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Lipid microdomains play a vital role in a number of biological processes. They are often a target of diseases and viruses. Viruses in particular utilize lipid microdomains to gain entry and fuse with the host-cell membrane. Measles virus (MV) a human pathogen, spread from cell to cell by inducing fusion

Lipid microdomains play a vital role in a number of biological processes. They are often a target of diseases and viruses. Viruses in particular utilize lipid microdomains to gain entry and fuse with the host-cell membrane. Measles virus (MV) a human pathogen, spread from cell to cell by inducing fusion of cellular membranes. This causes the formation of large multinucleated cells, syncytia. It has been previously reported that lipid microdomains are essential for measles virus infection/replication. In this study we used methyl beta cyclodextrin (MBCD), a cholesterol-sequestering agent to disrupt lipid microdomains. Through transfection of Vero h/SLAM cells, we found that Measles virus fusion was dependent on lipid microdomains integrity. Indeed, a dose dependent fusion inhibition was documented with increasing concentrations of MBCD resulting in reduced formation of syncytia.
ContributorsKwan, Jason (Author) / Reyes del Valle, Jorge (Thesis director) / Chang, Yung (Committee member) / Mor, Tsafrir (Committee member) / Barrett, The Honors College (Contributor) / Department of Finance (Contributor) / School of Life Sciences (Contributor)
Created2013-05
Description
The Community Action Research Experiences (CARE) Program collaborated with the WellCare Foundation (WCF) to assess the referral sources of the clinic in order to more effectively reach additional potential patients. Archival data were analyzed from a 19-month period from the medical records of patients. Also, data were collected from interviews

The Community Action Research Experiences (CARE) Program collaborated with the WellCare Foundation (WCF) to assess the referral sources of the clinic in order to more effectively reach additional potential patients. Archival data were analyzed from a 19-month period from the medical records of patients. Also, data were collected from interviews with the case manager of agencies that were a known referral source of WCF. These case manager interviews were completed over a one-month period. For the archival data part of the project, data were collected from 117 patients. Four representatives from community agencies participated in phone interviews. The results indicated that the most common referral sources were word of mouth, followed by community agency referrals. The results also indicated that WCF appears to have served a unique niche that is not served by other non-profit health clinics. These results led to implications for action and direction for future applied research.
ContributorsEbbing, Brittany Gabrielle (Author) / Spinrad, Tracy (Thesis director) / Dumka, Larry (Committee member) / Brougham, Jennifer (Committee member) / Barrett, The Honors College (Contributor) / T. Denny Sanford School of Social and Family Dynamics (Contributor) / School of Life Sciences (Contributor)
Created2013-05
Description
Abstract As we move forward in education reform in the globalized 21st century, the United States must visit new ways to teach science in high school classrooms. The goal of this investigation is to analyze the current research literature for the best and most promising teaching strategies and techniques in

Abstract As we move forward in education reform in the globalized 21st century, the United States must visit new ways to teach science in high school classrooms. The goal of this investigation is to analyze the current research literature for the best and most promising teaching strategies and techniques in secondary education biology classrooms that promote academic excellence for all students. Looking at policy and school reform literature in science education to establish the context of the current system, the paper will not focus on the political as or systematic changes needed to ground an overall successful system. However, because of their inherent effect on the education system, the political aspects of education reform will be briefly addressed. The primary focus, by addressing the emphasis on standardization, inflexibility of instruction and lack of creativity specifically in high school biology classrooms, seeks to clarify small changes that can influence students' academic outcomes. The United States is performing on such a poor level in science and math proficiency that it cannot match students abroad and this is seen through test scores and the production of competent graduates. This investigation serves to organize literature from education researchers and showcase best and promising teaching and learning practices that catalyze academic excellence for all students in our pluralistic, democratic and complex schooling and societal contexts.
ContributorsHildebrandt, Kevin Andrew (Author) / Ovando, Carlos (Thesis director) / Schugurensky, Daniel, 1958- (Committee member) / Fischman, Gustavo (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / School of International Letters and Cultures (Contributor)
Created2013-05
Description
Previous findings from our lab have demonstrated that nicotine and social reward have synergistic effects when experienced together versus when experienced separately. The purpose of this experiment is to understand the neural mechanisms underlying this synergistic effect by quantifying Fos protein, a marker for neural activation, in various brain regions.

