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Biomedical subjects

D Jensen

Publications and source records attributed to D Jensen.

114 records · Page 7Linked to original sources
PubMedDate not supplied

Mobilization of stored triglycerides from macrophages as free fatty acids.

Because many or most lipid-laden foam cells in atheromas and in xanthomas derive from macrophages, it is important to understand how they accumulate lipids and how they can divest themselves of lipids. The mobilization of stored triglycerides from macrophages was studied in cell cultures. Mouse resident peritoneal macrophages and J774 macrophages increased their triglyceride content six- to tenfold during a 24-hour incubation with free fatty acids complexed to albumin. Subsequent incubation in fresh medium containing free fatty acid-poor albumin was accompanied by a fall in cell triglyceride content (50% in 20 hours) and a corresponding increase in medium-free fatty acid. Release of free fatty acid was linear as a function of time, provided fresh medium was added hourly. When medium was not changed, release rates fell off rapidly, probably due to re-uptake of released free fatty acid. Chloroquine did not affect the rate of free fatty acid release. The results suggest that macrophages-foam cells can reduce their triglyceride stores via the action of a nonlysosomal (presumably cytoplasmic) neutral triglyceride lipase.

Animals↗
PubMedDate not supplied

Field trial in commercial broilers with a multivalent in ovo vaccine comprising a mixture of live viral vaccines against Marek's disease, infectious bursal disease, Newcastle disease, and fowl pox.

A multivalent in ovo vaccine (MIV) was tested for safety and efficacy in a commercial broiler complex. The MIV comprised five replicating live viruses including serotypes 1, 2, and 3 of Marek's disease virus (MDV), an intermediate infectious bursal disease virus (IBDV) and a recombinant fowl poxvirus (FPV) vector vaccine containing HN and F genes of Newcastle disease virus (NDV). The performance of MIV-vaccinated broilers was compared with that of hatchmates that received turkey herpesvirus (HVT) alone (routinely used in ovo vaccine in the broiler complex). The chickens that hatched from the MIV-injected and HVT-injected eggs were raised under commercial conditions in six barns. Barn 1 housed 17,853 MIV-vaccinated chickens and each of the barns 2-6 housed 18,472-22,798 HVT-vaccinated chickens. The HVT-vaccinated chickens were given infectious bronchitis virus (IBV) and NDV vaccines at hatch and at 2 wk of age. The MIV-vaccinated chickens received IBV vaccine at hatch and IBV + NDV at 2 wk of age. The relative values of hatchability of eggs, livability and weight gain of chickens, and condemnation rates at processing were comparable between the MIV and the HVT groups (P > 0.05). Chickens from the MIV- and the HVT-vaccinated groups were challenged with virulent viruses under laboratory conditions. The resistance of vaccinated chickens against Marek's disease could not be assessed because of high natural resistance of unvaccinated commercial broilers to virulent MDV. The relative resistances of the MIV- and the HVT-vaccinated groups, respectively, against other virulent viruses were as follows: IBDV, 100% for both groups; NDV, 81% vs. 19%; FPV, 86% vs. 0%. The successful use of MIV under field conditions expands the usefulness of the in ovo technology for poultry.

Animals↗
PubMedDate not supplied

Terodiline treatment of detrusor hyperreflexia in sclerosis multiplex.

A single-blind placebo controlled study on the efficacy of the anticholinergic and calcium blocking agent terodiline (Mictrol) on detrusor hyperreflexia has been done in 10 patients with multiple sclerosis in a stable state. The patients were evaluated by means of micturition charts, uroflowmetry and cystourethrometry, including electromyography of the periurethral sphincter in females and the bulbocavernosus muscle in males. After 6 weeks on terodiline 25 mg twice a day, the volume per voluntary micturition increased 23 per cent. The number of incontinence episodes decreased. Bladder volume at first urge increased 55 per cent, the maximum cystometric capacity increased 52 per cent, and the detrusor pressure of the first involuntary contraction decreased 27 per cent. The number of voluntary micturitions and voided volume per 24-hour, maximum and average flow, residual urine and urethral pressure at first urge remained unaltered. Terodiline is an alternative drug in the treatment of detrusor hyperreflexia. A follow-up investigation indicates that an increase in terodiline dosage may improve the results.

Adult↗