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https://www.readbyqxmd.com/read/27911036/properties-of-embryoid-bodies
#1
REVIEW
Joshua M Brickman, Palle Serup
Embryoid bodies (EBs) have been popular in vitro differentiation models for pluripotent stem cells for more than five decades. Initially, defined as aggregates formed by embryonal carcinoma cells, EBs gained more prominence after the derivation of karyotypically normal embryonic stem cells from early mouse blastocysts. In many cases, formation of EBs constitutes an important initial step in directed differentiation protocols aimed at generated specific cell types from undifferentiated stem cells. Indeed state-of-the-art protocols for directed differentiation of cardiomyocytes still rely on this initial EB step...
December 2, 2016: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/27909258/prioritizing-and-funding-the-uganda-nutrition-action-plan
#2
Amanda Pomeroy-Stevens, Alexis D'Agostino, Nancy Adero, Hannah Foehringer Merchant, Abel Muzoora, Ezekiel Mupere, Edgar Agaba, Lidan Du
BACKGROUND: In 2010, Uganda began developing its first multisectoral nutrition plan, the Uganda Nutrition Action Plan (UNAP), to reduce malnutrition. While the UNAP signals high-level commitment to addressing nutrition, knowledge gaps remain about how to successfully implement such a plan. OBJECTIVE: We tracked the UNAP's influence on the process of priority setting and funding for nutrition from 2013 to 2015. METHODS: This study used a longitudinal mixed methods design to track qualitative and budgetary changes related to UNAP processes nationally as well as in 2 study districts...
December 2016: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/27877072/cultured-human-periosteum-derived-cells-can-differentiate-into-osteoblasts-in-a-perioxisome-proliferator-activated-receptor-gamma-mediated-fashion-via-bone-morphogenetic-protein-signaling
#3
Jin-Eun Chung, Jin-Ho Park, Jeong-Won Yun, Young-Hoon Kang, Bong-Wook Park, Sun-Chul Hwang, Yeong-Cheol Cho, Iel-Yong Sung, Dong Kyun Woo, June-Ho Byun
The differentiation of mesenchymal stem cells towards an osteoblastic fate depends on numerous signaling pathways, including activation of bone morphogenetic protein (BMP) signaling components. Commitment to osteogenesis is associated with activation of osteoblast-related signal transduction, whereas inactivation of this signal transduction favors adipogenesis. BMP signaling also has a critical role in the processes by which mesenchymal stem cells undergo commitment to the adipocyte lineage. In our previous study, we demonstrated that an agonist of the perioxisome proliferator-activated receptor γ (PPARγ), a master regulator of adipocyte differentiation, stimulates osteoblastic differentiation of cultured human periosteum-derived cells...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27862226/histone-h4-methyltransferase-suv420h2-maintains-fidelity-of-osteoblast-differentiation
#4
Khani Farzaneh, Roman Thaler, Christopher R Paradise, David R Deyle, Marianne Kruijthof-de Julio, Mario Galindo, Jonathan A Gordon, Gary S Stein, Amel Dudakovic, Andre J van Wijnen
Osteogenic lineage commitment and progression is controlled by multiple signaling pathways (e.g., WNT, BMP, FGF) that converge on bone-related transcription factors. Access of osteogenic transcription factors to chromatin is controlled by epigenetic regulators that generate post-translational modifications of histones ("histone code"), as well as read, edit and/or erase these modifications. Our understanding of the biological role of epigenetic regulators in osteoblast differentiation remains limited. Therefore, we performed next-generation RNA sequencing (RNA-seq) and established which chromatin-related proteins are robustly expressed in mouse bone tissues (e...
November 9, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27859962/concise-review-geminin-a-tale-of-two-tails-dna-replication-and-transcriptional-epigenetic-regulation-in-stem-cells
#5
Alexandra L Patmanidi, Spyridon Champeris Tsaniras, Dimitris Karamitros, Christina Kyrousi, Zoi Lygerou, Stavros Taraviras
Molecular mechanisms governing maintenance, commitment, and differentiation of stem cells are largely unexploited. Molecules involved in the regulation of multiple cellular processes are of particular importance for stem cell physiology, as they integrate different signals and coordinate cellular decisions related with self-renewal and fate determination. Geminin has emerged as a critical factor in DNA replication and stem cell differentiation in different stem cell populations. Its inhibitory interaction with Cdt1, a member of the prereplicative complex, ensures the controlled timing of DNA replication and, consequently, genomic stability in actively proliferating cells...
