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https://www.readbyqxmd.com/read/29097213/mitochondrial-catalase-induces-cells-transformation-through-nucleolin-dependent-cox-2-mrna-stabilization
#1
Xin Liao, Chao Huang, Dongyun Zhang, Jingjing Wang, Jingxia Li, Honglei Jin, Chuanshu Huang
It's well documented that over-production of reactive oxygen species (ROS) causes detrimental damages to cells. While a low level of ROS, such as H2O2, functions as signaling transducer and motivates cell proliferation in both cancer and non-transformed stem cells. As a double-edged sword, the direct evidence for demonstrating the function of H2O2 in the cause of tumor is barely characterized in intact cells. In our current study, we found that targeted expression of mitochondrial catalase (mCAT), but not catalase, could significantly reduce the accumulation of H2O2 in mouse epithelial JB6 Cl41 cells, consequently led to the cell malignant transformation and anchorage-independent cell growth...
October 31, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29095170/medical-school-applicant-characteristics-associated-with-performance-in-multiple-mini-interviews-versus-traditional-interviews-a-multi-institutional-study
#2
Mark C Henderson, Carolyn J Kelly, Erin Griffin, Theodore R Hall, Anthony Jerant, Ellena M Peterson, Julie A Rainwater, Francis J Sousa, David Wofsy, Peter Franks
PURPOSE: To examine applicant characteristics associated with multi mini-interview (MMI) or traditional interview (TI) performance at five California public medical schools. METHOD: Of the five California Longitudinal Evaluation of Admissions Practices (CA-LEAP) consortium schools, three used TIs and two used MMIs. Schools provided the following retrospective data on all 2011-2013 admissions cycle interviewees: age, gender, race/ethnicity (under-represented in medicine [UIM] or not), self-identified disadvantaged (DA) status, undergraduate GPA, Medical College Admission Test (MCAT) score, and interview score (standardized as z-score, mean = 0, SD = 1)...
October 31, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/29065019/formative-assessment-in-an-integrated-curriculum-identifying-at-risk-students-for-poor-performance-on-usmle-step-1-using-nbme-custom-exam-questions
#3
Judith M Brenner, Jeffrey B Bird, Joanne M Willey
PURPOSE: The Hofstra Northwell School of Medicine (HNSOM) uses an essay-based assessment system. Recognizing the emphasis graduate medical education places on the United States Medical Licensing Examination (USMLE) Step exams, the authors developed a method to predict students at risk for lower performance on USMLE Step 1. METHOD: Beginning with the inaugural class (2015), HNSOM administered National Board of Medical Examiners (NBME) Customized Assessment Service (CAS) examinations as formative assessment at the end of each integrated course in the first two years of medical school...
November 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/29034852/comparison-of-direct-plating-and-broth-enrichment-culture-methods-for-detection-of-potential-bacterial-pathogens-in-respiratory-secretions
#4
Ravinder Kaur, Jareth Wischmeyer, Matthew Morris, Michael E Pichichero
OBJECTIVE: We compared the recovery of potential respiratory bacterial pathogens and normal flora from nasopharyngeal specimens collected from children during health and at the onset of acute otitis media (AOM) by selective direct-plating and overnight broth-enrichment. METHODS: Overall, 3442 nasal wash (NW) samples collected from young children were analysed from a 10-year prospective study. NWs were cultured by (1) direct-plating to TSAII/5 % sheep blood agar and chocolate agar plates and (2) overnight broth-enrichment in BacT/ALERT SA-broth followed by plating...
October 16, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28979178/association-between-the-medical-college-admission-test-scores-and-alpha-omega-alpha-medical-honors-society-membership
#5
Jacqueline L Gauer, J Brooks Jackson
INTRODUCTION: Medical schools worldwide are faced with the challenge of selecting from among many qualified applicants. One factor that might help admissions committees identify future exceptional medical students is scores on standardized entrance exams. The purpose of this study was to determine the association between scores on the most commonly used standardized medical school entrance exam in the USA, the Medical College Admission Test (MCAT), and election to the US medical honors society, Alpha Omega Alpha (AOA)...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28953566/in-search-of-black-swans-identifying-students-at-risk-of-failing-licensing-examinations
#6
Cassandra Barber, Robert Hammond, Lorne Gula, Gary Tithecott, Saad Chahine
PURPOSE: To determine which admissions variables and curricular outcomes are predictive of being at risk of failing the Medical Council of Canada Qualifying Examination Part 1 (MCCQE1), how quickly student risk of failure can be predicted, and to what extent predictive modeling is possible and accurate in estimating future student risk. METHOD: Data from five graduating cohorts (2011-2015), Schulich School of Medicine & Dentistry, Western University, were collected and analyzed using hierarchical generalized linear models (HGLMs)...
