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| Registros recuperados: 13 | |
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| Pereira,LS; Silva,AV; Araújo,EJA; Sant'Ana,DMG. |
| Toxoplasmosis, a globally distributed feline-associated zoonosis caused by the protozoan Toxoplasma gondii, affects birds and mammals, including humans. This study assesses the consequences of acute T. gondii infection for NADH-diaphorase positive myenteric neurons in rat jejunum. Ten male Wistar rats (Rattus norvegicus) were divided into two groups: G1 (n = 5) and G2 (n = 5). Animals from G2 were orally inoculated with 500 genotype III (M7741) T. gondii oocysts. Twenty-four hours after inoculation, the animals were euthanized and had their jejuna removed, through laparotomy, and measured (length and width) to calculate their areas. Intestinal segments were submitted to NADH-diaphorase histochemistry to evidence the most metabolically active subpopulation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toxoplasma gondii; Jejunum; Myenteric plexus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000200011 |
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| PEREIRA,JOICE N.B.; MARI,RENATA B.; STABILLE,SANDRA R.; FARIA,HAROLDO G. DE; MOTA,THAIS F.M.; FERREIRA,WALTER M.. |
| Aging is a biologic process characterized by progressive damage of structures and functions of organic systems. In gastrointestinal tract, it can involve enteric nervous system, which plays an important role in digestion and absorption of nutrients, causing hastening of intestinal transit thus reducing its absorptive function. Caloric restriction has been used in several studies with the intention of delaying deleterious effects of aging. This study aimed to evaluate the effects of caloric restriction on myenteric neurons of ileum by aging in rats. 30 Wistar rats were grouped as follows: GI (animals aged 6 months fed with normal diet), GII (animals aged 18 months fed with normal diet) and GIII (animals aged 18 months subject to 31% of caloric restriction).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aging; Caloric restriction; Myenteric plexus; Small intestine. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301471 |
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| Sant'Ana,Débora M.G.; Araújo,Eduardo J.A.; Ramos,Diego H.; Hermes-Uliana,Catchia; Natali,Maria Raquel M.. |
| The effects of severe protein malnutrition (4%) on myenteric neurons of Wistar rat duodenum, in relation to a standard 22%-protein diet for rodents, were assessed in this study. Segments of the duodenum from 10 rats from each nutritional group were submitted to the elaboration of whole mounts - 5 stained with Giemsa to determine the total population of myenteric neurons and the others stained by a histochemical method to detect nervous cells through the NADPH-diaphorase enzyme activity for studying the subpopulation of nitrergic neurons. The area of 100 neurons per animal, totalizing 2,000 neurons, were randomly measured by using the Image Pro-Plus®software. Malnourished rats presented 34.38% lower body weight and 10.60% duodenum length reduction when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enteric nervous system; Malnutrition; Myenteric plexus; Nitrergic neurons. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300022 |
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| TRONCHINI,ELEANDRO A.; TREVIZAN,ALINE R.; TASHIMA,CRISTIANO M.; FREITAS,PRISCILA DE; BAZOTTE,ROBERTO B.; PEREIRA,MARLI A.S.; ZANONI,JACQUELINE N.. |
| The objective of this work was to investigate the effect of the L-glutamine supplementation to prevent - diabetes induced changes in myenteric neurons and also to verify the effect on the mucosa of the ileum of Wistar rats. The animals were divided in five groups (n = 5): untreated normoglycaemic (UN), normoglycaemic treated with L-glutamine (NG), untreated diabetics (UD), diabetics treated with L-glutamine, starting on the 4th (DG4) or 45thday following diabetes induction (DG45). The amino acid was added to the diet at 1%. The density and size of neurons, the metaphasic index in the crypt, the height of the villus, the depth of the crypt and the number of globet cells were determined. There was no difference in the neuronal density and in the cellular... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diabetes mellitus; L-glutamine; Myenteric plexus; Myosin-V; Rats. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301165 |
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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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| Registros recuperados: 13 | |
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