Cepharanthine-mediated endoplasmic reticulum stress inhibits Notch1 via binding GRP78 for suppressing hepatocellular carcinoma metastasis.

Background: The metastasis of hepatocellular carcinoma (HCC) leads to a poor prognosis, wherein the activation of Notch1 is an essential contributor. Cepharanthine (Cep) has been identified for its effective antiviral function and versatile intracellular targets. Our previous study has only reported the anti-cancer efficacy of Cep in lung cancer, without an in-depth exploration.

B-Myb deficiency boosts bortezomib-induced immunogenic cell death in colorectal cancer.

B-Myb has received considerable attention for its critical tumorigenic function of supporting DNA repair. However, its modulatory effects on chemotherapy and immunotherapy have rarely been reported in colorectal cancer. Bortezomib (BTZ) is a novel compound with chemotherapeutic and immunotherapeutic effects, but it fails to work in colorectal cancer with high B-Myb expression.

Worldwide trends in mortality for hypertensive heart disease from 1990 to 2019 with projection to 2034: data from the Global Burden of Disease 2019 study.

Aims: This study aims to analyse the worldwide trends in hypertensive heart disease (HHD) mortality and associations with age, period, and birth cohort and predict the future burden of HHD deaths.

Methods And Results: Mortality estimates were obtained from Global Burden of Disease 2019 study. We used age-period-cohort (APC) model to examine the age, period, and cohort effects on HHD mortality between 1990 and 2019.

Up-regulation of ABCG2 by MYBL2 deletion drives Chlorin e6-mediated photodynamic therapy resistance in colorectal cancer.

Objective: Photodynamic therapy (PDT) may be an effective therapeutic strategy for colorectal cancer at an early stage. However, malignant cells' resistance to photodynamic agents can lead to treatment failure. MYBL2 (B-Myb) is an oncogene in colorectal carcinogenesis and development, for which little research has focused on its effect on drug resistance.

[Scalp-nape acupuncture as adjuvant therapy for pharyngeal dysphagia of stroke at recovery stage: a randomized controlled trial].

Objective: To observe the therapeutic effect of scalp-nape acupuncture for pharyngeal dysphagia of stroke at recovery stage on the basis of neuromuscular electrical stimulation (NMES) and rehabilitation training.

Methods: A total of 42 patients with pharyngeal dysphagia of stroke at recovery stage were randomized into an observation group and a control group, 21 cases in each group. Conventional medical symptomatic treatment was given in both groups.

Effectiveness of a Multifaceted Intervention for Prevention of Obesity in Primary School Children in China: A Cluster Randomized Clinical Trial.

Importance: A rapid nutritional transition has caused greater childhood obesity prevalence in many countries, but the repertoire of effective preventive interventions remains limited.

Objective: To determine the effectiveness of a novel multifaceted intervention for obesity prevention in primary school children.

Design, Setting, And Participants: A cluster randomized clinical trial was conducted during a single school year (from September 11, 2018, to June 30, 2019) across 3 socioeconomically distinct regions in China according to a prespecified trial protocol.

Effect of Conduction Band Non-Parabolicity on the Nonlinear Optical Properties in GaAs/ Double Semi-V-shaped Quantum Wells.

In this paper, we investigate the effect of conduction band non-parabolicity (NPBE) on the third harmonic generation(THG), the linear and nonlinear intersub-band optical absorption coefficients (OACs) related with electronic states of double semi-V-shaped GaAs/ quantum wells(QWs) by using the compact-density-matrix approach. Simultaneously, the work is performed in the position dependent effective mass in order to compute the electronic structure for the system by the finite difference and self-consistent techniques. We also compare the results with and without considering NPBE.

The Combined Influence of Hydrostatic Pressure and Temperature on Nonlinear Optical Properties of GaAs/GaAlAs Morse Quantum Well in the Presence of an Applied Magnetic Field.

Studies aimed at understanding the nonlinear optical (NLO) properties of GaAs/GaAlAs morse quantum well (QW) have focused on the intersubband optical absorption coefficients (OACs) and refractive index changes (RICs). These studies have taken two complimentary approaches: (1) The compact-density-matrix approach and iterative method have been used to obtain the expressions of OACs and RICs in morse QW. (2) Finite difference techniques have been used to obtain energy eigenvalues and their corresponding eigenfunctions of GaAs/GaAlAs morse QW under an applied magnetic field, hydrostatic pressure, and temperature.

