Multiple drug resistance pattern ofEscherichia coliisolated from diarrhoeic calves

2014 ◽  
Vol 38 (1) ◽  
pp. 70
Author(s):  
Vandana Gupta ◽  
Sourabh Gupta ◽  
Shailendra Singh ◽  
M. Mondal
Keyword(s):  
Drug Resistance ◽  
Multiple Drug Resistance ◽  
Resistance Pattern ◽  
Multiple Drug ◽  
Drug Resistance Pattern

scholarly journals Plasmid profile and drug resistance pattern of zoonotic Salmonella isolates from Indian buffaloes

2010 ◽  
Vol 4 (08) ◽  
pp. 477-483 ◽  
Author(s):  
Bhoj Raj Singh ◽  
Meenu Agarwal ◽  
Mudit Chandra ◽  
Meena Verma ◽  
Gautam Sharma ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Multiple Drug Resistance ◽  
Antibiotic Sensitivity ◽  
Plasmid Profile ◽  
Health Concern ◽  
Resistance Pattern ◽  
Multiple Drug ◽  
Virulence Plasmid ◽  
Buffalo Meat ◽  
Drug Resistance Pattern

Background: Buffalo is the major source of animal protein in south-east Asia, including India; therefore, the presence of multiple drug resistance in Salmonella strains of buffalo meat and milk products is of immense public health concern. Methodology: Forty-six strains of Salmonella enterica subspecies enterica  belonging to eight serovars (S. Anatum, 13; S. Weltevreden, 13; S. Rostock, 6; S. Typhimurium, 5; S. Gallinarum, 5; S. Stockholm, 1; S. Dublin, 1; and S. Orion, 2), isolated from buffalo meat and diseased buffaloes were studied for their antibiotic sensitivity and plasmid profile. Results: All except six strains of Salmonella had one or more plasmids. Virulence plasmid of ~35MdA was present in 39 isolates while 19 strains had one to six additional plasmids with molecular weight ranging from 1 Mda > 35 Mda. A plasmid-free S. Anatum strain was resistant to seven drugs including fluoroquinolones, while strains having six to seven plasmids were resistant to fewer antimicrobial drugs. One S. Anatum isolate, resistant to 11 antibiotics, had only one plasmid. Eight serovars of Salmonella could be divided into 28 resistotypes on the basis of antimicrobial sensitivity assay. Most strains were resistant to streptomycin (84.8%) followed by kanamycin (58.7%), gentamicin (52.2%), ampicillin (50%) and oxytetracycline (50%). Few strains were resistant to cefotaxime (2.2%), amoxycillin (2.2%) and newer fluoroquinolones (6.5%). Conclusion: Multiple drug resistance was common among Salmonella isolates of buffalo origin, particularly against aminoglycosides, oxytetracycin, ampicillin and cephalexin. Presence of plasmids is not mandatory for occurrence of multiple drug resistance in S. enterica strains.

​Multidrug-resistance Pattern of Antibiogram of Escherichia coli and Staphylococcus aureus Isolated from Mastitis Affected Buffaloes in Eastern Uttar Pradesh

2021 ◽  
Author(s):  
S.V. Singh ◽  
J.P. Singh ◽  
Vibha Yadav ◽  
Sandeep Kumar Yadav ◽  
Ramakant . ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Antibiotic Resistance ◽  
Multiple Drug Resistance ◽  
Antibiotic Sensitivity ◽  
Multi Drug Resistance ◽  
Resistance Pattern ◽  
Multiple Drug ◽  
E Coli ◽  
Whole Milk ◽  
Drug Resistance Pattern

Background: Mastitis is a problem of dairy animals including buffaloes. Treatment failure has become a common problem and the most cited reason is antibiotic resistance. The paper presents the scenario of antibiotic resistance with special reference to multi drug resistance pattern. Methods: Microbiological assay of mastitis affected 48 milk samples was carried out using standard protocols to establish the prevalence of mastitis caused by E. coli and S. aureus. Antibiotic sensitivity test was carried out against these organisms and the whole milk culture for commonly used antibiotics. The drug resistance pattern was established. Result: The overall prevalence of mastitis was 20%. The prevalence of E. coli and S. aureus was 29.17% and 54.17% respectively. The antibiotic sensitivity revealed that E.coli isolates were 100% susceptible to tetracycline, gentamicin, enrofloxacin and streptopenicillin followed by Ceftriaxone and sulbactum combination and streptomycin (92.86%) and ceftriaxone and methicillin (85.71%). The isolates of S. aureus were 100% sensitive to only two antibiotics gentamicin and streptopenicillin. The antibiogram of whole milk culture revealed maximum susceptibility to enrofloxacin, gentamicin and streptopeniciliin (95.83% each). Multiple drug resistance has been observed in this study.

