Skip Navigation
 
 
 
 xxx
JHU NIMH photo banner
 
Print This Page
Share this page: More
 

The Johns Hopkins NIMH Center for Novel Therapeutics of HIV-associated Cognitive Disorders

The Johns Hopkins NIMH Center comprises an interdisciplinary research team who has pooled their talents to study the nature of HIV-associated neurocognitive disorders (HAND). Their aim is to translate discoveries of the pathophysiological mechanisms into novel therapeutics for HAND.


EDUCATION

Neurologic Complications and Considerations in HIV-Infected Persons

McArthur J1, Smith B
Curr Infect Dis Rep. 2013 Feb;15(1):61-6. doi: 10.1007/s11908-012-0312-2.

Abstract: Neurologic complications for HIV-infected persons retain significant prevalence despite an increasingly global use of antiretroviral therapies. Such complications are often ascribed to advanced immunosuppression; however, the most common neurologic problems for HIV-infected persons, distal sensory polyneuropathy and HIV-associated neurocognitive disorders, affect a significant proportion of patients who have successfully achieved immunologic restoration with normal or near-normal CD4 count levels and undetectable HIV RNA in the periphery. Understanding specificconsiderations for HIV-associated complications, including the epidemiology, risk factors, medication-adverse effects, and benefits of appropriate management, is vital for all providers caring for those with HIV. This review will describe such considerations, as well as providing a more detailed review of the most common neurologic complications of HIV infection, and will highlight some of the challenges involved with diagnosis, management, and long-term effects.
Article-Hand
Fig. 1: Different mechanisms (cerebrovascular disease, amyloid deposition, and comorbidities) for varied age groups may contribute to decreased brain reserve that promulgates HIV-associated neurocognitive disorders. Courtesy of Ned Sacktor, MD


PUBLICATIONS

Featured Publications

Identification of Putative Biomarkers for HIV-associated Neurocognitive Impairment in the CSF of HIV-infected Patients under cART Therapy Determined by Mass Spectrometry

Bora AUbaida Mohien CChaerkady RChang LMoxley R 4thSacktor NHaughey NMcArthur JCCotter RNath AGraham DR.
Journal of Neuroviology. 2014. 20(5):457-465

Abstract: We identified and measured proteins in the cerebral spinal fluid (CSF) involved in HIV-associated neurological disorders. Protein levels were determined by mass spectrometry (MS) in pooled CSF taken from three patient groups (human immunodeficiency virus (HIV)-1-infected patients that developed HIV-associated neurocognitive disorders (HANDs), HIV-1-infected patients without HAND, and healthy controls). Pools were generated from 10 patients each per group. CSF from individual patient groups were digested with trypsin and separately labeled using with isobaric tags for relative and absolute quantitation (iTRAQ). After combining all samples in one, peptides were extensively fractionated by offline two-dimensional separation and identified by tandem MS. One hundred and ninety three proteins were deemed to be interpretable for quantitation based on permutation tests with a 95 % confidence interval with a p value ≤ 0.05. Using a cutoff of 1.5-fold for upregulation and 0.6 for downregulation, 16 proteins were differentially expressed in HIV + HAND (reporter p value ≤0.05) with seven of them previously described as HIV-interacting proteins: endoplasmin, mitochondrial damage mediator-BH3-interacting domanin death agonist, orosomucoid, apolipoprotein E, metalloproteinase inhibitor 2, peroxiredoxin-2, and the nuclear protein, ruvB-like 2. Several previously unidentified proteins with possible neurological implication in HIV patients include forming-binding protein 1, C-reactive protein, leukocyte-associated immunoglobulin receptor 1, renin receptor, mediator of RNA polymerase II transcription subunit 14, multimerin-2, alpha-N-acetylglucosaminidase, caldesmon, and cadherin EGF LAG G-type receptor. Our results suggest that not only a few but possibly a combination of biomarkers that are highly correlated can predict neurocognitive status in HIV-infected patients and might be involved in monocyte or macrophage activation.

Controversies in HIV-associated Neurocognitive Disorders

Nightingale S, Winston A, Letendre S, Michael BD, McArthur JC, Khoo S, Solomon T
Lancet Neurol. 2014 Nov; 13(11):1139-1151

Abstract: Cross-sectional studies show that around half of individuals infected with HIV-1 have some degree of cognitive impairment despite the use of antiretroviral drugs. However, prevalence estimates vary depending on the population and methods used to assess cognitive impairment. Whether asymptomatic patients would benefit from routine screening for cognitive diffculties is unclear and the appropriate screening method and subsequent management is the subject of debate. In some patients, HIV-1 RNA can be found at higher concentrations in CSF than in blood, which potentially results from the poor distribution of antiretroviral drugs into the CNS. However, the clinical relevance of so-called CSF viral escape is not well understood. The extent to which antiretroviral drug distribution and toxicity in the CNS affect clinical decision making is also debated.
HAND article
Figure 3: Summary of the Frascati criteria for HIV-associated neurocognitive disorders


PODCAST

Featured Podcast
Broadcasted: October 2014

Clinical and ethical judgment: A profound dilemma

Highlight: The second part of this podcast includes an interview by NIMH Center Director, Justin McArthur, MBBS, MPH, FAAN, discussing salient and clinically relevant features of HIV and its neurologic complications.

Listen to the podcast: Clinical and ethical judgment: A profound dilemma


JHU NIMH CENTER AND COLLABORATOR EVENTS

Webcast URL’s for the Annual NeuroHIV Symposium's morning and afternoon sessions held on Friday, June 19th, 2015:

MORNING: http://webcast.jhu.edu/Mediasite/Play/b19d1594d1e747eab487d5139c594f781d
AFTERNOON: http://webcast.jhu.edu/Mediasite/Play/1e1ae153973b4e31b682348e265849151d

  • Johns Hopkins Faculty and Guest Lecturers present their work at these regularly scheduled conferences:
    • Neuroimmunology Seminar Series: Tuesdays (varies), 1:30 p.m., Meyer 1-191 (Resumes September 2015)
    • NeuroAIDS Lecture Series: Every Friday, 11 a.m., Meyer 8 Library (Resumes September 2015)
       
  • Collaborator Events:

TEAMWORK

group photo of NIMH faculty
JHU NIMH Center Directors, investigators, and staff

SUPPORT

The Johns Hopkins Center for Novel Therapeutics of HIV-associated Cognitive Disorders is funded by the National Institute of Mental Health, NIMH Grant P30MH075673

Learn more about the NIMH: National Institute of Mental Health / Research on HIV and AIDS

 

The Johns Hopkins NIMH Center newsletter

Clinical Perspectives

HANSA 2011 Presentations

View a presentation by Dr Justin McArthur entitled "NeuroAIDS Research Needs in the Era of HAART."
Learn more.

Out-of-State and International Patients - Find Out More

 
 
 
 
 

© The Johns Hopkins University, The Johns Hopkins Hospital, and Johns Hopkins Health System. All rights reserved.