Plasma progesterone concentration and reproductive function relative to thyroid activity in postpartum buffaloes (Bubalus bubalis)

1989 ◽  
Vol 13 (6) ◽  
pp. 407-412 ◽  
Author(s):  
C. S. Bahga
Keyword(s):  
Reproductive Function ◽  
Bubalus Bubalis ◽  
Progesterone Concentration ◽  
Thyroid Activity ◽  
Plasma Progesterone

Relationship between plasma leptin concentration and reproductive function in dairy cows

2002 ◽  
Vol 2002 ◽  
pp. 2-2 ◽  
Author(s):  
GE Mann ◽  
D Blache
Keyword(s):  
Dairy Cows ◽  
Post Partum ◽  
Plasma Concentrations ◽  
Reproductive Function ◽  
Progesterone Concentration ◽  
Metabolic Demand ◽  
Plasma Progesterone ◽  
Progesterone Secretion ◽  
High Incidence ◽  
Plasma Leptin

In modern dairy cows, poor fertility is an ever-increasing problem. Milk progesterone analysis has revealed that this poor fertility is associated with a high incidence of reproductive cycle problems during the post partum period and with reduced progesterone secretion following mating. One of the likely causes of these problems is the increasing metabolic demand placed on these cows by increasing milk yield. In recent years, the search for an endocrine link between nutritional status and reproductive function has focussed on leptin. The aim of the present study was to determine whether plasma concentrations of leptin differ between cows with and without post partum reproductive problems and to determine if any relationship exists between plasma leptin and post mating plasma progesterone concentration.

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.

scholarly journals Expression Profiles of the Progesterone Receptor, Cyclooxygenase-2, Growth Differentiation Factor 9, and Bone Morphogenetic Protein 15 Transcripts in the Canine Oviducts during the Oestrous Cycle

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 454
Author(s):  
Jaime Palomino ◽  
Javiera Flores ◽  
Georges Ramirez ◽  
Victor H. Parraguez ◽  
Monica De los Reyes
Keyword(s):  
Gene Expression ◽  
Bone Morphogenetic Protein ◽  
Cyclooxygenase 2 ◽  
Oestrous Cycle ◽  
Progesterone Concentration ◽  
Plasma Progesterone ◽  
Morphogenetic Protein ◽  
Growth Differentiation Factor 9 ◽  
Bone Morphogenetic Protein 15 ◽  
Cox 2

The gene expression in the canine oviduct, where oocyte maturation, fertilization, and early embryonic development occur, is still elusive. This study determined the oviductal expression of (PR), cyclooxygenase-2 (COX-2), growth differentiation factor 9 (GDF-9), and bone morphogenetic protein 15 (BMP-15) during the canine oestrous cycle. Samples were collected from bitches at anoestrus (9), proestrus (7), oestrus (8), and dioestrus (11), after routine ovariohysterectomy and the ovarian surface structures and plasma progesterone concentration evaluated the physiological status of each donor. The oviductal cells were isolated and pooled. Total RNA was isolated, and gene expression was assessed by qPCR followed by analysis using the t-test and ANOVA. The PR mRNA increased (P < 0.05) from the anoestrus to dioestrus with the plasma progesterone concentration (r = 0.8). COX-2 mRNA expression was low in the anoestrus and proestrus, and negligible in the oestrus, while it was around 10-fold higher (P < 0.05) in the dioestrus. The GDF-9 mRNA was expressed during all phases of the oestrous cycle and was most abundant (P < 0.05) during oestrus phase. The BMP-15 mRNA decreased (P < 0.05) in the anoestrus and proestrus phases. Thus, the transcripts were differentially expressed in a stage-dependent manner, suggesting the importance of oestrous cycle regulation for successful reproduction in dogs.

scholarly journals Ovarian follicular dynamic and plasma progesterone concentration in Alpine goats on the breeding season

