luni, 16 ianuarie 2012

Dietary DHA Linked To Male Fertility

Main Category: Fertility
Also Included In: Men's health
Article Date: 11 Jan 2012 - 2:00 PST

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Who knew that male fertility depends on sperm-cell architecture? A University of Illinois study reports that a certain omega-3 fatty acid is necessary to construct the arch that turns a round, immature sperm cell into a pointy-headed super swimmer with an extra long tail.

"Normal sperm cells contain an arc-like structure called the acrosome that is critical in fertilization because it houses, organizes, and concentrates a variety of enzymes that sperm use to penetrate an egg," said Manabu Nakamura, a U of I associate professor of biochemical and molecular nutrition.

The study shows for the first time that docosahexaenoic acid (DHA) is essential in fusing the building blocks of the acrosome together. "Without DHA, this vital structure doesn't form and sperm cells don't work," said Timothy Abbott, a doctoral student who co-authored the study.

Men concerned about their fertility may wonder what foods contain DHA. Marine fish, such as salmon or tuna, are excellent sources of this omega-3 fatty acid.

The scientists became intrigued with DHA's role in creating healthy sperm when they experimented with "knockout" mice that lack a gene essential to its synthesis. "We looked at sperm count, shape, and motility, and tested the breeding success rate. The male mice that lacked DHA were basically infertile," Nakamura said.

But when DHA was introduced into the mice's diet, fertility was completely restored. "It was very striking. When we fed the mice DHA, all these abnormalities were prevented," he said.

The scientists then used confocal laser scanning (3D) microscopy to look at thin slices of tissue in progressive stages of a sperm cell's development. By labeling enzymes with fluorescence, they could track their location in a cell.

"We could see that the acrosome is constructed when small vesicles containing enzymes fuse together in an arc. But that fusion doesn't happen without DHA," he said.

In the absence of DHA, the vesicles are formed but they don't come together to make the arch that is so important in sperm cell structure, he noted.

Nakamura finds the role this omega-3 fatty acid plays in membrane fusion particularly exciting. Because DHA is abundant in specific tissues, including the brain and the retina as well as the testes, the scientists believe their research findings could also impact research relating to brain function and vision.

"It's logical to hypothesize that DHA is involved in vesicle fusion elsewhere in the body, and because the brain contains so much of it, we wonder if deficiencies could play a role, for example, in the development of dementia. Any communication between neurons in the brain involves vesicle fusion," he noted.

The Illinois scientists will continue to study sperm; meanwhile, Nakamura has sent some of his DHA-deficient knockout mice to other laboratories where scientists are studying DHA function in the brain and the retina.

Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
Visit our fertility section for the latest news on this subject. The study was published in a recent issue of Biology of Reproduction. Co-authors are Manuel Roqueta-Rivera, Timothy L. Abbott, Mayandi Sivaguru, and Rex A. Hess, all of the U of I. The work was supported in part by a CONACyT Mexico fellowship award.
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Young Female Cancer Survivors Express Their Concerns And Frustrations About The Impact Of Their Disease, Treatment, Future Fertility

Main Category: Fertility
Also Included In: Women's Health / Gynecology;  Cancer / Oncology
Article Date: 11 Jan 2012 - 0:00 PST

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Young female cancer survivors are concerned about their future fertility and parenthood options and want better information and guidance early on, according to a new study by Jessica Gorman and her team from the University of California in the US. Their paper, which presents in-depth information on young survivors' experiences navigating decisions about fertility and parenthood, is published online in Springer's Journal of Cancer Survivorship.

Many more adolescents and young adults are surviving their disease, resulting in a substantial and growing number of female cancer survivors of reproductive age. Young cancer survivors are less likely to have biological children than non-cancer survivors, mainly due to the effects of cancer treatments on future fertility. However, many are unaware of the impact of their treatment on their fertility, and understanding these young ladies' concerns is a first step towards developing effective, targeted interventions that will meet the needs of those who want to become parents.

The researchers explored the fertility and parenthood concerns of 22 American female cancer survivors, aged between 18 and 34 years. The young women, recruited from both clinics and community-based outreach projects, took part in focus groups.

