scholarly journals Metabolomic Profile of Oviductal Extracellular Vesicles across the Estrous Cycle in Cattle

2019 ◽  
Vol 20 (24) ◽  
pp. 6339 ◽  
Author(s):  
Julie Gatien ◽  
Pascal Mermillod ◽  
Guillaume Tsikis ◽  
Ophélie Bernardi ◽  
Sarah Janati Idrissi ◽  
...  
Keyword(s):  
Estrous Cycle ◽  
Extracellular Vesicles ◽  
Luteal Phase ◽  
Early Embryo ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Metabolomic Profiling ◽  
Late Luteal Phase

Oviductal extracellular vesicles (oEVs) have been proposed as key modulators of gamete/embryo maternal interactions. The aim of this study was to examine the metabolite content of oEVs and its regulation across the estrous cycle in cattle. Oviductal EVs were isolated from bovine oviducts ipsilateral and contralateral to ovulation at four stages of the estrous cycle (post-ovulatory stage, early and late luteal phases, and pre-ovulatory stage). The metabolomic profiling of EVs was performed by proton nuclear magnetic resonance spectroscopy (NMR). NMR identified 22 metabolites in oEVs, among which 15 were quantified. Lactate, myoinositol, and glycine were the most abundant metabolites throughout the estrous cycle. The side relative to ovulation had no effect on the oEVs’ metabolite concentrations. However, levels of glucose-1-phosphate and maltose were greatly affected by the cycle stage, showing up to 100-fold higher levels at the luteal phase than at the peri-ovulatory phases. In contrast, levels of methionine were significantly higher at peri-ovulatory phases than at the late-luteal phase. Quantitative enrichment analyses of oEV-metabolites across the cycle evidenced several significantly regulated metabolic pathways related to sucrose, glucose, and lactose metabolism. This study provides the first metabolomic characterization of oEVs, increasing our understanding of the potential role of oEVs in promoting fertilization and early embryo development.

scholarly journals Changes in Aquaporin 1, 5 and 9 Gene Expression in the Porcine Oviduct According to Estrous Cycle and Early Pregnancy

2020 ◽  
Vol 21 (8) ◽  
pp. 2777
Author(s):  
Damian Tanski ◽  
Agnieszka Skowronska ◽  
Maciej Eliszewski ◽  
Leszek Gromadzinski ◽  
Bartosz Kempisty ◽  
...  
Keyword(s):  
Gene Expression ◽  
Estrous Cycle ◽  
Luteal Phase ◽  
Integral Membrane Proteins ◽  
Early Cleavage ◽  
Fluid Homeostasis ◽  
Late Luteal Phase ◽  
First Time ◽  
Oviductal Fluid

Aquaporins (AQPs) are a group of small, integral membrane proteins which play an important role in fluid homeostasis in the reproductive system. In our previous study, we demonstrated AQP1, 5 and 9 protein expression and localization in the porcine oviduct. The presence of these isoforms could suggest their role in the transport of the ovum to the uterus by influencing the epithelial cells’ production of oviductal fluid. The aim of this study was to evaluate the expression of AQP1, AQP5 and AQP9 in the infundibulum, ampulla and isthmus in the porcine oviduct during the estrous cycle (early luteal phase, days 2–4, medium luteal phase, days 10–12, late luteal phase days 14–16, follicular phase days 18–20) and pregnancy (period before implantation, days 14–16 and after the implantation, days 30–32) using the Real-Time PCR technique. As clearly demonstrated for the first time, AQP1, 5, and 9 gene expression is influenced by the estrus cycle and pregnancy. Furthermore, expression of AQPs in the porcine oviduct may provide the physiological medium that sustains and enhances fertilization and early cleavage-stage embryonic development. Overall, our study provides a characterization of oviduct AQPs, increasing our understanding of fluid homeostasis in the porcine oviduct to successfully establish and maintain pregnancy.

scholarly journals Is interleukin-1α a luteotrophic or luteolytic agent in cattle?

