Friday, February 19, 2016

Wonder Woman: Hormone Tests Women for Fertility

 INTRODUCTION:
There is a hormone test used to read women's fertility called the 'Anti-Mullerian hormone' or 'egg timer' test. Anti-Mullerian hormone gives women a rough estimate of the number of eggs she will have for each month that are viable. Just not to be confused, this test provides women with the knowledge of how many eggs she has, however NOT the quality of her eggs. The results of this test help specialists and pathologists an idea of what drugs best qualifies for each and every women specifically. (A)
 
Anti-Mullerian hormone (or AMH) is produced by granulosa cells in ovarian follicles. Made in the primary follicles, where the follicles are microscopic and are unable to be seen with an ultrasound. AMH production is highest in the pre-antral and small antral stages of development. As the follicles grow, production of AMH decreases then eventually stops. Once the follicles reach over 8mm, there is no more production of AMH. Levels of AMH are constant and an AMH test can be performed on any day of the woman's cycle. (B)

Because AMH is produced in the small ovarian follicles, blood levels of this substance have been used to attempt to measure the size of the pool growing follicles in women. Research has shown that the size of the pool growing follicles are heavily influenced by the size of the pool of those remaining primordial follicles. Subsequently, AMH blood levels are used as a close estimate of the size of the remaining egg supply/ ovarian reserve. A Normal AMH level would be. There are some problems involved with interpretation of AMH hormone levels. Because the test has not been in routine use for many years, the levels considered to be "normal" are not yet clarified and agreed on by all experts. (B)

Ovarian Reserve Testing Methods: Anti mullerian hormone is one potential test of ovarian reserve. There are other tests that are currently used for evaluation of the remaining egg supply. None of the tests are perfect, and fertility specialists will often use a combination of tests to try to get a better estimate of the size of the remaining egg supply.( Note: Anti mullerian hormone has also been referred to (mostly in the past) as "mullerian inhibiting substance", or MIS.) (B)

As women age, the remaining microscopic follicles decreases, their blood AMH levels, and number of ovarian antral follicles visible on the ultrasound also decreases.  Women with high AMH hormone values and those that have few follicles remaining are close to menopause and have low AMH level.s Women with higher AMH levels respond better to ovarian stimulation for IVF and have more eggs retrieved. Having more eggs gives a higher success rate. (B)
For over a decade this test is responsible for inaccurate readings of women's fertility. Study from Australia told informed the public about this alarming news. However, fertility experts are saying not to panic because the Anti-Mullerian hormone test has been indeed taken off the market 3 years ago and hasn't been used since. This test has been replaced by much more accurate and updated versions. (A)

Within 'The Journal of Assisted Reproduction and Genetics' the fertility treatment organization Genea published their study of comparing the original test and protocol with the new revised test and protocol. The results showed that the original protocol underestimated fertility by an average of 68%. The Genea Study was the first to use natural conception levels to create an Anti-Mullerian reference range. (A)
RESEARCH:
The study involved 492 women whose analyzed Anti-Mullerian hormone levels showed that they were able to naturally conceive being of ages 20 to 44 years old. This group of women used the original and revised Gen II tests. The results showed and subsequently added to the existing evidence that the inaccuracies of the original test were in fact a reality. (A)

The VP of Fertility Society of Australia and professor of obstetrics and gynaecology at the University of NSW, Michael Chapman, states that, “However, I would say that Anti-Mullerian hormone test results should always be interpreted by a specialist, because it’s not a black-and-white test and should not be interpreted as such,” He assures women that the current methods of testing have been proven accurate to give stable results. Other factors are also considered beyond this test because fertility specialists will always get a few surprises of women's hormone levels here and there including their response to drugs given to them specifically for their hormone levels. (A)
CONCLUSION:
The Genea medical director, Professor Mark Bowman, strongly suggests that women, although the current tests are relatively stable with accurate readings, should always get expert input either through the pathologists and the interpretation of specialists so that the results they get does not shock or give them any unnecessary panic. (A)

