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1.
Acta sci. vet. (Impr.) ; 50(suppl.1): Pub.764-4 jan. 2022. ilus
Artigo em Português | VETINDEX | ID: biblio-1458572

Resumo

Background: Canine transmissible venereal tumor (TVT) is one of the most common canine neoplasms in Brazil. Lesions develop mainly in the genital tissue and less frequently in other areas, in the extragenital form. Metastasis is rare, and the disease progression depends on the patient’s immune status. The treatment of choice is chemotherapy with vincristine sulfate, considered an effective and safe modality. The present work describes the first case of extragenital TVT in the larynx with pulmonary metastasis at the time of diagnosis. Case: An approximately 4-month-old mixed-breed bitch was attended manifesting acute clinical respiratory signs. The patient had been rescued from the street 2 months beforehand. Physical examination revealed pale mucous membranes and crackling pulmonary auscultation. Thoracic radiography was performed in 3 projections, showing multiple nodules in the lung parenchyma, followed by cytopathological examination using fine needle puncture guided by thoracic ultrasound, confirming the diagnosis of TVT. Considering the cytological finding and the absence of primary tumor lesions in the genital, oral, cutaneous or nasal regions, endoscopy was performed in order to locate a possible primary focus. The exam revealed a small erythematous tumor with smooth and regular surface, measuring approximately 2.5 cm, located in the larynx, between the arytenoid cartilages. Chemotherapy was performed with vincristine sulfate with radiographic follow-up throughout the treatment. Full remission of the pulmonary and laryngeal nodules was achieved at the end of the protocol. The animal remained in complete remission for a period of 2 years. Discussion: TVT is more frequently observed in animals of active reproductive age, and rarely in animals under 1 year of age, as in the case...


Assuntos
Feminino , Animais , Cães , Metástase Neoplásica , Neoplasias Laríngeas/veterinária , Neoplasias Pulmonares/secundário , Neoplasias Pulmonares/veterinária , Tumores Venéreos Veterinários/diagnóstico , Tumores Venéreos Veterinários/tratamento farmacológico , Vincristina/uso terapêutico
2.
Acta sci. vet. (Impr.) ; 48(suppl.1): Pub.492-4 jan. 2020. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1458319

Resumo

Background: Pituitary pars intermedia (PI) adenoma is a benign adenohypophysis neoplasm, rare in Brazil, which maycompress adjacent structures and lead to dysfunctions of the endocrine organs. The most affected species are equines,particularly aged animals. This neoplastic disease is often associated with Cushing’s syndrome, when the pituitaryadrenocortical axis is affected. However, this neoplasm is seldom associated with clinical blindness. This paper describesa case of pituitary pars intermedia (PI) adenoma which caused blindness in a mare.Case: An emaciated, blind mare that had difficulty finding water and food was referred to “Hospital Veterinário de GrandesAnimais” of “Universidade Federal Rural do Rio de Janeiro”, in Seropédica, state of Rio de Janeiro, Brazil, and later tothe “Setor de Anatomia Patológica” (SAP/UFRRJ) for necropsy. During necropsy it was found that the animal’s pituitarygland consisted of a circumscribed globous mass measuring 3.5x2.5x2.5 cm, symmetrical and well delimited at the sellaturcica. Several organs were collected, fixed in 10% formalin and then processed for histological examination. The brainwas subjected to serial cleavage along the path of the vision organs. All collected tissues were stained with hematoxylinand eosin; the pituitary was stained with Schiff Periodic Acid (PAS) to differentiate neoplastic cells and with Luxol FastBlue to evidence demyelination. Histopathology found that the pars intermedia (PI) was thickened and compressed theneurohypophysis and adenohypophysis. Cells were arranged in a disorganized manner or formed follicles or cysts containing eosinophilic material (colloid), with granules strongly positive after staining with PAS. Proliferated cells werelarge, polyhedral to ovoid, and contained clear basophilic granular material. The nuclei were spherical to ovoid and therewere mild anisocytosis and anisocariasis. Cysts were frequently found in the pars intermedia (PI)...


