A reciprocal rhythmic pattern of 2 afferent hormonal signals, anorexigenic leptin and orexigenic ghrelin, imparts rhythmicity to the neuropeptide Y (NPY) system, the final common pathway for appetite expression in the hypothalamus. We now show that leptin inhibits both the secretion of gastric ghrelin and the stimulation of feeding by ghrelin. We propose that this dual leptin restraint is the m...

Following the publication of the article, the authors noticed an error in the published version of Fig. 3. In brief, certain of the images were misplaced, errors which occurred during the preparation and assembly of the figure owing to oversights in labeling of the image data. The corrected version of Fig. 3 is included below. The authors regret that this error occurred, and apologize for the i...

In the practice guideline “Diagnosis, Management, and Treatment of Hepatitis C: An Update ” (HEPATOLOGY 2009:49 (4): 1335-1374; DOI: 10.1002/hep.22759), two errors have been corrected in the online version. 1. The Treatment Objectives and Outcomes section contained an error which has been corrected to read: “Short-term outcomes can be measured biochemically (normalization of serum ALT levels), ...

Lactating rabbits (n=1335) were artificially inseminated to study the effect of the addition of caffeine on rabbit semen stored for up to 96 h. Concentration of 0-5 mM/l were tested. Whereas a concentration of 0.2 mM/l increased spermatozoa motility, higher concentration values adversely affected reproductive parameters. Spermatozoa stored at 18 degrees C for 72-96 h did not have the capacity t...

In the practice guideline “Diagnosis, Management, and Treatment of Hepatitis C: An Update ” (HEPATOLOGY 2009:49 (4): 1335-1374; DOI: 10.1002/hep.22759), two errors have been corrected in the online version. 1. The Treatment Objectives and Outcomes section contained an error which has been corrected to read: “Short-term outcomes can be measured biochemically (normalization of serum ALT levels), ...

espanolSe propone un analisis psico-politico de las culturas politicas locales tres ciudades capitales: Cordoba, Neuquen y Salta (Argentina). Para ello, se profundizo en la descripcion variables tipicas estudios culturales como valores, ideologia, religiosidad, incorporando corte micro-social sofisticacion politica, eficacia politica modalidades participacion politica. Se realizo estudio empiri...