondria at the spectrum of 520nm to check the opening of MPTP, and testing the apotosis of cells by means of terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL).

Results: Compared with model groups, the SOD activity of myocardial cells was significantly enhanced, and the apotosis index (AI) was reduced(P<0.01),mitochondrial transmembrane potential was significantly increased (P<0.05),absorption of mitochondria was significantly decreased(P<0.01).

Conclusion: EA can remarkably improve myocardial ischemia - reperfusion injury, and protect myocardium.

Open access