Dr. Schisterman[/caption]
Enrique Schisterman, Ph.D.
Chief, Epidemiology Branch, DIPHR
Eunice Kennedy Shriver National Institute of Child Health and Human Development
NICHD
MedicalResearch.com: What is the background for this study?
Response: Small studies indicated that zinc and folic acid supplements for men might improve semen quality as both zinc and folic acid are involved in DNA transcription and have antioxidant functions. But no large-scale randomized trials have been done to assess efficacy, which is important since dietary supplements are largely unregulated, and FDA cannot regulate supplements until after they come to market. Some male fertility-targeted supplements are already among the most commonly sold supplement products, despite the lack of data to guide their use.
Dr. Hargreave[/caption]
Marie Hargreave, PhD
Senior Researcher
Danish Cancer Society Research Center
Copenhagen
MedicalResearch.com: What is the background for this study?
Response: Very few studies have examined the association between frozen embryo transfer and the risk of childhood cancer and most of them have been too small to show any effects.
In our large nationwide population based study we found that frozen embryo replacement was associated with an increased risk of childhood cancer and especially for leukemia and neuroblastomas.
Emma Xiaolu Zang, Ph.D.
Assistant Professor
Department of Sociology, Yale University
New Haven, CT
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: In the past decade, Generation Xers—individuals born between the early or mid-1960s and early 1980s—have outnumbered Baby Boomers (i.e. individuals born 1946-64) and currently make up a larger segment of the United States (US) labour force.
There is a debate on whether college-educated women in Generation X have spawned a major shift in labor and fertility behaviors compared with their Baby Boomer counterparts because they are less ambitious in balancing family and career and tend to prioritize child-rearing.
This study finds some support for this argument. Results reveal that Total Fertility Rates (TFRs) are increasing across cohorts for all educational groups and the increase is greatest for college-educated women. The increase in cohort TFR among college-educated women is being primarily driven by an increasing proportion of those with two children transitioning to a third birth.
Dr. Phillips[/caption]
Nancy Phillips, MD
Clinical Assistant Professor
Rutgers Robert Wood Johnson Medical School
Women's Health Institute
New Brunswick, NJ
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The background of this article was as an interest piece prompting a literature review. We both felt it represented an underserved clinical need.
The main findings are that the paternal age at conception does impact pregnancy outcomes, including pregnancy complications, fetal chromosomal anomalies and childhood cancers and psychological disorders.
There is not an increased risk of most childhood cancers among children conceived by IVF....
Dr. Immler[/caption]
Dr Simone Immler PhD
School of Biological Sciences
University of East Anglia
MedicalResearch.com: What is the background for this study?
Response: Sperm produced by one male vary substantially both in their genetic content as well as their swimming ability including speed and duration. In a previous study in the zebrafish, we showed that sperm swimming duration is at least partly determined by the underlying haploid genetic content carried by the different sperm within an ejaculate (alavioon et al. 2017 PNAS). If sperm with different swimming ability differ in their genetic content, we expect to see differences among the offspring sired by sperm that vary on their swimming ability.
In our new study, we tested how selection on sperm swimming duration affects offspring fitness. We performed in vitro fertilisation assays mimicking natural conditions in the externally fertilising zebrafish. We split the ejaculate of one male into two halves and in one half we added the sperm straight away to the eggs, allowing all motile sperm to have a go at fertilising an egg. In the second half, we activated the sperm but delayed the moment of fertilisation by 25 seconds and thus selected for the longer swimming sperm. In this treatment only sperm that were still swimming after this period of time (about 50%) were able to fertilise an egg.
We then reared the offspring to adulthood and measured number of offspring produced throughout life and measured lifespan. We found that sperm that were able to swim for longer sired offspring that not only produced more and healthier offspring but also lived for longer than their full siblings sired by sperm with reduced swimming ability. Our previous research (Alavioon et al. 2017 PNAS) suggests that these differences are caused at least partly by genetic differences among sperm.
Dr. Dayan[/caption]
Natalie Dayan MD MSc FRCPC
General Internal Medicine and Obstetric Medicine,
Clinician-Scientist, Research Institute
Centre for Outcomes Research and Evaluation (CORE)
McGill University Health Centre
Montréal QC
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Infertility treatment is rising in use and has been linked with maternal and perinatal complications in pregnancy, but the extent to which it is associated with severe maternal morbidity (SMM), a composite outcome of public health importance, has been less well studied. In addition, whether the effect is due to treatment or to maternal factors is unclear.
