Medicine and Health Sciences Commons^™

Ecological Niche Of The 2003 West Nile Virus Epidemic In The Northern Great Plains Of The United States, Michael Wimberly, Michael B. Hildreth, Stephen P. Boyte, Erik Lindquist, Lon Kightlinger

Public Health Resources

Background: The incidence of West Nile virus (WNv) has remained high in the northern Great Plains compared to the rest of the United States. However, the reasons for the sustained high risk of WNv transmission in this region have not been determined. To assess the environmental drivers of WNv in the northern Great Plains, we analyzed the county-level spatial pattern of human cases during the 2003 epidemic across a seven-state region.
Methodology/Principal Findings: County-level data on WNv cases were examined using spatial cluster analysis, and were used to fit statistical models with weather, climate, and land use variables as predictors. …

Regulation Of The Human Parainfluenza Virus (Hpiv3) Fusion Protein, Amanda Ruth Chapman

Theses and Dissertations (ETD)

Paramyxoviruses include a number of important human pathogens, including measles virus, mumps virus, and the human parainfluenza viruses (hPIV) 1-4, as well as several animal pathogens, such as Sendai virus, Nipah virus and Hendra virus. The creation of effective drugs and vaccines against this family of viruses would play an important role in decreasing the prevalence of these viruses and contributing to the health of both humans and animals worldwide. The purpose of this work was to determine how the fusion (F) protein is regulated with a focus on the heptad repeat B (HRB) region of the F protein located …

Communicable Disease And International Security: The Case Of Africa & Hiv/Aids, Amy L Rue

Archived Theses and Dissertations

In this thesis, I will look at how communicable disease fits into the human security discourse particularly with the disease being views as the 'potential threat' and the 'referent object' within the international sphere. The case of Africa will be used to illustrate the impact of HIV/AIDS on international security at country, regional and international levels. Ultimately, I will argue that communicable disease, as a human security issue, is a clear and important international security issue due to its status as a continual "potential threat" within international relations particularly in Africa. The elements that I will use to establish my …

Molecular Characterisation Of A Bovine-Like Rotavirus Detected From A Giraffe, Emily Mulherin, Jill Bryan, Marijke Beltman, Luke O'Grady, Eugene Pidgeon, Lucie Garon, Andrew Lloyd, John Bainbridge, Helen O'Shea, Paul Whyte, Séamus Fanning

Department of Biological Sciences Publications

Background

Rotavirus (RV), is a member of the Reoviridae family and an important etiological agent of acute viral gastroenteritis in the young. Rotaviruses have a wide host range infecting a broad range of animal species, however little is known about rotavirus infection in exotic animals. In this paper we report the first characterisation of a RV strain from a giraffe calf.

Results

This report describes the identification and detailed molecular characterisation of a rotavirus strain detected from a 14-day-old Giraffe (Giraffa camelopardalis), presenting with acute diarrhea. The RV strain detected from the giraffe was characterized molecularly as G10P[11]. …

Helical Peptides Derived From Lactoferrin Bind Hepatitis C Virus Envelope Protein E2, Reem Beleid, Donna Douglas, Norman Kneteman, Kamaljit Kaur

Pharmacy Faculty Articles and Research

Hepatitis C virus is a major cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma infecting more than 170 million people. Hepatitis C virus envelope 2 glycoprotein (E2) binds several cell‐surface molecules that act as receptor candidates mediating hepatitis C virus entry into hepatocytes. Peptides derived from human lactoferrin have been shown to bind hepatitis C virus‐E2 protein thereby preventing hepatitis C virus entry in cultured hepatocytes. In this study, starting from a 33‐residue human lactoferrin‐derived peptide, a number of biotin‐linked α‐peptides were synthesized and investigated for their E2 protein binding activity. E2 protein from hepatitis C virus genotype 1b …

Population Size And Incidence Of Virus Infection In Free-Living Populations Of Cucurbita Pepo, Hector Quemada, Laura Strehlow, Deena S. Decker-Walters, Jack E. Staub

University Faculty Publications and Creative Works

Impact assessments of virus resistance transgene introgression into wild, free-living populations are important for determining whether these transgenes present a risk to agriculture or the environment. Transgenic virus-resistant Cucurbita pepo ssp. ovifera var. ovifera L. (squash) cultivars have been commercialized, and may be cultivated in close proximity to cross-compatible wild, free-living relatives (C. pepo subsp. pepo vars. ozarkana and texana). Therefore, the potential impact of these virus resistance transgenes was studied by surveying the incidence and fluctuations of virus infection (as assayed by ELISA), virus symptoms (which may not be seen in an infected plant) and population size in forty-three …

