PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

ABSTRACT.- Moraes L.B., Osório F.S., Salle F.O., Souza G.F., Moraes H.L.S., Fallavena L.C.B., Nascimento V.P., Santos L.R. & Salle C.T.P. 2010. Evaluation of follicular lymphoid depletion in the Bursa of Fabricius: An alternative methodology using digital image analysis and artificial neural networks. Pesquisa Veterinária Brasileira 30(4):340-344. Departamento de Medicina Animal, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, Porto Alegre, RS 91540-000, Brazil. E-mail: lucasbmoraes@gmail.com Fifty Bursa of Fabricius (BF) were examined by conventional optical microscopy and digital images were acquired and processed using Matlab® 6.5 software. The Artificial Neuronal Network (ANN) was generated using Neuroshell® Classifier software and the optical and digital data were compared. The ANN was able to make a comparable classification of digital and optical scores. The use of ANN was able to classify correctly the majority of the follicles, reaching sensibility and specificity of 89% and 96%, respectively. When the follicles were scored and grouped in a binary fashion the sensibility increased to 90% and obtained the maximum value for the specificity of 92%. These results demonstrate that the use of digital image analysis and ANN is a useful tool for the pathological classification of the BF lymphoid depletion. In addition it provides objective results that allow measuring the dimension of the error in the diagnosis and classification therefore making comparison between databases feasible.

• Digital image analysis bursa of Fabricius artificial neuronal network follicular lymphoid depletion Gumboro bursa de Fabricius rede neural artificial depleção linfóide folicular

Abstract in Portuguese:

RESUMO.- Moraes L.B., Osório F.S., Salle F.O., Souza G.F., Moraes H.L.S., Fallavena L.C.B., Nascimento V.P., Santos L.R. & Salle C.T.P. 2010. Evaluation of follicular lymphoid depletion in the Bursa of Fabricius: An alternative methodology using digital image analysis and artificial neural networks. Pesquisa Veterinária Brasileira 30(4):340-344. Departamento de Medicina Animal, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 8824, Porto Alegre, RS 91540-000, Brazil. E-mail: lucasbmoraes@gmail.com Cinquenta Bursa de Fabrícius (BF) foram examinadas através de microscopia óptica convencional e imagens digitais foram obtidas e processadas através do software Matlab® 6.5. Redes Neurais Artificiais (ANN) foram geradas com a utilização do software Neuroshell® Classifier, e os dados das análises óptica e digital foram comparados. A ANN classificou corretamente a maioria dos folículos, atingindo sensibilidade e especificidade de 89% e 96%, respectivamente. Quando os folículos foram agrupados de forma binária houve um aumento da sensibilidade para 90% e obteve-se um valor máximo para a especificidade de 92%. Estes resultados demonstram que o uso da análise digital de imagem associada à ANN é uma ferramenta bastante útil para a classificação patológica da depleção linfóide da BF. Além disso, fornece resultados objetivos que permitem medir a dimensão do erro classificatório, tornando possível a comparação entre distintos bancos de dados.

Abstract in English:

ABSTRACT.- Fernandez D.S., Ferraz R.H.S., Melo A.P.F., Rodrigues R.F. & Souza W.M. 2010. [Histological analysis of urethral glands of the capybara (Hydrochoerus hydrochaeris).] Análise histológica das glândulas uretrais da capivara (Hydrochoerus hydrochaeris). Pesquisa Veterinária Brasileira 30(4):373-377. Curso de Medicina Veterinária, Universidade de Rio Preto (Unirp), Centro Universitário de Rio Preto, Rua Gabriel Yvette Atique 45, São José do Rio Preto, SP 15025-400, Brasil. E-mail: alanmelo@unirpnet.com.br To perform a microscopic study of the glands attached to the male urethra, we used two adult capybaras (Hydrochoerus hydrocaeris) from which fragments of the urethral glands were collected, immersed in Bouin’s fixative solution, washed thoroughly with 70% to absolute alcohol, submitted to routine histological techniques and stained with hematoxylin/eosin and Masson’s trichromic method. The morphological findings were: Vas deferens has a thickening of the wall without granular epithelium and with unchanged lumen; the vesicular gland has a secretory epithelium of pseudostratified columnar type; the prostate gland has a high and ramified mucous membrane covered with pseudostratified cylindrical epithelium. Male capybaras have vesicular, prostate as urethral glands. In the material examined, no secretory epithelium corresponding to bulbourethral glands was identified; morphologically it resembles to the other histricomorphs.

