Search Results
Results 301 - 350 of 560
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Andreou V G - - 1998
This work describes a technique for the rapid and sensitive electrochemical flow injection monitoring of aflatoxin M1 (AFM1) using stabilized systems of filter-supported bilayer lipid membranes (BLMs). Injections of AFM1 were made into flowing streams of a carrier electrolyte solution, and a transient current signal with a duration of seconds ...
van het Hof K H - - 1998
OBJECTIVES: To assess the blood concentration of catechins following green or black tea ingestion and the effect of addition of milk to black tea. DESIGN: Twelve volunteers received a single dose of green tea, black tea and black tea with milk in a randomized cross-over design with one-week intervals. Blood ...
Waldner C - - 1998
Three tests are routinely done to assess blood status of selenium in cattle: serum selenium, whole blood selenium, and glutathione peroxidase. The objective of this study was to compare the various analytical methods for determining blood selenium status in groups of mature cows and beef calves. Twenty to 30 blood ...
Matteo R - - 1998
OBJECTIVE: We evaluated the effect of lipid peroxidation on the calcium adenosine triphosphatase activity of red blood cell ghosts from normotensive pregnant women and compared it with the adenosine triphosphatase activity and lipid peroxidation in preeclampsia. STUDY DESIGN: Ten nulliparous normotensive and 10 nulliparous preeclamptic pregnant women (38 to 39 ...
Manojkumar V - - 1998
BACKGROUND AND OBJECTIVES: Significant amounts of di(2-ethylhexyl) phthlate (DEHP) leach into blood stored in DEHP-plasticized PVC bags. The aim of this study was to find out whether DEHP at these low levels has any effect on the concentration of vitamin E, an antioxidant which affords protection against free radical damage. ...
Roshchupkin D I - - 1998
The data on the role of lipid peroxidation in the effects of UV irradiation of blood are reviewed. Lipid photoperoxidation in blood cells is the result of photochemical transformation of lipid hydroperoxides, both existing and newly formed ones, into free radicals and direct photolysis of photooxidants. Dark lipid autoperoxidation is ...
Bajcsy A C - - 1997
Concentrations in ionized calcium and some other blood parameters including total calcium, magnesium, inorganic phosphate, sodium, potassium, chloride, acid-base and hematological parameters of 15 German Holstein dairy cows were studied before and after surgical replacement of a left sided displaced abomasum. Mild hemoconcentration and hypochloremia were characteristic findings. These parameters ...
Geishauser T - - 1997
The objective of this study was to examine the association between blood calcium (Ca) and left displaced abomasum (LDA), and between Ca and selected anamnestic, blood and urine parameters in cows diagnosed with LDA. One hundred and forty-four cows diagnosed with LDA and 20 controls were used. The association between ...
Griese M - - 1997
During lung injury, blood constituents may leak into the alveolar space and impair surfactant function. This study investigated possible interferences with the alveolar surfactant life cycle, by assessing the effects of various blood constituents on size, state of aggregation, and uptake of a natural, lipid-extracted bovine surfactant preparation (Alveofact) into ...
Watanabe T - - 1997
We present two siblings with vitamin B6-nonresponsive homocystinuria due to a deficiency of cystathionine beta-synthase who had different levels of methionine in the blood during the neonatal period, even though they had the same genetic defect. One of them was missed in the screening of newborns for homocystinuria. Special care ...
Puchkova L V - - 1997
The content of ceruloplasmin (Cp) was determined in 96 samples of human breast milk using rocket immunoelectrophoresis and measurement of Cp oxidase activity. The concentration of immunoreactive Cp in milk decreased about 9 times during the first 20 days of lactation while the specific oxidase activity decreased only 4 times. ...
Smith J F - - 1997
This paper focuses on dairies that want to expand and milk more cows through an existing parlor or by building new parlor. The expansion process can be divided into the following three phases: 1) financial evaluation, 2) design, and 3) construction. A financial evaluation should be carried out first to ...
Blass E M - - 1997
OBJECTIVE: To determine whether milk and its components reduce crying in newborns during and after blood collection for phenylketonuria evaluation. METHODOLOGY: Seventy-two normal newborns ingested 2 mL of milk (Similac), Ross Special Formula, fat, protein, lactose, sucrose, or water for the 2 minutes preceding blood collection via heel lance. Crying ...
