Digital Commons Network^™

Application Of Hemoperfusion In Severe Acute Organophosphorus Pesticide Poisoning, Zhenhe Li, Guixia Wang, Guodong Zhen, Yuliang Zhang, Jiaqiang Liu, Shanmei Liu

Turkish Journal of Medical Sciences

Background/aim: The aim of this research is to investigate the clinical efficacy of hemoperfusion in the treatment of severe acute organophosphorus pesticide poisoning (AOPP). Materials and methods: Patients meeting the inclusion criteria were divided into Groups 1 and 2 according to whether hemoperfusion was applied or not. Group 2 was observed as the control group. Conventional therapy for AOPP was given to Groups 1 and 2. Besides conventional treatment, patients in Group 1 were also treated with hemoperfusion therapy. Cholinesterase activity and blood glucose concentration were tested before hemoperfusion and for the first 3 days afterwards. The recovery time of …

Biomarker And Shear Stress In Secondary Pediatric Pulmonary Hypertension, Ayhan Pektaş, Fatma Rana Olguntürk, Serdar Kula, Erman Çi̇lsal, Ayşe Deni̇z Oğuz, Fatma Sedef Tunaoğlu

Turkish Journal of Medical Sciences

Background/aim: Endothelial dysfunction, tissue damage, inflammation, and microthrombosis are involved in the pathogenesis of pulmonary hypertension (PH), which may be present as a complication of congenital heart diseases. This study aims to identify how indicators of endothelial dysfunction (shear stress), tissue damage (brain natriuretic peptide and troponin T), inflammation (C-reactive protein (CRP)), and microthrombosis (D-dimer and von Willebrand factor) are altered in children with congenital left-to-right shunting. Materials and methods: This is a review of 25 children who developed PH due to congenital left-to-right shunting, 40 children who underwent corrective surgery for congenital left-to-right shunting, and 40 healthy children.Results: Serum …

Effect Of Transfusion Of Washed Red Blood Cells On Serumpotassium Level In Hemodialysis Patients, Refi̇k Demi̇rtunç, Emel Üstün, Cumali̇ Karatoprak, Kadi̇r Kayataş, Fuat Çeti̇nkaya, Uğur Özensoy, Rümeyza Kazancioğlu

Turkish Journal of Medical Sciences

Background/aim: This study aimed to compare washed red blood cell (WRBC) transfusion versus nonwashed RBC (NWRBC) transfusion in terms of posttransfusion potassium levels in dialysis patients on a day when the patient did not receive dialysis. Materials and methods: The patients were randomly assigned into two groups, i.e. those receiving WRBCs (n = 21) and those receiving NWRBCs (n = 17). Both groups received one unit of RBCs. Serum potassium and sodium levels were measured before and at the 1st, 2nd, 3rd, 4th, and 6th hours after transfusion. Results: In the WRBC group, the changes in the serum potassium levels …

Harnessing The Power Of Cell Transplantation To Target Respiratory Dysfunction Following Spinal Cord Injury., Brittany A. Charsar, Mark W. Urban, Angelo C. Lepore

Department of Neuroscience Faculty Papers

The therapeutic benefit of cell transplantation has been assessed in a host of central nervous system (CNS) diseases, including disorders of the spinal cord such as traumatic spinal cord injury (SCI). The promise of cell transplantation to preserve and/or restore normal function can be aimed at a variety of therapeutic mechanisms, including replacement of lost or damaged CNS cell types, promotion of axonal regeneration or sprouting, neuroprotection, immune response modulation, and delivery of gene products such as neurotrophic factors, amongst other possibilities. Despite significant work in the field of transplantation in models of SCI, limited attention has been directed at …