• Urethral glands capybara Hydrochoerus hydrochaeris lândulas uretrais capivaras

Abstract in Portuguese:

RESUMO.- Fernandez D.S., Ferraz R.H.S., Melo A.P.F., Rodrigues R.F. & Souza W.M. 2010. [Histological analysis of urethral glands of the capybara (Hydrochoerus hydrochaeris).] Análise histológica das glândulas uretrais da capivara (Hydrochoerus hydrochaeris). Pesquisa Veterinária Brasileira 30(4):373-377. Curso de Medicina Veterinária, Universidade de Rio Preto (Unirp), Centro Universitário de Rio Preto, Rua Gabriel Yvette Atique 45, São José do Rio Preto, SP 15025-400, Brasil. E-mail: alanmelo@unirpnet.com.br Para realização do estudo microscópico das glândulas anexas à uretra masculina, foram utilizadas duas capivaras (Hydrochoerus hydrocaeris), adultas, das quais foram coletados fragmentos das glândulas genitais acessórias, imersos em solução fixadora de Bouin e lavados cuidadosamente em álcool de 70% ao absoluto. A seguir foram submetidos aos processos histológicos de rotina e corados pelos métodos de Hematoxilina/Eosina e Tricrômico de Masson. Os resultados morfológicos encontrados foram: o ducto deferente possui um espessamento da parede, onde a luz permanece inalterada e sem presença de epitélio granular. A glândula vesicular possui um epitélio secretor do tipo pseudoestratificado colunar. A glândula prostática possui mucosa com pregueamentos altos e ramificados, revestido por epitélio pseudoestratificado cilíndrico. Machos de capivaras possuem glândulas vesiculares e próstata como glândulas uretrais. No material examinado não foi identificado epitélio secretor correspondente a glândula bulbouretral e morfologicamente assemelha-se aos outros histricomorfos.

Abstract in English:

RESUMO.- Néspoli P.B., Gheller V.A., Peixoto P.V., Carvalho A.U., França T.N., Facury Filho E.J., Godoy de Araújo D.K. & Bordin A.I. 2010. [Evaluation of renal biopsy techniques in sheep.] Avaliação de técnicas de biópsia renal em ovinos. Pesquisa Veterinária Brasileira 30(3):260-266. Departamento de Clínica Médica Veterinária, Universidade Federal de Mato Grosso do Sul, Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT 78060-900, Brazil. E-mail: nespoli@ufmt.br Devido à escassez de trabalhos sobre biópsias renais em ovinos foi desenvolvido um estudo comparativo entre três técnicas de biópsia renal nesta espécie. Neste estudo foram utilizadas nove ovelhas (26,64 kg ±4,86) mestiças (Santa Inês) em procedimentos seriados, com intervalos consecutivos de uma semana. Foram avaliados os aspectos clínicos, achados de patologia clínica, o peso das amostras renais, a qualidade histológica, o número de glomérulos e a presença de artefatos no corte histológico da técnica de biópsia percutânea cega, da biópsia guiada por ultrassonografia e do procedimento videolaparoscópico. Não foram observadas alterações hematológicas ou bioquímicas relevantes nos animais submetidos às biópsias renais e as manifestações clínicas detectadas foram leves e transitórias, exceto por um caso de obstrução uretral por coágulo sangüíneo. A técnica percutânea cega foi relacionada à maior ocorrência e gravidade de hematúria, com danos mais graves ao tecido renal e com o único caso de obstrução do fluxo urinário. Na técnica videolaparoscópica, o peso médio das amostras foi superior e a hematúria discreta e transitória. Verificou-se relação direta entre a ocorrência de hematúria grave e a presença de epitélio de transição nas amostras e o número de tentativas utilizado para a obtenção dos fragmentos.

