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https://www.readbyqxmd.com/read/28941406/theoretical-study-on-the-anomeric-effect-in-%C3%AE-substituted-tetrahydropyrans-and-piperidines
#1
Francisco A Martins, Josué M Silla, Matheus P Freitas
Conformational effects, including some controversial examples, have been reported in this work for 2-substituted tetrahydropyrans and piperidines, and for the respective protonated compounds [substituent = F, OH, OCH3, NH2, NHCH3 and N(CH3)2]. Hyperconjugation plays a major role in most cases, either due to endo or exo-anomeric interactions, especially when nitrogen is the electron donor to an antiperiplanar σ* orbital. This interaction also seems to contribute for the Perlin and reverse fluorine Perlin-like effects, which are related to the relative magnitude of (1)JC,H and (1)JC,F coupling constants, respectively, in axial and equatorial conformers...
September 15, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28941404/development-of-a-simple-multi-residue-determination-method-of-80-veterinary-drugs-in-oplegnathus-punctatus-by-liquid-chromatography-coupled-to-quadrupole-orbitrap-mass-spectrometry
#2
Fei Zhao, Xin Gao, Zhixu Tang, Xin Luo, Miaomiao Wu, Jiachao Xu, Xiaoting Fu
A simple, rapid and sensitive multi-residue analytical method was developed and validated for 80 veterinary drugs in Oplegnathus punctatus using ultrahigh performance liquid chromatography-Orbitrap high resolution mass spectrometry (LC-HRMS). The analytes belong to 12 different families include benzimidazoles, β-lactams, lincosamides, macrolides, nitromidazoles, quinolones, sulfonamides and trimethoprim, tetracyclines, triphenylmethane dyes, amphenicols, nonsteroidal estrogens and steroid hormones. The sample preparation was optimized base on QuEChERS (quick, easy, cheap, effective, rugged and safe) procedure...
September 18, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28941401/effect-based-assessment-of-toxicity-removal-during-wastewater-treatment
#3
Pia Välitalo, Riccardo Massei, Ilse Heiskanen, Peter Behnisch, Werner Brack, Andrew J Tindall, David Du Pasquier, Eberhard Küster, Anna Mikola, Tobias Schulze, Markus Sillanpää
Wastewaters contain complex mixtures of chemicals, which can cause adverse toxic effects in the receiving environment. In the present study, the toxicity removal during wastewater treatment at seven municipal wastewater treatment plants (WWTPs) was investigated using an effect-based approach. A battery of eight bioassays was applied comprising of cytotoxicity, genotoxicity, endocrine disruption and fish embryo toxicity assays. Human cell-based CALUX assays, transgenic larval models and the fish embryo toxicity test were particularly sensitive to WWTP effluents...
September 7, 2017: Water Research
https://www.readbyqxmd.com/read/28941356/computational-approaches-to-identify-genetic-interactions-for-cancer-therapeutics
#4
Graeme Benstead-Hume, Sarah K Wooller, Frances M G Pearl
The development of improved cancer therapies is frequently cited as an urgent unmet medical need. Here we describe how genetic interactions are being therapeutically exploited to identify novel targeted treatments for cancer. We discuss the current methodologies that use 'omics data to identify genetic interactions, in particular focusing on synthetic sickness lethality (SSL) and synthetic dosage lethality (SDL). We describe the experimental and computational approaches undertaken both in humans and model organisms to identify these interactions...
September 23, 2017: Journal of Integrative Bioinformatics
https://www.readbyqxmd.com/read/28938795/lipid-lowering-nutraceuticals-in-clinical-practice-position-paper-from-an-international-lipid-expert-panel
#5
Arrigo F G Cicero, Alessandro Colletti, Gani Bajraktari, Olivier Descamps, Dragan M Djuric, Marat Ezhov, Zlatko Fras, Niki Katsiki, Michel Langlois, Gustavs Latkovskis, Demosthenes B Panagiotakos, Gyorgy Paragh, Dimitri P Mikhailidis, Olena Mitchenko, Bernhard Paulweber, Daniel Pella, Christos Pitsavos, Željko Reiner, Kausik K Ray, Manfredi Rizzo, Amirhossein Sahebkar, Maria-Corina Serban, Laurence S Sperling, Peter P Toth, Dragos Vinereanu, Michal Vrablík, Nathan D Wong, Maciej Banach
In recent years, there has been growing interest in the possible use of nutraceuticals to improve and optimize dyslipidemia control and therapy. Based on the data from available studies, nutraceuticals might help patients obtain theraputic lipid goals and reduce cardiovascular residual risk. Some nutraceuticals have essential lipid-lowering properties confirmed in studies; some might also have possible positive effects on nonlipid cardiovascular risk factors and have been shown to improve early markers of vascular health such as endothelial function and pulse wave velocity...
