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https://www.readbyqxmd.com/read/29908812/short-communication-lack-of-intramammary-niche-recolonization-during-a-sanitation-program-for-the-contagious-mastitis-pathogen-staphylococcus-aureus-genotype-b
#1
C Sartori, V Perreten, I Ivanovic, M C Härdi-Landerer, H U Graber
In Switzerland, sanitation programs of dairy herds infected with the contagious mastitis pathogen Staphylococcus aureus genotype B (GTB) have been established for several years. In recent years, Streptococcus uberis and non-aureus staphylococci have emerged as the bacteria most frequently isolated from bovine milk samples. The latter cause subclinical mastitis, and some species are more persistent or pathogenic than others. The present study aimed to investigate the developments in the intramammary colonization spectrum of 5 dairy herds undergoing a sanitation program for Staph...
June 13, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29866164/staphylococcus-aureus-intramammary-challenge-in-non-lactating-mammary-glands-stimulated-to-rapidly-grow-and-develop-with-estradiol-and-progesterone
#2
Benjamin D Enger, Carly E Crutchfield, Taylor T Yohe, Kellie M Enger, Stephen C Nickerson, Catherine L M Parsons, Robert Michael Akers
Intramammary infections (IMI) are prevalent in non-lactating dairy cattle and their occurrence during periods of significant mammary growth and development (i.e. pregnant heifers and dry cows) is believed to interfere with growth, development, and subsequent milk production. However, direct study of IMI impacts on non-lactating but developing mammary glands is lacking. The objectives of this study were to (1) define how IMI affected total and differential mammary secretion somatic cell counts in mammary glands stimulated to rapidly grow using estradiol and progesterone, and (2) characterize changes in mammary morphology in response to IMI...
June 5, 2018: Veterinary Research
https://www.readbyqxmd.com/read/29800700/antibacterial-activity-of-the-bioactive-molecules-identified-in-three-woody-plants-against-some-pathogenic-bacteria
#3
Nader A Ashmawy, Mohamed Z M Salem, Mervat El-Hefny, Mamoun S M Abd El-Kareem, Nader A El-Shanhorey, Abeer A Mohamed, Abdelfattah Z M Salem
Three bacterial isolates were identified from infected potato tubers showing soft and blackleg like symptoms as well as one isolate from infected pear tree showing crown gall symptom. Conventional and molecular identification proved that bacterial isolates belonging to Pectobacterium carotovorum subsp. carotovorum, Pectobacterium atrosepticum, Dickeya solani and Agrobacterium tumefaciens. The above plant bacterial isolates and human pathogenic bacteria Escherichia coli, Sarcina lutea, and Staphylococcus aureus were used for the bioassay...
May 22, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29777672/valvectomy-versus-replacement-for-the-surgical-treatment-of-tricuspid-endocarditis
#4
Adam N Protos, Jaimin R Trivedi, William M Whited, Michael P Rogers, Ugochukwu Owolabi, Kendra J Grubb, Kristen Sell-Dottin, Mark S Slaughter
BACKGROUND: Optimal surgical treatment of infective tricuspid endocarditis is debatable, especially in the setting of inherent social and pathologic concerns. This study seeks to compare tricuspid valve repair, replacement, and excision for the treatment of infective endocarditis METHODS: A single center cardiac surgery database was queried between 2012 and 2016 to identify patients >18 years who underwent tricuspid valve surgery for infective endocarditis. Patients were divided into 3 groups based on the type of tricuspid valve surgery: valvectomy, repair, or replacement and evaluated to identify differences between the pre-op factors and outcomes including mortality, length of stay, and complications...
May 16, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29753483/sanitation-of-staphylococcus-aureus-genotype-b-positive-dairy-herds-a-field-study
#5
C Sartori, R Boss, M Bodmer, A Leuenberger, I Ivanovic, H U Graber
Staphylococcus aureus is one of the most widespread mastitis pathogens infecting dairy cattle worldwide. In Switzerland, different bovine genotypes of Staph. aureus have been identified, and genotype B (GTB) was demonstrated to be a highly contagious subtype, causing herd problems in cattle. As the efficacy of antibiotic therapy against Staph. aureus is not satisfactory, the most promising strategy for controlling this udder pathogen is the implementation of specific sanitation programs for affected farms. The aim of the present longitudinal study was the field evaluation of 2 analytical approaches for the sanitation of Staph...
