Circular RNA expression profiles and circRNA-miRNA-mRNA crosstalk in pre-eclamptic placenta / 中华妇产科杂志

Objective: To identify the expression profile of circular RNA (circRNA) in placenta of pre-eclampsia (PE) pregnant women by high-throughput sequencing, and to construct the circRNA-microRNA (miRNA)-messenger RNA (mRNA) interaction network, so as to reveal the related pathways and regulatory mechanisms of PE. Methods: The clinical data and placentas of 42 women with PE (PE group) and 30 normal pregnant women (control group) who delivered in West China Second University Hospital from November 2019 to June 2021 were collected. (1) High-throughput sequencing was used to establish the differentially expressed circRNA profiles in placental tissues of 5 pairs of PE group and the control group. (2) Real-time quantitative PCR (qRT-PCR) was used to verify the expression levels of 6 differentially expressed circRNAs in placental tissues of PE group and control group. (3) Bioinformatics analysis was used to predict the target miRNA and analyze the co-expressed mRNA to construct a competitive endogenous RNA (ceRNA) network. The differentially expressed circRNAs were analyzed by Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) pathways. (4) Logistic regression analysis, Pearson correlation and Kendall's tau-b correlation analysis were used to test the correlation between the three differentially expressed circRNAs and the risk of PE and clinical characteristics. (5) circRNA_05393 was selected for subsequent functional study. Small interfering RNA (siRNA) and overexpression plasmid were used to knock down or increase the expression level of circRNA_05393 in trophoblast cell line HTR-8/SVneo cells, respectively. Transwell assay was used to detect the migration and invasion ability of the trophoblasts in vitro. Cell counting kit-8 assay was used to detect the proliferation ability of the trophoblasts. Results: (1) Seventy-two differentially expressed circRNAs were identified by high-throughput sequencing, of which 35 were up-regulated and 37 were down-regulated. (2) qRT-PCR showed that compared with the control group, circRNA_00673 (1.306±0.168 vs 2.059±0.242; t=2.356, P=0.021) and circRNA_07796 (1.275±0.232 vs 1.954±0.230; t=2.018, P=0.047) were significantly increased, while circRNA_05393 (1.846±0.377 vs 0.790±0.094; t=3.138, P=0.002) was significantly decreased. (3) The circRNA-miRNA-mRNA interaction network contained 3 circRNAs, 8 miRNAs and 53 mRNAs. GO functional annotation analysis showed that the biological process was mainly enriched in iron ion homeostasis, membrane depolarization during action potential and neuronal action potential. In terms of cellular components, they were mainly enriched in cytoskeleton and membrane components. In terms of molecular function, they were mainly enriched in the activity of voltage-gated sodium channel and basic amino acid transmembrane transporter. KEGG pathway enrichment analysis showed that mRNAs in the interaction network were mainly enriched in complement and coagulation cascade, glycine, serine and threonine metabolism, p53 signaling pathway and peroxisome proliferators-activated receptors (PPAR) signaling pathway. (4) Logistic regression analysis showed that down-regulation of circRNA_05393 expression was a risk factor for PE (OR=0.044, 95%CI: 0.003-0.596; P=0.019). Correlation analysis showed that circRNA_05393 was significantly correlated with systolic blood pressure and diastolic blood pressure in PE pregnant women (both P<0.05). (5) Knock down or overexpression of circRNA_05393 significantly reduced or increased the migration and invasion abilities of HTR-8/SVneo cells (all P<0.05), but had no significant effect on the ability of tube formation and proliferation (all P>0.05). Conclusions: The construction of circRNA expression profile in placenta and the exploration of circRNA-miRNA-mRNA interaction network provide the possibility to reveal the regulatory mechanism of specific circRNA involved in PE. Inhibition of circRNA_05393 may induce the progression of PE by reducing the migration and invasion of trophoblasts.

