Great Sperm-egg Secret Unscrambled

Scientists have made the long-sought discovery of how sperm latches onto an egg in the very first spark of reproduction. This new finding opens up avenues for new contraception or treating infertility, they said. When a sperm meets an egg, they fuse to form a single-cell entity called a zygote, which divides to produce an embryo. In 2005, Japanese researchers reported they had found a molecule jutting from the membrane of mammalian sperm that docks ...
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New Nanoparticle Created by UT Arlington Physicist for Cancer Therapy

A luminescent nanoparticle is being created by a physicist from University of Texas at Arlington, to use in security-related radiation detection, could be an advance in photodynamic cancer therapy. Wei Chen, professor of physics and co-director of UT Arlington's Center for Security Advances Via Applied Nanotechnology, was testing a copper-cysteamine complex created in his lab when he discovered unexplained decreases in its luminescence, or light emitting power, ...
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Number of Duplicated Genes and Adaptation, New Links Found: Study

Small-scale duplication genes, or SSDs, are important for adapting to novel environments and surviving environmental changes, found in a study, suggesting two genes are better than one. Published in the advanced online edition of iMolecular Biology and Evolution/i, authors Takashi Makino, Masakado Kawata, et al., were the first to examine more than 30 fully sequenced vertebrate genomes to look at SSDs as genetic signposts that correlated with habitat variability. ...
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Chrono, the Last Piece of the Circadian Clock Puzzle Found

The circadian clock, the tightly regulated internal clock of daily cycle of all living organisms, is controlled by a complex network of genes and proteins. The whole-body circadian clock, influenced by the exposure to light, dictates the wake-sleep cycle. At the cellular level, this network of genes and proteins switch each other on and off based on cues from their environment. Most genes involved in the regulation of the circadian clock have been characterized, ...
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Heavy and Prolonged Bleeding During Menopause is Common

Menopause is thought to be the time for an end to predictable monthly periods. Researchers at the University of Michigan say it's normal, however, for the majority of them to experience an increase in the amount and duration of bleeding episodes, which may occur at various times throughout the menopausal transition. The researchers from the U-M School of Public Health and U-M Health System offer the first long-term study of bleeding patterns in women of multiple ...
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It’s Not the End of the Road for HIV Patients

An inspiring story was recently published on India HIV/AIDS Alliance blog, about an HIV patient who has dealt with the condition and not allowed the disease to dominate his life. a href="http:www.medindia.net/patients/aids/treatment.htm" target="_blank" class="vcontentshlink"HIV/a has destroyed the lives of a large number of people. Men have lost their jobs, women have been ostracized and children have been abandoned. Today, however, there has ...
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Whooping Cough Bacterium in Australia Undergoes Change, Now Vaccine Less Effective: Study

In Australia, the bacteria that cause whooping cough have undergone mutation, making the available vaccine for the disease less effective, experts have said. After analysing strains of bacterium Bordetella pertussis that causes whooping cough, a UNSW-led team of researchers discovered that the bacterium now does not produce an important protein called pertactin. Pertactin is one of the three proteins made from purified extracts of Bordetella pertussis bacteria ...
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Daytime Sleep Reduces Longevity: Study

Those power naps during day time could actually be doing you more harm than good by reducing your life span, suggests a new study. According to researchers, those who took a nap for less than an hour in a day had 14 per cent more chance of dying. And in cases when the sleep time lasted for more than an hour, the risk increased by 32 per cent. But experts say that sleep is good and that we all need it and the main point to be kept in mind is the reason why ...
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New Experimental Anti-viral Drug Offers Promise in Fight Against Measles

A novel experimental anti-viral drug when taken orally could help contribute to measles eradication, show clinical trial results. The drug, so far tested on animals, has been effective on a virus closely related to the one that causes measles, having reduced virus levels and prevented death. Despite major progress to contain the highly-contagious disease worldwide, measles has caused around 150,000 deaths annually since 2007, according to the study, ...
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