Spinal manipulation and mobilisation for back and neck pain.
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Back Pain↗
Biomedical subjects
R S MacDonald
Publications and source records attributed to R S MacDonald.
Cancellation of ventricular artifact on esophageal electrograms using LMS adaptive filtering.
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Electrocardiography↗
Influence of dietary fiber on insulin receptors in rat intestinal mucosa.
This study was designed to determine the effect of dietary carbohydrate and fiber on mucosal insulin receptors, in order to correlate changes in cellular proliferation with hormonal responsiveness. In two protocols insulin binding was significantly affected by the consumption of dietary fiber. Compared to fiber-free, feeding corn bran increased binding in the duodenum 30% and ileum 50% but decreased binding in the jejunum 44%, and feeding guar gum increased binding in the colon 73% but decreased binding in the jejunum 40%. Feeding wheat bran or oat bran increased binding 50% in the small intestine compared to cellulose or fiber-free. Receptor autophosphorylation was 30% higher with fiber-free or wheat bran feeding than cellulose or oat bran. These changes in receptor binding and activity may correlate with altered rates of cell proliferation induced by dietary fiber.
Animals↗
Computer simulation of heart-pacemaker interaction.
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Computer Simulation↗
An open controlled assessment of osteopathic manipulation in nonspecific low-back pain.
An open controlled pilot trial on nonspecific low-back pain sufferers demonstrated responsiveness to osteopathic manipulation of some patients presenting with pain durations of 14 to 28 days. No response was demonstrated in those with shorter episodes at presentation. The advantage to manipulated patients was maximal between 1 and 2 weeks after commencing treatment, but was not discernable after 4 weeks. The demonstration of a similar responsive stratum by other investigators, with both teams totally unaware of each other's work during data collection, suggests a high degree of reliability for this finding.
Activities of Daily Living↗
The effect of three hypolipidemic drugs on catalase activity and peroxisomal and mitochondrial palmitate oxidation in rat cardiac and skeletal muscle.
Catalase activity and peroxisomal and mitochondrial palmitate oxidation have been investigated in cardiac and skeletal muscle from rats fed clofibrate, ciprofibrate or nafenopin in an unrefined diet for different periods of time. Nafenopin was also added to either a high carbohydrate (70% of kilocalories from glucose) or high fat (70% of kilocalories from lard) diet and fed to rats for either 1 or 3 weeks. Catalase activity was elevated in all muscles from rats fed the hypolipidemic drugs. The response of catalase activity in muscle to clofibrate was dose-dependent. The response time of catalase activity was different in individual muscles. Peroxisomal palmitate oxidation was elevated in the heart and soleus muscle from rats fed nafenopin in either the high-carbohydrate or the high-fat diet. There was no change in peroxisomal palmitate oxidation in psoas or extensor digitorum longus muscle from rats fed the drugs. Mitochondrial palmitate oxidation was only slightly increased by nafenopin in the heart and soleus muscles after 3 weeks of nafenopin feeding. The results suggest that the cardiac muscle, like the liver, responds to hypolipidemic drug treatment with an increase in peroxisomal fat oxidation. The skeletal muscle response is less specific and that tissue may not contribute to the hypolipidemic effect of the drugs. The findings also suggest that these drugs do not induce peroxisome proliferation in skeletal muscle.
Animals↗