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A Yeast Model For High Throughput Screening Of Gene-Gene Interactions Relevant To Cftrδf508 Protein Biogenesis, Jingyu Guo

All ETDs from UAB

Much remains unknown about gene interaction in the context of human disease. In cystic fibrosis (CF) a single mutation of the cystic fibrosis transmembrane conductance regulator (CFTR-deltaF508) accounts for most disease. In cell models, CFTR-deltaF508 causes defective protein biogenesis and degradation rather than proper trafficking to the plasma membrane where CFTR normally functions in ion transport. Numerous genes function in the biogenesis of CFTR and influence the fate of CFTR-deltaF508 in cell models. However it is not known whether natural genetic variation in such genes contributes to disease severity in patients. Moreover, there is no easy way to predict how …

Proteomic Clues To The Pathogenesis Of Alexander Disease, Daniel L. Flint

All ETDs from UAB

Since the initial report identifying mutations in GFAP as the primary genetic defect in the astrogliopathy Alexander Disease (AxD) much progress has been made in elucidating the molecular details underpinning the pathogenic role of mutant GFAP in astrocytes. In particular, data collected from mouse, fly, and cell culture models of AxD have isolated several prominent cellular changes that are associated with mutant GFAP expression including oxidative stress, proteasome inhibition, reduced expression of the astrocyte glutamate transporter GLT-1, and loss of neurons; these models have also successfully recapitulated the pathological hallmark of AxD--protein aggregates known as Rosenthal fibers (RFs). To date, …

Modulation Of Wzy-Dependent Capsule Production In Streptococcus Pneumoniae By The Phosphotyrosine-Specific Phosphatase Cpsb, Kimball Aaron Geno

All ETDs from UAB

Biosynthesis of capsule polysaccharide in the Gram-positive pathogen Streptococcus pneumoniae is regulated in part through the action of a phosphoregulatory system comprised of the products of the capsule biosynthetic operon genes cpsBCD. CpsC and CpsD together comprise an autophosphorylating tyrosine kinase whose homologs are implicated in chain length regulation in other systems in both Gram-positive and Gram-negative organisms. CpsB is the cognate phosphatase for the system. Unlike Gram-negative organisms, which use a low molecular weight phosphotyrosine phosphatase in phosphoregulation of capsule synthesis, Gram-positive organisms utilize a polymerase and histidinol phosphatase (PHP) superfamily phosphatase. Deletion of cpsB has resulted in conflicting …

Discovery And Characterization Of Streptococcus Pneumoniae Serotype 11e Reveals A Novel Model Of Serotype Evolution, Juan Jose Calix

All ETDs from UAB

The facultative pathogen Streptococcus pneumoniae is capable of producing a polysaccharide (PS) capsule that prevents bacterial recognition and clearance by the host immune system. Over 90 antigenically distinct capsule serotypes have been identified. Because anti-capsule antibodies can mediate bacterial clearance, capsule diversity is critical to S. pneumoniae survival. However, the mechanisms of capsule evolution remain unclear. Due to the complex interaction of capsule synthesis (cps) genes, it is commonly thought that pneumococcal serotypes evolve once and that all clinically relevant serotypes are genetically derived from a single founding clone. In this dissertation we demonstrate a novel mechanism of capsule evolution …

A Role Of Angiogenin In Models Of Parkinson's Disease, Trent Steidinger

All ETDs from UAB

Parkinson's Disease (PD) is the most common neurodegenerative movement disorder and is characterized by the loss of dopaminergic neurons in the substantia nigra. Gene multiplication of alpha-synuclein causes an autosomal dominant inheritance pattern of PD. A mouse model overexpressing alpha-synuclein demonstrates some of the phenotype seen in PD. In a microarray of these mice, a downregulation of angiogenin was observed prior to symptom onset, demonstrating a potential link of angiogenin to pathology in this model. Angiogenin has also been associated with the onset of Amyotrophic Lateral Sclerosis (ALS), and is neuroprotective in models of ALS through activation of the Akt …

Serotonin Signaling In Angiogenesis, Ali Zamani

All ETDs from UAB

Serotonin (5-hydroxytryptamine, 5-HT) is a well-known "happy" neurotransmitter. Selective serotonin reuptake inhibitors (SSRIs) are the most prescribed class of antidepressant medications to raise the serotonin level in the brain. However, the majority of serotonin in the human body is present outside of the brain and stored in platelets in blood circulation. Blood coagulation is a common feature of malignant solid tumors and leads to significant serotonin release from activated platelets into tumor environment. Due to the unique feature of platelet in lacking nucleus, the impact of platelet and serotonin on cancer progression has been overlooked by studies focusing on cancer …

