ABSTRACT
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-1ß. IL-12p40, IL-23p19, TNF-α, IL-17A, IFN-γ, IL-10, TGFß1) 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-α and IFN-γ 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.
ABSTRACT
OBJECTIVE: The objective of this study was to examine in detail the complaints against veterinarians submitted by pet owners and evaluated by the Turkish Veterinary Medical Association in Türkiye, with the aim to create awareness among Turkish veterinarians about the nature of the complaints and how they might reduce the risk of making medical errors. SAMPLE: 127 files of complaints. METHODS: A total of 127 written complaints from pet owners filed between January 2012 and December 2021 were analyzed. The pet owners' complaints were subjected to a conventional content analysis to identify the primary, secondary, and tertiary themes. Each case was evaluated by a 3-level complaint-coding taxonomy. The first level included 3 domains (themes), namely clinical, management, and relationship, while the second level was ordered in a total of 7 subcategories of complaint types. Thereafter, the third-level minor themes were grouped into related subcategories. RESULTS: From 127 file complaints, 296 specific issues were identified. Of these, 62% were in the clinical domain, 24% in the management domain, and 14% about poor behavior of the attending veterinarians. The most common (43%) complaint was medical errors. CLINICAL RELEVANCE: An increased awareness of common medical errors should be promoted among Turkish veterinarians in order to reduce the risk of negligence and malpractice.