[Status for self-medication based on bibliometric study in China]

OBJECTIVE

To figure out problems through analyzing the status for self-medication in China and to provide references for further research.
 Methods: Papers related to self-medication were collected from Chinese journal net database, Wanfang database, VIP database and China biomedical literature database (CBMDisc). A literature metrology analysis was carried out by NoteExpress 2.0 and Excel.
 Results: A total of 161 papers were included in this study, while 33 papers belong to Hubei and Jiangsu Province, accounting for 20.50% of the total amount of the papers. 22 papers were from journals as follows: China Pharmacy, Medicine and Society and Chinese Journal of Pharmacoepidemiology, accounting for 13.67% of the total papers. 118 papers belong to research and experience discuss, accounting for 73.29% of all. The cooperation degree was 2.37, and 28 papers were funded. Domestic research reflected the current status of self-medication in our country. Although self-medication brought convenience for residents and reduce the burden on health system, it also brought a series of safety problems.
 Conclusion: Self-medication gradually catches the attention of the researchers. Some researchers have paid attention to self medication, but the evidence is at a low level. Researchers should strengthen cooperation with interagency and carry out experimental study to promote further development for self-medication.

Role of TIM-3 in ovarian cancer

Evidences have suggested that immunotherapy for ovarian cancer is effective. Immune checkpoints have emerged in the field of cancer immunotherapy. Multiple studies have shown negative regulation of TIM-3 expression on CD4⁺ and CD8⁺ T cells and other immunocytes. Overexpression of TIM-3 in innate immune cells has been found in certain types of tumor. The blockade of TIM-3 leads to sustained anti-tumor reactions. TIM-3 plays an inhibitive role for immunity in ovarian cancer. TIM-3 is involved in the development of various subtypes of ovarian cancer and thus has the potential to be a therapeutic target for treatment of ovarian cancer.

Ablation of cytochrome P450 omega-hydroxylase 4A14 gene attenuates hepatic steatosis and fibrosis

Nonalcoholic fatty liver disease (NAFLD) is characterized by simple hepatic steatosis (SS), nonalcoholic steatohepatitis (NASH), hepatic fibrosis, and cirrhosis. Dysregulated fatty acid metabolism in the liver plays a critical role in the pathogenesis of NAFLD. Cytochrome P450 omega-hydroxylase 4A14 (CYP4A14) is a homolog of human CYP4A hydroxylase that catalyzes omega-hydroxylation of medium-chain fatty acids and arachidonic acid in mice. The goal of this study was to determine the role of CYP4A14 in the development and the progression of NAFLD. Here, we showed that hepatic CYP4A expression was up-regulated in the livers of patients and three murine models of NAFLD. Adenovirus-mediated overexpression of CYP4A14 in the livers of C57BL/6 mice resulted in a fatty liver phenotype with a significant increase in hepatic fatty acid translocase (FAT/CD36) expression. In contrast, CYP4A14 gene-deficient mice fed a high-fat diet or a methionine and choline-deficient (MCD) diet exhibited attenuated liver lipid accumulation and reduced hepatic FAT/CD36 expression. In addition, hepatic inflammation and fibrosis was markedly ameliorated in MCD diet-fed CYP4A14-deficient mice. Collectively, CYP4A14 plays an important role in the pathogenesis of both SS and NASH and may represent a potential therapeutic target for the treatment of NAFLD.

Genome-wide analysis of an avirulent strain that induces protective immunity against challenge with virulent Streptococcus suis serotype 2

BACKGROUND

It was previously reported in China that two recent large-scale outbreaks of Streptococcus suis serotype 2 (S. suis 2) infections in human were caused by two highly virulent S. suis 2 strains, from which a novel genomic island (GEI), associated with disease onset and progression and designated 89 K, was identified. Here, an avirulent strain, 05HAS68, was isolated from a clinically healthy pig.

