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https://www.readbyqxmd.com/read/28436180/control-mechanisms-for-producing-antimicrobial-factors-in-ruminant-mammary-gland
#1
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
#2
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
#3
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...
March 10, 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
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/28349671/in-vitro-algicidal-effect-of-guanidine-on%C3%A2-prototheca-zopfii%C3%A2-genotype-2-strains-isolated-from-clinical-and-subclinical-bovine-mastitis
#7
A C Alves, E Capra, S Morandi, P Cremonesi, J C F Pantoja, H Langoni, A P C de Vargas, M M da Costa, T Jagielski, C A D Bolaños, S T Guerra, M G Ribeiro
Prototheca species have increasingly been reported to be opportunistic pathogens that cause mastitis in dairy herds, and it poses an emergent problem because at present, there are no effective therapies for the treatment of protothecal mastitis. The present study investigated the in vitro algicidal effect of guanidine on 75 Prototheca zopfii genotype 2 strains isolated from 75 cases of clinical and subclinical bovine mastitis. All strains were susceptible to guanidine in vitro with minimal algaecide concentrations ranging from 0...
March 27, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28342609/randomized-blinded-controlled-clinical-trial-shows-no-benefit-of-homeopathic-mastitis-treatment-in-dairy-cows
#8
Fanny Ebert, Rudolf Staufenbiel, Julia Simons, Laura Pieper
Mastitis is one of the most common diseases in dairy production, and homeopathic remedies have been used increasingly in recent years to treat it. Clinical trials evaluating homeopathy have often been criticized for their inadequate scientific approach. The objective of this triple-blind, randomized controlled trial was to assess the efficacy of homeopathic treatment in bovine clinical mastitis. The study was conducted on a conventionally managed dairy farm between June 2013 and May 2014. Dairy cows with acute mastitis were randomly allocated to homeopathy (n = 70) or placebo (n = 92), for a total of 162 animals...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28331742/negative-pressure-wound-therapy-in-chronic-inflammatory-breast-diseases
#9
Ozan Barış Namdaroğlu, Hilmi Yazıcı, Ahmet Mücteba Öztürk, Savaş Yakan, Mehmet Yıldırım, Ahmet Deniz Uçar, Nazif Erkan
Mastitis is inflammation of breast tissue that may or may not originate from an infection. Two different forms of mastitis have been described, lactational and non-lactational. Lactational mastitis is the most common type and generally conservative therapy that includes milk removal and physical therapy provides symptomatic relief, but antibiotic therapy is also needed. Common types of non-lactational mastitis are periductal mastitis and idiopathic granulomatous mastitis. Treatment includes antibiotics, drainage, and surgery, but usually this is a chronic process and a therapeutic management algorithm for chronic breast inflammation is unclear and has no consensus...
April 2016: Journal of Breast Health (2013)
https://www.readbyqxmd.com/read/28321344/pituitary-adenoma-and-hyperprolactinemia-accompanied-by-idiopathic-granulomatous-mastitis
#10
Sebahattin Destek, Vahit Onur Gul, Serkan Ahioglu, Kursat Rahmi Serin
Idiopathic granulomatous mastitis (IGM) is a rare chronic inflammatory disease of the breast, and its etiology remains not fully elucidated. IGM is observed more often in patients with autoimmune disease. Hyperprolactinemia is observed during pregnancy, lactation, and a history of oral contraceptive use. A 39-year-old patient with no history of oral contraceptive use presented with complaints such as redness, pain, and swelling in her left breast. Ultrasound and magnetic resonance imaging (MRI) revealed a suspicious inflamed mass lesion...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28299517/characterization-and-complete-genome-sequence-analysis-of-a-novel-virulent-siphoviridae-phage-against-staphylococcus-aureus-isolated-from-bovine-mastitis-in-xinjiang-china
#11
Qian Zhang, Shaozhen Xing, Qiang Sun, Guangqian Pei, Shi Cheng, Yannan Liu, Xiaoping An, Xianglilan Zhang, Yonggang Qu, Yigang Tong
Bovine mastitis is one of the most costly diseases in dairy cows worldwide. It can be caused by over 150 different microorganisms, where Staphylococcus aureus is the most frequently isolated and a major pathogen responsible for heavy economic losses in dairy industry. Although antibiotic therapy is most widely used, alternative treatments are necessary due to the increasing antibiotic resistance. Using phage for pathogen control is a promising tool in the fight against antibiotic resistance. Mainly using high-throughput sequencing, bioinformatics and our proposed phage termini identification method, we have isolated and characterized a novel virulent phage, designated as vB_SauS_IMEP5, from manure collected from dairy farms in Shihezi, Xinjiang, China, for use as a biocontrol agent against Staphylococcus aureus infections...
