Decay
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  Decay



Decay

    Destruction of tooth structure caused by toxins produced by bacteria.

RELATED TERMS
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Bacteria
Single-celled microorganisms which can exist either as independent (free-living) organisms or as parasites (dependent upon another organism for life).



SIMILAR TERMS
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Deca-durabolin
Deca-durabolin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): nandrolone decanoate.

Decabid
Decabid is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): indecainide hydrochloride.

Decaderm
Decaderm is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): dexamethasone.

Decadron
Dexamethasone. A glucocorticosteroid medication used to reduce brain tissue swelling.

Decadron with xylocaine
Decadron with xylocaine is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): dexamethasone sodium phosphate; lidocaine hydrochloride.

Decadron-la
Decadron-la is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): dexamethasone acetate.

Decalcification
Loss of calcium from the bones or teeth.

Decalcification, Pathologic
The loss of calcium salts from bones and teeth. Bacteria may be responsible for this occurrence in teeth. Old age may be a factor contributing to calcium loss, as is the presence of diseases such as rheumatoid arthritis.

Decalcification, Pathological
The loss of calcium salts from bones and teeth. Bacteria may be responsible for this occurrence in teeth. Old age may be a factor contributing to calcium loss, as is the presence of diseases such as rheumatoid arthritis.

Decamethonium Compounds
Compounds that contain the decamethylenebis(trimethyl)ammonium radical. These compounds frequently act as neuromuscular depolarizing agents.

Decamine
A topical bacteriostat that is available as various salts. It is used in wound dressings and mouth infections and may also have antifungal action, but may cause skin ulceration.

Decanoates
Salts and esters of the 10-carbon monocarboxylic acid-decanoic acid.

Decanoic Acids
10-carbon saturated monocarboxylic acids.

Decanoyl CoA Dehydrogenase
Enzymes that catalyze the conversion of saturated fatty acid CoA complexes to unsaturated fatty acid CoA complexes in the presence of any acceptor. They include EC 1.3.1.8, EC 1.3.99.3 and EC 1.14.99.5.

Decapeptyl
A long-acting GONADORELIN analog agonist. It has been used in the treatment of prostatic cancer, ovarian cancer, precocious puberty, endometriosis, and to induce ovulation for in vitro fertilization.

Decapryn
Decapryn is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): doxylamine succinate.

Decarbazine
An antineoplastic agent. It has significant activity against melanomas. (from Martindale, The Extra Pharmacopoeia, 31st ed, p564)

Decarboxycystine
A radiation-protective agent that interferes with sulfhydryl enzymes. It may also protect against carbon tetrachloride liver damage.

Decarboxylase, 5-Hydroxytryptophan
An enzyme group with broad specificity. The enzymes decarboxylate a range of aromatic amino acids including dihydroxyphenylalanine (DOPA DECARBOXYLASE), tryptophan, and hydroxytryptophan. EC 4.1.1.28.

Decarboxylase, Glutamate
A pyridoxal-phosphate protein that catalyzes the alpha-decarboxylation of L-glutamic acid to form gamma-aminobutyric acid and carbon dioxide. The enzyme is found in bacteria and in invertebrate and vertebrate nervous systems. It is the rate-limiting enzyme in determining GAMMA-AMINOBUTYRIC ACID levels in normal nervous tissues. The brain enzyme also acts on L-cysteate, L-cysteine sulfinate, and L-aspartate. EC 4.1.1.15.

Decarboxylase, Glutamic Acid
A pyridoxal-phosphate protein that catalyzes the alpha-decarboxylation of L-glutamic acid to form gamma-aminobutyric acid and carbon dioxide. The enzyme is found in bacteria and in invertebrate and vertebrate nervous systems. It is the rate-limiting enzyme in determining GAMMA-AMINOBUTYRIC ACID levels in normal nervous tissues. The brain enzyme also acts on L-cysteate, L-cysteine sulfinate, and L-aspartate. EC 4.1.1.15.

Decarboxylase, Histidine
An enzyme that catalyzes the decarboxylation of histidine to histamine and carbon dioxide. It requires pyridoxal phosphate in animal tissues, but not in microorganisms. EC 4.1.1.22.

Decarboxylase, Hydroxytryptophan
An enzyme group with broad specificity. The enzymes decarboxylate a range of aromatic amino acids including dihydroxyphenylalanine (DOPA DECARBOXYLASE), tryptophan, and hydroxytryptophan. EC 4.1.1.28.

Decarboxylase, Ornithine
A pyridoxal-phosphate protein, believed to be the rate-limiting compound in the biosynthesis of polyamines. It catalyzes the decarboxylation of ornithine to form putrescine, which is then linked to a propylamine moiety of decarboxylated S-adenosylmethionine to form spermidine. EC 4.1.1.17.

Decarboxylase, Pyruvate
Catalyzes the decarboxylation of an alpha keto acid to an aldehyde and carbon dioxide. Thiamine pyrophosphate is an essential cofactor. In lower organisms, which ferment glucose to ethanol and carbon dioxide, the enzyme irreversibly decarboxylates pyruvate to acetaldehyde. EC 4.1.1.1.