Advances in animal models of chronic heart failure and its applications in traditional Chinese medicine / 中国中药杂志

Chronic heart failure(CHF) is a series of clinical syndromes in which various heart diseases progress to their end stage. Its morbidity and mortality are increasing year by year, which seriously threatens people's life and health. The diseases causing CHF are complex and varied, such as coronary heart disease, hypertension, diabetes, cardiomyopathy and so on. It is of great significance to establish animal models of CHF according to different etiologies to explore the pathogenesis of CHF and develop drugs to prevent and treat CHF induced by different diseases. Therefore, based on the classification of the etiology of CHF, this paper summarizes the animal models of CHF widely used in recent 10 years, and the application of these animal models in traditional Chinese medicine(TCM) research, in order to provide ideas and strategies for studying the pathogenesis and treatment of CHF, and provide ideas for TCM modernization research.

Pharmacological research progress of five classical prescriptions in treatment of chronic heart failure / 中国中药杂志

Chronic heart failure(CHF) is a comprehensive clinical syndrome caused by multiple factors that result in structural and/or functional abnormalities of the heart, leading to impaired ventricular contraction and/or relaxation functions. This medical condition represents the final stage of various cardiovascular diseases. In the treatment of CHF, multiple clinical studies have demonstrated the benefits of using traditional Chinese medicine(TCM) to control oxidative stress, inflammation, and apoptosis, thereby delaying ventricular remodeling and reducing myocardial fibrosis. In this study, common TCM syndromes in the diagnosis and treatment of CHF in recent years were reviewed and summarized. Five common treatment methods including benefiting Qi and activating blood circulation, enhancing Qi and nourishing Yin, warming Yang for diuresis, eliminating phlegm and dampness, rescuing from collapse by restoring Yang, and corresponding classic prescriptions in prevention and treatment of CHF were concluded under the guidance of TCM syndrome differentiation thinking. Meanwhile, research progress on the modern pharmacological effects of these classic prescriptions was systematically discussed, so as to establish a unique treatment system for CHF by classic prescriptions under the guidance of TCM syndrome differentiation theory and provide innovative diagnosis and treatment strategies for clinical CHF.

Transforming growth factor β signaling pathway regulating the function of follicle stimulating hormone in ovarian granulosa cells / 解剖学报

Objective To explore the interaction between follicle stimulating hormone (FSH) and transforming growth factor Beta (TGF-β) signaling pathway in rat ovarian granulosa cells. Methods The granulosa cells isolated from the follicles of 21 days SD rats. The experiments were divided into three groups: control group, FSH treated group and transforming growth factor beta receptor II (TGF-β R II) neutralizated group. Immunocytochemistry (ICC) and Western blotting were then used to locate and detect the expression level of TGF-β R II and proliferating cell nuclear antigen (PCNA). The proliferation index (PI), cell cycle and percentage of apoptotic cells were assessed by flow cytometry (FCM), and the level of estradiol (E2) was determined by ELISA. Results FSH increased the expression of PCNA and PI, changed the cell cycle and inhibited apoptosis of GCs, and these actions were reduced significantly when TGF- βsignaling pathway was inhibited (P0.05). Conclusion The effects of FSH on ovarian granulosa cells are partly affected by the TGF-β signaling pathway.

Research progress of natural alkaloids with analgesic activity / 中国中药杂志

Pain is a protective defense response of the body to harmful stimuli. Long-term pain not only seriously affects the body of the patient and brings great pain to the patient, but also brings huge economic burden to the patient's family and society. It has become one of the most serious problems affecting human health. At present, opioids and non-steroidal anti-inflammatory drugs(NSAIDs) are commonly used as painkillers, but they tend to cause a variety of adverse reactions or risk of addiction. To find and develop new analgesic drugs, which are safer and more effective, has become the hot spot and difficulty in medical research. A variety of alkaloids derived from terrestrial plants, microorganisms, marine organisms and fungi have been an important source of clinical analgesic medicines. Various alkaloids have been proved to have good analgesic effects, such as morphine and the related to opioids, the main analgesic active components from Corydalis Rhizoma and Aconiti Lateralis Radix Praeparata. Here we summarized the research progress of natural alkaloids with analgesic activity, in order to provide reference for the research and development of analgesic drugs based on natural products.

