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Antioxidants blog Cancer Respiratory health

GREEN COFFEE BEANS: PROMISING ANTIOXIDANT FOR PREVENTING SIDE EFFECTS OF CHEMOTHERAPY

Chemotherapy is used for managing acute or chronic leukaemia, malignant lymphomas or other tumors in the intestine, lung, breast and other organs. The use of chemotherapeutic substances is common when combating tumor cells and pathogens such as viruses and fungal infections.

Different medications are used, depending on the type of illness and condition of the patient. Cytostatic agents which are frequently used in chemotherapy and which cause severe side effects are for instance the anthracycline.  1

The use of drugs (whether chemotherapy, hormonal therapy or targeted therapy) constitutes systemic therapy for cancer in which they are introduced into the blood stream and address cancer at any anatomic location in the body. Systemic therapy is often used in conjunction with other modalities that constitute local therapy (i.e. treatments whose efficacy is confined to the anatomic area where they are applied) for cancer such as radiation therapy, surgery and/or hyperthermia therapy.

SIDE EFFECTS OF CHEMOTHERAPY

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The occurrence of acute or long-term side effects which occur later in connection with the chemotherapy, include the side effects to: 3

  • Skin
  • Mucous membranes
  • Increased sensitivity to herpes viruses or fungal infections
  • Alopecia – Temporary partial or total loss of hair
  • Psychological damage, particularly in women

Side effects to skin include

  • Dry or scaly skin
  • Itchy skin swellings
  • Red patches
  • Formation of blisters
  • Skin lesions with low-level mechanical impacts
  • Allergies
  • Skin discoloration along the infusion veins
  • Pigment spots
  • Hand and foot syndrome (PPE)

HOW CHEMOTHERAPY PRODUCES SIDE EFFECTS? 4

It was found that chemotherapeutic substances which are administered systemically or intravenously quickly penetrate from inside-out onto the skin via sweat and are distributed homogeneously over the skin surface. Then they penetrate the skin from outside in the same manner as the topically applied substances. The highest concentration of chemotherapeutic substances on the skin is observed in places where the highest sweat glands occur, e.g. on the forehead, the axilia and the balls of the hands & feet. The majority of skin irritations also occur here.

Chemotherapeutic substances frequently accumulate in the hair follicles. They are in part expelled there together with the fat from the sebaceous glands and this contributes to rapid loss of hair during a chemotherapeutic treatment.

Chemotherapy also increases the free radical activity inside body, which, in turn, can overcome the body’s natural antioxidant defenses causing diseased state in the body.

HOW CAN WE GET RID FROM THIS PROBLEM OF SIDE EFFECTS FROM CHEMOTHERAPY? 

5It has been found by the scientists that the occurrence of side effects from chemotherapeutic substances on the skin or on the hair can be prevented or significantly reduced when antioxidant agents or such substances which are known as radical scavengers are used during or subsequent to chemotherapy together with microparticles. Obviously, to ensure an effective protection or treatment it is necessary to neutralize the free radicals on the skin or scalp surface before they penetrate the skin from outside and are stored there over a long period of time causing the side effects.

GREEN COFFEE BEAN EXTRACT AS ANTIOXIDANT – FOR MANAGEMENT OF SIDE EFFECTS FROM CHEMOTHERAPY

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Green coffee bean extract has become one of the top selling weight loss products in the market. Green coffee bean extract has good health-related benefits. The highest quality green coffee bean extract comes with higher polyphenol anti-oxidants such as chlorogenic acid.

The majority of coffee drinkers miss out much of the benefits that coffee contains because the deep roasting process of green coffee beans significantly reduces the anti-oxidant content of it. Now-a-days, green coffee bean extract containing chlorogenic acid is being studied for its effect on the management of the side effects of chemotherapy.

Here are four studies that show green coffee bean extract and its chlorogenic acid may benefit cancer patients: 7

  • A June 2014 study in The Journal of Inorganic Biochemistry found that chlorogenic acid showed promise in fighting breast cancer and recommended that it “would be a promising candidate for further evaluation as an antioxidant and anticancer agent.”
  • A 2009 study published in the Journal of Agriculture and Food Chemistryalso looked at breast cancer cells. Researchers in this study also found that the chlorogenic acid could potentially serve as cancer fighter and have a “chemopreventive” effect.
  • A January 2015 study published in the Journal of Cellular Oncology showed breast cancer is not the only cancer that appears to be helped by chlorogenic acid. This study looked at the effect of chlorogenic acid on lung cancer cells. That study proposed that chlorogenic acid could “represent a novel therapeutic option for the treatment of (lung) cancer.”
  • A February 2015 study published in Anti-Cancer Drugsshowed that chlorogenic acid could actually help a cancer patient’s body be more receptive to chemotherapy treatment. That study shows potential in making chemotherapy for liver cancer more effective.

