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Articles 211 - 234 of 234
Full-Text Articles in Laboratory and Basic Science Research
Increased Geranylgeranylated K-Ras Contributes To Antineoplastic Effects Of Farnesyltransferase Inhibitors., Mandy A. Hall
Increased Geranylgeranylated K-Ras Contributes To Antineoplastic Effects Of Farnesyltransferase Inhibitors., Mandy A. Hall
Dissertations and Theses (Open Access)
The Ras family of small GTPases (N-, H-, and K-Ras) is a group of important signaling mediators. Ras is frequently activated in some cancers, while others maintain low level activity to achieve optimal cell growth. In cells with endogenously low levels of active Ras, increasing Ras signaling through the ERK and p38 MAPK pathways can cause growth arrest or cell death. Ras requires prenylation – the addition of a 15-carbon (farnesyl) or 20-carbon (geranylgeranyl) group – to keep the protein anchored into membranes for effective signaling. N- and K-Ras can be alternatively geranylgeranylated (GG’d) if farnesylation is inhibited but are …
An Exhibit Wordle, Allison Marsh
A Crossword Puzzle For Kids, Allison Marsh
Word Find, Allison Marsh
Images From The Exhibit, Page 1, Allison Marsh
Lesson Plans, Activities, And Further Reading, Allison Marsh
Lesson Plans, Activities, And Further Reading, Allison Marsh
Handouts
No abstract provided.
Why Do We Collect?, Allison Marsh
Why Do We Collect?, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Spotlight On Usc: A.C. Moore Herbarium, Allison Marsh
Spotlight On Usc: A.C. Moore Herbarium, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Imaging And Aesthetics, Allison Marsh
Imaging And Aesthetics, Allison Marsh
Section 2: Imaging the Microscopic
No abstract provided.
Images From The Exhibit, Page 2, Allison Marsh
Characterization Of A Novel Gef Kiaa1362, Emily Roach
Characterization Of A Novel Gef Kiaa1362, Emily Roach
Honors Capstones
Capstone submitted as a graduation requirement for the BSU Honors Program.
Forward Osmosis Bag: Ground Testing The Prospect Of Using Alternative Water Sources For Drinking Water, Michaela Marie Brant, Ariella Yendler, Mona Hammoudeh, Michael T. Flynn
Forward Osmosis Bag: Ground Testing The Prospect Of Using Alternative Water Sources For Drinking Water, Michaela Marie Brant, Ariella Yendler, Mona Hammoudeh, Michael T. Flynn
STAR Program Research Presentations
On the STS-135 Space Shuttle mission, to be launched July 8, 2011, a forward osmosis bag (FOB) study will be conducted. At NASA Ames this summer, the ground truth testing is being conducted for results comparisons. The FOB technology is derived from a commercial product, the X-Pack water filter. Forward osmosis operates by utilizing an established concentration gradient across a semi-permeable membrane to move water molecules from one side of the membrane to the other. This concept is exploited to harvest drinking water from grey water sources such as urine, sea water, or vehicle water. In this experiment, potassium chloride …
The Role Of The Androgen Receptor Cofactor P44/Wdr77 In Astrocyte Activation, Bryce H. Vincent
The Role Of The Androgen Receptor Cofactor P44/Wdr77 In Astrocyte Activation, Bryce H. Vincent
Dissertations and Theses (Open Access)
Astrogliosis is induced by neuronal damage and is also a pathological feature of the major aging-related neurodegenerative disorders. The mechanisms that control the cascade of astrogliosis have not been well established. In a previous study, we identified a novel androgen receptor (AR)-interacting protein (p44/WDR77) and found that it plays a critical role in the control of proliferation and differentiation of prostate epithelial cells. In the present study, we found that deletion of the p44 gene in the mouse brain caused accelerated aging with dramatic astrogliosis. The p44/WDR77 is expressed in astrocytes and loss of p44/WDR77 expression in astrocytes leads to …
Role Of Vascular Endothelial Growth Factor, Placental Growth Factor And Cytokines On Outer Blood Retinal Barrier Breakdown., Sangeetha Sukumaran
