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https://www.readbyqxmd.com/read/28937845/pharmacokinetics-of-beclomethasone-dipropionate-delivered-by-breath-actuated-inhaler-and-metered-dose-inhaler-in-healthy-subjects
#1
Calvin J Small, Michael Gillespie
BACKGROUND: Breath-actuated inhalers (BAIs) eliminate the need for hand-breath coordination required of pressurized metered-dose inhalers (MDIs). This pharmacokinetic study compared systemic exposure following beclomethasone dipropionate delivery through BAI versus MDI. METHODS: This open-label, three-period crossover, single-dose study randomized healthy subjects aged 18-45 years (N = 72) to 1 of 6 treatment sequences containing beclomethasone dipropionate BAI 160 mcg (40 mcg/inhalation, 4 inhalations), beclomethasone dipropionate BAI 320 mcg (80 mcg/inhalation, 4 inhalations), and beclomethasone dipropionate MDI 320 mcg (80 mcg/inhalation, 4 inhalations)...
September 22, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28924381/osthole-promotes-bone-fracture-healing-through-activation-of-bmp-signaling-in-chondrocytes
#2
Pinger Wang, Jun Ying, Cheng Luo, Xing Jin, Shanxing Zhang, Taotao Xu, Lei Zhang, Meng Mi, Di Chen, Peijian Tong, Hongting Jin
Osthole is a bioactive coumarin derivative and has been reported to be able to enhance bone formation and improve fracture healing. However, the molecular mechanism of Osthole in bone fracture healing has not been fully defined. In this study we determined if Osthole enhances bone fracture healing through activation of BMP2 signaling in mice. We performed unilateral open transverse tibial fracture procedure in 10-week-old C57BL/6 mice which were treated with or without Osthole. Our previous studies demonstrated that chondrocyte BMP signaling is required for bone fracture healing, in this study we also performed tibial fracture procedure in Cre-negative and Col2-Cre;Bmp2(flox/flox) conditional knockout (KO) mice (Bmp2(Col2Cre) ) to determine if Osthole enhances fracture healing in a BMP2-dependent manner...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28886382/distinct-mesenchymal-lineages-and-niches-promote-epithelial-self-renewal-and-myofibrogenesis-in-the-lung
#3
Jarod A Zepp, William J Zacharias, David B Frank, Christina A Cavanaugh, Su Zhou, Michael P Morley, Edward E Morrisey
The lung is an architecturally complex organ comprising a heterogeneous mixture of various epithelial and mesenchymal lineages. We use single-cell RNA sequencing and signaling lineage reporters to generate a spatial and transcriptional map of the lung mesenchyme. We find that each mesenchymal lineage has a distinct spatial address and transcriptional profile leading to unique niche regulatory functions. The mesenchymal alveolar niche cell is Wnt responsive, expresses Pdgfrα, and is critical for alveolar epithelial cell growth and self-renewal...
September 7, 2017: Cell
https://www.readbyqxmd.com/read/28880245/evaluation-of-the-healing-potential-of-demineralized-dentin-matrix-fixed-with-recombinant-human-bone-morphogenetic-protein-2-in-bone-grafts
#4
Sang-Yun Kim, Young-Kyun Kim, Yeoung-Hyun Park, Joo-Cheol Park, Jeong-Kui Ku, In-Woong Um, Ji-Yun Kim
We aimed to evaluate the efficacy of demineralized dentin matrix (DDM) fixed with recombinant human bone morphogenetic protein-2 (rhBMP-2) through an experimental and a clinical study. Unilateral upper second and third premolars of eight beagles were extracted. A mucoperiosteal flap was elevated around the extraction socket, and a bone defect was made using a surgical drill. Each DDM was fixed with rhBMP-2, and autogenous bone was grafted at the bone defect area with a collagenous membrane. The beagles were euthanized at two, four, eight, and 12 weeks after receiving the bone graft...
September 7, 2017: Materials
https://www.readbyqxmd.com/read/28866105/dietary-phlorizin-enhances-osteoblastogenic-bone-formation-through-enhancing-%C3%AE-catenin-activity-via-gsk-3%C3%AE-inhibition-in-a-model-of-senile-osteoporosis
#5
Lucia Dwi Antika, Eun-Jung Lee, Yun-Ho Kim, Min-Kyung Kang, Sin-Hye Park, Dong Yeon Kim, Hyeongjoo Oh, Yean-Jung Choi, Young-Hee Kang
Osteoporosis is one of the most prevalent forms of age-related bone diseases. Increased bone loss with advancing age has become a grave public health concern. This study examined whether phlorizin and phloretin, dihydrochalcones in apple peels, inhibited senile osteoporosis through enhancing osteoblastogenic bone formation in cell-based and aged mouse models. Submicromolar phloretin and phlorizin markedly stimulated osteoblast differentiation of MC3T3-E1 cells with increased transcription of Runx2 and osteocalcin...
