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Articles 3991 - 4020 of 4113
Full-Text Articles in Chemicals and Drugs
High Resolution Two Dimensional Electrophoresis Of Soluble Proteins In Human Spermatozoa, Hsing-Ying Liu
High Resolution Two Dimensional Electrophoresis Of Soluble Proteins In Human Spermatozoa, Hsing-Ying Liu
Chemistry & Biochemistry Theses & Dissertations
The evaluation of human semen is very important for diagnosis of male infertility. Combined with the analysis of seminal plasma, a comprehensive biochemical screening of human spermatozoan proteins may be of assistance in providing qualitative and quantitative information to the physician to assist with evaluation.
In this study, human spermatozoa were ruptured by sonication. The soluble spermatozoan proteins were separated from the cellular debris by centrifugation and then analyzed in dissociated forms by two dimensional electrophoresis. The separated proteins were visualized by a silver stain method.
It has been shown that these combined techniques can resolve- four to five hundred …
The Copper Status Of Vegetarian And Non-Vegetarian Men, Susan Bruce
The Copper Status Of Vegetarian And Non-Vegetarian Men, Susan Bruce
Loma Linda University Electronic Theses, Dissertations & Projects
In this study, the copper status of 18 vegetarian and 17 non-vegetarian men were compared. Copper status was assessed by determining red blood cell superoxide dismutase (RBC-SOD) activity and plasma copper. Plasma copper levels were measured by atomic absorption spectroscopy. Plasma cholesterol, triacyclglycerols, HDL cholesterol, LDL cholesterol VLDL cholesterol were also determined. Twenty-four hour recalls and three-day food records were obtained to determine copper, zinc, energy, protein, fat, fiber, saturated fat, oleic acid, linoleic acid and cholesterol intake. Non-vegetarians had a significantly higher plasma cholesterol and LDL cholesterol than vegetarians. They also had a significantly higher cholesterol, saturated fat, percent …
Conformational Analysis Of Nonsteroidal Estrogen Analogs, Robert N. Spady
Conformational Analysis Of Nonsteroidal Estrogen Analogs, Robert N. Spady
Loma Linda University Electronic Theses, Dissertations & Projects
In target tissue, estrogens initiate a series of events, ending in protein synthesis, by binding to a cytoplasmic receptor. Once the estrogen binds, the receptor complex is activated--a process including dimerization of the estrogen complex with another subunit. In order to study the possible receptor-ligand interactions, conformational analysis was performed on several nonsteroidal estrogen analogs, using the CAMSEQ8 molecular mechanics program.
The probability that a molecule will exist in a given conformational energy well depends both on the energy and the shape of the well. A method has been previously worked out to calculate probabilities using both of these variables, …
Development Of A Procedure For Analysis Of High Density Lipoprotein Subclasses, Chan Chin
Development Of A Procedure For Analysis Of High Density Lipoprotein Subclasses, Chan Chin
Chemistry & Biochemistry Theses & Dissertations
Human serum high density lipoprotein subclasses, HDL2 and HDL3 , were isolated by preparative salt density gradient ultracentrifugation and further analyzed by electrophoresis on a 4 to 15% concentration gradient polyacrylamide gel.
