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1

Efficacy of natural formulations in bovine mastitis pathology: alternative solution to antibiotic treatment

100%
Pasca C., Marghitas L. A., Dezmirean D. S., Matei I. A., Bonta V., Pasca I., Chirila F., Cimpean A., Fit N. I.
Journal of Veterinary Research
|
2020
|
tom 64
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nr 4
2

Current concepts on the impact of coagulase-negative staphylococci causing bovine mastitis as a threat to human and animal health - a review

72%
Sender G., Pawlik A., Korwin-Kossakowska A.
Animal Science Papers and Reports
|
2017
|
tom 35
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nr 2
Staphylococci are the main aetiological factor of bovine mastitis in many dairy herds. Traditionally, coagulase-negative staphylococci (CNS) were considered a normal skin microbiota. Lately the role of CNS in bovine mastitis has increased, as in some countries these pathogens had started to outnumber other mastitis aetiological factors. Given the scale of mastitis problems, the intensive use of antibiotics in dairy cattle, the number of animals and the consumption of milk products there is an urgent need to highlight the threat to both human and animal health originating from CNS. The knowledge of how CNS mastitis develops, spreads in herd and persists is limited. Bovine strains of CNS are poorly characterised; moreover, they are characterised mainly in terms of phenotypes. This review summarises knowledge on the characterisation of CNS strains, stressing the role of the bacterial genotype, in the context of the risk to human and animal health. Selected CNS virulence factors that play a role during mastitis in dairy cattle are listed and described in this paper. They have been selected subjectively by the authors in view of their significance for public health (toxins, antimicrobial resistance) and their importance for animal health (formation of biofilm, prevention of phagocytosis intracellular survival) and mastitis outcome.
3
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Molecular characterization of Polish Prototheca zopfii mastitis isolates and first isolation of Prototheca blaschkeae in Poland

72%
Jagielski T., Lassa H., Ahrholdt J., Roesler U., Malinowski E.
Polish Journal of Veterinary Sciences
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2010
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tom 13
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nr 4
Bovine mastitits caused by the colorless, yeast-like alga Prototheca zopfii is a serious and complex condition that results in heavy economic losses in the dairy industry, both through a substantial reduction in milk production and culling of infected animals. Based on the 18S rDNA sequence analysis, genotype-specific PCR assays have recently been developed to differentiate within the species P. zopfii three distinct P. zopfii genotypes (1-3), of which P. zopfii genotype 3 has been considered a new species P. blaschkeae sp. nov. The purpose of this study was to employ the newly-devised molecular approach for the detection of the two P. zopfii genotypes and P. blaschkeae sp. nov. among bovine mastitis isolates from Poland. This study is the first to provide molecular characterization of Polish P. zopfii mastitis isolates. It also gives the first description of bovine mammary protothecosis due to P. blaschkeae in Poland, as evidenced by genotypical, microbiological, and electron microscopy findings.
4

Influence of Staphylococcus aureus exosecretions isolated from bovine mastitis on leukocyte morphology in vitro

72%
Fijalkowski K., Czernomysy-Furowicz D., Nawrotek P.
Advances in Agricultural Sciences
|
2011
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tom 14
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nr 1-2
5

Curli expression by Escherichia coli strains isolated from bovine mastitis

72%
Karczmarczyk A., Twardon J., Sobieszczanska B., Pajaczkowska M.
Polish Journal of Veterinary Sciences
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2008
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tom 11
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nr 2
133-137
The aim of the study was to determine the expression of mannose-sensitive and mannose-resis- tant adhesins by agglutination of cattle, sheep, goat, rabbit, horse, and chicken red blood cell assay, and curli fimbriae by Congo red binding assay among 341 E. coli strains isolated from 51 milk samples of clinically recognized bovine mastitis. Curli fimbriae expression within biofilms created on an inert surface was also investigated. To determine whether curli fimbriae are expressed both in conditions optimal for their production and in conditions resembling the host organism, the study was conducted in anaerobic atmosphere at 37CC, and at room temperature in aerobic atmosphere. The results demonstrated that although the E. coli isolates examined were deprived of mannose-sensitive and mannose-resistant adhesins they were able to produce curli fimbriae in both aerobic and anaerobic conditions at room and higher temperature, indicating that these adhesins may be involved in the pathogenesis of bovine mastitis.
6

Immunobiology of bovine mammary gland: apoptosis of somatic cells in milk during naturally occurring mastitis

72%
Cywinska A., Bas M., Karpiuk O., Krzyzowska M., Rzewuska M., Schollenberger A., Niemialtowski M.
Polish Journal of Veterinary Sciences
|
2006
|
tom 09
|
nr 1
Mastitis remains a major cause of economic losses in dairy herds. It is believed, that the enhancement of natural defense mechanisms in mammary gland may be helpful in the treatment of bovine mastitis. Our study was designed to assess the apoptosis of leukocytes isolated from bovine milk during subclinical staphylococcal mastitis. Milk samples were collected from cows naturally infected with one pathogen - Staphylococcus aureus and from animals with mastitis caused by several pathogens, including S. aureus. It has been determined that the rate of apoptosis was lower in mastitic milk, as compared with control samples, although varied significantly between groups. High percentage of apoptotic cells was detected in milk with high counts of pathogenic bacteria. In all groups the rate of apoptosis was dependent on the bacterial load, although various correlations were identified. Thus, it is postulated, that the rate of apoptosis of somatic cells in mastitic milk is related to the etiology of infection and is determined by the bacterial load.
7

