OBSERVATIONS IN EXPERIMENTAL MAGNESIUM DEPLETION*

Observations in experimental magnesium depletion.

Experimental Magnesium Depletion **†

I have both coveted and feared this opportunity to deliver the John P. Peters Lecture. Coveted it since, as a student of his, I wish to do him honor; and feared it since, as a student of his, I know I will not satisfy his requirements for excellence. Dr. Peters eschewed long introductions to scientific presentations and referred disparagingly to the early paragraphs as mere "throatclearing." In...

Normal urine concentrating ability in magnesium depletion.

1. We studied urine concentrating ability in ten magnesium-depleted puppies and compared the results with those of match-fed, littermate controls. 2. The experimental puppies became hypomagnesaemic and hypocalcaemic without evidence of potassium depletion. After 24 h of food and water deprivation, urine osmolality increased to 1350k 340 mosm/kg of water. This value did not differ from that of c...

Headache due to photosensitive magnesium depletion.

Clinical and paraclinical data (visual stress tests, electroencephalographic and cerebrovascular photic driving, visual evoked potentials) demonstrate that the concept of photosensitive headache is fully justified. The interictal hallmark of photosensitive cephalalgic patients is potentiation (or sensitization) instead of habituation. The aetiopathogenic mechanisms of photosensitive headache as...

Some observations on magnesium in cerebrospinal fluid.

Investigation of 67 patients with neurological disorders (excluding meningitis) showed a mean level of Mg in cerebrospinal fluid of 1.93 +/- 0.03 mEq./l. These figures are significantly lower than earlier figures published in the literature. Patients with polyradiculo-neuritis do not show the fall in cerebrospinal fluid Mg levels reported in cases of infective meningitis. The level of Mg in cer...