Posts tagged HIV
HIV and Bone Loss in Infected Young Men
8 years ago
by ADMIN
in HIV Research
New research shows that bone loss is prevalent in HIV positive young men.
Certain physiological occurrences are expected for patients who are infected with HIV. Bone loss is one of the effects that tops the list. It has been documented that those with the disease are more likely to present with fractures than someone who is not HIV-positive. High rates of osteoporosis and osteopenia are not new. However, recent research shows a discrepancy between the sexes in this matter. Further investigation revealed some information that could prove helpful for physicians as they treat HIV-positive individuals.
The most noticeable difference is the percentage of men versus the percentage of women who present with osteoporosis or osteopenia. Men actually have a much higher rate of the condition than women. It is estimated that 90% of HIV-infected men have bone loss while females with HIV come in around 60%.
HIV causes chronic inflammation due to disruption and dysfunction of the immune system. Antiretroviral therapies also add to the body’s burden of maintaining bone mass. These conditions are known to slowly erode bone. Studies show that in preteen and teenage males, there is an increase of what is called macrophages. These white blood cells, when found in the bone, are responsible for resorption during remodeling of the bone when it is continuous.
Predicting and Preventing Bone Loss
Digging a bit deeper, the more of these specialized cells there were, the less dense the bone material proved to be. If the production of the macrophages increases, it seems to indicate bone loss. It is hoped that with this information, newly infected patients can be watched for these types of changes, and thereby the amount of bone lost can be reduced.
For the feminine side, chronic inflammation generally is more prevalent in females. However, due to the presence of estrogen, the rate of bone loss is lessened. Estrogen acts as a shield against some of the inflammation. Estrogen is also effective at blocking the production of macrophages. These two properties together seem to account for the lower figures of bone loss in females when compared to males.
Link Between HIV and Zinc Deficiency
8 years ago
by ADMIN
in HIV Research
Living with HIV while on antiretroviral therapy usually means that an individual will have or will experience secondary conditions. Quality of life and overall life expectancy have continued to rise, yet there is room for improvement. This is especially the case when certain conditions can signal progression in the disease – such as zinc deficiency and inflammation.
Inflammation and HIV
Inflammation is an immune response that can become overactive with HIV treatment. Efforts to understand what causes this to happen, and how to reduce the inflammation, have been the focal point for a number of research projects around the world. One particular study linked a lack of zinc to higher rates of inflammation.
Zinc Deficiency and Inflammation
The study helped to link a deficiency in the nutrient zinc—a condition that is commonly found in those who are HIV-positive—and inflammation. Through a close examination of hundreds of patients with HIV who are on antiretroviral therapy, they were able to acquire information specific to this topic. Rigorous gathering of statistics, diet information, blood samples, interviews, and other samples was necessary to confirm the findings.
Certain biomarkers used to identify inflammation can be used to analyze the progression of the condition. One of those markers relates to zinc. The higher the concentration of the marker, the less zinc there was. This deficiency could help with gaining better control over the effects of the infection. If confirmed that this is the case, it could lead to relieving some symptoms from sufferers and improve quality of life. Scientists are also hoping that other groups would likewise benefit from these results.
More Questions About Zinc Deficiency Than Answers
While the link between the biomarker and the lack of zinc are clear, a few questions were raised. For one, researchers are not sure if the inflammation is caused or aided by the lack of zinc. It could be that zinc deficiency is the result of the inflammation. Along with these issues, there are some doubts that simply increasing zinc in one’s diet would help rectify the problem. In order to be conclusive, more information is needed.
HIV Health Care Improvement
8 years ago
by ADMIN
in HIV Management
Many agencies, clinics, and other facilities support health care programs to help care for patients who are HIV positive. Certain agencies look after treatment and track progress, while others care for emotional and mental needs of those in this circumstance. Even religious organizations play a role in some of the existing programs that are reaching out to help those with HIV. Two recent studies looked closer at the work being done to support these patients, and they found ways to make these programs even more cost-effective and efficient.
Improving Health Care Programs
Community support for those with HIV is important. Such support can be shown in a variety of ways. On the physical side of things, access to treatment, information for prevention, and testing, are crucial to stemming the outbreak. Many with HIV look to programs that offer both counseling and social support. Research continues to show that when all these areas are being addressed, patients fair better.
