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Biomedical subjects

E Mannucci

Publications and source records attributed to E Mannucci.

At least 37 records · Page 2Linked to original sources
PubMed2003

Fasting plasma glucose and glycated haemoglobin in the screening of diabetes and impaired glucose tolerance.

The use of fasting plasma glucose (FPG) only has been proposed for the screening and diagnosis of diabetes, but its sensitivity has been reported to be unsatisfactory. The use of HbA1C, alone or combined with FPG, has been suggested for the screening of diabetes and impaired glucose tolerance (IGT). In a sample of 1215 adult subjects without previously known diabetes, we assessed the sensitivity and specificity of FPG and HbA1C in diagnosing diabetes and IGT, determined by oral glucose tolerance test (OGTT). All lean diabetic patients, and 85% of overweight and obese diabetic individuals, had FPG > or =7 mmol/l. FPG >6.1 mmol/l had a sensitivity of 98.8% and a specificity of 32.9%; HbA1C had a lower specificity and sensitivity for the screening of diabetes. A screening strategy for diabetes based on FPG, with OGTT in all overweight subjects with FPG >6.1 mmol/l, is suggested. Neither FPG nor HbA1C is effective in the screening of IGT; although combined FPG and HbA1C could be useful for case finding, screening for IGT with OGTT is advisable in all subjects at high risk.

Adult↗
PubMed2003

Structured interview on erectile dysfunction (SIEDY): a new, multidimensional instrument for quantification of pathogenetic issues on erectile dysfunction.

The aim of the present study is the definition of a brief structured interview (SI) providing scores useful for identification and quantification of pathogenetic factors of erectile dysfunction (ED). A SI was developed and applied to a consecutive series of 320 ED patients. A 13-item SI, with three-factor analysis-derived scales, was identified and applied for validation to an independent consecutive series of 194 ED patients. PGE(1) (10 microg) intracavernosal injection, penile duplex ultrasound (PDU), blood hormones, PSA, glycemia, and lipids were used for the assessment of an organic component (OC), and Middlesex Hospital Questionnaire (MHQ) modified for psychological disturbances. Scale 1, dealing with OC, showed a positive correlation with age, BMI, blood pressure, glycemia, and inverse correlation, with testosterone, PGE(1) and several parameters derived from PDU. Scale 2, related to partner's relationship, was not correlated with organic parameters. Scale 3, which measures psychopathological traits was correlated with MHQ scales. Scale 1 (>3) had a sensitivity of 67.9% and a specificity of 67.6% for OC. SIEDY((c)) provides information on ED pathogenesis and might assist physicians in diagnostic and therapeutic choices.

Adult↗
PubMed2003

Comparison among different insulin sensitivity indices in obese patients.

AIMS: Recently, several indices have been proposed for the measurement of insulin sensitivity (IS). We set out to make a comparison between fasting insulin, and different IS indices in obese subjects. PATIENTS AND METHODS: Fasting and post load (75 g) glucose and insulin were measured in a consecutive series of 767 (626 F, 141 M) obese (body mass index > 30 kg/m(2)) out-patients, with no known history of diabetes (DM). Mean (+/- sd) age was 46.7 +/- 13.8 years in females and 45.6 +/- 14.3 years in males. Indices of IS based on fasting homeostasis assessment model (HOMA) and post-load (ISI) glucose and insulin and either parameter (1A, and 1B scores) were determined. RESULTS: DM was diagnosed in 21.4% of females, and 20.6% of males, and impaired glucose tolerance in 24% females and 21.3% males. Fasting and post-load glucose, triglyceride and HDL-cholesterol were correlated with all indices in both sexes (P < 0.05). The relative risk of different conditions in the upper quartile of ISI was similar to that observed in the upper quartile of HOMA. The HOMA index was similarly associated with low HDL-cholesterol and hypertriglyceridaemia as fasting insulin, while it showed a greater association with diabetes; ISI was similarly associated with all three conditions as the HOMA index. CONCLUSIONS: Indices of IS based on fasting glucose and insulin show a greater association with diabetes, but not with other abnormalities related to insulin resistance, when compared with fasting insulin levels. Indices based on post-load glucose and insulin do not offer any advantage over those based on fasting values.

Adult↗
PubMed2003

The QUOVADIS Study: features of obese Italian patients seeking treatment at specialist centers.

