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Appearance of ?-lactam Resistance Genes in Agricultural Soils and Clinical Isolates over the 20th Century.

ABSTRACT: Debate exists about whether agricultural versus medical antibiotic use drives increasing antibiotic resistance (AR) across nature. Both sectors have been inconsistent at antibiotic stewardship, but it is unclear which sector has most influenced acquired AR on broad scales. Using qPCR and soils archived since 1923 at Askov Experimental Station in Denmark, we quantified four broad-spectrum ?-lactam AR genes (ARG; bla(TEM), bla(SHV), bla(OXA) and bla(CTX-M)) and class-1 integron genes (int1) in soils from manured (M) versus inorganic fertilised (IF) fields. "Total" ?-lactam ARG levels were significantly higher in M versus IF in soils post-1940 (paired-t test; p?

SUBMITTER: Graham DW

PROVIDER: S-EPMC4754643 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Appearance of β-lactam Resistance Genes in Agricultural Soils and Clinical Isolates over the 20th Century.

Graham David W DW Knapp Charles W CW Christensen Bent T BT McCluskey Seánín S Dolfing Jan J

Scientific reports 20160216

Debate exists about whether agricultural versus medical antibiotic use drives increasing antibiotic resistance (AR) across nature. Both sectors have been inconsistent at antibiotic stewardship, but it is unclear which sector has most influenced acquired AR on broad scales. Using qPCR and soils archived since 1923 at Askov Experimental Station in Denmark, we quantified four broad-spectrum β-lactam AR genes (ARG; bla(TEM), bla(SHV), bla(OXA) and bla(CTX-M)) and class-1 integron genes (int1) in soi ...[more]

PMID: 26878889

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