ABCD's of Melanoma.

Malignant Melanoma is the most aggressive of malignant cutaneous tumours. Cases with lymphonode involvement, and distant metastases, carry a very poor prognosis, (50% and 20% respectively alive in 5 years), while those presenting without evident lymphonode involvement have a much better survival rate (60% alive in 5 years).

It is therefore extremely important to do early malignant melanoma diagnosis. There are several criteria that may lead to the diagnosis of a malignant melanoma. The most important one is the ABCD rule.

The ABCD diagnosis of Malignant Melanoma -
A = Asymmetry: Moles are commonly symmetrical and round. Very early melanomas, are asymmetrical assuming different forms. One half does not match the other half.
B = Border: Commonly moles, have even and smooth borders. Early melanomas, are usually uneven and notched borders. The edges are ragged, notched or blurred.
C = Color: Moles commonly are a single shade of brown, early malignant melanomas shows brown-tan or black color. Further, as melanomas progress, may see red, white, and blue color.
D = Diameter: Early malignant melanomas, differently from moles, tend to grow larger in diameter. First suspects in melanoma start from a 6 millimeters diameter on. Any sudden or continuing increase in size should be of special concern.

Synthesis: a mole with diameter of 6 millimeter, that it introduces alterations - irregular asymmetry, edges, color - must induce the patient to address early on dermatologist to careful clinical and dermatoscopic examination and consequently, if necessary, to surgical removal of the lesion, with successive hystological examination.

Melanoma Prevention
According to the risk factors for malignant melanoma, the following preventive measures are also recommended:

* UV exposure, should be reduced. Prolonged sunbathing, as well as the use of tanning lamps, is not recommended. Children, under three years of age, should be held in the shade.
* Sun protection, should be obtained through suitable clothing. Children should be peculiarly dressed when playing outside.
* Use adequate sunscreens.
* Sunburns should be avoided, particularly in children.

Therefore people with multiple and abnormal moles, or with a family history of malignant melanoma, should have their skin checked continuously by a doctor/dermatologist.

Simulation of tumor cord growth where conversion of the tumor to glycolytic (anaerobic) metabolism takes place under hypoxia. This video shows evolution of the region where the aerobic cells suffer from hypoxia (ATP deficit) as well as the limit where the glycolytic cells start suffering too. This video reflects work in progress and may be different from the final results.

Watch Captain Chemo and his cadets as they embark on five adventures dealing with different issues concerned with cancer. The animated adventures have been created by Gameplay's specialist multimedia division - doUno.com. The animated and interactive educational site is primarily aimed at cancer patients, relatives and friends to explain the disease and its treatment. You can assist Captain Chemo and Chemo Command to answer questions about cancer and search for the answers to gain points, together with manoeuvring the chemo craft to shoot and destroy tumours.

This month, pink products — from sneakers to vacuum cleaners — will pop up on store shelves. Even Campbell's Soup will shed its tomato red label in favor of pearly pink. Whatever your opinion on the pink campaign to raise awareness of and research dollars for breast cancer, the cause is unlikely to escape your notice during October, National Breast Cancer Awareness Month. Since nearly 200,000 women in the United States will be diagnosed with breast cancer this year alone, funding for research has the potential to improve the quality of life and survival odds for many millions of people. But despite increased attention and funding, the cure for this and other cancers has remained notoriously elusive. Viewing cancer through the lens of evolution helps explain why a cure seems to remain just out of reach and points the way toward new treatments.

Background
The present study was designed to test the hypothesis that inactivation of virtually any component within the pathway containing the BRCA1 and BRCA2 proteins would increase the risks for lymphomas and leukemias. In people who do not have BRCA1 or BRCA2 gene mutations, the encoded proteins prevent breast/ovarian cancer. However BRCA1 and BRCA2 proteins have multiple functions including participating in a pathway that mediates repair of DNA double strand breaks by error-free methods. Inactivation of BRCA1, BRCA2 or any other critical protein within this "BRCA pathway" due to a gene mutation should inactivate this error-free repair process. DNA fragments produced by double strand breaks are then left to non-specific processes that rejoin them without regard for preserving normal gene regulation or function, so rearrangements of DNA segments are more likely. These kinds of rearrangements are typically associated with some lymphomas and leukemias.

Methods
Literature searches produced about 2500 epidemiology and basic science articles related to the BRCA pathway. These articles were reviewed and copied to a database to facilitate access. Meta-analyses of statistical information compared risks for hematologic cancers vs. mutations for the components in a model pathway containing BRCA1/2 gene products.

Results
Deleterious mutations of genes encoding proteins virtually anywhere within the BRCA pathway increased risks up to nearly 2000 fold for certain leukemias and lymphomas. Cancers with large increases in risk included mantle cell lymphoma, acute myeloid leukemia, acute lymphocytic leukemia, chronic lymphocytic leukemia, and prolymphocytic leukemia. Mantle cell lymphoma is defined by a characteristic rearrangement of DNA fragments interchanged between chromosomes 11 and 14. DNA translocations or rearrangements also occur in significant percentages of the other cancers.