Reproduction ◽  
2010 ◽  
Vol 139 (3) ◽  
pp. 665-672 ◽  
Author(s):  
Magdalena Majewska ◽  
Izabela Woclawek-Potocka ◽  
Mamadou M Bah ◽  
Joanna Hapunik ◽  
Katarzyna K Piotrowska ◽  
...  
Keyword(s):  
Estrous Cycle ◽  
Early Pregnancy ◽  
Luteal Phase ◽  
Late Luteal Phase ◽  
Interleukin 1Α ◽  
And Function ◽  
Different Doses

Cytokines are thought to regulate prostaglandin (PG) secretion in the bovine endometrium. However, there is no consensus about the role of interleukin-1α (IL1A) on PG secretion. The objective of this study was to examine the influence of IL1A on basal and interferon-τ (IFNT)-regulated PGin vitrosecretion, as well its effects on PG secretion, progesterone (P4) output, and corpus luteum (CL)in vivolifespan. Explants of bovine endometrium (days 16–17 of the estrous cycle or early pregnancy) were stimulated with IL1A (10 ng/ml), IFNT (30 ng/ml), or IL1A combined with IFN. IL1A alone strongly stimulated luteotrophic PGE2secretion by endometrial tissues of both pregnant and nonpregnant cows. IL1A also stimulated luteolytic PGF2αoutput in the late luteal phase. IFNT augmented the stimulatory effect of IL1A on PGE2secretion. In anin vivoexperiment, saline or IL1A at different doses (0.001–10 μg/per animal) was applied to the uterine lumen on day 16 of the cycle. Only the highest dose of IL1A caused a temporal increase in PGF2αsecretion, while it had no effect on P4secretion or CL lifespan. Application of 0.1 and 1 μg IL1A stimulated P4and PGE2output and prolonged the CL lifespan. Although IL1A may stimulatein vitroluteolytic PGF2αsecretion during the estrous cycle, it only acts as a luteotrophic factorin vivo. IL1A increased luteotrophic PGE2and P4output, inhibiting spontaneous luteolysis. These luteotrophic effects may result in appropriate luteal development and function in cows during the estrous cycle and early pregnancy.

Altered Serotonergic Activity in Women with Dysphoric Premenstrual Syndromes

1993 ◽  
Vol 23 (1) ◽  
pp. 1-27 ◽  
Author(s):  
Uriel Halbreich ◽  
Henry Tworek
Keyword(s):  
Treatment Outcome ◽  
Menstrual Cycle ◽  
Luteal Phase ◽  
Symptomatic Treatment ◽  
Gonadal Hormones ◽  
Interactive System ◽  
Library Search ◽  
Serotonergic Activity ◽  
Late Luteal Phase

Objective: Dysphoric Premenstrual Syndromes (PMS) are quite prevalent and in some women they are severe enough to warrant treatment. Their pathophysiology is still unknown, despite increased interest and research. Here we review the possible role of serotonin in the multidimensional interactive pathophysiology of PMS. Method: Over 170 articles are reviewed. An extensive library search has been conducted and articles are included because of their relevance to: 1) the phenomenology of PMS; 2) the putative association of serotonergic (5-HT) activity with syndromes that occur premenstrually; 3) changes in 5-HT activity along the menstrual cycle, especially the late luteal phase; 4) influence of gonadal hormones on serotonergic functions; 5) endocrine strategies for assessment of 5-HT abnormalities; and 6) treatment studies of PMS with serotonergic agonists. Results and Conclusions: The data presented here suggest that post-synaptic serotonergic responsivity might be altered during the late-luteal-premenstrual phase of the menstrual cycle. Some serotonergic functions of women with PMS might be altered during the entire cycle and be associated with a vulnerability trait. It is hypothesized that gonadal hormones might cause changes in levels of activity of 5-HT systems as part of a multidimensional interactive system. Strategies to evaluate 5-HT activities in the context of the menstrual cycle are discussed—leading to the conclusion that the most promising approach is active stimulation with specific post-synaptic serotonin agonists. Treatment outcome studies of some imperfect compounds that are currently applied as a symptomatic treatment of PMS support the notion that 5-HT is involved in the pathophysiology of these syndromes.

