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https://www.readbyqxmd.com/read/29778016/multiscale-reconstruction-of-a-synthetic-biomimetic-micro-niche-for-enhancing-and-monitoring-the-differentiation-of-stem-cells
#1
Rui Li, Jinming Li, Jianbin Xu, Dexter Siu Hong Wong, Xiaoyu Chen, Weihao Yuan, Liming Bian
Stem cells reside in a three-dimensional (3D) niche microenvironment, which provides specific cues, including cell-matrix interactions and soluble factors, that are essential to the differentiation of stem cells in vivo. Herein we demonstrate a general approach to the synthetic reconstruction of 3D biomimetic niche environment of stem cells by the multiscale combination of macroscopic porous hydrogels and a nanoscale upconversion nanoparticles (UCNP)-based nanocomplex. The porous biopolymeric hydrogels emulate the spongy bone microstructure and provide 3D environment conducive to the differentiation of seeded stem cells...
May 4, 2018: Biomaterials
https://www.readbyqxmd.com/read/29777979/a-qualitative-study-of-disengagement-in-disadvantaged-areas-of-the-uk-you-come-through-your-door-and-you-lock-that-door
#2
M Romeo-Velilla, N Ellis, G Hurst, S Grogan, C Gidlow
Health inequalities are a major concern in the UK. Power imbalances are associated with health inequalities and should be challenged through health promotion and empowering strategies, enabling individuals who feel powerless to take control over their own life and act on the determinants of health (Green and Tones, 2010). This study aimed to explore resident expectations of a community engagement programme that intended to empower communities to take action on pre-identified priorities. The programme targeted communities in deprived areas of a mid-sized city in the UK...
May 16, 2018: Health & Place
https://www.readbyqxmd.com/read/29777903/sox9-is-increased-in-arterial-plaque-and-stenosis-associated-with-synthetic-phenotype-of-vascular-smooth-muscle-cells-and-causes-alterations-in-extracellular-matrix-and-calcification
#3
Antje Augstein, Johannes Mierke, David M Poitz, Ruth H Strasser
Vascular smooth muscle cells (VSMC) exhibit a dual role in progression and maintenance of arteriosclerosis. They are fundamental for plaque stability but also can drive plaque progression. During pathogenic vascular remodeling, VSMC transdifferentiate into a phenotype with enhanced proliferation and migration. Moreover, they exert an increased capacity to generate extracellular matrix proteins. A special lineage of transdifferentiated VSMC expresses Sox9, a multi-functional transcription factor. The aim of the study was to examine the role of Sox9 in phenotypic alterations leading to arteriosclerosis...
May 16, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29777791/ticagrelor-protects-against-angii-induced-endothelial-dysfunction-by-alleviating-endoplasmic-reticulum-stress
#4
Xiaoyu Wang, Xuejie Han, Minghui Li, Yu Han, Yun Zhang, Shiqi Zhao, Yue Li
Ticagrelor has been reported to decrease cardiovascular mortality compared with clopidogrel. This benefit cannot be fully explained by the more efficient platelet inhibition. Many studies demonstrated that ticagrelor improved endothelial function, leaving the mechanism elusive though. The present study aims to investigate whether ticagrelor protects against endothelial dysfunction induced by angiotensinII (AngII) through alleviating endoplasmic reticulum (ER) stress. Male Sprague Dawley rats were infused with AngII or vehicle and administrated with ticagrelor or vehicle for 14 days...
May 16, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29777733/food-allergy-guidance-in-the-united-states-military-a-work-group-report-from-the-aaaai-military-allergy-and-immunology-assembly-maia
#5
Kirk Waibel, Rachel Lee, Christopher Coop, Yun Mendoza, Kevin White
A diagnosis of food allergy adversely impacts one's ability to join or remain in the military. Inadequate knowledge or misconceptions of current military-specific standards regarding food allergy and how these apply to enlistment, induction, and retention in the United States military can potentially lead to inaccurate counseling as each military service has specific regulations which impact the evaluation and decision-making process. Recognizing this knowledge gap, the American Allergy, Asthma, and Immunology (AAAAI) Military Allergy and Immunology Assembly (MAIA) established a Work Group who reviewed and summarized all aspects of military instructions, policies, and regulations regarding IgE mediated food allergy...
