10 Mart 2008 Pazartesi

DNA Testing Improves Identification Of Survivors

We human beings are born to be unique. Although twins of similar features and sexes are hard to be differentiated, there is still one big difference if you look enough underneath all the layers of organs. The answer lies in the genetic markers in our DNA.
In this case, we can even reconstruct genetic profile of someone distant in your family tree or missing family member as gene inheritance happens in family like from grandparents to parents and so forth.
This identification method that is now being used for situations that, due to decomposition and the loss of medical records, have exhausted all other available identification methods.
For example, the World Trade Center 2001 destruction, Hurricane Katrina 2005 and South East Asia tsunami chaos 2004 which resulted in thousands of death which may need few days or weeks to retrieve the bodies and to be brought back to the morgue as weather, lack of humanitarian volunteers, badly affected location and also lack of technology could improve situation.
Forensic and postmortem protocols could check on features like dental, fingerprint, sex, hair color and others. In addition, with further implementation like DNA matching, it is necessary for identification of children who were lacking little antemortem dental or fingerprint data.
With standardized procedures, it would be likely for months to correctly match the corpse using genetic markers. In addition, roughly only 50 to 60% of the 3025 persons who died in 9-11 chaos were managed to be identify in 18 months.
Certain DNA markers that are shared among a deceased individual's DNA profile and several survivors' reference sample profiles indicate that a relative has been found and can now be identified. Of course the high cost of DNA testing and lack of morgue with the expertise in those destructive places may lead to slow identification.
In 2006, the DNA Shoah Project was set to achieve its goal to give the departed Holocausts victims the last respect they deserved and to create a DNA database that can serve as both a genetic family tree and a memorial to those who perished.
The hope was to match these remains with DNA samples gathered from Holocaust survivors and from descendants of the departed.
The project's second aim: to unite those orphaned by the Holocaust with a close relative who survived. With a large database of living survivors, internal matches among them could also turn up.
DNA typing has often been portrayed in the media and the courtroom as a controversial technology but in a way, it certainly acts as a helping tool in identification tool in survivors or dead bodies. People say dead bodies don't talk, but if you study deep to their bones, they tell stories untold.
Nevertheless, the basic premise of the argument is valid and has been incorporated into recommendations about how forensic DNA testing be conducted and interpreted.

DNA of Obesity

In US alone, more than half population is either overweight or obese. The statistic is alarming as obesity is associated with many chronic diseases including cardiovascular disorders, diabetes and others. It's a need to identify genes that have prominent influences on obesity.
INSIG2 gene induced by insulin would inhibit the fatty acid and cholesterol synthesis. People with a sequence variation near the gene would exhibit more fat accumulation, as the normal functional gene could not complete its potential.
In three rare diseases of severe fat malabsorption, chylomicron retention disease (CMRD), Anderson disease and CMRD with Marinesco Sjogren syndrome, the Sar1b protein required for all dietary fat absorption could not work normally because of genetic mutation.
Gene variant FTO that is susceptible to type 2 diabetes can be found among over half of European population who is linked with obesity causes. If a person with two copies of FTO variant is likely to weigh 3 kilos more than a normal person, and person with only one copy there are more likely to weigh 1.2 kilos more.
The human lipin gene might be a candidate for obesity was excess levels in fat tissue or skeletal muscle will promote the condition. Deficiency in lipin levels would prevent normal development of mature fat cells.
Another mutant gene, ENPP1 which presents in 20% Caucasians and 50% of black people, will block insulin from binding in pancreas and the brain. Thus, the insulin resistance will store excess glucose production from liver as layers of fat and diminish insulin secretion that will lead to increased risk of type 2 diabetes.
GAD2, a gene found on chromosome 10 can speed up the production of a chemical transmitter in the brain, GABA, which stimulates appetite. One form of the gene appeared to protect some people against obesity, while another form increased the risk of the disorder.
About 20 genes maybe involved in causing common obesity, but genetics alone cannot fully account for a worldwide obesity trend in recent decades.