Decarboxylase, Pyruvic
Catalyzes the decarboxylation of an alpha keto acid to an aldehyde and carbon dioxide. Thiamine pyrophosphate is an essential cofactor. In lower organisms, which ferment glucose to ethanol and carbon dioxide, the enzyme irreversibly decarboxylates pyruvate to acetaldehyde. EC 4.1.1.1.

Decarboxylase, Tryptophan
An enzyme group with broad specificity. The enzymes decarboxylate a range of aromatic amino acids including dihydroxyphenylalanine (DOPA DECARBOXYLASE), tryptophan, and hydroxytryptophan. EC 4.1.1.28.

Decarboxylase, Tyrosine
A pyridoxal-phosphate protein that catalyzes the conversion of L-tyrosine to tyramine and carbon dioxide. The bacterial enzyme also acts on 3-hydroxytyrosine and, more slowly, on 3-hydroxyphenylalanine. (From Enzyme Nomenclature, 1992) EC 4.1.1.25.

Decarboxylase, Uroporphyrinogen
One of the enzymes active in heme biosynthesis. It catalyzes the decarboxylation of uroporphyrinogen III to coproporphyrinogen III by the conversion of four acetic acid groups to four methyl groups. EC 4.1.1.37.

Decarboxylases
Enzymes that catalyze the addition of a carboxyl group to a compound (carboxylases) or the removal of a carboxyl group from a compound (decarboxylases). EC 4.1.1.

Decarboxylases, Aromatic-L-Amino-Acid
An enzyme group with broad specificity. The enzymes decarboxylate a range of aromatic amino acids including dihydroxyphenylalanine (DOPA DECARBOXYLASE), tryptophan, and hydroxytryptophan. EC 4.1.1.28.

Decarboxylation
The removal of a carboxyl group, usually in the form of carbon dioxide, from a chemical compound.

Decarboxylations
The removal of a carboxyl group, usually in the form of carbon dioxide, from a chemical compound.

Decaris
An antihelminthic drug that has been tried experimentally in rheumatic disorders where it apparently restores the immune response by increasing macrophage chemotaxis and T-lymphocyte function. Paradoxically, this immune enhancement appears to be beneficial in rheumatoid arthritis where dermatitis, leukopenia, and thrombocytopenia, and nausea and vomiting have been reported as side effects. (From Smith and Reynard, Textbook of Pharmacology, 1991, p435-6)

Decaspray
Decaspray is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): dexamethasone.

Decatur County Hospital
Decatur County Hospital is a hospital in Leon, Iowa (USA).

Decatur Memorial Hospital
Decatur Memorial Hospital is a hospital in Decatur, Illinois (USA).

Decavanadate
Oxyvanadium ions in various states of oxidation. They act primarily as ion transport inhibitors due to their inhibition of Na(+)-, K(+)-, and Ca(+)-ATPase transport systems. They also have insulin-like action, positive inotropic action on cardiac ventricular muscle, and other metabolic effects.

Decay Accelerating Factor
Glycoproteins broadly distributed among hematopoietic and non-hematopoietic cells. CD55 prevents the assembly of C3 convertase or accelerates the disassembly of preformed convertase, thus blocking the formation of the membrane attack complex.

Decay, Dental
Localized destruction of the tooth surface initiated by decalcification of the enamel followed by enzymatic lysis of organic structures and leading to cavity formation. If left unchecked, the cavity may penetrate the enamel and dentin and reach the pulp. The three most prominent theories used to explain the etiology of the disase are that acids produced by bacteria lead to decalcification; that micro-organisms destroy the enamel protein; or that keratolytic micro-organisms produce chelates that lead to decalcification.

Decay-Accelerating Factor
Glycoproteins broadly distributed among hematopoietic and non-hematopoietic cells. CD55 prevents the assembly of C3 convertase or accelerates the disassembly of preformed convertase, thus blocking the formation of the membrane attack complex.

Decayed, Missing, and Filled Teeth
""Decayed, missing and filled teeth,"" a routinely used statistical concept in dentistry.



PREVIOUS AND NEXT TERMS
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Dopa decarboxylase
An enzyme present in the body that converts levodopa to dopamine.

Dyskinesia
An involuntary movement including athetosis and chorea.

Dystrophin
A protein, a chemical substance made by muscle fibers.

DDS
Doctor of Dental Surgery - equivalent to DMD.

DMD
Doctor of Medical Dentistry - equivalent to DDS.

Decay

Deciduous teeth
Commonly called "baby teeth," the first set of (usually) twenty teeth.

Dentin
Inner layer of tooth structure, immediately under the surface enamel.

Dental implant
A (usually) titanium cylinder surgically placed in the bone of the upper or lower jaw to provide support for a dental restoration or appliance.

Dentition
The arrangement of natural or artificial teeth in the mouth.

Denture
Removable (partial or complete) set of artificial teeth.

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