Frontal Chondrosarcoma in a Cat

F.Yildiz,A.Gurel,T.Yesildere,K.Ozer 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Chondrosarcoma in a CatF. Yildiz*, A. Gurel, T. Yesildere and K. Ozer1

Radical surgical management of perianal giant condyloma acuminatum of Buschke and Löwenstein: long-term results of 11 cases

Yildiz, Alp,Leventoglu, Sezai,Yildiz, Aybala,Inan, Arda,Mentes, Bedrettin Bulent 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.3

Purpose: Perianal Buschke-Löwenstein tumor (BLT) is characterized by an exophytic cauliflower-like mass surrounding the perianal region. Its tendency to infiltrate the adjacent tissues, its massiveness, and its high recurrence rate cause difficulties in treatment. The aim of this study is to report our strategy with wide local excision and flap reconstruction for BLT.Methods: From November 2002 to June 2019, 11 patients (9 men) with a mean age of 33.45 years (range, 19–54 years) were operated on for BLT. All patients underwent wide local excision and V-Y flap reconstruction, supplemented with other flaps whenever needed. No additional modalities were used.Results: Two patients had a history of anal intercourse while all patients were human immunodeficiency virus-negative. The mean tumor length was 15.54 ± 1.34 cm (range, 10–26 cm). Human papillomavirus 6 was the most common type identified. Partial wound dehiscence developed in 3 patients, while anal stenosis, mucosal ectropion, or local recurrence was not observed during the mean follow-up period of 50.45 ± 1.75 months (range, 10–196 months).Conclusion: In patients with perianal BLT, wide local excision and flap reconstruction result in a high healing rate without significant complications.

Cytoplasmic Effects on Gliadin Composition in Winter Durum Wheat (Triticum durum Desf.)

Yildiz, Mustafa,Yildiz, Ayse Varol,O¨zgen, Murat 한국유전학회 2003 Genes & Genomics Vol.25 No.3

Four winter durum wheat (Triticum durum Desf.) cvs. 'Cakmak 79', 'Kirmizi 5132', 'S.Bursa 7113' and line '104', and their 12 reciprocal hybrids were assessed to characterize cytoplamic effect on gliadin compositon. The number and the position of gladin bands on a gel were varied according to the cultivar used as a maternal parent. Cytoplasm-originated gliadin bands were only observed in the crosses of 'Cakmak 79' x 'S.Bursa 7113', 'S.Bursa 7113' x '104', 'Cakmak 79' x '104' and '104' x 'Cakmak 79'. It was observed that male parent affected the composition and the occurrence of gliadin bands originated from cytoplasm of maternal parent.

Is There Any Association Between Childhood Traumatic Experiences, Dissociation and Psychotic Symptoms in Schziophrenic Patients?

Zeynep Yildiz Akbey,Mustafa Yildiz,Nermin Gü,ndü,z 대한신경정신의학회 2019 PSYCHIATRY INVESTIGATION Vol.16 No.5

Objective: The aim of this study was to investigate the rates childhood traumatic experiences (CTEs) of schizophrenia patients and to examine relationship between childhood traumatic experiences, dissociation and psychotic symptoms. Methods: One hundred schizophrenia patients who had 5 or 5 points below in Clinical Global Impression-Severity (CGI-S) and who were not in active psychotic episode and 50 healthy siblings who grew up in the same environment with the patients were included to the study. Structured Clinical Interview for DSM IV, Scale for the Assessment of Positive Symptoms, Scale for the Assessment of Negative Symptoms, Dissociative Experiences Scale (DES), CGI-S, Global Assessment of Functioning Scale and Childhood Trauma Questionnaire (CTQ-28) applied to the patients. Results: Childhood abuse subscales and DES scores were statistically higher in the patient group (p<0.001). We determined moderately significant positive correlation between CTQ-28 and DES. We determined moderately significant positive correlation between CTQ total scores and persecutory delusions, delusions of reference, ability to feel intimacy and closeness; relationship with friends and peers. Also, there was a significant positive correlation between persecutory delusions and CTQ-total, DES-total and all subscales of CTQ-28. Conclusion: Clinicians should inquire about CTEs to develop comprehensive formulations and treatment plans among schizophrenia.

