caption a7 organism antibiotic mic  (ATCC)

Journal:

Article Title: Characteristics and Dynamics of Bacterial Populations during Postantibiotic Effect Determined by Flow Cytometry

doi:

Figure Lengend Snippet: MICs, multiples of MICs, and duration of PAEs for organism-antibiotic combinations studied by flow cytometry

Article Snippet: Growth curves from typical PAE experiments with ceftriaxone and ciprofloxacin (each at a concentration equivalent to twice the MIC) against E. coli are shown in Fig. A. table ft1 table-wrap mode="anchored" t5 TABLE 1 caption a7 Organism Antibiotic MIC (μg/ml) Multiple of MIC PAE (h) E. coli ATCC 25922 Ampicillin 2.0 2 −0.3 4 −0.4 8 −0.3 Ceftriaxone 0.03 2 −0.3 4 −0.2 8 −0.5 Gentamicin 1.0 1 0.7 2 0.6 Ciprofloxacin 0.015 1 1.5 2 2.7 Rifampin 16 1 0.6 2 1.5 P. aeruginosa ATCC 27853 Imipenem 2.0 2 1.3 4 1.9 8 2.6 Ciprofloxacin 0.5 2 0.7 Open in a separate window MICs, multiples of MICs, and duration of PAEs for organism-antibiotic combinations studied by flow cytometry fig ft0 fig mode=article f1 fig/graphic|fig/alternatives/graphic mode="anchored" m1 Open in a separate window FIG. 1 caption a7 (A) A typical PAE experiment for E. coli ATCC 25922 after exposure to ceftriaxone or ciprofloxacin (each at a concentration equivalent to twice the MIC), as determined by viability counting.

Techniques:

Journal:

Article Title: Characteristics and Dynamics of Bacterial Populations during Postantibiotic Effect Determined by Flow Cytometry

doi:

Figure Lengend Snippet: (A) A typical PAE experiment for E. coli ATCC 25922 after exposure to ceftriaxone or ciprofloxacin (each at a concentration equivalent to twice the MIC), as determined by viability counting. As shown, no PAE was seen after ceftriaxone exposure, but ciprofloxacin induced a PAE of 1.9 h. The organisms were stained with propidium iodide and examined by fluorescence microscopy. (B through D) Photomicrographs of untreated control organisms (B), ceftriaxone-exposed organisms 35 min after drug removal (C), and ciprofloxacin-exposed organisms 270 min after drug removal (D). Both antibiotics induced filamentation, but this morphological form persisted past the classically defined PAE in organisms exposed to ciprofloxacin. Magnification, ×880.

Article Snippet: Growth curves from typical PAE experiments with ceftriaxone and ciprofloxacin (each at a concentration equivalent to twice the MIC) against E. coli are shown in Fig. A. table ft1 table-wrap mode="anchored" t5 TABLE 1 caption a7 Organism Antibiotic MIC (μg/ml) Multiple of MIC PAE (h) E. coli ATCC 25922 Ampicillin 2.0 2 −0.3 4 −0.4 8 −0.3 Ceftriaxone 0.03 2 −0.3 4 −0.2 8 −0.5 Gentamicin 1.0 1 0.7 2 0.6 Ciprofloxacin 0.015 1 1.5 2 2.7 Rifampin 16 1 0.6 2 1.5 P. aeruginosa ATCC 27853 Imipenem 2.0 2 1.3 4 1.9 8 2.6 Ciprofloxacin 0.5 2 0.7 Open in a separate window MICs, multiples of MICs, and duration of PAEs for organism-antibiotic combinations studied by flow cytometry fig ft0 fig mode=article f1 fig/graphic|fig/alternatives/graphic mode="anchored" m1 Open in a separate window FIG. 1 caption a7 (A) A typical PAE experiment for E. coli ATCC 25922 after exposure to ceftriaxone or ciprofloxacin (each at a concentration equivalent to twice the MIC), as determined by viability counting.

Techniques: Concentration Assay, Staining, Fluorescence, Microscopy, Control

Journal:

Article Title: Characteristics and Dynamics of Bacterial Populations during Postantibiotic Effect Determined by Flow Cytometry

doi:

Figure Lengend Snippet: Histograms showing a comparison of the size distribution (FSC-H) (left panels) and nucleic acid content (FL2-H) (middle panels) of E. coli during the PAE after exposure to ampicillin at a concentration equivalent to twice the MIC at 35 min after drug removal and after exposure to rifampin at a concentration equivalent to the MIC (lower panels) at 90 min after drug removal. Dotted-and-dashed lines, control organisms; solid lines, organisms previously exposed to the antibiotics. (Upper right graph) Progressive changes in size, compared to sizes of control organisms, as a function of time after previous exposure to ampicillin. (Lower right graph) Summary of the minimal changes in size that were noted after previous exposure to rifampin. The sizes of the antibiotic-treated organisms were compared to three size intervals derived from the control, which are described in text and shown in Fig. ​Fig.2.2. Open circles, bacteria in the PAE phase which were within 2 SDs of control size; solid squares, bacteria within 2 to 4 SDs; open squares, organisms >4 SDs from the control distribution.

