Search Results
Results 401 - 450 of 560
< 2 3 4 5 6 7 8 9 10 11 12 >
Beers K - - 1990
The effect of glutathione (GSH) depletion on mean celiac blood flow (MCBF) was determined in domestic fowl. Diethyl maleate (DEM, 1 mL/kg body wt) decreased hepatic and duodenal GSH to approximately 15% of control. This GSH depletion was associated with an increase in MCBF and decreases in mean arterial blood ...
Robinson P H - - 1990
Two dairy cows fitted with rumen cannulas and closed T-shaped duodenal cannulas were utilized to examine duodenal cannula function and indigestible marker performance. Cows were fed one of two mixed diets and hay separately twice daily. Diets contained sources of supplemental protein that differed in expected rate of ruminal degradation. ...
Müller K - - 1990
Recent studies have suggested that vitamin D3 may have an immunoregulatory role in vitro. The vitamin D3 metabolism in 35 patients with primary Sjögren's syndrome was investigated by measuring blood concentrations of 1 alpha,25-dihydroxyvitamin D3 (1 alpha,25-(OH)2D3) and 25-hydroxyvitamin D3 (25-OHD3), as well as phenotypes and blood concentrations of Gc ...
Rath M - - 1990
The concept that lipoprotein(a) [Lp(a)] is a surrogate for ascorbate is suggested by the fact that this lipoprotein is found generally in the blood of primates and the guinea pig, which have lost the ability to synthesize ascorbate, but only rarely in the blood of other animals. Properties of Lp(a) ...
Veillon C - - 1990
A stable (nonradioactive) isotope of selenium in a chemical form common in foods (selenomethionine) or inorganic selenite was taken orally (200 micrograms/d) for 3 wk to label deep body pools. By deep body pools we mean selenium compartments that are large and/or have a slow turnover (exchange) rate. Blood plasma ...
Carmel D K - - 1990
We surveyed the whole blood selenium status of a randomly sampled population of horses from 4 contiguous counties in northern Maryland. Two hundred and two horses from 74 farms were sampled. Whole blood selenium levels greater than or equal to 0.100 parts per million (ppm) were considered adequate; blood levels ...
Browne T R - - 1990
A thorough understanding of the pharmacologic properties of lipid-soluble drugs is essential when using these agents to treat status epilepticus. In addition to physiologic factors, such as blood pressure and cerebral blood flow, pharmacokinetic principles, including half-life, distribution, elimination, and volume of distribution (with special regard to an agent's lipid-solubility ...
Tyler C R - - 1990
This study provides quantitative data on the dynamics of protein sequestration into vitellogenic follicles of the rainbow trout, Salmo gairdneri. The ovarian uptake of both radiolabelled vitellogenin (VTG) and bovine serum albumin (BSA) were investigated in a homogenous population of maturing vitellogenic females.Ten fish were injected with (3)H. VTG directly ...
Johnstone A C - - 1990
The gross and histological features of congenital lipoprotein lipase deficiency are described in eight cats. The main histological features could be directly related to the presence of the chylomicronaemia. They consisted of lipid accumulation within clear vacuoles or ceroid accumulation within residual bodies in parenchymatous organs such as the liver, ...
Mathew O P - - 1990
The aim of the present study was to elucidate the role of hole size and thickness in determining milk flow through nipple units during bottle feeding. Commonly used standard nipple units (SMA single-hole, Enfamil single-hole, and Twist-on) for term and preterm infants, as well as Nuk-type nipple units (SMA Nuk, ...
Lough D S - - 1990
Six midlactation Holstein cows were exposed to treatments of thermal comfort environments with ad libitum or restricted (70% of ad libitum) DM intake and a thermal stress environment with ad libitum intake in two balanced 3 X 3 Latin squares to evaluate effects on mammary blood flow and other physiological ...
Mills B J - - 1990
The accurate assessment of glutathione status of blood is essential for its use as an index of health and aging. A major variable in glutathione analysis is sample processing, and identification of optimal standard conditions is needed. Thus our objective was to evaluate several methods to determine which one yields ...
