Extended Very-High-Energy Gamma-Ray Emission Surrounding PSR J0622+3749 Observed by LHAASO-KM2A

We report the discovery of an extended very-high-energy (VHE) gamma-ray source around the location of the middle-aged (207.8 kyr) pulsar PSR J0622+3749 with the Large High-Altitude Air Shower Observatory (LHAASO). The source is detected with a significance of 8.2σ for E>25  TeV assuming a Gaussian template. The best-fit location is (right ascension, declination) =(95.47°±0.11°,37.92°±0.09°), and the extension is 0.40°±0.07°. The energy spectrum can be described by a power-law spectrum with an index of -2.92±0.17_{stat}±0.02_{sys}. No clear extended multiwavelength counterpart of the LHAASO source has been found from the radio to sub-TeV bands. The LHAASO observations are consistent with the scenario that VHE electrons escaped from the pulsar, diffused in the interstellar medium, and scattered the interstellar radiation field. If interpreted as the pulsar halo scenario, the diffusion coefficient, inferred for electrons with median energies of ∼160  TeV, is consistent with those obtained from the extended halos around Geminga and Monogem and much smaller than that derived from cosmic ray secondaries. The LHAASO discovery of this source thus likely enriches the class of so-called pulsar halos and confirms that high-energy particles generally diffuse very slowly in the disturbed medium around pulsars.

Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources

The extension of the cosmic-ray spectrum beyond 1 petaelectronvolt (PeV; 10¹⁵ electronvolts) indicates the existence of the so-called PeVatrons-cosmic-ray factories that accelerate particles to PeV energies. We need to locate and identify such objects to find the origin of Galactic cosmic rays¹. The principal signature of both electron and proton PeVatrons is ultrahigh-energy (exceeding 100 TeV) γ radiation. Evidence of the presence of a proton PeVatron has been found in the Galactic Centre, according to the detection of a hard-spectrum radiation extending to 0.04 PeV (ref. ²). Although γ-rays with energies slightly higher than 0.1 PeV have been reported from a few objects in the Galactic plane^3-6, unbiased identification and in-depth exploration of PeVatrons requires detection of γ-rays with energies well above 0.1 PeV. Here we report the detection of more than 530 photons at energies above 100 teraelectronvolts and up to 1.4 PeV from 12 ultrahigh-energy γ-ray sources with a statistical significance greater than seven standard deviations. Despite having several potential counterparts in their proximity, including pulsar wind nebulae, supernova remnants and star-forming regions, the PeVatrons responsible for the ultrahigh-energy γ-rays have not yet been firmly localized and identified (except for the Crab Nebula), leaving open the origin of these extreme accelerators.

Global Polarization of Ξ and Ω Hyperons in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

Global polarization of Ξ and Ω hyperons has been measured for the first time in Au+Au collisions at sqrt[s_{NN}]=200  GeV. The measurements of the Ξ^{-} and Ξ[over ¯]^{+} hyperon polarization have been performed by two independent methods, via analysis of the angular distribution of the daughter particles in the parity violating weak decay Ξ→Λ+π, as well as by measuring the polarization of the daughter Λ hyperon, polarized via polarization transfer from its parent. The polarization, obtained by combining the results from the two methods and averaged over Ξ^{-} and Ξ[over ¯]^{+}, is measured to be ⟨P_{Ξ}⟩=0.47±0.10(stat)±0.23(syst)% for the collision centrality 20%-80%. The ⟨P_{Ξ}⟩ is found to be slightly larger than the inclusive Λ polarization and in reasonable agreement with a multiphase transport model. The ⟨P_{Ξ}⟩ is found to follow the centrality dependence of the vorticity predicted in the model, increasing toward more peripheral collisions. The global polarization of Ω, ⟨P_{Ω}⟩=1.11±0.87(stat)±1.97(syst)% was obtained by measuring the polarization of daughter Λ in the decay Ω→Λ+K, assuming the polarization transfer factor C_{ΩΛ}=1.

Study on the Mechanism of Jiawei Shengjiang Powder in Improving Male Asthma-Induced Asthenospermia Based on Network Pharmacology and Bioinformatics

Background

Jiawei Shengjiang Powder (JWSJP) is a classical Chinese medicinal formula, which has been widely applied in the treatment of asthma and complications for many years due to its curative effect.

