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Articles by G. Lippi
Total Records ( 3 ) for G. Lippi
  M. Montagnana , C. Fava , P. M. Nilsson , G. Engstrom , B. Hedblad , G. Lippi , P. Minuz , G. Berglund and O. Melander

Background  To determine if the common Pro12Ala polymorphism (rs1801282) of the peroxisome proliferator-activated receptor (PPARG) gene is associated with the metabolic syndrome (MetS) or with its individual components in middle-aged Swedish individuals.

Methods  MetS was defined according to the National Cholesterol Education Program/Adult Panel III (NCEP/ATP III), the International Diabetes Federation (IDF) and the European Group for the Study of Insulin Resistance (EGIR) criteria in a population-based sample of nearly 5000 subjects participating in the Malmö Diet and Cancer-cardiovascular arm.

Results  Of the subjects included in the analysis, 21.8, 29.4 and 20.4% had MetS according to the NCEP/ATP III, IDF and EGIR (only in subjects without diabetes) definitions, respectively. The Pro12Ala was not associated with MetS or with its individual components. These results were similar when patients with diabetes were excluded. Hypertensive and obese ala-carriers had lower fasting glucose and hypertensive ala-carriers also had lower level triglycerides (P < 0.05).

Conclusions  Our data do not support a major role for the Pro12Ala variant of the PPARG gene in MetS and its individual components. The modest difference in triglyceride and glucose levels, restricted to hypertensive and obese subjects in our cohort, suggests that the polymorphism has a minor effect on glucose and lipid metabolism, particularly in individuals at risk for gluco-metabolic disturbances.

  G. Targher , L. Bertolini , L. Zenari , G. Lippi , I. Pichiri , G. Zoppini , M. Muggeo and G. Arcaro
  Aims  We investigated the association of diabetic retinopathy with the risk of incident cardiovascular disease (CVD) events in a large cohort of Type 2 diabetic adults.

Methods  Our study cohort comprised 2103 Type 2 diabetic outpatients who were free of diagnosed CVD at baseline. Retinal findings were classified based on fundoscopy (by a single ophthalmologist) to categories of no retinopathy, non-proliferative retinopathy and proliferative/laser-treated retinopathy. Outcomes measures were incident CVD events (i.e. non-fatal myocardial infarction, non-fatal ischaemic stroke, coronary revascularization procedures or cardiovascular death).

Results  During approximately 7 years of follow-up, 406 participants subsequently developed incident CVD events, whereas 1697 participants remained free of diagnosed CVD. After adjustment for age, body mass index, waist circumference, smoking, lipids, glycated haemoglobin, diabetes duration and medications use, patients with non-proliferative or proliferative/laser-treated retinopathy had a greater risk (P < 0.001 for all) of incident CVD events than those without retinopathy [hazard ratio 1.61 (95% confidence interval 1.2-2.6) and 3.75 (2.0-7.4) for men, and 1.67 (1.3-2.8) and 3.81 (2.2-7.3) for women, respectively]. After additional adjustment for hypertension and advanced nephropathy (defined as overt proteinuria and/or estimated glomerular filtration rate ≤ 60 ml/min/1.73 m2), the risk of incident CVD remained markedly increased in those with proliferative/laser-treated retinopathy [hazard ratio 2.08 (1.02-3.7) for men and 2.41 (1.05-3.9) for women], but not in those with non-proliferative retinopathy.

Conclusions  Diabetic retinopathy (especially in its more advanced stages) is associated with an increased CVD incidence independent of other known cardiovascular risk factors.

  G. Zoppini , G. Targher , M. Trombetta , G. Lippi and M. Muggeo
  Aims  To assess the association between circulating levels of soluble CD40 ligand (sCD40L), an emerging cardiovascular risk factor, and γ-glutamyltransferase (GGT) activity concentrations in Type 1 diabetic subjects.

Methods  Plasma concentrations of sCD40L and GGT activity, a marker of liver dysfunction, were measured in 54 non-smoking, non-drinking, young Type 1 diabetic patients, who were free of diagnosed cardiovascular disease.

Results  When participants were grouped according to tertiles of GGT, plasma sCD40L concentrations steadily increased across GGT tertiles (P = 0.007 for trend). Similarly, plasma sCD40L concentrations were positively correlated with plasma GGT levels in the whole group of participants (r = 0.532; P < 0.0001). In multivariate linear regression analysis, plasma GGT activity levels were positively associated with sCD40L (standardized beta coefficient = 0.342; P = 0.027) independently of age, gender, diabetes duration, glycated haemoglobin, total cholesterol and systolic blood pressure. Further adjustment for the presence of diabetic retinopathy and microalbuminuria did not appreciably attenuate this association.

Conclusions  Our findings suggest that there is a strong, graded, relationship between plasma GGT activity and sCD40L concentrations in non-smoking, non-drinking, young Type 1 diabetic individuals. This association appears to be independent of numerous confounding factors. Further studies are required to confirm the reproducibility of these results.

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