Human Immunodeficiency Virus ( Hiv )

CD4 is a glycoprotein found on the surface of immune cells such as T helper cells, monocytes, macrophages, and dendritic cells. HIV infects cells of the immune system called T lymphocytes (T cells) and macrophages. HIV has an envelope and contains two copies of single-stranded RNA as the genome. Within the viral capsid are important viral enzymes called reverse transcriptase, integrase, and protease. The HIV virus has a spike protein that is called gp120, and the host cell receptor is CD4+. HIV belongs to a class of viruses called retroviruses. Retroviruses are RNA viruses, and to replicate or reproduce, they must make a DNA copy of their RNA through transcription and translation. It is the DNA genes that allow the

HIV is a sexually transmitted disease that attacks the body’s immune system by diminishing CD4 cells that help prevent and fight illnesses. HIV is a virus, more specifically a retrovirus that transcribes its RNA into the host cell’s DNA, and is spread by a transfer in bodily fluids namely drug injection and condomless sex. As the disease progresses into acquired immune deficiency syndrome (AIDS), the virus continues eliminating CD4 cells until the immune system becomes virtually ineffective [5]. Scientists first identified HIV in 1985 in response to the AIDS crisis plaguing the United States [6]. With no cure yet available, those affected with HIV must rely on antiretroviral drug therapy to decrease their chances of developing AIDS [7].

HIV stands for human immunodeficiency virus and can lead to acquired immunodeficiency syndrome (AIDS) if not treated (About HIV/AIDS, n.d). Unlike some other viruses, the human body cannot fully rid itself of HIV completely, even with treatment. Simply put, once you contract HIV, you have it for life. This disease attacks the body’s immune system, specifically the CD4 cells (T cells), which help the immune system stave off infections. When left to its own devices, HIV reduces the number of CD4 cells (T cells) in the body, making the person more likely to

What is HIV? It is a virus that attacks the body’s immune system that can lead to acquired immunodeficiency syndrome or AIDS if not treated. The Kaiser Family Foundation (2008), states that HIV attacks the body’s immune system, specifically the CD4 cells (T cells), which help the immune system fight off infections. If left untreated, it reduces the number of T-Cells in the body, making the person more likely to get other infections. Also noted is the fact that HIV destroys so many of these cells that it renders the body helpless in fighting off the infections, while it takes advantage of the weaker immune system. This occurrence is part of the

Human immunodeficiency virus (most commonly known as HIV) is a virus that damages the cells in your immune system, affecting the body’s natural defence system against

According to the Centers for Disease Control and Prevention (CDC), over 50% of youth with HIV in the United States do not know they are infected. (www.cdc.gov/hiv/risk/age/youth). Human immunodeficiency virus (HIV) is a pandemic burden that has inundated the world for decades. Evident populaces persist more vulnerable than others. The control of this potentially lethal virus is possible nonetheless; early detection through screening and adequate treatment is needed to stop the blowout.

HIV, the Human Immunodeficiency Virus, was first discovered by CDC in 1981 [3], then described as HTLV-III in 1983 and was later changed into its current name. Ever since its emergence, this virus has caused millions of infections throughout the world, with most of the cases originating in the African region [1]. This retrovirus has made it difficult in the past for scientists to treat it since it changes its RNA once inside the cell to DNA, through the enzyme reverse transcriptase, and keeps changing its genetic information making it difficult to target a specific genome. The main concern of HIV is the development into AIDS, Acquired Immunodeficiency Disorder, which targets the body’s own T-cells through targeting the CD4 and co-receptors leading to various opportunistic infections and, eventually, death.

HIV, also known as the human immunodeficiency virus attacks and destroys the CD4 cells of the immune system. The CD4 are a type of white blood cell that have the role of preventing disease, when the level of these cells reduces due to the HIV virus the ability of the body to fight and prevent disease also reduces; at this stage a person is said to have the acquired immunodeficiency syndrome (AIDs).

