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hiv genotyping

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https://www.readbyqxmd.com/read/28938026/hiv-exposed-seronegative-hesn-compared-to-hiv-infected-individuals-have-higher-frequencies-of-telomeric-killer-immunoglobulin-like-receptor-kir-b-motifs-contribution-of-kir-b-motif-encoded-genes-to-nk-cell-responsiveness
#1
Elise Jackson, Cindy Xinyu Zhang, Zahra Kiani, Irene Lisovsky, Benjamin Tallon, Alexa Del Corpo, Louise Gilbert, Julie Bruneau, Réjean Thomas, Pierre Côté, Benoit Trottier, Roger LeBlanc, Danielle Rouleau, Cécile Tremblay, Christos M Tsoukas, Jean-Pierre Routy, Xiaoyan Ni, Tsoarello Mabanga, Nicole F Bernard
Previously, we showed that Killer Immunoglobulin-like Receptor (KIR)3DS1 homozygotes (hmz) are more frequent in HIV exposed seronegative (HESN) than in recently HIV infected (HIV+) individuals. KIR3DS1 encodes an activating Natural Killer (NK) cell receptor (NKR). The link between KIR genotype and HIV outcomes likely arises from the function that NK cells acquire through expression of particular NKRs. An initial screen of 97 HESN and 123 HIV+ subjects for the frequency of KIR region gene carriage observed between-group differences for several telomeric KIR region loci...
2017: PloS One
https://www.readbyqxmd.com/read/28934422/low-frequency-of-acquired-isoniazid-and-rifampicin-resistance-in-rifampicin-susceptible-pulmonary-tuberculosis-in-a-setting-of-high-hiv-1-infection-and-tuberculosis-coprevalence
#2
Neesha Rockwood, Frederick Sirgel, Elizabeth Streicher, Robin Warren, Graeme Meintjes, Robert J Wilkinson
Background: We estimated the incidence of acquired isoniazid and rifampicin resistance in rifampicin-susceptible tuberculosis in a setting of high human immunodeficiency virus type 1 (HIV-1) infection and tuberculosis coprevalence. Methods: GeneXpert MTB/RIF-confirmed patients with rifampicin-susceptible tuberculosis were recruited at antituberculosis treatment initiation in Khayelitsha, South Africa. Liquid culture and adherence assessment were performed at 2 and 5-6 months...
September 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931406/validation-of-a-questionnaire-to-monitor-symptoms-in-hiv-infected-patients-during-hepatitis-c-treatment
#3
Edward R Cachay, Craig Ballard, Bradford Colwell, Francesca Torriani, Charles Hicks, Wm Christopher Mathews
BACKGROUND: Clinicians are incorporating patient-reported outcomes in the management of HIV-infected persons co-infected with hepatitis C virus (HCV), but there are no validated inventories to monitor symptoms of patients during HCV therapy. DESIGN: Five-year retrospective cohort analysis of persons living with HIV (PLWH) treated for HCV. METHODS: The HCV symptom-inventory (HCV-SI) was administered before, during, and after HCV treatment. Discriminant validity was assessed, separately, in mixed model linear regression of HCV-SI T-scores on treatment regimens (pegylated-interferon and ribavirin; pegylated-interferon, ribavirin, and telaprevir; and interferon-free antivirals); and side effect-related premature treatment discontinuation (SE-DC)...
September 20, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28931234/the-evva-cohort-study-anal-and-cervical-type-specific-human-papillomavirus-prevalence-persistence-and-cytologic-findings-in-women-living-with-hiv
#4
Alexandra de Pokomandy, Elaina Kaufman, Christina de Castro, Marie-Hélène Mayrand, Ann N Burchell, Marina Klein, Louise Charest, Manon Auger, Sophie Rodrigues-Coutlée, François Coutlée
Background: The risk of anal cancer due to high-risk human papillomavirus (HR-HPV) is higher in women living with human immunodeficiency virus (HIV) than in the general population. We present findings of cervical and anal HPV and cytologic tests at baseline in the EVVA cohort study and HPV persistence data 6 months after baseline. Methods: Semiannual visits included questionnaires, chart reviews, cervical/anal cytologic and cervical/anal HPV testing for 2 years...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28923290/use-of-adult-sensory-panel-to-study-individual-differences-in-the-palatability-of-a-pediatric-hiv-treatment-drug
#5
Julie A Mennella, Phoebe S Mathew, Elizabeth D Lowenthal
PURPOSE: The recommended first-line treatment for young children infected with HIV includes the liquid formulation of the co-formulated protease inhibitors lopinavir/ritonavir (Kaletra(®) [Abbott Laboratories, Chicago, Illinois]). Clinical reports indicate that some children readily accept the taste of Kaletra, whereas others strongly reject it, which can deter therapeutic adherence and outcomes. METHODS: As a proof-of-concept approach, a sensory panel of genotyped adults was used to document the range of individual differences in the taste and palatability (hedonics) of the liquid formulation of Kaletra and other taste stimuli, including common excipients...