RESULTS

By comparing the genomes of this avirulent strain with virulent strains, it was found that massive genomic rearrangements occurred, resulting in alterations in gene expression that caused enormous single gene gain and loss. Important virulent genes were lost, such as extracellular protein factor (ef) and suilysin (sly) and larger mutants, such as muramidase-released protein (mrp). Piglets vaccinated with the avirulent strain, 05HAS68, had increased TNF-α and IFN-γ levels in the peripheral blood and were fully protected from challenge infection with the most virulent S. suis 2 strain, 05ZYH33. Transfusion of T cells and plasma from vaccinated pigs resulted in protection of recipient animals against the 05ZYH33 challenge.

CONCLUSION

These results suggest that analysis genome of the avirulent strains are instrumental in the development of vaccines and for the functional characterization of important of genetic determinants.

Reinventing Design Principles for Developing Low-Viscosity Carbon Dioxide-Binding Organic Liquids for Flue Gas Clean Up

Anthropogenic CO₂ emissions from point sources (e.g., coal fired-power plants) account for the majority of the greenhouse gases in the atmosphere. Water-lean solvent systems such as CO₂ -binding organic liquids (CO₂ BOLs) are being developed to reduce the energy requirement for CO₂ capture. Many water-lean solvents such as CO₂ BOLs are currently limited by the high viscosities of concentrated electrolyte solvents, thus many of these solvents have yet to move toward commercialization. Conventional standard trial-and-error approaches for viscosity reduction, while effective, are time consuming and economically expensive. We rethink the metrics and design principles of low-viscosity CO₂ -capture solvents using a combined synthesis and computational modeling approach. We critically study the effects of viscosity reducing factors such as orientation of hydrogen bonding, introduction of higher degrees of freedom, and cation or anion charge solvation, and assess whether or how each factor affects viscosity of CO₂ BOL CO₂ capture solvents. Ultimately, we found that hydrogen bond orientation and strength is the predominant factor influencing the viscosity in CO₂ BOL solvents. With this knowledge, a new CO₂ BOL variant, 1-MEIPADM-2-BOL, was synthesized and tested, resulting in a solvent that is approximately 60 % less viscous at 25 mol % CO₂ loading than our base compound 1-IPADM-2-BOL. The insights gained from the current study redefine the fundamental concepts and understanding of what influences viscosity in concentrated organic CO₂ -capture solvents.

Embelin attenuates adipogenesis and lipogenesis through activating canonical Wnt signaling and inhibits high-fat diet-induced obesity

BACKGROUND

Recent studies suggest that Embelin, a natural plant extract might have the potential to prevent body weight gain in rats. However, the mechanisms involved remain to be elucidated.

METHODS

Effects of Embelin on adipocyte differentiation and lipogenesis were studied in murine ST2 stromal cells and C3H10T1/2 mesenchymal cells. The mechanisms through which Embelin regulates adipogenic differentiation and lipogenesis were explored. The in vivo anti-obesity effects of Embelin in high-fat diet (HFD)-induced obesity mice and possible transcriptional impact were investigated.

RESULTS

Embelin treatment suppressed ST2 and C3H10T1/2 cells to proliferate, and differentiate into mature adipocytes, along with the inhibition of adipogenic factors peroxisome proliferator-activated receptor γ, CCAAT/enhancer binding protein-α, adipocyte protein 2 and adipsin. Embelin treatment also decreased the expression levels of lipogenic factors sterol regulatory element-binding protein 1, fatty acid synthase, acetyl-CoA carboxylase 1 and stearoyl-Coenzyme A desaturase 1. Embelin promoted the translocation of β-catenin from the cytoplasm into the nucleus in C3H10T1/2. The nuclear protein levels of β-catenin and TCF-4 were increased following Embelin treatment. Furthermore, Dickkopf-1 (Dkk1) expression was downregulated by Embelin, and overexpression of Dkk1 in C3H10T1/2 reversed the inhibition of adipogenesis and lipogenesis by Embelin. In vivo studies showed that Embelin treatment reduced the gain of body weight and fat, decreased the serum level of triglycerides, free fatty acid and total cholesterol, and improved glucose tolerance and insulin resistance in HFD-fed mice. Moreover, Embelin blocked induction of adipogenic and lipogenic factors and Dkk1 in adipose tissue in HFD-fed mice.

