Efficacy of PGF2α to synchronize estrus in water buffalo cows (Bubalus bubalis) is dependent upon plasma progesterone concentration, corpus luteum size and ovarian follicular status before treatment

2002 ◽  
Vol 73 (1-2) ◽  
pp. 23-35 ◽  
Author(s):  
L.F.C Brito ◽  
R Satrapa ◽  
E.P Marson ◽  
J.P Kastelic
Keyword(s):  
Corpus Luteum ◽  
Water Buffalo ◽  
Bubalus Bubalis ◽  
Progesterone Concentration ◽  
Plasma Progesterone

PROGESTERONE IN THE HUMAN PERIPHERAL BLOOD IN THE PREOVULATORY PERIOD OF THE MENSTRUAL CYCLE

1967 ◽  
Vol 55 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Benno Runnebaum ◽  
Josef Zander
Keyword(s):  
Menstrual Cycle ◽  
Corpus Luteum ◽  
Peripheral Blood ◽  
Human Peripheral Blood ◽  
Progesterone Concentration ◽  
Plasma Progesterone ◽  
Progesterone Secretion ◽  
Graafian Follicle ◽  
The Mean ◽  
Mean Concentration

ABSTRACT Progesterone was determined and identified in human peripheral blood during the preovulatory period of the menstrual cycle, by combined isotope derivative and recrystallization analysis. The mean concentration of progesterone in 1.095 ml of plasma obtained 9 days before ovulation was 0.084 μg/100 ml. However, the mean concentration of progesterone in 1.122 ml of plasma obtained 4 days before ovulation was 0.279 μg/100 ml. These data demonstrate a source of progesterone secretion other than the corpus luteum. The higher plasma-progesterone concentration 4 days before ovulation may indicate progesterone secretion of the ripening Graafian follicle of the ovary.

Induction of ovulation with GnRH or oestradiol benzoate lowers plasma progesterone concentration within the first week of ovulation in non-lactating Holstein cows

2003 ◽  
Vol 2003 ◽  
pp. 1-1
Author(s):  
B.V.E. Segwagwe ◽  
K.L. Macmillan ◽  
P.D. Mansell
Keyword(s):  
Comparative Study ◽  
Corpus Luteum ◽  
Holstein Cows ◽  
New Wave ◽  
Progesterone Concentration ◽  
Plasma Progesterone ◽  
Induction Of Ovulation ◽  
Follicular Wave ◽  
Oestradiol Benzoate

Oestrous synchronisation involves synchronisation of ovarian follicular turnover, new wave emergence, and finally induction of ovulation which can be achieved with an injection of either GnRH (Pursley et al. 1997)or oestradiol benzoate (ODB) (Day et al. 2000). A comparative study investigating corpus luteum (CL) and follicular emergence after the administration of either GnRH or ODB at pro-oestrus has not been reported. It was hypothesised that the injection of ODB at pro-oestrus would delay emergence of the first post-ovulatory follicular wave, but that CL development and plasma progesterone concentrations would be similar in cows induced to ovulate with either GnRH or ODB.

scholarly journals Corpus luteum function in the pig: progesterone profiles of cyclic and pregnant gilts.

1990 ◽  
Vol 38 (1) ◽  
pp. 45-52
Author(s):  
J. van der Meulen ◽  
F.A. Helmond ◽  
C.P.J. Oudenaarden
Keyword(s):  
Corpus Luteum ◽  
Progesterone Concentration ◽  
Plasma Progesterone

Progesterone profiles of 7 cycling gilts and those of 6 gilts inseminated on day 1 (1 day after the onset of oestrus) were studied. The results showed that plasma progesterone concentration in the inseminated group was higher (P

PERIOVULATORY LEVELS OF PLASMA PROGESTERONE AND LUTEINIZING HORMONE IN WOMEN

1969 ◽  
Vol 62 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Elof D. B. Johansson ◽  
Leif Wide
Keyword(s):  
Body Temperature ◽  
Luteinizing Hormone ◽  
Corpus Luteum ◽  
Basal Body ◽  
Significant Rise ◽  
Rapid Rise ◽  
Progesterone Concentration ◽  
Basal Body Temperature ◽  
Plasma Progesterone ◽  
Menstrual Cycles

ABSTRACT Plasma LH and progesterone levels were measured around the time of ovulation in 16 normal menstrual cycles. No increased levels of progesterone were found before the LH peak. The maximal LH peak levels lasted for 16–20 h at which time the plasma progesterone rose to a concentration of 1 to 2 ng/ml. Following the fall in the LH concentration, there was a rapid rise in the plasma progesterone concentration, indicating the formation of a corpus luteum. The lowest basal body temperature coincided with the first significant rise in LH levels.

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