Natural Killer Cells Nourish & Promote the Growth of The Fetus

A study published December 19th in the journal Immunity shows that part of the uterine Natural Killer cell population helps to optimize maternal nourishment of the fetus at early stages of development, not hinder it.  These Natural Killer Cells have actually been shown to secrete growth promoting factors that can also reverse impaired fetal growth and help prevent miscarriage, not cause it.

For many year now I have had people contact me and trying to kill the killer cells, or treat high natural killer cells, or wipe out these cells that they are being told is causing them to miscarry, or not be able to hold an embryo. For those same amount of years I always said that Natural Killer Cells are meant to be there and the reason they are there is because of inflammation and are doing their job. Now finally, what I have been saying has been proven to be true and now we have an explanation of what these immune cells actually do and the mechanism behind it. They don’t harm the embryo at all. They are there to protect it, nourish it and help it grow.

Natural killer cells are among the most abundant immune cells in the uterus during the first trimester of pregnancy, but their numbers decline substantially after the placenta forms. Up until recently many in the fertility profession have led people to believe that Natural Killer Cells are the cause of all their issues and these new findings may have them eating their words. Not only have women been offered hormones, steroids and the likes that have never been proven to do they say they do, but they not only have major side effects, but could actually be trying to regulate the very thing that is meant to help a pregnancy.

The results of these new findings not only reveal new properties of natural killer cells during early pregnancy, but also point to approaches for therapeutic administration of natural killer cells in order to reverse restricted nourishment within the uterine environment

Acting as our bodies’ frontline defense system, natural killer cells guard against tumors and launch attacks against infections. This is something that I have been trying to explain for years. If natural killer cells are in high amounts, they are there for a reason and that reason needs to be treated, not the high killer cells. There has been much research on how Uterine natural killer cells promote immune balance and the growth of blood vessels in the placenta, having a positive impact on birth weight as well as fetal growth. But until now, it was not clear which subset of natural killer cells in the uterus are responsible for promoting fetal growth, or whether these cells help to optimize fetal nourishment at early developmental stages.

In the new study it was discovered that a specific subset of natural killer cells in the human uterine lining secretes growth-promoting factors, which are involved in wide-ranging developmental processes. This subset of cells made up a smaller proportion of natural killer cells in the uterine lining of patients who experienced recurrent spontaneous miscarriage and reduced implantation (42%) compared to healthy females (81%). These findings suggest that insufficient secretion of growth-promoting factors by a specific subset of natural killer cells may be responsible for restricted fetal development in humans.

The studies also showed that a deficiency in this subset of natural killer cells resulted in severe fetal growth restriction and defective development of the fetal skeletal system. The studies also showed that the transfer of uterine natural killer cells reversed fetal growth impairments. For the purpose of promoting fetal growth in humans, it may be possible to transfer natural killer cells via intravenous infusion or the administration of a vaginal suppository to mothers, avoiding the need for invasive procedures. Moreover, uterus-like natural killer cells are a much safer alternative to many of the methods used in immunotherapy and safer that steroids, or other immunosuppressant’s.

Obviously more study is needed, but these findings are about to turn part of the fertility profession upside down and make it re-evaluate itself

I’ve always said it isn’t the natural killer cells killing off embryos and always said it was from inflammation and inflammatory gynaecological conditions that weren’t being treated. We now know that stress uterine cells are also a big part of the issue too. I always say treat the cause to treat the symptoms and now we know that Natural Killer cells aren’t part of the cause, they are actually there to help.

If you are having troubles not conceiving, or having troubles with miscarriage, it might be time to book in and be a part of my fertility program that has helped over 12,500 babies into the world

Take care

Regards

Dr Andrew Orr

Reproductive Medicine & Women’s Health Medicine Specialist

-The International Baby Maker

-No Stone Left Unturned

 

Stressed Uterine Cells & Inflammation Cause Miscarriage, Not Natural Killer Cells

It is stressed uterine cells and inflammation causing miscarriage and causing the embryo not to implant, not Uterine Natural Killer cells.

