| LNAA | large neutral amino acid |
|---|---|
| NAA | N-acetyl aspartate; naphthaleneacetic acid; neutral amino acid; neutron activation analysis; neutrop... |
| ND | Doctor of Naturopathy; nasal deformity; natural death; Naval Dispensary; neonatal death; neoplastic ... |
| NEP | negative expiratory pressure; nephrology; neutral endopeptidase; no evidence of pathology |
| neut | neuter, neutral; neutrophil |
| lipid histiocytosis | Histiocytosis with cytoplasmic accumulation of lipid, either phospholipid (Niemann-Pick disease) or glucocerebroside (Gaucher's disease). (05 Mar 2000) |
|---|---|
| lipid keratopathy | Occurrence of fats in an area of corneal vascularization. (05 Mar 2000) |
| lipid mobilization | The breakdown of stored triglyceride in adipose tissue with the release of free fatty acids and glycerol. Depot fat hydrolysis is catalyzed by a lipase in response to pituitary lipid mobilization factors (lmf), various hormones, serotonin, or hepatotoxins such as carbon tetrachloride. (12 Dec 1998) |
| lipid-mobilizing hormone | <protein> Polypeptide hormone (_ form: 9894D, 91 residues, _ form has only residues 1-58 of _) from the pituitary hypophysis, that is of particular interest because it is the precursor of endorphins, which are released by proteolysis. Promotes lipolysis and acts through the adenylyl cyclase system. Part of the ACTH group of hormones. (18 Nov 1997) |
| lipid peroxidation | Peroxidase catalyzed oxidation of lipids using hydrogen peroxide as an electron acceptor. (12 Dec 1998) |
| lipid peroxides | Peroxides produced in the presence of a free radical by the oxidation of unsaturated fatty acids in the cell in the presence of molecular oxygen. The formation of lipid peroxides results in the destruction of the original lipid leading to the loss of integrity of the membranes. They therefore cause a variety of toxic effects in vivo and their formation is considered a pathological process in biological systems. Their formation can be inhibited by antioxidants, such as vitamin e, structural separation or low oxygen tension. (12 Dec 1998) |
| lipid pneumonia | Lipoid pneumonia, pulmonary condition marked by inflammatory and fibrotic changes in the lungs due to the inhalation of various oily or fatty substances, particularly liquid petrolatum, or resulting from accumulation in the lungs of endogenous lipid material, either cholesterol from obstructive pneumonitis or following fracture of a bone; phagocytes containing lipid are usually present. Synonym: oil pneumonia. (05 Mar 2000) |
| lipid profile | Pattern of lipids in the blood. (A lipid profile usually includes the total cholesterol, high density lipoprotein (hdl) cholesterol, triglycerides, and the calculated low density lipoprotein (ldl) cholesterol. (12 Dec 1998) |
| lipid storage diseases | A series of disorders due to inborn errors in lipid metabolism resulting in the abnormal accumulation of lipids in the wrong places (examples include gaucher, fabry and niemann-pick diseases and metachromatic leukodystrophy). (12 Dec 1998) |
| Armillaria mellea neutral proteinase | <enzyme> Specific for lysine Registry number: EC 3.4.99.32 (26 Jun 1999) |
| ribosomal neutral proteinase | <enzyme> Ribosomal serine proteinase from rat liver ribosomes in cryptic form Registry number: EC 3.4.21.52 Synonym: cathepsin r (26 Jun 1999) |
| Staphylococcal neutral phosphatase | <enzyme> A surface-bound bacterial protein; highly cationic; shows maximum phosphatase activity at neutral pH; binds to immunoglobulin Registry number: EC 3.1.3.- Synonym: staphylococcal nptase, nptase (26 Jun 1999) |
| Staphylococcus aureus neutral proteinase | <enzyme> Included in the group of microbial metalloproteinases EC 3.4.24.4; ptrb protein is isolated from E coli; sakstar is recombinant staphylokinase Pharmacological action: fibrinolytic agents Registry number: EC 3.4.24.- Synonym: protease II, staphylokinase, staph aureus protease, staphylococcal protease, E coli protease, ptrb protein, sakstar, (26 Jun 1999) |
| neutral | 1. Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent. "The heart can not possibly remain neutral, but constantly takes part one way or the other." (Shaftesbury) 2. Neither good nor bad; of medium quality; middling; not decided or pronounced. "Some things good, and some things ill, do seem, And neutral some, in her fantastic eye." (Sir J. Davies) 3. <biology> Neuter. See Neuter. 4. <chemistry> Having neither acid nor basic properties; unable to turn red litmus blue or blue litmus red; said of certain salts or other compounds. Contrasted with acid, and alkaline. <chemistry> Neutral axis, Neutral surface, a salt formed by the complete replacement of the hydrogen in an acid or base; in the former case by a positive or basic, in the latter by a negative or acid, element or radical. Neutral tint, a bluish gray pigment, used in water colours, made by mixing indigo or other blue some warm colour. The shades vary greatly. Neutral vowel, the vowel element having an obscure and indefinite quality, such as is commonly taken by the vowel in many unaccented syllables. It is regarded by some as identical with the u in up, and is called also the natural vowel, as unformed by art and effort. Origin: L. Neutralis, fr. Neuter. See Neuter. Source: Websters Dictionary (01 Mar 1998) |
| neutral axis of straight beam | The axis perpendicular to the plane of loading of a beam at stresses within the proportional limit; it lies at the gravity axis of the cross-section of the beam. (05 Mar 2000) |