Tıp Fakültesi / Faculty of Medicine

Permanent URI for this collectionhttps://hdl.handle.net/11727/1403

Browse

Now showing 1 - 20 of 3696

Admission Tpe interval predicts reperfusion success in STEMI patients treated with fibrinolytic agents
(2020) Coner, Ali; Akinci, Sinan; Akkucuk, Mehmet Husamettin; Altin, Cihan; Muderrisoglu, Haldun; 0000-0002-9635-6313; 0000-0003-4569-1143; 0000-0001-5250-5404; 31974326; AAG-8233-2020; AAJ-2828-2021; AAD-5564-2021
Objective: Myocardial infarction is a leading cause of morbidity and mortality. Fibrinolytic administration is still a life-saving choice in ST-segment elevated myocardial infarction (STEMI), but the rate of successful reperfusion can be inconsistent. Failed reperfusion adds additional clinical risks to rescue percutaneous coronary intervention for STEMI patients. The interval between the peak of the T wave and the end of the T wave (Tpe) and the ratio of Tpe and a corrected measurement of the time from the start of the Q wave to the end of the T wave (Tpe/QTc ratio) are relatively new electrocardiogram (ECG) indices and have not yet been tested in STEMI patients treated with fibrinolytic agents. Methods: A total of 177 STEMI patients (mean age: 60.5 +/- 11.1 years; 138 men and 39 women) were enrolled in this retrospective study to evaluate ECG parameters. The Tpe interval and the Tpe/QTc ratio at baseline and at the 90th minute following the administration of fibrinolytic therapy were analyzed. The clinical and ECG findings of successful and failed reperfusion groups were compared. Results: Successful reperfusion was achieved in 119 patients (67.2%). The average Tpe interval on the admission ECG was shorter (91.7 vs. 100.9 milliseconds [ms]) (p<0.001) and shortened more in the successful reperfusion group (9.3 vs. 4.5 ms) (p<0.001). A cut-off value of 89.0 ms for the Tpe interval on the admission ECG was found to be related to reperfusion success with a sensitivity of 90.9%. Conclusion: The Tpe interval was a predictor for reperfusion success in STEMI patients treated with fibrinolytic agents.
Adrenergic receptor behaviors of mesenchymal stem cells obtained from different tissue sources and the effect of the receptor blockade on differentiation
(2021) Maytalman, Erkan; Alizadeh Yegani, Arash; Kozanoglu, Ilknur; Aksu, Fazilet; 0000-0002-5268-1210; 34323168; AAE-1241-2021
In this study, it was aimed to analyze behavioral changes of adrenergic receptors (ARs) in first three passages and osteogenic/adipogenic differentiation of mesenchymal stem cells (MSCs) derived from placenta fetal membrane (FM) and bone marrow (BM). It was also aimed to evaluate effects of receptor blockade on differentiation. We obtained first three passages of MSCs from placenta and BM samples. For cell identification, the cells were analyzed by flow cytometry using CD34, CD45 and CD3, CD105 antibodies in each passage. The effects of propranolol and phenoxybenzamine at incremental doses were analyzed by MTT. In addition, cell cultures were separately maintained with the blockers or without after second passage. After each passage and differentiation, alpha 1A, alpha 1B, alpha 2A, alpha 2B, beta 1, beta 2, beta 3 AR-mRNA expressions analyzed by RT-qPCR technique. BMP6 and PPARG mRNA expressions only after differentiation and passage 3 were analyzed. A microscopic examination was also performed. Our results showed that AR expression behaviors were different in MSCs obtained from different tissue sources. In particular, alpha(1A)-AR and alpha(2A)-AR were expressed with considerably high coefficients in differentiation under blocker effect in BM-derived MSCs. No such coefficients were observed in any group of placental MSCs. In addition, it was found that the blockers stimulated adipogenesis in BM-derived MSCs during osteogenic differentiation. MSCs exhibit protein expressions that vary according to source of tissue and differentiation. Given that MSCs from different sources are used for repair and modulation, our study makes implications of this variable expression intriguing in the clinical practice.