For the first time the functions of natural killer cells in the womb have been identified by Researchers at the University of Warwick and University Hospitals Coventry

Although it has long been known that the lining of the womb harbours dynamic uterine natural killer cells, no functions have so far been given to these cells outside of pregnancy.

The researchers have discovered that the uterine natural killer cells remodel and refresh the lining of the womb at the time of embryo implantation. This is the first time a role for uterine natural killer cells in the lining of the womb has been identified outside of pregnancy. The research was published on December 14, 2017.

In addition they discovered that this process isn’t always balanced in each cycle. The natural killer cells perform the role of targeting and clearing inflammatory stressed cells, thereby making space for the implanting embryo. However sometimes not enough of these cells are cleared away and sometimes too many are targeted and removed. Excessive inflammation or insufficient clearance by uterine natural killer cells makes miscarriage more likely.

For many years I have been trying to tell people that they need to stop trying to get rid of the natural killer cells, or reduce their numbers. I have long known that natural killer cells are meant to be in the body and their job is to protect us from infections, bacteria, cancers, tumours and inflammation. If killer cells are in high numbers, it means that there is something wrong and that is what needs to be treated, not the killer cells. But unfortunately, many clinics play on couples emotions and the use of the word “Killer”. So then we get this war on killer cells and people wanting to kill the killer cells because they think it is killing their babies. No matter how hard I have tried to explain it, people just don’t listen and now it is finally great to have the research to back up what I knew all along, plus additional knowledge of how Killer cells actually help with implantation and reducing miscarriage.

The researchers have explained what happens if the natural killer cells cannot do their job properly, or there is inflammation that they haven’t been able to target. They said that a good analogy is Swiss cheese: without holes, the embryo has nowhere to go which will cause implantation failure; but if the holes are too large, the tissue will physically collapse and lead to miscarriage. This imbalance, which may be short-lived or last for multiple cycles, explains the high rate of early pregnancy failure. It really can be a numbers game on how long that cycle could last and why it is important to make sure there are enough natural killer cells there to do their job properly. Without the natural killer cells, there is more chance of inflammation and stressed uterine cells being left behind, which will then lead to higher pregnancy loss and reduced implantation.

The researchers conducted an analysis of 2,111 endometrial biopsies, which is more than had ever been conducted previously. The research team examined the acutely stressed cells in the lining of the womb which generate tissue inflammation. They found that the natural killer cells which are in the womb perform the important function of selectively targeting and eliminating acutely stressed cells.

When there are high acutely stressed cells in the lining of the uterus, the lining of the uterus fails to sense the chemical signals from the fertilised egg and it then silences many of the genes involved in allowing the embryo to implant and embed into the uterus.

One of the chemicals needed for this process to take place is Trysin, which is a common enzyme the embryos gives off. If trysin isn’t detected the embryo is not accepted and left to disintegrate and then the cycle is reset once again. The lack of Trysin signal appears to indicate to the endometrium that the quality of the embryo is not very high and initiates a reduction of receptivity to implantation. These findings could help to improve the success rates of IVF, because one of the biggest problems with IVF is getting the embryo to implant

The research team also found that high numbers of Natural Killer cells in the endometrium are not only a sign of high inflammation and acutely stressed uterine cells, but also indicate a insufficient production of steroids, which in turn leads to reduced formation of fats and vitamins that are essential for pregnancy nutrition.

Again, this is exactly what I have been trying to say for years and why when I treat women who are having implantation issues and recurrent miscarriage I look at treating the cause of the issue, rather than masking it.

