Medical Specialties Commons^™

The Effect Of Electrical Stimulation Of The Dorsal Raphe Nucleus On Local Cerebral Glucose Metabolism And Epileptogenesis In The Rat, Clifford C. Douglas

Loma Linda University Electronic Theses, Dissertations & Projects

Anatomic connections between the dorsal raphé and the hippocampus have been described in the literature; however, the understanding of the functional importance of these connections is not complete. In these studies the "functional" raphé-hippocampal pathway was elucidated first by the 2-deoxy-d-glucose (2-DG) method, and second by the effect of dorsal raphé electrical stimulation on kindled seizure in the rat. In the 2-DG study, differences in local rates of cerebral glucose metabolism were quantified. The pattern of 2-DG uptake differed significantly from controls (animals with electrodes placed and not receiving an electrical stimulus) and subjects stimulated in the pontine oral reticular …

The Use Of Self Blood Glucose Monitoring And Its Relationship To Effective Management For People With Insulin Dependent Diabetes Mellitus, Maureen Unsworth

Theses : Honours

It is believed that people who effectively self manage their own diabetes will achieve higher levels of health and well being (Pender, 1987). Although diabetes education has increased rapidly in the last 10 years, the emphasis has been placed on increasing people's knowledge of diabetes as a medical condition, which does not necessarily ensure effective self management of diabetes. Previous research suggests that self blood glucose monitoring (SBOM) is an effective tool for promoting the use of blood glucose levels as a basis for initiating behaviour changes related to eating, exercise and insulin dosage. Yet, while most people with diabetes …

Gestational Diabetes In A Developing Country, Experience Of Screening At The Aga Khan University Medical Centre, Karachi, Khalid S. Khan, Javaid H. Rizvi, Rahat N. Qureshi, Rauf Mazhar

Department of Obstetrics & Gynaecology

In order to determine the prevalence of glucose intolerance in pregnancy, 1267 consecutive women attending the antenatal clinic of the Aga Khan University Medical Centre were subjected to a 75 g glucose challenge followed 2 hr later by plasma glucose determination irrespective of gestation on the first antenatal visit. The test was repeated at 28-32 weeks of gestation if the patients had an abnormal initial screen at less than 28 weeks gestation and a normal glucose tolerance test on diagnostic follow-up and for those who had a risk factor for gestational diabetes and a normal initial screen at less than …

Evaluation Of A Patient Education Program For Patients With Non-Insulin Dependent Diabetes (Type Ii), Helen M. Walker

Theses : Honours

The purpose of this study was to evaluate a group outpatient program for patients with non-insulin dependent diabetes (Type II). It endeavoured to establish whether at the completion of a patient education program, and again at the 3 month follow-up period, the patients were complying with : (a) the recommended dietary plan, (b) the exercise program, and (c) were monitoring blood glucose levels at home, as evidenced by weight loss and metabolic control of their diabetes. The study also investigated factors influencing non-compliance. The theoretical rationale used for this study was Pender's Health Promotion Model, which theorises that health-promoting behaviour …

Microwell Based Competitive Enzyme Immunoassay For Quantifying Serum Triiodothyronine And Thyroxine Levels, Yiwen Yang

Chemistry & Biochemistry Theses & Dissertations

A microwell based competitive enzyme immunoassay for determination of total thyroxine and triiodothyronine in human serum was developed with use of horseradish peroxidase conjugate. The assay, which can be performed in only 1.5 hours at room temperature, involves simultaneous incubation of T₃- or T₄- HRPO conjugate and serum sample in anti-T₃ or anti-T₄ gamma globulin fraction coated polystyrene microwells.

Isolation of anti-T₃ and anti-T₄ gamma globulin fractions were accomplished from whole antiserum by using DEAE-cellulose chromatograph. A carbodiimide coupling method was described to prepare the T₄- and T₃-HRPO …

Autonomic Nervous System And Cholesterol Transport, Yuan-Line Hung

Loma Linda University Electronic Theses, Dissertations & Projects

The effect of autonomic nervous system on cholesterol transport is of clinical interest because the relationship between lipoprotein metabolism and atherogenesis is expressed in coronary artery disease.

