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Cardiac Steatosis in HIV-A Marker or Mediator of Disease?
Morgan Jacob1,2, Cameron J Holloway1,2,3,4
1St. Vincent's Hospital, Darlinghurst, NSW, Australia.
Insights
People living with HIV (PLHIV) face increased cardiac disease risk due to shared cardio-metabolic issues like cardiac steatosis. Addressing these metabolic and inflammatory factors is key to improving heart health for PLHIV.
Area of Science:
- Cardiology
- Infectious Diseases
- Metabolic Syndrome
Background:
- People living with HIV (PLHIV) are achieving longer life expectancies.
- Cardiovascular disease (CVD) remains a significant comorbidity, impacting long-term health outcomes.
- Cardiac steatosis, or fat accumulation in the heart, is an emerging concern in PLHIV.
Purpose of the Study:
- To explore the mechanisms linking HIV infection to cardiac steatosis.
- To understand the shared cardio-metabolic abnormalities between HIV, obesity, and other inflammatory conditions.
- To highlight the potential for improved cardiac outcomes in PLHIV by managing metabolic and inflammatory factors.
Main Methods:
- Review of existing literature on HIV, cardiovascular disease, and metabolic abnormalities.
- Analysis of shared pathophysiological pathways involving inflammation and altered cardiac metabolism.
- Correlation of increased pericardial and myocardial fat content with chronic systemic inflammation.
Main Results:
- HIV shares cardio-metabolic abnormalities with conditions like obesity, including increased cardiac fat.
- Chronic systemic inflammation and altered cardiac metabolism are associated with increased pericardial and myocardial fat in PLHIV.
- Cardiac steatosis is a potential contributor to increased cardiac morbidity and mortality in the context of HIV.
Conclusions:
- Cardiac steatosis is a significant, yet not fully understood, complication in people living with HIV.
- Managing underlying metabolic and inflammatory conditions is crucial for mitigating cardiac risks in PLHIV.
- Further research into the mechanisms of HIV-associated cardiac steatosis may lead to targeted therapeutic strategies.
Abstract:
Although people living with HIV (PLHIV) are approaching normal life expectancy, a limitation to achieving this goal is managing the higher prevalence of co-morbidities, including cardiovascular disease. Whilst ischaemic heart disease likely contributes to a large proportion of cardiac disease in the modern era of treatment, cardio-metabolic disease, including cardiac steatosis, akin to obesity-related heart disease, is also a possible mechanism of increased cardiac morbidity and mortality. HIV and other metabolic and inflammatory diseases affecting the heart, including obesity, share many cardio-metabolic abnormalities, with increased pericardial and myocardial fat content, in association with chronic systemic inflammatory changes and alterations in cardiac metabolism. Understanding the mechanisms of HIV-associated cardiac steatosis remains an important challenge, as managing the untreated metabolic and inflammatory precipitants may substantially improve cardiac outcomes for PLHIV.
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