March 15, 2017: Virus Genes
https://www.readbyqxmd.com/read/28288845/sodium-houttuyfonate-inhibits-lps-induced-inflammatory-response-via-suppressing-tlr4-nf-%C3%A4-b-signaling-pathway-in-bovine-mammary-epithelial-cells
#12
Wenqing Wang, Xiaoyu Hu, Peng Shen, Naisheng Zhang, Yunhe Fu
Mastitis is an inflammatory reaction caused by microorganisms in the mammary gland which usually leads to the decrease of the dairy production. It vastly makes bad effect on the cattle industry all over the world. Nowadays, an increasing number of scientists keep a watchful eye on natural compounds to prevent mastitis. Sodium houttuyfonate (SH) has been reported to have antibacterial and anti-inflammatory effects. This experiment aimed to investigate the anti-inflammatory properties of SH on LPS-stimulated primary bovine mammary epithelial cells (bMEC)...
March 10, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28277182/pharmacokinetic-analysis-of-thymol-carvacrol-and-diallyl-disulfide-after-intramammary-and-topical-applications-in-healthy-organic-dairy-cattle
#13
Sharon E Mason, Keena A E Mullen, Kevin L Anderson, Steven P Washburn, James L Yeatts, Ronald E Baynes
Mastitis is among the most costly concerns for dairy producers whether cattle are managed conventionally or organically. Unfortunately, there are no USFDA-approved mastitis treatments that allow dairy cows in the United States to maintain organic dairy status. We investigated the plasma pharmacokinetics of three organic mastitis products currently used by organic producers and organic dairy veterinarians. Those products include intramammary, topical and intravaginal preparations, each dosed at two levels. Additionally, tissue data were collected for kidney, liver and fat in order to estimate a withholding time for each of the products...
February 14, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28272303/effects-of-silver-nanoparticles-on-multiple-drug-resistant-strains-of-staphylococcus-aureus-and-pseudomonas-aeruginosa-from-mastitis-infected-goats-an-alternative-approach-for-antimicrobial-therapy
#14
Yu-Guo Yuan, Qiu-Ling Peng, Sangiliyandi Gurunathan
Recently, silver nanoparticles (AgNPs) have been widely used in various applications as antimicrobial agents, anticancer, diagnostics, biomarkers, cell labels, and drug delivery systems for the treatment of various diseases. Microorganisms generally acquire resistance to antibiotics through the course of antibacterial therapy. Multi-drug resistance (MDR) has become a growing problem in the treatment of infectious diseases, and the widespread use of broad-spectrum antibiotics has resulted in the development of antibiotic resistance by numerous human and animal bacterial pathogens...
March 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28256391/molecular-epidemiology-of-streptococcus-agalactiae-isolated-from-mastitis-in-brazilian-dairy-herds
#15
Glei A Carvalho-Castro, Juliana R Silva, Luciano V Paiva, Dircéia A C Custódio, Rafael O Moreira, Glaucia F Mian, Ingrid A Prado, Antônio Chalfun-Junior, Geraldo M Costa
Streptococcus agalactiae is one of the most common pathogens leading to mastitis in dairy herds worldwide; consequently, the pathogen causes major economic losses for affected farmers. In this study, multilocus sequence typing (MLST), genotypic capsular typing by multiplex polymerase chain reaction (PCR), and virulence gene detection were performed to address the molecular epidemiology of 59 bovine (mastitis) S. agalactiae isolates from 36 dairy farms located in the largest milk-producing mesoregions in Brazil (Minas Gerais, São Paulo, Paraná, and Pernambuco)...