Human immunodeficiency virus (HIV) is a virus that alters the immune system, making the population with HIV vulnerable to infections and diseases. HIV can be found in the body fluids of an infected person. The virus is passed from one person to another through blood-to-blood and sexual contact. HIV can be transmitted in many ways, such as vaginal, oral sex, anal sex, blood transfusion, and contaminated needles. Patients with HIV cannot clear to virus out of their bodies like most other viruses do. Once a patient is diagnosed with HIV, he will have it for life. According to the Center for Disease Control and Prevention (2015), HIV can stay in the body for a long time and attack ones T-cells or CD4 cells, which are the cells that are needed

Human Immunodeficiency Virus (HIV) is a retrovirus responsible for the acquisition of HIV infection which leads to the development of acquired immunodeficiency syndrome (AIDS). HIV targets cells that are part of the human immune system such as CD4+ T cells, macrophages and dendritic cells which results in the levels of these cells falling dangerously low as they are exterminated via different mechanisms. Such mechanisms typically involve the induction of signaling cascades that result in 'self-killing' protocols being executed by the cell, as well as becoming targets for direct killing of other cytotoxic cells in the immune system. As HIV is a lentivirus it contains two single-stranded, positive sense, RNA molecules each coding nine viral

Human Immunodeficiency Virus or HIV is a Lentivirus. HIV like all other viruses attacks the immune system. In case most of viruses our immune

AIDS (acquired immunodeficiency syndrome) is a chronic, potentially life threatening condition caused by the human immunodeficiency virus (HIV). (“HIV/AIDS”, 2014). HIV is a virus spread through body fluids that affects specific cells of the immune system, called CD4 cells, or T cells. (“About HIV/AIDS,” 2014). Eventually the body 's immune system is worn down and additional sicknesses (opportunistic infections) attack otherwise healthy cells and the body is unable to fight them off. HIV then leads to an AIDS infection. The body 's immune system is able to fight many viruses but this is not the case with AIDS; no cure is in existence at this time.

HIV is the human immunodeficiency virus that causes AIDS. A member of a group of viruses called retroviruses, HIV infects human cells and uses the energy and nutrients provided by those cells to grow and reproduce. AIDS (acquired immunodeficiency syndrome) is a disease in which the body's immune system breaks down and is unable to fight off certain infections, known as "opportunistic infections," and other illnesses that take advantage of a weakened immune system. When a person is infected with HIV, the virus enters the body and lives and multiplies primarily in the white blood cells. These are the immune cells that normally protect us from disease.

The Human Immunodeficiency Virus is from a sub group from retrovirus called Lentivirus which causes HIV infection leading to Acquired Immunodeficiency Syndrome (AIDS). AIDS is a human condition which progresses to the failure of the immune system causing life-threatening opportunistic infections and cancers to thrive. Without treatment, survival time after infection with HIV is estimated to be 9 to 11 years, depending in the HIV subtype. Vital cells in the human immune system such as helper T cells (specifically CD4+ T cells), macrophages, and dendritic cells are the main target of HIV. HIV infection leads to decreased CD4+ T cells through a number of mechanisms like apoptosis of uninfected bystander cells, pyroptosis of abortively infected T cells, direct viral killing of infected cells and killing of CD4+ T cells that are infected by CD8 cytotoxic lymphocyte. When CD4+ T cells decreased into a number below critical level, cell- mediated immunity is lost making the body more susceptible to opportunistic infections.

HIV works by compromising the immune system of a person that has been infected. It acts like a retrovirus, meaning it is composed of RNA and not DNA. Like other retroviruses, HIV has the ability to enter a cell and then use the machinery of its host to replicate itself. It does this by transcribing its RNA into the DNA of the host cell. After this occurs, the cell will translate and transcribe viral genes along with its own. Once a cell is infected, then, it is transformed into the perfect factory for producing copies of the virus.