Adult Still's disease: An unusual case with atypical skin and histopathological findings
(2020) Vural, Ayse Tuncer; Ozcan, Deren; Tepeoglu, Merih; 0000-0002-9894-8005; AAK-5222-2021
Adult Still's disease is a rare, acute systemic inflammatory disease characterized by a sudden rising fever, arthralgia/arthritis, neutrophilic leukocytosis and a typical salmon-colored macular or maculopapular rash associated elevated fever. Recently, atypical skin lesions with broad spectrum clinical features and distinctive histopathological findings have been reported in a rare case with active disease. Herein, we report an unusual case of Adult Still disease was presented and the characteristic features of atypical disease were highlighted.
The adverse effects of valproic acid on visual functions in the treatment of retinitis pigmentosa
(2017) Yuce, Aslihan; Totan, Yuksel; Guler, Emre; Dervisogullari, Mehmet Serdar; 29044065
Purpose: To evaluate the efficacy and safety of valproic acid (VPA) treatment in patients with retinitis pigmentosa (RP). Methods: A total of 48 eyes of 24 patients (13 males, 11 females) with RP prescribed VPA were included. The length of VPA treatment was 6-12 months (mean 9.4 months). Parameters evaluated were best-corrected visual acuity (BCVA) (logarithm of the minimum angle of resolution [logMAR]), visual field analyses (VFAs) with Humprey automated perimetry, multifocal electroretinography (ERG) with Roland-RETI scan, and VPA side effects. Results: Mean age was 34.3 +/- 10.3 years (range 18-56 years). Fifteen of the patients (30 eyes) had two ERG and VFA tracings, allowing comparison between baseline and follow-up (range 6-12 months). Mean BCVA before and after VPA therapy was 0.36 +/- 0.38 and 0.36 +/- 0.37 logMAR, respectively (P = 0.32). Quantitative perimetric indices including mean deviation and pattern standard deviation were not significantly changed after VPA therapy (P > 0.05). P1 amplitudes (in terms of nV/deg(2) and mV) of ERG waves were significantly decreased in the rings 1, 3, and 4 after VPA therapy (P < 0.05). Regarding the N1 amplitudes, the only significant decrease was observed in area 1 (P = 0.03). In addition, N1 latency was significantly increased in area 3 after VPA therapy (P = 0.04). Conclusions: VPA therapy did not have any significant benefit on BCVA and VFA. In addition, it may be associated with decline in some ERG parameters. Therefore, physicians should avoid prescribing VPA for RP until its safety and efficacy are appropriately evaluated.
Aesthetic Surgery in Transplant Patients: A Single Center Experience
(2018) Ozkan, Burak; Albayati, Abbas; Eyuboglu, Atilla Adnan; Uysal, Ahmet Cagri; Ertas, Nilgun Markal; Haberal, Mehmet; 0000-0003-3093-8369; 0000-0003-2806-3006; 0000-0002-9805-9830; 0000-0001-6236-0050; 0000-0002-3462-7632; 29528026; AAI-5063-2020; AAC-3344-2021; AIC-3493-2022; AAJ-2949-2021; AAJ-8097-2021
Objectives: Transplant patients, like the nontransplant population, can have surgical interventions for body shape disorders. Studies on aesthetic surgeries in transplant patients are scarce. Our aim was to share our experiences with various aesthetic procedures in solid-organ transplant recipients. Materials and Methods: Six (5 female, 1 male) transplant patients who received surgical corrections of the aging face, ptosis and lipodystrophy of the breast, and abdomen at the Baskent University Plastic Reconstructive and Aesthetic Surgery Department between 2010 and 2017 were included. Five patients had renal transplants, and 1 patient had liver transplant. Minimal aesthetic procedures, including botulinum toxin, dermal filler injections, and scar revisions, were excluded. All patients were consulted to transplant team preoperatively and hospitalized in the transplant inpatient clinic. Results: Mean age was 46 years. Aesthetic surgeries included breast reduction (2 patients), high suprasuperficial musculoaponeurotic system face lift (1 patient), blepharoplasty (2 patients), and dermofat grafting (1 patient). Mean hospitalization duration was 2.5 days. Four patients had no minor or major complications. One patient had skin flap necrosis, which healed with secondary intention. Another patient had ectropion after lower lid blepharoplasty, which was corrected with another procedure. Conclusions: Transplant patients are a special group of patients who receive long-term immunosuppressive treatment and medications like high-dose steroids. These treatments can lead to dermal atrophy and cause pseudo-skin laxity. Removal of excess skin and fat tissue should be considered. Efforts should be made to avoid complications such as skin necrosis and unpredictable wound healing problems when resetting the excess tissue. Preoperative consultation with transplant surgeons and keeping operative times short are other important factors. Body dysmorphologies that interfere with normal life activities and demand for younger appearance are the main reasons of aesthetic procedures. Transplant patients can be operated safely with preoperative planning, consultation with transplant surgeons, and close follow-up.
