Role of luteal biosynthesis of prostaglandin F2α on function and structure of the corpus luteum during luteolysis in heifers

Pinaffi, F.L.V.; Araujo, E.R.

doi:10.1016/j.domaniend.2017.10.007

Cited by 9 publications

(4 citation statements)

References 18 publications

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“…Whereas, in the PGML group, the peripheral blood flow intensified and radiated deep into the structure spreading over 80% of the luteal parenchyma (G-4), 2 h after administration of PG. The blood flow intensity reduced and restricted to the luteal periphery (G-2), 24 h post PG, in both the groups (Pinaffi et al 2018). By 48 h post PG, lysis of luteal structure was evident along with reduced blood flow intensity (G-1) in PGML group while the intensity was medium (G-2) with no signs of lysis in PGEL group.…”

mentioning

confidence: 91%

Luteal haemodynamics during spontaneous and induced luteolysis in crossbred cattle

SATHESHKUMAR¹,

SOUNDARAPANDIAN²

2022

Indian J of Anim Sci

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The haemodynamics of CL during natural and induced luteolysis was studied in crossbred cattle using colour Doppler ultrasonography. In natural cycle, penetration of Doppler signals deep into the CL was observed during Day 15 â€“ 17 coinciding with the initiation of luteolysis. When PG was administered in the early luteal phase (Day 4), there was an increase in blood flow intensity in the periphery of CL, but when PG was administered in the mid luteal phase (Day 10), the intensified Doppler signals penetrated deep into the luteal parenchyma within two hours. There were no significant differences in velocity parameters and RI values between the treatment groups. Thus it was concluded that the characteristic difference in the intensity and nature of vascular perfusion was the determining factor for the initiation of luteolytic process in cattle.

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mentioning

confidence: 91%

Luteal haemodynamics during spontaneous and induced luteolysis in crossbred cattle

SATHESHKUMAR¹,

SOUNDARAPANDIAN²

2022

Indian J of Anim Sci

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“…F. Pinaffi (2018) found an important role of gonadal hormones and cytokines in preparing the endometrium for implantation and activating the transformation of epithelial cells and stromal fibroblasts into decidual cells. The cytokines IL1, IL6 and TNFα are considered (Drillich & Wagener, 2018) as mediators of nonspecific inflammatory processes, but their activity is also physiologically enhanced during the early postpartum period with a high degree of mRNA expression of cytokines and acute phase proteins during the third week after delivery, regardless of the health status of the animals.…”

Section: Introductionmentioning

confidence: 99%

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2023

Scientific Horizons

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Свідоцтво про державну реєстрацію друкованого засобу масової інформації серії КВ № 24997-14937 ПР Науковий журнал включено до категорії А Переліку наукових фахових видань України, у яких можуть публікуватися результати дисертаційних робіт на здобуття наукових ступенів доктора та кандидата ветеринарних, економічних, сільськогосподарських і технічних наук зі спеціальностей: 051 -Економіка; 071 -Облік і оподаткування; 072 -Фінанси, банківська справа та страхування; 073 -Менеджмент; 075 -Маркетинг;

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Section: Introductionmentioning

confidence: 99%

Inflammatory and anti-inflammatory cytokines in the endometrium of cows during anaphrodisia and estrous cycle

Bondarenko,

Lazorenko,

Musiienko

et al. 2023

Scientific Horizons

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Infertility and sexual cycle disorders in cows are an urgent and widespread problem in cattle breeding, causing significant losses to farms. At the same time, a detailed understanding of the cellular and molecular mechanisms in the bovine uterus is crucial to explain and avoid infertility in dairy cows. The research aims to determine the concentration of tumour necrosis factor (TNFα), interleukin-1 (IL-1) and interlekin-4 (IL-4) in endometrial homogenates during oestrus, proestrus, corpus luteum and anaphrodisia caused by endometritis, as well as lactation. The research material was homogenates of cow endometrium taken from the horns of the uterus in its upper third. The methods used to determine the content of IL-1, IL-4 and TNFα in endometrial samples were enzyme-linked immunosorbent assay with a ratio (tissue homogenatephosphate-salt buffer). The results of the study revealed changes in the content of IL-4, IL-1 and TNF-α in the functional layer of the endometrium during anaphrodisia and certain stages of the oestrous cycle. A significant increase in the content of TNF-α and a decrease in the levels of IL-1 and IL-4 in the endometrium compared to the same indicator during oestrus were found. No significant difference in the level of IL-1 during proestrus compared to the corpus luteum was found, as a result of the extinction of the transient phlogogenic reaction inherent in the oestrous endometrium at this time, due to the cytokine balance, which prepares the best conditions for zygote implantation. It was found that the level of IL-1 during oestrus significantly increases relative to the corpus luteum and proestrus stages. It was determined that the concentration of IL-4 in the functional layer of the endometrium of cows suffering from afterbirth retention and endometritis is lower than the same indicator during oestrus, which confirms the inhibition of cell proliferation and differentiation. The data obtained can be used to optimise the correction of sexual cycling in cows with anaphrodisia

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Role of luteal biosynthesis of prostaglandin F2α on function and structure of the corpus luteum during luteolysis in heifers

Cited by 9 publications

References 18 publications

Luteal haemodynamics during spontaneous and induced luteolysis in crossbred cattle

Luteal haemodynamics during spontaneous and induced luteolysis in crossbred cattle

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Inflammatory and anti-inflammatory cytokines in the endometrium of cows during anaphrodisia and estrous cycle

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