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  • 1
    In: Revista de Patologia Tropical / Journal of Tropical Pathology, Universidade Federal de Goias, Vol. 52, No. 1 ( 2023-04-17), p. 37-49
    Abstract: The extract of Spondias mombin has constituents which may improve psychiatric disorders, in addition to having antiviral, antifungal, and antimicrobial activity. But despite having several benefits, it is necessary to assess whether the extract may interfere with cell metabolism so furthermore its microbicide potential can be explored. Fifteen Wistar rats were used, divided into four groups (control group; control with extract; hyperlipidemic diet; hyperlipidemic diet and extract). For 12 weeks, the animals were weighed and their blood glucose was assessed. Afterwards, they were euthanized, and the biological material was collected. The evaluation confirmed the efficacy of the extract of S. mombin against cell metabolism of rats, without negatively altering cell viability; the group of rats with an hyperlipidemic diet showed an increase in body weight; however, in the individual assessment of the organs, there were no significant changes. The glycemic index, liver parameters, lipids, and mineral ions did not show changes. Furthermore, the antimicrobial potential of S. mombin extract was observed against Staphylococcus aureus ATCC 29213 and Staphylococcus aureus BLACC. The results suggest that S. mombin extract did not interfere with cell viability, did not show cytotoxicity to cells that were exposed to it, nor did it interfere with the metabolism, organs, and biochemical indices of rats with a standard or hyperlipidemic diet. Considering such characteristics and the potential activities observed in this present study, additional evaluation should be conducted to further assess the role of S. mombin extract as a source of new alternative antimicrobial drug as well as its possible beneficial activity to the cardiovascular system. KEY WORDS: Spondias mombin; hyperlipidemic diet; antimicrobial inhibition; obesity; Staphylococcus aureus.
    Type of Medium: Online Resource
    ISSN: 1980-8178 , 0301-0406
    Language: Unknown
    Publisher: Universidade Federal de Goias
    Publication Date: 2023
    detail.hit.zdb_id: 2411307-4
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  • 2
    In: Neuroimmunomodulation, S. Karger AG, Vol. 23, No. 1 ( 2016), p. 58-66
    Abstract: 〈 b 〉 〈 i 〉 Objectives: 〈 /i 〉 〈 /b 〉 Toll-like receptors (TLRs) are expressed in several immune cells including blood monocytes and resident macrophages, such as microglia in the central nervous system. TLRs recognize pathogen- or damage-associated molecular patterns, leading to the release of inflammatory and toxic molecules, which can contribute to neuroinflammation associated with Parkinson's disease (PD). The aim of this study was to compare the potential of peripheral blood cells from PD patients or healthy subjects to produce cytokines after exposure to TLR agonists, and to investigate TLR2 and TLR4 expression on monocyte subsets. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 Twenty-one patients and 21 healthy controls were recruited. Patients were evaluated according to the Unified Parkinson's Disease Rating Scale, and Hoehn and Yahr stage. Cytokines were measured in supernatants of whole blood cultures after incubation with TLR2, TLR4, or TLR7/8 agonists, by cytometric bead array. Expression of CD14, CD16, TLR2, and TLR4 was analyzed by cytometry. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 Patient blood cells produced lower levels of cytokines in response to TLR2 and also after TLR7/8/R848 activation than controls. Percentages of CD14 〈 sup 〉 + 〈 /sup 〉 CD16 〈 sup 〉 + 〈 /sup 〉 or CD14 〈 sup 〉 + 〈 /sup 〉 CD16 〈 sup 〉 - 〈 /sup 〉 monocytes and TLR2 and TLR4 expression were similar between patients and controls. 〈 b 〉 〈 i 〉 Conclusions: 〈 /i 〉 〈 /b 〉 Blood leukocyte TLR2 and TLR7/8 responses are impaired in PD. This was neither associated with imbalance in monocyte subsets nor with TLR2/TLR4 expression on these cells. The association between a decreased TLR response in periphery and damage of brain in PD must be further investigated.
    Type of Medium: Online Resource
    ISSN: 1021-7401 , 1423-0216
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2016
    detail.hit.zdb_id: 1483035-8
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