Activity of selected glycosidases and availability of their substrates in bovine placenta during pregnancy and parturition with and without retained foetal membranes

2020 ◽  
Vol 55 (9) ◽  
pp. 1093-1102
Author(s):  
Monika Jamioł ◽  
Jacek Wawrzykowski ◽  
Wioleta Mojsym ◽  
Martina Hoedemaker ◽  
Marta Kankofer
Keyword(s):  
Bovine Placenta ◽  
Foetal Membranes

scholarly journals The comparison of pro- and antioxidative parameters in plasma and placental tissues during early phase of placental development in cows

2021 ◽  
Author(s):  
Jacek Wawrzykowski ◽  
Monika Jamioł ◽  
Wioleta Mojsym ◽  
Marta Kankofer
Keyword(s):  
Blood Plasma ◽  
Antioxidative Enzymes ◽  
Placental Development ◽  
Blood Samples ◽  
Bovine Placenta ◽  
Total Antioxidant ◽  
Tissue Homogenates ◽  
Further Development ◽  
General Profile ◽  
In Blood Plasma

AbstractPhysiological balance between pro- and antioxidative processes is crucial for placentation and further development of fetus and placenta. Parameters of pro- and antioxidative profile may serve as markers of proper course of pregnancy. The aim of study was to assess whether the balance between pro- and antioxidative parameters during placentation phase in bovine placenta is maintained. Placental and blood samples were collected from healthy, HF, pregnant (2nd-3rd month) cows (n = 8) in slaughterhouse and in farm, respectively. Formylokinurenine and bityrosine content were measured spectrofluorimetrically in blood plasma and tissue homogenates while metabolites of lipid peroxidation, total antioxidant capacity, SH groups and activity of antioxidative enzymes (glutathione peroxidase and superoxide dismutase) were determined in examined tissues by spectrophotometry. Western blotting was used to confirm the presence of enzymatic proteins in placenta. Results: Local profile in tissues was more pronounced than general profile in blood plasma. Activities of antioxidative enzymes were significantly (p < 0.05) higher in 2nd compared to 3rd month of pregnancy in maternal part of placenta while prooxidant parameters showed opposite relationship. Obtained results showed significant differences when compared to data from non-pregnant animals or time of parturition. Further studies are necessary for elucidation of placentation phase in cows.

The Development of the Embryo and Membranes of the Humpback Whale, Megaptera nodosa (Bonnaterre)

1960 ◽  
Vol 11 (3) ◽  
pp. 365 ◽  
Author(s):  
CW Stump ◽  
JP Robins ◽  
ML Garde
Keyword(s):  
Umbilical Cord ◽  
Uterine Cavity ◽  
Distal Region ◽  
Yolk Sac ◽  
Consecutive Series ◽  
Chorionic Villi ◽  
Suspensory Ligament ◽  
Foetal Membranes ◽  
Uterine Fluid ◽  
Tubular Form

The material consists of 20 embryos (5-30 mm) and two foetuses (63 mm and 90 mm) collected at whaling stations on Moreton and Norfolk Islands (latitude 27� 11'S. and 29� 5' S. respectively) during late August, September, and early October in 1952-53-54 and 1956. The consecutive series permitted the study of membrane formation and organogenesis. Younger embryos are found in grooves between the folds of endometrium in a constant site in that uterine horn associated with the ovary containing the recent corpus luteum. Older embryos and the early foetus are adapted to lie freely in the uterine fluid, and are devoid of any mechanism for apposition or attachment to the endometrium. Variation in the sequence of the association of the components of the umbilical cord provides suspensory structures for the amnion and yolk sac, and for the embryo a bifid ligament, retained in the early foetus for attachment of the foetal membranes. In the younger foetus the allantoic duct drains the nephric secretion into the uterine cavity. In the older foetus chorionic villi are present. The bifid suspensory ligament forms the major part of the distal region of the umbilical cord. The allantoic duct is reunited with the allantoic sac. Amniogenesis is by folding. During the embryonic period the chorio-amniotic connection forms a suspensory ligament. The yolk sac, attached by a novel ligament to the amnion, is large and functional in the embryo. In the foetus vascular splanchnopleure is present in a tubular form. A rete system develops in the embryo.