Stable SET knockdown in breast cell carcinoma inhibits cell migration and invasion.

Breast cancer is the most malignant tumor for women, however, the mechanisms underlying this devastating disease remain unclear. SET is an endogenous inhibitor of protein phosphatase 2A (PP2A) and involved in many physiological and pathological processes. SET could promote the occurrence of tumor through inhibiting PP2A.

Study on the application of Raman spectroscopy on detecting water hardness.

Laser Raman spectrum method was used to study the hardness index of four water samples. The ratio of bending vibration peak intensity to stretching vibration peak intensity of these water samples was measured. The results showed that as the total hardness of water decreases, so does the ratio.

Proteome of melamine urinary bladder stones and implication for stone formation.

Melamine can cause urinary stones related to nephropathy of the kidney and hyperplasia or carcinoma of the bladder, but the mechanism of stone formation is not well understood. In this study, male rats were administered melamine for thirteen weeks to establish melamine bladder stone models and the stones were analysed by Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), energy dispersive X-ray (EDX) spectroscopy, sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), liquid chromatography/mass spectrometry/mass spectrometry (LC-MS/MS) and western blot, respectively, for the composition and proteome, and to explore the implication of proteins for stone formation. The results showed bladder stones were composed of predominant melamine and a few amount of proteins.

[Study on mRNA expression of immune-related genes in patients with allergic dermatitis induced by trichloroethylene].

Objective: To study mRNA expression of immune-related genes (Foxp3, GATA3, CTLA4 and T-bet) in peripheral blood of the patients with allergic dermatitis induced by trichloroethylene (TCE).

Methods: The peripheral blood samples were collected from 8 healthy workers (control group) and 8 patients with allergic dermatitis induced by TCE (case group). Real-time quantitative PCR was applied to detect mRNA expression of immune-related genes (Foxp3, GATA3, CTLA4, T-bet).

[A cell-based detection of ciguatoxin using sodium fluorescence probe].

Objective: To establish a cell-based detection method of ciguatoxin using fluorescence assay.

Methods: Mouse neuroblastoma N-2A cells were exposed to ouabain and veratridine and different concentrations of standard ciguatoxin samples (P-CTX-1) to establish the curvilinear relationship between the toxin dosage and fluorescence intensity using the sodium fluorescence probe CoroNaTM Green. The toxicity curvilinear relationship was also generated between the toxin dosage and cell survival using CCK-8 method.

Chromium(VI) causes down regulation of biotinidase in human bronchial epithelial cells by modifications of histone acetylation.

Hexavalent chromium (Cr(VI)), a commonly used industrial metal, is a well-known mutagen and carcinogen, and occupational exposure can induce a broad spectrum of adverse health effects, including cancers. Although Cr(VI)-induced DNA damage is thought to be the primary mechanism of chromate genotoxicity and mutagenicity, there is an increasing number of reports showing that epigenetic mechanisms of gene regulation might be a central target of Cr(VI) toxicity. Epigenetic changes, such as changes in phosphorylation, altered DNA methylation status, histone acetylation and signaling pathways, have been observed after chromium exposure.

[Effect of cadmium chloride on the expression and phosphorylation of mitogen-activated protein kinase in normal rat kidney epithelial cells].

Objective: To explore the effect of cadmium chloride on the expression and phosphorylation of mitogen-activated protein kinase (MAPK) in normal rat kidney epithelial (NRK) cells.

Methods: The NRK cells were incubated with cadmium chloride either at respective dose (0, 1, 5, 10, 20, 40 µmol/L) for 24 h or at same dose (10 µmol/L) for respective time (0, 0.5, 1.

[Association of cooking oil fumes exposure and oxidative DNA damage among occupational exposed populations].

Background: Previous investigations indicate that cooks are exposed to polycyclic aromatic hydrocarbons (PAH) from cooking oil fumes (COF). However, Emission of PAH and their carcinogenic potencies from cooking oil fumes sources have not been investigated among cooks.

Aims: To investigate the urinary excretion of a marker for oxidative DNA damage, 8-hydroxydeoxyguanosine (8-OHdG), in different groups of cooks and different exposure groups, and to study the association between 8-OHdG and 1-hydroxypyrene (1-OHP), a biological marker for PAH exposure.

