Constraint query languages are natural extensions of relational database query languages. A framework for their declarative speciication (constraint calculi) and eecient implementation (low data complexity and secondary storage indexing) was presented in Kanellakis et al., 1995. Constraint query algebras form a procedural language layer between high-level declarative calculi and low-level index...

Gloss, Bernd, Sonia Villegas, Francisco J. Villarreal, Anselmo Moriscot, and Wolfgang H. Dillmann. Thyroid hormone-induced stimulation of the sarcoplasmic reticulum Ca21 ATPase gene is inhibited by LIF and IL-6. Am J Physiol Endocrinol Metab 278: E738–E743, 2000.—We investigated the effects of the leukemia inhibitory factor (LIF) and interleukin-6 (IL-6) on 3,38, 5-triiodo-L-thyronine, or thyro...

Metges, Cornelia C., Yong-Ming Yu, Wei Cai, XiaoMing Lu, Sue Wong, Meredith M. Regan, Alfred Ajami, and Vernon R. Young. Oxoproline kinetics and oxoproline urinary excretion during glycineor sulfur amino acid-free diets in humans. Am J Physiol Endocrinol Metab 278: E868–E876, 2000.—L-5-oxoproline (L-5-OP) is an intermediate in glutathione synthesis, possibly limited by cysteine availability. Ur...

Abely, M., P. Dallet, M. Boisset, and J. F. Desjeux. Effect of cholera toxin on glutamine metabolism and transport in rabbit ileum. Am J Physiol Gastrointest Liver Physiol 278: G789–G796, 2000.—The aim of the present study was to evaluate the effect of cholera toxin on energy balance from intestinal glutamine metabolism and oxidation, glutaminedependent sodium absorption, and cholera toxin-depe...

CARMEN ALVAREZ,1,2 DANIELLE BAILBE,1 FRANÇOISE PICAREL-BLANCHOT,1 ERIC BERTIN,1 ANA-MARIA PASCUAL-LEONE,2 AND BERNARD PORTHA1 1Laboratoire Physiopathologie de la Nutrition, Centre National de la Recherche Scientifique Enseignement Supérieur Associé 7059, Université Paris, 75251 Paris, France; and 2Instituto de Bioquimica-Centro Mixto Universite Complutense y Consejo Superior Investigaciones Cie...

Oates, Phillip S., Carla Thomas, Elizabeth Freitas, Matthew J. Callow, and Evan H. Morgan. Gene expression of divalent metal transporter 1 and transferrin receptor in duodenum of Belgrade rats. Am J Physiol Gastrointest Liver Physiol 278: G930–G936, 2000.—Regulation of iron absorption is thought to be mediated by the amount of iron taken up by duodenal crypt cells via the transferrin receptor (...

Graham, T. E., V. Sgro, D. Friars, and M. J. Gibala. Glutamate ingestion: the plasma and muscle free amino acid pools of resting humans. Am. J. Physiol. Endocrinol. Metab. 278: E83–E89, 2000.—Monosodium glutamate (MSG) ingestion is known to increase plasma glutamate concentration, and MSG infusion stimulates insulin secretion. We investigated the impact of MSG ingestion on both the plasma and i...

Courtois, F., I. Suc, C. Garofalo, M. Ledoux, E. Seidman, and E. Levy. Iron-ascorbate alters the efficiency of Caco-2 cells to assemble and secrete lipoproteins. Am J Physiol Gastrointest Liver Physiol 279: G12–G19, 2000.— Although oxidative stress has been implicated in development of gut pathologies, its role in intestinal fat transport has not been investigated. We assessed the effect of Fe2...

Rhodopsin is the primary molecule in the visual signaling cascade in vertebrate and invertebrate photoreceptor cells. Upon light absorption, the retinal chromophore in rhodopsin undergoes isomerization from the 11-cis to the all-trans configuration, which initiates the photoactivation process. In vertebrate retinas, the final photoproduct, meta-rhodopsin, activates a subtype of heterotrimeric G...