The recent development of next-generation sequencing, which allows the analysis of the distribution of DNA bases over hundreds of different genes and gene segments in a single sample, has become an exciting alternative to microarray assays. These utilise a hybridisation technique and tiny amounts of DNA sample and target antibody, to produce quantifiable fluorescent spots on a biochip. However, the process results in variable results between experiments, and the DNA can hybridise in more than one spot, creating misleading data.

Next-gen sequencing, although in its infancy, addresses these problems by performing actual sequence reads. In combination with antibody probes, it has been used to determine regulatory biomarkers in chromatin; distinguish the differences between stem cells and differentiated cells; locate the binding position of a neural regulatory protein in the genome, and explore how activation by an external signal affects the behaviour of a regulatory protein. These areas are familiar to anyone ordering proteins from our antibody catalog.

Our antibody catalogue is primarily used for disease research. Recently, next-gen technology has been used to identify gene loci associated with the autosomal recessive/dominant disorders Miller and Schinzel-Giedion syndrome, and TARP syndrome, an X-linked form of cleft palate caused by a mutation in the RBM10 gene.

Recently King et al, of the University of Washington, reported it as a fast and cost-effective way to screen women for DNA mutations linked to ovarian and breast cancer. A large number of proteins on our cancer antibody database are devoted to breast cancer.

- The attitude to pain, influence the risk of pain and especially in its duration and the risk of recurrence. The available studies show that patients who have suffered back pain can react in two ways:

1. A (the “elusive”) is frightened by the pain and fear for their future, mistakenly thinking that every time they notice a sore back necessarily mean that your injury is getting worse. So rest a lot, avoid physical activity, waiting passively for the pain better, and tend to abuse drugs, especially painkillers.

2. Others (the “combative”) does not fear for their future and hope the pain will get better or if not, can adapt to it. They have a life as normal as they can, keep active and go to work, avoiding only what really prevents them from pain and not afraid if you ever notice an annoyance. The available studies show that, in connection with the “elusive”, the “militant” are less likely to suffer back pains back and, if present, they take less.

These facts are explained by several reasons:

- First, by psychological aspects: the “elusive” tend to obsess about their pain and discomfort interpret the passengers who may feel at any given time reflect a serious injury. Therefore, it is stressed, which is an additional risk to your back. In addition, anxious and depressed more easily, which makes that tend to further magnify the pain they feel.

- Apart from the physical point of view, excessive rest and inactivity tend to accelerate the loss of power and muscular endurance, making the back more vulnerable to overload and facilitating the risk of pain recurrence or perpetuate .

- Stress, increases the risk of back pain. It really has more influence on the perception of pain in the risk of emergence, ie only increase the likelihood of a sore back, stress makes it be perceived as more intense pain. Probably there is a dual mechanism: Stress can alter, increasing the perception of pain. Some data suggest that stress can cause increased muscle tone and facilitate the development of contractures, although the studies that have compared the electrical activity of muscle of stressed and unstressed patients have provided conflicting results.

- Dissatisfaction, increases the risk of back pain, and especially the episodes that last longer. Studies in the workplace reflect dissatisfaction with the job increases the risk of back pain and increases the period of leave. From the medical point of view, and apart from employment considerations, the mechanism that can explain their influence may be twofold: A mechanism similar to the stress. Somatization unaware of the dissatisfaction with life in the form of back pain.

Source: www.espalda.org/divulgativa/dolor/causas/factores.asp
image source: http://media.rd.com/rd/images/rdc/mag0707/chronic-back-pain-breakthroughs-01-af.jpg

In some studies, discomfort in bed has been associated with a risk of up to 1800% more back pain, both among adolescents as among adults, while most of the other factors studied (such as gender or physical effort at work or at leisure) have been associated with much less effect.

In addition, scientific studies have also shown that among people who already suffer from back pain, mattress firmness influences its evolution, so a medium firm mattress is recommended that a very firm. These data suggest that the surface characteristics of rest are a relevant factor in relation to the existence or development of back pain.