May 16, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29777708/identification-of-a-repressor-and-an-activator-of-azoreductase-gene-expression-in-pseudomonas-putida-and-xanthomonas-oryzae
#6
Wirongrong Whangsuk, Neal Toewiwat, James Dubbs, Ratiboot Sallabhan, Skorn Mongkolsuk, Suvit Loprasert
Genes responsible for the production of azoreductase enzymes in 2 g negative bacteria, the soil bacterium Pseudomonas putida (AzoP) and the plant pathogen Xanthomonas oryzae (AzoX), were identified. The deduced amino acid sequences of AzoP and AzoX, share 46% amino acid identity to each other. Two different bacterial transcription factors, a repressor (AzoPR) and an activator (AzoXR), in P. putida and X. oryzae, respectively, were found to be divergently oriented to their respective azoreductase genes. Both regulators are LysR-type transcriptional regulators (LTTR) that respond to the azo dye inducer, methyl red (MR)...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777645/-childbirth-is-not-a-sickness-a-woman-should-struggle-to-give-birth-exploring-continuing-popularity-of-home-births-in-western-kenya
#7
Violet Naanyu, Joyce Baliddawa, Beatrice Koech, Julie Karfakis, Nancy Nyagoha
More than 95% of Kenyan women receive antenatal care (ANC) and only 62% access skilled delivery. To explore women's opinion on delivery location, 20 focus group discussions were conducted at an urban and rural setting in western Kenya. Participants included health care workers, traditional birth attendants (TBAs), and women who attended at least four ANC visits and delivered. Six in-depth interviews were also conducted with a combination of women who gave birth in a facility and at home. Discussions were digitally recorded and transcribed for analysis...
March 2018: African Journal of Reproductive Health
https://www.readbyqxmd.com/read/29777625/is-methotrexate-an-effective-and-safe-treatment-for-maintaining-hair-regrowth-in-people-with-alopecia-totalis-a-critically-appraised-topic
#8
R Browne, L Stewart, H C Williams
AIM: To assess the effects of methotrexate for maintaining hair regrowth in alopecia totalis. METHODS: We critically appraised the literature identified from searching PubMed, Ovid MEDLINE, Ovid Embase and Cochrane Central (October 2017), using the search terms ("alopecia areata" OR "alopecia totalis" OR "alopecia universalis") AND (methotrexate). RESULTS: Two prospective studies and 11 retrospective case series were included comprising 226 patients with alopecia varying from 30% hair loss to alopecia universalis at baseline...
May 19, 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29777591/bioengineering-triacetic-acid-lactone-production-in-yarrowia-lipolytica-for-pogostone-synthesis
#9
James Yu, Jenny Landberg, Farbod Shavarebi, Virginia Bilanchone, Adam Okerlund, Umayangani Wanninayake, Le Zhao, George Kraus, Suzanne Sandmeyer
Yarrowia lipolytica is an oleaginous yeast that is recognized for its ability to accumulate high levels of lipids, which can serve as precursors to biobased fuels and chemicals. Polyketides such as triacetic acid lactone (TAL) can also serve as a precursor for diverse commodity chemicals. This study used Y. lipolytica as a host organism for the production of TAL via expression of the 2-pyrone synthase gene from Gerbera hybrida. Induction of lipid biosynthesis by nitrogen-limited growth conditions increased TAL titers...
May 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29777581/in-vivo-performance-of-a-visible-wavelength-optical-sensor-for-monitoring-intestinal-perfusion-and-oxygenation
#10
Mitchell B Robinson, Anna M Wisniowiecki, Ryan J Butcher, Mark A Wilson, M Nance Ericson, Gerard L Cote
Traumatic injury resulting in hemorrhage is a prevalent cause of death worldwide. The current standard of care for trauma patients is to restore hemostasis by controlling bleeding and administering intravenous volume resuscitation. Adequate resuscitation to restore tissue blood flow and oxygenation is critical within the first hours following admission to assess severity and avoid complications. However, current clinical methods for guiding resuscitation are not sensitive or specific enough to adequately understand the patient condition...
