phytohaemagglutinin/phaseolus

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Direct anthelmintic and immunostimulatory effects of oral dosing semi-purified phytohaemagglutinin lectin in sheep infected with Teladorsagia circumcincta and Trichostrongylus colubriformis.

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Lectins are plant secondary compounds that can have anthelmintic properties in vitro. In particular, the phytohaemagglutinin lectin extracted from Phaseolus vulgaris has been shown to inhibit the feeding of Trichostrongylus colubriformis and Teladorsagia circumcincta L1 larvae. However, little is

The effect of phytohaemagglutinin at different dietary concentrations on the growth, body composition and plasma insulin of the rat.

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Young growing rats weighing approximately 83 g were fed on diets containing kidney bean (Phaseolus vulgaris) lectin (phytohaemagglutinin, PHA) in the range of 0-0.45 g/kg body weight for 10 d to ascertain whether there was a minimum dose below which the lectin had no significant effect on body and

Effect of phytohaemagglutinin on intestinal cell proliferation. Role of polyamines.

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The polyamines, putrescine, spermidine and spermine, mediate the effects of hormones and growth factors as second messengers. They are necessary for every step of protein, RNA and DNA synthesis and are therefore essential for cell growth and proliferation. As with hormones and peptide growth

The sheep erythrocyte receptor and both alpha and beta chains of the human T-lymphocyte antigen receptor bind the mitogenic lectin (phytohaemagglutinin) from Phaseolus vulgaris.

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We have studied the interaction of mitogenic lectins such as phytohaemagglutinin (PHA) and concanavalin A (Con A) with both surface molecules which, by the use of monoclonal antibodies, are known to trigger T-cell mitogenesis. Monoclonal antibodies recognizing the T-lymphocyte receptor for antigen

Characterization of Ca2+ and K+ currents in the human Jurkat T cell line: effects of phytohaemagglutinin.

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1. Inward and outward currents were recorded in the human Jurkat T cell line using the whole-cell configuration of the patch-clamp technique. 2. The transient outward current was activated at membrane potentials positive to -60 mV. The activation time constant-voltage relationship decreased from 17

Recognition at cell surfaces: phytohaemagglutinin-lymphocyte interaction.

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Many aspects of cell behaviour are regulated by the interaction of extracellular ligands with specific receptors exposed on the cell surface. The receptors correspond to membrane proteins and expecially glycoproteins. A key event in regulation is the transmission across the surface membrane of the

Three-peaked chemiluminescent response of human peripheral blood leukocytes following stimulation with phytohaemagglutinin (PHA).

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Luminol-enhanced chemiluminescence (CL) was used to examine the response of various leukocyte populations following stimulation with a crude extract of Phaseolus vulgaris, namely phytohaemagglutinin (PHA-C). Populations stimulated included a human peripheral mixed leukocyte preparation (MLP), and

The induction of gut hyperplasia by phytohaemagglutinin in the diet and limitation of tumour growth.

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The growth of a transplantable murine non-Hodgkin lymphoma tumour, developing either intraperitoneally as an ascites tumour or subcutaneously as a solid tumour, has been shown to be markedly diminished by including phytohaemagglutinin (PHA), a lectin present in raw kidney bean (Phaseolus vulgaris)

Origin and mediation of secretion induced by oral phytohaemagglutinin (PHA) in rats.

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After oral administration several gut-binding lectins induce accumulation of liquor and amylase in the proximal small intestine. Orally administered Phaseolus vulgaris phytohaemagglutinin (PHA) was used to study the mediation of these effects in rats. The regulation of amylase secretion clearly

Phaseolus vulgaris phytohaemagglutinin (PHA) binds to the human T lymphocyte antigen receptor.

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The interaction of phytohaemagglutinin (PHA) with the human T lymphocyte antigen receptor (Ti) was explored. Nonidet-P40 lysates of surface-labelled HPB-ALL cells were immunoprecipitated with PHA, using a rabbit anti-(PHA)-serum, as well as clonotypic monoclonal antibodies (H1-2D4 and T40/25) and a

The growth of an established murine non-Hodgkin lymphoma tumour is limited by switching to a phytohaemagglutinin-containing diet.

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The growth of a non-Hodgkin lymphoma, developing subcutaneously as a solid tumour in NMRI mice, is markedly diminished by including phytohaemagglutinin (PHA), a lectin present in raw kidney bean (Phaseolus vulgaris), in the diet. In the experiment described in this communication the effect of first

A comparative study of phytohaemagglutinin and extract of Phaseolus vulgaris seeds by characterization and cytogenetics.

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Phytohaemagglutinin (PHA) is a lectin obtained from Phaseolus vulgaris (red kidney beans), that acts as a mitogen in human leucocyte culture and is commercially available from Gibco. This PHA (Gibco) was found to be very expensive, hence other inexpensive sources that can be used in all kinds of

Luminal and basolateral polyamine uptake by rat small intestine stimulated to grow by Phaseolus vulgaris lectin phytohaemagglutinin in vivo.

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Luminal and basolateral uptake of polyamines by the rat small intestine was studied in vivo. In the concentration range studied (0.1-5 mg per rat) 23-47% of the individual polyamines given intragastrically were found in the body after 1 h, with the small intestine retaining 4-12% of the dose. With

THE INTERRELATIONS OF ERYTHROAGGLUTINATING, LEUCOAGGLUTINATING AND LEUCOCYTE-MITOGENIC ACTIVITIES IN PHASEOLUS VULGARIS PHYTOHAEMAGGLUTININ.

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Separation of lymphocyte-stimulating and agglutinating activities in phytohaemagglutinin (PHA) from Phaseolus vulgaris.

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