Robin M. Siletzky

Works (21)

Updated: July 31st, 2023 21:15

2019 journal article

Strain-Specific Differences in Survival of Campylobacter spp. in Naturally Contaminated Turkey Feces and Water

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 85(22).

By: L. Good n, W. Miller*, J. Niedermeyer n, J. Osborne n, R. Siletzky n, D. Carver n, S. Kathariou n

author keywords: Campylobacter; Campylobacter coli; Campylobacter jejuni; turkey; antimicrobial resistance; feces; survival; water
MeSH headings : Animals; Bacterial Typing Techniques; Campylobacter / classification; Campylobacter / physiology; Campylobacter Infections / microbiology; Campylobacter Infections / veterinary; Campylobacter coli / physiology; Campylobacter jejuni / physiology; Cold Temperature; Drug Resistance, Multiple, Bacterial; Feces / microbiology; Microbial Viability; Multilocus Sequence Typing; Polymorphism, Restriction Fragment Length; Turkeys; Water Microbiology
TL;DR: Examination of survival of Campylobacter, including different strains, in freshly excreted feces from naturally colonized commercial turkey flocks and in suspensions of turkey feces in water from the turkey house revealed that C. jejuni survived longer than C. coli in feces, while the reverse was observed in water. (via Semantic Scholar)
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Added: December 16, 2019

2016 journal article

Identification of a Campylobacter coli methyltransferase targeting adenines at GATC sites

FEMS Microbiology Letters, 364(7).

By: V. Dutta n, E. Altermann *, M. Crespo n, J. Olson n, R. Siletzky n & S. Kathariou n

MeSH headings : Adenine / metabolism; Animals; Campylobacter coli / enzymology; Campylobacter coli / genetics; Cattle; DNA Methylation; Genome, Bacterial; Humans; Methyltransferases / genetics; Methyltransferases / isolation & purification; Methyltransferases / metabolism; Nucleotide Motifs; Open Reading Frames; Sequence Analysis / methods
TL;DR: To determine whether ORF0059 mediated MboI resistance and hence encoded a putative N6‐adenine DNA methyltransferase, the gene was cloned immediately upstream of a chloramphenicol resistance cassette (cat) and a PCR fragment harboring ORF 0059‐cat was transformed into C. coli 11601, suggesting a direct role of this gene in methylation of adenines at GATC sites. (via Semantic Scholar)
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Added: August 6, 2018

2014 journal article

Population Structure of Listeria monocytogenes Serotype 4b Isolates from Sporadic Human Listeriosis Cases in the United States from 2003 to 2008

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 80(12), 3632–3644.

By: S. Lee  n, T. Ward *, L. Graves*, C. Tarr *, R. Siletzky n & S. Kathariou n

MeSH headings : Genotype; Humans; Listeria monocytogenes / classification; Listeria monocytogenes / genetics; Listeria monocytogenes / isolation & purification; Listeriosis / epidemiology; Listeriosis / microbiology; Molecular Sequence Data; Phylogeny; Serotyping; United States / epidemiology
TL;DR: The analysis suggests a complex population structure of serotype 4b L. monocytogenes from sporadic disease, with important contributions by ECs and several novel clonal groups, and the possibility of hidden multistate outbreaks. (via Semantic Scholar)
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Added: August 6, 2018

2013 journal article

Genetic Determinants for Cadmium and Arsenic Resistance among Listeria monocytogenes Serotype 4b Isolates from Sporadic Human Listeriosis Patients

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 79(7), 2471–2476.

By: S. Lee n, M. Rakic-Martinez n, L. Graves*, T. Ward *, R. Siletzky n & S. Kathariou n

MeSH headings : Arsenic / toxicity; Cadmium / toxicity; Drug Resistance, Bacterial; Genes, Bacterial; Humans; Listeria monocytogenes / drug effects; Listeria monocytogenes / genetics; Listeria monocytogenes / isolation & purification; Listeriosis / microbiology
TL;DR: In Listeria monocytogenes serotype 4b isolates from sporadic listeriosis, heavy metal resistance was primarily encountered in certain clonal groups (ECI, ECII, and ECIa); all arsenic-resistant isolates harbored the arsenic resistance cassette previously identified in pLI100. (via Semantic Scholar)
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2012 journal article

Chromosomal tet(O)-Harboring Regions in Campylobacter coli Isolates from Turkeys and Swine

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 78(23), 8488–8491.

