scholarly journals Serum triglyceride and cholesterol concentrations and lipoprotein profiles in dogs with naturally occurring pancreatitis and healthy control dogs

2020 ◽  
Vol 34 (2) ◽  
pp. 644-652
Author(s):  
Panagiotis G. Xenoulis ◽  
Paul J. Cammarata ◽  
Rosemary L. Walzem ◽  
Jan S. Suchodolski ◽  
Jörg M. Steiner
Keyword(s):  
Serum Triglyceride ◽  
Naturally Occurring ◽  
Healthy Control ◽  
Lipoprotein Profiles

scholarly journals Polymorphonuclear function in naturally occurring renal failure in dogs

2009 ◽  
Vol 54 (No. 5) ◽  
pp. 236-243 ◽  
Author(s):  
S. Kralova ◽  
L. Leva ◽  
M. Toman
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Clinical Signs ◽  
Human Medicine ◽  
Strong Positive Correlation ◽  
Significant Elevation ◽  
Naturally Occurring ◽  
Main Effect ◽  
Healthy Control ◽  
Leukocyte Counts

Chronic renal failure causes immunosuppression in people and is thought to be one of the causes of non-infectious secondary immunosuppression in dogs. The purpose of this study was to evaluate changes in counts and activity of polymorphonuclears in dogs with chronic renal failure in various stages. Haematological, biochemical examinations and examination of non-specific immune response cells (total and differential leukocyte counts, phagocytosis of methacrylate particles, chemiluminescence test, and level of lysozyme) were performed in blood samples obtained from these dogs. Neutrophilia, lymphopoenia and a decreased number of eosinophils in comparison with healthy control were the main findings in groups with clinical signs. We found the statistically highly significant elevation of lysozyme level; it was in a strong positive correlation with the level of urea, creatinine and phosphorus. We did not find any statistically significant changes in phagocytosis process and other serological factors. In conclusion, despite the reports from human medicine, chronic renal failure in dogs does not alter phagocytosis. From this aspect, the elevation of lysozyme level is the main effect of uraemia.

scholarly journals Effect of a low‐fat diet on serum triglyceride and cholesterol concentrations and lipoprotein profiles in Miniature Schnauzers with hypertriglyceridemia

2020 ◽  
Vol 34 (6) ◽  
pp. 2605-2616
Author(s):  
Panagiotis G. Xenoulis ◽  
Paul J. Cammarata ◽  
Rosemary L. Walzem ◽  
Jan S. Suchodolski ◽  
Jörg M. Steiner
Keyword(s):  
Serum Triglyceride ◽  
Low Fat ◽  
Low Fat Diet ◽  
Lipoprotein Profiles

scholarly journals Early onset airway obstruction in response to organic dust in the horse

2007 ◽  
Vol 102 (3) ◽  
pp. 1071-1077 ◽  
Author(s):  
Christopher M. Deaton ◽  
Laura Deaton ◽  
Eduard Jose-Cunilleras ◽  
Thea L. Vincent ◽  
Alan W. Baird ◽  
...  
Keyword(s):  
Airway Obstruction ◽  
Early Phase ◽  
Lavage Fluid ◽  
Phase Response ◽  
Protective Mechanism ◽  
Organic Dust ◽  
Histamine Concentration ◽  
Asthmatic Patients ◽  
Naturally Occurring ◽  
Healthy Control