Seg1 Controls Eisosome Assembly And Shape, Karen E. Moreira, Sebastian Schuck, Bianca Schrul, Florian Fröhlich, James B. Moseley

Dartmouth Scholarship

Eisosomes are stable domains at the plasma membrane of the budding yeast Saccharomyces cerevisiae and have been proposed to function in endocytosis. Eisosomes are composed of two main cytoplasmic proteins, Pil1 and Lsp1, that form a scaffold around furrow-like plasma membrane invaginations. We show here that the poorly characterized eisosome protein Seg1/Ymr086w is important for eisosome biogenesis and architecture. Seg1 was required for efficient incorporation of Pil1 into eisosomes and the generation of normal plasma membrane furrows. Seg1 preceded Pil1 during eisosome formation and established a platform for the assembly of other eisosome components. This platform was further shaped and …

A Novel Function For Snap29 (Synaptosomal-Associated Protein Of 29 Kda) In Mast Cell Phagocytosis., Jordan Wesolowski, Vernon Caldwell, Fabienne Paumet

Department of Microbiology and Immunology Faculty Papers

Mast cells play a critical role in the innate immune response to bacterial infection. They internalize and kill a variety of bacteria and process antigen for presentation to T cells via MHC molecules. Although mast cell phagocytosis appears to play a significant role during bacterial infection, little is known about the proteins involved in its regulation. In this study, we demonstrate that the SNARE protein SNAP29 is involved in mast cell phagocytosis. SNAP29 is localized in the endocytic pathway and is transiently recruited to Escherichia coli (E. coli)-containing phagosomes. Interestingly, overexpression of SNAP29 significantly increases the internalization and killing of …

Exogenous Egf And Bdnf Treatment Enhances Differentiation And Proliferation Of Cultured Taste Cells, Mehmet Hakan Özdener, Nancy Ellen Rawson

Turkish Journal of Medical Sciences

To determine the effects of epidermal growth factor (EGF) and brain-derived neurotrophic factor (BDNF) on taste cell generation by utilizing a long-term rat taste cell culture that exhibits molecular and functional characteristics of mature taste cells. The role of neurotrophic factors in taste cell development is not well understood. Materials and methods: A long-term rat taste cell culture exhibiting molecular and functional characteristics of mature taste cells was used. The effects of 3 different concentrations of EGF and BDNF on taste cell differentiation and proliferation were examined at 3 different time points. Results: We showed the presence of BDNF, EGF …

Violence Among High School Students In Malatya: A Prevalence Study, Osman Celbi̇ş, Leyla Karaoğlu, Mücahi̇t Eğri̇, Bora Özdemi̇r

Turkish Journal of Medical Sciences

To determine the prevalence of violence-related behaviors on school property and to identify the predictors of youth violence among high school adolescents in Malatya. Materials and methods: Using a cluster sampling method, a cross-sectional descriptive study was carried out involving 1175 students. Backward logistic regression analysis was performed to evaluate the independent association existing between the potential risk factors and violence-related behaviors. Results: Of the students, 24.5% had been in a physical fight, 5.5% were injured and had to be treated by a doctor or nurse, and 4.3% had carried a weapon on school property during the 12 months preceding …

Effect Of Ovulation Induction On Qt Dispersion In Electrocardiography, Ayla Üçkuyu, Fai̇ka Ceylan Çi̇ftçi̇, Özgür Çi̇ftçi̇, Emel Ebru Özçi̇men, Erzat Toprak, Erdem Turhan

Turkish Journal of Medical Sciences

To investigate whether ovulation induction resulting in supra-physiological concentration range of ovarian hormones has an effect on interlead ventricular depolarization heterogeneity via QT dispersion measurements. Estrogens influence the duration of cardiac repolarization but there is no significant change in the QT interval duration within the range of physiological estradiol variations. Materials and methods: Included in the study were 40 subjects, in whom ovulation induction was planned, and 20 volunteers. During the study, a 12-lead electrocardiogram of each woman was carried out 3 times: for the first time on day 2-3 of the menstrual cycle (menstrual day), for the second time …

