A nationwide analysis of 14,655 women found that those with endometriosis have a higher risk of early pregnancy loss and later complications. Women with a history of endometriosis are also at a higher risk of haemorrhage, preterm birth, and other issues.
A young woman has become the first to give birth naturally after doctors transplanted frozen ovarian tissue from her removed at age 13. The procedure restored her fertility and allowed her to conceive without assisted reproduction.
A study published in Nature Communications reveals that a specific type of non-coding RNA, known as Eleanors, plays a key role in the development of endocrine therapy resistance in ER-positive breast cancer cells. Resveratrol was found to repress these RNAs, inhibiting the proliferation of resistant cancer cells.
A new review emphasizes the psychological impact of infertility and the need for healthcare professionals to consider emotional well-being. Counselling plays a critical role in providing comprehensive care, integrating medical and mental health aspects.
A comparison study found that IVFpredict is more accurate than the Templeton method in predicting the chances of successful live births after IVF treatment. The study analyzed data from 130,960 IVF cycles and showed that both models underestimated live birth rates, but IVFpredict remained more accurate.
Archaeologists have discovered a unique complete camel skeleton unearthed in Tulln, Austria, dating back to the 17th century. DNA analysis reveals the animal was a hybrid of a dromedary and Bactrian camel. The find provides insight into the use of camels as exotic animals during the Ottoman era.
A study published in Human Reproduction found a link between eating high-pesticide residue fruit and vegetables and lower sperm counts and percentages of normally-formed sperm. However, the total amount of fruit and vegetables consumed was unrelated to semen quality overall.
In 35 low- and middle-income countries, an estimated 16.7 million unwanted pregnancies occur annually, with 15 million preventable by modern contraception use. The study found that traditional methods are associated with a 2.7-fold increase in undesired pregnancies compared to modern methods.
Mitochondrial donation has the potential to prevent transmission of serious mitochondrial disease, which affects brain, muscle, liver, and kidney tissues. Researchers estimate that up to 2,500 women in the UK could benefit from this technique.
A new study found that frequent consumption of sugary drinks is associated with an earlier onset of menstruation in girls. The researchers followed 5583 girls aged 9-14 years and found that those who drank more than 1.5 servings of sugary drinks per day had their first period 2.7 months earlier.
Children born after IVF have fewer preterm births, low birth weight issues, and stillbirths. The study found that transferring only one embryo per cycle improves single baby health.
Marnie Halpern has made significant contributions to understanding the patterning of the nervous system using novel genetic approaches. Her research focuses on regional specializations within the neural tube, with a particular emphasis on brain asymmetry.
Research in mice suggests that maternal cigarette smoking can affect the fertility of male offspring, causing reduced sperm counts, poor sperm shape, and impaired fertility. The study's findings have implications for human health, particularly for men who were exposed to cigarette toxins in the womb.
Researchers studied lamprey embryology to understand the evolutionary origins of modern vertebrates. They discovered that Hox genes play a crucial role in hindbrain segmentation, which is conserved across vertebrates.
A large-scale study of over 7,000 women found that sustaining a desire for children after failed fertility treatment is linked to worse mental health. Women who still wished to have children were up to 2.8 times more likely to develop clinically significant mental health problems than those who did not sustain a child-wish.
New research from Rockefeller University suggests that the speed of a signal plays a crucial role in determining an embryonic cell's fate. The study found that cells respond better to signals with pulses rather than continuous ones, and that slower increases in signal strength can lead to weaker responses.
Researchers confirm a mathematical theory first proposed by Alan Turing in 1952 can explain the formation of fingers, revealing how signaling molecules act as the Turing system. The study uses systems biology and computational modeling to validate the theory, with be confirming results observed in limb bud tissue experiments.
Researchers found that L-carnitine administration improved axon area, myelin sheath area, and numerical density of myelinated axons, suggesting neuroprotective effects on sciatic nerve crush injury in rats. These findings indicate potential benefits of L-carnitine for treating nerve damage.
A new study suggests that using computer-automated, time-lapse embryo photography during in-vitro fertilization can improve embryo selection, leading to a higher chance of pregnancy. The technology allowed researchers to assess embryo development and predict which embryos were more likely to become viable blastocysts.
A study found that oral contraceptive users have significantly lower measures of ovarian reserve compared to non-users, with a marked suppressive effect on anti-Mullerian hormone and antral follicle count. The results suggest that women taking the Pill may need more frequent assessments of their reproductive status.