Generally speaking, beta blockers increase serum VLDL level but decrease both HDL and HDL₂ cholesterol levels without affecting the LDL in humans. We are unaware of reports concerning the effects of metoprolol on lipoprotein metabolism nor comparison of the effects of metoprolol and propranolol in the unhandled rat model. In part I we employed the unhandled rats to compared the effects of these 2 drugs administered with the drinking water in order …

Regeneration Of Meissner Corpuscles In Diabetic Mice Following Median Nerve Crush, Bonnie J. Forrester

Loma Linda University Electronic Theses, Dissertations & Projects

The hyperglycemic metabolic condition found in diabetes mellitus leads to the development of sensory neuropathies and causes delayed and incomplete neuronal regeneration. Diabetic sensory neuropathy has been shown to contribute to the impairment of light touch and low frequency vibratory perception. It is proposed that the regeneration of receptors that detect these sensations will be delayed and incomplete in diabetic animals with uncontrolled hyperglycemia. This study addresses the effects of diabetes on the regeneration of Meissner corpuscles, distal sensory endings that perceive light touch and low frequency vibration.

Corpuscles from 60 diabetic mice, and their age-matched, non-diabetic littermates, were examined …

The Role Of The Insulin Receptor Tyrosine Kinase In Two Models Of Insulin Resistance, Nancy Barchus Block

MUSC Theses and Dissertations

Activation of the insulin receptor tyrosine kinase in vitro and in vivo was studied in two rat models of insulin resistance: hypercortisolemia and streptozotocin-induced diabetes. In control rats, intravenous insulin administration resulted in dose-dependent in vivo activation of the skeletal muscle insulin receptor kinase. Chronic cortisone treatment did not affect the kinase activity of receptors solubilized from muscle after activation with insulin in vivo or in vitro. In contrast, diabetes depressed skeletal muscle insulin receptor kinase activation in vivo by ~50%. Diabetes impaired the in vitro insulin stimulation of receptor kinase activity from skeletal muscle and liver towards the substrate …

Age-Related Changes In Meissner Corpuscles Of Diabetic Mice As Observed By Electron Microscopy, Vicky R. Ras

Loma Linda University Electronic Theses, Dissertations & Projects

Light touch and low-frequency vibration sense are often impaired in diabetic patients. Meissner corpuscles are distally located mechanoreceptors that respond to these stimuli. Peripheral sensory neuropathy in diabetes progresses from distal to proximal, therefore, Meissner corpuscles are ideally suited to study diabetic neuropathy in the C57BL/Ks (db/db) mouse.

Corpuscles from the forepaw digital pads of 9 diabetic and 9 nondiabetic littermates were studied by electron microscopy. These were divided into 3 age groups; 2.5 months, 10 months, and 17 months old.

Ultrastructural changes observed within various receptor components were myelin figures, multivesicular bodies, vacuoles, basal lamina duplication, abnormal and enlarged …

Decreased Triiodothyronine Binding To The Hepatic Nuclear Thyroid Hormone Receptor In The Diabetic Mouse, Thomas J. Dewind

Loma Linda University Electronic Theses, Dissertations & Projects

The diabetic C57BL/KsJ-db m mouse has abnormal thyroid hormone levels and indications of thyroid hormone resistance. To investigate the basis of these abnormalities, the hepatic nuclear thyroid hormone receptor was extracted with 0.4 M KCl, 1.1 mM MgCl₂, 20 mM Tris/HCl, pH 7.9 from hepatocyte nuclei of normal C57BL/KsJ, heterozygous C57BL/KsJ-db m (db/m), and diabetic C57BL/KsJ-db m (db/db) mice. Normal and heterozygous mice were grouped together as the controls. Triiodothyronine (T₃) binding studies at 4°C using nitrocellulose filtration to separate free T₃ from receptor bound T₃ demonstrated an …

The Effect Of A Self Directed Program On Locus Control And Control Of Diabetes, Mary Elizabeth Boyle

Theses & Dissertations

Does a self directed program have a significant impact on an individual's locus of control and the control of diabetes as measured by glycosolated hemoglobin?