Equine recurrent airway obstruction (RAO) has been used as a naturally occurring model of human asthma. However, it is unknown whether there is an early-phase response in RAO. The aim of this study was to determine whether exposure to organic dust induces immediate changes in lung function in RAO-affected horses, which could be mediated by airway mast cells. Six RAO-affected horses in remission and six control horses were challenged with hay-straw dust suspension by nebulization. Total respiratory resistance at 1 Hz, measured by forced oscillation, was increased from 0.62 ± 0.09 cmH2O·l−1·s (mean ± SE) to 1.23 ± 0.20 cmH2O·l−1·s 15 min after nebulization in control horses ( P = 0.023) but did not change significantly in the RAO group. Total respiratory reactance at 1 Hz ( P = 0.005) was significantly lower in the control horses (−0.77 ± 0.07 cmH2O·l−1·s) than in the RAO group (−0.49 ± 0.04 cmH2O·l−1·s) 15 min after nebulization. Bronchoalveolar lavage fluid (BALF) histamine concentration was significantly elevated 10 and 20 min postnebulization in control horses but not in RAO horses. Minimum reactance at 1 Hz in the early postnebulization period significantly correlated with both prechallenge BALF mast cell numbers ( r = −0.65, P = 0.02) and peak BALF histamine concentration postnebulization ( r = −0.61, P = 0.04). In conclusion, RAO horses, unlike human asthmatic patients, do not exhibit an early-phase response. However, healthy control horses do demonstrate a mild but significant early (<20 min) phase response to inhaled organic dust. This response may serve to decrease the subsequent dose of dust inhaled and as such provide a protective mechanism, which may be compromised in RAO horses.

scholarly journals Nightmares and Serum Cholesterol Level: A Preliminary Report

2005 ◽  
Vol 50 (6) ◽  
pp. 361-364 ◽  
Author(s):  
Mehmet Yucel Agargun ◽  
Mustafa Gulec ◽  
Ali Savas Cilli ◽  
Hayrettin Kara ◽  
Ramazan Sekeroglu ◽  
...  
Keyword(s):  
Serum Lipid ◽  
Colorimetric Method ◽  
Density Lipoprotein ◽  
Serum Triglyceride ◽  
Hdl Cholesterol ◽  
Lipid Levels ◽  
Control Subjects ◽  
Serum Lipid Levels ◽  
Healthy Control ◽  
Nightmare Disorder

Objective: To examine whether there is a relation between nightmares and serum lipid levels. Methods: Fifteen subjects who met DSM-IV criteria for the diagnosis of nightmare disorder and 15 healthy control subjects participated in the study. We used an enzymatic colorimetric method for cholesterol and triglyceride determination. We measured high-density lipoprotien (HDL) cholesterol using the direct HDL-cholesterol method. Low-density lipoprotein (LDL) was calculated according to the Friedewald formula. Results: Patients with nightmare disorder had lower serum triglyceride, lower total cholesterol, and lower LDL levels than healthy control subjects. Conclusion: These findings suggest that nightmares are associated with low serum lipid levels.

Altered lipoprotein profiles in cats with hepatic lipidosis

2018 ◽  
Vol 21 (4) ◽  
pp. 363-372 ◽  
Author(s):  
Tomomi Minamoto ◽  
Rosemary L Walzem ◽  
Alexandra J Hamilton ◽  
Steve L Hill ◽  
Harold R Payne ◽  
...  
Keyword(s):  
Serum Cholesterol ◽  
Clinical Chemistry ◽  
Area Under The Curve ◽  
Serum Lipoprotein ◽  
High Density Lipoproteins ◽  
Hepatic Lipidosis ◽  
Single Spin ◽  
Healthy Control ◽  
Specific Fraction ◽  
Lipoprotein Profiles

Objectives The aim of this study was to assess serum lipoprotein profiles using rapid single-spin continuous lipoprotein density profiling (CLPDP) in healthy control cats and cats with hepatic lipidosis (HL). Methods Analysis of serum lipoprotein profiles using the CLPDP was performed in 23 cats with HL and 20 healthy control cats. The area under the curve for each lipoprotein fraction, triglyceride (TG)-rich lipoproteins (TRLs), low-density lipoproteins (LDLs) and high-density lipoproteins (HDLs), was calculated. Serum cholesterol and TG concentrations were measured using a clinical chemistry analyzer. Results Serum cholesterol and TG concentrations were not significantly different between healthy control cats and cats with HL ( P = 0.5075 and P = 0.2541, respectively). LDL content was significantly higher in cats with HL than in healthy control cats ( P = 0.0001), while HDL content was significantly lower in cats with HL than in healthy control cats ( P = 0.0032). TRL content was not significantly different between the two groups ( P = 0.0699). The specific fraction (1.037–1.043 g/ml) within nominal LDL in serum distinguished healthy control cats from cats with HL with a sensitivity of 87% and a specificity of 90%. Conclusions and relevance Serum lipoprotein profiles were altered in cats with HL, even though serum cholesterol and TG concentrations were not significantly different compared with healthy control cats. The CLPDP might be a useful tool for assessing lipid metabolism in cats with HL.