A large case-control study found that pregnancies from egg donation are associated with a higher risk of pregnancy-induced hypertension and pre-eclampsia. The study included over 580 pregnancies and found that the risk was more than three-fold higher for routine IVF patients.
A survey of 973 women in the UK and Denmark found that while most are aware of egg freezing, only one in five consider it appropriate for their personal circumstances. The majority associate oocyte freezing with delaying childbearing until social and domestic circumstances improve.
A study by Dr Ana Cobo found that cumulative live birth rates increase progressively with the number of vitrified eggs used, reaching a plateau at 97.3% with 40 eggs. Egg banking can provide a large pool of donor eggs without synchronizing cycles, making it a more efficient and safer process.
A large multicentre trial found no significant improvement in IVF success rates for women who underwent outpatient hysteroscopy before further IVF treatment. The study suggests that endometrial scratching, not routine hysteroscopy, may be responsible for the previously reported improvements.
The study analyzed over 230,000 sperm donation cycles in the UK and found no significant impact on live birth rates from sperm donor age. Instead, it highlighted the significance of female partner's age and sperm quality. The results suggest that advancing paternal age may not be as crucial for fertility outcomes as previously thought.
A 30-year follow-up study found no link between fertility drugs and breast, ovarian, and uterine cancers, except for extended use of clomiphene citrate. The study of 12,193 women treated for infertility showed a higher risk of invasive breast cancer with clomiphene use in 12 or more treatment cycles.
Scientists have successfully replicated the process of human embryonic stem cells differentiating into separate populations with a reproducible spatial order. By confining cells in tiny circular patterns on glass plates, researchers were able to induce endoderm, mesoderm and ectoderm formation, mirroring natural conditions.
A large Danish population-based cohort study found that children born to women with fertility problems have a higher risk of psychiatric disorders than naturally conceived children. The increased risk persists throughout childhood and into young adulthood.
A study published in Human Reproduction found that mothers of daughters with polycystic ovary syndrome (PCOS) have a significantly increased risk of death, especially when combined with type 2 diabetes. The research compared mortality rates between mothers and fathers of PCOS daughters with the general Dutch population.
A recent study by evolutionary biologists at the University of Massachusetts Amherst shows that a mutation in a single gene during development can lead to different consequences, including changes in jaw shape and feeding strategies. This genetic variation predicts differences in feeding mechanics and alters skull structure.
Scientists discovered that species with germ plasm, a cell lineage responsible for producing gametes, evolve faster than those without. This accelerated rate of evolution leads to 'explosive radiations' of species and challenges traditional views on the process.
Ginsenoside Rb1 attenuates damage to cerebral cortex neurons by downregulating nitric oxide, superoxide, and tumor necrosis factor-α expression in hypoxia-activated microglia. The study suggests that ginsenoside Rb1 is a promising candidate for clinical use in preventing neuronal degeneration following cerebral ischemia.
Research reveals that lipid rafts are essential for the renewal of brain neurons in Alzheimer's disease by modulating the aberrant autophagic-lysosomal pathway. The study highlights a possible mechanism underlying the clearance of Alzheimer's disease products, implicating the autophagic-lysosomal pathway.
Researchers propose that fins and limbs develop from the area surrounding the belly due to the interaction of ectodermal tissues with mesoderm layers. This model, published in Evolution & Development, suggests that epigenetic factors play a crucial role in shaping embryonic development and ultimately giving rise to paired appendages.
A study published in Europe's leading reproductive medicine journal found that freezing semen before cancer treatment can significantly increase the chances of fatherhood. Among 334 male survivors who wanted to have children, those with frozen semen had a success rate of 62% compared to 21% without it.
Belgium's policy of limiting embryo transfers with six ART cycles reimbursement shows no negative impact on pregnancy and delivery rates, while reducing multiple births. This 'Belgian model' can be considered by governments worldwide to achieve a 50% reduction in MPR and public health costs.
Research published in the European Society of Human Reproduction and Embryology's journal Human Reproduction found a significant association between casual employment and delayed childbirth. Women who spent more time in temporary jobs were less likely to have their first child by age 35, regardless of their socioeconomic status.
Researchers at Harvard University investigated the process of villification, which shapes gut villi, and found similarities in its principles across different animal species. They discovered that mechanical forces from muscle layer differentiation drive early villus growth.
Researchers have developed an animal model to simulate the pathological process of Alzheimer's disease, focusing on the locus coeruleus. This study shows that degenerative alterations in noradrenergic neurons of the locus coeruleus are consistent with pathological changes observed in patients with Alzheimer's disease.
