454 research outputs found

    UVEODERMATOLOGICAL SYNDROME IN A COCKER-POODLE MIXED-BREED DOG

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    A síndrome uveodermatológica, um distúrbio auto-imune que apresenta sinais oculares e cutâneos, tem sido descrita freqüentemente em cães da raça Akita, raramente, em outras raças e não há relato em cães mestiços. Neste artigo, descreve-se a síndrome em um cão mestiço Cocker com Poodle. Abstract The uveodermatological syndrome, an auto-immune disorder having ophthalmic and dermal signs, has been described frequently in Akita dogs, rarely in other purebred dogs but none description of this syndrome in mixed breed dogs has been reported. In this paper, we describe the syndrome in a Cocker-Poodle mixed breed dog

    Genotypic variation for carotenoids content and chemometric model development for seed quality parameters in wheat

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    Published online: 19 August 2015Among the groups of naturally occurring pigments, carotenoids serve numerous purposes in plants, including antioxidant activity and protection of the photosynthetic apparatus from the excess of light. Alongside with essential mineral elements, these pigments are well known to have high impact on human health. Therefore, accumulation of carotenoids in wheat grain is an important trait in view to improving nutritional value of cereals. Wheat is one of the major staple foods in Portugal because of its agronomical adaptability and the usage of its flour into various traditional products. In the present investigation, the seeds of ninety-four Old Portuguese wheat cultivars grown over two years were analysed. Significant genetic variability for content of carotenoids was observed in the studied lines. Within the 47 bread wheat genotypes the Yellow Pigment Content (YPC) values varied from 2.7 - 5.8 μg/g and 3.0 - 8.0 μg/g for 2004/2005 and 2009/2010, respectively. On the other hand, during 2004/2005 and 2009/2010, the 47 durum wheat cultivars exhibited the YPC values from 1.1 - 8.0 μg/g and 3.4 - 8.3 μg/g, respectively. In addition, multivariate methods were also explored to assess the wheat grains quality, resorting to FTIR spectroscopy (Figure 1). Preliminary analyses of FTIR spectra clearly revealed differences among the distinct studied genotypes. Thus, in order to find spectroscopical patterns related to carotenoids accumulation and antioxidant activity, efforts are being made to develop a model that will allow the assessment of these parameters through FTIR, in the near-future

    Response surface for biodiesel production from soybean oil by ethylic route

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    Petroleum has been the most consumed energy source in the world, but it tends to run out due its non-renewable character. Among biofuels, biodiesel has emerged as the main candidate to substitute petroleum diesel. The present study aimed to identify the maximum yield point of biodiesel production by generating a response surface using molar ratio, temperature and agitation time as independent variables, and yield as a dependent variable. From the response surface, it is observed that the increase in temperature and reaction time leads to reduced yield. The configuration that resulted in maximum yield of 93.30% was 12:1 molar ratio, 30 °C temperature and 30-minute reaction time. From the chromatographic analysis it was possible to identify five different fatty acids in the composition of the biodiesels. Total saturated fatty acids (palmitic and stearic acids) ranged from 41.53% to 42.09% and total unsaturated fatty acids including monounsaturated and polyunsaturated fatty acids (oleic, linoleic and linolenic acids) ranged from 57.92% to 58.48%. According to the results of the physicochemical analyses, the specific mass at 68°F is in agreement with Brazilian, American and European specifications, ranging from 877.46 kg m-3 to 879.64 kg m-3 . The kinematic viscosity at 104 °F ranged from 4.49 mm² s -1 to 4.82 mm² s -1 . The acid value obtained did not vary within the limits established by the norms, and values between 0.54 and 2.74 mg KOH g -1 were observed

