Public Health Commons^™

Aflatoxin B1 Albumin Adducts In Plasma And Aflatoxin M1 In Urine Are Associated With Plasma Concentrations Of Vitamins A And E, Francis A. Obuseh, Pauline E. Jolly, Yi Jiang, Faisal M. B. Shuaib, John Waterbor, William O. Ellis, Chandrika J. Piyathilake, Renee A. Desmond, Evans Afriyie-Gyawu, Timothy D. Phillips

Evans Afriyie-Gyawu

Background: Although aflatoxin exposure has been shown to be associated with micronutrient deficiency in animals, there are few investigations on the effects of aflatoxin exposure on micronutrient metabolism in humans.
Objective: To examine the relationship between aflatoxin B1 (AFB1) albumin adducts (AF-ALB) in plasma and the aflatoxin M1 (AFM1) metabolite in urine and plasma concentrations of retinol (vitamin A) and α-tocopherol (vitamin E) in Ghanaians.
Methods: A cross-sectional study of 147 adult participants was conducted. Blood and urine samples were tested for aflatoxin and vitamins A and E levels.
Results: Multivariable analysis showed that participants with high AF-ALB (≥ 0.80 …

Comparison Of Bacteroides Human Markers For Pollution Diagnostics In Recreational Waters, Asli Aslan, Joan B. Rose

Environmental Health Sciences Faculty Presentations

This presentation was given during the Great Lakes Beach Association Annual Conference.

A Maximum Pseudo-Likelihood Approach For Estimating Species Trees Under The Coalescent Model, Liang Liu, Lili Yu, Scott V. Edwards

Biostatistics Faculty Publications

Background

Several phylogenetic approaches have been developed to estimate species trees from collections of gene trees. However, maximum likelihood approaches for estimating species trees under the coalescent model are limited. Although the likelihood of a species tree under the multispecies coalescent model has already been derived by Rannala and Yang, it can be shown that the maximum likelihood estimate (MLE) of the species tree (topology, branch lengths, and population sizes) from gene trees under this formula does not exist. In this paper, we develop a pseudo-likelihood function of the species tree to obtain maximum pseudo-likelihood estimates (MPE) of species trees, …

Drive Alive: Teen Seat Belt Survey Program, Katie M. Burkett, Steve Davidson, Carol Cotton, James Barlament, Laurel Loftin, James H. Stephens, Martin Dunbar, Ryan Butterfield

Health Policy and Management Faculty Publications

Objective: To increase teen seat belt use among drivers at a rural high school by implementing the Drive Alive Pilot Program (DAPP), a theory-driven intervention built on highway safety best practices.

Methods: The first component of the program was 20 observational teen seat belt surveys conducted by volunteer students in a high school parking lot over a 38-month period before and after the month-long intervention. The survey results were published in the newspaper. The second component was the use of incentives, such as gift cards, to promote teen seat belt use. The third component involved disincentives, such as increased police …

Overview Of The Essential Tremor, Theresa A. Zesiewicz, Abinaya Chari, Israt Jahan, Amber M. Miller, Kelly L. Sullivan

Kelly L. Sullivan

Essential tremor (ET) is one of the most common movement disorders in the world. Despite this, only one medication (propranolol) is approved by the Food and Drug Administration (FDA) to treat it. Fortunately, recent studies have identified some additional medications as treatment of ET. Surgical procedures, such as deep brain stimulation of the ventral intermediate nucleus of the thalamus, offer treatment for refractory tremor. The epidemiology, pathogenesis, and medical and surgical treatment of ET will be discussed in this paper.

Hiv And Hepatocellular And Esophageal Carcinomas Related To Consumption Of Mycotoxin-Prone Foods In Sub-Saharan Africa, Jonathan H. Williams, Jessica A. Grubbs, Jerry W. Davis, Jia-Sheng Wang, Pauline E. Jolly, Nii-Ayi Ankrah, William O. Ellis, Evans Afriyie-Gyawu, Natalie M. Johnson, Abraham G. Robinson, Timothy D. Phillips

Environmental Health Sciences Faculty Publications

Background: Promotion of the HIV epidemic by aflatoxin is postulated but not yet established. Sub-Saharan populations commonly consume food contaminated by mycotoxins, particularly aflatoxins (predominantly found in peanut, maize, rice, and cassava) and fumonisins, which occur primarily in maize. Aflatoxin promotes hepatocellular cancer, and fumonisin may promote esophageal cancer.

Objectives: This analysis was undertaken to test the hypotheses that consumption of mycotoxin-prone staple foods is 1) related to the incidence of HIV infection in Africa and 2) related to “signature” cancer rates confirming exposure to aflatoxins and fumonisins.

Design: World Health Organization data for causes of death and the Food …

Interventions To Improve Excreta Disposal For Preventing Diarrhoea, Thomas F. Clasen, Kristof Bostoen, Wolf-Peter Schmidt, Sophie Boisson, Isaac Chun-Hai Fung, Marion W. Jenkins, Beth Scott, Steven Sugden, Sandy Cairncross

Isaac Chun-Hai Fung

Background: Diarrhoeal diseases are a leading cause of mortality and morbidity, especially among young children in low-income countries, and are associated with exposure to human excreta.
Objectives: To assess the effectiveness of interventions to improve the disposal of human excreta for preventing diarrhoeal diseases.
Search Strategy: We searched the Cochrane Infectious Disease Group Specialized Register; the Cochrane Central Register of Controlled Trials (CENTRAL), published in The Cochrane Library; MEDLINE; EMBASE; LILACS; the metaRegister of Controlled Trials (mRCT); and Chinese-language databases available under the Wan Fang portal, and the China National Knowledge Infrastructure (CNKI-CAJ). We also handsearched relevant conference proceedings, and …

