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hiv clinical specimen

Sikhulile Moyo, Terence Mohammed, Kathleen E Wirth, Melanie Prague, Kara Bennett, Molly Pretorius Holme, Lucy Mupfumi, Philemon Sebogodi, Natasha O Moraka, Corretah Boleo, Comfort N Maphorisa, Boitumelo Seraise, Simani Gaseitsiwe, Rosemary M Musonda, Erik van Widenfelt, Kathleen M Powis, Tendani Gaolathe, Eric J Tchetgen Tchetgen, Joseph M Makhema, Max Essex, Shahin Lockman, Vladimir Novitsky
BACKGROUND: Routine monitoring of HIV-1 RNA, or viral load (VL) in patients on antiretroviral therapy (ART) is important, but there are multiple impediments to VL testing in resource-constrained settings. An accurate point-of-care (POC) HIV-1 VL test could alleviate many of these challenges. METHODS: We compared the performance of the Cepheid Xpert® HIV-1 VL against the laboratory-based Abbott m2000sp/m2000rt assay (Abbot assay). ART-naïve individuals participating in the Botswana Combination Prevention Project in 20 communities provided EDTA blood specimens during household surveys...
October 12, 2016: Journal of Clinical Microbiology
Eileen M Burd, Christina L Dean
Individuals with inherited immunodeficiencies, autoimmune disorders, organ or bone marrow transplantation, or infection with human immunodeficiency virus (HIV) are at increased risk of infection with both low-risk and high-risk human papillomavirus (HPV) types. Chronic immunosuppression provides an environment for persistent HPV infection which carries a higher risk of malignant transformation. Screening guidelines have been developed or advocated for processes that have detectable premalignant lesions, such as anal cancer or cervical cancer...
August 2016: Microbiology Spectrum
Dina Tsukrov, Alicia McFarren, Alfred Morgenstern, Frank Bruchertseifer, Eugene Dolce, Miroslaw K Gorny, Susan Zolla-Pazner, Joan W Berman, Ellie Schoenbaum, Barry S Zingman, Arturo Casadevall, Ekaterina Dadachova
Eliminating virally infected cells is an essential component of any HIV eradication strategy. Radioimmunotherapy (RIT), a clinically established method for killing cells using radiolabeled antibodies, was recently applied to target HIV-1 gp41 antigen expressed on the surface of infected cells. Since gp41 expression by infected cells is likely downregulated in patients on antiretroviral therapy (ART), we evaluated the ability of RIT to kill ART-treated infected cells using both in vitro models and lymphocytes isolated from HIV-infected subjects...
2016: Frontiers in Medicine
Winai Chaidaroon, Sumet Supalaset
PURPOSE: To describe corneal ring infiltrates caused by Serratia marcescens in a patient with human immunodeficiency virus (HIV-1) who wore contact lenses. METHODS: A case study of a patient with keratitis due to an infection caused by S. marcescens and exhibiting corneal ring infiltrates was reviewed for history, clinical manifestation, microscopic study, and management. RESULTS: A 29-year-old man who had a history of contact lens wear and HIV-1 infection was admitted to hospital because of blurred vision, redness, and corneal infiltrates in the shape of a ring in the left eye...
May 2016: Case Reports in Ophthalmology
Xu Qian, Duc T M Nguyen, Yaojun Li, Jianxin Lyu, Edward A Graviss, Tony Y Hu
BACKGROUND: There is an urgent need for methods that can rapidly and accurately assess therapeutic responses in patients with active tuberculosis (TB) in order to predict treatment outcomes. Exposure to bacterial pathogens can rapidly activate the plasma contact system, triggering the release of bradykinin (BK) and its metabolite desArg(9)-bradykinin (DABK) to induce inflammation and innate immune responses. We hypothesized that serum BK and DABK levels might act as sensitive immune response signatures for changes in Mycobacterium tuberculosis (Mtb) burden, and therefore examined how serum levels of these markers corresponded with anti-TB therapy in a small cohort of active TB cases...