By: M. Crespo n, J. Olson n, E. Altermann  n, R. Siletzky n & S. Kathariou n

MeSH headings : Animals; Campylobacter Infections / microbiology; Campylobacter Infections / veterinary; Campylobacter coli / drug effects; Campylobacter coli / genetics; Campylobacter coli / isolation & purification; Carrier Proteins / genetics; Chromosomes, Bacterial; DNA Transposable Elements; DNA, Bacterial / chemistry; DNA, Bacterial / genetics; Genes, Bacterial; Molecular Sequence Data; Mutagenesis, Insertional; Poultry Diseases / microbiology; Sequence Analysis, DNA; Swine; Swine Diseases / microbiology; Tetracycline Resistance; Turkeys
TL;DR: In turkey-derived Campylobacter coli isolates of a unique lineage (cluster II), the tetracycline resistance determinant tet(O) was chromosomal and was part of a gene cassette (transposon) interrupting a Campyloblacter jejuni-associated putative citrate transporter gene. (via Semantic Scholar)
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2012 journal article

Heavy Metal and Disinfectant Resistance of Listeria monocytogenes from Foods and Food Processing Plants

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 78(19), 6938–6945.

By: S. Ratani n, R. Siletzky n, V. Dutta n, S. Yildirim n, J. Osborne n, W. Lin*, A. Hitchins*, T. Ward *, S. Kathariou n

MeSH headings : Arsenic / pharmacology; Benzalkonium Compounds / pharmacology; Cadmium / pharmacology; Disinfectants / pharmacology; Drug Resistance, Bacterial; Environmental Microbiology; Food Handling; Food Microbiology; Genes, Bacterial; Listeria monocytogenes / classification; Listeria monocytogenes / drug effects; Listeria monocytogenes / genetics; Listeria monocytogenes / isolation & purification; Metals, Heavy / pharmacology; Serotyping
TL;DR: Investigation of isolates from foods and food processing plants for resistance to the quaternary ammonium disinfectant benzalkonium chloride and to heavy metals finds novel determinants that may confer resistance to both cadmium and arsenic in these serotype 4b strains of L. monocytogenes. (via Semantic Scholar)
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2012 journal article

Microbiology of prechill carcasses from medium- and fast-growing pastured broiler chicken strains

JOURNAL OF APPLIED POULTRY RESEARCH, 21(3), 623–629.

By: R. Thanissery  n, S. Kathariou n, R. Siletzky n & D. Smith n

author keywords: Campylobacter; Escherichia coli; pastured broiler; Salmonella; total coliforms
TL;DR: The objective of the present study was to compare the levels of total coliforms and E. coli, as well as the prevalence of Campylobacter and Salmonella, in pastured CX and FR strains, and to investigate whether this could have been due to an inherent ability of FR to resist colonization or the benefit from longer residence on pasture. (via Semantic Scholar)
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2012 journal article

Two Novel Type II Restriction-Modification Systems Occupying Genomically Equivalent Locations on the Chromosomes of Listeria monocytogenes Strains

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 78(8), 2623–2630.

By: S. Lee n, T. Ward *, R. Siletzky n & S. Kathariou n

MeSH headings : Bacteriophages / growth & development; Chromosomes, Bacterial; Cluster Analysis; DNA Restriction-Modification Enzymes / genetics; DNA, Bacterial / chemistry; DNA, Bacterial / genetics; DNA, Bacterial / metabolism; Electrophoresis, Gel, Pulsed-Field; Listeria monocytogenes / classification; Listeria monocytogenes / enzymology; Listeria monocytogenes / genetics; Listeria monocytogenes / virology; Molecular Sequence Data; Molecular Typing; Sequence Analysis, DNA; Synteny
TL;DR: Among the sequenced Listeria phages, lytic phages possessed significantly fewer recognition sites for these RM systems than lysogenic phage sequence content, suggesting that in lyticphages sequence content evolved toward reduced susceptibility to such RM systems. (via Semantic Scholar)
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2011 journal article

Atypical Listeria monocytogenes Serotype 4b Strains Harboring a Lineage II-Specific Gene Cassette

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 78(3), 660–667.

