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Animals (Basel)
LAQV, REQUIMTE, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, R. Jorge Viterbo Ferreira nº 228, 4050-313 Porto, Portugal.
Published: February 2020
Zinc is an essential element, a cofactor of many enzymes, and performs catalytic, structural and regulatory functions. Once in the gastrointestinal tract, zinc can interact with food constituents. Phytic acid, the major phosphorus storage in plants, limits zinc availability from animal feeds due to the formation of insoluble complexes with phytates. This study tested the effect of supplemental zinc source (zinc sulfate and a chelate zinc proteinate) and the addition of exogenous enzymes from a solid-state fermentation product of to a high phytate diet. The study was designed according to three Latin Squares 4 × 4 with a 2 × 2 factorial arrangement of treatments, with four periods, four diets, and 12 young adult Beagles. Periods lasted 5 weeks each. Diets were supplemented with 75 mg/kg of zinc sulfate (IZ) or zinc proteinate (OZ), and without or with 200 mg/kg of exogenous enzymes (IZ+, OZ+). Results showed that zinc proteinate increased the bioavailability of phosphorus, yet the zinc biomarkers remained unaffected by the zinc source, with the exception of lymphocyte subsets that benefit from zinc proteinate. The use of exogenous enzymes did not affect zinc availability nor nutrient and energy digestibility.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7142709 | PMC |
http://dx.doi.org/10.3390/ani10030400 | DOI Listing |
Plant J
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National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China.
Melatonin significantly influences the regulation of plant growth, development, and stress tolerance. However, the regulatory mechanisms underlying melatonin accumulation for drought tolerance in citrus are not fully understood. In this study, we first demonstrated that application of exogenous melatonin resulted in better drought tolerance by reducing water loss and maintaining redox homeostasis.
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Department of Medicinal Plants, Faculty of Agriculture and Natural Resources, Arak University, Arak, 38156-8-8349, Iran.
Drought stress is one of the most significant environmental challenges, leading to various changes in the physiological processes of plants. Gamma-aminobutyric acid (GABA) is an essential biomolecule that plays a critical role in regulating growth and stress signaling. The current study aims to investigate the effects of GABA on antioxidant enzyme activity and the essential oil composition of Thymus daenensis Celak under different levels of water deficit stress.
View Article and Find Full Text PDFNat Commun
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Department of Anesthesiology, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China.
Astrocytes are closely linked to depression, and the prefrontal cortex (PFC) is an important brain region involved in major depressive disorder (MDD). However, the underlying mechanism by which astrocytes within PFC contribute to MDD remains unclear. Using single-nucleus RNA sequencing analyses, we show a significant reduction in astrocytes and attenuated pleiotrophin-protein tyrosine phosphatase receptor type Z1 (PTN-PTPRZ1) signaling in astrocyte-to-excitatory neuron communication in the PFC of male MDD patients.
View Article and Find Full Text PDFPlant Physiol Biochem
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National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Sanya Research Institute, Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, 572024, China; Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Hainan Key Laboratory for Protection and Utilization of Tropical Bioresources, Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China. Electronic address:
Cassava, a staple crop in tropical regions, suffers from rapid postharvest physiological deterioration (PPD), limiting its shelf life. Although abscisic acid (ABA) has shown potential in alleviating PPD, the underlying regulatory pathways remain largely unexplored. In this study, physiological assays demonstrated that exogenous ABA alleviated PPD in cassava by decreasing HO content.
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ImmunoScape Pte Ltd, Singapore 228208, Singapore.
Summary: The exogenous, i.e. , loading of peptides onto major histocompatibility complex (MHC) class I molecules is a key step in many immunology-related experimental workflows.
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