scholarly journals A type 2 A/C2 plasmid carrying the aacC4 apramycin resistance gene and the erm(42) erythromycin resistance gene recovered from two Salmonella enterica serovars

2014 ◽  
Author(s):  
C. J. Harmer ◽  
K. E. Holt ◽  
R. M. Hall
Keyword(s):  
Resistance Gene ◽  
Salmonella Enterica ◽  
Erythromycin Resistance

scholarly journals Molecular diversity and antibiotic resistance gene profile of Salmonella enterica serovars isolated from humans and food animals in Lagos, Nigeria

2019 ◽  
Vol 66 (4) ◽  
pp. 509-527 ◽  
Author(s):  
Abraham Ajayi ◽  
Stella Ifeanyi Smith ◽  
Julien Coulibaly Kalpy ◽  
Ibidunni Oreoluwa Bode-Sojobi ◽  
Yao Kouamé René ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Resistance Gene ◽  
Salmonella Enterica ◽  
Molecular Diversity ◽  
Antibiotic Resistance Gene ◽  
Gene Profile ◽  
Food Animals

scholarly journals Increased Resistance to Multiple Antimicrobials and Altered Resistance Gene Expression in CMY-2-Positive Salmonella enterica following a Simulated Patient Treatment with Ceftriaxone

2012 ◽  
Vol 78 (22) ◽  
pp. 8062-8066 ◽  
Author(s):  
Russell D. Hamilton ◽  
Holly J. Hulsebus ◽  
Samina Akbar ◽  
Jeffrey T. Gray
Keyword(s):  
Gene Expression ◽  
Antimicrobial Resistance ◽  
Resistance Gene ◽  
Resistance Genes ◽  
Salmonella Enterica ◽  
The United States ◽  
Simulated Patient ◽  
Patient Treatment ◽  
Content Type

ABSTRACTSalmonellosis is one of the most common causes of food-borne disease in the United States. Increasing antimicrobial resistance and corresponding increases in virulence present serious challenges. Currently, empirical therapy for invasiveSalmonella entericainfection includes either ceftriaxone or ciprofloxacin (E. L. Hohmann, Clin. Infect. Dis. 32:263–269, 2001). TheblaCMY-2gene confers resistance to ceftriaxone, the antimicrobial of choice for pediatric patients with invasiveSalmonella entericainfections, making these infections especially dangerous (J. M. Whichard et al., Emerg. Infect. Dis. 11:1464–1466, 2005). We hypothesized thatblaCMY-2-positiveSalmonella entericawould exhibit increased MICs to multiple antimicrobial agents and increased resistance gene expression following exposure to ceftriaxone using a protocol that simulated a patient treatmentin vitro. SevenSalmonella entericastrains survived a simulated patient treatmentin vitroand, following treatment, exhibited a significantly increased ceftriaxone MIC. Not only would these isolates be less responsive to further ceftriaxone treatment, but because theblaCMY-2genes are commonly located on large, multidrug-resistant plasmids, increased expression of theblaCMY-2gene may be associated with increased expression of other drug resistance genes located on the plasmid (N. D. Hanson and C. C. Sanders, Curr. Pharm. Des. 5:881–894, 1999). The results of this study demonstrate that a simulated patient treatment with ceftriaxone can alter the expression of antimicrobial resistance genes, includingblaCMY-2andfloRinS. entericaserovar Typhimurium andS. entericaserovar Newport. Additionally, we have shown increased MICs following a simulated patient treatment with ceftriaxone for tetracycline, amikacin, ceftriaxone, and cefepime, all of which have resistance genes commonly located on CMY-2 plasmids. The increases in resistance observed are significant and may have a negative impact on both public health and antimicrobial resistance ofSalmonella enterica.

An erythromycin-resistance gene from an erythromycin-producing strain of Arthrobacter sp

Gene ◽  
1985 ◽  
Vol 35 (3) ◽  
pp. 259-270 ◽  
Author(s):  
Anne N. Roberts ◽  
Graham S. Hudson ◽  
Sydney Brenner
Keyword(s):  
Resistance Gene ◽  
Erythromycin Resistance

Porcine circovirus type 2 potentiates morbidity of Salmonella enterica serovar Choleraesuis in Cesarean-derived, colostrum-deprived pigs

2011 ◽  
Vol 154 (1-2) ◽  
pp. 104-112 ◽  
Author(s):  
A. Takada-Iwao ◽  
M. Nakanishi ◽  
J. Souma ◽  
S. Chikata ◽  
Y. Okuda ◽  
...  
Keyword(s):  
Salmonella Enterica ◽  
Porcine Circovirus Type ◽  
Porcine Circovirus Type 2 ◽  
Porcine Circovirus