Research progress of natural non-alkaloids with analgesic activity / 中国中药杂志

Pain is a complex, unpleasant feeling and emotional experience associated with actual or potential tissue damage, and manifests itself in certain autonomous psychological and behavioral responses. The commonly used opioid and non-steroidal anti-inflammatory analgesics(NSAIDs) may cause adverse reactions to the kidney, liver, cardiovascular or gastrointestinal system and cause problems of drug abuse. Therefore, it is necessary to study new analgesic drugs with less side effects and significant analgesic effects. A variety of natural products derived from terrestrial plants, microorganisms, marine organisms and fungi have been an important source of clinical medicines and provide an inexhaustible resource for the development and innovation of modern medicines. Therefore, this paper mainly reviews the natural non-alkaloids with analgesic activity in order to provide reference for the research and development of analgesic drugs derived from natural products.

Research progress on animal models of chronic pain and its application in traditional Chinese medicine research / 中国中药杂志

The classification of chronic pain is complex and its pathogenesis is not clear, which led to the limited progress of treatment measures.Traditional Chinese medicine(TCM) has certain advantages in the treatment of chronic pain, and its mechanism needs further exploration. The ideal animal model is helpful to elucidate the key mechanism of the occurrence and development of chronic pain and play an important role in the discovery of new drug targets, the development of new therapies and the research on the analgesic mechanism of TCM.In recent years, many scholars at home and abroad have done a lot of research to explore the pathogenesis of chronic pain and the mechanism of TCM, which have achieved some results. On this basis, this study summarizes the selection of experimental animals for chronic pain and the commonly evaluation methods of animal models. According to the latest international classification of diseases, this review organizes the induced methods, evaluation indicators, advantages and disadvantages of seven kinds of chronic pain animal models, such as chronic primary pain, chronic cancer-related pain and so on. Next, this review introduces the chronic pain animal models commonly used in TCM research, in order to provide guidance for the targeted selection of animal models when carrying out relevant experiments in the future.

Chemical constituents from ethyl acetate soluble extraction of Litsea cubeba / 中国中药杂志

Chemical investigation on the constituents of the ethyl acetate soluble extraction of Litsea cubeba has resulted in the isolation and structure elucidation of thirty compounds, including one sesquiterpene(1), four monoterpenes(2-5), two γ-butyrolactone derivatives(6 and 7), seven tyramine derivatives(8-14), fifteen aromatic compounds(15-29), and one pyrone derivative(30) via various chromatographic techniques and spectroscopic data analysis(MS, IR, 1 D and 2 D NMR). Compounds 1-7, 13 and 14 were obtained from the genus Litsea for the first time.

Effect of peripheral vision control technology in the development of juvenile myopia / 国际眼科杂志(Guoji Yanke Zazhi)

AlM:To investigate the effect of peripheral vision control technology for delaying the development of juvenile myopia.METHODS:A total of ninty-nine cases of 12 ~18 year-old myopic patients were randomly divided into two groups. The experimental group was peripheral vision control technology group whose members wore the special lenses which can help correct the hypermetropic defocus of peripheral retina. The other was control group whose members wore ordinary monofocal lenses. All the subjects needed to accept re-examination every 3mo and be recorded the data of dioptre, corneal curvature and axial length.RESULTS: After 18mo, the dioptre and axial length of two groups had increased in varying degree. But the data's different quantity of the corneal curvature in each group had no statistical significance ( P > 0. 05 ). Themyopia deepen quantity in experimental group was-0. 65±0. 65D and its axial growth was 0. 23±0. 22mm, and the myopia deepen quantity in control group was -1. 17 ± 0. 50D and its axial growth was 0. 41 ± 0. 17mm. Under the circumstance of valid data, the increment of myopia and axial length in experimental group was lower than that in control group (P<0. 05).CONCLUSlON: Peripheral vision control technology can delay the development of juvenile myopia effectively.