May 9, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29730068/biofilm-testing-of-microbiota-an-essential-step-during-corneal-scrap-examination-in-egyptian-acanthamoebic-keratitis-cases
#6
Marwa A Hasby Saad, Haidy S M Khalil
PURPOSE: To detect co-infections in the culture-proven acanthamoebic keratitis (AK) cases, and to test the capability of biofilm formation in the isolated microbiota. The clinical findings, habit of wearing contact lens and in-vitro antibiotic resistance were analyzed further according to the biofilm formation capability. METHODS: After clinical examination, corneal scraps and swabs were taken from 240 clinically suspected AK cases, for Acanthamoeba and microbiological cultures...
May 3, 2018: Parasitology International
https://www.readbyqxmd.com/read/29548037/marine-develops-chronic-right-knee-granuloma-after-initial-injury-at-the-basic-school
#7
Amarateedha H Prak, Kristina M Dela Rosa
With skin lesions that have failed previous treatments, consideration for an atypical mycobacteria, specifically Mycobacterium marinum, infection should be suspected. Importance of the history cannot be stressed as this is a clue that the patient may have been inoculated and infected in the field environment. A marine with chronic right knee plaque for 3 yr that first appeared after a field exercise at The Basic School but worsened despite treatment with clindamycin, TMP-SMX, and incision and drainage in 2012...
March 14, 2018: Military Medicine
https://www.readbyqxmd.com/read/29449095/relationships-between-bacteriospermia-dna-integrity-nuclear-protamine-alteration-sperm-quality-and-icsi-outcome
#8
Ali Zeyad, Mohammed Hamad, Houda Amor, Mohamad Eid Hammadeh
The Aim of this study was to evaluate the effects of bacteriospermia on human sperm parameters, nuclear protamines, DNA integrity and ICSI outcome in patients enrolled for ICSI treatment. 84 unselected couples consulting in infertility and obstetrics clinic and enrolled for ICSI treatment were included in this study. The semen specimens were screened bacteriologically; semen and sperm parameters were also evaluated according to WHO guidelines. DNA integrity, protamines concentration and protamine deficiency were estimated by TUNEL assay, AU-PAGE and Chromomycin (CMA3) respectively...
March 2018: Reproductive Biology
https://www.readbyqxmd.com/read/29408029/characterization-of-a-genetically-distinct-subpopulation-of-staphylococcus-haemolyticus-isolated-from-milk-of-cows-with-intramammary-infections
#9
Anna Wanecka, Jarosław Król, Jan Twardoń, Jacek Mrowiec, Jacek Bania, Agnieszka Korzeniowska-Kowal, Anna Tobiasz
The aim of this paper is to describe a novel subpopulation of Staphylococcus haemolyticus isolated from intramammary gland infections (IMI) in cattle. In total, eight isolates originating from milk samples from two unrelated dairy farms were examined phenotypically (using the ID 32 STAPH system) and genotypically. These isolates had almost identical sequences of each of the housekeeping genes examined (dnaJ, rpoB and sodA) but these sequences displayed similarity of only ∼92.5%, 95.0% and 96.8%, respectively, with known S...
February 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29331467/canadian-national-dairy-study-herd-level-milk-quality
#10
C A Bauman, H W Barkema, J Dubuc, G P Keefe, D F Kelton
The objective of this study was to estimate Canadian national milk quality parameters and estimate the bulk tank milk (BTM) prevalence of 4 mastitis pathogens, Staphylococcus aureus, Streptococcus agalactiae, Mycoplasma bovis, and Prototheca spp., on Canadian dairy farms. A questionnaire was sent to all Canadian dairy producers. Of the 1,062 producers who completed the questionnaire, 374 producers from across the country were visited and milking hygiene was assessed. Farm-level milk quality data for all Canadian dairy producers was collected from the provincial marketing boards and combined with the questionnaire and farm visit data...