scholarly journals ISOLATION OF 2-CHLOROBENZIMIDAZOLE FROM MELIA DUBIA LEAF EXTRACT AND ITS STRUCTURAL CHARACTERISATION

2017 ◽  
Vol 9 (10) ◽  
pp. 67 ◽  
Author(s):  
G. Dayana Jeyaleela ◽  
S. Irudaya Monisha ◽  
J. Rosaline Vimala ◽  
A. Anitha Immaculate
Keyword(s):  
Mass Spectrometry ◽  
1H Nmr ◽  
Research Work ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Ft Ir ◽  
Uv Visible ◽  
Isolated Compound ◽  
Promising Source

Objective: Natural products from medicinal plants, either as isolated compounds or as standardized plant extracts exhibit promising source of medicinal activity against various diseases. The aim of the present work was to make an attempt of isolation of bioactive principle and characterization of the isolated compound, from the medicinal plant Melia dubaiMethods: The extraction was done by a cold percolation method and the compound was separated and isolated by chromatography technique such as a thin layer chromatography (TLC), column chromatography and high-performance liquid chromatography (HPLC). The isolated compound was crystallized and the structural characterization of the isolated compound was made using UV-Visible, FT-IR, 1H-NMR, GC-MS and MS techniques which confirmed the structure of the isolated compound.Results: The separated and isolated compound was characterized by both physical and spectral methods like Ultraviolet-Visible spectroscopy (UV-Visible), Fourier transform infrared spectroscopy (FT-IR), Proton Nuclear Magnetic Resonance Spectroscopy (1H-NMR), Gas chromatography-mass spectrometry (GC-MS), and Mass spectrometry(MS). Based on the studies, organizational characteristics of one bioactive principle were deciphered. The results revealed that the isolated species is 2-chlorobenzimidazole and it agreed well with the reported value and spectra for 2-chlorobenzimidazole.Conclusion: The above results obtained in this research work clearly indicated the promising occurrence of 2-chlorobenzimidazole in Media dubia plant leaves. The future scope of these studies may guide us to view the biological activity of the isolated compound.

scholarly journals Genetic analysis of the Arabidopsis TIR1/AFB auxin receptors reveals both overlapping and specialized functions

eLife ◽  
2020 ◽  
Vol 9 ◽  
Author(s):  
Michael J Prigge ◽  
Matthieu Platre ◽  
Nikita Kadakia ◽  
Yi Zhang ◽  
Kathleen Greenham ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Early Embryo ◽  
Wild Type ◽  
The Family ◽  
Dependent Inhibition ◽  
Root Gravitropism ◽  
Specialized Function ◽  
Mutant Lines

The TIR1/AFB auxin co-receptors mediate diverse responses to the plant hormone auxin. The Arabidopsis genome encodes six TIR1/AFB proteins representing three of the four clades that were established prior to angiosperm radiation. To determine the role of these proteins in plant development we performed an extensive genetic analysis involving the generation and characterization of all possible multiply-mutant lines. We find that loss of all six TIR1/AFB proteins results in early embryo defects and eventually seed abortion, and yet a single wild-type allele of TIR1 or AFB2 is sufficient to support growth throughout development. Our analysis reveals extensive functional overlap between even the most distantly related TIR1/AFB genes except for AFB1. Surprisingly, AFB1 has a specialized function in rapid auxin-dependent inhibition of root growth and early phase of root gravitropism. This activity may be related to a difference in subcellular localization compared to the other members of the family.

scholarly journals The Biological Function of Extracellular Vesicles during Fertilization, Early Embryo—Maternal Crosstalk and Their Involvement in Reproduction: Review and Overview

Biomolecules ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1510
Author(s):  
Emanuele Capra ◽  
Anna Lange-Consiglio
Keyword(s):  
Extracellular Vesicles ◽  
Spatial Interaction ◽  
Cell Communication ◽  
Early Embryo ◽  
Molecular Profile ◽  
Cell Of Origin ◽  
Non Invasive ◽  
Temporal And Spatial ◽  
Mediate Cell