Reduction Of Circulating Endothelial Cells In Peripheral Blood Of Als Patients, Svitlana Garbuzova-Davis, Robert L. Woods Iii, Michael K. Louis, Theresa A. Zesiewicz, Nicole Kuzmin-Nichols, Kelly L. Sullivan, Amber M. Miller, Diana G. Hernandez-Ontiveros, Paul R. Sanberg

Kelly L. Sullivan

Background: Amyotrophic Lateral Sclerosis (ALS) treatment is complicated by the various mechanisms underlying motor neuron degeneration. Recent studies showed that the blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB) are compromised in an animal model of ALS due to endothelial cell degeneration. A later study demonstrated a loss of endothelium integrity in the spinal cords of ALS patients. Since circulating endothelial cells (CECs) in the peripheral blood are associated with endothelium damage, being detached dysfunctional endothelial cells, we hypothesized that CEC levels may reflect endothelium condition in ALS patients.
Methodology/Principal Findings: CEC levels were estimated in whole blood smears from …

Water, Sanitation And Hygiene For The Prevention Of Diarrhoea, Sandy Cairncross, Caroline Hunt, Sophie Boisson, Kristof Bostoen, Val Curtis, Isaac Chun-Hai Fung, Wolf-Peter Schmidt

Isaac Chun-Hai Fung

Background: Ever since John Snow's intervention on the Broad St pump, the effect of water quality, hygiene and sanitation in preventing diarrhoea deaths has always been debated. The evidence identified in previous reviews is of variable quality, and mostly relates to morbidity rather than mortality.
Methods: We drew on three systematic reviews, two of them for the Cochrane Collaboration, focussed on the effect of handwashing with soap on diarrhoea, of water quality improvement and of excreta disposal, respectively. The estimated effect on diarrhoea mortality was determined by applying the rules adopted for this supplement, where appropriate.
Results: The striking effect …

Public Health Workforce Trust Measures: Comparative Analysis Of T1-T2 Measures Across Two Lhd’S And Organizational Responses To Economic Hard Times, William A. Mase

William A. Mase

This public health workforce research initiative expands practice-based employee trust measurement in a time-one time-two (T1 – T2) quantitative design methodology. The initiative is an expansion of previously conducted research within the Cincinnati and Northern Kentucky Health Departments. Tailored workforce-based quality improvement (QI) initiatives were developed and implemented within the two local health departments (LHD’s). Workforce-based QI was a product of strategic initiatives defined by leadership of both health departments and informed by a critical review of the data collected in 2008. Analysis of additional independent variables and interaction terms were evaluated and are presented for supervisor/employee race concordance. In …

Barbers Against Prostate Cancer: A Feasibility Study For Prostate Cancer Education In An Urban African American Community, John S. Luque, Brian M. Rivers, Maisha Kambon, Ronald Brookins, B. Lee Green, Cathy D. Meade

Community Health Faculty Publications

The goal of this pilot study was to assess the feasibility of training barbers to deliver a brief culturally and literacy appropriate prostate cancer educational intervention to urban African American men. Eight barbers received training to deliver a 2-month educational intervention in the barbershop and completed pre- and posttest training assessments. The training workshops led to a significant increase in mean prostate cancer knowledge scores among the barbers (60% before vs. 79% after; P < 0.05). The barbers also reported positively on the intervention in terms of satisfaction and relative ease of engaging clients. Training barbers to deliver a prostate cancer educational intervention is a feasible strategy for raising prostate cancer awareness of the disease among a priority population.

A Qualitative Study Of Stressors, Stress Symptoms, And Coping Mechanisms Among College Students Using Nominal Group Process, Helen W. Bland, Bridget F. Melton, Stephen Patrick Gonzalez

Community Health Faculty Publications

Background: Stress is part of the college experience; however, how students deal with stress can greatly impact their behaviors and health status. Purpose: The purpose of this study was to qualitatively assess sources of stress, types of stressors, and coping mechanisms employed among undergraduate students.

Methods: Nominal group process was utilized to obtain information related to study variables and help prioritize the accounts provided by study participants (n = 173).

Results: Participants gave insight into the unique stress faced by this generation (grades, GPA, multitasking, parental expectations), stress symptoms (more psychological in nature), and coping strategies (prayer, talking to mom, …

On The Eigenstructures Of Functional K-Potent Matrices And Their Integral Forms, Yan Wu, Daniel F. Linder

Biostatistics Faculty Publications

In this paper, a functional k-potent matrix satisfies the equation, where k and r are positive integers, and are real numbers. This class of matrices includes idempotent, Nilpotent, and involutary matrices, and more. It turns out that the matrices in this group are best distinguished by their associated eigen-structures. The spectral properties of the matrices are exploited to construct integral k-potent matrices, which have special roles in digital image encryption.

Athlete And Coach Knowledge, Attitudes, And Perceptions Of Sickle Cell Trait And National Collegiate Athletic Association Mandated Testing: Recommendations For Intervention, Raymona Holloway Lawrence

Electronic Theses and Dissertations

Individuals with Sickle Cell Trait have died suddenly after extreme exertion during military training, athletic practice or games (Kerle & Nishimura, 1996; Harrelson, Fincher & Robinson, 1995; Howe & Bowden, 2007). One of those deaths, Dale Lloyd, a football player at Rice University, prompted a change in the National Collegiate Athletic Association's (NCAA) Sports Medicine Handbook Guideline 3c: The Student Athlete with Sickle Cell Trait. Effective August 2010, the NCAA Division I Proposal No. 2009-75-B mandated sickle cell trait testing in all Division I athletes unless documented results of a prior test are provided to the institution or the student-athlete …