Our study shows for the first time that consumption of dark chocolate acutely decreases wave reflections, that it does not affect aortic stiffness, and that it may exert a beneficial effect on endothelial function in healthy adults. Chocolate consumption may exert a protective effect on the cardiovascular system; further studies are warranted to assess any long-term effects.

Objective: To assess the association between endogenous sex hormones and risk factors for atherosclerosis in healthy postmenopausal women. Design: Cross-sectional study in a university menopause clinic. Methods: Serum sex hormones and lipid-lipoprotein profile, arterial pressure, homocysteine and insulin resistance, measured by the homeostasis model assessment of insulin resistance (HOMA-IR), were assessed in 598 healthy postmenopausal women not on hormone therapy. Results: Compared with women in the lowest testosterone quartile (Q), women in the highest testosterone quartile had higher total cholesterol (Q1: 225.2G41.3 vs Q4: 246.2G38.4 mg/dl, P!0.01), low-density lipoprotein (LDL)-cholesterol (Q1: 146.9G37.2 vs Q4: 171.8G35.3 mg/dl, P!0.001), atherogenic index of plasma (AIP) (Q1: -0.224G0.238 vs Q4: -0.087G0.254, P!0.01), apolipoprotein B (ApoB) (Q1: 100.7G23.1 vs Q4: 113.9G23.8 mg/dl, P!0.001) and higher highdensity lipoprotein (HDL)-cholesterol (Q1: 60.7G14.5 vs Q4: 52.9G13.0 mg/dl, P!0.01). Accordingly, women in the highest free androgen index (FAI) quartile had higher AIP (Q1: -0.232G0.254 vs Q4: -0.078G0.243, P!0.001) and ApoB (Q1: 102.4G25.5 vs Q4: 114.2G 25.8 mg/dl, P!0.01) and lower HDL-cholesterol (Q1: 62.0G15.7 vs Q4: 51.9G11.6 mg/dl, P!0.001) and apolipoprotein A (Q1: 159.6G25.6 vs Q4: 147.9G24.1 mg/dl, P!0.01) compared with women in the lowest FAI quartile. These differences remained significant after adjustment for age, body mass index (BMI), insulin resistance and social habits. The free estrogen index (FEI) exhibited similar associations to the FAI. HOMA-IR showed an independent positive association with total testosterone (Q1: 2.00G1.36 vs Q4: 2.66G1.60, P!0.01), FAI (Q1: 1.70G1.12 vs Q4: 3.04G1.66, P!0.001) and FEI (Q1: 1.70G0.91 vs Q4: 3.08G1.77, P!0.001). Conclusions: Increased androgenicity in healthy postmenopausal women is associated with an unfavorable cardiovascular risk profile. High endogenous estradiol is related to a pro-atherogenic lipid profile, an association which may, in part, be mediated by insulin resistance. 154 907-916 European Journal of Endocrinology

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This study was designed to test the hypothesis that plasma concentrations of matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9), two enzymes that share similar substrate specificity (collagen type IV and V), possibly related to vascular remodelling, are altered in essential hypertension. The second aim of the study was to assess whether chronic antihypertensive treatment with the calcium channel blocker amlodipine would normalize these alterations. To test this hypothesis, we measured plasma concentrations of active MMP-2 and MMP-9 in 42 patients with never-treated essential hypertension and in 25 normotensive control subjects. Measurements were repeated after 6 months of treatment with the calcium channel blocker amlodipine. Baseline values of MMP-2 and MMP-9 were decreased (P ¼ 0.01 and 0.002, respectively) in hypertensive patients compared with normotensives. Hypertensive patients with systemic vascular resistances o1440 dyn s/cm 5 exhibited higher values of MMP-2 (P ¼ 0.005) and MMP-9 (P ¼ 0.001) than hypertensive patients with systemic vascular resistances 41440 dyn s/cm 5 . Treated patients attained a nonsignificant increase in MMP-2 plasma concentrations, but a significant increase in MMP-9 plasma concentrations (P ¼ 0.01) compared to respective values before treatment. In conclusion, these findings suggest that plasma concentrations of active MMP-2 and MMP-9, mainly related to vascular extracellular matrix metabolism, are depressed in patients with essential hypertension. A 6 month treatment with amlodipine can normalize MMP-9 but not MMP-2 plasma concentrations. The hypothesis that antihypertensive treatment may modulate collagen metabolism remains to be determined by further studies.

Aim. To evaluate maternal TNF-alpha and IL-6 plasma levels in normotensive pregnant women, women with preeclampsia, and to examine the temporal changes in their levels from theantepartum to the postpartum period correlated with the regression of preeclampsia. Method. A prospective study was performed in the 2nd Department of Obstetrics and Gynecology, University of Athens. Blood samples were obtained: (1) antepartum at the time of clinical diagnosis of the syndrome, 2. 12-14 weeks postpartum. Results. No statistically significant differences were found in IL-6 levels, whereas a difference was found in TNF-alpha levels between preeclamptic and controls in antepartum period (0.80 pg/ml versus 0.60 pg/ml, P : .04). Long after delivery, TNF-alpha levels were significantly higher in preeclamptic compared to normotensive controls (0.86 pg/ml versus 0.60 pg/ml, P : .004). No difference was observed in TNF-alpha before and after delivery in both groups. No difference was noticed in IL-6 levels in women of normotensive group long after delivery compared to that before delivery. Long after delivery IL-6 levels were statistically significant higher in preeclamptic women compared to normal controls (3.53 ± 0.52 pg/ml versus 1.69 ± 0.48 pg/ml, P : .02). Conclusion. Preeclamptic women remain under a status of increased inflammatory stress up to 12-14 weeks postpartum despite the fact that all the other signs of preeclampsia are resolved.

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Neurotrophins (NTs), nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), NT-3, and NT-4 are of major importance in prenatal and postnatal brain development, due to their neuroprotective action. Developmental changes alter the neuronal responsiveness to certain NTs, which subsequently are variously expressed, to properly balance their action. The following study aimed at examining the pattern of perinatal changes of the four NTs--NGF, BDNF, NT-3, and NT-4 in 30 appropriate for gestational age (AGA) full-term fetuses and neonates by determining their circulating levels at characteristic time points. This study show a gradual decrease of circulating levels of the NTs, NT-3 and NT-4 from umbilical cord (UC) to neonates day 4 (N4), while circulating levels of NGF and BDNF present the opposite pattern: an increase from UC to N4. These patterns of perinatal changes differ according to their impact on the process of neuronal development and their reaction to perinatal stress. NT3 and NT4 have been documented to act at early stages of neuronal development and to decrease after hypoxia-ischemia, while NGF and BDNF to increase. Further studies should investigate these patterns in premature or full-term infants, presenting various pathological conditions in the perinatal period.