Light-induced acceleration of retina development in a mouth-brooding teleost

The Journal of Experimental Zoology
G Grün

Abstract

Rearing animals in the dark had been shown to be either without effect on the development of the retina or to result in a reduction or a delay of retinal maturation. In the present study, the influence of light on a retina which normally develops under conditions of very dim light has been investigated. When 3-day-old embryos of the mouth-brooding teleost Tilapia leucosticta are placed into a continuously lighted environment, from day 6 on, optic tract diameter and inner plexiform layer thickness increase up to day 10 or 12. In the dark-reared retina, this increase occurs only after day 10. Similarly, synaptic junctions of the inner plexiform layer appear at about day 6 in the light-reared retina and increase continuously on following days, whereas in the retina of embryos reared in darkness, they appear at day 7 and do not increase essentially before day 11. These and other data suggest that continuous light induces a precocious growth of retinal structures. The first differences between light- and dark-reared retinae appear synchronously with the beginning of receptor cell development and prior to the first synaptic junctions. A non-neurally mediated effect of light on the retinal ganglion cells is consequently assumed.

References

Apr 26, 1977·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·S P Rose
Jan 1, 1977·Journal of Neurobiology·A M BrownD C Eaton
Apr 1, 1975·Proceedings of the National Academy of Sciences of the United States of America·P GrobsteinP C Fox
Mar 1, 1968·Journal of Ultrastructure Research·F E Bloom, G K Aghajanian
Jan 1, 1974·Cell and Tissue Research·J L Roach, C A Wiersma
May 1, 1972·Experimental Neurology·K V AndersonW K O'Steen
May 1, 1972·The American Journal of Anatomy·W K O'SteenK V Anderson
Jan 1, 1971·Brain : a Journal of Neurology·M R Crompton
Jan 1, 1968·Archives of Ophthalmology·T Kuwabara, R A Gorn
Jan 1, 1969·Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde·A GrignoloP Vittone
Jan 1, 1967·Archives of Ophthalmology·R A Gorn, T Kuwabara
Aug 1, 1957·Okajimas Folia Anatomica Japonica·S KOISHIKAWA
Feb 19, 1964·Zeitschrift für Zellforschung und mikroskopische Anatomie·H A HANSSON, P SOURANDER
Apr 1, 1965·The Journal of Cell Biology·R M EAKIN
Mar 1, 1965·Experimental Neurology·G W PAULSON
Nov 1, 1961·Experimental Cell Research·E RASCHK L CHOW

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.