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Öğe Association of demodicosis with acne rosacea(2010) Tas Cengiz Z.; Yilmaz H.; Akdeniz N.; Çiçek M.; Özkol H.; Çalka O.Objectives: Demodex spp of humans are encountered frequently all over the world. The role of these parasites is controversial in the causation of skin diseases. This study was carried out to determine the prevalence and the association of Demodex spp with acne rosacea. Methodology: The study was conducted between the years of 2005-2008 in the output clinic of Dermatology and Parasitology Laboratory of Health Research and Training Hospital of Yüzüncü Yil University. One hundred two patients (patient group) composing of 59 females and 43 males with acne rosacea and randomly selected 50 healthy subjects (control group) were examined for Demodex spp. Twenty seven patients were under the age of 35, and 75 patients were aging 35 years old and over. Samples were plucked out from surface of nose and forehead of patients with acne rosacea and healthy subjects by standardized surface skin biopsy (SSSB) method in the Laboratory. The preparations prepared in Hoyer solution were examined under 4X and 10X objectives of light microscope. Results: The detected parasites were higher in the patient group with acne rosacea (67.65%) than the control group (6%), in females (76.27%) than males (55.81%) and in patients aging 35 years old and over (74.67%) than the patients under 35 years of age (48.15%). Significant relationships were detected between acne rosacea and demodicosis, sex and demodicosis, and age and demodicosis (p<0.001, p<0.05 and p<0.05, respectively). Conclusion: It was concluded that there is a relationship between the demodicosis and acne rosacea, and dermatologists should take into consideration the Demodex spp. in the etiology of acne rosacea.Öğe Differential invariants for hyperbolic systems(2011) Yilmaz H.We show that Z3 x R4 Toda Lattice Equations can be obtained from the LaplaceDarboux transformations of invariants for a four-dimensional hyperbolic system. We also present the relationship between the invariants of L and the invariants of M when [L, M] = 0, where L and M are n × n operator matrices.© Dynamic Publishers, Inc.Öğe Polyphenol oxidase activity during rooting in cuttings of grape (Vitis vinifera L.) varieties(2003) Yilmaz H.; Taşkin T.; Otludil B.Polyphenol oxidase (PPO) activity was investigated during rooting in cuttings from three different grape cultivars (Vitis vinifera L. cvs. Muscat, Cardinal and Perlelte), and the enzyme activity and rooting ability were compared. Rooting was observed on the Muscat and Perlelte cuttings, but not on the Cardinal cuttings. PPO activity started to increase in the early stage of the experiment, and decreased after root emergence in the Muscat and Perlelte cuttings. However, enzyme activity started to increase in the early stages and continued throughout the experiment in the Cardinal cuttings. No apparent correlation was found between PPO activity and rooting ability in the cutting.Öğe Prevalence of toxocariasis in human and dogs in van province(Veteriner Fakultesi Dergisi, 2012) Çiçek M.; Yilmaz H.This investigation was performed to detect the seroprevalence of Toxocara canis in humans by ELISA and distribution of intestinal parasites in dogs in Van province. The study was carried out between 2005-2007 Septembers. Eight hundred patients with complaints such as abdominal pain, hypereosinophilia and urticaria who were inspected in various outpatients' clinics of the Research Hospital of Yüzüncü Yi{dotless}l University and 100 healthy individuals as control group were investigated. T. canis seropositivity by ELISA, eosinophil counts and total IgE levels were investigated in blood samples received from patients and control group individuals; stool samples of persons were also examined with native-Lugol, trichrome staining and formalin-ether sedimentation methods. Besides, the stool samples of 420 dogs were also taken for the investigation of intestinal parasites. The stools of the dogs were examined for T. canis and other intestinal parasites macroscopically, by native-Lugol, modified acid-fast staining and flotation methods. It was detected toxocariasis seropositivity in 15.25% and intestinal parasites in 13.88% of human. It was determined the eosinophilia in 25% of patients and toxocariasis seropositive in 28.05% of these patients. It was detected urticaria in 32.78%, pruritus in 22.13% and abdominal pain in 9.83% of patients with toxocariasis. One or more intestinal parasites were founded in 63.10% of the dogs, and T. canis was encountered as 19.05%. Positive relationship was detected among toxocariasis and living in rural area (P<0.01), eosinophilia (P<0.001), ageing (P<0.001) and high level of IgE (P<0.001). It was concluded that, toxocariasis is frequently encountered in humans and animals in Van province, measures should be taken to prevent this disease and ELISA method should be take place between routine diagnostic tests for diagnosis of this disease in human.Öğe Variation in ruscogenin contents in Ruscus aculeatus L. growing wild in southern Turkey(Chemical Publishing Co., 2007) Tansi S.; Kokdil G.; Karaman S.; Toncer O.; Yilmaz H.The ruscogenin contents of the underground and aerial parts of Ruscus aculeatus (Liliaceae) collected from 6 different locations in southern Turkey were investigated by HPLC. The highest ruscogenin content (0.12 %) was recorded from the underground parts of R. aculeatus collected from Incebel/Osmaniye area of Turkey. Ruscogenin contents in aerial and underground parts of R. aculeatus varied the contents did not vary greatly in aerial parts.