Aim

To verify the effect of JWSJP in improving abnormal sperm motility caused by asthma and to explore its potential mechanism.

Materials and Methods

The active compounds of JWSJP were obtained from high performance liquid chromatography tandem mass spectrometry and the Traditional Chinese Medicine System Pharmacology. The key active components and targets of JWSJP were predicted based on network pharmacological analysis and bioinformatics research. Rats were randomly divided into normal, model and treatment groups. The rat model of allergic asthma was induced by intraperitoneal injection of ovalbumin solution. The experiment judged improvement of semen quality by evaluating sperm motility, and detected the expression of related proteins in testicular tissue of Sprague-Dawley rats by RT-qPCR and Western blot methods. Hematoxylin and eosin (HE) staining was used to observe the changes in testicular tissue structure in rats.

Results

Through the analysis of network pharmacology and bioinformatics, it was found that beta-sitosterol, quercetin, gallic acid, pelargonidin and kaempferol were the key active components of Jiawei Shengjiang Powder. Tumor necrosis factor (TNF), interleukin-6 (IL-6) and insulin (INS) genes are crucial targets of JWSJP in the treatment of spermatogenic dysfunction caused by acute asthma. After 8 weeks of intervention, compared with the model group, the treatment group had significantly improved sperm motility (P < 0.05). There were significant differences in TNF, IL6, and INS proteins in the treatment group, and the HE staining of testicular tissue structure in the treatment group was significantly improved.

Conclusion

JWSJP can improve the abnormal sperm motility induced by asthma, and its mechanism may be related to the expression of related proteins and mRNA of TNF, IL6, and INS.

Nonmonotonic Energy Dependence of Net-Proton Number Fluctuations

Nonmonotonic variation with collision energy (sqrt[s_{NN}]) of the moments of the net-baryon number distribution in heavy-ion collisions, related to the correlation length and the susceptibilities of the system, is suggested as a signature for the quantum chromodynamics critical point. We report the first evidence of a nonmonotonic variation in the kurtosis times variance of the net-proton number (proxy for net-baryon number) distribution as a function of sqrt[s_{NN}] with 3.1  σ significance for head-on (central) gold-on-gold (Au+Au) collisions measured solenoidal tracker at Relativistic Heavy Ion Collider. Data in noncentral Au+Au collisions and models of heavy-ion collisions without a critical point show a monotonic variation as a function of sqrt[s_{NN}].

Effect of leech-centipede medicine on improving erectile function in DIED rats via PKC signalling pathway-related molecules

ETHNOPHARMACOLOGICAL RELEVANCE

Leeches (pinyin name Shui Zhi; Latin scientific name Hirudo; Hirudinea; Hirudinidae) and centipedes (pinyin name Wu Gong; Latin scientific name Scolopendridae; Chilopoda; Scolopendridae) are traditional Chinese medicines, and they belong to the family entomology. A combination of leech and centipede is used as an effective medicine to promote blood circulation and remove blood stasis in traditional Chinese medicine, and "leech-centipede" medicine has been used in many prescriptions to treat diabetic vascular disease, including diabetic erectile dysfunction (DIED). However, its specific mechanism remains unclear and requires in-depth study.

AIM OF THE STUDY

This study aimed to investigate the mechanism of "leech-centipede" medicine to improve erectile dysfunction-associated diabetes by detecting PKC pathway-related molecules.

MATERIALS AND METHODS

The active ingredients of "leech-centipede" medicine were identified using high performance liquid chromatography (HPLC). Fifty male SPF rats were injected with streptozotocin to induce the DM model. Eight weeks later, the DMED model was validated with apomorphine. The DIED rats were divided into five groups-T,P,DD,DZ, and DG-and were separately treated with tadalafil, pathway inhibitor LY333531 and low-, medium-, and high-dose "leech-centipede" medicine for 8 weeks. After treatment, the blood glucose level was measured, erectile function with apomorphine was assessed, the LOX-1, sE-selectin, sICAM-1, SOD, and MDA in serum was evaluated by enzyme-linked immunosorbent assay, and flow cytometry was performed. After the collection of penile tissue, the related protein and mRNA expression was assessed by Western blotting and PCR, and the tissue and ultrastructure were analysed by HE staining, immunohistochemistry and scanning electron microscopy.