We conducted a propensity matched cohort study in Ontario between 2006 and 2012. We included 11 546 women who had an infertility-treated pregnancy and a singleton live or stillborn delivery beyond 20 weeks. Each woman exposed to infertility treatment was then matched using a propensity score to approximately 5 untreated pregnancies (n=47 553) in order to address confounding by indication. Poisson regression revealed on overall 40% increase in the risk of a composite of SMM (one of 44 previously validated indicators using ICD-10CA codes and CCI procedure codes) (30.3 per 1000 births vs. 22.8 per 1000 births, adjusted relative risk 1.39, 95% CI 1.23-1.56). When stratified according to invasive (eg., IVF) and non-invasive treatments (eg. IUI or pharmacological ovulation induction), women who were treated with IVF had an elevated risk of having any severe maternal morbidity, and of having 3 or more SMM indicators (adjusted odds ratio 2.28, 95% CI 1.56 – 3.33), when compared with untreated women, whereas women who were treated with non-invasive treatments had no increase in these risks.
Elena Ricci, ScD, PhD
Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico,
Milano
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The role of alcohol drinking on male fertility is still controversial. A negative association between alcohol intake and semen quality has been suggested by some authors, although other studies did not confirm this finding. We performed a cross-sectional analysis of baseline data from a cohort study on subfertile couples, and found that men with a moderate alcohol intake (4 to 7 units of ethanol per week - 1unit=12.5 grams ) had higher semen volume and sperm total count than men with both lower and higher intake.
Abstainers had a better sperm concentration, but the small size of this group prevented us from drawing any significant conclusions. Alcohol was not associated to sperm motility.
Dr. Avidor-Reiss[/caption]
Tomer Avidor-Reiss, Ph.D.
Professor, College of Natural Sciences and Mathematics
Department of Biological Sciences
University of Toledo
Toledo, OH 43606
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Most dividing cells in the body need exactly two centrioles for normal cell division and development. Abnormalities in centriole number can cause cancer and devastating developmental defects. Because of this importance of centriole number and because all cells originate from the zygote – the product of the sperm and egg – it makes sense that the zygote should possess two centrioles, as well.
However, the egg does not contain any centrioles, so the sperm is the sole contributor of the centrioles; and yet, it is currently thought that the sperm contains only one centriole. This is problematic because supposedly that leaves the zygote with only one centriole, even though it must propagate cells with two centrioles. In the past, we found that insect sperm have an atypical centriole that escaped discovery because it is so different. We therefore hypothesized that humans may also have an atypical sperm centriole.
Our new paper shows that in human sperm there exists, in addition to the known centriole, a second centriole that deviates from the typical structural and composition that is expected from a centriole. Although it looks very different from any centriole ever described, we found that it functions in an in vitro functional assay. Furthermore, during fertilization, it performs the functions traditionally associated with centrioles. Together, this resolves a 50-year-long debate regarding the centrioles of human sperm; the sperm contains two functional centrioles, despite that one is atypical.
Caroline Smith, PhD
Professor Clinical Research
Western Sydney University Research Theme Champion Health and Wellbeing
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Despite technological improvements to IVF the success of IVF treatment remains low. Consequently, new drugs, laboratory techniques and other treatments need to be developed and rigorously tested to explore their effects on producing healthy babies for women undergoing IVF. In 2002, the first randomised controlled trial of acupuncture administered a specific form of IVF acupuncture at the time of embryo transfer.
The results indicated the chance of achieving a pregnancy from acupuncture was twice that to women undergoing IVF treatment alone. From mid 2000s many women have started to use adjunctive treatments such as acupuncture whilst undergoing IVF. We conducted and reported on a pilot study in 2006 which produced results suggesting a benefit. It is important that these findings were rigorously examined in a larger trial.
Findings are presented from our trial presented in JAMA. Our study of over 800 Australian and New Zealand women undergoing acupuncture treatment during their IVF (in vitro fertilization) cycle has failed to confirm significant difference in live birth rates.
Dr. O'Rand[/caption]
Michael O'Rand, PhD
Retired professor of cell biology and physiology in the University of North Carolina at Chapel Hill School of Medicine, and president/CEO of Eppin Pharma, Inc
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: My lab at the UNC School of Medicine discovered the protein Eppin in 2004. It coats the sperm cell. Through our subsequent research, we learned it is essential for sperm protection in the female. We thought it could make an excellent target for a male contraceptive.
Subsequently we developed a compound called EP055 that would bind to Eppin and as a result stop sperm from swimming. In our latest study published in PLOS One, we show that EP055 substantially limits sperm motility in non-human primates. And we showed the effect of EP055 is temporary, which would make it a good contraceptive.
Dr. Hatch[/caption]
Dr. Elizabeth E. Hatch, PhD
Professor, Epidemiology
School of Public Health
Boston University
MedicalResearch.com: What is the background for this study?