• Renal biopsy

Abstract in Portuguese:

ABSTRACT.- Néspoli P.B., Gheller V.A., Peixoto P.V., Carvalho A.U., França T.N., Facury Filho E.J., Godoy de Araújo D.K. & Bordin A.I. 2010. [Evaluation of renal biopsy techniques in sheep.] Avaliação de técnicas de biópsia renal em ovinos. Pesquisa Veterinária Brasileira 30(3):260-266. Departamento de Clínica Médica Veterinária, Universidade Federal de Mato Grosso do Sul, Av. Fernando Corrêa da Costa s/n, Coxipó, Cuiabá, MT 78060-900, Brazil. E-mail: nespoli@ufmt.br Due to lack of studies about renal biopsies in sheep, a comparative study was performed for three renal biopsy techniques in this species. In this study, nine crossbred (Santa Inês) ewe lamb (26.64 kg ±4,86) were used in serial procedures with one week consecutive intervals. The clinical aspects, clinical pathological findings, renal sample weights, histology quality, number of glomeruli, and the presence of artifacts in the histology slices were evaluated using the techniques of percutaneous blind biopsy, ultrasound guided biopsies and of videolaparoscopic procedure. No relevant hematological or biochemical alterations were observed in the animals subjected to renal biopsies and the clinical manifestations detected were slight and transitory, except for one case of urethral obstruction by blood clot. The blind technique was related to more frequent and severe cases of hematuria, with more severe damage to the renal tissue and to the only case of obstruction of the urinary flow. In the videolaparocopic technique, the average weight of the samples was superior and hematuria was slight and transitory. A direct relation was seen between occurrence of severe hematuria and presence of transitional epithelium in the samples and the number of trials used for obtainment of fragments.

Abstract in English:

RESUMO.- Cortez A.C., Benedicto H.G., Agreste F.R., Clebis N.K. & Bombonato P.P. 2009. [Histomorfometric study of the spleen of healthy and diabetic Wistar rats supplemented or not with vitamin C.] Estudo histomorfométrico do baço de ratos Wistar sadios e diabéticos suplementados ou não pela vitamina C. Pesquisa Veterinária Brasileira 29(10):834-840. Departamento de Morfologia, Instituto Biomédico, Universidade Federal Fluminense, Rua Professor Hernani Pires de Mello 101, Niterói, RJ 24210-130, Brazil. E-mail: hill@vm.uff.br O objetivo deste trabalho foi de analisar morfometricamente fragmentos histológicos do baço de animais normais e diabéticos, comparando os resultados encontrados e relacionando-os ao sexo e a suplementação da vitamina C. Foram utilizados 32 ratos Wistar, os quais foram analisados número de vasos, o número de folículos germinativos (polpa branca) e o diâmetro dos vasos de cada animal. As análises histológicas e morfometricas foram feitas em amostras de 5µm de espessura demonstrando que: na quantidade de folículos germinativos, observamos resultados comparando, independente do sexo, animais controles suplementados com vitamina C e controles não suplementados (p£”0,05; F=0,1452); na quantidade de vasos, observamos resultados comparando, fêmeas diabéticas suplementadas pela vitamina C e fêmeas diabéticas não suplementadas (pd”0,05; F=6.8893); e no diâmetro dos vasos, observamos resultados comparando fêmeas, tanto no grupo controle quanto ao grupo diabético, suplementadas pela vitamina C quando comparadas às fêmeas não suplementadas pela vitamina C (p<0,05; U=121.50; Z(U)=2.1234) e (p<0,05; F=4.8134). De um modo geral, a indução de diabetess modifica o diâmetro vascular nas fêmeas e que a administração de vitamina C interfere nos dados métricos relativos ao diâmetro vascular somente nas fêmeas.