Insulin And Glucagon Responses To Dietary Protein In Diabetic And Nondiabetic Men, Monica L. Blomstedt

Loma Linda University Electronic Theses, Dissertations & Projects

Five men with non-insulin-dependent diabetes mellitus and fourteen nondiabetic men, were given test meals with soy protein, casein or additional carbohydrate in place of protein. Blood levels of insulin, glucagon, glucose and lipids were measured at fasting, one-half hour and two hours postprandial. To all meals, the nondiabetic subjects responded with a quick rise of the insulin level which decreased at two hours. In contrast, the diabetics showed a significantly lower insulin response at one-half hour (p < 0.05), but a tendency to higher levels at two hours. The same pattern was observed in the insulin to glucagon ratio. No significant difference between the meals was found in regard to insulin or glucagon responses, suggests that a sustained, although delayed postprandial insulin response, may be a precursor to the higher cholesterol and increased risk for cardiovascular disease among diabetics.

Magnesium, Copper And Zinc Concentrations In Blood From Children With Diabetes Mellitus, Linda Lowers Jenkins

Chemistry & Biochemistry Theses & Dissertations

Trace element levels in blood from diabetic children were investigated and compared to control children. Plasma, erythrocyte, mononuclear and polymorphonuclear cells were analyzed for magnesium, copper, and zinc content. Leukocyte separation was performed by density gradient centrifugation on Ficoll-Hypaque, followed by washing steps to remove platelet contamination and hypotonic lysis to remove red cell contamination. Polarized Zeeman-effect atomic absorption spectroscopy was used for trace metal analysis.

Decreased plasma magnesium levels were observed in the diabetic children. This finding is well documented and probably due to increased urinary magnesium loss from glycosuria. Lymphocyte magnesium levels in the diabetic children were also …

The Effect Of Intraperitoneally Administered Thyroxine, Thiidothyronine And Iopanoic Acid On The In Vivo And In Vitro Oxygen Consumption Rates Of Normal (C57bl/Ksj Db/M) And Diabetic (C57bl/Ksj Db/Db) Mice, A. Kay. Kalousek

Theses Digitization Project

No abstract provided.

The Effects Of Blood Glucose Self-Monitoring On Self-Esteem And The Ability To Apply Knowledge About Diabetes Mellitus, Nancy-Lu F. Moul

Ellmer School of Nursing Theses & Dissertations

This study explored the effect of blood glucose self-monitoring on two dependent variables: (a) the diabetic client's self-esteem, and (b) the diabetic client's ability to apply knowledge about diabetes mellitus. The sample consisted of two groups of adult Type I diabetic clients. Group I consisted of ten clients who had been performing blood glucose self-monitoring for at least one year, and group II consisted of ten clients who had been performing urine testing for at least one year. A questionnaire was utilized which included: (a) a demographic data sheet, (b) a diabetic knowledge tool, and (c) a self-esteem tool. The …

The Role Of The Insulin Receptor In Skeletal Muscle Insulin Resistance: Evaluation Of Two Animal Models, Charles F. Burant

MUSC Theses and Dissertations

The role of the insulin receptor in muscle insulin resistance was studied. Denervation of skeletal muscle resulted in the rapid appearance of a decrease in basal and insulin stimulated glucose transport, glycogen synthesis and a defect in the activation of glycogen synthase which was independent of levels of glycogen in the muscle. The effect was seen in both predominantly red and predominantly white muscle. There was no change in the denervated muscles' sensitivity to epinephrine-mediated decrease in glycogen synthesis or glycogen content, nor was there a major change in the insulin binding capacity of denervated muscles. A technique was developed …

Age-Related Changes Of Neurites In Meissner Corpuscles Of Diabetic, Vicky R. Ras

Loma Linda University Electronic Theses, Dissertations & Projects

This thesis is based on a qualitative and quantitative study of the neural component of Meissner corpuscles of diabetic and non-diabetic mice. Age-related changes were also documented in these mechanoreceptors. Corpuscles from forty-six diabetic mice and forty-six non-diabetic mice ranging from 2.5 to 17 months old were studied. Forepaw index digital pads were formalin-fixed and frozen-sectioned parallel to each digit and perpendicular to the skin. Serial sections were then silver-impregnated to allow light microscopic examination of the neurites in the corpuscles.