Assuntos
Feminino , Animais , Adeno-Hipófise Parte Intermédia , Cavalos , Cegueira/veterinária , Hipófise
3.
Acta sci. vet. (Online) ; 48(suppl.1): Pub. 492, Mar. 15, 2020. ilus
Artigo em Inglês | VETINDEX | ID: vti-25600

Resumo

Background: Pituitary pars intermedia (PI) adenoma is a benign adenohypophysis neoplasm, rare in Brazil, which maycompress adjacent structures and lead to dysfunctions of the endocrine organs. The most affected species are equines,particularly aged animals. This neoplastic disease is often associated with Cushings syndrome, when the pituitaryadrenocortical axis is affected. However, this neoplasm is seldom associated with clinical blindness. This paper describesa case of pituitary pars intermedia (PI) adenoma which caused blindness in a mare.Case: An emaciated, blind mare that had difficulty finding water and food was referred to “Hospital Veterinário de GrandesAnimais” of “Universidade Federal Rural do Rio de Janeiro”, in Seropédica, state of Rio de Janeiro, Brazil, and later tothe “Setor de Anatomia Patológica” (SAP/UFRRJ) for necropsy. During necropsy it was found that the animals pituitarygland consisted of a circumscribed globous mass measuring 3.5x2.5x2.5 cm, symmetrical and well delimited at the sellaturcica. Several organs were collected, fixed in 10% formalin and then processed for histological examination. The brainwas subjected to serial cleavage along the path of the vision organs. All collected tissues were stained with hematoxylinand eosin; the pituitary was stained with Schiff Periodic Acid (PAS) to differentiate neoplastic cells and with Luxol FastBlue to evidence demyelination. Histopathology found that the pars intermedia (PI) was thickened and compressed theneurohypophysis and adenohypophysis. Cells were arranged in a disorganized manner or formed follicles or cysts containing eosinophilic material (colloid), with granules strongly positive after staining with PAS. Proliferated cells werelarge, polyhedral to ovoid, and contained clear basophilic granular material. The nuclei were spherical to ovoid and therewere mild anisocytosis and anisocariasis. Cysts were frequently found in the pars intermedia (PI)...(AU)


Assuntos
Animais , Feminino , Cavalos , Cegueira/veterinária , Adeno-Hipófise Parte Intermédia , Hipófise
4.
Acta sci. vet. (Impr.) ; 47(suppl.1): Pub.360-2019. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1458124

Resumo

Background: Congenital cardiac diseases are a common cause of death in puppies. Tricuspid valve dysplasia is characterized by thickening and displacement of the leaflets of the tricuspid valve, agenesis of the valves, and incomplete separationof valve components. Papillary muscles may fuse and display shortened or absent chordae tendineae that contribute totricuspid regurgitation. Diagnostic features of tricuspid valve dysplasia include cardiomegaly with massive right atriumenlargement on thoracic radiography and tricuspid insufficiency on an ultrasound. We aimed to describe clinicopathological findings in a dog (Canis familiaris) with tricuspid dysplasia.Case: We aimed to describe tricuspid valve dysplasia in a dog referred for necropsy at the Anatomical Pathology Sector ofThe Rural Federal University of Rio de Janeiro, Brazil, with a clinical history of abdominal swelling, dyspnea, cyanosis,ascites, and prostration. Echocardiography and abdominal ultrasound revealed right ventricular enlargement, hepatomegaly,and splenomegaly. Examination of the heart showed prominent enlargement, thickening and dilation of the right chambers,thickening of the tricuspid leaflets, and moderately shortened chordae tendineae. The liver was enlarged, with a nutmegpattern, and foci of clotting and fibrin adhesions in the lateral right lobule.Discussion: Epidemiological, clinical, and pathological findings were consistent with tricuspid valve dysplasia. Althoughstructural abnormalities of the tricuspid and mitral valves are well known in fetuses and neonates, congenital and secondary tricuspid malformations are rare in dogs. The survival rate is associated with the severity of heart lesions. Tricuspidvalve dysplasia is mostly observed in large-breed...


