BACKGROUND Ferulic acid is an antioxidant phenolic compound derived from plants, which has effects on cancer cells. This study aimed to investigate the effects of ferulic acid on HeLa and Caski human cervical carcinoma cells and the molecular mechanisms involved. MATERIAL AND METHODS HeLa and Caski human cervical carcinoma cells were grown in culture and treated with increasing doses of ferulic acid.
View Article and Find Full Text PDFThis study was designed to investigate the antitumor activity of triptolide in ovarian cancer inoculated with SKOV3 and SKOV3/cisplatin (DDP) cells, and to assess the mechanisms. In-vivo and in-vitro experiments were designed to evaluate the effects of triptolide on the tumor growth of SKOV3 and SKOV3/DDP cells. The experiments were divided into four groups: a SKOV3 group, a SKOV3 + TP treatment group, a SKOV3/DDP group and a SKOV3/DDP + TP treatment group.
View Article and Find Full Text PDFPurpose: To improve the labeling efficiency of pseudo-continuous arterial spin labeling (PCASL) at 7T using parallel transmission (pTx).
Methods: Five healthy subjects were scanned on an 8-channel-transmit 7T human MRI scanner. Time-of-flight (TOF) angiography was acquired to identify regions of interest (ROIs) around the 4 major feeding arteries to the brain, and and B maps were acquired in the labeling plane for tagging pulse design.
Although many kinds of therapies are applied in the clinic, drug-resistance is a major and unavoidable problem. Another disturbing statistic is the limited number of drug targets, which are presently only 20-25% of all protein targets that are currently being studied. Moreover, the focus of current explorations of targets are their enzymatic functions, which ignores the functions from their scaffold moiety.
View Article and Find Full Text PDFCost-competitive perovskite fluoride KZnF has been introduced for the first time as an advanced anode for high-performance lithium-based dual-ion batteries, exhibiting conversion/alloying hybrid mechanisms and dominated pseudocapacitive kinetics for Li-ion storage.
View Article and Find Full Text PDFThe rubber tree, Hevea brasiliensis, produces natural rubber that serves as an essential industrial raw material. Here, we present a high-quality reference genome for a rubber tree cultivar GT1 using single-molecule real-time sequencing (SMRT) and Hi-C technologies to anchor the ∼1.47-Gb genome assembly into 18 pseudochromosomes.
View Article and Find Full Text PDFis widely used in Chinese folk medicine and contains iridoids as important active ingredients. The brain-gut axis describes a complex bidirectional system between the central nervous system and the gastrointestinal tract. Herein, we evaluated the antidepressant effects of total iridoids of (TIV) and preliminarily investigated the effects of gut microbiota on their antidepressant effects using a chronic, unpredictable mild-stress mouse model.
View Article and Find Full Text PDFA 3D metal-organic framework {[Cd(5-Brp)(dpa)]·0.5DMF·HO} (1) was successfully synthesized and characterized, which markedly recognized iron ions under the induction of an amino group. With the concentration of Fe increasing, the emission of 1 first declined, then enhanced with a red shift and was finally quenched, which was different from the reference compound [Cd(5-Brp)(bpp)(HO)] (2).
View Article and Find Full Text PDFDevelopment of smaller, faster, and more powerful electronic devices requires effective cooling strategies to efficiently remove ever-greater heat. Phase-change heat transfer such as boiling and evaporation has been widely exploited in various water-energy industries owing to its efficient heat transfer mode. Despite extensive progress, it remains challenging to achieve the physical limit of flow boiling due to highly transitional and chaotic nature of multiphase flows as well as unfavorable boundary layer structures.
View Article and Find Full Text PDFNeuropsychiatr Dis Treat
August 2019
Objective: There is increasing neuroimaging evidence that type 2 diabetes patients with retinal microvascular complications show abnormal brain functional and structural architecture and are at an increased risk of cognitive decline and dementia. However, changes in the topological properties of the functional brain connectome in diabetic retinopathy (DR) patients remain unknown. The aim of this study was to explore the topological organization of the brain connectome in DR patients using graph theory approaches.
View Article and Find Full Text PDFJ Pediatr Hematol Oncol
October 2020
Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer. Vincristine is a core chemotherapeutic agent for patients with ALL; unfortunately, ∼78% will develop vincristine-induced peripheral neuropathy (VIPN). VIPN can result in vincristine dose reductions that decrease therapeutic efficacy: making it important to understand which children are at highest risk for VIPN.
View Article and Find Full Text PDFBackground: There is increasing evidence that patients with retinal vein occlusion exhibit cerebral vascular changes and are at an increased risk of stroke. However, it remains unknown whether patients with retinal vein occlusion exhibit changes in intrinsic brain activity.
Purpose: This study investigated intrinsic brain activity changes in patients with retinal vein occlusion by assessing the amplitude of low-frequency fluctuations.