It is possible that this influence is due to several factors. If the characteristics of bed induce the adoption of poor posture while lying down, you can alter the burden-sharing in that position, affecting the muscles (by inducing its overhead or simply hinder their relaxation) or increasing the burden on intervertebral discs and facet joint.

Since this factor would act repeated and prolonged (estimated a subject spends approximately one third of your life in bed), medium or long term inadequate sleep in a bed could induce alterations in the structures. – Have experienced previous episodes of back pain is associated with an increased risk of back pain. Scientific studies show that once a patient has had an episode of back pain, is likely to return to have others in the future.

Some of the recommendations based on scientific evidence establishing that the majority of patients recurring painful crises from time to time, without necessarily meaning that they are getting worse or that they have become a back injury. This could be explained by several reasons: Those with a crisis often have one or several risk factors related to their lifestyle or characteristics. Unless special measures are taken, which is not always easy-change of habits, exercise etc .

It is likely that these risk factors continue to rise to new episodes. Studies show that back pain causes muscle contraction by a neurological mechanism, and that the muscle receives less blood flow while contracture. This may facilitate re-contracture in the future and provoke new crises of pain, especially if kept idle during the painful episode or from him.

On the contrary, maintain the highest level of physical activity as possible (as much when there is pain when it is not), improved risk and the state of the muscles, reducing the risk of the occurrence of back pain and improving its development when already have. Studies also show that if the back pain limits activity for some time the muscles will atrophy easily. Atrophy of muscles can make more vulnerable the column and make it difficult to adopt the correct postures, which in turn may increase the risk of new episodes of pain.

A neurological mechanism explains that if the cells perceive pain in the spinal and brain remain active for some time, increases the ease with which they are activated in the future, so that small stimuli can cause back pain. In fact, if their activation lasts long enough, tend to stay activated even disappears painful stimulus that initially triggered, in which case the pain persists even though their initial cause disappears.

Source: www.espalda.org/divulgativa/dolor/causas/factores.asp
image source: http://denvercoloradochiropractic.com/blog/wp-content/uploads/2009/06/back-pain1.jpg

If the muscles are very powerful, is injured before the intervertebral disc. In this case the pain caused by muscle injury, painful but benign and usually resolves itself in a few days, avoiding the effort to maintain and protect the intervertebral disc.

If the muscle is not strong enough, the intervertebral disc may be injured while the muscles. It is possible that the continuous repetition of efforts, though not terribly severe, can cause back pain, probably by the accumulation of small lesions in the intervertebral disc, facet joint or, more commonly, repeated overloading of the musculature.

Excessive strain does not always mean load weight: the adoption of awkward postures can overload the muscles or structures of the spine.

If the positions remain inadequate enough time or frequently recurring back pain can cause an overload mechanism is loaded but not weight. It is true that a particularly intense exertion and carried out without taking into account the postural hygiene, especially if it occurs in a movement of flexion and extension, can trigger a painful episode. However, this process typically does not make it normal.

Most commonly, back pain episodes occur without the effort has caused. Epidemiological studies show that back pain is more frequent among those who perform repeated intense efforts, especially if they are in positions of bending, twisting or rotation of the spine, or in cases where the muscle is insufficient.

- Vibration; is associated with increased risk of back pain. Epidemiological studies show that the vibration affecting the whole body increases the risk of back pain appear. That is the case, for example, tractors and machinery to handle this type.

Vibration is likely to trigger the pain of these mechanisms: Vibration entails rapid shortening and lengthening the muscles, which could facilitate its contracture. The vibration increases rapidly cyclic load on the intervertebral disc and facet joint. The vibration causes direct activation of pain nerves in the spinal ganglia.

- Lack of power, resistance training or back muscles, is associated with an increased risk of back pain and that pain will recur or become chronic. Studies have confirmed that back pain comes on more easily and persist longer in people who do not have a sufficiently powerful muscles, strong and trained.

