[Comparative PM Pollution Characteristics and Sources in the Autumn and Winter of 2016-2021 in Handan City].

In 2018, the State Council issued the Three-year Action Plan for Winning the Blue Sky Defense War （Blue Sky Defense War）. To study the characteristics and sources of PM pollution in the early stage （first stage）, middle stage （second stage）, and late stage （third stage） of the Blue Sky Defense War in Handan City in autumn and winter, PM samples were collected in the autumn and winter from 2016 to 2021. Based on the concentration data of eight water-soluble ions, EC, and OC the source analysis was performed using the positive definite matrix factorization model, backward trajectory, and potential source contribution factor （PSCF） analysis.

Challenges and strategies toward oncolytic virotherapy for leptomeningeal metastasis.

Meningeal metastasis (LM) is commonly seen in the advanced stages of cancer patients, often leading to a rapid decline in survival time and quality of life. Currently, there is still a lack of standardized treatments. Oncolytic viruses (OVs) are a class of emerging cancer therapeutics with the advantages of selectively replicating in cancer cells, delivering various eukaryotic transgenes, inducing immunogenic cell death, and promoting anti-tumor immunity.

Apocarotenoids from the fresh roots of Rehmannia glutinosa and their anti-pulmonary fibrosis activity.

Six undescribed compounds (1-6) and twenty-three known analogues (7-29) were isolated from the fresh roots of Rehmannia glutinosa. The structures of the compounds (1-29) were established through the application of spectroscopic analysis. Compounds 3, 4, 6, 8, 13, 18, 21, 22, 25, and 28 exhibited excellent anti-pulmonary fibrosis activity.

Targeted isolation of lignans from the roots of Anthriscus sylvestris (L.) Hoffm. by small molecule accurate recognition technology.

Five undescribed lignans (1-5), along with sixteen known lignans (6-21), were isolated from the roots of Anthriscus sylvestris using small molecule accurate recognition technology (SMART). The structures of the isolated compounds were determined by comprehensive spectroscopic analyses, and the absolute configurations of compounds 3-5 were elucidated by comparison of their calculated and experimental ECD spectra. Compounds 5, 14-15, 19, and 21 exhibited significantly inhibitory effects against hypoxia-stimulated abnormal proliferation of pulmonary arterial smooth muscle cells (PASMCs).

Three new flavonoid glycosides from the herbaceous stems of .

Phytochemical investigation of the -butanol extracts of the herbaceous stems of led to the isolation of eight flavonoids that included three new flavonoid glycosides (-) and five previously reported analogues (-). Their structures have been identified on the basis of various spectral data. Besides, all the flavonoids were tested for their ability to inhibit -glucosidase under the positive control of acarbose, and the results indicated that none of them exhibited significant inhibitory effect on -glucosidase at 100 μM.

CircPIAS1 promotes hepatocellular carcinoma progression by inhibiting ferroptosis via the miR-455-3p/NUPR1/FTH1 axis.

Background: The role of circRNAs in hepatocellular carcinoma (HCC) progression remains unclear. CircPIAS1 (circBase ID: hsa_circ_0007088) was identified as overexpressed in HCC cases through bioinformatics analysis. This study aimed to investigate the oncogenic properties and mechanisms of circPIAS1 in HCC development.

Five new eremophilane-type sesquiterpenes from the fresh roots of Rehmannia glutinosa.

Five undescribed eremophilane-type sesquiterpenes, remophilanetriols E-I (1-5), along with seven known compounds (6-12) were isolated from the fresh roots of Rehmannia glutinosa. Their structures were characterized by extensive spectroscopic data analysis and their absolute configurations were determined by comparing their calculated electronic circular dichroism (ECD) spectra and experimental ECD spectra. The anti-pulmonary fibrosis activities of all compounds were evaluated in vitro by MTT methods, and compounds 2, 8, 10, and 12 exhibited excellent anti-pulmonary fibrosis activities.

Efficacy and safety of perioperative therapy for locally resectable gastric cancer: A network meta-analysis of randomized clinical trials.

Background: Gastric cancer (GC) is the fifth most commonly diagnosed malignancy worldwide, with over 1 million new cases per year, and the third leading cause of cancer-related death.

Aim: To determine the optimal perioperative treatment regimen for patients with locally resectable GC.

Methods: A comprehensive literature search was conducted, focusing on phase II/III randomized controlled trials (RCTs) assessing perioperative chemotherapy and chemoradiotherapy in treating locally resectable GC.

Association between the ROX index and mortality in patients with acute hypoxemic respiratory failure: a retrospective cohort study.

Background: Although ROX index is frequently used to assess the efficacy of high-flow nasal cannula treatment in acute hypoxemic respiratory failure (AHRF) patients, the relationship between the ROX index and the mortality remains unclear. Therefore, a retrospective cohort study was conducted to evaluate the ability of the ROX index to predict mortality risk in patients with AHRF.

