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https://www.readbyqxmd.com/read/28461333/msh-homeobox-1-msx1-and-msx2-overexpressing-bone-marrow-derived-mesenchymal-stem-cells-resemble-blastema-cells-and-enhance-regeneration-in-mice
#1
Leila Taghiyar, Mahdi Hesaraki, Forough Azam Sayahpour, Leila Satarian, Samaneh Hosseini, Nasser Aghdami, Mohamadreza Baghaban Eslaminejad
Amputation of the proximal region in mammals is not followed by regeneration because blastema cells (BCs) and expression of regenerative genes such as Msh homeobox (Msx) genes are absent in this animal group. The lack of BCs and positional information in other cells are therefore the main obstacle to therapeutic approaches for limb regeneration. Hence, this study aimed to create blastema- like cells (BlCs) by overexpressing Msx1 and Msx2 genes in mouse bone marrow- derived mesenchymal stem cells (mBMSCs) to regenerate a proximally amputated digit tip...
May 1, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28431985/quercetin-interferes-with-the-fluid-volume-and-receptivity-development-of-the-uterus-in-rats-during-the-peri-implantation-period
#2
Huma Shahzad, Nelli Giribabu, Kamarulzaman Karim, Normadiah Kassim, Sekaran Muniandy, Kilari Eswar Kumar, Naguib Salleh
HYPOTHESIS: Quercetin could induce changes to the fluid volume and receptivity development of the uterus during peri-implantation period. METHODS: Female rats were treated with quercetin (10, 25 and 50mg/kg/day) subcutaneously beginning from day-1 pregnancy. Uterus was harvested at day-4 (following three days quercetin treatment) for morphological, ultra-structural, protein and mRNA expressional changes and plasma sex-steroid levels analyses. In another cohort of rats, implantation rate was determined at day-6 (following five days quercetin treatment)...
April 18, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28193178/nodal-and-bmp-expression-during-the-transition-to-pentamery-in-the-sea-urchin-heliocidaris-erythrogramma-insights-into-patterning-the-enigmatic-echinoderm-body-plan
#3
Demian Koop, Paula Cisternas, Valerie B Morris, Dario Strbenac, Jean Yee Hwa Yang, Gregory A Wray, Maria Byrne
BACKGROUND: The molecular mechanisms underlying the development of the unusual echinoderm pentameral body plan and their likeness to mechanisms underlying the development of the bilateral plans of other deuterostomes are of interest in tracing body plan evolution. In this first study of the spatial expression of genes associated with Nodal and BMP2/4 signalling during the transition to pentamery in sea urchins, we investigate Heliocidaris erythrogramma, a species that provides access to the developing adult rudiment within days of fertilization...
February 13, 2017: BMC Developmental Biology
https://www.readbyqxmd.com/read/28153781/msx1-modulated-muscle-satellite-cells-retain-a-primitive-state-and-exhibit-an-enhanced-capacity-for-osteogenic-differentiation
#4
Ke Ding, Wen-Ying Liu, Qiang Zeng, Fang Hou, Jian-Zhong Xu, Zhong Yang
Multipotent muscle satellite cells (MuSCs) have been identified as potential seed cells for bone tissue engineering. However, MuSCs exhibit a rapid loss of stemness after in vitro culturing, thereby compromising their therapeutic efficiency. Muscle segment homeobox gene 1 (msx1) has been found to induce the dedifferentiation of committed progenitor cells, as well as terminally differentiated myotubes. In this study, a Tet-off retroviral gene delivery system was used to modulate msx1 expression. After ten passages, MuSCs that did not express msx-1 (e...
March 1, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28153754/expression-of-dlx-5-and-msx-1-in-craniofacial-skeletons-and-ilia-of-rats-treated-with-zoledronate
#5
Bin Xuan, Pan Yang, Shichao Wu, Lin Li, Jian Zhang, Wenyi Zhang
PURPOSE: Because of the different embryologic origins of the craniofacial skeleton and ilium, differences in gene expression patterns have been observed between the jaw bones and ilium. Distal-less homeobox (Dlx) genes and Msh homeobox genes, particularly Dlx-5 and Msx-1, play major roles in cell differentiation and osteogenesis. The purpose of this study was to investigate the effects of zoledronate (ZOL) on the craniofacial skeleton and ilium by detecting changes in Dlx-5 and Msx-1 expression at both the protein and messenger RNA levels...
