Biomaterial Database

[The pathophysiology of retinal artery and vein thromboses (author's transl)]. 1977

M Tsacopoulos

The retinal blood flow is autoregulated. Retinal metabolic changes following PaCO2 and PaO2 variations, variably affect the arteriolar resistance to flow. It is postulated that PGE1 may play the role of mediator in the control of retinal blood flow. Retinal vascular obstruction leads to a circulatory disorder, but immediately physiopathological mechanisms (more or less efficient) tend to compensate again the circulatory disorder. For example, after arteriolar embolism the retrograde plasma flow starts immediately and the cells increase their anaerobic glycolytic activity to produce sufficient metabolic energy. In the case of vein thrombosis, the retrograde drainage develops collateral microvessels whose draining efficiency depends on their number and the surface of the thrombotic area.

UI	MeSH Term	Description	Entries
D010100	Oxygen	An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.	Dioxygen,Oxygen-16,Oxygen 16
D010313	Partial Pressure	The pressure that would be exerted by one component of a mixture of gases if it were present alone in a container. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Partial Pressures,Pressure, Partial,Pressures, Partial
D012039	Regional Blood Flow	The flow of BLOOD through or around an organ or region of the body.	Blood Flow, Regional,Blood Flows, Regional,Flow, Regional Blood,Flows, Regional Blood,Regional Blood Flows
D012160	Retina	The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent.	Ora Serrata
D012161	Retinal Artery	Central retinal artery and its branches. It arises from the ophthalmic artery, pierces the optic nerve and runs through its center, enters the eye through the porus opticus and branches to supply the retina.	Central Retinal Artery,Arteries, Central Retinal,Arteries, Retinal,Artery, Central Retinal,Artery, Retinal,Central Retinal Arteries,Retinal Arteries,Retinal Arteries, Central,Retinal Artery, Central
D012164	Retinal Diseases	Diseases involving the RETINA.	Disease, Retinal,Diseases, Retinal,Retinal Disease
D002245	Carbon Dioxide	A colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals.	Carbonic Anhydride,Anhydride, Carbonic,Dioxide, Carbon
D003097	Collateral Circulation	Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.	Blood Circulation, Collateral,Circulation, Collateral,Collateral Blood Circulation,Collateral Circulation, Blood,Blood Collateral Circulation,Circulation, Blood Collateral,Circulation, Collateral Blood,Collateral Blood Circulations,Collateral Circulations,Collateral Circulations, Blood
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012169	Retinal Vein	Central retinal vein and its tributaries. It runs a short course within the optic nerve and then leaves and empties into the superior ophthalmic vein or cavernous sinus.	Central Retinal Vein,Central Retinal Veins,Retinal Vein, Central,Retinal Veins,Retinal Veins, Central,Vein, Central Retinal,Vein, Retinal,Veins, Central Retinal,Veins, Retinal