Neurites became more coarse, tortuous, branched, varicose, and thus more complex until middle age. Corpuscle size appeared greatest at …

Registered Nurses' Ability To Discriminate Similar Human Need Fulfillment Alterations Specific To Chronic Obstructive Pulmonary Disease And To Diabetes Mellitus, Kathleen Bowen Waite

Ellmer School of Nursing Theses & Dissertations

The problem for this research study was to ascertain if registered nurses of varying educational backgrounds and experience discriminated similar human needs as being altered by specific pathologic states. The two pathologic states studied were chronic obstructive pulmonary disease and diabetes mellitus, chosen for their high prevalence in the population. A population sample of 55 registered nurses practicing on medical units in five hospital settings were surveyed. Data for this study were collected using the Human Needs Assessment Scales developed for this study. It was determined that registered nurses in this study did discriminate similar human need fulfillment alterations specific …

The Effect Of Self-Help Support Groups On Self Esteem And Blood Glucose In Young Insulin-Dependent Diabetics, Linda L. Woertz

Loma Linda University Electronic Theses, Dissertations & Projects

Successful adaptation to diabetes is probably a function of many factors: the stress involved, the rewards, the motivation of the individual, and the self concept. The more optimal the self concept the more optimal the behavior may be. By helping the patient shape a positive self concept, a base can be built for blood glucose control (Bruhn, 1977, pp. 93-97). One method of improving self concept or self esteem may be through the development of self-help support groups for diabetics.

The purpose of this study was to evaluate the effect of self-help support group intervention on the levels of self …

A Comparison Of Self-Esteem And Health Locus Of Control In Adolescents With Insulin Dependent Diabetes Mellitus, Janice Mace

Loma Linda University Electronic Theses, Dissertations & Projects

This study was a descriptive survey establishing a baseline level of self-esteem and health locus of control in insulin dependent diabetes mellitus (IDDM) adolescents. The purpose of the research was to study and describe health behaviors of IDDM adolescents in regards to self-concept and health locus of control. These behaviors are believed to have life-long ramifications on the IDDM adolescent's health status.

The sample consisted of 91 IDDM adolescents, 34 male and 57 female, in a nonrandom convenience cluster attending a 10-day summer camp.

Null hypothesis one was: Insulin dependent diabetes mellitus would make no difference at the .05 level …

The Relationship Of Locus Of Control Of The Diabetic Patient And Compliance With Medical Regimen, Lois Daniel

Loma Linda University Electronic Theses, Dissertations & Projects

The literature indicates that many diabetic patients do not adhere to their prescribed medical regimen and that there is a need to discover factors that stimulate compliant behavior. It has been proposed that the patient's decision to accept or reject treatment has many determinants. This study explored the effect of one such determinant, the locus of control (the source of the stimulus for a person's behavior). It was hypothesized that a person with an internal locus (one who believes his actions influence his future) would be more likely to comply with a medical regimen than one with an external locus …

Oral Lichen Planus : A Clinical Study Of The Association With Diabetes Mellitus And Vascular Hypertension, Gordon M. Rick

Loma Linda University Electronic Theses, Dissertations & Projects

This investigation concerns the relationship of diabetes mellitus and vascular hypertension to oral lichen planus. Questionnaires were sent to 470 patients with oral lichen planus: 286 responded. Of these patients 103 were examined clinically, and 74 with current lesions were divided into ''keratotic'' and ''erosive'' categories. These patients underwent three-hour oral glucose tolerance tests; also, their asterial blood pressure was determined. In the survey group, diabetes was reported about three times more frequently by those with "erosive"; oral lichen planus than by those ''keratoic" lesions. The overall prevalence of diabetes was about two and one-half times greater than expected compared …

