abstract introduction: omega 3 fatty acid especially in the form of fish oil, has structural and biological role in the body's various systems especially nervous system. numerous studies have tried to research about it. auditory is one of the affected systems. omega 3 deficiency can have devastating effects on the nervous system and auditory. this study aimed to evaluate neural conduction ...

the present study investigated serum cortisol in response to postpartum ovarian resumption and luteal function. postpartum ovarian resumption was detected based on a rise in progesterone (p4) concentrations during three weeks after calving. twenty two holstein cows in a semi-closed dairy farm in qena city, egypt were used. the study was carried out from late march to early june; the period char...

Fifty repeat breeder (RB) Friesian cows were allocated to five groups of 10 cows each, to determine the effect of progesterone (P4) supplement on P4 concentrations and pregnancy rates during the periods of corpus luteum (CL) formation and development between days 2-7 and 7-12 following a spontaneous or PGF2α-induced estrus. Cows were artificially inseminated during PGF2α-induced (PGF-P4-d2 and ...

A P4 is a set of four vertices of a graph that induces a chordless path; the P4-structure of a graph is the set of all P4’s. Vašek Chvátal asked if there is a polynomial time algorithm to determine whether an arbitrary four-uniform hypergraph is the P4-structure of some graph. The answer is yes; we present such an algorithm.

In cattle, elevated concentrations of circulating progesterone (P4) in the immediate postconception period are associated with advanced conceptus development, while low P4 is implicated as a causative factor in low pregnancy rates observed in dairy cows. This study aimed to: 1) describe the transcriptional changes that occur in the bovine endometrium during the estrous cycle, 2) determine how e...

Calcium-related proteins include the calcium transporters 1 and 2 (CaT1 and CaT2), plasma membrane Ca2+-ATPase 1b (PMCA1b), and calbindin-D9k and -D28k. The expression of CaT1 and PMCA1b and their potential roles in the uterine tissue remain to be clarified. Thus, in the present study, the expression patterns of CaT1 and PMCA1b were examined to predict their roles in rat uterus during the estro...

Progesterone (P4) was demonstrated to inhibit migration in vascular smooth muscle cells (VSMCs), but to enhance migration in T47D breast cancer cells. To investigate the mechanism responsible for this switch in P4 action, we examined the signaling pathway responsible for the P4-induced migration enhancement in breast cancer cell lines, T47D and MCF-7. Here, we demonstrated that P4 activated the...

To investigate the correlation between ovarian structures and progesterone (P4) concentrations in Egyptian buffaloes (n=80), blood and milk samples were in association with gynecological examination. There was a positive correlation (r=0.38, P<0.005) between serum and milk P4 levels and the presence of CL resulted in an elevation of P4 (P<0.0001) as compared with smooth inactive ovary. The high...

Transcription from the late promoter, PA3, of Bacillus subtilis phage phi 29 is activated by the viral regulatory protein p4. A kinetic analysis of the activation process has revealed that the role of protein p4 is to stabilize the binding of RNA polymerase to the promoter as a closed complex without significantly affecting further steps of the initiation process. Electrophoretic band-shift ass...