Yazar "Kaya, A." seçeneğine göre listele

Listeleniyor 1 - 6 / 6
  • Küçük Resim Yok
    Öğe
    The clinicopathological features and survival of Castleman disease: a multicenter Turkish study
    (Verduci Publisher, 2022) Yildiz, J.; Bagci, M.; Sayin, S.; Kaya, A.; Yilmaz, F.; Ekinci, O.; Dal, M. S.
    OBJECTIVE: In this study, we aimed to investigate the clinicopathological features and survival of CD, which is quite rare and has many unknowns. PATIENTS AND METHODS: This study was conducted by retrospectively evaluating patients diagnosed with CD in six different centers in Turkey. RESULTS: The median age of 33 patients included in the study was 49 and 51.5% (n = 17) of these patients were women. 18 (54.5%) patients were in the hyaline vascular subtype and most of the patients were UCD (n = 20, 60.6%). The most common involvement region was head and neck (n = 19, 57.5%). The UCD group was younger than the MCD group (p=0.027). Visceral lymph node involvement was higher in MCD than in UCD (p=0.001). Similarly, it was observed that there was more hepatomegaly (p=0.035) and splenomegaly (p=0.013) in the MCD group. During the median 19.5 months follow-up period, there were no patients who died. CONCLUSIONS: It was observed that UCD and MCD are different clinical entities. Promising survival times can be achieved with surgical and systemic treatments in both subtypes of this extremely rare disease. However, this re- suit should be supported by well-designed prospective comprehensive studies.
  • Küçük Resim Yok
    Öğe
    COMORBIDITIES IN PSORIATIC ARTHRITIS: COMPARISON WITH RHEUMATOID ARTHRITIS AND PSORIASIS
    (Clinical & Exper Rheumatology, 2014) Nas, K.; Karkucak, M.; Durmus, B.; Karatay, S.; Capkin, E.; Kaya, A.; Ucmak, D.
    [Abstract Not Available]
  • Küçük Resim Yok
    Öğe
    The Effect of Dietary Supplements on Healing of Alloplastic Bone Grafted Defects in Rat Tibia
    (Soc Chilena Anatomia, 2015) Kaya, A.; Aktas, A.; Akdemir, M. F.; Kaya, B.; Deveci, E.
    The aim of this investigation was to evaluate the potential effects of the systemically delivered combination of calcium, zinc and vit-d supplementation of the locally applied alloplastic bone graft. 28 male Wistar albino rats were used in this study. In each animal, bone defects (10 mm length (sic) 3 mm width (sic) 2 mm depth) were created in the tibias. The animals were divided into four groups. In Group 1 (Control Group) rats were fed with standard rat diet. In Group 2 (Calcium Group) rats received calcium carbonate (15 mg/kg body weight) suspended in saline. In Group 3 (Calcium/Zinc Group) rats received calcium carbonate (15 mg/kg body weight) and zinc sulfate (4 mg/kg body weight) suspended in saline. In Group 4 (Calcium/Vitamin D Group) rats received calcium carbonate (15 mg/kg body weight) and Vitamin D (500 IU/kg body weight) suspended in olive oil. Histopathological analysis of samples was performed to evaluate the process of osteoblastic activity, matrix formation, trabecular bone formation and myeloid tissue in bone defects. Total amounts of osteoblastic activity, matrix formation, trabecular bone formation and myeloid tissue in Ca Group (p= 0.002), Ca/Zinc Group (p= 0.002), and Ca/Vit.D Group (p= 0.001) were significantly higher than in Control Group. The total amounts of Ca/Vit.D Group were significantly different than Control Group and Ca Group. The results of the present study indicated that the oral calcium carbonate supplementation combination with zinc may have systemic effects on accelerating bone regeneration in alloplastic bone grafted tibial defects. Further human studies involving long-term follow up and different type of bone grafts should be conducted.
  • Küçük Resim Yok
    Öğe
    A Performance Analysis on Pressure Loss and Airflow Diffusion in a Chamber with Perforated V-Proflle Diffuser Designed for Air Handling Units (AHUs)
    (Isfahan Univ Technology, 2018) Kamer, M. S.; Erdogan, A.; Tacgun, E.; Sonmez, K.; Kaya, A.; Aksoy, I. G.; Canbazoglu, S.
    Outlet cross-sectional area of fans used in air handling units is smaller than cross-sectional area of chambers which are located next to the fan. In order to ensure efficiently operating of the air handling units, it is required that the air flows through a perforated diffuser to create a uniform air diffusion from fan outlet to following chamber with a minimum pressure loss and uniform velocity distribution. In this concept, numerical simulations and experiments were performed for the chamber with perforated V-profile diffuser, which is often used in air handling units because of its simple geometry and easy manufacturing. Pressure losses were firstly obtained experimentally for different air velocities in the chamber. Then a performance analysis on the air flow diffusion and pressure losses inside chamber with perforated V-profile diffuser for different geometric parameters such as entry length, apex angle, geometry and pattern of hole, plate thickness, porosity and surface roughness has been carried out numerically. It is seen that the experimental results validated with the numerical turbulence model results.
  • Küçük Resim Yok
    Öğe
    Relation of basal vitamin D and parathyroid hormone levels to CD34+cell counts in multiple myeloma and lymphoma patients with stem cell mobilization
    (Pergamon-Elsevier Science Ltd, 2018) Kaya, A.; Kaya, E.; Erkurt, M.; Kuku, I.
    [Abstract Not Available]
  • Küçük Resim Yok
    Öğe
    Relation of basal vitamin D and parathyroid hormone levels to CD34+cell counts in multiple myeloma and lymphoma patients with stem cell mobilization
    (Pergamon-elsevıer scıence ltd, the boulevard, langford lane, kıdlıngton, oxford ox5 1gb, england, 2018) Kaya, A.; Kaya, E.; Erkut, M.; Kuku, I