Urban Waterfront Park Plant Landscape Design—Take Ganjiang Citizen Park as an Example

The design of waterfront parks is discussed with the aim of enhancing the ornamental nature of waterfront landscape greenery and enriching urban public space. In the urban waterfront, vegetation is a kind of landscape with various functions such as ecological, ornamental and aesthetic, which plays a pivotal role in improving people’s quality of life, ecological quality of life and urban image. Through the study of the basic principles and arrangement of waterfront urban landscaping, it has certain guiding significance for the planning and arrangement of waterfront park greenery

The Ameliorate Effect of Endomorphin 1 on the Mice Nephrotoxicity Induced by Cadmium

AbstractTo wonder whether endomorphin 1(EM1), the antioxidative peptide, can protect against the renal toxicology of cadmium (Cd), which probably related to the oxidative injury.MethodsIn vivo assays have been designed and performed, such as the measurement of oxidative damage parameters and the index of antioxidative system.ResultData from our study demonstrated the effect of EM1 could ameliorate the increased concentration of lipid peroxidation products and protein carboxylatio and increase the content of antioxidative system, the antioxidant capacity of EM1 probably relate to its structure.ConclusionOur study first demonstrated the nephrotoxicity induced by Cd can be suppressed by the treatment of EM1

Structure-activity Study of Endomorphins Analogs with C- terminal Substitution

AbstractAims: To further wonder the influence of C-terminal residues on the pharmacological4 activities.Methods: The in vitro and in vivo opioid activities of C-terminal substitution analogs [L-Tic] EM1 and [L-Tic] EM2 were investigated using radioligand binding assay, guinea pig ileum (GPI) assay, mouse vas deferens (MVD) assay, systemic arterial pressure (SAP) assay and tail-flick test.Results: Our data showed that the analogs produced a higher δ-opioid affinity but low colon-opioid affinity, dose-dependent but reduced analgesic activities and cardiovascular effect comparing with those of EMs. Moreover, these effects induced by the analogs can be inhibited by naloxone, indicating an opioid mechanism.Conclusion: These results provided suggestive evidences that the substitution of C-terminal residue may play an important role in the regulation of opioid affinities and pharmacological activities

Transmission electron microscopy analysis of some transition metal compounds for energy storage and conversion

This work was preliminarily supported by the National Key Research Program of China (2016YFA0202604), the Natural Science Foundation of China (21476271), NSFC-RGC (21461162003) and Natural Science Foundation (2014KTSCX004 and 2014A030308012) of Guangdong Province, China.Recently, transition metal compounds (TMCs) have been employed as high-performance electrode materials for lithium ion batteries (LIBs) and supercapacitors (SCs) owing to their high specific capacities, high electrical conductivity, and high chemical and thermal stability. While the characterization of electrochemical properties of TMC anodes is well developed, new challenges arise in understanding the structure-property relationships. Transmission electron microscopy (TEM) is a powerful tool for studying microstructural characteristics. With TEM and related techniques, fundamental understanding of how the microstructures affect the properties of the TMC nanostructured anodes can be improved. In this article, the application of TEM in characterization of some typical TMC anode materials optimized through structural engineering, elemental doping, surface modification, defect-control engineering, morphological control, etc. is reviewed. Emphasis is given on analyzing the microstructures, including surface structures, various defects, local chemical compositions and valence states of transition metals, aimed at illustrating a structure-property relationship. The contribution and future development of the TEM techniques to elucidation of the electrochemical properties of the TMC anodes are highlighted.PostprintPeer reviewe

In situ entry of oligonucleotides into brain cells can occur through a nucleic acid channel

Brain tissue has become a challenging therapeutic target, in part because of failure of conventional treatments of brain tumors and a gradually increasing number of neurodegenerative diseases. Because antisense oligonucleotides are readily internalized by neuronal cells in culture, these compounds could possibly serve as novel therapeutic agents to meet such a challenge. In previous in vitro work using cell culture systems, we have demonstrated that intracellular delivery requires a vector such as cationic liposomes since free oligonucleotides remain largely trapped in the endocytic pathway following cellular uptake. Here we studied the cellular uptake properties of oligonucleotides by explants of rat brain (brain slices), and by in vivo brain tissue after administration of oligonucleotides by bolus injection. In contrast to in vitro uptake, we show that in brain slices oligonucleotides were taken up by neuronal and nonneuronal cells, irrespective of their assembly with cationic liposomes. In either case, a diffuse distribution of oligonucleotides was seen in the cytosol and/or nucleus. Uptake of oligonucleotides by brain slices as a result of membrane damage, potentially arising from the isolation procedure, could be excluded. Interestingly, internalization was inhibited following treatment of the tissue with antibody GN-2640, directed against a nucleic acid channel, present in rat kidney cells. Our data support the view that an analogous channel is present in brain tissue, allowing entry of free oligonucleotides but not plasmids. Indeed, for delivery of the latter and accomplishment of effective transfection, cationic lipids were needed for gene translocation into both brain slices and brain tissue in vivo. These data imply that for antisense therapy to become effective in brain, cationic lipid-mediated delivery will only be needed for specific cell targeting but not necessarily for delivery per se to accomplish nuclear deposition of oligonucleotides into brain cells and subsequent down-regulation of disease-related targets.</p