This scientific evidence suggest that the green coffee bean extract containing chlorogenic acid can be opted as management strategy to get relief from the side effects of chemotherapy treatment.

REFERENCES

Categories
blog Cancer

Why do people get cancer?

A major function of the immune system is to recognize foreign objects (viruses, bacteria, parasites, splinters, and anything else that isn’t supposed to be in your body) and destroy them. Immune cells do this by recognizing specific targets on the surface of the item to be destroyed.  Cancer cells are abnormal and may be recognized as ‘foreign’ by immune cells.  Immune cells recognize small molecular ‘flags’ associated with tumor cells  (called tumor specific antigens (TSAs) or tumor associated antigens (TAAs)).  Immune cells can then kill these cancer cells.

Note: An antigen can be defined as anything the immune system can recognize.  It is a general term.  Antigens can be proteins, sugars, lipids, nucleic acids, or hybrid molecules.  Most antigens are proteins.

1If the immune system is able to recognize and kill cancer cells, why do people get cancer? 

It is thought that most cancers are caught very early and eliminated by the immune system.  The cancers that survive have to be able to evade the immune system.  It turns out that there are several ways that cancer cells avoid being recognized and killed.  These include:

  1. Cancer cells form from normal cells. Because cancer arises from a person’s own cells, it’s trickier for the immune system to recognize cancer cells than to identify a truly foreign invader like a virus.
  2. Cancer cells with the most targets on them are most easily killed by the immune system.  This sounds like a good thing, and it can make tumors shrink, but after a while, the cancer cells that are left have less targets on their surface. Those with the least amount of target antigens on their surface have the best chance of surviving, and tend to take over, making the cancer resistant to immune cells.  It is similar to treating a lawn with weed killer.  Any weeds that are resistant will survive and grow. After that, the weed killer will not work anymore.  The immune system accidentally ‘selects’ for cancer cells that it can’t recognize.
  3. Cancer cells can hijack normal control systems to turn the immune system ‘off’ in and around the tumor.  To keep the immune system under control, there are several controls (like ‘on-off’ switches) that work to regulate the activity of immune cells. Some cancer cells are able to flip that switch, turning the immune system off in the area around and in the tumor.  Treatments designed to reverse this are very promising and are described more below.
  4. Cancer cells can evade the immune system by making less of the ‘self’ signals that immune cells use to recognize defective or infected cells.Cancer proteins can be shown to the immune system by being stuck to cellular versions of flagpoles. By taking down the poles, cancer cells prevent this from happening and are able to avoid being recognized and killed.

Refernce:

  • Vinay DS, Ryan EP, Pawelec G, Talib WH, Stagg J, Elkord E, Lichtor T, Decker WK, Whelan RL, Kumara HM, Signori E, Honoki K, Georgakilas AG, Amin A, Helferich WG, Boosani CS, Guha G, Ciriolo MR, Chen S, Mohammed SI, Azmi AS, Keith WN, Bilsland A, Bhakta D, Halicka D, Fujii H, Aquilano K, Ashraf SS, Nowsheen S, Yang X, Choi BK, Kwon BS. Immune evasion in cancer: Mechanistic basis and therapeutic strategies. Semin Cancer Biol. 2015 Mar 25. pii: S1044-579X(15)00019-X [Epub ahead of print] [PUBMED]
  • Seliger B. Strategies of tumor immune evasion. BioDrugs. 2005;19(6):347-54. [PUBMED]
  • Poggi A, Musso A, Dapino I, Zocchi MR. Mechanisms of tumor escape from immune system: role of mesenchymal stromal cells. Immunol Lett. 2014 May-Jun;159(1-2):55-72. Epub 2014 Mar 20. [PUBMED]

 

 

Categories
blog Cancer Prostate Prostate Health

Know about Prostate Cancer

What Is Prostate Cancer?

Prostate cancer develops in a man’s prostate, the walnut-sized gland just below the bladder that produces some of the fluid in semen. It’s the most common cancer in men after skin cancer. Prostate cancer often grows very slowly and may not cause significant harm. But some types are more aggressive and can spread quickly without treatment.

Symptoms of Prostate Cancer

In the early stages, men may have no symptoms. Later, symptoms can include:

  • Frequent urination, especially at night
  • Difficulty starting or stopping urination
  • Weak or interrupted urinary stream
  • Painful or burning sensation during urination or ejaculation
  • Blood in urine or semen

Advanced cancer can cause deep pain in the lower back, hips, or upper thighs.

