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https://www.readbyqxmd.com/read/29201897/combined-treatment-with-an-anticoagulant-and-a-vasodilator-prevents-steroid-associated-osteonecrosis-of-rabbit-femoral-heads-by-improving-hypercoagulability
#1
Fang Cao, Ge Liu, Wei Wang, Benjie Wang, Xiaowei Wei, Faqiang Lu, Fan Yang, Kai Kang, Yongxuan Wang, Jiahui Yang, Kairong Qin, Dewei Zhao
Steroid-associated osteonecrosis of the femoral head remains a challenging problem in orthopedics worldwide. One pathomechanism is ischemia of the femoral head, as a result of thrombus formation and vasoconstriction. The present study investigates the effects of combination prevention with enoxaparin and EGb 761 on steroid-associated ONFH in rabbits. Rabbits were randomly divided into 5 groups (control group, model group, enoxaparin group, ginkgo group, and combination group). With the exception of the control group, the groups of rabbits were modeled with lipopolysaccharide and methylprednisolone acetate...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29154973/inhibition-of-bmp-signaling-overcomes-acquired-resistance-to-cetuximab-in-oral-squamous-cell-carcinomas
#2
Jinlong Yin, Ji-Eun Jung, Sun Il Choi, Sung Soo Kim, Young Taek Oh, Tae-Hoon Kim, Eunji Choi, Sun Joo Lee, Hana Kim, Eun Ok Kim, Yu Sun Lee, Hee Jin Chang, Joo Yong Park, Yeejeong Kim, Tak Yun, Kyun Heo, Youn-Jae Kim, Hyunggee Kim, Yun-Hee Kim, Jong Bae Park, Sung Weon Choi
Despite expressing high levels of the epidermal growth factor receptor (EGFR), a majority of oral squamous cell carcinoma (OSCC) patients show limited response to cetuximab and ultimately develop drug resistance. However, mechanism underlying cetuximab resistance in OSCC is not clearly understood. Here, using a mouse orthotopic xenograft model of OSCC, we show that BMP7-p-Smad1/5/8 signaling contributes to cetuximab resistance. Tumor cells isolated from the recurrent cetuximab-resistant xenograft models exhibited low EGFR expression but extremely high levels of phosphorylated Smad-1, -5, and -8 (p-Smad1/5/8)...
November 15, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29097030/benzofuran-dihydropyridine-hybrids-a-new-class-of-potential-bone-anabolic-agents
#3
Ram K Modukuri, Dharmendra Choudhary, Sampa Gupta, K Bhaskara Rao, Sulekha Adhikary, Tanuj Sharma, Mohammad Imran Siddiqi, Ritu Trivedi, Koneni V Sashidhara
A series of novel benzofuran-dihydropyridine hybrids were designed by molecular hybridization approach and evaluated for bone anabolic activities. Among the screened library, ethyl 4-(7-(sec-butyl)-2-(4-methylbenzoyl)benzofuran-5-yl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate (compound 21) significantly enhanced the ALP production and mineralized nodule formation, which are primary requisites in the process of in vitro osteogenesis. Oral administration of compound 21 at 10 mg.kg-1 day-1 for two weeks led to restoration of trabecular bone microarchitecture in drill hole fracture model by significantly increasing BV/TV and Tb...
December 15, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29096714/isolation-and-prolonged-expansion-of-oral-mesenchymal-stem-cells-under-clinical-grade-gmp-compliant-conditions-differentially-affects-stemness-properties
#4
Athina Bakopoulou, Danae Apatzidou, Eleni Aggelidou, Evangelia Gousopoulou, Gabriele Leyhausen, Joachim Volk, Aristeidis Kritis, Petros Koidis, Werner Geurtsen
BACKGROUND: Development of clinical-grade cell preparations is central to meeting the regulatory requirements for cellular therapies under good manufacturing practice-compliant (cGMP) conditions. Since addition of animal serum in culture media may compromise safe and efficient expansion of mesenchymal stem cells (MSCs) for clinical use, this study aimed to investigate the potential of two serum/xeno-free, cGMP culture systems to maintain long-term "stemness" of oral MSCs (dental pulp stem cells (DPSCs) and alveolar bone marrow MSCs (aBMMSCs)), compared to conventional serum-based expansion...
