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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

erythrocyte volume
Volume of circulating erythrocytes. It is usually measured by radioisotope dilution technique. ... (12 Dec 1998) ...

erythrocytes
Cells that carry oxygen to all parts of the body. Also called red blood cells (RBCs). ... (12 Dec 1998) ...

erythrocythemia
Synonym: polycythemia. ... Origin: erythro-+ G. Kytos, cell, + haima, blood ... (05 Mar 2000) ...

erythrocytic
Pertaining to an erythrocyte. ... (05 Mar 2000) ...

erythrocytic series
The cells in the various stages of development in the red bone marrow leading to the formation of the erythrocyte, e.g., erythroblasts, normoblasts, erythrocytes. ... (05 Mar 2000) ...

erythrocytoblast
Synonym: erythroblast. ... Origin: erythro-+ G. Kytos, cell, + blastos, germ ... (05 Mar 2000) ...

erythrocytolysin
Synonym for haemolysin ... <protein> Bacterial exotoxins that can lyse erythrocytes. ... (18 Nov 1997) ...

erythrocytolysis
Synonym: haemolysis. ... Origin: erythrocyte + G. Lysis, loosening ... (05 Mar 2000) ...

erythrocytometer
An instrument for counting the red blood cells; Hayden used this term to denote an instrument to measure the diameter of red blood cells. ... Origin: erythrocyte + G. Metron, measure ... (05 Mar 2000) ...

erythrocytopenia
Synonym for erythropenia ... Deficiency in the number of red blood cells. ... Synonym: erythrocytopenia. ... Origin: erythrocyte + G. Penia, poverty ... (05 Mar 2000) ...

erythrocytopoiesis
Synonym for erythropoiesis ... <haematology> Process of production of erythrocytes in the marrow in adult mammals. ... A pluripotent stem cell (CFU) produces, by a series of divisions, committed stem cells (BFU Es) that give rise to CFU Es, cells that will divide only a few more times to produce mature erythrocytes. Each stem cell product can g …

erythrocytorrhexis
A partial erythrocytolysis in which particles of protoplasm escape from the red blood cells, which then become crenated and deformed. ... Synonym: erythrorrhexis. ... Origin: erythrocyte + G. Rhexis, rupture ... (05 Mar 2000) ...

erythrocytoschisis
A breaking up of the red blood cells into small particles that morphologically resemble platelets. ... Origin: erythrocyte + G. Schisis, a splitting ... (05 Mar 2000) ...

erythrocytosis
<haematology> An abnormal elevation in the number of red blood cells. Normal RBC counts should be in the range of 4.6-6.2 million per cubic millimetre for males and 4.2-5.4 million per cubic millimetre for females. ... Erythrocytosis may occur for physiologic reasons (to increase oxygen carrying capacity) in those with chronic obstructive pulm …

erythrocyturia
Red blood cells in urine. ... (05 Mar 2000) ...

erythrodegenerative
Pertaining to or characterised by degeneration of the red blood cells. ... (05 Mar 2000) ...

erythroderma
A non-specific designation for intense and usually widespread reddening of the skin from dilatation of blood vessels, often preceding, or associated with exfoliation. ... Synonym: erythrodermatitis. ... Origin: erythro-+ G. Derma, skin ... (05 Mar 2000) ...

erythroderma desquamativum
Severe, extensive seborrheic dermatitis with exfoliative dermatitis, generalised lymphoadenopathy, and diarrhoea in the newborn; frequently occurs in undernourished, cachectic children. ... Synonym: Leiner's disease. ... (05 Mar 2000) ...

erythroderma exfoliativa
Synonym for keratolysis exfoliativa ... Familial continual skin peeling characterised by a separation of stratum corneum in leaflike flakes occurring everywhere except on the palms and soles; the cause is unknown. ... Synonym: erythema exfoliativa, erythroderma exfoliativa. ... (05 Mar 2000) ...

erythroderma psoriaticum
Extensive exfoliative dermatitis simulating psoriasis. ... (05 Mar 2000) ...

erythrodermatitis
Synonym for erythroderma ... A non-specific designation for intense and usually widespread reddening of the skin from dilatation of blood vessels, often preceding, or associated with exfoliation. ... Synonym: erythrodermatitis. ... Origin: erythro-+ G. Derma, skin ... (05 Mar 2000) ...