DNA In Forensic Science

Since the introduction of DNA testing started to use as evidence in 1990, the criminal justice system has been improved but mistakes and human errors have downplayed the effectiveness of this DNA technology.
This DNA forensic has undeniably helped in solving tough cases and yet, public awareness of the information is only surface touching depth.
Forensic identification tests can link the DNA segments to each individuals existing.
Examples of DNA uses in the field include identification of potential suspects whose DNA maybe match leftovers at crime scenes, establishment of paternity and family relationships of victims whom could not be recognized based on their outlooks and matching organ donors with recipients in transplant programs.
The selected interesting cases of forensic identification which involved the DNA Shoah Project, identification of the 911 and South East Asia 2004 Tsunami victims.
There have been two main types of forensic DNA testing. They are often called; RFLP and PCR based testing, although these terms are not very descriptive.
Generally, RFLP testing requires larger amounts of DNA and the it must be under graded. Crime-scene evidence that is old or present in small amounts, is often unsuitable for RFLP testing.
Warm moist conditions may accelerate DNA degradation rendering it unsuitable for RFLP in a relatively short period of time. PCR-based testing often requires less DNA than RFLP testing and the DNA may be partially degraded, more so than is the case with RFLP. However, PCR still has sample size and degradation limitations that sometimes may be under-appreciated.
PCR-based tests are also extremely sensitive to contaminating DNA at the crime scene and within the test laboratory. During PCR, contaminants may be amplified up to a billion times their original concentration. Contamination can influence PCR results, particularly in the absence of proper handling techniques and proper controls for contamination.
PCR is less direct and somewhat more prone to error than RFLP. However, PCR has tended to replace RFLP in forensic testing primarily because PCR based tests are faster and more sensitive. Science cannot yet provide conclusive results on genetics and behavior. Discovering more about ourselves to the basic components can reveal much more about us.
Blood group, originality, race, allergies, genetic dominance and other elements just showed that we are fascinating creatures to exist on earth.

DNA - Overview Of The Importance and Basics

Humans have something in common - DNA (Deoxyribonucleic Acid) which is secretively hidden in our chromosomes. Since DNA is a type of nucleic acids which is made of from millions of nucleotides. Nucleotide is a basic unit of building a long strand of DNA - just like building a house; the basic units are the bricks, concretes and etc.
What is so mysterious about DNA?
Since it's a small structure with approximately 2.2 - 2.6 nanometers wide, it contains a genetic code that can be deciphered to unveiled the secrets of our body. Advances in DNA technology enable us to unlock the secrets of our body as to search for the meaning of mankind.
You look like your mom...you'd got the eyes just like your father...you're as strong as your uncle...
These traits can be explained as it is related to genes - genetic information that inherited from our parents - possibly contains sub-information about our ancestors. DNA can be treated as our entity - a living proof that makes us adapting to all sorts of surroundings.
This represents how humans are enabling to survive since human population had reached more than 6.6 billion as recorded on July 2007.
How do we look different among each other?
All of us differ to the type DNA - means that each of us has DNA which has different genetic information except individual twins who has identical DNA. People often being mislead by assuming fingerprint is similar to DNA.
Actually, humans have their own distinctive fingerprints and DNA but individual twins have different fingerprints. However, differences of DNA among races based on their appearances (phenotypic traits) have yet able to be distinguished as we need more time and effort to map and identify common distinctive traits at the DNA level.

