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Pratima Adhikari, Douglas E Cosby, Nelson A Cox, Monique S Franca, Susan M Williams, Robert M Gogal, Casey W Ritz, Woo K Kim
A study was conducted to evaluate the efficacy of fructooligosaccharides (FOS) in controlling the infection of Salmonella Enteritidis (SE) in White Leghorns. A total of 30 laying hens (white leghorns W-36) were challenged both orally and cloacally with approximately 108 colony-forming units of nalidxic acid resistant SE (SENAR) and divided into 3 treatments: 1) SENAR challenged + 0.0% FOS, 2) SENAR challenged + 0.5% FOS (Nutraflora), and 3) SENAR challenged + 1.0% FOS. SENAR recovery via fecal shedding was measured at 3- and 6-d post-infection (dpi), whereas in the ceca and internal organs, SENAR recovery was measured at 7-d post-infection...
April 13, 2018: Poultry Science
Wenrui Zhen, Yujing Shao, Xiuyan Gong, Yuanyuan Wu, Yanqiang Geng, Zhong Wang, Yuming Guo
This study was conducted to evaluate the protective efficacy of dietary Bacillus coagulans (B. coagulans) supplementation in birds receiving Salmonella enteritidis (SE). Two hundred and forty 1-day-old Cobb broilers were randomly assigned to 2 × 2 factorial arrangements of treatments with 2 levels of dietary B. coagulans (0 or 400 mg/kg) and 2 levels of SE challenge (0 or 1 × 109 SE between d 9 to 11). Results showed that SE infection did not affect growth performance, but caused intestinal inflammation and barrier function impairment by reducing intestinal goblet cells and beneficial bacteria numbers, increasing cecal Salmonella colonization and liver Salmonella invasion, downregulating jejunal mucin-2 (at 7 and 17 d post-infection, DPI), TLR2 (at 7 and 17 DPI), TLR4 (at 17 DPI), TNFSF15 (at 7 and 17 DPI) gene mRNA levels, and upregulating jejunal IFN-γ mRNA levels (at 17 DPI) compared to uninfected birds...
April 11, 2018: Poultry Science
Nadezhda A Wall, C Coral Dominguez-Medina, Sian E Faustini, Charlotte N Cook, Andrew McClean, Mark D Jesky, Marisol Perez-Toledo, Matthew D Morgan, Alexandra G Richter, Charles J Ferro, Paul Cockwell, Paul A Moss, Ian R Henderson, Lorraine Harper, Adam F Cunningham
Patients with chronic kidney disease (CKD) have an increased risk of infection and poorer responses to vaccination. This suggests that CKD patients have an impaired responsiveness to all antigens, even those first encountered before CKD onset. To examine this we evaluated antibody responses against two childhood vaccine antigens, tetanus (TT) and diphtheria toxoids (DT) and two common pathogens, cytomegalovirus (CMV) and Salmonella enterica serovar Enteritidis (SEn) in two independent cohorts consisting of age-matched individuals with and without CKD...
2018: PloS One
Firas Fahad Al-Zahrani, Hussain Al-Shahrani, Ashwaq Al-Mohawes, Abdullah Al-Hwiesh, Abdusalam Noor, Ibrahiem Saeed Abdulrahmn
Peritoneal dialysis (PD)-associated peritonitis is an important contributor to morbidity and mortality; Gram-positive bacteria constitute the most frequent associated pathogens (45%-60%) followed by Gram-negative bacteria (25%-40%) and fungal infection (3%-6%). Salmonella peritonitis is an extremely rare cause of peritonitis (0.15%). Peritonitis attributed to Salmonella has been reported only in four cases. Herewith, we report a 68-year-old Sudanese female who presented to our PD unit with abdominal pain and diarrhea and was diagnosed to have Salmonella peritonitis...
March 2018: Saudi Journal of Kidney Diseases and Transplantation
Yuxin Fu, Dongdong Mu, Wanjin Qiao, Duolong Zhu, Xiangxiang Wang, Fulu Liu, Haijin Xu, Per Saris, Oscar P Kuipers, Mingqiang Qiao
Nisin, an important bacteriocin from Lactococcus lactis subsp., is primarily active against various Gram-positive bacteria. Leucocin C, produced by Leuconostoc carnosum 4010, is a class IIa bacteriocin used to inhibit the growth of Listeria monocytogenes. Because two bacteriocins have different modes of action, the combined use of them could be a potential strategy for effective inhibition of foodborne pathogens. In this study, L. lactis N8-r-lecCI (N8 harboring lecCI gene) coexpressing nisin-leucocin C was constructed based on the food-grade carrier L...
