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Phl now has 32 new HIV cases per day, up from 22 HIV cases per day in 2015

From January 1984 to October 2018, the Philippines already had a total of 60,207 HIV cases. It is worth noting that 9,605 of that figure was reported from January to October 2018 alone.

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October highlighted the continuing disturbing worsening HIV situation in the Philippines, with an estimated 32 new HIV cases now happening in the country every day. For October, there were 1,072 new HIV cases reported to the HIV/AIDS & ART Registry of the Philippines (HARP).

It was in September when this number (i.e. 32 new HIV cases per day) was first reported. Prior to that, the country “only” had 31 new HIV cases reported daily, though even this figure was already considered high compared to figures from past years. In 2009, the country only had two new HIV cases per day. By 2015, the number increased to 22; and in the early part of 2018, the number was 31.

From January 1984 (when the first HIV case was reported in the country) to October 2018 (when the latest figures were belatedly – as usual – released by the HARP), the Philippines already had a total of 60,207 HIV cases. It is worth noting that 9,605 of that figure was reported from January to October 2018 alone.

MALES IN FOCUS

Those newly infected continue to be male – in October, of the 1,072 newly infected, 1,016 (95%) were male. The median age was 28 years old (age range: 2 – 67 years old). Half of the cases (50%, 537) were 25-34 years old and 29% (306) were 15-24 years old at the time of testing.

GEOGRAPHICAL DISTRIBUTION

Based on where those who tested HIV-positive originated, one third (32%, 343) were from the National Capital Region (NCR). Region 4A (17%, 187 cases), Region 3 (11%, 121), Region 7 (8%, 82), and Region 6 (7%, 76), round off the top five regions with the most number of newly diagnosed cases for the month, together accounting for 75% of the total.

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Sexual contact remains the main mode of transmission (97%, 1,044). Among this, 86% were males who have sex with males (MSM). Other modes of transmission were needle sharing among injecting drug users (1%, 15) and vertical (formerly, mother-to-child) transmission (<1%, 2). There were 11 cases that had no data on mode of transmission.

Among the newly diagnosed females in October, eight were pregnant at the time of diagnosis. Five cases were from NCR and one case each from Regions 3, 4A and 7.

ACCESSING TREATMENT

In October, there were 831 patients who were initiated on antiretroviral therapy (ART). This is close to the figure registered in September, when 804 patients were initiated on ART. To date, a total of 32,324 people living with HIV (PLHIV) are on ART as of October; and this figure is still only a few thousand over the total number (60,207) of those who reported to have HIV in the country.

FOCUS ON THE YOUNG

Those getting infected continue to be also younger.

In October, 306 (29%) cases were among youth 15-24 years old; 94% were male. Almost all (98%, 300) were infected through sexual contact (31 male-female sex, 197 male-male sex, 72 sex with both males and females). There were six cases that had no data on mode of transmission.

There were also 41 newly diagnosed adolescents 10-19 years old in October. Almost all (95%) were infected through sexual contact (3 male-female sex, 31 male-male sex, and 5 had sex with both males and females); two had no data on mode of transmission. There were two newly diagnosed child less than 10 years old, and both were infected through mother-to-child transmission.

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OFWs IN FOCUS

Even among overseas Filipino workers who tested HIV-positive, more were infected from male-to-male sexual contact.

Eighty-one people who worked overseas within the past five years of diagnosis, whether on land or at sea, were diagnosed HIV-positive in October. They comprise 8% of the total newly diagnosed cases for the month. Among them, 89% (72) were male. Almost all were infected through sexual contact (27 male-female sex, 32 male-male sex, and 21 sex with both males and females). The ages of male OFWs ranged from 23 to 55 years (median: 32 years). More than half (57%) of the cases belonged to the 25-34 year age group. Among the female OFWs diagnosed in October 2018, four cases were from the age groups 25-34 and 35-49; and one case was from 50 years old & older age group. The age range among diagnosed female OFWs were 28 to 61 years (median: 35 years).

ENGAGEMENT IN TRANSACTIONAL SEX

In October 2018, 14% (147) of the newly diagnosed engaged in transactional sex. Ninety-five percent (140) were male and aged from 20 to 64 years old (median: 30 years). More than half of the males (57%, 80) reported paying for sex only, 31% (43) reported accepting payment for sex only and 12% (17) engaged in both. Among the female cases who engaged in transactional sex, majority (71%, 5) were reported accepting payment in exchange for sex and 29% (2) reported paying for sex only.

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Reporting on people who engage in transactional sex – or those who reported that they either pay for sex, regularly accept payment for sex, or do both – was only included in the HARP starting December 2012.

PREGNANT AND HIV-POZ

In October 2018, eight newly diagnosed cases were reported to be pregnant. Five were from NCR and one each from Regions 3, 4A and 7. The age of diagnosis ranged from 19 to 34 (median age: 23).

Reporting of pregnancy status at the time of testing was included in the HARP from the year 2011.

DEATHS AMONG PEOPLE WITH HIV

In October 2018, there were 30 reported deaths due to any cause among people with HIV. Ninety-seven percent (29) were males. One case (4%) was less than 15, four cases (13%) were 15-24, 12 cases (40%) were from 25-34, 10 cases (33%) were from 35-49, and three cases (10%) were 50 years and older age group. Almost all of the cases were reported to have acquired the infection through sexual contact (97%) (3 through male-female sex, 19 through male-male sex, and seven through sex with both males and females); while one case (3%) was infected through vertical transmission.

The 30 deaths are lower than the number reported in August, with reached 159 HIV-related deaths. But the figures are still believed to be be higher because of under- or non-reporting.

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HIV spreads through direct cell-to-cell contact

Despite over 30 years of research, many key aspects of how HIV, the causative agent of the acquired immune deficiency syndrome (AIDS) spreads are still not understood. One of these unresolved questions concerns the interactions between the virus with the environment in the human body.

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Microscopic recording and computer model of the interaction between infected cells (green) and non-infected cells (red) in collagen structures (grey). Credit: Oliver Fackler/Frederik Graw

The spread of pathogens like the human immunodeficiency virus (HIV) is often studied in a test tube, i.e. in two-dimensional cell cultures, even though it hardly reflects the much more complex conditions in the human body. Using cell culture systems, quantitative image analysis, and computer simulations, an interdisciplinary team of scientists from Heidelberg University has now explored how HIV spreads in three-dimensional tissue-like environments. The researchers’ results show that the tissue structure forces the virus to spread through direct cell-to-cell contact.

Despite over 30 years of research, many key aspects of how HIV, the causative agent of the acquired immune deficiency syndrome (AIDS) spreads are still not understood. One of these unresolved questions concerns the interactions between the virus with the environment in the human body.

Traditionally it has been assumed that infected cells release viral particles which then diffuse and eventually infect other cells. But it is also possible that viral particles are directly transferred from one infected cell to the next through close contact. Until now it was unknown which of these modes of transmission prevailed in tissue.

“Studies on HIV replication in the lab are mostly conducted in simple cell culture experiments in plastic dishes that do not reflect the complex architecture and heterogeneity of tissue”, explains study director Prof./Dr. Oliver Fackler of the Center for Integrative Infectious Disease Research (CIID) at Heidelberg University Hospital.

In their approach, the Heidelberg researchers took into account that the so-called CD4 T helper cells, the preferred cell type infected by HIV, are highly motile in their physiological environment. They used a novel cell culture system, in which a three-dimensional scaffold was generated with the help of collagen. This allowed for maintaining the cells’ mobility and monitoring primary CD4 T cells infected with HIV-1 in a tissue-like environment over the course of several weeks. Using this approach, the researchers measured a number of factors that characterize cell motility, virus replication, and the gradual loss of CD4 T helper cells.

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“This yielded a very complex set of data that was impossible to interpret without the help from scientists of other disciplines,” explains Dr. Andrea Imle, who worked on the project during her PhD at the CIID.

In analyzing the data, the scientists who conducted the experiments collaborated with colleagues from the fields of image processing, theoretical biophysics and mathematical modeling. Together they were able to characterize the complex behavior of cells and viruses and simulate it on the computer. This made it possible to make important predictions on the key processes that determine HIV-1 spread in these 3D cultures, which were confirmed by subsequent experimentation. “Our interdisciplinary study is a good example of how iterative cycles of experimentation and simulation can help to quantitatively analyze a complex biological process,” states Prof./Dr. Ulrich Schwarz of the Institute for Theoretical Physics at Heidelberg University.