Secretory extracellular vesicles (EVs) are membrane-enclosed microparticles that mediate cell to cell communication in proximity to, or distant from, the cell of origin. Cells release a heterogeneous spectrum of EVs depending on their physiologic and metabolic state. Extracellular vesicles are generally classified as either exosomes or microvesicles depending on their size and biogenesis. Extracellular vesicles mediate temporal and spatial interaction during many events in sexual reproduction and supporting embryo-maternal dialogue. Although many omic technologies provide detailed understanding of the molecular cargo of EVs, the difficulty in obtaining populations of homogeneous EVs makes difficult to interpret the molecular profile of the molecules derived from a miscellaneous EV population. Notwithstanding, molecular characterization of EVs isolated in physiological and pathological conditions may increase our understanding of reproductive and obstetric diseases and assist the search for potential non-invasive biomarkers. Moreover, a more precise vision of the cocktail of biomolecules inside the EVs mediating communication between the embryo and mother could provide new insights to optimize the therapeutic action and safety of EV use.

scholarly journals Protocols for Isolating and Characterizing Polysaccharides From 1 Plant Cell Walls: A Case Study Using Rhamnogalacturonan-II

2021 ◽  
Author(s):  
Breeanna Urbanowicz ◽  
William Barnes ◽  
Sabina Koj ◽  
Ian Black ◽  
Stephanie Archer-Hartmann ◽  
...  
Keyword(s):  
Cell Wall ◽  
Plant Cell ◽  
Size Exclusion ◽  
Proton Nuclear Magnetic Resonance ◽  
Wall Material ◽  
Resonance Spectroscopy ◽  
Cell Wall Polysaccharide ◽  
Pectic Polysaccharide ◽  
Rhamnogalacturonan Ii

Abstract Background: In plants, there is a large diversity of polysaccharides that comprise the cell wall. Each major type of plant cell wall polysaccharide, including cellulose, hemicellulose, and pectin, has distinct structures and functions that contribute to wall mechanics and influence plant morphogenesis. In recent years, pectin modification and valorization has attracted much attention due to its expanding roles of pectin in biomass deconstruction, food science, material science, and environmental remediation. However, pectin utilization has been limited by our incomplete knowledge of pectin structure. Herein, we present a workflow of principles relevant for the characterization of polysaccharide primary structure using nature’s most complex polysaccharide, rhamnogalacturonan-II (RG-II), as a model.Results: We outline how to isolate RG-II from celery and duckweed cell wall material and red wine using chemical or enzymatic treatments coupled with size-exclusion chromatography. From there, we demonstrate the use of mass spectrometry (MS)-based techniques to determine the glycosyl residue and linkage compositions of the intact RG II molecule and RG-II-derived oligosaccharides including special considerations for labile monosaccharides. In doing so, we demonstrated that in the duckweed Wolffiella repanda the arabinopyranosyl (Arap) residue of side chain B is substituted at O-2 with rhamnose. As RG-II is further modified by non-glycosyl modifications including methyl-ethers, methyl-esters, and acetyl-esters, we then describe ways to use electrospray-MS to identify these moieties on RG-II-derived oligosaccharides. We then explored the utility of proton nuclear magnetic resonance spectroscopy (1H-NMR) in identifying RG-II-specific sugars and non-glycosyl modifications to complement and extend MS-based approaches. Finally, we describe how to assess the factors that affect RG-35 II dimerization using liquid chromatographic and NMR spectroscopic approaches.Conclusions: The complexity of pectic polysaccharide structures has hampered efforts aimed at their valorization. In this work, we used RG-II as a model to demonstrate the steps necessary to isolate and characterize polysaccharides using chromatographic, MS, and NMR techniques. The principles can be applied to the characterization of other saccharide structures and will help inform researchers on how saccharide structure relates to functional properties in the future.

Sign in / Sign up

Export Citation Format

Share Document