erythrodontia
Reddish discoloration of the teeth, as may occur in porphyria. ... Origin: erythro-+ G. Odous, tooth ... (05 Mar 2000) ...

erythrodysesthesia syndrome
<syndrome> Tingling sensation of the palms and soles, progressing to severe pain and tenderness with erythema and oedema; caused by continuous infusion therapy. ... (05 Mar 2000) ...

erythrogen
<chemistry> Carbon disulphide; so called from certain red compounds which it produces in combination with other substances. ... A substance reddened by acids, which is supposed to be contained in flowers. ... A crystalline substance obtained from diseased bile, which becomes blood-red when acted on by nitric acid or ammonia. ... Origin: Gr. Red …

erythrogenesis imperfecta
Synonym for congenital hypoplastic anaemia ... Congenital nonregenerative, familial hypoplastic, or pure red cell anaemia; erythrogenesis imperfecta; Diamond-Blackfan syndrome; autosomal recessive normocytic normochromic anaemia resulting from congenital hypoplasia of the bone marrow, which is grossly deficient in erythroid precursors while other el …

erythrogenic
1. Producing red, as causing an eruption or a red colour sensation. ... 2. Pertaining to the formation of red blood cells. ... Origin: erythro-+ -gen, producing ... (05 Mar 2000) ...

erythrogenic toxin
<protein> Toxin produced by strains of Streptococcus pyogenes responsible for scarlet fever. Three antigenic variants of the toxin are known. It is a small protein that is complexed with hyaluronic acid and can intensify the effects of other toxins such as endotoxin and streptolysin O. ... (18 Nov 1997) ...

erythrogonium
The precursor of an erythrocyte; occasionally refers to the erythropoietic tissue as a whole. ... Origin: erythro-+ G. Gone, generation ... (05 Mar 2000) ...

erythroid cell
Cell that will give rise to erythrocytes. ... (18 Nov 1997) ...

erythroid progenitor cells
Committed, erythroid stem cells derived from myeloid stem cells. The progenitor cells develop in two phases: erythroid burst-forming units (bfu-e) followed by erythroid colony-forming units (cfu-e). Bfu-e differentiate into cfu-e on stimulation by erythropoietin, and then further differentiate into erythroblasts when stimulated by other factors. …

erythroid transcription factor
<molecular biology> Transcription factor that binds to regulatory regions of genes expressed in erythroid cells. ... (18 Nov 1997) ...

erythroidin
A nicotinic cholinergic antagonist which unlike most members of this group of agents, is a tertiary amine and hence enters the central nervous system. ... (05 Mar 2000) ...

erythrokeratoderma variabilis
A dermatosis characterised by hyperkeratotic plaques of bizarre, geographic configuration, associated with erythrodermic areas that may vary remarkably in size, shape, and position from day to day; onset is usually in the first year of life; autosomal dominant inheritance. ... Synonym: keratosis rubra figurata. ... (05 Mar 2000) ...

erythrokeratodermia
The association of erythoderma and hyperkeratosis, which may be symptomatic at sites of chronic injury or inherited; ataxia appears later in life; symmetrical progressive erythrokeratoderma is inherited as an autosomal dominant gene and does not involve the palms and soles. ... Origin: erythro-+ G. Keras, horn, + derma, skin, + -ia, condition ... (05 …

erythrokinetics
A consideration of the kinetics of erythrocytes from their generation to destruction; erythrokinetic studies are sometimes made in cases of anaemia to evaluate the balance between erythrocyte production and destruction. ... Origin: erythro-+ G. Kinesis, movement ... (05 Mar 2000) ...

erythrol
Synonym: erythritol. ... (05 Mar 2000) ...

erythrol tetranitrate
Synonym for erythrityl tetranitrate ... <chemical> A vasodilator with general properties similar to nitroglycerin. ... Pharmacological action: vasodilator agents. ... Chemical name: 1,2,3,4-Butanetetrol, tetranitrate, (R*,S*)- ... (12 Dec 1998) ...

erythroleukaemia
<haematology, oncology> A rare cancer of the blood affecting immature red blood cells. ... Origin: Gr. Haima = blood ... (13 Nov 1997) ...