Flatt A - - 1990
Selenium is an essential component of glutathione peroxidase, an enzyme that helps protect cells against oxidation damage and modulates the lipoxygenase pathway of arachidonic acid metabolism. Low selenium concentrations might therefore influence the inflammatory process in asthma by reducing the activity of glutathione peroxidase. Whole blood and plasma selenium concentrations ...
Nielsen M O - - 1990
1. Mammary blood flow was measured during the lactation period in two low- and two high-yielding dairy goats (peak milk yields approx. 1.5 and 3.6 kg/day respectively), using the ultrasound Doppler principle for determination of blood velocity in both milk veins (subcutaneous abdominal veins) of the animals, and ultrasound scanning ...
Hamliri A - - 1990
In order to evaluate the selenium status of sheep in the major raising areas of Morocco, blood selenium concentration, erythrocyte glutathione peroxidase activity and feed selenium levels were determined. A total of 843 blood samples from sheep and 118 feed samples were analyzed. Results showed that 73% of sheep sampled ...
Roets E - - 1989
Milking characteristics were measured on 14 cows at morning milkings. After collection of blood, cows were slaughtered and teats were removed. beta 2-Adrenoceptors on teat tissue and lymphocyte membranes were identified by binding of [3H]dihydroalprenolol. For the determination of alpha 2-adrenoceptors on teat tissue and blood platelet membranes, [3H]rauwolscine was ...
Nickerson S C - - 1989
The in vivo effects of recombinant human granulocyte colony-stimulating factor on blood and milk leukocytes in dairy cows was examined. A 2-fold increase in peripheral white blood cell counts was observed by d 5 of treatment and peaked on d 12 with values 3-fold those of controls. Counts remained elevated ...
Hattingh J - - 1989
Blood was obtained over a period of 20 minutes by remote controlled procedures from cattle while they were herded. Samples were analysed for catecholamines, cortisol, haematocrit, total lipid, glucose and lactate. The results show that the response to a given stressor is specific and suggest that multiple stressors may not ...
Stone J - - 1989
1. Selenium is an essential component of glutathione peroxidase (GSH-Px, EC 1.11.1.9), an enzyme which helps protects cells against damage caused by free radicals and hydroperoxides. 2. We report the plasma, whole blood and platelet concentrations of selenium, and whole blood and platelet activities of GSH-Px, in 49 patients with ...
Braun U - - 1989
A biochemical examination was made of the blood and rumen fluid of 111 heifers and cows suffering from caecal dilatation, with or without torsion. Haematological values were normal in the majority of cattle. Concentrations of chloride were normal in the rumen fluid of 83 per cent of the animals and ...
Dollin A E - - 1989
Meiotic chromosome pairing abnormalities in full-blood and hybrid Bos taurus and B. indicus cattle have been surveyed by electron microscopy of pachytene synaptonemal complex spreads. In this paper the full-blood spreads are described in detail, including the use of XY and nucleolar morphology and other measured parameters for pachytene substaging. ...
el-Ayoty S A - - 1989
An attempt was made to study the effect of the presence of "El-Nasr" Fertilizer Plant in "Talkha" on the nitrate content of berseem as well as on some blood and milk constituents of buffaloes raised in the surrounding areas of the factory. The studied areas included the northern area (0-2 ...
Tsin A T - - 1989
Two groups of goldfish (Carassius auratus) were subjected to light and temperature conditions known to promote a contrast in their scotopic visual pigment compositions. After 3 weeks, the porphyropsin/rhodopsin ratio in the neuroretina of these goldfish ranged from 99% porphyropsin in one group to 59% in the other. Samples of ...
Thompson W G - - 1989
The sensitivities and specificities of the mean cell volume (MCV), the red cell distribution width (RDW), and blood smear hypersegmentation for B12 deficiency were reviewed in 515 patients whose B12 levels were determined. 61 patients had B12 levels less than 200 pg/ml. 43 patients were defined as B12 deficient (n ...
Dill S G - - 1989
Serum vitamin E and blood glutathione peroxidase values were determined in 40 horses with a histologically confirmed diagnosis of degenerative myeloencephalopathy and in 49 age-matched control horses with normal neurologic function. Significant differences were not detected in serum vitamin E or blood glutathione peroxidase values between horses affected with degenerative ...
