PMID- 8831899 OWN - NLM STAT- MEDLINE DCOM- 19970206 LR - 20200418 IS - 1046-7408 (Print) IS - 1600-0897 (Electronic) IS - 1046-7408 (Linking) VI - 36 IP - 1 DP - 1996 Jul TI - Maternal antibodies protect immunoglobulin deficient neonatal mice from mouse hepatitis virus (MHV)-associated wasting syndrome. PG - 33-9 AB - PROBLEM: Neonatal mice nursed by dams lacking immunoglobulins (Igs) may often suffer from lethal runting if raised under conventional conditions. The present study was performed in order to clarify a) the cause of the wasting syndrome and b) the protective role of antigen-specific milk antibodies. METHOD: Ig-deficient mouse embryos in a conventional environment were embryo-transferred to specified pathogen free (SPF) dams. Neonatal growth, mortality, and health status of mice from both environments was recorded. Suspected presence of mouse hepatitis virus (MHV) was tested by RT-PCR. Protective effects on neonatal mortality of milk containing different titers of anti-MHV antibodies were investigated in cross-fostering experiments. RESULTS: The SPF colony of Ig-deficient mice exhibited no breeding problems, whereas Ig-deficient neonates in the conventional environment suffered from lethal wasting syndrome. Serological screening of the mice kept in the two environments revealed that mice in the conventional room had high titers of antibodies against mouse hepatitis virus. Presence of MHV in runting neonates was confirmed by pathological examinations and RT-nested-PCR using MHV genome specific primers. Milk containing high titers of anti-MHV antibodies, when provided for 8 days or more, completely prevented Ig-deficient neonates from developing wasting syndrome in the conventional environment. CONCLUSION: These findings show that the neonatal wasting syndrome is associated with the presence of MHV and that neonates are efficiently protected by MHV-specific antibodies in the milk. FAU - Gustafsson, E AU - Gustafsson E AD - Department of Animal Development and Genetics, Uppsala University, Sweden. FAU - Blomqvist, G AU - Blomqvist G FAU - Bellman, A AU - Bellman A FAU - Holmdahl, R AU - Holmdahl R FAU - Mattsson, A AU - Mattsson A FAU - Mattsson, R AU - Mattsson R LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Am J Reprod Immunol JT - American journal of reproductive immunology (New York, N.Y. : 1989) JID - 8912860 RN - 0 (Antibodies, Viral) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Immunoglobulins) RN - 0 (beta 2-Microglobulin) SB - IM MH - Animals MH - Animals, Newborn MH - Antibodies, Viral/*immunology MH - Female MH - Hepatitis, Viral, Animal/etiology MH - Histocompatibility Antigens Class II/analysis MH - Immunoglobulins/*deficiency MH - Immunologic Deficiency Syndromes/immunology MH - Lactation/*immunology MH - Mice MH - Mice, Inbred C3H MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Murine hepatitis virus/*immunology/*pathogenicity MH - Pregnancy MH - Wasting Syndrome/etiology/*prevention & control/*virology MH - beta 2-Microglobulin/deficiency PMC - PMC7159460 EDAT- 1996/07/01 00:00 MHDA- 1996/07/01 00:01 PMCR- 2020/04/15 CRDT- 1996/07/01 00:00 PHST- 1996/07/01 00:00 [pubmed] PHST- 1996/07/01 00:01 [medline] PHST- 1996/07/01 00:00 [entrez] PHST- 2020/04/15 00:00 [pmc-release] AID - AJI136 [pii] AID - 10.1111/j.1600-0897.1996.tb00136.x [doi] PST - ppublish SO - Am J Reprod Immunol. 1996 Jul;36(1):33-9. doi: 10.1111/j.1600-0897.1996.tb00136.x.