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https://www.readbyqxmd.com/read/29351798/comparative-salivary-proteomics-analysis-of-children-with-and-without-dental-caries-using-the-itraq-mrm-approach
#1
Kun Wang, Yufei Wang, Xiuqing Wang, Qian Ren, Sili Han, Longjiang Ding, Zhongcheng Li, Xuedong Zhou, Wei Li, Linglin Zhang
BACKGROUND: Dental caries is a major worldwide oral disease afflicting a large proportion of children. As an important host factor of caries susceptibility, saliva plays a significant role in the occurrence and development of caries. The aim of the present study was to characterize the healthy and cariogenic salivary proteome and determine the changes in salivary protein expression of children with varying degrees of active caries, also to establish salivary proteome profiles with a potential therapeutic use against dental caries...
January 19, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29351058/development-and-characterization-of-an-in-vitro-model-for-radiation-induced-fibrosis
#2
Dhruv Kumar, Sreeya Yalamanchali, Jacob New, Sean Parsel, Natalie New, Andrew Holcomb, Sumedha Gunewardena, Ossama Tawfik, Chris Lominska, Bruce F Kimler, Shrikant Anant, Kiran Kakarala, Terance Tsue, Yelizaveta Shnayder, Kevin Sykes, Subhash Padhye, Sufi Mary Thomas
Radiation-induced fibrosis (RIF) is a major side effect of radiotherapy in cancer patients with no effective therapeutic options. RIF involves excess deposition and aberrant remodeling of the extracellular matrix (ECM) leading to stiffness in tissues and organ failure. Development of preclinical models of RIF is crucial to elucidate the molecular mechanisms regulating fibrosis and to develop therapeutic approaches. In addition to radiation, the main molecular perpetrators of fibrotic reactions are cytokines, including transforming growth factor-β (TGF-β)...
January 19, 2018: Radiation Research
https://www.readbyqxmd.com/read/29350052/protective-mechanisms-of-6-gingerol-in-dextran-sulfate-sodium-induced-chronic-ulcerative-colitis-in-mice
#3
B O Ajayi, I A Adedara, E O Farombi
Ulcerative colitis (UC) is a relapsing and remitting inflammatory disease of the colon, with an increasing incidence worldwide. 6-Gingerol (6G) is a bioactive constituent of Zingiber officinale, which has been reported to possess various biological activities. This study was designed to evaluate the role of 6G in chronic UC. Chronic UC was induced in mice by three cycles of 2.5% dextran sulfate sodium (DSS) in drinking water. Each cycle consisted of 7 days of 2.5% DSS followed by 14 days of normal drinking water...
January 1, 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29349624/combined-effects-of-aspirin-and-vitamin-d3-on-two-oscc-cell-lines-a-preliminary-study
#4
Ting-Ting Xiao, Xian Li, Jia-Li Feng, Yong Li
OBJECTIVES: We evaluated the potential effects of aspirin combined with vitamin D3 on cell proliferation and apoptosis in oral cancer cells. RESULTS: Compared to the untreated control or individual drug, the combinations of aspirin and vitamin D3 significantly decreased the rates of cell proliferation by CCK-8 assay, and caused higher rates of cell apoptosis in both CAL-27 and SCC-15 cells by Annexin V-FITC apoptosis assay and flow cytometry. Remarkably, the combined treatment with aspirin and vitamin D3 significantly suppressed the expression of Bcl-2 protein and p-Erk1/2 protein, examined by western blot analysis...