scholarly journals Evaluation of density gradient ultracentrifugation serum lipoprotein profiles in healthy dogs and dogs with exocrine pancreatic insufficiency

2018 ◽  
Vol 30 (6) ◽  
pp. 878-886 ◽  
Author(s):  
Tomomi Minamoto ◽  
Joseph C. Parambeth ◽  
Rosemary L. Walzem ◽  
Harold R. Payne ◽  
Jonathan A. Lidbury ◽  
...  
Keyword(s):  
Density Gradient ◽  
Pancreatic Insufficiency ◽  
Serum Lipoprotein ◽  
Exocrine Pancreatic Insufficiency ◽  
Density Gradient Ultracentrifugation ◽  
Disease States ◽  
Transmission Electron ◽  
Healthy Control ◽  
Canine Serum ◽  
Lipoprotein Profiles

Changes in proportions of lipoprotein classes have been described in disease states in humans. In veterinary medicine, hyperlipidemia can cause complications, such as cutaneous xanthomas, liver disease, cholelithiasis, pancreatitis, glomerular disease, lipemia retinalis, or peripheral neuropathy, but there are few reports regarding lipoproteins in diseased animals. For canine serum, we partially validated continuous lipoprotein density profiling (CLPDP), a novel density gradient ultracentrifugation technique. We examined canine lipoproteins separated by CLPDP by transmission electron microscopy (TEM). We compared lipoprotein profiles between healthy control dogs ( n = 29) and dogs with exocrine pancreatic insufficiency (EPI; n = 28) using CLPDP. Dogs with EPI included those untreated (EPI-NT; n = 6) and those treated with enzyme supplementation (EPI-T; n = 22). Our preliminary assay validation showed that CLPDP was repeatable (CV = 11.2%) and reproducible (CV = 10.6%) in canine serum. The diameters of lipoproteins analyzed by TEM were similar to those reported previously. Dogs in the EPI-NT group had more severe dyslipidemia than dogs in the EPI-T group. Dogs in the EPI-T group had lipoprotein profiles similar to healthy control dogs. CLPDP might be a useful tool for evaluating dyslipidemia in dogs.

Pathology of Bone Cells in Pigs with Experimental Turbinate Osteoporosis (Atrophic Rhinitis)

1971 ◽  
Vol 29 ◽  
pp. 304-305
Author(s):  
A. W. Fetter ◽  
C. C. Capen
Keyword(s):  
Mucous Membrane ◽  
Bone Cells ◽  
Atrophic Rhinitis ◽  
Infectious Agents ◽  
Metabolic Disturbances ◽  
Progressive Reduction ◽  
Naturally Occurring ◽  
Fundamental Cause ◽  
Osteocytic Osteolysis ◽  
Uncertain Etiology

Atrophic rhinitis in swine is a disease of uncertain etiology in which infectious agents, hereditary predisposition, and metabolic disturbances have been reported to be of primary etiologic importance. It shares many similarities, both clinically and pathologically, with ozena in man. The disease is characterized by deformity and reduction in volume of the nasal turbinates. The fundamental cause for the localized lesion of bone in the nasal turbinates has not been established. Reduced osteogenesis, increased resorption related to inflammation of the nasal mucous membrane, and excessive resorption due to osteocytic osteolysis stimulated by hyperparathyroidism have been suggested as possible pathogenetic mechanisms.The objectives of this investigation were to evaluate ultrastructurally bone cells in the nasal turbinates of pigs with experimentally induced atrophic rhinitis, and to compare these findings to those in control pigs of the same age and pigs with the naturally occurring disease, in order to define the fundamental lesion responsible for the progressive reduction in volume of the osseous core.

