Effect of fetal number on the concentrations of circulating maternal serum progesterone and estradiol of does during late pregnancy

Manalu, Wasmen; Sumaryadi, Mas Yedi; Kusumorini, Nastiti

doi:10.1016/s0921-4488(96)00921-2

Cited by 22 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(2003) have reported that corpora lutea of sheep formed after multiple ovulations produce more P than CL formed after one ovulation and also reported that there is a positive correlation between total volume of CL and P concentration in cyclic and pregnant sheep. In addition, Manalu et al. (1996) have alleged that increased number of corpora lutea contributes more P secretion in pregnant sheep and goats bearing more than one foetus.…”

Section: Discussionmentioning

confidence: 99%

“…Kaulfuss et al (2003) have reported that corpora lutea of sheep formed after multiple ovulations produce more P than CL formed after one ovulation and also reported that there is a positive correlation between total volume of CL and P concentration in cyclic and pregnant sheep. In addition, Manalu et al (1996) have alleged that increased number of corpora lutea contributes more P secretion in pregnant sheep and goats bearing more than one foetus. In this study, a significant positive correlation was found between foetal number (0, 1, 2) and diameter of CL, maternal P concentration, and between diameter of CL and P. The enlargement in diameter of CL in pregnant ewes versus non-pregnant ewes may be explained by increase in luteal cell volume to provide more P production to maintain pregnancy at least during early pregnancy.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Pregnancy and Foetal Number on Diameter of Corpus Luteum, Maternal Progesterone Concentration and Oxidant/Antioxidant Balance in Ewes

Gür

Türk

Demirci

et al. 2011

Reprod Domestic Animals

View full text Add to dashboard Cite

The aim of this study was to determine the changes in diameter of corpus luteum (CL), maternal progesterone (P) concentration, lipid peroxidation and non-enzymatic antioxidant levels along with enzymatic antioxidant activities in pregnant ewes bearing single and twin foetuses. The ewes were selected from healthy animals that were brought to the abattoir for slaughtering. The ewes were divided into three groups: Group 1 (non-pregnant, non-oestrous, n = 30), Group 2 (pregnant bearing a single foetus, n = 30) and Group 3 (pregnant bearing twin foetuses, n = 12) after they were slaughtered. Pregnant ewes were in the first half of the pregnancy. The diameter of CL and P concentration of pregnant ewes bearing a single foetus or twin foetuses were found higher than that found in non-pregnant ewes. Similarly, the P concentration of pregnant ewes bearing twin foetuses was higher than that found in pregnant ewes bearing a single foetus. Malondialdehyde (MDA) level in pregnant ewes bearing twin foetuses was higher than that found in both non-pregnant and pregnant ewes bearing a single foetus. The serum glutathione (GSH) level and glutathione-peroxidase (GSH-Px) activity of pregnant ewes bearing twin foetuses were found lower than that found in non-pregnant ewes. Additionally, the GSH-Px activity of pregnant ewes bearing twin foetuses was found lower than that found in pregnant ewes bearing a single foetus. No significant difference was found between pregnant ewes bearing female and male foetus with respect to diameter of CL, P concentration and oxidative stress parameters. There were significant positive correlations between foetal number (0, 1, 2) and diameter of CL, P concentration, MDA level, and between P concentration and diameter of CL, MDA level. However, significant negative correlations were found between foetal number (0, 1, 2) and GSH level, GSH-Px activity, and between P concentration and GSH-Px activity. In conclusion, the diameter of CL enlarges, P production increases and oxidant/antioxidant balance impairs because of the gestation stress in ewes during pregnancy.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of Pregnancy and Foetal Number on Diameter of Corpus Luteum, Maternal Progesterone Concentration and Oxidant/Antioxidant Balance in Ewes

Gür

Türk

Demirci

et al. 2011

Reprod Domestic Animals

View full text Add to dashboard Cite

show abstract

“…O comportamento da concentração de estradiol neste experimento foi semelhante àquele descrito por Manalu et al (1996) e diferiu de Prina (2007) que observou maiores valores dois dias antes do parto. Houve diferença significativa (P<0,05) na concentração de progesterona sendo observada diminuição no momento do parto.…”

