Tag: "basal" at biology news

Rise of dinosaurs in Late Triassic more gradual than once thought

...rs diversified. "Finding dinosaur precursors, or basal dinosauromorphs, together with dinosaurs tells us something about the pace of changeover," Irmis said. "If there was any competition between the precursors and dinosaurs, then it was a very prolonged competition." An alternative hypothesis held tha...

Scientists identify 2 distinct Parkinson's networks

...st networks to be identified were no surprise: The basal ganglia, thalamus and brain stem that regulate movement. The scans they used measured glucose metabolism the brains fuel and identified areas in this motor network that showed decreased metabolic activity and some areas that had increased metabolic...

Personalized approach to ovarian stimulation achieves high ART pregnancy rates

...upon four easily measured patient characteristics: basal level of FSH in early spontaneous cycle, age (less than 35 years old), body mass index and antral follicle count in early spontaneous cycle. However, we still have more work to do before the algorithm can be used for all patients in the clinic. F...

New genetic data overturn long-held theory of limb development

...al-like pattern of Hox expression in the fins of a basal actinopterygian fish," shows that the genetic and developmental toolkit that builds limbs with fingers and toes was around long before the acquisition of limbs, according to the scientists, and that this toolkit exists in some primitive form in a liv...

Tropical birds have slow pace of life compared to northern species, study finds

...ed 69 species of tropical birds and measured their basal metabolic rate (BMR) the minimum amount of energy they expend at rest, solely to maintain their vital bodily functions. This was the largest data set ever collected of metabolic rates of tropical birds. They compared these measurements with the BM...

Scientists develope a new model of artificial canine skin

... and an internal layer, the dermis, separated by a basal membrane. A study of the interactions between the ...sion as that of normal canine skin, even forming a basal membrane, which also maintains the characteristics of conventional skin....

News tips from the Journal of Neuroscience

...ne the impact of Arx loss-of-function mutations on basal ganglia structures. Arx is expressed in progenitor cells and neurons of the lateral and medial ganglionic eminence (LGE and MGE), which give rise to the striatum and pallidum, nucleus basalis as well as cortical interneurons. Arx-deficient mice die s...

Motile Cilia go with the flow

...es arranged in 9 doublets around a central pair. A basal body anchors these microtubules inside the cell. A so-called basal foot, which invariably points in the direction of the effective stroke, juts out at the base of each...

News tips from ACS Chemical Biology

... About insight into diseases like psoriasis and basal cell carcinoma by developing an artificial way to induce keratinocytes, a type of skin cell precursor, to differentiate. ...

Biologists call for better choice of model organisms in 'evo-devo'

...nection to this practice, the researchers point to basal bias as another way that scientists may get it wro... a particular common ancestor, those designated as basal are those that are separated from this ancestor by the smallest number of speciation events. "Som...

Researchers find suntan's 'master regulator'

... skin pigmentation, the researchers examined human basal cell carcinomas, one of the most common forms of skin cancer. The cancer is pigmented in some patients, but not others, they knew.In every case they found that the pigmented cancers harbored a normal p53 gene, while the nonpigmented samples harbored ...

Joslin study reveals how a specific fat type can protect against weight gain and diabetes

...ot. This study began by exploring differences in basal energy expenditure (the amount of energy required ...s showed that this difference is due to the higher basal energy expenditure in the 129 mouse. When searching for the source of the energy expenditure, the re...

Gene profiling predicts resistance to breast cancer drug Herceptin

...hat did not respond to Herceptin expressed certain basal markers, growth factors and growth factor receptors. One of these, insulin-growth factor receptor 1(IGF-1R), was associated with a Herceptin response rate that was half that of tumors that did not express IGF-1R. They also discovered that resistant...

Decision-making -- Demonstration of a link between cognition and execution

...our understanding of the physiological role of the basal ganglia and, more specifically, of Parkinson's di...e) and motor information. It is supposed that the basal ganglia play an essential role in these processes. However, the underlying mechanisms are still gen...

Lipid plays big role in embryonic development

...ournal of Biological Chemistry. "In this case, the basal end, or lower end, is attached to the outer layer while the apical end points toward the sphere's cavity." Cells make ceramide, which researchers are finding has many different jobs in the developing and mature body. Like other lipids, it helps mak...

News tips from the Journal of Neuroscience

...mission in the substantia nigra pars reticulata, a basal ganglia output structure that sends GABAergic projections to the VM. The intranigral block eliminated SWDs and converted the firing pattern in VM neurons from burst firing to sustained arrhythmic firing. Cortical neuron activity also was reduced, poi...

Selective marker found to indicate aggressive form of breast cancer

... could represent a selective biological marker for basal epithelial breast tumors, a highly aggressive canc...irect means of determining if a breast cancer is a basal epithelial tumor doctors only know for certain once the other forms of breast cancer are ruled out,...

Study finds oysters can take heat and heavy metals, but not both

...vant levels, as the organism spends more energy on basal maintenance, Sokolova said. Metabolism also incr...ive in energetic terms, so when energy demands for basal metabolic maintenance increase during temperature stress, less is left over for other functions such...

News tips from the Journal of Neuroscience

...iring pattern. Because MSNs are the major input to basal ganglia, such state-dependent changes in firing patterns are likely to have a major influence on basal ganglia function. 4. A Clue to Gender Influences on Depression Lisa M. Hines, Paula L. Hoffman, ...

Yale Cell Biologist Joel Rosenbaum, to receive Prestigious Wilson Award

...g the cilia to shorten, and permitting the ciliary basal bodies/centrioles to migrate to the center of the ... all stem from defects in the cilia or the ciliary basal body/centriole. It seems as though, each month a new disease is shown to have its origin in these of...

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(Date:4/17/2014)... stem cell therapies to cure a variety of diseases ... based on cell surface markers. Researchers from the Finnish ... highly expressed in a type of stem cells derived ... an article in BioResearch Open Access , a ... article is available free on the BioResearch ...
(Date:4/17/2014)... developed at Sandia National Laboratories and recently licensed to ... cheaper. , Bacillus anthracis , the bacteria ... over the world and can cause serious, and often ... can survive in harsh conditions for decades. In humans, ... skin contact, inhalation of spores or eating contaminated meat. ...
(Date:4/17/2014)... produce hydrogen sulfide in order to properly multiply and ... the Center for Craniofacial Molecular Biology at the Herman ... Shi, principal investigator on the project, said the presence ... flow of calcium ions. The essential ions activate a ... the creation of new bone tissue, and keeps the ...
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