What's the difference between pyrexia and pyrogen?
Pyrexia
Definition:
(n.) The febrile condition.
Example Sentences:
(1) Host responses and neuroendocrinological changes during pyrexia in childhood were studied.
(2) These findings suggest that oral or axillary temperature measurements are inadequate screening tests for pyrexia in the elderly.
(3) An outbreak of the pruritus, pyrexia, haemorrhagic syndrome affected eight of a herd of 175 cows which was divided into two groups of 115 and 60 according to yield.
(4) A 59-year-old woman hospitalised because of dyspnea and a heart murmur in a context of pyrexia was found to have evidence of obstruction of the pulmonary arterial system, clearly defined by ultrasonography, catheterisation and angiography and Imatron scan.
(5) Wound infection, wound haematoma and one unexplained pyrexia were the only complications seen.
(6) When the colostrum-deprived newborn calves immunized with the rs-52 strain were challenged with the virulent NMK7 strain of BRS virus, they exhibited no pyrexia or other abnormal clinical signs at all.
(7) A 22-year-old man presented with multiple raised erythematous skin lesions, pyrexia and epistaxis.
(8) An intermittent pyrexia was also seen without infective etiology.
(9) The indirect hemagglutination test is of diagnostic value in cases with involvement of the internal organs or pyrexia of unknown origin.
(10) They all developed high temperatures, pyrexia, diarrhoea, vomitting or itching and some had convulsions.
(11) Disseminated aspergillosis attributable to Aspergillus deflectus was diagnosed in a Springer Spaniel with lethargy, lameness, anorexia, weight loss, pyrexia, lymphadenopathy, hematuria, and urinary incontinence.
(12) Toxic reactions included pyrexia, headache, and malaise, which were mild to moderate.
(13) The morbidity including postoperative pyrexia revealed no difference between drained and undrained patients.
(14) It revealed that the adverse reactions were nausea, vomiting, abdominal colic, diarrhea, dizziness, headache and pyrexia.
(15) Two children presented with pyrexia, macular erythroderma, vomiting, hypotension and rapid deterioration of consciousness.
(16) Although the mechanism is not yet understood, it appears to be a coincidence of delayed hypersensitivity of the tuberculin type and a less-delayed phenomenon of excessive local edema associated with local lymphadenopathy and short-lasting symptoms of malaise and pyrexia.
(17) All the infected heifers developed clinical trypanosomiasis manifested by massive parasitaemia, fluctuating pyrexia, anaemia, dull hair coat, emaciation, jugular pulse and enlarged superficial lymph nodes.
(18) A positive reaction was noted in 92 of 481 ophthalmological cases; two of 17 lymphadenopathy cases; none in 36 cerebral palsy cases and four of 40 miscellaneous cases comprising pyrexia of unknown aetiology, recurrent abortions etc.
(19) The only manifestation of infection of the baby's mother was a slight pyrexia three days before delivery which subsided quickly after treatment with ampicillin.
(20) Both viruses caused persistent pyrexia and leukopenia, the NSW strain 4 to 5 days and the virulent strain 3 days, after inoculation.
Pyrogen
Definition:
(n.) Electricity.
(n.) A poison separable from decomposed meat infusions, and supposed to be formed from albuminous matter through the agency of bacteria.
Example Sentences:
(1) Central injections of 40 and 80 ng of [Nle4,D-Phe7]-alpha-MSH caused hypothermia in afebrile rabbits, whereas 20 and 10 ng, which had no effect on afebrile body temperature, caused greater than 40% reduction in leukocytic pyrogen-induced fever.
(2) In the active phase all the patients exhibited an abrupt increase in the activity of alkaline and acid phosphatase in blood neutrophils, a drop in the level of CP (in 69%), a rise in the activity of MP (in 32%); pyrogenal did not induce any capacity for restoring HCT (in 44%).
(3) MAbs W1-W3 derived from mice, which were immunized with whole cells of the strain Moulton, reacted with the serogroups Canicola, Icterohaemorrhagiae and Pyrogenes.
(4) Interleukin-1 alpha (IL-1 alpha) and interleukin-1 beta (IL-1 beta) are thought to be endogenous pyrogens, i.e., to mediate fever production; warm-sensitive (W) and cold-sensitive (C) neurons in the preoptic area (POA) are presumed to be the ultimate targets of endogenous pyrogens.
(5) The Limulus amebocyte lysate test has been used for determination of pyrogens in sugar of different qualities.
(6) The minimum pyrogenic dose in both new-born and adult guinea-pigs was 0.25 microliter, but the 0 to 5-day old animals which responded with a fever to this dose were few in number and large in weight; 'small-for age' neonates became hypothermic.
(7) Twelve serovars included in the study were: australis, autumnalis, ballum, bataviae, bratislava, canicola, copenhageni, grippotyphosa, hardjo, pomona, pyrogenes, and tarassovi.
(8) Another property shared by IL 1 and IL 6 is their pyrogenicity.
(9) IL-6 induction was also observed after pretreatment with indomethacin, indicating that the effect was dissociated from the pyrogenic activity of IL-1.
(10) Protein malnutrition leads to diminished pyrogenicity of macrophage culture supernatants and may be at least partly responsible for the decreased febrile response seen in the malnourished animals.
(11) In its monomer form, endogenous pyrogen is a potent fever-producing substance and mediates fever by its action on the thermoregulatory center.
(12) Immobilized histidine and immobilized histamine could be used for the removal of natural pyrogens contaminating various useful low-molecular-weight compounds as well as high-molecular-weight compounds such as proteins.
(13) Reusing hemodialyzers more than 20 times and, in some instances, also using manual reprocessing systems was significantly associated with clustering of pyrogenic reactions regardless of the type of germicide used.
(14) The effects of various kinds of drugs on the pyrogenicity of toxic shock syndrome toxin 1 (TSST-1) and its capacity to enhance the lethal effects of endotoxin in rabbits were studied.
(15) The hyperthermic response to pyrogen was not potentiated by caffeine or theophylline administered i.p.
(16) With regard to Group I, there was a high number of positive (32.3%) and a variation in the frequency of serovars, the results being as follows: L. butembo (38.8%), L. pomona (33.3%), L. bratislava (31.4%), L. icterohemorragica (12.9%), L. borincana (3.7%) and finally L. canicola, L. pyrogenes, L. wolffii and L. bataviae (1.8%).
(17) Parenterals, sterile preparations intended to be injected in man or animal, should be free from pyrogenic substances which are able to raise the thermostatic setting in the hypothalamus.
(18) Titers for Leptospira interrogans serovars grippotyphosa, pyrogenes, djasiman, butembo, and pomona were demonstrated.
(19) The fever responses of the animals were remeasured 3 days later, and in every case there was a marked enhancement of the fevers produced, using the same doses of endogenous pyrogen that were used earlier.
(20) The results were compared with rabbit pyrogen tests.