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Polarity in Medical News

CSHL scientists show how a protein that determines cell polarity prevents breast cancer

In breast tissue, cells lining the breast's ducts have a certain shape that is required to maintain both organ structure and function. All breast cancers display a loss of this characteristic organization, but very little is known about the molecules and pathways that regulate tissue structure and...

Hypertension & cholesterol medications present in water released into the St. Lawrence River

... release locations of wastewaters treated by the treatment stations are the main source of drug dispersion into the environment. Because of their high polarity and their acid-base character, some of the pharmaceutical compounds studied have the potential to be transported and dispersed widely in the aquatic e...

Hydra Booster Energizes Ordinary Drinking Water for Better Absorption and Optimum Hydration, Stopping Symptoms of 'Hidden' Dehydration

... vibration, tuning it to the ideal frequencies and polarity needed to hydrate, detoxify and energize the human...ndent on water in its purest state, with a natural polarity and a wide spectrum of electromagnetic frequencies... drinking water to energize water with the natural polarity and super-high frequencies needed to optimize hydr...

Lipid Plays Big Role in Embryonic Development

... most likely regulates,” says Dr. Bieberich. “Cell polarity is absolutely essential for differentiation; other...hat ceramide plays a key role in establishing cell polarity by attracting proteins involved in polarity to the top of the cells then triggering a series o...

Ceramide Directs Stem Cells in Embryo

... most likely regulates,' says Dr. Bieberich. 'Cell polarity is absolutely essential for differentiation; other...hat ceramide plays a key role in establishing cell polarity by attracting proteins involved in polarity to the top of the cells then triggering a series o...

Run Amok Enzyme Causes Same Problems in Both Humans and Fruit Flies

...ation into neurons and neuroblast self-renewal (aPKC) are not sorted to their proper sides of the cell, and the mitotic spindle that provides cortical polarity becomes misaligned. The subsequent splitting leads to new cells with improper proteins mixes, including an overproduction – in this case 10 times more...

New findings, throw light on obesity

...re involved in appetite control could be defective. He also said that BSS proteins present in the cilia are involved in a pathway known as planer cell polarity (PCP). It is this pathway which directs the cells to orient themselves in the embryo consequently on how the entire organism becomes arranged. Fur...

Have You Ever Wondered How We Perceive Different Sounds?

...P pathway is involved in shaping the cochlea and the sensory hair cells. Mutations within this genetic pathway impair the shape of the cochlea and the polarity of the sensory hair cells that are essential for hearing. ...

New Treatment For Headache

...turn off the pain. Specialists say , each nerve has a positive and negative charge to it, and by stimulating those nerves, you can kind of reverse the polarity of the nerves. In patients who are good responders, this is a lifesaver. “It’s given me a whole new life," Eric says. "I feel like I started all over....
Polarity in Medical Products

Handle for bar electrodes

Description:...ge body for increased stability and solid, machined contacts (spaced 3 centimeters center-to-center) to resist the wear and tear of repeated cleaning. polarity indicators are molded into the body. The convenient, snap-on handle fits our bar electrode styles. Shielded bar electrodes are also available....
Company:Cadwell Laboratories, Inc.

Replacement felt pads

Description:...ge body for increased stability and solid, machined contacts (spaced 3 centimeters center-to-center) to resist the wear and tear of repeated cleaning. polarity indicators are molded into the body. The convenient, snap-on handle fits our bar electrode styles. Shielded bar electrodes are also available....
Company:Cadwell Laboratories, Inc.

Felt-pad bar electrode

Description:...ge body for increased stability and solid, machined contacts (spaced 3 centimeters center-to-center) to resist the wear and tear of repeated cleaning. polarity indicators are molded into the body. The convenient, snap-on handle fits our bar electrode styles. Shielded bar electrodes are also available....
Company:Cadwell Laboratories, Inc.

Concave bar electrode

Description:...ge body for increased stability and solid, machined contacts (spaced 3 centimeters center-to-center) to resist the wear and tear of repeated cleaning. polarity indicators are molded into the body. The convenient, snap-on handle fits our bar electrode styles. Shielded bar electrodes are also available....
Company:Cadwell Laboratories, Inc.

