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Study regarding its use in the treatment of human OA for

2018-02-09T19:44:34Z

Key07may:

Partial medial meniscectomy in rabbits results in mild to moderate changes in the joint, resembling those in [http://sciencecasenet.org/members/jury44pen/activity/587369/ Ing nPower as predictor with either nAchievement or nAffiliation once again revealed] humans, thus it has been extensively used for testing potential chondroprotective agents [34]. Although normally when the cartilage structure was quantified using micro-CT, the process involved complex staining techniques with radiopaque agents [38?0], in the present study the scan conditions have been adjusted to achieve a correct cartilage visualisation without contrast agents and it was enough to be able to quantify its morphology. Our results revealed the potential anti-inflammatory effects of diacerein on osteoarthritis in two different ways: an improvement in the synovial membrane and a reduction in the thickness of the.Study regarding its use in the treatment of human OA for some time now. Animal models have been widely used to study the efficacy of therapies in order to improve, fight or prevent OA. Surgically-induced OA models, resulting in joint instability, produce a gradual progression of the joint degeneration and mimic the pathogenesis and pathology of the human traumatic OA [30, 31]. Since the first model carried out by Paatsama (1952) [32], many studies havesurgically induced OA using meniscectomy and/or transection of the collateral and cruciate ligaments in different animal species [33]. Partial medial meniscectomy in rabbits results in mild to moderate changes in the joint, resembling those in humans, thus it has been extensively used for testing potential chondroprotective agents [34]. Our animal model was a combination of meniscectomy and ligament transection to avoid the great capacity of rabbits to heal the transected meniscus with fibrous tissue and, similarly to the results obtained by other authors, the results in the present study have shown that this model produced degenerative changes with respect to the healthy contralateral joint [30]. Although the animals were sacrificed at 11 weeks post-surgery, OA seemed to have begun developing, as proven by the swelling of the cartilage. The increase in volume and thickness of cartilage of the [https://dx.doi.org/10.1371/journal.pone.0158910 title= journal.pone.0158910] OA samples is due to a swelling phenomenon characteristic to the early stages of the disease. Several studies on animals of early OAFigure 5 Micro-CT 3D models of a representative sample of each experimental group. Cartilage swelling characteristic of the first stages of OA can be clearly appreciated in OA samples, whereas diacerein-treated samples recover normal cartilage morphology like CTRLPermuy et al. BMC Veterinary Research (2015) 11:Page 9 ofwith magnetic resonance imaging and histomorphometry identified an initial phase of cartilage hypertrophy prior to its degeneration and loss [35, 36]. The explanation has not been found yet, and it is not known whether it is the tissue expression to an inflammatory and repair phenomenon or if it represents a permanent damage of the joint tissue. Special attention should be paid to the methodology used in this study. Samples of subchondral bone and articular cartilage were analysed using different quantitative and qualitative microscopic methods and micro-CT. Histologic assessment of OA is currently considered as the gold-standard for determining the presence, extent and severity of the disease using Mankin [37] or modified Mankin scoring systems, [https://dx.doi.org/10.3389/fnhum.2013.00596 title= fnhum.2013.00596] but recently the histomorphometry using computer analysis systems [24] has been introduced in OA studies with a greater degree of objectivity and reproducibility compared to previous qualitative studies.

Study regarding its use in the treatment of human OA for

2018-02-09T13:52:15Z

Key07may:

Although normally when the cartilage structure was quantified using micro-CT, the [http://brain-tech-society.brain-mind-magazine.org/members/health54betty/activity/1464979/ Rs state they have no conflict of interest. Authors' contributions EC] process involved complex staining techniques with radiopaque agents [38?0], in the present study the scan conditions have been adjusted to achieve a correct cartilage visualisation without contrast agents and it was enough to be able to quantify its morphology. Animal models have been widely used to study the efficacy of therapies in order to improve, fight or prevent OA. Surgically-induced OA models, resulting in joint instability, produce a gradual progression of the joint degeneration and mimic the pathogenesis and pathology of the human traumatic OA [30, 31]. Since the first model carried out by Paatsama (1952) [32], many studies havesurgically induced OA using meniscectomy and/or transection of the collateral and cruciate ligaments in different animal species [33]. Partial medial meniscectomy in rabbits results in mild to moderate changes in the joint, resembling those in humans, thus it has been extensively used for testing potential chondroprotective agents [34]. Our animal model was a combination of meniscectomy and ligament transection to avoid the great capacity of rabbits to heal the transected meniscus with fibrous tissue and, similarly to the results obtained by other authors, the results in the present study have shown that this model produced degenerative changes with respect to the healthy contralateral joint [30]. Although the animals were sacrificed at 11 weeks post-surgery, OA seemed to have begun developing, as proven by the swelling of the cartilage. The increase in volume and thickness of cartilage of the [https://dx.doi.org/10.1371/journal.pone.0158910 title= journal.pone.0158910] OA samples is due to a swelling phenomenon characteristic to the early stages of the disease. Several studies on animals of early OAFigure 5 Micro-CT 3D models of a representative sample of each experimental group. Cartilage swelling characteristic of the first stages of OA can be clearly appreciated in OA samples, whereas diacerein-treated samples recover normal cartilage morphology like CTRLPermuy et al. BMC Veterinary Research (2015) 11:Page 9 ofwith magnetic resonance imaging and histomorphometry identified an initial phase of cartilage hypertrophy prior to its degeneration and loss [35, 36]. The explanation has not been found yet, and it is not known whether it is the tissue expression to an inflammatory and repair phenomenon or if it represents a permanent damage of the joint tissue. Special attention should be paid to the methodology used in this study. Samples of subchondral bone and articular cartilage were analysed using different quantitative and qualitative microscopic methods and micro-CT. Histologic assessment of OA is currently considered as the gold-standard for determining the presence, extent and severity of the disease using Mankin [37] or modified Mankin scoring systems, [https://dx.doi.org/10.3389/fnhum.2013.00596 title= fnhum.2013.00596] but recently the histomorphometry using computer analysis systems [24] has been introduced in OA studies with a greater degree of objectivity and reproducibility compared to previous qualitative studies. Micro-CT has become in recent years the goldstandard for three-dimensional analysis of bone microstructure and its objectivity and reproducibility was comparable to histomorphometry. Although normally when the cartilage structure was quantified using micro-CT, the process involved complex staining techniques with radiopaque agents [38?0], in the present study the scan conditions have been adjusted to achieve a correct cartilage visualisation without contrast agents and it was enough to be able to quantify its morphology.

E efficacy of diacerein to slow the progression of the disease

2018-02-09T07:04:32Z

Key07may:

Authors' contributions DG, JRC, FM and AGC participated in the conception and design of the study. The animal model and the histological analyses were performed by MP, ML, FM and AGC; micro-CT assessments were conducted by DG and JRC. All authors have [https://dx.doi.org/10.1089/jir.2011.0103 title= jir.2011.0103] collaborated on data analysis, interpretation of results, drafting and revision of article for final approval. Acknowledgements The authors gratefully acknowledge the assistance of Natalia Mi , Mariano L ez and Oscar Varela of the Department of Veterinary Clinical Sciences, University of [http://www.medchemexpress.com/Stattic.html Stattic chemical information] Santiago de Compostela, for their contribution in surgery procedures and drug administration, of the staff at the Animal Research Facility, University [https://dx.doi.org/10.3389/fnhum.2013.00596 title= fnhum.2013.00596] of Santiago de Compostela, for taking care of the animals and Bioiberica (Barcelona, Spain), which provided drugs for the study. The authors are grateful to the Directorate-General of Research, Development and Innovation, Ministry of Economy and Industry, Xunta de Galicia for [http://www.medchemexpress.com/epz004777.html EPZ004777 biological activity] funding this work through research project 09CSA008E, co-financed by the European Regional and Social Funds (FEDER and FSE) and by a grant from the Fundaci Salud 2000. The funders have no role in the study design, data analysis and interpretation, writing of the manuscript or decision to submit it for publication. Author details 1 Veterinary Clinical Sciences, University of Santiago de Compostela (USC), Campus Universitario, s/n, 27002, Lugo, Spain. 2Trabeculae S.L., Parque Tecnol ico de Galicia, 32900 San Cibrao das Vi s, Ourense, Spain. 3 Orthopedic Surgery Service, USC University Hospital Complex, Traves de Choupana, s/n,.E efficacy of diacerein to slow the progression of the disease in an early model of OA, as shown in previous studies in vitro [45], in different animal models [12, 42, 45, 46] and in clinical trials [7, 16, 47]; although the comparison of different studies is difficult because of their high degree of heterogeneity (different models conducted in different animal species and humans, different time schedule and others). ToPermuy et al. BMC Veterinary Research (2015) 11:Page 10 ofcomplete this study and correctly evaluate the obtained results, it may be necessary to evaluate the effects of diacerein treatment in the same animal model with a more advanced OA.Conclusions Oral diacerein as OA treatment has been able to reduce cartilage swelling, surface alterations and the inflammation of the synovial membrane in the early stages of OA in a rabbit surgical model. Regarding the subchondral bone, diacerein has shown in healthy bone, but not in the osteoarthritic one, the ability to increase bone volume and mineral density, indicating a surprising effect of this drug on the bone structure, whose results have not been published up to now. The study also demonstrates the validity of the animal model, and that micro-CT could be a valid technique to detect morphological changes in articular cartilage with comparable results to histomorphometry. Further studies on long-term OA animal models and well-conducted clinical trials may be required to confirm or exclude the efficacy of diacerein in the treatment of knee OA.Abbreviations OA: Osteoarthritis; SYSADOAs: symptomatic slow-acting drugs for osteoarthritis; NSAIDS: non-steroidal anti-inflammatory drugs; ARRIVE: Animal Research: Reporting in vivo experiments; ACLT: anterior cruciate ligament transection; SO: safranin-O staining; H-E: Hematoxylin-eosin. Competing interests The authors declare that they have no competing interests.

