Small, Gram-negative bacteria that produced a blue-green fluorescence characteristic of Pseudomonas aeruginosa (Bacillus pyocyaneus) were found in all but 2 cases of an unusually severe outbreak of bovine mastitis involving 23 cows. Since the outbreak wais unusual in character, a study was carried on to determine the identity of the organisms and their possible significance. The results are rep...

INTRODUCTION Bovine mastitis is a frequent cause of economic loss in dairy herds. Coagulase-negative staphylococci (CoNS) are increasing in importance as causeof bovine intramammary infection (IMI) throughout the world in recent years. CoNShave been isolated from milk samples collected from cows with clinical andsubclinical mastitis in several countries. Identification of mastitis pathogensis i...

MicroRNA (miRNA) in tissue and liquid samples have been shown to be associated with many diseases including inflammation. We aimed to identify inflammation-related miRNA expression level in the bovine mastitis milk. Expression level of inflammation-related miRNA in milk from mastitis-affected and normal cows was analyzed using qPCR. We found that expression level of miR-21, miR-146a, miR-155, m...

MicroRNAs are small non-coding RNA molecules that are important regulators of gene expression at the post-transcriptional level. miRNAs impact the processes of cell proliferation, differentiation and apoptosis. Thus, the regulation of miRNA expression profiles associated with mastitis will be conducive for its control. In this study, Staphylococcus aureus (S. aureus) was administered to the mam...

Bovine mastitis causes significant economic losses in the dairy industry. Effective prevention of bovine mastitis requires an understanding of the infection status of a pathogenic microorganism in a herd that has not yet shown clinical signs of mastitis and appropriate treatment specific for the pathogenic microorganism. However, bacterial identification by culture has drawbacks in that the sen...

Mycoplasma bovis is an emerging bacterial agent causing bovine mastitis. Although these cell wall-free bacteria lack classical virulence factors, they are able to activate the immune system of the host. However, effects on the bovine mammary immune system are not yet well characterized and detailed knowledge would improve the prevention and therapy of mycoplasmal mastitis. The aim of this study...

Bovine mastitis is the single most common cause for antibacterial use in lactating dairy cattle (18, 24). Treatment of this disease is also the most common cause of illegal antibacterial residues in marketed milk (10). Antibacterial therapy of bacterial-induced diseases in cattle has been incriminated as a catalyst for resistance in bacteria isolated from treated animals, other animals within t...

BACKGROUND The majority of Staphylococcus aureus isolates that are recovered from either serious infections in humans or from mastitis in cattle represent genetically distinct sets of clonal groups. Moreover, population genetic analyses have provided strong evidence of host specialization among S. aureus clonal groups associated with human and ruminant infection. However, the molecular basis of...

In the production and industrialization of cow's milk, an important factor that reduces quality quantity product is bovine mastitis. The dairy cattle mastitis leads to use antibiotics, which indiscriminate prolonged progressively increasing number resistant pathogens. this context, natural products used combat pathogenic microorganisms have become interesting alternative. Among those, propolis ...

INTRODUCTION Mastitis can occur at any stage of a cow’s productive life. Microbiological investigations of clinical bovine mastitis reveal a causative agent in 75–95% of cases. There is good evidence that microorganisms are involved in almost all cases. At least 137 infectious causes of bovine mastitis are known, but the majority of cases are caused by only a few common bacterial pathogens, nam...