Blood Biochemistry (blood + biochemistry)

Distribution by Scientific Domains

Selected Abstracts

A study of gross, histological and blood biochemical changes in rainbow trout, Oncorhynchus mykiss (Walbaum), with rainbow trout gastroenteritis (RTGE)

J Del-Pozo
Abstract The mechanisms behind the pathogenesis of rainbow trout gastroenteritis (RTGE) are still unknown. This study examined the macroscopic and microscopic changes in trout with RTGE (RTGE+), as well as the blood chemistry. A total of 464 rainbow trout were sampled from 11 sites in the UK, comprising 152 RTGE+ fish and 330 random, apparently healthy fish. A case definition for RTGE was assessed by the analysis of its agreement with three laboratory tests: histopathology, packed cell volume and kidney bacteriology. Cluster analysis indicated the presence of three distinct presentations within the population of RTGE+ fish. Cluster A included gross signs associated with moribund RTGE+ fish, and clusters B and C identified gross signs consistent with concurrent diseases, notably furunculosis, enteric redmouth and proliferative kidney disease. The information gained was used to select RTGE+ fish without concurrent disease for the analysis of RTGE pathogenesis with blood biochemistry. This analysis revealed a severe osmotic imbalance and a reduced albumin/globulin ratio as indicatives of selective loss of albumin. These findings are compatible with a protein losing enteropathy. [source]

Hematology and blood biochemistry in infant baboons (Papio hamadryas)

L.M. Havill
Abstract: Although published normative reference standards for hematologic and clinical chemistry measures are available for adult baboons, their applicability to infants has not been addressed. We analyzed these measures in 110 infant baboons (55 females and 55 males) from a large breeding colony at the Southwest Regional Primate Research Center in San Antonio, Texas. The sample consists of olive baboons and olive/yellow baboon hybrids, 1 week to 12 months of age. We produced cross-sectional reference values and examined the effects of age, sex, and subspecies on these variables. Hematology reference ranges for infant baboons are similar to, but wider than, those for adults. Reference ranges for blood biochemistry measures are generally more dissimilar to adults, indicating that for many variables, reference ranges for adult baboons are not adequate for infants. Although sex and subspecies differences are rare, age accounts for more than 10% of the variance in many of the variables. [source]

Computer-Assisted Magnetic Resonance Imaging Brain Morphometry in American Staffordshire Terriers with Cerebellar Cortical Degeneration

D. Henke
Background: Cerebellar cortical degeneration exists in American Staffordshire Terriers. Magnetic resonance imaging (MRI) can be suggestive, but a definitive diagnosis requires histopathology. Hypothesis: Computer-assisted MRI morphometry can be used to distinguish between American Staffordshire Terriers with or without cerebellar cortical degeneration. Animals: Normal American Staffordshire Terriers (n = 17) and those with clinical signs of cerebellar cortical degeneration (n = 14). Methods: This was a partly retrospective and partly prospective study. Causes of cerebellar disease were ruled out with brain MRI, cerebrospinal fluid (CSF) analysis, CBC, blood biochemistry, and clinical follow-up. On T2-weighted midsagittal MR images, the following parameters were calculated: size of the cerebellum relative to the entire brain, size of the CSF space surrounding the cerebellum relative to the cerebellum, and 2 threshold-dependent cerebellar CSF indices (with and without surrounding CSF). Results: Statistical analyses indicated a significantly lower relative cerebellar size (P < .001) and a larger relative cerebellar CSF space (P < .001) in dogs with cerebellar cortical degeneration. The measurement of relative cerebellar size could distinguish between affected and nonaffected dogs with a sensitivity and a specificity of 93 and 94%, respectively, using a cut-off of 13.3%. Using a cut-off of 12.8%, the measurement of relative CSF space could distinguish between both groups with a sensitivity of 93% and a specificity of 100%. There was a significant difference in 1 of the 2 CSF indices between affected and normal dogs. Conclusions and Clinical Importance: Relative cerebellar size and relative CSF space calculated from MRI are effective in American Staffordshire Terriers to differentiate between normal animals and those with cerebellar cortical degeneration. [source]

Effects of Nigella orientalis and N. segetalis fixed oils on blood biochemistry in rats

G. Kökdil
Abstract Nigella orientalis and N. segetalis fixed oils were administered orally (1 mL/kg/day) to Wistar Kyoto rats for 4 weeks. The effects of the oils on biochemical parameters were compared with a control group that received distilled water under identical conditions. LDL-cholesterol level was decreased significantly in both oil groups while serum total cholesterol and VLDL-cholesterol were decreased significantly following administration of only N. orientalis fixed oil when compared with the control group. The HDL-cholesterol levels were increased significantly in both oil groups. N. orientalis fixed oil significantly reduced Aspartateaminotransferase (AST), Alkaline Phosphatase (ALP), bilirubin and urea levels in rats. There was an increase in the albumin, uric acid and mean corpuscular volume (MCV) concentrations, while the mean corpuscular hemoglobin concentration (MCHC) and RDW (red cell distribution width) levels decreased significantly. In N. segetalis fixed oil treated rats, the levels of ALP, Blood Urea Nitrogen (BUN), MCHC, RDW were decreased significantly, whereas a significant increase was found in albumin, fibrinogen, Hematocrit (HCT) and MCV levels. The effects of 4 weeks oral intake of N. orientalis and N. segetalis fixed oils on blood malondialdehyde (MDA) and total antioxidant status (TOS) were also investigated in rats. The study showed that the oils had no significant effect on MDA production. N. orientalis and N. segetalis fixed oils caused a significant increase in the total antioxidant status in rats. Copyright © 2006 John Wiley & Sons, Ltd. [source]

Haematological and biochemical characteristics of two aquacultured carnivorous cyprinids, topmouth culter Culter alburnus (Basilewsky) and yellowcheek carp Elopichthys bambusa (Richardson)

Xiaojuan Cao
Abstract The haematological and biochemical characteristics of two healthy farmed cyprinids, the topmouth culter Culter alburnus and yellowcheek carp Elopichthys bambusa, were investigated in this study. Erythrocytes, thrombocytes, lymphocytes, monocytes and granulocytes (i.e. neutrophils and eosinophils) were observed in these two fish. Every type of these cells (excluding the erythrocyte and lymphocyte) showed similar sizes in the topmouth culter and yellowcheek carp. Thrombocytes and neutrophils were the two most abundant leucocytes in the topmouth culter while thrombocytes and lymphocytes were the two most frequent leucocytes observed in the yellowcheek carp. The erythrocyte counts, haemoglobin concentrations and values of serum glucose in these two fish were high. There were significant differences in the leucocyte counts, haemoglobin concentrations, mean cellular haemoglobin contents, mean cell haemoglobin concentrations and values of serum glucose, triglyceride, total bilirubin, alkaline phosphatase and chlorine between the topmouth culter and the yellowcheek carp. The information of haematology and blood biochemistry obtained here would be useful for the prevention and diagnosis of diseases of farmed topmouth culter and yellowcheek carp. [source]