Role Of Vascular Endothelial Growth Factor, Placental Growth Factor And Cytokines On Outer Blood Retinal Barrier Breakdown., Sangeetha Sukumaran
Masters
The aim of this thesis was to investigate the effect of the VEGF family of growth factors and
cytokines TNF- α and IL-1β on oBRB function. The human RPE line ARPE-19 was
employed as an in vitro model of the oBRB. Two-Dimensional gel electrophoresis was
employed to study the effect of growth factors on the RPE proteome. The barrier properties of
the oBRB were evaluated by expression of the TJ proteins occludin or Zo-1, or claudins-1, 2,
3 and 4, determined by western blotting analysis. Claudins 2, 3 and 4 were found to be
significantly up-regulated by TNF-α, while interleukin …
Dynamic Remodeling Of The Stressed Heart: Role Of Protein Degradation Pathways, Deborah Vela
Dynamic Remodeling Of The Stressed Heart: Role Of Protein Degradation Pathways, Deborah Vela
Dissertations and Theses (Open Access)
The heart is a remarkable organ. In order to maintain its function, it remodels in response to a variety of environmental stresses, including pressure overload, volume overload, mechanical or pharmacological unloading and hormonal or metabolic disturbances. All these responses are linked to the inherent capacity of the heart to rebuild itself. Particularly, cardiac pressure overload activates signaling pathways of both protein synthesis and degradation. While much is known about regulators of protein synthesis, little is known about regulators of protein degradation in hypertrophy. The ubiquitin-proteasome system (UPS) selectively degrades unused and abnormal intracellular proteins. I speculated that the UPS may …
New Target Genes For Tumor Suppressors P53 And P73 In Regenerating Liver, Svitlana M. Kurinna
New Target Genes For Tumor Suppressors P53 And P73 In Regenerating Liver, Svitlana M. Kurinna
Dissertations and Theses (Open Access)
The p53-family of proteins regulates expression of target genes during tissue development and differentiation. Within the p53-family, p53 and p73 have hepatic-specific functions in development and tumor suppression. Despite a growing list of p53/p73 target genes, very few of these have been studied in vivo, and the knowledge regarding functions of p53 and p73 in normal tissues remains limited. p53+/-p73+/- mice develop hepatocellular carcinoma (HCC), whereas overexpression of p53 in human HCC leads to tumor regression. However, the mechanism of p53/p73 function in liver remains poorly characterized. Here, the model of mouse liver regeneration is used to identify new target …
Sexually Dimorphic Effects Of Prenatal Stress On Cognition, Hormonal Responses, And Central Neurotransmitters, Rachel E. Bowman, Neil J. Maclusky, Yessenia Sarmiento, Maya Frankfurt, Marisa Gordon, Victoria N. Luine
Sexually Dimorphic Effects Of Prenatal Stress On Cognition, Hormonal Responses, And Central Neurotransmitters, Rachel E. Bowman, Neil J. Maclusky, Yessenia Sarmiento, Maya Frankfurt, Marisa Gordon, Victoria N. Luine
Psychology Faculty Publications
Exposure to stress during gestation results in physiological and behavioral alterations that persist into adulthood. This study examined the effects of prenatal stress on the postnatal expression of sexually differentiated cognitive, hormonal, and neurochemical profiles in male and female rats. Pregnant dams were subjected to restraint stress three times daily for 45 min during d 14-21 of pregnancy. The offspring of control and prenatally stressed dams were tested for anxiety-related and cognitive behaviors, stress and gonadal steroid hormone levels, as well as monoamines and metabolite levels in selected brain regions. Postnatal testosterone levels (measured at 1 and 5 d) did …
Construction Of Rhas And Rhar Overexpression Plasmids And The Effects Of Crp Mutants On E.Coli L-Rhamnose Gene Expression, Amber Bromenshenkel, Susan Egan
Construction Of Rhas And Rhar Overexpression Plasmids And The Effects Of Crp Mutants On E.Coli L-Rhamnose Gene Expression, Amber Bromenshenkel, Susan Egan
Honors Capstones
Capstone submitted as a graduation requirement for the BSU Honors Program.
