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diabet and Kcn

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https://www.readbyqxmd.com/read/26707415/the-association-between-sociodemographic-factors-common-systemic-diseases-and-keratoconus-an-analysis-of-a-nationwide-heath-care-claims-database
#1
Maria A Woodward, Taylor S Blachley, Joshua D Stein
PURPOSE: The purpose of this study was to determine whether an association exists between common systemic diseases, sociodemographic factors, and keratoconus (KCN) among a large, diverse group of insured individuals in the United States. DESIGN: Retrospective longitudinal cohort study. PARTICIPANTS: Sixteen thousand fifty-three patients with KCN were matched 1:1 with persons without KCN. METHODS: Persons with KCN were identified using billing codes and matched by age, gender, and overall health with a control group with no record of KCN...
March 2016: Ophthalmology
https://www.readbyqxmd.com/read/19179090/two-photon-autofluorescence-dynamics-imaging-reveals-sensitivity-of-intracellular-nadh-concentration-and-conformation-to-cell-physiology-at-the-single-cell-level
#2
Qianru Yu, Ahmed A Heikal
Reduced nicotinamide adenine dinucleotide, NADH, is a major electron donor in the oxidative phosphorylation and glycolytic pathways in cells. As a result, there has been recent resurgence in employing intrinsic NADH fluorescence as a natural probe for a range of cellular processes that include apoptosis, cancer pathology, and enzyme kinetics. Here, we report on two-photon fluorescence lifetime and polarization imaging of intrinsic NADH in breast cancer (Hs578T) and normal (Hs578Bst) cells for quantitative analysis of the concentration and conformation (i...
April 2, 2009: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/12481854/effects-of-long-term-low-dose-cyanide-administration-to-rats
#3
Benito Soto-Blanco, Paulo César Marioka, Silvana Lima Górniak
Chronic exposure to cyanide has been associated with development of pancreatic diabetes, hypothyroidism, and several neurological diseases in both humans and animals. However, there is a limited number of experimental models for these pathologies. Thus, in the present study 0, 0.15, 0.3, or 0.6 mg KCN/kg body weight/day was administered for 3 months to 26 rats. On the last day, plasma samples were obtained for glucose, cholesterol, and thyroidal hormone measurement, and the pancreas, thyroids, and whole central nervous system were collected for histopathologic study...
September 2002: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/11985886/does-prolonged-oral-exposure-to-cyanide-promote-hepatotoxicity-and-nephrotoxicity
#4
Altamir B Sousa, Benito Soto-Blanco, José L Guerra, Edna T Kimura, Silvana L Górniak
Long-term exposure to cyanide and/or its main metabolite, thiocyanate, has been associated with goiter, pancreatic diabetes and several neurological disorders. However, very little is found in the literature relating the nephrotoxic and hepatotoxic effects of these substances. Thus, the objective of the present study was to verify the effects of prolonged exposure to potassium cyanide (KCN) in these organs. Forty-six male adults rats, weighing approximately 200 g at the beginning of the experiment, were distributed into five groups-four experimental and one control...
May 24, 2002: Toxicology
https://www.readbyqxmd.com/read/11469509/physiopathological-effects-of-the-administration-of-chronic-cyanide-to-growing-goats-a-model-for-ingestion-of-cyanogenic-plants
#5
B Soto-Blanco, S L Górniak, E T Kimura
Ingestion of cyanogenic plants, such as cassava and sorghum, has been associated with goitre and tropical pancreatic diabetes in both humans and animals. Thus, the objective of the present study was to determine the toxic effects on the thyroid and pancreas in growing goats of prolonged exposure to potassium cyanide (KCN). Thirty-four male goats were divided into five groups dosed with KCN at 0 (control). 0.3, 0.6, 1.2 or 3.0 mg/kg daily for 5 months. Blood samples were obtained in order to determine the glucose, cholesterol, thyroxine (T4), triiodothyronine (T3) and thiocyanate concentrations and for haematological studies; pancreas and thyroid gland were collected for histopathological study...
