Morphology and biometric of the vesicular and bulbourethralglands in castrated and non-castratedSanta Inesbreed sheep

Introduction: The purpose of this paper is to determine the topography, biometry and light microscopyimage of the vesicular and bulbourethral glands in order to analyze morphologic features of the accessorysexual glands in castrated and non-castrated animals.Materials and Methods:The morphology of theaccessory sexual glands was investigated in 14 adult Santa Inesbreed sheep, weighing 32 kg, on average.Six of them were castrated, and eight, non-castrated. For macroscopic study, the description of these twoglands was carried out, as well as dissection and biometry study. Moreover, weight, length, height andwidth measurements were evaluated. For histological analysis, the vesicular and bulbourethral glands weresampled.Results:The topography of the reproductive glands was similar to bovine species. However, lowermacroscopic measurements (p < 0,05) in the glands of the castrated sheep were evidenced when comparedwith the non-castrated ones. Characteristics such as shape of the glands, composition of the layer mucosa,the lamina propria, muscular, the excretory ducts and the adventitia were determined.Conclusion:Sheepcastration promoted changes in the biometric measures of the glands, which were lower in castrated animals.The morphological and biometric characteristics of the vesicular and bulbourethral glands in sheep weredetermined.

Estrutura, ultraestrutura e morfometria da aorta de paca (Cuniculus paca, Linnaeus, 1766) criada em cativeiro / Structure, ultrastructure and morphometry of the aorta in the paca (Cuniculus paca, Linnaeus, 1766) raised in captivity

Descreveram-se a morfologia, morfometria e ultraestrutura de segmentos das porções torácica e abdominal da aorta de quatro pacas (Cuniculus paca) adultas. Os segmentos aórticos foram analisados à microscopia de luz e à microscopia eletrônica de varredura. Mensuraram-se as espessuras do complexo formado pelas túnicas íntima e média, além da túnica adventícia. Os valores referentes à espessura do complexo formado pelas túnicas íntima e média da aorta torácica cranial foram significativamente maiores (média: 702,19µm) que os valores de outros segmentos aórticos analisados (médias: 354,18µm; 243,55µm). As camadas das paredes do vaso apresentaram variações entre si quanto à estrutura e espessura, supostamente em razão de adaptação à exigência funcional.

The aim of this study was to describe the morphology, morphometry and ultrastructure of segments of thoracic and abdominal aorta portions in four male and female paca (Cuniculus paca). Parts of the segments were examined by light microscopy and part by scanning electron microscopy. Thickness measurements of the tunica intima and media complex and tunica adventitia of the aorta were taken. In all animals the thickness values for the tunica intima and media complex of the cranial thoracic aorta were significantly higher (mean: 702.19µm) when compared to the values of other aortic segments analyzed (means: 354.18µm; 243.55µm). The layers of the vessel walls show variations in structure and thickness, presumably due to an adaptation to functionaldemand.

Morfologia do útero de cutias nulíparas e não nulíparas / Morphology of the uterus of nulliparous and non nulliparous agoutis

Descreveu-se a morfologia do útero de cutias nulíparas e não nulíparas por meio de ovariossalpingoisterectomia. A análise macroscópica do útero foi realizada in loco e na peça retirada. Segmentos das porções proximal, média e distal do órgão foram colhidas, fixadas e preparadas histologicamente, sendo as amostras analisadas à microscopia de luz, e realizada a histomorfometria das camadas uterinas. Topograficamente, o útero localiza-se na região sublombar, caudalmente aos rins, em continuação aos ovários e às tubas uterinas, estendendo-se até à entrada da pelve, onde se posiciona dorsalmente à bexiga. Caracteriza-se como do tipo duplo, embora culmine em apenas um óstio cervical externo. Microscopicamente, a mucosa uterina é formada por variações do epitélio, de cilíndrico a pseudoestratificado, que se apoia em tecido conjuntivo frouxo, onde se observam glândulas endometriais revestidas por epitélio cilíndrico, além da presença de vasos sanguíneos. A camada muscular subdivide-se em interna ou submucosa, média ou vascular e externa ou subserosa. A camada serosa é composta por tecido conjuntivo e mesotélio. Na histomorfometria, verificou-se que a espessura uterina total e a espessura da camada mucosa, em média, foram maiores nas fêmeas não nulíparas.

The uterine morphology was studied through ovarysalpingohysterectomy in nulliparous and non nulliparous agoutis (Dasyprocta azare). The uterus macroscopic analysis was done "in loco" and in the removed specimens. Fragments of the proximal, media and distal portions of this viscerae were collected, fixed and histologically prepared, and the samples analyzed through light microscopy and through the histomorphometry of the uterine layers. Topographycally, the uterus of this rodent is located on the sub lumbar area, caudally to the kidneys, and following the ovaries and uterine horns, getting through the pelvic entrance, where it is located dorsally to the bladder. It is characterized as a double uterus, although there is only an external cervical os. Microscopically, the uterine mucous is formed by epithelial elevations, from cylindrical to pseudostratified epithelium, which is supported by a loose connective tissue where endometrial glands covered by cylindrical epithelium can be observed, besides blood vessels. The muscle layer is subdivided in inner or submuscous, median or vascular and outer or subserous. The serous layer is composed of a connective tissue and mesothelium. In the histomorphometry analysis, the total uterine thickness and the mucous layer thickness, in average, were bigger on non nulliparous females.