Probably, this fact is explained by several mechanisms: If the muscles are strong and harmonious, the load distribution is correct and decreases the risk of contractures or muscle overload. The greater the power and muscular endurance, the greater the structural strength to the load.

Normally, the muscles begin to ache before the other structures of the back, so that warning of possible injury. If the muscle is very powerful, this mechanism does not work effectively. Normally, the muscles reports the position in space. When the muscle is poorly trained that source of information is faulty, so adopting bad posture without being conscious of it.

Source: www.espalda.org/divulgativa/dolor/causas/factores.asp
image source: http://southwestblend.com/Soft-Sell-Marketing/BACK_pAIN_PROCEDURE.jpg

As has been demonstrated that back pain is not always due to an organic disorder of the spine, have begun to study the factors associated with an increased risk of autism. We must be cautious in interpreting these studies show that back pain sufferers have some characteristics more often than non-sufferers. That means that these factors are associated with an increased risk, not necessarily to be the only cause of pain or that their removal improve it.

Despite this limitation, in those cases where you have to take into account factors rigorous epidemiological studies show that are associated with an increased risk of back pain, especially in cases in which the mechanism can be glimpsed explain their potential influence. Some of the factors that have been most studied are:

- Flexo-repetitive extension of the spine, is associated with increased risk of back pain.

On flexing the spine causes increased pressure within the intervertebral disc. If at that time weight bearing and re-straighten the spine, the pressure in the back of the disc which can increase both cracked or broke, causing a herniated disc. This process can occur once, if the effort is intense, but usually occurs by a mechanism of accumulation: each improper bending increases the impact of the nucleus in the fibrous disk and erodes until crack or break.

In addition to the disk, also the muscle is overloaded to keep leaning forward. That position is possible thanks essentially to maintain controlled tension of the paravertebral muscles, gluteal and hamstring, which prevents the body from falling forward. The larger the bending angle, the greater the effort required to perform the lumbar musculature and the lower the number of segments that do, making it easier to overload.

Mechanistic studies show that disc and muscle overload is greater if the inclination is done with straight legs, and lower when flexed knees and keeping your back straight.

In fact, epidemiological studies have shown that back pain is more frequent among those who perform repetitive motions of flexion and extension of the spine, especially if they are driving charge, if it is excessive or if your muscles are inadequate.

- Torque or frequent rotation of the spine is associated with increased risk of back pain. From the shape of the vertebrae, the cervical spine can rotate more than the back, and this more than the back. Probably exaggerated repetition of rotations in the lumbar spine can overload the facet joint and muscles, and even also the disk, especially if it is bearing weight.

In fact, epidemiological studies have shown that back pain is more frequent among those who perform repetitive motions of twisting or rotation of the spine, especially if they are driving charge, if it is excessive or if your muscles are inadequate.

Source: www.espalda.org/divulgativa/dolor/causas/factores.asp
image source http://wellnessconceptsclinic.com/yahoo_site_admin/assets/images/chronicback.695851_std.jpg

1. Activate a specific nerve fibers, known as Ad and C, or “sensitive to capsaicin” or “nerve pain” -.
2. Their activation triggers cause inflammation and pain and muscle spasm.
3. It is a vicious circle of inflammation and muscle contracture remain activated pain nerves.
4. There are scientific studies showing that if the activation of Ad-C fibers lasts long enough, are triggered biochemical mechanisms that may perpetuate their activation indefinitely. In this situation, the pain persists even disappear because originally triggered it.

The neurological mechanism that causes pain, inflammation and muscle contracture:

It can be triggered by any structural damage. For example, when a herniated disk nerves are activated are pain in the outer layers of the disk to come into contact with substances that are inside. In this case, an MRI scan would see the break of the fibrous and clarify the cause of pain.

But can also be triggered without structural damage. For example, maintaining a poor posture can overload a muscle group and cause contracture and exciting the nerves that innervate pain. If the patient’s musculature is inadequate or asymmetric, the overhead can be sustained for long or repeated periodically. In this case, no radiographic examination would see the injury causing the pain.

