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| Registros recuperados: 58 | |
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| The myenteric plexus of the digestive tract of the wild mouse Calomys callosus was examined using a histochemical method that selectively stains nerve cells, and the acetylcholinesterase (AChE) histochemical technique in whole-mount preparations. Neuronal density was 1,500 ± 116 neurons/cm2 (mean ± SEM) in the esophagus, 8,900 ± 1,518 in the stomach, 9,000 ± 711 in the jejunum and 13,100 ± 2,089 in the colon. The difference in neuronal density between the esophagus and other regions was statistically significant. The neuron profile area ranged from 45 to 1,100 µm2. The difference in nerve cell size between the jejunum and other regions was statistically significant. AChE-positive nerve fibers were distributed within the myenteric plexus which is formed by... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Myenteric plexus; Wild mouse; Calomys callosus; Morphometry; Histochemistry. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000500009 |
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| Souza,N.B.; Liberti,E.A.; De-Souza,R.R.. |
| The submucous plexus of the normal small and large intestine of Calomys callosus was studied by NADH and AChE histochemical techniques and by transmission and scanning electron microscopy. The plexus contains (mean ± SD) 7,488 ± 293 neurons/cm2 in the duodenum, 5,611 ± 836 in the jejunum, 2,741 ± 360 in the ileum, 3,067 ± 179 in the cecum, and 3,817 ± 256 in the proximal colon. No ganglia or nerve cell bodies were seen in the esophagus, stomach, distal colon or rectum. The neurons are pear-shaped with a round or oval nucleus and the neuronal cell profile areas were larger in the large intestine than in the small intestine. Most of the neurons display intense AChE activity in the cytoplasm. AChE-positive nerve fibers are present in a primary meshwork of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Submucous plexus; Wild mouse; Morphometry; Histochemistry; Ultrastructure; Calomys callosus. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000500007 |
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| MONTEIRO,WALKYRIA ROSSI; CASTRO,MARÍLIA DE MORAES; MAZZONI-VIVEIROS,SOLANGE CRISTINA; MAHLBERG,PAUL GORDON. |
| The ten-celled biseriate glandular trichome of Stevia rebaudiana (Bert.) Bert.-Asteraceae, found on both leaf surfaces, originates from a single protruding, protodermal cell undergoing an anticlinal division. A subsequent series of periclinal divisions, occurring in acropetal sequence, leads to the formation of the trichome, composed of five pairs of cells, one pair of basal cells, another of stalk cells and three pairs of secretory head cells. Developing, still two-celled glandular trichomes already occur on leaf primordia of the second pair (these primordia measuring, in some cases, ca. 0.30 mm in length), and most of the glandular trichomes are at the mature phase on very young, expanding leaves, for example on those of the sixth pair. The secretory... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stevia rebaudiana; Asteraceae; Glandular trichomes; Ontogeny; Histochemistry. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300013 |
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| Teles,Maria Eloíza de Oliveira; Ribeiro,Maria das Graças; Maruch,Sandra Maria das Graças; Ribeiro,Roseli Deolinda. |
| The domestic dove Columba livia (Gmelin, 1789) is a species well adapted to Brazil and the study of its reproductive biology is part of a broad research project on birds. This essay describes the morphological aspects of the cloaca of female Columba livia, describing compartments lengthwise starting from the head such as the coprodeo, urodeo and proctodeo limited by mucosal folds. Each compartment of the cloaca presents its own morphological characteristics which differ one from the other in form, height and position of mucosal projections, kinds of tissues, presence and histological aspects of glands, presence of lymphonodus. The rectum opens into the coprodeo, the ureter opens into the oviduct and the cloacal sac opening into the proctodeo. Histochemical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Domestic dove; Morphological aspects; Histochemistry; Cloaca. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000100013 |
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| Britto,F. B.; Caetano,F. H.. |
| The venom glands are part of the most important defense weapon in Aculeata: the venom apparatus. The arrangement of these glands can vary among species, but in general they are composed of long secretory tubules connected to a muscular sac-like reservoir. Although the occurrence of these variations has been documented, many studies neglected the existence of a well-developed secretory portion in the lumen of the reservoir named convoluted gland. This study is an ultramorphological analysis of the venom glands and their histochemical relationship with the convoluted glands in the primitive social wasp Polistes versicolor. In this wasp, the venom glands are constituted by two tubular portions that penetrate individually in the venom reservoir, inside of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wasps; Venom glands; Convoluted glands; Ultramorphology; Histochemistry. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000200007 |
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| oic-Vranic,T.; Bobinac,D.; Bajek,S.; Jerkovic,R.; Malnar-Dragojevic,D.; Nikolic,M.. |
| The objective of the present investigation was to perform a 14-day time-course study of treatment with salbutamol, a ß2 adrenoceptor agonist, on rat soleus muscle in order to assess fiber type selectivity in the hypertrophic response and fiber type composition. Male Wistar rats were divided into four groups: control (N = 10), treated with salbutamol (N = 30), denervated (N = 30), and treated with salbutamol after denervation (N = 30). Salbutamol was injected intraperitoneally in the rats of the 2nd and 4th groups at a concentration of 0.3 mg/kg twice a day for 2 weeks. The muscles were denervated using the crush method with pean. The animals were sacrificed 3, 6, 9, 12, and 14 days after treatment. Frozen cross-sections of soleus muscle were stained for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salbutamol; Rat skeletal muscle; Soleus muscle; Denervation; Histochemistry; Muscle fibers. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001200008 |
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| Chagas,M. A.; Babinski,M. A.; Abidu-Figueiredo,M.; Costa,W. S.. |
