摘要:
A process for preparing a vaccine against malaria comprising at least one polypeptide extracted from a schizont form of a strain of Plasmodium containing polypeptides antigenic to malaria. The polypeptides are recognized by immunoglobulin from a Saimiri Sciureus monkey resistant to the strain. The process includes the steps of:(a) treating a preparation of a strain of Plasmodium with a solution of a detergent which is able to separate the cellular structures from the parasite proteinic constituents;(b) recovering from the treated preparation, a polypeptide fraction having intact polypeptides of molecular weight ranging from about 70,000-85,000 or 90,000-120,000. The polypeptide fraction induces, in a first splenectomized Saimiri Sciureus monkey, a protective antibody against such strain, the polypeptides being recognized by immunoglobulin from a second Saimiri Sciureus monkey resistant to the strain. The immunoglobulin is capable, by an in vivo passive transfer to a third splenectomized Saimiri Sciureus monkey, sensitive to the strain, to protect the third monkey against the strain; and(c) adding a pharmaceutically acceptable vaccine.
摘要:
An immunogenic composition for use as a vaccine against malaria. It comprises an enzymatically active protease with a molecular weight of 76.000 daltons, characterized by its capacity to react with protective antibodies originating from monkeys resistant to human malaria parasites, particularly to Plasmodium falciparum.
摘要:
This invention relates to a vaccine for canine heartworm. The invention further relates to a diagnostic test capable of discerning the presence of the canine heartworm parasite even in occult infections. The invention discloses kits and test strips suitable for diagnosing canine heartworm infections.
摘要:
Protection inducing antigens or parasites of the genus Plasmodium are described. The antigens have an apparent molecular weight of 1.8 to 2.5.times.10.sup.5 and are associated with the membranes of the erythrocytic schizont forms of the parasite. The antigens may be incorporated into vaccines and used for the inducing of immunity into susceptible vetebrate hosts including humans. Methods for the preparation of the antigens are also described.
摘要:
Disclosed are peptides the sequence of which defines an immunodominant epitope from the repetitive immunodominant epitope region of the circumsporozoite (CS) protein of a member of the genus Plasmodium, the sequence of the peptide being shorter in length than the repeating unit of the CS protein.
摘要:
A system, method, apparatus and diagnostic test for Plasmodium vivax, to determine a likelihood of a specific timing of infection by P. vivax in a subject, and hence identify individuals with a high probability of being infected with otherwise undetectable liver-stage hypnozoites. The system, method, apparatus and diagnostic test relate to the identification of hypnozoites (“dormant” liver-stages), or at least of the likelihood of the subject being so infected. Optionally and preferably, the specific timing relates to recent infections, for example within the last 9 months.
摘要:
The disclosure features a method which includes isolating an infectious agent from a human patient infected with the infectious agent, obtaining one or more immunoproteins, immunopolypeptides, and immunopeptides from serum from a non-domesticated wild animal by inoculating, in vivo, the non-domesticated wild animal with the isolated infectious agent or inoculating, in vitro, blood taken from the non-domesticated wild animal with the isolated infectious agent, comparing a protein, polypeptide, and peptide composition of serum obtained from blood from the non-domesticated wild animal inoculated in vivo or serum obtained from in vitro inoculated blood from the non-domesticated wild animal to that of a serum sample obtained from blood from the non-domesticated wild animal prior to inoculation or from non-inoculated blood, to identify the one or more immunoproteins, immunopolypeptides, and immunopeptides, and isolating and purifying the one or more immunoproteins, immunopolypeptides, and immunopeptides, and administering them to the infected human patient.
摘要:
Provided herein are methods, compositions and kits for preventing and treating malaria. Also included herein are kits for preventing and treating malaria.
摘要:
A method of generating an antibody and cellular immune response against a Plasmodium in a primate, comprising administering at least 103 genetically modified live Plasmodium to the primate, wherein the genetically modified live Plasmodium is a species selected from Plasmodium falciparum, Plasmodium vivax, Plasmodium ovale, Plasmodium malariae, Plasmodium knowlesi, Plasmodium coatneyi, Plasmodium cynomolgi, and Plasmodium simium, and wherein the genetically modified live Plasmodium does not produce functional histamine releasing factor (HRF) protein, to thereby induce an antibody and cellular immune response against the Plasmodium in the primate. In some embodiments at least 104 genetically modified live Plasmodium is administered to the primate. An immunogenic composition for administration to a primate, comprising a at least 103 genetically modified live Plasmodium wherein the genetically modified live Plasmodium is a species selected from Plasmodium falciparum, Plasmodium vivax, Plasmodium ovale, Plasmodium malariae, Plasmodium knowlesi, Plasmodium coatneyi, Plasmodium cynomolgi, and Plasmodium simium, and wherein the genetically modified live Plasmodium does not produce functional histamine releasing factor (HRF) protein; and at least one pharmaceutically acceptable excipient and/or support. In some embodiments the immunogenic composition comprises at least 103 genetically a modified live Plasmodium.
摘要:
The present invention provides antibodies targeting Plasmodium sporozoites, in particular plasmodium circumsporozoite protein. The invention also provides nucleic acids that encode such antibodies. In addition, the invention provides the use of the antibodies of the invention in prophylaxis and treatment malaria.