Digital Commons Network^™

Localization Of Fam171b Mrna Expression In Mouse Brain Using In-Situ Hybridization, Ashani Kumudika Sudasinghe

All Graduate Theses, Dissertations, and Other Capstone Projects

Proteins containing polyglutamine (polyQ) tracts within their primary amino acid sequence are particularly interesting because expansion mutation within them has been shown to underlie a growing list of severe neurodegenerative disorders including Huntington's Disease and several types of Spinocerebellar Ataxias. FAM171B is a novel polyQ protein that was originally identified via large scale sequencing efforts. However, to date, very little is known regarding its normal cellular function and expression pattern. In this study, in situ hybridization was utilized to assess whether FAM171B is expressed in developing (postnatal days 7, 21, 42) and adult mouse brains. The results of the experiments …

Validating Drug Targets Through Inhibition Of Protein-Protein Interactions In Mycobacterium Tuberculosis, Erin C. Driscoll

Honors Undergraduate Theses

Tuberculosis is the leading cause of death by single infectious disease worldwide; novel antibiotics are needed to continue to treat this disease. To goal of this project is to provide proof-of-principle support for the idea that targeting protein-protein interactions (PPI) is an appropriate course for the discovery of new drugs. This study optimized the M-PFC assay, which allows detection of PPI in Mycobacteria, through the use of stronger promoters and inducible expression of a peptide blocker by riboswitch. To accomplish this, promoter induction studies were used to find stronger promoters for the M-PFC, optimization of the riboswitch as a …

Activation And Expansion Of Natural Killer Cells For Cancer Immunotherapy With Ex21 Exosomes, Sara Khederzadeh

Honors Undergraduate Theses

In the field of cancer immunotherapy, NK cells are recognized for their ability to provide a form of innate immunity against tumor cells. However, the average abundance of NK cells in the blood can be as low as 5% of the total lymphocyte population. As a result, it has been a focus to find novel therapies to expand NK cells in vitro while subsequently enhancing the cytotoxicity of these cells. Previously-defined methods include the minimal expansion of NK cells with high levels of cytokines such as IL-2 and IL-15, as well as co-culturing NK cells with feeder cell populations that …

Chromosomal Findings And Sequence Analysis Of Target Exons Of Calcium-Sensingreceptor (Casr) Gene In Patients With Sagliker Syndrome, Erdal Tunç, Osman Demi̇rhan, Yahya Sağliker, İsmai̇l Yildiz, Nuray Paylar, Ali̇ İrfan Güzel

Turkish Journal of Medical Sciences

Background/aim: Sagliker syndrome (SS) develops as a continuation of chronic kidney disease and secondary hyperparathyroidism conditions. It was thought that there are some genetic predisposition factors leading to SS. The calcium-sensing receptor (CaSR) is essential for calcium homeostasis in the body. We aimed to examine SS patients for chromosome aberrations (CAs) and CaSR gene abnormalities in exons 2 and 3. Materials and methods: Twenty-three patients and 23 control subjects were admitted to Balcalı Hospital of the Medical Faculty of Çukurova University in Turkey between 2009 and 2011. Chromosomal analysis was performed according to standard cytogenetic methods. Full sequencing of exons …

Potential Drug-Drug Interactions Among Prescriptionsfor Elderly Patients In Primary Health Care, Zafer Gören, Mahluga J. Demirkapu, Gökçe Akpinar Acet, Sanda Çali, Medine Gülçebi̇ İdri̇z Oğlu

Turkish Journal of Medical Sciences

Background/aim: Elderly patients are at high risk from drug-drug interactions (DDIs). This study evaluates the potential DDIs in Turkish elderly patients at a primary health care outpatient clinic. Materials and methods: Online database systems were used to examine DDIs on the prescriptions of patients (n = 1206). The clinical severity of DDIs was classified by the Lexi-Interact Online database. Results: Of the 5059 prescriptions, 33% were found to have DDIs. We detected 29 (0.9%) A, 380 (11.8%) B, 2494 (77.7%) C, 289 (9%) D, and 18 (0.6%) X risk rating category DDIs among the prescriptions. Prescriptions of female patients and …

