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Tag: "parent" at biology news

Enzyme delivered in smaller package protects cells from radiation damage

...OD in a full-sized plasmid. They also irradiated a parent mouse cell line that had not been transfected with MnSOD. After irradiation, the cells were plated in a growth medium and incubated at body temperature for 7 days at which time colonies of greater than 50 cells were counted. The MnSOD transfected...

'Lucky 13' as new gene discovery offers further hope for childhood blindness

... common, such as the Pakistani community. "If a parent is found to carry a mutation in the LCA5 gene, the...ldren is still virtually zero as long as the other parent does not carry it," says Professor Inglehearn. "The odds of two parents both carrying the same or di...

Children of smokers have more than 5 times higher levels of a nicotine toxin

Children who have at least one parent who smokes have 5.5 times higher levels of cotinin... weeks. Seventy one of the babies had at least one parent that smoked and the parents of the other 33 were non-smokers. The authors say: ‘Smoking babies t...

Eavesdropping comes naturally to young song sparrows

...e, most work has focused on interactions between a parent and an infant, but infants may learn language in part by eavesdropping on conversations between their parents or a sibling, Beecher said. "Do kids learn from parents talking to them or from other people talking and interacting" We don’t know. W...

Early exposure to indoor fungus molecules may protect infants against future allergies

...ter risk for future allergies because at least one parent had known allergies. The CCAAPS, funded by the National Institute of Environmental Health Sciences, is a five-year study at UC examining the effects of environmental particulates on childhood respiratory health and allergy development. UC rese...

Study finds antibiotic resistance in poultry even when antibiotics were not used

...studies is what's known as vertical transfer ?from parent to child ?of bacteria carrying resistance genes. In short, the birds may come to the farm harboring antibiotic resistant bacteria. "This issue of antibiotic resistance is more complicated than once thought," Lee said. "These findings suggest that...

Penn researchers replace organ in adult mice using 'single-parent' stem cells

...r, require two sets of chromosomes - one from each parent - to create a functioning embryo.According to McLa...ntists found that uniparental cells, regardless of parent of origin, were able to functionally replenish the entire blood-producing system of adult mice. ...

Walking molecule now carries packages

...ing cellulose from wood into paper. It is also the parent substance of a large class of dyes and pigments. Its chemical formula is C14H8O2. The UCR study used a scanning tunneling microscope in Bartels's laboratory that gives a precise picture of individual molecules. Experiments took place on a highly po...

Encouraging results in pancreatic cancer research

...de." Dr. Pincus added that this peptide and its parent peptide, called PNC-27, are lethal to a wide variety of human cancer cells, besides pancreatic cancer, including colon, breast, cervical and bone (osteogenic sarcoma) cancers. These peptides kill cancer cells that do not even contain native p53 prote...

'Empty nester' parent birds use recruitment calls to extend offspring care

...hers have discovered a surprising new way in which parent birds can extend the period of their care of offspring. The findings are reported by Andrew Radford of the University of Cambridge and Amanda Ridley of the University of Cape Town and appear in the September 5th issue of Current Biology, published by...

Inheritance outside DNA

...o generation, carrying instructions related to the parent from whom that copy was inherited but without altering the DNA. Abnormal methylation patterns in cancerous cells were discovered more than 20 years ago. Yet tumor cells have so many things wrong with them, including methylation abnormalities, tha...

Researchers discover new gene responsible for brittle bone disease

...cessive forms accounting for recurrence. When each parent has one mutated gene and one normal gene, they have one-in-four chance of having a child with osteogenesis imperfecta. Funding for the research came from the National Institutes of Health, the Baylor College of Medicine Developmental Disabilities ...

Parental genes do what's best for baby

...e one parent’s copy; the spare copy from the other parent is silenced by a chemical stamp.? The concept of imprinting has long puzzled scientists as it appears to undermine the natural benefits organisms gain from inheriting two sets of genes. If one copy of a gene is damaged, for instance, then the se...

Viral marker of human migration suspect

... If the virus had been strictly passed down from parent to child and had kept step with human migration, one would expect the various subtypes to group together geographically, she explains. Shackelton added that if the co-evolution of the virus and human populations were as strict as previously thoug...

What controls stickiness of 'smart' chromosomal glue

...d, must contain only half the chromosomes of their parent cells, so that the normal chromosome number will be restored when the sperm and egg unite during fertilization. To achieve this, they are produced through meiosis. Gluelike protein complexes called cohesins, which hold the members of a chromosome p...

Study provides new understanding of spontaneous hybridization

...ginal hybridization event by manually crossing two parent species. Not only were these hybrids resistant to the insects that attack sunflowers, they also produced more seeds than the uncrossed plants. "The results show for the first time that adaptive trait introgression can be a potent evolutionary force...

Proteins as parents

...sist the pressure of the inflowing blood. As the parent generation, the scientists chose two globular titin domains called I27 and I32, whose mechanical properties have already been intensively researched. Both are similarly built and are composed of the protein segments A, A', as well as B to G. The rese...

Non-coding RNAs help silence the mammalian transcription

...differential expression of a gene based upon which parent it has been inherited from, is integral to normal growth and development. Two human disorders, Prader-Willi and Angelman syndromes, result from the deletion of the identical portion of chromosome 15. Imprinting determines which disorder arises: When ...

Gene therapy injected into the brains' of mice with Huntington's disease

...be destined to get HD. "Each child of an affected parent has a 50 percent risk for inheriting the disease. Genetic testing can identify mutated gene carriers destined to suffer from HD. Unlike other neurodegenerative disorders, identification of the genetic markers provides a unique opportunity to interce...

Invasive species alter habitat to their benefit

...brid of the two species that is larger than either parent and tolerates a wider range of environmental conditions. In the marshes she studied, Farrer found that hybrids were more common than native cattails. She also noted that the areas of each marsh with lots of hybrid cattails had higher nutrient leve...

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