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https://www.readbyqxmd.com/read/28551191/a-commercial-immune-modulating-feed-additive-restores-l-selectin-and-ccl5-expression-following-dexamethasone-treatment-of-murine-immune-cells-in-a-myd88-dependent-manner
#1
R J Ortiz-Marty, A Lewandowski, J D Chapman, I Kanevsky-Mullarky
Bovine mastitis costs the dairy industry billions of dollars every year and presents a health challenge in dairy facilities. Immunosuppressive effects of the periparturient period increase the incidence of mastitis. During this time, cattle experience an elevation in circulating cortisol, which reduces polymorphonuclear cell function and ability to clear infection. OmniGen-AF (OMN; Phibro Animal Health, Teaneck, NJ) is an immunomodulatory feed additive that alters gene expression and is used to reduce rates of mastitis...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28545485/bacteriological-etiology-and-treatment-of-mastitis-in-finnish-dairy-herds
#2
Johanna Vakkamäki, Suvi Taponen, Anna-Maija Heikkilä, Satu Pyörälä
BACKGROUND: The Finnish dairy herd recording system maintains production and health records of cows and herds. Veterinarians and farmers register veterinary treatments in the system. Milk samples for microbiological analysis are routinely taken from mastitic cows. The laboratory of the largest dairy company in Finland, Valio Ltd., analyzes most samples using real-time PCR. This study addressed pathogen-specific microbiological data and treatment and culling records, in combination with cow and herd characteristics, from the Finnish dairy herd recording system during 2010-2012...
May 25, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28545453/genome-wide-methylation-analysis-reveals-differentially-methylated-loci-that-are-associated-with-an-age-dependent-increase-in-bovine-fibroblast-response-to-lps
#3
Filiz T Korkmaz, David E Kerr
BACKGROUND: Differences in DNA methylation are known to contribute to the development of immune-related disorders in humans but relatively little is known about how methylation regulates immune function in cattle. Utilizing whole-transcriptome analyses of bovine dermal fibroblasts, we have previously identified an age and breed-dependent up-regulation of genes within the toll-like receptor 4 (TLR4) pathway that correlates with enhanced fibroblast production of IL-8 in response to lipopolysaccharide (LPS)...
May 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28525984/study-protocol-evaluation-of-the-probiotic-lactobacillus-fermentum-cect5716-for-the-prevention-of-mastitis-in-breastfeeding-women-a-randomised-controlled-trial
#4
Diana M Bond, Jonathan M Morris, Natasha Nassar
BACKGROUND: Mastitis and accompanying pain have been associated with the cessation of breastfeeding. Mastitis is an inflammatory condition of the breast and may be a result of decreased immunity and a lowered resistance to infection. Mastitis affects up to one in five breastfeeding women with most episodes occurring in the first 6-8 weeks postpartum. Antibiotics are often used in the treatment of mastitis, but have not been popular or proven effective as a preventative agent. The WHO has highlighted significant concerns relating to adverse harms of antibiotic use with the production of antibiotic-resistant strains of disease organisms...
May 19, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28525325/epidemiology-of-intramammary-infections-with-staphylococcus-aureus-and-mastitis-streptococci-in-a-dairy-cattle-herd-with-a-history-of-recurrent-clinical-mastitis
#5
H Vlkova, V Babak, I Vrtkova, D Cervinkova, D Marosevic, M Moravkova, Z Jaglic
The aim of the present work was to examine a dairy herd with an anamnesis of recurrent clinical mastitis and decreased milk production. A total of 239 individual cow milk samples originating from asymptomatic cows were collected at four-month intervals and examined mainly for the presence of Staphylococcus aureus and mastitis streptococci using standard cultivation methods. In total, 29.7% and 9.2% samples were positive for S. aureus and mastitis streptococci, respectively. Unlike for mastitis streptococci, the prevalence of animals positive for S...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28524019/in-vitro-ability-of-mastitis-causing-pathogens-to-form-biofilms
#6
Sarah Schönborn, Nicole Wente, Jan-Hendrik Paduch, Volker Krömker
This Research Communication describes the study of in vitro biofilm formation of mastitis causing pathogens. Biofilms are communities of bacteria that are attached to a surface and to each other and are embedded in a self-produced matrix of extracellular polymeric substances. Biofilm formation is an important virulence factor that may result in recurrent or persistent udder infections and treatment failure through increased resistance to antibiotics and protection against host defences. In the present study 252 bacterial isolates from milk samples from bovine udder quarters with intramammary infections were examined with Congo Red agar (CRA) method and tube method (TM) for their ability to form biofilms...