November 2, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29057714/dose-dependent-effect-of-radiation-on-resorbable-blast-material-titanium-implants-an-experimental-study-in-rabbits
#5
Gülnihal Emrem Doğan, Zekai Halici, Emre Karakus, Burak Erdemci, Akgün Alsaran, Irfan Cinar
BACKGROUND: Radiotherapy is a commonly used treatment modality in head and neck cancer; however, it also negatively affects healthy structures. Direct damage to oral soft and hard tissue frequently occurs with radiotherapy. In this study, we aimed to evaluate the effect of radiotherapy on bone surrounding titanium dental implants via biomechanical and molecular methods. MATERIALS AND METHODS: Fifty-four implants were inserted in the left tibiae of 18 adult male New Zealand rabbits (3 implants in each rabbit)...
October 23, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28964656/-the-dorsoventral-inversion-an-attempt-of-synthesis
#6
REVIEW
S Louryan, N Vanmuylder
The invertebrates, with known exception of echinoderms, are hyponeurian and protostomian. By contrast, echinoderms, chordates and vertebrate are epineurian and deuterostomian. Convinced of the uniqueness origin of all species, Etienne Geoffroy Saint Hilaire (1772-1844), had postulated a complete inversion of body plan to explain this difference. He had to face up to the hostility of the fixist Georges Cuvier (1763-1832). Much later, famous embryologists such as Maurice Caullery still believed that this idea was erroneous...
September 27, 2017: Morphologie: Bulletin de L'Association des Anatomistes
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
#7
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...
November 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28835018/effect-of-fgf-2-tgf-%C3%AE-1-and-bmps-on-teno-ligamentogenesis-and-osteo-cementogenesis-of-human-periodontal-ligament-stem-cells
#8
Sun-Yi Hyun, Ji-Hye Lee, Kyung-Jung Kang, Young-Joo Jang
The periodontal ligament (PDL) is the connective tissue between tooth root and alveolar bone containing mesenchymal stem cells (MSC). It has been suggested that human periodontal ligament stem cells (hPDLSCs) differentiate into osteo/cementoblast and ligament progenitor cells. The periodontitis is a representative oral disease where the PDL tissue is collapsed, and regeneration of this tissue is important in periodontitis therapy. Fibroblast growth factor-2 (FGF-2) stimulates proliferation and differentiation of fibroblastic MSCs into various cell lineages...
August 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28831098/rna-seq-analysis-on-chicken-taste-sensory-organs-an-ideal-system-to-study-organogenesis
#9
Xiaogang Cui, Brett Marshall, Ning Shi, Shi-You Chen, Romdhane Rekaya, Hong-Xiang Liu
RNA-Seq is a powerful tool in transcriptomic profiling of cells and tissues. We recently identified many more taste buds than previously appreciated in chickens using molecular markers to stain oral epithelial sheets of the palate, base of oral cavity, and posterior tongue. In this study, RNA-Seq was performed to understand the transcriptomic architecture of chicken gustatory tissues. Interestingly, taste sensation related genes and many more differentially expressed genes (DEGs) were found between the epithelium and mesenchyme in the base of oral cavity as compared to the palate and posterior tongue...
August 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28812969/functional-expression-of-bmp7-receptors-in-oral-epithelial-cells-interleukin-17f-production-in-response-to-bmp7
#10
Kensuke Nishio, Yasumasa Ozawa, Hisanori Ito, Takashi Kifune, Tatsuya Narita, Toshimitsu Iinuma, Nobuhito Gionhaku, Masatake Asano
BACKGROUND: Bone morphogenetic proteins (BMPs) are members of the transforming growth factor-β (TGF-β) superfamily. Recently, BMP7 has been demonstrated to be produced by salivary glands and contribute to embryonic branching in mice. The BMP7 in saliva is thought to be delivered to the oral cavity and is expected to contact with stratified squamous epithelial cells which line the surface of oral mucosa. In this study, we attempted to investigate the effects of BMP7 on oral epithelial cells...
