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https://www.readbyqxmd.com/read/28719877/functional-genomic-assessment-of-2-2-bis-bromomethyl-1-3-propanediol-induced-cytotoxicity-in-a-single-gene-knockout-library-of-e-%C3%A2-coli
#1
Miao Guan, Xiaowei Zhang
Functional gene fingerprinting of chemicals could be used to understand the direct gene-chemical interaction in the process of toxification from a genome-wide scale. 2, 2-bis (bromomethyl)-1, 3-propanediol (BMP) is a brominated flame retardant with widespread production but with very limited toxicological data. Here the cytotoxicity of BMP was assessed by Escherichia coli (E. coli) functional genome-wide knockout mutants screening and the underlying molecular mechanism was investigated. The median inhibition concentration (IC50) of BMP was 1...
July 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28718708/enhanced-bone-repair-induced-by-human-adipose-derived-stem-cells-on-osteogenic-extracellular-matrix-ornamented-small-intestinal-submucosa
#2
Chi Zhang, Mei Li, Jinjin Zhu, Fangmiao Luo, Jiyuan Zhao
AIM: Our aim was to design an osteogenic extracellular matrix (ECM) coated bioscaffold and to apply it to critical bone defect repair with adipose-derived stem cells (ADSCs). MATERIALS & METHODS: Morphology of scaffolds was scanned by scanning electron microscope. Cell adhesion, proliferation and osteogenic differentiation of ADSCs on ECM-small intestinal submucosa (SIS) were evaluated by immunofluorescences staining, cell counting kit-8 and real-time qPCR, respectively...
July 18, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28716575/strategic-targeting-of-multiple-bmp-receptors-prevents-trauma-induced-heterotopic-ossification
#3
Shailesh Agarwal, Shawn J Loder, Christopher Breuler, John Li, David Cholok, Cameron Brownley, Jonathan Peterson, Hsiao H Hsieh, James Drake, Kavitha Ranganathan, Yashar S Niknafs, Wenzhong Xiao, Shuli Li, Ravindra Kumar, Ronald Tompkins, Michael T Longaker, Thomas A Davis, Paul B Yu, Yuji Mishina, Benjamin Levi
Trauma-induced heterotopic ossification (tHO) is a condition of pathologic wound healing, defined by the progressive formation of ectopic bone in soft tissue following severe burns or trauma. Because previous studies have shown that genetic variants of HO, such as fibrodysplasia ossificans progressiva (FOP), are caused by hyperactivating mutations of the type I bone morphogenetic protein receptor (T1-BMPR) ACVR1/ALK2, studies evaluating therapies for HO have been directed primarily toward drugs for this specific receptor...
July 15, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28716552/is-heterotopic-ossification-getting-nervous-the-role-of-the-peripheral-nervous-system-in-heterotopic-ossification
#4
Eleanor L Davis, Alan R Davis, Zbigniew Gugala, Elizabeth A Olmsted-Davis
Heterotopic ossification (HO), or de novo bone formation in soft tissue, is often observed following traumatic injury. Recent studies suggest that peripheral nerves may play a key functional role in this process. The results supporting a neurological basis for HO are examined in this article. Evidence supports the fact that BMPs released from bone matrix possess the capacity to induce HO. However, the process cannot be recapitulated using recombinant proteins without extremely high doses suggesting other components are required for this process...
July 14, 2017: Bone
https://www.readbyqxmd.com/read/28716551/application-of-human-induced-pluripotent-stem-cells-to-model-fibrodysplasia-ossificans-progressiva
#5
Emilie Barruet, Edward C Hsiao
Fibrodysplasia ossificans progressiva (FOP) is a genetic condition characterized by massive heterotopic ossification. FOP patients with mutations in the Activin A type I receptor (ACVR1), a bone morphogenetic protein (BMP) receptor. FOP is a progressive and debilitating disease characterized by bone formation flares that often occur after trauma. Since it is often difficult or impossible to obtain large amounts of tissue from human donors due to the risks of inciting more heterotopic bone formation, human induced pluripotent stem cells (hiPSCs) provide an attractive source for establishing in vitro disease models and for applications in drug screening...