Single-Chamber Model 5348 External (Temporary) Pulse Generator

Description:...thesiologists. And, they are of the quality and durability you expect from Medtronic. Effective pacing with the adjustment of dials. Reverse battery polarity for quick battery changes. Both the dual- and single-chamber temporary pacemakers offer rapid atrial pacing for managing atrial tachyarrhythmias. Th...
Company:Medtronic Inc.

Dual-Chamber Model 5388 External (Temporary) Pulse Generator

Description:...thesiologists. And, they are of the quality and durability you expect from Medtronic. Effective pacing with the adjustment of dials. Reverse battery polarity for quick battery changes. Both the dual- and single-chamber temporary pacemakers offer rapid atrial pacing for managing atrial tachyarrhythmias. Th...
Company:Medtronic Inc.

Victory® XL DR Model 5816

Features:...icular Beat-by-Beat capture confirmation. Victory has a programmable polarity switch which can be programmed to on, so it can automatically change the pacing and sensing polarity to unipolar for the patients safety if the device detects an out of range m...
Company:St. Jude Medical, Inc.

Victory® SR Model 5610

Features:...icular Beat-by-Beat capture confirmation. Victory has a programmable polarity switch which can be programmed to on, so it can automatically change the pacing and sensing polarity to unipolar for the patients safety if the device detects an out of range m...
Company:St. Jude Medical, Inc.

Victory® DR Model 5810

Features:...icular Beat-by-Beat capture confirmation. Victory has a programmable polarity switch which can be programmed to on, so it can automatically change the pacing and sensing polarity to unipolar for the patients safety if the device detects an out of range m...
Company:St. Jude Medical, Inc.

Regency Pacemaker

Features:...arch counter Intrinsic rate vs. time graph Electrophysiology lab Event markers Event counters Vario threshold test Rate hysteresis Programmable polarity Intrinsic rate and lead impedance vs. time graphs Sensed and paced event counters Electrophysiology lab function Vario threshold test and automati...
Company:St. Jude Medical, Inc.
Polarity in Medical Dictionary

Caloric stimulation

...s, expectations, special considerations, normal and abnormal values, and ... If warm caloric stimulation is used, one has to bear in mind that polarity is ... caloric stimulation will activate the Right hemisphere with the subject in the ... Caloric stimulation occurs, when a cold or war...
Polarity in Biological News

How an enzyme tells stem cells which way to divide

...said, adding that the mechanism likely is similar in many other types of cells, not just stem cells. "It's a basic-research question. How does this polarity occur? In order to develop stem cell-specific therapeutics based on a rational methodology you have to understand the mechanism," he said. If Miran...

Evidence of the 'Lost World' -- did dinosaurs survive the end Cretaceous extinctions?

.... The first step must be to demonstrate that the rocks containing the bones are younger than the extinction event. Fassett has analysed the magnetic polarity of the rocks, and the pollen grains they contain, different approaches to finding the age of rocks which, he concludes "independently indicate that th...

Weizmann Institute scientists show extra copies of a gene carry extra risk

... study shows that it works by helping to determine polarity in the cell how the various organelles are arrang...connects to neighboring cells. Neurons alter their polarity several times during development, especially when ... they discovered a range of subtle changes in cell polarity and movement: Nuclei within the proliferating zone...

Hypertension and cholesterol medications present in water released into the St. Lawrence River

... release locations of wastewaters treated by the treatment stations are the main source of drug dispersion into the environment. Because of their high polarity and their acid-base character, some of the pharmaceutical compounds studied have the potential to be transported and dispersed widely in the aquatic e...

January-February GSA Bulletin media highlights

.... Peppe et al., Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06511, USA. Pages 65-79. To determine the geomagnetic polarity stratigraphy and the duration and age of the Ludlow Member of the Fort Union Formation (Lower Paleocene), Peppe et al. constructed a 325 meter composi...