2018 ◽  
Vol 70 (6) ◽  
pp. 2017-2022 ◽  
Author(s):  
N.G. Alves ◽  
C.A.A. Torres ◽  
J.D. Guimarães ◽  
E.A. Moraes ◽  
P.B. Costa ◽  
...  
Keyword(s):  
Breeding Season ◽  
Progesterone Concentration ◽  
Plasma Progesterone

Pattern of plasma progesterone, oestradiol-17β, luteinizing hormone and androgen in non-pregnant buffalo (Bubalus bubalis)

1982 ◽  
Vol 100 (2) ◽  
pp. 279-284 ◽  
Author(s):  
R. C. Arora ◽  
R. S. Pandey
Keyword(s):  
Luteinizing Hormone ◽  
Peak Level ◽  
Systemic Circulation ◽  
Bubalus Bubalis ◽  
High Concentration ◽  
Plasma Progesterone ◽  
Blood Samples ◽  
Androgen Level ◽  
The Mean ◽  
Low Levels

Abstract. Domestic buffaloes were used to characterize the pattern of progesterone, oestradiol-17β, LH and androgen in the systemic circulation following infertile insemination. Concentrations of hormones were measured by RIA in blood samples collected daily or at alternate days following insemination. The concentration of progesterone was lowest on the day of insemination, and increased significantly to a peak level of 4.00 ± 0.60 ng/ml by day 13 post insemination. After day 17, it declined significantly (P < 0.01) to reach low levels by day 21. The concentration of oestradiol-17β was high at the time of insemination and declined significantly (P < 0.01) by day 2 after insemination. It was maintained around the basal level till day 18 with minor peaks in between this period. It again rose significantly (P < 0.01) at subsequent oestrus. The mean level of LH was highest at the time of insemination, and declined significantly (P < 0.01) by day 1 post insemination. It did not vary appreciably till the animal returned to oestrus. The oestrous value of LH and progesterone were negatively correlated (r = −0.77). The androgen level was observed to be high at insemination in 3 out of 5 animals, but the overall pattern of this steroid was inconsistent during the period studied. A high concentration of androgen was recorded in all the animals from day 2–5 before the onset of oestrus.

scholarly journals Short communication: Plasma progesterone concentration and ovarian dynamics of lactating Jersey cows treated with 1 or 2 intravaginal progesterone inserts

2016 ◽  
Vol 99 (3) ◽  
pp. 2353-2357
Author(s):  
João G.N. Moraes ◽  
Paula R.B. Silva ◽  
Nathália Bortoletto ◽  
Alexandre L.A. Scanavez ◽  
Ricardo C. Chebel
Keyword(s):  
Short Communication ◽  
Progesterone Concentration ◽  
Plasma Progesterone ◽  
Jersey Cows ◽  
Ovarian Dynamics

Method for monitoring plasma progesterone concentrations in pregnancy.

1976 ◽  
Vol 22 (4) ◽  
pp. 422-428 ◽  
Author(s):  
P Winkel ◽  
P Gaede ◽  
J Lyngbye
Keyword(s):  
Growth Rate ◽  
Time Series ◽  
Reference Material ◽  
Gestational Age ◽  
Predictive Power ◽  
Mean Value ◽  
Single Subject ◽  
Progesterone Concentration ◽  
Plasma Progesterone ◽  
In Pregnancy

Abstract We present a time-series model for monitoring concentrations in plasma of hormones produced in the placenta, progesterone being chosen as an example. The model, which is based on the assumption that variations in plasma progesterone concentration in pregnant subjects mainly reflect variations in the growth rate of the placenta, was applied to eight series of progesterone values measured during pregnancy in eight subjects. In the model, which was found to fit the data, it is assumed that progesterone concentration is proportional to the size of the placenta and that the growth rate of the placenta varies at random, with a mean value alpha. The variation of alpha was of the same magnitude among and within the subjects. If the average of many subjects alpha values is used, a single subject may be used as her own reference, based on only one previous observation. When two observations are available, an individual's own alpha value may be estimated and used for the prediction. The predictive power of the new method was found to be far superior to the conventional method in which a single sample reference material is used. Furthermore, one need not know the gestational age in order to use the method.

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