Lung surgery

Nitrogen left upper lobe - lung and lymph node dissection in stage T3N2M0 (adenocarcinoma, and the cavity of the destruction of tumor size = 8.0 cm)

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Management of Health Risks from Environment and Food: Policy and Politics of Health Risk Management in Five Countries -- Asbestos and BSE (Alliance for Global Sustainability Bookseries)

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This book examines the policy and politics of two health risks, which have recently become prominent social issues in many countries. One is the issue of asbestos as an environmental risk to humans, and another is that of bovine spongiform encephalitis (BSE), or mad cow disease as an animal disease, and of its variant Creutzfeldt-Jakob disease (CJD) as a human food risk. Employing a set of analytical frameworks in political science, each case study explores how the issues emerged, agendas got set, alternatives were chosen, and policies were implemented. Through the analysis, it is examined how safety and public reassurance were pursued in the countries studied (Japan, the UK, France the USA, and Korea). Exploration of the successes and failures in their efforts discloses the key elements to successful health risk management.

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How Does Ginseng Kill Cancer Cells?

Ginseng, a herbal medicine used extensively for centuries in oriental medicine including Chinese, Korean and Japanese as a general tonic to promote longevity can be effective in combating cancer, diabetes, stress, fatigues and oxidants. These effects of ginseng are mainly attributed to a group of compounds called ginsenosides, which recent studies indicate that they might act in a similar way as steroid hormones. A review of recent studies on ginseng was done by researchers from the UK, Hong Kong and China in a report published on the Chinese Medicine Journal. The report has unveiled the secret behind this longevity-enhancing herb.

What is ginseng? Ginseng is a deciduous perennial plant that belongs to the Araliaceae family. Currently, twelve species have been identified in the genus Panax. Among them, Panax ginseng C. A. Meyer (Araliaceae), cultivated in China, Korea, Japan, Russia, and the US, P. quinquefolium L (American ginseng), grown in southern Canada and the US and P. notoginseng, cultivated in Yunnan and Guangxi provinces in China, represent the three most extensively investigated species.

In modern times, ginseng is not only used as a therapeutic by traditional medical practitioners but is also as health supplements readily available in the commercial market.

"Recently, it has been found that ginsenosides can act as functional ligands to activate different steroid hormone receptors. Through such mechanisms, ginseng can exert its effects on the human body by acting in a similar way as the steroid hormones," the researchers write.

What are the known effects of ginseng? The pharmacological and therapeutic effects of ginseng have been demonstrated to affect the central nervous system (CNS), cardiovascular system, endocrine secretion, immune function, metabolism, biomodulating action, anti-stress, and anti-aging. Recently, there have been controversies concerning the usefulness of ginseng in cancer therapy.

Most studies claimed that the pharmacological effects of ginseng are attributed to its bioactive constituents such as ginsenosides, saponins, phytosterols, peptides, polysaccharides, fatty acids, polyacetylenes, vitamins and minerals.

So how does ginseng make it? How does it combat cancers?

According to the Chinese Medicine Journal's report, the anti-tumour effects of ginsenosides include its ability to induce cell death (such as apoptosis and necrosis), and having effects of anti-proliferation, anti-invasion and metastasis, and anti-angiogenesis.

Inducing cell death

Several compounds found in ginsenosides have been shown to induce apoptosis in prostate cancer cells, ovarian cancer cells, neuroblastoma cells and lung adenocarcinoma cells. The induction of tumour cell death by ginsenosides may be one of the mechanisms in the elimination of tumour cells, the writers say.

Anti-proliferation

Ginsenosides also have preventative effects by inhibiting the cell cycle progression. They have been shown to arrest the growth of human tumour cell lines in lung tumour cells, prostate carcinoma cells, leukuemia cells, and hepatoma (liver cancer) cells.

Anti-invasion and anti-metastasis

Cancer metastasis is a complex process involving angiogenesis and cell-cell interactions.

What is cancer metastasis? Metastasis is the spread of cancer from its primary site to other places in the body. Cancer cells can break away from a primary tumour, penetrate into lymphatic and blood vessels, circulate through the bloodstream, and grow in a distant focus (metastasize) in normal tissues elsewhere in the body.

Tumours are classified as either benign or malignant. Malignant tumours can spread by invasion and metastasis whilst benign tumours cannot (and only grow locally). Metastatic tumours are very common in the late stages of cancer. The spread of metastases may occur via the blood or the lymphatics or through both routes. The most common places for the metastases to occur are the adrenals, liver, brain and the bones. There is also a propensity for certain tumours to seed in particular organs.

Scientists recently demonstrated that the invasiveness of some endometrial cancer cells (including those of the uterus) was inhibited by treating them with a certain types of ginsenosides. The inhibitory effect is due to suppression of MMP-2 expression.