CONCLUSIONS

The present work provides evidences that Embelin is effective in inhibiting adipogenesis and lipogenesis in vitro and the mechanisms may involve canonical Wnt signaling. Embelin has the potential to prevent body weight gain and fat accumulation, and to improve obesity-related glucose tolerance impairment and insulin resistance in the HFD-fed mice.

Simultaneous determination of ethanol's four types of non-oxidative metabolites in human whole blood by liquid chromatography tandem mass spectrometry

The importance of ethanol non-oxidative metabolites as the specific biomarkers of alcohol consumption in clinical and forensic settings is increasingly acknowledged. Simultaneous determination of these metabolites can provide a wealth of information like drinking habit and history, but it was difficult to achieve because of their wide range of polarity. This work describes development and validation of a simple liquid chromatography tandem mass spectrometry (LC-MS/MS) assay for 4 types of ethanol non-oxidative metabolites (ethyl glucuronide, ethyl sulfate, fatty acid ethyl esters and phosphatidylethanols) in 50 μL of human whole blood. Pretreatment method, column and MS conditions were optimized. For the first time, the four types of ethanol non-oxidative metabolites with enormous discrepancies of property were simultaneously extracted and analyzed in one run within 40 min. The limits of detections (LODs) were among 0.1-10 ng/mL, and good linearity was obtained. Deviations in precision and accuracy were all lower than 15% at three QC levels. This method was then applied to two forensic samples, resulting in information on drinking habits and drinking time which were very useful for the interpretation of the blood alcohol results.

Medication literacy status of outpatients in ambulatory care settings in Changsha, China

Objective To assess medication literacy status and to examine risk factors of inadequate medication literacy of outpatients in ambulatory care settings. Methods Study participants were recruited randomly from outpatient departments in four tertiary hospitals (Xiangya Hospital of Central South University, Second Xiangya Hospital of Central South University, Third Xiangya Hospital of Central South University, People's Hospital of Hunan Province) in Changsha, Hunan, China, between October 2014 and January 2015. Medication literacy was assessed using the Medication Literacy Scale, Chinese version. Demographic and clinical data were collected using structured interviews. Multiple logistic regression analysis was used to estimate the independent effects of demographic and clinical factors on medication literacy. Results Of 465 participants, 425 (91.4%) produced valid responses for analysis. The mean medication literacy score was 8.31 (standard deviation = 3.47). Medication literacy was adequate in 131 participants (30.8%), marginally adequate in 248 (58.4%), and inadequate in 46 (10.8%). The risk of inadequate medication literacy was greater for older and unmarried patients but lower for more educated patients. Conclusion Many Chinese outpatients in ambulatory care have inadequate medication literacy. Greater age, low education, and unmarried status are important risk factors of inadequate medication literacy.

Liver X receptor β increases aquaporin 2 protein level via a posttranscriptional mechanism in renal collecting ducts

Liver X receptors (LXRs) including LXRα and LXRβ are nuclear receptor transcription factors and play an important role in lipid and glucose metabolism. It has been previously reported that mice lacking LXRβ but not LXRα develop a severe urine concentrating defect, likely via a central mechanism. Here we provide evidence that LXRβ regulates water homeostasis through increasing aquaporin 2 (AQP2) protein levels in renal collecting ducts. LXRβ^-/- mice exhibited a reduced response to desmopressin (dDAVP) stimulation, suggesting that the diabetes insipidus phenotype is of both central and nephrogenic origin. AQP2 protein abundance in the renal inner medulla was significantly reduced in LXRβ^-/- mice but with little change in AQP2 mRNA levels. In vitro studies showed that AQP2 protein levels were elevated upon LXR agonist treatment in both primary cultured mouse inner medullary duct cells (mIMCD) and the mIMCD3 cell line with stably expressed AQP2. In addition, LXR agonists including TO901317 and GW3965 failed to induce AQP2 gene transcription but diminished its protein ubiquitination in primary cultured mIMCD cells, thereby inhibiting its degradation. Moreover, LXR activation-induced AQP2 protein expression was abolished by the protease inhibitor MG132 and the ubiquitination-deficient AQP2 (K270R). Taken together, the present study demonstrates that activation of LXRβ increases AQP2 protein levels in the renal collecting ducts via a posttranscriptional mechanism. As such, LXRβ represents a key regulator of body water homeostasis.