Previous findings from our lab have demonstrated that nicotine and social reward have synergistic effects when experienced together versus when experienced separately. The purpose of this experiment is to understand the neural mechanisms underlying this synergistic effect by quantifying Fos protein, a marker for neural activation, in various brain regions. We utilized the conditioning place preference (CPP) model to assess reward. Four groups of adolescent male rats (n=120) were given either nicotine (Nic) (0.1 mg/kg/mL) or saline (Sal) and were placed in the CPP apparatus either with a social partner (Soc) or alone (Iso). Thus, groups were: 1.)Sal+Iso, 2).Sal+Soc, 3).Nic+Iso, 4).Nic+Soc. Brains of some the rats (n=40) were collected for Fos staining 90 minutes after the last conditioning session to obtain Fos data in response to direct exposure to the stimuli. The following regions were analyzed for Fos expression: central amygdala (CeA), medial amygdala (MeA), basolateral amygdala (BLA), nucleus accumbens core (NAcCore), and nucleus accumbens shell (NAcShell). Place preference changes occurred in socially-conditioned groups reflecting social reward and in nicotine-conditioned groups reflecting nicotine reward. As expected, the Sal+Iso control group failed to display a preference change. Fos data revealed a significant increase in Fos expression in the CeA, MeA, NAcCore and NAcShell for socially-conditioned animals and a significant decrease in the NAcCore for nicotine-conditioned groups. Experiencing both social and nicotine rewards together appeared to produce greater activation in the BLA. However, there was an increase in Fos expression in the negative control group relative to Nic+Iso group. The results of CPP suggest that social, nicotine and their combination are rewarding. The combination of the nicotine and social reward could have been more rewarding than social and nicotine separately, but the test was not sensitive to reward magnitude. The increase in Fos expression in the negative control group in the BLA could be due to isolation stress. Overall, these results suggest that these brain regions had greater activation to social reward.
ContributorsGoenaga, Julianna Gloria (Author) / Neisewander, Janet (Thesis director) / Orchinik, Miles (Committee member) / Olive, Michael (Committee member) / Barrett, The Honors College (Contributor) / School of Historical, Philosophical and Religious Studies (Contributor) / School of Life Sciences (Contributor)
Created2013-05
Description
Many of the derived features of the human skeleton can be divided into two adaptive suites: traits related to bipedalism and traits related to encephalization. The cervical spine connects these adaptive suites and is itself unique in its marked lordosis. I approach human cervical evolution from three directions: the functional

Many of the derived features of the human skeleton can be divided into two adaptive suites: traits related to bipedalism and traits related to encephalization. The cervical spine connects these adaptive suites and is itself unique in its marked lordosis. I approach human cervical evolution from three directions: the functional significance of cervical curvature, the identification of cervical lordosis in osteological material, and the representation of the cervical spine in the hominin fossil record.
ContributorsFatica, Lawrence Martin (Author) / Kimbel, William (Thesis director) / Reed, Kaye (Committee member) / Schwartz, Gary (Committee member) / Barrett, The Honors College (Contributor) / School of Human Evolution and Social Change (Contributor) / School of Life Sciences (Contributor)
Created2014-05
Description
It is well known that deficiencies in key chemical elements (such as phosphorus, P) can reduce animal growth; however, recent empirical data have shown that high levels of dietary nutrients can also reduce animal growth. In ecological stoichiometry, this phenomenon is known as the "stoichiometric knife edge," but its underlying

