Serotonergic disfunction seems to be involved in the pathophysiology of substance abuse, and has also an important role in suicidal behavior. Recent studies of the tryptophan hydroxylase 2 showed mild or no association with suicide and alcohol-related suicide. We performed SNP and alcohol analysis on 388 suicide victims and 227 controls. The results showed association between suicide (P(chi(2))

= 0.043) and alcohol-related suicide (P(chi(2)) = 0.021) for SNP Rs1843809. A tendency for association was determined also for polymorphism Rs1386493 (P(chi(2)) = 0.055) and alcohol-related suicide. Data acquired from psychological autopsies in a subsample of suicide victims (n = 79) determined more impulsive behavior (P(chi(2)) = 0.016) and verbal aggressive selleck chemicals behavior (P(chi(2)) = 0.025) in the subgroup with alcohol misuse or dependency. In conclusion, our results suggest implication of polymorphisms in suicide and alcohol-related suicide, but further studies are needed to clarify the interplay among serotonergic

system disfunction, suicide, alcohol dependence, impulsivity and the role of TPH2 enzyme. (C) 2010 Elsevier Ireland Ltd. All rights reserved.”
“Objective: Diastolic subvalvular mitral leaflet tethering by left ventricular remodeling that restricts leaflet opening in the presence of annular size reduction by surgery for ischemic mitral regurgitation potentially causes functional mitral stenosis in the absence of organic leaflet lesions. Exercise, known to worsen systolic www.selleckchem.com/products/Dasatinib.html tethering and ischemic mitral regurgitation, might also dynamically exacerbate such mitral stenosis by increasing Carbohydrate tethering. This study evaluates the mechanism and response of such mitral stenosis to exercise.

Methods: We measured the diastolic

mitral valve area, annular area, and peak and mean transmitral pressure gradient by echocardiography in 20 healthy individuals and 31 patients who underwent surgical annuloplasty for ischemic mitral regurgitation.

Results: Although the mitral valve area and annular area did not significantly differ in healthy individuals (4.7 +/- 0.6 cm(2) vs 5.2 +/- 0.6 cm(2), not significant), mitral valve area was significantly smaller than the annular area in patients after annuloplasty (1.6 +/- 0.2 cm(2) vs 3.3 +/- 0.5 cm(2), P < .01). The mitral valve area was less than 1.5 cm(2) only after the surgery (P < .01) and was significantly correlated with restricted leaflet opening (r(2) = 0.74, P < .001), left ventricular dilatation (r(2) = 0.17, P < .05), and New York Heart Association functional class (P < .05). Exercise stress echocardiography of 12 patients demonstrated dynamic worsening in functional mitral stenosis (mitral valve area: 2.0 +/- 0.5 cm(2) to 1.4 +/- 0.2 cm(2), P < .