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| Registros recuperados: 38 | |
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| Muñoz,L.C.; Cardona.-Ramirez,S.; Silva,R.F.. |
| ABSTRACT Hydroxyapatite (HA) is widely used as a biomaterial for bone repair and metallic prostheses coating. The main limitations of the current commercial synthetic hydroxyapatite compounds include high cost and decreased availability, especially for veterinary medicine purposes. Additionally, it is thought that HA biocompatibility and bioactivity could be enhanced by the addition of metal compounds. The objective of this work was to compare the subcutaneous tissue response of commercial and engineered hydroxyapatite obtained from the bovine femur diaphysis mixed with different concentrations of hexa-hydrated Zinc Nitrate in rabbits. Twenty-Five New Zealand female rabbits were used. Five treatments were done according to HA composition (commercial HA, no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal model; Biocompatibility; Bone; Integration. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601873 |
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| Ferreira,M.P.; Alievi,M.M.; Beck,C.A.C.; Dal-Bó,I.S.; Gonzalez,P.C.; Nóbrega,F.S.; Silva,L.M.; Stédile,R.; Scherer,S.; Rocha,J.P.V.; Silva Filho,A.P.F.; Svierk,B.; Costa,G.. |
| Cats with orthopedic conditions are a prominent part of the clinical work of veterinary. Conditions such as comminuted fractures, bone tumors and non-unions are often difficult to repair and may require the use of bone grafts for treatment. This study evaluated cortical bone allografts preserved in honey, frozen or lyophilized for correcting long bone defects created in the diaphysis of the right femur of domestic cats (n=24). In the control group (n=6), the defect was repaired using autogenous cortical bone graft. In the remaining animals (n=6/group), the defect was repaired with cortical bone allografts preserved in honey, frozen or lyophilized. Success of graft incorporation and length of time for consolidation were assessed through clinical,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Preservation; Bone; Animal; Orthopedic; Traumatology. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000200003 |
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| Spataru,C.; Spataru,M.; Vulpe,V.; Lazar,M.. |
| Comparative research concerning masticatory musculature in squirrel, muskrat and rabbit, take into account the emphasizing and morphofunctional interpretation of the osteomuscular particularities involved in the prehension and mastication processes. The development of the coronoid process on the muskrat and squirrel demonstrates the growing of the force when raising the mandible by increasing the action force attached to the temporal muscle, with insertion on the coronoid process. In comparison with that, in the case of rabbits, both the coronoid process and the temporal muscle are reduced. From a philogenetic point of view, it has been found that the species that have the articular condyle lowered at or under the level of the dental tables (carnivores)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Squirrel; Muskrat; Rabbit; Bone; Muscle; Skeleton. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300021 |
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| BERNAL,FABIÁN; HARTUNG,HANS-PETER; KIESEIER,BERND C. |
| Matrix metalloproteinases (MMPs) comprise a large group of endoproteinases that degrade all protein components of the extracellular matrix. Functionally, MMPs contribute to several different physiological as well as pathological conditions. The number of newly described MMPs has increased in recent years, although current knowledge about their expression pattern in various tissues remains incomplete. Here we analyzed the relative mRNA expression of the most recently described MMPs _ MT5-MMP (MMP-24), MT6-MMP (MMP-25), MMP-27 and epilysin (MMP-28) _ in a broad selection of rat tissues using real time-PCR. MMP-24 mRNA was found to be widely expressed with predominance in the central nervous system. MMP-25 mRNA, in contrast, exhibited peak expression levels... |
| Tipo: Journal article |
Palavras-chave: Bone; CNS; Epilysin; Kidney; MT5-MMP; MT6-MMP; Testis. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200016 |
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| Reis,Emily Correna Carlo; Borges,Andréa Pacheco Batista; Fonseca,Cláudio César; Martinez,Mastoby Miguel Martinez; Eleotério,Renato Barros; Morato,Gláucia Oliveira; Oliveira,Paulo Miranda. |
| In this work, biocompatibility, osteointegration, osteoconductivity, and biodegradation of a hydroxyapatite polyhydroxybutyrate new composite were evaluated. The composite was implanted in rabbits' bone defects and clinical, radiographic, histological, and histomorphometric data of these animals were compared with those of unfilled defects on the days 8th, 45th, and 90th after surgery. No significant differences existed between the groups for the evaluated clinical parameters. Radiographs showed bone-composite direct contact. Bone formed within the defect, interface and inside the composite. Significant differences were found between the bone and connective tissues percentage within the defect at all dates and at the interface on the 45th day, bone tissue... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomaterials; Bone; Biocompatibility; Biodegradation; Hydroxyapatite-polyhydroxybutyrate composite. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400010 |