July 28, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28856336/effect-of-canine-cortical-bone-demineralization-on-osteogenic-differentiation-of-adipose-derived-mesenchymal-stromal-cells
#6
Kwangrae Jo, Yongsun Kim, Seung Hoon Lee, Yong Seok Yoon, Wan Hee Kim, Oh-Kyeong Kweon
Demineralized bone allografts and mesenchymal stromal cells have been used to promote bone regeneration. However, the degree to which cortical bone should be demineralized for use in combination with adipose-derived mesenchymal stromal cells (Ad-MSCs) remains to be clarified. In this study, the in vitro osteogenic ability of Ad-MSCs on allografts was investigated in relation to the extent of demineralization. Three treatment groups were established by varying exposure time to 0.6 N HCL: partially demineralized (PDB; 12 h), fully demineralized (FDB; 48 h), and non-demineralized bone (NDB; 0 h, as a control)...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28852936/down-regulation-of-pax2-promotes-in-vitro-differentiation-of-podocytes-from-human-cd34-cells
#7
Manne Mudhu Sunitha, Lokanathan Srikanth, Pasupuleti Santhosh Kumar, Chodimella Chandrasekhar, Potukuchi Venkata Gurunadha Krishna Sarma
Podocytes are major kidney cells that help in glomerular filtration and any damage or loss is a major event in the progression of kidney diseases. Understanding podocytes development will help in designing therapeutic strategies against these renal diseases. Therefore, in vitro generation of podocytes from adult hematopoietic CD34(+) stem cells is explored in the present study. Apheretically, isolated human HSCs from peripheral blood showed the presence of CD34 surface glycoprotein through immunocytochemistry (ICC) and flowcytometry...
August 29, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28847094/biological-hydrolysis-pretreatment-on-secondary-sludge-enhancement-of-anaerobic-digestion-and-mechanism-study
#8
Huihuang H Ding, Sheng Chang, Yi Liu
The performance of biological hydrolysis (BH) pretreatment on municipal secondary sludge was evaluated in this study. During 6-day BH at 42°C (BH42), soluble chemical oxygen demand (sCOD) increased from 175.2±38.2mg/L to 3314.5±683.4mg/L; the dominant volatile fatty acid (VFA) was acetic acid, and its concentration increased from 41.5±2.1mg/L to 786.0±133.2mg/L. The extracted extracellular polymeric substances (EPS) from untreated secondary sludge contained three main fractions, and Fraction I gradually decreased from 133...
November 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28840458/biogas-production-from-distilled-grain-waste-by-thermophilic-dry-anaerobic-digestion-pretreatment-of-feedstock-and-dynamics-of-microbial-community
#9
Ting-Ting Wang, Zhao-Yong Sun, Yu-Lian Huang, Li Tan, Yue-Qin Tang, Kenji Kida
Distilled grain waste (DGW) eluted from the Chinese liquor making process poses potential serious environmental problems. The objective of this study is to evaluate the feasibility of converting DGW to biogas by thermophilic dry anaerobic digestion. To improve biogas production, the effects of dilute H2SO4 and thermal pretreatment on DGW were evaluated by biochemical methane potential (BMP) tests. The results indicate that 90 °C thermal pretreatment provided the highest methane production at 212.7 mL/g-VTSadd...
August 24, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28836172/organic-gallium-treatment-improves-osteoporotic-fracture-healing-through-affecting-the-opg-rankl-ratio-and-expression-of-serum-inflammatory-cytokines-in-ovariectomized-rats
#10
Jiashi Wang, Ming He, Guangbin Wang, Qin Fu
This study aimed to investigate the impact of organic gallium (OG) on osteoporotic fracture healing in ovariectomized female Sprague-Dawley rats, as well as study the mechanisms of OG on osteoporotic fracture healing. Forty-five female Sprague-Dawley rats were divided into three groups: sham operation group (Sxas control group), ovariectomized group (Ovx), and Ovx treated with OG group (Ovx + OG). Rat femoral fractures were studied using a standardized fracture-healing model utilizing bone fixation with an intramedullary pin...
