This study estimates temporal trajectories and sociodemographic disparities in underage adolescent binge drinking in the United States over the past four decades. By compiling 47 waves of national representative data from the Monitoring the Future (MTF) study between 1976 and 2022, we analyzed two types of adolescent binge drinking behaviors, past-two-week excessive drinking and drunkenness in the past 30 days, using the innovative modified Poisson (mixture) approach to grouped and right-censored counts (GRC). The overall decrease in incidence rates was attributable to substantial reductions in the risks of excessive drinking (45.
View Article and Find Full Text PDFPurpose: This study sought to examine grouped and right-censored (GRC) counts of adolescent marijuana use and estimate its temporal trajectories and sociodemographic disparities over almost half a century.
Methods: After compiling 46 waves of nationally representative data from the Monitoring the Future (MTF) study from 1976 to 2021 (sample size = 491,348), we utilized an innovative modified Poisson (mixture) approach to analyze past-year marijuana use quantified by GRC counts.
Results: The overall reduction in incidence rates of marijuana use was attributable to an almost 40% reduction in the risk of marijuana use (with the proportion of at-risk adolescents at 51.
Objective: To compare the clinical effect of conventional acupuncture combined with pricking and cupping at area and conventional acupuncture in the treatment of scapulohumeral periarthritis of frozen stage.
Methods: A total of 66 patients with scapulohumeral periarthritis of frozen stage were randomly divided into a combination group (31 cases) and an acupuncture group (35 cases, 1 case dropped off). Both groups were given functional exercise.
Inflammation is connected with a variety of diseases and there is still a need to develop more effective and safer anti-inflammatory drugs. Herein, we synthesized, resolved, and characterized eight enantiopure isomers of yaequinolone J1 (1), yaequinolone J2 (2), 4'-desmethoxyyaequinolone J1 (3), and 4'-desmethoxyyaequinolone J2 (4). The key synthetic steps were extended and 34 racemic analogues modified at the 4-aryl, the N-position, and the pyran ring were designed and synthesized.
View Article and Find Full Text PDFNatural products are well established as an important resource and play an important role in drug discovery. Here, two pyrrolinone-fused benzoazepine alkaloids, (+)-asperazepanones A (1) and B (2) with a 6/7/5 ring system, together with the artifact (-)-asperazepanone A (1), were isolated from the coral-derived Aspergillus candidus fungus. Their structures including absolute configurations were elucidated by extensive spectroscopic methods, single crystal X-ray diffraction, and ECD calculations.
View Article and Find Full Text PDFHemp seed has been used as a traditional oriental medicine and health food in China for centuries. Polysaccharides from hemp seed (HSP) exhibit important properties of intestinal protection, but there are limited data on the specific underlying mechanism. The primary objective of this study was to investigate the protective effect of HSP on intestinal oxidative damage induced by cyclophosphamide (Cy) in mice.
View Article and Find Full Text PDFFerulic acid (FA) has been shown to have a neuroprotective effect on Alzheimer's disease induced by amyloid-beta (Aβ) neurotoxicity. This work aims to ascertain the structure-activity relationship of FA and its alkyl esters (FAEs) for evaluating the antioxidant activities in PC12 cells and Aβ aggregation inhibitory activities in vitro, as well as the signaling mechanisms against oxidative stress elicited by Aβ in PC12 cells. Our data showed that alterations in the subcellular localization and cytotoxicity of FAEs caused by the lipophilicity of FA were crucial when evaluating their antioxidant capacities.
View Article and Find Full Text PDFLow molecular seleno-aminopolysaccharide (LSA) was synthesized with sodium selenite and low molecular aminopolysaccharide (LA), which is an organic selenium compound. This study is aimed to investigate the protective effect of LSA on the intestinal mucosal barrier in weaning stress rats by detecting the intestinal tissue morphology and function, mucosal thickness and permeability, the structure of MUC2, antioxidant index, the expression level of intracellular transcription factor NF-E2-related factor 2 (Nrf2), and its related factors. The results showed that LSA significantly increased the height of intestinal villi ( < 0.
View Article and Find Full Text PDFThe aim of the study was to investigate the antioxidant effect of seleno-amino-oligosaccharide (Se-AOS) on intestinal porcine epithelial cells (IPEC-1). MTT assay showed that Se-AOS had no effect on the viability of IPEC-1 cells up to a concentration of 9200 μg/L and Se-AOS significantly increased the viability of IPEC-1 cells compared to cells exposed to HO alone. Se-AOS significantly increased the level of superoxide Dismutase (SOD) and decreased the levels of malonic dialdehyde (MDA) and lactate dehydrogenase (LDH) in IPEC-1 cells.
