P2X(3) receptor subunit messenger RNA expression in the female mouse bladder after oophorectomy with or without estrogen replacement.
OBJECTIVE
This investigation was undertaken to determine whether the sensory neuron adenosine triphosphate receptor subunit (P2X(3)) messenger RNA expression is altered in female mouse bladders after surgical oophorectomy with or without estrogen replacement.


METHODS
The mean relative concentrations of the P2X(3) receptor in 30 female mouse bladders (10 sham operated, 10 oophorectomized, and 10 oophorectomized with estrogen replacement) were determined with quantitative reverse transcription-polymerase chain reaction analysis.


RESULTS
P2X(3) expression increased after surgical oophorectomy (0.91 +/- 0.16 vs 1.04 +/- 0.11, P =.048). However, P2X(3) expression after oophorectomy and immediate estrogen replacement did not differ from that of oophorectomy alone (1.11 +/- 0.15 vs 1.04 +/- 0.11, P =.206).


CONCLUSIONS
The P2X(3) sensory neuron receptor messenger RNA expression is increased after oophorectomy but is not influenced by subsequent estrogen replacement. This has clinical significance because sensory neuron receptors may be associated with certain forms of bladder dysfunction.
Departments of Obstetrics and Gynecology, Division of Gynecological Surgery, Mayo Clinic, Rochester, MN 55905, USA. carley.michael@mayo.edu
Michael E
ME
Carley
William A
WA
Cliby
Thomas C
TC
Spelsberg
D000818:Animals; D004958:Estradiol / Q000502:physiology*; D015914:Estrogen Replacement Therapy; D005260:Female; D015870:Gene Expression; D051379:Mice; D010052:Ovariectomy; D012333:RNA, Messenger / Q000235:genetics; D018048:Receptors, Purinergic P2 / Q000235:genetics / Q000378:metabolism*; D058477:Receptors, Purinergic P2X3; D020133:Reverse Transcriptase Polymerase Chain Reaction; D001743:Urinary Bladder / Q000378:metabolism*
C546409:P2rx3 protein, mouse; D012333:RNA, Messenger; D018048:Receptors, Purinergic P2; D058477:Receptors, Purinergic P2X3; D004958:Estradiol