To treat miscarriage and help with embryo implantation you need to do the following

  1. Reduce inflammation in the uterine environment and pelvic cavity
  2. Make sure the pelvis, tubes and uterus have been surgically evaluated properly prior to conception, or assisted reproduction (IVF, IUI, ICSI etc)
  3. Increase blood flow and nutrients into the uterine lining
  4. Ensure adequate essential fats and nutrients are given prior to conception
  5. Reduce stress levels
  6. Increase protein and reduce inflammatory refined carbohydrates
  7. Make sure the couple in are optimum health (healthy sperm + healthy eggs=health baby)
  8. Make sure the man is being treated at the same time the woman is (up to 85% of miscarriage issues are related to chromosomal and DNA factors related to poor quality sperm, which cannot be measured by a normal semen analysis)

We need to stop blaming high NK cells as being the cause of miscarriage and embryos not implanting. We need to look at the real cause, which is inflammation, stressed uterine cells ( due to stress in the person), lack of nutrients and blood flow in the uterus and lifestyle factors that is also leading to increase miscarriage rates and reduced embryo implantation. This is why I have my own range of fertility formulas to assist the uterine environment and help with implantation.

Let’s not forget that faulty sperm and DNA damage and chromosomal issues with sperm are also a big part of miscarriage too. Miscarriage is not just a woman’s issue. To be honest, statistically it is more likely to be on the male side of the equation and often gets overlooked. But that is a whole other post in itself.

This is why I offer a comprehensive fertility program that looks at every aspect of the couple and every aspect of fertility. It is also why I have helped over 12,500 babies into the world. It is about my motto of “No Stone Left Unturned” and treating the cause of people’s issues, not just guessing and trying to treat the symptoms as you go along.

Hopefully in the future this new information will be used to screen women at risk of reproductive failure and help with new treatment options for women suffering recurrent miscarriages or recurrent IVF failure.

If you are having trouble conceiving and want answers to your fertility issues, then maybe it is time to book into my fertility program and get some real answers, real treatment and get the baby you so desperately deserve.

Regards

Dr Andrew Orr

Reproductive Medicine & Women’s Health Medicine Specialist

-The International Baby Maker

-No Stone Left Unturned

What is Implantation Bleeding?


Implantation bleeding: Causes and symptoms

Implantation bleeding occurs when a fertilized egg attaches to the lining of a woman’s uterus to start the growth process of pregnancy. Some women’s lining can be more affected and be more prone to bleeding during a pregnancy. It is a normal occurrence in pregnant women, yet many women are completely unaware of what it is. Obviously it can be a bit worrying for anyone when they are bleeding during a pregnancy and I will discuss this later.

Some women may confuse the bleeding with spotting from menstruation, as the two can appear similar. What women also need to know is that getting a menstrual cycle, or the appearance of what looks like a menstrual bleed, does not mean you aren’t pregnant. You can have a bleed and still be pregnant.

Usually when it is implantation bleeding. The bleeding is very light and will usually require no medical attention. In some cases, however, implantation bleeding may require a visit to your specialist, midwife, or healthcare provider

What is implantation bleeding?

Implantation bleeding can just before the expected menstrual cycle, or around the early stages of pregnancy. It can also happen again when the embryos is growing and impacting on the lining of the uterus.  Again this is a normal part of pregnancy for many women. Some women may not get any bleeding, or signs of implantation either.

The process of implantation starts  shortly are fertilization. Once a sperm has fertilized an egg, it is called an embryo. The embryo travels through the fallopian tube towards the uterus. During this time, the embryo multiplies, becoming a blastocyst, which usually takes about 5-6 days to reach this stage. About 1-2 days after an embryo reaches blastocyst stage, it will then attach itself in the wall of the uterus and this is called implantation. During this implantation stage, the embryo can cause disruption the uterine wall and this then cause what we know as implantation bleeding. As the embryo grows even bigger, it can then cause further bleeding later on in the first trimester as well. While this is considered normal, it can cause distress for women and any bleeding should be checked by your healthcare provider.

