Acquired immune deficiency syndrome

“ In some cases, clear induction of antibodies with activity in impairing parasite growth in a standardized growth inhibitory assay has been achieved [47] but that has not been associated with significant vaccine efficacy. A telling comparator may be that strong adjuvants have generally induced antibody levels comparable to those seen in semi-immune adults living in endemic areas. Such adults have significant protective immunity from natural exposure because they have antibody responses to very large numbers of antigens not just one or two as in vaccinees. ”

“ The migration reduces the viral presence in other parts of the body, with a corresponding diminution in physical manifestations of the disease. The virus, however, thrives in the lymph nodes, which, as a vital point of the body's immune response system, represents an ideal environment for the infection of other CD4‘ cells. ”

“ Genetic studies suggesting the role of heredity in the occurrence of lupus have begun to provide important information. The study of immunity, the body's ability to resist disease, is now pointing the way to an understanding of the relationship to lupus of abnormal immune reactions of the body. Although a cure must await further knowledge of the basic cause, presently available forms of treatment can frequently delay the often grave consequences of the disease. ”

“ In general, the innate and acquired immune responses are not activated independently. Their optimal performance is when they complement each other.
In particular, the AIS’ antibodies are able to direct the IIS’ components toward the relevant objects. ”

“ Immunity may be acquired in several ways. It is commonly known that one attack of certain communicable diseases renders the individual immune for a varying length of time, and sometimes for life. Among these diseases are smallpox, measles, whooping-cough, scarlet fever, infantile paralysis, typhoid fever, chicken-pox, and mumps; erysipelas and pneumonia on the other hand appear to diminish resistance and to leave a person more susceptible to later attacks. ”

“ Take, for example, individuals who have immunodepression either by a disease or iatrogenically by a drug.
We may show that the level of immune response is good, but that the durability of that might be different because of the compromise of the immune system in these individuals.
And then, we want to know: What is the efficacy of vaccination on reducing disease and transmission in certain special populations? There may be a difference between them and individuals in what we refer to as the “normal adult population.” ”

“ But out of an abundance of caution, you want to at least start off and show the proof of principle that you can get a vaccine that can induce a considerable amount of immune response in the form of antibodies certainly, and possibly T cells, that can address the specific variant. ”

“ Lupus is a chronic disease in which there is always the potential threat of serious illness and disability. The disease can occur in men, but women in their childbearing years are the majority of its victims. Minorities, especially blacks, are particularly vulnerable; lupus is three times more prevalent in black women than in white women.
Ordinarily, the immune system protects against infection by producing antibodies that successfully combat foreign substances. In people with lupus, the immune system produces abnormal antibodies that react harmfully against the individual's own tissues. ”

“ Response to treatment and disease progression linked to CD4+ T cell surface CC chemokine receptor 5 density in human immunodeficiency virus type 1 vertical infection. J Infect Dis 185: 1055–1061. Vincent T, Portales P, Baillat V, Eden A, Clot J, et al. (2006) The immunological response to highly active antiretroviral therapy is linked to CD4+ T-cell surface CCR5 density. J Acquir Immune Defic Syndr 43: 377–378. Taub DD, Turcovski-Corrales SM, Key ML, Longo DL, Murphy WJ (1996) Chemokines and T lymphocyte activation: I. Beta chemokines costimulate human T lymphocyte activation in vitro. ”

“ Serum samples may be tested for precipitating antibodies to the FMD VIAA, for neutralizing antibodies to FMDVs, SVDV, VESVs, and VSVs, and for CF antibodies to VSVs, with results available in 1-3 days. Virus-neutralizing antibodies are serotype-specific for FMDV, and animals infected for the first time characteristically develop the highest titer against the homologous subtype. Antibodies to FMD VIAA were used historically to differentiate the immune response to active infection from that of vaccination. ”