Enhanced intracellular uptake in vitro by glucose-functionalized nanopesticides

Nanopesticides have been increasingly used in agriculture. To improve the uptake of the target organisms for nanopesticides, we designed a dual-ligand nanopesticide based on gold nanoparticles (Au NPs) as a carrier.

A water-soluble pillar[5]arene-based chemosensor for highly selective and sensitive fluorescence detection of l-methionine

Cationic pillar[5]arene (AWP5) was employed as a water-soluble chemosensor for recognition of amino acids. AWP5 could fluorescently detect l-methionine in water with high selectivity and sensitivity.

Control of the alignment of liquid crystal molecules on a sequence-polymerized film by surface migration and polarized light irradiation

A terminal azobenzene-containing terpolymer with excellent thermal stability and transparency was developed for the photo-alignment of liquid crystal molecules.

V2O5 nanobelt arrays with controllable morphologies for enhanced performance supercapacitors

Controllable preparation of V₂O₅ nanobelt arrays as binder-free supercapacitive electrode materials and their charge–discharge mechanism.

An efficient iodide ion chemosensor and a rewritable dual-channel security display material based on an ion responsive supramolecular gel

The ion stimuli-responsive metallogel PbG could act as a highly selective and sensitive I⁻ sensor and a rewritable dual-channel security display material.

Novel supramolecular sensors constructed from pillar[5]arene and a naphthalimide for efficient detection of Fe3+ and F− in water

Novel water soluble supramolecular sensors for efficient detection of Fe³⁺ and F⁻ were constructed by assembling a novel naphthalimide and pillar[5]arene.

A benzimidazole functionalized NDI derivative for recyclable fluorescent detection of cyanide in water

An NDI-based chemosensor (L2) was synthesized via a one step reaction; L2 showed recyclable CN⁻ detection properties in water.

The Fab Fragment of a Human Anti-Siglec-9 Monoclonal Antibody Suppresses LPS-Induced Inflammatory Responses in Human Macrophages

Sepsis is a major cause of death for hospitalized patients and is characterized by massive overreaction of immune responses to invading pathogens which is mediated by cytokines. For decades, there has been no effective treatment for sepsis. Sialic acid-binding, Ig-like lectin-9 (Siglec-9), is an immunomodulatory receptor expressed primarily on hematopoietic cells which is involved in various aspects of inflammatory responses and is a potential target for treatment of sepsis. The aim of the present study was to develop a human anti-Siglec-9 Fab fragment, which was named hS9-Fab03 and investigate its immune activity in human macrophages. We began by constructing the hS9-Fab03 prokaryotic expression vector from human antibody library and phage display. Then, we utilized a multitude of assays, including SDS-PAGE, Western blotting, ELISA, affinity, and kinetics assay to evaluate the binding affinity and specificity of hS9-Fab03. Results demonstrated that hS9-Fab03 specifically bind to Siglec-9 antigen with high affinity, and pretreatment with hS9-Fab03 could attenuate lipopolysaccharide (LPS)-induced TNF-α, IL-6, IL-1β, IL-8, and IFN-β production in human PBMC-derived macrophages, but slightly increased IL-10 production in an early time point. We also observed similar results in human THP-1-differentiated macrophages. Collectively, we prepared the hS9-Fab03 with efficient activity for blocking LPS-induced pro-inflammatory cytokines production in human macrophages. These results indicated that ligation of Siglec-9 with hS9-Fab03 might be a novel anti-inflammatory therapeutic strategy for sepsis.

Synthesis of Carboxylic Acids and Esters from CO2

The achievements in the synthesis of carboxylic acids and esters from CO₂ have been summarized and discussed.