July 14, 2017: Bone
https://www.readbyqxmd.com/read/28715143/repetitive-short-span-application-of-extracellular-calcium-is-osteopromotive-to-osteoprogenitor-cells
#6
Hyungjin Jung, Thomas Mbimba, Mustafa Unal, Ozan Akkus
Extracellular calcium ([Ca(2+) ]E ) concentration has been suggested to stimulate osteoblastic activity; thus, calcium can be used to enhance fracture healing. However, systemic administration of calcium at high dose levels may cause physiological problems such as hypercalcemia. Short span application of single or repetitive [Ca(2+) ]E stimulus may be suggested as a novel regimen to reduce such side effects. However, osteopromotive effect of such short term [Ca(2+) ]E stimulus on osteoprogenitor cells has not yet been evaluated yet...
July 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28714176/osteogenic-differentiation-of-3d-cultured-mesenchymal-stem-cells-induced-by-bioactive-peptides
#7
Vera Lukasova, Matej Buzgo, Vera Sovkova, Jana Dankova, Michala Rampichova, Evzen Amler
OBJECTIVES: Bioactive peptides derived from receptor binding motifs of native proteins are a potent source of bioactive molecules that can induce signalling pathways. These peptides could substitute for osteogenesis promoting supplements. The work presented here compares three kinds of bioactive peptides derived from collagen III, bone morphogenetic protein 7 (BMP-7) and BMP-2 with their potential osteogenic activity on the model of porcine mesenchymal stem cells (pMSCs). MATERIALS AND METHODS: pMSCs were cultured on electrospun polycaprolactone nanofibrous scaffolds with different concentrations of the bioactive peptides without addition of any osteogenic supplement...
August 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28713017/intracellular-co-delivery-of-sr-ion-and-phenamil-drug-through-mesoporous-bioglass-nanocarriers-synergizes-bmp-signaling-and-tissue-mineralization
#8
Jung-Hwan Lee, Nandin Mandakhbayar, Ahmed El-Fiqi, Haw-Won Kim
Inducing differentiation and maturation of resident multipotent stem cells (MSCs) is an important strategy to regenerate hard tissues in mal-calcification conditions. Here we explore a co-delivery approach of therapeutic molecules comprised of ion and drug through a mesoporous bioglass nanoparticle (MBN) for this purpose. Recently, MBN has offered unique potential as a nanocarrier for hard tissues, in terms of high mesoporosity, bone bioactivity (and possibly degradability), tunable delivery of biomolecules, and ionic modification...
July 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28711939/baicalin-attenuates-monocrotaline-induced-pulmonary-hypertension-through-bone-morphogenetic-protein-signaling-pathway
#9
Zhaohua Zhang, Luan Zhang, Chao Sun, Feng Kong, Jue Wang, Qian Xin, Wen Jiang, Kaili Li, Ou Chen, Yun Luan
Baicalin, a flavonoid compound extracted from roots of Scutellaria baicalensis Georgi (huang qin), it has been shown to effectively attenuates pulmonary hypertension (PH), however, the potential mechanism remains unexplored. In this study, we investigated the potential mechanism of baicalin on monocrotaline (MCT)-induced PH in rats. The results showed that baicalin attenuated lung damage in PH rat model through inhibiting the pulmonary arterial smooth muscle cell proliferation and induction of cells apoptosis...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28711495/evidence-for-constitutive-bone-morphogenetic-protein-2-secretion-by-m1-macrophages-constitutive-auto-paracrine-osteogenic-signaling-by-bmp-2-in-m1-macrophages
#10
Prabhatchandra R Dube, Lutz Birnbaumer, Guillermo Vazquez
Mechanisms mediating vascular calcification recapitulate osteogenic processes encompassing bone formation and imply participation of bone related proteins such as bone morphogenetic protein-2 (BMP-2). Macrophages are amongst the cells that contribute to vascular ossification by releasing cytokines that induce an osteogenic program in vascular smooth muscle cells, and also by becoming themselves osteoclast-like cells. In inflammatory vascular disease, the macrophage population in the vascular wall is diverse, with the M1 or inflammatory, and the M2 or anti-inflammatory macrophage types being dominant...
