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1.
Acta Vet. Brasilica ; 17(1): 44-52, 2023. ilus, tab
Artigo em Inglês | VETINDEX | ID: biblio-1436328

Resumo

The aim of the present study is to describe the skin morphology and morphometry of the giant anteater (M. tridactyla), based on comparative analysis applied to skin segments from central metacarpal torus (palmar pad), dorsal thorax, ventral cervical, ventral abdomen, medial carpal and nasal regions. In order to do so, eight adult specimens of M. tridactyla were used for macroscopic studies and four for microscopic assessments. Microscopy was used to assess fur general features that were macroscopically assessed through visual analysis. Fragments (2.0cm²) were collected from the selected regions for microscopic studies. Samples were fixed on McDowell solution, processed through routine histology techniques and subjected to semi-serial cuts (5 µm). The cuts were stained in HE, Alcian blue and periodic acid Schiff. General morphology of different skin layers was described, as well as their architecture and composition; mesoscopy of the epidermis, dermis and stratum corneum was also carried out. There was difference in skin morphometry between males and females, and between different skin regions in the same animal, based on the statistical evaluation of the recorded values. All epidermis layers were assessed for the selected regions. Dermis encompassed surface and deep layers; it presented sweat and sebaceous glands, as well as hair follicles. Findings also allowed reporting that epidermis components are easily identified given its thickness, and the large amount of sweat glands in it ­ it contrasts its physiological features.(AU)


O objetivo deste estudo foi descrever a morfologia e morfometria da pele do Tamanduá-bandeira (M. tridactyla), mediante a análise comparativa de segmentos cutâneos das regiões central do toro metacarpal (coxim palmar), dorsal do tórax, cervical ventral, ventral do abdome, medial do carpo e nasal. Para tanto, foram utilizados oito exemplares adultos de M. tri-dactyla para o estudo macroscópico, e quatro destes para o estudo microscópico. Macroscopicamente estudou-se, por meio de análise visual, as características gerais do pelo e pelagem. Para o estudo microscópico, foram coletados fragmentos de 2,0 cm2 das áreas selecionadas. As amostras foram fixadas em solução de McDowell, processadas pelas técnicas rotineiras de his-tologia e submetidas a cortes semi-seriados de 5 µm. Os cortes foram corados com HE, azul de Alcian e ácido periódico de Schiff. Descreveu-se a morfologia geral, a arquitetura e a composição das diferentes camadas da pele e ainda realizou-se a mesoscopia da epiderme, derme e estrato córneo. De acordo com a avaliação estatística dos valores obtidos, houve diferença na morfometria cutânea entre machos e fêmeas, e entre as diferentes regiões cutâneas de um mesmo animal. Nas regiões estu-dadas observou-se todas as camadas da epiderme. A derme compôs-se das camadas superficial e profunda, apresentado glân-dulas sudoríferas e sebáceas e folículos pilosos. Dentre os achados também pode-se relatar que os componentes da epiderme são facilmente identificáveis pela sua maior espessura, além da grande quantidade de glândulas sudoríferas presentes, o que contrasta com suas características fisiológicas.(AU)


Assuntos
Animais , Fenômenos Fisiológicos da Pele , Vermilingua/anatomia & histologia
2.
Acta Vet. bras. ; 15(1): 60-65, 2021. ilus
Artigo em Inglês | VETINDEX | ID: vti-31070

Resumo

The giant anteater is one of the species classified as vulnerable to extinction. Burning and being run over are among important causes in the decrease of individuals of this species and a better knowledge of the anatomy of these animals can contribute to the treatment of injured animals and their restoration to the environment. Thus, the objective of this work was to describe aspects of the anatomy of the muscles of the forearm of M. tridactyla. For this purpose, six adult specimens were used, three females and three males. The corpses were fixed with a 10% formaldehyde solution and preserved in vats containing the same solution. The thoracic limbs were dissected by routine dissection techniques. The forearm muscles of M. tridactyla were: brachioradialis; radial carpal extensor; common finger extensor; lateral finger extensor, ulnar carpal extensor; finger extensor I and II; long abductor of finger I; supinator, radial carpal flexor; ulnar flexor of the carpus, superficial flexor of the fingers, deep flexor of the fingers, pronator teres and square pronator, which were innervated by the radial, ulnar and median nerves. These muscles give a large volume to the forearm, are robust and have highly developed tendons, especially those involved with the flexion of the carpus, digits and elbow, actions that are fundamental to your defense habits and search for food.(AU)


