Effects of the formation and regression of accessory corpus lutea during pregnancy on plasma progesterone concentration and pregnancy status in cross-bred beef heifers

2021 ◽  
pp. 106825
Author(s):  
Ken Hazano ◽  
Takafumi Miki ◽  
Akira Goto ◽  
Mitsunori Kayano ◽  
Shingo Haneda ◽  
...  
Keyword(s):  
Progesterone Concentration ◽  
Beef Heifers ◽  
Plasma Progesterone ◽  
Pregnancy Status

Plasma progesterone concentration in beef heifers receiving exogenous glucose, insulin, or bovine somatotropin1

2012 ◽  
Vol 90 (9) ◽  
pp. 3266-3273 ◽  
Author(s):  
R. F. Cooke ◽  
B. I. Cappellozza ◽  
M. M. Reis ◽  
D. W. Bohnert ◽  
J. L. M. Vasconcelos
Keyword(s):  
Progesterone Concentration ◽  
Beef Heifers ◽  
Plasma Progesterone ◽  
Exogenous Glucose

scholarly journals Low blood ISG15 mRNA and progesterone levels are predictive of non-pregnant dairy cows

2006 ◽  
Vol 191 (2) ◽  
pp. 505-512 ◽  
Author(s):  
Hyungchul Han ◽  
Kathleen J Austin ◽  
Lea A Rempel ◽  
Thomas R Hansen
Keyword(s):  
Blood Cell ◽  
Dairy Cows ◽  
Pregnancy Rate ◽  
Artificial Insemination ◽  
Transrectal Ultrasound ◽  
Mrna Levels ◽  
Progesterone Concentration ◽  
Plasma Progesterone ◽  
Pregnancy Status ◽  
Accurate Indicator

ISG15 is induced by conceptus-derived interferon-τ in the endometrium on days 15–45 of pregnancy. It was hypothesized that pregnancy induces blood cell ISG15 gene expression and that low blood ISG15 mRNA levels provide an indication of non-pregnant cows on day 18. Blood was collected either on day 18 (n = 78) or on days 15–21, 25, and 32 (n = 21; serial collection) from dairy cows following artificial insemination (AI). Plasma progesterone concentration was determined using RIA. ISG15 mRNA levels were determined using real-time PCR. Pregnancy was diagnosed on day 32 using transrectal ultrasound. ISG15 mRNA levels increased after day 16, peaked at day 20 and then declined to day 16 levels by 32 days following AI. The average pregnancy rate was 43% based on blood cell ISG15 mRNA. The average pregnancy rate was 33% based on the transrectal ultrasound. Lower levels of ISG15 mRNA or progesterone during serial collections were 100% accurate in predicting non-pregnant cows based on day 32 transrectal ultrasound. However, detection of ISG15 mRNA yielded 78% accuracy in predicting pregnant cows, while progesterone yielded 58% accuracy. Average plasma progesterone based on pregnancy status according to ultrasound was consistently higher in pregnant (> 4 ng/ml) when compared with non-pregnant cows from days 15 to 32, except on day 16. It is concluded that detection of low blood ISG15 mRNA levels during serial collection from days 17 to 25 serves as an accurate indicator of cows that are not pregnant, thus allowing re-synchronization and insemination.

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

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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