By: S. Lee  n, T. Ward *, L. Graves*, L. Wolf *, K. Sperry*, R. Siletzky n, S. Kathariou  n

MeSH headings : DNA, Bacterial / chemistry; DNA, Bacterial / genetics; Food Microbiology; Gene Transfer, Horizontal; Genes, Bacterial; Haplotypes; Listeria monocytogenes / classification; Listeria monocytogenes / genetics; Listeria monocytogenes / isolation & purification; Listeriosis / microbiology; Molecular Epidemiology; Molecular Sequence Data; Molecular Typing; Multiplex Polymerase Chain Reaction; Polymorphism, Single Nucleotide; Sequence Analysis, DNA; Serotyping; United States / epidemiology
TL;DR: Describing a panel of strains of serotype 4b of L. monocytogenes that produced atypical results with a serotype-specific multiplex PCR and possessed the lmo0734 to lmo739 gene cassette revealed that the genes were highly conserved (>99% identity). (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2011 journal article

Effect of direct-fed microbials on performance and Clostridium perfringens colonization of turkey poults

POULTRY SCIENCE, 90(11), 2656–2662.

By: S. Rahimi *, S. Kathariou*, J. Grimes n & R. Siletzky*

author keywords: Clostridium; turkey; enteritis; probiotic; direct-fed microbial
MeSH headings : Animals; Carrier State; Clostridium Infections / microbiology; Clostridium Infections / prevention & control; Clostridium Infections / veterinary; Clostridium perfringens; Intestinal Diseases / microbiology; Intestinal Diseases / veterinary; Intestines / microbiology; Probiotics / pharmacology; Turkeys; Weight Gain
TL;DR: Evaluating the effectiveness of a direct-fed microbial (DFM), Primalac, in preventing intestinal colonization of turkey poults with C. perfringens found that among the inoculated groups, birds fed the DFM-supplemented diet had significantly lower cecal C. perfume counts than the birds feeding the diet without the D FM. (via Semantic Scholar)
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2010 journal article

Conservation of Genomic Localization and Sequence Content of Sau3AI-Like Restriction-Modification Gene Cassettes among Listeria monocytogenes Epidemic Clone I and Selected Strains of Serotype 1/2a

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 76(16), 5577–5584.

By: S. Yildirim n, D. Elhanafi n, W. Lin *, A. Hitchins*, R. Siletzky n & S. Kathariou n

MeSH headings : Bacterial Typing Techniques; Cluster Analysis; Conserved Sequence; DNA Fingerprinting; DNA Modification Methylases / genetics; DNA Modification Methylases / metabolism; DNA Restriction-Modification Enzymes / genetics; DNA, Bacterial / chemistry; DNA, Bacterial / genetics; Deoxyribonucleases, Type II Site-Specific / genetics; Electrophoresis, Gel, Pulsed-Field; Gene Order; Genes, Bacterial; Genotype; Listeria monocytogenes / classification; Listeria monocytogenes / genetics; Molecular Sequence Data; Recombinases / genetics; Sequence Analysis, DNA; Sequence Deletion; Serotyping
TL;DR: Deletion of the RM cassette in the ECI strain F2365 and the serotype 1/2a strain A7 rendered the DNA of both strains susceptible to Sau3AI digestion, providing conclusive evidence that the cassette includes a gene required for methylation of cytosine at GATC sites in both strains. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2010 journal article

DNA Probes for Unambiguous Identification of Listeria monocytogenes Epidemic Clone II Strains

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 76(9), 3061–3068.

By: Y. Cheng n, J. Kim n, S. Lee  n, R. Siletzky n & S. Kathariou n

MeSH headings : DNA Probes / chemistry; DNA, Bacterial / chemistry; Disease Outbreaks; Humans; Listeria monocytogenes / classification; Listeria monocytogenes / genetics; Listeria monocytogenes / isolation & purification; Listeriosis / epidemiology; Sequence Analysis, DNA; United States / epidemiology
TL;DR: DNA probes were able to differentiate ECII strains of outbreak, sporadic, or environmental origin from other L. monocytogenes strains of the same serotype (4b). (via Semantic Scholar)
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2010 journal article

Differences in Methylation at GATC Sites in Genomic DNA of Campylobacter coli from Turkeys and Swine

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 76(21), 7314–7317.

