Pentatrichomonas hominis (Davaine) Wenrich (ATCC® PRA-151)

Organism: Pentatrichomonas hominis (Davaine) Wenrich  /  Depositor: LS Diamond, BM Honigberg

Permits and Restrictions

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Strain Designations FcF-1:UM
Biosafety Level 2
Isolation
feces, animal
Amherst Massachusetts, United States
Isolation date: October, 1988
Product Format frozen
Storage Conditions liquid nitrogen vapor phase
Type Strain no
Growth Conditions
Temperature: 37.0°C
Duration: axenic
Interval: 3 times per week
Subcultivation
Interval: 3 times per week
Cryopreservation
Storage temperature: liquid nitrogen vapor phase

1.  Harvest cells from a culture that is at or near peak density by centrifugation at 800 x g for 5 min. The cells grown in a medium containing agar are concentrated by centrifugation, a solid pellet does not form. The soft pellet is re-suspended to desired cell concentration with agar-free supernatant.

2.  Adjust the concentration of cells to 2 x 106 - 107/ml in fresh medium.

3.  While cells are centrifuging prepare a 10% (v/v) solution of sterile DMSO in fresh medium.

a) Add 1.0 ml of DMSO to an ice cold 20 x 150 mm screw-capped test tube;

b) Place the tube on ice and allow the DMSO to solidify (~5 min) and then add 9.0 ml of ice cold medium;

c) Invert several times to dissolve the DMSO;

d) Allow to warm to room temperature.

4.  Mix the cell preparation and the DMSO in equal portions. Thus, the final concentration will be 106 - 107 cells/ml and 5% (v/v) DMSO. The time from the mixing of the cell preparation and DMSO stock solution before the freezing process is begun should no less than 15 min and no longer than 30 min.

5.  Dispense in 0.5 ml aliquots into 1.0 - 2.0 ml sterile plastic screw-capped cryules (special plastic vials for cryopreservation).

6.   Place the vials in a controlled rate freezing unit.  From room temperature cool at -1°C/min to -40°C.  If the freezing unit can compensate for the heat of fusion, maintain rate at        -1°C/min through the heat of fusion.  At -40°C plunge into liquid nitrogen. Alternatively, place the vials in a Nalgene 1°C freezing apparatus.  Place the apparatus at -80°C for 1.5 to 2 hours and then plunge ampules into liquid nitrogen.  (The cooling rate in this apparatus is approximately

      -1°C/min.) 

7.  The frozen preparations should be stored in either the vapor or liquid phase of a nitrogen refrigerator. Frozen preparations stored below -130°C are stabile indefinitely. Those stored at temperatures above -130°C are progressively less stabile as the storage temperature is elevated. Vials should not be stored above -55°C.

8.   To establish a culture from the frozen state place an ampule in a water bath set at 35°C. Immerse the vial just to a level just above the surface of the frozen material. Do not agitate the vial.

9.   Immediately after thawing, do not leave in the water bath, aseptically remove the contents of the ampule and inoculate a 16 x 125 mm screw-capped test tube containing 13 ml of ATCC medium 2154.

10.          Incubate the culture on a 15° horizontal slant at 35°C.

Name of Depositor LS Diamond, BM Honigberg
Chain of Custody
L S Diamond
B M Honigberg
Year of Origin October, 1988
References

Isolated from feces of a cat (Felis catus) suffering from severe diarrhea.

Clark CG, Diamond LS. Methods for cultivation of luminal parasitic protists of clinical importance. Clin. Microbiol. Rev. 15: 329-341, 2002. PubMed: 12097242

Notice: Necessary PermitsPermits

These permits may be required for shipping this product:

  • Customers located in the state of Hawaii will need to contact the Hawaii Department of Agriculture to determine if an Import Permit is required. A copy of the permit or documentation that a permit is not required must be sent to ATCC in advance of shipment.
Basic Documentation