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Table 2 Summary of PR isoform expression patterns

From: The cytoplasmic 60 kDa progesterone receptor isoform predominates in the human amniochorion and placenta at term

Tissue

PR-B1,2,3

PR-A1,3

60 kDa1,*

PR-S2

PR-M3

Amnion

-

-

+++

-

-

Chorionic cytotrophoblast

-

-

+++

-

N/D

Placental cytotrophoblast

-

-

-

-

N/D

Placental syncytiotrophoblast

-

-

+

-

N/D

Maternal decidua

++

+++

++

+

-

  1. Presence determined by 1Immunohistochemistry, 2RT-PCR, or 3Western blot.
  2. * The 60 kDa isoform is classified as cytoplasmic staining in immunohistochemistry; + weak presence, ++ moderate presence, or +++strong presence, N/D not determined.
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Reproductive Biology and Endocrinology

ISSN: 1477-7827

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