The effect of intraperitoneal (i.p.) infections induced by inoculations of 30 or 150 Brugia pahangi third-stage larvae (L3) on the development of infections and lymphatic lesions induced by subsequent homologous subcutaneous (s.c.) inoculations were compared in the present study. Lymphatic lesion severity, as judged by the numbers of lymph thrombi present, and lymphatic lesion scores were significantly reduced in both groups of jirds with existing i.p. infections. The numbers of adult worms that developed, locations of these worms, and the subsequent microfilaremias did not differ significantly between groups. All jirds with i.p. infections developed similar antibody titers to crude somatic adult antigen as measured by ELISA. These levels did not change following s.c. infections. Immediate and delayed footpad swelling responses were also similar in all groups. Results of these experiments support and extend previous studies indicating that i.p. infections of B. pahangi induce a hyporesponsive state in jirds to subsequent s.c. infections without significantly affecting the subsequent parasite burden. This effect appears to be independent of the numbers of L3 inoculated i.p. prior to lymphaticinduced infection. Circulating antibody titers and footpad swelling responses to B. pahangi antigen were not reduced in jirds with the hyporesponsive lymphatic inflammatory response and do not correlate with this condition.
The Journal of Parasitology is the official publication of the American Society of Parasitologists (ASP). It has been in print continuously since 1914, when it was founded by Henry Baldwin Ward. The journal focuses on general parasitology, as well as parasites of medical, veterinary, and economic importance. Most of the emphasis rests with eukaryotic parasites, although vectors for prokaryotic organisms and viruses are also included. The journal is printed at Allen Press in Lawrence, Kansas, in six issues per year. Institutional subscriptions are available. Membership in ASP includes receipt of the Journal of Parasitology, a quarterly Newsletter, and abstracts for the annual meetings; students can join at a much reduced rate. The journal is online via BioOne. The editor of the journal is Dr. Michael V.K. Sukhdeo. For further information regarding publication in the journal, contact the editorial office at journalofparasitology@gmail.com. For information about membership in ASP, contact the society:, http://amsocparasit.org/. For subscription information, contact asp@allenpress.com.
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The Journal of Parasitology
© 1987 The American Society of Parasitologists