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Biomedical subjects

S Caine

Publications and source records attributed to S Caine.

8 recordsLinked to original sources
PubMed1999

Additional risk factors in atrial fibrillation patients not receiving warfarin.

OBJECTIVE: To study how many elderly inpatients with previously diagnosed atrial fibrillation were not receiving anticoagulant prophylaxis, and the prevalence of additional risk factors in these patients. METHODS: All new admissions to a department of medicine for the elderly were screened for atrial fibrillation. Additional risk factors were analysed in those with established atrial fibrillation who were not receiving warfarin. Previous hospital admissions, documentation of why prophylaxis was not being used and use of aspirin as an alternative agent were also examined. RESULTS: 56 patients had previously diagnosed atrial fibrillation; 82% were not taking warfarin and 71% of these were not on aspirin either. All patients not taking warfarin had one additional risk factor for stroke and 95% had two or more. Fifty-two percent had attended hospital when atrial fibrillation was present within the previous 3 years and there was nothing documented in their records to explain why anticoagulation had not been used. CONCLUSIONS: Most elderly inpatients with established atrial fibrillation were not taking warfarin. All had additional risk factors for stroke, which increase the absolute benefit of anticoagulation.

Aged↗
PubMed1996

Towards consensus.

Explore the source record for details and available documents.

Consensus Statements as Topic↗
PubMed1990

The influence of calciotrophic hormones on lymphocyte transformation and interleukin-2 production in human mononuclear cells.

Peripheral blood mononuclear cells (PBMC) display receptors for parathyroid hormone (PTH) and calcitonin (CT) and, when activated, express receptors for 1,25 dihydroxyvitamin D3 (1,25(OH)2D3). The role of these receptors in unclear. It is well established that 1,25 dihydroxyvitamin D3 (1,25(OH)2D3) has a significant effect on lymphocyte transformation and interleukin-2 (IL-2) activity in PBMC's. We have proceeded to compare the effects of the calciotrophic hormones, 1,25(OH)2D3, 24,25 dihydroxyvitamin D3 (24,25(OH)2D3), 25 dihydroxyvitamin D3 (25(OH)D3), bovine (1-35)PTH (b(1-35)PTH) and salmon CT on both lymphocyte transformation and IL-2 activity in PBMC's from normal human volunteers. We have also sought an indication as to which subset of cells is responsible for the 1,25(OH)2D3 effect. Unlike the other calciotrophic hormones 1,25(OH)2D3 inhibited the proliferation of phytohemagglutinin (PHA), concanavalin A (ConA) and pokeweed mitogen (PWM) stimulated cells. 1,25(OH)2D3 had a significantly greater effect on PHA induced cell proliferation and only inhibited cells with the T-helper/inducer (TH, CD4 + ve) phenotype, this suggested that 1,25(OH)2D3 may act selectively on the cells with CD4 + ve phenotype. In addition, of the calciotrophic hormones, 1,25(OH)2D3 had a greater effect on IL-2 activity. These findings indicate that 1,25(OH)2D3 and not the other calciotrophic hormones has a significant immunomodulatory effect.

24,25-Dihydroxyvitamin D 3↗
PubMed1984

Simplified analytical methods for the measurement of the synthesis rate of plasma proteins in vivo by the [14C]carbonate method.

We describe a method for obtaining the specific activity of 14C in urea, essential in the measurement of the synthesis rate of a plasma protein in vivo, which is simpler than the original procedure. The principle is the measurement of 14CO2 and NH4+ separately, after incubation with urease. A simple alteration gives samples of 13CO2 for mass spectrometry. The 'recoveries' of 14C and 13C in urea were invariably between 90 and 96% and the CV was 3%.

Ammonia↗
PubMedDate not supplied

Neuropsychological functioning following fetal striatal transplantation in Huntington's chorea: three case presentations.

Neurotransplantation has been proposed as a potential treatment for the neurodegenerative disorder of Huntington's disease (HD), which currently has no effective therapy. While patients with Parkinson's disease have received neurotransplantation, until recently no HD patients have undergone transplantation for HD with standardized evaluations of their progress following surgery. The current report presents the cognitive changes in three patients with HD who underwent bilateral transplantation of human fetal striatal tissue. As part of the pre- and postsurgical evaluation, all three patients were administered a neuropsychological battery sensitive to the cognitive effects of HD within 2 mo prior to surgery and at 4-6 mo following transplantation. Four to 6 mo subsequent to surgery, all patients demonstrated increased scores on some measures of cognitive functioning. However, the pattern of changes was not uniform across subjects. These findings suggest that fetal striatal transplantation may improve some of the cognitive symptoms associated with HD in the three reported patients.

Adult↗