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Registros recuperados: 10
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Approche du métabolisme des plasmogènes cérébraux : influences du vieillissement et des acides gras alimentaires n-3 Inra
André, A..
Tipo: Thesis Palavras-chave: PLAMALOGENE; VIEILLISSEMENT; CERVEAU; ACIDE GRAS N-3; RAT PLASMALOGEN; AGING; BRAIN; N-3 FATTY ACIDS; RAT.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010fdb54853&uri=/notices/prodinra1/2011/04/
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Brain glutamic acid decarboxylase and synthesis of amino-butyric acid in vertebrate and invertebrate species National Institute of Agronomic Research
Frontali, N..
An isotopic method is described for the simultaneous determination of the CO2 and GABA production from glutamic acid in nervous tissue preparations. Tissue from different species has been examined under a variety of conditions. Discrepancies between the production of GABA and of CO2 have been demonstrated in two instances-at the higher of two pH optima and in subcellular fractions. A quantitative analysis of the free amino acids of the honeybee brain is appended.
Tipo: Journal Article-postprint Palavras-chave: VERTEBRATE; INVERTEBRATE; BRAIN; GLUTAMIC ACID DECARBOXYLASE; ENZYME; AMINOBUTYRIC ACID; VERTEBRE; INVERTEBRE; CERVEAU; ACIDE GLUTAMIQUE DECARBOXYLASE; ENZYME; ACIDE AMINOBUTYRIQUE.
Ano: 1964 URL: http://hdl.handle.net/2174/488
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Degenerative erscheinungen am gehirn alternder bienenköniginnen (Apis mellifica, L.) National Institute of Agronomic Research
Lucht-Bertram, Elisabeth.
In certain brain parts of queen bees, 2 and 3 years old, a defective tissue is found that, in bilateral structures also occurs symmetrically. The cavities can reach 0.0015 mm3 of volume, this size being found almost exclusively in the nuclear parts. Very seldom there are comparatively small lacunas in the fibrillar tissue. In these investigations the corpora pedunculata (mushroom bodies) - the place of associative functions - showed no signs of degeneration in the cup sphere. This divergent behaviour of the superior centres is in accordance with already know statements.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; QUEEN; AGE; BRAIN; DEGENERATION; SYMETRY; NUCLEAR PART; FIBRILAR TISSUE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; REINE; AGE; CERVEAU; DEGENERATION; SYMETRIE; ZONE NUCLEAIRE; TISSU FIBREUX.
Ano: 1963 URL: http://hdl.handle.net/2174/396
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Effective antigen-retrieval method for immunohistochemical detection of abnormal isoform of prion proteins in animals OAK
Furuoka, Hidefumi; Yabuzoe, Atushi; Horiuchi, Motohiro; Tagawa, Yuichi; Yokoyama, Takashi; Yamakawa, Yoshio; Shinagawa, Morikazu; Sata, Tetsutaro.
For immunohistochemistry of the prion diseases, several pretreatment methods to enhance the immunoreactivity of human and animal abnormal proteinase-resistant prion protein (PrPSc) on the tissue sections have been employed. The method of 121 degrees C hydrated autoclaving pretreatment or the combination method of 121 degrees C hydrated autoclaving with a certain chemical reagent ( formic acid or proteinase K, etc) are now widely used. We found that an improved hydrated autoclaving method at 135 degrees C, more effectively enhanced PrPSc immunoreactivity for the antibodies recognizing the linear epitope. In addition, this method was more effective for the long-term fixation samples as compared with other previous methods. However, this modified method could...
Palavras-chave: Prion protein; Immunohistochemistry; Antigen retrieval; Autoclaving; Monoclonal antibody; CREUTZFELDT-JAKOB-DISEASE; MONOCLONAL-ANTIBODIES; IMMUNOCYTOCHEMISTRY; IMMUNOREACTIVITY; PROTOCOLS; FIXATION; DEPOSITS; PLAQUES; BRAIN; PRP.
Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/712
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Electron microscope observations on the calyces of the insect brain National Institute of Agronomic Research
Trujillo-Cenóz, O.; Melamed, J..
The pedunculate bodies consist of three fibrillar regions: calyces, stalk, and roots. A group of small association neurons (the globule cells) lies within and around the calyces. The synaptic region of the calyces shows, under the phase contrast microscope, small, dense circumscribed areas of neuropil corresponding to the so-called “glomeruli” of light microscopists. The electron microscope demonstrated that each glomerulus consists of a large central nerve ending and several thin peripheral fibers. The central ending is filled with small vesicles. Mitochondria and dense granules are found intermixed with the vesicular material. The peripheral fibers contain mitochondria, slender tubules, and a few vesicles. The origin of the central ending and...
Tipo: Journal Article-postprint Palavras-chave: INSECT; BRAIN; NEURONE; PEDUNCULATE BODY; CALYCE; ELECTRON MICROSCOPE; INSECTE; CERVEAU.
Ano: 1962 URL: http://hdl.handle.net/2174/513
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In situ hybridization of dihydroxyacetone phosphate acyltransferase, the regulating enzyme involved in plasmalogen biosynthesis Inra
André, A.; Tessier, C.; Bretillon, L.; Sébédio, J.L.; Chardigny, J.M..