Evaluation Of The Antibacterial Activity Of Zataria Multiflora Boiss., Rhus Coriaria L. (Sumac), Mentha Piperita L., And Ocimum Basilicum L. Extracts On Brucella Strains Isolated From Brucellosis Patients, Yousef Motaharinia, Mohammad Ali Rezaee, Mohammad Saleh Hazhir, Farid Zandi, Reza Shapouri, Mohammad Saied Hakhamaneshi, Ahmad Rashidi, Mohammad Reza Rahmani

Turkish Journal of Medical Sciences

Since brucellosis has been called a chronic illness and treatment of patients infected with this bacterium has not been successful, the present study aim ed to evaluate the effects of several medicinal plant extracts on clinical Brucella strains. Materials and methods: First, Brucella strains were isolated from brucellosis patients. Then an antibiotic resistance assay was performed for these strains, while the antibacterial activity of the above-mentioned extracts was evaluated. Results: After performing accurate evaluations, the obtained results showed that all of the isolated Brucella strains were sensitive to tetracycline, doxycycline, and gentamicin, and the rates of antibiotic resistance to rifampin …

The Epigenetic Regulation Of Cubilin And The Physiological Role Of This Receptor In Maintaining The Homeostasis Of Serum Albumin And Hdl, Sayed Obaidullah Aseem

MUSC Theses and Dissertations

Cubilin is an endocytic receptor capable of mediating the endocytosis of multiple ligands including High Density Lipoprotein apolipoprotein A-I (apoA-1) and albumin. It is highly expressed on the epithelium of intestinal villi and renal proximal tubules. In the kidney, endocytosis mediated by cubilin and its co-receptor megalin is the principal mechanism for proximal tubule reabsorption of filtered proteins, such as albumin and apoA-1. Yet, the consequences of cubilin deficiency on the blood levels of albumin and apoA-1 have not been studied. Furthermore, cubilin is downregulated in chronic diseases such as diabetes. However, little is known about the regulation of cubilin …

Sterol Lipid Metabolism In Down Syndrome Revisited: Down Syndrome Is Associated With A Selective Reduction In Serum Brassicasterol Levels, Gavin Tansley, Daniel T. Holmes, Dieter Lütjohann, Elizabeth Head, Cheryl L. Wellington

Pharmacology and Nutritional Sciences Faculty Publications

Over the past 15 years, insights into sterol metabolism have improved our understanding of the relationship between lipids and common conditions such as atherosclerosis and Alzheimer's Disease (AD). A better understanding of sterol lipid metabolism in individuals with Down Syndrome (DS) may help elucidate how this population's unique metabolic characteristics influence their risks for atherosclerosis and AD. To revisit the question of whether sterol lipid parameters may be altered in DS subjects, we performed a pilot study to assess traditional serum sterol lipids and lipoproteins, as well as markers of sterol biosynthesis, metabolites, and plant sterols in 20 subjects with …

Novel Mechanism Leading To Mismatch Repair Deficiency And Mutator Phenotype, Janice Ortega Rodríguez

Theses and Dissertations--Toxicology and Cancer Biology

DNA mismatch repair (MMR) is a critical genome-maintenance system. It ensures genome stability by correcting mismatches generated during DNA replication, suppressing homologous recombination, and inducing apoptosis in response to severe DNA damage. As a result, defects in MMR lead to genome-wide mutations and susceptibility to both hereditary and sporadic cancer syndromes. The hallmark of cancer cells defective in MMR is their ability to display frequent instability in simple repetitive DNA sequences, a phenomenon called microsatellite instability (MSI). However, only ~70% of the MSI-positive tumors have identifiable MMR gene mutations, indicating that additional factor(s) are responsible for the MSI phenotype in …

Physiological And Toxicological Roles Of Abc Transporters In Cellular Efflux Of Substrates, Donna J. Coy

Theses and Dissertations--Toxicology and Cancer Biology

ATP-binding cassette (ABC) transporters are transmembrane proteins that transport a wide variety of substrates across intra and extra-cellular membranes. A few examples of endo and xenobiotic substrates are metabolic products, lipids, sterols, and drugs. An important function of ABC transporters involved in export is to prevent intracellular the buildup of toxic products. Several ABC transporters have also been associated with drug resistance upon treatment with chemotherapeutic agents. P-glycoprotein (P-GP) and the multidrug resistant (MRP) transporters of the ABC C family are examples of transporters that confer chemo-resistance.