The authors identified six themes from the discussions: A hopeful but worried approach to fertility and parenthood: While participants expressed hope about having a family, many also felt anxious that they would be unable to have their own children. Frustration with lack of choice or control over fertility: Even though the young women acknowledged that a discussion about fertility at the time of diagnosis would have been overwhelming, they felt strongly that they (or their parents) should have been told about both the impact of treatment on their fertility, and the options available before treatment to preserve fertility e.g. freezing eggs. Young survivors want information about their fertility: Several women reported with regret that their doctors had not talked to them about fertility and they felt that a young woman was old enough to have this discussion anytime after puberty. Young survivors want better continuity of care in survivorship: Many were frustrated with the poor coordination of care between their multiple medical providers, including care related to fertility and pregnancy planning. They felt that each practitioner focused on his or her specialist issue, rather than the bigger picture. Cancer diagnosis and related fertility problems introduce relationship challenges: Young women were concerned about this both in the early stages of a relationship and in a more stable relationship. Decisions about parenthood are complicated: Participants listed both emotional (worry about their personal health and life expectancy, as well as worry about their potential child's health) and practical (mainly financial) barriers to parenthood. Gorman and team conclude; "It's critical for both researchers and clinicians to understand young female survivors' concerns about fertility and parenthood in order to address them adequately. Our results suggest that these young women would benefit from improved information regarding their options, through discussions initiated by their healthcare providers, better coordination of care in survivorship, and guidance and support in navigating both emotional and practical issues that arise when considering fertility and future parenthood." Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
Visit our fertility section for the latest news on this subject. Gorman JR et al (2011). How do you feel about fertility and parenthood? The voices of young female cancer survivors. Journal of Cancer Survivorship. DOI 10.1007/s11764-011-0211-9
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Traditional Chinese Medicine Makes Fertility Treatments Far More Effective, TAU Researchers Discover

Main Category: Fertility
Also Included In: Women's Health / Gynecology;  Complementary Medicine / Alternative Medicine;  Pregnancy / Obstetrics
Article Date: 11 Jan 2012 - 1:00 PST

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Traditional Chinese medicine has long been used to ease pain, treat disease, boost fertility, and prevent miscarriage. Known in the Western medical community by its acronym TCM, these traditional remedies include herbal preparations and acupuncture. Now Tel Aviv University researchers have discovered that a combination of TCM therapy and intrauterine insemination (IUI) is a winning solution for hopeful mommies who are having trouble conceiving.

In the first study that measures the effectiveness of both herbs and acupuncture in combination with IUI infertility treatment, Dr. Shahar Lev-Ari and Keren Sela of TAU's Sackler Faculty of Medicine and the Tel Aviv Medical Center say that the results, which have been published in the Journal of Integrative Medicine, show a significant increase in fertility when the therapies are administered side-by-side.

When combining IUI with TCM treatments, 65.5 percent of the test group were able to conceive, compared with 39.4 percent of the control group, who received no herbal or acupuncture therapy. The method is as "close to nature" as possible and can be used by women employing sperm donors, or after a partner's sperm is centrifuged to enhance its motility in the uterus.

Age-old therapies, contemporary medicine

Dr. Lev-Ari, a cellular biologist and head of the integrative medicine unit, works with both medical doctors and TCM practitioners at Tel Aviv Medical Center's Fertility Research Institute. He and Sela, a TCM practitioner specializing in women's health, have long been interested in how Chinese herbal and acupuncture therapies could work to boost Western-style fertility treatments, contributing to an increase in conception and take-home baby rates.

In a retrospective study, Dr. Lev-Ari and Sela followed the progress of 29 women between the ages of 30 and 45 who were receiving IUI treatment combined with TCM therapy, and compared their results to a control group of 94 women between the ages of 28 and 46 who were undergoing IUI treatment alone. In addition to their IUI treatments, the 29 women in the first group received weekly sessions of acupuncture and a regime of Chinese medicinals, which consisted of powdered or raw Chinese herbs such as PeoniaAlbae and Chuanxiong, designed to meet each woman's specific needs. All herbal preparations were approved by the Israeli Health Ministry.

In terms of both conception and take-home baby rates, the test group fared far better than the control group. Out of the 29 women in the test group, 65.5 percent conceived, and 41.4 percent delivered healthy babies. In the control group, only 39.4 percent conceived and 26.9 percent delivered. The vast difference in success rates is even more surprising when the age of the average participant was taken into account, Dr. Lev-Ari and Sela note. "The average age of the women in the study group was 39.4, while that of the control group was 37.1. Normally, the older the mother, the lower the pregnancy and delivery rates," they explain.

Promoting balance and harmony in the womb

According to the researchers, TCM is aimed at correcting imbalances in the body's natural energy flow, promoting an overall sense of well-being. There are several theories as to why Chinese medicine can be beneficial to fertility rates, including the possibility that herbal remedies and acupuncture can affect the ovulation and menstrual cycle, enhance blood flow to the uterus, and enhance endorphin production and secretion to inhibit the central nervous system and induce calm - all of which can contribute to successful conception.