“ In the long run, provided the sick person survives, more antitoxine is generated than is required to save life. The excess remains in the system for a greater or lesser length of time, and this fact explains the individual's subsequent immunity to the disease from which he has recovered; any fresh invading force of the microbes of that disease finds that defensive preparations have been made in advance. In the case of some diseases this acquired immunity is usually lifelong, as in that of small-pox ”

“ It is not the home of the disease. We have to import it from abroad, and consequently [Pg 111] the vaccine points that are produced upon the spot which is the habitat of this particular disease are the only ones that will retain the virus in sufficient strength to enable it to render the human being vaccinated immune from smallpox. Consequently we can not, as has been expected by a great many people, raise our own vaccine points, because they lose their power for immunity against smallpox. ”

“ Nearly 75,000 Americans have been diagnosed as having the fatal disease AIDS, and more than 41,000 have already died from it. The Public Health Service estimates that an additional one to one-and-a-half million Americans have been infected by the Human Immunodeficiency Virus (HIV) , which causes AIDS. Most of the infected individuals now show no symptoms, but it is likely that over the next few years they will develop AIDS or AIDS-related illnesses. ”

“ Systemic lupus erythematosus or lupus is often called "the great impersonator" because it can mimic so many other diseases. A disorder of the body's immune system, lupus may affect the joints, the skin, and one or more internal organs (such as the kidneys, heart, and brain) in varying combinations. As many as 500,000 Americans-mostly women in their childbearing years-may suffer from this autoimmune disorder. ”

“ A “breakthrough infection,” or a vaccine failure, is when a person contracts an infection despite being vaccinated against it. We see this with all vaccines in clinical trials. And in the real world, no vaccine is 100 percent efficacious or effective, which means that you will always see breakthrough infections regardless of the efficacy of your vaccine.
There’s “primary vaccine failure,” when the body actually doesn’t amount an adequate immune response for a number of reasons. ”

“ Failure of human astrocytes to produce IL-1 is a highly unusual and significant species-dependent neuroimmune mechanism, akin to the inability of human macrophages and microglia to express iNOS [47] – [48] . We propose that acquiring the ability to express IL-1 (a myeloid-specific protein) could induce epithelial-mesenchymal transition (EMT) -like transformation of glioma cells resulting in increased migratory capacity, a unique gene signature and increased immune signaling (NF-κB, pSTAT3) . ”

“ As noted earlier, infection with HIV causes immediate abnormalities in a person's blood, and the infected person's white cell count continues to drop throughout the course of the disease, even when the attack is concentrated in the lymph nodes. In light of these facts, HIV infection must be regarded as a physiological disorder with a constant and detrimental effect on the infected person's hemic and lymphatic systems from the moment of infection. HIV infection satisfies the statutory and regulatory definition of a physical impairment during every stage of the disease. ”

“ Point number two is that the immunity to the infection is not solely determined by the percent of people who have antibodies. If you look at the research — and there's been about 24 papers at least on the immunity from T-cells — that's a different type of immunity than antibodies. And without being boring, the reality is that — according to the papers from Sweden, Singapore, and elsewhere — there is cross-immunity, highly likely from other infections, and there is also T-cell immunity. And the combination of those makes the antibodies a small fraction of the people that have immunity. ”

“ HIV destroys the immune system and attacks the central nervous system, leading to devastating physical consequences and then to death. Because the virus has a long incubation period and the progress of the disease varies sharply from individual to individual, people can unwittingly carry and spread it for years. ”

“ The results of this study conducted in a large, and well-characterized natural history cohort of HIV-infected individuals indicate that in addition to the traditional markers of vulnerability (baseline CD4+ T cell count, viral load and rate of CD4+ T cell decline) , the inclusion of a measure of genetic risk might offer an adjunctive, and complementary risk-stratification tool that may provide an improved method for identifying persons at high risk for future AIDS related events. ”

