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    Investigation of the relationship between apelin hormone response and some physiological parameters in enzootic bovine leukosis virus infected cattle
    (HELLENIC VETERINARY MEDICAL SOC, 2025) Sait, A; Bayraktar, B; Korkmaz, S; Genç, M; Bayraktar, S; Kotan, GC; Aydemir, S; Takma, Ç; Bülbül, AS; Aksakal,; Tekçe, E; Özcan, GBB; Kaya, H; Odabaşı, M
    Apelin is a hormone with lymphangiogenesis potential, associated with tumor growth and lymph node metastasis, and is reported to stimulate tumor vascularization. This study aimed to investigate the response of the apelin hormone in cattle with and without Enzootic Bovine Leukosis (EBL) infection, based on physiological parameters such as breed, age, and body condition score (BCS). A total of 120 Simmental and Montafon cattle of varying ages (<2, 2-8, and >8) and BCS categories (<2, 3-3.5, and >= 4) were included in the study. Serum apelin hormone levels were measured using the ELISA technique in blood samples collected from the neck vein ( Vena jugularis) of the animals. The analysis of mean serum apelin (ng/mL) values revealed that, among EBL-positive cattle, the highest value was 2.77 ng/mL in Simmental cattle aged 2-8 years with a BCS of 3-3.5, while a value of 2.69 ng/mL was observed in Montafon cattle aged >8 years with a BCS of 3-3.5. For EBL-negative cattle, the highest mean serum apelin value was 2.24 ng/mL, recorded in Simmental cattle aged 2-8 years with a BCS of 3-3.5, whereas it was 1.45 ng/mL in Montafon cattle aged >8 years with the same BCS. In conclusion, this study demonstrated for the first time the effect of apelin hormone levels in cattle with or without EBL, depending on physiological parameters such as age, breed, and BCS. It is suggested that the apelin hormone, which is involved in neoplastic lymphocyte cell infiltration in the lymphoreticular tissues of cattle, and plays a role in regulating tumor growth in EBL, a malignant tumor disease, may contribute to eradication programs. Moreover, the evaluated parameters may prove valuable for disease prevention and control strategies.
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    Öğe
    Perceived helicopter parenting and its association with coping skills and stress appraisals in Turkish youth athletes
    (FRONTIERS MEDIA SA, 2025) Denizci, T; Şingün, RHO; Kaya, H; Talaghir, LG; Iconomescu, TM; Bentea, CC
    Introduction: Helicopter parenting (HP), characterized by overinvolved behaviors, may impact young athletes' psychological skills. This study aimed to examine the relationship between perceived HP, athletic coping skills, and stress appraisals (challenge and threat) in Turkish competitive youth athletes aged 13-15 years. Methods: A total of 398 competitive youth athletes participated, with 302 categorized into HP (n = 51) or regular parenting (RP, n = 251) groups. The Perceived Helicopter Parenting Scale, Athletic Coping Skills Inventory-28, and Challenge and Threat in Sport Scale were administered at two time points: during a training session and within 30 minutes before a competitive event. Mann-Whitney U-tests and repeated-measures ANOVA were used for analysis. Results: Athletes with HP parents reported significantly lower total coping skills (p = 0.001) and lower scores on all subscales except coachability (p < 0.05) compared to those with RP parents. Before competitions, HP athletes exhibited lower challenge (p < 0.001) and higher threat appraisals (p = 0.001), with no differences observed during training. Discussion: Perceived HP is associated with reduced coping skills and heightened threat appraisals in competitive contexts, highlighting the need for interventions to promote balanced parental involvement in youth sports.