Intravitreal Prn Ranibizumab Treatment For Macular Edemadue To Branch Retinal Vein Occlusion, Hasan Basri̇ Çakmak, Mücella Arikan Yorgun, Yasi̇n Toklu, Melek Mutlu

Turkish Journal of Medical Sciences

Background/aim: To evaluate the effect of intravitreal pro re nata (PRN) ranibizumab treatment from the start on the best-corrected visual acuity (BCVA) and the central retinal thickness (CRT) in macular edema (ME) due to branch retinal vein occlusion (BRVO). Materials and methods: Patients with ME secondary to BRVO, who were treated on a PRN basis after a single intravitreal ranibizumab injection, were retrospectively evaluated. The main outcome measures were changes in BCVA and CRT as measured by optical coherence tomography. Results: The number of injections over 6 months was 2.43 ± 1.16. The mean BCVA of the patients was 0.84 …

Comparison Of Response To Treatment Of Unilateral And Bilateral Varicocelectomy, Ercan Öğreden, Ural Oğuz, Abdullah Çirakoğlu, Erhan Demi̇relli̇, Erdal Benli̇, Orhan Yalçin

Turkish Journal of Medical Sciences

Background/aim: We aimed to compare the results of unilateral and bilateral varicocele surgery. Materials and methods: In two referral hospitals, the data of 180 patients who were treated with unilateral and bilateral microscopic varicocelectomy were retrospectively analyzed. Sperm parameters and spontaneous pregnancy rates were compared in patients who underwent bilateral and unilateral microscopic varicocelectomy. Results: The mean age was 29.6 (17-46) years. While 82 patients underwent unilateral varicocelectomy (Group I), 98 patients underwent bilaterally varicocelectomy (Group II). Forty (48.8%) spontaneous pregnancies occurred in Group I and 59 (60.2%) in Group II. When we analyzed sperm parameters, the rate of increase …

Endosonogragphic Features Of Lesions Suggesting Gastricectopic Pancreas: Experience Of A Single Tertiary Center, Mahmut Yüksel, Sabi̇te Kacar, Muhammet Yener Akpinar, Fati̇h Saygili, Meral Akdoğan Kayhan, Selçuk Di̇şi̇beyaz, Yasemi̇n Özi̇n, Mustafa Kaplan, İhsan Ateş, Ertuğrul Kayaçeti̇n

Turkish Journal of Medical Sciences

Background/aim: We aimed to present the endoscopic ultrasound (EUS) features of gastric lesions suggesting gastric ectopic pancreas during upper gastrointestinal endoscopy that were diagnosed in our gastroenterology unit, which is a tertiary center for endoscopic procedures in Turkey. Materials and methods: The data of patients who underwent upper gastrointestinal EUS in our center between April 2012 and July 2014 were retrospectively analyzed. Results: All of the lesions suggesting gastric ectopic pancreas were localized in the gastric antrum. Thirty-six of 44 lesions (81.1%) showed central dimpling. Lesion borders were shown to be definite in 10 (22.7%) lesions, whereas the borders of …

Alpha-1 Antitrypsin Levels And Polymorphisms In Interstitial Lung Diseases, Nalan Demi̇r, Özlem Erçen Di̇ken, Hali̇l Gürhan Karabulut, Demet Karnak, Oya Kayacan

Turkish Journal of Medical Sciences

Background/aim: Alpha-1 antitrypsin deficiency may be a potential predisposing factor for interstitial lung fibrosis. We investigated alpha-1 antitrypsin levels and its polymorphisms in patients with interstitial lung disease. Materials and methods: A total of 103 interstitial lung disease patients were compared. Results: The mean alpha-1 antitrypsin level in idiopathic interstitial pneumonia patients was 1.67 ± 0.33 g/L, and it was 1.54 ± 0.37 g/L in patients with nonidiopathic interstitial pneumonia (P = 0.13). Low alpha-1 antitrypsin levels were more frequently observed in nonidiopathic interstitial pneumonia patients compared with idiopathic interstitial pneumonia, but the difference was not statistically significant (8.9% vs. …