September 26, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28944378/treatment-of-single-and-multiple-miller-class-i-and-iii-gingival-recessions-at-crown-restored-teeth-in-maxillary-esthetic-areas
#7
Anton Sculean, Raluca Cosgarea, Christos Katsaros, Nicole Birgit Arweiler, Richard John Miron, Herbert Deppe
OBJECTIVE: To clinically evaluate the outcomes following surgical coverage of single and multiple Miller Class I and III gingival recessions at crown-restored teeth in the esthetic area by means of the modified coronally advanced tunnel (MCAT). METHOD AND MATERIALS: Eight systemically healthy patients (5 females) with a total of 23 single or multiple maxillary Miller Class I or III gingival recessions were consecutively treated with MCAT in conjunction with a subepithelial connective tissue graft (SCTG)...
September 22, 2017: Quintessence International
https://www.readbyqxmd.com/read/28901687/treatment-of-multiple-maxillary-adjacent-class-i-and-ii-gingival-recessions-with-modified-coronally-advanced-tunnel-and-a-new-xenogeneic-acellular-dermal-matrix
#8
Séverine Vincent-Bugnas, Gwenaël Borie, Yves Charbit
OBJECTIVE: To evaluate the treatment of maxillary Miller Class I and II multiple adjacent gingival recessions using the modified coronally advanced tunnel technique (MCAT) combined with a new porcine acellular dermal matrix (PADM). MATERIALS AND METHODS: Twelve patients exhibiting at least six adjacent maxillary Miller Class I and II gingival recessions were consecutively treated by means of MCAT and a PADM. Recession depth (RD), recession width (RW), probing pocket depth (PD), keratinized tissue height (KT), clinical attachment level (CAL), mean root coverage (RC), and complete root coverage (CRC) were recorded...
September 13, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28870996/vestigial-like-3-is-a-novel-ets1-interacting-partner-and-regulates-trigeminal-nerve-formation-and-cranial-neural-crest-migration
#9
Emilie Simon, Nadine Thézé, Sandrine Fédou, Pierre Thiébaud, Corinne Faucheux
Drosophila Vestigial is the founding member of a protein family containing a highly conserved domain, called Tondu, which mediates their interaction with members of the TEAD family of transcription factors (Scalloped in Drosophila). In Drosophila, the Vestigial/Scalloped complex controls wing development by regulating the expression of target genes through binding to MCAT sequences. In vertebrates, there are four Vestigial-like genes, the functions of which are still not well understood. Here, we describe the regulation and function of vestigial-like 3 (vgll3) during Xenopus early development...
October 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28817942/-the-current-status-of-diagnostic-tools-for-leptospirosis
#10
Mitsumasa Saito, Yasuhiko Nikaido, Masahiro Matsumoto, Midori Ogawa, Sharon Y A M Villanueva
Leptospirosis is a worldwide zoonosis caused by pathogenic Leptospira spp. The severity of leptospirosis vary from mild, flu-like disease to a more severe form, Weil's disease causing jaundice, hemorrhage, renal failure, and even death. Every year, 300,000‒500,000 cases of severe leptospirosis are reported around the world, with the case fatality rate being 10‒30%. The usual diagnostic tools for leptospirosis are 1) direct observation of leptospires in blood and urine under dark-field microscope, 2) isolation of leptospires from blood, cerebrospinal fluid (CSF), or urine samples by culture, 3) microscopic agglutination test (MAT) to detect anti-Leptospira antibodies in serum, and 4) PCR to detect Leptospira DNA...