erythroleukaemic cell
<haematology> Abnormal precursor (virally transformed) of mouse erythrocytes that can be grown in culture and induced to differentiate by treatment with, for example: DMSO. ... See: Friend cell. ... (18 Nov 1997) ...

erythroleukosis
A condition resembling leukaemia in which the erythropoietic tissue is affected in addition to the leukopoietic tissue. ... (05 Mar 2000) ...

erythrolysin
Synonym for haemolysin ... <protein> Bacterial exotoxins that can lyse erythrocytes. ... (18 Nov 1997) ...

erythrolysis
Synonym for haemolysis ... <haematology> Disruption of the integrity of the red cell membrane causing release of haemoglobin. ... Haemolysis may be caused by bacterial haemolysins, by antibodies that cause complement dependent lysis, by placing red cells in a hypotonic solution or by defects in the red cell membrane. ... Origin: Gr. Lysis = diss …

erythromelalgia
Disease marked by paroxysmal, bilateral vasodilatation, particularly of the extremities, with burning pain, and increased skin temperature and redness. ... (12 Dec 1998) ...

erythromelia
Diffuse idiopathic erythema and atrophy of the skin of the lower limbs. ... Origin: erythro-+ G. Melos, limb ... (05 Mar 2000) ...

erythromycin
<drug> An antibiotic that disrupts bacterial protein synthesis by binding totheir ribosomes and inhibiting translocation. ... (09 Oct 1997) ...

erythromycin C-12 hydroxylase
<enzyme> Required for the c-12 hydroxylation of the macrolactone ring in erythromycin synthesis; mw 44 kD; from saccharopolyspora erythraea; amino acid sequence given in first source ... Registry number: EC 1.14.- ... Synonym: hydroxylase eryk, eryk gene product, cytochrome p-450(eryk) ... (26 Jun 1999) ...

erythromycin esterase
<enzyme> Hydrolyzes the lactone ring of erythromycin ... Registry number: EC 3.1.1.- ... (26 Jun 1999) ...

erythromycin estolate
<chemical> Lauryl sulfate salt of propionic ester of erythromycin. Found to cause jaundice. Essential hepatotoxic property is due to the propionyl ester linkage at the 2' position. ... Pharmacological action: antibiotics, macrolide. ... Chemical name: Erythromycin, 2'-propanoate, dodecyl sulfate (salt) ... (12 Dec 1998) ...

erythromycin ethylsuccinate
<chemical> Erythromycin, 2'-(ethyl butanedioate). An ester of erythromycin having the same antibacterial effect as erythromycin but with better absorption and fewer side effects. ... Pharmacological action: antibiotics, macrolide. ... Chemical name: Erythromycin, 2'-(ethyl butanedioate) ... (12 Dec 1998) ...

erythromycin glucoheptonate
A salt of the macrolide antibiotic, erythromycin. ... (05 Mar 2000) ...

erythromycin propionate
A salt of the macrolide antibiotic, erythromycin. ... (05 Mar 2000) ...

erythromycin stearate
A salt of the macrolide antibiotic, erythromycin. ... (05 Mar 2000) ...

erythron
The total mass of circulating red blood cells, and that part of the haematopoietic tissue from which they are derived. ... (05 Mar 2000) ...

erythroneocytosis
The presence in the peripheral circulation of regenerative forms of red blood cells. ... Origin: erythrocyte + G. Neos, new, + kytos, cell, + -osis, condition ... (05 Mar 2000) ...

erythronormoblastic anaemia
Anaemia characterised by the presence of large numbers of nucleated red cells (normoblasts and erythroblasts) in the peripheral blood. Seen especially in newborns with haemolytic anaemia, such as that caused by Rh or ABO incompatibility. ... Synonym: erythroblastic anaemia. ... (05 Mar 2000) ...

erythropenia
Deficiency in the number of red blood cells. ... Synonym: erythrocytopenia. ... Origin: erythrocyte + G. Penia, poverty ... (05 Mar 2000) ...

erythrophagia
Phagocytic destruction of red blood cells. ... Origin: erythrocyte + G. Phago, to eat, + -ia ... (05 Mar 2000) ...

erythrophagocytosis
Phagocytosis of erythrocytes. ... (05 Mar 2000) ...