Now that the researchers have established that TCM can have a major impact on the success of fertility treatments, they plan to design randomized clinical trials, including placebos, to further validate their initial findings.

Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
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joi, 8 decembrie 2011

Laparoscopic Excision Surgery For Endometriosis Frees Patients From Chronic Pain And Complications

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Main Category: Women's Health / Gynecology
Also Included In: Fertility;  Pain / Anesthetics
Article Date: 31 Oct 2011 - 8:00 PDT

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Almost 10 million American women of childbearing age are affected by chronic pelvic pain, gastrointestinal and urinary tract difficulties and infertility due to endometriosis, a strange condition, in which cells normally forming the lining of the uterus (endometrium) start colonizing other organs and tissues beyond the uterus. This year's annual meeting of gynecologic laparoscopic surgeons explores endometriosis from both the patient's and the physician's perspective in a Keynote session (8:00 to 10:00 AM Tuesday, November 8) at the 40th AAGL Global Congress of Minimally Invasive Gynecology that takes place from November 6 to 11, at the Westin Diplomat in Hollywood, FL.

Keynote speaker and women's health advocate Padma Lakshmi, an international supermodel and TV show host, who co-founded the Endometriosis Foundation of America to encourage research to help other women to avoid her ordeal, declares: "Endometriosis is one of the most treatable, but least treated of women's health problems. Like me, many women suffer debilitating pain and other symptoms for as long as a decade before receiving an accurate diagnosis and proper treatment."

Many women suffer silently or use painkillers, sometimes for years. Because pelvic pain can have many different causes, including appendicitis, bowel obstruction, ovarian cysts, pelvic inflammatory disease, diverticulitis, ectopic pregnancy, fibroids, IBS and many others, correct treatment can often be delayed further, as endometriosis is sometimes not immediately diagnosed.

For example, in women with endometriosis on the intestines, symptoms may prompt a physician to suggest GI tests, which will not reveal the true problem.

Lakshmi continues saying: "If a woman wants to have children, it's critical to get an accurate diagnosis and treatment as soon as possible. Endometriosis is one of the top three causes of infertility. Many women are delaying childbearing into their 30s and even 40s these days, but if you have had untreated endometriosis for many years, it may be too late. And that is a real tragedy."

The currently most effective treatment is laparoscopic excision surgery as alternative medical therapies for endometriosis are extremely limited.

Although the cause of endometriosis is unknown, researchers suspect a strong genetic component, as daughters of women suffering from the condition have a seven times higher risk of developing the disease themselves. During the AAGL meeting, members will present research on abnormal expression of Homeobox (HOX) genes (2:45 PM, Tuesday, November 8) in both the uterine lining and in the lesions of women with endometriosis. Homeobox genes play a major part in cancer and infertility. A better understanding of these genes could explain how and why endometriosis develops.

According to Linda G. Griffith, PhD, Director of the Center for Gynepathology Research at the Massachusetts Institute of Technology, who attempts to replicate human tissue as a research model for endometriosis in her lab, the disease probably has many causes, just as it has many manifestations. Dr. Griffith aims to initiate a discussion between surgeons and basic scientists in her keynote address (8:30 AM, Tuesday, November 8) that will reveal new research questions about the factors involved in endometriosis.

Griffiths comments: "Endometriosis is non-malignant, but it is far from benign. It can have devastating health consequences for a woman, such as losing a kidney or a section of bowel or becoming infertile. There is a continuum from benign to malignant, and our understanding of endometriosis at the molecular level may open opportunities to help us understand metastatic cancer, and vice versa."

Cancer and endometriosis are very similar, both have endometrial cells that are able to migrate, vascularize and invade other tissues, some quite far away from the uterus. Griffiths explains: "Through cell and tissue engineering we can begin to understand the behavior of these cells, such as the pathways they follow and why. That will help us develop therapies targeted precisely at the sub-cellular factors that lead cells astray."

Griffith and her team are developing research models that allow scientists to manipulate constellations of the factors involved in endometriosis, such as cytokines of the immune system, whilst observing their roles in the disease process.

Endometriosis can affect any pelvic or extra-pelvic organ and when it occurs beyond the reproductive organs it generally affects the bowel or bladder but it has also been discovered in atypical sites (Virtual Poster 414), like the lungs (Virtual Posters 406 and 418).

Excising deep and invasive endometriosis whilst preserving the health and functionality of surrounding organs can be extremely challenging, as can be seen by keynote speaker Grace M. Janik, M.C. Director of Reproductive Endocrinology and Infertility at St. Mary's Hospital in Milwaukee, during her live telesurgery of a laparoscopic peritoneal resection of extensive endometriosis (9:00 AM, Tuesday, November 8). Dr. Janik will lead surgeons through the surgery and as the full extent of the disease reveals itself, she will discuss what steps have to be observed along the way, including a potential treatment of the bowel and urinary tract.