January 18, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29348572/areca-nut-extracts-mobilize-calcium-and-release-pro-inflammatory-cytokines-from-various-immune-cells
#5
Malika Faouzi, Ram P Neupane, Jian Yang, Philip Williams, Reinhold Penner
Betel nut consumption has significant implications for the public health globally, as the wide-spread habit of Areca chewing throughout Asia and the Pacific is associated with a high prevalence of oral carcinoma and other diseases. Despite a clear causal association of betel nut chewing and oral mucosal diseases, the biological mechanisms that link Areca nut-contained molecules, inflammation and cancer remain underexplored. In this study we show that the whole Areca nut extract (ANE) is capable of mobilizing Ca2+ in various immune cell lines...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29344135/identification-of-differentially-expressed-genes-in-oral-squamous-cell-carcinoma-tca8113-cells
#6
Jun Wang, Lifeng Li, Lina Gao, Chao Guan, Kexin Su, Linlin Li, Wenping Luo, Hongying Chen, Ping Ji
Previous studies have demonstrated that cancer cells with increased levels of aldehyde dehydrogenase 'bright' activity (ALDHbr) exhibit stem cell properties compared with cells exhibiting decreased ALDH activity (ALDHlow). To screen possible biomarkers of cancer stem cells in tongue squamous cell carcinoma, ALDHbr and ALDHlow cells were isolated from the tongue squamous cell carcinoma TCA8113 cell line, and suppression subtractive hybridization was performed to identify differentially expressed genes in the two subpopulations...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343943/the-oral-bioavailability-excretion-and-cytochrome-p450-inhibition-properties-of-epiberberine-an-in-vivo-and-in-vitro-evaluation
#7
Ning Chen, Xiao-Yan Yang, Chang-E Guo, Xin-Ning Bi, Jian-Hua Chen, Hong-Ying Chen, Hong-Pin Li, Hong-Ying Lin, Yu-Jie Zhang
Epiberberine (EPI) is a novel and potentially effective therapeutic and preventive agent for diabetes and cardiovascular disease. To evaluate its potential value for drug development, a specific, sensitive and robust high-performance liquid chromatography-tandem mass spectrometry assay for the determination of EPI in rat biological samples was established. This assay was used to study the pharmacokinetics, bioavailability and excretion of EPI in rats after oral administration. In addition, a cocktail method was used to compare the inhibition characteristics of EPI on cytochrome P450 (CYP450) isoforms in human liver microsomes (HLMs) and rat liver microsomes (RLMs)...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29342955/pharmacokinetics-of-schizandrin-and-its-pharmaceutical-products-assessed-using-a-validated-lc-ms-ms-method
#8
Chi-Lin Li, Yung-Yi Cheng, Chen-Hsi Hsieh, Tung-Hu Tsai
Schisandra chinensis has been used as an important component in various prescriptions in traditional Chinese medicine and, more recently, in Western-based medicine for its anti-hepatotoxic effect. The aim of this study was to develop a selective, rapid, and sensitive ultra-performance liquid chromatography-tandem mass spectrometry method for pharmacokinetic studies of schizandrin in rats. Liquid-liquid extraction was used for plasma sample preparation. A UHPLC reverse-phase C18e column (100 mm × 2.1 mm, 2 μm) coupled with a mobile phase of methanol-0...
January 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29342358/synthesis-and-biological-characterization-of-aryl-uracil-inhibitors-of-hepatitis-c-virus-ns5b-polymerase-discovery-of-abt-072-a-trans-stilbene-analog-with-good-oral-bioavailability
#9
John Randolph, A Chris Krueger, Pamela Donner, John K Pratt, Dachun Liu, Christopher E Motter, Todd W Rockway, Mike D Tufano, Rolf Wagner, Hock B Lim, Jill M Beyer, Rubina Mondal, Neeta S Panchal, Lynn Colletti, Yaya Liu, Gennadiy Koev, Warren M Kati, Lisa E Hernandez, David W A Beno, Kenton L Longenecker, Kent D Stewart, Emily O Dumas, Akhteruzzaman Molla, Clarence Maring
ABT-072 is a non-nucleoside HCV NS5B polymerase inhibitor that was discovered as part of a program to identify new direct-acting antivirals (DAAs) for the treatment of HCV infection. This compound was identified during a medicinal chemistry effort to improve on an original lead, inhibitor 1, which we described in a previous publication. Replacement of the amide linkage in 1 with a trans-olefin resulted in improved compound permeability and solubility, and provided much better pharmacokinetic properties in preclinical species...