RESULTS

After treatment, the erectile function of rats was significantly improved in the T,P,DD,DZ, and DG groups compared with that in the model group. Thus, "leech-centipede" medicine can significantly reduce the levels of LOX-1, sE-selectin, sICAM-1, EMPs and CD62P to protect vascular endothelial function and anti-platelet activation, improving DIED rat erectile function. Additionally, "leech-centipede" medicine can increase SOD expression and decrease MDA expression, reducing the possibility of oxidative stress injury in DIED rats and improving the antioxidant capacity. Moreover, "leech-centipede" therapy can dramatically reduce the protein and mRNA expression of DAG, PKCβ, NF-κB, and ICAM-1, improve vascular endothelial injury in DIED rats and inhibit abnormal platelet activation.

CONCLUSION

"leech-centipede" medicine can improve erectile dysfunction by inhibiting the expression of PKC pathway-related molecules in DIED rats and protects endothelial function and anti-platelet activation.

[Advances on the management of renal lesion in glycogen storage disease type I]

Glycogen storage disease (GSD) is a group of congenital defects involved in the synthesis and decomposition of glycogen. As the most common type, GSD I is caused by mutations in glucose-6-phophate catalytic subunit (type Ia), or glucose-6-phosphate transporter (type Ib). Both defects can lead to hypoglycemia and accumulation of glycogen in the liver and kidney. So renal lesion is one of the main complications, which may manifest as increased glomerular filtration rate in the early stage, followed by microalbuminuria and decreased glomerular filtration rate and proteinuria. Subsequently it may progress into renal interstitial fibrosis, glomerulosclerosis, and eventually renal failure. Early detection and timely intervention of renal impairment are very important. Here we mainly describe the progress of diagnosis and treatment on the kidney disease of glycogen storage disease type I.

[Clinical analysis of liver chemistries in children and adolescent with 2019-nCoV infection]

Objective: To describe the clinical features of liver involvement in children and adolescent with 2019-nCoV infection. Methods: The clinical data of 77 hospitalized cases admitted to the Children's Hospital of Fudan University were collected from January 19 to November 28, 2020. The characteristics and risk factors of abnormal liver chemistries in children with laboratory-confirmed 2019-nCoV infection were analyzed. Results: Of the 77 cases, 44 were male (57.1%) and 33 were female (42.9%), with a median age of 10 years. 27(35.1%) were asymptomatic, 28(36.4%) had mild illness, 22(28.6%)had non-severe pneumonia. Hydroxychloroquine was used in 7 cases. Of the 75 children without underlying diseases, alanine aminotransferase was elevated in 1 case (1.5%, during hydroxychloroquine therapy), aspartate aminotransferase was elevated in 7 cases (10.3%), alkaline phosphatase was elevated in 7 cases (28%), and total bilirubin, direct bilirubin, albumin, international normalized ratio were in normal range. There was no statistical difference between the pneumonia group and the non-pneumonia group in term of liver chemistries (P > 0.05), same as between the elevated erythrocyte sedimentation rate group and the normal group. There was no aggravation of liver injury in the child with biliary atresia. The child with epilepsy showed no abnormal liver chemistries after infection. Conclusion: Children with 2019-nCoV infection had mild clinical symptoms with few cases of liver injury. The abnormal liver chemistries in children with COVID-19 infection may be related to the underlying disease and the use of antiviral drugs.

[Comparison of clinical characteristics of patients with different types of laryngopharyngeal reflux disease]

