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Acute ruminal acidosis (ARA) is caused by the excessive intake of highly fermentable carbohydrates, followed by the massive production of D-lactate and the appearance of neutrophilic aseptic polysynovitis. Bovines with ARA develop different lesions, such as ruminitis, polioencephalomalacia (calves), liver abscess and lameness. Lameness in cattle with ARA is closely associated with the presence of laminitis and polysynovitis. However, despite decades of research in bovine lameness as consequence of ruminal acidosis, the aetiology and pathogenesis remain unclear. Fibroblast-like synoviocytes (FLSs) are components of synovial tissue, and under pathological conditions, FLSs increase cytokine production, aggravating inflammatory responses. We hypothesized that D-lactate could induce cytokine production in bovine FLSs. Analysis by qRT-PCR and ELISA revealed that D-lactate, but not L-lactate, increased the expression of IL-6 and IL-8 in a monocarboxylate transporter-1-dependent manner. In addition, we observed that the inhibition of the p38, ERK1/2, PI3K/Akt, and NF-κB pathways reduced the production of IL-8 and IL-6. In conclusion, our results suggest that D-lactate induces an inflammatory response; this study contributes to the literature by revealing a potential key role of D-lactate in the polysynovitis of cattle with ARA.

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The early detection of bronchial inflammation in asthma, through a non-invasive, simple method and under a subclinical state, could lead to a more effective control of this condition. The aim of this study was to identify biomarkers of bronchial inflammation in the saliva of children with asthma through immunoassay and Surface Enhanced Raman Spectroscopy (SERS). We conducted an analytical cross-sectional study in 44 children ages 6-12; the diagnosis of asthma was made according to Global Initiative for Asthma (GINA) standards. The children's saliva was analyzed by immunoassay for the quantification of 37 cytokines, as well as SERS analysis in a confocal Raman microscope at 785 nm. We found a significant association between bronchial obstruction and IL-8 (p = 0.004), IL-10 (p = 0.008) and sCD163 (p = 0.003). The Raman spectra showed significant amplification in the region of 760 to 1750 cm-1. The Principal Component Analysis and Linear Discriminant Analysis (PCA-LDA) method has a sensitivity of 85%, specificity of 82% and an accuracy of 84% for the diagnosis of asthma. These results demonstrate the presence of a subclinical inflammatory state, suggestive of bronchial remodeling in the population studied. The SERS method is a potential tool for identifying bronchial inflammation and its endotype, allowing for a highly sensitive and specific diagnosis.

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Macrophages and neutrophils are important cellular components in the process of acute inflammation and its subsequent resolution, and evidence increasingly suggests that they play important functions during the resolution of chronic, adaptive inflammatory processes. Exacerbated neutrophil activity can be harmful to surrounding tissues; this is important in a range of diseases, including allergic asthma and chronic obstructive pulmonary disease in humans, and equine asthma (also known as recurrent airway obstruction (RAO). Tamoxifen (TX) is a non-steroidal estrogen receptor modulator with effects on cell growth and survival. Previous studies showed that TX treatment in horses with induced acute pulmonary inflammation promoted early apoptosis of blood and BALF neutrophils, reduction of BALF neutrophils, and improvement in animals' clinical status. The aim of this study was to describe if TX induces in vitro efferocytosis of neutrophils by alveolar macrophages. Efferocytosis assay, myeloperoxidase (MPO) detection and translocation phosphatidylserine (PS) were performed on neutrophils isolated from peripheral blood samples from five healthy horses. In in vitro samples from heathy horses, TX treatment increases the phenomenon of efferocytosis of peripheral neutrophils by alveolar macrophages. Similar increases in supernatant MPO concentration and PS translocation were observed in TX-treated neutrophils, compared to control cells. In conclusion, these results confirm that tamoxifen has a direct effect on equine peripheral blood neutrophils, through stimulation of the engulfment of apoptotic neutrophils by alveolar macrophages.