Using corneal topography design personalized cataract surgery programs / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To investigate how to design personalized cataract surgery programs to achieve surgical correction of preoperative corneal astigmatism with surgical astigmatism under the guidance of corneal topography, improve postoperative visual quality and reduce the cost of treatment. METHODS: Totally 202 cases ( 226 eyes ) cataract patients were divided into randomized treatment group and individualized treatment group. According to the method and location of the incision, randomized treatment group were divided into 8 groups. Surgical astigmatism after different incision were calculated with the use of preoperative and postoperative corneal astigmatism through vector analysis method. Individualized treatment groups were designed personably for surgical method with reference of every surgically induced astigmatism, the surgical method chooses the type of surgical incision based on close link between preoperative corneal astigmatism and surgically induced astigmatism, and the incision was located in the steep meridian. The postoperative corneal astigmatism of individualized treatment group was observed. RESULTS: Postoperative corneal astigmatism of individualized treatment group were lower than that of 3.0mm clear corneal tunnel incision in the randomized treatment group, there were statistically significance difference, while with 3. 0mm sclera tunnel incision group there were no statistically significance difference. After 55. 8% of patients with the use of individualized surgical plan could undergo the operation of extracapsular cataract extraction with relatively low cost and rigid intraocular lens implantation, the per capita cost of treatment could be reduced. CONCLUSION: Personalized cataract surgery programs are designed to achieve surgical correction of preoperative corneal astigmatism under the use of corneal topography, improve postoperative visual quality and reduce the cost of treatment.

Oleanolic acid-induced apoptosis and its relation with intracellular calcium in human lung adenocarcinoma A549 cells / 西安交通大学学报·英文版

Objective: To investigate the effect of oleanolic acid (OA) on apoptosis, correlation between apoptosis and intracellular calcium, and its mechanism in human lung adenocarcinoma cell line A549. Methods: Human lung adenocarcinoma A549 cells were incubated in vitro and assigned with OA concentrations of 0, 10, 20 and 40 μg/mL. The apoptosis status of A549 cell line was detected with Annexin V-FITC/PI by flow cytometry (FCM) ; fluorescence intensity (FI) of A549 cells was assessed and the level of intracellular calcium was calculated at 24 hour of OA intervention. The relation between apoptosis and calcium FI was illustrated by curve fitting. Results: FCM showed that 10, 20 and 40 μg/mL of OA could induce A549 cell apoptosis, which followed a concentration-effect pattern; 24-hour intervention with 20 μg/mL and 40 μg/mL OA showed increased A549 cell apoptosis, and was significantly different from that with 0 μg/mL OA (P<0.01). The FI of intracellular calcium concentration in 10, 20 and 40 μg/mL OA groups was significantly higher than that in 0 μg/mL group after 24 hours' intervention, and the FI showed a trend of increase with increased OA concentration (P<0.01). Curve fitting showed a significant correlation between apoptosis rate and intracellular calcium concentration in A549 cells (r=0.981, P<0.01). Regression equation was Y = 0.508X-1.627. Conclusion: OA plays a role in inducing apoptosis of human lung adenocarcinoma cells in a concentration-dependent manner. The OA-induced apoptosis is responsible for intracellular calcium overload of the tumor.

Effects of electroacupuncture combined with behavior therapy on intelligence and behavior of children of autism / 中国针灸

<p><b>OBJECTIVE</b>To find out an effective therapy for autism.</p><p><b>METHODS</b>Sixty children of autism were randomly divided into an electroacupuncture (EA) plus behavior therapy group and a behavior therapy group, 30 cases in each group. The patients in the two groups were treated with routine behavior, with EA at Baihui (GV 20), Sishencong (EX-HN 1), Shenting (GV 24), Benshen (GB 13), Yintang (EX-HN 3), Naohu (GV 17), Naokong (GB 19), Neiguan (PC 6) and scalp acupuncture at Speech Areas I, II, III added for the EA plus behavior therapy group. Their therapeutic effects were observed, and the picture and vocabulary scale (PPVT) and behavior ability were detected.</p><p><b>RESULTS</b>The total effective rate was 86.7% in the EA plus behavior therapy group which was better than 56.7% of the behavior therapy group, and had significant enhancement in sensation, association, body, and ability of self-care (P < 0.05) and was better than the behavior therapy group in sensation, body and self-care factors, with no significantly improvement in the scores of PPVT in the two groups (P > 0.05).</p><p><b>CONCLUSION</b>EA combined with behavior therapy can significantly improve clinical symptoms of autism, but does not improve intelligence.</p>