E efficacy of diacerein to slow the progression of the disease

2018-02-06T07:19:38Z

Key07may:

BMC Veterinary Research (2015) 11:Page 10 ofcomplete this study and correctly evaluate the obtained results, it may be necessary to evaluate the effects of diacerein treatment in the same animal model with a more advanced OA.Conclusions Oral diacerein as OA treatment has been able to reduce cartilage swelling, surface alterations and the inflammation of the synovial membrane in the early stages of OA in a rabbit surgical model. Regarding the subchondral bone, diacerein has shown in healthy bone, but not in the osteoarthritic one, the ability to increase bone volume and mineral density, indicating a [http://www.nanoplay.com/blog/49996/s-of-2-mercaptoethanol-2-me-over-dye-all-incubations-were-carried-out/ S of 2-mercaptoethanol (2-ME) more than dye. All incubations had been carried out] surprising effect of this drug on the bone structure, whose results have not been published up to now. The study also demonstrates the validity of the animal model, and that micro-CT could be a valid technique to detect morphological changes in articular cartilage with comparable results to histomorphometry. Further studies on long-term OA animal models and well-conducted clinical trials may be required to confirm or exclude the efficacy of diacerein in the treatment of knee OA.Abbreviations OA: Osteoarthritis; SYSADOAs: symptomatic slow-acting drugs for osteoarthritis; NSAIDS: non-steroidal anti-inflammatory drugs; ARRIVE: Animal Research: Reporting in vivo experiments; ACLT: anterior cruciate ligament transection; SO: safranin-O staining; H-E: Hematoxylin-eosin. Competing interests The authors declare that they have no competing interests. Authors' contributions DG, JRC, FM and AGC participated in the conception and design of the study. The animal model and the histological analyses were performed by MP, ML, FM and AGC; micro-CT assessments were conducted by DG and JRC. All authors have [https://dx.doi.org/10.1089/jir.2011.0103 title= jir.2011.0103] collaborated on data analysis, interpretation of results, drafting and revision of article for final approval. Acknowledgements The authors gratefully acknowledge the assistance of Natalia Mi , Mariano L ez and Oscar Varela of the Department of Veterinary Clinical Sciences, [http://www.share-dollar.com/comment/html/?52576.html Study assumed the analysis of gene expression in two study groups] University of Santiago de Compostela, for their contribution in surgery procedures and drug administration, of the staff at the Animal Research Facility, University [https://dx.doi.org/10.3389/fnhum.2013.00596 title= fnhum.2013.00596] of Santiago de Compostela, for taking care of the animals and Bioiberica (Barcelona, Spain), which provided drugs for the study. The authors are grateful to the Directorate-General of Research, Development and Innovation, Ministry of Economy and Industry, Xunta de Galicia for funding this work through research project 09CSA008E, co-financed by the European Regional and Social Funds (FEDER and FSE) and by a grant from the Fundaci Salud 2000. The funders have no role in the study design, data analysis and interpretation, writing of the manuscript or decision to submit it for publication. Author details 1 Veterinary Clinical Sciences, University of Santiago de Compostela (USC), Campus Universitario, s/n, 27002, Lugo, Spain. 2Trabeculae S.L., Parque Tecnol ico de Galicia, 32900 San Cibrao das Vi s, Ourense, Spain. 3 Orthopedic Surgery Service, USC University Hospital Complex, Traves de Choupana, s/n,.E efficacy of diacerein to slow the progression of the disease in an early model of OA, as shown in previous studies in vitro [45], in different animal models [12, 42, 45, 46] and in clinical trials [7, 16, 47]; although the comparison of different studies is difficult because of their high degree of heterogeneity (different models conducted in different animal species and humans, different time schedule and others).

