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“administered histamine (50, 100, and 200 nmol) dose- and time-dependently increased MAP and HR and caused an additional rise in extracellular posterior hypothalamic ACh and Ch levels at the most by 102%, as compared to the control saline-treated group.”
“viva The pattern of stimulation of individual phospholipids by histamine (Table 2) is similar to that caused by carbamylcholine under identical conditions (FRIEDEL & SCHANBERG, 1972) in that the labelling of phosphatidyl inositol and phosphatidyl choline are significantly increased 30 min after intracisternal injection.”
“Konzett (1952), on the other hand, observed that histamine had occasionally a stimulating effect and regularly increased the sensitivity of the perfused ganglion to injected acetylcholine, nicotine, choline and potassium chloride.”