By: S. Wright n, S. Wilson *, W. Miller *, R. Mandrell*, R. Siletzky n & S. Kathariou n

MeSH headings : Animals; Anti-Bacterial Agents / pharmacology; Campylobacter Infections / microbiology; Campylobacter Infections / veterinary; Campylobacter coli / drug effects; Campylobacter coli / genetics; Campylobacter coli / metabolism; DNA Methylation; DNA, Bacterial / genetics; DNA, Bacterial / metabolism; Deoxyribonucleases, Type II Site-Specific / metabolism; Drug Resistance, Microbial; Poultry Diseases / microbiology; Swine / microbiology; Swine Diseases / microbiology; Turkeys / microbiology
TL;DR: The data suggest host-associated DNA modification system(s) specific for adenine at GATC sites in C. coli from swine may be methylation of adenines at G ATC sites. (via Semantic Scholar)
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2009 journal article

Diverse Cadmium Resistance Determinants in Listeria monocytogenes Isolates from the Turkey Processing Plant Environment

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 76(2), 627–630.

By: S. Mullapudi n, R. Siletzky n & S. Kathariou n

MeSH headings : Animals; Cadmium / pharmacology; Drug Resistance; Food-Processing Industry; Listeria monocytogenes / classification; Listeria monocytogenes / drug effects; Serotyping; Turkeys / microbiology
TL;DR: Two different cadA cadmium resistance determinants (cadA1, first identified in Tn5422, and cadA2, associated with pLM80) were detected among Cadmium-resistant Listeria monocytogenes strains from turkey processing plants. (via Semantic Scholar)
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2008 journal article

Antimicrobial Susceptibility Profiles and Strain Type Diversity of Campylobacter jejuni Isolates from Turkeys in Eastern North Carolina

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 75(2), 474–482.

By: W. Gu n, R. Siletzky n, S. Wright n, M. Islam n & S. Kathariou n

MeSH headings : Animals; Anti-Bacterial Agents / pharmacology; Bacterial Typing Techniques; Biodiversity; Campylobacter jejuni / classification; Campylobacter jejuni / drug effects; Campylobacter jejuni / isolation & purification; Cluster Analysis; DNA Fingerprinting; DNA, Bacterial / genetics; Drug Resistance, Bacterial; Genotype; Microbial Sensitivity Tests; North Carolina; Turkeys / microbiology
TL;DR: The findings suggest dissemination of certain clonal groups of C. jejuni isolates in the turkey production industry of this region had identical or closely related strain types. (via Semantic Scholar)
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2008 journal article

Heavy-metal and benzalkonium chloride resistance of Listeria monocytogenes isolates from the environment of turkey-processing plants

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 74(5), 1464–1468.

By: S. Mullapudi n, R. Siletzky n & S. Kathariou n

MeSH headings : Animals; Benzalkonium Compounds / toxicity; Drug Resistance, Bacterial; Environmental Microbiology; Food-Processing Industry; Listeria monocytogenes / drug effects; Metals, Heavy / toxicity; Microbial Sensitivity Tests; Species Specificity; Turkeys; United States
TL;DR: The findings suggest that the processing environment of turkey-processing plants may constitute a reservoir for L. monocytogenes harboring resistance to cadmium and to BC and raise the possibility of common genetic elements or mechanisms mediating resistance to quaternary ammonium disinfectants and to Cadmium in L.monocyTogenes. (via Semantic Scholar)
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2008 journal article

Host Ranges of Listeria-Specific Bacteriophages from the Turkey Processing Plant Environment in the United States

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 74(21), 6623–6630.

By: J. Kim n, R. Siletzky n & S. Kathariou n

MeSH headings : Animals; Bacteriophages / classification; Bacteriophages / growth & development; Bacteriophages / isolation & purification; DNA, Viral / chemistry; DNA, Viral / genetics; Environmental Microbiology; Food Industry; Food Microbiology; Listeria / virology; Molecular Sequence Data; Sequence Analysis, DNA; Turkeys; United States; Virus Attachment
TL;DR: The isolation of Listeria-specific phages from environmental samples from four turkey processing plants in the United States suggest that phage resistance may be an important component of the ecology of L. monocytogenes in the turkeyprocessing plants. (via Semantic Scholar)
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2008 journal article

Longitudinal study of prevalence of Campylobacter jejuni and Campylobacter coli from turkeys and swine grown in close proximity

JOURNAL OF FOOD PROTECTION, 71(9), 1791–1796.