January 5, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28112327/anti-glycation-and-anti-oxidative-effects-of-a-phenolic-enriched-maple-syrup-extract-and-its-protective-effects-on-normal-human-colon-cells
#6
Weixi Liu, Zhengxi Wei, Hang Ma, Ang Cai, Yongqiang Liu, Jiadong Sun, Nicholas A DaSilva, Shelby L Johnson, Louis J Kirschenbaum, Bongsup P Cho, Joel A Dain, David C Rowley, Zahir A Shaikh, Navindra P Seeram
Oxidative stress and free radical generation accelerate the formation of advanced glycation endproducts (AGEs) which are linked to several chronic diseases. Published data suggest that phenolic-rich plant foods, show promise as natural anti-AGEs agents due to their anti-oxidation capacities. A phenolic-enriched maple syrup extract (MSX) has previously been reported to show anti-inflammatory and neuroprotective effects but its anti-AGE effects remain unknown. Therefore, herein, we investigated the anti-glycation and anti-oxidation effects of MSX using biochemical and biophysical methods...
February 22, 2017: Food & Function
https://www.readbyqxmd.com/read/28062508/arterial-calcification-in-diabetes-mellitus-preclinical-models-and-translational-implications
#7
John N Stabley, Dwight A Towler
Diabetes mellitus increasingly afflicts our aging and dysmetabolic population. Type 2 diabetes mellitus and the antecedent metabolic syndrome represent the vast majority of the disease burden-increasingly prevalent in children and older adults. However, type 1 diabetes mellitus is also advancing in preadolescent children. As such, a crushing wave of cardiometabolic disease burden now faces our society. Arteriosclerotic calcification is increased in metabolic syndrome, type 2 diabetes mellitus, and type 1 diabetes mellitus-impairing conduit vessel compliance and function, thereby increasing the risk for dementia, stroke, heart attack, limb ischemia, renal insufficiency, and lower extremity amputation...
February 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27927784/adenosine-dependent-phrenic-motor-facilitation-is-inflammation-resistant
#8
Ibis M Agosto-Marlin, Nicole L Nichols, Gordon S Mitchell
Phrenic motor facilitation (pMF), a form of respiratory plasticity, can be elicited by acute intermittent hypoxia (i.e., phrenic long-term facilitation, pLTF) or direct application of drugs to the cervical spinal cord. Moderate acute intermittent hypoxia (mAIH; 3 × 5-min episodes of 35-50 mmHg arterial Po2, 5-min normoxic intervals) induces pLTF by a serotonin-dependent mechanism; mAIH-induced pLTF is abolished by mild systemic inflammation induced by a low dose of lipopolysaccharide (LPS; 100 μg/kg ip). In contrast, severe acute intermittent hypoxia (sAIH; 3 × 5-min episodes of 25-30 mmHg arterial Po2, 5-min normoxic intervals) elicits pLTF by a distinct, adenosine-dependent mechanism...
February 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27917906/novel-human-mutation-and-crispr-cas-genome-edited-mice-reveal-the-importance-of-c-terminal-domain-of-msx1-in-tooth-and-palate-development
#9
Silvia Naomi Mitsui, Akihiro Yasue, Kiyoshi Masuda, Takuya Naruto, Yoshiyuki Minegishi, Seiichi Oyadomari, Sumihare Noji, Issei Imoto, Eiji Tanaka
Several mutations, located mainly in the MSX1 homeodomain, have been identified in non-syndromic tooth agenesis predominantly affecting premolars and third molars. We identified a novel frameshift mutation of the highly conserved C-terminal domain of MSX1, known as Msx homology domain 6 (MH6), in a Japanese family with non-syndromic tooth agenesis. To investigate the importance of MH6 in tooth development, Msx1 was targeted in mice with CRISPR/Cas system. Although heterozygous MH6 disruption did not alter craniofacial development, homozygous mice exhibited agenesis of lower incisors with or without cleft palate at E16...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27878872/immobilizing-molecular-metal-dithiolene-diamine-complexes-on-2d-metal-organic-frameworks-for-electrocatalytic-h2-production
#10
Renhao Dong, Zhikun Zheng, Diana C Tranca, Jian Zhang, Naisa Chandrasekhar, Shaohua Liu, Xiaodong Zhuang, Gotthard Seifert, Xinliang Feng
Carbon electrocatalysts consisting of metal complexes such as MNx or MSx are promising alternatives to high-cost Pt catalysts for the hydrogen evolution reaction (HER). However, the exact HER active sites remain elusive. Here, molecular metal dithiolene-diamine (MS2 N2 , M=Co and Ni), metal bis(dithiolene) (MS4 ), and metal bis(diamine) (MN4 ) complexes were selectively incorporated into carbon-rich 2D metal-organic frameworks (2D MOFs) as model carbon electrocatalysts. The 2D MOF single layers, powders, and composites with graphene were thus prepared and showed definite active sites for H2 generation...