O tamanduá-bandeira é uma das espécies classificadas em condição vulnerável à extinção. Queimadas e atropela-mentos estão entre causas importantes na diminuição de indivíduos desta espécie e um melhor conhecimento da anatomia des-tes animais pode contribuir para o tratamento de animais feridos e seu reestabelecimento ao meio ambiente. Assim, oobjetivo deste estudo foi descrever os aspectos da anatomia do antebraço do M. tridactyla. Para tanto, foram utilizados seis exemplares adultos, sendo três fêmeas e três machos. Os cadáveres foram fixados com solução aquosa de aldeído fórmico 10% e preser-vados em cubas contendo a mesma solução. Os membros torácicos foram dissecados pelas técnicas rotineiras de dissecação para evidenciação dos músculos, vasos e nervos da região. Os músculos do antebraço do M. tridactyla foram: braquiorradial; extensor radial do carpo; extensor comum dos dedos; extensor lateral dos dedos, extensor ulnar do carpo; extensor dos dedos I e II; abdutor longo do dedo I; supinador, flexor radial do carpo; flexor ulnar do carpo, flexor superficial dos dedos, flexor profundo dos dedos, pronador redondo e pronador quadrado. Estes músculos foram inervados pelos nervos ulnar e mediano. Juntos estes músculos conferem um grande volume ao antebraço, e suas características apontam para uma poderosa capaci-dade de exercer a flexão do carpo e dos dígitos, e ainda contribuir com os músculos do braço para a flexão do cotovelo, ações estas fundamentais aos seus hábitos de defesa e busca por alimento.(AU)


Assuntos
Animais , Xenarthra/anatomia & histologia , Pontos de Referência Anatômicos/anatomia & histologia , Antebraço/anatomia & histologia
3.
Acta Vet. Brasilica ; 15(1): 60-65, 2021. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1453258

Resumo

The giant anteater is one of the species classified as vulnerable to extinction. Burning and being run over are among important causes in the decrease of individuals of this species and a better knowledge of the anatomy of these animals can contribute to the treatment of injured animals and their restoration to the environment. Thus, the objective of this work was to describe aspects of the anatomy of the muscles of the forearm of M. tridactyla. For this purpose, six adult specimens were used, three females and three males. The corpses were fixed with a 10% formaldehyde solution and preserved in vats containing the same solution. The thoracic limbs were dissected by routine dissection techniques. The forearm muscles of M. tridactyla were: brachioradialis; radial carpal extensor; common finger extensor; lateral finger extensor, ulnar carpal extensor; finger extensor I and II; long abductor of finger I; supinator, radial carpal flexor; ulnar flexor of the carpus, superficial flexor of the fingers, deep flexor of the fingers, pronator teres and square pronator, which were innervated by the radial, ulnar and median nerves. These muscles give a large volume to the forearm, are robust and have highly developed tendons, especially those involved with the flexion of the carpus, digits and elbow, actions that are fundamental to your defense habits and search for food.


O tamanduá-bandeira é uma das espécies classificadas em condição vulnerável à extinção. Queimadas e atropela-mentos estão entre causas importantes na diminuição de indivíduos desta espécie e um melhor conhecimento da anatomia des-tes animais pode contribuir para o tratamento de animais feridos e seu reestabelecimento ao meio ambiente. Assim, oobjetivo deste estudo foi descrever os aspectos da anatomia do antebraço do M. tridactyla. Para tanto, foram utilizados seis exemplares adultos, sendo três fêmeas e três machos. Os cadáveres foram fixados com solução aquosa de aldeído fórmico 10% e preser-vados em cubas contendo a mesma solução. Os membros torácicos foram dissecados pelas técnicas rotineiras de dissecação para evidenciação dos músculos, vasos e nervos da região. Os músculos do antebraço do M. tridactyla foram: braquiorradial; extensor radial do carpo; extensor comum dos dedos; extensor lateral dos dedos, extensor ulnar do carpo; extensor dos dedos I e II; abdutor longo do dedo I; supinador, flexor radial do carpo; flexor ulnar do carpo, flexor superficial dos dedos, flexor profundo dos dedos, pronador redondo e pronador quadrado. Estes músculos foram inervados pelos nervos ulnar e mediano. Juntos estes músculos conferem um grande volume ao antebraço, e suas características apontam para uma poderosa capaci-dade de exercer a flexão do carpo e dos dígitos, e ainda contribuir com os músculos do braço para a flexão do cotovelo, ações estas fundamentais aos seus hábitos de defesa e busca por alimento.