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Neutrophils participate in innate immunity as the first line of host defense against microorganisms. However, exacerbated neutrophil activity can be harmful to surrounding tissues; this is important in a range of diseases, including allergic asthma and chronic obstructive pulmonary disease in humans, and equine asthma (also known as recurrent airway obstruction (RAO). Tamoxifen (TX) is a non-steroidal estrogen receptor modulator with effects on cell growth and survival. Previous preliminary studies showed that TX treatment in horses with induced acute pulmonary inflammation promoted early apoptosis of blood and BALF neutrophils, reduction of BALF neutrophils, and improvement in animals' clinical status. The aim of this study was to evaluate the in vitro effect of TX on functional tests in equine peripheral blood neutrophils. Chemotaxis, respiratory burst production and phagocytosis assays were performed on neutrophils isolated from peripheral blood samples from 10 healthy horses. Results showed that IL-8 stimulated cells decrease their chemotactic index when treated with TX (1 and 10µM). Respiratory burst production was also dampened after treatment with TX. In conclusion, these results confirm that tamoxifen has a direct action on equine peripheral blood neutrophils. However, more in vivo and in vitro studies are required to fully understand the mechanisms of action of TX on neutrophils, in order to elucidate if it can be used as treatment in disorders such as allergic asthma in humans and horses.

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A reduction in inflammatory cell apoptosis is an important concept in the maintenance of inflammation and a potential target for the resolution of inflammation in many inflammatory diseases. Dysregulation of apoptosis has been implicated in a range of diseases, including tumors, neurodegenerative disorders and autoimmunity, and may also be implicated in allergic asthma. In horses, recurrent airway obstruction (RAO) is an asthma-like condition that is characterized increased survival neutrophil bronchial. Tamoxifen is a synthetic, non-steroidal, anti-estrogen agent that is widely used for treating all stages of breast cancer and has been approved for the prevention of breast cancer in high-risk women. The observed efficacy of tamoxifen has been attributed to both growth arrest and the induction of apoptosis. Therefore, the aim of our study was to evaluate the ability of tamoxifen to induce apoptosis in vitro in granulocytic cells from peripheral blood and in mononuclear cells from bronchoalveolar lavage fluid (BALF) in horses. Flow cytometry using commercial AnnexinV-FITC and propidium iodide was used to quantify early and late apoptotic leukocytes, respectively. The results showed a significant increase in early apoptosis in peripheral blood and bronchial granulocytic cells treated with tamoxifen. The rate of early apoptosis of mononuclear cells from blood and BALF when incubated with tamoxifen was significantly lower compared with granulocytic cells. We did not observe a direct effect of tamoxifen on late apoptosis in any of the in vitro assays in the cell types used here. These results indicate that the apoptotic mechanisms under these experimental conditions would affect only blood and BALF granulocytic cells, particularly in early apoptosis. Finally, further in vitro and in vivo studies are needed to better understand apoptotic mechanisms because tamoxifen could be used to treat chronic, inflammatory pathologies associated with granulocytes and allergic diseases, such as asthma or equine RAO.

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Ankyloglossia may prevent the tongue from contacting the anterior palate, which promotes an infantile swallow and hamper the progression to an adult-like swallow. This can result in an open bite deformity and in some cases it can be associated to mandibular prognathism and language problems like rhotacism, described as the inability or difficulty in pronouncing the sound / r /. The surgical cut of the frenum tissue that connects the tongue to the jawbone (frenulectomy) and the language rehabilitation treatment with functional oral devices, represent an alternative treatment for this problem. An 11-year-old boy reported with language performance problems, dental malposition and diagnostic of ankyloglossia condition, received frenulectomy surgery and language rehabilitation treatment with functional oral devices during six months. Language diagnosis was carried out in three periods of time: prior to the surgery, four weeks after the surgery and six months later. Combined surgical and functional therapies proved to be a better alternative than only surgical therapy. Combined therapies increased the speech abilities as well as swallowing functions, therefore, the patient's self-esteem.