August 15, 2017: JARMAM: Journal of the Association for Rapid Method and Automation in Microbiology
https://www.readbyqxmd.com/read/28817433/class-wide-access-to-a-commercial-step-1-question-bank-during-preclinical-organ-based-modules-a-pilot-project
#11
James H Baños, Mark E Pepin, Nicholas Van Wagoner
PURPOSE: The authors examined the usefulness of a commercially available Step 1 question bank as a formative academic support tool throughout organ-based modules in an integrated preclinical medical curriculum. The authors also determined the extent to which correlation between question bank utilization and academic metrics varied with Medical College Admission Test (MCAT) scores. METHOD: In 2015, a cohort of 185 first-year medical students at University of Alabama School of Medicine were provided with 18-month full access to a commercially available Step 1 question bank of over 2,100 items throughout organ-based modules, although there were no requirements for use...
August 16, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28755833/serum-antibody-response-to-moraxella-catarrhalis-proteins-in-stringently-defined-otitis-prone-children
#12
Dabin Ren, Anthony L Almudevar, Timothy F Murphy, Eric R Lafontaine, Anthony A Campagnari, Nicole Luke-Marshall, Michael E Pichichero
BACKGROUND: Moraxella catarrhalis (Mcat) is a frequent pathogen of acute otitis media (AOM) in young children. Here we prospectively assessed naturally-induced serum antibodies to four Mcat vaccine candidate proteins in stringently defined otitis prone (sOP) and non-otitis prone (NOP) children age 6-36months old following nasopharyngeal (NP) colonization, at onset of AOM and convalescence from AOM. METHODS: Serum IgG and IgM antibody against recombinant Mcat proteins, oligopeptide permease A (OppA), outer membrane protein (OMP) CD, hemagglutinin (Hag), and PilA clade 2 (PilA2), were quantitated by ELISA...
July 26, 2017: Vaccine
https://www.readbyqxmd.com/read/28689630/using-a-structural-competency-framework-to-teach-structural-racism-in-pre-health-education
#13
Jonathan M Metzl, JuLeigh Petty, Oluwatunmise V Olowojoba
The inclusion of structural competency training in pre-health undergraduate programs may offer significant benefits to future healthcare professionals. This paper presents the results of a comparative study of an interdisciplinary pre-health curriculum based in structural competency with a traditional premedical curriculum. The authors describe the interdisciplinary pre-health curriculum, titled Medicine, Health, and Society (MHS) at Vanderbilt University. The authors then use a new survey tool, the Structural Foundations of Health Survey, to evaluate structural skills and sensibilities...
June 22, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28688550/a-quality-study-of-family-centered-care-coordination-to-improve-care-for-children-undergoing-tracheostomy-and-the-quality-of-life-for-their-caregivers
#14
Christopher Hartnick, Gillian Diercks, Vanessa De Guzman, Elizabeth Hartnick, Jeanne Van Cleave, Kevin Callans
IMPORTANCE: Approximately 4000 U.S. children undergo tracheostomy yearly [1], and these surgeries often result in hospital re-admissions that have definite cost and caregiver burdens due to complications that are avoidable with proper training and support. OBJECTIVE: To assess the impact of a Family-Centered Care Coordination (FCCC) program on the quality of care received by children undergoing tracheostomy and their caregivers. DESIGN: Caregivers of children undergoing tracheostomies from January 2012 to January 2013 and then a different set of caregivers of children undergoing tracheostomies from January 2015 to January 2016 completed both the Pediatric Tracheostomy Health Status Instrument (PTHSI) 1 month after discharge and the Medical Complications Associated with Pediatric Tracheostomy (MCAT) questionnaire 6 months after initial tracheostomy...
August 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28684630/sirt3-impairment-and-sod2-hyperacetylation-in-vascular-oxidative-stress-and-hypertension
#15
Anna E Dikalova, Hana A Itani, Rafal R Nazarewicz, William G McMaster, Charles R Flynn, Roman Uzhachenko, Joshua P Fessel, Jorge L Gamboa, David G Harrison, Sergey I Dikalov
RATIONALE: Clinical studies have shown that Sirt3 (Sirtuin 3) expression declines by 40% by 65 years of age paralleling the increased incidence of hypertension and metabolic conditions further inactivate Sirt3 because of increased NADH (nicotinamide adenine dinucleotide, reduced form) and acetyl-CoA levels. Sirt3 impairment reduces the activity of a key mitochondrial antioxidant enzyme, superoxide dismutase 2 (SOD2) because of hyperacetylation. OBJECTIVE: In this study, we examined whether the loss of Sirt3 activity increases vascular oxidative stress because of SOD2 hyperacetylation and promotes endothelial dysfunction and hypertension...
