Evidence map›Paper›PMID 2274102›Full record

ArticleNeurochemical research1990

Glutamic acid decarboxylase in different areas of the developing chick central nervous system.

N N Gonzàlez, J Alfie, S Fiszer de Plazas

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Neurochemical research, 1990. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

N N GonzàlezInstituto de Biologia Celular, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
J Alfie
S Fiszer de Plazas

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The temporal course of the development of GAD activity in GABAergic neurons was studied in the chick retina, optic lobe and cerebellum. The developmental pattern of GAD activity was similar in the three areas studied, showing typical sigmoideal curves, which reached a maximal value at the 3rd post-hatching day. Kinetic studies during development revealed that Km remained unchanged while Vmax increased 3-fold in the retina (48.99 +/- 0.84 nmol/hr/mg protein), almost 4-fold in the optic lobe (162.77 +/- 4.32 nmol/hr/mg protein) and 3.5 fold in the cerebellum (69.30 +/- 1.26 nmol/hr/mg protein). The developmental pattern of GAD activity in homogenates of the three areas studied from dark-reared and light-reared chicks with respect to normal light-dark cycle animals showed no significant differences. These results indicate that the increase in GAD activity during development are not due to a change in the affinity for its substrate but rather to changes in the concentration of the enzyme. The developmental pattern of GAD activity in the chick visual system was not affected by environmental conditions suggesting that the developmental profile is light-independent.

Indexed as

AnimalsCerebellumChickensDarknessGlutamate DecarboxylaseKineticsLightRetinaTectum MesencephaliGlutamate Decarboxylase

Identifiers

PMID2274102

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.