Observations on the cyclic nucleotide concentrations in human cerebrospinal fluid
| Autor: | Mark S. O'Brien, Daniel Rudman, Alexander S. Mckinney, Joseph H. Patterson, James C. Hoffman |
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| Rok vydání: | 1976 |
| Předmět: |
Adult
medicine.medical_specialty Endocrinology Diabetes and Metabolism Clinical Biochemistry Biochemistry chemistry.chemical_compound Cyclic nucleotide Endocrinology Cerebrospinal fluid Internal medicine medicine Cyclic AMP Pressure Humans Cyclic adenosine monophosphate Child Cyclic guanosine monophosphate Cyclic GMP Melatonin Cerebral atrophy business.industry Biochemistry (medical) Infant Newborn Infant medicine.disease Hydrocephalus chemistry Child Preschool Ventricular pressure Cholinergic Regression Analysis Nervous System Diseases business Pituitary Hormone-Releasing Hormones |
| Zdroj: | The Journal of clinical endocrinology and metabolism. 42(6) |
| ISSN: | 0021-972X |
| Popis: | Previous studies have shown that the concentrations of 3', 5' cyclic adenosine monophosphate (cAMP) and 3', 5' cyclic guanosine monophosphate (cGMP) in cerebrospinal fluid (CSF), brain, or both, are increased by melanotropic peptides and catechol amines, and by cholinergic agents. The present study measured the concentrations of cAMP, cGMP, and melanotropic activity in the CSF of normal patients and in 136 subjects with various neurologic diseases. In normal lumbar CSF, concentrations (ave +/- SD) were: cAMP, 21 +/- 8 mM; cGMP, 2.4 +/- 0.5 mM; melanotropic activity, 17 +/- 6 units/100 ml. Concentrations of cAMP, cGMP, and melanotropic activity did not differ significantly (P is less than .05) from normal in the following categories of adult and pediatric patients: back pain due to vertigo of unknown cause; cerebral atrophy; cerebral vascular disease; and brain tumor subdural hematoma not causing increased ventricular pressure. Nine children with retarded psychomotor development caused by diffuse brain disease (infection, trauma, hemorrhage, degenerative process, long-standing hydrocephalus with thinning of the cerebral mantle) had subnormal levels of cAMP and melanotropic activity. These two variables were significantly correlated in the entire series of CSF samples (r=+0.55, P is less than .005). cGMP was elevated in the ventricular fluid of adult and pediatric patients when the ventricular pressure was abnormally elevated. The nucleotide's level rose as high as 50 X normal when ventricular pressure exceeded 300 mm H2O. The concentration of ventricular cGMP was proportional to that of ventricular pressure (r=+0.76, P is less than .005). The correlation was similar regardless of the type of hydrocephalus (congenital or acquired, communicating or obstructive), the age of the patient, or the nature of the underlying disease. |
| Databáze: | OpenAIRE |
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