• Wistar rats Diabetes mellitus Spleen Vitamin C

Abstract in Portuguese:

ABSTRACT.- Cortez A.C., Benedicto H.G., Agreste F.R., Clebis N.K. & Bombonato P.P. 2009. [Histomorfometric study of the spleen of healthy and diabetic Wistar rats supplemented or not with vitamin C.] Estudo histomorfométrico do baço de ratos Wistar sadios e diabéticos suplementados ou não pela vitamina C. Pesquisa Veterinária Brasileira 29(10):834-840. Departamento de Morfologia, Instituto Biomédico, Universidade Federal Fluminense, Rua Professor Hernani Pires de Mello 101, Niterói, RJ 24210-130, Brazil. E-mail: hill@vm.uff.br The objective of this study was to analyze morphometric histological shatters of the spleen of normal and diabetic animals, comparing the joined results and relating them in the sex and the suplementation of vitamin C. Had been used 32 Wistar rats, which had been analyzed: number of vases; the number of germinative folicules (white pulp); and the diameter of the vases of each animal. Histological and morphometric analyses were applied on 5µm thick samples and showed that: in the amount of germinative folicules, we observe resulted comparing, independent of the sex, animals controls supplemented with vitamin C and controls not supplemented (p£0.05; F=0.1452); in the amount of vases, we observe resulted comparing, of diabetic females supplemented by vitamin C when compared with not supplemented (pd”0.05; F=6.8893); and in the diameter of the vases, we observe resulted comparing females, as much in the group has controlled how much to the diabetic group, supplemented with vitamin C when compared with the females not supplemented with vitamin C (p<0.05; U=121.50; Z(U)=2.1234) and (p<0,05; F=4.8134). In a general way, the induction of diabetes modifies the vascular diameter in the females and that the vitamin C administration only intervenes with relative metric data to the vascular diameter in the females.

Abstract in English:

RESUMO.- Monteiro C.M.R., Perri S.H.V., Roberto Gameiro de Carvalho R.G. & Koivisto M.B. 2009. [Histology and morphometry in uterus horns of nulliparous bitches, multiparous ones and bitches treated with contraceptives.] Histologia e morfometria em cornos uterinos de cadelas nulíparas, multíparas e tratadas com contraceptivos. Pesquisa Veterinária Brasileira 29(10):847-851. Departamento de Clínica, Cirurgia e Reprodução Animal, Curso de Medicina Veterinária, Faculdade de Odontologia, Universidade Estadual Paulista, Rua Clóvis Pestana 173, Araçatuba, SP 16065-090, Brazil. E-mail: monteiro@fmva.unesp.br Dados histológicos e morfométricos foram obtidos de útero de cadelas nulíparas (n=6), multíparas (n=6) e de cadelas tratadas com contraceptivo (n=6). Para esse fim foram usadas seis amostras de cornos uterinos, em corte médio, para cada grupo. As mensurações das espessuras da parede uterina, endométrio total, miométrio total, miométrio interno, miométrio externo, estrato vascular e diâmetro das glândulas endometriais normais não foram estatisticamente significantes entre as cadelas multíparas e tratadas, com exceção para a altura do epitélio de glândulas normais. As mensurações das espessuras da parede uterina, endométrio total, miométrio total, miométrio interno, diâmetro das glândulas normais e altura do epitélio glandular foram significantes, comparando cadelas nulíparas com as multíparas e/ou tratadas, com exceção para as espessuras do miométrio externo e estrato vascular. Diante dos resultados obtidos, pode-se concluir que os dados numéricos confirmam que (1) o uso de anticoncepcionais e sucessivas gestações afetam a estrutura uterina em seu total; (2) o miométrio externo e estrato vascular foram as regiões que menos sofreram alterações comparando-se os 3 grupos; (3) as variações morfológicas ocorreram com a mesma intensidade no endométrio e miométrio totais para as cadelas tratadas e multíparas, e (4) a presença de glândulas endometriais dilatadas foi o diferencial encontrado nas cadelas tratadas, pois as mesmas estavam ausentes nas multíparas e nulíparas.