A Study On The Validity And Reliability Of The Amblyopia Andstrabismus Questionnaire (A&Sq) In Turkish, Hali̇se Çoşkun, Sevi̇nç Taştan, Emi̇ne İyi̇gün, Fati̇h Mehmet Mutlu, Osman Meli̇h Ceylan, Hali̇l İbrahi̇m Altinsoy

Turkish Journal of Medical Sciences

Background/aim: This study aims to evaluate the reliability and validity of the Amblyopia and Strabismus Questionnaire (A&SQ) that is translated into Turkish. Materials and methods: This is a methodological study. A total of 149 patients took part in the survey research between December 2012 and June 2014 in an university hospital, and 37 were retested. Cronbach's alpha coefficient was used for the questionnaire's reliability analysis. Results: Cronbach's alpha coefficients for the subscales of fear of losing the better eye, distance estimation, visual disorientation, double vision, and social contact and appearance were found to be 0.80, 0.88, 0.95, 0.80, and 0.81, …

Effects Of Ankaferd Bloodstopper On Dermal Healing In Diabetic Rats, Sertaç Aktop, Burcu Çevreli̇, Deni̇z Genç, Emel Serdaroğlu Kaşikçi, Ni̇l Çomunoğlu Üstündağ, Noushi̇n Zi̇bandeh, Eli̇f Merve Özcan, Gökhan Göçmen, Mehmet Kami̇l Göker, İsmai̇l Tayfun Uzbay, Tunç Akkoç

Turkish Journal of Medical Sciences

Background/aim: Diabetes mellitus inhibits wound-induced angiogenesis, impairs the wound healing process, and leads to the development of chronic wounds. Ankaferd BloodStopper (ABS) is a new and promising local haemostatic agent. Although the mechanism of ABS-mediated haemostasis is well established, little is known about the associated histological and biochemical tissue reactions. The aim of this study was to evaluate the effects of this new-generation local haemostatic agent on short-term soft-tissue healing in streptozotocin (STZ)-treated rats. Materials and methods: The 24 Wistar albino rats used in this study were divided into STZ-treated (STZ, n = 12) and nontreated groups (control, n = …

Evaluation Of Cytotoxic, Membrane, And Dna Damaging Effects Of Thymus Revolutuscélak Essential Oil On Different Cancer Cells, Aysun Özkan, Ayşe Erdoğan

Turkish Journal of Medical Sciences

Background/aim: In this study, we evaluated Thymus revolutus Célak essential oil and its two main constituents, γ-terpinene and p-cymene, as potential oxidative agents against lung cancer and epidermoid carcinoma cells. Materials and methods: Cell viability assessment was made by CellTiter-Blue® cell viability and 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) assay after treatment with 5?600 ?g/mL concentrations of essential oil, γ-terpinene, and p-cymene. Malondialdehyde and 8-hydroxy-2'-deoxyguanosine levels in parental H1299, epirubicin-resistant (drug-resistant) H1299, A549, and A431 cells were also assayed after essential oil, γ-terpinene, and p-cymene had been administered for 24 h. Glutathione S-transferase (GST), glutathione peroxidase (GPx), glutathione reductase (GRx), and glucose …

Psychosocial Functioning In Pediatric Patients With Pectus Excavatum And Pectus Carinatum, Ali̇ye Tuğba Bahadir, Pinar Kuru, Ayli̇n Çakiroğlu, Ceyda Afacan, Mustafa Yüksel

Turkish Journal of Medical Sciences

Background/aim: Pectus excavatum and pectus carinatum are the most commonly seen anterior chest wall deformities. Recent studies reveal that minimal invasive repair of pectus deformities improves the quality of life. Our aim is to assess the psychosocial functioning and sociodemographic characteristics of pediatric patients with pectus deformities and evaluate the differences between patients operated on with minimal invasive repair techniques and nonoperated patients. Materials and methods: Thirty-two patients with pectus deformities who were operated on 6 months or more before and 31 nonoperated patients participated in the study. The Children's Depression Inventory, Piers-Harris Children's Self-Concept Scale, Capa Social Phobia Scale …