Kincaid R L - - 1989
Selenium status of dam, injected Se, and dietary Ca on calf blood Se concentrations were determined in two trials. Blood was collected from heifer calf and dam pairs at parturition. Half of the calves were injected intramuscularly with .0825 mg Se/kg body weight at birth while the other half received ...
Koskinen P - - 1988
To assess the effects of angiotensin-converting enzyme inhibition with quinapril on blood lipid profile, serum total cholesterol and triglycerides, together with high-density and low-density lipoprotein cholesterol were analysed in 23 hypertensive patients receiving either placebo (7 patients) or quinapril hydrochloride (16 patients). After 12 weeks of therapy there were no ...
Sieradzan R R - - 1988
The effects of cefoxitin and cefotetan on vitamin K metabolism and clotting parameters in five healthy subjects were investigated. No changes in prothrombin time or in the formation of abnormal prothrombin were seen either during or following the cefoxitin or cefotetan phase. However, when phytonadione (10 mg) (vitamin K1) was ...
Pyykkö K - - 1988
Concentrations of selenium in the soil are very low in most regions in Finland, which explains the low selenium contents of agricultural plants and the low dietary intake of selenium. The poor selenium status of the population in Finland has been considered a possible risk to public health. In 1984, ...
Garry F - - 1988
Physical and clinicopathologic findings from six cows with proximal duodenal obstruction (PDO) and 58 cows with abomasal volvulus (AV) were compared retrospectively. Many of the physical signs were similar in cows with PDO and cows with AV, but the two conditions differed in the type of abdominal distention, and in ...
Schramel P - - 1988
The concentrations of the essential trace elements Cu, Fe, and Zn, and of the mineral elements Ca, K, Mg, and P during the perinatal period in human placenta and in the blood of the mother and the newborn (cord blood) were determined. Breast milk (colostrum and transitory milk) was also ...
Giertsen J C - - 1988
Four divers in a compression chamber system were suddenly decompressed from 9 atm to 1 atm. One of the divers was about to close the door between the chamber system and the trunk when the accident happened. He was shot out through the door and severely mutilated. The three others ...
Donnelly C W - - 1988
This paper describes the application of flow cytometry to the analysis of milk for the presence of Listeria monocytogenes. A total of 939 raw milk samples from 54 farms were analyzed for the presence of L. monocytogenes by cold enrichment vs flow cytometry, which incorporated a selective enrichment step. Analyzed ...
Vernie L N - - 1988
Haematocrit and glutathione peroxidase activity in blood, as well as selenium levels in blood, erythrocytes and plasma, were determined in 15 patients during four courses of cisplatin combination treatment for testicular teratoma. The haematocrit steadily declined, necessitating frequent blood transfusions during or after treatment. For patients without blood transfusions during ...
Hammer R A - - 1988
This study was performed to determine whether the level of neurotensin in mesenteric venous blood after lipid perfusion is sufficient to establish neurotensin as a mediator of lipid-induced mesenteric vasodilation. In anesthetized dogs, arterial flow to segments of the ileum was recorded, and blood was collected for measurement of neurotensin-like ...
McFadden T B - - 1988
Intramammary leucocytosis was induced by injection of Escherichia coli endotoxin via the teat canal in three lactating Holstein cows. Concentrations of alpha-lactalbumin and casein in blood serum were measured, and somatic cell concentration and yield and composition of milk were determined. Endotoxin injection elicited mean increases of 100-fold in somatic ...
Valentine J L - - 1988
Four communities with water supplies having selenium concentrations of less than 3.1, 1.7, 189, and 496 micrograms/liter were selected for study. Samples of blood, urine, and tap water were obtained from participants in each community and analyzed for selenium content. Blood samples were also analyzed for glutathione peroxidase activity. Results ...
Kopeć-Szlezak J - - 1988
Vitamins E and C were used for the enrichment of the fluid for blood preservation. Whole blood with added ACD solution and vitamins E and C was stored at 4 degrees C for 21 days. The performed determinations included: haematocrit, osmotic fragility of the erythrocytes, ATP and 2,3-DPG content in ...
