Ginger Induce Cell Death in Ovarian Carcinoma:
Lab experiments presented at the 97th Annual Meeting of the American Association for Cancer, by Dr Rebecca Lui and her colleagues from the University of Michigan, showed that gingerols, the active phytonutrients in ginger, kill ovarian cancer cells by inducing apoptosis (programmed cell death) and autophagocytosis (self-digestion).
Ginger extracts have been shown to have both antioxidant, anti-inflammatory and anti-tumor effects on cells. To investigate the latter, Dr Liu examined the effect of a whole ginger extract containing 5% gingerol on a number of different ovarian cancer cell lines.
Exposure to the ginger extract caused cell death in all the ovarian cancer lines studied.
A pro-inflammatory state is thought to be an important contributing factor in the development of ovarian cancer. In the presence of ginger, a number of key indicators of inflammation (vascular endothelial growth factor, interleukin-8 and prostaglandin E2) were also decreased in the ovarian cancer cells. Conventional chemotherapeutic agents also suppress these inflammatory markers, but may cause cancer cells to become resistant to the action of the drugs. Liu and her colleagues believe that ginger may be of special benefit for ovarian cancer patients because cancer cells exposed to ginger do not become resistant to its cancer-destroying effects.
In the case of ovarian cancer, an ounce of prevention-in the delicious form of liberal use of ginger-is an especially good idea. Ovarian cancer is often deadly since symptoms typically do not appear until late in the disease process, so by the time ovarian cancer is diagnosed, it has spread beyond the ovaries. More than 50% of women who develop ovarian cancer are diagnosed in the advanced stages of the disease.
This page describes some of the medicinal property of ginger. To go directly to the information about the anti-cancer effect of ginger, roll this page down to the color highlighted sections:
Ginger Extract in Traditional Medicine:
Known as Sheng Jiang in Chinese medicine, ginger (zingiber officinale), is been used since ancient times by Traditional Chinese Medicine (TCM) in the treatment of gastrointestinal disorders, and inflammatory and obstructive conditions. A clue to ginger's success in eliminating gastrointestinal distress is offered by recent double-blind studies, which have demonstrated that ginger is very effective in preventing the symptoms of motion sickness, especially seasickness. In fact, in one study, ginger was shown to be more effective than Dramamine, a standard drug for motion sickness. Ginger reduces all symptoms associated with motion sickness including dizziness, nausea, and vomiting.
Ginger has been shown to be effective in reducing the nausea and vomiting of pregnancy, even the most severe, hyperemesis gravidum which usually requires hospitalization. In a double-blind trial, ginger root brought about a significant reduction in both the severity of nausea and number of vomiting onset in 19 of 27 women in early pregnancy (less than 20 weeks). Unlike anti-nausea drugs, which can cause severe birth defects, ginger is extremely safe, and only a small dose is required. A review of six double-blind, randomized controlled trials with a total of 675 participants, published in the April 2005 issue of the journal, Obstetrics and Gynecology, has confirmed that ginger is effective in relieving the severity of nausea and vomiting during pregnvancy. The review also confirmed the absence of significant side effects or adverse effects on pregnancy outcomes.
Ginger contains compounds called gingerols which are potent anti-inflammatory. These substances are believed to explain why so many people suffering from osteoarthritis or rheumatoid arthritis experience reductions in their pain levels and improvements in their mobility when they consume ginger regularly. In two clinical studies involving patients who responded to conventional drugs and those who didn't, physicians found that 75% of arthritis patients and 100% of patients with muscular discomfort experienced relief of pain and or inflammation..
A recent issue of Osteoarthritis Cartilage published a study suggesting that patients suffering from knee pain due to degenerative osteoarthritis may benefit from regular intake of ginger. In this twelve month study, 29 patients with painful arthritis in the knee (6 men and 23 women ranging in age from 42-85 years) participated in a placebo-controlled, double-blind, crossover study. Patients switched from placebo to ginger or visa versa after 3 months. After six months, the double-blind code was broken and twenty of the patients who wished to continue were followed for an additional six months.
By the end of the first six month period, those given ginger were experiencing significantly less pain on motion and handicap than those given placebo. Pain on motion decreased from a score of 76.14 at baseline to 41.00, while handicap decreased from 73.47 to 46.08. In contrast, those who were switched from ginger to placebo experienced an increase in pain on motion (up to 82.10) and handicap (up to 80.80) from baseline. In the final phase of the study when all patients were getting ginger, pain remained low in those already taking ginger in phase 2, and decreased again in the group that had been on placebo.
The subjective experiences of pain, the swelling in their knees, and objective measurement of inflammation, lessen significantly in those treated with ginger. The mean target knee circumference in those taking ginger dropped from 43.25cm when the study began to 39.36cm by the 12th week. When this group was switched to placebo in the second phase of the study, their knee circumferences increased again, while those who had been on placebo but were now switched to ginger experienced a decrease in knee circumference. In the final phase, when both groups were given ginger, mean knee circumference continued to drop, reaching lows of 38.78 and 36.38 in the two groups.
Two other recent studies provide possible clue as to how ginger asserts its anti-inflammatory effect.