Article Snippet: Growth curves from typical PAE experiments with ceftriaxone and ciprofloxacin (each at a concentration equivalent to twice the MIC) against E. coli are shown in Fig. A. table ft1 table-wrap mode="anchored" t5 TABLE 1 caption a7 Organism Antibiotic MIC (μg/ml) Multiple of MIC PAE (h) E. coli ATCC 25922 Ampicillin 2.0 2 −0.3 4 −0.4 8 −0.3 Ceftriaxone 0.03 2 −0.3 4 −0.2 8 −0.5 Gentamicin 1.0 1 0.7 2 0.6 Ciprofloxacin 0.015 1 1.5 2 2.7 Rifampin 16 1 0.6 2 1.5 P. aeruginosa ATCC 27853 Imipenem 2.0 2 1.3 4 1.9 8 2.6 Ciprofloxacin 0.5 2 0.7 Open in a separate window MICs, multiples of MICs, and duration of PAEs for organism-antibiotic combinations studied by flow cytometry fig ft0 fig mode=article f1 fig/graphic|fig/alternatives/graphic mode="anchored" m1 Open in a separate window FIG. 1 caption a7 (A) A typical PAE experiment for E. coli ATCC 25922 after exposure to ceftriaxone or ciprofloxacin (each at a concentration equivalent to twice the MIC), as determined by viability counting.

Techniques: Comparison, Concentration Assay, Control, Derivative Assay, Bacteria

Journal:

Article Title: Characteristics and Dynamics of Bacterial Populations during Postantibiotic Effect Determined by Flow Cytometry

doi:

Figure Lengend Snippet: Histograms showing a comparison of the size distributions (FSC-H; left panels) and nucleic acid contents (FL2-H; middle panels) of E. coli during the PAE after exposure to ciprofloxacin at a concentration equivalent to the MIC and at a concentration equivalent to twice the MIC at 270 min after drug removal. Dotted-and-dashed lines, control organisms; solid lines, bacteria previously exposed to ciprofloxacin. Graphs (right panels) show progressive changes in size compared to sizes of controls. The sizes of antibiotic-treated organisms were compared to three control size intervals described in the text and shown in Fig. ​Fig.2.2. Open circles, bacteria within 2 SDs of control size; solid squares, bacteria within 2 to 4 SDs; open squares, organisms >4 SDs from the control distribution.

Article Snippet: Growth curves from typical PAE experiments with ceftriaxone and ciprofloxacin (each at a concentration equivalent to twice the MIC) against E. coli are shown in Fig. A. table ft1 table-wrap mode="anchored" t5 TABLE 1 caption a7 Organism Antibiotic MIC (μg/ml) Multiple of MIC PAE (h) E. coli ATCC 25922 Ampicillin 2.0 2 −0.3 4 −0.4 8 −0.3 Ceftriaxone 0.03 2 −0.3 4 −0.2 8 −0.5 Gentamicin 1.0 1 0.7 2 0.6 Ciprofloxacin 0.015 1 1.5 2 2.7 Rifampin 16 1 0.6 2 1.5 P. aeruginosa ATCC 27853 Imipenem 2.0 2 1.3 4 1.9 8 2.6 Ciprofloxacin 0.5 2 0.7 Open in a separate window MICs, multiples of MICs, and duration of PAEs for organism-antibiotic combinations studied by flow cytometry fig ft0 fig mode=article f1 fig/graphic|fig/alternatives/graphic mode="anchored" m1 Open in a separate window FIG. 1 caption a7 (A) A typical PAE experiment for E. coli ATCC 25922 after exposure to ceftriaxone or ciprofloxacin (each at a concentration equivalent to twice the MIC), as determined by viability counting.

Techniques: Comparison, Concentration Assay, Control, Bacteria

Journal:

Article Title: Characteristics and Dynamics of Bacterial Populations during Postantibiotic Effect Determined by Flow Cytometry

doi:

Figure Lengend Snippet: Histograms showing the size distributions (FSC-H; left panels) and nucleic acid contents (FL2-H; middle panels) of P. aeruginosa during the PAE after exposure to imipenem at a concentration equivalent to twice the MIC and to ciprofloxacin at a concentration equivalent to the MIC at 180 and 70 min after drug removal, respectively. Dotted-and-dashed lines, control organisms; solid lines, antibiotic-exposed organisms. The graphs (right panels) show progressive changes in size compared to sizes of controls. The sizes of antibiotic-treated organisms were compared to three control size intervals described in text and shown in Fig. ​Fig.2.2. Open circles, bacteria within 2 SDs of control size; solid squares, bacteria within 2 to 4 SDs; open squares, organisms >4 SDs from the control distribution.

Article Snippet: Growth curves from typical PAE experiments with ceftriaxone and ciprofloxacin (each at a concentration equivalent to twice the MIC) against E. coli are shown in Fig. A. table ft1 table-wrap mode="anchored" t5 TABLE 1 caption a7 Organism Antibiotic MIC (μg/ml) Multiple of MIC PAE (h) E. coli ATCC 25922 Ampicillin 2.0 2 −0.3 4 −0.4 8 −0.3 Ceftriaxone 0.03 2 −0.3 4 −0.2 8 −0.5 Gentamicin 1.0 1 0.7 2 0.6 Ciprofloxacin 0.015 1 1.5 2 2.7 Rifampin 16 1 0.6 2 1.5 P. aeruginosa ATCC 27853 Imipenem 2.0 2 1.3 4 1.9 8 2.6 Ciprofloxacin 0.5 2 0.7 Open in a separate window MICs, multiples of MICs, and duration of PAEs for organism-antibiotic combinations studied by flow cytometry fig ft0 fig mode=article f1 fig/graphic|fig/alternatives/graphic mode="anchored" m1 Open in a separate window FIG. 1 caption a7 (A) A typical PAE experiment for E. coli ATCC 25922 after exposure to ceftriaxone or ciprofloxacin (each at a concentration equivalent to twice the MIC), as determined by viability counting.

Techniques: Concentration Assay, Control, Bacteria