HIV Drugs May Help Protect Young Patients' Hearts

Long-term use of powerful drug cocktails known as highly active antiretroviral therapy (HAART) may help protect the hearts of children and teens infected with HIV.

HAART is a form of antiretroviral therapy that is widely used to treat people with HIV, the virus that causes AIDS. Prior to the introduction of antiretroviral therapies, youngsters infected with HIV were at increased risk for heart failure. 

Since the advent of powerful HIV-suppressing medications, "the effects of HIV and on the cardiovascular system of HIV-infected children are not completely understood. 

The new study sought to clear that up. It included nearly 600 HIV-infected and uninfected patients from 14 pediatric HIV clinics across the United States.
According to the team, heart function was better among HIV-infected children receiving HAART than those who were infected with HIV and did not receive HAART, and children who were exposed to HIV but not infected.
"Our results indicate that the current use of combination [antiretroviral therapy], usually HAART, appears to be cardioprotective in HIV-infected children and adolescents," the study authors reported. "This finding is even more relevant in the developing world where the prevalence of HIV disease in children is much higher."
The researchers added that further study comparing different drug regimens might be beneficial "in optimizing HIV outcomes and protecting long-term cardiac health" of children with HIV.

New Tool for Identifying Powerful HIV Antibodies

A team of NIH scientists has developed a new tool to identify broadly neutralizing antibodies (bNAbs) capable of preventing infection by the majority of HIV strains found around the globe, an advance that could help speed HIV vaccine research. Scientists have long studied HIV-infected individuals whose blood shows powerful neutralization activity because understanding how HIV bNAbs develop and attack the virus can yield clues for HIV vaccine design.

But until now, available methods for analyzing blood samples did not easily yield specific information about the HIV bNAbs present or the parts of the virus they targeted. In addition, determining where and how HIV bNAbs bind to the virus has been a laborious process involving several complicated techniques and relatively large quantities of blood from individual donors.

The new tool lets scientists determine precisely the HIV bNAbs present in a particular blood sample by analyzing the neutralized HIV strains there.
Calledneutralization fingerprinting, the tool is a mathematical algorithm (a problem-solving procedure) that exploits the large body of data on HIV bNAbs generated in recent years. The neutralization fingerprint of an HIV antibody is a measurement of which virus strains it can block and with what intensity.
Antibodies that target the same portion of the virus tend to have similar fingerprints.

Blood samples contain mixtures of antibodies, so the new algorithm calculates the specific types of HIV bNAbs present and the proportion of each by comparing the blood's neutralization data with the fingerprints of known HIV bNAbs. This approach is particularly useful when other methods of determining bNAbs targets in a blood sample are not feasible, such as when just a small amount of blood is available. Neutralization fingerprinting also is significantly faster than older analytic methods.

According to the researchers who developed the assay, the underlying approach could be applied to the study of human responses to other pathogens, such as influenza and hepatitis C viruses, for which scientists have much information about neutralizing antibodies.

Human Breast Milk Can Help Reverse Antibiotic Resistance.

A protein complex found in human breast milk can help reverse the antibiotic resistance of bacterial species that cause dangerous pneumonia and staph infections, according to new University at Buffalo research.

In petri dish and animal experiments, the protein complex -- called Human Alpha-lactalbumin Made Lethal to Tumor Cells (HAMLET) -- increased bacteria's sensitivity to multiple classes of antibiotics, such as penicillin and erythromycin.

The effect was so pronounced that bacteria including penicillin-resistantStreptococcus pneumoniae and methicillin-resistant Staphylococcus aureus (MRSA) regained sensitivity to the antibiotics they were previously able to beat.

Long-term use of highly active antiretroviral therapies (HAART) does not appear to be associated with impaired heart function in children and adolescents in a study that sought to determine the cardiac effects of prolonged exposure to HAART on children infected with the human immunodeficiency virus (HIV), according to a report published Online First by JAMA Pediatrics, a JAMA Network publication.

Prior to contemporary antiretroviral therapies (ARTs), children infected with HIV were more likely to have heart failure.

Steven E. Lipshultz, M.D., of the University of Miami Leonard M. Miller School of Medicine, Florida, and colleagues used statistical models to compare echocardiographic measures in the National Institutes of Health-funded Pediatric HIV/AIDS Cohort Study's Adolescent Master Protocol (AMP).

The study included 14 pediatric HIV clinics in the United States. The participants were 325 perinatally HIV-infected children receiving HAART; 189 HIV-exposed but uninfected children; and 70 HIV-infected (mostly HAART-unexposed) historical pediatric controls patients from the National Institutes of Health-funded Pulmonary and Cardiovascular Complications of Vertically Transmitted HIV Infection (P2C2-HIV) Study.

"Our results indicate that the current use of combination ART, usually HAART, appears to be cardioprotective in HIV-infected children and adolescents. This finding is even more relevant in the developing world where the prevalence of HIV disease in children is much higher," the study notes.

Scores for left ventricular (LV) fractional shortening (a measure of cardiac function) were significantly lower among HIV-infected children from the P2C2-HIV Study than among the AMP HIV-infected group or the 189 AMP HIV-exposed but uninfected controls, the study results indicate. The results also show that for HIV-infected children, a lower nadir CD4 percentage and a higher current viral load were associated with significantly lower cardiac function.