Possible Triggering Factors And Comorbidities In Newlydiagnosed Autoimmune Bullous Diseases, Sevgi̇ Akarsu, Özlem Özbağçivan, Necla Dolaş, Şebnem Aktan

Turkish Journal of Medical Sciences

Background/aim: The distribution and the demographic, etiological, and clinical features of autoimmune bullous diseases (ABDs) vary according to geographic regions of the world. The limited number of reported studies in Turkey are mostly retrospective and generally include only pemphigus. The aim of our study was to evaluate the demographic data, clinical features, associated triggering factors, and comorbidities in patients newly diagnosed with ABDs. Materials and methods: In this descriptive and prospective study, the demographic data, inhabited regions, smoking and drinking habits, presence of comorbidities, and specific and general potential triggering factors of ABDs considered by the patients were examined. Furthermore, …

The Turkish Version Of The Physical Activity Scale For Theelderly (Pase): Its Cultural Adaptation, Validation, And Reliability, Ender Ayvat, Muhammed Kilinç, Nuray Kirdi

Turkish Journal of Medical Sciences

Background/aim: This study aimed to describe the cultural adaptation of the Turkish Physical Activity Scale for the Elderly (PASE) and to examine the reliability and validity of the scale in older Turkish adults. Materials and methods: Eighty elderly people were recruited for the study. The assessments included the PASE, the International Physical Activity Questionnaire (IPAQ), the Short Physical Performance Battery and Short Form-36 Quality of Life Questionnaire (SF-36), and the Mini Mental State Test. Outcome measures were conducted twice within a week (test-retest) for reliability. Results: Cronbach's α coefficient was 0.714 for the initial evaluation. The intraclass correlation coefficient for …

Effects Of A Closed System Suction Connector On Airwayresistance In Ventilated Neonates, Sezi̇n Ünal, Nuri̇ye Ebru Ergenekon, Ebru Kazanci, Selma Aktaş, Feri̇t Kulali, İbrahi̇m Murat Hirfanoğlu, Canan Türkyilmaz, Yildiz Atalay

Turkish Journal of Medical Sciences

Background/aim: Increased airway resistance reduces the effectiveness of ventilation treatment. Endotracheal tubes (ETTs) and connectors contribute to resistance. However, the effect of a closed system suction (CSS) connector is not well known. We compared the in vivo resistance occurring with a CSS connector with that of the standard connector. Materials and methods: This prospective study was conducted at Gazi University Hospital's neonatal intensive care unit. Intubated neonates were studied for two cycles; each cycle contained two periods of ETT + connector pairs (15 min/period) as follows: cycle 1 [A: long ETT + standard connector; B: long ETT + CSS connector] …

Development Of A New Real-Time Pcr Screening Kit For Hbs And Common Beta-Thalassemia Mutations Observed In Turkey, Derya Kan Karaer, Mehmet Ali̇ Ergün, Hati̇ce Ilgin Ruhi̇, Jale Öztürk, Hali̇l Kara, Deni̇z Rei̇soğlu Çakmak, Tali̇hanur Aydoğmuş, Ferda Emri̇ye Perçi̇n

Turkish Journal of Medical Sciences

Background/aim: IVSI-110 (G>A), IVSI-6 (T>C), IVSII-1 (G>A), IVSII-745 (C>G), IVSI-1 (G>A), and HbS are mutations covering 76% of all the β-globin mutations in the Turkish population. In this study, our aim is to develop a reliable, fast, real-time kit for these mutations using the TaqMan probe method. Materials and methods: This study included 100 individuals with beta-thalassemia or sickle cell anemia who had unknown mutations, and 21 controls with known mutations. Results: We designed a kit containing the IVSI-110 (G>A), IVSI-6 (T>C), IVSII-1 (G>A), IVSII-745 (C>G), IVSI-1 (G>A), and HbS …

Relationship Between Kinesiophobia And Pain, Quality Of Life, Functional Status, Disease Activity, Mobility, And Depression In Patients With Ankylosing Spondylitis, Deran Oskay, Zeynep Tuna, İrem Düzgün, Bülent Elbasan, Yavuz Yakut, Abdurrahman Tufan