Bruckmaier R M - - 1997
Mammary cistern anatomy derived from ultrasound measurement, milk ejection in response to exogenous oxytocin and oxytocin release and milking characteristics with and without manual prestimulation in early (months 2-4) and late (months 5-8) lactation were investigated in Lacaune and Ostfriesian dairy ewes. Vertical ultrasound cisternal cross sections of the cisternal ...
Jung D - - 1997
The elimination of beta-hexachlorocyclohexane (beta-HCH) in humans was investigated in a group of 40 former workers of a lindane-producing plant by analyzing at least 2 blood specimens (3 specimens in 3 workers) from different time points. Assuming a first-order kinetic model for excretion, the median half-life of beta-HCH is 7.2 ...
Cestaro B - - 1997
In human ageing and with many pathologies correlated to the senile functional decay of cells, membrane damage often occurs in some organ or tissue, which provokes lipid peroxidation in the membrane and accelerates the disorder in structure and function of the membrane. When lipid peroxides accumulate sufficiently, they leak from ...
Noerpramana N P - - 1997
OBJECTIVES: Norplant has been widely used in Indonesia, though a previous study conducted in Jakarta indicates that there is a significantly high cholesterol level in acceptors. Other international studies indicate different results. Accordingly, a study on the fraction of blood lipids of Norplant acceptors was considered necessary. MATERIAL AND PROCEDURES: ...
Furuhashi M - - 1997
The aim of the present study was to reevaluate the prenatal production of specific IgE for eggs and milk and, in those cases, to determine whether there is a relation to the amount of maternal egg and milk intake. Total and specific IgEs from 160 cord blood-samples were determined by ...
Navarro J - - 1997
The effect of x-rays on GSH and GSSG levels in blood was studied in mice and humans. An HPLC method that we recently developed was applied to accurately determine GSSG levels in blood. The glutathione redox status (GSH/GSSG) decreases after irradiation. This effect is mainly due to an increase in ...
Dargatz D A - - 1996
This study was conducted to determine the geographic distribution of selenium deficiency among beef cows and heifers in selected states. Whole blood selenium concentrations were determined for cows and heifers on 253 cow-calf operations in 18 states. Overall, 7.8% of the samples were severely deficient, and another 10.4% of the ...
Vrecl M - - 1996
The transfer coefficients of tetra- and hexachlorobiphenyls (PCB-54; -80; -155; and -169), HCB and 4,4'-DDE between milk and blood were monitored for eight weeks in sheep previously administered with these compounds by intramuscular injection. Analyses were performed by high resolution gas chromatography. The milk/blood ratio on a fat basis was ...
Alegría A - - 1996
In order to assess the reference values for selenium nutritional status, adequate indicators (selenium concentration and glutathione peroxidase activity) were determined in whole blood and blood derivates of a healthy population (n = 287) from the province of Valencia, Spain. The reference population was selected by applying preestablished criteria. Selenium ...
Serra A B - - 1996
Soluble glass bolus (SGB) with selenium (Se) was administered intraruminally to Se-deficient Philippine does to determine its effect on milk Se and to correlate the Se contents of does' milk and blood of does and kids. Five months after the Se administration, the does in the treated group (n = ...
Eriksson M - - 1996
The mechanisms that regulate mammary blood flow during lactation are not fully understood. In the present study laser Doppler flowmetry (LDF) was used to measure blood flow in the cutaneous microvessels of the mammary gland of lactating rats. The effects of suckling on blood flow were examined, as were those ...
Chen H W - - 1996
OBJECTIVE: In this work, we have measured the plasma vitamins A and E and red blood cell fatty acid profile in newborns and their mothers and have determined whether there are any relationships between maternal blood and cord blood for the nutrients measured. SETTING: The study was performed at the ...
Richie J P JP - - 1996
Glutathione (GSH) availability is an important factor in the maintenance of health. Accordingly, blood GSH has been proposed as an indicator of health status. To validate the use of blood GSH in population studies, we investigated the long-term intraindividual variation of blood GSH and cyst(e)ine (Cys and cystine) concentrations in ...
