Citalopram treatment of major depressive disorder in Hispanic HIV and AIDS patients: a prospective study

Therapeutically targeting the consequences of HIV-1-associated gastrointestinal dysbiosis: Implications for neurocognitive and affective alterations

Approximately 50 % of the individuals living with human immunodeficiency virus type 1 (HIV-1) are plagued by debilitating neurocognitive impairments (NCI) and/or affective alterations. Sizeable alterations in the composition of the gut microbiome, or gastrointestinal dysbiosis, may underlie, at least in part, the NCI, apathy, and/or depression observed in this population. Herein, two interrelated aims will be critically addressed, including: 1) the evidence for, and functional implications of, gastrointestinal microbiome dysbiosis in HIV-1 seropositive individuals; and 2) the potential for therapeutically targeting the consequences of this dysbiosis for the treatment of HIV-1-associated NCI and affective alterations. First, gastrointestinal microbiome dysbiosis in HIV-1 seropositive individuals is characterized by decreased alpha (α) diversity, a decreased relative abundance of bacterial species belonging to the Bacteroidetes phylum, and geographic-specific alterations in Bacillota (formerly Firmicutes) spp. Fundamentally, changes in the relative abundance of Bacteroidetes and Bacillota spp. may underlie, at least in part, the deficits in γ-aminobutyric acid and serotonin neurotransmission, as well as prominent synaptodendritic dysfunction, observed in this population. Second, there is compelling evidence for the therapeutic utility of targeting synaptodendritic dysfunction as a method to enhance neurocognitive function and improve motivational dysregulation in HIV-1. Further research is needed to determine whether the therapeutics enhancing synaptic efficacy exert their effects by altering the gut microbiome. Taken together, understanding gastrointestinal microbiome dysbiosis resulting from chronic HIV-1 viral protein exposure may afford insight into the mechanisms underlying HIV-1-associated neurocognitive and/or affective alterations; mechanisms which can be subsequently targeted via novel therapeutics.

HIV Associated Neurocognitive Disorders Subsidence Through Citalopram Addition in Anti-retroviral Therapy (HANDS-CARE): A Concept Note

There is a pressing need to effectively manage HIV Associated Neurocognitive Disorders (HAND) in sub-Saharan Africa (SSA) where the burden is among the highest in the world. Contemporary approaches based on the use of Highly Active Antiretroviral Therapy (HAART) alone are inadequate interventions for HAND, especially in SSA where there is limited availability of the required combinations of HAART for effective central nervous system penetration and where many currently prescribed agents, including efavirenz, have neurotoxicity as a major drawback. This article reviews data supporting the rationale for additive citalopram in antiretroviral therapy as a latent approach to abate HAND. It proposes the conduct of a HIV Associated Neurocognitive Disorders Subsidence through Citalopram addition in Anti-Retroviral therapy (HANDS-CARE) pilot feasibility trial (RCT) to assess whether the adjunctive use of citalopram, a widely prescribed serotonergic antidepressant, will lead to a meaningful improvement in neurocognitive functioning and quality of life in patients with HAND who are receiving HAART. A preliminarily feasible and efficacy-suggesting HANDS-CARE trial could generate statistical, clinical and operational data necessary to design and conduct a future definitive RCT. If successful, this intervention will be applicable to resource-limited settings as well as developed countries. Effective management of HAND will improve the quality of life of HIV patients, and reduce the cost of managing the disease.

Clinical outcomes and genome-wide association for a brain methylation site in an antidepressant pharmacogenetics study in Mexican Americans

OBJECTIVE

The authors compared the effectiveness of fluoxetine and desipramine treatment in a prospective double-blind pharmacogenetics study in first-generation Mexican Americans and examined the role of whole-exome functional gene variations in the patients' antidepressant response.

METHOD

A total of 232 Mexican Americans who met DSM-IV criteria for major depressive disorder were randomly assigned to receive 8 weeks of double-blind treatment with desipramine (50-200 mg/day) or fluoxetine (10-40 mg/day) after a 1-week placebo lead-in period. Outcome measures included the Hamilton Depression Rating Scale (HAM-D), the Hamilton Anxiety Rating Scale, and the Beck Depression Inventory. At week 8, whole-exome genotyping data were obtained for 36 participants who remitted and 29 who did not respond to treatment.

RESULTS

Compared with desipramine treatment, fluoxetine treatment was associated with a greater reduction in HAM-D score, higher response and remission rates, shorter time to response and remission, and lower incidences of anticholinergic and cardiovascular side effects. Pharmacogenetics analysis showed that exm-rs1321744 achieved exome-wide significance for treatment remission. This variant is located in a brain methylated DNA immunoprecipitation sequencing site, which suggests that it may be involved in epigenetic regulation of neuronal gene expression. This and two other common gene variants provided a highly accurate cross-validated predictive model for treatment remission of major depression (receiver operating characteristic integral=0.95).