July 2001: Veterinary Research Communications
https://www.readbyqxmd.com/read/11308117/does-prolonged-cyanide-exposure-have-a-diabetogenic-effect
#6
B Soto-Blanco, A B Sousa, H Manzano, J L Guerra, S L Górniak
Cyanide exposure through cassava consumption has been associated with the development of malnutrition-related diabetes mellitus (MRDM). However, there are few experimental reproductions of this disease. In the present study 42 rats received 0, 9.0 or 12.0 mg KCN/kg bw/d for 15 d, 26 pigs were dosed with 0, 2.0, 4.0 or 6.0 mg KCN/kg for 74 d, and 34 goats received 0, 0.3, 0.6, 1.2 or 3.0 mg KCN/kg for 5 mo. At the end of each experimental period, plasma samples were obtained for glucose and thiocyanate measurement, and the pancreas was collected for histopathologic study...
April 2001: Veterinary and Human Toxicology
https://www.readbyqxmd.com/read/9222413/baroreflex-and-chemoreflex-dysfunction-in-streptozotocin-diabetic-rats
#7
P Dall'Ago, T G Fernandes, U F Machado, A A Belló, M C Irigoyen
Several investigators have demonstrated that streptozotocin (STZ) diabetes induces changes in the autonomic control of the cardiovascular system. Changes in cardiovascular function may be related to peripheral neuropathy. The aim of the present study was to analyze changes in heart rate (HR) and arterial pressure (AP) as well as baroreflex and chemoreflex sensitivity in STZ-induced diabetic male Wistar rats (STZ, 50 mg/kg, i.v., 15 days). Intra-arterial blood pressure signals were obtained for control and diabetic rats (N = 9, each group)...
January 1997: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/8621016/mitochondrial-fad-glycerophosphate-dehydrogenase-and-g-protein-coupled-inwardly-rectifying-k-channel-no-evidence-for-linkage-in-maturity-onset-diabetes-of-the-young-or-niddm
#8
COMPARATIVE STUDY
M G Warren-Perry, M Stoffel, P J Saker, Y Zhang, L J Brown, M J MacDonald, R C Turner
Two genes that have potentially important regulatory roles in insulin secretion are both located on chromosome 2q24.1. G-protein-coupled muscarinic potassium channel (GIRK1) is an inwardly rectifying K+ channel that helps to maintain the resting potential and excitability of cells. Mitochondrial FAD-linked glycerophosphate dehydrogenase (m-GDH) catalyzes a rate-limiting step of the glycerol phosphate shuttle in pancreatic islets. Reduced m-GDH activity has been demonstrated in islets isolated from diabetic subjects compared with islets from nondiabetic control subjects and from the diabetic GK rat...
May 1996: Diabetes
https://www.readbyqxmd.com/read/8376593/aminoguanidine-treatment-increases-elasticity-and-decreases-fluid-filtration-of-large-arteries-from-diabetic-rats
#9
M S Huijberts, B H Wolffenbuttel, H A Boudier, F R Crijns, A C Kruseman, P Poitevin, B I Lévy
The accumulation of advanced glycosylation end-products (AGEs) on collagen and the subsequent stiffening of this matrix protein in diabetes has been described many years ago. Structural modification of collagen in the arterial wall might have important effects on arterial elasticity. Aminoguanidine is known to decrease the formation of AGEs. In this study we evaluated the effects of aminoguanidine treatment on different parameters reflecting arterial wall elasticity in diabetic rats. We demonstrated that treatment of diabetic rats with aminoguanidine resulted in a significant increase in carotid static compliance (+39%, P < 0...
