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Articles 241 - 253 of 253
Full-Text Articles in Medicine and Health Sciences
A New Immunoassay For Quantification Of A Novel Cancer Antigen In Serum And Immunostaining Of Carcinoma Tissues And Cultured Cells Revealing The Antigenic Cellular Location., Emily Christine Mcduffee
A New Immunoassay For Quantification Of A Novel Cancer Antigen In Serum And Immunostaining Of Carcinoma Tissues And Cultured Cells Revealing The Antigenic Cellular Location., Emily Christine Mcduffee
Electronic Theses and Dissertations
The purpose of this study is 1) to examine the presence of the antigen in serum by employing a newly developed ELISA immunoassay that quantifies the total antigen and bound antigen (antigen-antibody complex) using polyclonal chicken antibodies directed against an IgM-binding epitope of the new antigen, and 2) to determine the location of the antigen in carcinoma and normal cells. Sera from healthy volunteers (n = 147) and cancer patients (n = 26) were compared for both bound and total antigen concentrations using the new ELISA. Healthy volunteers were subdivided into three groups: those with a personal history of cancer …
Hiv Tat Protein Activates Endothelial Cells Through Nfκb And Map Kinase Pathways., Jason L. Henry
Hiv Tat Protein Activates Endothelial Cells Through Nfκb And Map Kinase Pathways., Jason L. Henry
Electronic Theses and Dissertations
HIV infection has been shown to predispose patients to accelerated development of heart disease. One mechanism for this pathology may involve endothelial activation either by HIV itself or by its secreted proteins, gp120 (a viral envelope protein) and tat (a protein that upregulates transcription of viral genes). We have studied the effects of gp120 and tat on signaling and production of inflammatory cytokines by Human Pulmonary Artery Endothelial Cells (HPAEC). HPAEC were stimulated at varying time points with combinations of gp120, tat, and monokines (IL-1β and TNFα). Cell lysate fractions were analyzed for MAP Kinase activity and NFκB activation, and …
The Signaling Pathway Of Oxysterol Induced Apoptosis In Chinese Hamster Ovary (Cho)-K1 Cells., Lin Yang
The Signaling Pathway Of Oxysterol Induced Apoptosis In Chinese Hamster Ovary (Cho)-K1 Cells., Lin Yang
Electronic Theses and Dissertations
Apoptosis, a form of genetically programmed cell death, plays a key role in regulation of cellularity of the arterial wall. During atherogenesis, improper apoptosis may cause abnormalities of arterial morphogenesis, wall structural stability, and metabolisms. It has been well established that vascular cells undergo apoptosis after uptake of oxidized low-density lipoprotein (oxLDL). Thus, an analysis of the signaling pathway of apoptotic induction by oxLDL is of value in understanding the development of atherosclerotic plaque. In order to elucidate the signaling pathway of apoptosis induced by oxLDL, we have used Chinese hamster ovary (CHO)-K1 cells treated with a potent oxysterol, 25-hydroxycholesterol …
30s Ribosomal Subunit Assembly Is A Target For Inhibition By Aminoglycoside Antibiotics In Escherichia Coli., Roopal Manoj Mehta
30s Ribosomal Subunit Assembly Is A Target For Inhibition By Aminoglycoside Antibiotics In Escherichia Coli., Roopal Manoj Mehta
Electronic Theses and Dissertations
Antibacterial agents specific for the 50S ribosomal subunit not only inhibit translation but also prevent assembly of that subunit. I examined the 30S ribosomal subunit in growing Escherichia coli cells to see if antibiotics specific for that subunit also had a second inhibitory effect. I used the aminoglycoside antibiotics paromomycin and neomycin, which bind specifically to the 30S ribosomal subunit. Both antibiotics inhibited the growth rate, viable cell number, and protein synthesis. I used a 3H-uridine pulse and chase assay to examine the kinetics of ribosome subunit assembly in the presence and absence of each antibiotic. Analysis revealed a …
Molecular Studies Involving The Rev Protein Of Caprine Arthritis Encephalitis Virus And Visna Virus., Bridget Michele Graves
Molecular Studies Involving The Rev Protein Of Caprine Arthritis Encephalitis Virus And Visna Virus., Bridget Michele Graves
Electronic Theses and Dissertations