Assessment Of Developmental And Radiological Long-Term Outcomeof Children With Surgically Treated Midgut Volvulus, Ahmet Murat Çakmak, Özlem Boybeyi̇ Türer, Gülnur Göllü Bahadir, Bi̇lge Türedi̇, Ufuk Ateş, Adalet Elçi̇n Yildiz, Gonul Kucuk, Ömer Suat Fi̇toz, Betül Ulukol, Mustafa Kemal Aslan, Tutku Soyer, Hüseyi̇n Di̇ndar

Turkish Journal of Medical Sciences

Background/aim: The aim is to evaluate the long-term outcome of asymptomatic patients who underwent surgical correction for midgut volvulus. Materials and methods: Seven patients managed surgically for midgut volvulus in the last 3 years were included. Demographic features, symptoms at presentation, diagnoses, surgical procedures, and complications were recorded. Patients were then contacted for followup and evaluation of long-term outcomes. General physical conditions, anthropometric parameters, feeding habits, and defecation histories were evaluated. Laboratory examinations were performed. Color Doppler ultrasonography (CDUS) was performed to evaluate blood flow in the superior mesenteric artery (SMA). Results: In total, seven patients were identified. The median …

Analysis Of Epidemiology And Risk Factors For Mortality In Ventilator-Associated Pneumonia Attacks In Intensive Care Unit Patients, Ayşe But, Meltem Arzu Yetki̇n, Di̇lek Kanyilmaz, Hali̇de Aslaner, Ali̇ye Baştuğ, Adalet Aypak, Pinar Öngürü, Esragül Akinci, Nevzat Mehmet Mutlu, Hurrem Bodur

Turkish Journal of Medical Sciences

Background/aim: The aim of this study was to investigate the epidemiologic characteristics, the causative microorganisms and their antimicrobial susceptibility patterns, and the prognostic risk factors for mortality in critically ill patients with ventilator-associated pneumonia (VAP). Materials and methods: In this retrospective observational study, all the critically ill patients with VAP hospitalized in a medical/surgical intensive care unit (ICU) between January 2010 and June 2015 were evaluated. Patients' demographic features and microbiological data were reviewed. Results: A total of 417 patients were clinically diagnosed with VAP; 51.1% of them were male and the average age was found as 69.9 ± 15.9 …

The Prevalence Of Abdominal Obesity Is Remarkable For Underweightand Normal Weight Adolescent Girls, Ni̇lüfer Tek, Nevi̇n Şanlier, Duygu Türközü

Turkish Journal of Medical Sciences

Background/aim: Obesity is a global public health challenge. This study was carried out in order to determine the prevalence of obesity and abdominal obesity in Turkish adolescent girls. Materials and methods: A cross-sectional study was conducted in a total of 1111 adolescent girls aged 12?18 years. The subjects were classified into four groups: underweight, normal, overweight, and obese. Abdominal obesity was defined according to waist circumference (WC) $\geq$ 90th percentile for Turkish adolescent population references (12-17 years) and waist-to-height ratio (WHtR) $\geq$ 0.5. Results: The prevalence of underweight was 17.4%, normal weight 68.5%, overweight 12.1%, and obese 2.0%. A total …

Prevention Of Propofol Injection-Related Pain Using Pretreatment Transcutaneous Electrical Acupoint Stimulation, Luping Huang, Yuanyuan Pan, Sijia Chen, Minyuan Zhang, Xiuxiu Zhuang, Shenhui Jin, Junlu Wang, Qinxue Dai, Yunchang Mo

Turkish Journal of Medical Sciences

Background/aim: This study aimed to study the effect of pretreatment transcutaneous electrical acupoint stimulation (TEAS) in preventing propofol injection-related pain. Materials and methods: A total of 360 patients who were to undergo elective hysteroscopy surgery were randomly divided into the following three groups of 120 patients each: control (Group C), sham TEAS (Group F), and TEAS (Group T). Patients in Group C did not undergo any treatment before surgery; 30 min before the induction of anesthesia, patients in Groups F and T underwent electrical stimulation of the bilateral LI4-PC6 acupoint. Patients in Group F were subjected to 'feeling flow', while …

