Medicine and Health Sciences Commons^™

Graphical Technique For Identifying A Monotonic Variance Stabilizing Transformation For Absolute Gene Intensity Signals, Kellie J. Archer, Catherine I. Dumur, Viswanathan Ramakrishnan

Biostatistics Publications

Background

The usefulness of log₂ transformation for cDNA microarray data has led to its widespread application to Affymetrix data. For Affymetrix data, where absolute intensities are indicative of number of transcripts, there is a systematic relationship between variance and magnitude of measurements. Application of the log₂ transformation expands the scale of genes with low intensities while compressing the scale of genes with higher intensities thus reversing the mean by variance relationship. The usefulness of these transformations needs to be examined.

Results

Using an Affymetrix GeneChip^® dataset, problems associated with applying the log₂ transformation to absolute intensity …

Calcium And Glycolysis Mediate Multiple Bursting Modes In Pancreatic Islets, Richard Bertram, Leslie S. Satin, Min Zhang, Paul Smolen, Arthur Sherman

Pharmacology and Toxicology Publications

Abstract

Pancreatic islets of Langerhans produce bursts of electrical activity when exposed to stimulatory glucose levels. These bursts often have a regular repeating pattern, with a period of 10–60 s. In some cases, however, the bursts are episodic, clustered into bursts of bursts, which we call compound bursting. Consistent with this are recordings of free Ca²⁺ concentration, oxygen consumption, mitochondrial membrane potential, and intraislet glucose levels that exhibit very slow oscillations, with faster oscillations superimposed. We describe a new mathematical model of the pancreatic β-cell that can account for these multimodal patterns. The model includes the feedback of …

Equivalence Study Of A Dental Anatomy Computer-Assisted Learning Program, Russell E. Bogacki, Al M. Best, Louis M. Abbey

Periodontics Publications

Tooth Morphology is a computer-assisted learning program designed to teach the anatomy of the adult dentition. The purpose of this study was to test whether Tooth Morphology could teach dental anatomy to first-year dental students as well as the traditional lecture. A randomized controlled trial was performed with forty-five first-year dental students. The students were randomly assigned to either the Tooth Morphology group (n=23), which used the computer-assisted learning program and did not attend lecture, or the lecture group (n=22), which attended the traditional lecture and did not useTooth Morphology. The Tooth Morphology group had a final exam …

Palifermin For Oral Mucositis After Intensive Therapy For Hematologic Cancers, Ricardo Spielberger, Patrick Stiff, William Bensinger, Teresa Gentile, Daniel Weisdorf, Tarun Kewalramani, Thomas Shea, Saul Yanovich, Keith Hansen, Stephen Noga, John Mccarty, C. Frederick Lemaistre, Eric C. Sung, Bruce R. Blazar, Dieter Elhardt, Mon-Gy Chen, Christos Emmanouilides

Internal Medicine Publications

BACKGROUND: Oral mucositis is a complication of intensive chemotherapy and radiotherapy with no effective treatment. We tested the ability of palifermin (recombinant human keratinocyte growth factor) to decrease oral mucosal injury induced by cytotoxic therapy. METHODS: This double-blind study compared the effect of palifermin with that of a placebo on the development of oral mucositis in 212 patients with hematologic cancers; 106 patients received palifermin (60 microg per kilogram of body weight per day) and 106 received a placebo intravenously for three consecutive days immediately before the initiation of conditioning therapy (fractionated total-body irradiation plus high-dose chemotherapy) and after autologous …

Ten Years’ Experience With Alendronate For Osteoporosis In Postmenopausal Women, Henry G. Bone, David Hosking, Jean-Pierre Devogelaer, Joseph R. Tucci, Ronald D. Emkey, Richard P. Tornino, Jose A. Rodriguez-Portales , M.D., Robert W. Downs, Jayanti Gupta, Arthur C. Santora, Uri A. Liberman

Internal Medicine Publications

Background

Antiresorptive agents are widely used to treat osteoporosis. We report the results of a multinational randomized, double-blind study, in which postmenopausal women with osteoporosis were treated with alendronate for up to 10 years.

Methods

The initial three-year phase of the study compared three daily doses of alendronate with placebo. Women in the original placebo group received alendronate in years 4 and 5 and then were discharged. Women in the original active-treatment groups continued to receive alendronate during the initial extension (years 4 and 5). In two further extensions (years 6 and 7, and 8 through 10), women who had …

Public-Access Defibrillation And Survival After Out-Of-Hospital Cardiac Arrest, Alfred Hallstrom, Joseph P. Ornato

VCU Health Publications

BACKGROUND

The rate of survival after out-of-hospital cardiac arrest is low. It is not known whether this rate will increase if laypersons are trained to attempt defibrillation with the use of automated external defibrillators (AEDs).

Full Text of Background...

METHODS

We conducted a prospective, community-based, multicenter clinical trial in which we randomly assigned community units (e.g., shopping malls and apartment complexes) to a structured and monitored emergency-response system involving lay volunteers trained in cardiopulmonary resuscitation (CPR) alone or in CPR and the use of AEDs. The primary outcome was survival to hospital discharge.