September 28, 2016: Tuberculosis
Rômulo Pessoa-E-Silva, Lays Adrianne Mendonça Trajano-Silva, Maria Almerice Lopes da Silva, Suênia da Cunha Gonçalves-de-Albuquerque, Tayná Correia de Goes, Rayana Carla Silva de Morais, Fábio Lopes de Melo, Milena de Paiva-Cavalcanti
The availability of some sorts of biological samples which require noninvasive collection methods has led to an even greater interest in applying molecular biology on visceral leishmaniasis (VL) diagnosis, since these samples increase the safety and comfort of both patients and health professionals. In this context, this work aimed to evaluate the suitability of the urine as a specimen for Leishmania infantum kinetoplast DNA detection by real-time quantitative PCR (qPCR). Subsequent to the reproducibility analysis, the detection limit of the qPCR assay was set at 5fg (~0...
October 3, 2016: Journal of Microbiological Methods
Barrett J Nehilla, John J Hill, Selvi Srinivasan, Yen-Chi Chen, Thomas H Schulte, Patrick S Stayton, James J Lai
Magnetic microbeads exhibit rapid separation characteristics and are widely employed for biomolecule and cell isolations in research laboratories, clinical diagnostics assays, and cell therapy manufacturing. However, micrometer particle diameters compromise biomarker recognition, which leads to long incubation times and significant reagent demands. Here, a stimuli-responsive binary reagent system is presented that combines the nanoscale benefits of efficient biomarker recognition and the microscale benefits of rapid magnetic separation...
October 14, 2016: Analytical Chemistry
Kenneth K Mugwanya, Craig W Hendrix, Nelly R Mugo, Mark Marzinke, Elly T Katabira, Kenneth Ngure, Nulu B Semiyaga, Grace John-Stewart, Timothy R Muwonge, Gabriel Muthuri, Andy Stergachis, Connie L Celum, Jared M Baeten
BACKGROUND: As pre-exposure prophylaxis (PrEP) becomes more widely used in heterosexual populations, an important consideration is its safety in infants who are breastfed by women taking PrEP. We investigated whether tenofovir and emtricitabine are excreted into breast milk and then absorbed by the breastfeeding infant in clinically significant concentrations when used as PrEP by lactating women. METHODS AND FINDINGS: We conducted a prospective short-term, open-label study of daily oral emtricitabine-tenofovir disoproxil fumarate PrEP among 50 HIV-uninfected breastfeeding African mother-infant pairs between 1-24 wk postpartum (ClinicalTrials...
September 2016: PLoS Medicine
Cathy Logan, Kathryn Todorof, Suzanne P Fiorillo, Thomas B Campbell, John H Elder, Margaret Borok, Ivy Gudza, Lovemore Gwanzura, Buxton Ndemera, Michael J Lochhead, Constance A Benson, Robert T Schooley
Diagnosis of KSHV-infected individuals remains a challenge. KSHV prevalence is high in several populations with high prevalence of HIV, leading to increased risk of development of Kaposi's sarcoma (KS). While current assays are reliable for detecting antibodies to KSHV, none are routinely utilized to identify individuals with KSHV infection and thus at increased risk for KS due to assay complexity, lack of access to testing, and cost, particularly in resource-limited settings. Here we describe the addition of KSHV proteins LANA and K8...