Aflatoxin Levels in Chronic Hepatitis B Patients with Cirrhosis or Hepatocellular Carcinoma in Balkesir, Turkey
(2015) Aydin, M.; Aydin, S.; Bacanli, M.; Basaran, N.; 0000-0003-4044-9366; 0000-0001-8581-8933; 0000-0002-6368-2745; 25894298; HLX-0937-2023; J-1104-2013; J-1114-2013
Aflatoxins, the secondary metabolites produced by species of naturally occurring Aspergilli, are commonly found in food such as cereals, dried fruits and juice, wine, beer and spices. They are hepatotoxic and are well known human carcinogens based on evidence from human studies. Aflatoxins are an environmental risk factor for the development of hepatocellular carcinoma (HCC). Chronic hepatitis B-infected patients are at increased risk of cirrhosis, hepatic failure and liver cancer. This study was designed to determine the serum aflatoxin B-1 (AFB(1)), aflatoxin B-2 (AFB(2)), aflatoxin G(1) (AFG(1)) and aflatoxin G(2) (AFG(2)) concentrations using high-pressure liquid chromatography (HPLC) in hepatitis B-infected patients with or without cirrhosis and liver cancer, alongside healthy controls in Balkesir, Turkey. The mean AFB(1) and total AF levels in patients without liver cancer and cirrhosis were significantly higher than healthy controls. The mean AFB(1) and total AF levels in patients with chronic hepatitis B and HCC were significantly higher than infected patients with or without cirrhosis. These results suggest that patients with chronic hepatitis B who are exposed to AFs are at increased risk for developing HCC, which might be prevented by reducing consumption of contaminated foods.
The African Variant of BKV in A Turkish Renal Transplant Patient
(2014) Colakoglu, Sule; Dursun, Hasan; Cengiz, Nurcan; Bulat, Meryem Cosar; Noyan, Aytul; https://orcid.org/0000-0002-8817-494X; 24726687; AAB-7105-2020; GPX-7059-2022; AAD-5713-2021
In renal transplant recipients, BK polyomavirus (BKV) is linked to nephropathy. BK virus genotypes have a strong geographic component. This paper presents the African variant of BKV in a Turkish renal transplant patient, which is a rare cause of infection in the Northern Hemisphere and, to our knowledge, the first case from Turkey. (C) 2014 Elsevier Inc. All rights reserved.
After a Workshop on the Novel Antivirals for Treatment of Hepatitis C Virus Infection (4-6 December 2015, Istanbul)
(2016) Tekin, Suda; Aygen, Bilgehan; Aydin, Mehtap; Simsek, Funda
Age of Majority Assessment in Dutch Individuals Based on Cameriere's Third Molar Maturity Index
(2018) Dogru, Hatice Boyacioglu; Gulsahi, Ayse; Cehreli, Sevi Burcak; Galic, Ivan; van der Stelt, Paul; Cameriere, Roberto
Radiological examination of the third molar is done in living individuals for estimation of chronological age, especially in the late adolescence. The aim of this study was to assess the application of Cameriere's third molar maturity index (I-3M) to determine whether an individual is 18 years or older (adult) or younger than 18 years (minor) in a sample of Dutch individuals. The sample consisted of panoramic images of 360 individuals aged between 14 and 22 years old. Three observers performed the measurements. Gender was not statistically significant in discriminating adults and minors. The highest value of the Youden index of the receiver operating curve analysis was for the value of I-3M < 0.08 in discriminating individuals as minor or adult. The specificity (Sp) and sensitivity (Se) results for females were 96.3% and 72.7% respectively. The Sp and Se for males were 95.0% and 84.0% respectively. The probabilities of correctly classified individuals were 83.3% and 88.9%, and Bayes post-test probability was 96.3% and 95.7% in females and males respectively. Obtained results showed that the specific cut-off point of I-3M < 0.08 may be a useful and reliable method for adult age assessment in a Dutch population. (c) 2017 Elsevier B.V. All rights reserved.