In situ hybridization can be carried out using different methods. The experimenter has to choose various parameters: the type of tissue fixation, the time of incubation, and the duration of the exposure time. All these parameters are determinant for the sensitivity and the resolution of this technique. This publication of technical aspects described different experiments performed for in situ hybridization on liver tissue. We may conclude on the parameters to optimize each step of the hybridization procedure. Moreover, this technique could be transposed to the brain and applied to little structures with a light expression of DHAP-AT.
Tipo: Journal Article Palavras-chave: IN SITU HYBRIDIZATION; DIHYDROXYACETONE PHOSPHATE ACYLTRANSFERASE; PLASMALOGEN; LIVER; BRAIN.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200815fa84f&uri=/notices/prodinra1/2008/11/
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Nerve tracts in bee (Apis mellifica) running from the sight and antennal organs to the brain National Institute of Agronomic Research
Jawlowski, Hieronim.
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; SOCIAL INSECT; POLLINATOR; HYMENOPTERA; APIDAE; APOIDEA; APIS MELLIFERA; ANATOMY; NERVE; TRACT; VISION; ANTENNA; BRAIN; ANATOMIE; ABEILLE DOMESTIQUE; INSECTE SOCIAL; POLLINISATEUR; HYMENOPTERA; APOIDEA; APIS MELLIFERA; APIDAE; NERF; VOIE NERVEUSE; VISION; ANTENNE; CERVEAU.
Ano: 1957 URL: http://hdl.handle.net/2174/302
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Plasmalogen metabolism-related enzymes in rat brain during aging: influence of n-3 fatty acid intake Inra
André, A.; Juanéda, P.; Sébédio, J.L.; Chardigny, J.M..
Plasmalogens (Pls) are phospholipids containing a vinyl–ether bond at the sn-1 position of the glycerol backbone. They represent between 1/2 and 2/3 of the ethanolamine phospholipids in the brain. During aging, the Pls content in human brain falls down. However, the role of Pls metabolism-related enzymes in the regulation of Pls levels remains to be determined. Dihydroxyacetone phosphate acyltransferase (DHAP-AT) is the enzyme involved in the first step of Pls biosynthesis. In the brain, a phospholipase A2, which selectively acts on Pls, has been isolated (Pls-PLA2s). In this work, we aimed to evaluate the impact of DHAP-AT (a key enzyme of Pls biosynthesis) and Pls-PLA2 (a specific Pls degradation enzyme) on the evolution of Pls content in the rat brain...
Tipo: Journal Article Palavras-chave: PLASMALOGEN; DIHYDROXYACETONE PHOSPHATE ACYLTRANSFERASE; PHOSPHOLIPASE A2; AGING; BRAIN.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008a0cc61d6&uri=/notices/prodinra1/2008/11/
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Revisiting the anatomy of the central nervous system of a hemimetabolous model insect species: the pea aphid Acyrthosiphon pisum Inra
Kollmann, M.; Minoli, S.; Bonhomme, J.; Homberg, J.; Schachtner, J.; Tagu, D.; Anton, S..
Aphids show a marked phenotypic plasticity, producing asexual or sexual and winged or wingless morphs depending on environmental conditions and season. We describe here the general structure of the brain of various morphs of the pea aphid Acyrthosiphon pisum. This is the first detailed anatomical study of the central nervous system of an aphid by immunocytochemistry (synapsin, serotonin, and several neuropeptides), ethyl-gallate staining, confocal laser scanning microscopy, and three-dimensional reconstructions. The study has revealed well-developed optic lobes composed of lamina, medulla, and lobula complex. Ocelli are only present in males and winged parthenogenetic females. The central complex is well-defined, with a central body divided into two parts,...
Tipo: Journal Article Palavras-chave: PUCERON; PLASTICITE PHENOTYPIQUE; CERVEAU INSECT NERVOUS SYSTEM; BRAIN; NEUROPIL; PHENOTYPIC PLASTICITY; APHIDS.
Ano: 2011 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011eb8844e3&uri=/notices/prodinra1/2011/03/
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Studies in the mode of action of royal jelly in honeybee development : IV. Development within the brain and retrocerebral complex of female honeybee larvae National Institute of Agronomic Research
Canetti, Sylvia J.; Shuel, R.W.; Dixon, S.E..
Histological evidence is presented for a caste difference in endocrine activity during the critical period of determination in the larval honeybee. Until the Last larval instar, neurosecretory cells in the brain of the honeybee larva remain undifferentiated. During this undifferentiated period there is a quantitative difference in apparent activity, as evidenced by the frequency of occurrence of cytoplasmic particles in certain large neuroblasts. Whereas the histological criteria for neurosecretory cells cannot be fulfilled, the brain is presumably exercising a regulatory role in growth and development. These large neuroblasts with phloxinophil inclusions are the likely candidate cells. Between the ages of 40 and 80 hours there is considerably more...
Tipo: Journal Article-postprint Palavras-chave: HONEYBEE; APIS MELLIFERA; APIDAE; HYMENOPTERA; SOCIAL INSECT; LARVAE; FEMALE; DEVELOPMENT; BRAIN; ROYAL JELLY; ABEILLE DOMESTIQUE; INSECTE SOCIAL; LARVE; FEMELLE; DEVELOPPEMENT; CERVEAU; GELEE ROYALE.
Ano: 1964 URL: http://hdl.handle.net/2174/485
Registros recuperados: 10
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