Immune Evasion By Rabies Viruses Through The Maintenance Of Blood-Brain Barrier Integrity., Anirban Roy, Douglas C. Hooper

Department of Cancer Biology Faculty Papers

The attenuated rabies virus (RV) strain Challenge Virus Standard (CVS)-F3 and a highly pathogenic strain associated with the silver-haired bats (SHBRV) can both be cleared from the central nervous system (CNS) tissues by appropriate antiviral immune mechanisms if the effectors are provided access across the blood-brain barrier (BBB). In the case of SHBRV infection, antiviral immunity develops normally in the periphery but fails to open the BBB, generally resulting in a lethal outcome. To determine whether or not an absence in the CNS targeted immune response is associated with the infection with other pathogenic RV strains, we have assessed the …

Changing Patterns And Outcome Of Dengue Infection; Report From A Tertiary Care Hospital In Pakistan, Mohammad Wasay, Roomasa Channa, Maliha Jumani, Afia Zafar

Department of Medicine

Objective: To identify predictors of outcome in patients with Dengue Infections at a tertiary care hospital and to analyze that if pattern of Dengue infection is changing in the past two years.

Methods: We reviewed 225 cases of confirmed dengue virus infection. The diagnosis was confirmed by presence of IgM antibodies against Dengue by ELISA in addition to fever according to WHO criteria.

Results: From years 2000-2004, 30(73%) had Dengue Fever (DF), 10(24%) had Dengue Haemorrhagic Fever (DHF) and 1(2.4%) had Dengue shock syndrome (DSS) while after 2005, 107(58%) had DF, 71(39%) had DHF and 6(3%) had DSS. Six …

Characterization Of Kaposi's Sarcoma-Associated Herpesvirus Orf11 As A Possible Dutpase, Christina N. Ramirez

Seton Hall University Dissertations and Theses (ETDs)

A dUTPase is a crucial enzyme that hydrolyzes dUTP to dUMP. This reaction prevents the mutagenic or lethal misincorporation of uracil into DNA. For that reason, the enzyme is required for efficient DNA replication. Previous studies have shown that has ORFl l dUTPase-like motifs and thus may be a dUTPase. Generally, gammaherpesviruses contain six characteristic dUTPase motifs. In particular ORFl 1 and contains motifs 1, 2, 4, 6. While the characteristic motifs of gamroaberpesviruses include motifs 1, 2, 3, 4, 5, and 6, the number of dUTPase-like motifs in ORFl 1 's protein sequence is substantial. Thus, ORFl 1 may …

Predictors Of Depressive And Anxiety Symptoms Among African American Hiv-Positive Women, Nina Katherine Sublette

Theses and Dissertations (ETD)

This descriptive correlation study had four purposes: describe depressive and anxiety symptom levels in pregnant and non-pregnant African American (AA) HIV-positive women, examine the association between underlying vulnerabilities and depressive symptoms in HIV-positive AA women, determine the association between underlying vulnerabilities and anxiety symptoms in AA HIV-positive women, and determine the predictors of depressive and anxiety symptoms among African American HIV-positive women. A convenience sample of 80 African American HIV-positive women was recruited from university-based obstetrics/-gynecology and infectious disease practices in a large metropolitan city in the Mid-South. Depressive symptoms were measured with the Center for Epidemiologic Studies Depression Scale …

Analysis Of The Cyc1 Promoter In Candida Albicans, Tomica Blocker

McCabe Thesis Collection

Scientists are considering two factors that may be important in the pathogenesis of C. albicans', it's capability to morph from yeast to hyphal phase, and its differences in colony morphology, cell shape, cell surface and cell permeability. (5) Unfortunately, unlike the bacteria, yeasts do not yet have proven virulence factors. However, science is suggesting that some of the major factors which contribute to the virulence of Candida are its ability to form hyphae, its ability to resist phagocytosis, its ability to adhere to epithelial cell surfaces, its ability to grow well at 37 degrees Celsius, and its ability to secrete …

Tetanus And Rabies Eradication In Pakistan; A Mission Not Impossible, Mohammad Wasay, Ismail A. Khatri, Naseem Salahuddin

Department of Medicine

No abstract provided.

Inside Unlv, Shane Bevell, Donna Mcaleer, David Ashley, Grace Russell, Michelle Mouton, Mamie Peers

Inside UNLV

No abstract provided.

