Microbeam laser-injured neurons increase in vitro astrocytic gap junctional communication as measured by fluorescence recovery after laser photobleaching

losing fat in certain areas, all the dieting and exercise in the world is sometimes not enough. Fact...

very simple way to make a laser

Infections from laser hair removal treatments are rare, but can occur if the patient has a history o...

www.londonvisionclinic.com presents Professor Dan Reinstein talking about how the laser used in lase...

Professor Keyvan Moghissi developed the use of lasers in medicine with the support of the Laser Trus...

Americans annually spend billions of dollars undergoing various types of procedures to improve their...

will gather for their annual meeting to unveil the latest breakthrough in skincare. Joining us, Dr. ...

The London Vision Clinic, is a laser eye surgery clinic in London. The clinic places great emphasise...

Vesalius robot provides both remote center of motion and adjustment functionalities in its mechanism...

www.lamfacialplastics.com WIN $5000 CASH!, visit http for details. Just send Dr. Lam your best idea ...

A microbeam is a narrow beam of radiation, of micrometer or ...

Laser Design Inc. is a company headquartered in Minneapolis,...

Laser War is the first pinball machine that was produced by ...

Laser Inc is a two-person Swedish Eurodance band. The band's...

The NeXT Laser Printer [NeXT PN N2000] was a 400 DPI PostScr...

Two iliac crest needle biopsies were taken from a 43-year-old lead-poisoned woman during and after completion of a Ca-EDTA treatment. By atomic absorption spectroscopy the first and second biopsy were found to contain 56, respectively 41.6 micrograms lead/g wet tissue. In both biopsies 36% of the lead was extractable in 0.1 N HCl. Electron microbeam X-ray analysis proved to have too low sensitivity for quantitation of the lead in these biopsies. Laser microbeam mass analysis (LAMMA), performed only on the second biopsy, revealed a high and fair...

An important aspect of the neuronal-astrocyte relationship is the interaction of reactive astrocytes with injured and/or dying neurons. Few studies have focused on the signaling of astrocytes by injured neurons or on the possibility that neurons can alter astrocytic gap junctional communication. The purpose of this study was to determine whether the presence of injured neurons could alter astrocytic gap junctional coupling by establishing an in vitro method of microbeam laser neuronal injury and coculturing these neurons with astrocytes. Neuron...

Microbeam laser-injured neurons increase in vitro astrocytic gap junctional communication as measured by fluorescence recovery after laser photobleaching. Anders JJ, Woolery S. Department of Anatomy and Cell Biology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814. An important aspect of the neuronal-astrocyte relationship is the interaction of reactive astrocytes with injured and/or dying neurons. Few studies have focused on the signaling of astrocytes by injured neurons or on the possibility that neurons can ...

Abstract Using time-resolved imaging, we investigated the lysis of confluent PtK2 cell cultures by pulsed laser microbeam irradiation. Images obtained at time delays of 0.5 ns to 50 µs demonstrate lysis to be mediated by laser-induced plasma formation resulting in pressure wave propagation and cavitation bubble formation. Image analysis enabled quantitative characterization of the pressure wave and cavitation bubble dynamics. The zone of cell damage exceeded the plasma size and serves to implicate cavitation bubble expansion as the primary age...

Abstract Using time-resolved imaging, we investigated the lysis of confluent PtK2 cell cultures by pulsed laser microbeam irradiation. Images obtained at time delays of 0.5 ns to 50 µs demonstrate lysis to be mediated by laser-induced plasma formation resulting in pressure wave propagation and cavitation bubble formation. Image analysis enabled quantitative characterization of the pressure wave and cavitation bubble dynamics. The zone of cell damage exceeded the plasma size and serves to implicate cavitation bubble expansion as the primary age...

Research concerning cellular responses to low dose irradiation, radiation-induced bystander effects, and the biological track structure of charged particles has recently received particular attention in the field of radiation biology. Target irradiation employing a microbeam represents a useful means of advancing this research by obviating some of the disadvantages associated with the conventional irradiation strategies. The heavy-ion microbeam system at JAEA-Takasaki, which was planned in 1987 and started in the early 1990's, can provide targe...

To analyze the effects of the microbeam width (25, 50 and 75 microm) on the survival of 9L gliosarcoma tumor-bearing rats and on toxicity in normal tissues in normal rats after microbeam radiation therapy (MRT), 9L gliosarcomas implanted in rat brains, as well as in normal rat brains, were irradiated in the MRT mode. Three configurations (MRT25, MRT50, MRT75), each using two orthogonally intersecting arrays of either 25, 50 or 75 microm wide microbeams, all spaced 211 microm on center, were tested. For each configuration, peak entrance doses of...