October 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28804438/green-tea-extract-induces-genes-related-to-browning-of-white-adipose-tissue-and-limits-weight-gain-in-high-energy-diet-fed-rat
#11
Li-Han Chen, Yi-Wen Chien, Chung-Tiang Liang, Ching-Hung Chan, Meng-Han Fan, Hui-Yu Huang
Background: A wealth of research has reported on the anti-obesity effects of green tea extract (GTE). Although browning of white adipose tissue (WAT) has been reported to attenuate obesity, no study has disclosed the effects of GTE on browning in Sprague Dawley rats. Objectives: The aims of the study were to investigate the effects of GTE on anti-obesity and browning, and their underlying mechanisms. Methods: Four groups of rats (n=10/group) were used including a normal diet with vehicle treatment, and a high-energy diet (HED) with vehicle or GTE by oral gavage at 77...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28760336/dietary-magnesium-supplementation-prevents%C3%A2-and%C3%A2-reverses-vascular-and-soft-tissue%C3%A2-calcifications-in-uremic-rats
#12
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...
November 2017: Kidney International
https://www.readbyqxmd.com/read/28652368/antagonistic-bmp-cwnt-signaling-in-the-cnidarian-nematostella-vectensis-reveals-insight-into-the-evolution-of-mesoderm
#13
Naveen Wijesena, David K Simmons, Mark Q Martindale
Gastrulation was arguably the key evolutionary innovation that enabled metazoan diversification, leading to the formation of distinct germ layers and specialized tissues. Differential gene expression specifying cell fate is governed by the inputs of intracellular and/or extracellular signals. Beta-catenin/Tcf and the TGF-beta bone morphogenetic protein (BMP) provide critical molecular signaling inputs during germ layer specification in bilaterian metazoans, but there has been no direct experimental evidence for a specific role for BMP signaling during endomesoderm specification in the early branching metazoan Nematostella vectensis (an anthozoan cnidarian)...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28560004/impact-of-impaired-cardiac-function-on-the-progression-of-chronic-kidney-disease-role-of-pharmacomodulation-of-valsartan
#14
Chih-Chao Yang, Hon-Kan Yip, Kuan-Hung Chen, Cheuk-Kwan Sun, Yen-Ta Chen, Han-Tan Chai, Pei-Hsun Sung, Hsin-Ju Chiang, Sheung-Fat Ko, Sheng-Ying Chung, Chih-Hung Chen, Kun-Chen Lin, Pao-Yuan Lin, Jiunn-Jye Sheu
Although chronic kidney disease (CKD) is known to aggravate cardiovascular disease in the setting of cardiorenal syndrome (CRS), the impact of impaired cardiac function on the progression of CKD has seldom been reported. This study tested the impact of acute myocardial infarction on a rodent CKD model and the therapeutic effect of valsartan in this setting. Adult male Sprague-Dawley rats (n = 50) equally divided into group 1 (sham control), group 2 (CKD induced by 5/6 nephrectomy), group 3 (AMI by ligation of left coronary artery), group 4 (CKD+AMI), group 5 (CKD+AMI+valsartan, orally 10 mg/kg/day)...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28491933/wnt-and-bmp-signaling-crosstalk-in-regulating-dental-stem-cells-implications-in-dental-tissue-engineering
#15
Fugui Zhang, Jinglin Song, Hongmei Zhang, Enyi Huang, Dongzhe Song, Viktor Tollemar, Jing Wang, Jinhua Wang, Maryam Mohammed, Qiang Wei, Jiaming Fan, Junyi Liao, Yulong Zou, Feng Liu, Xue Hu, Xiangyang Qu, Liqun Chen, Xinyi Yu, Hue H Luu, Michael J Lee, Tong-Chuan He, Ping Ji
Tooth is a complex hard tissue organ and consists of multiple cell types that are regulated by important signaling pathways such as Wnt and BMP signaling. Serious injuries and/or loss of tooth or periodontal tissues may significantly impact aesthetic appearance, essential oral functions and the quality of life. Regenerative dentistry holds great promise in treating oral/dental disorders. The past decade has witnessed a rapid expansion of our understanding of the biological features of dental stem cells, along with the signaling mechanisms governing stem cell self-renewal and differentiation...
December 2016: Genes & Diseases
https://www.readbyqxmd.com/read/28437133/the-impact-of-the-centrifuge-characteristics-and-centrifugation-protocols-on-the-cells-growth-factors-and-fibrin-architecture-of-a-leukocyte-and-platelet-rich-fibrin-l-prf-clot-and-membrane
#16
David M Dohan Ehrenfest, Nelson R Pinto, Andrea Pereda, Paula Jiménez, Marco Del Corso, Byung-Soo Kang, Mauricio Nally, Nicole Lanata, Hom-Lay Wang, Marc Quirynen
L-PRF (leukocyte- and platelet-rich fibrin) is one of the four families of platelet concentrates for surgical use and is widely used in oral and maxillofacial regenerative therapies. The first objective of this article was to evaluate the mechanical vibrations appearing during centrifugation in four models of commercially available table-top centrifuges used to produce L-PRF and the impact of the centrifuge characteristics on the cell and fibrin architecture of a L-PRF clot and membrane. The second objective of this article was to evaluate how changing some parameters of the L-PRF protocol may influence its biological signature, independently from the characteristics of the centrifuge...