Objective: To compare the clinical characteristics of patients with different type of laryngopharyngeal reflux disease in order to study the effect of non-acid reflux on laryngopharyngeal reflux disease. Methods: From January 2015 to January 2020, 349 inpatients or outpatients suspected of having laryngopharyngeal reflux underwent 24-hour multichannel intraluminal impedance pH monitoring (MII-pH). There were 303 male and 46 female patients, with an average age of 56.03 years old ranged from 25 to 81 years old. The reflux symptom index (RSI)and reflux findings score(RFS)were recorded before MII-pH monitoring. The number of acid reflux events and non-acid reflux events in hypopharynx were counted. It was defined mainly acid reflux type when the ratio of acid reflux to all reflux events was greater than 50%, mainly non-acid reflux type when the ratio of non-acid reflux to all reflux events was greater than 50%. The clinical characteristics of patients with different type of reflux were compared. SPSS 19.0 software was used for statistical analysis, and multiple independent samples were compared between groups. The quantitative data were analyzed by multivariate analysis of variance, and the counting data were analyzed by chi-square test, the difference was statistically significant when P<0.05. Results: The 24-hour MII-pH showed that there were 90 patients with no reflux events, 51 patients with mainly acid reflux type, 198 patients with mainly non-acid reflux type and 10 patients with equal acid reflux events and non-acid reflux events. Statistics showed that the RSI(10.72±4.40), RFS(7.70±2.73) and the average number of reflux events(0) in the group without reflux events were significantly lower than those in patients with mainly acid reflux type (RSI 13.16±6.62,RFS 10.08±3.03,average number of reflux events 5.33±3.15,P<0.05) and mainly non-acid reflux type(RSI 13.25±5.54,RFS 8.81±2.54,average number of reflux events 7.93±5.26, P<0.05). There was no significant difference in RSI between the mainly non-acid reflux type group and the mainly acid reflux type group, but the RFS of the mainly non-acid reflux type group was significantly lower than that of the mainly acid reflux type group. The average number of reflux events in the mainly non-acid reflux group was significantly higher than that in the mainly acid reflux type group (P<0.05). Conclusion: The results show that non-acid reflux plays a certain role in laryngopharyngeal reflux disease, but the effect of acid reflux is greater.

[Therapeutic effects of endoscopic posterior cordotomy for bilateral vocal cord paralysis]

Objective: To evaluate the efficacy of the endoscopic bilateral posterior transverse partial cordotomy in patients with upper airway obstruction due to bilateral vocal fold paralysis. Methods: A retrospective analysis of 48 cases of upper airway obstruction due to bilateral vocal fold paralysis, who were admitted to Department of Otolaryngology Head and Neck Surgery, the Sixth Medical Center of Chinese PLA General Hospital from July 2009 to July 2019, was performed, including 13 males and 35 females. Patients' ages ranged from 27 to 83 years old. All patients underwent bilateral vocal fold posterior resection. Results: Among the 48 patients, 1 patient was lost to follow-up, and the remaining 47 patients were followed up for 5 months to 10 years . None of the 47 patients had a recurrence or severe complications. 89.58% (43/48) patients reconstructed a reliable and effective airway and 88.89% (40/45) patients were decannulated in 1-3 months postoperatively, with the median decannulation time of 1 month. Recovery rate of swallowing function and satisfactory pronunciation were 97.92% (47/48) and 95.35% (41/43) respectively. Conclusions: Endoscopic bilateral posterior transverse partial cordotomy can establish a reliable and effective airway and maximize the protection of swallowing and voice functions. At the same time, it is a safe, reliable, simple and minimally invasive treatment option.

Large Isospin Asymmetry in ^{22}Si/^{22}O Mirror Gamow-Teller Transitions Reveals the Halo Structure of ^{22}Al

β-delayed one-proton emissions of ^{22}Si, the lightest nucleus with an isospin projection T_{z}=-3, are studied with a silicon array surrounded by high-purity germanium detectors. Properties of β-decay branches and the reduced transition probabilities for the transitions to the low-lying states of ^{22}Al are determined. Compared to the mirror β decay of ^{22}O, the largest value of mirror asymmetry in low-lying states by far, with δ=209(96), is found in the transition to the first 1^{+} excited state. Shell-model calculation with isospin-nonconserving forces, including the T=1, J=2, 3 interaction related to the s_{1/2} orbit that introduces explicitly the isospin-symmetry breaking force and describes the loosely bound nature of the wave functions of the s_{1/2} orbit, can reproduce the observed data well and consistently explain the observation that a large δ value occurs for the first but not for the second 1^{+} excited state of ^{22}Al. Our results, while supporting the proton-halo structure in ^{22}Al, might provide another means to identify halo nuclei.

