Biomedical subjects

E Houser

Publications and source records attributed to E Houser.

7 recordsLinked to original sources

PubMed1995

Single pediatric donor kidneys for adult recipients: the San Antonio experience.

Early, sustained and significant growth occurs in single kidneys from donors < or = 4 years of age transplanted into adult recipients who are receiving CsA therapy. Early and late renal function of single kidneys from donors < or = 4 years of age transplanted into adult recipients is more than adequate. Allograft loss from surgical complications (5%) is not excessive. Allografts from donors < or = 4 years of age are very vulnerable to early rejection. Allograft survival of single kidneys from donors < or = 4 years of age is equal to that reported for cadaveric kidneys from donors > 50 years of age. Single kidneys from donors < or = 5 years of age have an allograft survival equal to that for kidneys from donors of the same age that are transplanted en-bloc. One-year allograft survival among recipients of kidneys from donors < or = 4 years of age receiving 14 days of induction therapy and aggressive treatment of rejection (75%) approaches that of the ideal donor (83%). Kidneys from donors < or = 4 years of age represent an underutilized resource.

Adolescent↗

PubMed1977

Effects of lipid phase transition of the freeze-cleaved envelope of Escherichia coli.

We studied the fine structure of the envelope of Escherichia coli auxotroph K1060 after the cells were grown in the presence of one of the following fatty acids; oleic, palmitelaidic, or elidic acid. The cells were freeze-fractured after exposure to temperatures above and below the lipid phase transition range. As judged by freeze-etching methods, we observed that below the transition range the fracture plane of the inner membrane showed the typical aggregation of intramembranous particles (IMP) and concomitant development of areas devoid of IMP. In these areas we found a regular arrangement of equally spaced ridges, often intersected at 90 degrees by arrays of similar ridges. The ridges were composed of spherical particles measuring 4 to 5 nm in diameter. Formation and melting of these arrays took place within 15 to 30s after temperature shift-down or shift-up, respectively. Fixation in glutaraldehyde prevented these changes. The outer-membrane fracture plane revealed ordered areas to a lesser degree; these were discernible only by the regular arrangement of the IMP of the concave fracture plane. We interpret the data by suggesting that the pattern of ridges in E. coli K1060 is analogous to the band patterns described for artificial liposomes, and that the particles, possibly proteins, are lined up or extruded along the ridges during membrane lipid crystallization.

Cell Membrane↗

PubMedDate not supplied