Age- and Gender-Related Variability in Nasal Tip Support
(2020) Koycu, Alper; Erol, Ozan; Buyuklu, Fuat Adnan; Jafarov, Sabuhi; Berker, Sinem; 0000-0003-1528-0036; 0000-0003-1290-3509; 0000-0002-7302-4199; 31834522; W-5941-2018; AAF-3650-2021; AAI-8044-2021
Background The age at which nasal tip support changes start to occur is unknown. Evaluation of nasal tip support is difficult, especially as the ideal nasal tip support pressure remains elusive. The aim of this study is to determine the nasal tip support pressure alterations relative to age and sex. Objectives The aim of this study is to determine the changers in resistance of the nasal tip support in relation to age and sex. Methods This prospective clinical study was conducted between January and April 2019 at a tertiary health facility. Nasal tip resistances were measured in four different age-groups (20-29, 30-39, 40-64, and > 65 years) with a digital Newton meter. A total of 159 patients with a minimum of 36 patients per group were included in the study. Nasal tip resistance measurements were compared among nasal tip displacement distances of 2, 3, and 4 mm, focusing on age and sex. Results The nasal tip resistance of the 20-29 age-group was significantly higher at 2, 3, and 4 mm nasal tip displacement distances, when compared with the 30-39 and 40-64 age-groups, whereas compared to the > 65 years group, it was significantly higher at 3 and 4 mm nasal tip displacement distances (p < 0.005). Nasal tip resistance of males was found to be significantly higher than that of females, at 3 and 4 mm nasal tip displacement distances (p < 0.001). Conclusions Nasal tip resistance is higher in males and universally decreases significantly after 30 years of age while remaining constant at later ages. Therefore, surgeons should prefer nasal tip resistance increasing techniques in the rhinoplasty operations that are performed on patients even from early years of age, in order to maintain and strengthen the nasal tip resistance.
Age-And Sex-Related Changes In Selected Hematological Parameters, Lipid Peroxidation And Erythrocytes Osmotic Fragility Of Turkish Angora Cats
(2022) Kabakci, R.; Yigit, A. A.; Kara, E.; Cinar, M.; Ekici, H.; Aluc, Y.
This study was conducted to investigate the changes in selected hematological parameters, lipid peroxidation and osmotic fragility of erythrocytes in Angora cats depending on age and gender. For this purpose, the blood samples were collected from vena saphena medialis of 9 young and 14 adult cats which were also classified as male (n=12) and female (n=11). Following hematological analysis, samples were washed with PBS by centrifugation and 10% hematocrit suspension was prepared from the erythrocytes pellet for the osmotic fragility test. The concentration of malondialdehyde (MDA) was also measured from lysed erythrocytes to determine lipid peroxidation level. Red blood cells (RBCs), hemoglobin, and hematocrit were significantly (P<0.001) high in adults while the mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) were significantly (P<0.05) high in young cats. Erythrocyte MDA level was also higher statistically (P<0.05) in adult cats than in young cats. There was no significance (P>0.05) in these parameters between male and female cats. Findings of fragility tests showed that erythrocytes of young and male cats were statistically more susceptible to hypotonic NaCl solutions than those of adult and female cats, respectively (P<0.01, P<0.05). It was concluded that erythrocytes related parameters in Angora cats changed depending on age rather than gender except for stability of RBCs.
