PMID- 21614177 OWN - NLM STAT- MEDLINE DCOM- 20150629 LR - 20240510 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 11 IP - 12 DP - 2010 TI - 3,4-Methylenedioxymethamphetamine alters left ventricular function and activates nuclear factor-Kappa B (NF-kappaB) in a time and dose dependent manner. PG - 4843-63 LID - 10.3390/ijms11124743 [doi] AB - 3,4-Methylenedioxymethamphetamine (MDMA) is an illicit psychoactive drug with cardiovascular effects that have not been fully described. In the current study, we observed the effects of acute MDMA on rabbit left ventricular function. We also observed the effects of MDMA on nuclear factor-kappa B (NF-kappaB) activity in cultured rat ventricular myocytes (H9c2). In the rabbit, MDMA (2 mg/kg) alone caused a significant increase in heart rate and a significant decrease in the duration of the cardiac cycle. Inhibition of nitric oxide synthase (NOS) by pretreatment with L-NAME (10 mg/kg) alone caused significant dysfunction in heart rate, systolic pressure, diastolic pressure, duration of relaxation, duration of cardiac cycle, and mean left ventricular pressure. Pretreatment with L-NAME followed by treatment with MDMA caused significant dysfunction in additional parameters that were not abnormal upon exposure to either compound in isolation: duration of contraction, inotropy, and pulse pressure. Exposure to 1.0 mM MDMA for 6 h or 2.0 muM MDMA for 12 h caused increased nuclear localization of NF-kappaB in cultured H9c2 cells. The current results suggest that MDMA is acutely detrimental to heart function and that an intact cardiovascular NOS system is important to help mitigate early sequelae in some functional parameters. The delayed timing of NF-kappaB activation suggests that this factor may be relevant to MDMA induced cardiomyopathy of later onset. FAU - Tiangco, David A AU - Tiangco DA AD - Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA. FAU - Halcomb, Sapna AU - Halcomb S FAU - Lattanzio, Frank A Jr AU - Lattanzio FA Jr FAU - Hargrave, Barbara Y AU - Hargrave BY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101126 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Central Nervous System Stimulants) RN - 0 (Enzyme Inhibitors) RN - 0 (NF-kappa B) RN - 31C4KY9ESH (Nitric Oxide) RN - 44RAL3456C (Methamphetamine) RN - EC 1.14.13.39 (Nitric Oxide Synthase) RN - L4I4B1R01F (methylone) RN - V55S2QJN2X (NG-Nitroarginine Methyl Ester) SB - IM MH - Animals MH - Cell Line MH - Central Nervous System Stimulants/*pharmacology MH - Dose-Response Relationship, Drug MH - Enzyme Inhibitors/pharmacology MH - Methamphetamine/*analogs & derivatives/pharmacology MH - Myocytes, Cardiac/*metabolism/pathology MH - NF-kappa B/*metabolism MH - NG-Nitroarginine Methyl Ester/pharmacology MH - Nitric Oxide/metabolism MH - Nitric Oxide Synthase/antagonists & inhibitors/metabolism MH - Rabbits MH - Rats MH - Time Factors MH - Ventricular Function, Left/*drug effects PMC - PMC3100831 OTO - NOTNLM OT - H9c2 OT - MDMA OT - NF-kB OT - cardiac myocytes OT - ecstasy OT - iNOS OT - nuclear OT - rabbit EDAT- 2010/01/01 00:00 MHDA- 2010/01/01 00:01 PMCR- 2010/01/01 CRDT- 2011/05/27 06:00 PHST- 2010/10/13 00:00 [received] PHST- 2010/11/04 00:00 [revised] PHST- 2010/11/08 00:00 [accepted] PHST- 2011/05/27 06:00 [entrez] PHST- 2010/01/01 00:00 [pubmed] PHST- 2010/01/01 00:01 [medline] PHST- 2010/01/01 00:00 [pmc-release] AID - ijms11124743 [pii] AID - ijms-11-04843 [pii] AID - 10.3390/ijms11124743 [doi] PST - ppublish SO - Int J Mol Sci. 2010;11(12):4843-63. doi: 10.3390/ijms11124743. Epub 2010 Nov 26.