Trewick A L - - 1996
Xanthine oxidase activity in blood from the ipsilateral femoral vein, and the relationship between xanthine oxidase production and the products of lipid peroxidation, were studied before operation and for 60 min following release of clamps after successful revascularization in two groups of patients with claudication or critical ischaemia. Before revascularization, ...
Bruckmaier R M - - 1996
The effects of manual teat stimulation compared with stimulation by the liner of a conventional milking machine and the influence of milk ejection on the course of milk flow during the entire milking were investigated. Twelve cows were milked with or without prestimulation on three quarters and milk flow was ...
Oskarsson A - - 1996
Total mercury concentrations (mean +/- standard deviation) in breast milk, blood, and hair samples collected 6 wk after delivery from 30 women who lived in the north of Sweden were 0.6 +/- 0.4 ng/g (3.0 +/- 2.0 nmol/kg), 2.3 +/- 1.0 ng/g (11.5 +/- 5.0 nmol/kg), and 0.28 +/- 0.16 ...
Hamann J - - 1996
Pulsation rates of 40, 60 and 80 cycles/min were combined with pulsator ratios of 50, 60, 70 or 80 percent in two experiments with different liners. Machine-induced, short-term changes in teat thickness of 14 cows were compared with milk flow rate characteristics and machine strip yields to evaluate the effectiveness ...
O'Callaghan E J - - 1996
Liner slip or rapid air leakage past the mouthpiece of the milking machine liner is related to high rates of new cases of mastitis. A real time technique was developed to monitor the air flow into the milking machine cluster during liner slips as well as to monitor milking time ...
Dubrey S W - - 1996
The fibrils in AL and AA amyloidosis, although similar in appearance, have different biochemical composition and staining characteristics. Whereas electrocardiographic and echocardiographic features of heart involvement in AA amyloidosis resemble those for AL amyloidosis, our findings support the concept that the constituent amyloid fibrils may play a decisive role in ...
Thomson C D - - 1996
OBJECTIVE: The aim of this paper was to compile all the studies of selenium status carried out in Otago and in other areas of New Zealand in order to follow the history of selenium status in New Zealand residents over the last 20 years. DESIGN: Since 1970 baseline blood samples ...
Popov I N - - 1996
A new method for quantification of antiradical properties of pure lipid-soluble antioxidants and for measurement of integral antioxidant capacity in the lipid phase (ACL) of polycomponent systems, such as blood plasma or tissue homogenates, is developed. It is based on an antioxidant-sensitive inhibition of a photo-induced, chemiluminescence accompanied autoxidation of ...
Payne D L - - 1996
Optimum concentration of Cr for infant formulas has not been established. Such components as soy protein or supplemental Fe could influence absorption and retention. Suckling rat pups were used to evaluate the influence of three commercial formulas and human milk, all of which had been incubated with 51CrCl3 for 1 ...
Richie J P JP - - 1996
Little is known about the variability of blood glutathione (GSH) in human subjects. Thus, we wanted to develop and validate a rapid method for measuring GSH concentrations in whole blood and apply this method to ascertain the variation of GSH in a large-scale study of free-living adults. The assay was ...
Atroshi F - - 1996
The following blood constituents were measured in the blood and/or serum from healthy and mastitic cows: lipid peroxides (LPO), alkaline phosphatase (AP), lactate dehydrogenase (LDH), urea, glutathione peroxidase (GSH-Px), prostaglandin E2 (PGE2), cyclic AMP (cAMP), electrolytes (Na, K), white blood cells (WBC), haemoglobin (Hb), haematocrit, eosinophils, and electrical conductivity. The ...
Murakami T - - 1995
1. To determine biochemically the incipient timing of cerebral stroke in stroke-prone spontaneously hypertensive rats (SHRSP) the relation between the glutathione peroxidase (GSH-Px) activity in erythrocytes and the extent of stroke lesion was investigated. 2. When the blood pressure of SHRSP was maintained over 250 mmHg, the GSH-Px activity was ...