Response: We are conducting a large, ongoing, preconception cohort study, PREgnancy STudy Online or PRESTO http://sites.bu.edu/presto/ in the U.S. and Canada of couples who are planning a pregnancy. The overall goal of the study is to identify factors that affect fertility, measured by the time taken to conceive, and factors that affect the risk of miscarriage. Since many women are postponing pregnancy until the later reproductive years, we would like to help find behavioral and environmental factors that might either help or harm fertility so that couples can avoid the stress and expense of infertility workups and treatment. As part of the larger study, we looked at consumption of sugar-sweetened beverages (SSBs) by both the male and female partner, since some previous research suggested that sugar-sweetened beverages might harm semen quality and ovulation.
For this analysis, we included 3,828 women aged 21 to 45 and 1,045 of their male partners. We asked both males and females (in separate baseline questionnaires) about their usual consumption of SSBs over the last month, and we had a drop-down menu with names of individual sodas (both sugar-sweetened and diet) and energy drinks. We also asked general questions about the frequency of fruit juice and ‘sports drink’ consumption. In our analysis, we controlled for multiple factors that might ‘confound’ the associations, such as body mass index, education, caffeine, smoking and alcohol consumption, as well as a measure of overall diet quality.
Paolo Cavoretto MD PhD
San Raffaele Scientific Centre
Obstetrics and Gynaecology Department
Milan Italy
MedicalResearch.com: What is the background for this study?
Response: Congenital heart defects (CHD) are the most common forms of congenital disorders and a relevant cause of perinatal morbidity and mortality involving about 0.8% of pregnancies. IVF pregnancies are very common nowadays with increasing rates in the developed countries worldwide. There is no consensus in current practice guidelines whether IVF/ICSI conception represents an indication for performing a fetal echocardiogram according to different eminent scientific societies due to differences in the estimations of the risk for CHD in the available literature.
Dr. Shah[/caption]
Silvi Shah, MD, FACP, FASN|
Assistant Professor
Division of Nephrology
University of Cincinnati
Cincinnati, OH
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Elderly represent the fastest growing segment of incident dialysis patients in Unites States. The annual mortality in end stage renal disease (ESRD) patients is very high ~ 20%.
Since most of the deaths occur in the first year of dialysis, it is possible that health conditions present prior to initiation of dialysis may impact long-term outcomes. In this study, we determined the impact of poor functional status at the time of dialysis initiation and pre-dialysis health status on type of dialysis modality, type of hemodialysis access and one-year mortality in elderly dialysis patients. We evaluated 49,645 adult incident dialysis patients (1/1/2008 to 12/31/2008) from the United Data Renal Data System (USRDS) with linked Medicare data for at least 2 years prior to dialysis initiation. Mean age of our study population was 72 years. At dialysis initiation, 18.7% reported poor functional status, 88.9% has pre-dialysis hospitalization, and 27.8% did not receive pre-dialysis nephrology care. Patients with poor functional status had higher odds of being initiated on hemodialysis than peritoneal dialysis, lower odds of using arteriovenous access as compared to central venous catheter for dialysis and higher risk of one-year mortality.
Prof. Dr. João Martins Pisco MD PhD
Radiologia de Intervenção
Hospital Saint Louis - Rua Luz Soriano
Portugal
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: The background for the study is the good results I started to check in patients with uterine fibroids who could conceive a successful pregnancy with live birth following embolization.
MedicalResearch.com: What should readers take away from your report?
Response: The readers should know that fertility can be restored following embolization of uterine fibroids, particularly if the embolization is partial. The wish of conception in patients with uterine fibroids is not a contraindication for fibroids embolization.
Dr. Razaz[/caption]
Neda Razaz, PhD, MPH
Postdoctoral Fellow
Reproductive Epidemiology Unit
Karolinska Institutet
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Multiple births of twins and triplets – and the associated health risks – have increased in many high-income countries, with a respective two-fold and three-fold increase in recent decades.
In Canada, triplet births or higher have increased from 52.2 per 100 000 live births to 83.5 between 1991 and 2009, mainly because of an increase in fertility treatments for older women of child-bearing age. In this study we found that among twin and triplet pregnancies that were reduced to singleton or twin pregnancies, there was a substantial reduction in complications such as preterm birth and very preterm birth. Although rates of death and serious illness were not lower among all multifetal pregnancies that were reduced, pregnancies that resulted from fertility treatments did show a significant reduction in rates of death or serious illness following fetal reduction.