La anquiloglosia puede evitar que la lengua entre en contacto con la región anterior del paladar, lo que promueve una deglución infantil y dificultan la adecuada deglusión en el adulto. Esto también puede dar lugar a una mordida abierta y en algunos casos, estar asociada con prognatismo mandibular y problemas de lenguaje como el rotacismo, que se describen como la incapacidad o dificultad para pronunciar el sonido / r /. La exsición quirúrgica del tejido que conecta frenillo de la lengua a la mandíbula (frenectomía) y el tratamiento rehabilitador del lenguaje con dispositivos orales funcionales, representan una alternativa de tratamiento para este problema. Un niño de 11 años de edad, con problemas de lenguaje, malposición dental y diagnóstico de anquiloglosia, fue sometido a frenectomía y tratamiento de rehabilitación dellenguaje mediante dispositivos orales funcionales durante seis meses. El diagnóstico del lenguaje se llevó a cabo en tres periodos de tiempo: antes de la cirugía, cuatro semanas después de la cirugía y seis meses más tarde. La combinación de tratamiento quirúrgico y funcionales demostraron ser una alternativa mejor que la terapia quirúrgica por sí sola. Las terapias combinadas aumentaron la capacidad del habla, así como funciones de deglución, por lo tanto, la autoestima del paciente.

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Reaginic antibodies (IgE and some IgG subclasses) and mast cells play important roles in the induction of type I immediate hypersensitivity reactions. These antibodies bind through their Fc fragment to high affinity receptors (FcεRI) present in the membrane of mast cells and basophils. The cross-linking of the receptor initiates a coordinated sequence of biochemical and morphological events that results in exocytosis of secretory granules containing pre-formed inflammatory mediators, secretion of newly formed lipid mediators, and secretion of cytokines. Previously, several studies have investigated the role of reaginic antibodies in the pathogenesis of Recurrent Airway Obstruction (RAO). However, whereas the immunological aspects of RAO have been extensively studied, the precise sequence of events involved in the pathogenesis remains not completely understood, and the role of IgE in this disease remains controversial. Therefore, in this study, several bioassays were conducted to determine whether reaginic antibodies from RAO-affected horses have the ability to activate mast cells. These bioassays involved measuring degranulation of rat peritoneal mast cells, activation of NF-κB and morphological changes in basophilic leukemia cells (RBL-2H3) following incubation with horse serum from RAO-affected horses that were sensitive and insensitive to Aspergillus fumigatus (A. fumigatus) or from unaffected horses. Our results show that reaginic antibodies from horses sensitive to A. fumigatus were able to degranulate rat peritoneal mast cells. In additon, there was an increase in the activity of the transcription factor NF-κB in RBL-2H3 cells, and morphological changes were observed in these cells once cross-linking was produced. These findings were not found in horses not sensitive to A. fumigatus and healthy horses. These bioassays demonstrate the ability of reaginic antibodies to stimulate mast cells and indicate that these antibodies could be involved in the immunological mechanisms leading to RAO.

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Membranoproliferative glomerulonephritis was observed in a seven-month-old male cocker spaniel dog. The clinical, microbiological, biochemical, radiographic and ultrasonographic examinations ruled out neoplasia, congenital disease and infectious disease. The anamnesis revealed that the owner had vaccinated the dog seven times, one vaccination per month, without veterinarian supervision. In both kidneys, severe thickening of the glomerular capillary walls was observed. Electron microscope examination revealed a large number of electron-dense deposits that were primarily in the glomerular subendothelial spaces and the basal membrane, which is compatible with antigen-antibody complexes. The immunohistochemical examination revealed that the antigen present in the glomeruli corresponded with the antigen present in the vaccine. We report a type III hypersensitivity nephropathy in a young dog, which was possibly caused by over-vaccination.

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Most conifer species occur in large continuous populations, but radiata pine, Pinus radiata, occurs only in five disjunctive natural populations in California and Mexico. The Mexican island populations were presumably colonized from the mainland millions of years ago. According to Axelrod (1981), the mainland populations are relicts of an earlier much wider distribution, reduced some 8,000 years ago, whereas according to Millar (1997, 2000), the patchy metapopulation-like structure is typical of the long-term population demography of the species. We used 19 highly polymorphic microsatellite loci to describe population structure and to search for signs of the dynamics of population demography over space and time. Frequencies of null alleles at microsatellite loci were estimated using an approach based on the probability of identity by descent. Microsatellite genetic diversities were high in all populations [expected heterozygosity (H(e)) = 0.68-0.77], but the island populations had significantly lower estimates. Variation between loci in genetic differentiation (F(ST)) was high, but no locus deviated statistically significantly from the rest at an experiment wide level of 0.05. Thus, all loci were included in subsequent analysis. The average differentiation was measured as F(ST) = 0.14 (SD 0.012), comparable with earlier allozyme results. The island populations were more diverged from the other populations and from an inferred common ancestral gene pool than the mainland ones. All populations showed a deficiency of expected heterozygosity given the number of alleles, the mainland populations more so than the island ones. The results thus do not support a recent important contraction in the mainland range of radiata pine.

