Does progesterone administration in preterm labor influence Treg cells?
OBJECTIVE
The aim of this study was to determine if the actions of progesterone on preterm labor are accomplished through modulation of the percentage of regulatory T-cells (Treg).


METHODS
The study was a cohort pilot study made in a single center tertiary obstetrical unit with women in preterm labor arrested with tocolytic treatment. Variation of the number and percentage of Treg cells obtained from peripheral blood samples of women with preterm labor were calculated by flow cytometry, before and after progesterone administration.


RESULTS
In the paired samples for each patient, there was a significant difference in the Treg cell pool after progesterone treatment, with an increase in both their percentage (48.9 vs. 53; P=0.07) and absolute number (14.8 vs. 56.5 cells/μL; P=0.046).


CONCLUSIONS
This research demonstrated a considerable increase in the Treg cell pool after progesterone treatment. This indicates a possible mechanism for progesterone treatment benefits in preterm labor, potentially increasing its more rational use.
Ana Luísa
http://orcid.org/0000-0003-2371-8907
AL
Areia
Sofia
S
Vale-Pereira
Ana
A
Vaz-Ambrósio
Vera
V
Alves
Paulo
P
Rodrigues-Santos
Manuel Santos
MS
Rosa
Paulo
P
Moura
Anabela
A
Mota-Pinto
D000328:Adult; D015415:Biomarkers / Q000097:blood; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007752:Obstetric Labor, Premature / Q000188:drug therapy* / Q000276:immunology; D010865:Pilot Projects; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology* / Q000627:therapeutic use; D050378:T-Lymphocytes, Regulatory / Q000187:drug effects* / Q000378:metabolism; D015145:Tocolysis / Q000379:methods*; D015149:Tocolytic Agents / Q000494:pharmacology* / Q000627:therapeutic use; D016896:Treatment Outcome; D014668:Vasotocin / Q000031:analogs & derivatives / Q000627:therapeutic use
D015415:Biomarkers; D015149:Tocolytic Agents; C047046:atosiban; D011374:Progesterone; D014668:Vasotocin