Sex-Related Differences In The Efficacy Of Dexamethasone Pretreatmentfor Postoperative Analgesia In Patients Undergoing Laparoscopiccholecystectomy: A Randomized Controlled Study, Choel Lee, Jae-Yoon Chung, Myeongjong Lee

Turkish Journal of Medical Sciences

Background/aim: Sex-related differences in response to pain have become a topic of increasing interest. However, sex-related differences in the efficacy of dexamethasone for postoperative analgesia have not been previously addressed. Materials and methods: The study included 196 men and 196 women, aged between 18 and 45 years, who were scheduled for laparoscopic cholecystectomy. The patients were randomly allocated into dexamethasone (M/F: 98/98) and control (normal saline; M/F: 98/98) groups. Patients in the study group received intravenous dexamethasone at 0.1 mg/kg (dexamethasone group) 1 h before induction of anesthesia. Patients in the control group received normal saline. Changes in cumulative morphine-containing, …

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 …

Unknown Vascular Compression Of The Airway In Patients With Congenitalheart Disease And Persistent Lower Respiratory Symptoms, Tuğba Şi̇şmanlar Eyüboğlu, Ayşe Tana Aslan, Çi̇ğdem Öztunali, Fatma Sedef Tunaoğlu, Ayşe Deni̇z Oğuz, Serdar Kula, Betül Emi̇ne Deri̇nkuyu, Öznur Leman Boyunaga

Turkish Journal of Medical Sciences

Background/aim: Airway compression (AC) by vascular structures is an important complication of congenital heart disease (CHD) that often goes unrecognized. It is not easy to identify whether CHD patients require additional invasive examinations or not. Therefore, the present study aims to develop an AC diagnostic algorithm for CHD patients. Materials and methods: CHD patients with persistent respiratory symptoms that were treated between January 2007 and December 2015 were retrospectively reviewed. The following data were recorded for all CHD patients with AC: age, cardiac anomalies, the compressed structure, the airway diameter ratio (ADR), the compressing structure(s), treatment, and follow-up.Results: During the …

Efficacy Of Bispectral Index Monitoring For Prevention Of Anestheticawareness And Complications During Oocyte Pick-Up Procedure, Aykut Urfalioğlu, Mahmut Arslan, Süleyman Murat Bakacak, Hafi̇ze Öksüz, Ömer Faruk Boran, Gözen Öksüz

Turkish Journal of Medical Sciences

Background/aim: This study was planned by considering that the use of bispectral index (BIS) monitoring ensures sufficient depth of anesthesia and avoids anesthetic awareness and patient movement in the oocyte pick-up (OPU) procedure.Materials and methods: Ninety-eight patients undergoing OPU were randomly divided into 2 groups as the control group (n = 48) and BIS group (n = 50). After propofol and remifentanil induction, the control group was given additional propofol according to reaction response, while the BIS group was given propofol at BIS values of 60 and above with the aim that BIS values be 40?60. Total procedure time, recovery …

Comparing The Effectiveness Of Ultrasound-Guided Versus Blind Steroid Injection In The Treatment Of Severe Carpal Tunnel Syndrome, Özgür Zeli̇ha Karaahmet, Eda Gürçay, Murat Kara, Azi̇ze Serçe, Zeynep Kiraç Ünal, Fatma Aytül Çakci

Turkish Journal of Medical Sciences

Background/aim: This study aimed to compare the effectiveness of ultrasound (US)-guided injection versus blind injection of corticosteroids in the treatment of carpal tunnel syndrome (CTS). Materials and methods: This prospective, randomized clinical trial included patients with severe CTS based on clinical and electrophysiological criteria. The patients were evaluated for clinical and electrophysiological parameters at baseline and 4 weeks after treatment. Symptom severity and hand function were assessed by the Boston questionnaire. The patients underwent blind injection or US-guided injection. Results: When compared with baseline, both groups showed significant improvement in Boston questionnaire scores and all electrophysiological parameters. Significant differences were …

