Exercise intervention improves macrovascular function in metabolic syndrome (MeS) patients, but few studies have evaluated the effect of exercise on microcirculatory dysfunction, which plays a key ...role in the development of MeS and its correlated organ damage. We carried out this intervention study to evaluate the influence of an aerobic and resistance training on skin microvascular reactivity in MeS patients.
Postocclusive reactive hyperemia (PORH) of the forearm skin was evaluated, by laser-Doppler flowmetry, before and after a 12-week program of aerobic and resistance training in 15 MeS patients referring to our Lipid Metabolism Outpatients Clinic, together with anthropometric, fitness and metabolic parameters; 15 matched MeS patients who did not exercise, served as a control group. The exercise training consisted of 2 sessions/week of aerobic and resistant exercise.
Following exercise program, we observed a significant reduction in body weight, fat mass, fasting blood glucose, serum HbA1c and triglycerides, while HDL-cholesterol significantly increased. The exercise-treated group experienced a significant improvement in the area of hyperemia (AH) after PORH, and in all fitness parameters: VO2max, strength on the pulldown lat machine, chest press, leg press and leg extension. A significant correlation emerged between the increase in AH and the reduction in HbA1c and between increase in AH and strength at the chest press, and at the leg extension.
Our study showed that a short-term combined aerobic-resistance training positively affects microvascular reactivity in MeS patients. This improvement is correlated with the reduction of HbA1c and fitness parameters, and particularly with increased muscle strength at the upper and lower limbs.
To evaluate the feasibility and effectiveness of an intensive, multifactorial cardiovascular risk reduction intervention in a clinic-based setting.
The study was a pragmatic, cluster randomized ...trial, with the diabetes clinic as the unit of randomization. Clinics were randomly assigned to either continue their usual care (n = 5) or to apply an intensive intervention aimed at the optimal control of cardiovascular disease (CVD) risk factors and hyperglycemia (n = 4). To account for clustering, mixed model regression techniques were used to compare differences in CVD risk factors and HbA1c. Analyses were performed both by intent to treat and as treated per protocol.
Nine clinics completed the study; 1,461 patients with type 2 diabetes and no previous cardiovascular events were enrolled. After 2 years, participants in the interventional group had significantly lower BMI, HbA1c, LDL cholesterol, and triglyceride levels and significantly higher HDL cholesterol level than did the usual care group. The proportion of patients reaching the treatment goals was systematically higher in the interventional clinics (35% vs. 24% for LDL cholesterol, P = 0.1299; 93% vs. 82% for HDL cholesterol, P = 0.0005; 80% vs. 64% for triglycerides, P = 0.0002; 39% vs. 22% for HbA1c, P = 0.0259; 13% vs. 5% for blood pressure, P = 0.1638). The analysis as treated per protocol confirmed these findings, showing larger and always significant differences between the study arms for all targets.
A multifactorial intensive intervention in type 2 diabetes is feasible and effective in clinical practice and it is associated with significant and durable improvement in HbA1c and CVD risk profile.
Context: To date, the metabolic effects of the long-term metformin administration in anovulatory patients with polycystic ovary syndrome (PCOS) are known, whereas few data are available on the ...effects of its suspension.
Objective: The objective of the study was to evaluate the effects of metformin suspension on insulin sensitivity in PCOS patients.
Design: This was a prospective, randomized, placebo-controlled study.
Setting: The study was conducted at the University “Magna Graecia” of Catanzaro, Italy.
Patients: Patients included 30 normal-weight anovulatory PCOS women and 10 age- and body mass index-matched healthy controls.
Intervention: PCOS patients were randomized to receive 1700 mg daily metformin (metformin group) or placebo tables (placebo group) for 12 months, whereas no treatment was administered in healthy women (control group).
Main Outcome Measures: Clinical, endocrine, and metabolic profile and clamp insulin sensitivity index were evaluated at study entry and after 6, 12, 18, and 24 months.
Results: At baseline, the clamp insulin sensitivity index resulted significantly different (P < 0.05) in PCOS patients in comparison with healthy controls, without difference between metformin and placebo groups. During treatment, the clamp insulin sensitivity index was significantly improved (P < 0.05) in the metformin group in comparison with baseline and placebo group, without significant differences between the 6- and 12-month assessments. At 6 and 12 months after treatment suspension, in the metformin group, insulin sensitivity index significantly (P < 0.05) worsened in comparison with that observed at baseline and during treatment and with that observed in the placebo and control groups.
Conclusion: In normal-weight anovulatory PCOS patients, long-term metformin administration exerts beneficial effects on peripheral insulin sensitivity. Furthermore, this effect disappears at treatment suspension.
Objective. According to cross-sectional surveys, the prevalence of nontoxic nodular goiter appears to be higher in the adult population. Surgical intervention is indicated for the following: (a) ...progressive goiter growth, (b) compression of organs such as the trachea and esophagus, and (c) significant aesthetic disfigurement. Ultrasound-guided laser photocoagulation for the treatment of benign thyroid nodules is a viable alternative to traditional surgery. However, studies that have appeared in literature since the introduction of ultrasound-guided laser photocoagulation for the treatment of benign thyroid nodules report contradictory data concerning the energy required for nodule ablation. The aim of the present trial was to evaluate retrospectively the efficacy of percutaneous laser thermal ablation in 2 groups of patients, one treated with low, and the other with high, total amount of energy. Design. Forty euthyroid patients were treated with 1 session of percutaneous laser photocoagulation treatment at low (median = 71 J/mL; 20 patients) and high (median = 578 J/mL; 20 patients) energy. The volume of the nodules was measured by the same investigator, blinded for treatment, using the ellipsoid formula before treatment, at 2, 4, 8, and 30 weeks, and every 6 months for 3 years thereafter. Results. Thyroid nodule ablation is effective over time only if a sufficient amount of energy (>400-500 J/mL for the nodular tissue to be treated) is given, although it incurs proportionate side effects. Conclusions. Percutaneous laser thermal ablation is a viable alternative to traditional surgery for the treatment of benign nodular thyroid disease only if a sufficient amount of energy is delivered.