Method: Patients diagnosed with AHRF were extracted from the MIMIC-IV database and divided into four groups based on the ROX index quartiles.

Lysine acetyltransferase 6A maintains CD4 T cell response via epigenetic reprogramming of glucose metabolism in autoimmunity.

Augmented CD4 T cell response in autoimmunity is characterized by extensive metabolic reprogramming. However, the epigenetic molecule that drives the metabolic adaptation of CD4 T cells remains largely unknown. Here, we show that lysine acetyltransferase 6A (KAT6A), an epigenetic modulator that is clinically associated with autoimmunity, orchestrates the metabolic reprogramming of glucose in CD4 T cells.

[Characteristics and Sources of PM Pollution During Winter in Handan City from 2016 to 2020].

To explore the characteristics and sources of PM pollution in winter of Handan City in the past five years, PM samples were collected in winter of 2016 to 2020, and eight types of water-soluble inorganic ions were analyzed. The principal component analysis(PCA) model was used to analyze the types of pollution sources, and the backward trajectory and potential source contribution factor(PSCF) were used to simulate the transport trajectory and pollution sources. The results showed that the PM concentration in winter of 2018 was the highest, increasing by 60.

Diarylpentanoids and phenylpropanoids from the roots of Anthriscus sylvestris (L.) Hoffm.

Three pairs of undescribed diarylpentanoid enantiomers (1-3) and five undescribed phenylpropanoids (4-8), along with seven known compounds, were isolated from the roots of Anthriscus sylvestris. The structures of compounds (1-8) were determined by analysis of their 1D and 2D NMR spectra, HRESIMS, and electronic circular dichroism. In addition, the inhibitory activities against hypoxia-stimulated pulmonary arterial smooth muscle cells abnormal proliferation were evaluated by MTT assay.

Transcriptomics-based investigation of manganese dioxide nanoparticle toxicity in rats' choroid plexus.

Manganese dioxide nanoparticles (MnO-NPs) have a wide range of applications in biomedicine. Given this widespread usage, it is worth noting that MnO-NPs are definitely toxic, especially to the brain. However, the damage caused by MnO-NPs to the choroid plexus (CP) and to the brain after crossing CP epithelial cells has not been elucidated.

[Simulation of Anthropogenic CO Emissions in the Yangtze River Delta Based on Different Emission Inventories].

Nowadays, great uncertainty still exists on the urban- and regional-scale anthropogenic CO emission estimation based on emission inventories. In order to achieve the carbon peaking and neutrality targets for China, it is urgent to accurately estimate anthropogenic CO emissions at regional scales, especially in large urban agglomerations. Using two inventories (EDGAR v6.

Ionones and lignans from the fresh roots of Rehmannia glutinosa.

Nine undescribed compounds, together with 21 known components, were isolated from the fresh roots of Rehmannia glutinosa. Their structures were elucidated based on spectroscopic data analysis, and the absolute configurations of undescribed compounds were determined by comparison of their calculated and experimental electronic circular dichroic (ECD) spectra and interpretation of their optical rotation data. The α-glucosidase inhibitory effects of the isolated compounds were investigated and all of them exhibited slightly inhibitory activities.

Effect of paeoniflorin on distal survival of random flaps.

Background: Distal ischemic necrosisis a common complication of orthopedic random skin flaps surgery. Paeoniflorin, a natural compound extracted from Paeonia lactiflora, can enhances angiogenesis and alleviates excessive inflammatory response. We investigated the changes of ischemic extra-long flaps with paeoniflorin and its possible mechanism.

Exenatide inhibits necrosis by enhancing angiogenesis and ameliorating ischemia/reperfusion injury in a random skin flap rat model.

Background: Random skin flaps are often used for plastic repair because they are convenient and flexible. However, necrosis of flaps is a common complication that may lead to disastrous consequences. Exenatide, a glucagon-like peptide 1 receptor agonist, can enhance angiogenesis and ameliorate ischemia/reperfusion injury.

Angiogenic and anti-inflammatory properties of azadirachtin A improve random skin flap survival in rats.

Random skin flaps are widely used to repair tissue defects. However, the distal flap regions are prone to ischemic necrosis, limiting clinical applications. Azadirachtin A, a fruit extract from the neem, improves tissue blood supply and metabolism, reduces cell swelling, promotes tissue healing, and prevents venous thrombosis.

Overexpression of MMP-1 and VEGF-C is associated with a less favorable prognosis in esophageal squamous cell carcinoma.

Background: This study addresses the association of matrix metalloproteinase-1 (MMP-1) and vascular endothelial growth factor-C (VEGF-C) expression in esophageal squamous cell carcinoma (SCC) with clinicopathologic characteristics in the patients.

Material And Methods: We profiled the expression of MMP-1 and VEGF-C by cDNA microarray in 4 cases and by reverse transcription-polymerase chain reaction (RT-PCR) in 14 cases of esophageal SCC. Another 90 cases were reviewed by immunohistochemical examination of paraffin-embedded sections.