January 17, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29340037/systemic-bioinformatics-analysis-of-recurrent-aphthous-stomatitis-gene-expression-profiles
#10
Jian Wu, Zheng-Ping Chen, An-Quan Shang, Wei-Wei Wang, Zong-Ning Chen, Yun-Juan Tao, Yue Zhou, Wan-Xiang Wang
Recurrent aphthous stomatitis (RAS) represents the most common chronic oral diseases with the prevalence ranges from 5% to 25% for different populations. Its pathogenesis remains poorly understood, which limits the development of effective drugs and treatment methods. In this study, we conducted systemic bioinformatics analysis of gene expression profiles from the Gene Expression Omnibus (GEO) to identify potential drug targets for RAS. We firstly downloaded the gene microarray datasets with the accession number of GSE37265 from GEO and performed robust multi-array (RMA) normalization with affy R programming package...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339647/proceedings-of-the-11th-congress-of-the-international-society-of-nutrigenetics-and-nutrigenomics-isnn-2017
#11
William T Barrington, Anna C Salvador, Jaana A Hartiala, Raffaele De Caterina, Martin Kohlmeier, J Alfredo Martinez, Carin B Kreutzer, David Heber, Aldons J Lusis, Zhaoping Li, Hooman Allayee
The International Society of Nutrigenetics and Nutrigenomics (ISNN) held its 11th annual Congress in Los Angeles, California, between September 16 and 19, 2017. In addition to 2 keynote lectures, 4 plenary sessions included presentations by internationally renowned speakers on cutting-edge areas of research and new discoveries in genetics/genomics, the microbiome, and nutrition. Scientific topics included multi-omics approaches; diet and the microbiome; cancer, longevity, and metabolism; moving the field forward; and translational/educational aspects and the future of medicine...
January 17, 2018: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/29339027/a-comparative-study-of-osteopontin-and-mmp-2-protein-expression-in-peripheral-and-central-giant-cell-granuloma-of-the-jaws
#12
Nooshin Mohtasham, Nasrollah Saghravanian, Bahareh Fatemi, Mehdi Vahedi, Monavar Afzal-Aghaee, Hamideh Kadeh
INTRODUCTION: Oral peripheral and central giant cell granulomas are lesions with little-known etiology and pathogenesis. OBJECTIVE: The aim of this study was to compare matrix metalloproteinases-2 and osteopontin protein expression in the multinucleated giant cells and mononuclear cells of the peripheral and central giant cell granuloma lesions. METHODS: In this retrospective study, the presence of matrix metalloproteinases-2 and osteopontin in 37 cases of central giant cell granuloma and 37 cases of peripheral giant cell granuloma paraffin blocks were assessed by streptavidin-biotin immunohistochemistry...
December 27, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29337457/-pharmacovigilance-update
#13
Françoise Livio
The main pharmacovigilance updates in 2017 are reviewed. Denosumab : rebound-associated multiple vertebral fractures after discontinuation. Canagliflozine: increased risk of foot/leg amputations. Biologic and targeted cancer therapies, direct-acting antivirals for chronic hepatitis C: risk of hepatitis B reactivation. Checkpoint inhibitors : immune-related adverse events and graft rejection. Fingolimod : rebound-associated reactivation of MS following withdrawal. Daclizumab: risk of severe liver injury leading to restricted use in MS patients...
January 10, 2018: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29336264/taxifolin-evaluation-through-ex-vivo-permeations-on-human-skin-and-porcine-vaginal-mucosa
#14
Michele Campos Alves, Priscila Aparecida de Almeida, Hudson Caetano Polonini, Carla Aparecida Pereira Bhering, Anderson de Oliveira Ferreira, Marcos Antonio Fernandes Brandao, Nadia Rezende Barbosa Raposo
BACKGROUND: Taxifolin (TAX) is a flavonoid that has numerous pharmacological properties, including an antioxidant ability superior to that of other flavonoids due to its particular structure. Nevertheless, it has low oral bioavailability, which limits its therapeutic application. In this context, potentially important approaches for systemic drug delivery could be by alternative routes such as skin and vaginal mucosa, once both routes have a variety of advantages compared with the oral route, including the ability to bypass both first-pass hepatic metabolism and the consequent degradation in the gastrointestinal tract...
January 15, 2018: Current Drug Delivery
https://www.readbyqxmd.com/read/29335694/the-seventh-biennial-berry-health-benefits-symposium
#15
EDITORIAL
Navindra P Seeram, Britt Burton-Freeman
Research advancing current scientific understanding of the health benefits of berries continues to increase. The Berry Health Benefits Symposium (BHBS) is a biennial meeting highlighting the most recent berry health benefits research from all over the world. Pismo Beach, California was the venue for the seventh biennial BHBS in 2017, and featured oral invited papers on heart health and healthy aging, gut/microbiome health, brain aging, inflammation, cancer prevention, berry special topics, technology and chemistry...
