blister/phosphatase

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Identification and biochemical characterization of protein phosphatase 5 from the cantharidin-producing blister beetle, Epicauta chinensis.

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Protein phosphatase 5 (PP5) is a unique member of serine/threonine phosphatases which has been recognized in regulation of diverse cellular processes. A cDNA fragment encoding PP5 (EcPP5) was cloned and characterized from the cantharidin-producing blister beetle, E. chinensis. EcPP5 contains an open

Acid hydrolases in blister fluid. I. Characterization and quantification of acid phosphatase.

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Acid phosphatase has been characterized and quantified in human suction blister fluid, interstitial fluid and serum. The acid phosphatases of suction blister fluid and serum showed differences in their pH activity curves, Michaelis-Menton constants, heat stabilities and sensitivities to inhibition

[Alkaline phosphatase and glycogen in the leukocytes found in the fluid blisters due to cantharides plaster].

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Cantharidin impedes the activity of protein serine/threonine phosphatase in Plutella xylostella.

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Cantharidin, a natural toxin produced by the blister beetle, was reported to be toxic to some pests, but the mechanism of its toxicity in insects remains undefined. We found that cantharidin exerted in vivo and in vitro inhibitory effects on protein serine/threonine phosphatases (PSPs) of Plutella

Contractility and inhibition of protein phosphatases by cantharidin.

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1. Cantharidin is a natural defensive toxicant produced by blister beetles. 2. Cantharidin shares structural similarity with highly toxic commercial herbicides (e.g., endothall, endothall anhydride and endothall thioanhydride). 3. Cantharidin inhibits the activity of purified catalytic subunits of

Further support for a role for Th2-like cytokines in blister formation of pemphigus.

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Pemphigus vulgaris and pemphigus foliaceus are commonly known as antibody-mediated bullous diseases. However, recently a role for infiltrating cells as contributors to the pathogenesis of these diseases has been suggested. The aims of our study were to characterize the immunophenotype of the

Protein phosphatase inhibitor cantharidin inhibits steroidogenesis and steroidogenic acute regulatory protein expression in cultured rat preovulatory follicles.

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The effect of cantharidin, a natural toxicant of blister beetles and a strong inhibitor of protein phosphatases types 1 and 2A, on luteinizing hormone (LH)-induced synthesis of steroidogenic acute regulatory (StAR) protein was studied in a serum-free culture of preovulatory follicles. StAR protein

Transcriptional responses to cantharidin, a protein phosphatase inhibitor, in Arabidopsis thaliana reveal the involvement of multiple signal transduction pathways.

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Cantharidin is a natural compound isolated from the blister beetle (Epicauta spp.). It is a potent inhibitor of protein serine/threonine phosphatases (PPPs), especially PP2A and PP4. Protein phosphatases and kinases maintain a sensitive balance between dephosphorylated and phosphorylated forms of

Cantharidin-binding protein: identification as protein phosphatase 2A.

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The toxic effects of cantharidin from blister beetles and its analogs, including the herbicide endothall, are attributable to their high affinity and specificity for a cantharidin-binding protein (CBP). An ammonium sulfate precipitate of mouse liver cytosol was purified by five chromatographic steps

Cantharidin, another natural toxin that inhibits the activity of serine/threonine protein phosphatases types 1 and 2A.

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Cantharidin, a natural toxicant of blister beetles, is a strong inhibitor of protein phosphatases types 1 (PP1) and 2A (PP2A). Like okadaic acid, cantharidin inhibits the activity of the purified catalytic subunit of PP2A (IC50 = 0.16 microM) at a lower concentration than that of PP1 (IC50 = 1.7

Small-molecule inhibitors of ser/thr protein phosphatases: specificity, use and common forms of abuse.

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Natural product extracts have proven to be a rich source of small molecules that potently inhibit the catalytic activity of certain PPP-family ser/thr protein phosphatases. To date, the list of inhibitors includes okadaic acid (produced by marine dinoflagelates, Prorocentrum sp. and Dinophysis sp.),

Digestion of prey in foraminifera is not anomalous: a correlation of light microscopic, cytochemical, and HVEM technics to study phagotrophy in two allogromiids.

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Correlative light, high-voltage electron and conventional electron microscopic methods were used to investigate digestion in two allogromiid foraminiferans, Allogromia sp., strain NF, and A. laticollaris Arnold. Microscopic observations showed that bacterial prey are phagocytosed by reticulopodia

A first report of porphyria cutanea tarda successfully treated with glycyrrhizin.

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Porphyria cutanea tarda (PCT) is a condition that affects liver and skin by reduction of hepatic uroporphyrinogen decarboxylase activity. It is characterized by blistering lesions, erosions and crusts on sun-exposed areas. We report a 51-year-old male presenting with recurrent episodes of bullae,

The role of T lymphocytes and cytokines in the pathogenesis of pemphigoid gestationis.

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BACKGROUND Pemphigoid gestationis (PG), also known as herpes gestationis, is a rare autoantibody-mediated bullous disease, usually associated with pregnancy and the postpartum period. However, infiltrating cells have recently been suggested to also contribute to the pathogenesis of cutaneous

Is there life in the horny layer? Dihydropyridine and ryanodine receptors in the skin of female and male chickens (Gallus domesticus).

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Previous findings in pigeons and chickens show that Ca(2+) may be accumulated inside the cornified skin cells and that Ca(2+) microenvironments with a lower- or higher-than-blood concentration may exist in the skin. It has been suggested that the skin may function as a secretory pathway or a

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