Caprine Arthirtis Encephalitis Virus (CAEV) and Visna Virus are two viruses of the lentivirus family. They encode three structural genes (gag, pol, and env) and two regulatory genes (rev and tat). The Rev protein regulates Gag, Pol and Env expression by transporting their mRNAs to the cytoplasm by binding to the RRE (Rev Response Element) found on their mRNAs. Previous studies have indicated that Rev may be toxic to transfected cells, overexpression of exogenous RREs or a better binding RRE can inhibit Rev activity and Rev-C (CAEV Rev) can trans-activate RRE-V (Visna Virus …
Behavioral Changes In Adult C57bl/6j Mice Following Prenatal Exposure To Ethanol., Kevin Wade Nunley
Behavioral Changes In Adult C57bl/6j Mice Following Prenatal Exposure To Ethanol., Kevin Wade Nunley
Electronic Theses and Dissertations
Fetal Alcohol Syndrome (FAS) labels children with physical, mental and behavioral deficits exposed to alcohol in utero. Current research indicates that timing of alcohol exposure of the embryo/fetus is a critical determinant of the behavioral deficits associated with FAS. This study represents a model for binge drinking, in which C57BL mouse embryos were exposed to alcohol during 2 separate critical periods of brain development, gestational day (GD) 7 or 8. As adults, the offspring were tested to determine if loco-motor activity and emotional reaction to a novel environment had been affected. Significant differences due to treatment and sex were …
Characterization Of Seca-Sod Operon In Borrellia Burgdorferi., Tonya Lynn Nichols
Characterization Of Seca-Sod Operon In Borrellia Burgdorferi., Tonya Lynn Nichols
Electronic Theses and Dissertations
Borrelia burgdorferi, the causative agent of Lyme disease, has been characterized as a microaerophilic spirochete. O2 consumption and utilization potentially yield reactive oxygen intermediates, such as superoxide, hydroxyl radicals, and hydrogen peroxide. This study investigated the expression of the sod gene, which encodes the only, identified oxidative defense mechanism in B. burgdorferi. Using primer extension analysis and RT-PCR, it was found that sod and secA are organized as a single transcriptional unit under the control of σ70-like promoter upstream of the secA open reading frame. Generally, gene expression decreases with increased distance from the promoter; however, secA expression was observed …
Characterization Of 50s Ribosomal Subunit Assembly Inhibition In Erythromycin Treated Escherichia Coli Cells., Jerry Edward Usary
Characterization Of 50s Ribosomal Subunit Assembly Inhibition In Erythromycin Treated Escherichia Coli Cells., Jerry Edward Usary
Electronic Theses and Dissertations
Erythromycin has long been recognized for its ability to inhibit protein synthesis by interfering with mRNA translation on the bacterial ribosome. We have recently shown that erythromycin also inhibits the assembly of the 50S ribosomal subunit in growing bacterial cells. The nature of this assembly inhibition has been investigated using 3H-uridine pulse-chase labeling of control and erythromycin treated E. coli cells.
Subunit assembly was examined by sucrose gradient centrifugation of labeled cell lysates. Normal assembly kinetics of subunit assembly were observed in control cells at 37°C. Formation of the 30S subunit was completed by 7.5 minutes and assembly of …
Present Practices In Testing Deaf Children., Mary Dillon Guilmartin 1893-1971
Present Practices In Testing Deaf Children., Mary Dillon Guilmartin 1893-1971
Electronic Theses and Dissertations
No abstract provided.
The Effect Of Experimental Liver Damage On The Blood Picture Of The Dog., H. D. Bruner
The Effect Of Experimental Liver Damage On The Blood Picture Of The Dog., H. D. Bruner
Electronic Theses and Dissertations
No abstract provided.
The Cause Of Vascular Sclerosis In Essential Hypertension And Related Phenomena, Claude W. Chappell
The Cause Of Vascular Sclerosis In Essential Hypertension And Related Phenomena, Claude W. Chappell
Electronic Theses and Dissertations
No abstract provided.
A Study Of The Diffusibility And Non-Diffusibility Of Magnesium And Calcium In Normal Blood Sera., Louis J. Halle
A Study Of The Diffusibility And Non-Diffusibility Of Magnesium And Calcium In Normal Blood Sera., Louis J. Halle
Electronic Theses and Dissertations
No abstract provided.
The Influence Of The Brain Upon The Liver As A Blood Concentrating Organ In Fever., Benjamin F. Aydelotte 1899-1956
The Influence Of The Brain Upon The Liver As A Blood Concentrating Organ In Fever., Benjamin F. Aydelotte 1899-1956
Electronic Theses and Dissertations
No abstract provided.