A family of planar hexanuclear CoLn clusters with the hydroxyl and nitrogen rich ligand 2-[bis(pyridin-2-ylmethyl) amino]-2-(hydroxymethyl)propane-1,3-diol (HL), formulated as [CoLn(μ-O)(μ-N)(OH)(HO)(HL)]·(CHCO)·20HO [Ln = Dy (1), Gd (2), Tb (3), Eu (4) and Ho (5)], have been synthesized and structurally characterized. They are isomorphous and feature a lucanidae-like arrangement. They are the first examples of 3d-4f clusters with the HL ligand.
View Article and Find Full Text PDFComplexes were formed by pairing ZCl (Z = P, As, or Sb) with CR (R = H, F, or CN). The first interaction present is a pnicogen bond between the Z atom and the C═C π-bond. This bond weakens as the H atoms of ethylene are replaced by electron-withdrawing F and CN, and the potential above the alkene switches from negative to positive.
View Article and Find Full Text PDFParkinson's disease (PD) is a multi-systemic disease in the brain arising from the dysfunction of several neural networks. The diagnosis and treatment of PD have gained more attention for clinical researchers. While there have been many fMRI studies about functional topological changes of PD patients, whether the dynamic changes of functional connectivity can predict the drug therapy effect is still unclear.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
May 2019
To establish a quality constant evaluation system of Alismatis Rhizoma decoction pieces,in order to provide reference for regulating the market circulation of this decoction pieces. A total of 18 batches of Alismatis Rhizoma decoction pieces were collected from different pharmaceutical factories,and the morphological parameters of each sample were tested. The content of alisol B 23-acetate in Alismatis Rhizoma decoction pieces was determined by HPLC in the 2015 edition of Chinese Pharmacopoeia,and the parameters such as quality constant and relative quality constant were calculated.
View Article and Find Full Text PDFA new cadmium-based coordination polymer (CP), [Cd(bpe)(ceba)(fa)(HO)] (1; fa = formate anions), was constructed by solvothermal reactions of cadmium nitrates with trans-1,2-bis(4'-pyridyl)ethylene ligand (bpe) and 4-(1-carboxy-ethoxy)-benzoic acid (Hceba). The [2 + 2] photodimerization reaction of CP 1 under UV irradiation generated the corresponding photoproduct [Cd(rctt-tpcb)(ceba)(fa)(HO)] (1a; rctt-tpcb = tetrakis(4-pyridyl)-cyclobutane) via a single-crystal-to-single-crystal (SCSC) transformation. Single crystal X-ray diffraction unveiled that CPs 1 and 1a have similar 2D layered structures, except that rctt-tpcb replaced a pair of bpe ligands in the latter.
View Article and Find Full Text PDFTo clarify the function of microRNA-19a-3p (miRNA-19a-3p) in the osteogenic differentiation of human-derived mesenchymal stem cells (hMSCs) and the potential mechanism. Serum levels of miRNA-19a-3p, RUNX2 and OCN in osteoporosis patients and controls were determined by quantitative real-time polymerase chain reaction (qRT-PCR). Alkaline phosphatase (ALP) content and calcification ability during the process of osteogenic differentiation were examined by ALP staining and alizarin red staining, respectively.
View Article and Find Full Text PDFBACKGROUND Chemokines are important in inflammation, immunity, tumor progression, and metastasis. The purpose of this research was to find an integrated-RNA signature of chemokine family genes to predict the survival prognosis in head and neck squamous carcinoma (HNSC) patients. MATERIAL AND METHODS Relevant data of 504 HNSC patients were extracted from The Cancer Genome Atlas (TCGA) database.
View Article and Find Full Text PDFMyeloid-derived suppressor cells (MDSCs) promote immunosuppression in the tumor microenvironment, support tumor growth and survival, and may contribute to immunotherapy resistance. Recent studies showed that tumor-derived exosomes (TDEs) can induce MDSCs accumulation and expansion, the mechanisms of which are largely unknown. The morphologies and sizes of the exosomes was observed by using a JEM-1400 transmission electron microscope.
View Article and Find Full Text PDFCancer metastasis is a major cause of high mortality in breast cancer. Despite the progress achieved in nanomaterial-based treatments, the cure rate remains unsatisfactory, owing to their poor biocompatibility and non-specific recognition. Inspired by the cell-mimetic strategy, in this work, we fabricated an intelligent cell-like nano-prodrug (Dox-MPK@MDL) for lung metastasis of breast cancer.
View Article and Find Full Text PDFCaffeic acid phenethyl ester (CAPE) is the main polyphenol extracted from honeybee propolis, which inhibits the growth of several kinds of tumor. This study aimed to assess the inhibitory effect of CAPE in nasopharyngeal carcinoma (NPC), evaluate the synergistic action of CAPE in radiotherapy sensitivity of NPC cell lines and further elucidate the possible molecular mechanism involved. CCK-8 assay was used to analyze cell proliferation ability.
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