September 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28938791/effects-of-a-high-dose-of-microbial-phytase-and-myo-inositol-supplementation-on-growth-performance-tibia-mineralization-nutrient-digestibility-litter-moisture-content-and-foot-problems-in-broiler-chickens-fed-phosphorus-deficient-diets
#6
D Farhadi, A Karimi, Gh Sadeghi, J Rostamzadeh, M R Bedford
A total of 660 one-day-old Ross 308 broiler chicks were randomly distributed into eleven dietary treatments. Treatments included a maize-soybean meal-based diet with recommended calcium (Ca) and non-phytate phosphorus (nPP) (positive control; PC), an nPP-deficient diet (negative control; NC), NC diets supplemented with different levels of phytase (0, 500, 1,000, 2,000, 3,000, 4,000, 5,000, and 6,000 FTU/kg), a NC diet plus 0.15% myo-inositol, and a NC diet with reduced Ca level (Ca to nPP ratio same as PC)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938784/immunocastration-as-an-alternative-to-caponization-evaluation-of-its-effect-on-body-and-bone-development-and-on-meat-color-and-composition
#7
M A G Quaresma, I C Antunes, M F Ribeiro, S Prazeres, R J B Bessa, P Martins da Costa
Caponization is associated with some morbidity and mortality, which contributes to important economic losses. This practice is executed without any pain relief (neither anesthesia nor analgesia) and can be painful and without consideration of animal welfare. On the other hand, immunocastration accomplished by Improvac and Bovipriva in pigs and cattle represents a noninvasive procedure, and for that reason is regarded as an alternative with improved animal welfare. This study includes 4 experimental groups consisting of capons, slips, roosters, and birds submitted to the Improvac treatment...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938781/differences-in-egg-nutrient-availability-and-embryo-development-in-white-layer-breeder-genotypes
#8
E E Onbasilar, M Kahraman, O Ahlat, Ö F Güngör, A Çalik, S Taban, S Yalçin
Because of consumers' preferences and also due to changes in production systems, the importance of pure breeds has increased again. There are a lot of differences among breeds which have been studied extensively, however, the differences during the incubation period are not yet fully known. Therefore, the present study was conducted to evaluate the composition of the egg parts, absorption of nutrients, and development of embryos from different genotypes. A total of 354 fresh hatching eggs were obtained from one hybrid (Lohman White, LW) and two pure breeds (Denizli and Gerze)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938773/characteristics-of-global-organic-matrix-in-normal-and-pimpled-chicken-eggshells
#9
Z Liu, L Song, F Zhang, W He, R J Linhardt
The organic matrix from normal and pimpled calcified chicken eggshells were dissociated into acid-insoluble, water-insoluble, and facultative-soluble (both acid- and water-soluble) components, to understand the influence of shell matrix on eggshell qualities. A linear correlation was shown among these 3 matrix components in normal eggshells but was not observed in pimpled eggshells. In pimpled eggshells, the percentage contents of all 4 groups of matrix (the total matrix, acid-insoluble matrix, water-insoluble matrix, and facultative-soluble matrix) were significantly higher than that in normal eggshells...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938698/a-systematic-review-of-malignancy-associated-hemophagocytic-lymphohistiocytosis-that-needs-more-attentions
#10
REVIEW
Hongluan Wang, Lixia Xiong, Weiping Tang, Ying Zhou, Fei Li
As an infrequent but potentially life-threatening hyperinflammatory syndrome, hemophagocytic lymphohistiocytosis (HLH) is clinically characterized with prolonged fever, hepatosplenomegaly, cytopenia, hypertriglyceridemia, hyperferritinemia and hemophagocytosis in bone marrow, liver, spleen or lymph nodes. Malignancy-associated HLH (M-HLH), one type of acquired HLH, usually presents variable overlaps of symptoms with other types of HLH, thus resulting in higher incidence of misdiagnosis and mortality. In recent years, with the increasing awareness to this disease, the diagnosis and management of HLH have gained more and more attention, and improvements have been made accordingly...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938693/the-regulation-of-immune-cells-by-lactobacilli-a-potential-therapeutic-target-for-anti-atherosclerosis-therapy
