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Overview of signal transduction pathways involved in apoptosis. Cell death is the event of a biological cell ceasing to carry out its functions. This may be the result of the natural process of old cells dying and being replaced by new ones, as in programmed cell death, or may result from factors such as diseases, localized injury, or the death of the organism of which the cells are part.
This occurs most commonly after the treatment of lymphomas and leukemias and in particular when treating non-Hodgkin lymphoma, acute myeloid leukemia, and acute lymphoblastic leukemia. [ 2 ] [ 3 ] This is a potentially fatal complication and people at an increased risk for TLS should be closely monitored while receiving chemotherapy and should ...
In adaptation to higher tendency of cell death, blind mole rats evolved a mutation in the tumor suppressor protein p53 (which is also used in humans) to prevent cells from undergoing apoptosis. Human cancer patients have similar mutations, and blind mole rats were thought to be more susceptible to cancer because their cells cannot undergo ...
Disseminating cancer cells can proliferate or become dormant depending on the microenvironment and factors such as the ERK/p38 ratio. Dormancy is a stage in cancer progression where the cells cease dividing but survive in a quiescent state while waiting for appropriate environmental conditions to begin proliferation again. [1]
Apoptosis is a multi-step, multi-pathway cell-death programme that is inherent in every cell of the body. In cancer, the apoptosis cell-division ratio is altered. Cancer treatment by chemotherapy and irradiation kills target cells primarily by inducing apoptosis. [98]
In order to be diagnosed with CLL, the patient must have a white blood cell count greater than 5 billion cells per liter (L) (5x10 9 /L) of blood. If CLL-type cells are mainly found in the lymph nodes or lymphoid tissue (such as the spleen), a diagnosis of small lymphocytic lymphoma (SLL) is made. [ 43 ]
Research has revealed that neural progenitor cells are particularly vulnerable to the cytotoxic effects of chemotherapy agents. 5-fluorouracil has been demonstrated to reduce the viability of neural progenitor cells by 55–70% at concentrations of 1 μM, whereas cancer cell lines exposed to 1 μM of 5-fluorouracil were unaffected. [24]
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [3] [4] Cancer can be difficult to diagnose because its signs and symptoms are often nonspecific, meaning they may be general phenomena that do not point directly to a specific disease process.