November 11, 2016: Stem Cells
https://www.readbyqxmd.com/read/27848246/mir-2861-is-involved-in-osteogenic-commitment-of-human-periodontal-ligament-stem-cells-grown-onto-3d-scaffold
#6
F Diomede, I Merciaro, S Martinotti, M Cavalcanti, S Caputi, E Mazzon, O Trubiani
miR-2861 endorsing osteoblast differentiation through the overexpression of Runt-related transcription factor 2 (RUNX2) protein has been recently described. In this study we evaluated: the performance of living construct, composed by human Periodontal Ligament Stem Cells (hPDLSCs) and 3D scaffold (EXg), and the behaviour of miR-2861/RUNX2 expression pathway on the osteogenic commitment. Human PDLSCs were seeded with and without EXg scaffold and cultured under basal and osteogenic conditions. Morphological features, adhesiveness and differentiation abilities were analysed using scanning electron and confocal laser scanning microscopy...
November 16, 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27771457/identification-of-nf-%C3%AE%C2%BAb-inhibitors-following-shenfu-injection-and-bioactivity-integrated-uplc-q-tof-ms-and-screening-for-related-anti-inflammatory-targets-in-vitro-and-in-silico
#7
Pan Li, Bin Lv, Xiaoqing Jiang, Ting Wang, Xianghui Ma, Nianwei Chang, Xiaoying Wang, Xiumei Gao
ETHNOPHARMACOLOGICAL RELEVANCE: Shenfu injection (SFI) is a commercial medicinal product approved by the China Food and Drug Administration that is widely used in the treatment of stroke and coronary heart disease. However, the material basis and the mechanism of SFI are not fully understood. AIM OF THE STUDY: With network pharmacology analysis, our research committed to identify the anti-inflammatory ingredients and mechanism of SFI by combining high-throughput screening...
October 19, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27758858/enhancer-of-zeste-homolog-2-inhibition-stimulates-bone-formation-and-mitigates-bone-loss-caused-by-ovariectomy-in-skeletally-mature-mice
#8
Amel Dudakovic, Emily T Camilleri, Scott M Riester, Christopher R Paradise, Martina Gluscevic, Thomas M O'Toole, Roman Thaler, Jared M Evans, Huihuang Yan, Malayannan Subramaniam, John R Hawse, Gary S Stein, Martin A Montecino, Meghan E McGee-Lawrence, Jennifer J Westendorf, Andre J van Wijnen
Perturbations in skeletal development and bone degeneration may result in reduced bone mass and quality, leading to greater fracture risk. Bone loss is mitigated by bone protective therapies, but there is a clinical need for new bone-anabolic agents. Previous work has demonstrated that Ezh2 (enhancer of zeste homolog 2), a histone 3 lysine 27 (H3K27) methyltransferase, suppressed differentiation of osteogenic progenitors. Here, we investigated whether inhibition of Ezh2 can be leveraged for bone stimulatory applications...
November 18, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27736777/genome-wide-association-study-for-cell-mediated-response-of-dogs-naturally-infected-by-leishmania-infantum
#9
L F S Batista, Y T Utsunomiya, T B F da Silva, R A Dias, T Y Tomokane, A D Pacheco, V L R da Matta, F T Silveira, M Marcondes, C M Nunes, M D Laurenti
A genome-wide association study (GWAS) could unravel the complexity of the cell-mediated immunity (CMI) to canine leishmaniasis (CanL). Thereby we committed to scan 110,165 single-nucleotide polymorphisms (SNPs) aiming to identify chromosomal regions associated to leishmanin skin test (LST), lymphocyte proliferation assay (LPA) and cytokines responses to further understanding the role played by the CMI in the outcome of the natural Leishmania infantum infection in 189 dogs. Based on LST and LPA, four CMI profiles were identified (LST-/LPA-, LST+/LPA-, LST-/LPA+ and LST+/LPA+), which were not associated to subclinical infected or diseased dogs...