Effects Of Liposome-Encapsulated Tnf-Alpha And Radiation Against Colon Cancer, Dong Won Kim
Effects Of Liposome-Encapsulated Tnf-Alpha And Radiation Against Colon Cancer, Dong Won Kim
Loma Linda University Electronic Theses, Dissertations & Projects
Previous studies have shown that tumor necrosis factor-α (TNF-α) can augment the antitumor effects of radiation, inhibiting tumor progression to a greater extent than either modality alone. However, nonspecific toxicities associated with TNF-α have limited its use as an adjuvant. This limitation is potentially resolved with the encapsulation of TNF-α in sterically stabilized, PEGylated liposomes (STEALTH®). Thus, the overall hypothesis of the research was that the combination of radiation with STEALTH® liposome encapsulated TNF-α (SL-TNF-α) will have greater efficacy and fewer dose-limiting side effects in the LS174T human colorectal tumor xenograft model compared to the combination of free TNF-α and …
Altered Trafficking Of Mutant Connexin32, Suzanne M. Deschênes, Jessica L. Walcott, Tamara L. Wexler, Steven S. Scherer, Kenneth H. Fischbeck
Altered Trafficking Of Mutant Connexin32, Suzanne M. Deschênes, Jessica L. Walcott, Tamara L. Wexler, Steven S. Scherer, Kenneth H. Fischbeck
Biology Faculty Publications
We examined the cellular localization of nine different connexin32 (Cx32) mutants associated with X-linked Charcot–Marie–Tooth disease (CMTX) in communication-incompetent mammalian cells. Cx32 mRNA was made, but little or no protein was detected in one class of mutants. In another class of mutants, Cx32 protein was detectable in the cytoplasm and at the cell surface, where it appeared as plaques and punctate staining. Cx32 immunoreactivity in a third class of mutants was restricted to the cytoplasm, where it often colocalized with the Golgi apparatus. Our studies suggest that CMTX mutations have a predominant effect on the trafficking of Cx32 protein, resulting …
Inhibition Of Axonal Growth By Brefeldin A In Hippocampal Neurons In Culture, Mark Jareb, Gary Banker
Inhibition Of Axonal Growth By Brefeldin A In Hippocampal Neurons In Culture, Mark Jareb, Gary Banker
Biology Faculty Publications
The outgrowth of neuronal processes involves a great increase in the surface area of the cell. The supply of membrane material necessarily must be coordinated with the demands for neurite growth. The selective growth of only one or two neurites at any given time during the development of polarity raises the possibility that the production of materials by the soma is limiting for growth (Dotti and Banker, 1987; Dotti et al., 1988; Goslin and Banker, 1990). To examine the role of the availability of membrane components during the development of polarity and axonal elongation, we treated neurons with brefeldin A, …
Connexin32 Is A Myelin-Related Protein In The Pns And Cns, Steven S. Scherer, Suzanne M. Deschênes, Yi-Tian Xu, Judith B. Grinspan, Kenneth H. Fischbeck, David L. Paul
Connexin32 Is A Myelin-Related Protein In The Pns And Cns, Steven S. Scherer, Suzanne M. Deschênes, Yi-Tian Xu, Judith B. Grinspan, Kenneth H. Fischbeck, David L. Paul
Biology Faculty Publications
We have examined the expression of a gap junction protein, connexin32 (Cx32), in Schwann cells and oligodendrocytes. In peripheral nerve, Cx32 is found in the paranodal myelin loops and Schmidt-Lanterman incisures of myelinating Schwann cells, and the levels of Cx32 protein and mRNA change in parallel with those of other myelin-related genes during development, Wallerian degeneration, and axonal regeneration. In the central nervous system, Cx32 is found in oligodendrocytes and their processes, but not in compact myelin, and the levels of Cx32 protein and mRNA increase during development in parallel with those of the other myelin genes. Thus, Cx32 is …
Increased Stem Cell Factor Release By Hemangioma-Derived Endothelial Cells, C. J. Meininger, Shannon Brightman, K. A. Kelly, B. R. Zetter
Increased Stem Cell Factor Release By Hemangioma-Derived Endothelial Cells, C. J. Meininger, Shannon Brightman, K. A. Kelly, B. R. Zetter
Biology Faculty Publications
Background: Capillary hemangiomas, the most common tumors in young children, consist of proliferating capillary vessels and endothelial cells. These tumors also contain large numbers of mast cells, compared with the normal surrounding skin or tissue. We have recently shown that stem cell factor (SCF), the gene product of the murine steel locus, can act as a chemoattractant for mast cells. In this study, we investigated whether SCF might be involved in the recruitment and maintenance of mast cells in hemangiomas. Experimental Design: Cultured endothelial cells derived from a murine hemangioma were compared with normal vascular endothelial cells for the ability …
Effect Of Photoperiod On Developmental Morphology And Enolase Isoenzyme Immunohistochemistry In Rat And Djungarian Hamster Superficial Pineal Glands, Chalmer D. Mcclure
Effect Of Photoperiod On Developmental Morphology And Enolase Isoenzyme Immunohistochemistry In Rat And Djungarian Hamster Superficial Pineal Glands, Chalmer D. Mcclure
Loma Linda University Electronic Theses, Dissertations & Projects
The best understood functional activity of the pineal gland is its diurnal production of melatonin in response to environmental lighting cues. Several enzymes of the melatonin pathway respond to daily photoperiod changes, for example hydroxyindole-O-methyltransferase (HIOMT) and serotonin N-acetyltransferase (SNAT). Increased levels of the glycolytic enzyme neuron-specific enolase (NSE) are thought to reflect increased physiological demands placed on neurons and neuroendocrine tissues. Homodimer non-neuronal enolase isoenzyme (NNE) is immunolocalized to cells, and the hybrid enolase (consisting of subunits from NSE and NNE) has been seen in cerebellar stellate and basket cells. Although not rate limiting, concentrations of both NSE and …