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Wednesday, July 20, 2011

Prostate Specific Antigen

Prostate Specific Antigen

 
1. The levels of serine protease enzyme produced in the prostate which is commonly known as prostate specific antigen and abbreviated to PSA.

2. Determination of PSA levels can be used to gauge the likelihood that the patient has developed prostate cancer or not.

3. The PSA test is generally taken in parallel with the digital rectal examination to ensure more accurate diagnosis.

4. Men normally have a low level of PSA in the blood stream; levels of PSA can become elevated if prostate function is disrupted.

5. Elevated PSA levels alone are not necessary an indicator of cancer, as infections of the prostate and benign growths may also lead to leakage of PSA into the bloodstream.

6. Other factors that increase the prostate specific antigen levels in a test include recent ejaculation and bike riding. It has been recorded many times that patients with a high PSA score do not have cancerous growth of the prostate.

7. The levels of PSA are also very dependent upon age and the size of the prostate, generally older people and larger prostates result in a naturally higher level of PSA’s. Conversely many drugs, such as those given to combat benign prostate hyperplasia can lead to a lowering of PSA levels and hence mask detection of cancerous growth. PSaA is measured in nano-grams per millilitre and is normally in the range of 0.1 to 4.

8. There are two forms of PSA present in the bloodstream, those bound to alpha antichymotrypsin, which are the most abundant form, and free PSA. It is generally considered that by analyzing the percentage of free PSA together with total PSA (defined as percent-free PSA) will lead to a better PSA test result interpretation and a more accurate diagnostics of the chance of a patient having prostate cancer.

9. Patients with PSA test results of between 4 and 10 are normally considered borderline patients; the level of percent free PSA well then determine if a biopsy is required. If percent-free PSA test numbers are 10% or less then the chance of having cancer is about 50%. Normally a doctor will recommend a patient has a biopsy if percent-free PSA readings are less than 25%.

10. It is recommended that both a digital rectal examination and a Protein specific antigen test are carried out together.

Thursday, July 7, 2011

'Salt intake not linked to heart disease'

'Salt intake not linked to heart disease'

TNN , Jul 7, 2011, 06.03am IST
(Source: Times of India newspaper on Internet; The following interesting news from Times of India newspaper is being posted for general awarness).
 
LONDON: For years, doctors have been saying that too much salt is bad for health. Yet, a new study claims that it's safe to eat - and cutting its intake does nothing to lower risk of having heart disease. High levels of salt have long been linked to a greater risk of developing hypertension , heart attacks and strokes. Now, researchers at the University of Exeter claim to have found evidence that although blood pressure is reduced when salt intake is cut, there're actually no longterm health benefits, the 'Daily Express' reported. They reviewed seven researches that looked at 6,489 people, which they said was a large enough set of data from which to draw conclusions. Most researches recommen ded a reduction of 50% of nor mal salt intake. A person's daily salt intake from the research papers reviewed was on average 8-9 g a day, so the reduction was to around 4g. But this had no long-term health benefit. "Encouragement to reduce salt intake did lead to a reduction in salt eaten and a small reduction in BP after six months. "What we wanted to see was whether this dietary change also reduced a person's risk suffering from cardiovascular events," author Prof Rod Taylor said.

Tuesday, January 18, 2011

A Clove of Garlic to beat tuberculosis

A Clove of Garlic to beat tuberculosis
Abantika Ghosh TNN

New Delhi: The unassuming garlic in your kitchen could be ’s saviour from multidrug resistant tuberculosis (MDR TB). Researchers at the Aligarh Muslim University (AMU) have found that allicin — a natural anti-oxidant present in garlic — can prevent replication of the MDR TB bacterium inside the human body. The findings were recently published in the journal of the Federation of European Biochemical Societies — FEBS Letters. Now there is increasing talk worldwide of allicin being the answer to not just TB but to drug resistant forms of all diseases. Though the capsules would need to be enteric coated because the stomach acid is known to quickly destroy allicin. Najmul Islam, reader at the department of biochemistry in J N Medical College, AMU, toldTimesCity: ‘‘Garlic contains a highly unstable compound called allin and an enzyme called allinase is extracted when garlic is crushed or chewed. Under the effect of allinase, allin is converted to allicin, a potent antioxidant that prevents formation of reactive oxygen and reactive nitrogen species inside the body.’’ The topic is the Phd thesis of an AMU research fellow Nazarul Hasan. The free radicals, he explained, are essential for the replication of any bacterium inside the body. ‘‘We chose the MDR TB bacteria and introduced allicin into blood cells infected with it. The bacteria stopped replicating. Allicin has also been found to increase the activity of an enzyme called glutathione peroxidase that decreases the production of reactive oxygen species,’’ Islam said. ’s rising MDR TB burden has been a matter of concern of national and international health authorities for some years now. An estimated 500,000 Indians die of TB every year, of which some 3% are victims of MDR TB. Internationally, the TB death toll is estimated to be two to three million per year. Multidrug resistant TB is resistant to more than two of the primary antibiotics used for treatment of TB. The most common reason for its genesis, doctors say, is the common practice of patients to start intake of an antibiotic but not finish its full course so that the bacterium which is exposed to the chemical but not killed gets enough time to mutate to a variety which is resistant to that particular chemical. Islam added: ‘‘The advantages of allicin are many. It does not require sophisticated storage and delivery systems and thus the possibility of losing its potency in any storage condition and time in comparison to known medicine for TB is nil. It is easily available and costs less with no known side effects.’’ Researchers at the Aligarh Muslim University (AMU) have found that allicin — a natural anti-oxidant present in garlic — can prevent replication of the MDR TB bacterium inside the human body. The findings were recently published in the journal of the Federation of European Biochemical Societies — FEBS Letters. Now there is increasing talk worldwide of allicin being the answer to not just TB but to drug resistant forms of all diseases. Though the capsules would need to be enteric coated because the stomach acid is known to quickly destroy allicin. Najmul Islam, reader at the department of biochemistry in J N Medical College, AMU, told : ‘‘Garlic contains a highly unstable compound called allin and an enzyme called allinase is extracted when garlic is crushed or chewed. Under the effect of allinase, allin is converted to allicin, a potent anti The free radicals, he explained, are essential for the replication of any bacterium inside the body. ‘‘We chose the MDR TB bacteria and introduced allicin into blood cells infected with it. The bacteria stopped replicating. Allicin has also been found to increase the activity of an enzyme called glutathione peroxidase that de ’s rising MDR TB burden has been a matter of concern of national and international health authorities for some years now. An estimated 500,000 Indians die of TB every year, of which some 3% are victims of MDR TB. Internationally, the TB death toll is estimated to be two to three million per year. Multidrug resistant TB is resistant to more than two of the primary antibiotics used for treatment of TB. The most common reason for its genesis, doctors say, is the common practice of patients to start intake of an antibiotic but not finish its full course so that the bacterium which is exposed to the chemical but not killed gets enough time to mutate to a variety which is resistant to that particular chemical. Islam added: ‘‘The advantages of allicin are many. It does not require sophisticated storage and delivery systems and thus the possibility of losing its potency in any storage condition and time in comparison to known medicine for TB is nil. It is easily available and costs less with no known side effects.’’