2018: Frontiers in Microbiology
A B Alzwghaibi, R Yahyaraeyat, B Nayeri Fasaei, A Ghalyanchi Langeroudi, T Zahraei Salehi
Salmonella is widely distributed throughout the world and can be found in poultry industry, animal breeding centers, food and feedstuffs of all geographical regions. This study was conducted to determine and identify Salmonella serovars isolated from poultry, calves and foodstuffs (poultry and animals products such as egg and meat). A total of one hundred isolates of Salmonella serovars including Salmonella Typhimurium, Salmonella Enteritidis, Salmonella Infantis, Salmonella Gallinarum and Salmonella Pullorum consecutively were subjected to the conventional culture, biochemical and serological assays...
April 7, 2018: Archives of Microbiology
Sophie Octavia, Michelle L T Ang, My Van La, Siti Zulaina, Zul Azri As Saad Saat, Wee Siong Tien, Hwi Kwang Han, Peng Lim Ooi, Lin Cui, Raymond T P Lin
The number of salmonellosis cases in Singapore has increased over the years. Salmonella enterica serovar Enteritidis has always been the most predominant serovar in the last five years. The National Public Health Laboratory assisted outbreak investigations by performing multi-locus variable number tandem repeat analysis (MLVA) on isolates that were collected at the time of the investigations. Isolates were defined as belonging to a particular cluster if they had identical MLVA patterns. Whilst MLVA has been instrumental in outbreak investigations, it may not be useful when outbreaks are caused by an endemic MLVA type...
April 3, 2018: Infection, Genetics and Evolution
Andrea Parisi, John A Crump, Kathryn Glass, Benjamin P Howden, Luis Furuya-Kanamori, Samantha Vilkins, Darren J Gray, Martyn D Kirk
BACKGROUND: Salmonella is a leading cause of foodborne enterocolitis worldwide. Antimicrobial use in food animals is the driving force for antimicrobial resistance among Salmonella particularly in high-income countries. Nontyphoidal Salmonella (NTS) infections that are multidrug resistant (MDR) (nonsusceptible to ≥1 agent in ≥3 antimicrobial categories) may result in more severe health outcomes, although these effects have not been systematically examined. We conducted a systematic review and meta-analysis to examine impacts of MDR NTS on disease outcomes in high-income settings...
April 6, 2018: Foodborne Pathogens and Disease
Zhaohao Shi, Pravin R Kaldhone, Bijay K Khajanchi, Steven L Foley, Steven C Ricke
The draft genome sequences of four Salmonella enterica serovar Enteritidis and Kentucky isolates were evaluated for biofilm formation and antibiotic resistance. The Salmonella serovar Kentucky strains CFS84 and CFS85 and Salmonella serovar Enteritidis strains CFS86 and CFS87 were isolated from retail poultry sources in Arkansas.
April 5, 2018: Genome Announcements
Bilal Djeghout, Senjuti Saha, Mohammad Saiful Islam Sajib, Arif Mohammad Tanmoy, Maksuda Islam, Gemma L Kay, Gemma C Langridge, Hubert P Endtz, John Wain, Samir K Saha
PURPOSE: Ceftriaxone is the drug of choice for typhoid fever and the emergence of resistant Salmonella Typhi raises major concerns for treatment. There are an increasing number of sporadic reports of ceftriaxone-resistant S. Typhi and limiting the risk of treatment failure in the patient and outbreaks in the community must be prioritized. This study describes the use of whole genome sequencing to guide outbreak identification and case management. METHODOLOGY: An isolate of ceftriaxone-resistant S...
April 4, 2018: Journal of Medical Microbiology
Marina Morganti, Luca Bolzoni, Erika Scaltriti, Gabriele Casadei, Elena Carra, Laura Rossi, Paola Gherardi, Fabio Faccini, Norma Arrigoni, Anna Rita Sacchi, Marco Delledonne, Stefano Pongolini
Background and aimEpidemiology of human non-typhoid salmonellosis is characterised by recurrent emergence of new clones of the pathogen over time. Some clonal lines of Salmonella have shaped epidemiology of the disease at global level, as happened for serotype Enteritidis or, more recently, for Salmonella 4,[5],12:i:-, a monophasic variant of serotype Typhimurium. The same clonal behaviour is recognisable at sub-serotype level where single outbreaks or more generalised epidemics are attributable to defined clones...
March 2018: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
Y J Hu, Y Y He, Y R Wang, C Liu, M M Wang, X Gan, W Wang, S F Yan, Y Bai, Z X Peng, F Q Li, J Xu
Objective: To obtain the serotype diversity and antimicrobial resistance of Salmonella isolates recovered from retail chicken carcasses for sale in six regions of China. Methods: From August 2010 to March 2012, each month 20 retail chicken carcasses including freshly slaughtered, chilled and frozen samples were collected from supermarkets and farmer's markets in 7 monitoring sites in Beijing, Jilin province, Inner Mongolia Autonomous, Shanxi province, Jiangsu province and Guangdong province, respectively. Samples were routinely collected for 12 months for each site...
