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Question
HIV causes immunodeficiency by destroying
HIV causes immunodeficiency by destroying
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Solution
The correct option is A helper T lymphocytes
HIV (Human immunodeficiency virus) is a retrovirus that causes Acquired immunodeficiency syndrome in an individual by attacking and destroying the helper T lymphocytes in the body. The helper T cells in the body are responsible for the stimulation of B lymphocytes to produce antibodies against antigens/virus and triggering the cytotoxic T cells to kill any foreign cell that enters the body.
When the immune system loses its ability to fight infectious diseases, the condition is called immunodeficiency.
Thus the destruction of T-lymphocytes causes a severe deficiency in the immune system, making the person vulnerable to opportunistic infections which can only attack when the immunity is compromised.
The virus initially attacks and multiplies within the macrophages which act as the reservoirs. Viral particles released from the macrophages start attacking the helper T cells and direct them to assist in production of viral progeny. The progeny viruses further infect more T helper cells and the chain continues, leading to a collapse of the immune system.
Erythrocytes are red blood cells, carry haemoglobin to transfer oxygen to cells. They do not play any role in immunity.
Thrombocytes are the blood platelets that are involved in blood clotting and have no role to play in HIV infection.
HIV (Human immunodeficiency virus) is a retrovirus that causes Acquired immunodeficiency syndrome in an individual by attacking and destroying the helper T lymphocytes in the body. The helper T cells in the body are responsible for the stimulation of B lymphocytes to produce antibodies against antigens/virus and triggering the cytotoxic T cells to kill any foreign cell that enters the body.
When the immune system loses its ability to fight infectious diseases, the condition is called immunodeficiency.
Thus the destruction of T-lymphocytes causes a severe deficiency in the immune system, making the person vulnerable to opportunistic infections which can only attack when the immunity is compromised.
The virus initially attacks and multiplies within the macrophages which act as the reservoirs. Viral particles released from the macrophages start attacking the helper T cells and direct them to assist in production of viral progeny. The progeny viruses further infect more T helper cells and the chain continues, leading to a collapse of the immune system.
Erythrocytes are red blood cells, carry haemoglobin to transfer oxygen to cells. They do not play any role in immunity.
Thrombocytes are the blood platelets that are involved in blood clotting and have no role to play in HIV infection.
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