Evaluation of aquose extracts of plants in the treatment of mares infections endometrites (Equus caballus). / Avaliação de Extratos Aquosos de Plantas no Tratamento da Endometrite Bacteriana em Éguas (Equus caballus).

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This study was conducted during 2005-2007 seasons, and aimed at the evaluation of the activity of extracts of plants in isolated bacteria from susceptible uterus of mares. Twenty-one susceptible to endometritis animals were selected after a gynecological exam performed in 135 mares located in private properties and Instituto de Zootecnia from UFRRJ. Uterine smears were collected with guarded swabs to perform bacteriology, cytology and samples to endometrial biopsy. Pure cultures of Escherichia coli (10, 47,6%), Streptococcus equi subsp. zooepidemicus (8, 38%) and Staphylococcus aureus (2, 9,5%) were isolated, and compounds of nonpathogenic microorganisms like: Staphylococcus coagulase negative, micrococcus, Streptococci alpha-hemolytic, bacillus gram positives e Enterobacter spp. Species of S. aureus, Streptococci of group C, Enterococcus sp. e Escherichia coli isolated from uterine smears was submitted to Microbiological sensitivity test according to CLSE (2005). The antimicrobiological sensitivity test in vitro demonstrated resistance to eritromycin in one specimen of Streptococcus equi subsp. zooepidemicus and intermediary resistance to cephalotin in E. coli specimens. Antimicrobial activity in vitro of aqueous extracts (AE) of three plants: Stryphnodendron adstringens, Kalanchoe pinnata and Kalanchoe brasiliensis, in AACT standard form, was available. Results revealed antimicrobial activity of Stryphnodendron adstringens (barbatimão) against Gram positive bacteria. A total of 57,1% mares presented endometritis in cytological exams. Out of the 12 females that presented inflammation, nine were diagnosed with severe inflammation (>5 neutrophils for field). In Pearsons correlation to evaluate the relationship between the isolation of pathogenic bacteria and uterine inflammation, a high correlation between the two variable (r =0,94) was observed. Among the evaluated specimens, chronic endometritis was diagnosed in 11 mares (52,3%); seven mares (33,3%) presented endometritis in chronic and acute forms and in three mares (14,3%) acute endometrites were observed. Fibrosis and infiltration of mononuclear cells were the most commonly found. On the in vivo testing with aqueous extract of S. adstringens, the 12 mares in which uterine smears Gram positive bacteria was isolated were divided in 3 groups that received 3 different treatments: Group 1, uterine infusion with 20 ml of antibiotic (Penicillin and streptomycin), group 2 infusion with 20ml of saline solution and group 3 infusion with 20 ml of aqueous extract of S. adstringens. The aqueous extract of S. adstringens has variable effectiveness to inhibit Gram positive specimes isolated from uterus of mares, partly differing from the in vitro results. The effect of Stryphnodendron adstringens extracts suggests the need of further studies toward the isolation of the compounds associated with the biological activity, to provide an alternative treatment to equine bacterial endometritis.

ASSUNTO(S)

endometritis medicina veterinaria éguas. mares endometrite stryphnodendron adstringens

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