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It has been known for more than one hundred years that an intravenous injection of histamine causes a fall in the blood pressure. [30] The underlying mechanism concerns both vascular hyperpermeability and vasodilation. Histamine binding to endothelial cells causes them to contract, thus increasing vascular leak.
The enzyme histidine decarboxylase (EC 4.1.1.22, HDC) is transcribed on chromosome 15, region q21.1-21.2, and catalyzes the decarboxylation of histidine to form histamine.In mammals, histamine is an important biogenic amine with regulatory roles in neurotransmission, gastric acid secretion and immune response.
Dark chocolate is rich in flavanols, a natural compound that can lower blood pressure, reducing the risk of stroke and heart disease, adds Frances Largeman-Roth, a registered dietitian. She ...
One of the factors believed to cause histamine intolerance is an imbalance between uptake of histamine through the diet and a diminished capacity to metabolize ingested histamine, leading to an increased blood concentration of the amines which may potentially cause adverse effects. The primary cause of histamine intolerance is considered by ...
Hydroxyzine works by blocking the effects of histamine. [9] It is a first-generation antihistamine in the piperazine family of chemicals. [8] [4] Common side effects include sleepiness, headache, and dry mouth. [8] [9] Serious side effects may include QT prolongation. [9] It is unclear if use during pregnancy or breastfeeding is safe. [8]
Antidepressants, high blood pressure medication, antihistamines, and antiandrogens (medications that reduce the production of male hormone levels) are some medications that may cause ED.
Certain antihistamines, like Allegra (fexofenadine) Medications to treat high blood pressure, such as Procardia and Adalat CC (nifedipine) Organ-transplant rejection drugs, including Sandimmune ...
Multiple blood pressure readings (at least two) spaced 1–2 minutes apart should be obtained to ensure accuracy. [92] Ambulatory blood pressure monitoring over 12 to 24 hours is the most accurate method to confirm the diagnosis. [93] An exception to this is those with very high blood pressure readings especially when there is poor organ ...