An Aggressive Parenteral Nutrition Protocol Improves Growth in Preterm Infants
(2015) Torer, Birgin; Hanta, Deniz; Ozdemir, Zeliha; Cetinkaya, Bilin; Gulcan, Hande; 0000-0003-0055-8277; 0000-0003-0866-7339; 26701941; F-5143-2017; JMQ-5983-2023; AAF-1346-2021
Agop Handanian (1834-1899): Forensic medicine Professor in Imperial School of Medicine
(2016) Yildirim, Rifat Vedat; https://orcid.org/0000-0001-8982-7239; 24677568; JAN-9018-2023
Agreement Between Integrated Management of Childhood Illness and Final Diagnosis in Acute Respiratory Tract Infections
(2018) Yalcin, Siddika Songul; Ozdemir, Beril; Ozdemir, Sadriye; Baskin, Esra; 0000-0001-9061-4281; 0000-0003-4361-8508; 29457209; I-9331-2013; B-5785-2018
ObjectiveTo evaluate the agreement between integrated management of childhood illness (IMCI) and final diagnosis in patients presenting with cough at the second and third level health institutions.MethodsThis cross-sectional study included 373 children aged 2-60 mo who presented with cough at the pediatric emergency and outpatient clinics in the Department of Pediatrics. After clinical examination of children, body temperature, respiratory rate, saturation, presence or absence of the chest indrawing, rales, wheezing and laryngeal stridor were recorded. Cases were categorized according to IMCI algorithm regarding the severity using the color code, such as red (urgent treatment), yellow (treatment in the hospital), or green (treatment at home). Final diagnosis after physical examination, laboratory analysis and chest X-ray was compared with the IMCI algorithm.ResultsStudy agreement between IMCI classification and final diagnosis was 74.3% with kappa value 0.55 (moderate agreement). Similar agreement values were detected in both the second and third level health institutions. Health condition and gender did not affect agreement value. Agreement were found to be high in patients <24 mo of age (?=0.67), presence of fever and cough (?=0.54), tachypnea (?=0.93), chest indrawing (?=1.00) and oxygen saturation of <94%(?=0.90).ConclusionsAdding saturation level to the IMCI algorithmic diagnosis may increase agreement between IMCI classification and final diagnosis.
AI-ASSISTED Emotion Analysis During Complementary Feeding in Infants Aged 6-11 Months
(2023) Gulsen, Murat; Aydin, Beril; Gurer, Guliz; Yalcin, Siddika Songul; 37742418
This study aims to explore AI-assisted emotion assessment in infants aged 6-11 months during complementary feeding using OpenFace to analyze the Actions Units (AUs) within the Facial Action Coding system. When infants (n = 98) were exposed to a diverse range of food groups; meat, cow-milk, vegetable, grain, and dessert products, favorite, and disliked food, then video recordings were analyzed for emotional responses to these food groups, including surprise, sadness, happiness, fear, anger, and disgust. Time-averaged filtering was performed for the intensity of AUs. Facial expression to different food groups were compared with neutral states by Wilcoxon Singed test. The majority of the food groups did not significantly differ from the neutral emotional state. Infants exhibited high disgust responses to meat and anger reactions to yogurt compared to neutral. Emotional responses also varied between breastfed and non-breastfed infants. Breastfed infants showed heightened negative emotions, including fear, anger, and disgust, when exposed to certain food groups while non-breastfed infants displayed lower surprise and sadness reactions to their favorite foods and desserts. Further longitudinal research is needed to gain a comprehensive understanding of infants' emotional experiences and their associations with feeding behaviors and food acceptance.