Rare genetic disorder gives clues to autism, epilepsy, mental retardation

...ut from other neurons). This specification of axons and dendrites, known as polarity, is crucial for proper information flow. "We think if initial polarity is not formed properly, the result will be abnormal connectivity in the brain," says Sahin, who also directs the clinical Multi-Disciplinary Tuberous ...

Simulations help explain fast water transport in nanotubes

...wo hydrogen atoms and one oxygen atom. Although its net charge is zero, the molecule has a positive side (hydrogen) and a negative side (oxygen). This polarity causes the molecule to orient in a particular direction when in the presence of an electric field. Creating and maintaining that orientation, either...

Synthetic molecules emulate enzyme behavior for the first time

... image forms." Despite decades of research, scientists aren't sure exactly how this kind of propagation works. It may have something to do with the polarity of different parts of the molecule, or the chemical environment around the edges of the molecule. But Parquette says the new study demonstrates tha...

Simple model cell is key to understanding cell complexity

...xture of lipid molecules. Some of these lipid molecules contained tiny pieces of PEG, which interacted with the PEG in the cytoplasm, thus generating polarity in the model cell. "Our work demonstrated the interrelationship of the cytoplasm and the cell membrane," said Keating. The team's next step is to ...

Salk scientists identify key nerve navigation pathway

...agellan mutants. As a result, cells lose their polarity. They literally do not know the front end from the back end, according to Pfaff. This sense of polarity is a universal feature common to all growing neurons. Therefore, Phr1 is likely to play a role in most growing neurons to ensure their structure is re...
Polarity in Biological Technology

Waters Corporation Continues to Meet Today's Challenges for Improved Laboratory Operations with New Products at Pittcon 2009

... tandem quadrupole mass spectrometer. With this added flexibility, scientists can analyze volatile and semi-volatile compounds of low and intermediate polarity traditionally analyzed by dedicated GC/MS instruments. Switching from an electrospray ionization source in LC/MS/MS mode to the APGC source for G...

Experts at Healthcare Conference Support Investments in the Health of Work Culture and Care Processes, Not Just Technology

... the CPMRC event heard the value and need for transforming the health of work cultures, advancing the foundational skills of dialogue, partnership and polarity Management(TM), to successfully integrate and speed adoption of new technology to co-create the best places to give and receive care. Spending money o...

Fiber-based nanotechnology in clothing could harvest energy from physical movement

...ed several tests. They tried rubbing gold fibers together, and zinc oxide fibers together, neither of which produced current. They also reversed the polarity of the connections, which changed the output current and voltage. By allowing nanowire growth to take place at temperatures as low as 80 degrees Ce...

Researchers measure carbon nanotube interaction

...awrence Livermore National Laboratory researchers and colleagues found that the interaction strength does not follow conventional trends of increasing polarity or repelling water. Instead, it depends on the intricate electronic interactions between the nanotube and the functional group. This work pushes c...

TSKgel ODS-100Z and TSKgel ODS-100V column series provides a universal solution for the analysis of samples containing acidic, basic, polar & non-polar compounds

...ted in Figure 2 . Hydrophobic and Polar Compounds: The hydrophobicity and surface polarity of both stationary phases are represented in Figure 3 . The TSKgel ODS-100V has more polar properties than most recently releas...

Novel Bonding Chemistry Imparts Enhanced Polar Selectivity to TSK-GEL ODS-100V Reversed Phase Columns

...ould be obtained for polar solutes while maintaining the operating characteristics of traditional reversed phase columns. Adding polarity to the bonded alkyl phase also overcame 'bonded phase collapse', the steady decline of retention times under (near) aqueous mobile phase ...

Whole Gel Eluter Purification of a Functional Multiprotein DNA Replication Complex, Rev A

... mA for an additional 2 hours. The proteins bound to the cellophane membrane at the end of elution were removed by reversing the polarity of the eluter cell and continuing electrophoresis for 30 seconds at 100 volts. The eluted fractions were harvested, with each fr...

