Animal fecal carriership and biotypes of Staphylococcus aureus

Dimitracopoulos, G.; Kalkani-Boussiakou, H; Papavassiliou, J.

doi:10.1128/aem.34.5.461-464.1977

Cited by 11 publications

(3 citation statements)

References 10 publications

(10 reference statements)

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“…Nostrils carriage rate was higher than another report (3.2%) in Turkey (14). Fecal prevalence rate in this study was higher than previous reports (1.6 -12%) in Greece (15) and USA (10). Udder skin rate was higher than that reported (8.4%) in USA (10) but lower than that reported (90.1%) in Norway (13).…”

Section: Dairy Cowscontrasting

confidence: 84%

ECOLOGY OF Staphylococcus aureus AND ITS ANTIBIOTIC RE-SISTANCE GENES IN DAIRY FARMS: CONTRIBUTING FACTORS AND PUBLIC HEALTH IMPLICATIONS

Elmonir¹,

Essa²,

El‐Tras³

2019

SVR

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Dairy farms are major sources for zoonotic Staphylococcus aureus pathogens and their antibiotic resistance genes. This study was conducted to assess critical sources and factors related to dissemination of S. aureus and its resistance genes within dairy farms in Egypt. In addition, workers' knowledge, attitudes and practices (KAPs) was evaluated. A total of 102 pooled samples were collected from 3 medium-scale dairy farms in Egypt. S. aureus was detected in 72.5% of the examined samples: lactating cows (72.9%), workers (81.5%), barns environment (88.9%), milking equipment (40%), and bulk tank milk (100%). Cows (udder milk and nostril), workers (hand skin and nostril), barns, open-sides parlor, and lack of acid rinse were associated with S. aureus contamination of milking equipment (P= 0.004 -0.04). Methicillin resistant S. aureus (MRSA, mecA+), vancomycin-resistant S. aureus (VRSA, vanA+) and methicillin-vancomycin-resistant S. aureus (MVRSA, mecA+-vanA+) represented 27.5%, 5% and 12.5% of S. aureus isolates, respectively. This is the first report of MVRSA in dairy farms in Egypt. For workers KAPs, 48.7% didn't know milk-borne zoonoses, while their high risk practices included consumption of raw milk (52.2%), lack of hand wash (48.7%), and willing to work with sore throat (82.6%). This study highlights the critical sources of S. aureus pathogens and their antibiotic resistance genes in dairy farms. This will help in reforming biosecurity plans in dairy farms; an urgent demand for consumers safety in Egypt.

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Section: Dairy Cowscontrasting

confidence: 84%

ECOLOGY OF Staphylococcus aureus AND ITS ANTIBIOTIC RE-SISTANCE GENES IN DAIRY FARMS: CONTRIBUTING FACTORS AND PUBLIC HEALTH IMPLICATIONS

Elmonir¹,

Essa²,

El‐Tras³

2019

SVR

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“…Faecal shedding has been documented for S. agalactiae (Jørgensen et al, 2016), S. uberis (Zadoks, Tikofsky, & Boor, 2005) and Klebsiella (Munoz et al, 2006), and average faecal prevalence ranges from 5% to 23% and >80%, respectively, with considerable differences between farms. The faecal prevalence of S. aureus in cattle ranges from 1.4% to 12%, based on testing of faecal swabs (Dimitracopoulos, Kalkani-Boussiakou, & Papavassiliou, 1977;Roberson et al, 1994). Faecal contamination turns not just bedding but also alleys, traffic lanes, water troughs and the outdoor environment into sources of environmental pathogens.…”

Section: Reservoirsmentioning

confidence: 99%

An update on environmental mastitis: Challenging perceptions

Klaas

Zadoks

2017

Transbound Emerg Dis

187

144

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“…Most of them were opportunistic pathogens, which posed a serious threat to human and animal health and also to the environment ( 34 ). Acinetobacter can be transmitted through air circulation and animal movement, resulting in cross-transfer between the animal body, farm fecal pollution, and environmental equipment ( 35 , 36 ). The results of our study showed that the experimental animals may have been infected with Acinetobacter but did not exhibit obvious signs and symptoms.…”

Section: Discussionmentioning

confidence: 99%

Melatonin disturbed rumen microflora structure and metabolic pathways in vitro

Xue,

Wang,

et al. 2023

Microbiol Spectr

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Melatonin (MLT) can affect the microbial community structure and its metabolites by releasing cellular regulatory factors. Intestinal bacteria recognize and respond to MLT signals from the intestine through MLT binding sites and further activate the function of intestinal immune cells. However, the signal transduction pathway of MLT in the intestine has not been clearly elucidated yet. The effect of MLT on rumen bacterial metabolism was studied by simulating rumen fermentation in vitro . The test was divided into three groups: artificial saliva+standard MLT solution (CK0 group), artificial saliva+rumen juice (CK1 group), and artificial saliva+rumen juice+standard MLT solution (MLT group). The fermentation broth was collected after 24 h of simulated culture in vitro . The results showed that the addition of MLT significantly increased the contents of propionic acid, butyric acid, valeric acid, and total volatile fatty acids ( P < 0.05). The analysis of the differences in flora found that at the genus level, Alistipes , Veillonellaceae_UCG-001 , Selenomonas , Lachnospiraceae_NK4A136_group, and Succinivibrio were significantly increased, whereas Acinetobacter and Prevotella were significantly decreased ( P < 0.05). The analysis of differential metabolites showed that compared with the CK1 group, the relative contents of glutathione, spermidine, indole, 3-methyl indole, phenylpyruvate, and other metabolites were increased significantly in the MLT group ( P < 0.05). The results of enzyme activity on the enrichment pathway showed that MLT could significantly enhance the activities of genes such as GST, SPDS, DAHP, AS, TS, TPH, AANAT, ASMT, and IDO. Therefore, melatonin had certain regulatory effects on rumen microorganisms and their metabolic pathways. IMPORTANCE In in vitro studies, it has been found that the effects of MLT on rumen microorganisms and metabolites can change the rumen flora structure, significantly inhibit the relative abundance of harmful Acinetobacter, and improve the relative abundance of beneficial bacteria. MLT may regulate the “arginine-glutathione” pathway, “phenylalanine, tyrosine and tryptophan biosynthesis-tryptophan generation” branch, “tryptophan-kynurenine” metabolism, and “tryptophan-tryptamine-serotonin” pathway through microorganisms.

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Animal fecal carriership and biotypes of Staphylococcus aureus

Cited by 11 publications

References 10 publications

ECOLOGY OF Staphylococcus aureus AND ITS ANTIBIOTIC RE-SISTANCE GENES IN DAIRY FARMS: CONTRIBUTING FACTORS AND PUBLIC HEALTH IMPLICATIONS

ECOLOGY OF Staphylococcus aureus AND ITS ANTIBIOTIC RE-SISTANCE GENES IN DAIRY FARMS: CONTRIBUTING FACTORS AND PUBLIC HEALTH IMPLICATIONS

An update on environmental mastitis: Challenging perceptions

Melatonin disturbed rumen microflora structure and metabolic pathways in vitro

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