• Morphometry uterine horns endometrium myometrium bitches

Abstract in Portuguese:

ABSTRACT.- Monteiro C.M.R., Perri S.H.V., Roberto Gameiro de Carvalho R.G. & Koivisto M.B. 2009. [Histology and morphometry in uterus horns of nulliparous bitches, multiparous ones and bitches treated with contraceptives.] Histologia e morfometria em cornos uterinos de cadelas nulíparas, multíparas e tratadas com contraceptivos. Pesquisa Veterinária Brasileira 29(10):847-851. Departamento de Clínica, Cirurgia e Reprodução Animal, Curso de Medicina Veterinária, Faculdade de Odontologia, Universidade Estadual Paulista, Rua Clóvis Pestana 173, Araçatuba, SP 16065-090, Brazil. E-mail: monteiro@fmva.unesp.br Histological and morphometric data were obtained from uterus of nulliparous bitches (n=6), multiparous ones (n=6), and bitches treated with contraceptive (n=6). Six samples of uterine horns, cut in average for each group. Measurements of the thickness of the uterine wall, total endometrium, total myometrium, internal myometrium, external myometrium, vascular layer and diameter of normal endometrial glands were not statistically significant between the treated and multiparous bitches, except for the height of the epithelium of normal glands. Measurements of thickness of the uterine wall, total endometrium, total myometrium, myometrium internal diameter and height of the glands of normal glandular epithelium were significant, comparing nulliparous with multiparous bitches and/or treated, except for thickness of the myometrium and vascular outer layer. It can be concluded that (1) the use of contraceptives and successive pregnancies affected uterine structures in its full, (2) the vascular layer and external myometrium were the regions with less variation, (3) morphological changes occurred with the same intensity in the total endometrium and myometrium of treated and multiparous bitches; and (4) the presence of dilated endometrial glands was the difference found in the treated bitches, because they were absent in nulliparous and multiparous ones.

Abstract in English:

ABSTRACT.- Silva C.A.O., Perri S.H.V., Koivisto M.B., Silva A.M., Carvalho R.G. & Monteiro C.M.R. 2009. [Histological and morphometric evaluation of the testes of cats (Felis catus).] Aspectos histológicos e morfométricos dos testículos de gatos domésticos (Felis catus). Pesquisa Veterinária Brasileira 29(4):312-316. Curso de Medicina Veterinária, Faculdade de Odontologia, Universidade Estadual Paulista, Rua Clóvis Pestana 793, Araçatuba, SP 16050-680, Brazil. E-mail: monteiro@fmva.unesp.br This paper deals with a comparative histologic and morphometric study of the testes of domestic cats distributed into two groups: Group 1, cats until 1 year of age, and Group 2, cats over 1 year. It was found that: (1) at 4 months of age the seminiferous tubules were poorly developed, appeared as seminiferous cords without lumen, lined by a low epithelium, and showed undifferentiated Sertoli cells and scarce interstitial tissue; (2) at 5 months the seminiferous tubules began to differentiate with increase in tubular diameter and lumen, the other tubular structures remaining similar to those previous referred; (3) at 6 and 7 months of age spermatocytogenesis began to appear, Leydig cells were large, polyhedral in shape, with vacuolated cytoplasm and clear nuclei, resting on a sparse interstitial tissue with few blood vessels; (4) 1-year-old cats showed testicular histological features of an adult animal, had seminiferous tubules of large diameter and high seminiferous epithelium with small lumen, and Leydig cells of different sizes, with polyhedral shape, vacuolated cytoplasm, clear nuclei and evident nucleoli resting in a sparse interstitial tissue with some blood vessels; (5) in Group 1 the average diameter of the seminiferous tubules was 160.58µm, and 185.94µm in Group 2; (6) the height of the seminiferous epithelium was 49.51µm for Group 1 and 63.29µm for Group 2; (7) the largest measures of the analyzed parameters were found in animals of Group 2, with functional reproductive organs.

• Histology morphometry testes cats

Abstract in Portuguese:

ABSTRACT.- Silva C.A.O., Perri S.H.V., Koivisto M.B., Silva A.M., Carvalho R.G. & Monteiro C.M.R. 2009. [Histological and morphometric evaluation of the testes of cats (Felis catus).] Aspectos histológicos e morfométricos dos testículos de gatos domésticos (Felis catus). Pesquisa Veterinária Brasileira 29(4):312-316. Curso de Medicina Veterinária, Faculdade de Odontologia, Universidade Estadual Paulista, Rua Clóvis Pestana 793, Araçatuba, SP 16050-680, Brazil. E-mail: monteiro@fmva.unesp.br This paper deals with a comparative histologic and morphometric study of the testes of domestic cats distributed into two groups: Group 1, cats until 1 year of age, and Group 2, cats over 1 year. It was found that: (1) at 4 months of age the seminiferous tubules were poorly developed, appeared as seminiferous cords without lumen, lined by a low epithelium, and showed undifferentiated Sertoli cells and scarce interstitial tissue; (2) at 5 months the seminiferous tubules began to differentiate with increase in tubular diameter and lumen, the other tubular structures remaining similar to those previous referred; (3) at 6 and 7 months of age spermatocytogenesis began to appear, Leydig cells were large, polyhedral in shape, with vacuolated cytoplasm and clear nuclei, resting on a sparse interstitial tissue with few blood vessels; (4) 1-year-old cats showed testicular histological features of an adult animal, had seminiferous tubules of large diameter and high seminiferous epithelium with small lumen, and Leydig cells of different sizes, with polyhedral shape, vacuolated cytoplasm, clear nuclei and evident nucleoli resting in a sparse interstitial tissue with some blood vessels; (5) in Group 1 the average diameter of the seminiferous tubules was 160.58µm, and 185.94µm in Group 2; (6) the height of the seminiferous epithelium was 49.51µm for Group 1 and 63.29µm for Group 2; (7) the largest measures of the analyzed parameters were found in animals of Group 2, with functional reproductive organs.

Abstract in English:

ABSTRACT.- Souza T.M., Fighera R.A., Kommers G.D. & Barros C.S.L. 2009. [Histological aspects of canine and feline skin as a tool for dermatopathology.] Aspectos histológicos da pele de cães e gatos como ferramenta para dermatopatologia. Pesquisa Veterinária Brasileira 29(2):177-190. Departamento de Patologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil. E-mail: teitsouza@yahoo.com.br Skin morphology differs among different animal species and most part of our knowledge on the morphology of human skin can not be applied for dogs and cats. Thus, the understanding of the basic morphologic aspects of the skin from different species is an invaluable tool for every professional in the field of veterinary pathology. Furthermore, the ability to recognize the main similarities and main differences in the skin morphology from different anatomical signs within the same animal is fundamental to the practice dermatopathology. This paper reviews the major aspects of the microscopic anatomy of the skin in dogs and cats, aiming to help those veterinary pathologists that are starting in the field of dermatopathology, since only with the knowledge of the peculiarities of this organ it will be possible to apply the diagnostic approach through lesion patterns.

• Morphology histology pathology dermatopathology skin dogs and cats

Abstract in Portuguese:

ABSTRACT.- Souza T.M., Fighera R.A., Kommers G.D. & Barros C.S.L. 2009. [Histological aspects of canine and feline skin as a tool for dermatopathology.] Aspectos histológicos da pele de cães e gatos como ferramenta para dermatopatologia. Pesquisa Veterinária Brasileira 29(2):177-190. Departamento de Patologia, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil. E-mail: teitsouza@yahoo.com.br Skin morphology differs among different animal species and most part of our knowledge on the morphology of human skin can not be applied for dogs and cats. Thus, the understanding of the basic morphologic aspects of the skin from different species is an invaluable tool for every professional in the field of veterinary pathology. Furthermore, the ability to recognize the main similarities and main differences in the skin morphology from different anatomical signs within the same animal is fundamental to the practice dermatopathology. This paper reviews the major aspects of the microscopic anatomy of the skin in dogs and cats, aiming to help those veterinary pathologists that are starting in the field of dermatopathology, since only with the knowledge of the peculiarities of this organ it will be possible to apply the diagnostic approach through lesion patterns.

Abstract in English:

ABSTRACT.- Amarante A.F.T., Rocha R.A. & Bricarello P.A. 2006. Relationship of intestinal histology with the resistance to Trichostrongylus colubriformis infection in three breeds of sheep. Pesquisa Veterinária Brasileira 26(1):43-48. Departamento de Parasitologia, Instituto de Biociências, Universidade Estadual Paulista (Unesp), Cx. Postal 510, Botucatu, SP 18618-000, Brazil. E-mail: amarante@ibb.unesp.br The study was carried out to evaluate the relationship of inflammatory intestinal cells with the resistance to Trichostrongylus colubriformis infections in three breeds of sheep (Santa Ines, Suffolk and Ile de France), naturally infected. Mast cells, eosinophils, and globule leucocytes were enumerated in intestinal mucosa. Histamine concentration was estimated in intestinal tissue samples and the length of male and female specimens were determined. The three breeds of sheep showed similar cellular response in the small intestine mucosa (P>0.05). There was extensive variation among sheep in the parasitological and inflammatory cell variables, even in lambs of the same breed. In general, animals presenting less inflammatory cells had a larger worm burden, higher fecal egg counts, and larger T. colubriformis worms. The inflammatory cells possibly impaired the parasite’s establishment, development, and survival.