What are matrix metalloproteinases (MMPs)? MMPs are capable of degrading all kinds of extracellular matrix proteins. MMPs are also thought to play a major role on cell behaviours such as cell proliferation, migration (adhesion/dispersion), differentiation, angiogenesis, apoptosis and host defense.

The anti-invasive effects of several ginsenosides include the abilities to significantly inhibit in vitro invasion of hepatoma cells, melanoma cells, human lung carcinoma and pancreatic cancer cells. Ginsensodies have also been shown to inhibit lung metastasis, reduce the weight of tumours in lung, breast, gastric and melanoma cancers.

Anti-angiogenesis effects

What is angiogenesis? Angiogenesis is a physiological process involving the growth of new blood vessels from pre-existing vessels. Excessive angiogenesis has been defined as a prominent pathological feature of many diseases such as tumour, rheumatoid arthritis, atherosclerosis, psoriasis and diabetic retinopathy ("diabetic eyes").

According to the present report, numerous recent studies have demonstrated several ginsenosides exert an anti-angiogenic action in different animal models when administered alone or in combination with other conventional chemicals, such as human breast infiltrating duct carcinoma, ovarian carcinoma cells, melanoma cells and colon carcinoma. These data indicate that one of the mechanisms of anti-metastatic effect of ginsenosides is probably related to suppression of tumour-induced angiogenesis.

A new class of anti-tumour drugs: ginsenosides Rg3 and Rh2?

The researchers say that both gensensides Rg3 and its metabolite form Rh2 have emerged in Mainland China and Taiwan as anti-cancer drugs in the form of capsules (e.g. 'Rg3 Shenyi Jiaonang' and 'GOOD LIFE ginsenoside Rh2 capsule'). Rg3 Shenyi Jiaonang suppresses tumour angiogenesis and prevents adhesion, invasion and metastasis of tumour cells. Rh2 as an adjuvant agent was also tested in the nude mouse model with human ovarian cancer cells transplanted. In the presence of Rh2, cisplatin could significantly inhibit tumour growth in vivo and prolong survival time. Neither Rh2 nor cisplatin alone could inhibit tumour growth. It was shown that chemotherapy supplemented with Rh2 is 60% more effective than chemotherapy alone. It could also mitigate the adverse effects of hair loss, anemia, nausea, vomit and poor appetite following chemotherapy or radiotherapy.

Both Rg3 and Rh2 are extracted from red ginseng which is processed by steaming and drying. During the process, the malonyl group at the C-6 is released and the glycosyl moiety at C-20 is partially detached to generate Rh1, Rh2 and Rg3 through deglycosylation similar to the deglycosylated product, compound K generated from the metabolic transformation of ginsenoside Rb1 by intestinal bacteria. However, whether all of the ginsenosides generated by such post-treatment of white ginseng have similar anti-tumour effects are still not known.

[Chinese Medicine 2007, 2:6 doi:10.1186/1749-8546-2-6]

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ABC of Work Related Disorders (ABC Series)

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This comprehensive guide to the most common disorders is written specially for those in primary care who need to diagnose the condition from a wide variety of symptoms and be informed of first line management and when to refer

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Lake Effect: Two Sisters and a Town's Toxic Legacy

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Jun 03, 2010 11:38:44

On her deathbed, Sue asked her sister for one thing: to write about the connection between the industrial pollution in their hometown and the rare cancer that was killing her. Fulfilling that promise has been Nancy Nichols mission for more than a decade. Lake Effect is the story of her investigation. It reaches back to their childhood in Waukegan, Illinois, an industrial town on Lake Michigan once known for good factory jobs and great fishing. Now Waukegan is famous for its Superfund sites: as one resident put it, asbestos to the north, PCBs to the south. Drawing on her experience as a journalist, Nichols interviewed dozens of scientists, doctors, and environmentalists to determine if these pollutants could have played a role in her sister s death. While researching Sue's cancer, she discovered her own: a vicious though treatable form of pancreatic cancer. Doctors and even family urged her to forget causes and concentrate on cures, but Nichols knew that it was relentless questioning that had led to her diagnosis. And that it is questioning by government as well as individuals that could save other lives. Lake Effect challenges us to ask why. It is the fulfillment of a sister s promise. And it is a call to stop the pollution that is endangering the health of all our families.

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±1±: Best Buy This is a good book, but I think the author and his sister have a cancer story. Both of these, it is a direct result of the town they had grown up believing there was dumping of extremely toxic chemicals that right off Lake Michigan. Very Nancy (which, of course, I seem to be angry), but the way author should be. Her cancer was much discussion of how the other side'm very very biased is not all. I know that industry dumps large number of veryChemicals that affect the world and I feel like the argument was not enough to her briefly. Please I do not think people really read this book, my opinion is purely because a lot of things to remember in this way they realize that ... on Sale!

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