GENETICS OF LEAF RUST REACTION IN THREE INTRODUCTIONS OF COMMON WHEAT

1977 ◽  
Vol 19 (4) ◽  
pp. 711-716 ◽  
Author(s):  
P. L. Dyck
Keyword(s):  
Triticum Aestivum ◽  
Disease Resistance ◽  
Leaf Rust ◽  
Resistance Gene ◽  
Common Wheat ◽  
Infection Type ◽  
Triticum Aestivum L ◽  
Puccinia Recondita ◽  
Seedling Resistance

The genetics of seedling resistance to leaf rust (Puccinia recondita Rob. ex. Desm.) was investigated in what (Triticum aestivum L.) introductions PI 268454, PI 58548 and PI 268316, originally collected in Afghanistan, China and Iran, respectively. PI 268454 was heterogeneous for resistance. A selection (PI 268454a) has a gene that confers a 1+ reaction while a second selection (PI 268454b) probably has resistance gene Lr2b. PI 58548 has two genes for resistance, one giving a 1+ reaction and the second a 2+. These two genes interact to produce a; 1 reaction. PI 268316 has three interacting genes, one giving a 1+ reaction, the second a 2+ and a third resistance gene similar to LrB. The gene giving the 1+ reaction was common to all three introductions. PI 58548 and PI 268316 carry different genes for infection type 2+. Backcross lines of the single genes were produced. Implications to breeding for disease resistance of genes interacting to produce different phenotype are discussed.

scholarly journals Characterization of class 1 integron resistance gene cassettes in Salmonella enterica serovars Oslo and Bareily from imported seafood

2006 ◽  
Vol 58 (6) ◽  
pp. 1308-1310 ◽  
Author(s):  
A. A. Khan ◽  
C.-M. Cheng ◽  
K. T. Van ◽  
C. S. West ◽  
M. S. Nawaz ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Salmonella Enterica ◽  
Class 1 Integron ◽  
Gene Cassettes ◽  
Class 1

scholarly journals Transfer of Plasmid-Mediated CTX-M-9 from Salmonella enterica Serotype Virchow to Enterobacteriaceae in Human Flora-Associated Rats Treated with Cefixime

2009 ◽  
Vol 54 (1) ◽  
pp. 164-169 ◽  
Author(s):  
S. Faure ◽  
A. Perrin-Guyomard ◽  
J. M. Delmas ◽  
P. Chatre ◽  
M. Laurentie
Keyword(s):  
Resistance Gene ◽  
Salmonella Enterica ◽  
Transfer Rate ◽  
Intestinal Flora ◽  
Antibiotic Use ◽  
Animal Origin ◽  
E Coli ◽  
Animal Strain ◽  
Human Flora ◽  
Therapeutic Doses

ABSTRACT Food animals are a potential source of CTX-M resistance genes for humans. We evaluated the transfer of the bla CTX-M-9 gene from an animal strain of Salmonella enterica serotype Virchow to Enterobacteriaceae of the human intestinal flora by using human flora-associated (HFA) rats with and without cefixime treatment. In the absence of antibiotic, no transconjugant enterobacteria were found in the feces of HFA rats. However, the transfer rate was high if Escherichia coli J5 recipient strains were coinoculated orally with Salmonella. S. enterica serotype Virchow persisted in the rat fecal flora both during and after treatment with therapeutic doses of cefixime. The drug did not increase the transfer rate, and E. coli J5 transconjugants were eliminated from the flora before the end of cefixime treatment. No cefixime was recovered in the rat feces. In the presence of recipient strains, the bla CTX-M-9 resistance gene was transferred from a strain of animal origin to the human intestinal flora, although transconjugant colonization was transient. Antibiotic use enhanced the persistence of donor strains, increasing the resistance gene pool and the risk of its spread.

scholarly journals Nucleotide sequence of the erythromycin resistance gene from theCorynebacteriumplasmid pNG2

1990 ◽  
Vol 18 (7) ◽  
pp. 1891-1891 ◽  
Author(s):  
Adrian L.M. Hodgson ◽  
Jolanta Krywult ◽  
Anthony Radford
Keyword(s):  
Nucleotide Sequence ◽  
Resistance Gene ◽  
Erythromycin Resistance

Multi-Drug Resistance in Salmonella enterica: Efflux Mechanisms and Their Relationships with the Development of Chromosomal Resistance Gene Clusters

2006 ◽  
Vol 7 (7) ◽  
pp. 849-860 ◽  
Author(s):  
Teresa Quinn ◽  
Rebecca O'Mahony ◽  
Alan Baird ◽  
Denise Drudy ◽  
Paul Whyte ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Resistance Gene ◽  
Salmonella Enterica ◽  
Gene Clusters ◽  
Multi Drug Resistance
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