{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T20:28:48Z","timestamp":1791404928601,"version":"4.3.3"},"reference-count":31,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2009,4,6]],"date-time":"2009-04-06T00:00:00Z","timestamp":1238976000000},"content-version":"unspecified","delay-in-days":10719,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[1979,12]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Microfilariae of <jats:italic>Brugia malayi<\/jats:italic> were obtained from the peritoneal cavities of infected gerbils and were then injected intravenously into mice. A sub-periodic, nocturnal microfilaraemia was produced. The level of microfilaraemia was proportional to the number of parasites injected, with approximately 1\u20133% of microfilariae being found in the peripheral circulation. The duration of microfilaraemia was proportional to the number of parasites injected; it subsided by 30 days after injection of 10<jats:sup>4<\/jats:sup> microfilariae but was still present at a low level 120 days after injection of 2 \u00d7 10<jats:sup>5<\/jats:sup> microfilariae. A transient splenomegaly developed after injection of microfilariae. Histopathological examination revealed large numbers of microfilariae free in the lumens of pulmonary small blood vessels and without any accompanying inflammatory reaction. Lesser numbers of microfilariae were seen in the cardiac blood and hepatic and renal blood vessels for the first few days after injection. There was cellular proliferation in the splenic white pulp and vascular congestion of the red pulp. Microfilariae labelled with <jats:sup>51<\/jats:sup>Cr were injected intravenously; 57% of radioactivity was found in the lungs, 8\u00b75% in the liver and 2\u00b79% in the spleen. Mice developed immediate hypersensitivity reactions to <jats:italic>B. malayi<\/jats:italic> antigen by 4 weeks after injection, but Arthus and delayed hypersensitivity reactions were not seen at any time. When mice which had been injected 5 months previously were challenged with a 2nd injection of microfilariae, there was an accelerated clearance of parasites over 2 weeks and a marked peripheral blood eosinophilia developed. In contrast with natural infections, in which the continuous production of microfilariae complicates assessment, this model provides a system in which factors controlling the circulation of microfilariae in the bloodstream can be studied independently.<\/jats:p>","DOI":"10.1017\/s0031182000053713","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T16:50:54Z","timestamp":1244220654000},"page":"303-316","source":"Crossref","is-referenced-by-count":20,"title":["<i>Brugia malayi<\/i> microfilaraemia in mice: a model for the study of the host response to microfilariae"],"prefix":"10.1017","volume":"79","author":[{"given":"D. I.","family":"Grove","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. S.","family":"Davis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K. 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