September 15, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28921677/clinical-profile-of-hepatitis-c-virus-infection-in-a-developing-country-india
#6
Ramit Mahajan, Vandana Midha, Omesh Goyal, Varun Mehta, Vikram Narang, Kirandeep Kaur, Arshdeep Singh, Dharmatma Singh, Rishu Bhanot, Ajit Sood
BACKGROUND: The epidemiology and clinical profile of hepatitis C virus (HCV) varies worldwide and data from developing countries is sparse. AIMS: To study the clinical profile of HCV infection in a developing country in South East Asia (India). METHODS: This observational study assessed patient demographics, viral characteristics, risk factors for virus acquisition and disease characteristics in HCV patients diagnosed between January 2004 and December 2015...
September 18, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28918303/decoding-noises-in-hiv-computational-genotyping
#7
MingRui Jia, Timothy Shaw, Xing Zhang, Dong Liu, Ye Shen, Amara E Ezeamama, Chunfu Yang, Ming Zhang
Lack of a consistent and reliable genotyping system can critically impede HIV genomic research on pathogenesis, fitness, virulence, drug resistance, and genomic-based healthcare and treatment. At present, mis-genotyping, i.e., background noises in molecular genotyping, and its impact on epidemic surveillance is unknown. For the first time, we present a comprehensive assessment of HIV genotyping quality. HIV sequence data were retrieved from worldwide published records, and subjected to a systematic genotyping assessment pipeline...
September 14, 2017: Virology
https://www.readbyqxmd.com/read/28910359/prevalence-and-determinants-of-oral-infection-by-human-papillomavirus-in-hiv-infected-and-uninfected-men-who-have-sex-with-men
#8
Francesca Rollo, Alessandra Latini, Barbara Pichi, Manuela Colafigli, Maria Benevolo, Ilenia Sinopoli, Isabella Sperduti, Valentina Laquintana, Giulia Fabbri, Mirko Frasca, Antonio Cristaudo, Massimo Giuliani, Maria Gabriella Donà
BACKGROUND: Oral Human Papillomavirus (HPV) infection is rare in the general population but common in high-risk individuals. Recent data indicate that oral HPV is associated with the development of head and neck carcinomas. HPV16 infection, in particular, increases the risk of oropharyngeal cancer. METHODS: We evaluated oral HPV prevalence and determinants of infection in cancer-free HIV-infected and uninfected men who have sex with men (MSM) recruited among attendees of an STI/HIV centre...
2017: PloS One
https://www.readbyqxmd.com/read/28910347/high-hpgv-replication-is-associated-with-improved-surrogate-markers-of-hiv-progression
#9
Gibran Horemheb-Rubio, Pilar Ramos-Cervantes, Hugo Arroyo-Figueroa, Santiago Ávila-Ríos, Claudia García-Morales, Gustavo Reyes-Terán, Galileo Escobedo, Gloria Estrada, Trinidad García-Iglesias, Nayeli Muñoz-Saucedo, David Kershenobich, Patricia Ostrosky-Wegman, Guillermo M Ruiz-Palacios
BACKGROUND: Human Pegivirus (HPgV) may have a beneficial effect on HIV disease progression in co-infected patients; however, the virologic characteristics of this infection are not well defined. In this study, we determined HPgV viremia prevalence in Mexico and provide new insights to understand HPgV infection and HPgV/HIV co-infection. METHODS: We analyzed and quantified 7,890 serum samples for HPgV viremia by One-Step RT-Real-Time PCR, 6,484 from healthy blood donors and 1,406 from HIV-infected patients...
2017: PloS One
https://www.readbyqxmd.com/read/28910308/pulmonary-hypertension-among-5-to-18-year-old-children-with-sickle-cell-anaemia-in-nigeria
#10
Ogochukwu J Sokunbi, Ekanem N Ekure, Edamisan O Temiye, Roosevelt Anyanwu, Christy A N Okoromah
BACKGROUND: Pulmonary hypertension (PHT) is a significant cause of mortality in patients with sickle cell disease (SCD). Few studies on PHT in SCD have been carried out in children. This study aimed to estimate the prevalence of PHT in children with sickle cell anaemia (SCA) and determine its clinical and laboratory correlates. METHODS: In this cross sectional study, evaluation involved obtaining bio-data, history and physical examination findings in 175 SCA subjects with haemoglobin genotype SS aged 5 to 18 years and 175 age and sex matched controls with haemoglobin genotype AA...
