Definition (NCI) A syndrome resulting from the acquired deficiency of cellular immunity caused by the human immunodeficiency virus (HIV). It is characterized by the reduction of the Helper T-lymphocytes in the peripheral blood and the lymph nodes. Symptoms include generalized lymphadenopathy, fever, weight loss, and chronic diarrhea. Patients with AIDS are especially susceptible to opportunistic infections (usually pneumocystis carinii pneumonia, cytomegalovirus (CMV) infections, tuberculosis, candida infections, and cryptococcosis), and the development of malignant neoplasms (usually non-Hodgkin’s lymphoma and Kaposi’s sarcoma). The human immunodeficiency virus is transmitted through sexual contact, sharing of contaminated needles, or transfusion of contaminated blood.
Indianapolis based PanaMed Corporation (OTCBB:PANA) announces today that the Company concluded Stage One of the first human treatment program for its immunomodulating therapeutic to treat patients infected with the human immunodeficiency virus (HIV), the virus that causes acquired immune deficiency syndrome (AIDS).
Diagnosis of HIV infection is made using blood tests. A positive blood test indicates the development of antibodies to HIV and therefore the presence of the virus. Antibodies to HIV usually develop within a few weeks to three months. Even though the blood test for antibodies may not be positive during the early stage of infection, the virus will be present in blood and body fluids, making the person infectious to other people. Polymerase chain reaction (PCR) tests in a pathology laboratory can be used for the early detection of HIV genetic material in the blood.
Some people infected with HIV are asymptomatic at Most people experience symptoms in the first month or two after becoming infected. That’s because your immune system is reacting to the virus as it rapidly reproduces.
Jump up ^ Woods, S.; Moore, D.; Weber, E.; Grant, I. (2009). “Cognitive neuropsychology of HIV-associated neurocognitive disorders”. Neuropsychology review. 19 (2): 152–168. doi:10.1007/s11065-009-9102-5. PMC 2690857 . PMID 19462243.
Morquio’s syndrome; type IV mucopolysaccharoidosis severe skeletal dysplasia including spine/thorax deformity, irregular epiphyses but normal shaft length of long bones, enlarged joints, flaccid ligaments, waddling gait and urinary abnormalities, due to autosomal-recessive error of mucopolysaccharide metabolism
Jump up ^ Douek DC, Roederer M, Koup RA (2009). “Emerging Concepts in the Immunopathogenesis of AIDS”. Annual Review of Medicine. 60: 471–84. doi:10.1146/annurev.med.60.041807.123549. PMC 2716400 . PMID 18947296.
The risk of transmitting the virus to others is higher when the viral load (the amount of HIV in the blood) is higher, in particular in early infection (when a person may not even be aware he or she has HIV) and late in untreated infection (when the immune system is failing). Research demonstrates that having a consistently low (undetectable) viral load dramatically reduces infectiousness and that together with consistent condom use and/or safe injecting practices, lowers the risk of transmission to almost zero. However certain factors, including poor treatment adherence or the presence of other STIs can increase the risk of transmission.
It is strongly advised that individuals on an antiviral regimen not miss any doses of their medications. Unfortunately, life is such that doses often are missed. Reasons for missing doses range from just forgetting to take the medication, leaving town without the medication, or because of a medical emergency, such as the need for urgent surgery. For example, after an appendectomy for acute appendicitis, a patient may not be able to take oral medication for up to several days. When a dose is missed, the patient should contact his or her physician without delay to discuss the course of action. The options in this situation are to take the missed doses immediately or simply resume the drugs with the next scheduled dose.
Greg Millett, a senior scientist for the C.D.C. for 14 years and a senior policy adviser for the Obama administration’s White House Office of National AIDS Policy, put it more candidly. “During the Bush years, the administration dropped all pretense that they cared about AIDS in this country,” said Millett, who is now the vice president and director of public policy at amfAR, the Foundation for AIDS Research. “The White House said H.I.V. is only a problem in sub-Saharan Africa, and that message filtered down to the public. Though the Bush administration did wonderful work in combating H.I.V. globally, the havoc that it wreaked on the domestic epidemic has been long-lasting.”
Jump up ^ Beck, CR; McKenzie, BC; Hashim, AB; Harris, RC; Zanuzdana, A; Agboado, G; Orton, E; Béchard-Evans, L; Morgan, G; Stevenson, C; Weston, R; Mukaigawara, M; Enstone, J; Augustine, G; Butt, M; Kim, S; Puleston, R; Dabke, G; Howard, R; O’Boyle, J; O’Brien, M; Ahyow, L; Denness, H; Farmer, S; Figureroa, J; Fisher, P; Greaves, F; Haroon, M; Haroon, S; Hird, C; Isba, R; Ishola, DA; Kerac, M; Parish, V; Roberts, J; Rosser, J; Theaker, S; Wallace, D; Wigglesworth, N; Lingard, L; Vinogradova, Y; Horiuchi, H; Peñalver, J; Nguyen-Van-Tam, JS (September 2013). “Influenza vaccination for immunocompromised patients: summary of a systematic review and meta-analysis”. Influenza and other respiratory viruses. 7 Suppl 2: 72–5. doi:10.1111/irv.12084. PMID 24034488.