LINKS:
(A)http://www.theguardian.com/society/2015/dec/18/womens-fertility-underestimated-by-68-in-highly-inaccurate-hormone-test
(B) http://www.advancedfertility.com/amh-fertility-test.htm


*These Images are NOT mine! They were found on various Tumblr sites~ If any are yours please let me know so that I can give you credit for them~ Thanks so much! Enjoy

Thursday, February 18, 2016

Throwback Thursday: Steve Jobs' 2005 Stanford Commencement Address

Florida Project: Stem Cell Provides Cure for Type 1 Diabetes

What is Type One Diabetes/ Juvenile Diabetes? : 
It is usually diagnosed in children and young adults. Only 5% of people with diabetes has this form. In Type One diabetes, the body does not produce insulin. The body breaks down the sugars and starches eaten into a simple sugar called glucose which is used for energy. Insulin is the hormone that the body needs to get glucose from the bloodstream to the cells of the body. Insulin treatment and other treatments are used to live long and healthy lives. (B) Living with T1D is a constant balancing act. People with T1D must regularly monitor their blood-sugar level, inject or continually infuse insulin through a pump, and carefully balance their insulin doses with eating and daily activities throughout the day and night.(C)

Type 1 diabetes (T1D) is an autoimmune disease in which a person’s pancreas stops producing insulin, a hormone people need to get energy from food. T1D strikes both children and adults at any age and suddenly. Its onset has nothing to do with diet or lifestyle. Though T1D’s causes are not yet entirely understood, scientists believe that both genetic factors and environmental triggers play a role. There is currently nothing you can do to prevent it, and there is no cure.(C) Scientists believe they may have moved a step closer to a cure for the type of diabetes that develops in childhood and usually leads to a lifetime of insulin injections.(A)
2016: The Possible Cure?:
Type 1 diabetes is usually diagnosed in children and young adults, and was previously known as juvenile diabetes. Only 5% of people with diabetes have this form of the disease.
In type 1 diabetes, the body does not produce insulin. The body breaks down the sugars and starches you eat into a simple sugar called glucose, which it uses for energy. Insulin is a hormone that the body needs to get glucose from the bloodstream into the cells of the body. With the help of insulin therapy and other treatments, even young children can learn to manage their condition and live long, healthy lives.
- See more at: http://www.diabetes.org/diabetes-basics/type-1/#sthash.DWtANr2q.dpuf
Type 1 diabetes is usually diagnosed in children and young adults, and was previously known as juvenile diabetes. Only 5% of people with diabetes have this form of the disease.
In type 1 diabetes, the body does not produce insulin. The body breaks down the sugars and starches you eat into a simple sugar called glucose, which it uses for energy. Insulin is a hormone that the body needs to get glucose from the bloodstream into the cells of the body. With the help of insulin therapy and other treatments, even young children can learn to manage their condition and live long, healthy lives.
- See more at: http://www.diabetes.org/diabetes-basics/type-1/#sthash.DWtANr2q.dpuf
By transplanting stem cells in mice with a 'reverse of the equivalent type 1 diabetes' allows for the replacement of cells in the pancreas which are damaged and therefore unable to produce insulin due to T1D. Without insulin, the body has difficulty absorbing sugars such as glucose from the blood. The disease usually first shows in childhood or early adulthood and used to be a killer, but glucose levels can now be monitored and regulated with insulin injections. These damaged B-cells (cells that normally produce insulin) are the prime targets of stem cell experiments. This is much more difficult than it sounds because Beta Cells/B-cells do not readily regenerate. (A)