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 …

Isolation And Culture Of Adult Mouse Vestibular Nucleus Neurons, Aydin Hi̇m, Serap Altuntaş, Gürkan Öztürk, Ender Erdoğan, Nureddi̇n Cengi̇z

Turkish Journal of Medical Sciences

Background/aim: Isolated cell cultures are widely used to study neuronal properties due to their advantages. Although embryonic animals are preferred for culturing, their morphological or electrophysiological properties may not reflect adult neurons, which may be important in neurodegenerative diseases. This paper aims to develop a method for preparing isolated cell cultures of medial vestibular nucleus (MVN) from adult mice and describe its morphological and electrophysiological properties.Materials and methods: Vestibular nucleus neurons were mechanically and enzymatically isolated and cultured using a defined medium with known growth factors. Cell survival was measured with propidium iodide, and electrophysiological properties were investigated with current-clamp …

Abdominal Actinomycosis In The Last 10 Years And Risk Factors For Appendiceal Actinomycosis: Review Of The Literature, Marta Lisa-Gracia, Berta Martín-Rivas, Marcos Pajaron-Guerrero, Ana Arnaiz-García

Turkish Journal of Medical Sciences

Background/aim: Actinomycosis is a granulomatous disease caused by filamentous, gram-positive, anaerobic bacteria. Actinomycetes are commensal inhabitants of the oral cavity and intestinal tract but acquire pathogenicity through invasion of breached or necrotic tissue. In abdominal actinomycosis (AA), the appendix and ileocecal region are usually involved. The aim of this study was to characterize patients diagnosed with AA and to establish the risk factors for appendiceal actinomycosis, including a short review of the literature. Materials and methods: We conducted a prospective cohort study of all patients diagnosed with AA in the University Hospital Marques de Valdecilla (Santander-Cantabria) from January 2003 to …

Cardiac Mri And 3d Contrast-Enhanced Mr Angiography In Pediatric And Young Adult Patients With Turner Syndrome, Hasan Yi̇ği̇t, Aşan Önder, Senem Özgür, Zehra Aycan, Selmi̇n Karademi̇r, Vehbi̇ Doğan

Turkish Journal of Medical Sciences

Background/aim: This study aimed to describe the spectrum and frequency of cardiovascular abnormalities in pediatric and young adult patients with Turner syndrome (TS) using cardiac MRI and MR angiography. Materials and methods: This prospective study consisted of 47 female patients of pediatric age and young adults with a karyotypically confirmed diagnosis of TS. All patients underwent cardiac MRI and contrast-enhanced MR angiography. A second examination after 9-26 months was performed for 28 of these patients. Results: Elongation of the transverse aortic arch (ETA) was the most frequent abnormality with a rate of 37%. The rate of partial anomalous pulmonary venous …

Fecal Carriage Of Extended-Spectrum Beta-Lactamase-Producing Escherichia Coli And Klebsiella Spp. In A Turkish Community, Derya Çakir Erdoğan, Füsun Cömert, Eli̇f Aktaş Sepetci̇, Fürüzan Köktürk, Canan Külah

Turkish Journal of Medical Sciences

Background/aim: The aim of this study was to determine the prevalence of fecal carriage of extended-spectrum beta-lactamase (ESBL)-producing bacteria, enzyme types, and risk factors affecting colonization. Materials and methods: A total of 576 stool samples from outpatients were examined between October 2012 and May 2013. Screening was done with selective EMB plates. ESBL were detected by double-disk synergy and confirmed agar strip gradient methods. Enzyme types were determined by PCR. Results: The prevalence of fecal carriage was found as 30% (173 of 576). Recent use of antibiotics, hospitalization and surgical operation, diabetes, crowded household populations, and old age were associated …