We have studied two unique roles of ABC transporters in the liver and …

Investigation Of The In Vitro Activities Of Various Antibiotics Against Brucella Melitensis Strains, Onur Kaya, Füsun Zeynep Akçam, Güler Yayli

Turkish Journal of Medical Sciences

To assess the antimicrobial susceptibility of Brucella melitensis strains in our region. Brucellosis is a common disease in Turkey. Moreover, difficulties are encountered in the treatment process, such as long-lasting therapy, relapses, and side effects of drugs. Hence, novel treatment approaches and the susceptibility of current antibiotics are vital. Materials and methods: Thirty-four Brucella spp. isolated from blood samples of patients with brucellosis were included. Minimal inhibitory concentrations for tetracycline, rifampicin, streptomycin, ciprofloxacin, doxycycline, ceftriaxone, and levofloxacin were detected by broth microdilution. Results: Tetracycline had the lowest and streptomycin the highest MIC_{50} and MIC_{90} values, respectively. A total of 5 …

Transplantation Of Undifferentiated Bone Marrow Stromal Cells Improves Sciatic Nerve Regeneration And Functional Recovery Through Inside-Out Vein Graft In Rats, Rahim Mohammadi, Saeed Azizi, Nowruz Delirezh, Rahim Hobbenaghi, Keyvan Amini

Turkish Journal of Medical Sciences

To study the effect of undifferentiated bone marrow stromal cells (BMSCs) on peripheral nerve regeneration using a rat sciatic nerve regeneration model. In recent years, cell transplantation has become the focus of attention, and reliable outcomes have been achieved in regeneration of the sciatic nerve. Materials and methods: A 10-mm sciatic nerve defect was bridged using an inside-out vein graft (IOVG) filled with undifferentiated BMSCs (2 × 107 cells/mL). In the control group, the vein was filled with phosphate buffered saline alone. The regenerated fibers were studied 4, 8, and 12 weeks after surgery. Assessment of nerve regeneration was based …

Mean Platelet Volume As A Marker Of Future Cardiovascular Disease Risk In Pregnant Women With Impaired Fasting Glucose And Impaired Glucose Tolerance, Nermi̇n Köşüş, Aydin Köşüş, Ni̇lgün Turhan

Turkish Journal of Medical Sciences

To compare the mean platelet volume (MPV) of pregnant women with mild glycemic disorders with that of healthy pregnant women to find whether these disorders are risk factors for future cardiovascular disease. Materials and methods: Fasting blood glucose and 50-g oral glucose loading were measured. A 100-g, 3-h oral glucose tolerance test was done when plasma glucose was ≥140 mg/dL, following a loading test. According to the test results, 4 groups were formed: control, impaired fasting glucose, false positive loading test, and impaired glucose tolerance. The hematologic parameters were compared in all of the groups. Results: The mean MPV of …

Determination Of The Effect Of Fluconazole Against Candida Albicans And Candida Glabrata By Using Microbroth Kinetic Assay*, Esma Kaya, Hati̇ce Özbi̇lge

Turkish Journal of Medical Sciences

To evaluate the antifungal activity of a model antifungal (fluconazole) against Candida albicans (ATCC 90028) and Candida glabrata (RSKK 04019) strains using a microbroth kinetic assay based on continuous monitoring of changes in the optical density of fungal growth. Recently, antifungal susceptibility testing has become more important because of the increasing incidence of both fungal infections and antifungal drug resistance. Materials and methods: The optical growth densities of C. albicans and C. glabrata in the presence of increasing concentrations of fluconazole were measured every 15 min for 24 h at 35 °C, using a multidetection microplate reader at 405 nm. …

Outcomes In 12 Gynecologic Cancer Patients With Brain Metastasis: A Single Center’S Experience, Esra Çabuk Cömert, Tevfi̇k Berk Bi̇ldaci, Burcu Kisa Karakaya, Nefi̇se Çağla Tarhan, Özlem Özen, Sali̇h Gülşen, Polat Dursun, Ali̇ Ayhan

Turkish Journal of Medical Sciences

To present 12 gynecologic cancer cases with brain metastasis and a discussion of the relevant literature. Gynecologic malignancy is the second most common cancer in elderly women, following breast cancer. These cancers usually spread locally at first, and common distant metastatic sites are the lungs, liver, spleen, and distant lymph nodes. The brain is not a usual site of metastatic involvement. Materials and methods: The study included 12 cases with various gynecologic malignancies that were retrospectively analyzed. Therapeutic modalities, survival, and time between initial surgery and brain metastasis were recorded. Results: The mean survival was 41.4 months in 6 patients …