erythrophil
1. Staining readily with red dyes. ... Synonym: erythrophilic. ... 2. A cell or tissue element that stains red. ... Origin: erythro-+ G. Philos, fond ... (05 Mar 2000) ...

erythrophilic
Synonym for erythrophil ... 1. Staining readily with red dyes. ... Synonym: erythrophilic. ... 2. A cell or tissue element that stains red. ... Origin: erythro-+ G. Philos, fond ... (05 Mar 2000) ...

erythrophore
<biology> Chromatophores that have red pigment. ... (18 Nov 1997) ...

erythrophore reaction
A reddish colouration (nuptial colouration) caused in certain male fishes (bitterling) by the injection of the gonad hormone. ... Synonym: fish test. ... (05 Mar 2000) ...

erythroplakia
A reddened patch with a velvety surface found in the mouth. ... (12 Dec 1998) ...

erythroplasia
A condition of the mucous membrane characterised by erythematous papular lesions. ... (12 Dec 1998) ...

erythropoiesis
<haematology> Process of production of erythrocytes in the marrow in adult mammals. ... A pluripotent stem cell (CFU) produces, by a series of divisions, committed stem cells (BFU Es) that give rise to CFU Es, cells that will divide only a few more times to produce mature erythrocytes. Each stem cell product can give rise to 2exp11 mature red …

erythropoietic
Pertaining to or characterised by erythropoiesis. ... (05 Mar 2000) ...

erythropoietic hormone
Generally, any hormone that promotes the formation of red blood cells, e.g., testosterone, ... Synonym: erythropoietin. ... (05 Mar 2000) ...

erythropoietic porphyria
A classification of porphyria that includes congenital erythropoietic porphyria and erythropoietic protoporphyria. ... (05 Mar 2000) ...

erythropoietic protoporphyria
<haematology> A group of metabolic disorders that result from a disturbance in porphyrin metabolism, causing increased formation and excretion of porphyrin or its precursors. ... Acute intermittent porphyria is a rare inherited (autosomal dominant) form that can result in abdominal pain, photosensitivity and neurological disturbances. The vari …

erythropoietin
<growth factor, hormone> Erythropoietin is a Glycoprotein (46 kD) hormone produced by specialised cells in the kidneys that regulates the production of red blood cells in the marrow. ... These cells are sensitive to low arterial oxygen concentration and will release erythropoietin when oxygen is low. Erythropoietin stimulates the bone marrow t …

erythropoietin, recombinant
Erythropoietin prepared by recombinant DNA technology. ... (12 Dec 1998) ...

erythroprosopalgia
A disorder similar to erythromelalgia, but with the pain and redness occurring in the face. ... Origin: erythro-+ G. Prosopon, face, + algos, pain ... (05 Mar 2000) ...

erythropsia
An abnormality of vision in which all objects appear to be tinged with red. ... Synonym: red vision. ... Origin: erythro-+ G. Ops, eye ... (05 Mar 2000) ...

erythropyknosis
Alteration of red blood cells to develop the so-called 'brassy bodies,' under the influence of the malarial parasite. ... Origin: erythro-+ G. Pyknos, dense ... (05 Mar 2000) ...

erythrorrhexis
Synonym: erythrocytorrhexis. ... Origin: erythrocyte + G. Rhexis, rupture ... (05 Mar 2000) ...

erythrose
An aldotetrose epimeric with threose. The d-isomer plays a role in intermediary metabolism. ... Erythrose 4-phosphate, a phosphorylated derivative of erythrose that serves as an important intermediate in the pentose phosphate pathway. ... (05 Mar 2000) ...

erythrose 4-phosphate dehydrogenase
<enzyme> From E coli; catalyses erythrose 4-phosphate to erythronate 4-phosphate in the presence of nad ... Registry number: EC 1.2.1.- ... Synonym: erythrose 4-p dehydrogenase, gapb gene product ... (26 Jun 1999) ...

erythrosin B
Tetraiodofluorescein, a fluorescent red acid dye, used as a counterstain in histology and as a fluorescent indicator. ... (05 Mar 2000) ...

erythrosine
<chemical> 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro(isobenzofuran-1(3h),9'-(9h)xanthen)-3-one disodium salt. A vital stain and colouring agent used in dentistry to disclose plaque. It is used as a tissue stain and dye in foods and pharmaceuticals, may inhibit some enzymes, and is preferentially absorbed by certain tumour cells. ... Pharmacol …

erythrovirus
A genus of the family parvoviridae, subfamily parvovirinae, and containing one known species parvovirus b19, human. ... (12 Dec 1998) ...

erythroxyline
Name given to cocaine by its discoverer, Gaedeke, in 1855. ... (05 Mar 2000) ...

erythrulose
The 2-keto analog of erythrose; the only ketotetrose. ... (05 Mar 2000) ...

erythruria
The passage of red urine. ... Origin: erythro-+ G. Ouron, urine ... (05 Mar 2000) ...