Researchers have successfully induced differentiation of Wharton's jelly mesenchymal stem cells into retinal progenitor cells, offering a promising new treatment option for visual impairment in retinal degenerative diseases. The study demonstrates the potential of these stem cells as seed cells for clinical treatment.
Research found that the average pregnancy length is 268 days, but variations of up to 37 days were detected. Factors such as a woman's age, birth weight, and previous pregnancies also influenced gestation duration.
A study of egg banking for anticipated gamete exhaustion found that many women believe they'll never use their stored eggs, but still consider the experience positive. Most wish they had done so at an earlier age to preserve fertility.
A large UK cohort study found that children born through assisted reproduction have no higher cancer risk than naturally conceived children. However, rare cancer types were associated with low birth weight and small absolute excess risks.
A large Dutch nationwide cohort study found that women giving birth to multiples after IVF treatment have a higher risk of breast cancer. The study suggests a link between high embryo implantation potential and breast cancer risk, with increased levels of VEGF possibly playing a role.
A meta-analysis of studies found that women working shifts experience a higher rate of menstrual disruption (33% increase) and subfertility (80% increase), while night shift work only increases the risk of miscarriage. The study suggests that altering circadian rhythms can lead to short- and long-term biological disturbances.
A study of almost 10,000 first cycles of egg donation treatment found that female obesity reduces uterine receptivity to embryo implantation, compromising reproductive outcome. Obese women had significantly lower rates of embryo implantation, pregnancy, twin pregnancy, and live birth compared to normal-weight women.
A new study found that phthalate exposure is associated with reduced fertility in women undergoing IVF treatment. Exposure to specific phthalates was linked to lower IVF success rates, including implantation failure and reduced oocyte retrieval rates.
A new study suggests that early life factors such as impaired fetal growth and exposure to maternal smoking may lead to reduced semen parameters in adulthood. The study found that around one in six men had sperm parameters below the normal threshold, with poor fetal growth and smoking exposure associated with lower sperm quality.
A study of 1423 egg donors across 11 European countries found that altruism is the primary motivation, but financial compensation plays a significant role in some countries. The majority of donors are young women who expect personal benefits, and their age affects their motivations.
A new low-cost method of in-vitro fertilization developed at the University of Colorado Boulder showed successful human clinical trials in Belgium, suggesting infertility care may be universally accessible. The simplified laboratory system, estimated to cost between $250, performed roughly the same as conventional IVF programs.
A study in Belgium demonstrates that simplified IVF methodology can be successful and cost-effective, with estimated costs as low as €200 per cycle. The research aims to make infertility care universally accessible to couples in developing countries.
A new genome sequencing technique has been used to select embryos for IVF, resulting in the first birth following embryo screening. The 'next generation sequencing' method reveals information on genetic disorders and chromosomal abnormalities, increasing the chances of successful pregnancies.
A recent study found that morbidly obese women have a significantly lower risk of developing endometriosis compared to those with low normal BMI. The association was strongest in infertile women, who had a 77% lower rate of endometriosis
Researchers studying Nematostella, a simple sea anemone, discovered that cells begin thickening and then thin out as tentacles elongate. This process drives the formation of basic epithelial appendages, revealing fundamental principles in animal body construction.
A new review highlights the need for additional legislation and guidelines for surrogate pregnancies in modern obstetrics. The lack of clear guidance puts women, babies, and parents at risk of exploitation, making it essential for healthcare professionals to have practical advice on managing these cases.
A randomized trial compared treatments for ectopic pregnancies, finding no significant differences in subsequent fertility between medical treatment and conservative surgery. The study suggests that medical treatment may be preferred for less active ectopic pregnancies due to fewer risks, while surgical treatment is recommended for wom...
Jonathan Wisco, associate professor at Brigham Young University and UCLA, receives the Basmajian Award for his outstanding contributions to teaching and research in anatomy. He has increased teaching responsibilities and established a laboratory to support translational anatomy research.
A recent study published in Human Reproduction found that children born after infertility treatment have a higher risk of developing asthma. At the age of five, these children were two to four times more likely to experience asthma, wheezing, and take anti-asthmatic medication compared to those conceived naturally.
A French study of over 26,600 men found a significant decline in semen concentration and quality between 1989 and 2005. The researchers reported a 32.2% decrease in semen concentration and a 33.4% decrease in the percentage of normally formed sperm.
The partnership enables the publication of high-quality stem cell research in an open-access venue, promoting outreach and quality in the field. Stem Cell Reports will feature various article types and allow authors to retain full copyright over their work.