Discovery of DNA Teaches Us About Motivation

Besides knowing what DNA stands for - which means "Deoxyribonucleic Acid", there are few things that we might have overlooked. The discovery of DNA model has lead many scientists in encrypting codes of life which could bring us closer to humanity and self-assurance.
DNA replicates in cells when the environment permits them to do so. During DNA replication, new strand of DNA will be duplicated based on the DNA template which acts as a mould. The new DNA strand elongates in which the nucleotides are attached to each other based on sequences of the DNA template. It is like a building-blocks model, it has different color blocks and you use these color blocks to build a tower or a building.
What personal insights that we gain into the discovery of DNA?
In order to start a task, or a project, it must begin with building a foundation. Building a foundation must be based on proper sequences. Similarly in DNA replication process, it begins with a DNA template that allows nucleotides bind at it with joining one nucleotide at a time.
At the same time, a chemical bond is formed among nucleotides which also produce the backbone structure for the newly-formed strand DNA. Things would become awry when you started a project with weak foundation - it like having a sand foundation; things will crumble easily even though you are just getting started.
The newly formed DNA strand eventually matures and become one DNA template in the next DNA replication. It is like a life-cycle - what comes around goes around. Basically, building a foundation is an on-going process; it stops when it is done.
The nucleotides are subsequently joined together by grouping one nucleotide at a time. Creating a product requires sequences. Simple small steps should be taken before making a product. Each small step is crucial in such a way to define our objectives or goals that is essential to our success.
As a matter of fact, we learn to sequence things since young and it has proven that our focuses on life can be maintained as we reached different stages of life.
In the blooming of DNA technology era, DNA testing has been introduced to various fields that have increase popularity of the noble DNA structure which has celebrated 50 years of its discovery. DNA testing has raised humanity issues such as tracking down our ancestor lines. As we know that our DNA contains genes that inherited by our parents, it is possible that we can have track down our ancestors based on modern DNA testing procedures.
DNA is a unique structure that stores millions of information about inheritance. Some of this information is passed from one generation to the other. Ancestor search show us about our existence, and how we are connected to each other.
Each of us has an identity - it means that we have our own distinctive DNA fingerprint. Our DNA fingerprint is like our entity - it is private and protected according to civil rights. There is nothing to be ashamed of being different than others.
Knowing our existence helps us to understand ourselves better including pin-pointing our strengths and weaknesses. These could improve your ability to communicate with people especially in broadening social networking.
There had been several cases about exoneration of wrongfully imprisoned convicts over the past few years. It takes perseverance and patience for them to find new taste of life. DNA testing has given them fresh of life and brought justice back to them. People have gain insight into the plight of the innocent prisoners, as they have begun appreciating the values of life. It has taught us to be firm at making decisions and be brave to make a stand against criticisms.
The discovery of DNA creates precedence of current DNA testing technology that leads us to a promising future.

Cosmetics And DNA

Think of Pamela Anderson Lee figure model displaying the perfect tone body on billboard advertisements on the highway.
Think of photo shopped pictures of celebrities on pages of magazine.
Think of how the plastic surgery enhancement crazes mania amongst the Hollywood celebrities.
With all these obsession about a certain small thing that we described as outlook, people use to turn to cosmetics enhancement procedures like invasive plastic surgery that involves scalpels, lasers and injections or now, a new trend that doesn't need operation procedure but it's called DNA magic.
Cosmetics company, Valmont, sells a concoction called Cellular DNA complex which they claimed made from 'specially treated salmon roe DNA' at the price of £236 for seven phials.
The enhancement features include moisturizing, regenerating and protecting of DNA. Does smearing specially treated salmon DNA on your face will do wonders?
To vanish those wrinkles on our face forever, the biggest anti-ageing advancement since Botox declared by Clients of Dermagenetics have changed our way we think about beauty products.
If their claims are true, that also means that we have wasted on the money on beauty products that actually are doing us more harm than good. In the procedures, a patient is sent a kit, which includes two cotton swab and a return envelope.
They are asked to rub the swab along the inner cheek ten to 12 times before leaving it to dry and sending it back for testing. Experts will measure the genetic propensity for collagen breakdown, wrinkling, skin ageing, and their skin's ability to tolerate environmental pollutants and overall skin health from the cells.
Within a fortnight, clients will be sent a tailor made night cream that contains various minerals, enzymes, herbal extracts and acids specifically balanced to suit them.
But is this a clever marketing campaign to make money faster by blinding people with science? It also makes us believe that understanding our own DNA can reverse the ageing process?
European and American legislators have established a policy of closely scrutinizing any anti-ageing claims for cosmetic products.
However, we can't deny that one extremely effective tool would be a product that helps cells to repair DNA damage.
Existence of a liposome like vesicle containing either T4 endonuclease V or a photolyase from cyanobacteria is industrially manufactures and their effectiveness has been proven beyond doubt.
The former has appointed as a drug in the USA and Japan to treat genetic disease xeroderma pigmentosum.
Importance and deep interest in this issue only pointed out our desires: to find products that would not only have cosmetic value for the skin but would surely benefit the rest of our bodies.

