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Re: Interesting News Articles About Cancer

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Re: Interesting News Articles About Cancer

Photoacoustic device identifies cancer before tumors form

A new technique for melanoma detection, proposed by researchers at the University of Missouri, uses photoacoustics (laser-induced ultrasound) to find cancer cells before they form into tumors. Testing could cost just a few hundred dollars. The current method of detection, by comparison, requires waiting for tumors to form and can cost thousands of dollars.

At first, the technique is being used on melanoma but researchers expect to find ways to use it against other types of cancer too.

The two-minute video interview with a lead researcher provides much more useful information than the text. Both are at this link:

http://news.cnet.com/8301-27083_3-57353451-24...latest-news&tag=title
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Re: Interesting News Articles About Cancer

Researchers at the Translational Genomics Research Institute (TGen) and its collaborators have identified a rare, inherited mutation linked to a significantly higher risk of prostate cancer.
A study led by Johns Hopkins University School of Medicine and the University of Michigan Health System published today in the New England Journal of Medicine follows a 20-year quest to find a genetic driver for an aggressive type of prostate cancer that strikes men at younger ages and runs in families. Researchers found that men who inherit this mutation have a 10-20 fold higher risk of developing prostate cancer.
“The results of this study represent an amazing advancement in our understanding of inherited prostate cancer. It is our hope that this information will provide new opportunities for diagnosis, prevention, and treatment of prostate cancer in patients with a strong family history of the disease,” said Dr. John Carpten, Ph.D., Director of TGen’s Integrated Cancer Genomics Division and a co-investigator on the study.
Led by Dr. Carpten, TGen sequenced the DNA of more than 200 genes on a human chromosome region known as 17q21-22.
Dr. Kathleen A. Cooney, M.D., professor of internal medicine and urology at the U-M Medical School, and one of the study’s two senior authors, worked with Dr. Ethan Lange, Ph.D., of the University of North Carolina on the U-M Prostate Cancer Genetics Project and were the first to identify 17q21-22 as a region of interest.
While accounting for only a small fraction of all prostate cancer cases, the most recent discovery may provide important clues about how this common cancer develops and help to identify a subset of men who might benefit from additional or earlier screening. This year, an estimated 240,000 men in the U.S. will be diagnosed with prostate cancer.
“This is the first major genetic variant associated with inherited prostate cancer,” Cooney said.
“It’s what we’ve been looking for over the past 20 years,” adds Dr. William B. Isaacs, Ph.D., professor of urology and oncology at the Johns Hopkins University School of Medicine, the study’s other senior author. “It’s long been clear that prostate cancer can run in families, but pinpointing the underlying genetic basis has been challenging and previous studies have provided inconsistent results.”
Researchers started with samples from the youngest patients with prostate cancer in 94 families who had participated in studies at U-M and Johns Hopkins. Each of those families had multiple cases of the disease among close relatives, such as between fathers and sons or among brothers.
Members of four different families were found to have the same mutation in the HOXB13 gene, which plays an important role in the development of the prostate during the fetal stage and its function later in life. The mutation was carried by all 18 men with prostate cancer in these four families – which was all the men with the disease from whom DNA was available.
The researchers collaborated with Jianfeng Xu, Ph.D., and Lilly Zheng, Ph.D., at Wake Forest University to look for the same HOXB13 gene mutation among 5,100 men who had been treated for prostate cancer at either Johns Hopkins or U-M. The mutation was found in 1.4 percent, or 72, of the men. It turned out that those men were much more likely to have at least one first-degree relative, a father or brother, who also had been diagnosed. The researchers also looked for the mutation in a control group of 1,400 men without prostate cancer, and only one of those men carried the mutation. In addition, the researchers studied men who were specifically enrolled in studies of early-onset or familial prostate cancer.
“We found that the mutation was significantly more common in men with a family history and early diagnosis compared with men diagnosed later, after age 55, without a family history. The difference was 3.1 percent versus 0.62 percent,” Cooney says.
“We had never seen anything like this before. It all came together to suggest that this single change may account for at least a portion of the hereditary form of the disease,” says study co-author Dr. Patrick Walsh, M.D., professor of urology at Johns Hopkins, who is one of the pioneers in prostate cancer treatment. In the 1980s, Walsh was one of the first to publish a study showing that the risk of prostate cancer was higher among men with close relatives who also had the disease.
The researchers say with further study, it may be possible one day to have genetic test for inherited prostate cancer in much the same way that tests are available to look for BRCA1 and BRCA 2 mutations that greatly increase a woman’s chance of developing breast and/or ovarian cancer.
“We need to continue studying this variant and look at larger groups of men. Our next step will be to develop a mouse model with this mutation to see if it causes prostate cancer,” Isaacs says. “Future DNA sequencing may also identify additional rare variants that contribute to prostate cancer risk in families.”
This particular mutation was found in families of European descent, while two different mutations on the HOXB13 gene were identified in families of African descent. African American men are more likely to be diagnosed with prostate cancer at younger ages and have a more aggressive form of the disease.
Cooney says patients with questions about prostate cancer screening, particularly if the disease runs in their families, are encouraged to speak with their doctor.