    PADRONIZAÇÃO DA CITOLOGIA DE IMPRESSÃO DA SUPERFÍCIE OCULAR CANINA

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    Técnica de exame de citologia de impressão foi padronizada em olhos de cães sem alterações oculares. Foram realizados exames de citologia de impressão do epitélio corneano, conjuntival e tarsal em 30 olhos de 21 animais de raças e idades variadas. As amostras foram colhidas de cães atendidos no Hospital Veterinário da FMVZ-USP entre fevereiro e julho de 2003, sendo coradas e avaliadas no Laboratório de Doenças Externas Oculares da UNIFESP. A colheita foi bem tolerada pelos cães e o papel filtro utilizado removeu células em quantidade e morfologia adequadas para estudo citológico. Foi observado em 100% dos casos que o epitélio da conjuntiva bulbar canina apresenta aspecto metaplasia-like, com ausência de células caliciformes. Estas só foram encontradas na conjuntiva tarsal em 21,4% das amostras avaliadas dessa região. A citologia de impressão é um método factível para avaliação da superfície ocular em cães. Entretanto, a celularidade das amostras obtidas do tarso mostrou-se inadequada. Além disso, a pesquisa da densidade de células caliciformes em áreas bulbares, embora usada em seres humanos, pode não servir como indicador de alteração da superfície ocular para a espécie canina. Standardization of canine ocular surface impression cytology Abstract Impression cytology technique in dog eyes without ocular disease was standardized. Impression cytology was performed in corneal, conjunctival and tarsal epithelium in 30 eyes of 21 animals with different races and ages. Samples were obtained from dogs attended in FMVZ-USP Veterinary Hospital between February to July 2003, being stained and evaluated at UNIFESP´s External Eye Disease Laboratory. Sampling was well tolerated by dogs and the filter paper used removed cells with adequate morphology and quantity for cytologyc evaluation. In all cases canine bulbar conjunctival epithelium showed metaplasia-like features without goblet cells. Impression cytology is a feasible method for ocular surface evaluation in dogs. However, celularity was considered inadequated in samples obtained from tarsal conjunctiva. Furthermore, seeking goblet cell density in bulbar areas, although used in human beings, may not be used as an ocular surface disease indicator in canine species

    Variability of earthworm's functional traits in eastern Amazon is more species-dependent than environment-dependent

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    Understanding the causes of variability in functional traits is an important question in earthworm ecology. While interspecific variation in anatomical dimensions for the same trait is well accepted, the role of environmental filters, soil degradation, and environmental stress in affecting the variability of functional traits is not well understood. In this study, we sought to determine the relative importance of environmental factors and earthworm species taxonomy on the variability in functional traits within species (intraspecific variability). We focused on eight functional traits including body mass, body length, body diameter, gizzard, gizzard thickness, septum thickness, typhlosole, and gut organic matter. We sampled earthworms of 11 different species in various regions of the eastern Amazon to determine the general responses of different species' characteristics when exposed to various ecosystem and soil conditions. Our results suggest that the functional traits of earthworms are influenced in different ways by environmental conditions. One set of traits, including body mass, body length, and body diameter, was more constant and independent of environmental variability, while another set, including gizzard diameter and length, gizzard muscle thickness, septum thickness, typhlosole, and intestinal organic matter, was more sensitive. The most affected by different environmental variables was septum thickness. We also examined which environmental factors are most important for trait variability. Our study highlights the importance of considering both environmental factors and taxonomic classification when studying the variability of functional traits within earthworm species. Overall, our results suggest that taxonomic classification alone is a good guide for estimating the major functional traits of earthworms in the Brazilian Amazon, but local conditions can their variability is which is essential for informing conservation efforts and maintaining ecosystem function