May 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29777547/tacrolimus-induced-asymptomatic-thrombotic-microangiopathy-diagnosed-by-laboratory-tests-in-pig-to-rhesus-corneal-xenotransplantation-a-case-report
#11
Jong-Min Kim, Jaeyoung Kim, Se-Hyun Choi, Jun-Seop Shin, Byoung-Hoon Min, Won Young Jeong, Ga-Eul Lee, Min-Sun Kim, Seeun Kwon, Mee Kum Kim, Chung-Gyu Park
Tacrolimus-associated thrombotic microangiopathy (TA-TMA) is a rare complication. TA-TMA is characterized by microangiopathic hemolytic anemia, thrombocytopenia, and organ damage due to thrombus. We report asymptomatic TA-TMA diagnosed by laboratory tests in pig-to-rhesus corneal xenotransplantation. Corneal transplantation had been conducted from a wild-type SNU miniature pig to a rhesus macaque. The veterinary records were retrospectively reviewed in this case. The immunosuppressive regimen consisted of rituximab, basiliximab, and IVIg as inductive therapies, and steroids with tacrolimus (0...
May 18, 2018: Xenotransplantation
https://www.readbyqxmd.com/read/29777502/oxi1-kinase-plays-a-key-role-in-resistance-of-arabidopsis-towards-aphids-myzus-persicae
#12
Tahsin Shoala, Martin G Edwards, Marc R Knight, Angharad M R Gatehouse
Plants have co-evolved with a diverse array of pathogens and insect herbivores and so have evolved an extensive repertoire of constitutive and induced defence mechanisms activated through complex signalling pathways. OXI1 kinase is required for activation of mitogen-activated protein kinases (MAPKs) and is an essential part of the signal transduction pathway linking oxidative burst signals to diverse downstream responses. Furthermore, changes in the levels of OXI1 appear to be crucial for appropriate signalling...
May 17, 2018: Transgenic Research
https://www.readbyqxmd.com/read/29777449/potential-of-bacillus-subtilis-lipopeptides-in-anti-cancer-i-induction-of-apoptosis-and-paraptosis-and-inhibition-of-autophagy-in-k562-cells
#13
Haobin Zhao, Lu Yan, Xiaoguang Xu, Chunmei Jiang, Junling Shi, Yawen Zhang, Li Liu, Shuzhen Lei, Dongyan Shao, Qingsheng Huang
The lipopeptide iturin from Bacillus subtilis has been found to have a potential inhibitory effect on breast cancer, alveolar adenocarcinoma, renal carcinoma, and colon adenocarcinoma. In this study, the potential of B. subtilis lipopeptides (a mixture of iturin homologues, concentration of 42.75%) to inhibit chronic myelogenous leukemia was evaluated using K562 myelogenous leukemia cells. The results showed that the lipopeptides could completely inhibit the growth of K562 at 100 μM, with an IC50 value of 65...
May 9, 2018: AMB Express
https://www.readbyqxmd.com/read/29777436/fatigue-related-risk-management-in-the-emergency-department-a-focus-group-study
#14
Pierre Bérastégui, Mathieu Jaspar, Alexandre Ghuysen, Anne-Sophie Nyssen
Fatigue has major implications on both patient safety and healthcare practitioner's well-being. Traditionally, two approaches can be used to reduce fatigue-related risk: reducing the likelihood of a fatigued operator working (i.e. fatigue reduction), or reducing the likelihood that a fatigued operator will make an error (i.e. fatigue proofing). Recent progress mainly focussed on fatigue reduction strategies such as reducing work hours. Yet it has to be recognized that such approach has not wholly overcome the experience of fatigue...
May 18, 2018: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/29777430/the-artificial-humic-substance-hs1500-does-not-inhibit-photosynthesis-of-the-green-alga-desmodesmus-armatus-in-vivo-but-interacts-with-the-photosynthetic-apparatus-of-isolated-spinach-thylakoids-in-vitro
#15
Matthias Gilbert, Hanno Bährs, Christian E W Steinberg, Christian Wilhelm
Humic substances (HSs) can influence the growth and composition of freshwater phytoplankton assemblage. Since HSs contain many phenolic and quinonic moieties and cause growth reductions in eco-physiological field experiments, HSs are considered photosystem II herbicides. To test this specific mode of action in vivo and in vitro, respectively, we used intact cells of the green alga Desmodesmus armatus, as well as thylakoids isolated from spinach (Spinacia oleracea) as a model system for the green algal chloroplast...