March 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29224881/early-lactation-extended-pirlimycin-therapy-against-naturally-acquired-staphylococcus-aureus-intramammary-infections-in-heifers-a-randomized-controlled-trial
#11
S Skoulikas, S Dufour, D Haine, J-Y Perreault, J-P Roy
The primary objective of the current study was to evaluate cure rate following an early-lactation extended intramammary pirlimycin treatment on heifers naturally infected by Staphylococcus aureus. The secondary objective was to assess Petrifilm Staph Express (3M Microbiology, St. Paul, MN) count plate characteristics when used in a protocol for early-lactation detection of infected quarters in heifers. Milk samples were collected from heifers (n = 946) in the first few days following calving (mean = 5 d). Heifers with laboratory-confirmed S...
February 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29187146/determination-of-antimicrobial-susceptibility-patterns-in-staphylococcus-aureus-strains-recovered-from-patients-at-two-main-health-facilities-in-kabul-afghanistan
#12
Haji Mohammad Naimi, Hamidullah Rasekh, Ahmad Zia Noori, Mohammad Aman Bahaduri
BACKGROUND: Staphylococcus aureus (S. aureus) is a major pathogen implicated in skin and soft tissue infections, abscess in deep organs, toxin mediated diseases, respiratory tract infections, urinary tract infections, post-surgical wound infections, meningitis and many other diseases. Irresponsible and over use of antibiotics has led to an increased presence of multidrug resistant organisms and especially methicillin resistant Staphylococcus aureus (MRSA) as a major public health concern in Afghanistan...
November 29, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29111996/microbial-keratitis-after-accelerated-corneal-collagen-cross-linking-in-keratoconus
#13
Prafulla K Maharana, Pranita Sahay, M Sujeeth, Deepali Singhal, Anubha Rathi, Jeewan S Titiyal, Namrata Sharma
PURPOSE: To assess the pattern of microbial keratitis after accelerated corneal collagen cross-linkage (aCXL) in patients with keratoconus. METHOD: The medical records of cases of keratoconus that underwent aCXL from June 2014 to May 2017 were reviewed. Cases that developed microbial keratitis after aCXL were included in the study. The clinical, microbiological profile and the treatment outcomes were evaluated. RESULTS: Of 532 eyes that underwent aCXL, 7 cases developed microbial keratitis during the study period...
February 2018: Cornea
https://www.readbyqxmd.com/read/29095869/elimination-kinetics-of-ceftiofur-hydrochloride-in-milk-after-an-8-day-extended-intramammary-administration-in-healthy-and-infected-cows
#14
Rongwei Han, Songli Li, Jun Wang, Zhongna Yu, Jiaqi Wang, Nan Zheng
Ceftiofur hydrochloride (CEF) is occasionally used for the intramammary (IMM) treatment of mastitis. This extralabel manner could result in a drug-residue violation of the milk. The objective of this study was to determine the elimination kinetics of IMM CEF in lactating dairy cattle. The pharmacokinetic profile of CEF after repeated IMM administration in nine healthy cows and nine Staphylococcus aureus infected cows was investigated, alongside determining the MICs of Staph. aureus field strains. The MIC 90 value for CEF in Staph...
2017: PloS One
https://www.readbyqxmd.com/read/29030872/survival-and-detection-of-bacillus-cereus-in-the-presence-of-escherichia-coli-salmonella-enteriditis-staphylococcus-aureus-pseudomonas-aeruginosa-and-candida-albicans-after-rechallenge-in-makeup-removers
#15
Nadine Yossa, Gabriela Arce, James Smiley, Mei-Chiung Jo Huang, Lanlan Yin, Rebecca Bell, Sandra Tallent, Eric Brown, Thomas Hammack
OBJECTIVE: Pathogenic contamination of cosmetics intended to be applied on or around the eye area, including make-up removers, may lead to severe eye infections. To assess the efficacy of antimicrobial preservatives in these products we investigated the survival and detection of Bacillus cereus F 4227A spiked into make-up removers, alone and in the presence of other relevant microorganisms. METHODS: Four brands of make-up removers, A, B, C and D, were challenged three times (day 0, day 7, and day 14) using B...
