Citizendia

In epidemiology, a vector is an organism that does not cause disease itself but which transmits infection by conveying pathogens from one host to another. Epidemiology is the study of factors affecting the Health and Illness of populations and serves as the foundation and Logic of interventions made in the A disease is an abnormal condition of an organism that impairs bodily functions and can be deadly An infection is the detrimental Colonization of a host Organism by a foreign Species. A pathogen (from Greek πάθος pathos "suffering passion" and γἰγνομαι (γεν- gignomai (gen- "I give birth to" infectious In Biology, a host is an organism that harbors a Virus or Parasite, or a mutual or Commensal Symbiont, typically providing nourishment

A classic example is the anopheles mosquito which acts as a vector for the disease malaria by transmitting the malarial parasite plasmodium to humans. Anopheles is a Genus of Mosquito ( Culicidae) There are approximately 400 Anopheles species of which 30-40 transmit five different Malaria is a vector -borne Infectious disease caused by Protozoan Parasites It is widespread in tropical and subtropical regions including A plasmodium is also the macroscopic form of the Protist known as a Slime mould. In this case plasmodium is harmless to the mosquito (its intermediate host) but causes the disease malaria in humans (its definitive host). A plasmodium is also the macroscopic form of the Protist known as a Slime mould. Malaria is a vector -borne Infectious disease caused by Protozoan Parasites It is widespread in tropical and subtropical regions including

In molecular biology and genetic engineering a vector is a vehicle for transferring genetic material into a cell. Molecular biology is the study of Biology at a molecular level Genetic engineering, Recombinant DNA technology, genetic modification/manipulation (GM and gene splicing are terms that apply to the direct

A viral vector is a virus which has been modified to transduct specific genetic material into a cell, e. Viral vectors are a tool commonly used by molecular Biologists to deliver Genetic material into cells This process can be performed inside a living organism Transduction is the process by which DNA is transferred from one Bacterium to another by a Virus. g. for gene therapy. Gene therapy is the insertion of Genes into an individual's cells and tissues to treat a Disease, and Hereditary diseases in which a

A plasmid vector is made by splicing a DNA construct into a plasmid. A plasmid is an extra-chromosomal DNA molecule separate from the chromosomal DNA which is capable of replicating independently of the chromosomal DNA A DNA construct (stress on first syllable is an artificially constructed segment of Nucleic acid that is going to be "transplanted" into a target tissue A plasmid is an extra-chromosomal DNA molecule separate from the chromosomal DNA which is capable of replicating independently of the chromosomal DNA Various techniques are then used to transfect the plasmid into the cell. Transfection is the process of introducing nucleic acids into cells by non-viral methods.

Contents

Epidemiology

There are two types of vector that convey infectious organisms to a host: mechanical and biological. Microbes do not multiply within mechanical vectors - mechanical vectors only physically transport microbes from host to host. In contrast, microbes must propagate within a biological vector before the biological vector can transmit the microbes.

Molecular biology

Main article: Vector (molecular biology)

Cell transformation and gene therapy

DNA

See also

References

External links

© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
 Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic