2017
DOI: 10.1111/fcp.12292
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Rifampicin reverses nicardipine effect inducing uncontrolled essential hypertension

Abstract: Dihydropyridine calcium-channel blockers are a known substrate for the cytochrome P450 isoform 3A4. Rifampicin, an antitubercular agent, is one of the most potent inducers of hepatic and intestinal CYP3A4 thus increasing dihydropyridine metabolism. We report a case of a 67-year-old hypertensive female treated with a four-drug antihypertensive regimen including a dihydropyridine (nicardipine 50 mg bid), who was admitted for septic arthritis of the knee requiring antibiotic treatment with teicoplanin 400 mg od a… Show more

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Cited by 10 publications
(11 citation statements)
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“…Nifedipine may possibly meet the requirements of being a selective antagonist by exerting its best effect on the vessels compared to the myocardium, and also has no (or very little) effect on nodal tissue or atrioventricular conduction; The problem is that its selectivity for vessels is associated with rapid uptake and plasma distribution, as well as a rapid rate of fixation to its "receptor" in the complex of the calcium ion channel, for this reason produces rapid peripheral vasodilation. As a consequence, the autonomic nervous system is stimulated, determining a rapid and significant increase of the heart rate, which forces to concomitant treatment with β-blocker or a preparation of prolonged release [24][25][26][27][28][29].…”
Section: Mechanism Of Actionmentioning
confidence: 99%
“…Nifedipine may possibly meet the requirements of being a selective antagonist by exerting its best effect on the vessels compared to the myocardium, and also has no (or very little) effect on nodal tissue or atrioventricular conduction; The problem is that its selectivity for vessels is associated with rapid uptake and plasma distribution, as well as a rapid rate of fixation to its "receptor" in the complex of the calcium ion channel, for this reason produces rapid peripheral vasodilation. As a consequence, the autonomic nervous system is stimulated, determining a rapid and significant increase of the heart rate, which forces to concomitant treatment with β-blocker or a preparation of prolonged release [24][25][26][27][28][29].…”
Section: Mechanism Of Actionmentioning
confidence: 99%
“…She had a 6year history of essential hypertension that had been well controlled with amlodipine 5 mg/day and valsartan 80 mg/day. Fourteen days later, her blood pressure became uncontrolled at 163/ 77 mm Hg and surged to 200/100 mm Hg on day 16. Amlodipine was increased to 5 mg twice/day, valsartan was changed to losartan 50 mg-hydrochlorothiazide 12.5 mg/day, and several doses of sublingual nifedipine 10 mg and captopril 12.5 mg were given for 286 PHARMACOTHERAPY Volume 40, Number 4, 2020 immediate blood pressure control.…”
Section: Case Reportmentioning
confidence: 99%
“…These interactions have been particularly problematic with the concurrent use of rifampin and antihypertensive drugs. Many case reports documented that blood pressure in these patients was more difficult to control, [4][5][6][7][8][9][10][11][12][13][14][15][16] and most of the drugs used were calcium channel blockers (CCBs). However, rifampin can also affect the function of drug transporters because it is an inhibitor of organic anion transporter polypeptides (OATPs) and P-glycoprotein (P-gp), as well as an inducer of P-gp.…”
mentioning
confidence: 99%
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“…Rifampin has been shown to reduce the bioavailability of nifedipine , most likely by mediating its metabolism in the gut wall . Other studies have also shown that coadministration of rifampin ameliorates the antihypertensive effects of calcium‐channel blockers including benidipine, amlodipine, nifedipine, and nisoldipine, leading to adverse events . Enantioselectivity of a drug has been addressed in relation to pharmacokinetics, pharmacological activity and safety.…”
Section: Introductionmentioning
confidence: 99%