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Full-Text Articles in Life Sciences

In Vivo Mature Immunological Synapses Forming Smacs Mediate Clearance Of Virally Infected Astrocytes From The Brain, Carlos Barcia, Clare Thomas, James Curtin, Gwendalyn King, Kolja Wawrowsky, Marianela Candolfi, Weidong Xiong, Chunyan Liu, Kurt Kroeger, Olivier Boyer, Jerzy Kupiec-Weglinski, David Klatzmann, Maria Castro, Pedro Lowenstein Sep 2006

In Vivo Mature Immunological Synapses Forming Smacs Mediate Clearance Of Virally Infected Astrocytes From The Brain, Carlos Barcia, Clare Thomas, James Curtin, Gwendalyn King, Kolja Wawrowsky, Marianela Candolfi, Weidong Xiong, Chunyan Liu, Kurt Kroeger, Olivier Boyer, Jerzy Kupiec-Weglinski, David Klatzmann, Maria Castro, Pedro Lowenstein

Articles

The microanatomy of immune clearance of infected brain cells remains poorly understood. Immunological synapses are essential anatomical structures that channel information exchanges between T cell–antigen-presenting cells (APC) during the priming and effector phases of T cells' function, and during natural killer–target cell interactions. The hallmark of immunological synapses established by T cells is the formation of the supramolecular activation clusters (SMACs), in which adhesion molecules such as leukocyte function-associated antigen 1 segregate to the peripheral domain of the immunological synapse (p-SMAC), which surrounds the T cell receptor–rich or central SMAC (c-SMAC). The inability so far to detect SMAC formation in …


Potential Of Vibrational Spectroscopy In The Diagnosis Of Human Tumours., Eoghan O'Faolain Jan 2006

Potential Of Vibrational Spectroscopy In The Diagnosis Of Human Tumours., Eoghan O'Faolain

Doctoral

Just fewer than 20,000 people are annually diagnosed with some form of cancer in Ireland and one in three people are likely to contract some form of cancer by age 74. With the number of cases increasing at an annual rate of 2%, the early detection and treatment of cancer is becoming increasingly important. Both IR and Raman spectroscopy offer the potential for real time, quantitative detection of cancer and even precancer. This study investigates the potential of Raman and Fourier transform infrared, both benchtop and synchrotron spectroscopies for the detection of cervical cancer. The tissue was classified and its …


Novel Gene Therapeutic Approaches To Brain Cancer, Maria Castro, James Curtin, Gwendalyn King, Marianela Candolfi, Peter Czer, Sandra Sciascia, Kurt Kroeger, Tamer Fakhouri, Sarah Honig, William Kuoy, Terry Kang, Stephen Johnson, Pedro Lowenstein Jan 2006

Novel Gene Therapeutic Approaches To Brain Cancer, Maria Castro, James Curtin, Gwendalyn King, Marianela Candolfi, Peter Czer, Sandra Sciascia, Kurt Kroeger, Tamer Fakhouri, Sarah Honig, William Kuoy, Terry Kang, Stephen Johnson, Pedro Lowenstein

Books/Book chapters

In the United States, approximately 17,000 people per year are diagnosed with brain tumors, the leading cause of death from cancers in children ages 1-15 year (1,2). Gliomas are the most prevalent type of brain tumors in adults, affecting 3.2/100,000 persons/yr in the United States (www.CBTRUS.org). In spite of advances in surgery, chemotherapy, and radiotherapy, the mean survival time of patients post-diagnosis remains approximately 9-12 months.


Analysis Of The Mouse And Human Acyl-Coa Thioesterase (Acot) Gene Clusters Shows That Convergent, Functional Evolution Results In A Reduced Number Of Human Peroxisomal Acots., Mary Hunt, Anna Rautanen, Maria Westin, Thomas Svensson, Stefan Alexson Jan 2006

Analysis Of The Mouse And Human Acyl-Coa Thioesterase (Acot) Gene Clusters Shows That Convergent, Functional Evolution Results In A Reduced Number Of Human Peroxisomal Acots., Mary Hunt, Anna Rautanen, Maria Westin, Thomas Svensson, Stefan Alexson

Articles

The maintenance of cellular levels of free fatty acids and acyl-CoAs, the activated form of free fatty acids, is extremely important as imbalances in lipid metabolism have serious consequences for human health. Acyl-CoA thioesterases (ACOTs) hydrolyze acyl-CoAs to the free fatty acid and CoASH, and thereby have the potential to regulate intracellular levels of these compounds. We have previously identified and characterized a mouse ACOT gene cluster, comprised of six genes that apparently arose by gene duplications, encoding acyl- CoA thioesterases with localizations in cytosol (ACOT1), mitochondria (ACOT2) and peroxisomes (ACOT3-6). However, the corresponding human gene cluster contains only three …


Rapid Cellular Signalling And Dose Dependent Cellular Pathways Induced In Hpv-G Cells Exposed To Medium Borne Factors, Paula Maguire Jan 2006

Rapid Cellular Signalling And Dose Dependent Cellular Pathways Induced In Hpv-G Cells Exposed To Medium Borne Factors, Paula Maguire

Doctoral

The aim of this thesis was to investigate rapid signalling events and dose dependent activation of cellular pathways in unirradiated human keratinocyte (HPV-G) cells exposed to bystander signal molecules in vivo and in vitro. HPV-G cells were exposed to irradiated cell conditioned medium (ICCM) ranging from 5mGy to 5Gy ICCM. Cellular events investigated included intercellular calcium, reactive oxygen species (ROS), mitochondrial membrane potential, cytochrome c release, caspase 3 and 8 activity, Bcl-2 expression and mitochondrial proliferation. Apoptosis levels and clonogenic survival were also determined in order to understand the cellular outcome of the activated pathways. It was found that exposure …