PMID- 12951423 OWN - NLM STAT- MEDLINE DCOM- 20031205 LR - 20190605 IS - 0916-7250 (Print) IS - 0916-7250 (Linking) VI - 65 IP - 8 DP - 2003 Aug TI - Concentrations and specific antibodies to staphylococcal enterotoxin-C and toxic shock syndrome toxin-1 in bovine mammary gland secretions, and inflammatory response to the intramammary inoculation of these toxins. PG - 899-906 AB - To investigate the pathological role of staphylococcal enterotoxins (SEs) and toxic shock syndrome toxin-1 (TSST-1) in bovine mastitis, the production of SEs and TSST-1 was investigated in staphylococci isolated from 120 mammary gland secretions (MGS, 51 from no clinical sign-mammary glands and 69 from staphylococcal mastitic-mammary glands) collected from dairy farms where staphylococcal mastitis frequently occurred in Miyagi and Yamagata prefectures from 1997 to 1998. Concentrations of these toxins and specific antibody titers in each MGS were also measured. Furthermore, SEC and TSST-1 were inoculated into lactating mammary glands and inflammatory responses were analyzed. A high percentage of staphylococci including Staphylococcus aureus and coagulase-negative staphylococci isolated from both no clinical sign- and mastitic-MGS produced both SEC and/or TSST-1. The concentration of SEC increased with the severity of the mastitis, and was significantly higher (P<0.05) in acute mastitic-than in no clinical signs-MGS. Titers of specific antibodies to TSST-1 in MGS were significantly higher (P<0.05) than those to SEC, regardless of whether or not the cows were lactating or mastitic. Specific antibodies purified from MGS neutralized each toxin in vitro. A significant increase (P < 0.05) in somatic cell counts was induced by the intramammary inoculation of SEC but not TSST-1. These findings indicated that SEC rather than TSST-1 plays an important role in the pathology of staphylococcal bovine mastitis. The inflammatory activity of TSST-1 was probably neutralized by specific antibodies in MGS. FAU - Kuroishi, Toshinobu AU - Kuroishi T AD - T Cell Research Institute, Minami-yoshinari, Aoba-ku, Sendai, Japan. FAU - Komine, Ken-ichi AU - Komine K FAU - Kai, Kenzo AU - Kai K FAU - Itagaki, Masashi AU - Itagaki M FAU - Kobayashi, Jin AU - Kobayashi J FAU - Ohta, Minoru AU - Ohta M FAU - Kamata, Shin-ichi AU - Kamata S FAU - Kumagai, Katsuo AU - Kumagai K LA - eng PT - Journal Article PL - Japan TA - J Vet Med Sci JT - The Journal of veterinary medical science JID - 9105360 RN - 0 (Antibodies, Bacterial) RN - 0 (Bacterial Toxins) RN - 0 (Enterotoxins) RN - 0 (Superantigens) RN - 0 (enterotoxin F, Staphylococcal) RN - 39424-54-9 (enterotoxin C, staphylococcal) SB - IM MH - Animals MH - Antibodies, Bacterial/*analysis MH - Antibody Specificity MH - *Bacterial Toxins MH - Cattle MH - Cattle Diseases/immunology/*microbiology MH - Cell Culture Techniques MH - Enterotoxins/*immunology/toxicity MH - Female MH - Lactation MH - Mammary Glands, Animal/cytology/immunology/*microbiology MH - Staphylococcal Infections/immunology/*veterinary MH - Staphylococcus aureus/immunology MH - Superantigens/*immunology EDAT- 2003/09/03 05:00 MHDA- 2003/12/06 05:00 CRDT- 2003/09/03 05:00 PHST- 2003/09/03 05:00 [pubmed] PHST- 2003/12/06 05:00 [medline] PHST- 2003/09/03 05:00 [entrez] AID - 10.1292/jvms.65.899 [doi] PST - ppublish SO - J Vet Med Sci. 2003 Aug;65(8):899-906. doi: 10.1292/jvms.65.899.