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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.

Fathers can influence offspring sex ratios, mice study shows

It has traditionally been thought that in mammals only mothers are able to influence the sex of their offspring.

11 Sep 2017

Bariatric surgery in men linked to frequent sperm aberrations and lower fertility rates

A meta-analysis of studies in which men underwent Roux-en-Y gastric bypass (RYGB) procedures found frequent sperm aberrations and lower fertility rates despite improvements in weight, androgen levels, and sexual quality of life following the procedure.

8 Sep 2017

Mutations altering gene function play role in development of intellectual disabilities

Intellectual disabilities are often caused by a mutation that damages a gene, preventing the associated protein from functioning properly.

1 Sep 2017

Scientists question CRISPR human embryo editing claims

A paper published in the journal Nature on the 2nd August described how a gene editing tool CRISPR could be used to correct a genetic mutation that leads to a heart condition. This team had performed the genetic editing on the gene sequences in dozens of viable human embryos to attempt to prevent a genetic heart condition called hypertrophic cardiomyopathy.

31 Aug 2017

Average paternal age rises in the USA

According to a latest study by the researchers at the Stanford University School of Medicine, the average age of fathers of the new born babies in United States has risen by 3.5 years over the last four decades. The study was published yesterda in the journal Human Reproduction.

30 Aug 2017

Mammal embryos discard paternal mitochondria within days of fertilization, new study shows

Mammal embryos shed paternal mitochondria within days of fertilization, perhaps to ensure the offspring a healthy life, a new study shows.

29 Aug 2017

Long non-coding RNAs could represent novel male infertility drug targets

Scientists have found distinctive portions of genetic material--known as lncRNAs--that help sperm develop. Male mice lacking a particular lncRNA have low sperm count, suggesting lncRNAs could represent novel infertility drug targets.

24 Aug 2017

Scientists use novel cell tracing method to describe testicular macrophages

The origin, development, and characteristics of two types of testicular macrophage have been described by a CNRS team at the Centre d'Immunologie de Marseille-Luminy.

11 Aug 2017

Researchers investigate genetic mutations in sperm cells to help prevent birth defects

It's about preventing birth defects. Associate pharmaceutical sciences professor Wenfeng An and his team at South Dakota State University are investigating mobile DNA segments, known as L1s, in sperm cells with the goal to treat families at risk for genetic mutations before they conceive.

10 Aug 2017

Tiny lab-grown structures that resemble amniotic sac may help in infertility research

The first few weeks after sperm meets egg still hold many mysteries. Among them: what causes the process to fail, leading to many cases of infertility.

8 Aug 2017

Researchers identify new genetic mutation that prevents sperm production

Researchers at Ben-Gurion University of the Negev and Soroka University Medical Center in Beer-Sheva, Israel have discovered a new genetic mutation that prevents sperm production.

3 Aug 2017

Researchers explore genetic differences, hereditary factors involved in hemiplegic cerebral palsy

Hemiplegic cerebral palsy hampers movement in one side of a person's body. In the first genetic study of its kind to exclusively focus on those with hemiplegic cerebral palsy, a group of 26 Canadian researchers has investigated the genetic differences and hereditary factors involved in this neurodevelopmental condition.

3 Aug 2017

In-depth tumor sequencing reveals key molecular drivers of metastatic cancers

Five hundred cancer patients are getting an in-depth look at their genomes as part of a new clinical study that is revealing some of the key molecular drivers of metastatic cancers.

3 Aug 2017

Study shows new method for repairing disease-causing mutation in human embryos

Scientists have demonstrated an effective way of using a gene-editing tool to correct a disease-causing gene mutation in human embryos and stop it from passing to future generations.

3 Aug 2017

Stowers researchers solve 3D structure of critical protein complex using microscopy techniques

Researchers at the Stowers Institute for Medical Research have solved the three-dimensional structure of a complex that is essential for the correct sorting of chromosomes into eggs and sperm during reproductive cell division or meiosis.

2 Aug 2017

Research shows great potential of embryonic gene editing to prevent inherited diseases

Scientists have, for the first time, corrected a disease-causing mutation in early stage human embryos with gene editing.

2 Aug 2017

US scientists make advances in modifying human embryos

American Scientists have managed to edit and improve the DNA of human embryos in an effort to correct the gene defects that cause inherited diseases.

27 Jul 2017

Effects of declining sperm counts on fertility, mortality and disease patterns in geographical areas: Study

There is a lack of definitive data on the actual trends of decline in sperm counts according to researchers despite it being a known fact. Researchers in a new study looked at a large population to find the exact data regarding this scenario and its effects on the society. They looked at the effects of fertility and geographical distribution on the sperm concentration as well as total sperm counts.

25 Jul 2017

Study provides insights into intergenerational inheritance of epigenetic information

We are more than the sum of our genes. Epigenetic mechanisms modulated by environmental cues such as diet, disease or our lifestyle take a major role in regulating the DNA by switching genes on and off.

18 Jul 2017

Mutations arising after conception may play vital role in autism

A study of nearly 6,000 families, combining three genetic sequencing technologies, finds that mutations that occur after conception play an important role in autism.

17 Jul 2017

Sperm News and Research

Further Reading

Fathers can influence offspring sex ratios, mice study shows

Bariatric surgery in men linked to frequent sperm aberrations and lower fertility rates

Mutations altering gene function play role in development of intellectual disabilities

Scientists question CRISPR human embryo editing claims

Average paternal age rises in the USA

Mammal embryos discard paternal mitochondria within days of fertilization, new study shows

Long non-coding RNAs could represent novel male infertility drug targets

Scientists use novel cell tracing method to describe testicular macrophages

Researchers investigate genetic mutations in sperm cells to help prevent birth defects

Tiny lab-grown structures that resemble amniotic sac may help in infertility research

Researchers identify new genetic mutation that prevents sperm production

Researchers explore genetic differences, hereditary factors involved in hemiplegic cerebral palsy

In-depth tumor sequencing reveals key molecular drivers of metastatic cancers

Study shows new method for repairing disease-causing mutation in human embryos

Stowers researchers solve 3D structure of critical protein complex using microscopy techniques

Research shows great potential of embryonic gene editing to prevent inherited diseases

US scientists make advances in modifying human embryos

Effects of declining sperm counts on fertility, mortality and disease patterns in geographical areas: Study

Study provides insights into intergenerational inheritance of epigenetic information

Mutations arising after conception may play vital role in autism

Advancing Neuroscience Research Through Collaboration and Patient-Centered Innovation

The impact of vibration on microscopy

How Omics Technologies Are Transforming Biological Research and Drug Discovery

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