Signs and symptoms

Implantation bleeding is one of the earliest easily identifiable signs of pregnancy. It is also a normal part of pregnancy and all women should be aware of this. As explained before, women can still have a normal menstrual bleed and still be pregnant. It is usually a lighter bleed, but some women can actually have quite heavy bleeds and still maintain a pregnancy. About 1 in 4 women actually have a bleed during their pregnancy.

Despite all that, there are some distinct signs and symptoms to help women identify implantation bleeding:

  • Early bleeding: Implantation bleeding will often occur a few days before the expected menstruation cycle. This is not always the case, however, and many women confuse the two. As discussed, it is not uncommon for women to actually get their normal menstrual bleed and still be pregnant. Never think that just because you get a period, that you cannot be pregnant.
  • Unusual coloured bleeding, or discharge: Implantation bleeding produces an unusual discharge that varies in colour from pinkish to very dark brown or black.
  • Very light bleeding: Bleeding and discharge caused by implantation will usually not last no more than about 24 hours. It can last a bit longer for some women though. Many women experience just a few hours of spotting or one spot or streak of discharge. Obviously any bleeding should still be checked by your healthcare provider.
  • Cramping: Implantation can also cause mild and temporary cramps. Some women who are doing IVF may also be on progesterone gels that can also cause bleeding and cramping too. Cramping and bleeding does not always mean a miscarriage. If you do experience this and are worried, please always consult with your healthcare provider.

Other signs

As implantation is an early sign of pregnancy, a woman may also experience other pregnancy-related symptoms. Early signs of pregnancy can vary from woman to woman and may include:

  • Mood swings
  • Fatigue and tiredness
  • Dizziness
  • Headaches and Migraine’s
  • Tender, swollen breasts
  • Nausea and vomiting
  • Changes to the bowels (constipation, or loose bowels)
  • Heightened sense of smell
  • Food cravings and aversions
  • Increased body temperature

Treating implantation bleeding

Implantation bleeding is a normal sign of pregnancy and is not usually dangerous. Because of this, there is no need for treatment. As I have stated before, if you are unsure, you should always consult with your healthcare provider.

Bleeding caused by implantation usually clears up within a couple of days with no treatment necessary. Abnormally heavy bleeding may be a sign of menstruation or a pregnancy complication. As I have previously shared, some women who are doing IVF, may be on progesterone gels and other medications, which may also cause some bleeding and cramping. Some women with signs of abnormal bleeding may need the same medications to help with hormonal levels. Some bleeding could be a sign of something more serious so please consult your healthcare provider. If you are experiencing heavy bleeding along with pain, please present to your nearest emergency centre as this may be signs of a miscarriage, or ectopic pregnancy.

Complications of implantation bleeding

Implantation bleeding is not usually a cause for concern most of the time. It is just a sign of embryo implanting into the lining of the uterus.

Women who are still uncertain about whether they have experienced implantation bleeding should consult their healthcare provider and take a blood test to see if they are pregnant, or not. Please do not rely on home pregnancy tests as these can be inaccurate in the early stages of pregnancy. The most accurate way to determine pregnancy is to do a blood test. This is very important for women undergoing IVF treatment too. Too often women will do a home pregnancy test and think they are not pregnant, when in fact they are. The issue is that the home pregnancy tests won’t pick up pregnancy hormone in the urine if it is too early. This can cause a woman much distress at the time and then when she finds out later on through the blood test, that she is actually pregnant. Please never rely on urine based home pregnancy tests.

Please note that if you experiencing heavy bleeding during any stage of pregnancy that this can be a sign of a complication and women should seek medical attention.

If you need help with irregular bleeding, miscarriage, fertility, pregnancy or any advice for Women’s health issues, please call my staff and they will be able to let you know what consultation, or program is best suited for you. Please call my clinic on +61 07 3832 8369

 

Regards

Dr Andrew Orr

Reproductive Medicine & Women’s Health Specialist

-The International Baby Maker

-Women’s and Men’s Health Crusader

“No Stone Left Unturned”