The data analysis revealed that the 3D environment of the cell culture system suppresses infection with a cell-free virus while simultaneously promoting direct virus transmission from cell to cell. “Our models allowed us to integrate short single-cell microscopy films with long-term cell population measurements and thereby to estimate the minimal time span required for cell-to-cell contacts to transmit infection,” explains Dr. Frederik Graw of the BioQuant Centre of Heidelberg University. The researchers hope that these findings will eventually lead to new therapeutic approaches in the treatment of HIV.

The research was conducted within the Collaborative Research Centre, “Integrative Analysis of Pathogen Replication and Spread”, (CRC 1129) funded by the German Research Foundation and supported by the Center for Modelling and Simulation in the Biosciences (BIOMS) of Heidelberg University. The results were published in Nature Communications.

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Holes in the immune system left unrepaired despite HIV drug therapy

A study showed that ART leaves unrepaired holes in the immune system’s wall of defence. This suggests that some of these long-lasting defects may contribute to the lack of viral control once the antiretroviral therapy is interrupted.

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Photo by Drew Hays from Unsplash.com

If they don’t receive antiretroviral therapy (ART), most HIV patients see a progressive weakening of their immune system. But a very small percentage of patients–0.3%–spontaneously control the virus themselves, without ART. Could an explanation lay partly in the sets of genes expressed by scarce white blood cells that recognize HIV? Yes, according to a study published in Nature Immunology and conducted by researchers at the University of Montreal Hospital Research Centre (CRCHUM).

Critical for the coordination of immune responses, CD4 T cells are important white blood cells (lymphocytes) that help control chronic infections like HIV. But on average only about one cell in 1,000 in the CD4 T cell population can recognize the virus.

“With my research team and my collaborators, we comprehensively determined the entire set of genes expressed by these rare cells from the blood of people chronically infected with HIV in whom the virus was abundant prior to ART,” said Daniel Kaufmann, a CRCHUM researcher and an infectious disease specialist. “We then compared it to the cells of HIV controllers, infected people who control the virus in the absence of therapy. This type of powerful approach, also called genome-wide transcriptional profiling, measures the activity of thousands of genes at once, thus creating a global picture of cellular function.”

Using sophisticated cell analysis techniques, lead author Antigoni Morou, a postdoctoral fellow in Kaufmann’s lab, identified major functional differences between the two groups of patients in the study. The HIV controllers had much more robust immune responses, known as Th17 and Th22, which are important for the defense of the gastrointestinal tract, for example. But chronically infected patients with high levels of viral replication showed dysregulated CD4 T cells targeting HIV, and some of their cell subsets showed signs of abnormal functioning.

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Continuing their investigation, the CRCHUM scientists wondered whether ART leads to an immune response akin to the one found in HIV controllers. “We followed up chronically infected patients after control of the virus by ART and checked if the treatment can ‘repair their immune system’ and allow them to have CD4 T cells with features similar to those of the HIV controllers,” said Kaufmann, a professor at Université de Montréal.

The result was double-edged: some gene modules were sensitive to ART, while others turned out to be expressed very differently than in HIV controllers.

“We showed that ART leaves unrepaired holes in the immune system’s wall of defence,” said Kaufmann. “Our results suggest that some of these long-lasting defects may contribute to the lack of viral control once the antiretroviral therapy is interrupted. We now know which holes linger in the immune system. Do we have to fill them in, and if so, how? This is another science question.”

Paving the way to new therapies that could complement ART, Kaufmann’s team identified important features of an effective HIV specific immune response compared to a dysfunctional one and showed how the response can be affected by ART.

The next step will be to study the underlying programming of these CD4 T cells (epigenetics) in the hope of developing new targeted strategies to reverse immune dysfunction and complement ART. Kaufmann’s lab is now using the same approach to evaluate candidates for an HIV vaccine.

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In 2017, nearly 37 million people were living with HIV. Every day, 5,000 new infections are reported to health authorities around the world.

“Altered differentiation is central to HIV-specific CD4+ T cell dysfunction in progressive disease” by Antigoni Morou et al. was published July 15, 2019 in Nature Immunology. The research was funded by the US National Institutes of Health; the Canadian Institutes of Health Research; the AIDS and Infectious Diseases Network of the Fonds de Recherche du Québec-Santé; and a Canada Foundation for Innovation Program Leader grant.

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For children born with HIV, adhering to medication gets harder with age

Researchers found that from preadolescence to young adulthood, the prevalence of non-adherence increased from 31% to 50%. In addition, the prevalence of detectable viral load among the same age groups increased from 16% to 40%.