2016: PloS One
Santiago Ávila-Ríos, Claudia García-Morales, Margarita Matías-Florentino, Karla A Romero-Mora, Daniela Tapia-Trejo, Verónica S Quiroz-Morales, Helena Reyes-Gopar, Hezhao Ji, Paul Sandstrom, Jesús Casillas-Rodríguez, Juan Sierra-Madero, Eddie A León-Juárez, Marisol Valenzuela-Lara, Carlos Magis-Rodríguez, Patricia Uribe-Zuñiga, Gustavo Reyes-Terán
BACKGROUND: WHO has developed a global HIV-drug resistance surveillance strategy, including assessment of pretreatment HIV-drug resistance. We aimed to do a nationally representative survey of pretreatment HIV-drug resistance in Mexico using WHO-recommended methods. METHODS: Among 161 Ministry of Health antiretroviral therapy (ART) clinics in Mexico, the largest, including 90% of ART initiators within the Ministry of Health (66 in total), were eligible for the survey...
September 14, 2016: Lancet HIV
Susanna L Lamers, Rebecca Rose, David J Nolan, Gary B Fogel, Andrew E Barbier, Marco Salemi, Michael S McGrath
Kaposi's sarcoma (KS) in HIV-infected individuals can have a wide range of clinical outcomes, from indolent skin tumors to a life-threatening visceral cancer. KS tumors contain endothelial-related cells and inflammatory cells that may be HIV-infected. In this study we tested if HIV evolutionary patterns distinguish KS tumor relatedness and progression. Multisite autopsies from participants who died from HIV-AIDS with KS prior to the availability of antiretroviral therapy were identified at the AIDS and Cancer Specimen Resource (ACSR)...
2016: Sarcoma
Ganiyu Amusa, Babatunde Awokola, Godsent Isiguzo, James Onuh, Samuel Uguru, David Oke, Solomon Danbauchi, Basil Okeahialam
OBJECTIVE: To evaluate the prevalence of Hypertension and associated risk factors in HIV+ adults and assessment of these risks using the Framingham risk score 'FRS'. DESIGN AND METHOD: A cross-sectional analytical study. One hundred and fifty consecutive HIV+ adults presenting at the HIV clinic of Jos University Teaching Hospital (90 on HAART) with 50 HIV- as controls were recruited. Relevant history, physical examination (including blood pressure measured according to standard guidelines), laboratory specimen (fasting plasma sugar and lipids, CD4 count and viral load) and electrocardiogram were obtained from the participants...
September 2016: Journal of Hypertension
Richard A Crosby, Laura F Salazar, Leandro Mena, Angelica Geter
OBJECTIVE: To assess internalized homophobia (IH) and its relationship to sexual risk behaviors and prevalence of sexually transmitted infection (STIs) in a clinic-based sample of young black men who have sex with men (YBMSM). METHODS: Six hundred YBMSM completed a self-interview and provided specimens for testing. A 7-item scale assessed IH, and 19 sexual risk behaviors were assessed. RESULTS: In adjusted models, compared with men with less IH, those with greater IH were more likely to report: any condomless anal receptive sex (P = 0...
October 2016: Sexually Transmitted Diseases
Tara J Wu, Karen Smith-McCune, Miriam Reuschenbach, Magnus von Knebel Doeberitz, May Maloba, Megan J Huchko
OBJECTIVE: A biomarker with increased specificity for cervical dysplasia compared with human papillomavirus (HPV) testing would be an attractive option for cervical cancer screening among HIV-infected women in resource-limited settings. p16(INK4a) has been explored as a biomarker for screening in general populations. DESIGN: A 2-year cross-sectional study. SETTING: 2 large HIV primary care clinics in western Kenya. PARTICIPANTS: 1054 HIV-infected women in western Kenya undergoing cervical cancer screening as part of routine HIV care from October 2010 to November 2012...
September 13, 2016: BMJ Open
Kelly A Curtis, Donna L Rudolph, Daphne Morrison, Dylan Guelig, Steven Diesburg, David McAdams, Robert A Burton, Paul LaBarre, Michele Owen
Early and accurate diagnosis of HIV is key for the reduction of transmission and initiation of patient care. The availability of a rapid nucleic acid test (NAT) for use at the point-of-care (POC) will fill a gap in HIV diagnostics, improving the diagnosis of acute infection and HIV in infants born to infected mothers. In this study, we evaluated the performance of non-instrumented nucleic acid amplification, single-use disposable (NINA-SUD) devices for the detection of HIV-1 in whole blood using reverse-transcription, loop-mediated isothermal amplification (RT-LAMP) with lyophilized reagents...