RNA Interference and Gene Silencing: History and Overview

...w.emboj.org/cgi/content/full/16/15/4738">Article ) Guo S, and Kempheus KJ. (1995). Par-1 , a gene required for establishing polarity in C. elegans embryos, encodes a putative Ser/Thr kinase that is asymmetrically distributed. Cell 81 : 611-620. (

FLIM System from Hamamatsu Photonics

Description:... be captured and the lifetime of the decay measured. Subtle changes in the local environment of a fluorescent molecule such as pH, ion concentration, polarity and viscosity produce changes in the lifetime of the fluorescence decay. Molecular non-radiative energy transfers (FRET) also cause detectable change...
Company:Hamamatsu Photonics

LCMS-2010EV from Shimadzu Biotech

Description:...illary and prep scale separations. It incorporates a drying gas system to create a finer spray mist for high sensitivity, especially for low-to-medium polarity compounds, while providing for high reliability, lower source contamination, and reduced adduct formation. The optical design incorporates patented io...
Company:Shimadzu Biotech

LTQ XL Linear Ion Trap from Thermo Scientific

Description:...) Extensive coverage for predicted and unpredicted metabolites Fast polarity switching for high-sensitivity analysis of unknowns Intelligent Data De...sfer Dissociation (ETD) Option High Resolution Isolation Ultra-fast polarity Switching MS^15 In combination with new software packages, t...
Company:Thermo Scientific

NeuroCyte - Rat Neural Stem Cell Kit from Orion BioSolutions, Inc.

Description:...ffects of test molecules on neural stem and progenitor cell differentiation. Unlike neurospheres, Orions adherent culture allows for the normal planar polarity found in areas like the SVZ, where undifferentiated neuroepithelial sheets provide an anchor for directed radial glial cell process extension and subs...
Company:Orion BioSolutions, Inc.
Polarity in Biological Definition

Diffusion

...espiratory system 2.1.2 Facilitated diffusion 2.1.3 Net flux 2.1.4 polarity 2.1.5 Ions 2.2 Diffusion in chemical engineering 2.3 Atomic d...ve transport. Net flux Net flux is used to measure diffusion. polarity Nonpolar molecules diffuse faster through the lipid portion of the membra...

Morphogenesis

...onverting it to a cellular blastoderm. Wingless morphogen The expression patterns of the final class of segmentation genes, the segment polarity genes , are then fine-tuned by interactions between the cells of adjacent parasegments (see the example, engrailed , to the right). The Engrailed p...

Morphogenesis

...onverting it to a cellular blastoderm. Wingless morphogen The expression patterns of the final class of segmentation genes, the segment polarity genes , are then fine-tuned by interactions between the cells of adjacent parasegments (see the example, engrailed , to the right). The Engrailed p...
Polarity in Biological Dictionary

Polarity

Chemical polarity , a concept in chemistry which describes how equally bonding ... Grammatical polarity , the distinction of affirmative and negative ... In chemistry, polarity refers to a separation of electric charge leading to a molecule having an electric dipole. Polar molecules ca...

Sense strand

...tides are RNA instead of DNA. This initial RNA... Sense , when applied in a molecular biology context, is a general concept used to compare the polarity of nucleic acid molecules, such as DNA or RNA, to other nucleic acid molecules. Depending on the context within molecular... Sense (molecula...

Pericycle

...e tissue ... Lateral roots initiate from internal cells of the pericycle . ... A small group of pericycle cells reorient their axis of polarity to the radial ... A. epidermis B. cortex C. endodermis D. pericycle ... D. pericycle * Which of the following plants has a single ring o...

Molecule

...joined by shared ... polyatomic molecule ... A tutorial on molecule polarity suitable for use by high school ... polar molecule has ... Shapes of Molecules . Electronegativity and Bond polarity ... A molecule is the smallest particle in a chemical element or comp...

Dorsal

... dorsal surfaces of the body are the back, buttocks, calves, and the ... Dorsal (DL) is the focal protein in the development of dorsoventral polarity in ... The dorsal group comprises a whole class of genes acting in the mother and ... Information about dorsal in the free online English di...

Anti-sense strand

... Sense , when applied in a molecular biology context, is a general concept used to compare the polarity of nucleic acid molecules, such as DNA or RNA, to other nucleic acid molecules. Depending on the context within molecular... Antisense RNA i...
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