Science Closer Than Ever to an HIV Cure
/Scientists have confirmed that a 5th person has recently been cured from HIV. This patient joins an incredibly small group of people who have participated in treatments that have effectively eliminated HIV from their systems. Experts agree there is still a plethora of work and trials that need to take place before effective forms of large scale distribution can be applied to the more than 30 million people currently living with the disease.
The news of another person cured from HIV brings hope to infected patients around the world, and suggests we are one step closer to finding a global cure. HIV has been studied rigorously over the past 50 years, leading to various methods to treat and manage symptoms of the disease, significantly extending patient’s lives and preventing pier-to-pier transmission. Much of the current treatment is focused primarily on reducing active viral loads found in a patient’s blood, and preventing HIV from advancing into its life threatening form as AIDS.
As people afflicted with the disease are able to live longer and prevent further transmission, scientists are able to continue studying the harmful disease, searching for a global solution. More patient trials are scheduled to take place throughout the remainder of this decade as technology and new understanding of how to control the disease continue to advance bringing us one step closer towards a cure.
History of HIV
HIV, otherwise known as the human immunodeficiency virus, attacks a person’s immune system increasing their likelihood of succumbing to other opportunistic infections and serious illness, effectively killing them. The disease is a lifelong affliction and can be easily transmitted through contact with the bodily fluids of another infected person.
After contracting HIV a person may experience flu-like symptoms that gradually progress through the three stages of the disease before becoming life threatening.
Stage 1 Acute HIV Infection:
Patient’s have a large quantity of HIV in their blood and are extremely contagious.
Patient’s exhibit many persistent flu-like symptoms like fever, sore throat, swollen glands, rash, muscle aches, fatigue. Etc.
Stage 2 Chronic HIV Infection:
The asymptomatic HIV infection stage where the disease is still active and producing within the body, but patients will likely not exhibit any symptoms.
Without treatment, the stage may continue for a decade or longer.
Stage 3 Acquired Immunodeficiency Syndrome
The most severe and life threatening stage of HIV infection.
Patient’s have high viral load and can easily transmit the disease.
Patient’s exhibit badly damaged immune systems exposing them to various opportunistic diseases and illnesses.
Without HIV treatment, people with AIDS typically only live up to three years after progressing to this stage.
An HIV diagnosis is not life threatening with adequate treatment, however it is almost always fatal if the disease is left untreated and it advances into its later Stage 3 form as AIDs. There is no cure for HIV or AIDS, however doctors have developed significant advancements in medicine usage to effectively treat the symptoms of HIV, prevent its transmission, and extend the lives of infected people.
There are currently 38.4 million people living with HIV, all who rely on the aid of modern medicines to remain alive. The disease has been dated back to the early 1800s, thought to originate from an interspecies transmission between chimpanzees and humans.The ape virus origins is thought to have entered human populations after hunters came into contact with the infected meat of a population of chimpanzees in Africa. Over the decades following the initial transfer, the disease spread across Africa and into the rest of the world spreading to the United States of America in the mid to late 1970s.
How Stem Cells Cured HIV
The first patient ever cured from HIV was a German patient named Timothy Ray Brown in 2009. Timothy Brown was first infected with HIV in 1995 as a student in Berlin, where he successfully controlled his viral loads using medication. However his health took a significant turn for the worse in 2006 after he was diagnosed with leukemia. He was forced to undergo several operations, including a bone marrow transplant using stem cells.
Due to his positive HIV diagnosis, the doctors operated the allogeneic stem cell transplant using stem cells from a donor with the CCR5 gene mutilation which made them resistant to HIV infections.
Mr. Brown was forced to halt his HIV medications when starting the stem cell treatment, although he continued to get tested for signs of HIV. As doctor’s continued to monitor him, they were unable to find any signs of HIV in his blood or body for the next three years after his transplant. Additional studies were also able to identify decreases in HIV specific blood antibodies indicating the elimination of functional HIV from his system.
After presenting his patient case at the Conference on Retroviruses and Opportunistic Infections additional patients continued to be cured using the same methods.The other cured patients all underwent similar stem cell therapies to combat various forms of blood cancers. This method of treatment is not realistic over large scales because the human stem cell donors that bear the crucial CCR5 HIV resistant genetic mutation only account for approximately 1% of the global population, and stem cell transplantation is an extreme treatment with a myriad of associated risks.
Working Towards an HIV Cure
HIV is an incredibly complex virus that persistently spreads throughout a person’s body once infected. The disease can exhibit periods of latency while continuing to spread through cells in the body, even while under the medication of antiretrovirals (ARV). The main problem for scientists working towards a cure is finding a way to uncover and specifically target these hidden HIV cells that can unfortunately be reanimated if a patient stops using their medications, leading to reinfection.
The first step scientists are exploring on the road to a cure is to influence the hidden HIV cells to produce recognizable HIV proteins that medicine and the body can identify. Once the cells harboring the HIV are identified, specific drugs may be used to tag these cells for the immune system to exterminate. Patients will be given the treatment while continuously using the ARV medication to ensure healthy cells are protected from infection.
The biggest problem scientists are facing developing this induce and reduce method, is reactivating the hidden HIV without causing health complications to the subject. However, with many of the world’s top scientists working diligently towards this solution, there have already been advances in types of effective medication for identification.
The scientists remain optimistic that the world is closer than ever to having a cure for this disease. Moving forward, the studies will progress from laboratories into clinical trials, eventually determining the applications for the rest of the infected population.