Lloyd V. Knutson

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The effect of ketoconazole on the jejunal permeability and CYP3A metabolism of (R/S)-verapamil in humans.

Robin Sandström, Thomas Knutson, Lloyd V. Knutson, Bjarne Jansson, Hans Lennernaes
British journal of clinical pharmacology
1999

AIMS The purpose of this human intestinal perfusion study was to investigate the effect of ketoconazole on the jejunal permeability and first-pass metabolism of (R)- and (S)-verapamil in humans. … (More)

Jejunal permeability and hepatic extraction of fluvastatin in humans.

Anders Lindahl, Robin Sandström, +4 authors Hans Lennernaes
Clinical pharmacology and therapeutics
1996

OBJECTIVES The primary objective was to investigate the effective permeability and the hepatic extraction of fluvastatin, a new 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor,… (More)

The jejunal secretion of histamine is increased in active Crohn's disease.

Lloyd V. Knutson, O Ahrenstedt, B. G. Odlind, Roger Hällgren
Gastroenterology
1990

Previous studies of mast-cell density and histamine content in biopsy specimens in patients with Crohn's disease have yielded conflicting results. In this in vivo study we have measured the jejunal… (More)

Jejunal permeability in humans in vivo and rats in situ: investigation of molecular size selectivity and solvent drag.

Urban Fagerholm, Daniel Nilsson, Lloyd V. Knutson, Hans Lennernaes
Acta physiologica Scandinavica
1999

The mechanisms controlling rates and routes for intestinal absorption of nutrients and small compounds are still not fully clarified. In the present study we aimed to investigate the effect of… (More)

Jejunal release of prostaglandin E2 in Crohn's disease: relation to disease activity and first-degree relatives.

O Ahrenstedt, Roger Hällgren, Lloyd V. Knutson
Journal of gastroenterology and hepatology
1994

Patients with Crohn's disease of the distal ileum show increased permeability to hyaluronan and increased release of histamine and complement components in uninvolved parts of the proximal jejunum.… (More)

Factors affecting Sciomyzidae (Diptera) across a transect at Skealoghan Turlough (Co. Mayo, Ireland)

Christopher D. Williams, James Moran, +4 authors Jean-Claude Vala
Aquatic Ecology
2007

Sciomyzid flies, which have potential as bio-indicators, were sampled by sweep-net surveys at a turlough in the west of Ireland. Turloughs are ephemeral wetlands (unique to Ireland), which flood from… (More)

Key aspects of the biology of snail-killing Sciomyzidae flies.

William L Murphy, Lloyd V. Knutson, +4 authors Jean-Claude Vala
Annual review of entomology
2012

The biology of snail-killing flies (Diptera: Sciomyzidae) has been studied intensively over the past half-century, especially over the past decade. Today, sciomyzids are biologically the best-known… (More)

u ^ 9 Biosystematic and Biological Control Information Systems in Entomology

Lloyd V. Knutson, F. Christian Thompson, Richard Carlson

Carbonic anhydrase in the normal rat stomach and duodenum and after treatment with omeprazole and ranitidine.

Gudmar Lönnerholm, Lloyd V. Knutson, Per J. Wistrand, Gunnar Flemström
Acta physiologica Scandinavica
1989

A low pH in the lumen of the stomach and duodenum stimulates gastroduodenal mucosal secretion of bicarbonate, particularly in the duodenum. Long-term deprivation of this acid stimulus might affect… (More)

Prefrontal sulcal prominence is inversely related to response to clozapine in schizophrenia.

Lee Friedman, Lloyd V. Knutson, M Shurell, Howard Meltzer
Biological psychiatry
1991

The object of this study was to determine if brain computed tomography (CT) scan measures are related to treatment response to clozapine, an atypical antipsychotic drug that is effective in some… (More)

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