Full Text of Methods...

RESULTS

More than …

Caregiver Education And Service Utilization In African American Families Dealing With Dementia, Constance L. Coogle

Virginia Center on Aging Publications

For more than a decade attention has been focused on Alzheimer’s family caregivers in African American communities. The Fourth Report of the Advisory Panel on Alzheimer’s Disease to the U. S. Congress and the U.S. Department of Health and Human Services calls for “…public education and outreach efforts specifically targeted to ethnic elders and their families and communities through the development and dissemination of culturally relevant materials emphasizing both the established facts about [Alzheimer’s Disease and Related Disorders] and the efficacy of seeking treatment.” (Advisory Panel on Alzheimer’s Disease, 1993, p. 50). While federal financing and state initiatives have addressed …

Meeting The Challenges And Opportunities Of Aging With Lifelong Disabilities: The Area Planning And Services Committee, Allison Wilder, Edward F. Ansello

Case Studies from Age in Action

Educational Objectives

1. To generate awareness of needs and capacities of aging adults with lifelong disabilities and their effect upon human services

2. To understand the challenges and opportunities facing aging adults with lifelong disabilities in accessing appropriate community supports and services.

3. To illustrate the benefits of intersystem collaboration among human services providers through the vehicle of an Area Planning and Services Committee.

Mental Fitness And The Lifelong Learning Movement, Jane F. Stephan, Debbie Leidheiser, Edward F. Ansello

Case Studies from Age in Action

Educational Objectives

1. To identify the functional benefits of continued mental activity

2. To examine the role of Lifelong Learning Institutes in later life

3. To describe the motivations of participants in lifelong learning

Law Enforcement And Adult Protective Services Working Together: A Team Approach To Elder Abuse Cases, Anne Douglas Palmer

Case Studies from Age in Action

Educational Objectives

1. Familiarize readers with the different roles and responsibilities of Adult Protective Services and law enforcement in elder abuse cases.

2. Demonstrate the benefits of working collaboratively to resolve complex elder abuse and domestic violence cases.

Congregate Nutrition Programs Can Alleviate Loneliness And Isolation, Carol Cooper Driskill

Case Studies from Age in Action

Educational Objectives

1. Familiarize readers with the Older Americans Act congregate nutrition services provided to community-residing older adults.

2. Demonstrate how congregate nutrition services can alleviate isolation and loneliness in community-residing older adults.

The Surgical Infection Society Guidelines On Antimicrobial Therapy For Intra-Abdominal Infections: An Executive Summary, John E. Mazuski, Robert G. Sawyer, Avery B. Nathens, Joseph T. Dipiro, Moshe Schein, Kenneth A. Kudsk, Charles Yowler

Publications from the Office of the Dean

The Surgical Infection Society last published guidelines on antimicrobial therapy for intra-abdominal infections in 1992 (Bohnen JMA, et al., Arch Surg 1992;127:83-89). Since then, an appreciable body of literature has been published on this subject. Therefore, the Therapeutics Agents Committee of the Society undertook an effort to update the previous guidelines, primarily using data published over the past decade. An additional goal of the Committee was to characterize its recommendations according to contemporary principles of evidence-based medicine. To develop these guidelines, the Committee carried out a systematic search for all English language articles published between 1990 and 2000 related to …

Aminoglycosides For Intra-Abdominal Infection: Equal To The Challenge?, John A. Bailey, Katherine S. Virgo, Joseph T. Dipiro, Avery B. Nathens, Robert G. Sawyer, John E. Mazuski

Publications from the Office of the Dean

Background: Aminoglycosides, combined with antianaerobic agents, have been used widely for the treatment of intra-abdominal infection. However, some prospective randomized controlled trials and other data suggested that aminoglycosides were less efficacious than newer comparators for the treatment of these infections. We therefore performed a meta-analysis of all prospective randomized controlled trials utilizing aminoglycosides to reevaluate the efficacy of these agents for the treatment of intra-abdominal infection.

Methods: Published English-language prospective randomized controlled trials comparing aminoglycosides with other agents for treatment of intra-abdominal infection were identified by MEDLINE search. For each study, data were collected regarding the number of …

The Surgical Infection Society Guidelines On Antimicrobial Therapy For Intra-Abdominal Infections: Evidence For The Recommendations, John E. Mazuski, Robert G. Sawyer, Avery B. Nathens, Joseph T. Dipiro, Moshe Schein, Kenneth A. Kudsk, Charles Yowler

Publications from the Office of the Dean

Revised guidelines for the use of antimicrobial therapy in patients with intra-abdominal infections were recently developed by the Therapeutic Agents Committee of the Surgical Infection Society (Mazuski et al., Surg Infect2002;3:161-173). These were based, insofar as possible, on evidence published over the past decade. The objective of this document is to describe the process by which the Committee identified and reviewed the published literature utilized to develop the recommendations and to summarize the results of those reviews. English-language articles published between 1990 and 2000 related to antimicrobial therapy for intra-abdominal infections were identified by a systematic MEDLINE search and …