Stereological Design
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. The effect of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) on mice myocardial morphology
RESUMO: Estudos têm demonstrado a desnervação simpática cardíaca no modelo da administração do MPTP em camundongo. A toxicidade do MPTP causa lesão ao nervo simpático e depleção da norepinefrina. As avaliações dos danos na inervação do coração são baseadas em métodos de imagem, eletrofisiológico e bioquímico. Contudo, estes estudos carec
Pesq. Vet. Bras.. Publicado em: 01/07/2019
-
2. The quantification of testicular cells during the postnatal development in two Caviomorph rodents: the guinea pig (Cavia porcellus) and the cutia (Dasyprocta agouti)
ABSTRACT The germinative, Sertoli and Leydig cells of two caviomorph rodents (Cavia porcellus and Dasyprocta agouti) were counted as well as the estimation of the total volume of the testis and the total volume of seminiferous tubules and interstitium in prepubertal, pubertal and adult animals. The number of spermatogonia, spermatocytes and spermatids cells
An. Acad. Bras. Ciênc.. Publicado em: 17/08/2017
-
3. Effects of the physical activity on the vasculo-alveolar complex of the rats lung / Efeitos da atividade física aeróbia no complexo vásculo-alveolar no pulmão de ratos
The cardiovascular system is subject to important autonomic and haemodynamic adaptation by virtue of regular physical training. The aim of this study was to describe the effects of a treadmill physical training on the alveolar cytoarchitecture of the rats lung from a morphoquantitative and functional point of view. Additional aims were to quantify the heart
Publicado em: 2009
-
4. Neuronal number increase followed by neuronal hypertrophy may be a compensation mechanism for neuronal loss as a result of unilateral remotion of cranial cervical ganglion in sheep / Aumento no número de neurônios seguido de hipertrofia neuronal pode ser mecanismo de compensação para perda neuronal resultante da remoção unilateral do gânglio cervical cranial em ovinos
O sistema nervoso simpático é escassamente descrito em livros na anatomia veterinária e encontra-se pouca informação a respeito de seu funcionamento em grandes mamíferos. O conceito atual da estrutura e função dos gânglios simpáticos deriva de estudos desenvolvidos no gânglio cervical superior (GCC) em animais de laboratório, devido ao seu grande
Publicado em: 2006
-
5. A stereological method for estimating the total number of ventricular myocyte nuclei in fetal and postnatal hearts.
An experimental protocol is presented for obtaining efficient estimates of the total numbers of myocyte nuclei in the ventricles of human hearts from archival collections. Hearts were collected postmortem from fetuses at 31-42 weeks of gestation and infants at 7 days-9 months postnatal age. Ventricles from normal and abnormal subjects were examined. Numbers
-
6. Stereological and allometric studies on mammalian cerebral cortex with implications for medical brain imaging.
Design-based stereological methods (the Cavalieri principle and vertical sectioning) have been used to estimate the volumes, surface areas and thicknesses of the cerebral cortex. Cortices of individual hemispheres were analysed in a selection of 31 adult domestic mammals (horses, oxen, pigs, goats, dogs, cats and rabbits). There were 13 females and 18 males.
-
7. 'If you assume, you can make an ass out of u and me': a decade of the disector for stereological counting of particles in 3D space.
The year 1984 was a watershed in stereology. It saw the introduction of highly efficient and unbiased design-based methods for counting the number of arbitrary objects in 3-dimensional (3D) space using 2D sectional images. The only requirement is that the objects be unambiguously identifiable on parallel sections or successive focal planes. The move away fro
-
8. Morphometric studies of the epidermal-dermal junction in the rat ear: some effects of experimental friction on epidermis and anchoring fibrils.
The aim of this investigation was to determine whether, following the application of experimental friction to the skin, qualitative an quantitative differences could be induced in the epidermis and in anchoring fibrils. The skin of rat ears was subjected to repeated mild fractional stimulation with a rotating bristle brush moistened with saline thrice weekly
-
9. An unbiased stereological study on subpopulations of rat liver macrophages and on their numerical relation with the hepatocytes and stellate cells
Studies on liver macrophages have elucidated their key roles in immunological, fibrotic and regenerative responses, and shown that macrophages are not a homogeneous population. In the rat, two sets of liver macrophages coexist, identified by ED1 and ED2 antibodies. Those sets have different quantitative responses in liver injuries and may have different task
Blackwell Science Inc.