November 22, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27853423/ethanol-and-caffeine-effects-on-social-interaction-and-recognition-in-mice-involvement-of-adenosine-a2a-and-a1-receptors
#11
Laura López-Cruz, Noemí San-Miguel, Pilar Bayarri, Younis Baqi, Christa E Müller, John D Salamone, Mercé Correa
Ethanol and caffeine are frequently consumed in combination and have opposite effects on the adenosine system: ethanol metabolism leads to an increase in adenosine levels, while caffeine is a non-selective adenosine A1/A2A receptor antagonist. These receptors are highly expressed in striatum and olfactory tubercle, brain areas involved in exploration and social interaction in rodents. Ethanol modulates social interaction processes, but the role of adenosine in social behavior is still poorly understood. The present work was undertaken to study the impact of ethanol, caffeine and their combination on social behavior, and to explore the involvement of A1 and A2A receptors on those actions...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27694229/phosphinothricin-acetyltransferases-identified-using-in-vivo-in-vitro-and-bioinformatic-analyses
#12
Chelsey M VanDrisse, Kristy L Hentchel, Jorge C Escalante-Semerena
Acetylation of small molecules is widespread in nature, and in some cases, cells use this process to detoxify harmful chemicals. Streptomyces species utilize a Gcn5 N-acetyltransferase (GNAT), known as Bar, to acetylate and detoxify a self-produced toxin, phosphinothricin (PPT), a glutamate analogue. Bar homologues, such as MddA from Salmonella enterica, acetylate methionine analogues such as methionine sulfoximine (MSX) and methionine sulfone (MSO), but not PPT, even though Bar homologues are annotated as PPT acetyltransferases...
December 15, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27692439/cvd-grown-monolayer-graphene-induces-osteogenic-but-not-odontoblastic-differentiation-of-dental-pulp-stem-cells
#13
Han Xie, Melissa Chua, Intekhab Islam, Ricardo Bentini, Tong Cao, José Carlos Viana-Gomes, Antônio Hélio Castro Neto, Vinicius Rosa
OBJECTIVE: The objective was to investigate the potential of graphene (Gp) to induce odontogenic and osteogenic differentiation in dental pulp stem cells (DPSC). METHODS: Gp was produced by chemical vapor deposition. DPSC were seeded on Gp or glass (Gl). Cells were maintained in culture medium for 28 days. Every two days, culture medium from Gp was used to treat cells on Gl and vice versa. Mineralization and differentiation of DPSC on all substrates were evaluated after 14 and 28 days by alizarin red S staining, qPCR, immunofluorescence and FACS...
September 27, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27689785/methionine-sulfoximine-supplementation-enhances-productivity-in-gs-chok1sv-cell-lines-through-glutathione-biosynthesis
#14
Marc Feary, Andrew J Racher, Robert J Young, C Mark Smales
In Lonza Biologics' GS Gene Expression System™, recombinant protein-producing GS-CHOK1SV cell lines are generated by transfection with an expression vector encoding both GS and the protein product genes followed by selection in MSX and glutamine-free medium. MSX is required to inhibit endogenous CHOK1SV GS, and in effect create a glutamine auxotrophy in the host that can be complemented by the expression vector encoded GS in selected cell lines. However, MSX is not a specific inhibitor of GS as it also inhibits the activity of GCL (a key enzyme in the glutathione biosynthesis pathway) to a similar extent...
September 30, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27641728/alkaline-phosphatase-and-oct-3-4-as-useful-markers-for-predicting-susceptibility-of-human-deciduous-teeth-derived-dental-pulp-cells-to-reprogramming-factor-induced-ips-cells
#15
Emi Inada, Issei Saitoh, Naoko Kubota, Miki Soda, Kazunari Matsueda, Tomoya Murakami, Tadashi Sawami, Akiko Kagoshima, Youichi Yamasaki, Masahiro Sato
AIM: The aim of the present study was to prove that primary cells enriched with stem cells are more easily reprogrammed to generate induced pluripotent stem (iPS) cells than those with scarce numbers of stem cells. METHODS: We surveyed the alkaline phosphatase (ALP) activity in five primarily-isolated human deciduous teeth-derived dental pulp cells (HDDPC) with cytochemical staining to examine the possible presence of stem cells. Next, the expression of stemness-specific factors, such as OCT(Octumer-binding transcription factor)3/4, NANOG, SOX2(SRY (sex determining region Y)-box 2), CD90, muscle segment homeodomain homeobox (MSX) 1, and MSX2, was assessed with a reverse transcription polymerase chain reaction method...