Assuntos
Animais , Cães , Cardiopatias Congênitas/veterinária , Valva Tricúspide
5.
Acta sci. vet. (Online) ; 47(suppl.1): Pub. 360, 2019. ilus
Artigo em Inglês | VETINDEX | ID: vti-738859

Resumo

Background: Congenital cardiac diseases are a common cause of death in puppies. Tricuspid valve dysplasia is characterized by thickening and displacement of the leaflets of the tricuspid valve, agenesis of the valves, and incomplete separationof valve components. Papillary muscles may fuse and display shortened or absent chordae tendineae that contribute totricuspid regurgitation. Diagnostic features of tricuspid valve dysplasia include cardiomegaly with massive right atriumenlargement on thoracic radiography and tricuspid insufficiency on an ultrasound. We aimed to describe clinicopathological findings in a dog (Canis familiaris) with tricuspid dysplasia.Case: We aimed to describe tricuspid valve dysplasia in a dog referred for necropsy at the Anatomical Pathology Sector ofThe Rural Federal University of Rio de Janeiro, Brazil, with a clinical history of abdominal swelling, dyspnea, cyanosis,ascites, and prostration. Echocardiography and abdominal ultrasound revealed right ventricular enlargement, hepatomegaly,and splenomegaly. Examination of the heart showed prominent enlargement, thickening and dilation of the right chambers,thickening of the tricuspid leaflets, and moderately shortened chordae tendineae. The liver was enlarged, with a nutmegpattern, and foci of clotting and fibrin adhesions in the lateral right lobule.Discussion: Epidemiological, clinical, and pathological findings were consistent with tricuspid valve dysplasia. Althoughstructural abnormalities of the tricuspid and mitral valves are well known in fetuses and neonates, congenital and secondary tricuspid malformations are rare in dogs. The survival rate is associated with the severity of heart lesions. Tricuspidvalve dysplasia is mostly observed in large-breed...(AU)


Assuntos
Animais , Cães , Valva Tricúspide , Cardiopatias Congênitas/veterinária
6.
Braz. j. vet. res. anim. sci ; 45(4): 320-326, 2008. tab, graf, ilus
Artigo em Português | VETINDEX | ID: vti-5260

Resumo

Vasos responsáveis pelo suprimento sangüíneo do estômago originam-se da artéria celíaca, primeiro ramo da aorta abdominal, localizada na região do hiato aórtico. Assim, dirigem-se à superfície do estômago as artérias gástricas esquerda e direita, as artérias gastroepilóicas esquerda e direita e as artérias gástricas curtas. Apesar de bem conhecidas as origens destes vasos, informações a respeito do comportamento dos mesmos ao atingirem a superfície do estômago ainda são escassas. O fluxo sangüíneo na parede do estômago exerce importante papel nos mecanismos de defesa da mucosa gástrica. Eqüinos em treinamento intensivo apresentam alta freqüência de ocorrência de lesões ulcerativas na mucosa do estômago, tornando as pesquisas sobre vascularização sangüínea deste órgão com grande significado prático na compreensão dos mecanismos relacionados à proteção da mucosa gástrica. O objetivo deste trabalho foi avaliar alguns aspectos relacionados à distribuição arterial na superfície do estômago de eqüinos adultos, sem raça definida e destinados a abate. Utilizaram-se estômagos oriundos de 15 machos e 15 fêmeas. A área superficial do estômago foi mensurada com software de análise de imagens e os dados correlacionados ao número de ramos avaliados. Observou-se reduzida participação da artéria gástrica esquerda na irrigação da curvatura menor do estômago. Estes achados justificam estudos relacionados à particularidades anatômicas da região da curvatura menor do estômago de eqüinos, em trabalhos futuros.(AU)