The Prevalence Of Coronary Artery Anomalies With Coronary Computed Tomography, Hakki Yeşi̇lyurt, Uğur Aksu, Kamuran Kalkan, Seli̇m Topcu, Enbi̇ya Aksakal, İbrahi̇m Hali̇l Tanboğa, Recep Sade, Fati̇h Rifat Ulusoy, Abdulmeci̇t Kantarci

Turkish Journal of Medical Sciences

Background/aim: In this study, the aim is to investigate the prevalence of various coronary artery anomalies (CAAs), evaluated by 256-detector row coronary computed tomography (CCT), within the Turkish population. Materials and methods: We included 2973 patients who had received CCT. The high take-off right coronary artery (RCA) and left coronary artery (LCA), the RCA arising from the left sinus (LS), the LCA arising from the right sinus (RS), the circumflex artery (CX) arising from the RS, the single coronary ostium originating from the RS, the CX arising from the RCA, and the RCA arising from the pulmonary artery were evaluated. …

The Role Of Oxidative Stress In α-Amanitin-Induced Hepatotoxicityin An Experimental Mouse Model, Zerri̇n Defne Dündar, Mehmet Ergi̇n, İbrahi̇m Kilinç, Tamer Çolak, Pembe Oltulu, Başar Cander

Turkish Journal of Medical Sciences

Background/aim: This study aimed to evaluate oxidative stress markers of liver tissue in a mouse α-amanitin poisoning model with three different toxin levels. Materials and methods: The mice were randomly divided into Group 1 (control), Group 2 (0.2 mg/kg), Group 3 (0.6 mg/kg), and Group 4 (1.0 mg/kg). The toxin was injected intraperitoneally and 48 h of follow-up was performed before sacrifice. Results: Median superoxide dismutase activities of liver tissue in Groups 3 and 4 were significantly higher than in Group 1 (for both, P = 0.001). The catalase activity in Group 2 was significantly higher, but in Groups 3 …

A New Angiogenesis Prognostic Index With Vegfa, Plgf, And Angiopoietin1 Predicts Survival In Patients With Advanced Gastric Cancer, Sedef Hande Aktaş, Hakan Akbulut, Ozan Yazici, Nurullah Zengi̇n, Hali̇me Nalan Akgün, Zeki̇ Üstüner, Fi̇kri̇ İçli̇

Turkish Journal of Medical Sciences

Background/aim: The role of angiogenic factors in gastric cancer is not clear. We aimed to assess the role of vascular endothelial growth factor A (VEGFA), angiopoietin 1 (Ang-1), and placental growth factor (PlGF) in the prognosis of patients with advanced gastric cancer. Materials and methods: Thirty consecutive patients treated with a modified DCF (docetaxel, cisplatin, and fluorouracil) regimen were included in the study. The plasma VEGFA, Ang-1, and PlGF levels of the patients before treatment and following two cycles of chemotherapy were measured and evaluated as prognostic factors. Results: Poor performance status and lower Ang-1 levels were correlated with poor …

Attitudes, Wishes, And Needs Of Diabetes Patients And Their Relatives: Turkish Data Fromthe Dawn2 Study, İlhan Tarkun, Suzan Dumanli Özgöksu

Turkish Journal of Medical Sciences

Background/aim: The DAWN2 (Diabetes Attitudes, Wishes, and Needs) study was conducted in order to ascertain the wishes, needs, and attitudes of diabetes patients, their relatives, and healthcare professionals. The study was conducted across 17 countries, including Turkey, and its objective was to introduce policies that could successfully meet these requirements. In this article, the needs, wishes, and attitudes of diabetes patients and their relatives in Turkey are compared with those from other countries. Materials and methods: Eighty patients with type 1 diabetes, 426 patients with type 2 diabetes, and 126 relatives of patients with diabetes were included in the study. …

An Iterative Bézier Method For Fitting Beta-Sheet Component Of A Cryo-Em Density Map, Michael Poteat, Jing He

