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    Hematobiochemical profiles, mineral concentrations and oxidative stress indicators in beef cattle with pica
    (Taylor & Francis Ltd, 2019) Onmaz, Ali Cesur; Gunes, Vehbi; Cinar, Miyase; Citil, Mehmet; Keles, Ihsan
    Pica, or "depraved appetite", is defined as ingestion of non-nutritive substances. Many factors influencing pica in animals have been identified , but the etiology is controversial. This study was conducted to evaluate haematological and biochemical parameters, trace element concentrations, the total antioxidant status (TAS), total oxidative status (TOS) and oxidative stress index (OSI) in beef cattle with and without pica. Ten beef cattle with pica (group I) and another ten healthy beef cattle (Group II) were used in the study. Serum TAS and TOS were measured by a colorimetric method. In group I, haemoglobin value and serum iron, copper and selenium concentrations were significantly lower than those of group II (p < .05). Cortisol level and the other biochemical parameters were not statistically different between the groups (p > .05). Compared to the healthy controls mean TAS values were significantly decreased in the group I (p < .05), whereas the TOS and OSI values did not differ statistically between the two groups (p > .05). Parasitological analysis revealed that Trichostrongylidae spp eggs were more common in group I. In conclusion, serum iron, copper and selenium deficiency with decreased antioxidant capacity may cause the symptoms of pica in beef cattle. Prophylactic use of trace mineral supplement containing iron, copper, selenium and antioxidants in beef cattle may be beneficial in preventing deviated appetite and in strengthening the antioxidant defence system.
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    Öğe
    Investigation of immunomodulatory and cytotoxic effects of shed snake skin (Elaphe sauromates) extract
    (Frontiers Media Sa, 2024) Sinmez, Cagri Caglar; Tufekci, Emre; Demir, Busra Seniz; Eken, Ahmet; Gunes, Vehbi; Ekici, Seda; Bozkaya, Esra
    Introduction: Shed snake skin (SSS) is commonly used empirically in ethnomedicine to treat psoriasis, acne, warts, eczema, scabies, open wounds, hemorrhoids, and glaucoma. Although a few studies exist, SSS extracts' in vitro immunological effects have yet to be well described. Therefore, we aimed to investigate the immunomodulatory effects of SSS extract on murine lymphocytes and T cells. Methods: Hexane, methanol, and chloroform extractions were conducted in collected SSS samples. Protein concentrations in the SSS extract were measured. The cytotoxic and anticancer activities were measured using L929 Fibroblast and SK MEL 30 Cell Lines via MTT assay as described in TS EN ISO 10993-5. Immunomodulatory activities of SSS extract on total lymphocytes or enriched CD4(+) T cell cultures, their cell-specific pro-inflammatory cytokines (IL-6, IL-1 beta. IL-12p40, IL-23p19, TNF-alpha, IL-17A, IFN-gamma, IL-10, TGF beta 1) levels were measured via FACS ARIA III analysis and related gene expression with Real-Time Quantitative Polymerase Chain Reaction (Rt-qPCR). Results: Hexane, methanol, and chloroform-extracted SSS were tested on SK-MEL-30 cells via MTT and revealed a superior anti-proliferative effect for hexane extract of SSS at low concentrations. SSS treatment of murine lymphocytes augmented Tnf-alpha and IFN-gamma levels produced by CD3(+) T cells when lymphocytes were activated with anti-CD3/CD28 or LPS stimulation. This effect required the presence of non-T cells, possibly antigen-presenting cells, and was not observed on purified CD4(+) T cells. Additionally, SSS significantly blocked suppressive cytokine Tgfb gene expression (but not Il10) without altering in vitro Treg generation/or expansion. Discussion: This is the first in vitro study investigating SSS's anti-tumor and immunomodulatory effects. Our data provide evidence for SSS's anti-proliferative activity on SK-MEL-30 cells and its pro-inflammatory role on murine lymphocytes, which warrants further investigation of the potential use of SSS extract with in vivo disease models.