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A Cobos

Publications and source records attributed to A Cobos.

26 records · Page 2Linked to original sources
PubMed1992

Influence of continuous electromagnetic fields on the stage, weight and stature of the chick embryo.

The influence of continuous electromagnetic fields (0, 181 or 361 Gs/cm2) on the development of chick embryo (n = 144) was studied. Several parameters were determined at days 5, 10 and 15 of incubation: stage (following Hamburger and Hamilton), vertex-coccyx length (size) and weight. At 5 days of incubation, all embryos showed a similar stage. However, at days 10 and 15, the embryos exposed to 181 Gs/cm2 showed a stage significantly superior to that of the others. There were no differences between the exposed embryos and the control ones with regard to weight and stature, except at 15 days when the embryos exposed to 361 Gs/cm2 showed greater weight and stature than those of the controls.

Animals↗
PubMed1989

Relationship between rotational behaviour induced by apomorphine and caffeine in rats with unilateral lesion of the nigrostriatal pathway.

The contralateral rotational behaviour produced by apomorphine and caffeine has been studied in 100 rats with unilateral lesion of the nigrostriatal pathway induced with 6-OHDA. Rats with a two-peak rotational pattern induced by apomorphine, showed a greater number of contralateral turns, induced by apomorphine and caffeine, than rats which did not show this rotational pattern. A correlation was observed between the number of rotations induced by apomorphine and those induced by caffeine. A relationship between the two-peak rotational pattern induced by apomorphine and the initial-peak pattern induced by caffeine was also observed.

Animals↗
PubMed1988

Comparison between apomorphine and amphetamine-induced rotational behaviour in rats with a unilateral nigrostriatal pathway lesion.

Apomorphine and amphetamine-induced rotational behaviour in 310 rats with a unilateral 6-OHDA nigrostriatal pathway lesion has been studied. Animals presenting an apomorphine-induced contralateral rotation with a "two-peak" pattern, showed a greater number of contralateral turns induced by apomorphine and fewer ipsilateral turns induced by amphetamine than rats without this pattern. In addition, we have not found any correlation between apomorphine and amphetamine-induced turning behaviour.

Amphetamine↗
PubMed1988

Morphology of the lumbar vertebral canal.

In a series of 215 anteroposterior X-ray films, a study was made of the horizontal distance between the pedicles of each lumbar vertebra, first of all sequentially, describing the morphology adopted by the lateral limits of the canal, and secondly determining the absolute value for each level separately and in relation to the variables of sex and age. The absolute value of this distance at each level is related to the thickness of the pedicles and the width of the vertebral bodies of L3 and L4. The values obtained were tested with the appropriate statistics in each case.

Adult↗
PubMed1987

L-dopa causes an acute, partial and reversible reversal of denervation-induced supersensitivity of striatal dopaminergic receptors.

Denervation-induced supersensitivity of the striatal dopamine receptors can be quantified by the turning behaviour induced by apomorphine. With this experimental model we found that high-dose L-dopa/carbidopa administration reduced this supersensitivity. This effect was seen on the 1st day and did not alter over 5 or 10 days of treatment, but disappeared when medication was discontinued. The degree of reduction was the same, independent of the dose and period of administration. This effect could provide a useful model for studying the phenomenon of the irreversibility of the supersensitivity of the striatal dopamine receptors.

Animals↗