September 18, 2016: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/27497935/effort-related-motivational-effects-of-the-pro-inflammatory-cytokine-interleukin-6-pharmacological-and-neurochemical-characterization
#16
Samantha E Yohn, Yumna Arif, Allison Haley, Guiseppe Tripodi, Younis Baqi, Christa E Müller, Noemi San Miguel, Mercè Correa, John D Salamone
RATIONALE: Motivational dysfunctions such as anergia, fatigue, and reduced effort expenditure are common in patients with depression and other disorders. Pro-inflammatory cytokines are implicated in depression, and cytokine administration induces motivational deficits in humans. OBJECTIVES: These studies focused on the effects of the cytokine interleukin-6 (IL-6) on effort-related decision-making. METHODS: Rats were assessed using the concurrent fixed ratio 5-lever pressing/chow feeding choice procedure, which measures the tendency of rats to work for a preferred food (high carbohydrate pellets) in the presence of a concurrently available but less preferred substitute (lab chow)...
October 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27466333/sustained-hypoxia-elicits-competing-spinal-mechanisms-of-phrenic-motor-facilitation
#17
Michael J Devinney, Nicole L Nichols, Gordon S Mitchell
UNLABELLED: Acute intermittent hypoxia (AIH) induces phrenic long-term facilitation (pLTF), a form of spinal motor plasticity. Competing mechanisms give rise to phrenic motor facilitation (pMF; a general term including pLTF) depending on the severity of hypoxia within episodes. In contrast, moderate acute sustained hypoxia (mASH) does not elicit pMF. By varying the severity of ASH and targeting competing mechanisms of pMF, we sought to illustrate why moderate AIH (mAIH) elicits pMF but mASH does not...
July 27, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27418278/effects-of-a-standardized-phenolic-enriched-maple-syrup-extract-on-%C3%AE-amyloid-aggregation-neuroinflammation-in-microglial-and-neuronal-cells-and-%C3%AE-amyloid-induced-neurotoxicity-in-caenorhabditis-elegans
#18
Hang Ma, Nicholas A DaSilva, Weixi Liu, Pragati P Nahar, Zhengxi Wei, Yongqiang Liu, Priscilla T Pham, Rebecca Crews, Dhiraj A Vattem, Angela L Slitt, Zahir A Shaikh, Navindra P Seeram
Published data supports the neuroprotective effects of several phenolic-containing natural products, including certain fruit, berries, spices, nuts, green tea, and olive oil. However, limited data are available for phenolic-containing plant-derived natural sweeteners including maple syrup. Herein, we investigated the neuroprotective effects of a chemically standardized phenolic-enriched maple syrup extract (MSX) using a combination of biophysical, in vitro, and in vivo studies. Based on biophysical data (Thioflavin T assay, transmission electron microscopy, circular dichroism, dynamic light scattering, and zeta potential), MSX reduced amyloid β1-42 peptide (Aβ1-42) fibrillation in a concentration-dependent manner (50-500 μg/mL) with similar effects as the neuroprotective polyphenol, resveratrol, at its highest test concentration (63...
November 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27312535/reduced-homeobox-protein-msx1-in-human-endometrial-tissue-is-linked-to-infertility
#19
Alan D Bolnick, Jay M Bolnick, Brian A Kilburn, Tamika Stewart, Jonathan Oakes, Javier Rodriguez-Kovacs, Hamid-Reza Kohan-Ghadr, Jing Dai, Michael P Diamond, Yasushi Hirota, Sascha Drewlo, Sudhansu K Dey, D Randall Armant
STUDY QUESTION: Is protein expression of the muscle segment homeobox gene family member MSX1 altered in the human secretory endometrium by cell type, developmental stage or fertility? SUMMARY ANSWER: MSX1 protein levels, normally elevated in the secretory phase endometrium, were significantly reduced in endometrial biopsies obtained from women of infertile couples. WHAT IS KNOWN ALREADY: Molecular changes in the endometrium are important for fertility in both animals and humans...
September 2016: Human Reproduction
https://www.readbyqxmd.com/read/27283997/graphene-oxide-based-substrate-physical-and-surface-characterization-cytocompatibility-and-differentiation-potential-of-dental-pulp-stem-cells
#20
Vinicius Rosa, Han Xie, Nileshkumar Dubey, Thulasi T Madanagopal, Sneha S Rajan, Julien Luc Paul Morin, Intekhab Islam, Antônio Hélio Castro Neto
OBJECTIVE: The aim of this study was to evaluate the cytotoxicity and differentiation potential of a graphene oxide (GO)-based substrate using dental pulp stem cell (DPSC). METHODS: GO was obtained via chemical exfoliation of graphite using the modified Hummer's method and dispersed in water-methanol solution. 250μL of 1.5mg/mL solution were added to a cover slip and allowed to dry (25°C, 24h). GO-based substrate was characterized by Raman spectroscopy, AFM and contact angle...
August 2016: Dental Materials: Official Publication of the Academy of Dental Materials
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