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| Carmo,Fabiana Bononi; Terreri,Maria Teresa; Succi,Regina Célia de Menezes; Beltrão,Suenia Vasconcelos; Gouvea,Aida de Fátima Tomé Barbosa; Paulino,Erica Regina Cruz; Machado,Daisy Maria. |
| ABSTRACT Background: The increase in life expectancy for patients living with human immunodeficiency virus (HIV) infection has resulted in health complications related to a chronic disease. Objectives: To evaluate the prevalence of bone mineral density (BMD) alterations and vitamin D concentrations in HIV-infected children and adolescents and to verify the variations in those parameters during a 12-month interval. Methods: A prospective cohort study with a dual period of evaluation was conducted in 57 patients perinatally HIV-infected and one patient with sexual abuse in early infancy. Demographic, anthropometric, pubertal stage, viral load, T CD4+ cell count and antiretroviral therapy were evaluated. Biochemical tests and total body (TB) and lumbar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HIV; Antiretroviral; Infant; Diagnosis; Metabolism; Bone. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300270 |
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| Fontes-Pereira,A.; Matusin,D.P.; Rosa,P.; Schanaider,A.; von Krüger,M.A.; Pereira,W.C.A.. |
| A simple experimental protocol applying a quantitative ultrasound (QUS) pulse-echo technique was used to measure the acoustic parameters of healthy femoral diaphyses of Wistar rats in vivo. Five quantitative parameters [apparent integrated backscatter (AIB), frequency slope of apparent backscatter (FSAB), time slope of apparent backscatter (TSAB), integrated reflection coefficient (IRC), and frequency slope of integrated reflection (FSIR)] were calculated using the echoes from cortical and trabecular bone in the femurs of 14 Wistar rats. Signal acquisition was performed three times in each rat, with the ultrasound signal acquired along the femur's central region from three positions 1 mm apart from each other. The parameters estimated for the three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone; Tissue characterization; Quantitative ultrasound; Clinical research protocols; Animal model. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000500403 |
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| Yanagihara,G.R.; Paiva,A.G.; Gasparini,G.A.; Macedo,A.P.; Frighetto,P.D.; Volpon,J.B.; Shimano,A.C.. |
| High-impact exercise has been considered an important method for treating bone loss in osteopenic experimental models. In this study, we investigated the effects of osteopenia caused by inactivity in femora and tibiae of rats subjected to jump training using the rat tail suspension model. Eight-week-old female Wistar rats were divided into five groups (n=10 each group): jump training for 2 weeks before suspension and training during 3 weeks of suspension; jump training for 2 weeks before suspension; jump training only during suspension; suspension without any training; and a control group. The exercise protocol consisted of 20 jumps/day, 5 days/week, with a jump height of 40 cm. The bone mineral density of the femora and tibiae was measured by double... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone; Mechanical properties; Bone mineral density; Scanning electron microscopy; Jump; Rats. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300605 |
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| Yan,Jian; Jiao,Yan; Li,Xinmin; Jiao,Feng; Beamer,Wesley G.; Rosen,Cliff J.; Gu,Weikuan. |
| Humans and guinea pigs are species which are unable to synthesize ascorbic acid (vitamin C) because, unlike rodents, they lack the enzyme L-gulonolactone oxidase (Gulo). Although the phenotype of lacking vitamin C in humans, named scurvy, has long been well known, information on the impact of lacking Gulo on the gene expression profiles of different tissues is still missing. This knowledge could improve our understanding of molecular pathways in which Gulo may be involved. Recently, we discovered a deletion that includes all 12 exons in the gene for Gulo in the sfx mouse, characterized by spontaneous bone fractures. We report here the initial analysis of the impact of the Gulo gene deletion on the murine gene expression profiles in the liver, femur and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spontaneous fracture; Bone; Gene expression; L-gulonolactone oxidase; Vitamin C. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300004 |
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| Igondjo Tchen Changotade, S; Korb, G; Bassil, J; Barroukh, B; Willig, C; Colliec-jouault, Sylvia; Durand, Patrick; Godeau, G; Senni, K. |