It is well known that deficiencies in key chemical elements (such as phosphorus, P) can reduce animal growth; however, recent empirical data have shown that high levels of dietary nutrients can also reduce animal growth. In ecological stoichiometry, this phenomenon is known as the "stoichiometric knife edge," but its underlying mechanisms are not well-known. Previous work has suggested that the crustacean zooplankter Daphnia reduces its feeding rates on phosphorus-rich food, causing low growth due to insufficient C (energy) intake. To test for this mechanism, feeding rates of Daphnia magna on algae (Scenedesmus acutus) differing in C:P ratio (P content) were determined. Overall, there was a significant difference among all treatments for feeding rate (p < 0.05) with generally higher feeding rates on P-rich algae. These data indicate that both high and low food C:P ratio do affect Daphnia feeding rate but are in contradiction with previous work that showed that P-rich food led to strong reductions in feeding rate. Additional experiments are needed to gain further insights.
ContributorsSchimpp, Sarah Ann (Author) / Elser, James (Thesis director) / Neuer, Susanne (Committee member) / Peace, Angela (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / School of Sustainability (Contributor)
Created2014-05
Description
Childbirth, an essential stage of human life, has been carried out and treated differently in numerous ways throughout time. Although the overall method of birth is biologically the same, women and medical professionals in the United States in particular have changed how they view and manage childbirth over the past

Childbirth, an essential stage of human life, has been carried out and treated differently in numerous ways throughout time. Although the overall method of birth is biologically the same, women and medical professionals in the United States in particular have changed how they view and manage childbirth over the past 70 years. Some of said changes are extensive and occurred more rapidly than one might typically expect for such a delicate and important stage of a woman‘s, and infant‘s, life. As consumerism, capitalism, and the courts have changed America‘s lifestyles, politics, and society, so too have they drastically affected the way we are conditioned to approach childbirth. More importantly, as society changes over time, the medical field and
methods of specialists also change, and although the benefits of these changes are challenged by some individuals, these procedures and recommendations from professionals inevitably affect us all. Methods and procedures of modern, medicalized childbirth, and even the significance placed on the event, are products of historical and cultural factors influenced by scientific and social trends. However, there exists a small and steadily growing number of women and families who choose to have their birth take place outside of the present societal norm, and consequently outside of hospitals. This group‘s existence and growth has been attributed to several factors, including changes in societal values, differentiation between different financial classes, and the
medicalization of childbirth. Although statistically a small percentage of the majority, these women who choose to give birth outside of a hospital exist amidst an immense ongoing controversy between gynecologists, physicians, mothers, and midwives regarding what options should be available when childbirth is undertaken in the United States.
ContributorsHernandez, Dustin (Author) / Nguyen, Christy (Author) / Koblitz, Ann (Thesis director) / Budolfson, Arthur (Committee member) / Walker, Shell (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / W. P. Carey School of Business (Contributor)
Created2012-12
Description

In 2014 alone, 40% of all drug abuse-related emergency department visits involved cocaine, and despite the detrimental effects there is still no FDA approved treatment for cocaine use disorders (CUDs; Dawn, 2014). Studies show that serotonin 1B receptor (5HT1BR) agonists modulate cocaine abuse-related behaviors in opposite directions depending on the

