PMID: 19920552Apr 1, 1994Paper

Functional morphology of the episcleral vasculature in rabbits and dogs: presence of arteriovenous anastomoses

Journal of Glaucoma
J W Rohen, R H Funk

Abstract

Scanning electron microscopic analysis of corrosion casts of the intra- and episcleral vasculature in the limbic region of two species (rabbit and dog) revealed typical arteriovenous anastomoses representing shunts between the long radial arterioles, branches of the anterior ciliary arteries, and the episcleral venous plexus. The arteriovenous anastomoses consist of a small arteriolar segment and a wide, funnel-like venous segment. Using immunohistochemical techniques it was shown that the wall of the arteriolar segment consists of smooth muscle cells containing alpha-smooth muscle actin. In the dog, the vessel wall of the arteriovenous anastomoses also contain typical epithelioid cells, the structure of which was analyzed by transmission electron microscopy. In the episcleral vasculature, a capillary network is lacking, an elaborate wide venous plexus is developed instead. It is assumed that this plexus with the help of the newly described arteriovenous anastomoses may influence aqueous humor drainage and thereby also intraocular pressure.

Citations

Sep 1, 1994·Cell and Tissue Research·R H FunkJ Wörl
Jun 1, 1997·Comparative Biochemistry and Physiology. Part A, Physiology·F J CarrerasF González-Caballero
Jan 27, 1999·Progress in Retinal and Eye Research·E Lütjen-Drecoll
Mar 11, 2015·Journal of Ocular Pharmacology and Therapeutics : the Official Journal of the Association for Ocular Pharmacology and Therapeutics·Jeffrey W Kiel, Casey C Kopczynski
Feb 20, 2018·Veterinary Ophthalmology·Susan S LeeMichael R Robinson
Dec 11, 2017·Journal of Cataract and Refractive Surgery·Xu XuLingyun Cheng

❮ 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.