 

Enlarged Prostate or Prostate Cancer?

3The prostate can grow larger as men age, sometimes pressing on the bladder or urethra and causing symptoms similar to prostate cancer. This is called benign prostatic hyperplasia (BPH). It’s not cancer and can be treated if symptoms become bothersome. A third problem that can cause urinary symptoms is prostatitis. This inflammation or infection may also cause a fever and in many cases is treated with medication.

 

Risk Factors You Can’t Control

4Growing older is the greatest risk factor for prostate cancer, particularly after age 50. After age 70, studies suggest that most men have some form of prostate cancer, though there may be no outward symptoms. Family history increases a man’s risk: having a father or brother with prostate cancer doubles the risk. African-Americans are at high risk and have the highest rate of prostate cancer in the world.

 

Risk Factors You Can Control

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Diet seems to play a role in the development of prostate cancer, which is much more common in countries where meat and high-fat dairy are mainstays. The reason for this link is unclear. Dietary fat, particularly animal fat from red meat, may boost male hormone levels. And this may fuel the growth of cancerous prostate cells. A diet too low in fruits and vegetables may also play a role.

 

Myths About Prostate Cancer

6Here are some things that will not cause prostate cancer: Too much sex, a vasectomy, and masturbation. If you have an enlarged prostate (BPH), that does not mean you are at greater risk of developing prostate cancer. Researchers are still studying whether alcohol use, STDs, or prostatitis play a role in the development of prostate cancer.

 

Can Prostate Cancer Be Found Early?

7Screening tests are available to find prostate cancer early, but government guidelines don’t call for routine testing in men at any age. The tests may find cancers that are so slow-growing that medical treatments would offer no benefit. And the treatments themselves can have serious side effects. The American Cancer Society advises men to talk with a doctor about screening tests, beginning at:

  • Age 50 for average-risk men who expect to live at least 10 more years
  • Age 45 for men at high risk; this includes African-Americans and those with a father, brother, or son diagnosed before age 65
  • Age 40 for men with more than one first-degree relative diagnosed at an early age

 

Screening: DRE and PSA

8Your doctor may initially do a digital rectal exam (DRE) to feel for bumps or hard spots on the prostate. After a discussion with your doctor, a blood test can be used to measure prostate-specific antigen (PSA), a protein produced by prostate cells. An elevated level may indicate a higher chance that you have cancer, but you can have a high level and still be cancer-free. It is also possible to have a normal PSA and have prostate cancer.

 

PSA Test Results

9A normal PSA level is considered to be under 4 nanograms per milliliter (ng/mL) of blood, while a PSA above 10 suggests a high risk of cancer. But there are many exceptions:

  • Men can have prostate cancer with a PSA less than 4.
  • A prostate that is inflamed (prostatitis) or enlarged (BPH) can boost PSA levels, yet further testing may show no evidence of cancer.
  • Some BPH drugs can lower PSA levels, despite the presence of prostate cancer, called a false negative.

If either a PSA or DRE test are abnormal, your doctor will order other tests.

 

Prostate Cancer Biopsy

10If a physical exam or PSA test suggests a problem, your doctor may recommend a biopsy. A needle is inserted either through the rectum wall or the skin between the rectum and scrotum. Multiple small tissue samples are removed and examined under a microscope. A biopsy is the best way to detect cancer and predict whether it is slow-growing or aggressive.

 

Biopsy and Gleason Score

11A pathologist looks for cell abnormalities and “grades” the tissue sample from 1 to 5. The sum of two Gleason grades is the Gleason score. These scores help determine the chances of the cancer spreading. They range from  2, less aggressive, to 10, a very aggressive cancer. Gleason scores helps guide the type of treatment your doctor will recommend.

 

Prostate Cancer Imaging

12Some men may need additional tests to see if the cancer has spread beyond the prostate. These can include ultrasound, a CT scan, or an MRI scan (seen here). A radionuclide bone scan traces an injection of low-level radioactive material to help detect cancer that has spread to the bone.

In the MRI scan shown here, the tumor is the green, kidney-shaped mass in the center, next to the prostate gland (in pink).

 

Prostate Cancer Staging

13Staging is used to describe how far prostate cancer has spread (metastasized) and to help determine the best treatment.

  • Stage I: Cancer is small and still within the prostate.
  • Stage II: Cancer is more advanced, but still confined to the prostate.
  • Stage III: Cancer has spread to the outer part of the prostate and nearby seminal vesicles.
  • Stage IV: Cancer has spread to lymph nodes, nearby organs or tissues such as the bladder or rectum, or distant organs such as bones or lungs.

