lysosomal storage diseases/phosphatase

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An in vitro model for abnormal skeletal development in the lysosomal storage diseases.

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Lysosomal storage diseases such as GM1-gangliosidosis are associated with skeletal abnormalities. Radiological and histological studies, both in human and corresponding animal models, indicate retarded bone formation. Since cartilage maturation leads to bone formation, we developed an in vitro

Role of phospholipase C in chlorphentermine-induced pulmonary phospholipidosis in rat.

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Daily, oral administration of chlorphentermine (60 mg/kg) for 5 days to rats produced a significant increase in the concentration of whole lung total phospholipid as well as sphingomyelin, phosphatidylserine, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, and

Reversible, hepatic, lysosomal phospholipidosis in rat induced by subchronic daily administration of trospectomycin sulfate.

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Trospectomycin sulfate is an experimental aminocyclitol antibiotic which has been shown previously to induce the formation of cytoplasmic lamellar bodies in rat and dog liver in subchronic experiments. The effect of repeated daily administration of trospectomycin sulfate on hepatic phospholipid

Characterization and quantification of acid phosphatase and glycoside hydrolases in rabbit cornea.

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The optimal reaction condition and kinetic properties of 8 lysosomal hydrolases in rabbit cornea determined with the use of fluorogenic derivatives of 4-methylumbelliferone are described. The enzymes studied were alpha- and beta-glucosidase alpha- and beta-galactosidase, alpha-mannosidase,

Increased hepatic density and phospholipidosis due to amiodarone.

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Amiodarone is an amphiphilic iodinated compound that is used as a treatment for refractory ventricular arrhythmias. During evaluation for possible pulmonary toxicity, a patient receiving amiodarone was noted to have an increase in the density of his liver as seen on computed tomographic (CT)

Amiodarone hepatotoxicity with absent phospholipidosis and steatosis: a case report and review of amiodarone toxicity in various organs.

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We present the first description of amiodarone toxicity in the liver without phospholipidosis or steatosis. In doing so, we will review the various effects of amiodarone toxicity in various organs. The patient is a young adult who had cardiac reconstruction as a child for transposition of the great

The lesions of an ovine lysosomal storage disease. Initial characterization.

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An inherited disease associated with deficiencies of beta-galactosidase and alpha-neuraminidase has been identified recently in sheep. The clinical signs, the deficiency of lysosomal enzymes, and the familial nature of the disorder suggested that the condition was a lysosomal storage disease. Four

Investigating the role of endogenous opioid system in chloroquine-induced phospholipidosis in rat liver by morphological, biochemical and molecular modeling studies.

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Drug-induced phospholipidosis (DIPL) is characterized by phospholipid storage in the lysosomes of affected tissues. Many severe effects and toxicities have been linked to DIPL. The aim of this study was to determine whether the endogenous opioid system is involved in chloroquine-induced

Cationic amphiphilic drug-induced renal cortical lysosomal phospholipidosis: an in vivo comparative study with gentamicin and chlorphentermine.

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Daily subcutaneous injection of gentamicin (100 mg/kg) for 2 days produced a significant decrease in the activities of alkaline phosphatase, a brush-border membrane marker, and Na+-K+ ATPase, a basolateral membrane marker, in adult rat kidney cortex. Analysis of homogenate and lysosomal fractions

Hepatic Phospholipidosis Is Associated with Altered Hepatobiliary Function as Assessed by Gadoxetate Dynamic Contrast-enhanced Magnetic Resonance Imaging.

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To determine if amiodarone induces hepatic phospholipidosis (PLD) sufficient to detect changes in hepatobiliary transporter function as assessed by gadoxetate dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), rats were orally dosed with vehicle (1% methyl cellulose) or amiodarone (300

Angiokeratoma corporis diffusum (Fabry disease). A lysosomal disease.

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Angiokeratoma corporis diffusum (Fabry disease) is an X-linked recessive disease. We had an opportunity to examine a heterozygous female patient with angiokeratoma and cornea verticillata. The patient's serum alpha-galactosidase activity was reported to be about 50% of normal. Skin lesion biopsy

Plasma acid hydrolases in normal adults and children, and in patients with some lysosomal storage diseases.

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Optimal assay conditions are described for plasma alpha-galactosidase, beta-glactosidase, beta-glucuronidase, alpha-mannosidase, alpha-glucosidase, N-acetyl-beta-glucosaminidase, alpha-fucosidase, N-acetyl-alpha-glucosaminidase, acid phosphatase and arylsulphatase A. The levels of these activities

Cytotoxicity and lamellar body induction potential of a racemic benzamide antiarrhythmic compound and enantiomers in cultured rat hepatocytes.

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A wide variety of cationic amphiphilic compounds induce cytoplasmic lamellar bodies, accompanied by phospholipidosis and often coincidental with toxicity. The in vitro cytotoxic and lamellar body-inducing potentials of a racemic cationic amphiphilic benzamide antiarrhythmic compound and its

In vivo toxicity and pulmonary effects of promazine and chlorpromazine in rats.

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Cationic amphiphilic drugs induce a phospholipid storage disorder known as phospholipidosis. Halogenated analogs of the drugs are more potent inducers of phospholipidosis when compared to nonhalogenated analogs. Two such antipsychotic drugs, promazine and chlorpromazine, are effectively taken up by

Study of influence of sex and age on human serum lysosomal enzymes by using 4-methylumbelliferyl substrates.

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The sex and age dependence of activity of eight glycosidases and acid phosphatase was assayed in serum samples using the 4-methylumbelliferyl substrates. The activity of these enzymes does not change in relation to sex and to age except for acid phosphatase and beta-galactosidase which show

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