August 18, 2017: Circulation Research
https://www.readbyqxmd.com/read/28678099/shifting-the-curve-fostering-academic-success-in-a-diverse-student-body
#16
Martha L Elks, Janice Herbert-Carter, Marjorie Smith, Brenda Klement, Brandi Brandon Knight, Ngozi F Anachebe
PROBLEM: Diversity in the health care workforce is key to achieving health equity. Although U.S. medical schools have worked to increase the matriculation and academic success of underrepresented minority (URM) students (African Americans, Latinos, others), they have had only limited success. Lower standardized test scores, including on the Medical College Admission Test (MCAT), have been a barrier to matriculation for many URM applicants. Lower subsequent standardized exam scores, including on the United States Medical Licensing Exam Step 1, also have been an impediment to students' progress, with mean scores for URM students lagging behind those for others...
July 3, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28646374/item-usage-in-a-multidimensional-computerized-adaptive-test-mcat-measuring-health-related-quality-of-life
#17
Muirne C S Paap, Karel A Kroeze, Caroline B Terwee, Job van der Palen, Bernard P Veldkamp
PURPOSE: Examining item usage is an important step in evaluating the performance of a computerized adaptive test (CAT). We study item usage for a newly developed multidimensional CAT which draws items from three PROMIS domains, as well as a disease-specific one. METHODS: The multidimensional item bank used in the current study contained 194 items from four domains: the PROMIS domains fatigue, physical function, and ability to participate in social roles and activities, and a disease-specific domain (the COPD-SIB)...
November 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28596373/mitochondrial-oxidative-stress-promotes-atherosclerosis-and-neutrophil-extracellular-traps-in-aged-mice
#18
Ying Wang, Wei Wang, Nan Wang, Alan R Tall, Ira Tabas
RATIONALE: Mitochondrial oxidative stress (mitoOS) has been shown to be increased in various cell types in human atherosclerosis and with aging. However, the role of cell type-specific mitoOS in atherosclerosis in the setting of advanced age and the molecular mechanisms remains to be determined in vivo. OBJECTIVE: The aim of this study was to examine the role of myeloid cell mitoOS in atherosclerosis in aged mice. APPROACH AND RESULTS: Lethally irradiated low-density lipoprotein receptor-deficient mice (Ldlr(-/-)) were reconstituted with bone marrow from either wild-type or mitochondrial catalase (mCAT) mice...
August 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28573595/developing-and-evaluating-an-innovative-structural-competency-curriculum-for-pre-health-students
#19
JuLeigh Petty, Jonathan M Metzl, Mia R Keeys
The inclusion of structural competency training in pre-health undergraduate programs may offer significant benefits to future healthcare professionals. This paper presents the results of a comparative study of an interdisciplinary pre-health curriculum based in structural competency with a traditional premedical curriculum. The authors describe a new evaluation tool, the Structural Foundations of Health Survey © (2016), developed to evaluate structural skills and sensibilities. The authors use the survey to evaluate two groups of graduating seniors at Vanderbilt University-majors in an interdisciplinary pre-health curriculum titled Medicine, Health, and Society (MHS), and premed science majors-with particular attention to understanding how political, cultural, economic, and social factors shape health...
June 1, 2017: Journal of Medical Humanities
https://www.readbyqxmd.com/read/28526873/role-of-s-palmitoylation-by-zdhhc13-in-mitochondrial-function-and-metabolism-in-liver
#20
Li-Fen Shen, Yi-Ju Chen, Kai-Ming Liu, Amir N Saleem Haddad, I-Wen Song, Hsiao-Yuh Roan, Li-Ying Chen, Jeffrey J Y Yen, Yu-Ju Chen, Jer-Yuarn Wu, Yuan-Tsong Chen
Palmitoyltransferase (PAT) catalyses protein S-palmitoylation which adds 16-carbon palmitate to specific cysteines and contributes to various biological functions. We previously reported that in mice, deficiency of Zdhhc13, a member of the PAT family, causes severe phenotypes including amyloidosis, alopecia, and osteoporosis. Here, we show that Zdhhc13 deficiency results in abnormal liver function, lipid abnormalities, and hypermetabolism. To elucidate the molecular mechanisms underlying these disease phenotypes, we applied a site-specific quantitative approach integrating an alkylating resin-assisted capture and mass spectrometry-based label-free strategy for studying the liver S-palmitoylome...
May 19, 2017: Scientific Reports
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