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https://www.readbyqxmd.com/read/28651420/-effects-of-hypoxia-inducible-factor-1%C3%AE-on-p311-and-its-influence-on-the-migration-of-murine-epidermal-stem-cells
#1
Z D Xu, H S Li, S Wang, W F He, J Wu, G X Luo
Objective: To explore the effects of hypoxia inducible factor-1α (HIF-1α) on P311 and its influence on the migration of murine epidermal stem cells (ESCs) under hypoxia in vitro. Methods: Two kinds of murine ESCs were isolated and obtained from 15 neonatal wild-type C57BL/6J mice and 5 congeneric source P311 gene knock-out mice, respectively. The first passage of cells were used in the following experiments after morphologic observation and detection of expression of cell surface markers CD71 and CD49f with flow cytometer...
May 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28651409/-drug-susceptibility-test-guided-therapy-and-novel-empirical-quadruple-therapy-for-helicobacter-pylori-infection-a-network-meta-analysis
#2
Q Y Gou, R B Yu, R H Shi
Objective: To compare the efficacy and the risk of adverse effect of drug susceptibility test guided therapy and novel empirical quadruple therapy for Helicobacter (H.) pylori infection. Methods: Literature retrieval was conducted by using major databases. Related papers published up to June 2015 were considered eligible if they were randomized control trials comparing different pharmacological formulations for H. pylori infection and used in a network Meta-analysis and a single rate Meta-analysis to evaluate the relative and absolute rates of H...
May 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28651331/il-1%C3%AE-up-regulates-star-and-progesterone-production-through-the-erk1-2-and-p38-mediated-creb-signaling-pathways-in-human-granulosa-lutein-cells
#3
Xuan Dang, Qinling Zhu, Yaqiong He, Yuan Wang, Yao Lu, Xiaoxue Li, Jia Qi, Hasiximuke Wu, Yun Sun
The pro-inflammatory cytokine interleukin-1β (IL-1β) may be involved in several ovulation-associated events, such as proteases synthesis, prostaglandin production and steroidogenesis in granulosa cells. However, the exact effect of IL-1β on progesterone synthesis in granulosa cells and the underlying mechanism remain unclear. By using cultured granulosa-lutein cells collected from women undergoing in vitro fertilization or intracytoplasmic sperm injection, we found that IL-1β up-regulated steroidogenic acute regulatory protein (StAR) expression and progesterone synthesis in granulosa-lutein cells, which was comparable with luteinizing hormone (LH) effect and could be abolished by an IL-1 receptor antagonist...
June 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28651317/effects-of-multi-environmental-factors-on-physiological-and-biochemical-responses-of-large-yellow-croaker-larimichthys-crocea
#4
Qian-Feng Wang, Wei-Liang Shen, Cheng Liu, Dan-Li Mu, Xiong-Fei Wu, Nian-Gang Guo, Jun-Quan Zhu
Land-based recirculating aquaculture systems (RAS) and cage culture are important methods of Larimichthys crocea production. The effects of environmental factors on physiological and biochemical aspects of L. crocea require clarification. Temperature and salinity are controlled in RAS and directly affect L. crocea growth and survival. To explore optimal parameters, the oxygen consumption rate (RO), ammonium excretion rate (RN), and O/N ratio at different temperatures (8, 14, 20, 26, and 32 °C) and salinities (5, 15, 25, and 35‰) were determined...
June 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28651156/alterations-in-aspergillus-brasiliensis-niger-atcc-9642-membranes-associated-to-metabolism-modifications-during-application-of-low-intensity-electric-current
#5
Nancy Velasco-Alvarez, Mariano Gutiérrez-Rojas, Ignacio González
The effects of electric current on membranes associated with metabolism modifications in Aspergillus brasiliensis (niger) ATCC 9642 were studied. A 450-mL electrochemical cell with titanium ruthenium-oxide coated electrodes and packed with 15g of perlite, as inert support, was inoculated with A. brasiliensis spores and incubated in a solid inert-substrate culture (12 d; 30°C). Then, 4.5days after starting the culture, a current of 0.42mAcm(-2) was applied for 24h. The application of low-intensity electric current increased the molecular oxygen consumption rate in the mitochondrial respiratory chain, resulting in high concentrations of reactive oxygen species, promoting high lipoperoxidation levels, according to measured malondialdehyde, and consequent alterations in membrane permeability explained the high n-hexadecane (HXD) degradation rates observed here (4...