CONCLUSIONS

Compared with desipramine, fluoxetine treatment showed a more rapid reduction of HAM-D score and a lower incidence of side effects in a population comprising primarily first-generation Mexican Americans with major depression. This study's pharmacogenetics approach strongly implicates the role of functional variants in antidepressant treatment response.

Treatment of depression in individuals living with HIV/AIDS

BACKGROUND

Depression is common in patients with HIV/AIDS, and can have an impact on quality of life, as well as various health outcomes. This study was designed to observe the efficacy of standard treatment of depression in human immunodeficiency virus (HIV) (+) individuals in an urban psychiatric clinic.

METHODS

This study consisted of a retrospective chart review of patients presenting for psychiatric services between January 1, 2008 and December 31, 2010. A total of 211 charts were examined for factors including diagnosis given at initial visit, health status, sociodemographic factors and comorbid illnesses, as well as treatment plan prescribed; of these, 132 patients were determined to be depressed at the initial evaluation (Beck Depression Inventory (BDI> 13) and to return for at least one follow-up visit.

RESULTS

Of the 132 depressed patients, 48 (36.4%) reached remission (BDI <13) at some point at follow-up, and an additional 12 (50.7%) achieved response (decrease in BDI of 50%). Remission correlated with having disability income and having a viral load that was not detectable.

CONCLUSIONS

Depression is common in HIV/AIDS, and is important to treat. Furthermore, individuals with depression and HIV/AIDS respond at rates similar to what is seen in other depressed populations.

Pharmacotherapy considerations in patients with HIV and psychiatric disorders: focus on antidepressants and antipsychotics

OBJECTIVE

To review the evidence for the efficacy and safety of pharmacologic agents for the treatment of depressive and psychotic disorders in patients with HIV infection and to provide clinical considerations for the treatment of depression and psychosis in these patients.

DATA SOURCES

PubMed was searched for articles published between 1966 and August 1, 2012, using the search terms antiretrovirals, HIV, AIDS, depression, psychosis, schizophrenia, antidepressant, antipsychotic, and individual drug names (fluoxetine, sertraline, paroxetine, citalopram, escitalopram, venlafaxine, duloxetine, mirtazapine, bupropion, haloperidol, perphenazine, fluphenazine, aripiprazole, asenapine, clozapine, iloperidone, lurasidone, olanzapine, paliperidone, quetiapine, risperidone, ziprasidone).

STUDY SELECTION AND DATA EXTRACTION

For the purposes of evaluating efficacy data, we limited our selection to randomized placebo-controlled or active comparator-controlled trials for agents that have been used for depression and psychosis in HIV-infected patients.

DATA SYNTHESIS

We found 11 studies for depression treatment and 1 study for psychosis treatment that met our inclusion and exclusion criteria. Selective serotonin reuptake inhibitors (SSRIs; especially fluoxetine) and tricyclic antidepressants appear to be effective in treating depressive symptoms in patients with HIV infection without affecting immune status. Testosterone, stimulants, and dehydroepiandrosterone may also be effective in subsyndromal depression; however, studies on these agents in general were limited by small sample size. There are limited data for antipsychotics, with the only controlled study found for haloperidol and chlorpromazine used for AIDS delirium. Drug-drug interactions and potentiation of metabolic syndrome are concerns for the combined use of antidepressants and antipsychotics with antiretrovirals.

CONCLUSIONS

Larger controlled studies are needed to validate the current findings as well as expand knowledge for non-SSRI antidepressants and second-generation antipsychotics for use in HIV-infected patients.

The impact of DSM-IV mental disorders on adherence to combination antiretroviral therapy among adult persons living with HIV/AIDS: a systematic review

This is a systematic review of eighty-two published studies investigating the impact of DSM-IV mental disorders on combination antiretroviral therapy (cART) adherence and persistence among persons living with HIV/AIDS (PLWHA). Sixty-two articles examined depression, with 58 % (N = 32/62) finding lower cART adherence and persistence. Seventeen articles examined one or more anxiety disorders, with the majority finding no association with cART adherence or persistence. Eighty percent of the studies that evaluated the impact of psychotic (N = 3), bipolar (N = 5) and personality disorders (N = 2) on cART adherence and persistence also found no association. Seven out of the nine studies (78 %) evaluating the impact of antidepressant treatment (ADT) on cART adherence found improvement. Adherence and depression measurements varied significantly in studies; common research measurements would improve data harmonization. More research specifically addressing the impact of other mental disorders besides depression on cART adherence and RCTs evaluating ADT on cART adherence are also needed.

