Background: Breastfeeding women are at risk of developing mastitis during the lactation period. Staphylococcus aureus has emerged as the community-acquired pathogen responsible for virulence (methicillin resistance and Panton-Valentine leukocidin toxin producing). Research aim: The aim was to compare the microorganisms responsible for mastitis and breast abscesses during breastfeeding. Methods: This observational study was conducted with a sample of women (N = 60) admitted to our hospital between 2016 and 2018. Participants affected by mastitis and breast abscess were studied and cared for by a multidisciplinary working group. A diagnostic breast ultrasound identified the pathology. Results: Twenty-six participants (43.3%) were affected by mastitis and 34 (56.7%) by breast abscess. The most common microorganism identified was Staphylococcus aureus (S. aureus; mastitis, n = 13; abscesses, n = 24). Methicillin resistance was identified in 21 (44.7%) S. aureus strains: 17 (80.9%) cases of abscess and four (19.1%) cases of mastitis. The median number of months of breastfeeding was smaller in the methicillin-resistant S. aureus (MRSA) cases (median = 3, range = 1–20 months) than in the methicillin-sensitive S. aureus (MSSA) cases (median = 6.5, range = 3–21 months). The Panton-Valentine leukocidin toxin gene was detected in 12 (25.5%) cases (MRSA, n = 8, 66.7%; MSSA, n = 4, 33.3%). Hospitalization was required more frequently in MRSA (n = 8, 38%; five Panton-Valentine leukocidin positive) than in MSSA cases (n = 5, 19%; one Panton-Valentine leukocidin positive). Four women out of the eight MRSA cases (50%) that were Panton-Valentine leukocidin positive stopped breastfeeding during mammary pathologies, three (37.5%) participants continued breastfeeding until the follow-up recall, and one case was lost at follow-up. Conclusion: Clinical severity was probably complicated by the presence of the Panton-Valentine leukocidin toxin, which required hospitalization more frequently.
The Role of Staphylococcus aureus in Mastitis: A Multidisciplinary Working Group Experience / S.G. Rimoldi, P. Pileri, M.I. Mazzocco, F. Romeri, G. Bestetti, N. Calvagna, C. Tonielli, L. Fiori, A. Gigantiello, C. Pagani, P. Magistrelli, A. Sartani, A. De Silvestri, M.R. Gismondo, I. Cetin. - In: JOURNAL OF HUMAN LACTATION. - ISSN 0890-3344. - 36:3(2020 Aug 01), pp. 503-509.
|Titolo:||The Role of Staphylococcus aureus in Mastitis: A Multidisciplinary Working Group Experience|
RIMOLDI, SARA GIORDANA (Primo) (Corresponding)
GISMONDO, MARIA RITA (Penultimo)
CETIN, IRENE (Ultimo)
|Parole Chiave:||anatomy; breast; breastfeeding; human milk|
|Settore Scientifico Disciplinare:||Settore MED/40 - Ginecologia e Ostetricia|
Settore MED/07 - Microbiologia e Microbiologia Clinica
|Data di pubblicazione:||1-ago-2020|
|Data ahead of print / Data di stampa:||8-ott-2019|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1177/0890334419876272|
|Appare nelle tipologie:||01 - Articolo su periodico|