Oster O - - 1988
The serum selenium and the whole blood selenium of 72 healthy persons (47 women, 25 men) was determined. There exist sex specific differences of the whole blood selenium between men (98 +/- 19 micrograms Se/L) and women (89 +/- 17 micrograms Se/L). The serum selenium did not show sex specific ...
McDowell G H - - 1988
Exogenous bovine growth hormone at a dose of 0.1 mg kg-1 liveweight increased yields of milk and milk constituents and milk fat content when injected over 5 days into ewes in mid-lactation. These changes in milk production were associated with changes in the supply to, and utilization of, nutrients by ...
Phillippo M - - 1987
The occurrence and incidence of pneumonia in housed calves were not related to the selenium status of the herd as measured by blood glutathione peroxidase activity nor were they affected by selenium treatment of calves during the neonatal period. Pneumonia was related more closely to herd size and building design.
Zuccato E - - 1987
The breakdown of the carbohydrates by the colonic bacterial flora can cause intestinal symptoms, such as meteorism, abdominal pain and diarrhoea. The ability of human bacterial flora to break down the DEAE-dextran, a new lipid lowering resin, similar to cholestyramine, was investigated in man. Colonic bacterial flora did not appear ...
Berning L M - - 1987
Six midlactation, nonpregnant cows were subjected to heat-induced stress or to repeated injections of adrenocorticotropic hormone (ACTH). The heat stress (experiment 1) consisted of subjecting the cows to 7 days of fluctuating temperatures (21 C during the day, 32 C during the night). The ACTH-induced stress (experiment 2) was accomplished ...
Erskine R J - - 1987
Two groups of dairy herds (16 herds/group) were studied to determine the relationship between the prevalence of mastitis in a herd and mean herd blood concentrations of vitamins A and E, beta-carotene, and selenium (Se). One group had a Dairy Herd Improvement Association 12-month mean herd somatic cell count (SCC) ...
Henry E T - - 1987
Bovine leukemia virus (BLV) was transmitted by rectal inoculation of BLV-infective whole blood into cattle and sheep. Two cows and 2 sheep each were given 500 ml and 50 ml of blood, respectively, by rectal infusion. Two sheep which served as positive controls each were given 1 ml of the ...
Dewes H F - - 1987
A case of selenium poisoning was suspected following the administration of 325 micromol selenium a day as sodium selenate (25 mg Se) for five consecutive days. The main signs were confined to changes in the integument which were loss of hair from the mane and tail, disintegration of the skin ...
Radisch B - - 1987
Cadmium concentrations were measured by flameless atomic absorption spectrometry in blood and mature milk of 15 nonsmoking and 56 smoking mothers during the nursing period. Both blood and milk concentrations increased with increasing cigarette consumption. The median blood and milk concentrations in nonsmokers were 0.54 and 0.07 microgram/l, respectively; these ...
LaVoie E J - - 1987
The extent to which some of the more prevalent and potent carcinogens in cigarette smoke could be transferred from circulating blood into the milk of lactating rats was determined. One hour after i.v. administration of benzo[a]pyrene (BaP), N'-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) to the dams, the levels of these carcinogens ...
Kubota K - - 1987
A unique case of pernicious anemia is described. Initially, the percentage of OKT8-positive blood cells was markedly decreased, resulting in an increase in the OKT4/OKT8 ratio. The level of OKT8-positive blood cells was, however, returned to normal after vitamin B12 therapy. The finding may propose a possible role of the ...
Krause H J - - 1987
We have investigated the blood clearance kinetics and tissue distribution of large multilamellar liposomes (MLVs) and small unilamellar liposomes (SUVs) composed of the photopolymerizable lipid bis[12-(methacryloyloxy)dodecanoyl]-L-alpha-phosphatidylcholine. Polymerized MLVs or SUVs are cleared from the bloodstream more rapidly than nonpolymerized vesicles with similar size profiles. Both polymerized and nonpolymerized vesicles primarily ...
< 2 3 4 5 6 7 8 9 10 11 12 >