Alcohol- and Cigarette-Use-Related Behaviors Across Gender, Dysfunctional COVID-19 Anxiety, and the Presence of Probable ADHD During the Pandemic: A Cross-Sectional Study in a Sample of Turkish Young Adults
(2021) Evren, Cuneyt; Evren, Bilge; Dalbudak, Ercan; Topcu, Merve; Kutlu, Nilay
Objective: The objective of the study is to evaluate the alcohol-and cigarette-use-related behaviors among young adults during the COVID-19 pandemic restrictions in Turkey. The second objective was to evaluate whether the gender, dysfunctional COVID-19 anxiety, and presence of probable attention-deficit/hyperactivity disorder (ADHD) are associated with the increase in alcohol consumption and cigarette smoking while controlling the effects of current age and diagnosis of anxiety disorder before the COVID-19 pandemic. Method: The study was conducted with an online survey among volunteer participants of young adults. The Adult ADHD Self Report Scale (ASRS-v1.1) and the Coronavirus Anxiety Scale (CAS) were used to evaluate a group of university students. Results: A total of 1,042 respondents (mean age 26.9 +/- 10.9 years; 61.6% female) filled out the survey. Of these, 17.6% reported an increase and 7.7% reported reduced cigarette smoking, whereas 10.8% reported an increase and 8.5% reported reduced alcohol consumption during the pandemic. Both rates of increased cigarette smoking and alcohol consumption were higher among males and those with probable ADHD. In the logistic regression analyses, male gender, COVID-19 related dysfunctional anxiety, and presence of probable ADHD were related to the increase in alcohol consumption and cigarette smoking, while the current age and diagnosis of anxiety disorder before the COVID-19 pandemic were not. Conclusion: Findings of the current study may suggest that the pandemic period is related to both anv increase and a reduction of alcohol consumption and cigarette smoking. Males with probable ADHD and higher levels of COVID-19 related dysfunctional anxiety have a higher risk of increasing both alcohol consumption and cigarette smoking.
Alexithymia is not A Good Predictor of Suicidal İdeation in Patients with Social Anxiety Disorder
(2018) Altintas, Ebru; Ozlem Kutuk, Meryem; Tufan, Ali Evren; Gozukara Bag, Harika; https://orcid.org/0000-0003-2735-4805; G-8832-2015
Objective: This study was to determine the relation between alexithymia and suicidal ideation and factors associated with suicidal ideation in patients with social anxiety disorder (SAD). Also we determined whether alexithymia is predictor of suicidal ideation related with SAD. Methods: One hundred and sixty-four SAD (n=57), panic disorder (PD) (n=58), healthy controls (HC) (n=49) subjects (according to DSM-5) were included to study. Alexithymia was measured by Toronto Alexithymia Scale-20(TAS-20), suicidal ideation was measured by Suicidal Ideation Scale (SIS), social anxiety level were evaluated with Liebowitz Social Anxiety Scale and anxiety and depression level evaluated with Beck Depression Inventory and Beck Anxiety Inventory, State and Trait Anxiety Scales. Results: Alexithymia, the rate of was found to be 38.6% in SAD patients and 29.3% in PD patients. In SAD group, significant correlation was found between TAS 20, its factors and SIS. With path analysis, it was found that TAS 20 total scores predicted SIS scores only indirectly and via their effects on trait anxiety and subjective depressive symptoms. Conclusion: In alexithymic SAD patient's suicidal ideation may occur when comorbid depression is present. Based upon the findings alexithymia may not be a good predictor of suicidal ideation for preventing suicidal attempts in patients with social anxiety disorder.
ALG1-CDG: Clinical and Molecular Characterization of 39 Unreported Patients
(2016) Alehan, Fusun; 26931382
Congenital disorders of glycosylation (CDG) arise from pathogenic mutations in over 100 genes leading to impaired protein or lipid glycosylation. ALG1 encodes a beta 1,4 mannosyltransferase that catalyzes the addition of the first of nine mannose moieties to form a dolichol-lipid linked oligosaccharide intermediate required for proper N-linked glycosylation. ALG1 mutations cause a rare autosomal recessive disorder termed ALG1-CDG. To date 13 mutations in 18 patients from 14 families have been described with varying degrees of clinical severity. We identified and characterized 39 previously unreported cases of ALG1-CDG from 32 families and add 26 new mutations. Pathogenicity of each mutation was confirmed based on its inability to rescue impaired growth or hypoglycosylation of a standard biomarker in an alg1-deficient yeast strain. Using this approach we could not establish a rank order comparison of biomarker glycosylation and patient phenotype, but we identified mutations with a lethal outcome in the first two years of life. The recently identified protein-linked xeno-tetrasaccharide biomarker, NeuAc-Gal-GlcNAc2, was seen in all 27 patients tested. Our study triples the number of known patients and expands the molecular and clinical correlates of this disorder. (C) 2016 Wiley Periodicals, Inc.