Pfeilsticker H U - - 1995
Experiments were designed to test the hypothesis that milk ejection rate decreases during milking, thereby causing insufficient refill of the cistern and decreasing milk flow rate towards the end of milking. In a first series of experiments machine milking of the left front quarters of 11 cows was interrupted for ...
Guan Y - - 1995
The Yishoujiangzhi (de-blood-lipid) tablets (composed of Radix Polygori Multiflori, Rhizoma Polygonati, Fructus Lycii, Crataegus Pinnatifida and Cassia Tora) were used in the treatment of 130 cases of hyperlipemia, achieving an effective rate of 87.0% in lowering serum cholesterol and 80.8% in lowering triglyceride.
Gaudichon C - - 1995
Milk and yoghurt proteins were 15N-labelled in order to measure the flow rate of exogenous N during digestion in the human intestine. After fasting overnight, sixteen healthy volunteers, each with a naso-jejunal tube, ingested either [15N]milk (n 7) or [15N]yoghurt (n 9). Jejunal samples were collected every 20 min for ...
Murakami T - - 1995
The incipient timing of cerebral strokes in the stroke-prone spontaneously hypertensive rats (SHRSP) was biochemically determined by investigating the relationship between the glutathione peroxidase (GSH-Px) activity in erythrocytes and the extent of stroke lesions. When the blood pressure of SHRSPs was maintained at over 240 mmHg, the GSH-Px activity fell, ...
Cant J P - - 1995
A dynamic mathematical model of blood flow regulation in the mammary glands of a lactating cow was constructed from a principle of local vasodilator release in response to changes in intracellular adenylate charge. An equation was derived to predict uptake of the milk precursors acetate, glucose, amino acids and fatty ...
Cachia O - - 1995
OBJECTIVE: The purpose was to establish which blood characteristic of vitamin E status were highly correlated between mothers and fetuses during gestation. STUDY DESIGN: Twenty-four pregnant women were selected because of suspicion of toxoplasmosis or other disease and malformation or intrauterine growth delay justifying cord blood puncture. After maternal and ...
Teramoto S - - 1995
The oxidant-antioxidant imbalance in the lower respiratory tract plays a major role in the pathogenesis in idiopathic pulmonary fibrosis (IPF). However, the systemic oxidant-antioxidant balance in the patients with IPF has not been extensively evaluated. In this study, the metabolism of glutathione (GSH) and superoxide anion production of whole blood ...
Malbe M - - 1995
The dairy cows at the Estonian Agricultural University appeared to have an extremely low selenium status. The selenium level was 5.6 micrograms/l in whole blood and 3.2 micrograms/l in milk, on average. The blood glutathione peroxidase was consequently extremely low. The effects of organic selenium (selenized yeast) and sodium selenite ...
Oskarsson A - - 1995
Breast milk is the ideal nutrient for the newborn, but unfortunately also a route of excretion for some toxic substances. Very little attention has been paid to breast milk as a source of exposure to toxic elements. The dose-dependent excretion is breast milk and the uptake in the neonate of ...
Fernández-Garayzábal J F - - 1995
16S rRNA gene sequencing studies were performed on some Gram-positive coryneform bacteria of unknown taxonomic position isolated from blood and milk of healthy cows. Comparative sequence analysis demonstrated that the milk isolates corresponded to Oerskovia xanthineolytica whereas those from blood consisted of two distinct, albeit highly related species, within the ...
Starkopf J - - 1995
Oxidative stress and subsequent lipid peroxidation have been suggested as pathogenetically important for postischaemic reperfusion injury. We studied the time-course of oxidative stress in 14 adults undergoing cardiac surgery, evaluating serum levels of lipid peroxidation products--diene conjugates (DC) and basal and Fe-stimulated thiobarbituric acid reactive substances (TBARS, FeTEBARS)--as well as ...
Negru T - - 1995
Changes of the redox balance are reflected at the blood level in old agers--chronically intoxicated with alcohol--presenting degenerative psycho-organic syndromes (DPOS). The parameters investigated were lipid peroxidation reduced glutathione and the total SH groups. The changes of the antioxidant enzymatic system expressed by the activity of superoxide dysmutase, of glutathione ...
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