Relation Between Aortic Stiffness And Extension Of Coronary Artery Disease, Ömer Şatiroğlu, Mehmet Bostan, Nermi̇n Bayar, Yüksel Çi̇çek, Mustafa Çeti̇n, Engi̇n Bozkurt

Turkish Journal of Medical Sciences

To investigate the relation between aortic stiffness and the extension/severity of coronary artery disease (CAD). Materials and methods: A consecutive 100 patients with suspicion of CAD who underwent elective coronary angiography were enrolled in this study. Of those patients determined as having CAD, 63 were classified as Group I (mean age: 62.1 ± 10.3 years; 47 male and 16 female). Group II included 37 patients with normal coronary arteries (mean age: 51.4 ± 10.8 years; 20 male and 17 female). Aortic flexibility (aortic distensibility and stiffness index) was evaluated by echocardiography after coronary angiography in all of the patients. Patient …

Dysregulation Of Nitric Oxide Synthase Activity And Bcl-2 And Caspase-3 Gene Expressions In Renal Tissue Of Streptozotocin-Induced Diabetic Rats, Hüseyi̇n Aktuğ, Vi̇ldan Bozok Çeti̇ntaş, Buket Kosova, Fati̇h Oltulu, Şi̇ri̇n Bakti Demi̇ray, Türker Çavuşoğlu, Saadet Özen Akarca, Altuğ Yavaşoğlu

Turkish Journal of Medical Sciences

To evaluate the effects of diabetes on nitric oxide synthase (NOS) activity and on gene expressions of B-cell lymphoma protein 2 (Bcl-2) and caspase-3 in the renal tissues of streptozotocin (STZ)-induced rats. Materials and methods: Twenty rats were analyzed in 2 equally distributed groups of healthy controls and STZ-induced diabetic rats. Rats with blood glucose levels of >=250 mg/dL were considered diabetic. Renal tissue sections were analyzed histomorphologically and immunohistochemically. Gene expressions of caspase-3 and Bcl-2 were evaluated by real-time quantitative polymerase chain reaction. Results: Bcl-2 expression significantly decreased in the diabetic group, both at the gene and protein level. …

Do Incubation Temperature, Incubation Time, And Carbon Dioxide Affect The Chromogenic Properties Of Chromagar?, Di̇lek Yeşi̇m Meti̇n, Hüsnü Pullukçu, Süleyha Hi̇lmi̇oğlu Polat, Ramazan İnci̇, Zeki̇ye Emel Tümbay

Turkish Journal of Medical Sciences

On CHROMagar medium Candida species form different colors; thus, the medium enables the differentiation of these species from each other as well as from other Candida species. The aim of this study is to investigate the effect of incubation temperatures, incubation times, and CO_2 on the chromogenic properties of CHROMagar. Materials and methods: A total of 112 strains of Candida spp. were used. A 0.5 McFarland suspension of each strain was inoculated onto CHROMagar with a calibrated loop and incubated at 26 °C and 35 °C for 24-48 h in normal atmosphere and in an atmosphere of 5% CO_2. The …

The Relationship Between Insulin Resistance And Carotid Artery Intima-Media Thickness In Obese And Morbidly Obese Women, Gülçi̇n Cengi̇z Ecemi̇ş, Hakki Kahraman, Mehmet Seli̇m Nural, Hali̇l Serdar Aslan, Ayşegül Atmaca

Turkish Journal of Medical Sciences

To compare insulin resistance and carotid intima-media thickness (IMT) between obese, morbidly obese, and healthy women and demonstrate whether there is a relation between these parameters, focusing mainly on morbidly obese women. Materials and methods: Twenty-five morbidly obese women (body mass index (BMI) => 40 kg/m^²), 25 obese women (BMI 30-39.9 kg/m^²), and 25 age-matched healthy women (BMI 18.5-24.9 kg/m^²) were recruited for the study. None of the subjects had diabetes mellitus. BMI, waist-to-hip ratio, lipid profiles, fasting glucose and insulin levels, insulin resistance (by HOMA), and IMT (common carotid, internal carotid, and bifurcation measurements) were compared among the 3 …

Concomitant Carotid Endarterectomy And Off-Pump Coronary Artery Bypass Grafting In Coexistent Carotid And Coronary Artery Diseases, Murat Kurtoğlu, Mehmet Şanser Ateş, İbrahi̇m Duvan, Burak Emre Onuk, Yahya Hali̇dun Karagöz