View Article and Find Full Text PDFThe aim of this experiment was to investigate the protective effects of polysaccharides of sea cucumber Acaudina leucoprocta (ALP) against hydrogen peroxide (HO) induced oxidative injury in RAW264.7 cells. Analysis of monosaccharide composition and structure of one fraction from ALP (ALP) were analyzed by High Performance Liquid Chromatography (HPLC) and Fourier Transform Infrared Spectoscopy (FT-IR).
View Article and Find Full Text PDFTumor-associated macrophages (TAMs) has been regarded as the most prominent component in tumor microenvironment. The correlation between TAM density and poor prognosis in Hepatocellular carcinoma (HCC) patients suggests a supportive role for TAMs in tumor progression. Here we employed a co-culture system to interrogate the molecular link between Yes-Associated Protein (YAP) and TAMs chemotaxis in HCC cells.
View Article and Find Full Text PDFBackground: MicroRNAs (miRNAs) are critical modulators of various physiological and pathological processes, but their role in cardiac arrhythmias remains yet to be completely understood. Connexin43 (Cx43) is an important cardiac gap junction protein and a potential target of miR-206, and downregulation of Cx43 induces ventricular tachyarrhythmias.
Methods: We investigated the effects of miR-206 overexpression on the adult mouse heart and in cardiac arrhythmias.
Metastasis is the leading cause of mortality for human non-small cell lung cancer (NSCLC). However, it is difficult to target tumor metastasis because the molecular mechanisms underlying NSCLC invasion and migration remain unclear. GEO data analyses and IHC analyses were performed to identify that the expression level of AKR1C1, a member of human aldo-keto reductase family, was highly elevated in patients with metastasis or metastatic foci of NSCLC patients.
View Article and Find Full Text PDFBackground: Metastasis accounts for the most lethal reason for the death of ovarian cancer patients, but remains largely untreated. Epithelial-mesenchymal transition (EMT) is critical for the conversion of early-stage ovarian tumours into metastatic malignancies. Thus the exploration of the signalling pathways promoting EMT would open potential opportunities for the treatment of metastatic ovarian cancer.
View Article and Find Full Text PDFBackground: Metastatic bone cancer pain is one of the most common clinical cancer pains and is caused by many factors. This study was conducted to explore the clinical efficacy of using two non-steroidal anti-inflammatory drugs (NSAIDs) along with an opioid in treating metastatic bone cancer pain.
Material And Method: A total of 342 patients with a pain score of 7-10 on the visual analog scale (VAS) were recruited for 4 weeks of treatment and randomly assigned to three different groups-one group received two NSAIDs (diclofenac and celecoxib), one group received diclofenac, and one group received celecoxib.
Sorafenib is a multikinase inhibitor used as a first-line treatment for advanced hepatocellular carcinoma (HCC), but it has shown modest to low response rates. The characteristic tumour hypoxia of advanced HCC maybe a major factor underlying hypoxia-mediated treatment failure. Thus, it is urgent to elucidate the mechanisms of hypoxia-mediated sorafenib resistance in HCC.
View Article and Find Full Text PDFAlthough hypoxia is a prominent feature contributing to the therapeutic resistance of hepatocellular carcinoma cells (HCC) against chemotherapeutic agents, including the Topoisomerase I inhibitor SN38, the underlying mechanism is not fully understood and its understanding remains a major clinical challenge. In the present study, we found that hypoxia-induced nuclear translocation and accumulation of YAP acted as a survival input to promote resistance to SN38 in HCC. The induction of YAP by hypoxia was not mediated by HIF-1α because manipulating the abundance of HIF-1α with CoCl2, exogenous expression, and RNA interference had no effect on the phosphorylation or total levels of YAP.
View Article and Find Full Text PDFZhejiang Da Xue Xue Bao Yi Xue Ban
September 2015
Objective: To investigate the effect of sunitinib on the migration of ovarian cells and its mechanism of the negative regulation TGF-β mediated of epithelial-mesenchymal transition(EMT) by sunitinib to inhibit ovarian cancer metastasis.
Methods: The migration of human ovarian cancer cells SKOV3 was evaluated by wound-healing and transwell assays. The effects of sunitinib on TGF-β-induced E-cadherin expression was assessed by Western-blotting, real time RT-PCR and immunofluorescence assay.
Lower global cognitive function scores are a common symptom of autism spectrum disorders (ASDs). This study investigates the effects of melatonin on hippocampal serine/threonine kinase signaling in an experimental ASD model. We found that chronic melatonin (1.
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