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111 Result(s)
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Article
Étude de l'activité de la protocollagène proline hydroxylase de foie d'embryon de Poulet en fonction de l'âge
In chick embryo liver, there was a peak activity of protocollagen proline hydroxylase (PPH) on the 18th day of the embryonnic state. The effect of triton X100 suggested that PPH was a particulate enzyme, in co...
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Article
Étude de l'effet hyperlipémiant de l'adrénaline chez la truite arc-en-ciel d'élevage (Salmo gairdnerii Richardson)
Plasmatic levels of total proteins, total lipids, phospholipids, triglycerides, free cholesterol and cholesterol esters, were measured in rainbow trout (Salmo gairdnerii Rich) after adrenaline administration and ...
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Dispositif à faible inertie pour l'enregistrement des mouvements respiratoires des poissons
Technical simplicity, sensitivity, low inertia and free motion of the fish are the advantages of the apparatus for the study and the recording of the respiratory movements mechanism of the fish. The luminous v...
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Article
Action de l'Halopéridol sur le métabolisme oxydatif de la dopamine dans le noyau caudé du rat
The action of Haloperidol on the content of dopamine and 3–4 dihydroxyphenylacetic acid (DOPAC) in the rat caudate nucleus has been examined. At doses which inhibit self-stimulation behaviour, dopamine remains...
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Article
Taux d'amines cérébrales d'une souche de souris «tremblantes»
In the ‘quaking’ mouse, an autosomal recessive mutant characterized by a deficiency of central nervous system myelin, the brain levels of 5-hydroxy-tryptamine and histamine are unchanged and the brain levels o...
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Sur une petite modification technique permettant une meilleure survie des artères de l'embryon de poulet explantées in vitro
The mesenteric artery of chicken embryo, cultivated in vitro in an abundant gas atmosphere (normal air) does not show the marked signs of cellular distress that appear when the artery is cultivated in the usua...
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Déclenchement de la soif hyperosmolaire chez le rat et le mérion
Osmotic arousal of thirst was studied in rats by measuring additional water intake for 2 h after i.v. infection of hyperosmolar solutions. NaCl and Mannitol induced a rapid and large water intake; urea and fru...
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Modifications ioniques chez l'Anguille argentée: influence de la vagotomie et de la surcharge sodique
The bilateral section of parasympathetic system in silver eel induces an increase of Na+ and K+ excretion without changes of Na/K value. This is observed both in tap or salt water treated subjects. It is suggeste...
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Article
Action anti-hypertensive du polythiazide
Polythiazide, like other thiazides, has an anti-hypertensive action in rats with DOCA hypertension but not with arterial hypertension produced by narrowing one renal artery.
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Article
Sur le comportement d'une artère de type élastique (a. anonyme) et d'une artère de type musculaire (a. carotide) de l'embryon de poulet en culture organo-typique
The authors have explanted elastic arteries (innominate) and muscular arteries (carotid) from chick embryos. The arteries have been kept from 1–8 days in vitro. Results: (a) the elastic arteries have a medium ...
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Sur le comportement des vaisseaux artériels de la base du cœur de l'embryon de poulet en culture organo-typique
The authors studied the arteries of the heart of chick embryos (aorta, anonyma and pulmonary arteries). They describe: (a) the morphogenesis of these arteries; (b) the ability of these arteries to survive and ...
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Article
Variations de salinité et osmorégulation chez la Tanche (Tinca tinca L.): Effet de la vagotomie sur l'excrétion des cations (Na+ et K+)
The excretion of Na+ by the Tench decreases after the bilateral section of parasympathetic system; this is observed both in normal and salt water treated subjects. This mechanism induces the increase of Na+ conce...
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Article
Etude de la répartition de l'inositol dans le cortex et le noyau de cristallin de Veau
In the lens cortex, as well as in the nucleus, inositol is found in 3 forms. The free form, which is acidosoluble, represents 99% of the total inositol. The combined forms, liberated after acidic hydrolysis of...
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Article
Observations effectuées sur une race de rats cataracteux induite par les rayons X
The hereditary cataract induced by X-irradiation of a female rat during infancy appears to be different from the spontaneous hereditary cataracts previously described in the rat. No significant difference was ...
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Article
Sur les effets du 5-fluoruracile injecté à l'embryon de poulet
5-FU, injected into the chick embryo in the early stages of development, has revealed three principal effects: an immediate lethal effect, a later lethal effect, and a specific teratogenic action.
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Article
Une forme de goître héréditaire chez le batracienXenopus laevis D.
A hyperplastic hereditary goitre, related to a delay of metamorphosis, was found in a female frog of the speciesXenopus laevis. The expression of the trait seems to depend on external conditions.
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Article
Fucosidases du suc digestif d'Helix pomatia
Theβ-d-fucosidase and α-l-fucosidase activities of digestive juice ofHelix pomatia have been studied.β-d-fucosidase can be separated fromβ-d-galactosidase by heat inactivation.
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Article
Action de la solution physiologique de chlorure de sodium sur le développement de l'embryon de poulet
The authors have tested the action of the physiological solution of natrium chloride on the development of the chick embryo: no teratogenic action, no early lethal action with small doses, and an important let...
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Article
Sur les équilibres d'épimérisation descis- ettrans-4-tertiobutylcyclohexanols
In contrast with the catalytic isomerization ofcis andtrans-4-tertiobutylcyclohexanols, epimerization of this alcohol by a slight excess of an alkaline metal does not afford a correct measure of the relative stab...
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Article
Processus autoantigénique non spécifique chez le rat nourri au diméthylaminoazobenzène
This result reports the apparition of a non-specific autoantigenic process between the liver, the spleen and the serum of rats fed on a dimethylaminoazobenzene and diethylaminoazobenzene-containing diet.