Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0033774 (pruritus)
 14,546 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To determine definitively whether or not the severity of the Mazzotti reaction was correlated with infection intensity, as determined by skin snip quantification, 21 infected Ghanian patients were evaluated during 7 days of treatment with 200 mg/day of diethylcarbamazine. Serial blood, urine and skin biopsy samples were collected during the progression of the Mazzotti reaction. Hypotension, fever, adenitis and pruritus were all correlated with infection intensity in these patients while arthralgia and tachycardia were not. Peripheral blood eosinopenia and neutrophilia also correlated with intensity of infection and appeared to reflect the accumulation of degranulating eosinophils around "mobilized" microfilariae that migrated from the dermis to the epidermis after diethylcarbamazine (DEC). Other mobilized microfilariae apparently were cleared by the liver and resulted in abnormal liver enzyme levels in the serum which, again, were directly correlated with the patients' microfilarial density. Though the severity of the Mazzotti reaction clearly correlated with intensity of infection, the different times of onset of symptoms, and cellular and serum chemistry changes indicate that there are probably multiple infection intensity-dependent mechanisms responsible for mediating this complex reaction.
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PMID:The Mazzotti reaction following treatment of onchocerciasis with diethylcarbamazine: clinical severity as a function of infection intensity. 400 68

Twenty immigrants from Mali and West Senegal were treated in Paris. Onchocerciasis was diagnosed by six skin snips using a Holth punch. Ivermectine was given in a single oral dose: ten patients were given 50 mcg/kg, three were given 75 mcg/kg and seven received 100 mcg/kg. No patients had ocular symptoms. The results were as follows: Pruritus disappeared rapidly in 9 out of 11 patients who itched before treatment. The microfilarial load decreased rapidly, especially in cases treated with 75 mcg/kg and 100 mcg/kg as all patients tested on day 60 were negative. Clinical signs of the Mazzotti reaction and ocular reactions were not observed following the treatment. Pruritus was briefly aggravated in only two patients. No cardiovascular, hematological, hepatic or renal toxicity was noted.
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PMID:[Treatment of human onchocerciasis with ivermectin]. 668 18

Diethylcarbamazine (DEC) administered orally to jirds and striped mice (300 mg/kg for five days) was effective against the microfilariae of Monanema globulosa in experimental infections. Based on the small numbers of animals used in this trial, it is questionable whether the drug had significant activity against the adult worms in pulmonary arteries. Densities of microfilariae in the ears (mf/mg) fell by 80-100% of pretreatment levels over a four week period following treatment. There was no apparent action of the developing embryos in utero, and in some rodents densities of microfilariae in the skin returned to 73-88% of pretreatment levels within 70 days. No microfilariae were detected in the blood or urine during treatment. Twenty-four hours after the first dose of DEC, many of the microfilariae in the dermis became surrounded by a local infiltration of neutrophils, eosinophils and histiocytes. Cellular reactions were accompanied by an acute pruritus in rodents, as indicated by scratching and distress exhibited soon after treatment: No reactions to microfilariae were seen in untreated rodents. Similarities between this response and the Mazzotti reaction induced by DEC in human onchocerciasis indicate that M. globulosa may be of value as a rodent model to study adverse drug reactions in Onchocerca volvulus infections.
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PMID:The action of diethylcarbamazine on the skin-dwelling microfilariae of Monanema globulosa (Nematoda: Filarioidea) in rodents. 671 Jun 1

Dermatological symptoms of onchocerciasis and microfilaria densities in the skin were studied in 108 infected persons in the Governorate of Taizz, and the levels of antifilarial antibodies and IgA, IgE, IgG, and IgM were determined in 75 of them. Predominantly in old men the generalized form of the disease was observed, which is characterized by symmetrical, mostly atrophic skin lesions, rather high microfilaria densities at various sites of the body and the presence of diagnostically unequivocal levels of antifilarial antibodies. In younger men, children and women of various age groups a localized form was observed, of which the typical features are: an intensely itching, mostly asymmetrical, well circumscribed onchodermatitis with or without oedema, pachydermia and darkening of the skin; considerable enlargement of several local lymph nodes; very or extremely low microfilaria density; the microfilariae are mostly restricted to the area of the skin lesion; manifestation of the microfilariae by a clear papular Mazzotti reaction after the application of microfilaricidal drugs; and diagnostically utilizable levels of antifilarial antibodies. The localized form can develop into the generalized form during later years. Intermediate and so far undefined forms, among which indeterminate forms may exist, are also seen. Patients with severe localized onchocerciasis demonstrated significantly higher antifilarial antibody levels than other infected persons. As a characteristic feature of onchocerciasis in the Yemen, onchocercomata were frequently found over the muscles of the calf, thigh and forearm distant from prominent bones. Onchocerciasis is endemic in all major wadis with permanent, westward flowing streams at altitudes of 300-1200 m between the southern Wadi Ghail and Wadi Surdud in the north and in some of their tributaries.
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PMID:Clinical, parasitological and serological studies on onchocerciasis in the Yemen Arab Republic. 716 62