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Paolo (not his real name), now nine years old, doesn’t know he has HIV.

Ang alam niya lang, kailangan niya uminom ng gamot gabi-gabi (He just knows he has to drink his meds every night),” his aunt, Virginia, said. “‘Di niya alam para saan ‘yun; basta gamot lang na kailangan niya (He doesn’t even know what they’re for; just that they’re meds that he needs).”

Paolo calls Virginia “mama”, but his biological mother – Virginia’s younger sister Vicky* – already passed away over eight years ago. And when his biological mother died, Vicky’s child Paolo was given to Virginia, the ate (elder sister).

And now that Paolo is growing up, this – the taking of medicines – continues to be an issue that Virginia said is one of those that “we continue to face.”

Apparently, though, this issue is not exactly surprising.

A new study in the US found that children born with HIV were “less likely to adhere to their medications as they aged from preadolescence to adolescence and into young adulthood.” The study – led by researchers at Harvard T.H. Chan School of Public Health – found that additionally, the prevalence of detectable viral load – an indication that the virus is not being managed by medications and a factor that’s often associated with non-adherence – also increased with age.

The study is one of the first to examine why different age groups stop adhering to treatment (non-adherence). While the factors related to non-adherence varied by age group, youth who were concerned about side effects of the drugs were less likely to be adherent at most ages.

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“As they approach adulthood, many youth face challenges, such as entering new relationships, managing disclosure of their HIV status, and changing to an adult HIV care provider. Ensuring successful HIV medication adherence before and throughout adolescence is critical,” said lead author Deborah Kacanek, research scientist in Harvard Chan School’s Department of Biostatistics. “We found that the factors that either supported adherence and a suppressed (undetectable) viral load, or made it harder for youth to adhere to treatment, varied depending on their age.”

The study was published in AIDS.

This study is worth highlighting in the Philippines because HIV continues to also affect younger Filipinos.

In April 2019, there were 38 newly diagnosed adolescents 10-19 years old at the time of diagnosis. Further, two cases were 17 years old and 36 cases were 18-19 years old. Almost all (95%) were infected through sexual contact (six male-female sex, 19 male-male sex, and 11 had sex with both males and females), one was infected through sharing of needles and one had no data on mode of transmission. In addition, there were three diagnosed cases less than 10 years old and all were infected through vertical (formerly mother-to-child) transmission.

Globally, 1.8 million adolescents live with HIV; and adhering to regimens of antiretroviral therapy (ART) is key to managing the disease and reducing the risk of transmission. And yet “sticking to a daily regimen of medicine, however, is especially challenging for adolescents and young adults, who are navigating a range of physical, cognitive, social and emotional changes.

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“Adherence can be more complicated for youth growing up with perinatal HIV, whose lifelong experiences with HIV, stigma, and multiple antiretroviral medications may pose challenges to achieving viral suppression that are different from youth who acquire HIV later in life.”

To better understand these challenges and why young people may not adhere to their medications, the researchers followed 381 youth with perinatally acquired HIV for an average of 3.3 years. The youth were participants in the Pediatric HIV/AIDS Cohort Study, which follows children and youth born with HIV or born exposed at birth to HIV to determine the impact of lifelong HIV and the long-term safety of antiretroviral regimens.

The preadolescents, adolescents and young adults in the study ranged from age 8 to 22 and were recruited from 15 different clinical sites in the US, including Puerto Rico. As part of the study, the researchers examined results from blood tests that measured viral loads, and they examined nearly 1,200 adherence evaluations in which study participants or their caregivers self-reported any missed doses of medication in the prior seven days.

The researchers found that from preadolescence to young adulthood, the prevalence of non-adherence increased from 31% to 50%. In addition, the prevalence of detectable viral load among the same age groups increased from 16% to 40%.

For each age group, different factors were associated with nonadherence. For example, during middle adolescence (15-17 years old), alcohol use, having an unmarried caregiver, indirect exposure to violence, stigma, and stressful life events were all associated with nonadherence.

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“It is important to talk with youth about how to take medications properly, but our study highlights the need for those who care for these youths to focus also on age-related factors that may influence adherence,” Kacanek said. “Services to help support adherence need to address both the age-related risks and build on the sources of strength and resilience among youth at different stages of development.”

