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https://www.readbyqxmd.com/read/28207293/prevalence-of-multidrug-resistant-bacteria-from-u-s-grown-and-imported-fresh-produce-retailed-in-chain-supermarkets-and-ethnic-stores-of-davidson-county-tennessee
#1
Siqin Liu, Agnes Kilonzo-Nthenge
The aim of this study was to determine whether U.S.-grown and imported fresh produce retailed in ethnic stores and chain supermarkets was a reservoir of antibiotic-resistant bacteria. A total of 360 (129 imported and 231 U.S.-grown) samples of fresh produce were purchased from retail stores and analyzed for Enterobacteriaceae , including three pathogenic bacteria ( Escherichia coli O157:H7, Shigella , and Salmonella ), using standard methods. Presumptive pathogenic isolates were confirmed using PCR. The mean Enterobacteriaceae counts for imported produce were 6...
February 16, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28196788/scrotal-ulcer-due-to-serratia-marcescens
#2
Francesco Drago, Giulia Ciccarese, Luca Anselmi, Aurora Parodi
No abstract text is available yet for this article.
February 8, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28191865/high-carbapenem-resistance-in-clinical-gram-negative-pathogens-isolated-in-egypt
#3
Hazim O Khalifa, Ahmed M Soliman, Ashraf M Ahmed, Toshi Shimamoto, Toshinori Hara, Mitsuyasu Ikeda, Yuta Kuroo, Shizuo Kayama, Motoyuki Sugai, Tadashi Shimamoto
The emergence and spread of carbapenem-resistant gram-negative bacteria poses a serious threat to human health worldwide. Currently, little is known about the molecular mechanisms underlying carbapenem resistance and their prevalence among gram-negative bacteria in Egypt. In this study, we analyzed carbapenemase production in gram-negative bacteria isolated from hospitalized patients in Egypt in 2014. All isolates were subjected to phenotypic and genotypic susceptibility testing for carbapenem resistance. Our results indicated a high level of carbapenem-resistant gram-negative bacteria in Egypt, with 50...
February 13, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28188867/bombyx-mori-serpin6-regulates-prophenoloxidase-activity-and-the-expression-of-antimicrobial-proteins
#4
Bing Li, Hai-Zhong Yu, Chong-Jun Ye, Yan Ma, Xing Li, Tao Fan, Fu-Sheng Chen, Jia-Ping Xu
Serpins are a family of serine protease inhibitors that are found widely in insects. They play an important role in insect physiological responses, such as innate immunity and development. In this study, we obtained the Bombyx mori serpin6 (BmSerpin6) sequence from National Center for Biotechnology Information (NCBI) and the silkworm genome database (SilkDB). Reverse transcription PCR (RT-PCR) results showed that BmSerpin6 was expressed highly in hemocytes, the midgut, and the fat body. After challenging with Micrococcus luteus (Mi) and Serratia marcescens (Sm), the BmSerpin6 expression level was induced significantly...
February 8, 2017: Gene
https://www.readbyqxmd.com/read/28188482/isolation-of-pseudomonas-fluorescens-species-highly-resistant-to-pentachlorobenzene
#5
Itxaso Montánchez, Anna Chao Kaberdina, Elena Sevillano, Lucía Gallego, Susana Rodríguez-Couto, Vladimir R Kaberdin
Polychlorinated aromatic compounds, including pentachlorobenzenes and hexachlorobenzenes, are recalcitrant industrial pollutants that cause adverse effects on living cells. In this paper, the isolation of Pseudomonas fluorescens species with high resistance to pentachlorobenzene (PeCB) is reported. It was found that, in contrast to its slightly negative effect on P. fluorescens growth, PeCB readily inhibited the cell growth of Serratia spp. and Escherichia coli strains, thus indicating that inhibition of bacterial growth by PeCB is species-dependent...