[Screening and identification of differential serum proteins related to dermatitis medicamentosa-like of trichloroethylene].

Objective: To screen and identify differential serum proteins which might be involved in dermatitis medicamentosa-like of trichloroethylene (DMLT).

Methods: Three groups of sera were collected from population exposed to trichloroethylene (TCE) (group I), patients suffering from DMLT (group II), and the healed cases (group III). After removing albumin and IgG in the three pools of sera, a comparative proteomic analysis was carried out.

[Construction of a eukaryotic expression vector harboring the small interfering RNA targeting HCMV-IE1 gene and its gene silencing efficiency].

Objective: To investigate the effect of RNA interference targeting human cytomegalovirus immediate early gene 1 (HCMV- IE1) on the gene expression in vitro.

Methods: According to the sequence of HCMV-IE1 gene, the small interfering RNA (siRNA) sequences were designed and introduced into the eukaryotic expression vector containing the U6 promoter. After verification by sequence analysis, the recombinant eukaryotic plasmid (pHCMV-IE1i) was transfected into HEL HCMVAD169 cells.

[Effect of hydroquinone on expression of ubiquitin-ligating enzyme Rad18 in human L-02 hepatic cells].

Objective: To investigate the effects of hydroquinone (HQ) on expression of ubiquitin-ligating enzyme Rad18 in human hepatic cells (L-02), and to explore the role and possible mechanism of Rad18 involved in toxicity of HQ to hepatic cells.

Methods: After L-02 hepatic cells were exposed to HQ with various concentrations (0, 5, 10, 20, 40, 80 and 160 micromol/L) for 24 h, cell survival rate was measured by MTT assay; DNA impairment was evaluated by single cell gel electrophoresis (SCGE); The expression levels of Rad18 mRNA and protein were detected by Real-time fluorescent quantitative polymerase chain reaction (QPCR) technique and Western blot method respectively.

Results: HQ with concentration from 0 to 80 micromol/L had little effect on survival rate of L-02 (P > 0.

Effect of PARP-1 deficiency on DNA damage and repair in human bronchial epithelial cells exposed to Benzo(a)pyrene.

Benzo[a]pyrene is a ubiquitously distributed environmental pollutant known to cause DNA damage, whereas PARP-1 is a nuclear enzyme that is activated by damaged DNA and plays an important role in base excision repair and genomic stability. Here, 16HBE and its PAPR1-deficient cells were exposed to BaP, and the DNA damage level and repair ability of both cell lines were measured by alkaline comet assay. The results showed that cell viability of both cell lines decreased in a dose-dependent manner when exposed to BaP, but there was no significant difference between two cell lines.

An investigation of hormesis of trichloroethylene in L-02 liver cells by differential proteomic analysis.

Hormesis is the dose-response pattern of the biological responses to toxic chemicals, characterized by low-dose stimulation and high-dose inhibition. Although it is known that some cell types exhibit an adaptive response to low levels of cytotoxic agents, its molecular mechanism is still unclear and it has yet to be established whether this is a universal phenomenon that occurs in all cell types in response to exposure to every chemical. Trichloroethylene (TCE) is an organic solvent widely used and is released into the atmosphere from industrial degreasing operations.

[Study on the relationship between breast cancer resistance protein expression and 5-fluorouracil resistance].

Objective: To screen breast cancer resistance protein BCRP-mediated resistance agents and to investigate the relations between BCRP expression and drug resistance.

Methods: MT assay was performed to screen BCRP-mediated resistant agents with established BCRP expression cell model. While, the high performance liquid chromatography (HPLC) assay was administrated to measure the related dosage of intracellular retention resistant agents.

Breast cancer resistance protein expression and 5-fluorouracil resistance.

Objective: To filtrate breast cancer resistance protein (BCRP)-mediated resistant agents and to investigate clinical relationship between BCRP expression and drug resistance.

Methods: MTT assay was performed to filtrate BCRP-mediated resistant agents with BCRP expression cell model and to detect chemosensitivity of breast cancer tissue specimens to these agents. A high performance liquid chromatography (HPLC) assay was established, and was used to measure the relative dose of intracellular retention resistant agents.