(n.) A perennial plant (Pyrethrum, / Chrysanthemum, Parthenium) allied to camomile, having finely divided leaves and white blossoms; -- so named from its supposed febrifugal qualities.
Example Sentences:
(1) A bioassay based on inhibition of the secretory activity of blood platelets by extracts of feverfew in comparison with parthenolide was also used.
(2) Extracts of the herb feverfew inhibit human blood platelet aggregation and secretion induced by a number of agents in-vitro and this may relate to the beneficial effects of feverfew in migraine.
(3) The results indicate that feverfew may have a vasoprotective effect in addition to its effects on platelets.
(4) Seventeen patients who ate fresh leaves of feverfew daily as prophylaxis against migraine participated in a double blind placebo controlled trial of the herb: eight patients received capsules containing freeze dried feverfew powder and nine placebo.
(5) Patch tests were negative for another 30 plants, including cocklebur (Xanthium strumarium), dog fennel (Anthemis cotula, fleabane (Erigeron strigosus), sneezeweed (Helenium autumnale), and feverfew (Tanacetum parthenium).
(6) The precise nature of the sulphydryl groups that are susceptible to feverfew and are involved in platelet aggregation and the release reaction have not yet been defined.
(7) Extracts of feverfew (Tanacetum parthenium) inhibited secretory activity in blood platelets and polymorphonuclear leucocytes (PMNs).
(8) Feverfew itself did not induce the formation of disulphide-linked protein polymers in platelets but polymer formation occurred when aggregating agents were added to feverfew-treated platelets.
(9) Three physicochemical methods (HPLC, NMR spectroscopy, and HPLC of a derivative) have been used to measure parthenolide in authenticated Tanacetum parthenium (feverfew) and in several commercial purported feverfew products.
(10) They also modify the interaction of platelets with collagen substrates: feverfew extracts inhibit both platelet spreading and formation of thrombus-like platelet aggregates on the collagen surface.
(11) Crude chloroform extracts of fresh feverfew leaves (rich in sesquiterpene lactones) and of commercially available powdered leaves (lactone-free) produced dose-dependent inhibition of the generation of thromboxane B2 (TXB2) and leukotriene B4 (LTB4) by ionophore- and chemoattractant-stimulated rat peritoneal leukocytes and human polymorphonuclear leukocytes.
(12) It is a simple, inexpensive, and reproducible high-throughput bioassay suitable for quality control of feverfew, Tanacetum parthenium, a crude drug with proven migraine prophylactic activity that is being considered for governmental registration and regulation.
(13) Inhibition of anti-IgE-induced histamine release by feverfew extract was observed when the drug was added simultaneously with anti-IgE and the inhibitory activity increased only slightly when the drug was preincubated with the cells for 5 min before anti-IgE stimulation.
(14) It was shown that feverfew extract (FE) inhibited the deposition of [51Cr]-labelled platelets on both CIII and CIV in a dose-dependent way.
(15) Positive patch test reactions were 2+ for dandelion (Taraxacum officinale), false ragweed (Ambrosia acanthicarpa), giant ragweed (Ambrosia trifida), short ragweed (Ambrosia artemisifolia), sagebrush (Artemisia tridentata), wild feverfew (Parthenium hysterophorus), yarrow (Achillea millifolium), and tansy (Tanacetum vulgare) and 1+ for Dahlia species and English ivy (Hedera helix).
(16) In this respect feverfew differs from cromoglycate and quercetin.
(17) There was a highly significant variance between the frequencies of SCE in the matched pairs of migraine patients but this was not related to age, sex or feverfew exposure.
(18) Parthenolide appears to be mainly responsible for the antisecretory effects of extracts of feverfew.
(19) The pharmacological properties of feverfew may thus be due to cytotoxicity, although the time course of the events described in this paper is different from those where feverfew appears to have more specific inhibitory effects.
(20) Two elderly individuals suffering from acute recurrent dermatitis of light-exposed skin between spring and autumn were shown to be allergic to feverfew (Tanacetum parthenium) of the Compositae family.
Headache
Definition:
(n.) Pain in the head; cephalalgia.
Example Sentences:
(1) The main result of the correspondence analysis is a geometric map of this relationship showing how the relative frequencies of headache types change with age.
(2) She had three attacks of severe migrainous headache accompanied with nausea and vomiting within three weeks.
(3) In contrast, in those subjects with chronic non-migrainous headache, the administration of piribedil had no effect.
(4) The vasodilator effect of both calcium antagonists was responsible for side effects, of which the most common were flushing, edema, headache, and palpitations.
(5) A 68-year-old male was hospitalized because of headache, nausea, and disturbance of consciousness.
(6) The ophthalmic headache's crisis is caused, in fact, by a spasm of convergence on an unknown exophory of which the amplitude of fusion is satisfying, and the presence of which can only be seen with test under screen.
(7) Case 3 was that of a 70-year-old female with left impaired vision and frontal headache.
(8) After the fourth dose of L-asparaginase, he presented with severe headache and a CT scan showed a right temporal infarct.
(9) Frequency of symptoms like dizziness, headache, lachrymation, burning sensation in eyes, nausea and anorexia, etc, were much more in the exposed workers.
(10) Both the use of analgesics and the frequency of headache showed a significant increase for patients with post-traumatic headache when compared with a "control group" of 41 patients with unchanged headache and when compared with all patients with headache before the trauma.
(11) Pheochromocytoma may present without the typical features of paroxysmal or sustained hypertension, headache, increased sweating, and palpitations.
(12) These data suggest that the mechanism leading to a migraine attack can be operative 8-48 h before the headache begins and is possibly dopaminergically mediated.
(13) We found that, compared with younger patients, older headache patients had more tension headache and less migraine headache.
(14) The levels of E-type prostaglandins were measured in patients with facial and headaches.
(15) A 26-year-old man addicted to alcohol was admitted to hospital with headache and rhinorrhoea.
(16) --The frequency of common clinical manifestations (eg, headache, fever, and rash) and laboratory findings (eg, leukocyte and platelet counts and serum chemistry abnormalities) of patients with infectious diseases was tabulated.
(17) Childhood headache attacks resulted to be less frequent, less severe and with a shorter duration than in adult patients.
(18) Headache and vertigo were not linked with exposure to vibration in forestry and a significant part of the numbness reported may be due to the carpal tunnel syndrome.
(19) Headache, vegetative und neurological symptoms are frequent but not necessary companions.
(20) Furthermore, 97.6%, 95.7% and 94.8% of the subjects reported that depression, headache and sleep disturbances, respectively, had disappeared during therapy.