Assuntos
Animais , Antebraço/anatomia & histologia , Pontos de Referência Anatômicos/anatomia & histologia , Xenarthra/anatomia & histologia
4.
Acta sci. vet. (Impr.) ; 48(suppl.1): Pub.584-4 jan. 2020. ilus
Artigo em Inglês | VETINDEX | ID: biblio-1458411

Resumo

Background: Gastric neoplasia is rare, corresponding to less than 1% of cases, with a lower prevalence of those involving smooth muscle tissues. In these cases, clinical signs worsen in the occurrence of pyloric obstruction, leading to clinical manifestations such as chronic emesis. The exeresis of the neoplasm is promoted as a therapeutic measure to reestablish gastrointestinal flow. There partial gastrectomy followed by gastroduodenal anastomosis, using the Billroth I technique, is among the available surgical techniques. The therapeutic success of the Billroth I technique after pylorectomy was reported in a dog with gastric leiomyoma. Case: A 9-year-old male Poodle dog, weighing 9.5 kg, was referred for clinical evaluation with a history of chronic vomiting starting three months ago, progressive weight loss, and melena, previously treated by another Veterinarian as idiopathic gastroenteritis. The physical evaluation of the animal showed a state of normal consciousness, body score 4/9, pale ocular and oral mucous membranes, respiratory rate 20 mpm, heart rate 166 bpm, a rectal temperature of 37.9°C, and dehydration degree of 8.0%. Blood count showed normocytic normochromic anemia and leukocytosis with shift to the right. Radiographic and endoscopic examinations were not noteworthy. Endoscopic biopsy after a histopathological evaluation showed no cellular or tissue atypia. On the other hand, abdominal ultrasound assessment revealed thickening with loss of echotexture and definition of the muscular layer of the gastric wall, pyloric and duodenum region compatible with benign antral muscle hypertrophy and/or pyloric neoplasia. The animal worsened 5 days after the initial treatment, with progressive episodes of emesis and melena, opting for an exploratory laparotomy. A mass of firm consistency measuring approximately 2.5 × 6.0 cm in diameter was found in the pyloric region, opting for a pylorectomy. The excised fragment was sent for histopathological...


Assuntos
Masculino , Animais , Cães , Leiomioma/cirurgia , Leiomioma/terapia , Leiomioma/veterinária , Anastomose Cirúrgica/veterinária , Gastrectomia/veterinária , Gastroenterostomia/métodos , Gastroenterostomia/veterinária
5.
Acta sci. vet. (Online) ; 48(suppl.1): Pub. 584, Dec. 17, 2020. ilus
Artigo em Inglês | VETINDEX | ID: vti-32454

Resumo

Background: Gastric neoplasia is rare, corresponding to less than 1% of cases, with a lower prevalence of those involving smooth muscle tissues. In these cases, clinical signs worsen in the occurrence of pyloric obstruction, leading to clinical manifestations such as chronic emesis. The exeresis of the neoplasm is promoted as a therapeutic measure to reestablish gastrointestinal flow. There partial gastrectomy followed by gastroduodenal anastomosis, using the Billroth I technique, is among the available surgical techniques. The therapeutic success of the Billroth I technique after pylorectomy was reported in a dog with gastric leiomyoma. Case: A 9-year-old male Poodle dog, weighing 9.5 kg, was referred for clinical evaluation with a history of chronic vomiting starting three months ago, progressive weight loss, and melena, previously treated by another Veterinarian as idiopathic gastroenteritis. The physical evaluation of the animal showed a state of normal consciousness, body score 4/9, pale ocular and oral mucous membranes, respiratory rate 20 mpm, heart rate 166 bpm, a rectal temperature of 37.9°C, and dehydration degree of 8.0%. Blood count showed normocytic normochromic anemia and leukocytosis with shift to the right. Radiographic and endoscopic examinations were not noteworthy. Endoscopic biopsy after a histopathological evaluation showed no cellular or tissue atypia. On the other hand, abdominal ultrasound assessment revealed thickening with loss of echotexture and definition of the muscular layer of the gastric wall, pyloric and duodenum region compatible with benign antral muscle hypertrophy and/or pyloric neoplasia. The animal worsened 5 days after the initial treatment, with progressive episodes of emesis and melena, opting for an exploratory laparotomy. A mass of firm consistency measuring approximately 2.5 × 6.0 cm in diameter was found in the pyloric region, opting for a pylorectomy. The excised fragment was sent for histopathological...(AU)


Assuntos
Animais , Masculino , Cães , Leiomioma/cirurgia , Leiomioma/terapia , Leiomioma/veterinária , Gastrectomia/veterinária , Anastomose Cirúrgica/veterinária , Gastroenterostomia/métodos , Gastroenterostomia/veterinária
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