Section: (M8) Dias Antes Do Parto No Dia Do Parto (M9) (M10) E 7 (Munclassified

Leucograma e metabolismo oxidativo de neutrófilos em cabras da raça Saanen nos períodos de gestação, parto e pós-parto

et al. 2013

View full text Add to dashboard Cite

RESUMO.-O presente estudo teve como objetivo a avaliação do leucograma e do metabolismo oxidativo de neutrófilos em fêmeas caprinas da raça Saanen, nos períodos The purpose of this study was to evaluate the leukocyte count and the oxidative metabolism of neutrophil in Saanen goats during periods of pregnancy, parturition and postpartum. Were used 20 Saanen goats, clinically healthy and serologically negative for caprine arthritis encephalitis virus (CAEV). Blood samples were collected by jugular venipuncture 49 (M1), 42 (M2), 35 (M3), 28 (M4), 21 (M5), 14 (M6), seven (M7), three (M8) days before the parturition, on the day of birth (M9), three (M10) and seven (M11) days postpartum, for the leukocyte count, and serum for cortisol, estradiol and progesterone determination. From 28 days (M4) before parturition until seven days postpartum (M11) blood samples were collected for evaluation of oxidative metabolism of neutrophils by the nitroblue tetrazolium reduction test (NBT). The results showed that at parturition day there were an increase in cortisol and estradiol levels and a decrease in progesterone serum, neutrophilic leukocytosis and left shift slight, decrease of lymphocytes, increase in the neutrophil: lymphocyte, eosinopenia, monocytosis and basophilia. There was a neutrophilic leukocytosis and an increase in the neutrophil: lymphocyte on the seventh day postpartum. There were not significant alterations in oxidative metabolism of neutrophils during pregnancy, parturition and postpartum. It was concluded that parturition causes an elevation in cortisol and estradiol levels and a decrease in progesterone serum determining a neutrophilic leukocytosis and left shift slight, with a reduction of lymphocytes, increase in the neutrophil:lymphocyte, eosinopenia, monocytosis and basophilia. Neutrophilic leukocytosis, increase in the neutrophil: lymphocyte and fibrinogen are detected on the seventh day postpartum. Pregnancy, parturition and the postpartum do not change the oxidative metabolism of neutrophils evaluated by NBT reduction test. de gestação, parto e pós-parto. Amostras de sangue foram colhidas de 20 fêmeas nulíparas da raça Saanen, clinicamente sadias por venipunção jugular aos 49 (M1), 42 (M2),

show abstract

“…Progesterone concentration was continuously increased, possibly due to the more mature corpus luteum that was produced by fertilization. An increase in progesterone concentration in this phase is needed to help the process of implantation of the embryo in the uterine wall and fetal maintenance during the pregnancy [19,20,21].…”

Section: Resultsmentioning

confidence: 99%

Comparison of Estrous Performance and Progesterone Level of Kacang Goats Induced by PGF2α Versus Ovsynch Protocol

et al. 2020

View full text Add to dashboard Cite

This study aimed to compare estrous performance and progesterone concentration during the estrous cycle of kacang goats induced by PGF2α versus ovsynch protocol. This research used six female kacang goats. The goats were divided into two groups namely the K1 group which was induced by injecting 7.5 mg PGF2α intramuscularly in 10 days interval and K2 group which was induced by using the ovsynch method. Protocol for K2 group was as follow; at day 1, the goats were injected with 7.5 mg PGF2α; at day 8, they were injected with 50 µg GnRH; at day 15 they were injected with 7.5 mg PGF2α; at day 18 they were injected with 50 µg GnRH. Estrous were detected using male goat and visual observation. The blood samples were taken on days 7, 14, and 21 after estrous. Progesterone concentration was measured with enzyme-linked immunosorbent assay (ELISA) technique. Intensity, onset, and duration of estrous in K1 group versus K2 group were 8.33±2.08 vs 7.00±1.00; 56.00±34.12 vs 36.00±20.78 hours; and 24.00±26.15 vs 24.00±20.78 hours, respectively (p>0.05). Level of progesterone hormone on day 7, 14, and 21 for K1 vs K2 were 0.812±0.710 vs 2.369±3.351; 5.051±7.754 vs 3.091±4.385 ng/ml; and 4.173±6.692 vs 3.562±4.113 ng/mL, respectively (p>0,05). It can be concluded that the differences in synchronization protocols between PGF2α versus ovsynch do not affect the performance of estrous and the concentration of progesterone during the estrous cycle of kacang goats.

show abstract

Effect of fetal number on the concentrations of circulating maternal serum progesterone and estradiol of does during late pregnancy

Cited by 22 publications

References 12 publications

Effect of Pregnancy and Foetal Number on Diameter of Corpus Luteum, Maternal Progesterone Concentration and Oxidant/Antioxidant Balance in Ewes

Effect of Pregnancy and Foetal Number on Diameter of Corpus Luteum, Maternal Progesterone Concentration and Oxidant/Antioxidant Balance in Ewes

Leucograma e metabolismo oxidativo de neutrófilos em cabras da raça Saanen nos períodos de gestação, parto e pós-parto

Comparison of Estrous Performance and Progesterone Level of Kacang Goats Induced by PGF2α Versus Ovsynch Protocol

Contact Info

Product

Resources

About