#11
REVIEW
Ya-Hui Ding, Lin-Yan Qian, Jie Pang, Jing-Yang Lin, Qiang Xu, Li-Hong Wang, Dong-Sheng Huang, Hai Zou
Atherosclerosis is an inflammatory disease regulated by several immune cells including lymphocytes, macrophages and dendritic cells. Gut probiotic bacteria like Lactobacilli have been shown immunomodificatory effects in the progression of atherogenesis. Some Lactobacillus stains can upregulate the activity of regulatory T-lymphocytes, suppress T-lymphocyte helper (Th) cells Th1, Th17, alter the Th1/Th2 ratio, influence the subsets ratio of M1/M2 macrophages, inhibit foam cell formation by suppressing macrophage phagocytosis of oxidized low-density lipoprotein, block the activation of the immune system with dendritic cells, which are expected to suppress the atherosclerosis-related inflammation...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938692/effectiveness-and-safety-of-pd-1-pd-l1-inhibitors-in-the-treatment-of-solid-tumors-a-systematic-review-and-meta-analysis
#12
REVIEW
Xiaohui Wang, Zhengqiang Bao, Xiaoju Zhang, Fei Li, Tianwen Lai, Chao Cao, Zhihua Chen, Wen Li, Huahao Shen, Songmin Ying
BACKGROUND: PD-1/PD-L1 inhibitors have been implicated as potentially effective anti-cancer therapies. Some clinical randomized controlled trials (RCTs) have been completed for a variety of PD-1/PD-L1 inhibitors to treat various malignancies, and more RCTs are still under way. We carried out this systematic meta-analysis to evaluate the efficacy and safety of PD-1/PD-L1 inhibitors in the treatment of solid tumors. METHODS: We searched PubMed, EMBASE, clinical trial registers, conference reports, and related reviews...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938691/concomitant-eml4-alk-rearrangement-and-egfr-mutation-in-non-small-cell-lung-cancer-patients-a-literature-review-of-100-cases
#13
REVIEW
Giuseppe Lo Russo, Martina Imbimbo, Giulia Corrao, Claudia Proto, Diego Signorelli, Milena Vitali, Monica Ganzinelli, Laura Botta, Nicoletta Zilembo, Filippo de Braud, Marina Chiara Garassino
The discovery of EGFR mutations and EML4-ALK gene rearrangements has radically changed the therapeutic scenario for patients with advanced non-small cell lung cancer. ALK and EGFR tyrosine-kinase inhibitors showed better activity and efficacy than standard chemotherapy in the first and second line treatment settings, leading to a clear advantage in overall survival of advanced non-small cell lung cancer patients harboring these genetic alterations. Historically the coexistence of EGFR mutations and EML4-ALK rearrangements in the same tumor has been described as virtually impossible...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938655/prognostic-value-of-decreased-long-non-coding-rna-tusc7-expression-in-some-solid-tumors-a-systematic-review-and-meta-analysis
#14
Na Li, Meilan Yang, Ke Shi, Wei Li
Accumulating evidences indicated that tumor suppressor candidate 7 (TUSC7) is a putatively tumor suppressor gene in various tumors. We carried out current systematic review and meta-analysis to explore the decreased expression of TUSC7 associate with prognostic and clinicopathological characteristic in cancer patients. A literature collection search in the online electronic databases PubMed, Embase, Web of Science, and CNKI was conducted to obtain eligible studies (up to February 20, 2017). A total of nine studies comprise 757 patients were identified and included in present meta-analysis based on the selection and inclusion criteria...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938654/methylenetetrahydrofolate-reductase-c677t-polymorphism-and-the-risks-of-polycystic-ovary-syndrome-an-updated-meta-analysis-of-14-studies
#15
Lihong Wang, Wenting Xu, Caihong Wang, Mengyu Tang, Yujia Zhou
Some studies have reported an association between the Methylenetetrahydrofolate reductase (MTHFR) C667T genetic variant and risk of polycystic ovary syndrome (PCOS), although the results remain controversial. A systematic search was conducted on PubMed, Web of Science, EMBASE, Ovid, Chinese National Knowledge Databases and WanFang databases with relevant keywords. Fourteen studies of sixteen distinct populations involving 1478 PCOS cases and used to conduct a meta-analysis. The T allele was not significantly associated with increased risk of PCOS [OR: 1...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938633/mir-543-promotes-colorectal-cancer-proliferation-and-metastasis-by-targeting-klf4