May 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28513553/antibacterial-activity-of-7-epiclusianone-and-its-novel-copper-metal-complex-on-streptococcus-spp-isolated-from-bovine-mastitis-and-their-cytotoxicity-in-mac-t-cells
#7
Mariana de Barros, Pedro Griffo Perciano, Marcelo Henrique Dos Santos, Leandro Licursi De Oliveira, Éderson D'Martin Costa, Maria Aparecida Scatamburlo Moreira
Mastitis is an inflammation of mammary gland parenchyma that adversely affects bovine health and dairy production worldwide despite significant efforts to eradicate it. The aim of this work was to characterize the antimicrobial activity of 7-epiclusianone (7-epi), a compound extracted from the Rheedia brasiliensis fruit, its complex with copper against Streptococcus spp. isolated from bovine mastitis, and to assess their cytotoxicity to bovine mammary alveolar cells (MAC-T). The complex 7-epiclusianone-Cu (7-epi-Cu) was an amorphous green solid with optical activity...
May 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28511395/clinical-and-cytological-spectrum-of-granulomatous-mastitis-and-utility-of-fnac-in-picking-up-tubercular-mastitis-an-eight-year-study
#8
Divya Achutha Ail, Pallavi Bhayekar, Avinash Joshi, Nidhi Pandya, Anuja Nasare, Pranoti Lengare, Ketan Ashok Narkhede
INTRODUCTION: Granulomatous Mastitis (GM) is a rare, benign, inflammatory disease of the breast. It is a well known mimicker of malignancy, clinically and radiologically. Patients are often subjected to number of tests for the right diagnosis. Non-specific Granulomatous Mastitis (NGM) and Tubercular Mastitis (TBM) are chief among the various causes of GM. They are important to be diagnosed early as their treatment varies significantly. Fine Needle Aspiration Cytology (FNAC) is simple, patient friendly and primary investigation modality in cases of lump in breast...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507412/the-effects-of-quercetin-on-microrna-and-inflammatory-gene-expression-in-lipopolysaccharide-stimulated-bovine-neutrophils
#9
Phongsakorn Chuammitri, Suphakit Srikok, Duanghathai Saipinta, Sukolrat Boonyayatra
AIM: To investigate gene expression of microRNA (miRNA) milieus (MIRLET7E, MIR17, MIR24-2, MIR146A, and MIR181C), inflammatory cytokine genes (interleukin 1β [IL1B], IL6, CXCL8, and tumor necrosis factor [TNF]), and the pathogen receptor toll-like receptor (TLR4) in bovine neutrophils under quercetin supplementation. MATERIALS AND METHODS: Isolated bovine neutrophils were incubated with bacterial lipopolysaccharide under quercetin treatment or left untreated. Real-time polymerase chain reaction was performed to determine the expression of the miRNAs and messenger RNA (mRNA) transcripts in neutrophils...
April 2017: Veterinary World
https://www.readbyqxmd.com/read/28505549/intramammary-inoculation-of-panax-ginseng-plays-an-immunoprotective-role-in-staphylococcus-aureus-infection-in-a-murine-model
#10
P Silvestrini, C Beccaria, E A L Pereyra, M S Renna, H H Ortega, L F Calvinho, B E Dallard, C Baravalle
The immunoprotective effect of Panax ginseng (Pg) extract was investigated in a mouse mastitis model. Lactating female mice were intramammarily inoculated with Pg or placebo, and then were challenged with S. aureus, while other group was inoculated with S. aureus alone. The number of bacteria recovered from mammary glands was significantly lower in Pg-treated S. aureus-infected mice (group I) compared with placebo-treated S. aureus-infected mice (group II) and S. aureus-infected mice (group III). The mRNA expression of TLR2, TLR4, IL-1α and TNF-α was influenced by treatment; being the transcript levels for all genes higher in group I compared with group II and III...
