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Tag: "formed" at biology news

Tendency to hair loss inherited from the mother

...team explains. "Either more androgen receptors are formed among the men affected, or the variant of the receptor which develops as a result of the genetic change is more stable and is not broken down so quickly. Both mechanisms can lead to the effect of the androgens becoming greater, which in turn brings a...

NHGRI targets 12 more organisms for genome sequencing

...Medicine for his work elucidating how memories are formed in the human brain using Aplysia as a model. The disease-carrying insect, Rhodnius prolixus, spreads Chagas' disease, caused by the parasite Trypanosoma cruzi,which is carried by the insect. Chagas' disease is prominent in Latin America, affecting a...

Researchers test new therapy for advanced melanoma

...rs were rejected. This indicates the immune system formed a memory response that recognized the melanoma cells as foreign and prevented tumor regrowth. "We were very encouraged by the results of the preclinical studies." Dr. Heller said. "We're hoping this translates into a beneficial treatment for patient...

NASA probe could reveal comet life, scientists claim

...interstellar dust at the time the solar system was formed some 4.6 billion years ago. "This material is quite porous, so it is daring again to predict that subsurface ponds or lakes form transiently due to heat penetrating the exterior crust. We can thus expect biology on comets to have similarities with a...

Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils

...ldn't be surprised if the land-based relationships formed independently of the older marine relationships." "In fact, studies of modern lichens demonstrate that the lichen symbiosis evolved many times," Taylor said. "The ability to form a symbiotic relationship between fungi and algae may have evolved lon...

Key to elephant conservation is 'in the sauce'

...$108,000 grant from the World Bank. The trust also formed two companies, the African Spices Company in Zambia, and the Chilli Pepper Company in Zimbabwe. Due to social and economic unrest currently raging in Zimbabwe, the trust's operations there have ceased, opting instead to continue production in Johanne...

Stem cell treatment improves mobility after spinal cord injury

...fter injury. In both groups, the early-stage cells formed into full-grown oligodendrocyte cells and migrated...treated seven days after the injury, myelin tissue formed as the oligodendrocyte cells wrapped around damaged neurons in the spinal cord. Within two months, t...

UN pours polio vaccine into Yemen amid outbreak

...EF said. The Global Polio Eradication Initiative, formed by WHO, UNICEF, Rotary International and the US Centers for Disease Control and Prevention, needed $50 million by July and $200 million for 2006, it added. UNICEF said polio has been losing its grip even on the exporting "reservoirs of transmission"...

Mapping neuron connections in the brain

...of neuron arbors, tremendously branched structures formed by neurons. Part of the difficulty in mapping lies in the complex structure of arbors. Amirikian has improved on past methods by developing a theoretical framework requiring only two-dimensional drawings of arbors. Such drawings are already availabl...

Speak up: Louder neurons form more connections

...l. Although the poorly-firing green neurons still formed extensive branching structures, which the research...nches eventually receded while neighboring neurons formed a large number of stable connections. When the fish were five days old, the green neurons had a smal...

Confirmation of human protein interaction data by human expression data

...l. Although the poorly-firing green neurons still formed extensive branching structures, which the research...nches eventually receded while neighboring neurons formed a large number of stable connections. When the fish were five days old, the green neurons had a smal...

Researchers discover mechanism for multiplying adult stem cells

...when he switched the gene on, the mice immediately formed tumors in the gut and in the skin where the gene was active. When he switched the gene off, the tumors subsided, demonstrating that the process is reversible. Discovering that simply flipping a single gene on and off has such an immediate effect on ...

Modified collagen could yield important medical applications

...s the peptides make themselves at home within gaps formed by loose collagen strands. This linkup opens the door to new medical treatments, Yu says, because it is easy to attach bioactive agents to the peptides. When the peptides bind with collagen, these attached agents can dramatically change the way coll...

Unusual antibiotics show promise against deadly 'superbugs'

...s the peptides make themselves at home within gaps formed by loose collagen strands. This linkup opens the door to new medical treatments, Yu says, because it is easy to attach bioactive agents to the peptides. When the peptides bind with collagen, these attached agents can dramatically change the way coll...

Breakthrough: Scientists create world's tiniest organic particles

...d." DeSimone, his colleagues, UNC and others have formed a new company, Liquidia Technologies Inc., with $2.5 million in angel funding and venture capital to further develop and commercialize the unique new technology. It is the second company for which DeSimone has been largely responsible. The first was...

Spiders help scientists discover how muscles relax

...re reveals how the helices of the myosin heads are formed and maintained and how the filaments are switched off due to interactions between the myosin heads Padron explained. "It also opens the way to understanding how the thick filaments are activated." The details of their model permitted the researcher...

'Punctuated' evolution in the human genome

...te biologists for years because it appears to have formed from the fusion of two mid-sized ape chromosomes, and it is the primary cytogenetic distinction separating humans and their evolutionary progenitors. Within this 700 Kb region of human chromosome 2, the researchers identified segments of DNA that or...

Micro-molecule plays big role in birth defects

... as the heart, the gut and the lungs, haven't even formed yet. Now we can bypass the problem of early mortality and study the structures as they develop. It's a new tool for the genetic researcher's toolbox." No more than five years ago, microRNAs were considered to be little more than light seasoning in t...

Physical and functional interaction of key cell growth molecules linked to cancer

...athway. The researchers conclude that the complex formed by EGFR and STAT3 can directly regulate gene expression and provides a new transcriptional mechanism that may play a significant role in human cancers, transducing cell signals from outside the cell into the nucleus. According to Dr. Hung, "As in OS ...

A slight difference and significant similarities

...ed substances. Inulin is a polysaccharide that is formed as a storage molecule in many plants such as chicory, artichokes and dandelions. Two different genes for the formation of inulin sugars were introduced into the potato as these polysaccharides have a beneficial effect on human intestinal flora and ar...

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