Measuring depression levels in HIV-infected patients as part of routine clinical care using the nine-item Patient Health Questionnaire (PHQ-9)

Little is known about the psychometric properties of depression instruments among persons infected with HIV. We analyzed data from a large sample of patients in usual care in two US cities (n=1467) using the nine-item Patient Health Questionnaire (PHQ-9) from the PRIME-MD. The PHQ-9 had curvilinear scaling properties and varying levels of measurement precision along the continuum of depression measured by the instrument. In our cohort, the scale showed a prominent floor effect and a distribution of scores across depression severity levels. Three items had differential item functioning (DIF) with respect to race (African-American vs. white); two had DIF with respect to sex; and one had DIF with respect to age. There was minimal individual-level DIF impact. Twenty percent of the difference in mean depression levels between African-Americans and whites was due to DIF. While standard scores for the PHQ-9 may be appropriate for use with individual HIV-infected patients in cross-sectional settings, these results suggest that investigations of depression across groups and within patients across time may require a more sophisticated analytic framework.

Treatment considerations for psychiatric syndromes associated with HIV infection

Psychiatric syndromes associated with HIV disease were recognized early in the AIDS epidemic. Public education, new technologies and antiretroviral therapies have resulted in earlier recognition and therapautic interventions of HIV infection, improving the physical health for individuals living with HIV. While HIV-associated psychiatric symptoms have been recognized for more than 20 years, our understanding of the mechanisms underlying psychiatric symptoms among HIV-infected individuals and treatments for these symptoms have not kept pace with advances in HIV therapies. In this article, we discuss current knowledge of the psychiatric symptoms occurring with HIV disease, specifically mood, anxiety and psychotic disorders, evidence-based treatments and treatment considerations, new strategies for the treatments of psychiatric symptoms in HIV disease are also discussed.

Depression and HIV/AIDS

HIV/AIDS continues to be a significant public health problem. Millions of people worldwide are infected with this virus daily, and thousands die yearly of AIDS-related illnesses. Despite rapid advances in our knowledge about HIV and its mode of transmission, we have been unable to find a cure or prevent new infections. Psychiatric comorbidity is associated with HIV/AIDS: as a risk factor for HIV infection, a comorbidity of HIV infection, sequelae of HIV/AIDS, and a potential mediator for progression to AIDS. In this article, we focus on depression, which is prevalent in HIV/AIDS. We review the evidence associating depression with HIV, the challenges in recognizing depression in HIV-positive individuals, and the psychopharmacologic strategies known to be effective in the treatment of HIV-positive individuals with depression.

Psychopharmacology in HIV-infected patients

Neuropsychiatric disorders and syndromes may be underdiagnosed and inadequately treated in individuals infected with HIV. Depression in particular is among the most prevalent diagnoses, and data from controlled clinical studies have shown that antidepressant medications are efficacious and safe for treating depression in HIV-infected persons. A significant shortcoming of this literature is that most of the available data are from studies conducted before the advent of highly active antiretroviral therapy. In addition, apart from antidepressant medications, controlled studies systematically assessing efficacy and safety issues for other classes of psychotropic drugs (e.g., antipsychotic and anxiolytic medications) in HIV-infected persons are lacking. This review summarizes essential findings pertaining to the use of psychotropic medications to treat depression and other neuropsychiatric disorders in the context of HIV. It includes a discussion of clinically relevant treatment considerations (e.g., side effects, drug-drug interactions) derived from the existing literature as well as judgments that clinicians face in the absence of research data. Despite some shortcomings of the existing literature, overall there is compelling evidence that the appropriate use of psychotropic medications (coupled with behavioral therapy) can improve the quality of life of mentally ill HIV-infected individuals.

Treatment of depression in HIV positive individuals: a critical review

The primary goal of this paper is to provide a critical review of the literature on treatment of depression in HIV/AIDS. There is a substantial research literature documenting the efficacy of conventional antidepressants, particularly selective serotonin reuptake inhibitors (SSRIs), novel agents such as dehydroepiandrosterone, psychostimulants and some psychotherapies, particularly interpersonal and group psychotherapy for the treatment of depression in HIV. However, lack of comparative studies makes it difficult to draw a firm consensus regarding the best course of treatment. In devising a treatment plan, clinicians should take into account stage of HIV illness, co-morbid illnesses such as Hepatitis B and C, the potential for drug interactions with antiretroviral and other medications used to treat HIV and patient preference.