February 10, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28187139/complete-genome-analysis-of-serratia-marcescens-rsc-14-a-plant-growth-promoting-bacterium-that-alleviates-cadmium-stress-in-host-plants
#6
Abdur Rahim Khan, Gun-Seok Park, Sajjad Asaf, Sung-Jun Hong, Byung Kwon Jung, Jae-Ho Shin
Serratia marcescens RSC-14 is a Gram-negative bacterium that was previously isolated from the surface-sterilized roots of the Cd-hyperaccumulator Solanum nigrum. The strain stimulates plant growth and alleviates Cd stress in host plants. To investigate the genetic basis for these traits, the complete genome of RSC-14 was obtained by single-molecule real-time sequencing. The genome of S. marcescens RSC-14 comprised a 5.12-Mbp-long circular chromosome containing 4,593 predicted protein-coding genes, 22 rRNA genes, 88 tRNA genes, and 41 pseudogenes...
2017: PloS One
https://www.readbyqxmd.com/read/28166091/oral-polyphosphate-suppresses-bacterial-collagenase-production-and-prevents-anastomotic-leak-due-to-serratia-marcescens-and-pseudomonas-aeruginosa
#7
Sanjiv K Hyoju, Robin E Klabbers, Melissa Aaron, Monika A Krezalek, Alexander Zaborin, Mara Wiegerinck, Neil H Hyman, Olga Zaborina, Harry Van Goor, John C Alverdy
OBJECTIVE: The objective of this study was to determine the effect of polyphosphate on intestinal bacterial collagenase production and anastomotic leak in mice undergoing colon surgery. BACKGROUND: We have previously shown that anastomotic leak can be caused by intestinal pathogens that produce collagenase. Because bacteria harbor sensory systems to detect the extracellular concentration of phosphate which controls their virulence, we tested whether local phosphate administration in the form of polyphosphate could attenuate pathogen virulence and prevent leak without affecting bacterial growth...
February 3, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28163013/lepidopteran-species-have-a-variety-of-defence-strategies-against-bacterial-infections
#8
Lauri Mikonranta, Franziska Dickel, Johanna Mappes, Dalial Freitak
The insect immune system has versatile ways of coping with microbial insults. Currently, innate immune priming has been described in several invertebrates, and the first insights into its mechanistic basis have been described. Here we studied infections with two different strains of Serratia marcescens bacteria in two different Lepidopteran hosts. The results reveal fundamental differences between the two hosts, a well-known model organism Galleria mellonella and a non-model species Arctia plantaginis. They differ in their strategies for resisting oral infections; priming their defences against a recurring sepsis; and upregulating immunity related genes as a response to the specific pathogen strains...
February 2, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28161461/infectious-disease-exposures-and-outbreaks-at-a-south-african-neonatal-unit-with-review-of-neonatal-outbreak-epidemiology-in-africa
#9
A Dramowski, M Aucamp, A Bekker, S Mehtar
BACKGROUND: Hospitalized neonates are vulnerable to infection, with pathogen exposures occurring in utero, intrapartum and postnatally. African neonatal units are at high risk of outbreaks owing to overcrowding, understaffing and shared equipment. METHODS: We describe neonatal outbreaks attended by the Paediatric Infectious Diseases and Infection Prevention (IP) teams at Tygerberg Children's Hospital, Cape Town (1 May 2008 - 30 April 2016) reporting pathogens, outbreak size, mortality, source and outbreak control measures...
February 1, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28161359/is-there-a-role-for-serratia-marcescens-in-male-infertility-an-experimental-study
#10
Kalpana Rana, Deepali Thaper, Vijay Prabha
OBJECTIVE: Establishment of a male BALB/c mouse model to study the role of sperm impairing S. marcescens on mouse reproductive potential. The current study can add to use of reliable animal models to provide a noteworthy evidence for the microbial cause of infertility. METHODS: The mice in the test groups II, III, IV were intraperitoneally administered with different doses (10(4), 10(6) or 10(8) cfu) of S. marcescens whereas, group I serving as control, received PBS, for 10 consecutive days...