Computer Science Faculty Publications

Cryo-electron microscopy (Cryo-EM) is a powerful technique to produce 3-dimensional density maps for large molecular complexes. Although many atomic structures have been solved from cryo-EM density maps, it is challenging to derive atomic structures when the resolution of density maps is not sufficiently high. Geometrical shape representation of secondary structural components in a medium-resolution density map enhances modeling of atomic structures. We compare two methods in producing surface representation of the β-sheet component of a density map. Given a 3-dimensional volume of β-sheet that is segmented from a density map, the performance of a polynomial fitting was compared with that …

การประเมินความเสี่ยงต่อการถูกเครื่องกระตุกหัวใจช็อค โดยอาศัยค่า T-Peak To T-End จากคลื่นไฟฟ้าหัวใจในกลุ่มผู้ป่วยโรคใหลตาย, ภัทราณี ลีละพัฒนะ

Chulalongkorn University Theses and Dissertations (Chula ETD)

ที่มา: การประเมินความเสี่ยงว่าผู้ป่วยโรคใหลตายลักษณะใดจะเกิดภาวะหัวใจห้องล่างเต้นผิดจังหวะชนิด ventricular tachycardia/ventricular fibrillation; VT/VF มีความสำคัญมาก แต่ปัจจุบันยังทำได้ไม่สมบูรณ์ การศึกษาก่อนหน้านี้พบว่าค่า T-peak to T- end จากบนคลื่นไฟฟ้าหัวใจที่ยาวมีความสัมพันธ์กับการเกิด VT/VF จุดประสงค์: เพื่อศึกษาหาค่า TpTe ลักษณะทางคลื่นไฟฟ้าหัวใจ และปัจจัยทางคลินิก ที่เพิ่มความเสี่ยงต่อการเกิดเครื่องกระตุกหัวใจช็อค (appropriate ICD shock) ในผู้ป่วยโรคใหลตาย ระเบียบวิธีวิจัย: เป็นงานวิจัยแบบย้อนหลังในผู้ป่วยโรคใหลตายที่ได้รับการใส่เครื่องกระตุกหัวใจ ที่เข้ารับการรักษาในโรงพยาบาลจุฬาลงกรณ์ สภากาชาดไทย ตั้งแต่ปี พ.ศ.2540-2560 พบว่ามีผู้ป่วยโรคใหลตาย 32 ราย (ชาย 96.9%, อายุเฉลี่ย 37 ± 12.7 ปี) เป็นผู้ที่ได้รับการใส่เครื่องกระตุกหัวใจเพื่อป้องกันระดับปฐมภูมิ (primary prevention) 3 ราย (9.4%) ได้รับการใส่เครื่องเนื่องจากเคยเป็นลมหมดสติ 12 ราย (37.5%) และได้รับการใส่เครื่องกระตุกหัวใจเนื่องจากเคยหัวใจหยุดเต้น 17 ราย (53.1%) จากนั้นจึงทำการศึกษาข้อมูลอันได้แก่ ลักษณะทางคลินิก ลักษณะทางคลื่นไฟฟ้าหัวใจ รวมถึงค่า T-peak to T- end ที่ได้วัดจาก lead V2 เพื่อประเมินความเสี่ยงต่อการถูกเครื่องกระตุกหัวใจช็อค ผลการศึกษา: เมื่อติดตามไป 7.3 ± 4.9 ปี พบว่ามีเครื่องกระตุกหัวใจช็อค 313 ครั้ง เกิดในผู้ป่วย 13 ราย (40.6%) พบว่าผู้ป่วยที่เคยหัวใจหยุดเต้นจาก VT/VF มีความสัมพันธ์กับการถูกเครื่องกระตุกหัวใจช็อค [odds ratio (OR) = 4.85, confidence interval (CI) = 1.3-18.5, p=0.025] และ ค่า T-peak to T-end จะยาวกว่าอย่างมีนัยสำคัญทางสถิติในกลุ่มที่ถูกเครื่องช็อค …