The contribution of dietary amino acids and endogenous hyperinsulinemia to prandial protein anabolism still has not been established. To this end, leucine estimates (1-14Cleucine infusion, plasma ...alpha-ketoisocaproic acid KIC specific activity SA as precursor pool SA) of whole-body protein kinetics and fractional secretory rates (FSRs) of albumin, fibrinogen, antithrombin III, and immunoglobulin G (IgG) were measured in three groups of healthy volunteers during intragastric infusion of water (controls, n = 5), liquid glucose-lipid-amino acid (AA) meal (meal+AA, n = 7), or isocaloric glucose-lipid meal (meal-AA, n = 7) that induced the same insulin response as the meal+AA. The results of this study demonstrate that 1) by increasing (P < 0.01) whole-body protein synthesis and decreasing (P < 0.01) proteolysis, dietary amino acids account for the largest part (approximately 90%) of postprandial protein anabolism; 2) the ingestion of an isocaloric meal deprived of amino acids exerts a modest protein anabolic effect (10% of postprandial protein anabolism) by decreasing amino acid oxidation and increasing (P < 0.01) albumin synthesis; 3) albumin FSR is increased (approximately 20%) by postprandial hyperinsulinemia (meal-AA) and additionally increased (approximately 50%) by amino acid intake (meal+AA); 4) IgG FSR is stimulated (approximately 40%) by amino acids, not by insulin; and 5) fibrinogen and antithrombin III FSR are not regulated by amino acids or insulin.
The aim of the present study was to investigate the maternal and paternal specific contributions on the associations between family socioeconomic status, parental anthropometric factors, parental ...alliance, and family functioning. These were assessed separately for mothers and fathers, by means of a case-control study with families of Italian youths with and without overweight/obesity.
Ninety families with children aged 11 to 16 years (mean = 13.27 years; SD = 1.5) participated in the study. Half of the families included children with overweight/obesity (n = 45). The body mass indices (BMIs) of youths and parents were measured and the former transformed in BMI z-scores. The parents completed the Parenting Alliance Measure and the Family Assessment Measure Version III, General Scale.
Higher levels of dysfunction in parental alliance and family functioning of the mothers and fathers of the overweight/obese group were found. Socioeconomic status did not contribute significantly to the prediction of overweight and obesity in youth. Both maternal and paternal BMIs were positively associated with youth overweight/obesity. The degrees of parental alliance perceived by both mothers (odds ratio OR, 81; 95% confidence interval CI, 0.72-0.90) and fathers (OR, 89; 95% CI, 0.81-0.98) predicted child's weight status. The perception of poor parental and familial functioning by both parents contributed to the prediction of overweight and obesity in youth (mother: OR, 1.06; 95% CI, 1.02-1.10; father: OR, 1.06; 95% CI, 1.01-1.11).
The results support a strong effect of parental and family functioning on a youth's overweight/obesity also from the father's perspective. The importance of considering the father's perspective is discussed.
Summary Objective Obesity has a great impact on cardiovascular morbidity and mortality, the treatment of this pathological state is important given the significant health consequences. Lifestyle and ...behaviour changes play a significant role in weight management. The purpose of this study was to investigate the impact of an intensive multidisciplinary lifestyle intervention on well-known atherogenic factors in a group of overweight and obese subjects. Methods A total of 44 people with overweight/obesity underwent a lifestyle intervention based on nutritional education, psychological support and a 3-month exercise training program with a frequency of twice a week. Several anthropometric and biochemical parameters were measured before and after the lifestyle intervention. Results Lifestyle intervention led to a significant reduction in metabolic profile including body mass index (BMI), waist circumference, systolic and diastolic blood pressure, plasma glucose, and plasma triglycerides. These reductions were also accompanied by a significant increase in maximal oxygen consumption and muscle strength. Furthermore, paraoxonase and lactonase activities and the concentration of Apoliproteins A1 (APO A1) were significantly increased and the serum levels of oxLDL reduced without any changes in the circulating levels of LDL and HDL. Conclusion In conclusion, our study suggests that an intensive lifestyle intervention in obese subjects promotes a series of beneficial antiatherogenic changes which included increased enzyme activites of paraoxonase and lactonase, concentration of Apoliproteins A1 and decreased circulating levels of oxLDL.
The current study investigates the effects of a multidisciplinary lifestyle intervention for obesity on Health Related Quality of Life (HRQoL). In this study, 92 adults with obesity were weighed and ...completed the Short Form Health Survey (SF–36) and the Center for Epidemiologic Studies Depression Scale (CES–D) at the baseline and at the end of a 3-month intervention. Repeated measures analysis of variance (ANOVA), a series of hierarchical regressions, and the statistical mediation analysis of Baron and Kenny were conducted. (a) Over 3 months, changes in weight and the mental and physical scales of the SF–36 and depression were all significant. (b) The results indicate a significant mediation of changes in depression scores for the association between weight loss and enhancement on the General Health scale of the SF–36. Improvements to HRQoL from a multidisciplinary lifestyle intervention seem to affect both the physical and mental components of the SF–36 score and to reduce depression, contributing to enhanced self-perceptions of well-being.
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