April 24, 2017: Platelets
https://www.readbyqxmd.com/read/28350044/bone-morphogenetic-protein-2-enhances-the-osteogenic-differentiation-capacity-of-mesenchymal-stromal-cells-derived-from-human-bone-marrow-and-umbilical-cord
#17
Kulisara Marupanthorn, Chairat Tantrawatpan, Pakpoom Kheolamai, Duangrat Tantikanlayaporn, Sirikul Manochantr
Mesenchymal stromal cells (MSCs) are multipotent cells that can give rise to different cell types of the mesodermal lineages. They are powerful sources for cell therapy in regenerative medicine as they can be isolated from various tissues, and can be expanded and induced to differentiate into multiple lineages. Recently, the umbilical cord has been suggested as an alternative source of MSCs. Although MSCs derived from the umbilical cord can be induced to differentiate into osteoblasts with a phenotypic similarity to that of bone marrow-derived MSCs, the differentiation ability is not consistent...
February 1, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28288902/3-piperidylethoxypterocarpan-a-potential-bone-anabolic-agent-that-improves-bone-quality-and-restores-trabecular-micro-architecture-in-ovariectomized-osteopenic-rats
#18
Ashutosh Raghuvanshi, Amit Kumar, Abdul M Tyagi, Jyoti Kureel, Pallavi Awasthi, Deepak Purohit, Mohd Nizam Mansoori, Priyanka Shukla, Kamini Srivastava, Abnish K Gautam, Ruchi Saxena, Anila Dwivedi, Divya Singh, Atul Goel
A series of new 6H-benzofuro[3, 2-c]chromenes (BFC, pterocarpans) with structure-activity relationships were investigated for their potential use in osteoporosis treatment. One of the BFCs 3-piperidylethoxypterocarpan 20 promotes osteoblast differentiation and mineralization at a dose as low as 1 pM via activation of ER/P38MAPK/BMP-2 pathway. When evaluated for in-vivo osteogenic activity in female Sprague-Dawley rats, BFC 20 increased bone mineral density and new bone formation, compared with control at 1...
March 10, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28276147/implant-guided-supracrestal-alveolar-bone-growth-using-scaffolds-bmp-2-and-novel-scaffold-retaining-device
#19
Bo Wen, David Shafer, Peter Schleier, David Pendrys, Liisa Kuhn, Martin Freilich
OBJECTIVE: To evaluate the efficacy of various scaffold systems and a Ti scaffold-retaining device with and without non-glycosylated rhBMP-2 (BMP-2) for increasing the vertical alveolar bone growth in the intra-oral mini-pig model. METHODS: Forty-eight Straumann Bone Level implants with hydrophilic (SLActive) surfaces were partially embedded in mandibles of 12 adult mini-pigs with the shoulder of the implant located 3 mm above the bone crest. Twenty-four implants were placed in conjunction with BMP-2 (50 μg) incorporated within resorbable scaffolds...
March 9, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28212283/the-effects-of-tocotrienol-and-lovastatin-co-supplementation-on-bone-dynamic-histomorphometry-and-bone-morphogenetic-protein-2-expression-in-rats-with-estrogen-deficiency
#20
Kok-Yong Chin, Saif Abdul-Majeed, Norazlina Mohamed, Soelaiman Ima-Nirwana
Both tocotrienol and statins are suppressors of the mevalonate pathway. Supplementation of tocotrienol among statin users could potentially protect them against osteoporosis. This study aimed to compare the effects of tocotrienol and lovastatin co-supplementation with individual treatments on bone dynamic histomorphometric indices and bone morphogenetic protein-2 (BMP-2) gene expression in ovariectomized rats. Forty-eight female Sprague-Dawley rats were randomized equally into six groups. The baseline was sacrificed upon receipt...
February 15, 2017: Nutrients
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