The separation of the major classes of serum lipoproteins was achieved after a single ultracentrifugation for 272,000 g at 15°c in a swinging bucket rotor. High resolution concentration gradient gel electrophoresis was found to be particularly suitable for the separation of lipoproteins. The isolation of HDL by precipitation methods, heparin-manganese and dextran-magnesium have also been evaluated in this study, and were found not to completely separate …
Meal Interference With Antibiotics Administered Orally In Kentucky Hospitals, Shirley Harper
Meal Interference With Antibiotics Administered Orally In Kentucky Hospitals, Shirley Harper
Masters Theses & Specialist Projects
Hospitals within the State of Kentucky were surveyed to determine if the size of the hospitals influence the frequency of potential meal interference with the administration of oral antibiotics where the "empty stomach" concept must be fulfilled. One hundred and ten hospitals responded to the mailed survey. Of the responding hospitals 103 were short-term and 7 were long-term hospitals. The frequency of conflict was greater for nourishments than with meal interference. Ninety-three and six tenths percent or 103 answered yes when asked if all patients received nourishments on request. The conflicts of potential meal interference ranged from 15 to 40 …
The Aquatic Toxicity Of Organic Compounds To Embryo-Larval Stages Of Fish And Amphibians, Jeffrey A. Black, Wesley J. Birge, Willaim E. Mcdonnell, Albert G. Westerman, Barbara A. Ramey, Donald M. Bruser
The Aquatic Toxicity Of Organic Compounds To Embryo-Larval Stages Of Fish And Amphibians, Jeffrey A. Black, Wesley J. Birge, Willaim E. Mcdonnell, Albert G. Westerman, Barbara A. Ramey, Donald M. Bruser
KWRRI Research Reports
Aquatic toxicity tests were conducted on 11 organic compounds considered hazardous to water resources. The toxicity of each compound was evaluated using embryo-larval stages of two to eight fish and amphibian species. Exposure was initiated at fertilization and maintained through 4 days posthatching. The animal test species exhibited varying degrees of sensitivity to the selected toxicants. Combined frequencies for mortality and teratogenesis at 4 days posthatching gave LC50 ranges of 3.66 to 8.25 mg/L for benzene, 1.16 to 22.42 mg/L for carbon tetrachloride, 0.11 to 1.20 mg/L for chlorobenzene, 2.03 to > 68 mg/L for chloroform, 3.01 to 5.56 mg/L …
Low Pressure Membrane Separation Process To Remove Heavy Metal Complexes, Dibakar Bhattacharyya, Chin-Shun Cheng
Low Pressure Membrane Separation Process To Remove Heavy Metal Complexes, Dibakar Bhattacharyya, Chin-Shun Cheng
KWRRI Research Reports
The overall objective of this investigation is to establish the rejection behavior of heavy metals in the presence of complexing agents, utilizing negatively charged ultrafiltration membranes. An extensive experimental investigation is conducted with Zn2+, Cd2+, Cu2+, and Cu1+ in the presence of cyanide, ethylenediamine tetraacetic acid, and oxalates, under insignificant concentration polarization condition. The rejection dependence of the heavy metals is found to be a function of feed metal concentration, metal types, complexing agent to metal feed molar ratio, pH and ionic strength. The dependence of rejection behavior of heavy metals and complexing …
The Effect Of Hypercholesterolemia On The Membrane Lipids, 3-0-[¹⁴C] Methylglucose Transport, And 2,3-Diphosphoglycerate Levels In Rat Erythrocytes, Edwin J. Lester Jr.
The Effect Of Hypercholesterolemia On The Membrane Lipids, 3-0-[¹⁴C] Methylglucose Transport, And 2,3-Diphosphoglycerate Levels In Rat Erythrocytes, Edwin J. Lester Jr.
Loma Linda University Electronic Theses, Dissertations & Projects
An increase in dietary cholesterol and cholic acid will produce hypercholesterolemia in rats. For ten months, two groups of rats (six in each group) were fed commercial rat pellets (control group) or rat pellets plus cholesterol (1%) and cholic acid (0.25%) (experimental group). A blood sample from each animal was divided into three aliquots for three separate experiments on the erythrocytes: a membrane cholesterol and phospholipid determination, a 3-0-[14C] methylglucose (30MG) transport determination, and a 2,3-diphosphoglycerate (2,3 DPG) determination. The 30MG transport and 2,3 DPG aliquots were each incubated in the same five concentrations of 30MG and glucose …
Muscle Catabolism During A Protein Sparing Modified Fast As Measured By Urinary 3-Methylhistidine, Judith D. Nielsen