Vessels responsible for stomach blood supply have their origin in the celyac artery, abdominal aorta first branch, in the aortic hiatus region. Thus, the stomach surface receives the left and right gastric arteries, the left and right gastroepiploic arteries and the breves gastric arteries. Origins of these vessels are well-known, but information about stomach surface arterial distribution are still unknown. Stomach surface blood supply has an important role on gastric mucosa defense mechanisms. Equines submitted to intensive training show high frequency of the ulcerative lesions in the gastric mucosa, with is a promising of applicability for researches on vascularization. The aim of this study was to analyze some aspects of the stomach surface arterial distribution, of the mixed breed adults equines destined to slaughter. Equine stomachs of 15 male and 15 female were analyzed. The stomach surface area was measured with images analysis software and the data correlation with number of vessels branch accounted. A low contribution of the left gastric artery to the stomach minor curvature irrigation was observed. These results justify studies related to anatomic particularities of the region of equine stomach minor curvature, in future researches. (AU)


Assuntos
Animais , Artéria Gastroepiploica/anatomia & histologia , Vasos Sanguíneos/anatomia & histologia , Equidae
7.
Arq. ciênc. vet. zool. UNIPAR ; 10(2): 101-104, jul-dez. 2007. ilus, tab
Artigo em Português | VETINDEX | ID: vti-3111

Resumo

O coelho é amplamente utilizado como modelo experimental para técnicas cirúrgicas e para estudos de digestibilidade em herbívoros. Apesar disso, descrições acerca do comprimento total do intestino e de seus diferentes segmentos ainda são escassas. O objetivo deste trabalho foi apresentar os valores de comprimento total e segmentar do intestino, com os respectivos percentuais, em 40 coelhos Nova Zelândia. Utilizaram-se cadáveres fixados e conservados em solução de formaldeído a 10%. Não foi observada diferença no comprimento dos diferentes segmentos intestinais relacionadas ao sexo. Houve correlação (r = 0,69) entre o comprimento do animal e o comprimento do intestino. O comprimento total do intestino correspondeu a cerca de 7,5 vezes o comprimento total do corpo dos animais(AU)


The rabbit is widely used as experimental model for surgical techniques and studies of digestibility in herbivores. Nevertheless, descriptions of the total intestine length and its different segments are still scarce. The objective of this research was to present the values of total and segmentary intestinal length, along with their respective percentages, of 40 New Zealand rabbits whose corpses were settled and conserved in a 10 % formaldehyde solution. Differences with respect to the length of different intestine segments related to gender were not observed. There was a correlation (r = 0.69) between the length of the animal and of the intestine. The total intestine length corresponded to about 7.5 times the total length of the body of the animals(AU)


El conejo es ampliamente utilizado como modelo experimental para técnicas quirúrgicas y para estudios de digestibilidad en herbívoros. A pesar de eso, descripciones sobre la longitud total del intestino y de sus diferentes segmentos aún son escasas. El objetivo de esta investigación fue presentar los valores de la longitud total y segmentar del intestino, com los respectivos porcentuales, en 40 conejos Nueva Zelanda. Se utilizaron cadáveres fijados y conservados en solución de formol 10%. No fue observada diferencia en la longitud de los diferentes segmentos intestinales relacionados al sexo. Hubo correlación (r = 0.69) entre la longitud del animal y la longitud del intestino. La longitud total del intestino correspondió cerca de 7,5 veces la longitud total del cuerpo de los animales(AU)


Assuntos
Animais , Intestinos/anatomia & histologia , Modelos Animais , Coelhos
8.
Braz. j. vet. res. anim. sci ; 43(4): 526-536, 2006. tab, ilus, graf
Artigo em Inglês | VETINDEX | ID: vti-5669