April 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
W W Li, L Bai, X L Zhang, X J Xu, Z Tang, Z W Bi, Y C Guo
Objective: To determine the prevalence and antimicrobial susceptibility of Salmonella isolated from broiler production process in 4 provinces of China. Methods: Using convenience sampling method, 238 sample sites from broiler whole production process were chosen in Henan, Jiangsu, Heilongjiang and Shandong provinces in 2012. A total of 11 592 samples were collected and detected to analyze prevalence baseline, including 2 090 samples from breeding chicken farms and hatcheries, 1 421 samples from broiler farms, 5 610 samples from slaughterhouses and 2 471 samples from distribution and retail stores...
April 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
Torahiko Okubo, Mizue Matsushita, Shinji Nakamura, Junji Matsuo, Hiroki Nagai, Hiroyuki Yamaguchi
Soil-borne amoeba Acanthamoeba S13WT has an endosymbiotic relationship with an environmental Neochlamydia bacterial strain. However, regardless of extensive experiments in liquid media, the biological advantage of the symbiosis remained elusive. We therefore explored the role of the endosymbiont in predator-prey interactions on solid media. A mixed culture of the symbiotic or aposymbiotic amoebae and GFP-expressing Escherichia coli or Salmonella Enteritidis was spotted onto the center of a LB or B-CYE agar plate pre-inoculated with a ring of mCherry-expressing Legionella pneumophila (Legionella "wall")...
April 3, 2018: Environmental Microbiology Reports
M Krawiec, S Rusiecki, M Kuczkowski, A Wieliczko
Salmonella is one of the most common causes of food poisoning in the European Union and the United States of America. Free-living birds are known as a reservoir for the different serovars of Salmonella, including S. Typhimurium, S. Enteritidis, S. Infantis, S. Newport and S. Hadar, which may play an important role in the epidemiology of salmonellosis in farm animals, particularly poultry. Also, the antibiotic resistance of Salmonella spp. is a growing, public health emergency. In the present study, the authors examined 36 Salmonella spp...
December 2017: Polish Journal of Veterinary Sciences
C G Velasquez, K S Macklin, S Kumar, M Bailey, P E Ebner, H F Oliver, F S Martin-Gonzalez, M Singh
Salmonella spp. are among the most common foodborne pathogens, and increase in the occurrence of antimicrobial drug-resistant Salmonella poses a severe risk to public health. The main objective of this study was to determine changes in Salmonella prevalence and their antimicrobial resistance on poultry farms following recommendations to changes in biosecurity practices. Four poultry farms were sampled by collecting cloacal swabs, drag swabs, and litter samples prior to recommended biosecurity changes (March-April) and post recommendations (October-November)...
March 27, 2018: Poultry Science
Fia Noviyanti, Yukie Hosotani, Shigenobu Koseki, Yasuhiro Inatsu, Susumu Kawasaki
The goals of this study were to monitor the growth kinetics of Salmonella Enteritidis in chicken juice using real-time polymerase chain reaction (PCR) and to evaluate its efficacy by comparing the results with an experimental database. Salmonella Enteritidis was inoculated in chicken juice samples at an initial inoculum of 104 CFU/mL with inoculated samples incubated at six different temperatures (10, 15, 20, 25, 30, and 35°C). Sampling was carried out for 36 h to observe the growth of Salmonella Enteritidis...
April 2, 2018: Foodborne Pathogens and Disease
Huaiqiong Chen, Qixin Zhong
Concerns about undesirable by-products from chlorine sanitation of fresh produce and the limited efficacy with the presence of organic matter, have led to studies on alternative washing solutions. The aim of this study was to evaluate the antibacterial activities of acidified sodium benzoate (NaB) solutions against Escherichia coli O157:H7, Salmonella enterica and Listeria monocytogenes in growth medium and on cherry tomatoes. Experimentally, the minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs, >3 Log reduction) of NaB against E...
March 22, 2018: International Journal of Food Microbiology
Saleh Alamer, Shimaa Eissa, Raja Chinnappan, Mohammed Zourob
The work describes a simple cotton swab-based colorimetric immunoassay as a rapid screening tool for pathogenic bacteria on poultry processing plants. This immunosensing platform can be used for the detection of pathogens present on surfaces such as glass, stainless steel and chicken meat. Unlike the reported assays, here, cotton swab plays dual function: as a sample collector from the solid surfaces and as detection platform. The immunoassay was tested for the detection of 4 different bacteria; Salmonella typhimurium, Salmonella enteritidis, Staphylococcus aureus and Campylobacter jejuni...
February 10, 2018: Mikrochimica Acta
Raja Chinnappan, Saleh AlAmer, Shimaa Eissa, Anas Abdel Rahamn, Khalid M Abu Salah, Mohammed Zourob
The work describes a fluorescence-based study for mapping the highest affinity truncated aptamer from the full length sequence and its integration in a graphene oxide platform for the detection of Salmonella enteriditis. To identify the best truncated sequence, molecular beacons and a displacement assay design are applied. In the fluorescence displacement assay, the truncated aptamer was hybridized with fluorescein and quencher-labeled complementary sequences to form a fluorescence/quencher pair. In the presence of S...
December 18, 2017: Mikrochimica Acta
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