 

Prostate Cancer Survival Rates

14The good news about prostate cancer is that it usually grows slowly. And 9 out of 10 cases are found in the early stages. Overall, the 5-year relative survival rate is 100% for men with disease confined to the prostate or nearby tissues, and many men live much longer. When the disease has spread to distant areas, that figure drops to 28%. But these numbers are based on men diagnosed at least 5 years ago. The outlook may be better for men diagnosed and treated today.

 

Treatment: Watchful Waiting

15With low-risk cancer, one option is to watch and wait. This is determined by your biopsy, PSA test, and Gleason scores. Your doctor will order periodic testing. Other treatments — with the risk of sexual or urinary problems — may not be necessary. Some men who are older or have serious health conditions may not need treatment. However, more aggressive treatment is usually recommended for younger men or those with more aggressive disease.

 

Treatment: Radiation Therapy

16External beam radiation to kill cancer cells can be used as a first treatment or after prostate cancer surgery. It can also help relieve bone pain from the spread of cancer. In brachytherapy, tiny radioactive pellets about the size of a grain of rice are inserted into the prostate. Both methods can impair erectile function. Fatigue, urinary problems, and diarrhea are other possible side effects.

There are some centers that provide proton therapy (a form of radiation therapy) for prostate cancer.

Treatment: Surgery

Removing the prostate, or radical prostatectomy, is used to eliminate the cancer when it is confined to the prostate. New techniques use smaller incisions and seek to avoid damaging nearby nerves. If lymph nodes are also cancerous, prostatectomy may not be the best option. Surgery may impair urinary and sexual function, but both can improve over time.

 

Treatment: Hormone Therapy

17Hormone therapy may shrink or slow the growth of cancer, but unless it is used with another therapy it will not eliminate the cancer. Drugs or hormones block or stop the production of testosterone and other male hormones, called androgens. Side effects can include hot flashes, growth of breast tissue, weight gain, and impotence.

 

Treatment: Chemotherapy

18Chemotherapy kills cancer cells throughout the body, including those outside the prostate, so it is used to treat more advanced cancer and cancer that did not respond to hormone therapy.  Treatment is usually intravenous and is given in cycles lasting 3-6 months. Because the chemotherapy kills other fast-growing cells in the body, you may have hair loss and mouth sores. Other side effects include nausea, vomiting, and fatigue.

Treatment: Cryotherapy

19Cryotherapy freezes and kills cancerous cells within the prostate (like the highly magnified cells shown here.) It is not as widely used because little is known about its long-term effectiveness. It’s less invasive than surgery, with a shorter recovery time. Because the freezing damages nerves, as many as 80% of men become impotent after cryosurgery. There can be temporary pain and burning sensations in the bladder and bowel.

Treatment: Prostate Cancer Vaccine

20This vaccine is designed to treat, not prevent, prostate cancer by spurring your body’s immune system to attack prostate cancer cells. Immune cells are removed from your blood, activated to fight cancer, and infused back into the blood. Three cycles occur in one month. It’s used for advanced prostate cancer that no longer responds to hormone therapy. Mild side effects can occur such as fatigue, nausea, and fever.

 

Hope for Advanced Cancer

21Your doctor will continue to monitor your PSA levels and may perform other tests after treatment for prostate cancer. If it recurs or spreads to other parts of the body, additional treatment may be recommended. Lifestyle choices may matter, too. One study found that prostate cancer survivors who exercised regularly had a lower risk of dying, for example.

 

Coping With Erectile Dysfunction

22Erectile dysfunction (ED) is a common side effect of prostate cancer treatments. Generally, erectile function improves within two years after surgery. Improvement may be better for younger men than for those over age 70. You also may benefit from ED medications. Other treatments, such as injection therapy and vacuum devices, may help.

 

Food for Health

23A cancer-conscious diet may be the best choice for survivors who want to bolster their health and those hoping to lower their risk. That means:

  • Five or more fruits and veggies a day
  • Whole grains instead of white flour or white rice
  • Limit high-fat meat
  • Limit or eliminate processed meat (hot dogs, cold cuts, bacon)
  • Limit alcohol to 1-2 drinks per day (if you drink)

Foods high in folate may have some action against prostate cancer (such as spinach, orange juice, lentils). Studies found mixed results on lycopene, an antioxidant found in tomatoes.

 

Source- http://www.webmd.com/prostate-cancer/ss/slideshow-prostate-cancer-overview?ecd=wnl_men_012517&ctr=wnl-men-012517_nsl-ld-stry_1&mb=0Pr4CIOfW73AFmF7R4FSJeHnVev1imbCwl%2fJ9StOSgE%3d