September 1993: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/6260823/hexose-transport-in-normal-and-sv40-transformed-human-endothelial-cells-in-culture
#10
R F Corkey, B E Corkey, M A Gimbrone
The mechanism of glucose entry into human vascular endothelial cells was studied in monolayer cultures of normal (primary) and virally (SV40) transformed umbilical vein endothelium. Radioisotopic uptake studies with the glucose analogues 2-deoxy-D-glucose, and 3-O-methyl-D-glucose, and the nonmetabolizable stereoisomer L-glucose, indicated the presence of a saturable, stereospecific hexose carrier mechanism in both cell types. In other experiments with D-glucose and 3-O-methyl-D-glucose, the phenomenon of countertransport was demonstrable...
March 1981: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/6190972/a-new-high-performance-liquid-chromatographic-procedure-to-quantitate-hemoglobin-a1c-and-other-minor-hemoglobins-in-blood-of-normal-diabetic-and-alcoholic-individuals
#11
T H Huisman, J B Henson, J B Wilson
A new HPLC procedure is described for the separation and quantitation of minor human Hb variants. The cation exchanger, Synchropak CM 300, is a silica support with a bonded polymeric coating of carboxylic acid residues. The chromatogram is developed with 0.03M Bis-Tris-KCN buffers, pH 6.40, and a Na-acetate gradient increasing from 0 to 0.1125M. As many as 11 minor Hbs (including Hb A2) can be isolated. Some of these have been identified through rechromatography of the minor Hb zones obtained by Bio-Rex-70 chromatography...
August 1983: Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/2792231/lens-redox-fluorometry-pyridine-nucleotide-fluorescence-and-analysis-of-diabetic-lens
#12
K Tsubota, J M Krauss, K R Kenyon, R A Laing, S Miglior, H M Cheng
We performed both ex vivo and in vivo fluorometric analyses of pyridine nucleotides (PN) in rabbit and rat lenses. Rabbit lens PN fluorescence (99% NADH) was found to have an excitation maximum at 366 nm and an emission maximum at 462 nm (366:462). The only other fluorescent chromophore in that region of the spectrum has excitation and emission peaks at 328 and 460 nm, respectively. Anaerobic glycolysis in the lens was stimulated by KCN, a known inhibitor of mitochondrial respiration, after which a time-study of fluorescence intensities was performed...
September 1989: Experimental Eye Research
https://www.readbyqxmd.com/read/1632832/synergism-in-insulin-like-effects-of-molybdate-plus-h2o2-or-tungstate-plus-h2o2-on-glucose-transport-by-isolated-rat-adipocytes
#13
Y Goto, K Kida, M Ikeuchi, Y Kaino, H Matsuda
The effect of molybdate, tungstate, molybdate plus H2O2 or tungstate plus H2O2 on 3-O-methylglucose (3-O-MG) uptake was studied in isolated rat adipocytes to investigate whether these agents possess an insulin-like action. High concentrations (10-30 mM) of molybdate or tungstate significantly stimulated the uptake of 3-O-MG while 1 mM of the metaloxides did not. The combination of 1 mM molybdate and 1 mM H2O2, or 1 mM tungstate and 1 mM H2O2 induced striking stimulation of the uptake of 3-O-MG in a synergistic manner, whereas 1 mM H2O2 alone showed only a small effect...
July 7, 1992: Biochemical Pharmacology
https://www.readbyqxmd.com/read/1334411/cyclic-amp-impairs-the-rapid-effect-of-insulin-to-enhance-cell-surface-insulin-binding-capacity-in-rat-adipocytes
#14
J W Eriksson, P Lönnroth, U Smith
The aim of this study was to characterize further the interaction between cyclic AMP (cAMP) and insulin binding and action. Rat adipocytes were preincubated at 37 degrees C for 20 min, and after energy depletion with KCN, cell-surface 125I-insulin binding was measured. As recently reported [Eriksson, Lönnroth & Smith (1992) Diabetes 41, 707-714], preincubation with insulin rapidly increased the number of cell-surface insulin binding sites up to approximately 5-fold through recruitment within the plasma membrane...
December 1, 1992: Biochemical Journal
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