Shinichi Yamamoto | PubMed Health

PubMed2003

[The use of milrinone in a patient with mitral regurgitation and severe pulmonary hypertension: a case report].

A 65-year-old female with mitral regurgitation was scheduled for the mitral valve surgery. However, because of the severe pulmonary hypertension, the patient needed evaluation on the reversibility of pulmonary hypertension and the safety of the surgical procedure. Milrinone, a phosphodiesterase inhibitor with vasodilating and positive inotropic properties, known to lower pulmonary vascular resistance was administered to the patient. Milrinone showed a prompt decrease of pulmonary artery pressure and an increase of cardiac output, and the cardiac surgery was performed uneventfully. It is considered that milrinone is useful in lowering pulmonary vascular resistance and assessing the reversibility of pulmonary hypertension in patients with severe pulmonary hypertension undergoing cardiac surgery.

Aged↗

PubMed2002

A comprehensive rice transcript map containing 6591 expressed sequence tag sites.

To determine the chromosomal positions of expressed rice genes, we have performed an expressed sequence tag (EST) mapping project by polymerase chain reaction-based yeast artificial chromosome (YAC) screening. Specific primers designed from 6713 unique EST sequences derived from 19 cDNA libraries were screened on 4387 YAC clones and used for map construction in combination with genetic analysis. Here, we describe the establishment of a comprehensive YAC-based rice transcript map that contains 6591 EST sites and covers 80.8% of the rice genome. Chromosomes 1, 2, and 3 have relatively high EST densities, approximately twice those of chromosomes 11 and 12, and contain 41% of the total EST sites on the map. Most of the EST-dense regions are distributed on the distal regions of each chromosome arm. Genomic regions flanking the centromeres for most of the chromosomes have lower EST density. Recombination frequency in these regions is suppressed significantly. Our EST mapping also shows that 40% of the assigned ESTs occupy only approximately 21% of the entire genome. The rice transcript map has been a valuable resource for genetic study, gene isolation, and genome sequencing at the Rice Genome Research Program and should become an important tool for comparative analysis of chromosome structure and evolution among the cereals.

Chromosome Mapping↗