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Periodicity of Wuchereria bancrofti var. pacifica filariasis in French Polynesia. 1993

J P Moulia-Pelat, and P Glaziou, and S Chanteau, and L Nguyen-Ngoc, and Y Marcet, and R Gardines, and P M Martin, and J L Cartel
Institut Territorial de Recherches Medicales Louis Malarde, Papeete, Tahiti, Polynesie Francaise.

In 1992, a study on microfilaremia periodicity was carried out on 12 Wuchereria bancrofti carriers in the Marquesas islands. Blood samples were collected simultaneously every 4 hours during a 48 hour period by finger-prick and venipuncture for determination of microfilaremia by both blood film and membrane filtration technique methods, and for determination of antigenemia. The membrane filtration results showed no significant nycthemeral variations between the microfilaria densities at hours 16:00, 20:00, 24:00, 04:00, 08:00 and 12:00. Conversely, the blood film method showed a significant difference between the microfilaria densities: the microfilaremia was higher during the day (12:00-20:00 hours) than during the night (24:00-08:00 hours). As for antigenemia, using Og 4 C3 monoclonal antibody, there was no significant fluctuation during 48 hours. These results confirm that W. bancrofti var. pacifica is subperiodic and diurnal in French Polynesia. In particular, they substantiate the validity of examining venous blood by the membrane filtration technique as the judgment criterion of choice in therapeutic trials and of examining capillary blood during peak hours by the blood film method for evaluating the endemic level in a population.

UI MeSH Term Description Entries
D008297 Male Males
D008842 Microfilariae The prelarval stage of Filarioidea found in the blood and tissues of mammals, birds and intermediate hosts (vector). Microfilaria
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010507 Periodicity The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian). Cyclicity,Rhythmicity,Biological Rhythms,Bioperiodicity,Biorhythms,Biological Rhythm,Bioperiodicities,Biorhythm,Cyclicities,Periodicities,Rhythm, Biological,Rhythmicities,Rhythms, Biological
D011114 Polynesia The collective name for the islands of the central Pacific Ocean, including the Austral Islands, Cook Islands, Easter Island, HAWAII; NEW ZEALAND; Phoenix Islands, PITCAIRN ISLAND; SAMOA; TONGA; Tuamotu Archipelago, Wake Island, and Wallis and Futuna Islands. Polynesians are of the Caucasoid race, but many are of mixed origin. Polynesia is from the Greek poly, many + nesos, island, with reference to the many islands in the group. (From Webster's New Geographical Dictionary, 1988, p966 & Room, Brewer's Dictionary of Names, 1992, p426) Easter Island,Tahiti,Cook Islands,French Polynesia,Niue,Tokelau,Tokelau Islands,Wake Island,Wallis and Futuna Islands
D001769 Blood The body fluid that circulates in the vascular system (BLOOD VESSELS). Whole blood includes PLASMA and BLOOD CELLS.
D004605 Elephantiasis, Filarial Parasitic infestation of the human lymphatic system by WUCHERERIA BANCROFTI or BRUGIA MALAYI. It is also called lymphatic filariasis. Bancroftian Elephantiasis,Brugian Filariasis,Brugoa malayi Infection,Elephantiasis, Bancroftian,Filarial Elephantiasis,Filariasis, Lymphatic,Lymphatic Filariasis,Wuchereria bancrofti Infection,Bancroftian Filariasis,Elephantiasis, Malayi,Malayi Filariasis,Bancroftian Elephantiases,Bancroftian Filariases,Brugian Filariases,Brugoa malayi Infections,Filarial Elephantiases,Filariasis, Bancroftian,Filariasis, Brugian,Filariasis, Malayi,Infection, Brugoa malayi,Infection, Wuchereria bancrofti,Lymphatic Filariases,Malayi Elephantiases,Malayi Elephantiasis,Malayi Filariases,Wuchereria bancrofti Infections
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000704 Analysis of Variance A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable. ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses

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