• Sheep Trichostrongylus colubriformis resistance mast cells eosinophils

Abstract in Portuguese:

ABSTRACT.- Amarante A.F.T., Rocha R.A. & Bricarello P.A. 2006. Relationship of intestinal histology with the resistance to Trichostrongylus colubriformis infection in three breeds of sheep. Pesquisa Veterinária Brasileira 26(1):43-48. Departamento de Parasitologia, Instituto de Biociências, Universidade Estadual Paulista (Unesp), Cx. Postal 510, Botucatu, SP 18618-000, Brazil. E-mail: amarante@ibb.unesp.br The study was carried out to evaluate the relationship of inflammatory intestinal cells with the resistance to Trichostrongylus colubriformis infections in three breeds of sheep (Santa Ines, Suffolk and Ile de France), naturally infected. Mast cells, eosinophils, and globule leucocytes were enumerated in intestinal mucosa. Histamine concentration was estimated in intestinal tissue samples and the length of male and female specimens were determined. The three breeds of sheep showed similar cellular response in the small intestine mucosa (P>0.05). There was extensive variation among sheep in the parasitological and inflammatory cell variables, even in lambs of the same breed. In general, animals presenting less inflammatory cells had a larger worm burden, higher fecal egg counts, and larger T. colubriformis worms. The inflammatory cells possibly impaired the parasite’s establishment, development, and survival.

Abstract in English:

With the aim of determining possible collagen changes in Cara inchada, investigations of gingiva and interdental periodontium of eight diseased and eight healthy calves were performed. Findings included degeneration and loss of superficial layers of marginal and crevicular epithelia and proliferation of the junctional epithelium into the lamina propria, which was infiltrated mainly by eosinophilic granulocytes. The collagen in affected areas was edematous and collagen I was less dense then the surrounding connective tissue, which resembled that of the control specimens. Osteofibtotic changes were observed in the alveolar bone. Cause and effect relationship between the changes in epithelium, connective tissues and alveolar bone are discussed with reference to allergic reactions, the integrity and metabolism of collagen and osteodystrophia fibrosa. The fact that collagen in non-infiltrated parts displayed normal structural and staining ·properties leads to the conclusion that the collagen changes in Cara inchada are of a secondary nature.

• Periodontal disease Cara inchada cattle histology collagen gingiva periodontium

Abstract in Portuguese:

Foram realizados estudos histológicos da gengiva e do periodôncio interdentário de oito bezerros afetados pela "cara inchada" e de oito outros sadios, a fim de verificar possíveis alterações do colágeno nessa doença. As alterações observadas consistiram em degeneração e perda das camadas superficiais dos epitélios marginais externo e interno da gengiva, bem como invasão da lâmina própria, que estava infiltrada principalmente por granulócitos eosinófilos, pelo epitélio juncional. O colágeno nas áreas afetadas encontrava-se edemaciado, e. o colágeno tipo I estava menos denso que o tecido conjuntivo circunvizinho, lembrando o das espécimes de controle. No osso alveolar foram observadas alterações osteofibróticas. As relações de causa e efeito, entre as alterações no epitélio, tecido conjuntivo e osso alveolar, são discutidas em relação às reações alérgicas, à integridade e ao metabolismo do colágeno e à osteodistrofia fibrosa. O fato de que o colágeno, nas partes não infiltradas, estava normal tanto estruturamente como em relação às propriedades tintoriais, leva a concluir que as alterações do colágeno, na "cara inchada", são de natureza secundária.

• Doença peridentária "cara inchada" bovinos histologia colágeno gengiva periodôncio