Meningeoma intraventricular: registro de um caso

Moraes, Lamartine Corrêa de; Haddad, Fahd; Wanderley, Eliana C. F. O.; Maciel, Damacio Ramón Kaimen; Ribeiro, José Ivan Cipoli

doi:10.1590/s0004-282x1980000300012

Arq. Neuro-Psiquiatr.

1980

DOI: 10.1590/s0004-282x1980000300012

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Meningeoma intraventricular: registro de um caso

Lamartine Corrêa de Moraes

Fahd Haddad

Eliana C. F. O. Wanderley

et al.

Abstract: Os meningeomas constituem 15 a 25% das neoplasias primárias intracranianas, geralmente apresentando características benignas. São mais freqüentes nas mulheres, ocorrendo em torno da 3* e 4* década da vida, podendo contudo ocorrer na infância. São de evolução lenta e têm bom prognóstico quando tratados cirurgicamente 7,9,10. Estas neoplasias têm sua origem nas granulações aracnóides e apresentam, quanto a localização, predileção pelas áreas parasagitais, fissura sylviana, nervos olfativos, asas do esfenóide e â… Show more

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Cited by 3 publications

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Salivary apyrase of Rhodnius prolixus. Kinetics and purification

Sarkis¹,

Guimarães²,

Ribeiro³

1986

Biochemical Journal

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The salivary apyrase activity of the blood-sucking bug Rhodnius prolixus was found to reside in a true apyrase (ATP diphosphohydrolase, EC 3.6.1.5) enzyme. The crude saliva was devoid of 5'-nucleotidase, inorganic pyrophosphatase, phosphatase and adenylate kinase activities. ATP hydrolysis proceeded directly to AMP and Pi without significant accumulation of ADP. Km values for ATP and ADP hydrolysis were 229 and 291 microM respectively. Ki values for ATP and ADP inhibition of ADP and ATP hydrolysis were not different from the Km values, and these experiments indicated competitive inhibition. Activities were purified 126-fold by combined gel filtration and ion-exchange chromatography procedures with a yield of 63%. The purified enzyme displayed specific activities of 580 and 335 mumol of Pi released/min per mg of protein for ATP and ADP hydrolysis respectively. The action of the purified enzyme on several phosphate esters indicates that Rhodnius apyrase is a non-specific nucleosidetriphosphate diphosphohydrolase.

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Salivary apyrase of Rhodnius prolixus. Kinetics and purification

Sarkis¹,

Guimarães²,

Ribeiro³

1986

Biochemical Journal

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Salivary gland extracts from the deerfly contain a potent inhibitor of platelet aggregation.

Grevelink

Youssef

Loscalzo

et al. 1993

Proc. Natl. Acad. Sci. U.S.A.

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Salivary gland extracts of the deerfly contain a potent inhibitor of platelet aggregation, which assists the insect in obtaining a blood meal. The extract prevents platelet aggregation induced by ADP, thrombin, and collagen and inhibits fibrinogen binding to the glycoprotein fib/Ma receptor on platelets. The active component in deerfly salivary gland extract appears to be a protein that is comparatively more potent than the disntegrins present in viper venoms. Isolation and characterization of this protein may provide different directions in therapeutics and studies of normal platelet physiology.

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Exercise-Induced Neuroplasticity: A Mechanistic Model and Prospects for Promoting Plasticity

et al. 2018

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Aerobic exercise improves cognitive and motor function by inducing neural changes detected using molecular, cellular, and systems level neuroscience techniques. This review unifies the knowledge gained across various neuroscience techniques to provide a comprehensive profile of the neural mechanisms that mediate exercise-induced neuroplasticity. Using a model of exercise-induced neuroplasticity, this review emphasizes the sequence of neural events that accompany exercise, and ultimately promote changes in human performance. This is achieved by differentiating between neuroplasticity induced by acute versus chronic aerobic exercise. Furthermore, this review emphasizes experimental considerations that influence the opportunity to observe exercise-induced neuroplasticity in humans. These include modifiable factors associated with the exercise intervention and nonmodifiable factors such as biological sex, ovarian hormones, genetic variations, and fitness level. To maximize the beneficial effects of exercise in health, disease, and following injury, future research should continue to explore the mechanisms that mediate exercise-induced neuroplasticity. This review identifies some fundamental gaps in knowledge that may serve to guide future research in this area.

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Meningeoma intraventricular: registro de um caso

Cited by 3 publications

References 4 publications

Salivary apyrase of Rhodnius prolixus. Kinetics and purification

Salivary apyrase of Rhodnius prolixus. Kinetics and purification

Salivary gland extracts from the deerfly contain a potent inhibitor of platelet aggregation.

Exercise-Induced Neuroplasticity: A Mechanistic Model and Prospects for Promoting Plasticity

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