Cerebral amyloid load determination in a clinical setting: interpretation of amyloid biomarker discordances aided by tau and neurodegeneration measurements

Neurological Sciences - Alzheimer’s disease (AD) diagnosis can be hindered by amyloid biomarkers discordances. We aim to interpret discordances between amyloid positron emission tomography...     

Effect of Vitamin D and Docosahexaenoic Acid Co-Supplementation on Vitamin D Status,Body Composition,and Metabolic Markers in Obese Children: A Randomized,Double Blind,Controlled Study

Obese children are at high risk of developing vitamin D deficiency. Omega-3 polyunsaturated fatty acids and their derivatives might have a beneficial effect on vitamin D status of obese children, due to their anti-inflammatory action, and increasing its absorption. This multicenter, randomized, double-blind controlled study aims to investigate the effect of vitamin D and docosahexaenoic acid (DHA) co-supplementation for six months on vitamin D status, body composition, and metabolic markers of obese children with vitamin D deficiency. A total of 108 children were enrolled and 73 children completed the study: 33 were supplemented with an oral dose of 500 mg of DHA and 1200 IU/day of vitamin D3 and 41 were supplemented with 1200 IU/day of vitamin D3 + wheat germ oil. At the end of the study, more than 50% of the subjects improved their vitamin D status. However, co-supplementation was not more effective than vitamin D plus wheat germ oil. Fat mass percentage was significantly reduced, and body mass index improved in both groups, even if all the subjects were still obese at the end of the study. Children receiving both vitamin D and DHA presented a higher increase of DHA levels that could be relevant to prevent inflammatory-associated complications of obesity, but they had no effect on vitamin D levels.     

Deoxyribonucleic acid damage in human lymphocytes after percutaneous transluminal coronary angioplasty

OBJECTIVES; We investigated the presence of oxidative deoxyribonucleic acid (DNA) damage in the peripheral lymphocytes of patients undergoing percutaneous transluminal coronary angioplasty (PTCA) by using the micronucleus test and comet assay, which are sensitive biomarkers of DNA damage. BACKGROUND; Although it has recognized that ischemia-reperfusion can induce oxidative DNA damage, its occurrence in patients undergoing PTCA has not yet been demonstrated. METHODS: Three groups of patients were enrolled: 30 patients with documented coronary heart disease who underwent elective PTCA (group I); 25 patients who underwent elective coronary angiography for diagnostic purpose (group II); and 27 healthy, age- and gender-matched subjects (group III). For each subject, the frequency of micronucleated binucleated (MNBN) cells, DNA single-strand breaks (SSBs), endonuclease III-sensitive sites, and sites sensitive to formamidopyrimidine glycosylase (FPG) were analyzed before and after diagnostic procedures. RESULTS:The mean basal values of MNBN cells (p = 0.04), DNA-SSBs (p = 0.001), endonuclease III-sensitive sites (p = 0.002), and FPG sites (p < 0.0001) were significantly higher in groups I and II than in group III. A high significant increase of MNBN cell frequency was observed in group I after the PTCA procedure (11.0 +/- 1.3 vs. 19.8 +/- 1.6, p < 0.0001), whereas no significant difference was observed in group II (10.2 +/- 1.3 vs. 12.9 +/- 1.4, p = 0.18). A significant positive correlation was observed between the increase in the MNBN cell rate and total inflation time during PTCA (R = 0.549, p = 0.0017). The levels of DNA-SSBs (11.7 +/- 1.4 vs. 26.5 +/- 3.0, p = 0.0003) and FPG sites (13.8 +/- 1.8 vs. 22.5 +/- 2.4, p = 0.01) were also higher after PTCA. CONCLUSIONS: Our results provide evidence for oxidative DNA damage after PTCA, likely related to ischemia-reperfusion injury.     

Effects of different regimens of iron prophylaxis on maternal iron status and pregnancy outcome: a randomized control trial

Purpose: Iron supplementation is associated with side effects and overload risk. We compared different regimens of iron supplementation on maternal hematological status and pregnancy outcome in a cohort of healthy pregnant women.

Materials and methods: Eighty non-anemic women with a normal singleton pregnancy were recruited at 11–13 weeks and randomized into controls (C; n?=?20) and groups supplemented with ferrous iron 30?mg (FI; n?=?20), liposomal iron 14?mg (Sideral® Pharmanutra, Pisa PI, Italy) (LI14; n?=?20) and liposomal iron 28?mg/daily (LI28; n?=?20) up to 6 weeks post-partum. Longitudinal maternal blood samples for iron markers were collected. Data on birth outcome were recorded. The treatment effect was evaluated using a mixed-effect regression model.

Results: Both LI28 and LI14 groups showed significantly higher hemoglobin and ferritin concentrations compared with controls. Birth weight showed a trend to increase with supplementation, resulting in higher birth weight in the LI28 group compared with controls (3499?±?464.1?g and 3092?±?469.5?g, respectively, p?Conclusions: Our data show the effectiveness of 28?mg and 14?mg LI on maternal anemia prevention, as previously reported with FI 40?mg. LI has similar effects of higher doses of ferrous iron on maternal hematological parameters, thus allowing to reduce iron doses and side effects.     

Sexual and psychological symptoms in the climacteric years

OBJECTIVES: To provide epidemiological data about psychological and sexual functioning during menopausal transition in a large Italian non-clinical sample, and to investigate their correlation with life events. METHODS: The study design was a cross-sectional postal survey of a menopausal sample of women recruited from the General Registry Office in Ferrara's province. The sample was composed of four thousand and seventy-three women; they were sent a questionnaire designed on the basis of the Women's Health Questionnaire (WHQ). Together with the WHQ, the subjects filled out a personal file to define social status, cultural level, family's characteristics, recent menstrual cycles, gynaecological history and operations, drug assumption, life events in the last year, and lifetime depression. RESULTS: One thousand three hundred and forty-five women provided usable questionnaires. Factor analysis resulted in eight clusters: somatic symptoms, depressive symptoms, depressed mood with anxiety symptoms, cognitive difficulties, anxiety, sexual functioning, vasomotor symptoms and sleep problems. Mood and sexual function were impaired through the menopausal transition, with depressive and sexual symptoms being higher in the post-menopausal group compared to the pre-menopausal one. Therefore, the correlation between the two was greater in the pre- and peri-menopausal period. CONCLUSION: Depressive and sexual symptoms presented greater severity in the post-menopausal group. Both clusters of symptoms were strongly associated with life events. The parallel course of the two clusters could be related with a common pathoplastic action of life events, both on sexual symptoms and on depressive symptoms, occurring right at the time that a woman has to face the transition into menopause.