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Chapter 38

Cancer

ما هو السرطان؟
ما هو السرطان؟
Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially ...
تنشأ السرطانات من طفرات جسدية في خلية واحدة
تنشأ السرطانات من طفرات جسدية في خلية واحدة
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate ...
تطور الورم
تطور الورم
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the ...
آليات التكيف في الخلايا السرطانية
آليات التكيف في الخلايا السرطانية
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, ...
البيئة المكروية للورم
البيئة المكروية للورم
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood ...
الانبثاث
الانبثاث
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) ...
الجينات الحرجة للسرطان I: الجينات المسرطنة الأولية
الجينات الحرجة للسرطان I: الجينات المسرطنة الأولية
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, ...
الجينات الحرجة للسرطان II: الجينات الكابتة للورم
الجينات الحرجة للسرطان II: الجينات الكابتة للورم
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, ...
فقدان وظائف الجينات المثبطة للورم
فقدان وظائف الجينات المثبطة للورم
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable ...
جين الورم الأرومي الشبكي
جين الورم الأرومي الشبكي
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable ...
آليات السرطانات التي يسببها الفيروسات القهقرية
آليات السرطانات التي يسببها الفيروسات القهقرية
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of ...
فيروس ساركوما روس (RSV) والسرطان
فيروس ساركوما روس (RSV) والسرطان
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He ...
جين راس
جين راس
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family ...
إشارات mTOR وتطور السرطان
إشارات mTOR وتطور السرطان
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a ...
الخلايا الجذعية السرطانية وصيانة الورم
الخلايا الجذعية السرطانية وصيانة الورم
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often ...
دراسة نماذج الفئران للسرطان
دراسة نماذج الفئران للسرطان
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are ...
الوقاية من السرطان
الوقاية من السرطان
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular ...
علاجات السرطان
علاجات السرطان
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients. However, ...
علاجات السرطان المستهدفة
علاجات السرطان المستهدفة
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between ...
علاج السرطانات المقاومة
علاج السرطانات المقاومة
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify ...
العلاجات المركبة والطب الشخصي
العلاجات المركبة والطب الشخصي
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a ...
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