Conclusion
An important function of the BRCA pathway is to prevent a subgroup of human leukemias and lymphomas that may involve non-random, characteristic gene rearrangements. Here, the genetic defect in BRCA pathway deficiencies is a chromosomal misrepair syndrome that may facilitate this subgroup of somatic cancers. Inactivation of a single gene within the pathway can increase risks for multiple cancers and inactivation of a different gene in the same pathway may have similar effects. The results presented here may have clinical implications for surveillance and therapy.

This course illustrates how knowledge and principles of biology, biochemistry, and engineering are integrated to create new products for societal benefit. It uses a case study format to examine recently developed products of pharmaceutical and biotechnology industries: how a product evolves from initial idea, through patents, testing, evaluation, production, and marketing. Emphasizes scientific and engineering principles; the responsibility scientists, engineers, and business executives have for the consequences of their technology; and instruction and practice in written and oral communication. The topic focus of this class will vary from year to year. This version looks at inflammation underlying many diseases, specifically its role in cancer, diabetes, and cardiovascular disease.

This 13-minute video lecture provides an introduction to what cancer is and how it is the by-product of broken DNA replication. [Biology playlist: Lesson 13 of 71].

In this video segment, adapted from NOVA, Dr. Judah Folkman uses the scientific method to discover how cancer cells induce the formation of new blood vessels, which in turn nourish those cancer cells.

This course will cover the origins of cancer and the genetic and cellular basis for cancer. It will examine the factors that have been implicated in triggering cancers; the intercellular interactions involved in cancer proliferation; current treatments for cancer and how these are designed; and future research and treatment directions for cancer therapy. Upon successful completion of this course, the student will be able to: explain how the perception of cancer and theories of its causes have changed throughout history because of important discoveries made by scientists, researchers, and physicians; summarize the importance of understanding cell biology in the study of cancer, its causes, it progression, and its treatment; outline the transcription and translation processes used to convert DNA into proteins and what changes occur that convert proto-oncogenes into oncogenes and lead to unchecked cell growth and cancer; compare and contrast the mechanisms by which activation of oncogenes, loss of tumor suppressors, loss of cell cycle checkpoints, and development of faulty DNA repair lead to cancer; describe the various cancer prevention mechanisms including risk assessment, screening, and lifestyle and environmental modification; list the past, current, and future cancer treatments and the mechanism by which these target cancer causing cells. (Biology 404)

The second cancer lecture for the Computer-Aided Discovery Methods course taught at Baylor College of Medicine. This lecture covers regulation of gene expression in cancer, growth factor signaling, growth inhibition signaling and apoptosis.

The second cancer lecture for the Computer-Aided Discovery Methods course taught at Baylor College of Medicine. This lecture covers regulation of gene expression in cancer, growth factor signaling, growth inhibition signaling and apoptosis.

The third cancer lecture for the Computer-Aided Discovery Methods course taught at Baylor College of Medicine. This lecture covers cancer stem cells, differentiation, metastasis, and cancer types by organ of origin.

The third cancer lecture for the Computer-Aided Discovery Methods course taught at Baylor College of Medicine. This lecture covers cancer stem cells, differentiation, metastasis, and cancer types by organ of origin.

Seminar covering topics of current interest in biology. Includes reading and analysis of research papers and student presentations. Contact Biology Education Office for topics. This course is one of many Advanced Undergraduate Seminars offered by the Biology Department at MIT. These seminars are tailored for students with an interest in using primary research literature to discuss and learn about current biological research in a highly interactive setting. In 1971, President Nixon declared the "War on Cancer," but after three decades the war is still raging. How much progress have we made toward winning the war and what are we doing to improve the fight? Understanding the molecular and cellular events involved in tumor formation, progression, and metastasis is crucial to the development of innovative therapy for cancer patients. Insights into these processes have been gleaned through basic research using biochemical, molecular, and genetic analyses in yeast, C. elegans, mice, and cell culture models. We will explore the laboratory tools and techniques used to perform cancer research, major discoveries in cancer biology, and the medical implications of these breakthroughs. A focus of the class will be critical analysis of the primary literature to foster understanding of the strengths and limitations of various approaches to cancer research. Special attention will be made to the clinical implications of cancer research performed in model organisms and the prospects for ending the battle with this devastating disease.

Prof. Ching Lau lectures on cancer biology: Cancer as a genetic disease; Mutations and repair; Environmental interactions and cancer. Part of the Computer Aided Discovery Methods course offered at Baylor College of Medicine

Bioengineers at Rice have developed low-cost imaging systems to improve the early detection of cancer.

This curriculum supplement brings into the classroom new information about some of the exciting medical discoveries being made at the National Institutes of Health (NIH) and their effects on public health. This set is being distributed to teachers around the country free of charge by the NIH to improve science literacy and to foster student interest in science. The first three supplements in the series are designed for use in senior high school science classrooms: Emerging and Re-emerging Infectious Diseases (with expertise from the National Institute of Allergy and Infectious Diseases); Cell Biology and Cancer (with expertise from the National Cancer Institute); Human Genetic Variation (with expertise from the National Human Genome Research Institute).

This patient education program explains how chemotherapy works as a treatment for cancer and its common side effects. This is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.

This patient education program explains how chemotherapy works as a treatment for cancer and its common side effects. This is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.