# # #

Additional authors:
Anna M. Ray, M.S., Kimberly A. Zuhlke, B.A., James E. Montie, M.D., of U-M
Charles M. Ewing, M.S., Kathleen E. Wiley, M.S., Sarah D. Isaacs, M.S., Dorhyun Johng, B.A., Guifang Yan, B.S., Marta Gielzak, B.A., Alan W. Partin, M.D., Ph.D., of Johns Hopkins.
Yunfei Wang, M.S., of the University of North Carolina.
Chris Bizon, Ph.D., of Renaissance Computing Institute, Chapel Hill, N.C.
Christiane M. Robbins, M.S., Waibhav D. Tembe, Ph.D., Vijayalakshmi Shanmugam, Ph.D., Tyler Izatt, M.S., Shripad Sinari, M.S., David W. Craig, Ph.D., of Translational Genomics Research Institute (TGen).
Funding and acknowledgements: William Gerrard, Mario Duhon, John and Jennifer Chalsty, P. Kevin Jaffe and Patrick C. Walsh Cancer research fund. The authors also thank the Lung GO Sequencing Project, WHI Sequencing Project, Broad GO Sequencing Project, Seattle GO Sequencing Project and Heart GO Sequencing Project. The Network and Computing Systems department of TGen, with support from National Institutes of Health grants, facilitated the use of supercomputing resources.
Citation: “Germline Mutations in HOXB13 and Prostate Cancer Risk,” New England Journal of Medicine, TK-DATE.
For more about this study, see the Johns Hopkins news release at: http://www.hopkinsmedicine.org/news/media/releases
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Michael2901
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/articles/235446.php

"Article Date: 04 Oct 2011

HPV Linked Oropharyngeal Cancer Rates Rise Dramatically

In the 1980s just over 16% of patients with oropharyngeal cancers tested positive to HPV, compared to over 70% during the last decade, researchers reported in the Journal of Clinical Oncology. The authors add that if the rise in incidence continues at its present pace, the incidence of oropharyngeal cancers will overtake that of cervical cancer.

HPV stands for human papillomavirus

Oropharyngeal cancer is cancer which develops in the tissue of the oropharynx, the middle part of the throat, including the base of the tongue, tonsils, the soft palate, and the walls of the pharynx..."
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Michael2901
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/articles/235938.php

"Article Date: 13 Oct 2011

Ginger Root May Protect From Colon Cancer

A select group of 30 volunteer patients were administered with a Ginger Root Supplement or placebo and after a month showed a promising decrease in many of the inflammation markers in the colon.

Inflammation of the colon is an indicator believed to be a precursor to colon cancer. Thus reducing inflammation is an important step in colon cancer prevention.

Suzanna M. Zick, N.D., M.P.H., a research assistant professor at the University of Michigan Medical School and colleagues, enrolled 30 patients and randomly assigned them to two grams of ginger root supplements per day or placebo for 28 days.

Zick commented that :

"We need to apply the same rigor to the sorts of questions about the effect of ginger root that we apply to other clinical trial research. Interest in this is only going to increase as people look for ways to prevent cancer that are nontoxic, and improve their quality of life in a cost-effective way."

The study published in Cancer Prevention Research, a journal of the American Association for Cancer Research, measured standard levels of colon inflammation and saw real reductions in most of the markers, and others trending towards significant reductions.

The team says that Phase II trials are now required to validate the initial results. It's interesting to see a herb that is not under patent, being treated with the same methodical approach used to test pharmaceutical drugs in which there is obviously a far greater vested interest in studying and proving their validity. Many doctors complain that natural medicine is unproven "witchery" but when you think into it, it's only because there is no real financial interest or profit incentive to spending thousands testing a product which is common property..."
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Michael2901
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/releases/236186.php

"Article Date: 19 Oct 2011

Can Taking Calcium With Other Minerals Help Prevent Bowel Cancer?

Bowel cancer is one of the most common forms of cancer in developed countries but occurs much less frequently in the developing world. A high fat diet, particularly high in saturated fat, can increase a person's risk of developing bowel cancer. In addition to the high content of saturated fat, the 'typical' Western diet contains only low levels of calcium and other minerals.

