Abstract：
:Aciclovir (synonym: acyclovir) causes abnormal thymus development in rats. After treatment on day 10 of gestation a weight reduction of the organ is obvious in 21-day-old fetuses which persists postnatally. Adult male rats exposed in utero to one or three injections of 100 mg aciclovir/kg body wt given to the dam on day 10 of pregnancy showed a reduction of the thymus weight to 333 +/- 158 mg and 276 +/- 61 mg (control: 428 +/- 92 mg; n = 10). Corresponding alterations were detectable in female offspring. Liver weight was also decreased and spleen weight (in relation to body wt) was significantly increased in the offspring after the three exposures. In a host resistance model with Trichinella spiralis the function of the immune system of rats prenatally exposed to aciclovir was examined. Six weeks postnatally 10-12 randomly selected male rat offspring of one control and two treatment groups (1 or 3 injections of 100 mg aciclovir/kg body wt on day 10 of gestation) were infected orally with 500 Trichinella spiralis muscle larvae. Before and several times after the infection blood was taken from a tail vein or obtained by decapitation for examination of the antibody titers (IgM, IgG, IgA, IgE) to antigens of T. spiralis. Six weeks after the infection the weight of relevant organs was determined and tongue preparations were used for T. spiralis muscle larvae counting. Aciclovir exposed animals showed a different immune response than control rats. IgM titers in both treatment groups were higher than in controls two weeks after the infection but not different by the end of the experiment.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Arch Toxicoljournal_title
Archives of toxicologyauthors
Stahlmann R,Korte M,Van Loveren H,Vos JG,Thiel R,Neubert Ddoi
10.1007/BF01973385keywords:
subject
Has Abstractpub_date
1992-01-01 00:00:00pages
551-9issue
8eissn
0340-5761issn
1432-0738journal_volume
66pub_type
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