Lecithin:cholesterol acyltransferase: symposium on 50 years of biomedical research from its discovery to latest findings.

LCAT converts free cholesterol to cholesteryl esters in the process of reverse cholesterol transport. Familial LCAT deficiency (FLD) is a genetic disease that was first described by Kaare R. Norum and Egil Gjone in 1967. This report is a summary from a 2017 symposium where Dr. Norum recounted the history of FLD and leading experts on LCAT shared their results. The Tesmer laboratory shared structural findings on LCAT and the close homolog, lysosomal phospholipase A2. Results from studies of FLD patients in Finland, Brazil, Norway, and Italy were presented, as well as the status of a patient registry. Drs. Kuivenhoven and Calabresi presented data from carriers of genetic mutations suggesting that FLD does not necessarily accelerate atherosclerosis. Dr. Ng shared that LCAT-null mice were protected from diet-induced obesity, insulin resistance, and nonalcoholic fatty liver disease. Dr. Zhou presented multiple innovations for increasing LCAT activity for therapeutic purposes, whereas Dr. Remaley showed results from treatment of an FLD patient with recombinant human LCAT (rhLCAT). Dr. Karathanasis showed that rhLCAT infusion in mice stimulates cholesterol efflux and suggested that it could also enhance cholesterol efflux from macrophages. While the role of LCAT in atherosclerosis remains elusive, the consensus is that a continued study of both the enzyme and disease will lead toward better treatments for patients with heart disease and FLD.

Heparinized cardiopulmonary bypass circuits and low systemic anticoagulation: an analysis of nearly 6000 patients undergoing coronary artery bypass grafting.

OBJECTIVE: Heparin coating of cardiopulmonary bypass circuits reduces the inflammatory response and increases the thromboresistance during extracorporeal circulation. These properties enables a lower systemic heparin dose, which has been shown to reduce the need for blood transfusions. Experience with this technique accumulated over 11 years has been analyzed. METHODS: All patients underwent on-pump coronary artery bypass grafting with heparin-coated circuits. Apart from some patients receiving a high intraoperative dose of aprotinin, the systemic heparin dose was reduced, with a lower level of an activated clotting time of 250 seconds during extracorporeal circulation. The overall strategy aimed at a fast-track regimen, with early extubation, minimal use of blood transfusions, and rapid postoperative recovery. RESULTS: Altogether, 5954 patients were included; 1131 (19.0%) were female (median age, 70 years), and 4823 were male (median age, 65 years). The median additive EuroSCORE was 3 (range, 0-14; mean 3.5 ± 2.5). No significant signs of clotting were seen in any part of the extracorporeal circuit. Bank blood products were given to 427 (7.2%) patients. Median extubation time was 1.7 hours. The stroke rate was 1.0%, transient neurologic deficits occurred in 0.7%, and perioperative myocardial infarction occurred in 1.2%. On the fifth day, 88.1% of the patients were physically rehabilitated and ready for discharge. Thirty-day mortality was 0.9% (54 patients). CONCLUSIONS: The experience with this patient cohort including mostly low- to medium-risk patients with a relatively short cardiopulmonary bypass time indicates that coronary artery bypass grafting performed with heparin-coated circuits and reduced level of systemic heparinization is safe and results in a very satisfactory clinical course. No signs of clotting or other technical incidents were recorded.

A comparison of actual cost, DRG-based cost, and hospital reimbursement for liver transplant patients.

The financing of health care services in Norway has been changed from a system of global budgeting to a system partly based on Diagnosis-Related Groups (DRG). The government has decided to derive a part of the hospital revenue from DRG-based, per-patient financing. The aim of this study is to determine whether the present remuneration system covers the actual hospital expenses of liver transplant patients, and whether the present method of calculating DRG-costs is adequate for our institution. Our group developed a prospective method of determining the actual cost per patient. We closely observed and collected the data of eight liver transplant patients during their hospital stay. We divided each of the patients' resource requirements into four categories; heavy intensive care, light intensive care, intermediate care, and ordinary care. In addition, we recorded the number of staff involved, the duration of surgery, the major procedures, and the medical- and material costs. The actual cost of each patient was calculated, based on these data. The actual cost was compared with the corresponding hospital remuneration for each patient. Median cost for liver transplantation was NOK 536.785 (range: NOK 295.113-NOK 844.345) (1$=7,5 NOK), while the corresponding hospital refund was NOK 457.785 (range: NOK 436.465-NOK 483.040). The difference is not statistically significant ( P=0.2). The average 100% DRG-based cost of a liver transplantation was NOK 730.321, which is significantly higher than the actual cost ( P=0.02). The hospital's reimbursement for liver transplantation did not differ significantly from the actual registered cost. The computed cost was significantly lower than the DRG-based cost.