The sessions at the AAGL meeting provide training for the best strategies to eliminate endometriotic lesions with conservative methods. As part of a CME course a video will be shown, "Endometriosis Bowel Resection vs. Shaving," (12:05 PM, Tuesday, November 8) where surgeons are challenged to judge whether to treat endometriosis that has infiltrated the bowel by removing the diseased portion of the bowel itself (resection) or with a more conservative technique that attempts to remove only the endometriotic cells (shaving).

The AAGL Special Interest Group on Endometriosis has designed a new classification system to accommodate the advances in understanding of the etiology, diagnosis and treatment of endometriosis.

Keynote speaker Mauricio S. Abrão, MD will introduce the new system (9:50 AM, Tuesday, November 8) and address the need for an improved classification system, which includes deep infiltrating endometriosis and pelvic pain for improving patient prognoses. He will also lead a specialized course, "Deep Endometriosis: Surgical Approach and Future Perspectives" (8:00 AM, Monday, November 7) that reviews contemporary approaches for deep endometriosis from diagnosis to treatment and explain the relationship between endometriosis and cancer.

By focusing on endometriosis, the 40th AAGL Global Congress aims to raise awareness about this 'silent' disease but also provides laprascopic surgeons with the opportunity to further enhance their skills in minimally invasive treatments.

The keynote session will be from 8:00 to 10:00 AM Tuesday, November 8, 2011, and offers the latest surgical insights in dozens of oral presentations, educational videos, surgical tutorials and poster sessions at the 40th AAGL Global Congress of Minimally Invasive Gynecology, November 6-11, 2011 at the Westin Diplomat in Hollywood, FL.

Written by: Petra Rattue
Copyright: Medical News Today
Not to be reproduced without permission of Medical News Today

Visit our women's health / gynecology section for the latest news on this subject. AAGL 40th AAGL Global Congress of Minimally Invasive Gynecology Please use one of the following formats to cite this article in your essay, paper or report:

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posted by Lindsay Hannover on 4 Nov 2011 at 9:42 am

I have a number of health problems. I have severe arthritis in my right leg and hip. I use a cane or walker most of the time. I'm on oxygen 24 x 7 for C.O.P.D., and I have been fighting with depression for 20 years. And I'm in so much pain at night that I'm up and down all night. My doctor put me on morphine 12 hour caps. Any suggestions of a friend or doctor?

Lindsay Hannover

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Unisense FertiliTech's EmbryoScope® Receives FDA 510(k) Clearance For 5 Day Culture Of Human Embryos In IVF

Main Category: Fertility
Also Included In: Regulatory Affairs / Drug Approvals
Article Date: 14 Oct 2011 - 2:00 PDT

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The Food and Drug Administration has cleared Unisense FertiliTech's EmbryoScope® for clinical use in the United States. The EmbryoScope® is a tri-gas IVF incubator with a built-in camera for automated time-lapse imaging of fertilized oocytes in a safe incubation environment from conception until the time of transfer. Embryo development may be continuously observed on the instrument interface without disturbances to embryo culture for up to 5 days.

Separate processing units control the incubation environment and the data acquisition to ensure safe and reliable operation. The EmbryoScope® allows incubation of up to 72 individual embryos in six sterile disposable EmbryoSlides® each with a capacity for 12 embryos.

CEO Jens Gundersen states "the clearance will allow the newly established USA office, FertiliTech Inc. to commence commercial activities in the US".

Unisense FertiliTech A/S was founded in 2003 as a subsidiary of Unisense A/S. The company develops and sells technology and software for improvement of assisted reproduction. The company has 34 employees and a domicile in Aarhus Denmark.

Article adapted by Medical News Today from original press release. Source: Unisense FertiliTech A/S
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Researchers Able To Track Critical Fertility Enzymes Using Live-Action Films Of Worm Sperm

Main Category: Fertility
Article Date: 03 Nov 2011 - 0:00 PDT

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Compared to most other cells in an organism, sperm undergo a radical transformation to become compact and mobile delivery systems for paternal DNA. Even though sperm looks and moves quite differently across species, SF State researcher Diana Chu and colleagues now say that there are at least a few key enzymes that are critical for sperm development and mobility in species as different as mice and nematode worms. The study by Chu, et al., was published today online by the journal Genetics.

