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Biomedical subjects

U Leuschner

Publications and source records attributed to U Leuschner.

162 records · Page 9Linked to original sources
PubMed1971

[Liver abscess].

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Cholangitis↗
PubMedDate not supplied

Detection of 6-acetylmorphine in vitreous humor and cerebrospinal fluid--comparison with urinary analysis for proving heroin administration in opiate fatalities.

The concentrations of morphine and 6-acetylmorphine (6-AM) in urine, cerebrospinal fluid (CSF), and vitreous humor (VH) and the morphine concentrations in blood were determined by gas chromatography-mass spectrometry for 29 fatalities after abuse of heroin either alone or in combination with alcohol and other drugs. 6-AM was found above a quantitation limit of 1 ng/mL in urine in 89% of the cases, in CSF in 68% of the cases, and in VH in 75% of the cases. The 6-AM concentrations in CSF (mean, 10 ng/mL) and VH (mean, 17 ng/mL) were in general much smaller than in urine (mean, 170 ng/mL); therefore, the different pharmacokinetic behavior of the fluids is discussed. There is no uniformity between the three fluids with respect to the presence or absence of 6-AM. Therefore, CSF or VH may be used as complementary or alternative materials to urine in order to prove heroin uptake in opiate fatalities.

Adult↗
PubMedDate not supplied

Oral bile acid treatment of biliary cholesterol stones.

Cholesterol gallbladder stones can be dissolved with chenodeoxycholic acid (CDCA) or ursodeoxycholic acid (UDCA). Response rate is 60-90%, dissolution rate 60% in stones not exceeding 1.5 cm in diameter. Mean treatment time amounts to 18 months. To improve oral litholysis: 1) UDCA was combined with the amino acid taurine, 2) CDCA and UDCA were administered in a single bedtime dose, 3) they were combined, each bile acid in half dosage, and 4) they were mixed with terpenes. Although there was some improvement with the combination therapy, final outcome is still suboptimal. Many investigations have been performed concerning gallbladder function, mucus production and nucleating factors, showing both that cholesterol supersaturation of bile is the conditio sine qua non for gallstone formation and that other factors play an additional, important role for the development of the first nidus. These factors have to be considered when therapy shall be improved. As yet oral litholysis has shown neither drug-related side effects nor lethality. It is not more expensive than surgery. Direct contact litholysis with methyl tert-butyl ether could reduce the indication for oral treatment to floating stones or patients who refuse gallbladder puncture. But although oral litholysis does not provide us with optimal results and needs further improvements, it will always keep its place in gallstone therapy.

Acyl Coenzyme A↗