Klinik, Diagnostik und Therapie HIV-induzierter neuropsychiatrischer Störungen

Since the acquired immune deficiency syndrome (AIDS) was first recognized in 1981, more than 25 million individuals have died from complications of the human immunodeficiency virus (HIV) infection. The introduction of highly active antiretroviral therapy (HAART) in 1995 has resulted in a significantly decreased incidence rate of AIDS in the developed world. As HAART led to considerable improvements in survival for patients with HIV infection, HIV-neurotropically associated neuropsychiatric disorders have become an increasingly important challenge for clinical medicine. This article gives an overview of epidemiology, clinical features, diagnosis, and therapy of HIV-induced cognitive-motor impairments including HIV-associated dementia complex, organic mood disorders and psychosis.

Human immunodeficiency virus and depression in primary care: a clinical review

BACKGROUND

Human immunodeficiency virus (HIV)-infected individuals are at increased risk of developing depression. Depressive syndromes in these patients pose a challenge both diagnostically and therapeutically. These syndromes reflect both the presence of preexisting mood disorders and the development of depressive syndromes subsequent to HIV infection.

DATA SOURCES

A search of the literature to 2005 was performed using the PubMed and Ovid search engines. English- and Portuguese-language articles were identified using the following keywords: HIV or AIDS and depression, mental illness, suicide, fatigue, psychiatry, and drug interactions. Additional references were identified through bibliography reviews of relevant articles.

DATA SYNTHESIS

The clinical presentation and differential diagnosis of depressive symptoms in HIV illness and the role of HIV in the development of these conditions are reviewed. Management issues including suicide assessment and treatment options are then discussed, and potentially important pharmacokinetic interactions are reviewed.

CONCLUSIONS

Individuals with HIV show higher rates of depression. This phenomenon may be due to a preexisting psychiatric disorder or to the HIV infection. Untreated depression symptoms may lead to non-compliance with drug regimens or increased high-risk behaviors. Given the adverse sequelae of untreated depressions in HIV illness, identification and management of depression are integral components of comprehensive HIV care.

Efficacy of antidepressant medication among HIV-positive individuals with depression: a systematic review and meta-analysis

Depression is highly prevalent among HIV-positive individuals yet some, but not all, have not found antidepressant medication to be efficacious in this population. We performed a systematic review and meta-analysis of double-blinded, randomized controlled trials to examine efficacy of antidepressant treatment among HIV-positive depressed individuals and evaluate whether the results are generalizable to women and minorities. We used PubMed, the Cochrane Database, a search of bibliographies, and consultation with experts to find double-blinded, controlled clinical trials with random assignment to antidepressants or control condition for which HIV-positive patients met standard diagnostic criteria for depression. The principal measure of effect size was the standard difference between means on the Hamilton Depression Score (HDS). We identified 7 studies that included 494 subjects. Three of the 7 studies reported significant antidepressant effects. The pooled effect size from the random effects model was 0.57 (95% confidence interval [CI]: [0.28-0.85]). Heterogeneity across studies was significant (Q, 13.22; p = 0.07; I(2) = 47.1%). When stratified by placebo response, the pooled effect size for placebo response greater than 33% was 0.20 (-0.11-0.52) and not significant while the pooled effect size for placebo response greater than 33% was 0.80 (0.52-1.08) and was significant. Placebo response explained nearly 62% of the variance in effect sizes across studies. Women were nearly absent from and minorities were underrepresented in the studies investigated. Antidepressant medication is efficacious in treating depression among depressed, HIV-positive individuals. However, the underrepresentation of women and minorities limits the generalizability of these findings and suggests that future studies be directed to address this disparity.

Use of Selective Serotonin-Reuptake Inhibitors in the Treatment of Depression in Adults with HIV

OBJECTIVE:

To review the safety and efficacy of selective serotonin-reuptake inhibitors (SSRIs) for the treatment of depression in adults with HIV.

DATA SOURCES:

We searched Pre-MEDLINE and MEDLINE (1966-May 2004) using terms including generic names of antidepressants and antiretrovirals, depression, HIV, and acquired immunodeficiency syndrome. All English-language articles were included in this review.

DATA SYNTHESIS:

SSRIs may be effective and better tolerated than tricyclic antidepressants in HIV-positive adults. SSRIs did not appear to affect CD4+ cell counts.

CONCLUSIONS:

Controlled trials comparing SSRIs are lacking; thus, it is difficult to determine whether one SSRI is more efficacious than another. It appears that most SSRIs may be used in HIV-positive adults. If drug-drug interactions are a concern, sertraline, citalopram, and possibly escitalopram may be considered.