Results 51 to 60 of about 197,321 (245)

Pulsed administration for physiological estrogen replacement in mice [version 1; peer review: 2 approved]

open access: yesF1000Research, 2021
Estrogens are important regulators of body physiology and have major effects on metabolism, bone, the immune- and central nervous systems. The specific mechanisms underlying the effects of estrogens on various cells, tissues and organs are unclear and ...
Carmen Corciulo   +9 more
doaj   +1 more source

Exogenous estradiol enhances apoptosis in regressing post-partum rat corpora lutea possibly mediated by prolactin

open access: yesReproductive Biology and Endocrinology, 2005
Background In pregnant rats, structural luteal regression takes place after parturition and is associated with cell death by apoptosis. We have recently shown that the hormonal environment is responsible for the fate of the corpora lutea (CL).
Telleria Carlos M, Goyeneche Alicia A
doaj   +1 more source

OVULATION SYNCHRONIZATION PROTOCOLS AND FACTORS ASSOCIATED WITH PREGNANCY RATE OF ZEBU FEMALES

open access: yesTropical and Subtropical Agroecosystems, 2021
Background. Fixed time artificial insemination is an important tool for the reproductive management of cattle. Objective. To determine the effect of two ovulation synchronization protocols and factors associated with the pregnancy rate of Zebu females ...
Jorge Alonso Peralta-Torres   +2 more
doaj   +1 more source

Improvement of Menopausal Symptoms by <i>Beta vulgaris</i>, <i>Artemisia princeps</i>, and <i>Eleutherococcus senticosus</i> via Estrogen Pathway Activation in MCF-7 Cells and OVX Mice. [PDF]

open access: yesFood Sci Nutr
Plant extracts from Beta vulgaris (BK‐R) and Artemisia princeps (BK‐A) act as full estrogen‐mimetics, activating both ERα genomic and non‐genomic signaling in MCF‐7 cells and OVX mice. Across in vivo assays, BK‐R/BK‐A restored uterine structure, improved estrous cycling, preserved trabecular bone, and normalized serum E2/osteocalcin, approximating ...
Lee TB   +7 more
europepmc   +2 more sources

Estrous behavior in dairy cows: identification of underlying mechanisms and gene functions [PDF]

open access: yes, 2010
Selection in dairy cattle for a higher milk yield has coincided with declined fertility. One of the factors is reduced expression of estrous behavior. Changes in systems that regulate the estrous behavior could be manifested by altered gene expression ...
Beerda, B.   +3 more
core   +2 more sources

Oestrogen, an evolutionary conserved regulator of T cell differentiation and immune tolerance in jawed vertebrates? [PDF]

open access: yes, 2018
In teleosts, as in mammals, the immune system is tightly regulated by sexual steroid hormones, such as oestrogens. We investigated the effects of 17β-oestradiol on the expression of several genes related to T cell development and resulting T cell ...
Duflot, Aurélie   +5 more
core   +3 more sources

Influence of Ionophore Supplementation on Growth Performance, Dietary Energetics and Carcass Characteristics in Finishing Cattle during Period of Heat Stress. [PDF]

open access: yes, 2013
Forty-eight crossbred heifers (378.1±18 kg) were used in a 56-d feeding trial (four pens per treatment in a randomised complete block design) to evaluate the influence of ionophore supplementation on growth performance, dietary energetics and carcass ...
Barreras, A   +9 more
core   +2 more sources

Morphological aspects of the squamocolumnar junction of rats in permanent estrus treated with an association of estrogen and glucocorticoid [PDF]

open access: yes, 2004
PURPOSE: to evaluate the effects of estradiol benzoate associated with dexamethasone on the squamocolumnar junction (SCJ) of rats in permanent estrus (PE) and then ovariectomized (Ovx).
Baracat, Edmund Chada   +4 more
core   +3 more sources

Influence of Estradiol Benzoate on Fat Storage.

open access: yesExperimental Biology and Medicine, 1942
In a recent study Loeb and Burr1 showed that female rats store more body fat than males when maintained on a diet rich in saturated fat (hydrogenated coconut oil) but devoid of essential fatty acids. It then became a matter of interest to ascertain whether this finding could be attributed to the effect of estrogen on fat metabolism.
H. G. Loeb, G. O. Burr
openaire   +1 more source

Detectability of testosterone esters and estradiol benzoate in bovine hair and plasma following pour-on treatment

open access: yesAnalytical and Bioanalytical Chemistry, 2009
The abuse of synthetic esters of natural steroids such as testosterone and estradiol in cattle fattening and sports is hard to detect via routine urine testing. The esters are rapidly hydrolysed in vivo into substances which are also endogenously present
A. Stolker   +8 more
semanticscholar   +1 more source

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