February 16, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28255203/indirubin-treatment-of-lipopolysaccharide-induced-mastitis-in-a-mouse-model-and-activity-in-mouse-mammary-epithelial-cells
#16
Jin-Lun Lai, Yu-Hui Liu, Yong-Chong Peng, Pan Ge, Chen-Fei He, Chang Liu, Ying-Yu Chen, Ai-Zhen Guo, Chang-Min Hu
Indirubin is a Chinese medicine extracted from indigo and known to be effective for treating chronic myelogenous leukemia, neoplasia, and inflammatory disease. This study evaluated the in vivo anti-inflammatory activity of indirubin in a lipopolysaccharide- (LPS-) induced mouse mastitis model. The indirubin mechanism and targets were evaluated in vitro in mouse mammary epithelial cells. In the mouse model, indirubin significantly attenuated the severity of inflammatory lesions, edema, inflammatory hyperemia, milk stasis and local tissue necrosis, and neutrophil infiltration...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28240296/exogenous-melatonin-reduces-somatic-cell-count-of-milk-in-holstein-cows
#17
Minghui Yang, Jianmin Shi, Jianhua Tian, Jingli Tao, Menglong Chai, Jing Wang, Zhiyuan Xu, Yukun Song, Kuanfeng Zhu, Pengyun Ji, Guoshi Liu
High somatic cell counts in milk caused by mastitis significantly influence the quality of milk and result in substantial annual economic loss. This study evaluated the beneficial effects of melatonin (MT) on milk somatic cell count (SCC) in cows. To examine the effects of melatonin on SCC, one hundred twenty cows were divided into four groups based on milk SCC. In each group, half of the cows were treated with melatonin (S.C.). Melatonin treatment significantly reduced milk SCC. To explore the potential mechanism, 20 cows with relatively high SCC were selected to evaluate the biochemical and immunological profiles of their blood after melatonin treatment...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28237594/efficacy-of-a-high-free-iodine-barrier-teat-disinfectant-for-the-prevention-of-naturally-occurring-new-intramammary-infections-and-clinical-mastitis-in-dairy-cows
#18
C M M R Martins, E S C Pinheiro, M Gentilini, M Lopez Benavides, M V Santos
Using a natural exposure trial design, the goal of our study was to evaluate the clinical efficacy of an iodine teat disinfectant with barrier properties and a high level of free iodine relative to a conventional iodine teat disinfectant with no barrier properties and low levels of free iodine. During the 18 wk of the trial, quarter milk samples were collected every 2 wk from 385 dairy cows from 2 herds. Cows on both farms were assigned in a balanced way according to milk yield, number of lactation, days in milk, somatic cell count (SCC) and microbiology culture pretrial into one of following groups: nonbarrier post milking teat disinfectant (NBAR; n = 195 cows; 747 quarters) or barrier postmilking teat disinfectant (BAR; n = 190 cows; 728 quarters)...
May 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28237241/stochastic-bio-economic-modeling-of-mastitis-in-ethiopian-dairy-farms
#19
Abraham Mekibeb Getaneh, Sefinew Alemu Mekonnen, Henk Hogeveen
Mastitis is an inflammation of the mammary gland that is considered to be one of the most frequent and costly diseases in the dairy industry. Also in Ethiopia, bovine mastitis is one of the most frequently encountered diseases of dairy cows. However, there was no study, so far, regarding the costs of clinical mastitis and only two studies were reported on costs of subclinical mastitis. Presenting an appropriate and complete study of the costs of mastitis will help farmers in making management decisions for mastitis control...
March 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28235706/the-lytic-activity-of-recombinant-phage-lysin-lysk%C3%AE-amidase-against-staphylococcal-strains-associated-with-bovine-and-human-infections-in-the-jiangsu-province-of-china
#20
Yan Zhou, Hui Zhang, Hongduo Bao, Xiaomeng Wang, Ran Wang
We investigated the lytic activity of the bacteriophage endolysin (lysin) LysKΔamidase against live methicillin-resistant and-susceptible staphylococcal strains clinically isolated from bovine milk and humans from different origins of China. Antibiotic resistance patterns, multilocus sequence typing and SCCmec type of 137 staphylococcal strains isolated from bovine milk associated with bovine mastitis and human diseases were studied. A lytic enzyme, LysKΔamidase, was constructed by fusing the N-terminal 220 amino acids with the C-terminal 105 amino acids of staphylococcal phage lysin LysK...
April 2017: Research in Veterinary Science
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