“ In fact, one of our newest and most reliable tests for the disease consists in a curious "clumping" or paralyzing power over cultures of the Bacillus typhosus, shown by a drop of the patient's blood, even as early as the seventh or eighth day of the illness. And, while it is an immensely difficult and complicated subject, we are justified in saying that this immunity is not merely a substance formed in the body, the stock of which will shortly become exhausted, but a faculty acquired by the body-cells, which they will retain, like other results of education, for years, and even for life. ”

“ Women who are infected with the human immuno-deficiency (HIV) virus can transmit the virus to their infants during pregnancy or at birth. Currently, about 84 percent of the AIDS cases in children result from perinatal transmission. The outlook for HIV-infected babies is grim. Almost half of these children develop AIDS in their first year, and nearly 70 percent develop AIDS by the end of their second year. ”

“ Using this approach, we have identified two surface-exposed antibody blockade epitopes that vary over time and were differentially recognized by four of the seven human mAbs. We also identified three antibodies which recognize either overlapping or three unique highly conserved epitopes within the GII.4 VLP. These data continue to support the hypothesis that norovirus long-term protective immune responses are elicited following acute infection, a concept essential for effective vaccine design. ”

“ HIV infection does fall well within the general definition set forth by the regulations, however.
The disease follows a predictable and, as of today, an unalterable course. Once a person is infected with HIV, the [p. 634] virus invades different cells in the blood and in body tissues. Certain white blood cells, known as helper T-lymphocytes or CD4+ cells, are particularly vulnerable to HIV. The virus attaches to the CD4 receptor site of the target cell and fuses its membrane to the cell's membrane. ”

“ There are some diseases in which there is little reason for thinking that any immunity is acquired, as in the case of tuberculosis, while there are others in which the immunity is very great and very lasting, as in the case of scarlet fever. Moreover, the immunity differs with individuals. While some persons appear to acquire a lasting immunity by recovery from a single attack, others will yield to a second attack very readily. ”

“ A related prime-boost approach is being developed by the US Naval Medical Research Centre, but here the priming vector is plasmid DNA, and a human adenovirus, Ad5, is used to boost the immune response [38] . As in the Oxford programme, several antigenic inserts from both pre-erythrocytic stage and blood stages are under assessment with some encouraging efficacy data in a recent challenge trial (T. Richie 2011, personal communication) . ”

“ When you think in terms of having an immunosuppressed state — for example, if you’re on glucocorticoids for rheumatoid arthritis or you’re on some of the monoclonal antibodies that block the markers of inflammation — that under those circumstances, if that’s where you are, there is not a safety issue with regard to the vaccine. ”

“ Differences in bovine lymphocyte antigen associations between immune responsiveness and risk of disease following intramammary infection with Staphylococcus aureus. J Dairy Sci 78:1937-1944.
Meeker, D. L.; Rothschild, M. F.; Christian, L. L.; Warner, C. M.; and Hill, H. T. 1987a. Genetic control of immune response to pseudorabies and atrophic rhinitis vaccines. I. Heterosis, general combining ability and relationship to growth and backfat. J Anim Sci 64:407-413.
___. 1987b. Genetic control of immune response to pseudorabies and atrophic rhinitis vaccines. ”

“ The virus concentrates in the blood. The assault on the immune system is immediate. The victim suffers from a sudden and serious decline in the number of white blood cells. There is no latency period. Mononucleosis-like symptoms often emerge between six days and six weeks after infection, at times accompanied by fever, headache, enlargement of the lymph nodes (lymphadenopathy) , muscle pain (myalgia) , rash, lethargy, gastrointestinal disorders, and neurological disorders. ”

“ The authors have discovered that in mice and human cells, the whole parasite or its antigens have a strong capacity to induce chronic Th2-type responses that are primarily characterized by high levels of Th2 cytokines, low proliferative responses in lymphocytes, an immature and LPS-tolerogenic profile in dendritic cells, the recruitment of myeloid-derived suppressor cells, and, specially, alternatively activated macrophages. ”