Muscle Catabolism During A Protein Sparing Modified Fast As Measured By Urinary 3-Methylhistidine, Judith D. Nielsen
Loma Linda University Electronic Theses, Dissertations & Projects
The urinary excretion of 3-Methylhistidine was used as an index of muscle catabolism in four groups of obese persons receiving a Protein Sparing Modified Fast (PSMF). The composition of the supplements were as follows: Group I: 75 g protein, 25 g complex carbohydrate (starch) per day; Group II: 25 g protein, 75 g complex carbohydrate (starch) per day; Group III: 75 g protein, 25 g simple carbohydrate (glucose) per day; Group IV: 25 g protein, 75 g simple carbohydrate (glucose) per day. The PSMF lasted for seven days and a 24-hour urine sample was collected at the beginning of the …
In Vitro Enzymatic Assay Of Rna Methylation, Pamela Jean Eubanks Gallup
In Vitro Enzymatic Assay Of Rna Methylation, Pamela Jean Eubanks Gallup
Chemistry & Biochemistry Theses & Dissertations
An assay procedure for in vitro enzymatic methylation of mannnalian ribosomal RNA has been developed in this study. The assay procedure, utilized for the comparison of normal and neoplastic methylase activities (using mouse liver and Ehrlich ascites cells as sources of enzyme), is a modification of previously published methods (52,53). A 100,000 x g supernatant (SlOO) enzyme preparation was incubated with 28S-5.8S rRNA and tritium-labeled S-adenosyl-L-methionine. The RNA was extracted, applied to DEAE cellulose paper, washed, and the radioactivity counted. The neoplastic cell methylase preparation was more active in methylating both exogenous neoplastic and normal 28S-5.8S rRNA than the normal …
Studies Toward The Total Synthesis Of Antibiotic 593a, Robert B. Wardle
Studies Toward The Total Synthesis Of Antibiotic 593a, Robert B. Wardle
Undergraduate Honors Capstone Projects
In 1970 art article was published in the Journal of Antibiotics in which the isolation of a substance from the south African soil microorganism Streptomyces griseolutus designated 593A (NSC-135758) was reported. It was reported to inhibit the growth of human tumors in the chick embryo. Arison and Beck in 1973 proposed the structure to be 3,6-bis-(5-chloro-2 -piperidyl-)-2 ,5-piperizinedione based on spectral data.
In the ensuing years a number of further studies were made on the activity of 593A, It was found to be active against a number of solid tumors, several variants of leukemia, and in selectively inhibiting DNA synthesis. …
The Synthesis And Biochemical Evaluation Of Potential Acetylcholinesterase Reactivators, Andrea Mcdearmid Lunsford
The Synthesis And Biochemical Evaluation Of Potential Acetylcholinesterase Reactivators, Andrea Mcdearmid Lunsford
Chemistry & Biochemistry Theses & Dissertations
Objectives of this research were to (1) synthesize, and (2) evaluate new compounds which would be potential reactivators of organophosphate-inhibited acetylcholinesterase.
A series of 1,8-diazafluorenone and 2,2'bipyridylketone oximes and oxime methiodides were synthesized (11, 13, 14, 22, 24). These compounds were developed as structural analogs of 2-PAM (2-Pyridinealdoxime methiodide) and TMB-4 (1,1Trimethylene-Bis(4-formylpyridinium bromide)dioxime), the current drugs of choice for treatment of organophosphorous poisoning.
Acetylcholinesterase from electric eel was inhibited with DFP (diisopropylfluorophosphate), an irreversible-type inhibitor, and the inhibited enzyme was treated with the various reactivator compounds. The reactivation assays were monitored with pH stat apparatus, and the data were evaluated …
High Resolution Two-Dimensional Electrophoretic Study Of Human Seminal Plasma Proteins, Edward E. Gaunt
High Resolution Two-Dimensional Electrophoretic Study Of Human Seminal Plasma Proteins, Edward E. Gaunt
Chemistry & Biochemistry Theses & Dissertations
A comprehensive biochemical screening procedure for the evaluation of seminal plasma constituents is needed which, when used in conjunction with semen analysis, can provide the physician with both qualitative and quantitative information regarding the fertility status of an individual.
High resolution two-dimensional electrophoresis is a technique whereby proteins in a complex mixture such as a biological fluid are separated in one dimension by molecular charge and in the second dimension by molecular mass. It has been the purpose of this investigation to adapt and evaluate this technique for the analysis of human seminal plasma.