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug

2018-02-05T06:35:53Z

Key07may:

A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these [http://freelanceeconomist.com/members/lift55flax/activity/852295/ CRs in controls vs. SZ in block 9 of conditioning. UR ?No] results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant.Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for cartilage protection, but also for synovitis and reduction in bone erosion in a mice model of inflammatory arthritis [41]. The mechanisms of the antiinflammatory effect of diacerein have not yet been completely clarified but Tamura et al. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43]. The histologic evaluation of the synovial membrane in the OA group revealed moderate to severe inflammatory changes with thickening of the lining cell layer, hyperplasia and infiltration with inflammatory cells. In the diacerein-treated group (OA + DC) these changes are milder than in the OA group, although, as in a canine cruciate-deficiency model [12] the results are not statistically significant, as the animals of this OA + DC group obtained values halfway between healthy and osteoarthritic ones. The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups (although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the latter also with the CTRL group. There were no differences between OA and OA + DC, but nor between OA + DC and CTRL + DC and the tendency of values was to approximate joint values to normal. Regarding FI -an important parameter because it makes a clear distinction between ill and healthy animals [44]- there were no statistical differences between groups, but there [https://dx.doi.org/10.3389/fnins.2013.00251 title= fnins.2013.00251] is a tendency of approximating values of OA + DC to those of controls.Non-calcified cartilage.Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for cartilage protection, but also for synovitis and reduction in bone erosion in a mice model of inflammatory arthritis [41].

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug

2018-02-05T06:35:16Z

Key07may:

The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups ([http://campuscrimes.tv/members/hell0cast/activity/677355/ E trachea is a lot shorter, leaving tiny margin for error. Offered] although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant.Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for cartilage protection, but also for synovitis and reduction in bone erosion in a mice model of inflammatory arthritis [41]. The mechanisms of the antiinflammatory effect of diacerein have not yet been completely clarified but Tamura et al. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43]. The histologic evaluation of the synovial membrane in the OA group revealed moderate to severe inflammatory changes with thickening of the lining cell layer, hyperplasia and infiltration with inflammatory cells. In the diacerein-treated group (OA + DC) these changes are milder than in the OA group, although, as in a canine cruciate-deficiency model [12] the results are not statistically significant, as the animals of this OA + DC group obtained values halfway between healthy and osteoarthritic ones. The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups (although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the latter also with the CTRL group. There were no differences between OA and OA + DC, but nor between OA + DC and CTRL + DC and the tendency of values was to approximate joint values to normal. Regarding FI -an important parameter because it makes a clear distinction between ill and healthy animals [44]- there were no statistical differences between groups, but there [https://dx.doi.org/10.3389/fnins.2013.00251 title= fnins.2013.00251] is a tendency of approximating values of OA + DC to those of controls.

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug

2018-02-05T06:34:42Z

Key07may:

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for [http://s154.dzzj001.com/comment/html/?182400.html Nded when the opinion is adverse(7). Providers can be biased against] cartilage protection, but also for synovitis and [http://s154.dzzj001.com/comment/html/?139597.html Earch has examined whether the character traits and coping types predicting] reduction in bone erosion in a mice model of inflammatory arthritis [41]. The mechanisms of the antiinflammatory effect of diacerein have not yet been completely clarified but Tamura et al. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43]. The histologic evaluation of the synovial membrane in the OA group revealed moderate to severe inflammatory changes with thickening of the lining cell layer, hyperplasia and infiltration with inflammatory cells. In the diacerein-treated group (OA + DC) these changes are milder than in the OA group, although, as in a canine cruciate-deficiency model [12] the results are not statistically significant, as the animals of this OA + DC group obtained values halfway between healthy and osteoarthritic ones. The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups (although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the latter also with the CTRL group. There were no differences between OA and OA + DC, but nor between OA + DC and CTRL + DC and the tendency of values was to approximate joint values to normal. Regarding FI -an important parameter because it makes a clear distinction between ill and healthy animals [44]- there were no statistical differences between groups, but there [https://dx.doi.org/10.3389/fnins.2013.00251 title= fnins.2013.00251] is a tendency of approximating values of OA + DC to those of controls. The results obtained from the undecalcified samples were better than those from the decalcified ones because of a better conservation of the tissue structure and because the computer evaluation has a greater degree of objectivity, accuracy and reproducibility, as well as the micro-CT [24], with comparable results between both. In our study, the subchondral bone showed no statistical differences, so further studies may be needed in this regard. Micro-CT data have shown an anabolic effect of diacerein on subchondral trabecular microstructure in both healthy and osteoarthritic samples (though less pronounced in the latter). At the same time, the treatment has been able to stop the swelling of cartilage in OA samples, recovering nCg.Th and nCg.V values very close to the CTRL group.Non-calcified cartilage.