They are accepted causes of back pain:

* The cracks, protrusions or herniated disks when they allow contact between the nucleus pulposus with pain nerves located in the fibrous
* The significant degeneration of the facet joint ..
* The muscle spasms triggered by postural overload, stress or changes in the shape of the spine. In the latter case is included scoliosis over 60 degrees.
* The compression of a nerve root, for example by a herniated disk, spinal stenosis or spondylolisthesis grade III or IV.

Alterations in the structure of the spine

These are changes that can be detected by conventional radiology, computed tomography (CT or scanner) or magnetic resonance imaging (MRI). Formerly it was believed that his existence always caused pain and, conversely, the pain was almost always due to the existence of any of them. I really do not. Even when a patient with back pain have any of these changes, we must demonstrate that it really is the real cause of the pain before considering surgery to correct it. Many are incidental findings and the individuals who have back pain may have other reasons….

Lumbosacral transitional anomalies

* Scoliosis
* Hyperkyphosis
* Hyperlordosis
* Corrections
* Spondylolysis
* Spondylolisthesis
* Spinal Osteoarthritis
* Facet Osteoarthritis
* Spinal stenosis
* Fissure, protrusion and disc herniation
* Post-surgical fibrosis
* Dislocation of the coccyx
* Axoidea atlantoaxial dislocation
* Sprains
* Whiplash

Source: www.espalda.org/divulgativa/dolor/index.asp
image source: www.wholehealthamerica.com/drkazandjian/back-pain-921.jpg

How to Treat Back Pain?

To treat back pain have been proposed many treatments. Most have never been scientifically evaluated, and few of those who have been proved to be truly effective. Most are used simply because they have always used, without any scientific data proving their worth.

Some treatments are designed to treat episodes of pain and reduce the risk of suffering or accelerate the recovery of mobility.

Bases, Indications and Risks

* Patient information
* Hygiene postural
* Exercise
* Maintenance
* Bed rest
* Drugs
* Neuroreflexotherapy (NRT)
* Spine Surgery
* Surgery and Pain Unit
* Vertebral manipulation
* Cognitive Therapy multimodal
* Multidisciplinary Programs
* Epidural injections
* Facet
* Local infiltration and trigger points
* Infiltration into the disc (discography)
* Sacroiliac Injections
* Injections of botulinum toxin
* Prolotherapy (sclerosant Injections)
* Rhizolysis
* Corsets and lumbar belts
* Drives
* Physiotherapy (heat and cold, massage,
laser, short wave, magnetic, laser)
* TENS: transcutaneous electrical stimulation
* PENS: percutaneous electrical nerve
* Templates and increases
* Acupuncture

Source: www.espalda.org/divulgativa/dolor/index.asp
image source: www.dietsinreview.com/diet_column/wp-content/uploads/2009/02/back-pain.jpg

There are scientifically evaluated scales to objectively assess pain intensity and degree of disability that causes back pain.

To prevent and treat back pain should maintain the highest level of activity possible and avoid bed rest. Most cases are successfully treated with medication, neuroreflexotherapy or other non-surgical treatments. Surgery is indicated in a small number of cases and only when there are clear signs that guarantee its success.

Causes of Pain

Formerly it was believed that the pain appeared because there was some alteration of the structure of the spine, including scoliosis or herniated disc. That is a mistake.

Pain is a neurological mechanism involving activation of the nerves that transmit pain and the onset of muscle contraction and inflammation. Sometimes, it can also lead to nerve root compression.

This mechanism can be triggered by an alteration of the structure of the spine, including disc herniation or significant degeneration of the facet joint, but in most cases can not be reached to determine the initial cause that triggers it, and Contracture attributed to pain or muscle strain.

Source: www.espalda.org/divulgativa/dolor/index.asp
image source: www.topnews.in/health/files/back-pain.jpg

Basically, the back serves to:

1. Keep up the body and allow movement.
2. Contributing to maintain a stable center of gravity, both at rest and, above all in motion.
3. Protect the spinal cord in a wrapped stone.