Our efforts have shown that this …
Multiple Forms Of Nicotinamide Adenine Dinucleotide Glycohydrolase From Bull Semen, Stanley D. Yeatts Ii
Multiple Forms Of Nicotinamide Adenine Dinucleotide Glycohydrolase From Bull Semen, Stanley D. Yeatts Ii
Chemistry & Biochemistry Theses & Dissertations
Nicotinamide adenine dinucleotide glycohydrolase (NADase) of bull semen is an extracellular, soluble enzyme capable of catalyzing the hydrolysis of the nicotinamide N-ribosidic linkage of NAD+. In search for a rapid, simple procedure for the preparation of this enzyme, it was found that Matrex Gel Red A (Amicon) column packing served very well as an affinity gel for NADase. The enzyme was applied to the Matrex Red A column (21 cm x 1.5 cm) in 10 mM sodium phosphate buffer, pH 6.0. Surprisingly, two fractions of NADase activity were obtained when the column was eluted with a sodium chloride …
Lipoprotein Lipase Inhibitor Removal During Ultrafiltration Of Renal Failure Patients, Alisa Minear
Lipoprotein Lipase Inhibitor Removal During Ultrafiltration Of Renal Failure Patients, Alisa Minear
Loma Linda University Electronic Theses, Dissertations & Projects
Plasma samples were obtained from seven hypertriglyceridemic (>150 mg/dl) chronic renal failure patients before and after regular hemodialysis. The effect of the plasma on the lipolytic activity of bovine milk lipoprotein lipase was investigated. The lipoprotein lipase activity, as measured by release of C14-labeled free fatty acid from triglyceride, was decreased 8-67% when incubated with uremic plasma as compared to the control plasma (44 mg/dl triglyceride). The inhibition noted prior to hemodialysis did not appear to be alleviated by the dialysis but subsequent treatment with an isolated ultrafiltration technique did appear to remove an inhibitory substance as …
An Avoidance Response Bioassay For Aquatic Pollutants, Jeffrey A. Black, Wesley J. Birge
An Avoidance Response Bioassay For Aquatic Pollutants, Jeffrey A. Black, Wesley J. Birge
KWRRI Research Reports
Avoidance response bioassays were conducted with eight aquatic contaminants, including cadmium, copper, mercury, zinc, chloroform, dioctyl phthalate (DOP), trisodium nitrilotriacetic acid (NTA), and phenol. Tests were performed in a dual-channel fluviarium system, and the toxicant injection procedure used provided good regulation of exposure concentrations. Juvenile stages of largemouth bass (Micropterus salmoides), bluegill sunfish (Lepomis macrochirus), and rainbow trout (Salmo gairdneri), and tadpoles of the American toad (Bufo americanus) proved to be suitable animals for evaluating avoidance or attraction responses. The trout was the most sensitive species tested.
Avoidance was significant in tests …
Sulfatides As Opiate Receptors: An Evaluation Of The Opiate Binding Potential Of Sulfogalactosylgylcerolipid, Darby Geoghegan Hand
Sulfatides As Opiate Receptors: An Evaluation Of The Opiate Binding Potential Of Sulfogalactosylgylcerolipid, Darby Geoghegan Hand
Chemistry & Biochemistry Theses & Dissertations
Cerebroside sulfate (CS) has recently been shown to bind opiate drugs in a pharmacologically relevent manner and therefore satisfy the structural requirements of an opiate receptor. Seminolipid (SGG), a novel sulfated galactosyl. glycerolipid that has been isolated from the testes of a variety of mammals, may be viewed as a structural analog of CS. In view of this structural similarity, it is reasonable to presume that SGG may also bind opiate drugs. The isolation of SGG from boar testes was accomplished using silica gel dry column chromotography with a chloroform: methanol water solvent system. The structure and purity of the …
Effects Of Organic Compounds On Amphibian Reproduction, Wesley J. Birge, Jeffrey A. Black, Robert A. Kuehne
Effects Of Organic Compounds On Amphibian Reproduction, Wesley J. Birge, Jeffrey A. Black, Robert A. Kuehne
KWRRI Research Reports
Aquatic toxicity tests were conducted with atrazine, carbon tetrachloride, chloroform, methylene chloride, trisodium nitrilotriacetic acid (NTA), and phenol. Each compound was administered to developmental stages of three to five amphibian species. Exposure was initiated at fertilization and maintained through 4 days posthatching. Test responses included lethality and teratogenesis. Different amphibian species exhibited varying degrees of tolerance to the selected compounds. Greatest tolerance usually was observed for the more broadly adapted semi-aquatic and terrestrial species (e.g., Bufo americanus, Bufo fowleri). The more sensitive amphibians usually included those species which normally are restricted to aquatic or moist habitats (e.g., Rana …
Valium: Its Uses And Abuses, Jeffrey A. Hardy
Valium: Its Uses And Abuses, Jeffrey A. Hardy
Undergraduate Honors Capstone Projects
Between the months of June 1978 and June 1979, I was employed at Sunshine Terrace, a nursing home in Logan, Utah. In the year I spent there working as an orderly on the wing for incontinent male patients, I was exposed to a lot of things of which I had previously been unaware.