Resumo

Nutritional manipulation of the rumen wall volatile fatty acid absorption capacity can be a strategy to control ruminal acidosis in dairy cows. Aiming to induce morphological rumen wall variation through diet and to establish efficient papillae morphological markers 2 experiments were performed. In experiment 1, seven rumen-cannulated cows were fed with concentrate 1 or 4 times a day for 19 days followed by fasting for 72 hours. Ruminal papillae were collected on days, 0, 4, 12 and 19 of the treatment period, and 24, 48 and 72 hours after onset of fasting which was able to induce papilar involution. Lower concentrate feeding frequency was associated to insulin increasing over time (P=0,02) and higher (P=0,03) mitotic index (MI), but it did not affect other morphological parameters. In experiment 2, two non-simultaneous trials with 3 rumen-cannulated ovines in each, were conducted and animals were fasted abruptly for 72 hours after feeding. Papillae were collected at the end of the feeding period and at the end of the 72 hour fasting period. MI was higher in the feeding period than the in fasting period (P<0,01), but other morphological parameters were not able to respond to nutritional variation. Among the morphologic markers studied MI seems to be the best variable for evaluation of the rumen epithelium morphologic response to feeding plans. Frequency of concentrate feeding may be used to regulate rumen papillae morphology.(AU)


A manipulação nutricional da capacidade de absorção de ácidos graxos voláteis pela parede do rúmen pode ser uma estratégia para controlar acidose em vacas leiteiras. Objetivando induzir variação morfológica da parede do rúmen através da dieta e estabelecer marcadores morfológicos eficientes para epitélio ruminal, dois experimentos foram relizados. No experimento um, sete vacas com cânula ruminal foram alimentadas com concentrado uma ou quatro vezes ao dia por 19 dias seguidos por 72 horas de jejum. Papilas ruminais foram coletadas nos dias zero, quatro, 12 e 19 do período de tratamento e 24, 48 e 72 horas após o início do período de jejum. Baixa freqüência de alimentação concentrada foi associada a um aumento de insulina plasmática através do tempo (P=0,02) e a um maior (P=0,03) índice mitótico (IM), mas não afetou outros parâmetros morfológicos. No experimento dois, foram realizados dois ensaios não-simultâneos com três ovinos canulados no rúmen, os quais foram submetidos abruptamente a 72 horas de jejum. Papilas ruminais foram coletadas no final do período de alimentação e no final do jejum. O IM foi mais alto no período de alimentação do que no período de jejum (P<0,01), mas outros parâmetros morfológicos não foram capazes de responder à variação nutricional. Entres os marcadores morfológicos estudados o IM parece ser a melhor variável para avaliação da resposta morfológica do epitélio ao plano alimentar. A freqüência de alimentação concentrada pode ser usada para regular a morfologia das papilas ruminais.(AU)


Assuntos
Papilas Gustativas/crescimento & desenvolvimento , Rúmen , Rúmen/crescimento & desenvolvimento , Papilas Gustativas/anatomia & histologia , Índice Mitótico/veterinária , Insulina/efeitos adversos , Bovinos , Cabras
9.
Semina ciênc. agrar ; 29(1): 185-188, 2008.
Artigo em Português | LILACS-Express | VETINDEX | ID: biblio-1433243

Resumo

The presence of the multiple renal artery in dogs, supplying the left kidney, has been reported in 12-15%. New surgery technics in the urogenital tract and the utilization of model for renal transplantation are of clinical significance when considering surgery of that kidney. Courses of anatomy directed veterinary medicine and animal anatomy for students of courses of graduation in the areas of agrarian and biological sciences, use anatomical material proceeding from domestic animals in considerable volume. The use of the material of the laboratories of anatomy for studies of frequency of anatomical variations constitutes way of together contribution to the applied areas, such as the surgery and the clinic. The objective of this report is to presentation of the left multiple renal artery case, originating from the ventral portion of the aorta, in female dog cadaver, with two months, formalin-preserved at 10% and with latex colored vascular injected.


