Biomedical subjects

J Acres

Publications and source records attributed to J Acres.

4 recordsLinked to original sources

PubMed2004

Homocysteine, Alzheimer genes and proteins, and measures of cognition and depression in older men.

The epsilon4 allele of apolipoprotein E (APOE), and the plasma levels of APOE, amyloid beta-protein precursor, amyloid beta1-40 (Abeta40) and homocysteine (Hcy) have all been correlated with the presence of dementia. Mutations in the methylnetetrahydrofolate reductase enzyme (MTHFR) have been associated with elevated levels of Hcy. This study explored the association of these factors with cognition and depression in community dwelling older men. Two hundred and ninety-nine men, mean age 78.9 years (SD 2.8), were studied in this cross-sectional survey. Mean plasma Hcy was 13.5 (SD 5.3) micromol/L. The MTHFR genotype had no obvious impact on Hcy levels. Ln Hcy and Ln Abeta40 were both inversely correlated with calculated glomerular filtration rate (cGFR), r = -0.41 (p < 0.001) and r = -0.28 (p < 0.001), respectively. There was a positive correlation between Ln Hcy and Ln Abeta40, r = 0.19 (p < 0.001), which remained significant after adjusting for cGFR, with a doubling of Hcy associated with a 24% increase of Abeta40. The e4 allele was associated with increased depressive symptoms as measured by the Geriatric Depression Scale-15, Odds ratio (OR) = 2.59 (95%CI 1.06-6.34) and poorer performance on the Clock Drawing Test, OR = 2.32 (95% CI: 1.25-4.29). There was a positive association between Abeta40 and Hcy, even after adjustment for cGFR in this sample of well, community dwelling older men. This association may help elucidate the link between elevated levels of Hcy and Alzheimer's disease.

Aged↗

PubMed1998

Psychological distress and suicidal ideation among 15-24-year-olds presenting to general practice: a pilot study.

OBJECTIVES: The study sought to determine: (i) the prevalence rates of psychological distress and suicidal ideation among 15-24-year-old patients presenting to general practice; and (ii) the relationship between patients' presenting complaints and their levels of psychological distress and suicidal ideation. METHOD: This was a pilot study designed to sample patients aged 15-24 years presenting consecutively to general practitioners during a 4-week period. The study was set among five general practices in the western suburbs of Perth, Western Australia. Participants included five general practitioners and 69 patients aged 15-24 years. Main outcome measures were the General Health Questionnaire (GHQ-12), the Centre for Epidemiological Studies Depression Scale (CES-D) and the Depressive Symptom Inventory-Suicidality Subscale (DSI-SS). RESULTS: One-third of patients scored above the cut-off of the GHQ-12, 31.9% above the cut-off of the CES-D and 20.3% above the cut-off of the DSI-SS. The majority of patients (87.5%) presented with medical complaints. Of these, 26.8%, 23.2% and 21.4% scored above the cut-offs of the GHQ-12, CES-D and DSI-SS, respectively. Patients presenting with psychological complaints (12.5%) were significantly more likely to score above the cut-off of the CES-D. CONCLUSIONS: In this pilot study, patients aged 15-24 presenting to five general practices had relatively high levels of psychological distress and suicidal ideation. Of most concern were those presenting with medical complaints and who also had high levels of unreported psychological distress.

Adolescent↗

PubMed1978

Paralytic shellfish poisoning.

Two cases of paralytic shellfish poisoning after ingestion of mussels occurred in October 1977 in Nova Scotia. The incidence of this type of poisoning is relatively high among persons living on the coast of the Bay of Fundy and the estuary of the St. Lawrence River. The causative organism, Gonyaulax tamarensis, elaborates an endotoxin, saxitoxin, that blocks neuromuscular transmission in the motor axon and muscle membrane while leaving the end-plate unaffected; it also suppresses conduction in the atrioventricular node and inhibits the respiratory centre. The clinical manifestations are unique and include numbness of the lips, tongue and fingertips within minutes of ingestion of the poisoned shellfish, then numbness of the legs, arms and neck, with general muscular incoordination, and finally respiratory distress and muscular paralysis. Treatment is symptomatic and prevention can only occur by public education.

Bivalvia↗

PubMedDate not supplied

Alternating pressure mattresses: comfort and quality of sleep.

Comfort is particularly important for patients with terminal illness where the priority is to maximize quality of life. Equally important is effective pressure area care, as such patients are at high risk of developing pressure sores because of their poor general condition (Bale and Regnard, 1995). The present randomized controlled study set in a hospice focused on the development of methodology for assessing patient comfort and quality of sleep and used this to compare two widely used, alternating air pressure mattresses (the Nimbus II and the Pegasus Airwave). The Nimbus II mattress performed consistently better than the Pegasus Airwave in terms of patient comfort and quality of sleep. Features of the Nimbus II that may explain its better performance include less extreme changes in pressure, lower peak inflation pressures and the ability to automatically vary the pressure to suit the patient's position and weight.

Adult↗