| The otic ganglion is a cranial component of the parasympathetic division of the autonomic nervous system (ANS). Similar to other parasympathetic ganglia, otic ganglion presents multipolar neurons that are completely surrounded by satellite cells and intercellular substance as well, which allow us to use this ganglion as a good experimental model for studying the relationship neuron / extracellular matrix. We have studied rat otic ganglion in 10 animals through light microscopy. After routine histological methods, 5 µm sections were obtained and coloured by Gomori`s trichrome, periodic acid-Schiff (PAS), Alcian Blue pH 2.5 and pH1.0, acetylation + PAS, acetylation + deacetylation + PAS, acid hydrolysis + PAS, phenylhydrazine + PAS and thiosemicarbazide +... |
| Tipo: Journal article |
Palavras-chave: Rat; Otic ganglion; Autonomic nervous system; Histochemistry. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100015 |
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| Neiva,Gentileza Santos Martins; da Mota,Diógenes Luís; Batista,Ângela Maria Vieira; Sousa-Rodrigues,Célio Fernando de. |
| The mucosa of the rumen performs the functions of absorption, transportation, metabolism and protection, due to the presence of microorganisms in this compartment of the digestive tract, which are responsible for the digestion of approximately 60% of the organic material apparently digested. The histological structure and the histochemical profile of glicoconjugate of the mucosa of the stomach of sheep that were being fed with forrage cactus or palm (Giant Palm - Opuntia ficus indica Mil)1. Twelve sheep were used, with approximately 14 months old, which were oddly distributed in four diets: D1- 60.0% forrage palm + 40.0% concentrated ration; D2- 47.5% forrage palm + 12.5% elephant, napier grass + 40.0% concentrated ration, and D3 - 34,8% forrage palm +... |
| Tipo: Journal article |
Palavras-chave: Mucous membrane; Histology; Histochemistry; Forrage palm; Forrage cactus; Ovine. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000500034 |
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| Simionato,L. H.; Andreo,J. C.; Oliveira,J. A. de; Bortoluci,C. H. F.; dos Santos,N. B.; Moraes,L. H. R.; Rodrigues,A. C.; Andreo,M. B.. |
| The phylogenetic proximity of primates to humans, along with their behavioral, biochemical, and anatomical similarities, make such animals more interesting experimental models for biomedical researches, as compared to classical laboratory animals. Another aspect that has called the attention of researchers is the differentiated quadrupedalism present in some primates. The tufted capuchin monkey uses the ground and tree branches as its support for locomotion, showing various postures while performing this task. On the basis of this information, we have decided to study the rectus abdominis muscle of the tufted capuchin monkey, with the following goals: the frequency and area of fiber types; its possible compartmentalization; and identify if this muscle is... |
| Tipo: Journal article |
Palavras-chave: Rectus abdominis muscle; Histochemistry; Musculars fiber types; Tufted capuchin monkey; Cebus apella; Primates; Simians. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100011 |
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| Naves,Leandro Moura Leite; Issa,João Paulo Mardegan; Pitol,Dimitrius Leonardo; Fukada,Sandra Yasuyo; di Matteo,Miguel Ángel Sala; Iyomasa,Mamie Mizusaki. |
| The aim of this article is to show the clinical and histochemical alterations of the first periodontal ligament, on the right side, after upper molars teeth extraction on the left side in gerbils. After two months, the periodontal ligaments were removed and processed for histochemical analysis. The data showed that TRAP reaction was able to evidence the osteoclastic activity in the hyperfunction hemimandible, right side, explaining the functional changes in the periodontal ligament after teeth extraction, and a little gingival recession and radicular exposure of teeth without function was observed at inferior molars of the left side |
| Tipo: Journal article |
Palavras-chave: Periodontal ligament; Histochemistry; Malocclusion; Gerbil; Meriones unguiculatus. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400036 |
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| Mardegan Issa,João Paulo; Tiossi,Rodrigo; Mizusaki Iyomasa,Mamie. |
| The aim of this study was to evaluate alterations in the masseter muscle of 30 male guinea-pigs submitted to occlusal alteration. The animals were divided into 2 equal groups, the control group (C) only submitted to surgical stress, and the occlusal altered group (T) submitted to teeth extraction. Each group was subdivided into 3 groups, with 5 animals, for the following studies: macroscopy and vessels distribution, light microscopy and histochemical analysis, with animals' perfusion 2 months after surgery. Data were submitted to statistical analysis. Macroscopically, an anteroposterior orientation of the muscular fibers was found and statistical difference between C and T groups in width (p<0.05). Microscopically, C and T groups showed polygonal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Masseter muscle; Morphology; Histology; Histochemistry. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452007000300003 |
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| Gadelha-Alves,Rafaela; Rozensztranch,Andréa Melo Da Silva; Rocha- Barbosa,Oscar. |
| The intestines of Sturnira lilium, Phyllostomus hastatus, Carolliaperspicillata, GlossophagasoricinaíindDesmodus rotundus were analized through macroscopic, morphometric and light microscopy studies. The species studied presented some common charactenstics generally found in bats, such as the absence of a caecum and an appendix. The frugivorous bat S. lilium has a longer intestine than the other species. The intestinal epithelium is of the simple columnar type, constituted of absorptive cells characterized by microvilli and goblet cells, which in all the species proved to be PAS + and AB +. These cells presented some differences in quantity and in distribution among the species. The intestinal mucosa presented morphologic and morphometric differences, such... |
| Tipo: Journal article |
Palavras-chave: Intestines; Bats; Phyllostomidae; Histology; Histochemistry; Micrometry; Ecomorphology. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000300014 |
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| Registros recuperados: 58 | |
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