July 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28711182/slaughterhouse-by-products-treatment-using-anaerobic-digestion
#11
Ioannis Moukazis, Frantseska-Maria Pellera, Evangelos Gidarakos
The objective of the present study is to evaluate the use of animal by-products (ABP) as substrates for anaerobic digestion, aiming at methane production. Specifically, four ABP of Category 2 and 3, namely (i) stomach and rumen, (ii) stomach contents, (iii) breasts and reproductive organs and (iv) bladders and intestines with their contents, were selected. The methane potential of each ABP was initially determined, while the feasibility of anaerobic co-digestion of ABP with two agroindustrial waste, i.e. orange peels and olive leaves was also studied...
July 12, 2017: Waste Management
https://www.readbyqxmd.com/read/28709740/effects-of-size-and-thermophilic-pre-hydrolysis-of-banana-peel-during-anaerobic-digestion-and-biomethanation-potential-of-key-tropical-fruit-wastes
#12
Mary Jesuyemi Odedina, Boonya Charnnok, Kanyarat Saritpongteeraka, Sumate Chaiprapat
Methane production potential of tropical fruit wastes, namely lady-finger banana peel, rambutan waste and longan waste were compared using BMP assay and stoichiometric modified Buswell and Mueller equation. Methane yields based on volatile solid (VS) were in the order of ground banana peel, chopped banana peel, chopped longan waste, and chopped rambutan waste (330.6, 268.3, 234.6 and 193.2 mLCH4/gVS) that corresponded to their calculated biodegradability. In continuous operations of banana peel digestion at feed concentrations based on total solid (TS) 1-2%, mesophilic single stage digester run at 20-day hydraulic retention time (20-day HRT) failed at 2%TS, but successfully recovered at 1...
July 11, 2017: Waste Management
https://www.readbyqxmd.com/read/28709427/investigation-of-irradiated-volume-in-linac-based-brain-hypo-fractionated-stereotactic-radiotherapy
#13
Mark Ruschin, Arjun Sahgal, Hany Soliman, Sten Myrehaug, May Tsao, Collins Yeboah, Arman Sarfehnia, Brige Chugh, Alex Kiss, Young Lee
BACKGROUND: Emerging techniques such as brain hypo-fractionated radiotherapy (HF-RT) involve complex cases with limited guidelines for plan quality and normal tissue tolerances. The purpose of the present study was to statistically parameterize irradiated volume independently of dose prescription, or margin to determine what spread in achievable irradiated volume one may expect for a given case. METHODS: We defined EXT as the total tissue within the external contour of the patient (including the target) and we defined BMP as the contour of the brain minus PTV...
July 14, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28708493/effects-of-fsh-addition-to-an-enriched-medium-containing-insulin-and-egf-after-long-term-culture-on-functionality-of-equine-ovarian-biopsy-tissue
#14
F L N Aguiar, G D A Gastal, G M Ishak, M O Gastal, D I A Teixeira, J M Feugang, J R Figueiredo, E L Gastal
The effect of FSH supplementation on an enriched cultured medium containing insulin (10 ng/mL) and EGF (50 ng/mL) was investigated on in vitro culture of equine ovarian biopsy tissue. Ovarian tissue fragments were collected from mares (n = 10) and distributed in the following treatments: noncultured control, cultured control, and cultured + FSH. Both treated groups were cultured for 7 or 15 days. The end points evaluated were: follicular morphology, estradiol levels in the culture medium, fluorescence intensity for TUNEL, EGFR and Ki-67 detection, and gene expression of GDF-9, BMP-15, and Cyclin-D2 in the ovarian tissue...
April 28, 2017: Theriogenology
https://www.readbyqxmd.com/read/28708380/a-novel-strategy-for-quantitative-analysis-of-isomeric-bis-monoacylglycero-phosphate-and-phosphatidylglycerol-species-by-shotgun-lipidomics-after-one-step-methylation
#15
Miao Wang, Juan Pablo Palavicini, Adam Cseresznye, Xianlin Han
Understanding the cellular function and metabolism of bis(monoacylglycero)phosphate (BMP), an important but low abundance class of phospholipids, has been hindered due to its difficulties to be resolved from its structural isomer (i.e., phosphatidylglycerol, PG, another low abundance class of phospholipids). A novel strategy for quantitative analysis of BMP and PG species was developed after one-step methylation of lipid extracts in combination with high mass accuracy/resolution mass spectrometry after direct infusion (i...
