Microfilariae recurrence in Polynesian Wuchereria bancrofti carriers treated with repeated single doses of 100 micrograms/kg of ivermectin.
Identifieur interne : 012B26 ( Main/Exploration ); précédent : 012B25; suivant : 012B27Microfilariae recurrence in Polynesian Wuchereria bancrofti carriers treated with repeated single doses of 100 micrograms/kg of ivermectin.
Auteurs : J L Cartel [Polynésie française] ; J P Moulia-Pelat ; P. Glaziou ; L N Nguyen ; S. Chanteau ; J F Roux ; A. SpiegelSource :
- Transactions of the Royal Society of Tropical Medicine and Hygiene [ 0035-9203 ]
Descripteurs français
- KwdFr :
- Adolescent, Adulte, Adulte d'âge moyen, Animaux, Calendrier d'administration des médicaments, Filariose lymphatique (parasitologie), Filariose lymphatique (traitement médicamenteux), Humains, Ivermectine (usage thérapeutique), Mâle, Porteur sain (traitement médicamenteux), Récidive, Wuchereria bancrofti (isolement et purification), Études de suivi.
- MESH :
- isolement et purification : Wuchereria bancrofti.
- parasitologie : Filariose lymphatique.
- traitement médicamenteux : Filariose lymphatique, Porteur sain.
- usage thérapeutique : Ivermectine.
- Adolescent, Adulte, Adulte d'âge moyen, Animaux, Calendrier d'administration des médicaments, Humains, Mâle, Récidive, Études de suivi.
English descriptors
- KwdEn :
- Adolescent, Adult, Animals, Carrier State (drug therapy), Drug Administration Schedule, Elephantiasis, Filarial (drug therapy), Elephantiasis, Filarial (parasitology), Follow-Up Studies, Humans, Ivermectin (therapeutic use), Male, Middle Aged, Recurrence, Wuchereria bancrofti (isolation & purification).
- MESH :
- chemical , therapeutic use : Ivermectin.
- drug therapy : Carrier State, Elephantiasis, Filarial.
- isolation & purification : Wuchereria bancrofti.
- parasitology : Elephantiasis, Filarial.
- Adolescent, Adult, Animals, Drug Administration Schedule, Follow-Up Studies, Humans, Male, Middle Aged, Recurrence.
Abstract
Forty-six Polynesian carriers of Wuchereria bancrofti were treated with 3 successive single doses of ivermectin, 100 micrograms/kg, given every 6 months. Immediate microfilaricidal activity of ivermectin was excellent in all carriers, since residual mean microfilaraemia levels, 2 d after each of the 3 treatments, were less than 1% of pretreatment levels. Before initial treatment, geometric mean microfilaraemia was 500 microfilaria (mf)/ml for the whole group (range 21-6398 mf/ml); 6 months after each successive treatment it was 197, 108 and 87 mg/ml, respectively, 39.4, 21.6 and 17.4% of the pre-initial treatment level. By considering the mean percentage recurrent level at 6 months after the 3rd treatment (36.8%) as a threshold, it was possible to classify the carriers into 2 groups: 17 in whom the percentage recurrent level was > 36.8% and who were considered as 'fast repopulating' individuals, and the remaining 29 who were considered as 'slow repopulating' individuals. In the latter group, 6 months after each of the 3 treatments, the recurrent microfilaremia levels were 22.7%, 8.0% and 4.9% of the pre-initial treatment level, respectively, while they were 95.1%, > 100% and > 100% in the former. The constant recurrence of mf suggests that ivermectin, at a dosage of 100 micrograms/kg, had no effect on adult worms in 'fast repopulating' individuals, whereas the progressive lessening in recurrence of mf suggests some activity (sterilizing or killing) of ivermectin on W. bancrofti macrofilariae in 'slow repopulating' individuals.(ABSTRACT TRUNCATED AT 250 WORDS)
PubMed: 8249089
Affiliations:
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Glaziou</name></author><author><name sortKey="Nguyen, L N" sort="Nguyen, L N" uniqKey="Nguyen L" first="L N" last="Nguyen">L N Nguyen</name></author><author><name sortKey="Chanteau, S" sort="Chanteau, S" uniqKey="Chanteau S" first="S" last="Chanteau">S. Chanteau</name></author><author><name sortKey="Roux, J F" sort="Roux, J F" uniqKey="Roux J" first="J F" last="Roux">J F Roux</name></author><author><name sortKey="Spiegel, A" sort="Spiegel, A" uniqKey="Spiegel A" first="A" last="Spiegel">A. 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Immediate microfilaricidal activity of ivermectin was excellent in all carriers, since residual mean microfilaraemia levels, 2 d after each of the 3 treatments, were less than 1% of pretreatment levels. Before initial treatment, geometric mean microfilaraemia was 500 microfilaria (mf)/ml for the whole group (range 21-6398 mf/ml); 6 months after each successive treatment it was 197, 108 and 87 mg/ml, respectively, 39.4, 21.6 and 17.4% of the pre-initial treatment level. By considering the mean percentage recurrent level at 6 months after the 3rd treatment (36.8%) as a threshold, it was possible to classify the carriers into 2 groups: 17 in whom the percentage recurrent level was > 36.8% and who were considered as 'fast repopulating' individuals, and the remaining 29 who were considered as 'slow repopulating' individuals. In the latter group, 6 months after each of the 3 treatments, the recurrent microfilaremia levels were 22.7%, 8.0% and 4.9% of the pre-initial treatment level, respectively, while they were 95.1%, > 100% and > 100% in the former. The constant recurrence of mf suggests that ivermectin, at a dosage of 100 micrograms/kg, had no effect on adult worms in 'fast repopulating' individuals, whereas the progressive lessening in recurrence of mf suggests some activity (sterilizing or killing) of ivermectin on W. bancrofti macrofilariae in 'slow repopulating' individuals.(ABSTRACT TRUNCATED AT 250 WORDS)</div></front></TEI><affiliations><list><country><li>Polynésie française</li></country></list><tree><noCountry><name sortKey="Chanteau, S" sort="Chanteau, S" uniqKey="Chanteau S" first="S" last="Chanteau">S. Chanteau</name><name sortKey="Glaziou, P" sort="Glaziou, P" uniqKey="Glaziou P" first="P" last="Glaziou">P. Glaziou</name><name sortKey="Moulia Pelat, J P" sort="Moulia Pelat, J P" uniqKey="Moulia Pelat J" first="J P" last="Moulia-Pelat">J P Moulia-Pelat</name><name sortKey="Nguyen, L N" sort="Nguyen, L N" uniqKey="Nguyen L" first="L N" last="Nguyen">L N Nguyen</name><name sortKey="Roux, J F" sort="Roux, J F" uniqKey="Roux J" first="J F" last="Roux">J F Roux</name><name sortKey="Spiegel, A" sort="Spiegel, A" uniqKey="Spiegel A" first="A" last="Spiegel">A. Spiegel</name></noCountry><country name="Polynésie française"><noRegion><name sortKey="Cartel, J L" sort="Cartel, J L" uniqKey="Cartel J" first="J L" last="Cartel">J L Cartel</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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