Inside Unlv, Cate Weeks, Grace Russell, David Ashley, Shane Bevell, Angela Sablan

Inside UNLV

No abstract provided.

An Open Study To Assess The Safety And Efficacy Of Heprovac-B Vaccine 10 Mcg-Dose For Adults, Hasnain Ali Shah, Wasim Jafri

Section of Gastroenterology

Heprovac B is a novel recombinant vaccine. There are many vaccines available in Pakistani market but Heprovac B claims to be immunogenic even at 10 meg dose. Aim of the study is to determine whether using 10 meg of Heprovac B vaccine is safe and effective in producing sufficient immunity in Pakistani population. One hundred and twenty five subjects, who fulfilled the Inclusion criteria, were enrolled for the study. Heprovac B was administered in a three-dose regimen given at 0, 1 and 6 months and adverse events were recorded. Immunogenicity was tested by measuring hepatitis B surface antibody one month …

Consentement Éclairé Dans Les Essais De Prévention Du Vih: Points Saillants D'Un Atelier International, Population Council

HIV and AIDS

Résumé adapté du rapport de l'atelier co-organisé par le Population Council et Family Health International en mai 2005. Le résumé se concentre spécifiquement sur les outils et stratégies présentés lors de l'atelier qui sont utilisés dans les essais de prévention du VIH pour faciliter le consentement éclairé, expliquer concepts difficiles et évaluer la compréhension parmi les participants à l'essai. Des exemples illustratifs d'essais achevés et en cours sont mis en évidence. Ce résumé sera utile à un public de chercheurs locaux, d'avocats et de membres du personnel des essais cliniques.

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Brief adapted from the report of the workshop co-hosted …

Situation Analysis Of The Integration Of Family Planning Services In Postpartum, Postabortion And Prevention Of Mother To Child Transmission Programs In Nicaragua, Freddy Solis, Ana Del Carmen Rojas, Gadea Adilia, M. Estela Rivero-Fuentes, Ricardo Vernon

Reproductive Health

Between September 2005 and April 2007, FRONTIERS and Alva, a Nicaraguan consulting firm, conducted a situation analysis of the provision and use of contraceptive services in postpartum, postabortion and prevention of mother-to-child transmission of HIV (PMTCT) programs. The project‘s objective was to assess the degree to which contraceptive services were linked to postpartum, postabortion and PMTCT services and if this allowed the programs to meet the contraceptive needs of their clients. The project proposes recommendations for improving the quality of these programs.

A Comprehensive Analysis Of The Naturally Occurring Polymorphisms In Hiv-1 Vpr: Potential Impact On Ctl Epitopes., Alagarsamy Srinivasan, Velpandi Ayyavoo, Sundarasamy Mahalingam, Aarthi Kannan, Anne Boyd, Debduti Datta, Vaniambadi S Kalyanaraman, Anthony Cristillo, Ronald G Collman, Nelly Morellet, Bassel E Sawaya, Ramachandran Murali

Department of Microbiology and Immunology Faculty Papers

The enormous genetic variability reported in HIV-1 has posed problems in the treatment of infected individuals. This is evident in the form of HIV-1 resistant to antiviral agents, neutralizing antibodies and cytotoxic T lymphocytes (CTLs) involving multiple viral gene products. Based on this, it has been suggested that a comprehensive analysis of the polymorphisms in HIV proteins is of value for understanding the virus transmission and pathogenesis as well as for the efforts towards developing anti-viral therapeutics and vaccines. This study, for the first time, describes an in-depth analysis of genetic variation in Vpr using information from global HIV-1 isolates …

School As A Workplace In Kenya: Evaluation Of The Teachers Matter Hiv/Aids Project, Karusa Kiragu, Caroline Mackenzie, Jennifer Weiss, Murungaru Kimani, Debbie Gachuhi

HIV and AIDS

The Horizons program of the Population Council embarked on an operations research initiative in Kenya to test the feasibility of implementing a teacher-centered workplace program based in schools. The study was conducted in partnership with the Ministry of Education, the Kenya Institute of Education, the Teachers Service Commission, and UNICEF. Called Teachers Matter, the project’s main audience was primary and secondary school teachers. The purpose of the research was to assess whether such a program would improve teachers’ HIV-related knowledge, attitudes, and behaviors; increase the proportion of teachers seeking voluntary testing and counseling; and enhance their ability to cope with …

