Hyal Health Dictionary

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Hyal: From 1 Different Sources

Hyaluronidase

An enzyme made by traumatized cartilage (to soften and regenerate itself when injured) sperm cells (to dissolve the protective layer around an ovum), the spleen (to speed up hydrolysis), added to an IM injection (so it doesn’t get surrounded by connective tissue and never disperse) and produced by some really nasty bacteria so they can dissolve connective tissue and get deep into the body. Hyaluronic acid is the target, and it is a basic mucopolysacharide rivet, keeping large masses of polymerized compounds in the state of constant colloid jello (or more technically, a hydrogel facilitant)... hyaluronidase

Hyaline Membrane Disease

A form of ACUTE RESPIRATORY DISTRESS SYNDROME (ARDS) found in premature infants and some of those born by CAESAREAN SECTION, characterised by the onset of di?culty in breathing a few hours after birth. Most require extra oxygen and many need mechanical ventilation for a few days or even weeks. Recovery is the rule, although the most severely affected may die or suffer damage from oxygen lack. In this condition the ALVEOLITIS and the ?ner BRONCHIOLES of the lungs are lined with a dense membrane. The cause of the condition is a de?ciency of SURFACTANT in the lung passages which adversely affects gas exchanges in the alveoli.

Treatment includes the full gamut of neonatal intensive care, as well as speci?c therapy with PULMONARY SURFACTANT.... hyaline membrane disease

Hyaline

Tissue material that has a glass-like appearance when stained and viewed under the microscope. It occurs in a variety of tissues and diseases, particularly ACUTE RESPIRATORY DISTRESS SYNDROME (ARDS), hyaline degeneration of arterioles, and alcoholic liver disease.... hyaline

Asteroid Hyalosis

1. a degenerative condition, formerly known as asteroid hyalitis, in which tiny deposits of calcium are suspended in the vitreous humour. They are more commonly seen in the elderly and usually cause no decrease in vision. 2. see synchysis scintillans.... asteroid hyalosis

Hyalin

n. a clear glassy material produced as the result of degeneration in certain tissues, particularly connective tissue and epithelial cells.... hyalin

Hyaline Cartilage

the most common type of *cartilage: a bluish-white elastic material with a matrix of chondroitin sulphate in which fine collagen fibrils are embedded.... hyaline cartilage

Hyalitis

n. inflammation of the *vitreous humour of the eye. See also asteroid hyalosis.... hyalitis

Hyaloid Artery

a fetal artery lying in the *hyaloid canal of the eye and supplying the lens.... hyaloid artery

Hyaloid Canal

a channel within the vitreous humour of the *eye. It extends from the centre of the optic disc, where it communicates with the lymph spaces of the optic nerve, to the posterior wall of the lens.... hyaloid canal

Hyaloid Membrane

the transparent membrane that surrounds the *vitreous humour of the eye, separating it from the retina.... hyaloid membrane

Hyaluronic Acid

an acid *mucopolysaccharide that acts as the binding and protective agent of the ground substance of connective tissue. It is also present in the synovial fluid around joints and in the vitreous and aqueous humours of the eye.... hyaluronic acid

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