Obesity is a major risk factor for several chronic diseases, but the burden associated with it also extends to psychosocial areas and to perceived health status. In 1999 an observational study on health-related quality of life in obesity was planned. The study was entirely web-based. Case Report Forms and the individual items of 7 self-administered questionnaires were directly implemented on a general database via an extranet system from 25 Italian centers. By December 2001, after enrolment had stopped, the database included anthropometric, socioeconomic and clinical data of 1944 patients (78% females). Weight-cycling was reported in over 80% of cases, overeating in 60-65%, structured physical activity in only 13-15%. Several chronic illnesses were associated. Whereas the prevalence of diabetes and hypertension was related to the degree of obesity, hyperlipidemia and coronary heart disease did not increase further with increasing obesity. A disturbed psychological mood was twice more common in females. Concern for present health was the main reason for seeking treatment in both genders; concern for body appearance was more common in females. Male subjects were more frequently assigned to dietary counseling and physical exercise, whereas in females psychotherapy was more frequently considered. Various forms of behavioral approach were planned in approximately 50% of patients. Finally, very few patients were initially considered for pharmacological intervention or bariatric surgery. The study provides a comprehensive picture of Italian patients seeking treatment for obesity. Data on perceived health status, psychological well being, body image awareness, eating behavior disorders and psychopathological distress will provide clues to a comprehensive assessment of obesity, the effects of treatments and reasons for failure.

Adolescent↗
PubMed2002

Eating behavior in obese patients with and without type 2 diabetes mellitus.

OBJECTIVE: Aim of this study was the assessment of the prevalence of eating disorders, and of eating disorder symptoms, in obese patients with type 2 diabetes, compared to non-diabetic subjects. DESIGN: Three samples of individuals were studied: a series of 156 (76 male, 80 female) overweight and obese type 2 diabetic patients, aged 30-65 y, with a body mass index (BMI)>28 kg/m(2) (DM); a series of 192 (20 male, 172 female) obese (BMI>30 kg/m(2)) non-diabetic patients aged 30-65 y seeking treatment for weight loss (OC); and a non-clinical sample of 48 (22 male, 26 female) obese (BMI>30 kg/m(2)) subjects aged 30-65 y selected from the lists of two general practices (OP). Eating behavior was assessed using the Eating Disorder Examination (EDE 12.0D). RESULTS: The prevalence of Binge Eating Disorder was lower than 5% in all the three samples. Median EDE scores in females were significantly higher in OC (3.0) and OP (3.4) than in DM (1.7), while diabetic patients showed higher scores on Restraint than both non-diabetic samples. Among diabetic patients, a significant correlation of EDE scores with HbA(1)c was observed. CONCLUSIONS: Type 2 diabetes is unlikely to induce relevant eating disturbances in obese patients, apart from an increase in restraint. Abnormalities of eating attitudes and behavior are associated with an impairment of metabolic control.

Adult↗
PubMed2001

Psychopathological and clinical features of outpatients with an eating disorder not otherwise specified.

In order to investigate similarities and differences between Eating Disorder Not Otherwise Specified (EDNOS) and Anorexia Nervosa (AN) and Bulimia Nervosa (BN), we studied a consecutive series of 189 female outpatients attending two Eating Disorder Units. The data were collected by means of interviews (Eating Disorder Examination, EDE 12.0D), the Structured Diagnostic Interview for DSM III-R, (SCID), and self-reported questionnaires (Beck Depression Inventory, BDI, and State and Trait Anxiety Inventory, STAI 1-2). The diagnosis of EDNOS was as frequent as that of AN and BN (43.8% versus 43.2%). There were no significant differences between EDNOS and AN/BN patients in terms of their general and specific psychopathological features, but significant differences were observed between bulimic-like and anorectic-like EDNOS patients, as well as between those with AN and BN. In conclusion, in our clinical setting, the patients with EDNOS and those with typical eating disorders have similar psychopathological features, thus suggesting that EDNOS patients should be further divided into two groups, anorectic-like (similar to AN) and bulimic-like (similar to BN) patients.

Adolescent↗
PubMed2001

Effect of metformin on glucagon-like peptide 1 (GLP-1) and leptin levels in obese nondiabetic subjects.