Is It Feasible To Integrate Alcohol-Related Risk Reduction Counseling Into Vct Services? Findings From Kenya, Caroline Mackenzie, Karusa Kiragu, George Odingo, Rukia Yassin, Peter Shikuku, Patrick Angala, Nduku Kilonzo, William Sinkele, Melania Akinyi

HIV and AIDS

In Kenya, an estimated 30 percent of men report to be alcohol users which may be fueling the HIV pandemic, due to its association with high-risk sexual behavior and reduced inhibitions. The Population Council’s Horizons program collaborated on a study to improve screening of clients for alcohol use, provision of feedback of screening results, and referrals to care and support during voluntary testing and counseling (VCT) for HIV. Overall, the results indicate that it is feasible to integrate alcohol risk reduction counseling into VCT, and that it is generally accepted by providers and clients alike. This study therefore supports the …

Improving Hospital-Based Quality Of Care In Vietnam By Reducing Hiv-Related Stigma And Discrimination, Khuat Thi Hai Oanh, Kim Ashburn, Julie Pulerwitz, Jessica Ogden, Laura Nyblade

HIV and AIDS

To address HIV-related stigma and discrimination, and improve the quality of care in the healthcare setting in Vietnam, the Institute for Social and Development Studies, the International Center for Research on Women, and the Horizons Program conducted intervention research in four hospitals. The study team conceptualized two fundamental causes of HIV-related stigma: 1) fear of casual transmission; and 2) negative values/social judgments and associations between HIV and certain behaviors and groups, such as sex workers and injecting drug users. Both intervention strategies successfully reduced stigma and discrimination toward HIV-positive patients in these healthcare settings. The findings show that addressing stigma …

Sexual And Reproductive Health Needs Of Adolescents Perinatally Infected With Hiv In Uganda, Harriet Birungi, John Frank Mugisha, Juliana K. Nyombi, Francis Obare, Humphres Evelia, Hannington Nyinkavu

Reproductive Health

In Uganda, HIV/AIDS treatment, care and support programs are still organized around either adult or pediatric care and fail to adequately address the needs of adolescents, specifically perinatally-infected adolescents. This study, implemented jointly by the Population Council's Frontiers in Reproductive Health (FRONTIERS) program and the AIDS Support Organization (TASO), aimed to better understand the reproductive health and sexuality of this population group, and to identify anxieties or fears they have around entering social stages of adulthood. This study confirms that wide programmatic gaps exist in addressing the sexual and reproductive health needs of young people perinatally infected with HIV who …

Hiv-1 Tat Protein Alter The Tight Junction Integrity And Function Of Retinal Pigment Epithelium: An In Vitro Study., Ling Bai, Zhenping Zhang, Hui Zhang, Xiumei Li, Qiurong Yu, Haotian Lin, Wenhui Yang

Department of Medicine Faculty Papers

BACKGROUND: How HIV-1 enter into the eyes remains obscure. We postulated that HIV-1 Tat protein can alter the expression of specific tight-junction proteins and disturb the blood retinal barrier, and contributes to HIV trafficking into the eyes. This study is to determine the effects of HIV-1 Tat proteins on the barrier function and tight-junction protein expression of retinal pigment epithelial cell (RPE). METHODS: A human RPE cell line (D407) cultured on microporous filter-supports was used. After treating with HIV-1 Tat protein, transepithelial electrical resistance (TER) of confluent RPE cells was measured by epithelial voltmeter. The permeability of the RPE cells …

Informed Consent In Hiv Prevention Trials: Highlights From An International Workshop, Population Council

HIV and AIDS

Brief adapted from the report of the workshop co-hosted by the Population Council and Family Health International in May 2005. The brief focuses specifically on tools and strategies presented at the workshop that are being used in HIV-prevention trials to facilitate informed consent, explain difficult concepts, and assess comprehension among trial participants. Illustrative examples from completed and ongoing trials are highlighted. This brief will be useful for an audience of local researchers, advocates, and clinical trial staff.