June 19, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/28651148/aldo-keto-reductase-activity-after-diethylhexyl-phthalate-exposure-in-eutopic-and-ectopic-endometrial-cells
#6
La Yeon Kim, Mee Ran Kim, Jang Heub Kim, Hyun Hee Cho
OBJECTIVE: Endometriosis is a multifactorial gynaecological disease in reproductive-age women. Endometriotic tissue is characterized by high prostaglandin levels and progesterone resistance. Human aldo-keto reductases (AKRs) convert progesterone to a less potent metabolite and cause progesterone resistance. Therefore, in this study, we evaluated whether diethylhexyl phthalate (DEHP) alters AKR expression in human ectopic and eutopic endometrium. STUDY DESIGN: We used microarrays and western blotting to study the effects of DEHP, and checked the presence of AKR in endometriosis patients by enzyme-linked immunosorbent assay (ELISA)...
May 22, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28651104/autophagy-is-an-important-event-for-low-dose-cytarabine-treatment-in-acute-myeloid-leukemia-cells
#7
Liyun Chen, Pei Guo, Yunxiang Zhang, Xiaoyang Li, Peimin Jia, Jianhua Tong, Junmin Li
Cytarabine (Ara-c) has been an important agent in acute myeloid leukemia (AML) treatment for more than 40 years. While, the mechanisms underlying low dose cytarabine (LD Ara-c) is poorly understood. In this study, we investigated the therapeutic effect of LD Ara-C in vitro. U937 and HEL cell lines were treated with increasing dose of Ara-C and showed growth inhibition rates in a time and dose-dependent manner. Treatment with LD Ara-C (50nM) induced a time-dependent increase in expression of microtubule-associated protein light chain 3 (LC3) and beclin1, but degradation of sequestosome1 (p62) in both U937 and HEL cells...
June 16, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28651094/in-vitro-susceptibility-of-brachyspira-hyodysenteriae-to-a-commercial-citrus-fruit-extract
#8
Pedro J G de Nova, Ana Carvajal, Miguel Prieto, Pedro Rubio
Brachyspira hyodysenteriae is the main etiological agent of swine dysentery (SD). Nowadays, treatment and control of SD is increasingly difficult due to the emergence of antimicrobial resistance together with the restrictions on the use of antibiotics in veterinary practice. The aim of this study was to evaluate, as an alternative in the control of this disease, the antimicrobial activity and the main mechanism of action of BIOCITRO, a citrus extract commercialized as raw material and used as feed additive, against B...
June 20, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28651008/production-and-purification-of-human-hsp90%C3%AE-in-escherichia-coli
#9
Martina Radli, Dmitry B Veprintsev, Stefan G D Rüdiger
The molecular chaperone Hsp90 is an essential member of the cellular proteostasis system. It plays an important role in the stabilisation and activation of a large number of client proteins and is involved in fatal disease processes, e.g. Alzheimer disease, cancer and cystic fibrosis. This makes Hsp90 a crucial protein to study. Mechanistic studies require large amounts of protein but the production and purification of recombinant human Hsp90 in Escherichia coli is challenging and laborious. Here we identified conditions that influence Hsp90 production, and optimised a fast and efficient purification protocol...
2017: PloS One
https://www.readbyqxmd.com/read/28651005/optimization-of-a-murine-and-human-tissue-model-to-recapitulate-dermal-and-pulmonary-features-of-systemic-sclerosis
#10
Tomoya Watanabe, Tetsuya Nishimoto, Logan Mlakar, Jonathan Heywood, Maya Malaab, Stanley Hoffman, Carol Feghali-Bostwick
The murine bleomycin (BLM)-induced fibrosis model is the most widely used in systemic sclerosis (SSc) studies. It has been reported that systemic delivery of BLM via continuous diffusion from subcutaneously implanted osmotic minipumps can cause fibrosis of the skin, lungs, and other internal organs. However, the mouse strain, dosage of BLM, administration period, and additional important features differ from one report to the next. In this study, by employing the pump model in C57BL/6J mice, we show a dose-dependent increase in lung fibrosis by day 28 and a transient increase in dermal thickness...