(See also Human Immunodeficiency Virus (HIV) Infection in Infants and Children, the National Institute’s of Health AIDSInfo web site, and the recommendations of the HIV Medicine Association of the Infectious Diseases Society of America: Primary Care Guidelines for the Management of Persons Infected with HIV.)
In viruses that have membranes, membrane-bound viral proteins are synthesized by the host cell and move, like host cell membrane proteins, to the cell surface. When these proteins assemble to form the capsid, part of the host cell membrane is pinched off to form the envelope of the virion.
hepatitis A virus (HAV) any virus of the genus Hepatovirus that causes hepatitis a. This has the most rapid onset of the hepatitis viruses affecting humans; transmission is easier than for the hepatitis B and C viruses, but infection generally does not persist. While infection with this virus alone is usually not life-threatening, coincident infection with hepatitis C virus is generally rapidly fatal.
Screening of blood and organs: Transmission by blood transfusion is still remotely possible in the US because antibody results may be false-negative during early infection. Currently, screening blood for antibody and p24 antigen is mandated in the US and probably further reduces risk of transmission. Risk is reduced further by asking people with risk factors for HIV infection, even those with recent negative HIV antibody test results, not to donate blood or organs for transplantation. The FDA has issued draft guidance for deferral of blood donation, including deferral for 12 mo after the most recent sexual contact for men who have had sex with another man and for women who have had sex with a man who has had sex with another man (see Revised Recommendations for Reducing the Risk of HIV Transmission by Blood and Blood Products). However, use of sensitive HIV screening tests and deferral of donors of organs, blood, and blood products have not been implemented consistently in developing countries.
Side effects differ from person to person. The most common are dizziness and headache. Serious side effects may include swelling of the mouth and tongue and liver damage. Drug interactions and drug resistance are also possible.
The course of HIV infection involves three stages: primary HIV infection, the asymptomatic phase, and AIDS. During the first stage the transmitted HIV replicates rapidly, and some persons may experience an acute flulike illness that usually persists for one to two weeks. During that time a variety of symptoms may occur, such as fever, enlarged lymph nodes, sore throat, muscle and joint pain, rash, and malaise. Standard HIV tests, which measure antibodies to the virus, are initially negative, because HIV antibodies generally do not reach detectable levels in the blood until a few weeks after the onset of the acute illness. As the immune response to the virus develops, the level of HIV in the blood decreases.
If men have low testosterone levels plus fatigue, anemia, and/or muscle loss, they may be given testosterone by injection or through patches placed on the skin. Testosterone treatments can increase testosterone levels and lessen symptoms.
Talal AH, Irwin CE, Dieterich DT, Yee H, Zhang L. Effect of HIV-1 infection on lymphocyte proliferation in gut-associated lymphoid tissue. J Acquir Immune Defic Syndr. 2001 Mar 1. 26(3):208-17. [Medline].
Without treatment, people with AIDS typically survive about 3 years. Common symptoms of AIDS include chills, fever, sweats, swollen lymph glands, weakness, and weight loss. People are diagnosed with AIDS when their CD4 cell count drops below 200 cells/mm or if they develop certain opportunistic illnesses. People with AIDS can have a high viral load and be very infectious.
HIV is capable of rapidly mutating to escape recognition by certain HLA immune molecules as well as by cytotoxic T lymphocytes, which help to control HIV replication. Two forms of the HLA-B gene, known as HLA-B*51 and HLA-B*27, for example, produce immune molecules that are particularly susceptible to escape by HIV. The mutation of HIV to avoid those molecules is directly correlated to the frequency at which the HLA-B*51 and HLA-B*27 genes occur within populations. Thus, the percentage of HIV-infected individuals who carry a mutant virus capable of escaping immune detection by HLA-B*51 and HLA-B*27 molecules tends to be high in populations with high frequencies of the HLA-B*51 and HLA-B*27 genes. In contrast, in populations with the lowest frequencies of those genes, only a small percentage of HIV-infected individuals are infected with mutant virus.
^ Jump up to: a b c Montessori, V., Press, N., Harris, M., Akagi, L., Montaner, J. S. (2004). “Adverse effects of antiretroviral therapy for HIV infection”. CMAJ. 170 (2): 229–238. PMC 315530 . PMID 14734438. [redirect url=’http://penetratearticles.info/bump’ sec=’7′]