[Transient infantile hypertriglyceridemia caused by GPD1 deficiency: report of two cases and literature review]

Objective: To investigate the clinical phenotype and genotype of transient infantile hypertriglyceridemia (HTGTI). Methods: The clinical data of two HTGTI children, diagnosed at Children's Hospital of Fudan University from July 2019 to January 2020, were collected and analyzed retrospectively. The literature up to 25th January 2020 were searched in PubMed, CNKI and Wanfang databases with the key words of "hypertriglyceridemia" and "glycerol phosphate dehydrogenase-1 (GPD1)". Results: Two children, including a 5-month-old female and a 13-month-old male, who presented with hepatomegaly, hypertriglyceridemia, transaminase elevation and hepatic steatosis, were admitted to the hospital. Gene detection found compound heterozygous variation of GPD1. After a low-fat diet with enriched medium-chain fatty acids, their plasma triglyceride level were significantly decreased, and finally normalized in case 2. Literature review found 17 patients with GPD1 gene variation reported in 5 papers, including 16 HTGTI cases and one case of different phenotype. Most of the cases presented with hepatomegaly, hypertriglyceridemia and transaminase elevation, while some had developmental retardation, splenomegaly, hypoglycemia, obesity and insulin resistance. The c.361-1G>C was the most common variation of GPD1. Conclusions: HTGTI caused by GPD1 deficiency is mainly manifested with hepatomegaly, hypertriglyceridemia, transaminase elevation as well as hepatic steatosis and fibrosis. The most common variation of GPD1 is c.361-1G>C.

High resolution computed tomography for the diagnosis of 2019 novel coronavirus (2019-nCoV) pneumonia: a study from multiple medical centers in western China

Background

To evaluate the role of high-resolution computed tomography (HRCT) in the diagnosis of 2019 novel coronavirus (2019-nCoV) pneumonia and to provide experience in the early detection and diagnosis of 2019-nCoV pneumonia.

Methods

Seventy-two patients confirmed to be infected with 2019-nCoV from multiple medical centers in western China were retrospectively analyzed, including epidemiologic characteristics, clinical manifestations, laboratory findings and HRCT chest features.

Results

All patients had lung parenchymal abnormalities on HRCT scans, which were mostly multifocal in both lungs and asymmetric in all patients, and were mostly in the peripheral or subpleural lung regions in 52 patients (72.22%), in the central lung regions in 16 patients (22.22%), and in both lungs with "white lung" manifestations in 4 patients (5.56%). Subpleural multifocal consolidation was a predominant abnormality in 38 patients (52.78%). Ground-glass opacity was seen in 34 patients (47.22%). Interlobular septal thickening was found in 18 patients, 8 of whom had only generally mild thickening with no zonal predominance. Reticulation was seen in 8 patients (11.11%), and was mild and randomly distributed. In addition, both lungs of 28 patients had 2 or 3 CT imaging features. Out of these 72 patients, 36 were diagnosed as early stage, 32 patients as progressive stage, and 4 patient as severe stage pneumonia. Moreover, the diagnostic accuracy of HRCT features combined with epidemiological history was not significantly different from the detection of viral nucleic acid (all P >0.05).

Conclusions

The HRCT features of 2019-nCoV pneumonia are characteristic to a certain degree, which when combined with epidemiological history yield high clinical value in the early detection and diagnosis of 2019-nCoV pneumonia.

Effects of posthatch feed deprivation on residual yolk absorption, macronutrients synthesis, and organ development in broiler chicks

The aim of the research was to evaluate the dynamic changes of early posthatch starvation on residual yolk absorption, synthesis of macronutrients (protein, lipid, and glycogen), and organ development in broiler chicks. A total of 720 1-day-old chicks (Lingnan Yellow) were randomly assigned to 3 treatments: group A (nonfasted), group B (fasting for 24 h after placement), and group C (fasting for 48 h after placement). The trial lasted for 168 h, and water was provided ad libitum all the time. Sampling was performed at 0, 24, 48, 72, 120, and 168 h. Nonfasting (group A) promoted (P < 0.05) the absorption of amino acids, fatty acids, mineral elements, protein, and maternal antibody in the residual yolk of broiler chicks. The concentration of insulin-like growth factor 1 in plasma and the liver was higher (P < 0.05) in group A. Nonfasting enhanced (P < 0.05) the synthesis of protein and glycogen in the breast muscle and liver; the relative weights of the liver, pancreas, and spleen; and body weight, but retarded (P < 0.05) the synthesis of triglyceride in the liver. The results indicated that nonfasting (group A) after placement promoted the absorption of residual yolk and synthesis of protein and glycogen in the breast muscle and liver, whereas early feed deprivation promoted the synthesis of lipid in the liver. Thereby, nonfasting after placement promoted organ development and body growth of broiler chicks.