October 10, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27711125/memory-distortion-and-its-avoidance-an-event-related-potentials-study-on-false-recognition-and-correct-rejection
#10
Sara Cadavid, Maria Soledad Beato
Memory researchers have long been captivated by the nature of memory distortions and have made efforts to identify the neural correlates of true and false memories. However, the underlying mechanisms of avoiding false memories by correctly rejecting related lures remains underexplored. In this study, we employed a variant of the Deese/Roediger-McDermott paradigm to explore neural signatures of committing and avoiding false memories. ERP were obtained for True recognition, False recognition, Correct rejection of new items, and, more importantly, Correct rejection of related lures...
2016: PloS One
https://www.readbyqxmd.com/read/27699898/adipose-tissue-regulates-insulin-sensitivity-role-of-adipogenesis-de-novo-lipogenesis-and-novel-lipids
#11
U Smith, B B Kahn
Obesity, the major cause of the current global epidemic of type 2 diabetes (T2D), induces insulin resistance in peripheral insulin target tissues. Several mechanisms have been identified related to cross-talk between adipose tissue, skeletal muscle and liver. These mechanisms involve both increased free fatty acid release and altered secretion of adipokines from adipose tissue. A major determinant of metabolic health is the ability of subcutaneous adipose tissue (SAT) to store excess fat rather than allowing it to accumulate in ectopic depots including liver (i...
November 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27694305/in-vitro-germ-cell-differentiation-from-embryonic-stem-cells-of-mice-induction-control-by-bmp4-signaling
#12
Zohreh Makoolati, Mansoureh Movahedin, Mehdi Forouzandeh-Moghadam
The present study aims to confirm and analyze germ-cell related patterns and specific gene expressions at a very early stage of cell commitment. Following the XY cytogenetic confirmation of the CCE mouse embryonic stem cells (mESCs) line, cells were cultured to form embrioid bodies (EBs). Expression pattern assessment of the Mvh, Stra8, α6 and β1 integrin genes in ESC and 1-3-day-old EB showed that all genes except α6 integrin were expressed in the ESC. The mean calibration of Mvh, Stra8 and α6 integrin expression significantly increased upon EB formation compared to the ESCs...
September 30, 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27639079/forkhead-box-a2-regulated-biliary-heterogeneity-and-senescence-during-cholestatic-liver-injury
#13
Kelly McDaniel, Fanyin Meng, Nan Wu, Keisaku Sato, Julie Venter, Francesca Bernuzzi, Pietro Invernizzi, Tianhao Zhou, Konstantina Kyritsi, Ying Wan, Qiaobing Huang, Paolo Onori, Heather Francis, Eugenio Gaudio, Shannon Glaser, Gianfranco Alpini
BACKGROUND & AIMS: Biliary-committed progenitor cells (small cholangiocytes, SMCCs) from small bile ducts are more resistant to hepatobiliary injury than large mouse cholangiocytes (LGCCs) from large bile ducts. The definitive endoderm marker, FoxA2 is the key transcriptional factor that regulates cell differentiation and tissue regeneration. Our aim was to characterize the translational role of FoxA2 during cholestatic liver injury. METHODS: mRNA expression in SMCCs and LGCCs was assessed by PCR array analysis...
September 17, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27632788/real-time-h2-o2-measurements-in-bone-marrow-mesenchymal-stem-cells-mscs-show-increased-antioxidant-capacity-in-cells-from-osteoporotic-women
#14
Flavia Román, Carla Urra, Omar Porras, Ana María Pino, Clifford J Rosen, Juan Pablo Rodríguez
Oxidative stress (OS) derived from an increase in intracellular reactive oxygen species (ROS) is a major determinant of aging and lifespan. It has also been associated with several age-related disorders, like postmenopausal osteoporosis of Mesenchymal stem cells (MSCs). MSCs are the common precursors for osteoblasts and adipocytes; appropriate commitment and differentiation of MSCs into a specific phenotype is modulated, among other factors, by ROS balance. MSCs have shown more resistance to ROS than differentiated cells, and their redox status depends on complex and abundant anti-oxidant mechanisms...
September 15, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27591224/tnf-receptor-signaling-inhibits-cardiomyogenic-differentiation-of-cardiac-stem-cells-and-promotes-a-neuroadrenergic-like-fate
#15
Tariq Hamid, Yuanyuan Xu, Mohamed Ameen Ismahil, Qianhong Li, Steven P Jones, Aruni Bhatnagar, Roberto Bolli, Sumanth D Prabhu
Despite expansion of resident cardiac stem cells (CSCs; c-kit(+)Lin(-)) after myocardial infarction, endogenous repair processes are insufficient to prevent adverse cardiac remodeling and heart failure (HF). This suggests that the microenvironment in post-ischemic and failing hearts compromises CSC regenerative potential. Inflammatory cytokines, such as tumor necrosis factor-α (TNF), are increased after infarction and in HF; whether they modulate CSC function is unknown. As the effects of TNF are specific to its two receptors (TNFRs), we tested the hypothesis that TNF differentially modulates CSC function in a TNFR-specific manner...