May 6, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28497118/novel-%C3%AE-lactamase-blaarl-in-staphylococcus-arlettae
#11
Sabrina N Andreis, Vincent Perreten, Sybille Schwendener
Whole-genome sequencing of penicillin-resistant Staphylococcus arlettae strain SAN1670 from bovine mastitis milk revealed a novel β-lactamase operon consisting of the β-lactamase-encoding gene blaARL, the antirepressor-encoding gene blaR1ARL, and the repressor-encoding gene blaIARL. The functionality of blaARL was demonstrated by gene expression in Staphylococcus aureus. The blaARL operon was chromosomally located in SAN1670 and present in 10 additional unrelated strains, suggesting intrinsic penicillin resistance in S...
May 2017: MSphere
https://www.readbyqxmd.com/read/28480399/the-biological-activities-of-hypericum-perforatum-l
#12
Gulten Okmen, Neslihan Balpınar
BACKGROUND: Mastitis reduces milk yield and alters milk composition. Antibiotics are widely used in the treatment of the disease. However, this widespread use of antibiotics causes both antibiotic residues in milks and antibiotic resistance developed in bacteria. Today's researches are focused on discovering and using new antibiotics against bacteria. OBJECTIVE: The aim of this work was to discover the antibacterial effects of Hypericum perforatum L. extracts against mastitis pathogens, and its other biological activities...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28454927/antifungal-activity-of-essential-oils-extract-from-origanum%C3%A2-floribundum-munby-rosmarinus%C3%A2-officinalis-l-and-thymus%C3%A2-ciliatus-desf-against-candida%C3%A2-albicans-isolated-from-bovine-clinical-mastitis
#13
S Ksouri, S Djebir, A A Bentorki, A Gouri, Y Hadef, A Benakhla
OBJECTIVE: The aim of this study is to limit the antibiotic use in mastitis treatment and to find other alternatives. The antifungal activity of the essential oils from Origanum floribundum Munby., Rosmarinus officinalis L. and Thymus ciliatus Desf. is studied in the present work against a Candida albicans reference strain and ten C. albicans isolated strains from bovine clinical mastitis. MATERIALS AND METHODS: Essential oils were extracted by hydrodistillation technique using Clevenger apparatus...
April 25, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28449183/noninferiority-trial-investigating-the-efficacy-of-a-nonantibiotic-intramammary-therapy-in-the-treatment-of-mild-to-moderate-clinical-mastitis-in-dairy-cows-with-longer-lasting-udder-diseases
#14
M Ziesch, N Wente, Y Zhang, W Zaremba, S Engl, V Krömker
A nonblinded, positively controlled, noninferiority trial was conducted to evaluate the efficacy of an alternative, nonantibiotic therapy with Masti Veyxym(®) to reduce ineffective antibiotic usage in the treatment of nonsevere clinical mastitis (CM) in cows with longer lasting udder diseases. The solely intramammary treatment with Masti Veyxym(®) (three applications, 12 hr apart) and the combined treatment with Masti Veyxym(®) and antibiotics as usual on the farm according to label of the respective product were compared with the reference treatment of solely antibiotic therapy...
April 27, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28436180/control-mechanisms-for-producing-antimicrobial-factors-in-ruminant-mammary-gland
#15
REVIEW
Naoki Isobe
Mastitis, a symptom of inflammation in mammary tissue by infection with various kinds of bacteria, causes huge economic losses in the milk industry. One of the popular methods for treatment of mastitis is antibiotics, although this prohibits milk shipping and sometimes causes resistant microbes. Therefore, a new strategy to treat mastitis without antibiotics is eagerly required around the world. Antimicrobial factors belong to innate immunity and can start their function extremely early after bacterial stimulation...