By: S. Wright n, D. Carver n, R. Siletzky n, S. Romine n, W. Morrow n & S. Kathariou n

MeSH headings : Animals; Campylobacter Infections / epidemiology; Campylobacter Infections / microbiology; Campylobacter Infections / transmission; Campylobacter Infections / veterinary; Campylobacter coli / growth & development; Campylobacter coli / isolation & purification; Campylobacter jejuni / growth & development; Campylobacter jejuni / isolation & purification; Colony Count, Microbial; Disease Reservoirs / microbiology; Disease Reservoirs / veterinary; Longitudinal Studies; Poultry Diseases / epidemiology; Poultry Diseases / microbiology; Poultry Diseases / transmission; Prevalence; Species Specificity; Swine / microbiology; Swine Diseases / epidemiology; Swine Diseases / microbiology; Swine Diseases / transmission; Turkeys / microbiology
TL;DR: Findings indicate that even though turkeys and swine grown in proximity to each other were commonly colonized with thermophilic campylobacters, the relative prevalences of C. jejuni and C. coli appear to be host associated. (via Semantic Scholar)
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2007 journal article

Clonal population structure and specific genotypes of multidrug-resistant Campylobacter coli from turkeys

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 73(7), 2156–2164.

By: C. D'lima*, W. Miller *, R. Mandrell*, S. Wright*, R. Siletzky*, D. Carver n, S. Kathariou*

MeSH headings : Animals; Campylobacter coli / classification; Campylobacter coli / drug effects; Campylobacter coli / genetics; Drug Resistance, Multiple, Bacterial / genetics; Electrophoresis, Gel, Pulsed-Field; Genetic Variation; Genome, Bacterial; Genotype; Sequence Analysis, DNA; Turkeys / microbiology
TL;DR: Analysis of multilocus sequence typing (MLST)-based sequence types of 59 MDR strains from turkeys revealed that the majority of these strains corresponded to one of 14 different STs, with three STs accounting for 41 (69%) of the strains. (via Semantic Scholar)
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2007 journal article

Effect of low temperature and culture media on the growth and freeze-thawing tolerance of Exiguobacterium strains

CRYOBIOLOGY, 54(2), 234–240.

By: T. Vishnivetskaya n, R. Siletzky n, N. Jefferies n, J. Tiedje * & S. Kathariou n

author keywords: low temperature growth; freeze-thawing; freezing tolerance; Exiguobacterium; cryotolerance; permafrost
MeSH headings : Acclimatization / physiology; Cell Culture Techniques; Cold Climate; Culture Media; Gram-Positive Asporogenous Rods / cytology; Gram-Positive Asporogenous Rods / growth & development; Gram-Positive Asporogenous Rods / physiology; Temperature
TL;DR: Surprisingly, significant protection to repeated freeze-thawing was also observed when bacteria were grown on agar at either 4 or 24 degrees C, and the effect of growth conditions (broth or surface growth, and temperature) on cryotolerance of the Exiguobacterium strains was investigated. (via Semantic Scholar)
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14. Life Below Water (OpenAlex)
15. Life on Land (Web of Science)
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Added: August 6, 2018

2004 journal article

Campylobacter colonization of sibling turkey flocks reared under different management conditions

JOURNAL OF FOOD PROTECTION, 67(7), 1463–1468.

By: K. Smith n, N. Reimers n, H. Barnes n, B. Lee n, R. Siletzky n & S. Kathariou n

MeSH headings : Animal Husbandry / methods; Animals; Campylobacter / classification; Campylobacter / growth & development; Campylobacter / isolation & purification; Campylobacter Infections / microbiology; Campylobacter Infections / transmission; Campylobacter Infections / veterinary; Disease Transmission, Infectious / veterinary; Female; Infectious Disease Transmission, Vertical / veterinary; Longitudinal Studies; Male; Poultry Diseases / microbiology; Poultry Diseases / transmission; Turkeys
TL;DR: Management practices such as proper litter maintenance, controlled traffic between the TAU farm and other turkey flocks, and other less well-defined aspects of turkey production were likely responsible for the absence of Campylobacter in theTAU flocks before harvest. (via Semantic Scholar)
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