Dataset Information

Proteomic changes in the milk of water buffalo (Bubalus bubalis) with intramammary infection by Staphylococcus aureus and by non-aureus staphylococciProteomic changes in the milk of water buffalo (Bubalus bubalis) with intramammary infection by Staphylococcus aureus and by non-aureus staphylococci

ABSTRACT: The study reports a differential proteomic analysis of the Mediterranean buffalo milk to evaluate the changes induced by Staphylococcus spp. during a subclinical intramammary infection (IMI). A number of 12 quarter milk samples, 6 of which with somatic cell count (SCC) < 50,000 cells/mL and culture-negative, and the other 6 with SCC ˃ 3,000,000 cells/mL and culture-positive to Staphylococcus aureus (SAU, n=3), SAU, or non-aureus staphylococci (NAS, n=3) was selected. Samples were analyzed using a shotgun proteomics approach, based on filter-aided sample preparation (FASP) followed by LC-MS/MS and label-free analysis. Here, the largest buffalo milk protein dataset described so far was reported. Moreover, the results demonstrated that staphylococcal IMI mostly affected proteins involved in structural functions and in innate immune defense, with changes in their abundance that were generally more intense in SAU than in NAS samples. Further, an increase in the abundance of different cathelicidins was observed, as already reported for other animals with mastitis disease (1,2). (1) Addis MF, Pisanu S, Marogna G, Cubeddu T, Pagnozzi D, Cacciotto C, et al. Production and release of antimicrobial and immune defense proteins by mammary epithelial cells following Streptococcus uberis infection of sheep. Infect Immun. 2013;81: 3182–3197. (2) Addis MF, Tedde V, Dore S, Pisanu S, Puggioni GMG, Roggio AM, et al. Evaluation of milk cathelicidin for detection of dairy sheep mastitis. J Dairy Sci. Elsevier; 2016;99: 6446–6456. In conclusion, our results provide the first in depth characterization of buffalo milk proteins, describe the changes induced by SAU and NAS subclinical intramammary infection and suggest indications to reveal subclinical staphylococcal mastitis in buffalo by the milk proteome investigation.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Bubalus Bubalis

TISSUE(S): Milk

DISEASE(S): Mastitis

SUBMITTER: Salvatore Pisanu

LAB HEAD: Daniela Pagnozzi

PROVIDER: PXD012355 | Pride | 2019-10-22

REPOSITORIES: Pride

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Proteomic changes in the milk of water buffaloes (Bubalus bubalis) with subclinical mastitis due to intramammary infection by Staphylococcus aureus and by non-aureus staphylococci.

Pisanu Salvatore S Cacciotto Carla C Pagnozzi Daniela D Puggioni Giulia Maria Grazia GMG Uzzau Sergio S Ciaramella Paolo P Guccione Jacopo J Penati Martina M Pollera Claudia C Moroni Paolo P Bronzo Valerio V Addis Maria Filippa MF

Scientific reports 20191101 1

Subclinical mastitis by Staphylococcus aureus (SAU) and by non-aureus staphylococci (NAS) is a major issue in the water buffalo. To understand its impact on milk, 6 quarter samples with >3,000,000 cells/mL (3 SAU-positive and 3 NAS-positive) and 6 culture-negative quarter samples with <50,000 cells/mL were investigated by shotgun proteomics and label-free quantitation. A total of 1530 proteins were identified, of which 152 were significantly changed. SAU was more impacting, with 162 vs 127 diffe ...[more]

PMID: 31676851

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			Action	DRS
	Negative_01.msf	Msf
	Negative_01.raw	Raw
	Negative_02.msf	Msf
	Negative_02.raw	Raw
	Negative_03.msf	Msf