Researchers in California reportin the 'Writing in the Journal Cell Stem Cell', Gladstone Institutes in San. Fran described how they collected skin cells known as fibroblasts from lab mice. They then treated the fibroblasts with unique cocktail of molecules and reprogramming factors. The cells were transformed into endoderm-like cells. These endoderm cells are found in the early stages of an embryo that eventually mature into the body's major organs (including the pancreas). (A) Another chemical cocktail was also used to transform the endoderm-like cells  into early pancreatic cells (aka: PPLCs). The initial goal was to coax PPLCs to mature into cells similar to B-cells to respond to the correct chemical signals and secrete insulin. Results of initial experiments which were performed on petri-dishes showed that they did do just that. (A)
The team then injected these cells into mice that had been genetically modified to have high glucose levels, mimicking the type 1 diabetes condition in humans. In just one week post-transplant the animals' glucose levels began to decrease approaching normal levels. Once the transplanted cells were removed there was an immediate spike in glucose levels. This showed the direct link between transplantation of PPLCs and reduced hyperglycemia (aka: high glucose levels). Two months post- transplant, the California researchers found that the pancreas like cells had turned into REAL fully functioning insulin secreting Beta cells had developed in the mice. These results show and prove that one day there might be a cure for type 1 diabetes in humans. (A)

Links:
(A)http://www.theguardian.com/society/2014/feb/06/scientists-closer-stem-cell-cure-type-1-diabetes
(C) http://jdrf.org/about/about-type-1-diabetes-t1d/

Frida Kahlo: Brain Surgery



INTRODUCTION:
Thanks to Karl Ove Knausgaard who, was inspired by the book 'Do No Harm' by British Neurosurgeon Henry Marsh, beautifully wrote an article for the New York Times called, "The Terrible Beauty of Brain Surgery" We now know of a new and rare form of brain cancer and the radical surgery to prolong patients’ lifespans. Located in Tirana, the capital city of Albania, 'Spitali Nene Teresa' is the hospital in which the operations are taking place.


Marsh studied philosophy, politics, and economics at Oxford University which gave him a keen interest in the Soviet Union. After the Cold War Ended, he began working pro bono at a neurosurgical ward in Kiev where conditions were primitive and appalling. The 2007 documentary, "the English Surgeon" showed some brutal operations where he worked. One operation where they used a Bosch drill (the kind you would buy at a hardware store) to open the skull. In another operation they used a wire saw that sent blood and dust flying. Marsh would send the surgeons medical equipment using his own car to load with instruments.(A)

Marsh went to Tirana to demonstrate a surgical procedure in which he helped pioneer. It was called, 'Awake Craniotomy'. This surgical technique is performed in patients with brain tumors in/near critical brain areas (i.e. motor or speech cortex also known as 'eloquent cortex') This procedure involves the removal of brain tumors such as gliomas and metastatic brain tumors. The patients are given 'asleep-awake-asleep' anesthesia. This means that the patient is sedated for the first part of the procedure when the neurosurgeon makes a small aperture in the patient's skull. At the critical phase during the tumor removal the patient is gently awakened. The brain areas around the tumor are then electrically stimulated.(C)
The patient is kept engaged by doctors asking him or her to read or answer simple questions while probing the exposed brain tissue with a mild current. If the stimulation inhibits or causes any form of hesitation in the patient’s performance that area is left alone. If the patient experiences confusion also indicates to the neurosurgeon to leave that specific area alone. The patients reactions are key to this operation as they assess as a neuro-monitoring technique or in other words a functional MRI (fMRI) to determine how much of the tumor can be removed. The patient goes back under sedation and the surgery is completed.(C) 

This procedure removes a kind of brain tumor that looks like the brain itself. These rare tumors are most common with younger patients of which there is no cure for. However, without 'Awake Craniotomy',  50% of the patients die within 5 years, and 80% within 10 years. The operation prolongs their lives by 10 to 20 or even sometimes more years.(A)
This type of surgery is used for a wide range of neurological problems such as epilepsy to an injury or an infection that lies within the brain. A craniotomy is usually preceded by an MRI scan. The surgeon can then use the resulting image to determine the best position and how much bone is needed to access the area of the brain with the specific problem. Although  functional MRI (fMRI) can show areas of the brain that are activated during speech and motion. There is a more accurate way in which results can be achieved which is through the mapping of these critical areas of the brain during brain surgery as the patient is awake. (B)
To distinguish between the tumor and healthy brain tissue, the patient is kept awake throughout the operation. During the procedure, the brain is stimulated with an electric probe so that the surgeon can see if and how the patient reacts. The team in Albania had been preparing for 6 months in which 2 cases were selected that were well suited to demonstrate the method.(A)

