Electron microscopic study of synaptic contacts between photoreceptors and HRP-filled horizontal cells in the turtle retina

The Journal of Comparative Neurology
T Ohtsuka, N Kouyama

Abstract

The synaptic contacts between photoreceptors and horizontal cells in the retina of the turtle (Geoclemys) were studied. Horizontal cells were classified into three types according to their intracellularly recorded spectral responses: luminosity, biphasic chromaticity, and triphasic chromaticity horizontal cells (LHC, BHC, and THC). These cells were then iontophoretically filled with horseradish peroxidase (HRP). The various types of photoreceptors located within the dendritic field of the HRP-filled horizontal cells were identified either as rods or as one of the three chromatic types of cones; the latter were identified by the presence and colors of their oil droplets in the inner segments. The synaptic contacts between photoreceptors and labeled horizontal cells were then investigated by light and electron microscopy of serial sections on three LHCs, two BHCs, and one THC. LHCs made synaptic contacts with about 100 photoreceptors, including rods and three chromatic types of cones; two-thirds of these photoreceptors contacted the cell body and the remaining its axon terminal. BHCs contacted about 30 cones; red-, green-, and blue-sensitive cones in the ratio of 3:4:1. THC contacted 20 cones; red- and blue-sensitive cones in the...Continue Reading

References

Jan 1, 1976·Cold Spring Harbor Symposia on Quantitative Biology·A Kaneko, H Shimazaki
Feb 20, 1975·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·J H Scholes
Jan 1, 1979·Vision Research·H F Leeper, D R Copenhagen
Dec 15, 1978·The Journal of Comparative Neurology·H F Leeper
Jan 1, 1976·Vision Research·W K Stell, F I Hárosi
Jan 1, 1976·Vision Research·S Yazulla
Jan 1, 1976·Vision Research·R E Marc, H G Sperling
Feb 15, 1975·The Journal of Comparative Neurology·W K Stell, D O Lightfoot
Apr 1, 1986·The Journal of Physiology·A Kaneko, M Tachibana
Jan 1, 1974·Vision Research·T SaitoT Tomita
Apr 1, 1973·The Journal of Physiology·E J Simon
Oct 1, 1973·The Journal of Physiology·M G FuortesE J Simon
Jul 1, 1974·The Journal of Physiology·M G Fuortes, E J Simon
Jan 1, 1965·Cold Spring Harbor Symposia on Quantitative Biology·T Tomita
Apr 1, 1971·The Journal of Physiology·D A BaylorP M O'Bryan
Feb 1, 1969·The Journal of Cell Biology·A Lasansky
Jan 20, 1982·The Journal of Comparative Neurology·S F SchaefferJ E Heuser
Sep 1, 1958·American Journal of Ophthalmology·E J MACNICHOL, G SVAETICHIN
Jun 1, 1964·The American Journal of Physiology·S KLAHR, N S BRICKER

❮ Previous
Next ❯

Citations

Jun 1, 1990·Journal of Neuroscience Methods·J AmmermüllerH Kolb
Feb 25, 2003·Progress in Retinal and Eye Research·Gilad TwigIdo Perlman
Sep 29, 1998·The European Journal of Neuroscience·J AmmermüllerI Perlman
Apr 11, 1995·Proceedings of the National Academy of Sciences of the United States of America·P WitkovskyA Akopian
Jun 1, 1994·The Journal of General Physiology·S L Stone
Aug 6, 2009·The Journal of Comparative Neurology·Yong N LiJohn E Dowling
Sep 1, 1989·The European Journal of Neuroscience·H. WässleJ. Röhrenbeck
May 15, 2012·Progress in Retinal and Eye Research·Wallace B Thoreson, Stuart C Mangel
Jul 17, 1995·The Journal of Comparative Neurology·J AmmermüllerH Kolb
Mar 22, 1990·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·R F Dacheux, E Raviola
Jan 22, 1990·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·M Tauchi
May 1, 1990·Visual Neuroscience·C A Dvorak, A M Granda
Sep 1, 1988·The Journal of Comparative Neurology·P WitkovskyE D MacDonald
Mar 1, 1990·The Journal of Comparative Neurology·P AhneltH Kolb
Feb 22, 1990·The Journal of Comparative Neurology·T Ohtsuka, K Kawamata

❮ 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.