High Resolution Replication of Organoclay Surfaces

1982 ◽  
Vol 40 ◽  
pp. 576-577
Author(s):  
W. W. Barker ◽  
W. E. Rigsby ◽  
V. J. Hurst ◽  
W. J. Humphreys
Keyword(s):  
Clay Mineral ◽  
Organic Molecule ◽  
Organic Molecules ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Naturally Occurring ◽  
Silicate Layers ◽  
Mineral Identification

Experimental clay mineral-organic molecule complexes long have been known and some of them have been extensively studied by X-ray diffraction methods. The organic molecules are adsorbed onto the surfaces of the clay minerals, or intercalated between the silicate layers. Natural organo-clays also are widely recognized but generally have not been well characterized. Widely used techniques for clay mineral identification involve treatment of the sample with H2 O2 or other oxidant to destroy any associated organics. This generally simplifies and intensifies the XRD pattern of the clay residue, but helps little with the characterization of the original organoclay. Adequate techniques for the direct observation of synthetic and naturally occurring organoclays are yet to be developed.

SEM study of the morphological effects of kinetin and zeatin on the growth and development of the apical meristem in wheat

1995 ◽  
Vol 53 ◽  
pp. 978-979
Author(s):  
G. M. Hutchins ◽  
J. S. Gardner
Keyword(s):  
Growth And Development ◽  
Furfuryl Alcohol ◽  
Apical Meristem ◽  
Plant Cells ◽  
Triticum Aestivum L ◽  
Morphological Development ◽  
Naturally Occurring ◽  
Chinese Spring Wheat ◽  
Sem Study ◽  
Moist Environment

Cytokinins are plant hormones that play a large and incompletely understood role in the life-cycle of plants. The goal of this study was to determine what roles cytokinins play in the morphological development of wheat. To achieve any real success in altering the development and growth of wheat, the cytokinins must be applied directly to the apical meristem, or spike of the plant. It is in this region that the plant cells are actively undergoing mitosis. Kinetin and Zeatin were the two cytokinins chosen for this experiment. Kinetin is an artificial hormone that was originally extracted from old or heated DNA. Kinetin is easily made from the reaction of adenine and furfuryl alcohol. Zeatin is a naturally occurring hormone found in corn, wheat, and many other plants.Chinese Spring Wheat (Triticum aestivum L.) was used for this experiment. Prior to planting, the seeds were germinated in a moist environment for 72 hours.

Fine structure and properties of defects in naturally occurring silicates and oxides

1990 ◽  
Vol 48 (4) ◽  
pp. 460-461
Author(s):  
David R. Veblen
Keyword(s):  
Chemical Reactions ◽  
High Resolution Electron Microscopy ◽  
Extended Defects ◽  
Single Chain ◽  
Naturally Occurring ◽  
Resolution Electron ◽  
Fine Structures ◽  
Image Simulations ◽  
Similar Crystal Structure

Extended defects and interfaces control many processes in rock-forming minerals, from chemical reactions to rock deformation. In many cases, it is not the average structure of a defect or interface that is most important, but rather the structure of defect terminations or offsets in an interface. One of the major thrusts of high-resolution electron microscopy in the earth sciences has been to identify the role of defect fine structures in reactions and to determine the structures of such features. This paper will review studies using HREM and image simulations to determine the structures of defects in silicate and oxide minerals and present several examples of the role of defects in mineral chemical reactions. In some cases, the geological occurrence can be used to constrain the diffusional properties of defects.The simplest reactions in minerals involve exsolution (precipitation) of one mineral from another with a similar crystal structure, and pyroxenes (single-chain silicates) provide a good example. Although conventional TEM studies have led to a basic understanding of this sort of phase separation in pyroxenes via spinodal decomposition or nucleation and growth, HREM has provided a much more detailed appreciation of the processes involved.

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