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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.

'Fertility chip' to accurately count spermatozoa in sperm

A new 'fertility chip', developed by researchers at the University of Twente's MESA+ Institute for Nanotechnology, can accurately count spermatozoa in sperm. This is an important step towards the development of a compact device for reliable 'pre-scanning' of male fertility. The researchers are publishing the invention of the chip in the scientific journal Lab on a Chip.

16 Feb 2010

Children's Hospital of Philadelphia awarded two grants to research into cellular therapies for blood disorders

The new decade may herald an era of cell therapy -- treating human diseases by delivering highly specific beneficial cells. In the wake of an NIH decision late last year permitting federally funded researchers to use new lines of human embryonic stem cells, the door has opened more widely to stem cell research.

16 Feb 2010

Top ten myths about sex

Boston Medical Group, a national physician network specializing in the treatment of erectile dysfunction and premature ejaculation, today released ten of the top myths surrounding sex. From which gender spends the most time fantasizing to whether size really matters, the list covers some of the common misconceptions about time spent between the sheets.

10 Feb 2010

Repros Therapeutics submits Androxal revised indication statement to the FDA

Repros Therapeutics Inc. today announced that the Company, as requested by the FDA during the Type C meeting held on January 25, 2010, has sent a revised indication statement to the FDA’s Division of Reproductive and Urologic Products for the use of Androxal® in the treatment of men wishing to preserve fertility while being treated for their hypogonadal state.

8 Feb 2010

Non-invasive MR Spectroscopy to determine ability to be fathers

Men with no sperm in their ejaculate—a condition known as azoospermia—may no longer need invasive procedures to determine if they have sperm in their testes according to a new study published in Human Reproduction.

5 Feb 2010

Merck receives marketing authorization for ELONVA

Merck & Co., Inc., which operates outside the U.S. and Canada as MSD, today announced the European Commission (EC) approval of ELONVA® (corifollitropin alfa injection). ELONVA is indicated for controlled ovarian stimulation (COS) in combination with a GnRH antagonist for the development of multiple follicles in women participating in an assisted reproductive technology (ART) program.

28 Jan 2010

Infertility can lead to isolation and impact on couple’s relationships

Struggling to get pregnant can be a serious blow to the self-esteem of both women and men, according to a new national survey. Seven in 10 (71 percent) women said that infertility makes them feel flawed, while half of men (50 percent) say it makes them feel inadequate.

22 Jan 2010

Mouse sperm can discriminate between its brethren and competing sperm, says study

Some mouse sperm can discriminate between its brethren and competing sperm from other males, clustering with its closest relatives to swim faster in the race to the egg. But this sort of cooperation appears to be present only in certain promiscuous species, where it affords an individual's sperm a competitive advantage over that of other males.

21 Jan 2010

Gently rocking embryos during IVF may improve success rates

Gently rocking embryos while they grow during in vitro fertilization (IVF) improves pregnancy rates in mice by 22 percent, new University of Michigan research shows. The procedure could one day lead to significantly higher IVF success rates in humans.

20 Jan 2010

Impact of life style factors on natural and medically assisted reproduction

The European Society of Human Reproduction and Embryology (ESHRE) has published a position statement on the impact of the life style factors obesity, smoking and alcohol consumption on natural and medically assisted reproduction.

20 Jan 2010

Effects of obesity, smoking and drinking on natural and medically assisted reproduction

19 Jan 2010

New procedure could lead to higher IVF success rates in humans

19 Jan 2010

Bone marrow transplantation survivors can father children: new study says

Men who were previously deemed sterile due to aggressive cancer treatments may still be able to biologically father children according to a new study published in the journal, Bone Marrow Transplantation.

18 Jan 2010

Chicago surrogacy firms launch program to aid parents with surrogacy births

Two Chicago-area surrogacy firms today announced the launch of a program designed to facilitate the delivery in Illinois of babies carried by gestational surrogates.

12 Jan 2010

A forum for clinicians and scientists to share research results and new developments

ESHRE invites you to attend its workshop on 'The search for excellence in IVF: a practical approach'. The workshop provides a forum for clinicians and scientists to share research results and discuss problems and new developments.

9 Jan 2010

Urologists use robot-assisted surgery to cut off average surgery time for vasectomy reversal

University of Florida urologists have used robot-assisted surgery to cut about 20 minutes off average surgery time for conventional vasectomy reversal using a microscope.

8 Jan 2010

Protein complex proves valuable for changing cell fate

The DNA contained within each of our cells is exactly the same, yet different types of cells - skin cells, heart cells, brain cells - perform very different functions. The ultimate fate of these cells is encoded not just in the DNA, but in a specific pattern of chemical modifications that overlay the DNA structure.

7 Jan 2010

Irvine Scientific receives CE mark for its ART products

Irvine Scientific, a leader in Assisted Reproductive Technologies (ART) announced today that it has received CE mark for a full range of its media designed for ART: Complete P-1® Medium with DSS™, Blastocyst Freeze Media, Blastocyst Thaw Media, Embryo Freeze Media, Embryo Thaw Media, Complete Early Cleavage Medium® (ECM®) with DSS™ and Complete MultiBlast Medium® with DSS™, Sperm Washing Medium, Sperm Maintenance Medium w/ HSA, 7% PVP w/ HSA, 10% PVP w/ HSA.

5 Jan 2010

Embryo biopsy safe for singleton pregnancies

The largest and longest running study of children born after preimplantation genetic diagnosis and screening has shown that embryo biopsy does not adversely affect the health of babies born as the result of a subsequent singleton pregnancy.

23 Dec 2009

Scientists offer potential new way to combat malaria

Stopping male mosquitoes from sealing their sperm inside females with a 'mating plug' could prevent mosquitoes from reproducing, and offer a potential new way to combat malaria, say scientists publishing new results in PLoS Biology on 22 December.

22 Dec 2009