| nicotine | <drug> A plant alkaloid from tobacco, blocks transmission at nicotinic synapses. (18 Nov 1997) |
|---|---|
| nicotine dehydrogenase | <enzyme> Mo-pterin-fe-s cluster- and fad-dependent enzyme composed of 3 unequal polypeptides; catalyses the conversion of nicotine, acceptor, and water to (s)-6-hydroxynicotine and reduced acceptor Registry number: EC 1.5.99.4 (26 Jun 1999) |
| nicotine oxidase | <enzyme> Cytochrome p-450 enzyme Registry number: EC 1.5.3.- (26 Jun 1999) |
| nicotine stomatitis | Heat stimulated lesions, usually on the palate, that begin with erythema and progress to multiple white papules with a red dot in the centre. The red dot represents a dilated, inflamed salivary duct orifice. (05 Mar 2000) |
| Bayer's patches | Sites of adhesion between the outer and cytoplasmic membranes of gram-negative bacteria. (18 Nov 1997) |
| Gottron's patches | <clinical sign> Gottron's patches are scaly, patchy redness over the knuckles and is seen in patients with dermatomyositis, an inflammatory muscle disorder. (see polymyositis). (20 Sep 2002) |
| Peyer's patches | Lymphoid organs located in the sub mucosal tissue of the mammalian gut containing very high proportions of IgA secreting precursor cells. The patches have B and T dependent regions and germinal centres. A specialised epithelium lies between the patch and the intestine. Involved in gut associated immunity. (18 Nov 1997) |
| cotton-wool patches | <clinical sign, ophthalmology> White, fuzzy areas on the surface of the retina (accumulations of cellular organelles) caused by damage (usually infarction) of the retinal fibre layer. Synonym: cotton-wool spots. (05 Mar 2000) |
| salmon patches | Red or purple-coloured vascular skin markings that develop shortly after birth. most are usually painless and benign. Some lesions (cavernous haemangiomas) will disappear or become harder to see as the child approaches school age. Localised steroid injections have been used successfully to reduce the size of a birthmark. (27 Sep 1997) |
| shagreen patches | <radiology> Normal-coloured plaques on trunk with firmer texture than normal skin, associated with tuberous sclerosis (12 Dec 1998) |
| smoker's patches | An obsolete term for leukoplakia. (05 Mar 2000) |
| soldier's patches | White plaques of hyalinised fibrous tissue situated in the epicardium overlying the right ventricle of the heart where it is not covered by lung. Synonym: soldier's patches. White macroscopic areas in the omentum, due to accumulation of macrophages and lymphocytes. Synonym: tache laiteuse. (05 Mar 2000) |
| abscess, skin | Medical term for a common boil. (12 Dec 1998) |
| allergy skin test | Test done on the skin to identify the allergy substance (allergen) triggering the allergic reaction. A small amount of the suspected allergy substance is placed on the skin. The skin is then gently scratched through the small drop with a special sterile needle. If the skin reddens and, more importantly, swells, then allergy to that substance is probable. (12 Dec 1998) |
| alligator skin | <dermatology> A group of cutaneous disorders characterised by increased or aberrant keratinisation, resulting in noninflammatory scaling of the skin. Many different metaphors have been used to describe the appearance and texture of the skin in the various types and stages of ichthyosis, for example alligator, collodion, crocodile, fish and porcupine skin. most ichthyoses are genetically determined, while some may be acquired and develop in association with various systemic diseases or be a prominent feature in certain genetic syndromes. The term is commonly used alone to refer to i. Vulgaris. (18 Nov 1997) |