20 results match your criteria: "National Agricultural and Food Center[Affiliation]"

In the present study, we examined the functional interrelationships between microRNAs and plant polyphenols in the regulation of ovarian cell functions. For this purpose, we compared the basic functions of porcine ovarian granulosa cells with or without transfection with miR-152 mimics that were cultured with or without quercetin. The expression levels of miR-152, cell viability, cell proliferation (accumulation of proliferating cell nuclear antigen, PCNA), apoptosis (accumulation of Bax) and the release of progesterone, estradiol, and insulin-like growth factor I (IGF-I) were analyzed by real-time quantitative polymerase chain reaction (RT‒qPCR), the Trypan blue exclusion test, quantitative immunocytochemistry, and enzyme-linked immunosorbent assays (ELISAs).

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Background: Apricot kernels containing amygdalin (AMG) as the major cyanogenic glycoside are potentially useful as a complementary therapy for the management of several ailments including cancer. Nevertheless, little is known regarding the toxic and therapeutic doses of AMG, particularly in terms of male reproduction. Hence, this study evaluates selected qualitative characteristics of rabbit testicular tissue following administration of AMG or apricot kernels for 28 days.

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Cereal β-d-Glucans in Food Processing Applications and Nanotechnology Research.

Foods

February 2024

Department of Biotechnology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius, Námestie J. Herdu 2, 917 01 Trnava, Slovakia.

Cereal (1,3)(1,4)-β-d-glucans, known as β-d-glucans, are cell wall polysaccharides observed in selected plants of grasses, and oats and barley are their good natural sources. Thanks to their physicochemical properties β-d-glucans have therapeutic and nutritional potential and a specific place for their functional characteristics in diverse food formulations. They can function as thickeners, stabilizers, emulsifiers, and textural and gelation agents in beverages, bakery, meat, and extruded products.

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Suspension culture of stem cells established of Calendula officinalis L.

Sci Rep

January 2024

Department of Biotechnology, Faculty of Natural Sciences, University of Ss. Cyril and Methodius, Námestie J. Herdu 2, 917 01, Trnava, Slovakia.

Plant stem cell cultures have so far been established in only a few plant species using cambial meristematic cells. The presence of stem cells or stem cell-like cells in other organs and tissues of the plant body, as well as the possibility of de novo generation of meristematic cells from differentiated cells, allow to consider the establishment of stem cell cultures in a broader range of species. This study aimed to establish a stem cell culture of the medicinal plant Calendula officinalis L.

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The objective of this study was to examine the direct effects of the medicinal plant fennel on basic functions of ovarian cells, including proliferation, apoptosis, and release of progesterone and insulin-like growth factor I (IGFI), as well as to prevent the influence of the environmental contaminant benzene on these cells. Porcine ovarian granulosa cells were cultured with or without fennel extract alone or in combination with benzene. The expression of the proliferation marker PCNA and the apoptosis marker bax was analyzed by quantitative immunocytochemistry and enzyme-linked immunosorbent assay (ELISA).

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Introduction: Due to the intensification of fish farming and the associated spread of antimicrobial resistance among animals and humans, it is necessary to discover new alternatives in the therapy and prophylaxis of diseases. Probiotics appear to be promising candidates because of their ability to stimulate immune responses and suppress the growth of pathogens.

Methods: The aim of this study was to prepare fish feed mixtures with various compositions and, based on their physical characteristics (sphericity, flow rate, density, hardness, friability, and loss on drying), choose the most suitable one for coating with the selected probiotic strain R2 Biocenol™ CCM 8674 (new nom.

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This review consolidates current knowledge on β-D-glucans in and presents current findings and connections that expand our understanding of the characteristics, functions, and applications of this cell wall polysaccharide. By associating information from multiple disciplines, the review offers valuable insights for researchers, practitioners, and consumers interested in harnessing the benefits of β-D-glucans in various fields. The review can serve as a valuable resource for plant biology researchers, cereal breeders, and plant-based food producers, providing insights into the potential of β-D-glucans and opening new avenues for future research and innovation in the field of this bioactive and functional ingredient.

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Intensive fish farming is associated with a high level of stress, causing immunosuppression. Immunomodulators of natural origin, such as probiotics or phytoadditives, represent a promising alternative for increasing the immune function of fish. In this study, we tested the autochthonous trout probiotic strain R2 in a newly developed, low-cost application form ensuring the rapid revitalization of bacteria.

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Oat is an important natural source of β-D-glucan. This polysaccharide of the cell wall of selected cereals is known for a number of health-promoting effects, such as reducing the level of cholesterol in the blood serum, stabilizing the level of blood glucose, or enhancing immunity. β-D-glucan has positive effects in the plant itself.

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Influence of Nitrogen Nutrition on Fatty Acids in Oilseed Rape ( L.).

Plants (Basel)

December 2021

National Agricultural and Food Center, Research Institute of Plant Production, Research and Breeding Station Vígľaš Pstruša, 96212 Detva, Slovakia.