Using DNA Testing

DNA testing is by far the most effective and accurate means by which a biological relationship can be said to exist between one person and another. Whether that be through traditional paternity testing or alternatively testing some more distant relationship (usually in order to determine paternity), such as avuncular testing or grandparentage testing, there are a number of significant reasons for using DNA testing where disputes or potential discrepancies arise. Whilst there is a minimal margin for error in any testing, DNA testing is the most accurate form of establishing relationships available, which makes it ideal for use in a number of scenarios.
Legal Use One of the most common uses for DNA testing is for legal reasons. There are a number of legal scenarios where paternity, or family relationships become important to the outcome of a case. Whether that be an intestate inheritance dispute, where determining family relationships could have a significant bearing on the execution of a particular estate, or some child law reason, DNA testing is one of the most accurate ways of picking up on genetic relationships which can provide the necessary proof for determining the correct legal outcome. As a result of its increased effectiveness over other methods of detection, nothing compares to DNA testing for accurately determining family relations.
Medical Use Medical use is the other major field of practice for DNA testing. In medical situations, it can often be important to determine biological relationships in determining potential exposure to certain genetic conditions and in matching suitability for certain treatments. As medical research continues to advance, so too DNA testing becomes more high profile and more widely used in general practice as a far more conclusive way of identifying family relationships where is matters most.
"Curiosity" Testing Whilst testing doesn't usually require maternal DNA samples, the at-home, or so-called Curiosity test is a good way to get peace of mind or to determine with some conclusivity whether or not you share a family relationship with another person - mostly a child. By testing oral swabs through a DNA testing kit normally sent to the client, the at-home testing is both easy to effect and accurate in producing results for determining DNA links where paternity is in question. For personal reasons or just for the sheer curiosity, the at-home test is far less controlled by protocol, but nevertheless can come up with accurate results where a particular relationship exists.
DNA testing is becoming more and more available, as the most accurate means of testing relationships. Where there is at least some degree of relationship, there is nothing more effective at determining genetic relationships than DNA testing, particularly in light of the advances in testing technology in recent years. From paternity testing through to siblingship testing and even grandparentage testing, using a DNA test can be a cost-effective and accurate way to determine whether or not alleged relationships do in fact exist. With that in mind, DNA testing should be your first choice of action should a family disputes arise on a biological relationship.