February 1, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28161135/temporomandibular-total-joint-prosthesis-infections-a-ten-year-retrospective-analysis
#11
W S McKenzie, P J Louis
A retrospective review of 178 total temporomandibular joint replacements (TJR) performed on 106 patients at the University of Alabama at Birmingham during the years 2000-2010 was completed. Data regarding sex, past medical history, prosthesis manufacturer, microbiology, antibiotic therapy, and the need for additional procedures were obtained from the medical records of patients who developed a prosthetic joint infection following TJR. Of the 106 patients, 95 (89.6%) were female and 11 (10.4%) were male. The average age of the patients was 47 years (range 19-68 years)...
February 1, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28159445/serratia-marcescens-harboring-sme-4-in-brazil-a-silent-threat
#12
Rodrigo Cayô, Rodrigo Cuiabano Paes Leme, Ana Paula Streling, Adriana Pereira Matos, Carolina Silva Nodari, Jessica Reis Esteves Chaves, Jorge Luiz Ferreira Brandão, Maíra Fernandes de Almeida, Valério Carrareto, Marco Aurélio de Castro Pereira, Jean Pierre Aquino de Almeida, Demian Candido Ferreira, Ana Cristina Gales
The intrinsic polymyxin resistance displayed by Serratia marcescens makes the acquisition of carbapenemase encoding genes a worrisome event. This study report a SME-4-producing S. marcescens isolate causing septic shock in Brazil. The insertion of novel resistance determinants and their consequent spread in our territory is noteworthy.
January 20, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28154258/the-risk-of-microbial-contamination-in-multiple-dose-preservative-free-ophthalmic-preparations
#13
Atsuyuki Saisyo, Rima Shimono, Shigeharu Oie, Kazuhiro Kimura, Hiroyuki Furukawa
Multiple-dose ophthalmic preparations that do not contain preservatives carry high risks of microbial contamination. However, there are various types of hospital preparations, with different physicochemical properties. In the present study, we evaluated the association between physicochemical properties and microbial contamination in ophthalmic preparations. The investigated hospital preparations included ophthalmic preparations of physiological saline, 0.2% fluconazole, 0.5% vancomycin hydrochloride, and 2% cyclosporine...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28153766/complete-genome-sequence-of-serratia-sp-yd25-kctc-42987-presenting-strong-antagonistic-activities-to-various-pathogenic-fungi-and-bacteria
#14
Chun Su, Yibo Liu, Yan Sun, Zhi Li
Serratia sp. YD25 (KCTC 42987) was originally isolated from rhizosphere soil in a continuous cropping tobacco-planting farm. Here, we show that its metabolites efficiently suppress the growth of various important pathogenic fungi and bacteria, causing infection in both plants and humans. In addition, Serratia sp. YD25 has a special trait of simultaneous production of both serrawettin W2 and prodigiosin, two important bioactive secondary metabolites produced by Serratia strains. Such co-production has not been reported in other Serratia strains...
January 30, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28146199/-serratia-marcescens-outbreak-in-neonatal-intensive-care-unit-guayaquil-ecuador
#15
Claudia Soria, Nelson Nieto, José E Villacís, Sara Lainez, Mónica Cartelle
We report a Serratia marcescens outbreak occurred in the NICU of a pediatric hospital in Guayaquil, Ecuador. Nine cases of infection were detected, from which septicemia was developed in 55.5%. The index case was a newborn derived from another institution with septic arthritis caused by the outbreak strain. The infection rate was 17.6% and mortality rate was 33.3%. All isolates were resistant to aminoglycosides and susceptible to third generation cephalosporins and carbapenems. Clonality analysis by pulsed-field gel electrophoresis (PFGE) revealed the presence of two closely related clones confirming the horizontal spread...
