okadaic acid/blödning

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Role of RhoA in regulating the pump function of isolated lymphatics from hemorrhagic shock rats.

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The aim of this present study was to examine changes in RhoA protein levels and the role in RhoA in lymphatic contractility and reactivity after hemorrhagic shock. Levels of RhoA and phospho-RhoA in lymphatic tissue isolated from hemorrhagic shock rats were measured, and the contractility and

The presence of an extractable substance in the CSF of humans with cerebral vasospasm after subarachnoid haemorrhage that correlates with phosphatase inhibition.

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The cellular events leading to cerebral vasospasm after subarachnoid haemorrhage are poorly understood, although an increase in smooth muscle myosin light chain phosphorylation has been observed. This study set out to determine if phosphatase inhibition may be involved in the pathological

Investigation of the distribution and excretion of okadaic acid in mice using immunostaining method.

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This paper describes the distribution and excretion of okadaic acid (OA) administered orally to mice and examined by immunostaining method. Five min after administration, OA was systemically distributed, being detected in the lung, liver, heart, kidney, and small and large intestine. The swollen

Decrease in protein kinase and phosphatase activities in the liver nuclei of rats exposed to carbon tetrachloride.

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The alteration in protein kinase and phosphatase activities in the liver nuclei of rats administered carbon tetrachloride (CCl(4)) was investigated. Rats received a single oral administration of CCl(4) (1 ml/100 g body wt of 5, 10, and 25% CCl(4) in corn oil), and 5, 24, and 48 h later they were

The Pro33 isoform of integrin beta3 enhances outside-in signaling in human platelets by regulating the activation of serine/threonine phosphatases.

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Integrin beta(3) is polymorphic at residue 33 (Leu(33) or Pro(33)), and the Pro(33)-positive platelets display enhanced aggregation, P-selectin secretion, and shorter bleeding times. Because outside-in signaling is critical for platelet function, we hypothesized that the Pro(33) variant provides a

Mouse K-Cl cotransporter KCC1: cloning, mapping, pathological expression, and functional regulation.

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Although K-Cl cotransporter (KCC1) mRNA is expressed in many tissues, K-Cl cotransport activity has been measured in few cell types, and detection of endogenous KCC1 polypeptide has not yet been reported. We have cloned the mouse erythroid KCC1 (mKCC1) cDNA and its flanking genomic regions and

Streptozotocin-induced diabetes increases (Ca2+-Mg2+)-ATPase activity in hepatic plasma membranes of rats: involvement of protein kinase C.

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The alteration in calcium transport in the liver of rats with streptozocin(STZ)-diabetic state was investigated. STZ (6 mg/100 g body weight) was subcutaneously administered in rats, and 1 or 2 weeks later they were sacrificed by bleeding. STZ administration caused a remarkable elevation of serum

Activity of smooth muscle phosphatases 1 and 2A in rabbit basilar artery in vasospasm.

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OBJECTIVE Subarachnoid hemorrhage frequently leads to a long-term cerebral artery narrowing called vasospasm. Recently, the involvement of myosin light chain kinase has been found in experimental vasospasm in our laboratory. We therefore measured the activity of serine/threonine protein phosphatases

Studies of diarrhetic activity on pectenotoxin-6 in the mouse and rat.

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Diarrhetic activity of pectenotoxin-6 (PTX6), a shellfish contaminant in Japanese scallops (Patinopecten yessoensis), was studied in vivo. Mice gavaged with 5mg/kg PTX6 did not show diarrhea or fluid secretion, and no prominent pathological changes were observed. There was no synergistic toxicity of

Increase of metabolic activity and disruption of normal contractile protein distribution by bilirubin oxidation products in vascular smooth-muscle cells.

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OBJECTIVE Cerebral vasospasm is a common cause of morbidity and death following aneurysmal subarachnoid hemorrhage (SAH). Previous research has shown that bilirubin oxidation products (BOXes) are present in the cerebral spinal fluid in patients with SAH-induced cerebral vasospasm and can contribute

Deficiency of Src family kinases Fgr and Hck results in activation of erythrocyte K/Cl cotransport.

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Src-family kinases play a central role in regulation of hematopoietic cell functions. We found that mouse erythrocytes express the Src-family kinases Fgr and Hck, as well as Lyn. To directly test whether Fgr and Hck play any role in erythrocyte function, we analyzed red cells isolated from fgr-/-,

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