May 18, 2018: Photosynthesis Research
https://www.readbyqxmd.com/read/29777223/card9-s12n-facilitates-the-production-of-il-5-by-alveolar-macrophages-for-the-induction-of-type-2-immune-responses
#16
Xia Xu, Jin-Fu Xu, Guoxing Zheng, Hai-Wen Lu, Jie-Lin Duan, Wei Rui, Jian-Hong Guan, Li-Qing Cheng, Dan-Dan Yang, Ming-Chao Wang, Quan-Zhen Lv, Jian-Xiong Li, Xueqiang Zhao, Chun-Xia Chen, Peng Shi, Xin-Ming Jia, Xin Lin
The adaptor CARD9 functions downstream of C-type lectin receptors (CLRs) for the sensing of microbial infection, which leads to responses by the TH 1 and TH 17 subsets of helper T cells. The single-nucleotide polymorphism rs4077515 at CARD9 in the human genome, which results in the substitution S12N (CARD9S12N ), is associated with several autoimmune diseases. However, the function of CARD9S12N has remained unknown. Here we generated CARD9S12N knock-in mice and found that CARD9S12N facilitated the induction of type 2 immune responses after engagement of CLRs...
May 18, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29777105/phenotypic-diversification-by-enhanced-genome-restructuring-after-induction-of-multiple-dna-double-strand-breaks
#17
Nobuhiko Muramoto, Arisa Oda, Hidenori Tanaka, Takahiro Nakamura, Kazuto Kugou, Kazuki Suda, Aki Kobayashi, Shiori Yoneda, Akinori Ikeuchi, Hiroki Sugimoto, Satoshi Kondo, Chikara Ohto, Takehiko Shibata, Norihiro Mitsukawa, Kunihiro Ohta
DNA double-strand break (DSB)-mediated genome rearrangements are assumed to provide diverse raw genetic materials enabling accelerated adaptive evolution; however, it remains unclear about the consequences of massive simultaneous DSB formation in cells and their resulting phenotypic impact. Here, we establish an artificial genome-restructuring technology by conditionally introducing multiple genomic DSBs in vivo using a temperature-dependent endonuclease TaqI. Application in yeast and Arabidopsis thaliana generates strains with phenotypes, including improved ethanol production from xylose at higher temperature and increased plant biomass, that are stably inherited to offspring after multiple passages...
May 18, 2018: Nature Communications
https://www.readbyqxmd.com/read/29777094/biological-monitoring-and-lung-function-assessment-among-workers-exposed-to-chromium-in-the-ceramic-industry
#18
Fatemeh Kargar Shouroki, Seyed Jamaleddin Shahtaheri, Farideh Golbabaei, Abolfazle Barkhordari, Abbas Rahimi-Froushani
BACKGROUND: Chromium exposure occurs in various industries such as ceramics industry. The main disadvantage of chromium is high toxicity when absorbed by the body. This study aimed to determine and compare urinary chromium values in the pre- and post-shift of ceramic glazers and the control group; investigate urinary chromium value according to the study variables; compare pulmonary function tests between ceramic glazers vs. the control group. STUDY DESIGN: A cross-sectional study...
March 19, 2018: Journal of Research in Health Sciences
https://www.readbyqxmd.com/read/29777051/cd36-initiates-the-secretory-phenotype-during-the-establishment-of-cellular-senescence
#19
Mengyang Chong, Tao Yin, Rui Chen, Handan Xiang, Lifeng Yuan, Yi Ding, Christopher C Pan, Zhen Tang, Peter B Alexander, Yinjun Jia, Qi-Jing Li, Xiao-Fan Wang
Cellular senescence is a unique cell fate characterized by stable proliferative arrest and the extensive production and secretion of various inflammatory proteins, a phenomenon known as the senescence-associated secretory phenotype (SASP). The molecular mechanisms responsible for generating a SASP in response to senescent stimuli remain largely obscure. Here, using unbiased gene expression profiling, we discover that the scavenger receptor CD36 is rapidly upregulated in multiple cell types in response to replicative, oncogenic, and chemical senescent stimuli...
May 18, 2018: EMBO Reports
https://www.readbyqxmd.com/read/29777041/evolving-role-of-diet-in-the-pathogenesis-and-treatment-of-inflammatory-bowel-diseases
#20
REVIEW
Arie Levine, Rotem Sigall Boneh, Eytan Wine
Recent advances in basic and clinical science over the last 3 years have dramatically altered our appreciation of the role of diet in inflammatory bowel diseases (IBD). The marked increase in incidence of these diseases along with the important role of non-genetic susceptibility among patients with IBD has highlighted that these diseases have a strong environmental component. Progress in the field of microbiome and IBD has demonstrated that microbiome appears to play an important role in pathogenesis, and that diet may in turn impact the composition and functionality of the microbiome...
May 18, 2018: Gut
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