July 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28708309/bone-healing-in-an-aged-murine-fracture-model-is-characterized-by-sustained-callus-inflammation-and-decreased-cell-proliferation
#16
John H Hebb, Jason W Ashley, Lee McDaniel, Luke A Lopas, John Tobias, Kurt D Hankenson, Jaimo Ahn
Geriatric fractures take longer to heal and heal with more complications than those of younger patients; however, the mechanistic basis for this difference in healing is not well understood. To improve this understanding, we investigated cell and molecular differences in fracture healing between 5 month-old (young adult) and 25 month-old (geriatric) mice healing utilizing high-throughput analysis of gene expression. Mice underwent bilateral tibial fractures and fracture calluses were harvested at 5, 10, and 20 days post fracture (DPF) for analysis...
July 14, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28707627/mussel-inspired-nano-building-block-assemblies-for-mimicking-extracellular-matrix-microenvironments-with-multiple-functions
#17
Zhenming Wang, Zhanrong Jia, Yanan Jiang, Pengfei Li, Lu Han, Xiong Lu, Fuzeng Ren, Ke-Feng Wang, Huipin Yuan
The assembly of nano-building blocks is an effective way to produce artificial extracellular matrix microenvironments with hierarchical micro/nano structures. However, it is hard to assemble different types of nano-building blocks, to form composite coatings with multiple functions, by traditional layer-by-layer (LbL) self-assembly methods. Inspired by the mussel adhesion mechanism, we developed polydopamine (PDA)-decorated bovine serum albumin nanoparticles (BSA-NPs) and nano-hydroxyapatite (nano-HA), and assembled them to form bioactive coatings with micro/nano structures encapsulating bone morphogenetic protein-2 (BMP-2)...
July 14, 2017: Biofabrication
https://www.readbyqxmd.com/read/28705896/bmp-signaling-maintains-a-mesoderm-progenitor-cell-state-in-the-mouse-tailbud
#18
Richa Sharma, Maxwell E R Shafer, Eric Bareke, Mathieu Tremblay, Jacek Majewski, Maxime Bouchard
Caudal somites are generated from a pool of progenitor cells located in the tailbud region. These progenitor cells form the presomitic mesoderm that gradually differentiates into somites under the action of the segmentation clock. The signals responsible for tailbud mesoderm progenitor pool maintenance during axial elongation are still elusive. Here, we show that Bmp signaling is sufficient to activate the entire mesoderm progenitor gene signature in primary cultures of caudal mesoderm cells. Bmp signaling acts through the key regulatory genes Brachyury (T) and Nkx1-2 and contributes to the activation of several other regulators of the mesoderm progenitor gene network...
July 13, 2017: Development
https://www.readbyqxmd.com/read/28705792/deletion-of-fstl1-follistatin-like-1-from-the-endocardial-endothelial-lineage-causes-mitral-valve-disease
#19
Stuti Prakash, Luis J J Borreguero, Marc Sylva, Lorena Flores Ruiz, Fereshte Rezai, Quinn D Gunst, José-Luis de la Pompa, Jan M Ruijter, Maurice J B van den Hoff
OBJECTIVE: Fstl1 (Follistatin-like 1) is a secreted protein that is expressed in the atrioventricular valves throughout embryonic development, postnatal maturation, and adulthood. In this study, we investigated the loss of Fstl1 in the endocardium/endothelium and their derived cells. APPROACH AND RESULTS: We conditionally ablated Fstl1 from the endocardial lineage using a transgenic Tie2-Cre mouse model. These mice showed a sustained Bmp and Tgfβ signaling after birth...
July 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28704415/c-elegans-sma-10-regulates-bmp-receptor-trafficking
#20
Ryan J Gleason, Mehul Vora, Ying Li, Nanci S Kane, Kelvin Liao, Richard W Padgett
Signal transduction of the conserved transforming growth factor-β (TGFβ) family signaling pathway functions through two distinct serine/threonine transmembrane receptors, the type I and type II receptors. Endocytosis orchestrates the assembly of signaling complexes by coordinating the entry of receptors with their downstream signaling mediators. Recently, we showed that the C. elegans type I bone morphogenetic protein (BMP) receptor SMA-6, part of the TGFβ family, is recycled through the retromer complex while the type II receptor, DAF-4 is recycled in a retromer-independent, ARF-6 dependent manner...
2017: PloS One
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