Es
Symbol for einsteinium. ... (05 Mar 2000) ...

ES46.5K esterase
<enzyme> Hepatic, microsomal enzyme that catalyses hydrolysis of phthalate esters ... Registry number: EC 3.1.1.- ... (26 Jun 1999) ...

Esbach
Georges H., French physician, 1843-1890. ... See: Esbach's reagent. ... (05 Mar 2000) ...

Esbach's reagent
Picric acid, citric acid, and water (in the proportions 1, 2, and 97) used for the detection of albumin in the urine. ... (05 Mar 2000) ...

escalop
1. <zoology> A bivalve shell of the genus Pecten. See Scallop. ... 2. A regular, curving indenture in the margin of anything. See Scallop. 'So many jags or escalops.' ... 3. The figure or shell of an escalop, considered as a sign that the bearer had been on a pilgrimage to the Holy Land. Hence: A bearing or a charge consisting of an escalop she …

escape
1. To flee, and become secure from danger; often followed by from or out of. 'Haste, for thy life escape, nor look behind' (Keble) ... 2. To get clear from danger or evil of any form; to be passed without harm. 'Such heretics . . . Would have been thought fortunate, if they escaped with life.' (Macaulay) ... 3. To get free from that which confines or …

escape beat
Escaped beat, an automatic beat, usually arising from the A-V junction or ventricle, occurring after the next expected normal beat has defaulted; it is therefore always a late beat, terminating a longer cycle than the normal. ... Synonym: escape contraction. ... (05 Mar 2000) ...

escape conditioning
The technique whereby an organism learns to terminate unpleasant or punishing stimuli by making the appropriate new response which stops the delivery of such stimuli. ... Compare: avoidance conditioning. ... Synonym: escape training. ... (05 Mar 2000) ...

escape contraction
Synonym for escape beat ... Escaped beat, an automatic beat, usually arising from the A-V junction or ventricle, occurring after the next expected normal beat has defaulted; it is therefore always a late beat, terminating a longer cycle than the normal. ... Synonym: escape contraction. ... (05 Mar 2000) ...

escape impulse
One or more impulse's (atrial, junctional, or ventricular) arising as a result of delay in the formation or arrival of impulses from the prevailing pacemaker. ... (05 Mar 2000) ...

escape interval
The time between the last beat of the patient's basic rhythm (ectopic or sinus beat) and a beat from a spontaneous escape focus or the initial electronic pacemaker impulse (a preset interval in the circuitry); it may be either a shorter or a longer time period than the pulse interval. ... (05 Mar 2000) ...

escape phenomenon
Failure of the pupil in an eye with optic neuritis to maintain constriction as both eyes are alternately stimulated with light. ... (05 Mar 2000) ...

escape reaction
Innate response elicited by sensory stimuli associated with a threatening situation, or actual confrontation with an enemy. ... (12 Dec 1998) ...

escape rhythm
Three or more consecutive impulses at a rate not exceeding the upper limit of the inherent pacemaker; extreme range of impulse formation at the sinoatrial node is between 40 to 180 impulses per minute, that of the atrioventricular junction is normally 40 to 60 impulses per minute, and the normal rate of the ventricular myocardium (idioventricular r …

escape training
Synonym for escape conditioning ... The technique whereby an organism learns to terminate unpleasant or punishing stimuli by making the appropriate new response which stops the delivery of such stimuli. ... Compare: avoidance conditioning. ... Synonym: escape training. ... (05 Mar 2000) ...

escape ventricular contraction
An escape beat arising in the ventricle. ... (05 Mar 2000) ...

escape-capture bigeminy
Paired beats, each couplet consisting of an escape beat followed by a conducted sinus beat. ... (05 Mar 2000) ...