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Träfflista för sökning "WFRF:(Petridou Eleni Th.) srt2:(2010-2014)"

Sökning: WFRF:(Petridou Eleni Th.) > (2010-2014)

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2.
  • Mavromatis, Ioannis D., et al. (författare)
  • Validity of intraoperative gross examination of myometrial invasion in patients with endometrial cancer : a meta-analysis
  • 2012
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - 0001-6349 .- 1600-0412. ; 91:7, s. 779-793
  • Forskningsöversikt (refereegranskat)abstract
    • <p>Objective. The current recommended endometrial cancer surgical treatment is abdominal extrafascial total hysterectomy with bilateral salpingo-oophorectomy followed by pelvic lymphadenectomy if &gt;50% myometrial invasion is estimated by intraoperative gross examination (IGE). This meta-analysis aims to quantify evidence regarding the validity/predictive value of IGE staging compared with final histology. Design. Meta-analysis of studies published until October 2011. Setting. Systematic search, according to PRISMA guidelines, of the six major medical literature databases Medline, Scopus, EMBASE, Google Scholar, Ovid, Cochrane. Population. Sixteen eligible studies including 2567 endometrial cancer patients. Methods. Pooled sensitivity/specificity, accuracy, negative/positive predictive value (NPV/PPV) and diagnostic odds ratio (DOR) of IGE were calculated and the summary receiver operator characteristic (sROC) curve was constructed. A meta-regression analysis was used to explore the role of potential modifiers of sensitivity and specificity. Main outcome measures. Pooled diagnostic measures of IGE indices. Results. Sixteen studies (15 retrospective, one prospective) meeting the inclusion criteria were qualitatively analyzed. Pooled IGE estimates were: sensitivity = 0.75 (95%CI: 0.720.78), specificity = 0.92 (95%CI 0.900.94), accuracy = 0.87 (95%CI 0.860.88), NPV = 0.89 (95%CI 0.870.92), PPV = 0.80 (95%CI 0.760.84) and DOR = 36.9 (95%CI 28.747.4). No significant modifiers were identified for sensitivity or specificity. Conclusions. The synthesized measures presented here for the first time showed that accuracy, sensitivity and specificity of IGE were 87, 75 and 92%, respectively, which indicates that IGE is useful for estimating depth of myometrial invasion and staging of endometrial cancer in clinical practice. The degree to which the relatively low values of some of its performance indicators could be improved remains to be elucidated in order for the values to be comparable with those from frozen section biopsies.</p>
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3.
  • Michelakos, Theodoros, et al. (författare)
  • Serum Folate and B12 Levels in Association With Cognitive Impairment Among Seniors : Results From the VELESTINO Study in Greece and Meta-Analysis
  • 2013
  • Ingår i: Journal of Aging and Health. - 0898-2643 .- 1552-6887. ; 25:4, s. 589-616
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Objective: To summarize existing evidence on the effect of serum folate and vitamin B12 levels on cognitive impairment among elders via a meta-analysis, also including unpublished data from a cross-sectional study of seniors ( &gt; 65 years) residing in Velestino, Greece. Method: Serum measurements and Mini-Mental State Examination (MMSE) assessments were available for 593 Velestinians. In addition, 12 studies availing data on folate blood levels (N = 9,747) and 9 on B12 (N = 8,122) were identified following a search algorithm; pooled effect estimates were derived. Results: Cognitive impairment (MMSE &lt; 24) among Velestenians was associated with lower education level in both genders; decreased social activity, depressive symptoms and low folate levels in males; older age in females. Meta-analyses showed an adverse effect of low-folate levels on cognition (OR: 1.66, 95% CI: 1.40-1.96); B12 was nonsignificantly associated (OR: 1.11, 95% CI: 0.88-1.40). Discussion: Low folate levels are associated with cognitive impairment of seniors; underlying pathophysiological mechanisms should be further explored.</p>
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4.
  • Petridou, Eleni Th., et al. (författare)
  • In vitro fertilization and risk of childhood leukemia in Greece and Sweden
  • 2012
  • Ingår i: Pediatric Blood & Cancer. - 1545-5009 .- 1545-5017. ; 58:6, s. 930-936
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Background Cancer risk in children born after in vitro fertilization (IVF) remains largely unknown. We aimed to investigate risk of leukemia and lymphoma following IVF using two nationwide datasets. Methods. The hospital-based case-control study in Greece derived from the National Registry for Childhood Hematological Malignancies (1996-2008, 814 leukemia and 277 lymphoma incident cases with their 1: 1 matched controls). The Swedish casecontrol study was nested in the Swedish Medical Birth Register (MBR) (1995-2007, 520 leukemia and 71 lymphoma cases with their 5,200 and 710 matched controls) with ascertainment of incident cancer cases in the National Cancer Register. Study-specific and combined odds ratios (OR) were estimated using conditional logistic regression, with adjustment for possible risk factors. Results. Nationwide studies pointed to similar size excess risk of leukemia following IVF, but to a null association between IVF and lymphoma. The proportion of leukemia cases conceived through IVF was 3% in Greece and 2.7% in Sweden; prevalence of IVF in matched controls was 1.8% and 1.6%, respectively. In combined multivariable analyses, the increased risk of leukemia was confined to age below 3.8 years (OR 2.21; 95% confidence interval, CI: 1.27-3.85) and to acute lymphoblastic leukemia (ALL) (OR 1.77; 95% CI: 1.062.95) with no sufficient evidence of excess risk for other leukemias (OR 1.34; 95% CI: 0.38-4.69). Following IVF, OR for ALL was 2.58 (95% CI: 1.37-4.84) before age 3.8 and 4.29 (95% CI: 1.4912.37) before age 2 years. Conclusions. IVF seems to be associated with increased risk of early onset ALL in the offspring. </p>
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5.