Turkish Journal of Medical Sciences

To analyze the results of our experience with a combined procedure via off-pump coronary artery bypass (OPCABG) and carotid endarterectomy (CEA) retrospectively. Materials and methods: Eighty-four patients underwent OPCABG and CEA concomitantly between 1998 and 2011. Thirty (35.7%) patients had a cardiac history of myocardial infarction (MI), 13 (15.6%) had unstable angina (USAP), and 27 (32.1%) had USAP together with MI, whereas 14 (16.6%) were asymptomatic. Forty-two (50%) patients showed no neurological symptoms, 20 (23.8%) had transient ischemic attacks (TIAs), 21 (25%) suffered from stroke, and 1 (1.2%) experienced both. CEA was performed before OPCABG in all of the patients. …

Genotyping Of Giardia Intestinalis Isolated From People Living In Sivas, Turkey, Serpi̇l Değerli̇, Naci̇ Değerli̇, Ali̇ Çeli̇ksöz, Semra Özçeli̇k

Turkish Journal of Medical Sciences

The technique of polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) genotyping was used to characterise morphologically identical isolates of Giardia intestinalis from human stool samples. Materials and methods: In this study a total of 17 trophozoite samples, obtained either directly from stool samples or after excystation, or by duodenal aspiration, were used. A set of primers was chosen to amplify the different regions of triose phosphate isomerase (tpi) and a segment of the glutamate dehydrogenase (gdh) genes. A single-stranded conformational polymorphism technique was also used in an attempt to discriminate among some subgroups. Results: Only primers of the 683-bp segment …

Characterization Of Uropathogenic Escherichia Coli Strains Obtained From Urology Outpatient Clinic Of Ege Medical Faculty In İzmir, Betül Gi̇ray, Füsun Bahri̇ye Uçar, Sabi̇re Şöhret Aydemi̇r

Turkish Journal of Medical Sciences

To identify the papG gene and its allelic variation in uropathogenic Escherichia coli (UPEC) strains isolated from patients with acute pyelonephritis and cystitis. Materials and methods: Seventy-five E. coli strains isolated from patients admitted to the University of Ege Medical Faculty urology outpatient clinic were isolated and identified phenotypically. All of these strains were examined for the papG gene and allelic distribution of this gene with the multiplex polymerase chain reaction technique. Results: papG genes were found in 24 of 75 E. coli strains. Of these 24 strains, 7 (29%) had papG class II only, 8 (33%) had class III …

Molecular Typing And Sequencing Of Adenovirus Isolated From A Conjunctivitis Outbreak In A Neonatal Intensive Care Unit By Pcr, Candan Çi̇çek, Tamer Şanlidağ, Betül Si̇yah Bi̇lgi̇n, Hüsnü Pullukçu, Si̇nem Akçali, Özge Altun Köroğlu, Mehmet Yalaz, Ni̇lgün Kültürsay

Turkish Journal of Medical Sciences

We aimed to evaluate the molecular typing of adenovirus isolated during an epidemic at the Ege University Children's Hospital neonatal intensive care unit (NICU). Materials and methods: During the NICU outbreak management, 40 clinical samples (from 15 newborn infants and 25 health care providers) were sent to a microbiology laboratory in viral transport media. All the samples were processed using a direct fluorescent antibody (DFA) test and a shell vial cell culture followed by adenovirus polymerase chain reaction (PCR) and DNA sequencing. PCR and DNA sequencing for adenovirus hexon gene hypervariable regions 1-6 were done after DNA extraction from clinical …

Investigating Virulence Factors Of Clinical Candida Isolates In Relation To Atmospheric Conditions And Genotype, Melek İnci̇, Mustafa Altay Atalay, Ayşe Nedret Koç, Erkan Yula, Ömer Evi̇rgen, Süleyman Durmaz, Gonca Demi̇r

Turkish Journal of Medical Sciences

To investigate some virulence factors in Candida species isolated from patients with suspected invasive fungal infection and to identify their relationship with Candida genotypes. Materials and methods: Overall 45 isolates (20 Candida albicans and 25 non-albicans Candida spp.) genotyped by rep-PCR were included in this study. Virulence factors were studied in both aerobic and anaerobic conditions. In isolates, egg yolk agar was used for determining phospholipase activity, while bovine serum albumin agar was used for proteinase activity, Tween-80 medium for esterase activity, and Sabouraud dextrose agar with sheep blood for hemolysin activity. Biofilm formation was detected by the microplate method. …