Positive-Parity Linear-Chain Molecular Band in ^{16}C

An inelastic excitation and cluster-decay experiment ^{2}H(^{16}C,^{4}He+^{12}Be or ^{6}He+^{10}Be)^{2}H was carried out to investigate the linear-chain clustering structure in neutron-rich ^{16}C. For the first time, decay paths from the ^{16}C resonances to various states of the final nuclei were determined, thanks to the well-resolved Q-value spectra obtained from the threefold coincident measurement. The close-threshold resonance at 16.5 MeV is assigned as the J^{π}=0^{+} band head of the predicted positive-parity linear-chain molecular band with (3/2_{π}^{-})^{2}(1/2_{σ}^{-})^{2} configuration, according to the associated angular correlation and decay analysis. Other members of this band were found at 17.3, 19.4, and 21.6 MeV based on their selective decay properties, being consistent with the theoretical predictions. Another intriguing high-lying state was observed at 27.2 MeV which decays almost exclusively to ^{6}He+^{10}Be(∼6  MeV) final channel, corresponding well to another predicted linear-chain structure with the pure σ-bond configuration.

First Measurement of Λ_{c} Baryon Production in Au+Au Collisions at sqrt[s_{NN}]=200 GeV

We report on the first measurement of the charmed baryon Λ_{c}^{±} production at midrapidity (|y|<1) in Au+Au collisions at sqrt[s_{NN}]=200  GeV collected by the STAR experiment at the Relativistic Heavy Ion Collider. The Λ_{c}/D^{0} [denoting (Λ_{c}^{+}+Λ_{c}^{-})/(D^{0}+D[over ¯]^{0})] yield ratio is measured to be 1.08±0.16  (stat)±0.26  (sys) in the 0%-20% most central Au+Au collisions for the transverse momentum (p_{T}) range 3<p_{T}<6  GeV/c. This is significantly larger than the pythia model calculations for p+p collisions. The measured Λ_{c}/D^{0} ratio, as a function of p_{T} and collision centrality, is comparable to the baryon-to-meson ratios for light and strange hadrons in Au+Au collisions. Model calculations including coalescence hadronization for charmed baryon and meson formation reproduce the features of our measured Λ_{c}/D^{0} ratio.

Acupuncture combined with tamsulosin hydrochloride sustained-release capsule in the treatment of chronic prostatitis/chronic pelvic pain syndrome: A study protocol for a randomized controlled trial

BACKGROUND

Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a common urinary system disease in men. As part of traditional Traditional Chinese medicine, acupuncture has been widely used in clinical practice. In order to evaluate the exact effect of acupuncture on the clinical efficacy of CP/CPPS, this experiment uses randomized controlled experiments.

METHODS/DESIGN

This pragmatic randomized controlled trial will recruit 166 patients who are diagnosed with CP/CPPS. Simple randomization to conventional drug treatment with a 1:1 allocation ratio will be used. Ten 30-minute acupuncture sessions will be provided to patients assigned to the Intervention group. All participants will continue to receive conventional drug treatment. The selection of outcomes will be evaluated by Health's Symptom Score Index (NIH-CPSI) score at week 4.

DISCUSSION

This trial may provide evidence regarding the clinical effectiveness, safety, and cost-effectiveness of acupuncture for patients with CP/CPPS.

TRIAL REGISTRATION

ClinicalTrials.gov, ChiCTR1900021132, Registered on 29 January 2019.