Defection of genes for enterotoxins and toxic shock syndrome toxin-1 in Staphylococcus aureus isolated from bovine mastitis

72%
Kuzma K., Malinowski E., Lassa H., Klossowska A.
Bulletin of the Veterinary Institute in Puławy
|
2003
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tom 47
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nr 2
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Enzymatic activity of yeast species isolated from bovine mastitis

72%
Malinowski E., Lassa H., Klossowska A., Kuzma K.
Bulletin of the Veterinary Institute in Puławy
|
2001
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tom 45
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nr 2
Fungal mastitis in cows is an increasing issue. The aim of the examination was to evaluate the species and enzymatic activity of yeast-like fungi from mastitis in cows. One hundred and twenty-six strains isolated from secretions of clinically and subclinically inflamed quarters of 102 cows were tested with the use of API 20 C AUX and then 63 strains were examined for enzymatic activity (API ZYM). Candida inconspicua (34.9% ), C. kefyr (19.9% ), C. krusei (11.1%) and S. cerevisiae (10.3%) were the mostly isolated species. Yeast from bovine mastitis showed activity of 12 enzymes, but alkaline phosphatase, valine arylamidase, acid phosphatase and Naphthol-AS-B1-phosphohydrolase were stated at the highest level.
9

Immunorelevant gene expression in LPS-challenged bovine mammary epithelial cells

72%
Pareek R., Wellnitz O., Van D. R., Burton J., Kerr D.
Journal of Applied Genetics
|
2005
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tom 46
|
nr 2
Infection of the bovine mammary gland, in addition to causing animal distress, is a major economic burden of the dairy industry. Greater understanding of the initial host response to infection may lead to more accurate selection of resistant animals or to novel prophylactic or therapeutic intervention strategies. The epithelial cell plays a role in the host response by alerting the immune system to the infection and providing a signal as to where the infection is located. To understand this process better, a cDNA microarray approach was used to search for potential signals produced by mammary epithelial cells in response to exposure to Escherichia coli lipopolysaccharide (LPS). Total RNA from separate cultures of epithelial cells from 4 Holstein cows was harvested 6 h after LPS challenge or control conditions. For each cow, RNA from control or LPS-exposed cells was transcribed to cDNA and labeled with Cy3 or Cy5, then pooled and applied to a bovine total leukocyte (BOTL) microarray slide containing 1278 unique transcripts. Dye reversal was used so that RNA from two of the control cultures was labeled with Cy3 while RNA from the other two control cultures was labeled with Cy5. From the resulting microarray data we selected 4 of the 9 genes significantly (P < 0.02) induced (>1.25-fold) in response to LPS exposure for more detailed analysis. The array signal intensity for 3 of these genes, RANTES/CCL5, IL-6 and T-PA, was relatively low, but quantitative real-time RT-PCR (Q-RT-PCR) analysis revealed that they were induced 208-fold, 10-fold and 3-fold, respectively. The gene that showed the greatest fold induction by microarray analysis (2.5-fold) was CXCL5. This gene had a relatively strong signal intensity on the array and was easily detected by northern blot analysis, which indicated a 10-fold induction. This cell culture model system provides evidence for an important role of the mammary epithelial cell in initiating the innate response to infection.
10

Detection of adhesin genes by PCR and analysis of their distribution in Staphylococcus aureus strains isolated from bovine mastitis

58%
Kuzma K., Malinowski E., Klossowska A., Kaczmarowski M., Smulski S.
Bulletin of the Veterinary Institute in Puławy
|
2006
|
tom 50
|
nr 3
11

Antibiotic resistance of Staphylococcus aureus and coagulase-negative staphylococci isolated from bovine mastitis

58%
Turutoglu H., Ercelik S., Ozturk D.
Bulletin of the Veterinary Institute in Puławy
|
2006
|
tom 50
|
nr 1
12

Yeasts and algae isolated from cows with mastitis in the South-Eastern part of Poland

58%
Krukowski H., Lisowski A., Rozanski P., Skorka A.
Polish Journal of Veterinary Sciences
|
2006
|
tom 09
|
nr 3
The aim of the study was to evaluate the occurrence of mycotic and protohecal mastitis in herds in south-eastern part of Poland. A total of 3091 milk samples from udder quarters with clinical and subclinical mastitis from 29 dairy herds was investigated in this survey. Milk samples were plated as soon as possible on blood agar (BA), Mac Conkey agar, aesculin-tallium acetate-crystal violet agar, and Sabouraud agar. A hundred and thirty one yeast (4.23%) and eleven Protoheca zopfii (0,35%) strains were isolated from cows with clinical and subclinical mastitis. All the isolated fungi were the yeast classified into 4 genera (Candida, Trichosporon, Saccharomyces and Rhodotorula). The most frequently isolated yeasts were Candida sp., C. kefyr, C. humicola, C. rugosa and C. inconspicua. Both fungi and algae were isolated first of all during a confinement-housing season.
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