(a.) resembling the chorion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball.
(n.) The choroid coat of the eye. See Eye.
Example Sentences:
(1) Once the normal variations are mastered, appreciation of retinal, choroidal, optic nerve, and vitreal abnormalities is possible.
(2) The authors describe a case of expulsive choroidal effusion which occurred in the course of a fistulating operation in a child with Sturge-Weber syndrome.
(3) On histopathologic examination there were microabscesses in the inner choroid and subretinal space, disrupting the outer retina but sparing the inner retina.
(4) In the choroid, VIP-immunoreactive fibers were seen mainly in close association with the choroidal blood vessels.
(5) Cerebral angiogram displayed a contralateral shift and an unrolling of the anterior cerebral artery, a lateral stretch of middle cerebral artery, a downward stretch of anterior choroidal artery and a tumor stain fed by the Heubner artery.
(6) For Rana catesbeiana Vf was 1.43 microliter min-1 or 0.2 microliter min-1 mg choroid plexus-1 and for Rana pipiens Vf was 0.2 microliter min-1 or 0.1 microliter min-1 mg choroid plexus-1.
(7) Because this transport system in the choroid plexus is normally responsible for the excretion of the serotonin metabolite from the brain to the plasma, accumulation of endogenously produced organic acids in the brain, secondary to reduced clearance by the choroid plexus, could be a contributing factor in the development of encephalopathy in children with medium-chain acyl-CoA dehydrogenase deficiency who have elevated levels of octanoic acid systematically.
(8) Two such eyes also had reduced tPA immunoreactivity in their choroidal vessels.
(9) Ultrasonically induced hyperthermia (4.75 MHz) and proton irradiation (160 meV) were evaluated alone and combined to treat experimental choroidal melanoma in 58 rabbit eyes.
(10) IGF-1 transcripts were not detected in ependymal lining or choroid plexus of the lateral ventricle.
(11) Hemorrhage in and beside the choroidal melanoma could be seen separately.
(12) The number of 125I-ANP binding sites in the choroid plexus of rats with kaolin-induced hydrocephalus was significantly higher as compared to findings in the control rats, whereas no differences in the binding affinity were observed 3 days and 3 weeks after the intracisternal injection of kaolin.
(13) The results showed that light adaptation did not influence CBF, in spite of the close relationship between the outer retina and choroidal circulation.
(14) The peripapillary choroidal circulation is of great interest because it supplies the papillary circulation.
(15) During a 4-year period, 83 pregnant women with fetal choroid plexus cysts were investigated in our unit.
(16) The cause was probably choroid plexitis resulting in obstruction of the cerebrospinal fluid pathway at the atrium.
(17) Lateral diffusion from the surrounding choroid into the optic nerve was detected but diffusion from the prelaminar optic nerve into the juxta-optic nerve retina was prevented by the Kuhnt intermediary tissue.
(18) The authors report a patient with nonsimultaneous choroidal and cutaneous melanomas.
(19) The number of rANP binding sites was much lower in both the subfornical organ and the choroid plexus of young and adult SHR when compared with normotensive controls.
(20) The authors report two cases of large, vascular choroid plexus papillomas that were detected at birth and surgically excised shortly thereafter.
Uvea
Definition:
(n.) The posterior pigmented layer of the iris; -- sometimes applied to the whole iris together with the choroid coat.
Example Sentences:
(1) Beta-Glucuronidase activity was higher in the anterior uvea but lower in the corneoscleral tissues.
(2) Phthisical eyes of 2 patients revealed clinically unsuspected, partially necrotic and partially vital malignant melanomas of the uvea and extensive intraocular ossification.
(3) Anterior segment involvement was slight or nonexistent, and damage to the retina and uvea was of a focal rather than of a diffuse nature.
(4) 125I-Albumin permeation was increased in the retina, choroid, and anterior uvea of rats fed 50% galactose for 3 weeks, 3 months, and 8 months versus controls, but was unchanged in the brain.
(5) There is controversy regarding the origin of the pigment-containing epithelioid cells in the uvea of eyes with sympathetic ophthalmia.
(6) In conscious animals 5 pmol kg-1 CGRP caused enhanced leakage from the blood vessels of the ciliary processes in those pre-treated with biperiden in order to abolish the cholinergic vasoconstrictor tone in the anterior uvea.
(7) Detectable mast cells in the anterior uvea of S-Ag-immunized Lewis rats decreased to 60% of control at 6 days postimmunization, recovered to 80% at 10 days, and dropped again to 16% at 13 days, with disease onset around 14 days.
(8) Histopathologic examination disclosed a diffuse malignant melanoma of the uvea, mixed cell type, with multiple cysts of the ciliary epithelium.
(9) Perchlorate (10(-4) M) and iodide (10(-4) or 10(-3) M) had no inhibitory effect while 10(-4) M p-aminohippuric acid had a significant inhibitory effect on the kidney cortex at a concentration of 10(-4) M and on the anterior uvea at 10(-3) M. 4.
(10) In STZ-D rats, 131I-BSA tissue clearance increased significantly (2- to 4-fold) in the anterior uvea, choroid-sclera, retina, sciatic nerve, aorta, new granulation tissue, diaphragm, and kidney but was unchanged in skin, forelimb muscle, and heart.
(11) The authors' results are consistent with the finding in animal experiments that blood flow to the retina, optic nerve, and uvea increases for a short time after oculopression (Jay et al., Acta Ophthalmol.
(12) Melanocytomas are pigmented tumors of the uvea and optic nerve head composed of plump polyhedral melanocytes which have been regarded as nevus cells.
(13) The dedifferentiated tumour in the enucleated eyes spread extensively within the anterior chamber and anterior uvea.
(14) The management of posterior penetrating ocular trauma includes thorough preoperative evaluation and exploration and careful debridement with excision or repositioning of the uvea.
(15) ET-1 also caused vasodilation in the anterior uvea.
(16) However, Ia was expressed in the anterior uvea epithelial cells in all eyes with LPS induced uveitis.
(17) The strongly vascularized anterior uvea is used as a carrier and a connecting link to the immune system.
(18) Thus, the anterior uvea in mammals may be one of the tissues exhibiting a cholinergic vasoconstriction phenomenon, found more commonly in lower vertebrates.
(19) Uvea-retina, synovial membrane, and articular cartilage antigen preparations inhibited the migration of leukocytes from patients with rheumatoid arthritis.
(20) No differences could be asserted in autoantibody frequencies according to disease location within the uvea.