[microRNA-106a-5p regulated the funcation human umbilical vein endothelial cells by targeting STAT3]

Objective: To investigate the effects of miR-106a-5p on the proliferation and migration of vascular endothelial cells, and the possible target gene of miR-106a-5p in endothelial cells. Methods: Human umbilical vein endothelial cells (HUVEC) were cultured in vitro, and the expression of mir-106a-5p in HUVECs was detected by real-time fluorescent quantitative polymerase chain reaction (RT-qPCR). Cell counting kit-8 (CCK-8) and wound healing assays were used to detected the proliferation and migration of HUVECs respectively.Dual luciferase repoter assay was used to identify the possible target gene of miR-106a-5p--STAT3. Results: mir-106a-5p inhibited the proliferation function of HUVECs (F=13.62, P<0.01). And mir-106a-5p expressed the migration of HUVEC,the closure rate in the mimic group was reduced after 12 h and 24 h of scratching (49.93/31.31) (χ(2)=8.240, P<0.05), (78.87/44.80) (χ(2)=10.50, P<0.01). The direct target gene of mir-106a-5p was STAT3, and miR-106a-5p regulated the expression of STAT3 through post-transcriptionally controlling. Conclusion: mir-106a-5p could inhibit proliferation and migration of HUVEC, and the possible target gene was STAT3.

Acupuncture on treating asthma: A protocol for systematic review and meta analysis

BACKGROUND

Asthma is one of the most common chronic diseases in the world, with approximately 300 million asthma patients worldwide. The mortality rate of asthma is 1.6 to 36.7 / 100,000 people, and China has become one of the countries with the highest asthma death rate in the world. Asthma is a chronic allergic airway inflammatory disease. Patients with this disease may have symptoms such as cough, wheezing, and difficulty breathing. For many years, Western medicine has mainly used anti-inflammatory, anti-bronchial spasm, asthma, cough and oxygen to treat this disease, but the effect is not good. Clinical studies in recent years have found that the use of acupuncture in the treatment of bronchial asthma has a good clinical application prospect. This study was conducted to study the effect of using acupuncture to treat asthma.

METHODS AND ANALYSIS

We will search for PubMed, Cochrane Library, AMED, EMbase, WorldSciNet; Nature, Science online and China Journal Full-text Database (CNKI), China Biomedical Literature CD-ROM Database (CBM), and related randomized controlled trials included in the China Resources Database. The time is limited from the construction of the library to November 2019. We will use the criteria provided by Cochrane 5.1.0 for quality assessment and risk assessment of the included studies, and use the Revman 5.3 and Stata13.0 software for meta-analysis of the effectiveness, recurrence rate, and symptom scores of asthma.

ETHICS AND DISSEMINATION

This systematic review will evaluate the efficacy and safety of acupuncture for asthma. Because all of the data used in this systematic review and meta-analysis has been published, this review does not require ethical approval. Furthermore, all data will be analyzed anonymously during the review process Trial.

Research of stroke combined hyperlipidemia-induced erectile dysfunction in rat model

Objective: The study was aimed to evaluate the influences of erectile dysfunction (ED) in a rat model of stroke combined with hyperlipidemia (HLP). Methods: Male Sprague-Dawley rats were divided into control and hyperlipidemia (HLP) groups. HLP model was constructed by feeding with high-fat and cholesterol diets. Serum levels of total cholesterol (TC), low density lipoprotein (LDL), high density lipoprotein (HDL), triglyceride (TG), and non-HDL were identified to check the model was success. Stroke model was established by FeCl₃. ICP/MAP value was detected to evaluate the erectile function of rats. Serum level of lipoproteins and the expressions of endothelial nitric oxide synthase (eNOS), vascular endothelial growth factor (VEGF) were detected by ELISA. Hematoxylin-eosin (HE) staining of corpus cavernosum and measurement of penis length were utilized to assessment erectile function. Western blot was used. Results: TC, TG, LDL, and non-HDL-C in serum were up-regulated, while HDL level was attenuated. After treatment, the serum lipid level recovered. From the ICP/MAP values, the erectile function of both two treatment groups recovered. The expression of PDE5A was up-regulated, while the levels of eNOS and cGMP were suppressed after surgery. The length of penis was decreased, and corpus cavernosum was damaged following HLP and stroke. However, the erectile function was recovered after treatment. Conclusion: Stroke combined HLP caused ED through NO-cGMP-PDE5 pathway.