January 16, 2018: Food & Function
https://www.readbyqxmd.com/read/29335686/synthetic-hydroxyapatite-as-a-biomimetic-oral-care-agent
#16
Joachim Enax, Matthias Epple
PURPOSE: Human tooth enamel consists mostly of minerals, primarily hydroxyapatite, Ca10(PO4)6(OH)2, and thus synthetic hydroxyapatite can be used as a biomimetic oral care agent. This review describes the synthesis and characterization of hydroxyapatite from a chemist's perspective and provides an overview of its current use in oral care, with a focus on dentin hypersensitivity, caries, biofilm management, erosion, and enamel lesions. SOURCES: Reviews and original research papers published in English and German were included...
January 15, 2018: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/29335213/jietacins-azoxy-antibiotics-with-potent-nematocidal-activity-design-synthesis-and-biological-evaluation-against-parasitic-nematodes
#17
Akihiro Sugawara, Masahiko Kubo, Tomoyasu Hirose, Kyoichi Yahagi, Noriaki Tsunoda, Yoshihiko Noguchi, Takuji Nakashima, Yoko Takahashi, Claudia Welz, Dennis Mueller, Christina Mertens, Johannes Koebberling, Satoshi Ōmura, Toshiaki Sunazuka
Jietacins, an azoxy antibiotic class of chemicals, were isolated from the culture broth of Streptomyces sp. KP-197. They have a unique structural motif, including a vinyl azoxy group and a long acyclic aliphatic chain, which is usually branched but non-branched in the case of jietacin C. During a drug discovery program, we found that jietacins display potent anthelmintic activity against parasitic nematodes and that jietacin A has a moderate or low acute toxicity (LD50 > 300 mg/kg) and no mutagenic potential in a mini Ames screen...
December 28, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29335207/synthesis-and-biological-evaluation-of-3-2-aminoethyl-uracil-derivatives-as-gonadotropin-releasing-hormone-gnrh-receptor-antagonists
#18
Seon-Mi Kim, Minhee Lee, So Young Lee, Soo-Min Lee, Eun Jeong Kim, Jae Sun Kim, Jihyae Ann, Jiyoun Lee, Jeewoo Lee
We investigated a series of uracil analogues by introducing various substituents on the phenyl ring of the N-3 aminoethyl side chain and evaluated their antagonistic activity against human gonadotropin-releasing hormone (GnRH) receptors. Analogues with substituents at the ortho or meta position demonstrated potent in vitro antagonistic activity. Specifically, the introduction of a 2-OMe group enhanced nuclear factor of activated T-cells (NFAT) inhibition up to 6-fold compared to the unsubstituted analogue...
January 2, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29334624/adequate-vitamin-d3-skin-synthesis-versus-erythema-risk-in-the-northern-hemisphere-midlatitudes
#19
Jakub Guzikowski, Janusz Krzyścin, Agnieszka Czerwińska, Weronika Raszewska
Health-optimum-exposure index (HOEI) is proposed to assess if the prescribed amount of vitamin D3 (target value) could be synthesized in the human skin without erythema appearance. It is defined as the ratio between the vitamin D3 quantity received during the maximum allowed outdoor exposure without erythema risk and the target value. Sunbathing is safe for HOEI>1 and 1/HOEI represents a part of minimal erythema dose (MED) necessary to obtain the target value. We examine the following targets: a vitamin D3 quantity equivalent to 1000 IU vitamin D3 taken orally, and an optimal vitamin D3 quantity defined by Krzyścin et al...
January 11, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29331830/fetal-development-of-the-poeppig-s-woolly-monkey-lagothrix-poeppigii
#20
Rafael Dos Santos de Andrade, Frederico Ozanan Barros Monteiro, Hani Rocha El Bizri, Wilter Ricardo Russiano Vicente, Diva Anelie de Araujo Guimarães, Pedro Mayor
The intrauterine development is an evolutionary strategy that prepares the neonate for extra-uterine life, thus providing important information on the life history of species. In this study, we described the external and internal morphology of 25 fetuses of Poeppig's woolly monkeys (Lagothrix poeppigii) by taking advantage of a 10-year participatory collection of biological samples originated from animals hunted for subsistence purposes in the Peruvian Amazon. Logistic regressions estimated the probability of occurrence of each external morphological characteristic in relation to the crown-rump length (CRL)...
December 8, 2017: Theriogenology
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