October 14, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28927452/vancomycin-heteroresistance-in-coagulase-negative-staphylococcus-blood-stream-infections-from-patients-of-intensive-care-units-in-mansoura-university-hospitals-egypt
#16
Ghada El-Saeed Mashaly, Rasha Hassan El-Mahdy
BACKGROUND: Vancomycin heteroresistance in coagulase negative Staphylococci (CoNS) is a recent health concern especially in serious infections like bloodstream infections as it may lead to failure of therapy. Little information is available about the prevalence vancomycin heteroresistance in CoNS causing bloodstream infections in intensive care units (ICUs) patients of Mansoura University Hospitals (MUHs). METHODS: This prospective study enrolled 743 blood samples collected from ICUs patients presented with clinical manifestations of bloodstream infections over the period extending from January 2014 to March 2016...
September 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28761643/a-prospective-randomised-trial-of-isolated-pathogens-of-surgical-site-infections-ssi
#17
Konstantinos Alexiou, Ioannis Drikos, Maria Terzopoulou, Nikolaos Sikalias, Argyrios Ioannidis, Nikolaos Economou
BACKGROUND: Every surgical wound is colonized by bacteria, but only a small percentage displays symptoms of infection. The distribution of pathogens isolated in surgical site infections has not significantly changed over the last decades. Staph. Aureus, Coag(-) Staphylococci, Enterococcus spp and E. Coli are the main strains appearing. In addition, a continuously rising proportion of surgical site infections caused by resistant bacterial species (MRSA, C. Albicans) has been reported...
September 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28624271/coagulase-negative-staphylococci-species-affect-biofilm-formation-of-other-coagulase-negative-and-coagulase-positive-staphylococci
#18
Coralie Goetz, Yannick D N Tremblay, Daphnée Lamarche, Andréanne Blondeau, Annie M Gaudreau, Josée Labrie, François Malouin, Mario Jacques
Coagulase-negative staphylococci (CNS) are considered to be commensal bacteria in humans and animals, but are now also recognized as etiological agents in several infections, including bovine mastitis. Biofilm formation appears to be an important factor in CNS pathogenicity. Furthermore, some researchers have proposed that CNS colonization of the intramammary environment has a protective effect against other pathogens. The mechanisms behind the protective effect of CNS have yet to be characterized. The aim of this study was to evaluate the effect of CNS isolates with a weak-biofilm phenotype on the biofilm formation of other staphylococcal isolates...
August 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28607765/paediatric-bone-and-joint-infection
#19
REVIEW
Alexios D Iliadis, Manoj Ramachandran
Despite advances in understanding and management, paediatric osteoarticular infections continue to pose diagnostic difficulties for clinicians. Delays in diagnosis can lead to potentially devastating morbidity.No single investigation, including joint aspiration, is sufficiently reliable to diagnose conclusively paediatric bone and joint infection. Diagnosis should be based on a combination of clinical signs, imaging and laboratory investigations. Algorithms should supplement, and not replace, clinical decision making in all cases...
January 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28573492/bactericidal-activity-and-synergy-studies-of-peptide-ap-cect7121-against-multi-resistant-bacteria-isolated-from-human-and-animal-soft-tissue-infections
#20
Gastón Delpech, Mariana Bistoletti, Mónica Ceci, Sabina Lissarrague, Sergio Sánchez Bruni, Mónica Sparo
AP-CECT7121 is an antimicrobial peptide, produced by Enterococcus faecalis CECT7121, with bactericidal activity against Gram-positive bacteria. The aim of this study was to evaluate the bactericidal activity of AP-CECT7121, alone and with gentamicin, against multi-resistant bacteria isolated from human and animals with soft tissue infections. During the period 2014-2015, bacterial strains producing human and animal soft tissue infections were studied. Samples from patients attended at a general hospital and cattle from four dairies in the Province of Buenos Aires (Argentina) were included...
September 2017: Probiotics and Antimicrobial Proteins
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