Allergen fragrance molecules: a potential relief for COVID-19
(2021) Aydin, Asli Deniz; Altinel, Faruk; Erdogmus, Hueseyin; Son, Cagdas Devrim; 0000-0002-8326-3900; 33478471; AAJ-5382-2021
BackgroundThe latest coronavirus SARS-CoV-2, discovered in China and rapidly spread Worldwide. COVID-19 affected millions of people and killed hundreds of thousands worldwide. There are many ongoing studies investigating drug(s) suitable for preventing and/or treating this pandemic; however, there are no specific drugs or vaccines available to treat or prevent SARS-CoV-2 as of today.MethodsFifty-eight fragrance materials, which are classified as allergen fragrance molecules, were selected and used in this study. Docking simulations were carried out using four functional proteins; the Covid19 Main Protase (MPro), Receptor binding domain (RBD) of spike protein, Nucleocapsid, and host Bromodomain protein (BRD2), as target macromolecules. Three different software, AutoDock, AutoDock Vina (Vina), and Molegro Virtual Docker (MVD), running a total of four different docking protocol with optimized energy functions were used. Results were compared with the five molecules reported in the literature as potential drugs against COVID-19. Virtual screening was carried out using Vina, molecules satisfying our cut-off (-6.5kcal/mol) binding affinity was confirmed by MVD. Selected molecules were analyzed using the flexible docking protocol of Vina and AutoDock default settings.ResultsTen out of 58 allergen fragrance molecules were selected for further docking studies. MPro and BRD2 are potential targets for the tested allergen fragrance molecules, while RBD and Nucleocapsid showed weak binding energies. According to AutoDock results, three molecules, Benzyl Cinnamate, Dihydroambrettolide, and Galaxolide, had good binding affinities to BRD2. While Dihydroambrettolide and Galaxolide showed the potential to bind to MPro, Sclareol and Vertofix had the best calculated binding affinities to this target. When the flexible docking results analyzed, all the molecules tested had better calculated binding affinities as expected. Benzyl Benzoate and Benzyl Salicylate showed good binding affinities to BRD2. In the case of MPro, Sclareol had the lowest binding affinity among all the tested allergen fragrance molecules.ConclusionAllergen fragrance molecules are readily available, cost-efficient, and shown to be safe for human use. Results showed that several of these molecules had comparable binding affinities as the potential drug molecules reported in the literature to target proteins. Thus, these allergen molecules at correct doses could have significant health benefits.
Alpha-Thalassemia Mutations in Adana Province, Southern Turkey: Genotype-Phenotype Correlation
(2015) Bozdogan, Sevcan Tug; Yuregir, Ozge Ozalp; Buyukkurt, Nurhilal; Aslan, Huseyin; Ozdemir, Zeynep Canan; Gambin, Tomasız; 25825562
To look over the distribution of the mutations in a large series from Adana province, Southern Turkey, and determine the genotype-phenotype correlation of the frequent mutations. Among the 2500 individuals with mild or moderate anemia, microcytosis, and normal iron levels that were referred to our Genetic Diagnosis Center, a population consisting of 539 individuals were included in the study and tested for alpha-thalassemia mutations by using reverse dot blot hybridization technique. Twelve different mutations were detected in 539 patients. Among the 12 different mutations found, the most frequent mutations were the -alpha(3.7) (63.3 %), --(MED) (11.7 %), --(20.5) (10.7 %), alpha 2(IVS1(-5nt)) (3.9 %), and alpha 2(polyA-2) (3.5 %). The most frequent genotypes were -alpha(3.7)/alpha alpha (35.8 %), -alpha(3.7)/-alpha(3.7)(18.9 %), -(20.5)/alpha alpha (11.5 %), and --(MED)/alpha alpha (10.4 %), respectively. There were statistically significant differences in hematological findings between -alpha(3.7)/-alpha(3.7) and --(MED)/alpha alpha, even though both have two mutated genes in the genotype. Our results show that alpha-thalassemia mutations are highly heterogeneous as well as deletional and -alpha(3.7) single gene deletion is particularly prevalent at Adana province in agreement to other studies from Turkey.