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J Kolberg

Publications and source records attributed to J Kolberg.

77 records · Page 5Linked to original sources
PubMedDate not supplied

An evaluation of some factors affecting the detection of blood group antibodies by automated methods.

Some factors affecting the sensitivity of the automated methods for blood group antibody detection have been evaluated. The experiments revealed influencing differences between various albumin preparations. In the BMC method, one lot of albumin permitted no significant antibody detection. In the LISP technique, a plateau of maximum Polybrene activity was found. The beginning of this plateau depended on both the albumin preparation and the Polybrene lot. In the BMC method, methyl cellulose gave optimal sensitivity within a concentration range of 0.3 to 0.5 per cent. The stability of test cells stored in ACD at 4 C was studied. All test cells could be used safely up to two weeks. Cells from different donors showed variable reactivity after three weeks.

Animals↗
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Short and long-term effects of interferon on serum markers of hepatitis C virus replication.

Hepatitis C virus RNA (HCV-RNA) and serological markers of HCV infection were measured in 30 patients with chronic hepatitis C who had been treated with interferon (IFN). Patients were classified into four groups according to serum alanine aminotransferase (ALT) levels after treatment. These were: as complete responders (CR); partial responders (PR); transient responders (TR); and non-responders (NR). In all 11 patients in the CR group, HCV-RNA disappeared from serum for at least 24 months and anti-c100-3 decreased progressively during this time. In the PR group, four of five patients were positive for HCV-RNA in spite of the improvement of ALT levels and decline of anti-c100-3. In the TR and NR groups, HCV-RNA disappeared transiently or remained persistently positive. The results indicate that IFN-mediated improvement of ALT and decrease of anti-HCV (anti-c100-3) were not always related to the disappearance of HCV-RNA from serum. On the other hand, sustained disappearance of HCV-RNA from serum was demonstrated in the patients who did not have post-treatment ALT relapse. This indicates that IFN can eradicate HCV from serum in some patients and provide a clinical remission of chronic hepatitis C.

Alanine Transaminase↗