August 24, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28829997/msx2-is-required-for-vascular-smooth-muscle-cells-osteoblastic-differentiation-but-not-calcification-in-insulin-resistant-ob-ob-mice
#11
Maria Claudina Andrade, Luciana S Carmo, Elisangela Farias-Silva, Marcel Liberman
BACKGROUND AND AIMS: Obesity and diabetes potentiate vascular calcification by increasing vascular smooth muscle cells osteoblastic differentiation mediated by the transcription factor Msx2 and bone morphogenetic protein-2 signaling. However, Bmp-2/Msx2 crosstalk to induce VSMC osteogenic phenotype transition and calcification is poorly understood in diabetes. We aimed to investigate mechanisms underlying Bmp-2-driven VSMC osteogenic differentiation and calcification in leptin-deficient ob/ob mice...
July 29, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28816659/low-frequency-and-broadband-vibration-energy-harvesting-using-base-mounted-piezoelectric-transducers
#12
Robert Koven, Matthew Mills, Richard Gale, Burak Aksak
Piezoelectric vibration energy harvesters often consist of a cantilevered beam composed of a support layer and one or two piezoelectric layers with a tip mass. While this configuration is advantageous for maximizing electromechanical coupling, the mechanical properties of the piezoelectric material can place limitations on harvester size and resonant frequency. Here, we present numerical and experimental results from a new type of piezoelectric energy harvester in which the mechanical properties and the resonant frequency of the cantilever beam resonator are effectively decoupled from the piezoelectric component...
August 14, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28810575/increased-bone-morphogenetic-protein-6-in-follicular-fluid-and-granulosa-cells-may-correlate-with-fertilization-and-embryo-quality-in-humans
#13
Ying Liang, Qinying Cao, Xing Gao, Huilan Du
Bone morphogenetic protein-6 (BMP-6), which is a member of the transforming growth factor-β superfamily, is associated with the regulation of bone development and various physiological processes. In the present study, the expression of BMP-6 in follicular fluid and granulosa cells (GCs) from pregnant and non-pregnant patients was explored. A total of 44 pregnant patients (pregnant group) and 36 non-pregnant patients (non-pregnant group) were recruited for the present study. The expression of BMP-6 was detected using western blotting and reverse transcription-quantitative polymerase chain reaction...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809380/production-of-bone-mineral-material-and-bmp-2-in-osteoblasts-cultured-on-double-acid-etched-titanium
#14
R Velázquez-Cayón, G Castillo-Dalí, J-R Corcuera-Flores, M-A Serrera-Figallo, R Castillo-Oyagüe, M González-Martín, J-C Gutierrez-Pérez, D Torres-Lagares
BACKGROUND: The study of osteoblasts and their osteogenic functions is essential in order to understand them and their applications in implantology. In this sense, this study try to study BMP-2 production and bone matrix deposition, in addition to other biological variables, in osteoblasts cultured on a rough double acid-etched titanium surface (Osseotite®, Biomet 3i, Palm Beach Garden, Florida, USA) in comparison to a smooth titanium surface (machined) and a control Petri dish. MATERIALS AND METHODS: An in vitro prospective study...
August 15, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28803236/enhancement-of-bone-healing-by-local-administration-of-carbon-nanotubes-functionalized-with-sodium-hyaluronate-in-rat-tibiae
#15
Vanessa B Andrade, Marcos A Sá, Renato M Mendes, Paulo A Martins-Júnior, Gerluza A B Silva, Bruna R Sousa, Marcelo V Caliari, Erick S Ávila, Luiz Orlando Ladeira, Rodrigo R Resende, Anderson J Ferreira
It has been reported that carbon nanotubes (CNTs) serve as nucleation sites for the deposition of bone matrix and cell proliferation. Here, we evaluated the effects of multi-walled CNTs (MWCNTs) on bone repair of rat tibiae. Furthermore, because sodium hyaluronate (HY) accelerates bone restoration, we associated CNTs with HY (HY-MWCNTs) in an attempt to boost bone repair. The bone defect was created by a 1.6-mm-diameter drill. After 7 and 14 days, tibiae were processed for histological and morphometric analyses...