So, how can these programs and institutions improve?
- Optimizing effectiveness when agencies remove a sense of competitiveness with others in the area that are also treating or helping those with HIV infections.
- Developing networks would help encourage patients to seek out all avenues of help within an area, instead of focusing on just one.
- Focusing more efforts on HIV prevention is an area of particular interest for experts.
- Giving more attention to education on this matter can have lasting effects on the overall war against the disease.
- Making information more readily available means reaching more people.
To be successful, health care programs need to be accessible to those they are reaching out to serve. Some suggestions on improving in this area include having web-based meetings as an option to those who may not be able to attend in person.
Implementing a few of these simple suggestions could touch more lives, improve quality of life, and help reduce the spread of infection. By cooperating, networking, increasing the availability of pertinent information, and increasing how many can participate in the health care programs – the number of those who could benefit will increase. The effectiveness of such programs and institutions is undeniable. Imagine the effects if these were streamlined and if they put the aforementioned suggestions into practice.
Making HIV Testing Acceptable to Patients
8 years ago
Around the globe, 37 million individuals are HIV-positive. While that figure is staggering enough, it is estimated that nearly half of all infections are left undiagnosed. Advancements in therapies, preventative education, and a better understanding of how the disease works, all aid in slowing the epidemic. However, if the infection is left undiagnosed, it works against progress, and millions could be at risk for exposure or infection.
With this is mind, researchers have been looking into simple ways to encourage patients to be tested for HIV. They are hoping that what they learn will help medical institutions around the world to be able to convince more people to agree to screening.
Asking Patients the Right Way
It is all in the approach. This is what has been most notable throughout these studies. How a question is phrased can make the difference between someone agreeing to HIV testing—or refusing the exam. Basically, here are three ways to approach:
- Notifying the patient that testing for HIV is available, and that he or she could request the test if they wanted (also called the opt-in approach). This approach yielded the poorest result, with just over one-third of those asked accepting an exam.
- Using the “active choice.” In this instance, a patient was asked directly if he or she would like an exam. This second phrasing came up with better results than the first. Over half of the patients who were asked directly, agreed to the testing.
- The “opt-out” approach simply informed patients that they would be tested for HIV unless they declined. Two-thirds of those who were informed this way were tested, making this approach the most successful.
The Right Method Gets Results
During these trials, patients who were in higher risk categories were more likely to agree to testing than those in lower risk groups. This reaffirms that how a patient is asked can make a big difference in the outcome. It is not completely understood why patient behavior varies with how questions are phrased, but a few simple changes in how healthcare workers ask their questions can do a lot of good.
Protein HIV Used to Hijack Human Genes
8 years ago
Four years ago, it was estimated that 1.2 million people living in the United States had HIV. Add to that an average of 50,000 new cases per year, and the results are staggering. As the disease progresses into AIDS, the outlook is bleak. One estimate put the number of patients with the advanced stages of HIV at over 26,000. While it is true that therapy can give a person who is HIV-positive a promising future, these treatments are lifelong, and the effects of the infection still manifest themselves in different ways as a patient ages.
A Protein Called Tat
In order to better understand how this wily virus is able to get such a strong hold on its host, experts meticulously performed experiments and studies. The results have brought to light how HIV uses a tiny protein, called Tat, to shut down certain human genes. HIV (a retrovirus) does not have many of its own genes, which is why it searches out and eventually takes over a host cell’s genes. Here is where the small protein, Tat, comes in. Once the command center of the cell has been overtaken, Tat manipulates the genes in order to create a more appealing environment for the virus. Studies show that nearly 400 human genes bind with Tat—and then shut down. When the scientists compared the symptoms of an HIV infection to the genes that were shut down, the two were compatible.
What this tiny protein is able to accomplish is astounding. It does provide useful knowledge that could be applied to halt infection and keep the disease from progressing to AIDS. One European country has already begun working on a vaccine which inhibits Tat in order to try and stop HIV. The results have been promising. However, it will take some more time for anything concrete to be established. In the meantime, more information is being gathered and used to come up with even more effective ways to treat, prevent, and hopefully completely eradicate HIV in the future.