Morfologia e histologia do oviduto de marrecas Ana boschas / Morphology and histology of Ana Boschasfemale ducks oviduct

Avaliaram-se o comprimento do infundíbulo, do magno, do istmo, do útero e da vagina e o número de pregas do magno e do istmo do oviduto de 20 marrecas Ana boschas na fase reprodutiva. O infundíbulo apresenta mucosa com pregas longitudinais e baixas, revestidas por epitélio pseudoestratificado cilíndrico ciliado, com células caliciformes. O magno, compartimento mais longo do oviduto, 25,38cm±3,20, encontra-se constituído por uma camada mucosa com pregas altas e espessas revestidas por células cilíndricas ciliadas e abundantes células caliciformes. O istmo é formado por uma mucosa com pregas estreitas e curtas e numerosas glândulas tubulares que se estendem para o interior da lâmina própria. O útero, região curta do oviduto, 5,25cm±1,26, apresenta parede com pregas e cristas baixas e numerosas glândulas tubulares enoveladas, dirigidas para o interior da lâmina própria. A vagina, um estreito tubo muscular, está constituído por oito anéis circulares, em média, e uma camada muscular altamente desenvolvida e espessa. A morfologia do oviduto da marreca apresenta características morfológicas e histológicas distintas dos galiniformes, observando-se que a vagina e a porção cranial do infundíbulo apresentam pregas e células caliciformes, respectivamente, sendo estas últimas estruturas ausentes nos galiniformes.

The length of infundibulum, magnum, isthmus, uterus, vagina, and the number of oviduct, magnum, and isthmus folds were evaluated in 20 Ana boschas female ducks in the reproductive phase. The infundibulum presented mucous membrane with longitudinal and short folds, covered by ciliated columnar pseudostratified epithelium, with goblet cells. Magnum, the longest oviduct compartment, 25.38cm±3.20, is constituted by mucous membrane with high and thick folds that are covered by ciliated columnar cells and many goblet cells. Isthmus is formed by mucous membrane with narrow and short folds, and many tubular glands that extend inside lamina propria. Uterus, an oviduct short region, 5.25cm±1.26, presented surface with short folds and crests, and numerous reeled tubular glands, that are directed inside lamina propria. Vagina, a strait muscular tube, is constituted by, approximately, eight circular rings, and a very developed and thick muscular layer. The oviduct morphology of female ducks presented different morphological and histological characteristics from Galliformes, because vagina and infundibulum cranial portion present folds and goblet cells, respectively, and the last cited structures are absent in Galliformes.

Dimorfismo sexual da traquéia e siringe de periquito (Touist sp. ) / Sexual dimorphism of the parakeet (Touist sp. ) trachea and syrinx

Investigaram-se as diferenças morfológicas da siringe do periquito Touist sp, cinco machos e cinco fêmeas. A traquéia e a siringe foram dissecadas com o auxílio de uma lupa estereoscópia e avaliaram-se o número de anéis, o comprimento da traquéia e da siringe e o comprimento e espessura do músculo traqueolateral. A traquéia do macho apresentou maior número de anéis e maior comprimento que a das fêmeas. O músculo traqueolateral dos machos é mais vigoroso e origina-se no 43º anel traqueal enquanto o das fêmeas origina-se no 30º anel traqueal e se insere no primeiro anel bronquial. A siringe do piriquito é constituída por anéis craniais, cinco nos machos e três nas fêmeas, anéis intermediários, com formato semelhante a uma bolha sulcada ventralmente, anéis caudais, quatro em ambos os sexos, e pessulo. O dimorfismo sexual está presente na morfometria da musculatura e das cartilagens, o que reflete no canto mais vigoroso dos machos

The morphologic differences of the trachea and syrinx of five male and five female Touist sp. parakeets were studied. Trachea and syrinx were dissected with the aid of a stereoscopic magnifying glass and the number of rings, the length of trachea and syrinx were evaluated, as well as the length and thickness of the tracheolateral muscle. Trachea of male parakeets had larger amount of rings and was lengther than the female. Tracheolateral muscle of the males was more vigorous and arised in the 43rd tracheal ring while in the females it originated in the 30th tracheal and inserted in first bronchi ring. The syrinx was constituted by cranial rings (five in males and three in females), intermediate rings (resembly a bubble furrowed ventrally), caudal rings (four in both sexes) and the pessule. Sexual dimorphism directly influenced on the syrinx, concerning the morfometry of the musculature and cartilages, making males sound more vigorously

Morphometry and morphology of nucleus of the Sertoli and interstitial cells of the tambaqui Colossoma macropomum (Cuvier, 1881) (Pisces: Characidae) during the reproductive cycle

This study allowed the characterization of the tambaqui Colossoma macropomum testes structural organization, emphasizing Sertoli and interstitial cells and analyzing morphometrically the Sertoli cell nucleus diameter and the interstitial tissue area during the reproductive cycle. Fragments of tambaqui testes were collected in the following reproductive cycle stages: immature, resting, maturation I and II, mature, and regression, and were histologically processed. The Sertoli cells were found at the periphery of the cysts of germinative lineage cells and the nuclei were shown to be smaller as these cells developed. The interstitial cells were better observed between the seminiferous lobules next to vessels in the interstitial tissue of maturing testes

Síndrome de Lowe (síndrome oculocerebrorrenal): relato de cinco casos / Lowe syndrome (oculocerebrorrenal syndrome): report on 5 cases

Apresentam-se e discutem-se cinco casos de síndrome de Lowe, que se caracteriza por alteraçöes congênitas oculares (catarata, glaucoma), retarde mental grave, hiperreflexia e anormalidades funcionais do rim. Esses casos foram atendidos no serviço dos autores nos últimos 12 anos e o objetivo deste trabalho é ressaltar a importância do aconselhamento genético para evitar a ocorrência de novos casos