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Tag: "growth" at biology news

Scientists turn tobacco against cancer

...nt-derived antibodies. Then they watched for tumor growth for as many as 40 days. The researchers found that tumor growth was inhibited in a similar manner to that of mammalian-made monoclonal antibodies, Dr. Ko says. “Th...

Scientists find microRNAs regulate plant development

...o as auxin, plays a major role in regulating plant growth and development. Auxin influences development by affecting the expression of numerous genes that control the processes of cell division and cell expansion in specific plant tissues at specific stages during the plant life cycle - e.g. for leaves, roo...

Wild grasses and man-made wheats advance research capabilities

...trong seed for rapid stand establishment and early growth in the fall." These synthetic spring wheat varieties must be backcrossed to make them winter wheats, he said. Then they can be looked at for other characteristics. "If we find something useful in the wild, we may make a synthetic hexaploid from it, ...

Unexpected lock and key mechanism found for the assembly of tumor blood vessels

...h that promises to lead to a new way to halt tumor growth by cutting off the tumor blood supply. The resear...rmal angiogenesis process to initiate blood vessel growth to fuel the growth of tumors, researchers believe that blocking angiogenesis may choke off a tumor's...

New complete muscle grown in the lab

...e researchers were able to significantly boost the growth of the blood vessel network forming within the muscle tissue. Thanks in part to the stabilizing influence of the fibroblasts, the surface area covered by vessel cells and the percentage of vessel-like structures in the tissue doubled within two weeks...

Study shows how retinoic acid enters a cell's nucleus

... by increasing CRABP-II levels within cells, tumor growth rates slow dramatically. The protein transfers RA ...iciently to the cell's nucleus. In this way, tumor growth may be inhibited using naturally occurring levels of RA, as opposed to the toxic doses currently adm...

OHSU research shows vitamin C counteracts some negative impacts of smoking on unborn babies

...ing during pregnancy can cause premature delivery, growth retardation and has been blamed for 5 percent to 10 percent of all fetal and neonatal deaths. Maternal smoking can also cause decreased pulmonary function and increased respiratory illness in offspring. Previous research by the Spindel lab demonstrat...

Divergent life history shapes gene expression in brains of salmon

...g differing activity levels. "It makes sense that growth genes are suppressed in sneakers and genes associated with reproduction are expressed more, since these fish essentially trade bodily size for faster reproductive maturity," she says. "However, it was unexpected, for instance, that genes associated w...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

... marginalization of the dryland poor, and the slow growth of health and education infrastructure. "The cross boundary nature of the problem makes desertification a global concern ?one that receives too little attention," says co-author Zafar Adeel, Assistant Director of the United Nations University water ...

Most common lung cancers may begin in newly discovered cells

... lung cells, the activated oncogene only triggered growth of the BASCs, not of the more specialized alveolar cells. "The stem cells may retain mutations from the same damage that kills the more specialized cells," Bender Kim speculates. "If the DNA is not repaired properly, and if the mutation happens to a...

Scientists focus on 'dwarf eye'

...ation in a gene called MFRP that helps control eye growth and regulates the organ's shape and focus. The stu...ts clearly, respectively -- stems from the complex growth of the human eye. All human eyes have a slight degree of farsightedness at birth. As the child grows...

Missing Receptor Molecule Causes Tumor Growth

A missing receptor molecule contributes to the growth of tumors in human ovaries. This surprisingly evident connection has now been proven by a team at the Medical University of Vienna, who published their data in the science journal Molecular Cancer Research. The team, who is supported by funding from ...

Nanoparticles carry cancer-killing drugs into tumor cells

A missing receptor molecule contributes to the growth of tumors in human ovaries. This surprisingly evident connection has now been proven by a team at the Medical University of Vienna, who published their data in the science journal Molecular Cancer Research. The team, who is supported by funding from ...

Fruit fly studies open new window on cancer research

...y of a cell to a hormone that can trigger abnormal growth and cancer. Their discovery could lead to a comple... the development of new drugs to stop uncontrolled growth in a wide variety of tumour cells. The researchers at the University of Oxford, funded in part by t...

A new molecule discovered in the battle between plants and disease

...e plants, evidenced by a more robust leaf and root growth upon infection. ProAtPep1 belongs to a seven member gene family in Arabidopsis with tissue-specific paralogs that exhibit differential expression profiles. Orthologs of the proAtPep1 gene have been identified in important crop species including canol...

New lead reported in tumor angiogenesis

... ago studying a secreted protein called hepatocyte growth factor, or HGF, and its role in helping head and n...eins such as the much-studied vascular endothelial growth factor, or VEGF, which clearly plays a role in tumor angiogenesis," said Wang. "To date, though, non...

Stem Cells Found In Cerebellum; Possible Cell of Origin for Childhood Brain Tumors

...ty to divide indefinitely in response to stem cell growth factors; and their ability to generate all the maj...t to shut down its activity without disrupting the growth of normal cells," he said. "Chemotherapy targets all dividing cells ?not just those involved in canc...

Slipping past the blood brain barrier: Research shows potential treatment for brain cancer

...d - JV-1-36 - is an antagonist of the hypothalamic growth hormone- releasing hormone, which has been found t... grow. The main known purposes of the hypothalamic growth hormone-releasing hormone usually are to trigger the hormone that makes children grow and affect how...

Penguin chicks exposed to human visitors experience spike in stress hormone

... of short-term negative effects, such as different growth rates or weight differences at fledging, caused by distinct differences in corticosterone levels between newly hatched chicks in tourist and non-tourist areas of the reserve, Walker said. But it is unclear what later effects the elevated stress hormo...

Logging changed ecological balance for monkeys, damaged health

...covery of the forest also has been hampered by the growth of acanthus, an invasive shrub that has overwhelme...the clearings, adding yet another obstacle for the growth of new trees, he said. "Knowledge of how particular species are affected by various forms of ecolog...

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