One which I observed was the liberal use of medications. At each nuses' station there was a small room which contained about six cabinets full of prescription drugs for the forty or so patients on that wing. At least every four hours the medication nurse would prepare …
Characteristics Of The Recovery Of The Coenzyme A-Synthesizing Protein Complex From Saccharomyces Cerevisiae, Stanley Joseph Tarnowski Jr.
Characteristics Of The Recovery Of The Coenzyme A-Synthesizing Protein Complex From Saccharomyces Cerevisiae, Stanley Joseph Tarnowski Jr.
Theses and Dissertations (ETD)
A multienzyme complex contained in Bakers' yeast (Saccharomyces cerevisiae) which synthesizes CoA has been named the coenzyme A-synthesizing protein complex (CoA-SPC). The CoA-SPC has been shown to be insoluble in the crude Bakers' yeast cell lysate formed by exposing the yeast cell to ether and dry ice. Only after solubilization has this multienzyme complex been shown to catalyze the formation of bound dephospho-CoA utilizing the substrates adenosine triphosphate, D-pantothenic acid and L-cysteine. A low molecular weight component or components of the soluble fraction of the yeast cell and chloride ion appears to be responsible for the solubilization of CoA-SPC. This …
Consciousness, Neurons, And Laughing Gas, Dody Michelson Orendurff
Consciousness, Neurons, And Laughing Gas, Dody Michelson Orendurff
Dissertations and Theses
Psychological and physiological effects of nitrous oxide resemble those of eight other drug categories. Lipid solubility or hydrate microcrystal theories correlate behavioral measures with measurable parameters of the molecule N2O. N2O, a spindle poison, halts mitosis in metaphase, producing widespread physiological consequences. N2O affects the microtubules of the spindle in a number of specific ways. Microtubules are utilized in other parts of eukaryotic cells, in a wide variety of functions. In neurons, microtubules build and maintain dendritic sensory processes. Since microtubules are built of two dissimilar proteins, constantly assemble and disassemble, and maintain a …
In Vitro And Clinical Studies Of Cefaclor, A New Cephalosporin, Daria Kiani, Tom Madhavan, Keith Burch, Don Pohlod, Evelyn Fisher, Edward L. Quinn
In Vitro And Clinical Studies Of Cefaclor, A New Cephalosporin, Daria Kiani, Tom Madhavan, Keith Burch, Don Pohlod, Evelyn Fisher, Edward L. Quinn
Henry Ford Hospital Medical Journal
In vitro susceptibility studies of 246 clinical isolates demonstrated that this antibiotic was effective against Group A beta hemolytic streptococci, alpha hemolytic streptococci, S. pneumoniae, both penicillinase producing and nonpenicillinase producing Staphylococci, Klebsiella pneumoniae, and Proteus mirabilis. Cephalothin susceptible E. coii were also susceptible to cefaclor. Pseudomonas aeruginosa, Serratia sp., Enterobacter Sp., and Streptococcus faecalis were uniformly resistant to cefaclor. The efficacy and safety of this antibiotic were studied in 27 patients with urinary tract, soft tissue, and respiratory infections. Patients with urinary tract infections became abacteriuric after 48 hours. Patients with soft tissue infections responded well within the first …
Pacific Information Service On Street-Drugs October 1978, School Of Pharmacy
Pacific Information Service On Street-Drugs October 1978, School Of Pharmacy
Pacific Information Service on Street-Drugs
No abstract provided.