In order to sustain the weight of the body, the back has to be solid. It is composed of very strong bones and muscles strong.

To allow movement, the spine has to be flexible. It is therefore not composed of a large bone but by 33 separate vertebrae, arranged one above the other and supported by a system of muscles and ligaments.

To help maintain a stable center of gravity, the contraction of muscles of the back acts as a counterweight compensates for the rest of the body. To do so, the muscles must be strong.

To protect the spinal cord, vertebrae have a special shape, a hole in its center through which runs the spinal cord.
The vertebral column

The human spine is made up of 33 vertebrae. The 7 cervical, 12 thoracic and 5 lumbar vertebrae are separated by intervertebral discs 23. The 5 sacral vertebrae are fused, as are the four coccygeal, forming the sacrum and coccyx bones.

Looking ahead, the vertebrae are perfectly aligned and form a vertical. However, in profile, forming curves. The upper cervical area-in-and lower-back-in concave back and are called cervical and lumbar lordosis, respectively. The mean curve is concave forward and is called kyphosis.

This provision allows the column to be resistant to the applied load in the vertical direction, as its curves give you flexibility. If the load is very important, the curvatures can transiently increase, lessening the pressure on the vertebrae. Therefore, it was traditional in some countries carry the load on the head. Moreover, in doing so kept the center of gravity in the axis of the column, so that the muscles of the back just had to work.

Source: www.espalda.org/divulgativa/como_es_funciona/comoes.asp
image source: www.bodystressrelease.co.uk/images/body.jpg

Causes and Risk Factors

So far no known cause of Aicardi syndrome. Some think that in some cases, is the result of a genetic defect on chromosome X. This disorder affects only girls and there are fewer than 500 cases worldwide.

Symptoms

Symptoms begin when the child is between three and five months of age. The condition causes infantile spasms (jerking), a type of childhood seizure. Other symptoms include mental retardation and lesions on the retina of the eye or the optic nerve.

Aicardi syndrome may be associated with other brain defects.

Other symptoms may include:

* Abnormal ribs or spine
* Eyes smaller than normal (microphthalmia)
* Other eye abnormalities such as coloboma (cat’s eye)
* Large differences in the size of the two halves of the brain

Signs and Tests

Children are diagnosed with Aicardi Syndrome if they meet the following criteria:

* Female sex (or XXY genotype male)
* Retinal damage
* Seizures typically beginning as infantile spasms
* Complete or partial absence of corpus callosum

However, in rare cases, you may not have one of the characteristics, especially lack of development of the corpus callosum. In such cases, the diagnosis is likely if you have two or more of the signs mentioned below:

* Abnormal formations in the brain, as microgyria (the brain are abnormally narrow)
* Subcortical and periventricular heterotopia (a misplacement of groups of neurons in the brain sometimes found in seizure disorders)
* Cysts in specific brain areas
* Non-cancerous benign tumor found in a specific part of the brain
* Optical disc or nerve coloboma

Tests to diagnose Aicardi Syndrome include:

* Eye Exam
* TAC head
* MRI
* EEG

You can perform other procedures and tests, depending on each individual.

Treatment

There is no standard treatment for Aicardi syndrome. Treatment involves managing seizures and any other health problems, as well as programs to assist the family and the child cope with delays in development.
Support Groups

Aicardi Syndrome Foundation: www.aicardisyndrome.org.

National Organization for Rare Disorders (NORD): www.rarediseases.org

Expectations (Prognosis)

The prognosis varies greatly depending on the severity of symptoms and what other conditions are present. Almost all children with this syndrome have severe learning difficulties and completely dependent on others, but few have some language abilities and some can walk independently or with assistance. The degree or level of vision varies from normal to blind.
Complications

Complications vary with the extent and severity of symptoms.
Situations requiring medical assistance

Call your doctor if a child has symptoms of Aicardi syndrome or seek emergency medical attention if an infant is having spasms or seizure.

Source: www.clinicadam.com/salud/5/001664.html
image source: www.eyeatlas.com/box/286aicardi.jpg