2017: PloS One
https://www.readbyqxmd.com/read/28650945/treatment-approach-for-infection-of-healed-fractures-after-internal-fixation
#11
Joshua M Lawrenz, Salvatore J Frangiamore, Ajinkya A Rane, W Alex Cantrell, Heather A Vallier
OBJECTIVE: To review the efficacy of a treatment approach for patients with infection and colonized implants after open reduction and internal fixation of fractures. DESIGN: Retrospective case series. SETTING: Level one trauma center. PATIENTS: Twenty patients were treated for wound infection with colonized implants after open reduction and internal fixation. INTERVENTION: Surgical debridement, removal of implants and a short post-operative oral antibiotic course...
June 15, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28650870/managing-knowledge-in-transitions-experiences-of-health-care-leaders-in-succession-planning
#12
Shannon L Sibbald, C Nadine Wathen, Anita Kothari
Effective and efficient methods of succession planning are integral to the success of organizations across the health care system. We explored current health organizations' senior leadership transition processes. Participants were in senior level leadership and decision-making positions in hospitals within Ontario, Canada. Most of the participants did not have formal transition plans and instead relied on the human resources department to plan for succession. We discuss these processes through three themes: (1) preplanning for a transition, (2) the transition process, and (3) barriers to successful transitions...
June 23, 2017: Health Care Manager
https://www.readbyqxmd.com/read/28650862/the-potential-combinational-effect-of-mir-34a-with-celecoxib-in-osteosarcoma
#13
Xia Chen, Dan Peng, Yi Shen, Bo Liu, Hongkang Zhou, Huai Tao, Jufang Huang
Advanced osteosarcoma (OS) is usually treated by preoperative and postoperative chemotherapy, but there are a very limited number of active agents. Celecoxib (Cel) is a COX-2-selective nonsteroidal anti-inflammatory drug and its antitumoral effect has been shown widely in a variety of cancers including OS cells in vitro. However, the potential combinational effect of Cel with other biological therapy has not been reported in OS cells. In this study, the effects of Cel, miR-34a mimics, and their combination on cell proliferation (MTT assay), migration (in-vitro scratch assay), invasion (transwell assay), mRNA (real-time PCR), and protein (Western blot) expression of associated signal transductions were investigated in cultured MG63 cells...
June 23, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28650789/effects-of-cola-flavored-beverages-and-caffeine-on-streptococcus-mutans-biofilm-formation-and-metabolic-activity
#14
Roger P Dotsey, Elizabeth A S Moser, George J Eckert, Richard L Gregory
OBJECTIVE: To examine the effects of cola-flavored beverages and caffeine on growth and metabolism of Streptococcus mutans biofilm. This study was designed to determine if carbonated beverages or caffeine can increase S. mutans growth and biofilm formation and metabolic activity in vitro, potentially leading to increased S. mutans-associated cariogenicity in children that consume them. STUDY DESIGN: Six different cola-flavored products, plus pure caffeine, and pure high fructose corn syrup (HFCS), at different concentrations similar to those in the beverages were tested...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28650782/effect-of-probiotic-yogurt-and-xylitol-containing-chewing-gums-on-salivary-s-mutans-count
#15
Elnaz Ghasemi, Romina Mazaheri, Arezoo Tahmourespour
BACKGROUND AND AIMS: In addition to improving gastrointestinal health and intestinal microflora, probiotic bacteria have been recently suggested to decrease cariogenic agents in the oral cavity. The aim of this study was to investigate the effects of probiotic yogurt and xylitol-containing chewing gums on reducing salivary Streptococcus mutans levels. STUDY DESIGN: This randomized clinical trial recruited 50 female students with over 10(5) colony forming units S...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28650731/combination-treatments-with-luteolin-and-fisetin-enhance-anti-inflammatory-effects-in-high-glucose-treated-thp-1-cells-through-histone-acetyltransferase-histone-deacetylase-regulation
#16
Arang Kim, Jung-Mi Yun
Hyperglycemia leads to diabetes and its diabetic complications. In this study, we investigated the synergistic effects of luteolin and fisetin on proinflammatory cytokine secretion and its underlying epigenetic regulation in human monocytes exposed to hyperglycemic (HG) concentrations. Human monocytic cells (THP-1) were cultured under controlled (14.5 mM mannitol), normoglycemic (5.5 mM glucose), or HG (20 mM glucose) conditions in the absence or presence of the two phytochemicals for 48 h. Whereas HG conditions significantly induced histone acetylation, nuclear factor-kappa B (NF-κB) activation, interleukin 6, and tumor necrosis factor-α release from THP-1 cells; combination treatments with the two phytochemicals (500 nM fisetin, and l μM and 500 nM luteolin) suppressed NF-κB activity and inflammatory cytokine release...