Testing Different Relationships with DNA Testing

DNA profiling technology has come a long way in the last few decades, and it is now possible to identify a number of difference biological relationships between any given person. Through using slightly more in-depth matching processes than with traditional DNA paternity tests, the wider testing methods available are nevertheless accurate enough to determine whether or not there is some biological connection to establish relationships and afford peace of mind, allowing families to greater understand their actual setup and resolve legal and medical disputes.
Paternity Testing Probably the most common relationship examined with DNA testing is paternity testing. The methods used in this type of testing have improved to mean a greater degree of accuracy in judging where relationships do or do not exist. Whether it be for legal, medical or even just personal reasons, paternity testing is by far the most effective way of determining in just a few days whether or not a biological relationship exists between two people.
Grandparentage DNA Testing In the absence of the alleged father of a child it is possible to determine a biological relationship with grandparents where either one or both are available. This can be particularly useful to determine biological links where the father has predeceased or alternatively where he is otherwise unavailable through testing. Whilst it is desirable for both grandparents to be present for testing, for reasons of ensuring greater accuracy and more conclusive results, it is also possible for the test to be carried out on one grandparent with a degree of accuracy in matching DNA.
Siblingship DNA Testing An alternative testable relationship is that of siblingship - identifying whether two particular people share the same parents, where neither parent is available for testing themselves, for example having predeceased or having emigrated abroad. Whilst the most effective determiner is through testing both the mother and the father of the alleged siblings, it is more than possible to test the siblings on a DNA comparison to work out whether there is a relationship there.
Y-STR Male Lineage Testing One of the most innovative DNA testing methods refined in recent years is the Y-STR male lineage test which allows identification of male biological relationships through testing the Y-chromosome which is passed down paternal lines and rarely changes throughout generations, allowing for more straightforward DNA comparisons. With Y-STR testing, it's possible to identify grandfather/grandson relationships, or even further relationships along vertical family branches.
Avuncular DNA Testing It is also possible to examine where Avuncular relationships may be exist by testing the brother or sister of an unavailable parent, to determine whether a particular two people share a relationship of aunt or uncle with one another. This can be particularly useful in helping assess paternity where a father has predeceased with living siblings, who can be matched to the alleged niece or nephew.
Whether you require a DNA test for medical reasons, legal reasons such as determining inheritance in intestacy, or just for your own personal motivations, testing biological relations has never been easier than with DNA testing.

Dean Ornish Shows How To Reverse Prostate Cancer With Nutrigenomics

You can reverse prostate cancer and many of the diseases associated with aging by changing your diet.
Sounds unbelievable, but it's true.
It's a finding reported by Dr. Dean Ornish in his new book The Spectrum.
I've already told you how Dr. Ornish showed 30 years ago that it's possible to reverse heart disease by eating a plant-based diet, exercising, meditating, practicing yoga, and being part of a supportive group.
In The Spectrum, he goes even further.
He shows that these same principles of healthy living can also reverse cancer and other diseases of aging.
And he explains exactly why this is possible.
His findings are nothing short of groundbreaking. And with the current dismal state of our healthcare system, they're more urgently needed than ever before.
This country pays $100 billion a year for invasive bypass surgeries that aren't very effective and don't even extend life. We spend $15 billion a year for Lipitor, which comes with plenty of unpleasant side effects.
But now Dr. Ornish has shown that his program of lifestyle changes is more effective and a lot cheaper than drugs and surgery. And the side effects -- like weight loss and extra energy -- are positive ones.
Astounding Results
Patients everywhere -- including my own -- have been seeing real results from Dr. Ornish's program.
One of my patients is a 65-year-old man who had both heart disease (which was being "treated" with drugs and angioplasties) and prostate cancer.
But we got him working to improve his nutrition and exercise. After 5 years, tests showed that the blocked arteries in his heart were dramatically better. And his prostate cancer was gone, too.
He even called me on his birthday that year to say that he felt healthier at age 70 than he had at 60. He was off all medications and feeling great.
This is what's possible when you change your lifestyle.
Because, as Dr. Ornish explains in The Spectrum, when you change your lifestyle -- the foods you eat, the activity you get, the way you manage stress and relationships -- you also change your genes.
Compelling Research
Dr. Ornish's program really works -- and he's done the research to prove it.
For example, he studied 93 men with prostate cancer who were practicing "watchful waiting" (waiting to see if their cancer worsened before getting conventional treatment).
Half the group kept their usual lifestyle. The other half followed the lifestyle program described in The Spectrum.
The results were stunning. Dr. Ornish found that prostate cancer growth was reduced by 70 percent in the group that followed his program.
Four years later, only six of the lifestyle program patients needed conventional treatment -- compared to 21 control patients.
Those results are impressive, but even more intriguing is the evidence that Dr. Ornish's approach can actually affect your genes.
As I've explained before, changing your lifestyle can switch different genes on and off. Using food to do is called nutrigenomics.
In The Spectrum, Dr. Ornish talks about research on telemores -- the little repair systems on the end of your chromosomes that protect your DNA. The shorter the telomeres, the shorter your life.
The research he describes found that mothers who felt the most stressed actually had the shortest telomeres -- equal to about an extra decade of aging!
So Dr. Ornish applied his comprehensive lifestyle changes and found that the telomerase (the enzyme that keeps telomeres healthy) was higher.
The result? Reversal of the aging effects of chronic stress!
Let me repeat: You can reverse the effects of stress on your genes -- and on the aging process - just by changing your lifestyle.
As Dr. Ornish describes in The Spectrum, this means eating a plant-based diet of whole foods, getting regular exercise, and managing stress.
I could continue to tell you how instrumental Dr. Ornish's work has been, or how it has arrived at the time when we need it most.
I could tell you that he has been a fearless advocate for good health and that he's overcome countless obstacles to change medicine, healthcare policy, and the insurance industry.
On a personal level, I could tell you that I've rarely met a more courageous person with a more generous heart.
But don't take it from me. Take a look at his work.
It's all there, in his new book, The Spectrum.
Again, I urge you to read this powerful account of Dr. Ornish's research. While you're at it, share a copy with your doctor, your loved ones, and even your congressperson.
Remember, you can change your genes -- and your life - simply by changing the way you live.

