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in creator/contributor: "Lacko, Andras G."  
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Sensitive Microtiter Assays for NAD, NADP and Protein Quantification in Human Lymphocytes

Description: Intracellular levels of NAD are of renewed interest in clinical and basic science research due to the new discovery of enzymes which utilize NAD as a substrate. Microtiter assays for the determination of NAD, NADP and protein were developed as modifications of previously published methods. The resulting assays are simple, cost effective and sensitive. An improved method of isolating lymphocytes was also developed. The resultant procedure requires one hour and removes greater than 99.9% of the p… more
Date: May 1990
Creator: Johnson, James, 1964-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Studies of the Interaction of LCAT with Lipoprotein Substrates in HDL Deficient Plasma Systems

Description: Enzymatic and lipid transfer reactions involved in reverse cholesterol transport were studied in HDL deficient plasma systems. Fasting plasma samples were obtained from control and cholesterol fed guinea pigs as well as from a fish eye disease patient and were used to localize the enzyme LCAT among plasma lipoproteins (VLDL, LDL, and HDL). In both guinea pig and fish eye disease patient plasma, the LCAT activity was found in association with the HDL type particles. Cholesterol feeding in guinea… more
Date: August 1989
Creator: Paranjape, Sulabha
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Studies on ADP-Ribose Polymer Metabolism in Cultured Mammalian Cells Following DNA Damage

Description: ADP-ribose polymer metabolism has been studied in human cells derived from a patient with Glutamyl Ribose Phosphate Storage Disease (GRPSD) and in mouse C3H1OT1/2 cells following oxidative stress induced by hydrogen peroxide (H202 ). It has been postulated that GRPSD resulted from an abnormality in ADP-ribose polymer metabolism. This study has shown that these cells exhibit reduced poly(ADP ribose) polymerase activity which is proposed to result from modification of the enzyme with ribose phosp… more
Date: May 1991
Creator: Maharaj, Geeta
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Forensic Marker for a Genetic Disease Often Misdiagnosed as Sudden Infant Death Syndrome (SIDS)

Description: Sudden Infant Death (SIDS) has been associated with medium-chain acyl-CoA dehydrogenase (MCAD) deficiency, an inborn error of fatty acid oxidation. Blood and tissue samples from a large cohort of SIDS victims were analyzed for the presence of dodecanoic acid (C₁₂) by gas chromatography. A subgroup of these cases had a significantly higher blood concentration than age-matched controls, suggesting MCAD deficiency. An animal study using Sprague-Dawley rats was done to mimic the effects of MCAD def… more
Date: December 1991
Creator: Kemp, Philip M. (Philip Marcus)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Studies on Poly (ADP-ribose) Synthesis in Lymphocytes of Systemic Lupus Erythematosus Patients

Description: A method for assaying poly (ADP-ribose) polymerase (PADPRP) activity in lymphocytes of systemic lupus erythematosus (SLE) patients has been developed. Using this method, PADPRP activity has been studied in lymphocytes from 15 patients and 13 controls. The mean activity in SLE lymphocytes was significantly lower than that in controls and 60% of the SLE patients demonstrated activities below the minimum of the control population. Possible mechanisms for this altered metabolism were investigated. … more
Date: December 1991
Creator: Chen, Hai-Ying
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Isolation and Partial Characterization of Lecithin Cholesterol Acyltransferase and High Density Lipoprotein from Hog Plasma

Description: Lecithin:cholesterol acyltransferase (LCAT) was purified 30,000-fold from hog plasma in a homogeneous state as indicated by polyacrylamide gel electrophoresis. The purified enzyme had an apparent molecular weight of 66,000 and was found to contain about 21.4 percent (w/w) carbohydrate. The properties of hog LCAT including amino acid composition were compared with human LCAT. High density lipoprotein (HDL) was isolated from the hog plasma by an immunoaffinity column chromatography. The isolated … more
Date: May 1984
Creator: Park, Yong Bok
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An Assay Method for Determining Extra-Cellular Lipases from Pseudomonas aeruginosa

Description: The applicability of an isotopically labelled assay system to determine the lipase production in Pseudomonas aeruginosa was evaluated. Supernatant from cultures of Pseudomonas aeruginosa grown in a medium containing olive oil was incubated with a substrate containing labelled trioleate. Fatty acids were isolated by means of a liquid-liquid partition system. Enzyme activity was determined by measuring the amounts of free fatty acid by liquid scintillation counting. Findings indicate that the iso… more
Date: May 1978
Creator: Christensen, John N.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Studies on Lipoprotein Specificity of Human Plasma Lecithin Cholesterol Acyltransferase

Description: Huian plasma high-density lipoprotein (HDL) were isolated by a procedure employing polyanion precipitation and column chromatography. Lipid and protein composition of the HDL isolated by this method was found to be similar to another HDL preparation isolated by ultracentrifugation. However, minor differences were noted, including a higher phospholipid and apoproteinE content and lower triglyceride content of the HDL isolated by column chromatography. Four subfraction of HDL were obtained follow… more
Date: May 1981
Creator: Jahani, Mehrnoosh
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Isolation and Characterization of Two Enzyme Proteins Catalyzing Oxido-Reduction at C-9 and C-15 of Prostaglandins from Swine Kidney

Description: Two swine kidney proteins (PI 4.8 and 5.8) both possessing 9-prostaglandin ketoreductase (9-PGKR) and 15-hydroxyprostaglandin dehydrogenase (15-PGDH) activities were purified to homogeneity. Purification increased specific activities in parallel. Molecular weight, subunit size, amino acid composition, coenzyme and substrate specificity and antigenicity of both proteins were similar. Gel filtration and SDS-polyacrylamide gel electrophoresis molecular weights of 29,500 and 29,000, respectively, s… more
Date: December 1980
Creator: Chang, David Guey-Bin
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Teratogenic Effects of Nocodazole and Acrylamide in Mus Musculus

Description: In two separate experiments, weight adjusted doses of nocodazole and acrylamide were injected intraperitoneally at various time intervals into twelve week old female mice. Within the nocodazole experiment, the doses were injected at varying time intervals before and after mating. On day seventeen of gestation, the female mice were sacrificed and their uterine contents examined. Nocodazole induced a significant increase in reproductive pathology per total implants when administered one hour aft… more
Date: May 1989
Creator: Oliva, Jean L. (Jean Louise)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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