METALLIC INTERFACES IN HARSH CHEMO-MECHANICAL ENVIRONMENTS

Yildiz, Bilge,Nikiforova, Anna,Yip, Sidney Korean Nuclear Society 2009 Nuclear Engineering and Technology Vol.41 No.1

The use of multi scale modeling concepts and simulation techniques to study the destabilization of an ultrathin layer of oxide interface between a metal substrate and the surrounding environment is considered. Of particular interest are chemo-mechanical behavior of this interface in the context of a molecular-level description of stress corrosion cracking. Motivated by our previous molecular dynamics simulations of unit processes in materials strength and toughness, we examine the challenges of dealing with chemical reactivity on an equal footing with mechanical deformation, (a) understanding electron transfer processes using first-principles methods, (b) modeling cation transport and associated charged defect migration kinetics, and (c) simulation of pit nucleation and intergranular deformation to initiate the breakdown of the oxide interlayer. These problems illustrate a level of multi-scale complexity that would be practically impossible to attack by other means; they also point to a perspective framework that could guide future research in the broad computational science community.

Slide Session : OS-END-16 ; Endocrinology : Brachial intima-Media Thickness and Paraoxonase -1 Activity in Different Patients Group

( Yildiz Okuturlar ),( Meral Mert ),( Pinar Karakaya ),( Aysun Erbahceci Salik ),( Asuman Gedikbasi ),( Nilgul Akalin ),( Ozlem Harmankaya ),( Abaki Kumbasar ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Atherosclerosis is one of the most important causes of death worldwide. Detection and prevention of the organ damage and determination of the risk due to atherosclerosis is getting more and more important in recent days. Brachial Intima-Media Thickness (B-IMT), mean platelet volume (MPV), paraoxonase (PON) and arylesterase (ARE) are accepted as markers of atherosclerosis. In this study we aimed to determine the importance of B-IMT, ARE, PON and MPV levels in four patient groups which are expected to have increased risk of atherosclerosis without vascular complications. Methods: A total of 100 patients (32 prediabetic patients = group 1, 13 subclinical hypothyroidism + prediabetic = group 2, 20 subclinical hypothyroidism = group 3, 35 diabetic patients = group 4) are enrolled into the study. Height, weight, BMI, age, gender, smoking, alcohol, exercise, family history of diabetes mellitus and cerebrovasculer disease, childbirth, menopause status and HOMA levels of all patients were recorded. Routine biochemical tests and Alc, lipid profiles, homocysteine, PON, ARE were performed and brachial artery index was measured. Results: There were no significant differences in age, B-IMT, BMI, homocysteine, MPV, PON and LDL, HDL levels between the groups. We found a significant difference in A1c (p=0.001), glucose (p=0.0001), ARE (p=0.0001), triglyceride (p=0.005) and HOMA-R (p=0.0001) levels between groups. The significant correlations were shown in Table-1. Conclusions: The relationship between insulin resistance, lipid profile, TSH, B-IMT, PON, ARE and MPV are not similar in different patient groups. This is probably due to varying degrees of atherosclerosis in patients.

Cyclamen Exerts Cytotoxicity in Solid Tumor Cell Lines: a Step Toward New Anticancer Agents?

Yildiz, Mustafa,Bozcu, Hakan,Tokgun, Onur,Karagur, Ege Riza,Akyurt, Oktay,Akca, Hakan Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.10

Cyclamen coum is a traditional medicinal plant in the Turkey. Its anticancer properties and whether cyclamen extract induces any cytotoxicity in solid cancer cell lines have not been thoroughly investigated previously. Therefore we examined cytotoxic effects on cervical cells; HeLa and non small cell lung cancer cell, H1299, lines; Cyclamen extract induced cellular death of both HeLa and H1299 cells in a dose dependent manner. We also analyzed the capacity of cyclamen extract to induce apoptosis by the TUNEL method. Here, for the first time we report that the extract of Cyclamen coum, an endemic plant for Turkey, Bulgaria, Georgia and the Middle East can induce cytotoxicity via apoptosis in HeLa and H1299 cells. These results imply that cyclamen extract can be further analyzed to potentially find novel anticancer compounds.