scholarly journals Newly Emerged Serotype 1c of Shigella flexneri: Multiple Origins and Changing Drug Resistance Landscape

Genes ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 1042
Author(s):  
Pawan Parajuli ◽  
Bui Quang Minh ◽  
Naresh K. Verma
Keyword(s):  
Drug Resistance ◽  
United Kingdom ◽  
Treatment Guidelines ◽  
Shigella Flexneri ◽  
Resistance Pattern ◽  
Multiple Drug ◽  
The United Kingdom ◽  
Multiple Origins ◽  
Multiple Drug Resistant ◽  
Drug Resistance Pattern

Bacillary dysentery caused by Shigella flexneri is a major cause of under-five mortality in developing countries, where a novel S. flexneri serotype 1c has become very common since the 1980s. However, the origin and diversification of serotype 1c remain poorly understood. To understand the evolution of serotype 1c and their antimicrobial resistance, we sequenced and analyzed the whole-genome of 85 clinical isolates from the United Kingdom, Egypt, Bangladesh, Vietnam, and Japan belonging to serotype 1c and related serotypes of 1a, 1b and Y/Yv. We identified up to three distinct O-antigen modifying genes in S. flexneri 1c strains, which were acquired from three different bacteriophages. Our analysis shows that S. flexneri 1c strains have originated from serotype 1a and serotype 1b strains after the acquisition of bacteriophage-encoding gtrIc operon. The maximum-likelihood phylogenetic analysis using core genes suggests two distinct S. flexneri 1c lineages, one specific to Bangladesh, which originated from ancestral serotype 1a strains and the other from the United Kingdom, Egypt, and Vietnam originated from ancestral serotype 1b strains. We also identified 63 isolates containing multiple drug-resistant genes in them conferring resistance against streptomycin, sulfonamide, quinolone, trimethoprim, tetracycline, chloramphenicol, and beta-lactamase. Furthermore, antibiotic susceptibility assays showed 83 (97.6%) isolates as either complete or intermediate resistance to the WHO-recommended first- and second-line drugs. This changing drug resistance pattern demonstrates the urgent need for drug resistance surveillance and renewed treatment guidelines.

scholarly journals Phenotypic properties of R factors ofPseudomonas aeruginosa:R factors readily transferable betweenPseudomonasand the Enterobacteriaceae

1974 ◽  
Vol 23 (3) ◽  
pp. 239-250 ◽  
Author(s):  
P. M. Chandler ◽  
V. Krishnapillai
Keyword(s):  
Drug Resistance ◽  
Host Range ◽  
Multiple Drug Resistance ◽  
Resistance Pattern ◽  
R Factor ◽  
Specific Phage ◽  
Drug Resistance Pattern ◽  
Group 2 ◽  
R Factors ◽  
Group 1

SUMMARYR factors have been demonstrated in multiply drug resistant strains of enterobacteria andPseudomonas aeruginosain a Birmingham hospital (Lowburyet al.1969; Ingram, Richmond & Sykes, 1973). A comparative genetic analysis of these R factors has been initiated on the basis of a variety of phenotypic characteristics. This paper describes the properties of R factors derived from strains which could transfer multiple drug resistance to the recipient speciesP. aeruginosa, Escherichia coli, Shigella flexneriandSalmonella typhimurium. Two types of R factor could be recognized phenotypically. The single group 1 R factor, R18–1 which is probably the same as RPl-1 (Ingramet al.1972) was different to the group 2 R factors in many respects, including host range, R factor-specific phage plating, cellular location, drug resistance pattern, and stability. The group 2 R factors were found to be very similar to RPl (Grinstedet al.1972) and R1822 (Olsen & Shipley, 1973) with respect to their wide host range, plating of a sex specific phage, extrachromosomal location, and drug resistance pattern. Compatibility was shown between the group 1 R factor and a group 2 R factor, providing additional evidence for significant genetic differences.

scholarly journals PREVALENCE OF TSST PRODUCING COAGULASE-NEGATIVE STAPHYLOCOCCUS AUREUS IN WOUND SAMPLES AND CHARACTERIZATION OF MRSA AGAINST TEA EXTRACT