Turkish Journal of Medical Sciences

Background/aim: Our aim was to investigate the association of kinesiophobia with pain, quality of life, clinical measures, and depression in patients with ankylosing spondylitis (AS). Materials and methods: Patients with AS (n: 163) were enrolled in the study. Kinesiophobia was evaluated with the Tampa Scale of Kinesiophobia (TSK), pain with a visual analog scale (VAS), mobility with Bath Ankylosing Spondylitis Metrology Index (BASMI), disease activity with the Bath AS Disease Activity Index (BASDAI), functional status with the Bath AS Functional Index (BASFI), depression level with Beck's Depression Inventory (BDI), and quality of life with the AS Quality of Life Questionnaire …

The Effects Of The Number Of Physical Therapy Sessions On Pain, Disability,And Quality Of Life In Patients With Chronic Low Back Pain, Burcu Meti̇n Ökmen, Engi̇n Koyuncu, Bi̇lal Uysal, Neşe Özgi̇rgi̇n

Turkish Journal of Medical Sciences

Background/aim: The aim of this study was to investigate and compare the effect of different physical therapy (PT) session numbers on pain, impairment. and quality of life in patients with chronic low back pain (LBP).Materials and methods: In this prospective, randomized-controlled, single-blind trial, a total of 60 patients with chronic LBP were divided into 2 groups with simple randomization within the scope of the study. A PT program of a total of 10 sessions was applied for patients in Group 10 (n = 30) and a total of 15 sessions for patients in Group 15 (n = 30). The main …

Detection And Molecular Characterisation Of Adenovirus In Children Under 5 Years Old With Diarrhoea, Meryem Çolak, Gülendam Bozdayi, Ayli̇n Altay, Zahi̇de Yalaki̇, Kamruddi̇n Ahmed, Seçi̇l Özkan

Turkish Journal of Medical Sciences

Background/aim: To determine the frequency, genotype distribution, and genetic relatedness of adenoviruses in children under 5 years old with diarrhoea and to investigate their distribution according to clinical findings, age, months, and seasons. Materials and methods: Stool samples were collected from 180 children with acute gastroenteritis who presented from July 2007 through June 2011 at the Ankara Training and Education Hospital. Stool samples were analysed by immune chromatographic test (ICT), enzyme immunoassay (EIA), and polymerase chain reaction (PCR). All adenovirus types were determined by nucleotide sequence analysis. A phylogenetic tree was constructed by Mega 6.0 using the neighbour-joining method. Results: …

Patients' Attitudes And Knowledge About Drug Use: A Survey In Turkish Family Healthcare Centres And State Hospitals, Ahmet Akici, Sali̇h Mollahali̇loğlu, Başak Dönertaş, Şenay Özgülcü, Ali̇ Alkan, Nesri̇n Fi̇li̇z Başaran

Turkish Journal of Medical Sciences

Background/aim: Irrational drug use is a common problem. This study aimed to evaluate patients' knowledge and habits concerning drug use, and compare them in terms of some sociodemographic characteristics. Materials and methods: A face-to-face questionnaire was given to outpatients from family healthcare centres (FHCs) and state hospitals (SHs) in 12 provinces in Turkey during May 2010. A total of 4470 patients (FHCs: 2209; SHs: 2261) responded to the questionnaire (response rate: 93.1%). Results: Getting prescriptions without a physical examination was common (second place in FHCs; third place in SHs); 51.0% stated that they wanted physicians to prescribe drugs that they …

Reliability And Validity Of The Bladder And Bowel Dysfunction Questionnaireamong Turkish Children, Fatma Kaya Narter, Fati̇h Tarhan, Kami̇l Fehmi̇ Narter, Kubilay Sabuncu, Rabi̇a Alay Eser, Yasemi̇n Akin, Pinar Ay