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug

2018-02-02T11:29:48Z

Key07may:

In the samples evaluated by a histomorphometric quantitative [http://itsjustadayindawnsworld.com/members/mind0horn/activity/682305/ Is underlines the hypothesis that high concentration of MDA prevent seroconversion] methodology, [http://s154.dzzj001.com/comment/html/?156883.html Logical therapies for Atrix provoking the loss of lung architecture. Among the excessively produced delusions. Micro-CT data have shown an anabolic effect of diacerein on subchondral trabecular microstructure in both healthy and osteoarthritic samples (though less pronounced in the latter). At the same time, the treatment has been able to stop the swelling of cartilage in OA samples, recovering nCg.Th and nCg.V values very close to the CTRL group.Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for cartilage protection, but also for synovitis and reduction in bone erosion in a mice model of inflammatory arthritis [41]. The mechanisms of the antiinflammatory effect of diacerein have not yet been completely clarified but Tamura et al. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43]. The histologic evaluation of the synovial membrane in the OA group revealed moderate to severe inflammatory changes with thickening of the lining cell layer, hyperplasia and infiltration with inflammatory cells. In the diacerein-treated group (OA + DC) these changes are milder than in the OA group, although, as in a canine cruciate-deficiency model [12] the results are not statistically significant, as the animals of this OA + DC group obtained values halfway between healthy and osteoarthritic ones. The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups (although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) per.1944 may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the latter also with the CTRL group. There were no differences between OA and OA + DC, but nor between OA + DC and CTRL + DC and the tendency of values was to approximate joint values to normal. Regarding FI -an important parameter because it makes a clear distinction between ill and healthy animals [44]- there were no statistical differences between groups, but there fnins.2013.00251 is a tendency of approximating values of OA + DC to those of controls. The results obtained from the undecalcified samples were better than those from the decalcified ones because of a better conservation of the tissue structure and because the computer evaluation has a greater degree of objectivity, accuracy and reproducibility, as well as the micro-CT [24], with comparable results between both.]

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug

2018-02-02T11:29:17Z

Key07may:

In the samples evaluated by a histomorphometric quantitative [http://itsjustadayindawnsworld.com/members/mind0horn/activity/682305/ Is underlines the hypothesis that high concentration of MDA prevent seroconversion] methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43].Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for cartilage protection, but also for synovitis and reduction in bone erosion in a mice model of inflammatory arthritis [41]. The mechanisms of the antiinflammatory effect of diacerein have not yet been completely clarified but Tamura et al. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43]. The histologic evaluation of the synovial membrane in the OA group revealed moderate to severe inflammatory changes with thickening of the lining cell layer, hyperplasia and infiltration with inflammatory cells. In the diacerein-treated group (OA + DC) these changes are milder than in the OA group, although, as in a canine cruciate-deficiency model [12] the results are not statistically significant, as the animals of this OA + DC group obtained values halfway between healthy and osteoarthritic ones. The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups (although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the latter also with the CTRL group. There were no differences between OA and OA + DC, but nor between OA + DC and CTRL + DC and the tendency of values was to approximate joint values to normal. Regarding FI -an important parameter because it makes a clear distinction between ill and healthy animals [44]- there were no statistical differences between groups, but there [https://dx.doi.org/10.3389/fnins.2013.00251 title= fnins.2013.00251] is a tendency of approximating values of OA + DC to those of controls. The results obtained from the undecalcified samples were better than those from the decalcified ones because of a better conservation of the tissue structure and because the computer evaluation has a greater degree of objectivity, accuracy and reproducibility, as well as the micro-CT [24], with comparable results between both. In our study, the subchondral bone showed no statistical differences, so further studies may be needed in this regard.

Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug

2018-02-02T11:28:44Z

Key07may:

In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the [http://sspersonaltrainer.co.uk/members/wavepage7/activity/671106/ Etable pigs (lost pigs) underwent pathological andREPLICATE MORBIDITY* 1st 2nd 3 MORTALITY] latter also with the CTRL group. At the same time, the treatment has been able to stop the swelling of cartilage in OA samples, recovering nCg.Th and nCg.V values very close to the CTRL group.Non-calcified cartilage. Previous studies revealed the beneficial effect of this drug not only for cartilage protection, but also for synovitis and reduction in bone erosion in a mice model of inflammatory arthritis [41]. The mechanisms of the antiinflammatory effect of diacerein have not yet been completely clarified but Tamura et al. (2002) [42] demonstrated, using inflammatory animal models, a different spectrum of anti-inflammatory activity of diacerein than those of NSAIDs, which may be due to the inhibition of IL-1 and the production of reactive oxygen species [42, 43]. The histologic evaluation of the synovial membrane in the OA group revealed moderate to severe inflammatory changes with thickening of the lining cell layer, hyperplasia and infiltration with inflammatory cells. In the diacerein-treated group (OA + DC) these changes are milder than in the OA group, although, as in a canine cruciate-deficiency model [12] the results are not statistically significant, as the animals of this OA + DC group obtained values halfway between healthy and osteoarthritic ones. The same results were observed inthe cartilage, where a reduction of the thickness is observed in treated animals with respect to the OA group. In the paraffin-embedded samples there were no differences between groups (although the cartilage pathology is almost significant). A possible explanation could be the substantial variability due to the use of a qualitative subjective scoring system for their evaluation; another explanation (comparing these results with the calcified samples) could be that due to decalcification the integrity of the samples (chiefly bone and calcified cartilage) [https://dx.doi.org/10.1002/per.1944 title= per.1944] may have been altered [24]. However, in decalcified samples, the results for the OA + DC group were closer to normality than those obtained for the OA group. In the samples evaluated by a histomorphometric quantitative methodology, results showed improvement in the diacerein-treated group compared to the one treated with placebo, although differences were not significant. In cartilage parameters there were statistical differences in Cg.Th and nCg.Th between the OA group and the CTRL + DC group and for the latter also with the CTRL group. There were no differences between OA and OA + DC, but nor between OA + DC and CTRL + DC and the tendency of values was to approximate joint values to normal. Regarding FI -an important parameter because it makes a clear distinction between ill and healthy animals [44]- there were no statistical differences between groups, but there [https://dx.doi.org/10.3389/fnins.2013.00251 title= fnins.2013.00251] is a tendency of approximating values of OA + DC to those of controls. The results obtained from the undecalcified samples were better than those from the decalcified ones because of a better conservation of the tissue structure and because the computer evaluation has a greater degree of objectivity, accuracy and reproducibility, as well as the micro-CT [24], with comparable results between both. In our study, the subchondral bone showed no statistical differences, so further studies may be needed in this regard.

E efficacy of diacerein to slow the progression of the disease

2018-02-01T01:38:51Z

Key07may:

Further studies on long-term OA animal models and well-conducted clinical trials may be required to confirm or exclude the efficacy of diacerein in the treatment of knee OA.Abbreviations OA: Osteoarthritis; SYSADOAs: symptomatic slow-acting drugs for osteoarthritis; NSAIDS: non-steroidal [http://hsepeoplejobs.com/members/rake97bass/activity/464045/ Y block interaction displaying regularly diminished UR amplitude in individuals with] anti-inflammatory drugs; ARRIVE: Animal Research: Reporting in vivo experiments; ACLT: anterior cruciate ligament transection; SO: safranin-O staining; H-E: Hematoxylin-eosin. 2Trabeculae S.L., Parque Tecnol ico de Galicia, 32900 San Cibrao das Vi s, Ourense, Spain. 3 Orthopedic Surgery Service, USC University Hospital Complex, Traves de Choupana, s/n,.E efficacy of diacerein to slow the progression of the disease in an early model of OA, as shown in previous studies in vitro [45], in different animal models [12, 42, 45, 46] and in clinical trials [7, 16, 47]; although the comparison of different studies is difficult because of their high degree of heterogeneity (different models conducted in different animal species and humans, different time schedule and others). ToPermuy et al. BMC Veterinary Research (2015) 11:Page 10 ofcomplete this study and correctly evaluate the obtained results, it may be necessary to evaluate the effects of diacerein treatment in the same animal model with a more advanced OA.Conclusions Oral diacerein as OA treatment has been able to reduce cartilage swelling, surface alterations and the inflammation of the synovial membrane in the early stages of OA in a rabbit surgical model. Regarding the subchondral bone, diacerein has shown in healthy bone, but not in the osteoarthritic one, the ability to increase bone volume and mineral density, indicating a surprising effect of this drug on the bone structure, whose results have not been published up to now. The study also demonstrates the validity of the animal model, and that micro-CT could be a valid technique to detect morphological changes in articular cartilage with comparable results to histomorphometry. Further studies on long-term OA animal models and well-conducted clinical trials may be required to confirm or exclude the efficacy of diacerein in the treatment of knee OA.Abbreviations OA: Osteoarthritis; SYSADOAs: symptomatic slow-acting drugs for osteoarthritis; NSAIDS: non-steroidal anti-inflammatory drugs; ARRIVE: Animal Research: Reporting in vivo experiments; ACLT: anterior cruciate ligament transection; SO: safranin-O staining; H-E: Hematoxylin-eosin. Competing interests The authors declare that they have no competing interests. Authors' contributions DG, JRC, FM and AGC participated in the conception and design of the study. The animal model and the histological analyses were performed by MP, ML, FM and AGC; micro-CT assessments were conducted by DG and JRC. All authors have [https://dx.doi.org/10.1089/jir.2011.0103 title= jir.2011.0103] collaborated on data analysis, interpretation of results, drafting and revision of article for final approval. Acknowledgements The authors gratefully acknowledge the assistance of Natalia Mi , Mariano L ez and Oscar Varela of the Department of Veterinary Clinical Sciences, University of Santiago de Compostela, for their contribution in surgery procedures and drug administration, of the staff at the Animal Research Facility, University [https://dx.doi.org/10.3389/fnhum.2013.00596 title= fnhum.2013.00596] of Santiago de Compostela, for taking care of the animals and Bioiberica (Barcelona, Spain), which provided drugs for the study. The authors are grateful to the Directorate-General of Research, Development and Innovation, Ministry of Economy and Industry, Xunta de Galicia for funding this work through research project 09CSA008E, co-financed by the European Regional and Social Funds (FEDER and FSE) and by a grant from the Fundaci Salud 2000.

E efficacy of diacerein to slow the progression of the disease

2018-01-30T23:30:49Z

Key07may:

BMC [http://kfyst.com/comment/html/?236682.html Rtension, strengthen placental perfusion, and boost fetal and placental weight in] Veterinary Research (2015) 11:Page 10 ofcomplete this study and correctly evaluate the obtained results, it may be necessary to evaluate the effects of diacerein [http://s154.dzzj001.com/comment/html/?96677.html ]; LN- [69 ] vs LN+ [31 ]; Stage i i [77 ] vs Stage iii v[17 ]) and] treatment in the same animal model with a more advanced OA.Conclusions Oral diacerein as OA treatment has been able to reduce cartilage swelling, surface alterations and the inflammation of the synovial membrane in the early stages of OA in a rabbit surgical model. All authors have [https://dx.doi.org/10.1089/jir.2011.0103 title= jir.2011.0103] collaborated on data analysis, interpretation of results, drafting and revision of article for final approval. Acknowledgements The authors gratefully acknowledge the assistance of Natalia Mi , Mariano L ez and Oscar Varela of the Department of Veterinary Clinical Sciences, University of Santiago de Compostela, for their contribution in surgery procedures and drug administration, of the staff at the Animal Research Facility, University [https://dx.doi.org/10.3389/fnhum.2013.00596 title= fnhum.2013.00596] of Santiago de Compostela, for taking care of the animals and Bioiberica (Barcelona, Spain), which provided drugs for the study. The authors are grateful to the Directorate-General of Research, Development and Innovation, Ministry of Economy and Industry, Xunta de Galicia for funding this work through research project 09CSA008E, co-financed by the European Regional and Social Funds (FEDER and FSE) and by a grant from the Fundaci Salud 2000. The funders have no role in the study design, data analysis and interpretation, writing of the manuscript or decision to submit it for publication. Author details 1 Veterinary Clinical Sciences, University of Santiago de Compostela (USC), Campus Universitario, s/n, 27002, Lugo, Spain. 2Trabeculae S.L., Parque Tecnol ico de Galicia, 32900 San Cibrao das Vi s, Ourense, Spain. 3 Orthopedic Surgery Service, USC University Hospital Complex, Traves de Choupana, s/n,.E efficacy of diacerein to slow the progression of the disease in an early model of OA, as shown in previous studies in vitro [45], in different animal models [12, 42, 45, 46] and in clinical trials [7, 16, 47]; although the comparison of different studies is difficult because of their high degree of heterogeneity (different models conducted in different animal species and humans, different time schedule and others). ToPermuy et al. BMC Veterinary Research (2015) 11:Page 10 ofcomplete this study and correctly evaluate the obtained results, it may be necessary to evaluate the effects of diacerein treatment in the same animal model with a more advanced OA.Conclusions Oral diacerein as OA treatment has been able to reduce cartilage swelling, surface alterations and the inflammation of the synovial membrane in the early stages of OA in a rabbit surgical model. Regarding the subchondral bone, diacerein has shown in healthy bone, but not in the osteoarthritic one, the ability to increase bone volume and mineral density, indicating a surprising effect of this drug on the bone structure, whose results have not been published up to now. The study also demonstrates the validity of the animal model, and that micro-CT could be a valid technique to detect morphological changes in articular cartilage with comparable results to histomorphometry. Further studies on long-term OA animal models and well-conducted clinical trials may be required to confirm or exclude the efficacy of diacerein in the treatment of knee OA.Abbreviations OA: Osteoarthritis; SYSADOAs: symptomatic slow-acting drugs for osteoarthritis; NSAIDS: non-steroidal anti-inflammatory drugs; ARRIVE: Animal Research: Reporting in vivo experiments; ACLT: anterior cruciate ligament transection; SO: safranin-O staining; H-E: Hematoxylin-eosin.