Dr. Polotsky[/caption]
Alex J. Polotsky, MD
Associate Professor of Obstetrics and Gynecology
University of Colorado Denver
Practice homepage
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: It has been well established that profound dietary changes occurred over the past 100 years. The type and amount of fat consumed has changed quite a bit over the course of 20th century. Intake of omega-3 polyunsaturated fatty acids (PUFAs), previously consumed in large quantities by humans from vegetable and fish sources, has dropped significantly. The typical Western diet (sometimes also called the typical American diet) provides an omega-6 to omega-3 fatty acid ratio of as high as 25:1, which is quite different from what it used to up until about the 19th century (believed to be about 1:1 ratio).
In animal studies, diets enriched with omega-3 PUFA enhance early embryonic development and boost progesterone secretion. Obesity is well known to be associated with decreased progesterone production in women (even if a obese woman ovulates). The reasons for this are not clear. Obesity is also a state of low-grade chronic inflammation. Omega-3 fatty acids are well known to have anti-inflammatory properties.
We sought to test whether dietary supplementation with omega-3 PUFA favorably affects reproductive hormones in women and whether this effect includes normalization of progesterone production in obesity.
All women in the study tolerated supplementation well, and had significantly decreased their omega-6 to omega-3 ratios (they were normalized much closer to a 1:1 ratio). Omega-3 supplementation resulted in a trend for increased progesterone in obese women, thus enhancing ovulatory function. A 16 to 22 percent increase was observed. Additionally, the supplementation resulted in reduced systemic inflammation.
Dr. Jungheim[/caption]
Emily S. Jungheim, MD, MSCI
Assistant Professor, Obstetrics and Gynecology
Division of Reproductive Endocrinology and Infertility
Washington University
St. Louis, Missouri
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Many women with health insurance lack coverage for fertility treatment so they end up being self-pay for fertility treatments which can be expensive and limit access to care.
15 states have responded with mandates for employers to include fertility coverage in their employee insurance benefits, and 5 of these have comprehensive mandates that include IVF. Illinois is one of these states. Washington University is located on the border between Illinois and Missouri so our fertility center treats a number of women with coverage for fertility treatment and a large number of women who are self-pay for fertility treatment. We suspected that women requiring IVF to conceive were more likely to follow through with treatments if they had coverage so we decided to look at our data.
Ultimately we confirmed our suspicions. Women with coverage were more likely to come back for additional cycles of IVF if they didn't conceive. Ultimately this ability to come back for additional treatment cycles led to a higher chance of live birth.
Dr. Jacob Udell[/caption]
Jacob A. Udell MD MPH FRCPC
Cardiovascular Division
Women's College Hospital
Toronto General Hospital
University of Toronto
MedicalResearch.com: What is the background for this study?
Response: We’ve noticed for a long time that fertility drug treatment can cause short-term complications such as high blood pressure or diabetes in pregnancy. We recently started wondering whether there may be long term consequences for these women years after a baby was or was not born. To do this, we looked at all women who were treated with fertility therapy in Ontario for the last 20 years, from what we could determine this amounted to more than 28,000 women. We then followed up years later to examine every woman’s cardiovascular health.
Dr. Kristen Kreisel[/caption]
MedicalResearch.com Interview with:
Dr. Kristen Kreisel PhD
Epidemiologist at Centers for Disease Control and Prevention
Centers for Disease Control and Prevention
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Pelvic inflammatory disease (PID), an infection of the female reproductive tract often associated with STDs, is putting millions of women at risk for infertility, ectopic pregnancy and chronic pelvic pain. Our study looked at data from the National Health and Nutrition Examination Survey to estimate the national burden of PID. Findings show an estimated 4.4 percent of sexually-experienced women aged 18-44, or approximately 2.5 million woman nationwide reported a history of PID.
Dr. Jennifer F. Kawwass[/caption]
MedicalResearch.com Interview with:
Jennifer F. Kawwass, MD, FACOG
Assistant Professor, Emory Reproductive Center
Director of Third Party Reproduction, Emory Reproductive Center
MedicalResearch.com: What is the background for this study?
Response: With the increasing use of assisted reproductive technology (ART), the number of cryopreserved embryos in storage has increased, as residual viable embryos from an in vitro fertilization (IVF) cycle may be frozen for future use. Each embryo maintains attributes reflective of the age of the female at time of the original oocyte retrieval. Embryo donation, a form of third-party reproduction, involves donation without compensation of previously formed embryos to another couple for implantation.
Limited published data exist detailing outcomes of donor embryo cycles. Patients and clinicians would benefit from information specific to donor embryo cycles to inform fertility treatment options, counselling, and clinical decision-making. We sought to quantify trends in donor embryo cycles in the United States, to characterize donor embryo recipients, and to report transfer, pregnancy, and birth outcomes of donor embryo transfers.