  • Sergentanis, Theodoros N., et al. (författare)
  • IVF and breast cancer : a systematic review and meta-analysis
  • 2014
  • Ingår i: Human Reproduction Update. - 1355-4786 .- 1460-2369. ; 20:1, s. 106-123
  • Forskningsöversikt (refereegranskat)abstract
    • <p><strong>BACKGROUND</strong></p><p>The effects of controlled ovarian hyperstimulation (COH) for IVF in terms of breast cancer risk remain controversial, despite the hormone-dependent nature of the latter.</p><p><strong>METHODS</strong></p><p>Eligible studies up to 15 February 2013 were identified and pooled effect estimates for relative risk (RR) were calculated separately for the investigations using the general population and those using infertile women, as a reference group. Fixed- or random-effects models were implemented and subgroup analyses were performed, as appropriate.</p><p><strong>RESULTS</strong></p><p>Eight cohort studies were synthesized, yielding a total cohort size of 1 554 332 women among whom 14 961 incident breast cancer cases occurred, encompassing 576 incident breast cancer cases among women exposed to IVF. No significant association between IVF and breast cancer was observed either in the group of studies treating the general population (RR = 0.91, 95% confidence interval (CI): 0.74–1.11) or infertile women (RR = 1.02, 95% CI: 0.88–1.18), as a reference group. Of note were the marginal associations, protective for pregnant and/or parous women after IVF (pooled effect estimate = 0.86, 95% CI: 0.73–1.01) and adverse for women &lt;30 years at first IVF treatment (pooled effect estimate = 1.64, 95% CI: 0.96–2.80).</p><p><strong>CONCLUSIONS</strong></p><p>At present, COH for IVF does not seem to impart increased breast cancer risk. Longer follow-up periods, comparisons versus infertile women, subgroup analyses aiming to trace vulnerable subgroups, adjustment for various confounders and larger informative data sets are needed before conclusive statements for the safety of the procedure are reached.</p>
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6.
  • Siristatidis, Charalampos, et al. (författare)
  • Controlled ovarian hyperstimulation for IVF : impact on ovarian, endometrial and cervical cancer-a systematic review and meta-analysis
  • 2013
  • Ingår i: Human Reproduction Update. - 1355-4786 .- 1460-2369. ; 19:2, s. 105-123
  • Forskningsöversikt (refereegranskat)abstract
    • <p>BACKGROUND: In response to the ongoing debate on the long-term effects of assisted reproduction technologies, such as IVF, we systematically reviewed and meta-analyzed available evidence on the association between controlled ovarian hyperstimulation for IVF and risk of ovarian, endometrial and cervical cancer. METHODS: Eligible studies were identified and pooled effect estimates for relative risk (RR) were calculated by cancer type among two reference groups (general population or infertile women), through fixed-or random-effects models as appropriate. RESULTS: Nine cohort studies were synthesized, corresponding to a total size of 109 969 women exposed to IVF, among whom 76 incident cases of ovarian, 18 of endometrial and 207 cases of cervical cancer were studied. The synthesis of studies with general population as the reference group pointed to a statistically significant positive association between IVF and increased risk for ovarian (RR = 1.50, 95% confidence interval (CI): 1.17-1.92) and endometrial (RR = 2.04, 95% CI: 1.22-3.43), but not cervical (RR = 0.86, 95% CI: 0.49-1.49)cancers. On the contrary, when infertile women were used as the reference group, no significant associations with ovarian, endometrial or cervical cancer types were noted (RR=1.26, 95% CI: 0.62-2.55 RR=0.45, 95% CI: 0.18-1.14 and RR= 5.70, 95% CI: 0.28-117.20, respectively). CONCLUSIONS: IVF does not seem to be associated with elevated cervical cancer risk, nor with ovarian or endometrial cancer when the confounding effect of infertility was neutralized in studies allowing such comparisons. Of note, only one study provided follow-up longer than 10 years for the group exposed to IVF. Future cohort studies should preferably use infertile women as the reference group, rely on IVF-registered valid exposure data, adjust for a variety of meaningful confounders and adopt relatively longer follow-up periods before sound conclusions are drawn.</p>
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