We investigated a specific relationship between the expression of annexin 5 and prolactin in the corpus luteum of pseudopregnant rats, with particular interest in GnRH and apoptosis of luteal cells. The expression of ovarian annexin 5 mRNA was significantly decreased at mid-pseudopregnancy and recovered at the end, whereas it remained low on the corresponding day of pregnancy. The dopamine agon...

Ten mature virgin rabbit does (4-5 months old) with mean weight of 2.4 kg were induced to ovulate; by intramuscular injection of HCG (50-70 IU). The day of induction was considered 0 days. Uteri were obtained from 14 h, 3, 7, 18 days post induction. At first stage of pseudopregnancy; the two uteri became hyperemic and slightly swollen. The uterine epithelium and endometrial glands epithelium we...

was explored during various stages of pseudopregnancy, including natural and induced luteal regression. Induced luteolysis was achieved during mid-pseudopregnancy by removal of an oestradiol capsule placed at the onset of pseudopregnancy, which suppressed ovarian oestradiol production. Activity of manganese superoxide dismutase (Mn SOD) was significantly and positively correlated with ovarian p...

The effectiveness of infrared thermography (IRT) in the diagnosis pseudopregnant rabbits, change these images pseudopregnancy process, and its relationship with serum progesterone (P4) level was investigated. Fourteen healthy female rabbits New Zealand breed were divided into two study groups. Pseudopregnancy induction performed first group GnRH injection (0.2 ml Buserelin acetate, intramuscula...

Groups of rats experienced mechanical stimulation of the vagino-cervical region in induce pseudopregnancy at various intervals from 0900 h on dioestrus -- 1 (D -- 1) to 1800 h on D -- 2. Twenty-four of 26 rats which were stimulated on D -- 1 experienced immediate pseudopregnancy whereas when the stimulus was given on D -- 2, 39 of 45 rats continued to cycle and the latest time when such mechani...

This chapter reviews the most relevant features of the patho-physiology, clinical signs, diagnosis, treatment and prevention of overt, i.e. clinical, pseudopregnancy in dogs. Clinical pseudopregnancy is a syndrome observed in non-pregnant dogs and is characterized by clinical signs such as nesting, weight gain, mammary enlargement and lactation. It typically occurs in nonpregnant bitches about ...

Changes in sexual behavior and progesterone, oestrone, oestradiol, testosterone and androstenedione concentrations have been studied in the follicular fluid of 25 pseudopregnant rabbits on Days 6, 9, 12, 15 and 18. The sexual behavior score seemed to rise at the end of pseudopregnancy and follicular steroid levels were higher on Days 6 and 18 of pseudopregnancy than on Days 9, 12 or 15. The gen...

or pieces of endometrium to the cheek pouch of hysterectomized animals significantly reduces the length of induced pseudopregnancy from 18 to 13\m=.\5 days (Caldwell, Mazer & Wright, 1967). These authors also reported that transplanting rat uteri to the cheek pouch also reduced pseudopregnancy in hysterectomized hamsters (14\m=.\8days), whereas the effects of transplanting rabbit uteri (15\m=.\...

After ovulation, non-pregnant female giant pandas experience pseudopregnancy. During pseudopregnancy, non-pregnant females exhibit physiological and behavioral changes similar to pregnancy. Monitoring hormonal patterns that are usually different in pregnant mammals are not effective at determining pregnancy status in many animals that undergo pseudopregnancy, including the giant panda. Therefor...

During pseudopregnancy in the rabbit, plasma progesterone levels in the posterior vena cava fell rapidly from maximal concentrations of 9.8 +/- 0.7 (s.e.m.) ng/ml on Day 13 of pseudopregnancy to 2.0 +/- 0.6 ng/ml on Day 15. There was no significant increase in PGF levels at this time, although administration of indomethacin to a similar group of does delayed functional regression for over 7 day...