Search results
Results from the WOW.Com Content Network
These surviving cells accumulate various genetic changes over time, eventually producing a new tumor cell. It can take up to weeks, months, or even years for cancer to return. Following surgery and/or chemotherapy or radiotherapy, certain tumor cells may persist and develop resistance to treatment and eventually develop into new tumors. The ...
Drugs can enter into a cell in few kinds of ways. Major routes are: diffusion across the plasma membrane, through receptor or transporter or by the endocytosis process. Cancer can develop the resistance by mutations to their cells which result in alterations in the surface of cells or in impaired endocytosis.
Pain in cancer can be produced by mechanical (e.g. pinching) or chemical (e.g. inflammation) stimulation of specialized pain-signalling nerve endings found in most parts of the body (called nociceptive pain), or it may be caused by diseased, damaged or compressed nerves, in which case it is called neuropathic pain.
Antineoplastic resistance, often used interchangeably with chemotherapy resistance, is the resistance of neoplastic (cancerous) cells, or the ability of cancer cells to survive and grow despite anti-cancer therapies. [1] In some cases, cancers can evolve resistance to multiple drugs, called multiple drug resistance.
Scientist Otto Warburg, whose research activities led to the formulation of the Warburg hypothesis for explaining the root cause of cancer.. The Warburg hypothesis (/ ˈ v ɑːr b ʊər ɡ /), sometimes known as the Warburg theory of cancer, postulates that the driver of carcinogenesis (cancer formation) is insufficient cellular respiration caused by insult (damage) to mitochondria. [1]
Nocodazole is an antineoplastic agent which exerts its effect in cells by interfering with the polymerization of microtubules. [1] Microtubules are one type of fibre which constitutes the cytoskeleton, and the dynamic microtubule network has several important roles in the cell, including vesicular transport, forming the mitotic spindle and in cytokinesis.
As they grow, tumors compress, consume, infiltrate or cut off blood supply to body tissues, which can cause pain. [4] [8] Fracture. Rib fractures, common in breast, prostate and other cancers with rib metastases, can cause brief severe pain on twisting the trunk, coughing, laughing, breathing deeply or moving between sitting and lying. [4]
Tumor stroma and extracellular matrix in hypoxia. Tumor hypoxia is the situation where tumor cells have been deprived of oxygen.As a tumor grows, it rapidly outgrows its blood supply, leaving portions of the tumor with regions where the oxygen concentration is significantly lower than in healthy tissues.