April 24, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28434736/incidence-of-clinical-mastitis-and-distribution-of-pathogens-on-large-chinese-dairy-farms
#16
Jian Gao, Herman W Barkema, Limei Zhang, Gang Liu, Zhaoju Deng, Lingjie Cai, Ruixue Shan, Shiyao Zhang, Jiaqi Zou, John P Kastelic, Bo Han
Knowledge of the incidence of clinical mastitis (CM) and the distribution of pathogens involved is essential for development of prevention and control programs as well as treatment protocols. No country-wide study on the incidence of CM and the distribution of pathogens involved has been conducted in China. Core objectives of this study were, therefore, to determine the cumulative incidence of CM and the distribution of pathogens causing CM on large Chinese (>500 cows) dairy farms. In addition, associations between the distribution of CM pathogens and bedding materials and seasonal factors were also investigated...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28415707/luteolin-reduces-inflammation-in-staphylococcus-aureus-induced-mastitis-by-inhibiting-nf-kb-activation-and-mmps-expression
#17
Ying-Fang Guo, Nian-Nian Xu, Weijing Sun, Yifan Zhao, Cheng-Ye Li, Meng-Yao Guo
Mastitis is a serious and prevalent disease caused by infection by pathogens such as Staphylococcus aureus. We evaluated the anti-inflammatory effects and mechanism of luteolin, a natural flavonoid with a wide range of pharmacological activities, in a mouse model of S. aureus mastitis. We also treated cultured mouse mammary epithelial cells (mMECs) with S. aureus and luteolin. Histopathological changes were examined by H&E staining and the levels of inflammatory cytokine proteins were analyzed using ELISAs...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28389348/resveratrol-inhibits-lps-induced-mice-mastitis-through-attenuating-the-mapk-and-nf-%C3%AE%C2%BAb-signaling-pathway
#18
Xu Zhang, Yanan Wang, Chong Xiao, Zhengkai Wei, Jingjing Wang, Zhengtao Yang, Yunhe Fu
Resveratrol is a natural polyphenol extracted from mangy plants. It has been reported that resveratrol show multitudinous positive role in biology such as anti-oxidant, anti-nociception and anti-inflammatory effects. Therefore, the present study devotes to test the effect of resveratrol on LPS-induced mastitis in mice. Resveratrol was administered intraperitoneally 1 h before LPS treatment. And the anti-inflammatory effect of resveratrol was measured by histopathological examination, MPO assay, real-time PCR and western blotting analysis...
April 4, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28378574/efficacy-of-vaccination-and-nisin-z-treatments-to-eliminate-intramammary-staphylococcus-aureus-infection-in-lactating-cows
#19
Ran Guan, Jun-Qiang Wu, Wei Xu, Xiao-Yan Su, Song-Hua Hu
This study evaluated the effect of a Staphylococcus aureus bacterin and nisin on bovine subclinical mastitis. A total of 75 Holstein subclinically mastitic cows were randomly allocated to three groups with 25 cows per group. In group I, an intramammary infusion of nisin Z at a dose of 2.50×10(6) IU was carried out once daily for three days, and an autogenous S. aureus bacterin was inoculated into the supramammary lymph node one week before and one week after nisin treatment. In group II, nisin was administered in the same way as in group I, but no bacterin was inoculated...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28351710/sodium-acetate-inhibits-staphylococcus-aureus-internalization-into-bovine-mammary-epithelial-cells-by-inhibiting-nf-%C3%AE%C2%BAb-activation
#20
Zhengkai Wei, Chong Xiao, Changming Guo, Xu Zhang, Yanan Wang, Jingjing Wang, Zhengtao Yang, Yunhe Fu
Bovine mastitis is one of the most costly and prevalent disease affecting dairy cows worldwide. It was reported that Staphylococcus aureus could internalize into bovine mammary epithelial cells (bMEC) and induce mastitis. Some short chain fatty acids (SCFA) have shown to suppress S. aureus invasion into bMEC and regulate antimicrobial peptides expression. But it has not been evaluated that sodium acetate has the similar effect. The aim of this study was to investigate the effect of sodium acetate on the invasion of bovine mammary epithelial cells (bMEC) by S...
March 27, 2017: Microbial Pathogenesis
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