The procedure goes as follows; patient is put under anesthesia, his or her skull is then opened, skin and bone are moved aside to get access to the brain, then the patient is woken up carefully/gently, next a neuropsychologist engages the patient in conversation as a probe with mild electrical current is applied to the surface of the exposed brain. There is no pain for the patient because the brain has no pain receptors. If the patient's performance is hindered due to the probe stimulation the area stimulated is preserved.(B)
Marsh explained that as a neurosurgeon you are constantly tempted to remove the entire tumor, but if you go too far you remove too much and the consequences can be severe. These consequences may lead to full or partial paralysis of one side of the body or other functional impairments or personality changes. When the patient is awake, it allows for the surgeon to determine where the dividing line lies and to observe the consequences of the procedure directly and immediately and stop before any serious damage is done.(A)

In the Operating Room the patient's head is clamped down so no movement occurs when the operation is taking place. The upper part of the skull is removed. Inside, the pulsating brain can be seen. Monitors of the operating room show an enlarged image of the brain. In the middle, a pit had been scooped out. In the center of the pit was a white substance, shaped like a cube. The white cube, which appeared to be made of firmer stuff, was rubbery and looked like octopus flesh. It must be the tumor. When a patient has a tumor that is located near the region of the brain that controls motor and speech, a neurosurgeon may choose to perform the procedure while the patient is alert. (A)

If, when we are removing the tumor, you start to feel a little weak, then we’ll know that it’s time to stop. It is quite possible that after the operation there will be some weakness on your left side, but you almost certainly will get better. The risk of leaving you permanently paralyzed is not zero, but it is very small, less than 1 percent. I hope we can remove all of the tumor, but we might not, and you will need brain scans in the years to come. If there is no weakness after the operation, I hope you will be back to bricklaying in five or six weeks.(A)

The skull, now bare,  was then drilled making 3 holes. Next step was to cut from the first hole to the second then lastly to the third while blood and bone dust were being sucked away coming full circle. Then, the top of the skull which was cut in shape of a circle was taken out. Gently pulling the next flap like layer of the skull back, the brain is then exposed. The brain pulsated slowly. Then they would sew up the meninges back down.(A)

The operating team then has a limited amount of time, usually no more than two hours from the moment the skull is opened, during which to remove as much of the tumor as possible. The patient continues to talk and engage with doctors as the operation is performed. This process lessens the risk of cutting into the fibers that connect speech areas. When as much of the tumor as possible has been taken out, the patient is put back to sleep. The skull is then closed and the procedure completed.(B)

The sections of the skull that are removed vary in size, ranging from very small dime-sized pieces that are taken out in order to remove small tumors or drain blood clots to larger sections, called bone flaps, that are taken out to allow doctors to access the brain itself.(B) This step was to set the proper conditions for the second part of the operation for the next day. The whole process was reversed. They stitched the scalp back together. Since Albania is still a developing country with very poor and lack of resources, Marsh considered performing such an operation at such a high level to be a 'state of art'.(A)

