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Table 1 Effect of in vivo passage of Chlamydia spp. stocks on Mycoplasma contamination

From: Elimination of Mycoplasma contamination in Chlamydia stocks as a result of in vivo passage or plaque isolation

Species (strain) route

Isolates tested (mouse strain)

Result, in vitro pass 1

Result, in vitro pass 2

MycoAlertâ„¢

PCRa

MycoAlertâ„¢

PCRa

C. muridarum (Weiss strain) intravaginal

Culture stockb

+

+

+2

+

c-vc swab 1 (BALB/c) day 4

−

−

−

nd

c-v swab 2 (BALB/c) day 4

−

−

−

nd

c-v swab 3 (BALB/c) day 4

−

−

−

nd

c-v swab 4 (C3H/HeN) day 4

−

−

−

nd

c-v swab 5 (C3H/HeN) day 4

−

−

−

nd

c-v swab 6 (C3H/HeN) day 4

−

−

−

nd

C. trachomatis (serovar E/Bour) intravaginal

Culture stockb

+

+

+

+

c-v swab 1 (C57BL/6) day 4

−

−

−

−

c-v swab 2 (C57BL/6) day 4

−

−

−

−

c-v swab 3 (C57BL/6) day 4

−

−

−

−

c-v swab 4 (C57BL/6) day 4

−

−

−

−

c-v swab 5 (C57BL/6) day 7

−

−

−

−

c-v swab 6 (C57BL/6) day 7

−

−

−

−

c-v swab 7 (C57BL/6) day 7

−

−

−

−

c-v swab 8 (C57BL/6) day 7

−

−

−

−

C. pneumoniae (TW-183) intranasal

Culture stockb

+

+

+

+

Lung 1 (C57BL/6) day 4

−

−

−

−

Lung 2 (C57BL/6) day 4

−

−

−

−

Lung 3 (C57BL/6) day 4

−

−

−

−

Lung 4 (C57BL/6) day 4

−

−

−

−

Lung 5 (C57BL/6) day 7

−

−

−

−

Lung 6 (C57BL/6) day 7

−

−

−

−

Lung 7 (C57BL/6) day 7

−

−

−

−

Lung 8 (C57BL/6) day 7

−

−

−

−

  1. aPCR for GPO-3/MGSO positive with a PCR product band at the anticipated size of ~ 270 bp on agarose gel electrophoresis. A positive control for chlamydial 16 rRNA was included in each reaction
  2. bAll culture stocks of each of these strains repeatedly tested positive by MycoAlertâ„¢. In this assay, a before/after ratio of ATP of 1.0 or greater is considered a positive result by the manufacturer. All of our culture stocks were positive between 5.0 and 16.0 in multiple tests for each stock
  3. cc-v = cervical vaginal swab collected as previously described in Cotter et al. [9];
  4. nd not determined