Repositioning Postnatal Care In A High Hiv Environment: Swaziland, Charlotte E. Warren, Rachel Shongwe, Allen Waligo, Mohammed Mahdi, Goldy Mazia, Indira Narayanan

HIV and AIDS

This Horizons report from the Swaziland Ministry of Health and Social Welfare discusses findings from an intervention which aimed to reposition postnatal care within the context of a high HIV prevalence environment. The objectives were to determine if changes to the sexual and reproductive health guidelines on postnatal care would result in the timely and quality provision of key components of essential maternal and newborn care in the postnatal period, increase utilization of postnatal care services among all postpartum women, and improve the care and follow up of HIV-positive postpartum women and their infants. The study confirms that the introduction …

Sexual Behavior And Sti/Hiv Status Among Adolescents In Rural Malawi: An Evaluation Of The Effect Of Interview Mode On Reporting, Barbara Mensch, Paul C. Hewett, Richard Gregory, Stephane Helleringer

Poverty, Gender, and Youth

This paper presents the results from an interview-mode experiment conducted by the Population Council with unmarried young women in rural southern Malawi. To collect data on sexual behavior and the dynamics of HIV transmission, respondents were randomly assigned to either an audio computer-assisted self-interview (ACASI) or a conventional face-to-face (FTF) interview. Clear evidence indicates that the mode of interviewing and probing concerning various sexual partnerships affects respondents’ reporting of their sexual activity, yet the results are not always in accordance with expectations. Reporting for “ever had sex” and “sex with a boyfriend” is higher in the FTF mode, whereas, when …

Has The Hiv Epidemic Peaked?, John Bongaarts, Thomas Buettner, Gerhard Heilig, Francois Pelletier

Poverty, Gender, and Youth

This working paper reviews the highly diverse regional and country patterns of HIV epidemics and discusses possible causes of the geographic variation in epidemic sizes. The main finding of this analysis is that the HIV epidemic reached a major turning point over the past decade. The peak years of HIV incidence rates are past for all regions, and the peaks of prevalence rates are mostly in the past except in Eastern Europe, where it is expected to peak in 2008. But owing in part to the life-prolonging effect of antiretroviral therapy and to sustained population growth, the absolute number of …

Do Hospitalists Or Physicians With Greater Inpatient Hiv Experience Improve Hiv Care In The Era Of Highly Active Antiretroviral Therapy? Results From A Multicenter Trial Of Academic Hospitalists, John A. Schneider, Qi Zhang, Andrew Auerbach, David Gonzales, Peter Kaboli, Jeffrey Schnipper, Tosha B. Wetterneck, David L. Pitrak, David O. Meltzer

Community & Environmental Health Faculty Publications

Background. Little is known about the effect of provider type and experience on outcomes, resource use, and processes of care of hospitalized patients with human immunodeficiency virus (HIV) infection. Hospitalists are caring for this population with increasing frequency.

Methods. Data from a natural experiment in which patients were assigned to physicians on the basis of call cycle was used to study the effects of provider type—that is, hospitalist versus non hospitalist—and HIV-specific inpatient experience on resource use, outcomes, and selected measures of processes of care at 6 academic institutions. Administrative data, inpatient interviews, 30-day follow-up interviews, and the National Death …

Assessment Of Risk Factors For Hiv Infection Among Men Who Have Sex With Men In The Metropolitan Area Of Campinas City, Brazil, Using Respondent-Driven Sampling, Maeve De Mello, Adriana De Araujo Pinho, Magda Chinaglia, Waimar Tun, Aristides Barbosa Junior, Maria Cristina, F.J. Ilario, Paulo Reis, Regina C.S. Salles, Suzanne Westman, Juan Diaz

HIV and AIDS

The Population Council, in collaboration with the Brazil Ministry of Health, the Municipal Program of STD/AIDS of Campinas, and the US Centers for Disease Control and Prevention/Global AIDS Program/Brazil, conducted a study to characterize the sociodemographic, behavioral, and environmental factors associated with subgroups of MSM who are most at risk for HIV infection. This research is the first Brazilian study to provide population-based estimates for HIV, syphilis, and HIV-related risk behaviors using an innovative sampling technique to reach members of the target population. Our data suggest the importance for HIV prevention programs to address not only sexual risk reduction, but …

If You Build It, Will They Come? Kenya Healthy Start Pediatric Hiv Study: A Diagnostic Study Investigating Barriers To Hiv Treatment And Care Among Children, Karusa Kiragu, Katie D. Schenk, Julie Murugi, Avina Sarna

HIV and AIDS

In Kenya the proportion of eligible HIV-positive children receiving ART treatment is only 11 percent. This study explored and documented possible barriers in the community to accessing pediatric HIV testing and treatment, to guide the development of new interventions to encourage uptake. The study identified barriers such as cost, use of traditional healers, low knowledge of treatment options, attitudinal barriers, stigma, unique treatment issues, and dissatisfaction with available services. Additionally, healthcare workers missed opportunities to provide services and cited numerous service-side challenges. The study recommends prioritizing community awareness, mobile clinics, strengthening capacity of healthcare workers, supporting family-based HIV testing, and …