2017: PloS One
https://www.readbyqxmd.com/read/28906006/prevalence-of-anal-oral-penile-and-urethral-human-papillomavirus-in-hiv-infected-and-hiv-uninfected-men-who-have-sex-with-men
#11
Claudio Ucciferri, Manuela Tamburro, Katia Falasca, Michela Lucia Sammarco, Giancarlo Ripabelli, Jacopo Vecchiet
Aims of the study were to evaluate Human Papillomavirus (HPV) and type-specific prevalence in four anatomical sites in HIV infected men who have sex with men (MSM) compared with HIV uninfected MSM. Participants were recruited among the attendees of Infectious Diseases Clinics in Central Italy. A trained medical practitioner collected by interview sociodemographic data and information on medical history, sexual behavior and drug use. Swabs from anal canal, oral cavity, urethral mucosa and coronal sulcus were tested for HPV DNA and genotyping...
September 14, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28902922/molecular-clustering-of-patients-with-diabetes-and-pulmonary-tuberculosis-a-systematic-review-and-meta-analysis
#12
Francles Blanco-Guillot, Guadalupe Delgado-Sánchez, Norma Mongua-Rodríguez, Pablo Cruz-Hervert, Leticia Ferreyra-Reyes, Elizabeth Ferreira-Guerrero, Mercedes Yanes-Lane, Rogelio Montero-Campos, Miriam Bobadilla-Del-Valle, Pedro Torres-González, Alfredo Ponce-de-León, José Sifuentes-Osornio, Lourdes Garcia-Garcia
INTRODUCTION: Many studies have explored the relationship between diabetes mellitus (DM) and tuberculosis (TB) demonstrating increased risk of TB among patients with DM and poor prognosis of patients suffering from the association of DM/TB. Owing to a paucity of studies addressing this question, it remains unclear whether patients with DM and TB are more likely than TB patients without DM to be grouped into molecular clusters defined according to the genotype of the infecting Mycobacterium tuberculosis bacillus...
2017: PloS One
https://www.readbyqxmd.com/read/28902678/brief-report-high-need-to-switch-cart-or-comedication-with-the-initiation-of-daas-in-elderly-hiv-hcv-coinfected-patients
#13
Elise J Smolders, Colette Smit, Clara T M M de Kanter, Anton S M Dofferiiof, Joop E Arends, Kees Brinkman, Bart Rijnders, Marc van der Valk, Peter Reiss, David M Burger
BACKGROUND: To describe the use of nonantiretroviral comedication and combination antiretroviral therapy (cART) in patients coinfected with HIV/hepatitis C virus (HCV) and to predict the potential for drug-drug interactions (DDIs) with direct-acting antivirals (DAAs) against HCV. METHODS: This is a retrospective, cross-sectional study, using the Dutch, nationwide ATHENA observational HIV cohort database. All patients with a known HIV/HCV coinfection on January 1, 2015, were included...
October 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28899424/clade-homogeneity-and-low-rate-of-delta-virus-despite-hyperendemicity-of-hepatitis-b-virus-in-ethiopia
#14
Yeshambel Belyhun, Uwe Gerd Liebert, Melanie Maier
BACKGROUND: Although hepatitis B virus (HBV) is hyperendemic and heterogeneous in its genetic diversity in Ethiopia, little is known about hepatitis D virus (HDV) circulating genotypes and molecular diversity. METHODS: A total of 321 hepatitis B surface antigen (HBsAg) positives (125 HIV co-infected, 102 liver disease patients and 94 blood donors) were screened for anti-HDV antibody. The anti-HDV positive sera were subjected to Real time PCR for HDV-RNA confirmation...
September 12, 2017: Virology Journal
https://www.readbyqxmd.com/read/28899102/community-based-antiretroviral-treatment-in-rural-zimbabwe
#15
Benjamin Chimukangara, Justen Manasa, Rebecca Mitchell, Georgina Nyabadza, David Katzenstein, Collen Masimirembwa
INTRODUCTION: Treatment of HIV has reduced HIV/AIDS-related mortality. Sustaining >90% virologic suppression in sub-Saharan Africa requires decentralized care and prevention services to rural communities. In Zimbabwe, the number of people receiving ART has increased rapidly. However, access to treatment monitoring tools such as viral load and drug resistance testing is limited. We assessed virologic treatment outcomes among ART recipients in Nyamutora, a rural community receiving bimonthly ART and prevention services...