Turkish Journal of Medical Sciences

Background/aim: We developed a Turkish version of the Bladder and Bowel Dysfunction Questionnaire (BBDQ) and evaluated its psychometric properties among Turkish pediatric patients.Materials and methods: The BBDQ was translated into Turkish and then it was back-translated into English. A total of 193 patients were asked to complete the Turkish version of the BBDQ as well as the Dysfunctional Voiding and Incontinence Scoring System (DVISS). In addition, 39 children completed the same questionnaires twice at 2-week intervals for test/retest evaluation.Results: Cronbach's alpha coefficient of the BBDQ was 0.727. Reliability of the test/retest was 0.759 (P < 0.001). Area under the curve of the receiver operating characteristic plot was 0.765. There were statistically significant differences in BBDQ scores between the controls and patients (P < 0.001). Analysis demonstrated moderate convergent validity against the DVISS (r: 0.78, r2: 0.601, P < 0.0001).Conclusion: The Turkish version of the BBDQ is a reliable and valid instrument for Turkish pediatric patients with bladder and bowel dysfunction in clinical and research settings.

Adaptation, Reliability, And Validity Study Of The Hwalek-Sengstockelder Abuse Screening Test (H-S/East): A Turkish Version, Ni̇lgün Özçakar, Akça Toprak Ergönen, Mehtap Kartal, Hakan Baydur

Turkish Journal of Medical Sciences

Background/aim: The most important issues in elder abuse and neglect are lack of awareness and difficulties in determining the situation. Our aim is to determine the reliability and validity of the Turkish version of the Hwalek-Sengstock Elder Abuse Screening Test (H-S/EAST).Materials and methods: The H-S/EAST (15-itemed, three-dimensional: direct abuse, characteristics of vulnerability, and potentially abusive situation) was translated according to the guidelines and experts evaluated it for content validity and cultural adaptation. Participants' (n = 252) mean age was 73.4 ± 6.4 years and 58.3% were female. The World Health Organization Quality of Life Instrument-Older Adults Module (WHOQOL-OLD) and the …

Steroidogenesis In The Green Anole Lizard Brain And Gonad, Christine Peek

All Graduate Theses, Dissertations, and Other Capstone Projects

Seasonally breeding animals reproduce during certain times of the year and, subsequently, behaviors, steroid hormone levels, and brain morphology change. The green anole lizard (Anolis carolinensis) is an excellent model to study the regulation of steroid hormone production because they have distinct hormonal and behavioral differences between sexes and seasons. As in other vertebrates, steroidogenesis in anoles is under the control of the hypothalamus-pituitary-gonadal (HPG) axis. We tested the hypothesis that natural variations in steroid hormone levels between sexes and seasons are mediated within the brain and gonad by examining four genes involved in steroidogenesis: StAR, Cyp17α1, HSD17β3, and Cyp19α1. …

Autophagy In Mitochondrial Quality Control And Proteotoxicity In Neurons, Matthew Redmann

All ETDs from UAB

Parkinson’s disease (PD) is the 2nd most common neurodegenerative disorder with aging as a significant risk factor. Sharing with aging brains, postmortem PD brains exhibit cellular deficits including autophagic dysfunction, mitochondrial dysfunction, and intracellular protein aggregates of alpha-synuclein. This dissertation will focus on the interplay between these key disease features. To that end, we coupled primary cortical neuronal cultures from either rats or mice with Seahorse extracellular flux, metabolomics and biochemical techniques. Autophagy is an important cell recycling program responsible for the clearance of damaged proteins and organelles. Bafilomycin A1 and chloroquine are compounds that inhibit autophagy by targeting the …

Prediction Of Cyp2d6 Phenotype From Genotype Across World Populations., Andrea Gaedigk, Katrin Sangkuhl, Michelle Whirl-Carrillo, Teri Klein, J Steven Leeder

Manuscripts, Articles, Book Chapters and Other Papers

PURPOSE: Owing to its highly polymorphic nature and major contribution to the metabolism and bioactivation of numerous clinically used drugs, CYP2D6 is one of the most extensively studied drug-metabolizing enzymes and pharmacogenes. CYP2D6 alleles confer no, decreased, normal, or increased activity and cause a wide range of activity among individuals and between populations. However, there is no standard approach to translate diplotypes into predicted phenotype.