Using his £157,973 grant from the Association for International Cancer Research (AICR) which has its headquarters in St Andrews, Professor James Varani and his team at the University of Michigan, in the USA, are investigating whether calcium in conjunction with other trace minerals might be more effective in preventing bowel cancer than calcium alone..."
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/releases/236229.php

"Article Date: 20 Oct 2011

Fighting Cancer With Oncolytic Viruses

Oncolytic virology uses live viruses to sense the genetic difference between a tumor and normal cell. Once the virus finds a tumor cell, it replicates inside that cell, kills it and then spreads to adjacent tumor cells to seed a therapeutic "chain reaction". As reported in Cancer Cell, Dr. David Stojdl, a scientist from the Children's Hospital of Eastern Ontario Research Institute at the University of Ottawa has found a way to trick resistant cancer cells into committing suicide following oncolytic virus therapy..."
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Michael2901
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/releases/236283.php

"Article Date: 21 Oct 2011

Turning Up The Heat To Kill Cancer Cells: The 'Lance Armstrong Effect'

The "Lance Armstrong effect" could become a powerful new weapon to fight cancer cells that develop resistance to chemotherapy, radiation and other treatments, scientists say in a report in the ACS journal Molecular Pharmaceutics.

Robert Getzenberg and Donald Coffey explain that many advances have occurred in the 40 years since President Nixon declared a "War on Cancer" on December 23, 1971. However, cancer remains a leading cause of death worldwide, claiming almost 8 million lives annually. Patients with some forms of cancer respond well to treatment, while others have disease that becomes resistant to every known treatment. Patients with testicular cancer have a high survival rate - more than 70 percent - even if the cancer metastasizes, or spreads. For example, Lance Armstrong, the famous cyclist, beat metastatic testicular cancer that spread to his lungs and brain, and then went on to win the Tour de France a record seven consecutive times. But patients with pancreatic cancer have only a 25 percent survival rate in the first year and a 6 percent survival rate by the fifth year after diagnosis. Why is this?

Getzenberg and Coffey realized that the microenvironment of testicular cancer cells was a little different. Testicles are usually several degrees cooler than the rest of the body, owing to their position outside the body. When cancer cells from the testicles spread to other organs, such as the lungs or brain, they encounter a warmer environment. The researchers propose that this warmth shocks the tumor cells, making them more susceptible to conventional cancer therapies, which leads to a higher survival rate among testicular cancer patients. This is the so-called "Lance Armstrong effect." The researchers describe tests now underway on nanoparticle therapies to specifically heat other types of tumors above their normal temperatures to see whether this effect holds true for non-testicular cancers."
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/releases/236358.php

"Article Date: 21 Oct 2011

Starving Non-Malignant Tumors


The condition tuberous sclerosis, due to mutation in one of two tumor suppressor genes, TSC1 or TSC2, causes the growth of non-malignant tumors throughout the body and skin. These tumors can be unsightly and cause serious damage to organs. Growth of tumors in the brain may cause seizures and in the kidney, liver or heart, tumors can disrupt normal function, to the extent of causing the organ to fail. New research published in BioMed Central's open access journal Cell and Bioscience shows that the growth of glucose-dependent TSC-related tumors can be restricted by 2-deoxyglucose, which blocks glucose metabolism, but not by restricting dietary carbohydrates..."
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Re: Interesting News Articles About Cancer

http://www.medicalnewstoday.com/articles/236490.php

"Article Date: 25 Oct 2011

Coffee Lowers Risk Of Skin Cancer Basal Cell Carcinoma

A prospective study found that the more coffee an adult drinks, the lower their risk seems to be for developing basal cell carcinoma, a common type of skin cancer. Researchers from Brigham and Women's Hospital and Harvard Medical School presented their findings at the 10th AACR International Conference on Frontiers in Cancer Prevention Research, explaining that there is an inverse association between coffee consumption and basal cell carcinoma risk.

Basal cell carcinoma, also known as BCC is the most common form of skin cancer. In this disease, the cancer looks like the basal cells of the outer layer of skin (epidermis). They usually start off as a "sore that will not heal". The sore, often a bleeding or scabbing one, gets better and then comes back and starts bleeding. Most commonly, BCC emerge on the neck and face; the parts of the body most exposed to the sun. However, a fair proportion also appear on the leg, scalp, or abdomen. In the majority of cases they are locally invasive, they do not metastasize (spread to other parts of the body).

Co-author, Fengju Song, Ph.D., said:

"Given the nearly 1 million new cases of BCC diagnosed each year in the United States, daily dietary factors with even small protective effects may have great public health impact. Our study indicates that coffee consumption may be an important option to help prevent BCC."
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