August 12, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28760336/dietary-magnesium-supplementation-prevents-and-reverses-vascular-and-soft-tissue-calcifications-in-uremic-rats
#16
Juan M Diaz-Tocados, Alan Peralta-Ramirez, María E Rodríguez-Ortiz, Ana I Raya, Ignacio Lopez, Carmen Pineda, Carmen Herencia, Addy Montes de Oca, Noemi Vergara, Sonja Steppan, M Victoria Pendon-Ruiz de Mier, Paula Buendía, Andrés Carmona, Julia Carracedo, Juan F Alcalá-Díaz, Joao Frazao, Julio M Martínez-Moreno, Antonio Canalejo, Arnold Felsenfeld, Mariano Rodriguez, Escolástico Aguilera-Tejero, Yolanda Almadén, Juan R Muñoz-Castañeda
Although magnesium has been shown to prevent vascular calcification in vitro, controlled in vivo studies in uremic animal models are limited. To determine whether dietary magnesium supplementation protects against the development of vascular calcification, 5/6 nephrectomized Wistar rats were fed diets with different magnesium content increasing from 0.1 to 1.1%. In one study we analyzed bone specimens from rats fed 0.1%, 0.3%, and 0.6% magnesium diets, and in another study we evaluated the effect of intraperitoneal magnesium on vascular calcification in 5/6 nephrectomized rats...
July 28, 2017: Kidney International
https://www.readbyqxmd.com/read/28758906/activin-a-enhances-mtor-signaling-to-promote-aberrant-chondrogenesis-in-fibrodysplasia-ossificans-progressiva
#17
Kyosuke Hino, Kazuhiko Horigome, Megumi Nishio, Shingo Komura, Sanae Nagata, Chengzhu Zhao, Yonghui Jin, Koichi Kawakami, Yasuhiro Yamada, Akira Ohta, Junya Toguchida, Makoto Ikeya
Fibrodysplasia ossificans progressiva (FOP) is a rare and intractable disease characterized by extraskeletal bone formation through endochondral ossification. Patients with FOP harbor point mutations in ACVR1, a type I receptor for BMPs. Although mutated ACVR1 (FOP-ACVR1) has been shown to render hyperactivity in BMP signaling, we and others have uncovered a mechanism by which FOP-ACVR1 mistransduces BMP signaling in response to Activin-A, a molecule that normally transduces TGF-β signaling. Although Activin-A evokes enhanced chondrogenesis in vitro and heterotopic ossification (HO) in vivo, the underlying mechanisms have yet to be revealed...
September 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28755278/endothelial-bmp4-regulates-leukocyte-diapedesis-and-promotes-inflammation
#18
Thomas Helbing, Linus Arnold, Gwendoline Wiltgen, Eva Hirschbihl, Valentin Gabelmann, Alexandra Hornstein, Jennifer S Esser, Philipp Diehl, Sebastian Grundmann, Hans-Jörg Busch, Katrin Fink, Christoph Bode, Martin Moser
Leukocyte recruitment is a fundamental event in the response of the innate immune system to injury. This process is promoted in part by the opening of endothelial cell adherens junctions that allows leukocyte extravasation through gaps between adjacent endothelial cells. VE-cadherin is a key component of endothelial cell adherens junctions and a negative regulator of leukocyte emigration. Accumulating evidence implicates bone morphogenetic protein (BMP) 4 as a critical regulator in vascular biology, but its role in leukocyte extravasation in vitro and in vivo has not been investigated so far...
July 28, 2017: Inflammation
https://www.readbyqxmd.com/read/28744638/counts-of-msc-in-the-bone-marrow-of-young-and-old-cba-mice-after-a-single-exposure-to-osteogenic-stimuli-curettage-bmp-2-injection-or-antigens-s-typhimurium-antigenic-complex-and-in-heterotopic-bone-marrow-transplants
#19
Yu F Gorskaya, A Sh Dzharullaeva, D S Onsina, V G Nesterenko
The efficiency of cloning and the content of multipotent stromal cells (MSC) in the femoral bone marrow of intact CBA mice was 1.5 times less in old mice (24-36 months) than in young ones (2-3 months). The concentration of osteogenic MSC was higher in old vs. young mice (42±3 vs. 22±2%, respectively). Changes in the total counts of MSC and concentrations of osteogenic MSC in response to osteogenic (curettage, BMP-2) and immunogenic stimuli (S. typhimurium antigenic complex) were similar in young and old mice in comparison with intact controls of respective age...
July 25, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28736908/bmp-7-ameliorates-cobalt-alloy-particle-induced-inflammation-by-suppressing-th17-responses
#20
Fengrong Chen, Ruisong Chen, Haoyuan Liu, Rupeng Sun, Jianming Huang, Zheyuan Huang, Guojian Jian
Metal wear debris has been shown to activate an aseptic osteolytic process that causes failure in total joint arthroplasty (TJA). This osteolysis is characterized by a proinflammatory, self-propagating immune response involving primarily macrophages, dendritic cells, and activated osteoclasts, as well as T cells and B cells. The human bone morphogenic protein (BMP)-7, on the other hand, was shown to promote osteoblast survival, and reversed the downregulation of anabolic Smad proteins and Runx2 following cobalt injury...
July 24, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
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