A presença de artéria renal múltipla em cães ocorre geralmente do lado esquerdo, em uma freqüência de 12 a 15 %. O avanço de técnicas cirúrgicas no trato urogenital e a utilização de modelos para transplantes renais tornam importante o conhecimento das variações possíveis no que se refere à vascularização dos rins. Cursos de anatomia veterinária e anatomia animal direcionados para estudantes de cursos de graduação nas áreas de ciências agrárias e biológicas, utilizam material anatômico proveniente de animais domésticos em volume considerável. A utilização do acervo dos laboratórios de anatomia para estudos de freqüência de variações anatômicas constitui meio de contribuição junto às áreas aplicadas, tais como a cirurgia e a clínica. O objetivo deste relato é apresentar um caso de artéria renal esquerda dupla, com origem na porção ventral da aorta, em cadáver de cão sem raça definida, com cerca de dois meses de idade, preservado em solução de formol a 10% e com injeção vascular de látex corado.

10.
Semina Ci. agr. ; 29(1): 185-188, 2008.
Artigo em Português | VETINDEX | ID: vti-763064

Resumo

The presence of the multiple renal artery in dogs, supplying the left kidney, has been reported in 12-15%. New surgery technics in the urogenital tract and the utilization of model for renal transplantation are of clinical significance when considering surgery of that kidney. Courses of anatomy directed veterinary medicine and animal anatomy for students of courses of graduation in the areas of agrarian and biological sciences, use anatomical material proceeding from domestic animals in considerable volume. The use of the material of the laboratories of anatomy for studies of frequency of anatomical variations constitutes way of together contribution to the applied areas, such as the surgery and the clinic. The objective of this report is to presentation of the left multiple renal artery case, originating from the ventral portion of the aorta, in female dog cadaver, with two months, formalin-preserved at 10% and with latex colored vascular injected.


A presença de artéria renal múltipla em cães ocorre geralmente do lado esquerdo, em uma freqûência de 12 a 15 %. O avanço de técnicas cirúrgicas no trato urogenital e a utilização de modelos para transplantes renais tornam importante o conhecimento das variações possíveis no que se refere à vascularização dos rins. Cursos de anatomia veterinária e anatomia animal direcionados para estudantes de cursos de graduação nas áreas de ciências agrárias e biológicas, utilizam material anatômico proveniente de animais domésticos em volume considerável. A utilização do acervo dos laboratórios de anatomia para estudos de freqûência de variações anatômicas constitui meio de contribuição junto às áreas aplicadas, tais como a cirurgia e a clínica. O objetivo deste relato é apresentar um caso de artéria renal esquerda dupla, com origem na porção ventral da aorta, em cadáver de cão sem raça definida, com cerca de dois meses de idade, preservado em solução de formol a 10% e com injeção vascular de látex corado.

11.
Rev. bras. ciênc. vet ; 3(2): 55-57, mai./ago. 1996. il.
Artigo em Português | LILACS, VETINDEX | ID: biblio-1411719

Resumo

Com o objetivo de se obterem maiores informações sobre parâmetros relativos à fase ninfal do Amblyomma cajennense, foram realizadas 28 infestações com ninfas de 1 a 12 dias de idade em 20 coelhos de ambos os sexos e com pelagem uniforme nas cores branca ou preta. A fase não parasitária foi acompanhada sob condições controladas de laboratório (temperatura de 27°, umidade relativa do ar superior a 70% e 12 h de fotofase). Foram utilizadas 21.182 neoninfas, recolhendo-se 11.319 metaninfas, resultando em uma eficiência de infestação de 53,44%. O período de ingurgitamento ninfal oscilou entre 3 e 5 dias com uma maior quantidade de ninfas levando 5 dias para completar o ingurgitamento. O tempo transcorrido entre o desprendimento da metaninfa e o término da ecdise ninfa/adulto oscilou entre 13 e 14 dias, com média de 13,43 ± 0,50 dias. Esse período não sofreu influência do sexo nem da cor da pelagem do coelho utilizado para ingurgitamento ninfal. Do total de metaninfas recolhidas, 95% realizaram ecdise completa, obtendo-se cerca de 10.700 adultos jovens, machos e fêmeas na proporção de 1:1.