June 26, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28650469/a-compartmentalized-phosphoinositide-signaling-axis-at-cilia-is-regulated-by-inpp5e-to-maintain-cilia-and-promote-sonic-hedgehog-medulloblastoma
#17
S E Conduit, V Ramaswamy, M Remke, D N Watkins, B J Wainwright, M D Taylor, C A Mitchell, J M Dyson
Sonic Hedgehog (SHH) signaling at primary cilia drives the proliferation and progression of a subset of medulloblastomas, the most common malignant paediatric brain tumor. Severe side effects associated with conventional treatments and resistance to targeted therapies has led to the need for new strategies. SHH signaling is dependent on primary cilia for signal transduction suggesting the potential for cilia destabilizing mechanisms as a therapeutic target. INPP5E is an inositol polyphosphate 5-phosphatase that hydrolyses PtdIns(4,5)P2 and more potently, the phosphoinositide (PI) 3-kinase product PtdIns(3,4,5)P3...
June 26, 2017: Oncogene
https://www.readbyqxmd.com/read/28650446/exosomes-from-plasmodium-infected-hosts-inhibit-tumor-angiogenesis-in-a-murine-lewis-lung-cancer-model
#18
Y Yang, Q Liu, J Lu, D Adah, S Yu, S Zhao, Y Yao, L Qin, L Qin, X Chen
Previous research to investigate the interaction between malaria infection and tumor progression has revealed that malaria infection can potentiate host immune response against tumor in tumor-bearing mice. Exosomes may play key roles in disseminating pathogenic host-derived molecules during infection because several studies have shown the involvement and roles of extracellular vesicles in cell-cell communication. However, the role of exosomes generated during Plasmodium infection in tumor growth, progression and angiogenesis has not been studied either in animals or in the clinics...
June 26, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28650230/get-real-evaluation-of-a-community-level-hiv-prevention-intervention-for-young-msm-who-engage-in-episodic-substance-use
#19
Jennifer Lauby, Lin Zhu, Mary Milnamow, Heather Batson, Lisa Bond, William Curran-Groome, Lee Carson
Young men who have sex with men (YMSM) have high rates of recreational drug use and binge drinking that are related to increases in unprotected sex and HIV risk. We describe the development of a community-level intervention focused on MSM ages 15 to 29 who identify as Black or White and who reported episodic use of alcohol and/or drugs. Intervention content included culturally-relevant role model stories and peer outreach. Outcome measures, including number of partners and a risk score indicating risk for HIV from protected or unprotected insertive or receptive anal sex, were examined over 36 months in a sample of YMSM in Philadelphia, the intervention site, and Baltimore, the comparison site...
June 2017: AIDS Education and Prevention: Official Publication of the International Society for AIDS Education
https://www.readbyqxmd.com/read/28650180/acculturation-acculturative-stressors-and-family-relationships-among-latina-o-immigrants
#20
Georgiana Bostean, Brian Joseph Gillespie
OBJECTIVES: Family relationships, widely recognized as core to Latino cultures, are known to vary for Latina/o immigrants based on time in the United States. Less is known about (a) how acculturation explains differences in family relationships by time in the US, and (b) whether acculturative stressors influence different aspects of immigrants' family relationships. Drawing on an expanded acculturation framework, we explore whether and how attitudinal familism, family contact, and family conflict among immigrant Latina/os vary based on acculturation and acculturative stressors...
June 26, 2017: Cultural Diversity & Ethnic Minority Psychology
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