OBJECTIVE: To evaluate the effects of metformin on glucagon-like peptide 1 (GLP-1) and leptin levels. RESEARCH DESIGN AND METHODS: A total of 10 obese nondiabetic male patients were studied before and after a 14-day treatment with 2,550 mg/day metformin and were compared with 10 untreated obese control subjects. On days 0 and 15, leptin and GLP-1(7-36)amide/(7-37) levels were assessed before and after an oral glucose load during a euglycemic hyperinsulinemic clamp to avoid the interference of variations of insulinemia and glycemia on GLP-1 and leptin secretion. The effects of metformin on GLP-1(7-36)amide degradation in human plasma and in a buffer solution containing dipeptidyl peptidase IV (DPP-IV) were also studied. RESULTS: Leptin levels were not affected by the oral glucose load, and they were not modified after metformin treatment. Metformin induced a significant (P < 0.05) increase of GLP-1(7-36)amide/(7-37) at 30 and 60 min after the oral glucose load (63.8 +/- 29.0 vs. 50.3 +/- 15.6 pmol/l and 75.8 +/- 35.4 vs. 46.9 +/- 20.0 pmol/l, respectively), without affecting baseline GLP-1 levels. No variations of GLP-1 levels were observed in the control group. In pooled human plasma, metformin (0.1-0.5 microg/ml) significantly inhibited degradation of GLP-1(7-36)amide after a 30-min incubation at 37 degrees C; similar results were obtained in a buffer solution containing DPP-IV. CONCLUSIONS: Metformin significantly increases GLP-1 levels after an oral glucose load in obese nondiabetic subjects; this effect could be due to an inhibition of GLP-1 degradation.

Adolescent↗
PubMed2000

Anorexia nervosa and celiac disease: two case reports.

OBJECTIVE: Anorexia nervosa (AN) has been reported to be associated with several chronic medical illnesses. In this study, we report two cases of women suffering from AN and celiac disease. The former received the diagnosis of celiac disease before the onset of the eating disorder. For the latter, the diagnosis of celiac disease followed that of AN. Authors discuss the complex relationships between celiac disease and AN. They suggest that in the first case the dietary restriction could act as a trigger for the eating disorder, whereas in the second case, the onset of celiac disease could have exacerbated the clinical symptoms of AN.

Adult↗
PubMed2000

Eating attitudes and behavior throughout the menstrual cycle in obese women: a case-control study.

Premenstrual variations of eating behavior are reported in several studies, but their relationship with mood is unclear. Eating behavior and physical and psychological complaints during the menstrual cycle were studied in 107 obese patients and 93 matched controls using retrospective (Weekly Bulimic Test Edinburgh, W-BITE and Premenstrual Assessment Form, PAF) and prospective (Daily Rating Form, DR) questionnaires. Eating disorder symptoms increased in the premenstrual phase, as shown by the W-BITE scores both in patients (6.2 +/- 5.3 premenstrual week vs 4.9 +/- 4.4 postmenstrual week, p < 0.05) and in control subjects (4.9 +/- 4.1 premenstrual week vs 4.2 +/- 3.0 postmenstrual week, p < 0.05) and were correlated to premenstrual complaints in control subjects (r = 0.5; p < 0.05) but not in obese women (r = 0.2; p = NS). A close relationship between physical and psychological premenstrual disturbances was observed in obese patients only. Premenstrual variation of eating behavior could be the target of specific treatment.

Adult↗
PubMed2000

Glucagon-like peptide (GLP)-1 and leptin concentrations in obese patients with Type 2 diabetes mellitus.

AIMS: To assess differences in circulating leptin and glucagon-like peptide (GLP)-1 concentrations before and after an oral glucose load, in euglycaemic and isoinsulinaemic conditions, between obese patients with and without Type 2 diabetes mellitus. METHODS: Ten male obese (body mass index (BMI) > 30 kg/m2) patients with Type 2 diabetes and 20 matched non-diabetic subjects were studied. Leptin, GLP-1(7-36)amide and GLP-1(7-37) concentrations were measured 0, 30, 60, and 90 min after a 50-g oral glucose load administered 90 min after the beginning of a euglycaemic hyperinsulinaemic clamp. RESULTS: GLP-1(7-36)amide concentrations before the glucose load were significantly lower in diabetic patients than in controls (median (quartiles): 50.5 (44.7-53.2) vs. 128.7(100-172.5) pg/ml; P < 0.01), while no difference was observed in baseline GLP-1(7-37). In non-diabetic subjects, GLP-1(7-36)amide and GLP-1(7-37) concentrations increased significantly after the oral glucose load, while no glucose-induced increase in GLP-1 concentration was observed in diabetic patients. GLP-1(7-36)amide at 30, 60, and 90 min, and GLP-1(7-37) at 30 min, of the glucose challenge, were significantly lower in diabetic patients. Leptin concentrations were not significantly different in diabetic patients when compared to non-diabetic subjects, and they did not change after the oral glucose load. DISCUSSION: Leptin concentrations are not significantly modified in obese Type 2 diabetic patients. GLP-1(7-36)amide baseline concentrations are reduced in Type 2 diabetes; moreover, diabetic subjects show an impaired response of GLP-1 to oral glucose in euglycaemic, isoinsulinaemic conditions. This impairment, which is not the result of differences in glycaemia or insulinaemia during assessment, could contribute to the pathogenesis of hyperglycaemia in Type 2 diabetes mellitus.