These enzymes (called PP1 phosphatases) are multitaskers in the nematode, which Chu and the others discovered through unique live-action films of the enzymes at work. First, the enzymes help to separate chromosomes during sperm cell division. After that, they play a role in the development of the sperm's pseudopods - the appendages that nematode sperm use to move. Pseudopods propel the sperm with a "treadmilling" motion, and the enzymes help disassemble the cell's inner skeleton in a way that pushes the treadmilling forward.

Sperm in mammals like mice - and men - don't have pseudopods and don't move in the same way, but they still rely on the phosphatases for development and mobility. Further study of the phosphatases could someday shed light on some of the causes of human infertility, since the enzymes seem to be critical for sperm function.

Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
Visit our fertility section for the latest news on this subject. "PP1 phosphatases regulate multiple stages of sperm development and motility in Caenorhabditis elegans," published in advance online by Genetics, was authored by Diana Chu, associate professor of biology at San Francisco State University, and colleagues at SF State: Jui-ching Wu, Aiza C. Go, Mark Samson, Thais Cintra, Susan Mirsoian, Tammy F. Wu, Margaret M. Jow and Eric J. Routman.
The study is now online at http://www.genetics.org/content/early/recent
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Researchers Create The First Simulator To Train Embryologists

Main Category: Fertility
Also Included In: Biology / Biochemistry
Article Date: 19 Oct 2011 - 1:00 PDT

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The Miguel Hernández University (MHU) of Elche and the Reproduction Unit of the Vistahermosa Clinic of Alicante (Spain) have presented a unique system that simulates the environment of an embryology laboratory and avoids the waste of valuable human biological material and breakages of medical equipment.

The Embryologist Station Training (TEST) consists of a console and a software that allow beginners to train the process of Intracytoplasmic Sperm Microinjection, one of the current most successful techniques of assisted reproductive techniques. The simulator will facilitate a better understanding of the whole process to students, but also will help to students and practitioners to improve their sensitivity with the controls and their capability for the immobilization and capture of sperm, the positioning of ovules and sperm microinjection.

"We have slightly adapted the control panel of a micromanipulator to make cheaper the product but we get the same precision as the original. Thus, with only two controllers and two joysticks students can be trained into the different phases of the procedure without supervision," said Federico Botella, leader of the Research Group Webdecision from the Center of Operations Research (CIO) Institute at the MHU. The console is easy to use, compact and portable. You only need a single USB cable to connect the console to a computer or laptop, so you can practice out of the embryology laboratory at your own pace.

Real micromanipulators offer no numerical support. All the process is visual. The embryologist has to focus pipettes and position objects in a 3D world that is viewed in two dimensions across the microscope. The software designed in the MHU offers two levels: beginner and expert. In the first mode, the system provides numerical aid, such as the position of the pipette or changing the colour of the tail of sperm when it is immobilized. The software also includes some warnings, as broken needle or pierced ovule. These warnings also appear in expert mode, but here the user has no numerical indications during the process. Also, Federico Botella explained: "During the training, different types of oocytes and sperm appear randomly so that the future professionals gain experience with a variety of diseases and complications. In addition, the software will keep track of successes and failures during the tests."

The EmbryoTraining project began through the collaboration between Federico Botella and Dr. José-Jesús López-Gálvez, director of the Reproduction Unit. The Vistahermosa Clinic has offered the University Specialist course in Human Reproductive Biology since 2001, where students practice ovule fertilization. The problem is that the equipment is very expensive and sometimes breaks during practices, and becomes unusable for the next day's work. At the same time, valuable human biological material is discarded, mainly oocytes, and so does clinical material such as needles and pipettes. According to Professor Botella: "When I met Dr. López-Gálvez he suggested the idea of developing a computer simulator that would make training easier and cheaper. At the WebDecision Research Group of the CIO Institute we studied the process from graphic and audiovisual material recorded in the hospital laboratory and considered it viable."

From 2008 both entities signed several R&D contracts to develop this idea and later the University applied for a national patent. Afterwards, the researchers created the spin-off company Nidoweb, which is located at the Science and Business Park of the MHU. The company is developing both the hardware and the software and has acquired the rights to exploit the patent. The console was designed at a company in Ibi. Finally, the multinational pharmaceutical company Merck became interested in the project and was granted exclusive rights to launch the product.

Merck will soon launch the simulator (TESTconsola+TESTicsi v1.0) although several reproduction centres are interested in acquiring it already. To protect the technology, the University has applied for the international PCT patent. "This first simulator covers the process of Sperm Microinjection, but we're considering designing other simulation applications related to other assisted reproduction techniques, both in humans and in animals, using our TESTconsola", said the Spanish researcher.

Article adapted by Medical News Today from original press release. Source: Asociación RUVID
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