In an attempt to obtain more information on the parameters of the nymphal phase of Amblyomma cajennense, 28 infestations were conducted with 1 to 12 day nymphs in 20 rabbits of both sexes and uniform white or black calor. Non-parasitic phase was followed under controlled laboratory conditions (27°C temperatura, 70% relative air humidity, and 12 hr photophase exposition). 21,182 neonymphs were used, out of which 11,319 metanymphs were collected, which accounted for and infestation efficiency of 53.44%. The period of nymphal ingurgitation ranged from 3 to 5 days, with a higher number of nymphs taking 5 days to complete ingurgitation. The time lapsed between metanymph loosening and completion of the ecdisis nymph/adult ranged from 13 to 14 days, with an average of 13.43 ± 0.50 days. This period was not influenced neither by sex nor by hair colar of rabbit used for nymphal ingurgitation. Out of the total of collected metanymphs, 95% had complete ecdisis, being obtained approximately 10,700 young adults, male and female, on a 1:1 rate.


Assuntos
Animais , Coelhos/parasitologia , Infestações por Carrapato/veterinária , Carrapatos , Carga Parasitária/veterinária , Amblyomma , Ninfa/parasitologia
12.
Rev. bras. ciênc. vet ; 4(1): 5-8, jan./abr. 1997. il.
Artigo em Português | LILACS, VETINDEX | ID: biblio-1413193

Resumo

Objetivando maiores informações sobre as fases parasitária e não parasitária do Amblyomma cajennense; foram coletadas 473 fêmeas ingurgitadas provenientes de eqüinos. As fêmeas ingurgitadas pesavam, em média, 601,96 ± 161 ,01 mg e realizaram posturas entre 100 e 444 mg, com média de 286,36 ± 91 ,85 mg. A fase não parasitária foi avaliada sob condições controladas de laboratório (temperatura de 27°C, umidade relativa do ar superior a 70% e 12 h de fotofase). Para cada 1g de fêmeas ingurgitadas correponderam 507,88 ± 88,61 mg de postura. O período de pré-oviposição oscilou entre 4 e 7 dias, com média de 5,30 ± 1,02 dias; a incubação dos ovos foi realizada em média em 33,04 ± 1,69 dias e o período de pré-eclosão foi de 37,94 ± 1,48 dias. A fase parasitária foi acompanhada a partir de infestações experimentais em coelhos, utilizando-se larvas de 3 a 18 dias de idade, provenientes das posturas das fêmeas coletadas. O ingurgitamento larval foi realizado entre 4 e 6 dias, com média de 5 dias. O período compreendido entre o desprendimento da metalarva e o término da ecdise larva/ninfa foi de 11 ,29 ± 1,19 dias e não foi afetado nem pelo sexo nem pela cor da pelagem do coelho utilizado para ingurgitamento larval. Do total de metalarvas obtidas, 95% completaram a ecdise.


In an attempt to obtain further information on both parasitic and non-parasitic phases of Amblyomma cajennense, 473 engorged te males from horses were collected. Females weighed 601.96 ± 161.01 mg on the average and made oviposition between 100 and 444 mg, with an average of 286.36 ± 91.85 mg. Non-parasitic phase was assessed under laboratory conditions (27°C temperatura, relativa air humidity above 70% and 12 hr photophase exposition). For 1g females there was a correspondence of 507.88 ± 88.61 mg oviposition. Preoviposition period ranged from 4 to 7 days, with an average of 5.30 ± 1.02 days; egg incubation was made in 33.04 ± 1.69 days on the average, and the pre-eclosion period was 37.94 ± 1.48 days. Parasitic phase was followed on the basis of experimental infestations in rabbits, using 3 to 18 day larvae from the oviposition of collected females. Larval ingurgitation was observed between 4 and 6 days with an average of 5 days. The period extending between loosening of metalarva and completion of larva/nymph ecdisis was 11.29 ± 1.19. This period was not affected by sex or hair colar of rabbit used for larvae ingurgitation. Out of the total of metalarvae obtained, 95% completed ecdisis.


