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A Study of Division Deans' in the North Carolina Community College System Self Perceived Leadership Style Based on Bolman and Deal's Four Frame Theory
(East Carolina University, 2008)
This study was designed to expand the knowledge base of academic division deans by correlating differences in leadership styles (i.e., frames) of the division deans within the North Carolina Community College System. The ...
The unique roles of IFE-1, a germline-specific isoform of eukaryotic translation factor 4E, during gametogenesis
(East Carolina University, 2009)
Fertility and embryonic viability are measures of efficient germ cell growth and differentiation. During oogenesis, spermatogenesis and embryogenesis cells initially proliferate then differentiate into specific tissues. New proteins are required for both cell growth and differentiation, requiring qualitative and quantitative changes in protein synthesis. During late gametogenesis and early embryogenesis the expression of the appropriate proteins is a primarily due to translational control. Translational control of mRNAs is mediated in part by eukaryotic initiation factor 4E (eIF4E). eIF4E binds the methylated 5' cap of mRNA and recruits it to the ribosome. The nematode worm C.elegans expresses five isoforms of eIF4E (termed IFE-1 through 5). IFE-1 is expressed primarily in the germline and is the only isoform that associates with P granules by binding directly to PGL-1. P granules are ribonucleoprotein particles (RNPs) that contain stored mRNAs and proteins needed for oogenesis and early embryogenesis. Using a strain that lacks IFE-1, I assessed the translational efficiency of maternal mRNAs bound and not bound to P granules by polysome fractionation. Translation of pos-1, pal-1, mex-1, oma-1, ced-4 and glp-1 mRNAs was inefficient in the ife-1 strain relative to wild type worms. GAPDH (gpd-3) mRNA translation was not affected. We also observed differences in the pattern of expression of the MEX-1 protein during oogenesis. In males, secondary spermatocytes failed to complete cytokinesis at 25°C in absence of IFE-1. Males deficient of IFE-1 therefore lacked mature sperm. In addition, ife-1 spermatocytes prematurely accumulated pro-apoptotic CED-4, homolog to mammalian Apaf-1, during spermatogenesis. In ife-1 worms fertility was decreased by 80% due to decreased viability of both oocytes and spermatocytes. Our data indicate two unique roles for eIF4E (IFE-1 isoform) in late oogenesis and spermatogenesis. We suggest that IFE-1 preferentially recruits regulated mRNAs at critical times during germ cell development. ...
The Biochemical Characterization Of Neuronal K+ Channel N-Glycans And Their Role In Regulating K+ Channel Function
(East Carolina University, 2009)
The Kv3 and Kv1 subfamilies of voltage–gated K+ channels are critical components which contribute to action potential repolarization throughout the central nervous system. Here, it was shown that both absolutely conserved ...
The Role of Axl and Axl-like Proteins in Murine Spermatogenesis
(East Carolina University, 2009)
Mice lacking the Axl receptor tyrosine kinase (RTK) and its family members exhibit detrimental effects on their reproductive ability. AXL is localized to Sertoli cells, which are the major nurturing cells in the seminiferous ...
The Distribution Of Regulated Actomyosin States Is Central To Cardiac Muscle Regulation And Disturbance Of This Distribution Leads To Congenital Cardiomyopathies
(East Carolina University, 2009)
Hypertrophic and restrictive cardiomyopathies are congenital cardiac diseases that have an incidence of over one in five hundred and may lead to sudden cardiac death. One of the main impediments to directed treatment is ...
The role of mediators of neuronal plasticity in the circadian regulation of suprachiasmatic nucleus by light
(East Carolina University, 2009)
Circadian rhythms are highly conserved physiological functions that are present in almost all living organisms. In mammals, circadian rhythms are synchronized to the environmental light:dark cycle by daily adjustments in ...
Effects of Aerobic Capacity Phenotype on Adaptive Responses to Ischemic Stress
(East Carolina University, 2009)
Ischemic disease leads to increased tissue stress by decreasing supply of nutrients adequate to meet energy demands. To maintain functionality, compensatory mechanisms for diminished vascular supply are induced by numerous ...
Reanimating the Graveyard : Heritage Tourism Development of North Carolina Shipwrecks
(East Carolina University, 2009)
The shipwrecks of the Graveyard of the Atlantic are a prime subject for heritage tourism development in North Carolina. Education about these irreplaceable cultural resources, and effective interpretation of them, is ...
What Is Good Nursing Care? The Lived Meaning of Quality Nursing Care for Practicing Nurses
(East Carolina University, 2008-04-11)
Healthcare quality in the United States of America (USA) is the subject of intense criticism. Although quality nursing care is vital to patient outcomes and safety, meaningful quality improvements have been disturbingly ...
CURRICULUM INTERNATIONALIZATION AND THE COMMUNITY COLLEGE
(East Carolina University, 2009)
American higher education is striving to create the appropriate academic environment in order to prepare students to be interculturally competent for the realities of the twenty first century, and curriculum internationalization ...