DNA Markers for Genealogy

DNA Markers for Genealogy - Mitochondrial DNA Genealogy
Who else wants to know about DNA markers for genealogy? Here is a simple scientific test to trace your ancestors. Did you know that DNA From One Generation To The Other Is Almost Conclusive Evidence. This breakthrough in genealogy research has been making headlines for the past several years with some astounding proof of kinship between some very prominent historical figures.
DNA testing for family tree is not only convenient, but also simple. You find a genealogy testing company either in the phone book of on the Internet. Next, make an appointment and go to the company on your assigned day, fill out the forms, pay the fee and your good to go. The DNA genealogy test starts with a mouth swab of your mouth near the cheek. Many companies give you a kit so you can do the mouth swab at home and mail in the results to the laboratory. After the laboratory tests the DNA, the results are sent back to testee.
Wide DNA Databases Compare
The company doing the genealogy DNA testing will obviously need to have access to DNA databases which they will use to make comparisons and once these comparisons show their results, the company will then send you the results regarding whom your DNA swab matched with. You should realize that each and every cell is sure to have your DNA and whether it is your sperm or egg cells or even the sex cells, you will be providing your own unique DNA for further matching.
Parents Pinpointed
Listen closely. Genealogy DNA testing is helpful in pinpointing an individual's parentage and it can be used extensively when you need to know who the mother is, and also in case of adoptions. Thus, it is easy to see how genealogy DNA testing can help with creating your family tree because your DNA will have been passed from one generation to the next and the information pertaining to your ancestors will be encoded therein.
The Egg The Sperm
When your sperm and also egg cell combine together, a new cell is created that will hold DNA from either parent and when genealogy DNA testing is performed in specialist laboratories, they will help provide evidence whether you are related to another person with a matching DNA. What's more, the chances of two persons having identical DNA are very small with the exception of identical twins which are due to the fact that their DNA is identical because the fertilized egg had split and formed two fetuses obtained from a single sperm and also from the same egg.
Cutting Edge Medical Science Genealogy DNA Testing
Just imagine, as DNA is passed from generation to generation there is very little change in its structure. This is amazing and is the primary reason to use DNA markers for genealogy testing to explore your ancestry. In no time at all, the link between families can be nailed down and makes the construction of a family tree that much more reliable and accurate. And new advances are being made in medical science to enhance and improve the DNA testing for family tree.