November 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27585240/preparation-and-applications-of-organotypic-thymic-slice-cultures
#16
Aditi Sood, Mengqi Dong, Heather J Melichar
Thymic selection proceeds in a unique and highly organized thymic microenvironment resulting in the generation of a functional, self-tolerant T cell repertoire. In vitro models to study T lineage commitment and development have provided valuable insights into this process. However, these systems lack the complete three-dimensional thymic milieu necessary for T cell development and, therefore, are incomplete approximations of in vivo thymic selection. Some of the challenges related to modeling T cell development can be overcome by using in situ models that provide an intact thymic microenvironment that fully supports thymic selection of developing T cells...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27575522/an-educational-intervention-in-road-safety-among-children-and-teenagers-in-mexico
#17
S Treviño-Siller, L E Pacheco-Magaña, P Bonilla-Fernández, C Rueda-Neria, L Arenas-Monreal
OBJECTIVE: The purpose of this article is to describe a public school-based educational intervention (EI) designed to increase knowledge, improve attitudes, and change practices related to road safety. METHODS: We used a mixed-methods evaluation of a road traffic safety baseline diagnosis conducted in 4 public schools, 2 primary and 2 secondary. Research was organized into 4 phases: (1) diagnosis, (2) EI design, (3) implementation, and (4) evaluation. We used convenience sampling (n = 219 students) across schools and applied a pre-/posttest design based on quantitative and qualitative data...
August 30, 2016: Traffic Injury Prevention
https://www.readbyqxmd.com/read/27557894/sensory-input-attenuation-allows-predictive-sexual-response-in-yeast
#18
Alvaro Banderas, Mihaly Koltai, Alexander Anders, Victor Sourjik
Animals are known to adjust their sexual behaviour depending on mate competition. Here we report similar regulation for mating behaviour in a sexual unicellular eukaryote, the budding yeast Saccharomyces cerevisiae. We demonstrate that pheromone-based communication between the two mating types, coupled to input attenuation by recipient cells, enables yeast to robustly monitor relative mate abundance (sex ratio) within a mixed population and to adjust their commitment to sexual reproduction in proportion to their estimated chances of successful mating...
2016: Nature Communications
https://www.readbyqxmd.com/read/27551921/irreversibility-of-t-cell-specification-insights-from-computational-modelling-of-a-minimal-network-architecture
#19
Erica Manesso, Hao Yuan Kueh, George Freedman, Ellen V Rothenberg, Carsten Peterson
BACKGROUND/OBJECTIVES: A cascade of gene activations under the control of Notch signalling is required during T-cell specification, when T-cell precursors gradually lose the potential to undertake other fates and become fully committed to the T-cell lineage. We elucidate how the gene/protein dynamics for a core transcriptional module governs this important process by computational means. METHODS: We first assembled existing knowledge about transcription factors known to be important for T-cell specification to form a minimal core module consisting of TCF-1, GATA-3, BCL11B, and PU...
2016: PloS One
https://www.readbyqxmd.com/read/27462843/-prevalence-of-intimate-partner-violence-and-associated-factors-after-disclosing-the-diagnosis-of-a-sexually-transmissible-disease
#20
Roumayne Fernandes Vieira Andrade, Maria Alix Leite Araújo, Maria Inês Costa Dourado, Angelica Barbosa Espinosa Miranda, Claudia Bastos da Silveira Reis
The objective of this study was to investigate factors associated with intimate partner violence after disclosing the diagnosis of sexually transmissible diseases (STDs) in Fortaleza, Ceará State, Brazil. This cross-sectional study enrolled 221 individuals treated at STD clinics. Multivariate logistic regression was performed. A total of 28.1% of individuals committed some type of intimate partner violence after disclosure of the diagnosis. Committing intimate partner violence was associated with alcohol use (OR = 2...
July 21, 2016: Cadernos de Saúde Pública
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