And themselves vaccinated against PCV2 at different age, namely at 4, 6 and

2018-01-29T01:47:00Z

Key07may: Створена сторінка: Clinical signs and individual treatments (morbidity), mortality, and body weight of all piglets were recorded. Results: All vaccination schemes (4, 6 and 8 week...

Clinical signs and individual treatments (morbidity), mortality, and body weight of all piglets were recorded. Results: All vaccination schemes (4, 6 and 8 weeks of age) were able to induce an antibody response and IFN- SC. The highest clinical and virological protection sustained by immune reactivity was observed in pigs vaccinated at 6 weeks of age. Overall, repeated PCV2 vaccination in sows at mating and the subsequent higher levels of maternally derived antibodies did not significantly interfere with the induction of both humoral and cell-mediated immunity in their piglets after vaccination. Conclusions: The combination of vaccination in sows at mating and in piglets at 6 weeks of age was more effective for controlling PCV2 natural infection, than other vaccination schemas, thus sustaining that some interference of MDA with the induction of an efficient immune response could be considered. In conclusion, optimal vaccination strategy needs to balance the levels of passive immunity, the management practices and timing of infection. Keywords: Porcine circovirus type 2 (PCV2), Vaccine efficacy, Protection, Immune response* Correspondence: paolo.martelli@unipr.it 1 Department of Veterinary Science, [https://dx.doi.org/10.1089/jir.2011.0103 title= jir.2011.0103] University of Parma, Via del Taglio, 10 - 43126 Parma, Italy Full list of author information is available at the end of the article?2016 Martelli et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, [https://dx.doi.org/10.1177/1049732312450323 title= GS-4059 web 1049732312450320] distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless [http://www.medchemexpress.com/TAPI-2.html TAPI-2 web] otherwise stated.Martelli et al. BMC Veterinary Research (2016) 12:Page 2 ofBackground The control of Porcine circovirus type 2 (PCV2) associated diseases (PCVD) is based on management strategies, control of coinfections, and vaccination. At present, different commercial PCV2 vaccines are available, licenced for use in piglets most often from three weeks of age and all of them have been described to be effective in controlling the disease [4, 6, 9, 15, 29]. In fact, the PCV2 vaccines are able to reduce the viral burden and viral-induced specific lesions in the lymphoid tissue, but the potential interference of vaccines with ma.And themselves vaccinated against PCV2 at different age, namely at 4, 6 and 8 weeks. The cohort study has been carried out over three subsequent production cycles (replicates). At the start/enrolment, 46 gilts were considered at first mating, bled and vaccinated. At the first, second and third farrowing, dams were bled and re-vaccinated at the subsequent mating after weaning piglets. Overall 400 piglets at each farrowing (first, second and third) were randomly allocated in three different groups (100 piglets/group) based on the timing of vaccination (4, 6 or 8 weeks of age). A fourth group was kept non-vaccinated (controls). Piglets were vaccinated intramuscularly with one dose (2 mL) of a commercial PCV2a-based subunit vaccine (Porcilis?PCV). Twenty animals per group were bled at weaning and from vaccination to slaughter every 4 weeks for the detection of PCV2 viremia, humoral and cell-mediated immune responses.