| In this work we firstly tested the influence of low molecular weight fucoidan extracted from pheophicae cell wall on bidimensional cultured normal human osteoblasts behaviours. Secondly impregnation procedure with LMW fucoidan of bone biomaterial (Lubboc®) we explored in this bone extracellular matrix context its capabilities to support human osteoblastic behaviour in 3D culture. In bidimensionnal cultures we evidenced that: LMW fucoidan promotes human osteoblast proliferation, collagen type I expression and favours precocious alkaline phosphatase activity. Furthermore with LMW fucoidan von Kossa's staining was positive at 30 days and only positive at 45 days in absence of LMW fucoidan. In our three dimensional culture models with the biomaterial... |
| Tipo: Text |
Palavras-chave: Heparan mimetics; Biomaterial; Bone; Osteoblast; Fucoidan. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2695.pdf |
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| Zeppilli, Daniela; Vanreusel, Ann; Pradillon, Florence; Fuchs, Sandra; Mandon, Perrine; James, Tristan; Sarrazin, Jozee. |
| Despite the fragmented nature of hydrothermal vent (HV) fields, nascent vent sites are rapidly colonized by a pool of regional species. While succession of large animals at vents is relatively well established, we lack information on the associated meiofauna, in particular, on nematodes. The aim of the present study is to investigate the process of colonisation after 9 months of organic (wood and bone) and inorganic (slate) substrata by nematode assemblages deployed at the Eiffel Tower hydrothermal edifice on the Lucky Strike vent field on the Mid-Atlantic Ridge (MAR), at varying distances from visible hydrothermal activity. Abundance, biomass and diversity of colonising nematodes were compared with the results from an earlier similar two-year experiment.... |
| Tipo: Text |
Palavras-chave: Nematodes; Colonization substrata; Wood; Bone; Slate; Mid-Atlantic Ridge; Hydrothermal vents. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00278/38939/37520.pdf |
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| Lok,Sefa. |
| The purpose of this research is to investigate the morphometric effects of short term usage of testosterone enanthate among the anabolic androgenic steroids used as doping by athletes on humerus bones of male rats. 30 rats (35 days) were utilized in this research. The rats were divided into three equal groups. For the experimental group (n= 10), testosterone enanthate at 10 mg/kg dose in 100 µl peanut oil diluents, for the peanut oil group (n= 10), peanut oil of testosterone enanthate' diluent (100 µl) was executed intraperitoneally 5 days in a week for 3 weeks. The control group (n= 10) was nourished without any practice for 3 weeks. All rats were euthanized end of the research. Humerus bones were exposed by the dissection of rats' front extremite bones... |
| Tipo: Journal article |
Palavras-chave: Sport; Doping; Testosterone enanthate; Bone; Humerus; Morphometry. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000400001 |
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| Watanabe,Plauto Christopher Aranha; Issa,João Paulo Mardegan; Oliveira,Tatiane Martín de; Monteiro,Solange Aparecida Caldeira; Iyomasa,Mamie Mizusaki; Regalo,Simone Cecilio Hallak; Siéssere,Selma. |
| The aim of this study was to correlate the morphodigital characteristics of the trabecular mandibular bone, in this way, it is possible to observe osteoporosis clue in patients of both sex, using panoramic radiograph for analysis. The results of this study showed statistical difference between men and women considering the bone trabecular measures (p<0.05), but it was not found statistical difference between the sides in each analyzed group (p>0.05). Male group presented a more strongly trabecular and complex bone than the female group, this finding is important index to osteoporotic risk, being possible to affirm that the male bone is less probable to suffer a osteoporotic fracture |
| Tipo: Journal article |
Palavras-chave: Mandible; Bone; Digital image; Radiograph. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400031 |
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| Morales,Juan-Pablo; Roa H,Ignacio; Zavando,Daniela; Suazo Galdames,Iván. |
| In situations where the skeletal remains found are too fragmented, it is necessary to assess the human origin of such remains; for this purpose, various parameters are used, both anatomical and histological. The objective of the present study is to evaluate the various histomorphometric parameters to differentiate human from non-human bones, to further construct discriminatory functions that allow interspecies classification. Tibia bones sections from human, bovine, pig, hen, cat, and dog species were used, processed through conventional histological techniques and observed under the microscope with a 40x magnification, analyzing the Haversian Canal Density parameters by mm2, Diameter of the Haversian Canal and the Diameter of the Haversian System which... |
| Tipo: Journal article |
Palavras-chave: Bone; Forensic analysis; Determination of species; Osteon compact bone; Haversian canal. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300044 |
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| Registros recuperados: 38 | |
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