Evidence map›Paper›PMID 22217676›Full record

ArticleJournal of acquired immune deficiency syndromes (1999)2012

Low cerebrospinal fluid concentrations of the nucleotide HIV reverse transcriptase inhibitor, tenofovir.

Brookie M Best, Scott L Letendre, Peter Koopmans, Steven S Rossi, David B Clifford, Ann C Collier, Benjamin B Gelman, Christina M Marra, Justin C McArthur, J Allen McCutchan and 6 more

Abstract read
In one paragraph

Article in Journal of acquired immune deficiency syndromes (1999), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 84 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Pharmacology of HIV Cure: Site of Action.Clinical pharmacology and therapeutics · 2021
    Review
  15. Associations between Antiretroviral Drugs on Depressive Symptomatology in Homogenous Subgroups of Women with HIV.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2021
    Article
  16. Article
  17. Article
  18. Review
  19. Switching to Tenofovir Alafenamide in Elvitegravir-Based Regimens: Pharmacokinetics and Antiviral Activity in Cerebrospinal Fluid.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2020
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 7 institutions in 2 countries.

Brookie M BestSkaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, CA 92093-0719, USA. brookie@ucsd.edu
Scott L Letendre
Peter Koopmans
Steven S Rossi
David B Clifford
Ann C Collier
Benjamin B Gelman
Christina M Marra
Justin C McArthur
J Allen McCutchan
Susan Morgello
David M Simpson
Edmund V Capparelli
Ronald J Ellis
Igor Grant
CHARTER Study Group
University of California, San Diego · USUniversity of Washington · USWashington University in St. Louis · USRadboud University Medical Center · NLRadboud University Nijmegen · NLRady Children's Hospital-San Diego · USThe University of Texas Medical Branch at Galveston · US

Funding

STRUCTURAL NEUROIMAGING COREP30MH062512 · NIMH · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DAVID J MOORE · 2001 to 2026
$50.4M
MOUNT SINAI INSTITUTES FOR CLINICAL AND TRANSLATIONAL SCIENCESUL1RR029887 · NCRR · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI SAMPSON, HUGH A · 2009 to 2011
$19.2M
Pediatric Pharmacology Research Unit NetworkU10HD031318 · NICHD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CAPPARELLI, EDMUND VINCENT · 2004 to 2009
$2.1M
CNS HIV ANTI-RETROVIRAL THERAPY EFFECTS RESEARCH /CHARTER/ -278022005-278022005N01MH022005 · NIMH · UNIVERSITY OF CA -SAN DIEGO · PI GRANT, IGOR · 2003 to 2006
–
NCRR NIH HHS UL1 RR029887NICHD NIH HHS 5U10 HD031318NICHD NIH HHS U10 HD031318NIMH NIH HHS N01 MH022005
6 · The paper itself

Abstract

backgroundTenofovir is a nucleotide HIV reverse transcriptase inhibitor whose chemical properties suggest that it may not penetrate into the central nervous system in therapeutic concentrations. The study's objective was to determine tenofovir's penetration into cerebrospinal fluid (CSF).

methodsCNS HIV Antiretroviral Therapy Effects Research is a multicenter observational study to determine the effects of antiretroviral therapy on HIV-associated neurological disease. Single random plasma and CSF samples were drawn within an hour of each other from subjects taking tenofovir between October 2003 and March 2007. All samples were assayed by mass spectrometry with a detection limit of 0.9 ng/mL.

resultsOne hundred eighty-three participants (age 44 ± 8 years; 83 ± 32 kg; 33 females; CSF protein 44 ± 16 mg/dL) had plasma and CSF samples drawn 12.2 ± 6.9 and 11 ± 7.8 hours post dose, respectively. Median plasma and CSF tenofovir concentrations were 96 ng/mL [interquartile range (IQR) 47-153 ng/mL] and 5.5 ng/mL (IQR 2.7-11.3 ng/mL), respectively. Thirty-four of 231 plasma (14.7%) and 9 of 77 CSF samples (11.7%) were below detection. CSF to plasma concentration ratio from paired samples was 0.057 (IQR 0.03-0.1; n = 38). Median CSF to wild-type 50% inhibitory concentration ratio was 0.48 (IQR 0.24-0.98). Seventy-seven percent of CSF concentrations were below the tenofovir wild-type 50% inhibitory concentration. More subjects had detectable CSF HIV with lower (≤ 7 ng/mL) versus higher (>7 ng/mL) CSF tenofovir concentrations (29% versus 9%; P = 0.05).

conclusionsTenofovir concentrations in the CSF are only 5% of plasma concentrations, suggesting limited transfer into the CSF, and possibly active transport out of the CSF. CSF tenofovir concentrations may not effectively inhibit viral replication in the CSF.

Indexed as

AdenineAdultCohort StudiesFemaleHIV Reverse TranscriptaseHumansMaleMiddle AgedOrganophosphonatesReverse Transcriptase InhibitorsTenofovirAdenineHIV Reverse TranscriptaseOrganophosphonatesReverse Transcriptase InhibitorsTenofovir

Identifiers

PMID22217676
PMCPMC3299895
OpenAlexW2093880239

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.