Table 1 Summary of the studies measuring pH, CO2 and/or HCO3− levels directly in the female genital tract (uterus and/or oviduct) of different species.
Species | Organ | Estrous cycle | pH | HCO3− (mMol) | pCO2 | References |
|---|---|---|---|---|---|---|
Rabbit | Oviduct | – | 7.94 | – | – | |
Primate (Macaca mulatta) | Oviduct | Follicular phase | 7.1–7.3 | 35* | – | |
Luteal phase | 7.5–8.0 | 90* | – | |||
Menstrual cycle | – | – | 89 Torr (46–143) | |||
Bovine | Uterus | Day 0 estrous cycle | 7.22 | – | – | |
Day 1–6 estrous cycle | 7.28–7.35 | – | – | |||
Uterus | Day 0 estrous cycle (estrous) | 6.85–6.89 | – | – | ||
Day 7 estrous cycle (diestrous) | 7.03–7.15 | – | – | |||
Uterus | – | 7.00–7.05 | – | – | ||
Oviduct | Day 0–6 estrous cycle | 7.41–7.60 | – | – | ||
Uterus | Day 6–14 estrous cycle | 6.96–7.21 | – | – | ||
Equine | Uterus | Estrous | ~ 6.83–6.97 | – | – | |
Porcine | Oviduct | Estrous | 7.02 | – | – | |
Uterus | Estrous | 6.98 | – | – | ||
Oviduct | Pre-ovulatory phase | 7.76–7.96 | – | – | ||
Post-ovulatory phase | 7.37–7.40 | – | – | |||
Oviduct | Estrous | 6.7–8.3 | – | – |