Assuntos
Animais , Coelhos/parasitologia , Infestações por Carrapato/veterinária , Carrapatos/crescimento & desenvolvimento , Carga Parasitária/veterinária , Amblyomma/parasitologia , Larva/parasitologia
13.
São Paulo; s.n; 09/12/2005. 101 p.
Tese em Português | VETTESES | ID: vtt-5173

Resumo

Dentre os mecanismos de defesa da mucosa do estômago, o fluxo sangüíneo é citado como responsável por suprir a mucosa com oxigênio e nutrientes, necessários à manutenção da integridade da mesma. O delineamento de experimentos voltados à análise do fluxo sangüíneo na mucosa do estômago de eqüinos requer informações de caráter macroscópico e microscópico referentes à vascularização do órgão. O objetivo deste trabalho foi contribuir com a definição de parâmetros macroscópicos e microscópicos da vascularização sangüínea do estômago de eqüinos. Utilizaram-se 30 estômagos de eqüinos, 15 machos e 15 fêmeas, adultos, sem raça definida e destinados a abate. A divisão do estômago em quadrantes foi utilizada com o objetivo de facilitar a visualização dos diferentes arranjos arteriais encontrados. Avaliou-se o comportamento da artéria gástrica esquerda (AGE), após injeção de látex corado, e também no estado in natura. Foram observados aspectos quantitativos dos ramos das AGE, artéria gástrica direita (AGD), artérias gastroepiploicas esquerda (AGEE) e direita (AGED) e artérias gástricas curtas (AGC). Verificou-se a relação entre número de ramos das AGE e AGC com a área de superfície do estômago, mensurada com software de análise de imagens. Ao exame microscópico foram realizadas mensurações do percentual de vascularização do epitélio aglandular nas regiões das curvaturas maior e menor do estômago. Dentre todas as variáveis analisadas, destacou-se a baixa freqüência de ramificação da AGE para a região da curvatura menor do estômago. O ramo visceral da AGE contribuiu com vasos para a curvatura menor em 26,66% dos casos e o ramo parietal contribuiu com ramos para a mesma região em apenas 20% dos casos. Com base nos resultados obtidos, sugere-se o estudo de particularidades anatômicas da região da curvatura menor do estômago de eqüinos, em pesquisas futuras


Among the gastric mucous defense mechanisms, the blood flow is cited as responsible for supplying the mucous with oxygen and nutrients, necessary for the maintenance of its integrity. The delineation of experiments related to blood flow analysis in gastric mucous requires macroscopic and microscopic information about stomach vascularization. The aim of this research is to contribute with definitions of macroscopic and microscopic parameters of the equine stomach blood vascularization. Thirty equine stomachs of mixed breed, male or female, all adults and destined to slaughter, were used. The stomach division in quadrants was used for easier visualization of the different artery arrangements found. The left gastric artery (LGA) behavior was evaluated after injection with colored latex and also in natura state. Quantitative aspects of the LGA branches, right gastric artery (RGA), left gastroepiploic artery (LGEA), right gastroepiploic artery (RGEA) and breves gastric arteries (BGA) were evaluated. The relation between the number of LGA and BGA branches and the stomach surface area measured with image analysis software, were taken. Measurements of the vascularization percent of the nonglandular epithelium were taken in major and minor curvatures of the stomach. Among all the analyzed variables, the low occurrence of LGA branch in the minor stomach curvature was emphasized. The LGA visceral branch contributed with vessels for the minor curvature at 26,66% of cases and the parietal branch contributed with branches for this same region at just 20% of cases. Based on theses results, is suggested more studies about anatomical particularities in minor curvature of the equine stomach, in subsequent researches

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