A study published in the November 2003 issue of Life Sciences suggests that at least one reason for ginger's beneficial effects is the free radical protection afforded by one of its active phenolic constituents, 6-gingerol. In this in vitro study, 6-gingerol was shown to significantly inhibit the production of nitric oxide, a highly reactive nitrogen molecule that quickly forms a very damaging free radical called peroxynitrite. Another study appearing in the November 2003 issue of Radiation Research found that in mice, five days treatment with ginger (10 mg per kilogram of body weight) prior to exposure to radiation not only prevented an increase in free radical damage to lipids (fats found in numerous bodily components from cell membranes to cholesterol), but also greatly lessened depletion of the animals' stores of glutathione, one of the body's most important internally produced antioxidants.
A study published in the February 2005 issue of the Journal of Alternative and Complementary Medicine reveals further light on the mechanisms of action that underlie ginger's anti-inflammatory effectiveness. In this research, ginger was shown to suppress the pro-inflammatory compounds (cytokines and chemokines) produced by synoviocytes (cells comprising the synovial lining of the joints), chrondrocytes (cells comprising joint cartilage) and leukocytes (immune cells).
Gingerols, the main active components in ginger and the ones responsible for its distinctive flavor, may also inhibit the growth of human colorectal cancer cells, suggests research presented at the Frontiers in Cancer Prevention Research, a major meeting of cancer experts that took place in Phoenix, AZ, October 26-30, 2003.
In this study, researchers from the University of Minnesota's Hormel Institute fed mice specially bred to lack an immune system a half milligram of gingerol three times a week before and after injecting human colorectal cancer cells into their flanks. Control mice received no gingerol.
Tumors first appeared 15 days after the mice were injected, but only 4 tumors were found in the group of gingerol-treated mice compared to 13 in the control mice, plus the tumors in the gingerol group were smaller on average. Even by day 38, one mouse in the gingerol group still had no measurable tumors. By day 49, all the control mice had been euthanized since their tumors had grown to one cubic centimeter (0.06 cubic inch), while tumors in 12 of the gingerol treated mice still averaged 0.5 cubic centimeter-half the maximum tumor size allowed before euthanization.
Research associate professor Ann Bode noted, "These results strongly suggest that ginger compounds may be effective chemopreventive and/or chemotherapeutic agents for colorectal carcinomas."
In this first round of experiments, mice were fed ginger before and after tumor cells were injected. In the next round, researchers will feed the mice ginger only after their tumors have grown to a certain size. This will enable them to look at the question of whether a patient could eat ginger to slow the metastasis of a nonoperable tumor. Are they optimistic? The actions of the University of Minnesota strongly suggest they are. The University has already applied for a patent on the use of -gingerol as an anti-cancer agent and has licensed the technology to Pediatric Pharmaceuticals (Iselin, N.J.).
Lab experiments presented at the 97th Annual Meeting of the American Association for Cancer, by Dr Rebecca Lui and her colleagues from the University of Michigan, showed that gingerols, the active phytonutrients in ginger, kill ovarian cancer cells by inducing apoptosis (programmed cell death) and autophagocytosis (self-digestion).
Ginger extracts have been shown to have both antioxidant, anti-inflammatory and anti-tumor effects on cells. To investigate the latter, Dr Liu examined the effect of a whole ginger extract containing 5% gingerol on a number of different ovarian cancer cell lines.
Exposure to the ginger extract caused cell death in all the ovarian cancer lines studied.
A pro-inflammatory state is thought to be an important contributing factor in the development of ovarian cancer. In the presence of ginger, a number of key indicators of inflammation (vascular endothelial growth factor, interleukin-8 and prostaglandin E2) were also decreased in the ovarian cancer cells. Conventional chemotherapeutic agents also suppress these inflammatory markers, but may cause cancer cells to become resistant to the action of the drugs. Liu and her colleagues believe that ginger may be of special benefit for ovarian cancer patients because cancer cells exposed to ginger do not become resistant to its cancer-destroying effects.
In the case of ovarian cancer, an ounce of prevention-in the delicious form of liberal use of ginger-is an especially good idea. Ovarian cancer is often deadly since symptoms typically do not appear until late in the disease process, so by the time ovarian cancer is diagnosed, it has spread beyond the ovaries. More than 50% of women who develop ovarian cancer are diagnosed in the advanced stages of the disease.
Ginger can not only be warming on a cold day, but can help promote healthy sweating, which is often helpful during colds and flus. A good sweat may do a lot more than simply assist detoxification. German researchers have recently found that sweat contains a potent germ-fighting agent that may help fight off infections. Investigators have isolated the gene responsible for the compound and the protein it produces, which they have named dermicidin. Dermicidin is manufactured in the body's sweat glands, secreted into the sweat, and transported to the skin's surface where it provides protection against invading microorganisms, including bacteria such as E. coli and Staphylococcus aureus (a common cause of skin infections), and fungi, including Candida albicans.
Ginger is so concentrated with active substances, you don't have to use very much to receive its beneficial effects. For nausea, ginger tea made by steeping one or two 1/2-inch slices (one 1/2-inch slice equals 2/3 of an ounce) of fresh ginger in a cup of hot water will likely be all you need to settle your stomach. For arthritis, some people have found relief consuming as little as a 1/4-inch slice of fresh ginger cooked in food, although in the studies noted above, patients who consumed more ginger reported quicker and better relief.
The spice ginger is the underground rhizome of the ginger plant, known as Sheng Jiang in Chinese medicine. The plant is also known botanically as Zingiber officinale.
Regreso
