State of the Art in HIV Drug Resistance: Science and Technology Knowledge Gap.

Resistance to antiretroviral therapy (ART) threatens the efficacy of human immunodeficiency virus type 1 (HIV-1) treatment. We present a review of knowledge gaps in the science and technologies of acquired HIV-1 drug resistance (HIVDR) in an effort to facilitate research, scientific exchange, and progress in clinical management. The expert authorship of this review convened to identify data gaps that exist in the field of HIVDR and discuss their clinical implications.

State of the Art in HIV Drug Resistance: Surveillance and Regional Gaps.

This article is the second of a two-part review aiming to identify gaps in the knowledge and management of human immunodeficiency virus type 1 drug resistance (HIVDR) from global and regional perspectives. Here, we examine the policy and programmatic gaps in HIVDR surveillance, the affected populations and settings, and implications for clinical practice. The expert authorship of this review convened to identify gaps in HIVDR surveillance, with a particular focus on specific regional variations within and between Europe and Asia, to highlight directions for research and implementation.

A uniquely prevalent nonnucleoside reverse transcriptase inhibitor resistance mutation in Russian subtype A HIV-1 viruses.

Background: The subtype A variant in the Former Soviet Union (A(FSU)) causes most of Russia's HIV-1 infections. However, the spectrum of drug-resistance mutations (DRMs) in antiretroviral experienced patients with this variant has not been studied.

Methods: Between 2010 and 2013, genotypic resistance testing was performed on plasma samples from 366 antiretroviral-experienced patients in Siberia.

Epidemiological networks and drug resistance of HIV type 1 in Krasnoyarsk region, Russia.

To study the molecular epidemiology of HIV-1 in Krasnoyarsk region, Russia, where HIV-1 has spread rapidly since 2000, we obtained pol sequences from individuals living in this region (n = 67) as well as in the geographically closely related Altay region (n = 13). In both regions, subtype A viruses specific for the former Soviet Union (IDU-A strains) were dominant (92.5%).

An HIV type 1 subtype A outbreak among injecting drug users in Kazakhstan.

Kazakhstan experienced the start of the HIV-1 outbreak among intravenous drug users (IDUs) in 1997. To characterize genetically HIV-1 strains circulating in this country, peripheral blood mononuclear cells (PBMCs) DNA samples (1999-2002) derived from HIV-infected IDUs and their sexual partners in Pavlodar (n = 19), Shymkent (n = 6), and Qaraghandy (n = 18) regions were analyzed by the gag/env heteroduplex mobility assay (HMA). The 366-bp proviral env gene fragments encoding the gp120 C2-V3 region obtained from 16 individuals were sequenced.

Temporal trends in the HIV-1 epidemic in Russia: predominance of subtype A.

During the period 1996-1997, three highly homogeneous variants of HIV-1 were identified, circulating among injecting drug users (IDUs) in the former Soviet Union republics. One of these belonged to HIV-1 genetic subtype A (IDU-A), another belonged to HIV-1 genetic subtype B (IDU-B) and the third was a recombinant between the first two variants (CRF03_AB). However, since 1997, the HIV-1 epidemic has affected an increasing number of geographic regions in Russia.

Prevalence of alleles associated with HIV resistance in Russia.

Genetic polymorphisms of CCR5, CCR2, and SDF1 genes have been associated with resistance during human immunodeficiency virus type 1 (HIV-1) infection and disease progression. In the present report, we studied the frequency and co-occurrence of CCR5Delta32, CCR5-59029A/G, CCR2-64I, and SDF1-3'A allelic variants among HIV-1-seronegative individuals (n = 171) in Moscow. Observed allelic frequencies were 0.