#16
Fangbing Zhai, Chunhong Cao, Liang Zhang, Jianhua Zhang
Till now, miR-543 expression has been demonstrated to be involved in the development of some cancers. However, reports about its expression and mechanism in colorectal cancer (CRC) were conflicting [1, 2]. Here, we investigated clinical implications of miR-543 and mechanisms underlying miR-543-mediated CRC development. In this study, real-time quantitative PCR (qRT-PCR) validated miR-543 was highly expressed in CRC samples and cell lines. MiR-543 was closely associated with tumor size, TNM stage and metastasis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938609/pegylated-arginine-deiminase-can-modulate-tumor-immune-microenvironment-by-affecting-immune-checkpoint-expression-decreasing-regulatory-t-cell-accumulation-and-inducing-tumor-t-cell-infiltration
#17
Elena Brin, Katherine Wu, Hsin-Tze Lu, Yudou He, Zhaoming Dai, Wei He
PEGylated arginine deiminase (ADI-PEG 20) is being investigated in clinical studies in arginine auxotrophic cancers and is well-tolerated. The anti-tumor properties of ADI-PEG 20 have been extensively investigated - ADI-PEG 20 inhibits the growth of auxotrophic cancers in vitro and in vivo - however, its impact on immune cells is largely unknown. Here we report the potential impact of ADI-PEG 20 on the tumor immune microenvironment. ADI-PEG 20 induced immunosuppressive programmed death-ligand 1 expression on some cancer cells in vitro, but the magnitude of the increase was cell line dependent and in most relatively small...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938573/iatc-mhyb-a-hybrid-multi-label-classifier-for-predicting-the-classification-of-anatomical-therapeutic-chemicals
#18
Xiang Cheng, Shu-Guang Zhao, Xuan Xiao, Kuo-Chen Chou
Recommended by the World Health Organization (WHO), drug compounds have been classified into 14 main ATC (Anatomical Therapeutic Chemical) classes according to their therapeutic and chemical characteristics. Given an uncharacterized compound, can we develop a computational method to fast identify which ATC class or classes it belongs to? The information thus obtained will timely help adjusting our focus and selection, significantly speeding up the drug development process. But this problem is by no means an easy one since some drug compounds may belong to two or more than two ATC classes...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938569/evaluation-of-autoantibody-signatures-in-meningioma-patients-using-human-proteome-arrays
#19
Shabarni Gupta, Shuvolina Mukherjee, Parvez Syed, Narendra Goud Pandala, Saket Choudhary, Vedita Anand Singh, Namrata Singh, Heng Zhu, Sridhar Epari, Santosh B Noronha, Aliasgar Moiyadi, Sanjeeva Srivastava
Meningiomas are one of the most common tumors of the Central nervous system (CNS). This study aims to identify the autoantibody biomarkers in meningiomas using high-density human proteome arrays (~17,000 full-length recombinant human proteins). Screening of sera from 15 unaffected healthy individuals, 10 individuals with meningioma grade I and 5 with meningioma grade II was performed. This comprehensive proteomics based investigation revealed the dysregulation of 489 and 104 proteins in grades I and II of meningioma, respectively, along with the enrichment of several signalling pathways, which might play a crucial role in the manifestation of the disease...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938523/hypothermia-induced-by-anesthesia-regulates-various-signals-expressions-in-the-hippocampus-of-animals
#20
Huimei Hao, Shanshan Wang
Though important for a variety of medical procedures, general anesthesia is not a problem free. Some anesthetics have been suggested to affect a number of signals, which are associated with memory consolidation and cognition. In the present study, we attempted to investigate the molecular mechanism of anesthesia-regulated processes. We found that under hypothermic condition, anesthetic of isoflurane enhances various signals expression in hippocampus, including Hspd1, Actb, Mgst1, THBS4, Syp, C1QC, Serpine, Plat, and Ngf, which were related to cellular stress, neural plasticity responses, and hippocampal injury...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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