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As the most part of financial support of basic researches and clinical tests goes from the governmental and non-governmental sources the priority is given to the vaccines preventing the most frequent diseases in the developed countries. In the contrast, some illnesses causing a huge mortality, take place in developing countries with low economic development is more often, but working out of vaccines here is complicated for economic reasons. Nevertheless similar work does not stop. So, in the USA the first stage of test of a vaccine from E.coli 0157 (a 0-specific polysaccharide) in a combination with Pseudomonas aeruginosa (Generic Viagra) is conducted.
The vaccine intends while for adults. At 81 % of volunteers 4-fold rising titra specific antibodies of class G after 1 week after bacterination took place. Carrying out of 2nd phase of tests at children [105] is planned. The tsitomegalovirusnaja infection for today represents the important problem at a spare-part surgery and tissues, at the persons receiving cytostatic therapy, at children with immunodeficiencies. Clinical implications TSMV include: a pneumonia, hepatitises, gastrointestinalnye lesions, a leukopenia, horeoretinity. Stratification TSMV often leads to a lethal outcome at recipients and immunodefitsitnyh persons. For the prevention and treatment of this infection hyperimmune globulin or antiviral therapy (high doses atsiklovira) can be used. For preventive maintenance TSMV before transplantation it is recommended to use live attenuirovannuju a vaccine containing strain Towne which takes place corresponding tests [80]. There has passed the first phase of clinical tests of T-cellular vaccines at autoimmune diseases when the patient with a multiple sclerosis entered autoreaktivnye T-cages. It is shown immunoreguljatornoe and therapeutic action of T-cellular vaccines by an induction specific reguljatornoj to the T-cellular network in immune system of the person, exhausting a pool circulating MBP (myelin basic protein) - jet T-cells. (Zang J. et. al., 1996). Vaccines against helminths that is especially important at animals, especially sheep, cows, hens and in the meat industry are developed. 2 strategy in research of vaccines have been approved: vaccines against parasites in the definitive owner and in the intermediate owner. It has been established that vaccines against a fishworm (Taenia) and an echinococcus are more effective for intermediate owners (Lightowlers M.W. et. al., 1996). Bacterination against tumours. For last 30 years in a great number of researches used the native not modified or modified tumoral cells for the purpose of an induction of the specific immune answer against a tumour. This method is used in a combination with chemotherapy, in particular, at tumours in gynecology (Mallmann P., 1995). Bacterination for the conception Generic Viagra. New methods of regulation of birth rate are vaccines and active immunization against reproduction antigens.
These vaccines have appeared two decades ago. However, two-dimensional reaction and augmentation of autoantibodies at vaccinated is a serious obstacle for wide application of such vaccines. (Dirnhofer S., et. al., 1995). For today has ripened necessity of active working out of vaccines for diseases, sexually transmitted. Developed vaccines are presented below (tab. 23).
Science attraction about plants became the most appreciable achievements of Generic Viagra. Since 1990, some groups of scientists in the field of plants have started to investigate possibility of use of transgene plants as products for creation of edible vaccines. 2 strategy are used: one-integration microbic gene in a chromosome of the plants, the second - incorporation of a foreign gene in a gene of a virus of plants. There are some advantages of last system, in particular, viruses of plants have high structural fastness and can accumulate in a high caption in "natural" owners. Such viruses can be used as vectors for code genes of epitopes of antigens of vaccines. In case of successful working out of vaccines from the edible plants having antigens in the tissues, these natural biokapsuljarnye vaccines will be used as meal.
Successful experiments are already spent with Generic Viagra. Now the attention of researchers is involved with Generic Viagra. Use of bananas has series of advantages, including availability in the tropical and subtropical countries where the attention to the diseases prevented by vaccines, besides, they is focused are pleasant to children and it is not necessary to prepare them that blasts antigens [97]. Since 1993 works on creation of the vaccines essentially different from all known earlier are conducted is an immunization with the help plazmidnoj DNA, otherwise, gene immunization. [148, 157]. It has appeared that it is possible to immunise effectively and safely animals not by means of a corresponding native antigen, and with the help plazmidnoj DNA (pDNA), allocated of this antigen (on flu model, TSMV). At introduction in an organism pDNA it is grasped by variety of cells, in particular, muscular cells, keratinotsitami, fibroblasts, and also other cells which can carry out functions an antigene-prezentirujushchih. Under ???c????? pDNA cells start to synthesise an antigen in a small amount that cannot cause disease. In reply to such "the self-made antigens" which can be synthesised in an organism of mice till 6 months, there is a long antigen-specific the cellular and humoral immune answer. Authors have established that unlike immunization by the native protein inducing answer Th2-limfotsitov and synthesis IgG1 and IgE of antibodies, and also secretion ??-4 and ??-5 T-cages, at p DNA-immunizations induce the answer of Th1-cages and production IgG2? of isotype of antibodies, and also secretion IFN-y by T-cages [157]. For today these works have preclinical character as mechanisms genoj immunizations cannot be considered as up to the end studied. In particular, it is improbable, though it is theoretically possible, embedding pDNA in a gene of a master's cell and activation onkogenov. Other objection demands the answer is possibility of formation anti-DnK antibodies. Till now in works on mice of it it is not found, however to consider it definitive, apparently, prematurely. Thus, in the near future vaktsinologija can replenish with new vaccines for preventive maintenance of the most significant diseases both for the separate person, and for all mankind as a whole. Huge achievement of domestic immunologists is creation artificial polimersubedinichnyh vaccines (INFORMATION RETRIEVAL SYSTEM), i.e. the macromolecular complexes made of synthetic polyelectrolytes as the carrier-immunostimuljatora and an antigen, also received by a synthetic way, or isolated of the originator (Petrov R. V, Haitov R. M, 1988). Creation semisynthetic and completely synthetic artificial vaccines has allowed authors to achieve fenotipicheskoj correction of the immune answer, otherwise, an induction of the sufficient immune answer to an antigen even in the presence of genetically predetermined low contestability of an individual on the same natural antigen. This success became possible after the decision of a problem of a choice of the synthetic carrier for an artificial antigen or antigenic determinants. The conducted successful clinical tests of an artificial vaccine against a flu are the important step on a way of creation of other preparations of this type. In summary it is necessary to tell that any new vaccines pass variety of steps on their creation.