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  • 1
    ISSN: 1615-5947
    Keywords: Chylous ascites ; ascites ; abdominal aortic operations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three patients, two women, one man (mean age 74 years), who had abdominal aortic aneurysms (2) or aortobifemoral surgery (1), developed chylous ascites postoperatively. They were studied to determine their clinical course and develop a plan for management of this complication. In each patient, the ascites was not manifest until abdominal swelling developed two weeks after operation, and the problem was confirmed by the finding of milky fluid on paracentesis. A low serum albumin (mean 2.6 gm) was also characteristic. The ascites was not altered by parenteral nutrition or reduction of dietary fat and ingestion of medium chain triglycerides. In one patient (man, age 93) the ascites resolved spontaneously two months after abdominal aortic aneurysm surgery. Another (woman, age 70) was cured following operative ligation of a lymphatic fistula identified at operation five weeks after abdominal aortic aneurysm repair. In the third (woman, age 60), the ascites resolved immediately following placement of a peritoneal venous shunt six weeks after an aortobifemoral bypass. Chylous ascites is rare after aortic surgery and manifests itself about two weeks after operation, at times after discharge from hospital. It has an indolent course, but may resolve spontaneously up to two months after operation. Its course appears not to be foreshortened by diet, including omission of fat, but can be successfully treated surgically with a shunt or fistula ligation. If done early a protracted hospital course may be avoided.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5001
    Keywords: fMet-tRNA ; ATP ; Aptamer ; Multidimensional NMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Novel HCCNH TOCSY NMR experiments are presented that provide unambiguous assignment of the exchangeable imino proton resonances by intranucleotide through-bond connectivities to the (assigned) nonexchangeable purine H8 and pyrimidine H6 protons in uniformly 15N-, 13C-labeled RNA oligonucleotides. The HCCNH TOCSY experiments can be arranged as a two-dimensional experiment, correlating solely GH8/UH6 and GH1/UH3 proton resonances (HCCNH), of as three-dimensional experiments, in which additional chemical shift labeling either by GN1/UN3 (HCCNH) or by GC8/UC6 (HCCNH) chemical shifts is introduced. The utility of these experiments for the assignment of relatively large RNA oligonucleotides is demonstrated for two different RNA molecules.
    Type of Medium: Electronic Resource
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