2021 ◽  
pp. 9-12
Author(s):  
MOHANADOSS PONRAJ ◽  
MANICHAM MALATHI ◽  
VASUDEO ZAMBARE ◽  
RAMASAMY SUBBAIYA
Keyword(s):  
Staphylococcus Aureus ◽  
Multiple Drug Resistance ◽  
Cost Effective ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Multiple Drug ◽  
Coagulase Negative Staphylococcus ◽  
Drug Resistance Pattern ◽  
Tea Extract

Objective: Methicillin-resistant Staphylococcus aureus (MRSA) is a potential pathogen for hospital-acquired infections. This study was conducted to determine the prevalence of MRSA using tea extract. Methods: All S. aureus isolates obtained from wound samples were studied for antibiotic resistance pattern using 23 different antibiotics. Based on coagulase negative, S. aureus isolates were identified for toxic shock syndrome toxin (TSST) gene and analyzed using PCR method. The antibacterial activities of tea extract were tested against MRSA using agar well-diffusion method. Results: A total of 100 wound samples were collected from hospital, where 75% of samples showed presence of S. aureus. About 100% resistance to cefoperazone, ampicillin, penicillin, rifampicin, novobiocin, and vancomycin antibiotics was observed. The isolates showed less resistance <50% toward chloramphenicol (30%), ciprofloxacin (25%), gentamycin (52%), amikacin (38%), and imipenem (33%). Twenty-five isolates were selected for MRSA characterization based on multiple drug resistance pattern. Coagulase-negative S. aureus isolates showed presence of TSST gene. Tea extract (2%) showed effective antibacterial activity against MRSA strains. Conclusion: The study showed the presence of MRSA at higher level and suggesting to out further epidemiological study on such infections. However, cost-effective and easily available tea extract was found to be the best antimicrobial agent for preventing such bacterial infection and to reduce the risk of emerging resistance.

scholarly journals Prevalence and molecular characteristics of ESBL and AmpC β -lactamase producing Enterobacteriaceae strains isolated from UTIs in Egypt

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Ebtisam S. Mohamed ◽  
Rasha M. M. Khairy ◽  
Soha S. Abdelrahim
Keyword(s):  
Drug Resistance ◽  
Antimicrobial Therapy ◽  
Multiple Drug Resistance ◽  
High Rate ◽  
Resistance Pattern ◽  
Molecular Characteristics ◽  
Multiple Drug ◽  
E Coli ◽  
Esbl Producers ◽  
Low Rate

Abstract Background Infections caused by Enterobacteriaceae are mainly treated with the β-lactam antibiotics, nevertheless, the emergence of species with plasmid-borne β-lactamases has decreased the efficacy of these antibiotics. Therefore, continuing studies on the resistance pattern of different regions is important for assessment of proper antimicrobial therapy protocols. The study aimed to characterize extended-spectrum β-lactamase (ESBL) and AmpC β –lactamase (AmpC) producing Enterobacteriaceae isolated from community-acquired UTIs in Egypt. Methods Out of 705 urine samples, 440 Enterobacteriaceae isolates were investigated to detect ESBL and AmpC β -lactamases producers by phenotypic and molecular methods. Results Out of 440 Enterobacteriaceae isolates, 311 were identified as ESBL producers by phenotypic testing. ESBL genes were detected in 308 isolates. BlaCTX-M-type was the most prevalent 254 (81.6%), out of them blaCTXM-15 was the commonest (152, 48.8%) followed by blaCTX-M-1 (140, 45%), blaCTX-M-8 (72, 23.1%) and lastly blaCTX-M-2 (4, 1.3%). blaTEM gene also was detected in a high rate (189, 60.7%). Two hundred and thirty-five (75.5%) of ESBL producers harbored blaCTX-M in combination with blaTEM and/or blaSHV genes. Multiple drug resistance in the ESBL-producers was significantly (P < 0.05) higher than in non–ESBL producers. Imipenem was the most effective drug against ESBL producers. Among 35 cefoxitin resistant isolates, 18 (51.4%) identified as carrying AmpC genes by multiplex PCR. Within AmpC β -lactamase genes, DHA gene was the predominant gene (15, 42.3%). CIT and MOX genes were also present, but in a low rate (5, 14.2% and 4, 11.4%) respectively. Co-existence of multiple AmpC genes was detected exclusively in K. pneumoniae isolates. E. coli isolates harbored DHA gene only. However, FOX gene was not detected in the study isolates. Seventeen of isolates carrying AmpC genes were also positive for ESBL genes. Conclusion The study shows that the prevalence of ESBL producing Enterobacteriaceae spread in south Egypt is alarming, however AmpC β -lactamase production is not so high.

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