    Viability Of Nerve Grafts Preserved In Different Storage Medium

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    We compared the structural features of nerve segments stored in two different solutions previous and after autologous transplantation. Male Wistar rats were divided into groups to obtain normal tibial nerves, freshly transplanted nerves, and nerves stored in Wisconsin/Belzer or Collins solution for 24 or 72 h at 4°C and transplanted. Stored and transplanted segments were processed for morphologic and morphometric analysis. The cross-sections of segments stored in Wisconsin/Belzer and Collins solution presented aspects similar to that of normal nerves. The density of large-caliber myelinated axons was higher in grafts stored in Wisconsin/Belzer solution than in those preserved in Collins solution. But the density of myelinated axons regenerated through these grafts was around 80% to that registered in the fresh and Wisconsin/Belzer preserved grafts. Moreover, no significant differences in the morphometric parameters were observed between groups. Our data confirm the efficacy of Wisconsin/Belzer to nerve graft preservation and stimulate more detailed physiological, biochemical and molecular studies to rationalize the employment of less expensive and handful storage solutions for short term preservation of peripheral nerve grafts.2413946Ametani, M.S., Southard, J.H., Belzer, F.O., Importance of glutathione and adenosine in cold storage of the kidney (1990) Transplant. Proc, 22, pp. 469-471Ard, M.D., Bunge, R.P., Bunge, M.B., Comparison of the Schwann cell surface and Schwann cell extracellular matrix as promoters of neurite growth (1987) J Neurocytol, 16, pp. 539-555Atchabahian A, Gender EM, Mackinnon SE, Doolabh VB, Hunte DA (1998) Regeneration through long nerve grafts in the swine model. Microsurgery 18, 379-382Atchabahian, A., Mackinnon, S.E., Hunter, D.A., Cold preservation of nerve grafts decreases expression of ICAM-1 and class II MHC antigens (1999) J. Reconstr. Microsurg, 15, pp. 307-311Aumailley, M., Smyth, N., The role of laminins in basement membrane function (1998) J. Anat, 193, pp. 1-21Benzel, E.C., Management of peripheral nerve trauma (1996) The Practice of Neurosurgery, pp. 156-178. , Tindall GT, Cooper PR, Barrow DL, eds, pp, Willians & Wilkins: BaltimoreBunge, R.P., The role of the Schwann cell in trophic support and regeneration (1994) J. Neurol, 242 (SUPPL.), pp. S19-S21Chen, L.E., Seaber, A.V., Urbaniak, J.R., Murrel, G.A., Denatured muscle as nerve conduit: A functional, morphologic and electrophysiologic evaluation (1994) J. Reconstr. Microsurg, 10, pp. 137-144Chen, Y.S., Hsieh, C.L., Tsai, C.C., Chen, T.H., Cheng, Y.S., Hu, C.L., Yao, H., Peripheral nerve regeneration using silicone rubber chambers filled with collagen, laminin and fibronectin (2000) Biomaterials, 21, pp. 1541-1547Chen, Z.L., Strickland, S., Laminin gamma1 is critical for Schwann cell differentiation, axon myelination, and regeneration in the peripheral nerve (2003) J. Cell Biol, 163, pp. 889-899De Medinacelli, L., Seaber, A.V., Experimental nerve reconnection: Importance of initial repair (1989) Microsurgery, 10, pp. 56-70Evans, G.R.D., Brandt, K., Katz, S., Chauvin, P., Otto, L., Bogle, M., Wang, B., Patrick Jr, C.W., Bioactive poly(L-lactic acid) conduits seeded with Schwann cells for peripheral nerve regeneration (2002) Biomaterials, 23, pp. 841-848Evans, P.J., Mackinnon, S.E., Levi, A.D.O., Wade, J.A., Hunter, D.A., Nakao, Y., Midha, R., Cold preserved allografts, changes in basement membrane, viability, immunogenicity and regeneration (1998) Muscle Nerve, 21, pp. 1507-1522Evans, P.J., Mackinnon, S.E., Best, T.J., Wade, J.A., Awerbuck, D.C., Makino, A.P., Hunter, D.A., Midha, R., Regeneration across preserved peripheral nerve grafts (1995) Muscle Nerve, 18, pp. 1128-1138Fansa, H., Keilhoff, G., Plogmeier, K., Frerichs, O., Wolf, G., Schneider, W., Successful implantation of Schwann cells in acellular muscles (1999) J. Reconstr. Microsurg, 15, pp. 61-65Fansa, H., Lassner, F., Kook, P.H., Keilhoff, G., Schneider, W., Cryopreservation of peripheral nerve grafts (2000) Muscle Nerve, 23, pp. 1227-1233Figueiredo, J.F., Fisiologia e Fisiopatologia da Conservação de Órgãos. Captação de Órgãos para Transplante (1997) Gráfica e Editora, , Tecla: CampinasFox, I.K., Jaramillo, A., Hunter, D.A., Rickman, S.R., Mohanakumar, T., Mackinnon, S.E., Prolonged cold-preservation of nerve allografts (2005) Muscle Nerve, 31, pp. 59-69Hadlock, T.A., Sundback, C.A., Hunter, D.A., Vacanti, J.P., Cheney, M.L., A new artificial nerve graft containing rolled Schwann cell monolayers (2001) Microsurgery, 21, pp. 96-101Hall, S., The response to injury in the peripheral nervous system (2005) J. Bone Joint Surg. Br, 87, pp. 1309-1319Hare, G.M.T., Evans, P.J., Mackinnon, S.E., Nakao, Y., Midha, R., Wade, J.A., Hunter, D.A., Hay, J.B., Effect of cold preservation on lymphocyte migration into peripheral nerve allografts in sheep (1993) Transplantation, 56, pp. 154-162Jamieson, N.V., Lindell, R., Southard, J.H., Belzer, F.O., Evaluation of simplified variants of the UW solution using the isolated perfused rabbit liver (1989) Transplant. Proc, 21, pp. 1294-1295Karacaoglu, E., Yuksel, F., Peker, F., Guler, M.M., Nerve regeneration through sheath: Its functional aspect compared with nerve and vein grafts (2001) Microsurgery, 21, pp. 196-201Kerr-Conte, J., Boudjema, K., Southard, J.H., Cinqualbre, J., Mechanism of hypothermic cell death: Glutathione prevents injury in hepatocytes during hypothermic (4°C) preservation (1991) Transplant. Proc, 23, pp. 2405-2406Koyama, I., Bulkley, G.B., Williams, G.M., Im, M.J., The role of oxygen free radicals in mediating reperfusion injury of cold preserved ischemic kidneys (1985) Transplantation, 40, pp. 590-595Krekoski, C.A., Neubauer, D., Zuo, J., Muir, D., Axonal regeneration into acellular nerve grafts is enhanced by degradation of chondroitin sulfate proteoglycan (2001) J. Neurosci, 21, pp. 6206-6213Levi, A.D.O., Evans, P.J., Mackinnon, S.E., Bunge, R.P., Cold storage of peripheral nerve: An in vitro assay of cell viability and function (1994) Glia, 10, pp. 121-131Mackinnon, S.E., Techniques of nerve repair (1996) The Practice of Neurosurgery, pp. 179-202. , Tindall GT, Cooper PR, Barrow DL, eds, pp, Williams & Wilkins: BaltimoreMackinnon, S.E., Doolabh, V.B., Novak, C.B., Trulock, E.P., Clinical outcome following nerve allograft transplantation (2001) Plast. Reconstr. Surg, 107, pp. 1419-1429Matejcik, V., Peripheral nerve reconstruction by autograft (2002) Injury, 33, pp. 627-631Suzuki, K., Suzuki, Y., Tanihara, M., Ohnishi, H., Hashimoto, T., Endo, K., Nishimura, Y., Reconstruction of rat peripheral nerve gap without sutures using freeze-dried alginate gel (2000) J. Biomed. Mater. Res, 49, pp. 528-533Southard, J.H., Marsh, D.C., McAnulty, J.F., Belzer, F.O., The importance of O2-derived free radical injury to organ preservation and transplantation (1987) Transplant. Proc, 19, pp. 1380-1381Strasberg, S.R., Mackinnon, S.E., Genden, E.M., Baian, J.R., Purcell, C.M., Hunter, D.A., Hay, J.B., Long-segment nerve allograft regeneration in the sheep model: Experimental study and review of the literature (1996) J. Reconstr. Microsurg, 12, pp. 529-537Sumimoto, R., Dohi, K., Urushihara, T., Jamieson, N.V., Ito, H., Sumimoto, K., Fukuda, Y., An examination of the effects of the solution containing histidine and lactobionate for heart, pancreas and liver preservation in the rat (1992) Transplantation, 54, pp. 1206-1210Sumimoto, R., Lindell, S.L., Southard, J.H., Belzer, F.O., A comparison of histidine-lactobionate and UW solution in 48-hour liver preservation (1992) Transplantation, 54, pp. 610-614Terenghi, G., Peripheral nerve injury and regeneration (1995) Histol. Histopathol, 10, pp. 709-718Toledo-Pereyra, L.H., Simmons, R.L., Olson, L.C., Najarian, J.S., Clinical effects of allopurinol on preserved kidneys: A randomized double-blind study (1977) Ann. Surg, 185, pp. 128-136Trumble, T.E., Parvin, D., Cell viability and migration in nerve isograft and allografts (1994) J. Reconstr. Microsurg, 10, pp. 27-34Vreugdenhil, P.K., Evans, W., Belzer, F.O., Southard, J.H., Glutathione depletion in cold-storage organs (1990) Transplant. Proc, 22, pp. 455-45

