Research

New relief for gynecological disorders

The creation of new blood vessels in the body, called "angiogenesis," is usually discussed in connection with healing wounds and tumors. But it's also an ongoing process in the female reproductive tract, where the growth and breaking of blood vessels is a normal part of the menstrual cycle. But abnormal growth of blood vessels can have painful consequences and resultant pathologies.

Now, Prof. Ruth Shalgi and research associate Dr. Dana Chuderland of Tel Aviv University's Sackler Faculty of Medicine have found a potential treatment for this abnormal growth in a potent physiological anti-angiogentic factor, PEDF. Administered by simple injection, this protein reverses the symptoms of related diseases without compromising fertility, according to pre-clinical studies.

These new findings, which have been reported in the Journal of Clinical Endocrinology and Metabolism, Human Reproduction, and Molecular Human Reproduction, could provide relief for millions of women worldwide. This work was done in collaboration with Prof. Rafael Ron-El and Dr. Ido Ben-Ami from Assaf Harofeh Hospital.

Dangers of angiogenesis
There are two primary pathologies associated with angiogenesis in the female reproductive system. One is endometriosis, characterized by the passage of uterine cells to other locations in the body during menstruation, which causes severe pain and reduced fertility. The other is ovarian hyperstimulation syndrome (OHSS), a possible side effect of IVF treatments. This is a potentially life-threatening disease with symptoms including abdominal pain and swelling.

Approximately 170 million women suffer from endometriosis worldwide, and about 10 percent of women receiving IVF treatment develop OHSS. Because no treatment currently exists for either of these conditions, affected women have no choice but to suffer through the symptoms.

In the past few decades, scientists have conducted extensive research on both pro-angiogenic factors such as VEGF and anti-angiogenic factors including PEDF. The effect of PEDF in decreasing abnormal angiogenesis has been extensively investigated in the eye and in tumors. Prof. Shalgi and Dr. Chuderland hypothesized that the same protein could play a role in diseases of the female reproductive system related to blood vessels growth.

In both OHSS and endometriosis, rampant VEGF levels allow for the abnormal vascularization that characterises both diseases. To counteract this effect and restore a healthy angiogenic balance in the reproductive system, the researchers turned to PEDF as a replacement therapy agent. In the lab, Prof. Shalgi and Dr. Chuderland developed mouse models of both endometriosis and OHSS. After preparing the PEDF protein, they injected the mice with it.

The researchers noted a "perfect reversal" of all symptoms, including reduced abdominal swelling in OHSS-induced mice and eradicated lesions in endometriosis. When evaluating whether this protein might affect fertility, they confirmed that PEDF had no negative impact on ovulation or pregnancy rate. In fact, it increased the number of ovulated eggs in the endometriosis model, suggesting improved fertility.

Easing the pain
The next step is to commercialize the protein for therapeutic use, say the researchers, who were the first to prove that this anti-angiogenic protein is active in the reproductive system. This discovery has been patent protected and is currently undergoing commercialization by Ramot, the technology transfer company of TAU.

There are currently no treatment options for women suffering from these diseases, explains Dr. Chunderland, who believes that endometriosis, in particular, is under-diagnosed and usually dismissed as severe menstrual pain. This new treatment could bring long-awaited relief from painful and seemingly uncontrollable symptoms, including severe abdominal pain and infertility issues.

Endometriosis has a negative impact on eggs' quality; 30 percent of women with this disease require fertility treatments in order to conceive, say the researchers. Women who develop OHSS have a lower chance of conception and a higher chance of miscarriage during their IVF treatment cycles. If these diseases could be eradicated, it would ease the sometimes difficult road towards conception, they suggest.

Most Popular Now

Bristol-Myers Squibb and Pfizer ann…

Bristol-Myers Squibb Company (NYSE: BMY) and Pfizer Inc. (NYSE: PFE) announced today that 17 abstracts will be presented at the American College of Cardiology's 65th Annu...

Read more

Brilinta preferred over clopidogrel…

AstraZeneca today confirmed that the American College of Cardiology (ACC) and American Heart Association (AHA) have released a treatment guideline on the duration of dual...

Read more

NIH launches large clinical trials …

Enrollment has begun in the first of two multinational clinical trials of an intravenously delivered investigational antibody for preventing HIV infection. Known as the A...

Read more

Pandemic influenza vaccine receives…

AstraZeneca and its global biologics research and development arm, MedImmune, today announced that the Committee for Medicinal Products for Human Use (CHMP) of the Europe...

Read more

Vitamin D improves heart function, …

A daily dose of vitamin D3 improves heart function in people with chronic heart failure, a five-year University of Leeds research project has found. Dr Klaus Witte, from ...

Read more

Saxenda® demonstrated significant i…

Today, new data from the three-year part of the phase 3a SCALE™ (Satiety and Clinical Adiposity - Liraglutide Evidence) Obesity and Prediabetes trial were presented at th...

Read more

AstraZeneca and Eli Lilly and Compa…

AstraZeneca and Eli Lilly and Company today announced that AMARANTH, a Phase II/III study of AZD3293, an oral beta secretase cleaving enzyme (BACE) inhibitor currently in...

Read more

World's first public dengue immuniz…

Sanofi and its vaccines global business unit Sanofi Pasteur announced today that the first public dengue immunization program has started in the Philippines. At a major l...

Read more

New hope for a type 2 diabetes cure

The cancer treatment drug Imatinib, otherwise known as Gleevec is approved to treat various forms of cancer, mostly notably chronic myeloid leukemia (CML). However, resea...

Read more

New insights in cancer therapy from…

Researchers in the group of Prof. Dr. Peter Vandenabeele (VIB/UGent) show that killed tumour cells can serve as a potent vaccine that stimulates the immune system to prev...

Read more

Pfizer announces termination of pro…

Pfizer Inc. (NYSE: PFE) announced that the merger agreement between Pfizer and Allergan plc (NYSE: AGN) has been terminated by mutual agreement of the companies. The deci...

Read more

Researchers open the way to new tre…

In a recent paper published in Nature Communications, a group of Case Western University School of Medicine researchers presented their discovery of the full-length struc...

Read more

Digest World Pharma Newsletter

Subscribe to our weekly Digest World Pharma Newsletter and stay updated on the latest World Pharma News. Subscribe now, it's free!

Pharmaceutical Companies

[ A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Z ]