The Effect Of Elevated Glucose On Neutrophilic Phagocytosis In Genetically Diabetic Mice, Larry B. Thompson

Loma Linda University Electronic Theses, Dissertations & Projects

Infiltration to an injury site or area of bacterial contamination by polymorphonuclear leucocytes (or neutrophils) is an early and essential phase of the early inflammatory reaction. Their action on foreign matter is the most critical step taken by body defense mechanisms in the first 24 hours. Anything which interferes with that action, phagocytosis, greatly hampers early inflammation. This study was designed to see the effect of elevated glucose levels on neutrophil phagocytosis in a unique strain of genetically diabetic mice.

Twenty-two diabetic and twenty-four control female mice were used. Blood glucose determinations and total white counts were made on each …

A Study Of Patients With Recently Diagnosed Diabetes To Ascertain Extent Of Utilization Of Instruction, Ruth Yvonne Stafford

Loma Linda University Electronic Theses, Dissertations & Projects

This descriptive study was conducted to discover to what extent patients with diabetes utilized instruction received. If they did not, the reason why would be searched for. It was also hoped that area of instruction could be defined which needed greater emphasis while the patient was hospitalized at the time of diagnosis.

The interview with the aid of the interview guide was chosen as a data-gathering tool. The guide was complied and approve. Patients were selected from a review of medical records in the selected hospital, and their physicians contacted for permission to include their patient(s) in the study. The …

Effect Of Isocaloric Unsaturated Fats On Serum Cholesterol Of Patients Treated With Hypocholesterolemic Agents, Yvonne Marie Hatley

Loma Linda University Electronic Theses, Dissertations & Projects

The effect of a high unsaturated-low saturated fat diet on serum cholesterol levels were studied. Subjects were clinic patients receiving the following hypocholesterolmeic agents: triparanol (MER-29), diildothyroacetic acid (Diac), dextrothyroxine (d-T₄) and 3-methoxy-16, alpha-methyl-1,3,5, (10)-estratriene-16 beta, 17 beta-diol (Manvene or Anvene).

Fifteen hypercholesterolemic patients, eleven of whom were diabetic, were placed on diets with prescribed amounts of unsaturated fat. The caloric distribution was 40 per cent carbohydrate, 20 per cent protein, and 40 per cent fat. The level of unsaturated fat was 70 per cent of the total fat.

Seventy-one per cent of the patients on the hypocholesterolemic …

A Review Of Drug Addiction And A Study Of Its Relation To Carbohydrate Metabolism, Eppie Chung Hartsuiker

Loma Linda University Electronic Theses, Dissertations & Projects

The specter of addiction eventually involves everyone of the community. It is a three-fold problem of socio-economic, psychological, and physiological factors. The least understood is the physiological or biochemical aspect of addiction.

It has been postulated that an upset in carbohydrate metabolism may be a biochemical cause of addiction. Several avenues were employed to investigate this possible cause of addiction.

1. A diet survey was conducted and revealed a greater consumption of refined carbohydrates, confections and alcoholic beverages in addicts.

2. Five-hour oral glucose tolerance tests were performed on 7 addicts and 12 non-addicts. These tests revealed that there were decreased glucose …

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Pharmacological Studies Of Antidiabetic Chinese Herbs, Mun Fa Lee

Loma Linda University Electronic Theses, Dissertations & Projects

Rehmannia glutinosa, Atractylus ovata, and Polygonatum chinense have all been employed by the Chinese as oral antidiabetic agents and reported by Min (1928), Kin (1931), and Li et al. (1936) to possess hypoglycemic activity. This prompted the pharmacological studies of these herbs.

Materials and methods. Their pharmacognosy was condensed from all available Chinese and scientific literature. Preliminary chemical and physical analyses included determinations for moisture, ash, crude fat, carbohydrates, protein, phosphorus, pH, alkaloids, melting point, and spectroscopy. Employing the Somogyi-Nelson method, their glycemic activity was studied in rats, rabbits, and dogs. Stress reactions were minimized. The effect …