Serum galactomannan levels in the diagnosis of invasive aspergillosis

( Yildiz Okuturlar ),( Fahir Ozkalemkas ),( Beyza Ener ),( Sibel Ocak Serin ),( Esra Kazak ),( Tulay Ozcelik ),( Vildan Ozkocaman ),( Hasan Atilla Ozkan ),( Halis Akalin ),( Meral Gunaldi ),( Ridvan A 대한내과학회 2015 The Korean Journal of Internal Medicine Vol.30 No.6

Background/Aims: In this study, the sensitivity-specificity of galactomannan-enzyme immunoassay (GM-EIA) with a cut-off value of 0.5 for a single, two, or three consecutive positivity in the diagnosis of invasive pulmonary aspergillosis (IPA) in neutropenic patients with hematological malignancy was investigated. Methods: IPA was classified as “proven,” “probable,” or “possible” as described in the guidelines prepared by the European Organization for Research and Treatment of Cancer and Mycoses Study Group.” Serum samples were collected from the patients twice a week throughout their hospitalization. A total of 1,385 serum samples, with an average of 8.3 samples per episode, were examined. Results: Based on the 165 febrile episodes in 106 patients, 80 (48.5%) were classified as IPA (4 proven, 11 probable, 65 possible) and 85 (51.5%) as non-IPA. The sensitivity/ specificity was 100%/27.1% for a single proven/probable IPA with the cut of value of GM-EIA ≥ 0.5, 86.7%/71.8% for two consecutive positive results, and 73.3%/85.9% for three consecutive positive results. Conclusions: With the galactomannan levels measured twice a week, consecutive sensitivity decreased and specificity increased. Therefore, an increase may be obtained in sensitivity-specificity by more frequent monitoring of GM-EIA starting from the first day of positivity is detected.

METALLIC INTERFACES IN HARSH CHEMO-MECHANICAL ENVIRONMENTS

Yildiz, Bilge,Nikiforova, Anna,Yip, Sidney Korean Nuclear Society 2009 Nuclear Engineering and Technology Vol.41 No.2

The use of multiscale modeling concepts and simulation techniques to study the destabilization of an ultrathin layer of oxide interface between a metal substrate and the surrounding environment is considered. Of particular interest are chemomechanical behavior of this interface in the context of a molecular-level description of stress corrosion cracking. Motivated by our previous molecular dynamics simulations of unit processes in materials strength and toughness, we examine the challenges of dealing with chemical reactivity on an equal footing with mechanical deformation, (a) understanding electron transfer processes using first-principles methods, (b) modeling cation transport and associated charged defect migration kinetics, and (c) simulation of pit nucleation and intergranular deformation to initiate the breakdown of the oxide interlayer. These problems illustrate a level of multi-scale complexity that would be practically impossible to attack by other means; they also point to a perspective framework that could guide future research in the broad computational science community.

Numerical modelling of Haarajoki test embankment on soft clays with and without PVDs

Yildiz, Abdulazim,Uysal, Firdevs Techno-Press 2015 Geomechanics & engineering Vol.8 No.5

This paper investigates the time dependent behaviour of Haarajoki test embankment on soft structured clay deposit. Half of the embankment is constructed on an area improved with prefabricated vertical drains, while the other half is constructed on the natural deposit without any ground improvement. To analyse the PVD-improved subsoil, axisymmetric vertical drains were converted into equivalent plane strain conditions using three different approaches. The construction and consolidation of the embankment are analysed with the finite element method using a recently developed anisotropic model for time-dependent behaviour of soft clays. The constitutive model, namely ACM-S accounts for combined effects of plastic anisotropy, interparticle bonding and degradation of bonds and creep. For comparison, the problem is also analysed with isotropic Soft Soil Creep and Modified Cam Clay models. The results of the numerical analyses are compared with the field measurements. The results show that neglecting effects of anisotropy, destructuration and creep may lead to inaccurate predictions of soft clay response. Additionally, the numerical results show that the matching methods accurately predict the consolidation behaviour of the embankment on PVD improved soft clays and provide a useful tool for engineering practice.