Sperm News and Research

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The term sperm refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.

DHA plays an essential role in creating healthy sperm

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.

10 Jan 2012

Twins born five years apart thanks to advanced reproductive technology

Floren Blake is a miracle baby for her parents. At just under two months of age she also has a “twin” five-year-old brother Reuben. Even the clinicians who delivered the baby girl in November last year were ecstatic said her 38-year-old mother, Jody Blake, as the family shared the excitement brought about by advances infertility treatment over the past 20 years.

5 Jan 2012

Adolescent children of lesbian mothers report good quality of life

Adolescent children of lesbian mothers report as good quality of life as those with heterosexual parents, reports a study in the January Journal of Developmental & Behavioral Pediatrics, the official journal of the Society for Developmental and Behavioral Pediatrics.

4 Jan 2012

Cardiff University technique could help predict IVF embryos with best success chances

A new technique successfully used in mice to identify embryos likely to result in a successful pregnancy could be used in humans, potentially boosting IVF success rates and helping to reduce the number of multiple births, according to Cardiff University scientists.

4 Jan 2012

Woman's ovarian cycle plays an important role in her susceptibility to infection

A new research report in the Journal of Leukocyte Biology suggests that a woman's ovarian cycle plays an important role in her susceptibility to infection.

4 Jan 2012

Viewpoints: Picking the 'right fights'; Sebelius's 'special place' in history

Republicans do need to fight for their priorities, but it helps to pick the right fights. They should return in 2012 ready to make their differences clear on taxes, health care, regulation, and how to grow an economy (12/23).

23 Dec 2011

Scientists discover gene that causes Weaver syndrome

Scientists have found a gene that causes Weaver syndrome, a rare genetic disorder that typically causes large size at birth, tall stature, developmental delay during childhood, and intellectual disability.

16 Dec 2011

Scientists shed light on 3-D structure of olfactory receptor binding site

Banana, mango or apricot - telling these smells apart is no problem for the human nose. How the olfactory organ distinguishes such similar smells has been uncovered by an interdisciplinary team of researchers at the RUB. The scientists were the first to shed light on the dynamics of the three-dimensional structure of the binding site of an olfactory receptor. In so doing, they also found a characteristic pattern of hydrogen bonds between odorant and receptor, which accounts for the specificity of the olfactory sensors.

14 Dec 2011

The Hormone Foundation publishes fact sheet about harmful hCG diet

In an effort to provide clarity to the confusion surrounding the human chorionic gonadotropin (hCG) diet, The Hormone Foundation, the public education affiliate of The Endocrine Society, today published, "Myth vs. Fact: The Human Chorionic Gonadotropin (hCG) Diet."

9 Dec 2011

Obesity maybe passed down from fathers to kids: Study

Australian researchers have found that the sperm of overweight fathers appears to carry a molecular signal that causes their offspring to inherit obesity. This may be more severe in female children and males they add.

5 Dec 2011

Four PhD graduates to showcase cutting-edge research in University of Leicester lectures

The University of Leicester has announced its upcoming Doctoral Inaugural Lectures for 2011, which celebrate and showcase four doctoral graduates who are both outstanding academically and able to present their work in a way that is accessible and engaging. The speakers will talk about their doctoral research, with subjects including: personalising asthma prescriptions, understanding growth disorders of bodily organs, building models of human brain function and defining the mechanisms of pollen fertility in plants.

30 Nov 2011

The untold stories of children of sperm donors

From Jennifer Lahl and The Center for Bioethics and Culture, producers of the award-winning Eggsploitation (2010), Anonymous Father's Day presents the untold stories of children of sperm donors.

21 Nov 2011

Researchers produce normal sperm from mouse cells

A Ben-Gurion University of the Negev researcher has achieved a significant breakthrough in male fertility, producing normal sperm from mouse cells.

16 Nov 2011

Vitrolife, ParentPlus enter collaboration to develop new products for IUI

Vitrolife is entering into a collaboration agreement with ParentPlus LLC, with the aim of developing new products for IUI (Intra-Uterine Insemination, artificial insemination).

11 Nov 2011

Survey shows low awareness for non-surgical permanent birth control methods

A recent first-of-its-kind survey of 1,006 mothers in the U.S. showed that more than 75 percent of women reported being done having children, but only 24 percent discussed this decision with their OB/GYNs.

8 Nov 2011

Researchers discover key enzymes that are critical for sperm function

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.

2 Nov 2011

Fertility chip can accurately count sperm and measure their motility

Loes Segerink, a researcher at the University of Twente has developed a "fertility chip" that can accurately count sperm and measure their motility. The chip can be inserted into a compact device for one-off use.

29 Oct 2011

Longer looks: Looking for the inventor of the individual mandate, Miss. abortion referendum may have wider effects

In the course of defending the health care bill he passed in Massachusetts, Mitt Romney told Newt Gingrich that he got the idea for the individual mandate -- a rule dictating that everyone must buy health insurance or pay a penalty -- from the Heritage Foundation, a conservative Washington, D.C. think tank. Is it really responsible for creating the policy that is now so anathema to conservatives?

28 Oct 2011

FSU biologists devise new way to watch how cells move

For better and for worse, human health depends on a cell's motility -- the ability to crawl from place to place. In every human body, millions of cells -are crawling around doing mostly good deeds --- though if any of those crawlers are cancerous, watch out.

19 Oct 2011

ESCs express genes linked with early germ cell specification

Ordinarily, embryonic stem cells exist only a day or two as they begin the formation of the embryo itself. Then they are gone. In the laboratory dish, however, they act more like perpetual stem cells - renewing themselves and exhibiting the ability to form cells of almost any type, a status called totipotency.

14 Oct 2011