Low Sensitivity to Oestrogens in Bovine Placenta at Term

1989 ◽  
Vol 36 (1-10) ◽  
pp. 236-240 ◽  
Author(s):  
H. Sauerwein ◽  
H. H. D. Meyer ◽  
E. Möstl
Keyword(s):  
Bovine Placenta ◽  
Low Sensitivity

Transcription of non-classic major histocompatibility complex (MHC) class I in the bovine placenta throughout gestation and after Brucella abortus infection

2015 ◽  
Vol 167 (3-4) ◽  
pp. 166-170
Author(s):  
Larissa Sarmento dos Santos ◽  
Juliana Pinto da Silva Mol ◽  
Auricélio Alves de Macedo ◽  
Ana Patrícia Carvalho Silva ◽  
Diego Luiz dos Santos Ribeiro ◽  
...  
Keyword(s):  
Major Histocompatibility Complex ◽  
Mhc Class I ◽  
Brucella Abortus ◽  
Class I ◽  
Major Histocompatibility ◽  
Bovine Placenta ◽  
Histocompatibility Complex

Immunohistochemical studies of the carbonic anhydrase isozymes in the bovine placenta

Placenta ◽  
1990 ◽  
Vol 11 (4) ◽  
pp. 329-336 ◽  
Author(s):  
Toshiho Nishita ◽  
Chikako Kinoshita ◽  
Miho Maegaki ◽  
Masao Asari
Keyword(s):  
Carbonic Anhydrase ◽  
Bovine Placenta ◽  
Immunohistochemical Studies

CONCENTRATIONS DE LA PROGESTERONE, DES OESTROGENES ET DU CORTISOL DANS LE PLASMA DES VACHES AYANT DONNE NAISSANCE A DES JUMEAUX OU AYANT EU DES RETENTIONS PLACENTAIRES

1979 ◽  
Vol 59 (3) ◽  
pp. 481-490 ◽  
Author(s):  
P. MATTON ◽  
V. ADELAKOUN ◽  
J. J. DUFOUR
Keyword(s):  
Plasma Concentration ◽  
Postpartum Period ◽  
Multiple Births ◽  
Control Group ◽  
Plasma Progesterone ◽  
Retained Placenta ◽  
Different Types ◽  
Foetal Membranes ◽  
Plasma Steroids ◽  
Peripartum Period

Plasma steroids (cortisol, progesterone, estrone and estradiol) were studied during the peripartum period in cows with three different types of parturition: unifoetal normal (VUN), unifoetal with retained placenta (VRP), multifoetal with or without retained placenta (VG). In the control group, cortisol rose gradually from 8 ng/ml on day −7 to 11 ng/ml on the day of parturition and thereafter came back to the level of day −7. In the VRP group, cortisol was slightly lower than in the control on day −7 and it did not vary significantly before or after parturition. In the group of cows with multiple births, where retained placenta was encountered in 3/4 cases, cortisol was much higher than in control animals. Plasma progesterone decreased gradually from 5.5 ng/ml to less than 1 ng/ml on the day of parturition in the control group. In the group VRP and VG, it was significantly higher than in the control on the 2 days before and on the day of parturition. The patterns of estrone and estradiol were similar in the groups VUN and VRP until the first day following parturition, but much higher in the cows giving birth to twins. During the postpartum period, the drop in estrogens was much slower in the VRP and VG groups than in the VUN control group. These results suggest that retention of the placenta is not linked with the plasma concentration of cortisol but rather associated with an increased level of progesterone on the day of parturition and that the slower decrease in estrogen levels after parturition would be the result of the persisting attachment of the foetal membranes.

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