Other Harvard Chan School researchers who contributed to the study include Claire Berman, Yanling Huo, and Katherine Tassiopoulos.

Back in the Philippines, Virginia said that “mabuti ngang may gamot na (si Paolo)… pero marami pa ring isyu na di nasasagot, di nagagawan ng paraan (it’s good Paolo’s already taking antiretroviral medicine… but there are still numerous unanswered/unresolved issues).”

And with dealing with children living with HIV, this still continues to be the case…

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Antiretroviral agent such as rilpivirine could improve pre-exposure prophylaxis

In an ex vivo model of HIV PrEP using tissue samples in the laboratory, the drug was associated with significant inhibition of HIV replication in rectal tissue, which persisted for up to four months after the last dose of rilpivirine. The drug was not, however, associated with viral suppression in cervicovaginal tissue.

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A long-acting antiretroviral agent such as rilpivirine could further improve pre-exposure prophylaxis (PrEP), already shown to be safe and effective at preventing AIDS in high risk populations, as it could overcome problems with poor medication adherence.

This is according to a new study examining the safety, acceptability, and effectiveness of multiple doses of injected rilpivirine, published in AIDS Research and Human Retroviruses, a peer-reviewed journal from Mary Ann Liebert, Inc., publishers.

The article entitled “A Multiple Dose Phase 1 Assessment of Rilpivirine Long Acting in a Model of Preexposure Prophylaxis Against HIV” was coauthored by Ian McGowan, Orion Biotechnology (Ottawa, Canada) and an international team of researchers from University of Pittsburgh (PA), Magee Women Research Institute (Pittsburgh, PA), Alpha StatConsult (Damascus, MD), University of Liverpool (U.K.), University of Pittsburgh Graduate School of Public Health, Janssen Research and Development (Beerse, Belgium), The Translational Science Corp. (Los Angeles, CA), and University of Miami, Miller School of Medicine (Miami, FL).

In this phase 1 study, women and men received three intramuscular doses of rilpivirine eight weeks apart. The injections were shown to be safe and well tolerated, with injection site pain being the most common adverse effect. In an ex vivo model of HIV PrEP using tissue samples in the laboratory, the drug was associated with significant inhibition of HIV replication in rectal tissue, which persisted for up to four months after the last dose of rilpivirine. The drug was not, however, associated with viral suppression in cervicovaginal tissue.

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Thomas Hope, PhD, Editor-in-Chief of AIDS Research and Human Retroviruses and Professor of Cell and Molecular Biology at Northwestern University, Feinberg School of Medicine, Chicago, IL states: “There is currently a significant effort to develop long-acting formulations of drugs that prevent HIV replication and can be utilized to prevent HIV acquisition (PrEP). PrEP works if properly taken. Long-acting formulations can eliminate problems when high risk individuals forget to take their pills every day. The development of successful long-acting PrEP formulations will decrease new HIV infections by providing improved protection from HIV acquisition by eliminating problems for individuals who don’t like pills or can’t remember to take their pill every day.”

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PLHIV who have compassionate care providers start, remain in treatment longer

Rutgers researchers find patients who perceive their primary care providers as lacking empathy and not willing to include them in decision making are at risk for abandoning treatment or not seeking treatment at all.

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Photo used for illustration purpose only. Photo by Vittore Buzzi from Unsplash.com.

Adults with HIV are more likely to continue life-saving treatments if their primary health care providers show respect, unconditional empathy without judgement and demonstrate an ability to partner with patients in decision making to address their goals, a Rutgers study finds.

The systematic review appears in the Joanna Briggs Institute Database of Systematic Reviews and Implementation Reports.

The findings showed that the complexity of the illness, treatment regimen and overall healthcare system frequently overwhelms the patient and fear of stigma often prevents them from beginning or continuing treatment. The researchers found that patients need help in understanding their illness and care needs using understandable language to translate complex information, letting patients know what to expect and reinforcing that HIV is now a treatable, yet complex, chronic illness.

“Today, HIV is considered a chronic, treatable condition. However, this study found that many patients continue to view it as a death sentence,” said lead author Andrea Norberg, executive director of the François-Xavier Bagnoud Center at Rutgers School of Nursing, which provides care for people with HIV, infectious diseases and immunologic disorders. “We know that people who are knowledgeable about HIV, who are engaged in care and taking antiretroviral therapy medications remain relatively healthy. Our challenge is to reach those people diagnosed with HIV and who are not retained or engaged in ongoing care. In the United States, this is approximately 49 percent of the 1.1 million people diagnosed.”