    Evaluation of SHOX defects in the era of next‐generation sequencing

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    Short stature homeobox (SHOX) haploinsufficiency is a frequent cause of short stature. Despite advances in sequencing technologies, the identification of SHOX mutations continues to be performed using standard methods, including multiplex ligation‐dependent probe amplification (MLPA) followed by Sanger sequencing. We designed a targeted panel of genes associated with growth impairment, including SHOX genomic and enhancer regions, to improve the resolution of next‐generation sequencing for SHOX analysis. We used two software packages, CONTRA and Nexus Copy Number, in addition to visual analysis to investigate the presence of copy number variants (CNVs). We evaluated 15 patients with previously known SHOX defects, including point mutations, deletions and a duplication, and 77 patients with idiopathic short stature (ISS). The panel was able to confirm all known defects in the validation analysis. During the prospective evaluation, we identified two new partial SHOX deletions (one detected only by visual analysis), including an intragenic deletion not detected by MLPA. Additionally, we were able to determine the breakpoints in four cases. Our results show that the designed panel can be used for the molecular investigation of patients with ISS, and it may even detect CNVs in SHOX and its enhancers, which may be present in a significant fraction of patients.Copy number variants analyses and Sanger sequencing of breakpoint regions in Case 11, which has a heterozygous deletions involving exons 4, 5, and 6a of short stature homeobox (SHOX).Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/151254/1/cge13587.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/151254/2/CGE_13587-sup-0001-Supinfo.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/151254/3/cge13587_am.pd
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