Blood Glucose↗
PubMed1999

Failure of acupuncture in the treatment of obesity: a pilot study.

Acupuncture has been anecdotally reported to induce weight loss in obese patients. This pilot study examines its efficacy in a randomised, placebo-controlled clinical trial. Forty (33 F, 7 M) obese (BMI > 30 kg/m2) outpatients were randomised to either placebo or acupuncture (12 weekly sessions of minimal acupuncture and somatic moxibustion-acupuncture associated with auriculopuncture respectively). BMI, eating attitudes (BES), anxiety (STAI), depression (BDI), and obesity-related quality of life (ORWELL 97) were measured at the beginning and end of the treatment. Six (30%) patients in the treatment group and 12 (60%) in the placebo group dropped out. Intention-to-treat analysis did not show any significant effect of acupuncture on BMI and obesity-related quality of life; eating attitudes improved in both groups, possibly because of the placebo effect. A significant improvement in anxiety and depression was only observed in the acupuncture group. In conclusion, acupuncture does not promote weight loss and is not recommendable in the treatment of obesity. It may, however, improve the psychological status of obese patients.

Acupuncture Therapy↗
PubMed1999

Venlafaxine versus fluoxetine in the treatment of atypical anorectic outpatients: a preliminary study.

The efficacy of venlafaxine and fluoxetine in the treatment of atypical anorexia nervosa (AN) was compared in a controlled trial. A consecutive series of 24 atypical anorectic females was assigned to either venlafaxine (75 mg/day) or fluoxetine (40 mg/day) plus cognitive-behavioural therapy (CBT). Eating Disorder Examination (EDE12.0D), Beck Depression Inventory (BDI) and State and Trait Anxiety Inventory (STAI) scores were compared before and after 6 months of treatment. Venlafaxine and fluoxetine determined an increase of body mass index (BMI) and a significant reduction of EDE12.0D and BDI scores; venlafaxine alone reduced STAI scores. It would seem that venlafaxine is as effective as fluoxetine when combined with CBT in the treatment of atypical AN.

Adolescent↗
PubMed1999

Comparison of ADA and WHO screening methods for diabetes mellitus in obese patients. American Diabetes Association.

AIMS: To compare the performance of fasting glycaemia (FG) and oral glucose tolerance testing (OGTT) in screening for diabetes mellitus in obese patients. METHODS: A consecutive series of 528 (445 female, 83 male) obese (body mass index > 30 kg/m2) outpatients, aged 45.2 +/- 14.3 years, was studied with FG and OGTT. The association of categories of glucose tolerance (diabetes and impaired glucose tolerance (IGT)) and fasting glycaemia (diabetes and impaired fasting glucose (IFG)) with hypertension and hyperlipidaemia were also assessed. RESULTS: Prevalence of diabetes and IGT were 20.1 and 22.9%, respectively. FG (> 7 mmol/l) had a sensitivity of 56.7%. Using FG > 6.1 mmol/l, and OGTT in those above the threshold, the sensitivity for diabetes would have been 89.6%, with a positive predictive value of 59.0%, but 68.8% of cases of IGT would not have been detected. Patients with impaired fasting glucose (FG of 6.1-7.0 mmol/l) showed lower insulin sensitivity and impaired beta cell function, and a weaker association to hypertriglyceridaemia, when compared to IGT. CONCLUSION: FG > 7.0 mmol/l does not show a sufficient sensitivity for the screening of diabetes in obese patients. FG > 6. mmol/l has a satisfactory sensitivity for diabetes, but not for IGT. IFG has different pathophysiological features than IGT and cannot be assumed to have the same prognostic value of IGT.

Adult↗