December 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28133517/phytochemistry-and-pharmacology-of-ferula-persica-boiss-a-review
#16
REVIEW
Zohreh Sattar, Mehrdad Iranshahi
Ferula persica, is the well-known species of the genus Ferula in Iran and has two varieties: persica and latisecta. They have both been extensively used in traditional medicine for a wide range of ailments. A great number of chemical compounds including sesquiterpene coumarins and polysulfides have been isolated from this plant. Fresh plant materials, crude extracts and isolated components of F. persica have shown a wide spectrum of pharmacological properties including anti-pigmentation in Serratia marcescens, cytotoxic, antibacterial, anti-fungal, anti-leishmanial, cancer chemopreventive, reversal of multi-drug resistance, anti-inflammatory and lipoxygenase inhibitory activity...
January 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28131570/relationship-between-milk-cathelicidin-abundance-and-microbiologic-culture-in-clinical-mastitis
#17
M F Addis, V Bronzo, G M G Puggioni, C Cacciotto, V Tedde, D Pagnozzi, C Locatelli, A Casula, G Curone, S Uzzau, P Moroni
The availability of reliable tools to enable the sensitive and specific detection of mastitis in dairy cows can assist in developing control strategies and promote the more rational use of antibiotics. We have developed a milk cathelicidin ELISA that shows high sensitivity and specificity for dairy cow mastitis, based on latent class analysis. In this study, we investigated the effect of microbial agents on cathelicidin abundance in the milk of cows with clinical mastitis. We subjected 535 quarter milk samples (435 from quarters showing signs of clinical mastitis and 100 from healthy quarters as a control) to milk cathelicidin ELISA, somatic cell count (SCC), and microbiologic culture...
January 25, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28130068/genomic-proteomic-and-biochemical-analysis-of-the-chitinolytic-machinery-of-serratia-marcescens-bjl200
#18
Tina R Tuveng, Live Heldal Hagen, Sophanit Mekasha, Jeremy Frank, Magnus Øverlie Arntzen, Gustav Vaaje-Kolstad, Vincent G H Eijsink
The chitinolytic machinery of Serratia marcescens BJL200 has been studied in detail over the last couple of decades, however, the proteome secreted by this Gram-negative bacterium during growth on chitin has not been studied in depth. In addition, the genome of this most studied chitinolytic Serratia strain has until now, not been sequenced. We report a draft genome sequence for S. marcescens BJL200. Using label-free quantification (LFQ) proteomics and a recently developed plate-method for assessing secretomes during growth on solid substrates, we find that, as expected, the chitin-active enzymes (ChiA, B, C, and CBP21) are produced in high amounts when the bacterium grows on chitin...
January 24, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28129403/human-chitotriosidase-is-an-endo-processive-enzyme
#19
Silja Kuusk, Morten Sørlie, Priit Väljamäe
Human chitotriosidase (HCHT) is involved in immune response to chitin-containing pathogens in humans. The enzyme is able to degrade chitooligosaccharides as well as crystalline chitin. The catalytic domain of HCHT is connected to the carbohydrate binding module (CBM) through a flexible hinge region. In humans, two active isoforms of HCHT are found-the full length enzyme and its truncated version lacking CBM and the hinge region. The active site architecture of HCHT is reminiscent to that of the reducing-end exo-acting processive chitinase ChiA from bacterium Serratia marcescens (SmChiA)...
2017: PloS One
https://www.readbyqxmd.com/read/28128639/evaluation-of-three-bacterial-identification-systems-for-species-identification-of-bacteria-isolated-from-bovine-mastitis-and-bulk-tank-milk-samples
#20
Emily Savage, Shubhada Chothe, Valerie Lintner, Traci Pierre, Tammy Matthews, Subhashinie Kariyawasam, Dawn Miller, Deepanker Tewari, Bhushan Jayarao
A study was conducted to evaluate Sensititre(®) Automated Reading and Incubation System 2x System (ARIS), API(®) (API), and Bruker MALDI-TOF MS (MALDI) bacterial species identification systems using 132 diverse bacterial isolates from bovine milk samples and bulk tank milk received at the Penn State Animal Diagnostic Laboratory. The results were compared with 16S rRNA gene sequence analysis, which served as the reference method for species identification. The ARIS, API, and MALDI identified 0%, 40%, and 33...
January 27, 2017: Foodborne Pathogens and Disease
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