The researchers included 41 studies published between 1997 to 2017. The sample populations included adults with HIV and their healthcare providers. All adults with HIV were between the ages of 18 and 65, represented diverse races and ethnicities, sexual orientations and gender identities. Healthcare providers included physicians, nurse practitioners, physician assistants, pharmacists, social workers and others. The included studies had 1,597 participants.

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They found that many patients experience stigma and a lack of compassion that is often grounded in primary care providers’ ignorance about HIV and transmission risks. The resulting poor communication between providers and patients results in many patients’ failure to seek or remain in care and adhere to antiretroviral therapy medications.

Patients reported feeling “grilled” by providers who often assumed they were not taking medications. Norberg suggested providers would be more successful in getting information from patients by allowing them to be honest, inquiring about their health goals and telling them how other patients have managed treatment.

Conversely, the researchers found that patients were more inclined to adhere to HIV treatment when their primary care providers showed empathy, true listening, trust, consideration of the whole person and involvement in decision making. However, many patients reported that healthcare providers viewed care only as “prescribing antiretroviral therapy medicine.”

“Providers should use common language, not medical jargon, to educate patients about HIV, medications and how they can live a healthy life,” Norberg said. “They should thoroughly teach them about the disease, the medications and side effects, and the meaning of the tests.”

The researchers noted that providers who help patients navigate the health system, offer one-stop location of services and provide connections to psychological support, health insurance, medicine, transportation and other services, can help their patients stay engaged in care.

Primary healthcare providers can enroll in professional education to improve their knowledge about HIV, use of motivational interviewing skills and seek opportunities for experiential learning, observation and hands-on practice working directly with patients with HIV, Norberg said.

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Other Rutgers authors included John Nelson, Cheryl Holly, Sarah T. Jewell and Susan Salmond.

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Persistent HIV DNA in spinal fluid may be associated with cognitive challenges

Individuals who harbored HIV DNA in the cerebrospinal fluid were more likely than other study participants to experience cognitive deficits on neurocognitive testing.

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Photo by Emiliano Vittoriosi from Unsplash.com

A study found that HIV DNA remained in the cerebrospinal fluid of half of participants with well-managed HIV (virologic suppression in the plasma), confirming that the central nervous system (CNS) is a major reservoir for latent HIV. Individuals who harbored HIV DNA in the cerebrospinal fluid were more likely than other study participants to experience cognitive deficits on neurocognitive testing.

This was disclosed by investigators from the AIDS Clinical Trials Group (ACTG), the world’s largest and longest-established HIV research network, as announced in the Journal of Clinical Investigation from the ACTG HIV Reservoirs Cohort Study (A5321).

“The persistence of HIV in sanctuary sites in the human body, even in the presence of long-term therapy, is a challenge to HIV remission and cure that the ACTG is actively working to address,” said ACTG Chair Judith Currier, M.D., MSc, University of California Los Angeles. “Because neurocognitive function can be compromised even in individuals whose HIV is well treated, it is very important that we understand HIV persistence in the CNS so that we can develop strategies to treat it. This study provides preliminary insights into these challenges.”

This substudy in the ACTG HIV Reservoirs Cohort Study (A5321) was led by Serena Spudich, M.D., Yale University, the late Kevin Robertson, Ph.D., University of North Carolina at Chapel Hill, and John Mellors, M.D., University of Pittsburgh.

The study included 69 participants with well-treated HIV who had their cerebrospinal fluid and blood collected and underwent neurocognitive assessments, which included tests of memory, learning, motor function, and more.

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Participants were mostly male (97 percent) and had been on HIV treatment for a median of almost nine years, with a good response to medications (HIV viral loads in the plasma were all <100 copies/mL and median CD4 counts were in the normal range).

Using highly sensitive methods to detect HIV, researchers found that almost half of these participants harbored viral DNA in cells found in the cerebrospinal fluid. Of those, 30 percent met the criteria for cognitive impairment.

While the study established an association between HIV DNA in cerebrospinal fluid with poorer performance on cognitive tests, researchers stressed that it did not establish a causal relationship, noting that there could be several explanations for the findings. Further studies will help determine strategies to reverse this persistence and improve neurological functioning in individuals with long-standing HIV.

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