Isolation And Chemico-Physiologic Characterization Of A Parotid Hormone Activity From Porcine Glands, Jean-Marc Tieche
Isolation And Chemico-Physiologic Characterization Of A Parotid Hormone Activity From Porcine Glands, Jean-Marc Tieche
Loma Linda University Electronic Theses, Dissertations & Projects
For the past decade, evidence has accumulated which suggests that the resistance of the teeth to dental decay is in part under systemic control. It was shown that the resistance is accomplished through the optimal operation of a dentinal fluid transport mechanism which is believed to be hormonally controlled by the hypothalamic-parotid gland endocrine axis. Although circumstantial evidence for such an endocrine function was strong, the isolation of a parotid hormone which stimulates the dentinal fluid transport mechanism remained to be accomplished.
Using modern biochemical techniques, a methodology was designed to isolate and purify the hormone from porcine parotid glands. …
Pacific Information Service On Street-Drugs February 1978, School Of Pharmacy
Pacific Information Service On Street-Drugs February 1978, School Of Pharmacy
Pacific Information Service on Street-Drugs
No abstract provided.
Pacific Information Service On Street-Drugs January 1978, School Of Pharmacy
Pacific Information Service On Street-Drugs January 1978, School Of Pharmacy
Pacific Information Service on Street-Drugs
No abstract provided.
Buying Veterinary Products : Read The Label First, G A L Ward
Buying Veterinary Products : Read The Label First, G A L Ward
Journal of the Department of Agriculture, Western Australia, Series 4
Chenicals for animal health, and processed feeds must be registered and labelled.
Registration is intended to insure that products are effective for the purpose they are sold, and safe when used according to instructions.
It is important to read the lable to understand the correct use of the product.
Human Placental Alkaline Phosphatase And Steroid Metabolism By Rat Adrenals, Allen G. Meier
Human Placental Alkaline Phosphatase And Steroid Metabolism By Rat Adrenals, Allen G. Meier
Loma Linda University Electronic Theses, Dissertations & Projects
Human placental alkaline phosphatase was purified by butanol extraction, methanol precipitation and chromatography on DEAE-cellulose. The pH optimum was found to be 10.9. The enzyme was competitively inhibited by di-ethyl-p-nitrobenzyl-phosphonate and copper sulfate. An increase in enzymatic activity occurred in the presence of the phosphate ion (HPO4) and ATP.
The enzyme was crystallized from a 40% saturated solution of ammonium sulfate and shown to be homogeneous by sedimentation analysis. Homogeneity of the enzyme was also demonstrated using poly-acrylamide-gel-electrophoresis. At a pH of 7.5% the electrophoretic pattern yielded a single band and showed no significant contamination.
The metabolic transformation …
Pacific Information Service On Street-Drugs May 1977, School Of Pharmacy
Pacific Information Service On Street-Drugs May 1977, School Of Pharmacy
Pacific Information Service on Street-Drugs
No abstract provided.
Dickey-Lincoln School Lakes Project Environmental Impact Statement: Appendix E: Aquatic Ecosystem And Fisheries Studies, Christoipher J. Schmitt, James R. Beltz, Normandeau Associates, Inc., New England Division, United States Army Engineer Division
Dickey-Lincoln School Lakes Project Environmental Impact Statement: Appendix E: Aquatic Ecosystem And Fisheries Studies, Christoipher J. Schmitt, James R. Beltz, Normandeau Associates, Inc., New England Division, United States Army Engineer Division
Dickey-Lincoln School Lakes Project
Throughout this report, the following naming conventions will be used: the study area is the region of the Saint John River from Fort Kent to Ninemile Bridge and the drainage areas of all Saint John tributaries between Lincoln School and Ninemile Bridge within the United States, excluding the Allagash River drainage; the Dickey Lake Area is that region which would be inundated by the proposed Dickey Dam and the drainage areas of all rivers and streams (excluding the Saint John River) flowing into that proposed reservoir; the Lincoln School Reservoir area is that region which would be inundated by the …