Cocaine hampers HIV

      Just two studies presented at the conference were devoted to studying the effect of cocaine on HIV-positive patients. Rapporteur on both acted immunologist Joumana Zeidan of the Florida Institute for the development of vaccines and gene therapy. The objects of  first  studies were 18 HIV-infected patients with the same level of T-lymphocytes, each of whom regularly used cocaine. It was found that cocaine dramatically reduces the function of the thymus gland (thymus), which mature T cells, which play a key role in the immune response to the virus.

    The second study was conducted gene analysis showed that cocaine gives the signal connection between the incidence of virus cells and the thymus, resulting in the overproduction of regulatory T cells that suppress the immune response, at the expense of T-helper cells.

The immune system of elite controllers blocking a key protein in the virus

        About one percent of people infected with human immunodeficiency virus, the so-called elite controllers, even in the absence of treatment is not going to symptoms of AIDS.  

    Virologist and immunologist (Philip Mwimanzi) from Simon Fraser University (Vancouver, Canada) and his colleagues compared the virus isolated in 45 elite controllers and 48 patients in whom the disease progresses in a standard way. It was found that the protein Nef (Negative Regulatory Factor), which plays an important role in the development of HIV, the virus isolated from elite controllers, practically not functioning. Compared to a "normal" such Nef can not enter cells and replicate. In addition, the "elite" Nef can inhibit the expression of proteins on the surface of antigen-presenting cells. All this allows the immune system to control the virus, according to the study authors.

STANOZOLOL (Winstrol)

   

Stanozolol is a man-made steroid, similar to the a naturally occurring steroid testosterone. Stanozolol is used in - hereditary angioedema, which causes episodes of swelling of the face, extremities, genitals, bowel wall, and throat. Stanozolol may decrease the frequency and severity of these attacks.

There were no interactions found in our database between Nolvadex and stanozolol

However, this does not necessarily mean no interactions exist. ALWAYS consult with your doctor or pharmacist.

Nolvadex is in the following drug classes: hormones/antineoplastics, selective estrogen receptor modulators.
Nolvadex is used to treat the following conditions: Breast Cancer, Breast Cancer, Adjuvant, Breast Cancer, Male, Breast Cancer, Metastatic, Breast Cancer, Palliative, McCune-Albright Syndrome, Precocious Puberty.
Stanozolol is a member of the drug class androgens and anabolic steroids. Stanozolol is used to treat Angioedema.

Medications for heartburn cause HIV-infected bone fragility

      Normalize stomach acid drugs - proton pump inhibitors (PPIs) such as Prilosec (PRILOSEC, the active ingredient omeprazole) and Nexium (Nexium, the active ingredient esomeprazole), increase the risk of bone fractures in HIV-infected patients. This conclusion was made by researchers from Yale University based on the examination of more than forty thousand HIV-infected men of middle age.

     As reported by the speaker, (Julie Womack), those who regularly took PPIs, on average twice as often broken limbs, than those who did not take the drugs. The study authors suggest that the mechanism of action of PPIs with locking parientalnyh cells of the gastric mucosa, prevents bone regeneration processes and thus causes brittle bones.

Therapeutic HIV Vaccine 'Proof of Concept'

   A small clinical trial of a therapeutic HIV vaccine temporarily lowered viral levels in HIV-positive participants. While the study is highly preliminary, it gave the Spanish researchers,  a “proof of concept,” suggesting that their strategy may one day lead to a “functional cure,” in which people with HIV could suppress the virus without the need for daily antiretrovirals (ARVs). 

   The researchers created vaccine effect by modifying the patients’ own dendritic cells. These are immune cells that prompt CD4s to fight pathogens—but they can also carry HIV and transmit the virus to CD4 cells. The scientists pulsed the participants’ dendritic cells with HIV that had been drawn from their bloodstream and deactivated with heat.  Out of 36 participants, all of whom were taking long-term ARV therapy, 24 were randomly assigned to receive three injections of the manipulated cells and 12 received three doses of ordinary dendritic cells. Afterward, all participants stopped taking ARVs for 48 weeks. 

     After 12 weeks of ARV cessation, 12 out of the 22 participants who remained in the treatment cohort had a 10-fold reduction or greater in what’s known as a plasma viral load set point, while only one out of 11 in the control group experienced such a benefit. Following an additional 12 weeks, seven out of 20 participants still within the active therapy group maintained a 10-fold reduction in their viral load set point, while none in the control group experienced any sustained therapeutic effect. The viral load reduction was consistently associated with a rise in CD4 counts.

     The vaccine proved safe and well tolerated. Eventually, however, all the participants saw their viral loads rise again.

Clues to the Mystery Cases

     Doctors caring for patients with these rare infections and researchers studying the mysterious cases were keenly aware of the obvious gay connection between the first clusters of cases. It was not long before scientists found an important clue as to why these patients were suffering from atypical, aggressive infections that led to their total physical deterioration: The patients’ blood tests showed an exceptionally low number of T lymphocytes, or T cells, which are a type of white blood cell.

     This suggested that their immune system—the body’s natural defense against invading microorganisms and abnormal cells, such as cancerous cells—had been profoundly weakened. The laboratory finding of extremely low numbers of T cells was consistent with the clinical finding of persistently swollen lymph nodes under the jaw, in the armpits, or in the groin of these patients; such lymphadenopathy also suggested a besieged immune system. It was all beginning to make sense. It appeared that the body’s immunity against the routine onslaught of microorganisms had become compromised, leading to a state