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La meta sanitaria del Gobierno de Chile para la década comprendida entre los años del 2000 al 2010, ha puesto todos sus esfuerzos en mejorar la salud de los chilenos, prolongando los años de vida saludable y reduciendo las desigualdades en el acceso a ésta, en la población de distinto nivel socioeconómico. Es decir, los objetivos en salud están encaminados a la promoción de la salud y a la prevención de la enfermedad. El presente artículo describe el modelo educativo y la estrategia pedagógica utilizada en la Carrera de Terapia Ocupacional de la Universidad de Playa Ancha de Valparaíso, Chile, para implementar la capacitación de los estudiantes en el desempeño profesional en el nivel primario de atención en salud. La formación en esta área de la disciplina culmina con el desarrollo y ejecución de un Proyecto de Intervención, acorde con los objetivos del Plan Nacional del Gobierno de Chile, en la Comunidad. Es por esta razón que, a modo de ejemplo, se presenta un Proyecto Comunitario ejecutado el año 2004, en la ciudad de Valparaíso, Chile, por estudiantes de 4º año de la carrera, en el contexto de la asignatura Práctica Comunitaria.

The sanitary goal for the Chilean Government for the decade of 2000 - 2010 is to make the biggest effort to improve the health of the chilean people, prolonging their years into healthy ones and reducing the inequality in the access to it in the population of different economic and social levels. It means, the goals in health are directed to promote health and to prevent illnesses. In this context it’s shown that the educational model and the pedagogic strategy used in the professional formation of occupational therapy in the University of Playa Ancha in Valparaiso, Chile to implement the preparation of the students in the professional development in this primary level of health service. The formation in this area of such discipline culminates with the development and the fulfillment of a project of intervention, agreed with the goals of the national plan of the Chilean Government in the community. For this reason, and as an example, it was presented a communitary project achieved in the year 2004 in the city of Valparaiso, Chile, by students of the 4tth. Year of the professional formation, in the context of the subject communitary practice.

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Analiza el estudio realizado en el Servicio de Nefrología del Hospital Dr. Teodoro Maldonado Carbo, durante 1995, analiza 67 pacientes con insuficiencia renal crónica, que concurrieron para efectuarse hemodiálisis, observándose que el 100xciento desarrolló complicaciones a dicha terapia. El 75xciento fueron de sexo masculino y la mayor cantidad de casos 18 (27xciento) estaba en edades entre los 31 y 40 años. $3 de los 67 pacientes (64xciento) eran procedentes de la Provicnia del Guayas, 22 pacientes (33xciento) inició su sintomatología entre los 21 a 30 años, y la hemodiálisis cuando cursaban 51 años o más, con una PA diastólica entre 85 y 100mmHg (78xciento). Durante la terapéutica fallecieron 10 pacientes entre los 3 a5 años de iniciada su enfermedad (40xciento), en su mayoría (60xciento) de más de 51 años; la complicación más frecuente fue calambres (44xciento), y se confirmó la rareza de la embolia gaseosa...

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The evolution of total amino acid (TAA) variables and the ratio non-essential amino acids/essential amino acids (NE/E) in plasma and red blood cells, and the respective erythrocytic/plasma (E/P) ratios were studied in 12 children of both sexes, between 8 and 60 months old, who had had intercurrent infections during the nutritional from an intense protein-energy denutrition. Intercurrent infections during the nutritional recovery period are manifested by an increased NE/E ratio and its further decrease whenever infection is controlled, a fact which proves the prognostic value of this indicator. The E/P variable for NE/E is more sensitive than plasma or intraerythrocytic variables in the follow up and control of infection since it gradually increases despite the process is controlled. Erythrocytic TAA concentration also increases during the infection period though the increase is not as marked as that of NE/E ratio, and also it is more sensitive than plasma TAA concentration. It is stressed the higher usefulness of erythrocytic variables when compared to plasma variables in the detection of early changes of nubritional balance.

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