The aim of the study was to evaluate the effect of nitrogen nutrition on the content of fatty acids and selected qualitative parameters (nitrogenous substances, ash, crude fiber) in winter oilseed rape ( L.). The experiment was carried out at the Vígľaš-Pstruša Research and Breeding Station in 2008-2009 and 2009-2010 by complete block design with four repetitions.

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An evaluation of polymorphism at the microsatellite loci was applied in distinguishing 85 oat ( L.) genotypes selected from the collection of genetic resources. The set of genotypes included oats with white, yellow, and brown seeds as well as a subgroup of naked oat ( var.

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HS-SPME Gas Chromatography Approach for Underivatized Acrylamide Determination in Biscuits.

Foods

September 2021

Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.

Acrylamide (AA) is a food contaminant in thermally processed products that is object of tight control. A simple and easy-to-apply methodology for routine monitoring of AA levels in food products could allow producers to be players in the control of their own products. In this work, a simple methodology for AA quantification without derivatization was developed for biscuits, for which the benchmark levels recommended by EFSA are 350 µg/kg, and 150 µg/kg for biscuits for infants and young children.

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We tested the hypothesis that the maternal supply of essential fatty acids (EFA), especially α-linolenic acid, and conjugated linoleic acid (CLA), affects glucose metabolism, the endocrine regulation of energy metabolism and growth, and the intestinal development of neonatal calves. We studied calves from dams that received an abomasal infusion of 76 g/d coconut oil (CTRL; n = 9), 78 g/d linseed oil and 4 g/d safflower oil (EFA; n = 9), 38 g/d Lutalin (BASF SE) containing 27% cis-9,trans-11 and trans-10,cis-12 CLA (CLA; n = 9), or a combination of EFA and CLA (EFA+CLA; n = 11) during the last 63 d of gestation and early lactation. Calves received colostrum and transition milk from their own dam for the first 5 d of life.

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Procedures for DNA Extraction from Opium Poppy ( L.) and Poppy Seed-Containing Products.

Foods

October 2020

Department of Biotechnology, Faculty of Natural Sciences, University of SS. Cyril and Methodius, Námestie J. Herdu 2, SK-917 01 Trnava, Slovakia.

Several commonly used extraction procedures and commercial kits were compared for extraction of DNA from opium poppy ( L.) seeds, ground seeds, pollen grains, poppy seed filling from a bakery product, and poppy oil. The newly developed extraction protocol was much simpler, reduced the cost and time required for DNA extraction from the native and ground seeds, and pollen grains.

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Article Synopsis
  • Species from the Celastraceae family contain unique genes that can alter oil content and fatty acid composition in vegetable oils.
  • Researchers identified and isolated a gene coding for diacylglycerol acetyltransferase (DAcT) that allows plants to create acetylated triacylglycerols.
  • This gene was successfully modified, cloned, and inserted into tobacco plants, leading to confirmed overexpression and variable production of acetylated triacylglycerols in the transgenic plants' immature seeds.
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The objective of our study was to examine the direct effects of the medicinal plant Tribulus terrestris L. (puncturevine) on the basic functions of ovarian cells, including their proliferation, apoptosis, and response to the physiological hormonal stimulator ghrelin. In the first series of experiments, porcine ovarian granulosa cells were cultured with or without puncturevine extracts at concentrations of 0, 1, 10, or 100 μg/ml.

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This study evaluates rabbit spermatozoa motility parameters after administration of amygdalin and apricot seeds during a 28-day period. Apricot seeds are potentially useful in human nutrition and amygdalin is the major cyanogenic glycoside present therein. The rabbits were randomly divided into the five groups (Ctrl-Control, P1, P2, P3, P4) with 4 males in each group.

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Chromic oxide and acid-insoluble ash as markers in digestibility studies with growing pigs and sows.

J Anim Physiol Anim Nutr (Berl)

February 2017

National Agricultural and Food Center, Research Institute of Animal Production Nitra, Institute of Nutrition, Lužianky, Slovakia.

The results of three experiments, focused on the determination of endogenous ileal flow (EIF) of amino acids (AA) and nitrogen (N) (Exp. 1), apparent ileal digestibility (AID) of AA and N (Exp. 2), and apparent total tract digestibility (ATTD) of dry matter (DM), organic matter (OM), N, calcium (Ca) and phosphorus (P) (Exps.

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The artificial gene D6D encoding the enzyme ∆⁶desaturase was designed and synthesized using the sequence of the same gene from the fungus Thamnidium elegans. The original start codon was replaced by the signal sequence derived from the wheat gene for high-molecular-weight glutenin subunit and the codon usage was completely changed for optimal expression in wheat. Synthesized artificial D6D gene was delivered into plants of the spring wheat line CY-45 and the gene itself, as well as transcribed D6D mRNA were confirmed in plants of T₀ and T₁ generations.

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Amniotic fluid stem cells (AFSC) represent an attractive potential cell source for fetal and pediatric cell-based therapies. However, upgrading them to pluripotency confers refractoriness toward senescence, higher proliferation rate and unlimited differentiation potential. AFSC were observed to rapidly and efficiently reacquire pluripotency which together with their easy recovery makes them an attractive cell source for reprogramming.

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