The patient would be under general anesthesia, lying underneath blue surgical sheet with only the skull visible. Actual removal of the tumor would take place on the next day.  Under normal circumstances, Marsh would most often perform both steps in a single day however since this is a very new procedure within the Tirana Hospital, he would have to wait to finish til the second day. Operating Room the patient's head was clamped down but this time he was wide awake.  A small mapping device transmitted images of the brain upon the screen in which the image on the monitor would change as the position of the device changed. Before he began the operation, Marsh studied the monitor where the last brain scan was displayed.(A)
The stitches were removed. The scalp was then folded back showing a bare skull the lid was then removed and placed in a dish. Stitches in the meninges were then removed and the brain was once more exposed. The slightly pinker area of the exposed brain was the patient's tumor. Marsh explained that this specific area of the brain should be the sensory cortex. If he was wrong there will be movement.“In England, everyone would be lively and chatting away by now. Distraction is a good painkiller.” “Here the culture is different. It’s more vertical. In London, it’s horizontal. Ah, this churchlike silence!”(A)
At a strength of level 3 electricity was placed on the brain with a fork in which the patient felt a sensation in his face. When turning it up to level 5, the patient felt a sensation in the Left arm, face, and tongue. Marsh touched the brain again. However, this time the patient lifted his arm immediately into the air, it shook for a few seconds then laid back down. While they wheeled over the microscope, which was fastened by a mobile crane to a large machine, to which a monitor was also connected. Marsh bent over the microscope and began to operate.(A)

On a monitor, Marsh, could be seen digging a small hole within the tumor which looked identical to the surrounding brain tissue. With his left hand he made the blood congeal and with his right he used his suctioning device. He pulverized and remove tiny pieces of tissue, shred after shred. As the hole of the tumor grew, the stimulator was used once more but this time at level 8 until there was a reaction. The face, this time had a reaction. The center for facial movement, has to be left in peace insisted Marsh. Behind the innermost wall, seeming to swell out slightly, like a balloon about to burst was something purple. This walnutlike lump, composed of 100 billion brain cells so tiny and formed of human flesh.(A)

Marsh explained how they reached tumors that were lodged deep in the brain, which is, very loosely speaking, crumpled up like a sheet of paper, and therefore full of folds and ravines that you can push aside and move through. There are also so-called silent areas, which could be cut without damaging any of the brain’s functions. He told me about times when things had gone wrong, and the patient had died on the operating table in front of him. “I have killed people,” he said(A).

He 50 percent of surgery was visual, what you saw, and 50 percent was tactile, what you could touch. Brain surgery was a craft. To become good at it, you had to practice and sometimes make mistakes, in a profession where mistakes were fatal and impermissible. If your child has a brain tumor, you want the best surgeon. But to become the best, which is merely a question of gaining experience, you must first have operated on children without having experience. The particularities of operating on children is that their tissues are soft and very different from those of older people. A child is as fresh and clean on the inside as on the outside. However, the risks with children are greater because blood loss is very great with them.  The surgery is easy on the children because if they’re not in pain, they’re happy. (A)

CONCLUSION:
Tumors grew randomly, people died randomly, every day, everywhere. You could choose to keep this from sight behind numbers, behind statistics, behind the plastic drapes that made the patients faceless. His greatness was that he didn’t hide the smallness but instead used his insight into it to fight against everything that concealed it, the institutionalization of hospitals, the dehumanization of patients, all the rituals established by the medical profession to create distance and to turn the body into something abstract, general, a part of a system. Marsh had operated on an infant, only a few months old, and the operation went badly; the child died on the operating table. Marsh went in to see the parents in person. He told them that he had made a mistake, and that their child had died. He cried with them. “No doctor does that,” Fejzo had said. “No one.” (A)
LINKS:
(A) http://www.nytimes.com/2016/01/03/magazine/karl-ove-knausgaard-on-the-terrible-beauty-of-brain-surgery.html?_r=0
(B)http://www.pbs.org/pov/englishsurgeon/awake-brain-surgery/
(C) http://www.pacificneuroscienceinstitute.org/blog/brain-skull-base-tumors/the-evolution-of-awake-brain-surgery/
(D)http://movies.homeofthenutty.com/thumbnails.php?album=349

*These images are not mine! They were found on various tumblr sites- if any are yours please let me know so that I can give you credit! Thanks so much ~