November 2016: Journal of Virological Methods
Johann Wilhelm Schneider, Micheline Sanderson, Dieter Geiger, Mostafa Nokta, Sylvia Silver
Sub-Saharan Africa has one of the highest incidences of infection with HIV globally, but more people in this region are living longer owing to increased access to antiretroviral therapy. However, along with increased care and treatment, this population is expected to have an increase in HIV-associated cancers, as is being seen in the USA and other developed countries. To support translational research in HIV-associated cancers, Stellenbosch University in Cape Town, South Africa, was funded to house the state-of-the-art AIDS and Cancer Specimen Resource Sub-Saharan Africa Regional Biorepository (SSA RBR) to proactively obtain, manage and process biospecimens and associated clinical data representing both AIDS-defining and non-AIDS-defining cancers for research...
September 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
Hyeoneui Kim, Elizabeth Bell, Jihoon Kim, Amy Sitapati, Joe Ramsdell, Claudiu Farcas, Dexter Friedman, Stephanie Feudjio Feupe, Lucila Ohno-Machado
BACKGROUND: Implementation of patient preferences for use of electronic health records for research has been traditionally limited to identifiable data. Tiered e-consent for use of de-identified data has traditionally been deemed unnecessary or impractical for implementation in clinical settings. METHODS: We developed a web-based tiered informed consent tool called informed consent for clinical data and bio-sample use for research (iCONCUR) that honors granular patient preferences for use of electronic health record data in research...
September 2, 2016: Journal of the American Medical Informatics Association: JAMIA
Inga Veličko, Alexander Ploner, Pär Sparén, Lena Marions, Björn Herrmann, Sharon Kühlmann-Berenzon
BACKGROUND: Genital chlamydia infection (chlamydia) is the most commonly reported sexually transmitted infection (STI) in Sweden. To guide prevention needs, we aimed to investigate factors associated with chlamydia. METHODS: A cohort of visitors aged 20-40 years at an urban STI clinic in Sweden was recruited. Behavioural data were collected using a self-administered questionnaire. Self-sampled specimens were tested for chlamydia by a DNA amplification assay. Statistically significant (p<0...
2016: BMJ Open
Etienne E Müller, Kevin Rebe, Tobias F Chirwa, Helen Struthers, James McIntyre, David A Lewis
BACKGROUND: We investigated the prevalence of human papillomavirus (HPV) infection and associated behavioural risk factors in men-who-have-sex-with-men (MSM) attending a clinical service in Cape Town, South Africa. METHODS: MSM were enrolled at the Ivan Toms Centre for Men's Health in Cape Town. A psychosocial and sexual behavioral risk questionnaire was completed for each participant and urine, oro-pharyngeal and anal swabs were collected for HPV testing using the Linear Array HPV Genotyping Test...
2016: BMC Infectious Diseases
Donna J Ingles, Hui-Yi Lin, William J Fulp, Staci L Sudenga, Beibei Lu, Matthew B Schabath, Mary R Papenfuss, Martha E Abrahamsen, Jorge Salmeron, Luisa L Villa, Eduardo Lazcano Ponce, Anna R Giuliano
OBJECTIVES: Genital HPV infection in men causes benign and cancerous lesions, the incidence of which differs by age. The goal of this work was to comprehensively evaluate incidence and clearance of individual HPV genotypes among men by age group. METHODS: HIV-negative men ages 18-70 with no history of anogenital cancer were recruited for the HPV Infection in Men (HIM) Study. Participants completed clinical exams and questionnaires every six months for up to ~4 years...
December 2015: Papillomavirus Research
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