September 13, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28893321/prevalence-and-trends-in-transmitted-and-acquired-antiretroviral-drug-resistance-washington-dc-1999-2014
#16
Annette M Aldous, Amanda D Castel, David M Parenti
BACKGROUND: Drug resistance limits options for antiretroviral therapy (ART) and results in poorer health outcomes among HIV-infected persons. We sought to characterize resistance patterns and to identify predictors of resistance in Washington, DC. METHODS: We analyzed resistance in the DC Cohort, a longitudinal study of HIV-infected persons in care in Washington, DC. We measured cumulative drug resistance (CDR) among participants with any genotype between 1999 and 2014 (n = 3411), transmitted drug resistance (TDR) in ART-naïve persons (n = 1503), and acquired drug resistance (ADR) in persons with genotypes before and after ART initiation (n = 309)...
September 11, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28893287/natural-killer-nk-cell-receptor-hla-ligand-genotype-combinations-associated-with-protection-from-hiv-infection-investigation-of-how-protective-genotypes-influence-anti-hiv-nk-cell-functions
#17
REVIEW
Nicole F Bernard
The anti-HIV activity of natural killer (NK) cells could be induced fast enough to potentially prevent the establishment of HIV infection. Epidemiological studies identified two genotypes encoding NK receptors that contribute to NK cell function, that were more frequent in people who remained uninfected despite multiple HIV exposures than in HIV-susceptible subjects. NK cells from carriers of the *h/*y+B*57 genotype have higher NK cell functional potential and inhibit HIV replication in autologous HIV-infected CD4+ T cells (iCD4) more potently than those from carriers of non-protective genotypes...
September 12, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28891788/week-48-resistance-analysis-of-elvitegravir-cobicistat-emtricitabine-tenofovir-df-versus-atazanavir-ritonavir-emtricitabine-tenofovir-df-in-hiv-1-infected-women-waves-study-gs-us-236-0128
#18
Rima Kulkarni, Sally L Hodder, Huyen Cao, Silvia Chang, Michael D Miller, Kirsten L White
Background Women and those with non-B subtype HIV-1 are typically underrepresented in clinical trials. WAVES (GS-US-236-0128) was a double-blind phase 3b study among treatment-naïve HIV-1-infected women that demonstrated that elvitegravir/cobicistat/emtricitabine/tenofovir DF (EVG/COBI/FTC/TDF; N = 289) was superior to atazanavir + ritonavir + FTC/TDF (ATV + RTV + FTC/TDF; N = 286) for HIV-1 RNA < 50 copies/mL by FDA snapshot analysis at week 48. Here, we describe resistance development through week 48 in women with virologic failure and determine the impact of pre-existing mutations and HIV-1 subtype on viral suppression...
July 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/28890504/an-alarmingly-high-proportion-of-anti-retroviral-drugs-resistant-hiv-1-infection-among-high-risk-groups-in-central-vietnam-a-sub-study-of-the-national-sentinel-survey
#19
Hung Thai Do, Dong Thanh Nguyen, Lan Anh Thi Nguyen, Duong Huy Do, Huy Xuan Le, Xuan Mai Thi Trinh, Hong Vy Nu Ton, Ikumi Sawada, Noriko Kitamura, Nhat Minh Le, Keisuke Yoshihara, Thu Huong Thi Phan, Chien Trong Bui, Koya Ariyoshi, Lay Myint Yoshida
We investigated the prevalence of HIV drug resistance among high risk groups such as injecting drug user (IDU), female sex worker (FSW) and men having sex with men (MSM) in central Vietnam. We used HIV positive samples from 2012-2013 sentinel surveillance surveys. Study subjects were screened for HIV infection by standardized screening assays and the positive samples were further tested for HIV viral load and drug resistant mutations by in-house assays. Drug resistant mutations (DRMs) were determined using the Stanford University online sequence analysis tool...
September 11, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28886044/genetic-variants-in-cyp2b6-and-cyp2a6-explain-interindividual-variation-in-efavirenz-plasma-concentrations-of-hiv-infected-children-with-diverse-ethnic-origin
#20
Sandra Soeria-Atmadja, Emma Österberg, Lars L Gustafsson, Marja-Liisa Dahl, Jaran Eriksen, Johanna Rubin, Lars Navér
BACKGROUND: Approximately 2.6 million children live with HIV globally, and efavirenz (EFV) is one of the most widely used antiretroviral agents for HIV treatment in children and adults. There are concerns about the appropriateness of current EFV dosing and it has been discussed whether EFV dosing should be adapted according to genotype in children as suggested for adults. AIM: To investigate if pediatric EFV dosing should be guided by genetic variation in drug metabolizing enzymes rather than by body weight...
2017: PloS One
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