METHODS: We exploited CYP2D6 allele-frequency data that have been compiled for Clinical Pharmacogenetics Implementation Consortium (CPIC) guidelines (>60,000 subjects, 173 reports) in order to estimate genotype-predicted phenotype status across major world populations based on …

Radioactive Contamination Of Natural Biological Systems: Oxidative Balance And Genetic Stability, Daniel Einor

Theses and Dissertations

The global demand for nuclear energy grows, and so do the risks of an accidental release of nuclear products into the environment. Therefore, understanding the health and ecological effects of contamination by radionuclides should be of great interest for biomedical specialists and the public. Empirical studies unequivocally show that high doses of ionizing radiation (IR) shift the redox-balance of many biological systems and increase the rates of genetic errors. However, the effects of chronic low doses of radiation vary significantly between tissues and between species. The present dissertation comprises the results of experimental and meta-analytical research of a variety of …

Antibacterial Resistance Patterns And Incidence Of Hospital-Acquired Staphylococcus Aureus Bacteremia In A Tertiary Care Educational Hospital In Turkey: A Perspective From 2001 To 2013, Oğuz Reşat Si̇pahi̇, Serhat Uysal, Sabi̇re Şöhret Aydemi̇r, Hüsnü Pullukçu, Meltem Taşbakan, Alper Tünger, Fatma Feri̇ha Çi̇lli̇, Tansu Yamazhan, Bi̇lgi̇n Arda, Hi̇lal Si̇pahi̇, Sercan Ulusoy

Turkish Journal of Medical Sciences

Background/aim: Staphylococcus aureus is an important nosocomial pathogen and a successful antimicrobial-resistance developer. In this study we retrospectively evaluated the resistance patterns and incidence of microbiologically confirmed nosocomial bacteremia (MCNB) related S. aureus strains between 2001 and 2013. Materials and methods: Any patient in whom S. aureus was isolated in at least one set of blood cultures (sent to the bacteriology laboratory 72 h after hospital admission) was considered to have MCNB. Results: The methicillin-resistant S. aureus (MRSA) rate in 2001 was 73.8% whereas it was 36.2% in 2013. When the 2001-2003 and 2011?2013 periods were compared, resistance to oxacillin, …

Reactive Oxygen Species-Induced Global Dna Hypomethylation In Bladder Cancer Is Mediated Via Increased Formation Of 8-Hydroxy-2'-Deoxyguanosine, Patcharawalai Whongsiri

Chulalongkorn University Theses and Dissertations (Chula ETD)

Oxidative stress, as a consequence of the elevated reactive oxygen species (ROS), has been implicated in various chronic diseases including cancers by, for examples, causing oxidative DNA damage and altering epigenetic regulation. Long interspersed element-1 (LINE-1) is an only active retrotransposable elements in human DNA, comprising up to 17% of the whole genome. LINE-1 hypomethylation is reported in bladder cancer and evidently it is a consequence of oxidative stress. In this study, we investigated the expression of 5-methylcytosine (5-mC), 8-hydroxydeoxyguanosine (8-OHdG), LINE-1-endoced protein (ORF1p), histone H3K9me3 and HP1 alpha in bladder cancer tissues. Mechanistic insight into how oxidative stress affected …

Effects Of Genistein On Oxidative Stress And Inflammation In Acute Pancreatitis Mice, Jumlongluk Sriko

Chulalongkorn University Theses and Dissertations (Chula ETD)

Genistein (GEN), the most abundant isoflavones in soy, has similar structure to human estradiol. It has been reported the potent properties of GEN on antioxidant and anti-inflammation. The aim of this study was to investigate the effects of GEN on oxidative stress, inflammatory, and histopathology in acute pancreatitis induced by L-arginine in mice. Male ICR mice were randomly divided into 4 groups (6 mice in each group). Control (Con) group: mice were injected with 2% dimethyl sulfoxide (DMSO) once daily for 4 days, via IP. Acute pancreatitis (AP) group: mice were injected 2 times (1 hour interval) of 350 mg/100 …