In 2014 alone, 40% of all drug abuse-related emergency department visits involved cocaine, and despite the detrimental effects there is still no FDA approved treatment for cocaine use disorders (CUDs; Dawn, 2014). Studies show that serotonin 1B receptor (5HT1BR) agonists modulate cocaine abuse-related behaviors in opposite directions depending on the phase of the addiction cycle in male rats. In particular, the selective 5HT1BR agonist, CP94,253, facilitates cocaine intake during maintenance of daily cocaine self-administration. Paradoxically, after 21 days of abstinence, CP94,253 attenuates cocaine intake in male rats on a low effort fixed ratio 5 (FR5) and a high effort progressive ratio (PR) schedule of reinforcement. PR measures motivation as it requires an exponentially increasing number of lever responses to obtain the next reinforcer after a successful reinforcer. In contrast to male rats, we recently found CP94,253 attenuates cocaine intake before and after abstinence on an FR5 schedule of reinforcement in female rats, suggesting the attenuating effects of CP94,253 on cocaine intake is not dependent on a period of abstinence in females. However, the effect of CP94,253 on motivation for cocaine has not yet been examined in female rats. Therefore, we addressed this gap in the present study. Female Sprague-Dawley rats were trained to self-administer 0.375 mg/kg, IV cocaine or to obtain sucrose pellets (45 mg) on a PR schedule of reinforcement and were then pretreated with vehicle or CP94,253 (3.2, 5.6 and 10 mg/kg, SC) prior to their self-administration session. A separate cohort was pretreated with CP94,253 to examine the effects of CP94,253 on cocaine-seeking behavior (i.e., operant responses when cocaine is no longer available) and spontaneous locomotion after 21 or 60 days of abstinence. The preliminary findings show that CP94,253 has minimal impacts on decreasing cocaine intake on a PR schedule in female rats but decreases cue reactivity up to 60 days after abstinence in female rats. These findings suggest that 5-HT1BR agonists may be useful treatments for cocaine craving.

ContributorsRuscitti, Brielle Allesandra (Author) / Neisewander, Janet (Thesis director) / Powell, Gregory (Committee member) / Scott, Samantha (Committee member) / School of Life Sciences (Contributor, Contributor) / School of Human Evolution & Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description

Mayer-Rokitansky-Küster-Hauser (MRKH) is a rare Disorder of Sexual Development (DSD) that results in the lack of a uterus and vagina in women. Receiving this diagnosis during adolescence can cause various forms of psychological distress in patients and families.<br/>Specifically, this condition could affect a women’s gender identity, body image, romantic relationships,

Mayer-Rokitansky-Küster-Hauser (MRKH) is a rare Disorder of Sexual Development (DSD) that results in the lack of a uterus and vagina in women. Receiving this diagnosis during adolescence can cause various forms of psychological distress in patients and families.<br/>Specifically, this condition could affect a women’s gender identity, body image, romantic relationships, family relationships, and psychological wellbeing. Parents are also put in a stressful<br/>position as they now have to navigate the healthcare system, disclosure, and the relationship with their child. This study aims to expand the knowledge of psychosocial adjustment by studying body<br/>image, gender identity, and mental health in individuals living with MRKH as well as parental disclosure, parental support systems, and parental perceptions of their child’s mental health.

ContributorsLaloudakis, Vasiliki (Author) / Wilson, Melissa (Thesis director) / Fontinha de Alcantara, Christiane (Committee member) / Baimbridge, Erica (Committee member) / Department of Psychology (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description

Mentions of diversity have become an essential part of every university and medical school’s mission statement. Yet, with such an emphasis on diversity, there is an evident absence of<br/>cultural competence education in the curricula of medical education. There is no clear answer of<br/>what is expected of physicians and no direct

Mentions of diversity have become an essential part of every university and medical school’s mission statement. Yet, with such an emphasis on diversity, there is an evident absence of<br/>cultural competence education in the curricula of medical education. There is no clear answer of<br/>what is expected of physicians and no direct transitions for the different stages of medical<br/>training when it comes to cultural competence education. This is a vital issue, as there is a close<br/>relationship between the quality of patient care, patient adherence, and medical providers’ levels<br/>of cultural competence. This research analyzes the extent that cultural competence is taught at<br/>various points of the medical education cycle through a data analysis of an IRB approved<br/>questionnaire given to students within the medical education cycle and their value versus<br/>exposure of cultural competence.

ContributorsIbrahim, Aseel (Author) / Laubichler, Manfred (Thesis director) / Vélez-Ibañez, Carlos (Committee member) / School of International Letters and Cultures (Contributor) / School of Transborder Studies (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05