Effects Of Estrogens On Astrocytes Exposed To Stressors, Bridget N. Smith

Theses and Dissertations

Hormone replacement therapy (HRT), used by many women to alleviate menopausal symptoms such as hot flashes and mood swings, is often a combination of horomones such as estrogens, progesterone, and conjugated equine estrogens (CEE), extracted from the urine of pregnant mares. Previous studies have found positive correlations between estradiol and cellular protection, but recent research has concluded CEE provide less protective mechanisms as compared to endogenous hormones. This research sought to compare the effects of estrogen treatments (single and combined estrogen) on viability when astrocytes were induced with stressors (epinephrine, cortisol, and low oxygen concentration). Cultured human astrocytes were treated …

Meta Analysis Of Human Alzgene Database: Benefits And Limitations Of Using C. Elegans For The Study Of Alzheimer's Disease And Co-Morbid Conditions, Behrad Vahdati Nia, Christine Kang, Michelle G. Tran, Deborah Lee, Shin Murakami

Faculty Publications & Research of the TUC College of Osteopathic Medicine

Human genome-wide association studies (GWAS) and linkage studies have identified 695 genes associated with Alzheimer's disease (AD), the vast majority of which are associated with late-onset AD. Although orthologs of these AD genes have been studied in several model species, orthologs in the nematode, Caenorhabditis elegans, remain incompletely identified, with orthologs to only 17 AD-related genes identified in the C. elegans database, WormBase. Therefore, we performed a comprehensive search for additional C. elegans orthologs of AD genes using well-established programs, including OrthoList, which utilizes four ontology prediction programs. We also validated 680 of the AD genes as a unique …

Should Genetic Testing Be Recommended For Long Qt Syndrome Patients And Their Relatives?, Menachem Braun

The Science Journal of the Lander College of Arts and Sciences

No abstract provided.

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 …

The Unconventional Secretion Of Alpha-Synuclein By Autophagic Mechanisms And The Novel Characterization Of Pathological Alpha-Synuclein Associated Extracellular Vesicles, Kevin Burbidge

Master's Theses

Synucleinopathies are a group of neurodegenerative diseases associated with the intracellular accumulation of aggregated α-synuclein, a neurotoxic process resulting in cell death. Research indicates that pathology results from α-synuclein misfolding and self-propagation, as well as, cell-to-cell transmission. Furthermore, pathological α-synuclein transmission may occur through unconventional secretion.

In this thesis, we investigated how autophagy influences unconventional secretion of our novel α-synuclein dual-split protein model that we first verified by reproducing documented results from treatment of known autophagic regulators. Afterwards, we investigated how knocking out autophagic proteins ATG7 and Beclin-1 influenced α-synuclein secretion.

Additionally, we developed a methodology for analyzing extracellular vesicles …

Decellularized Wharton's Jelly From Human Umbilical Cord As A Novel 3d Scaffolding Material For Tissue Engineering Applications., Sushma Jadalannagari, Gabriel Converse, Eric Buse, Michael Filla, Maria T. Villar, Antonio Artigues, Adam J. Mellot, Jinxi Wang, Michael S. Detamore, Richard A. Hopkins, Omar S. Aljitawi, C Mcfall

Manuscripts, Articles, Book Chapters and Other Papers

In tissue engineering, an ideal scaffold attracts and supports cells thus providing them with the necessary mechanical support and architecture as they reconstruct new tissue in vitro and in vivo. This manuscript details a novel matrix derived from decellularized Wharton's jelly (WJ) obtained from human umbilical cord for use as a scaffold for tissue engineering application. This decellularized Wharton's jelly matrix (DWJM) contained 0.66 ± 0.12 μg/mg sulfated glycosaminoglycans (GAGs), and was abundant in hyaluronic acid, and completely devoid of cells. Mass spectroscopy revealed the presence of collagen types II, VI and XII, fibronectin-I, and lumican I. When seeded onto …