Publications by authors named "Vignati F"

Dysglycemia is a condition preceding diabetes mellitus. The two situations inherent in this condition are called impaired fasting glucose (IFG) and impaired glucose tolerance (IGT). If one of these situations is found in the patient, after the advice of an appropriate diet and physical activity, the addition of nutraceuticals or supplements can be considered, which can stop or delay the progression to diabetes mellitus over time.

View Article and Find Full Text PDF

Purpose: To report data on the real-world effectiveness and safety of injectable (IS) and oral (OS) therapies in obese or overweight diabetes (T2DM) patients on glycometabolic control, weight loss (WL) and weight maintenance after the use of semaglutide.

Methods: 175 subjects with obesity or overweight and T2DM were retrospectively assessed. Of these, 129 (75F, 54 M; mean age 61.

View Article and Find Full Text PDF

Aim: This guideline (GL) is aimed at providing a clinical practice reference for the management of adult patients with overweight or obesity associated with metabolic complications who are resistant to lifestyle modification.

Methods: Surgeons, endocrinologists, gastroenterologists, psychologists, pharmacologists, a general practitioner, a nutritionist, a nurse and a patients' representative acted as multi-disciplinary panel. This GL has been developed following the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach.

View Article and Find Full Text PDF

Edible/medicinal mushrooms have been traditionally used in Asian countries either in the cuisine or as dietary supplements and nutraceuticals. In recent decades, they have aroused increasing attention in Europe as well, due to their health and nutritional benefits. In particular, among the different pharmacological activities reported (antibacterial, anti-inflammatory, antioxidative, antiviral, immunomodulating, antidiabetic, etc.

View Article and Find Full Text PDF

Purpose: Bariatric surgery, as Roux-en-Y gastric bypass (RYGB), laparoscopic gastric banding (LGB), and laparoscopic sleeve gastrectomy (LSG), is considered the gold standard treatment to achieve long-term weight loss in severe obesity. In patients who fail to maintain the achieved weight, pharmacological treatment may be required. Here, we reported our real-life experience on the efficacy of liraglutide therapy in 62 patients who regained weight after bariatric surgery.

View Article and Find Full Text PDF

Summary: Resistance to thyroid hormone (RTH) is a rare hereditary syndrome with impaired sensitivity to thyroid hormones (TH) and reduced intracellular action of triiodothyronine (T3) caused by genetic variants of TH receptor beta (TRB) or alpha (TRA). RTH type beta (RTHβ) due to dominant negative variants in the TRB gene usually occurs with persistent elevation of circulating free TH, non-suppressed serum TSH levels responding to a thyrotropin-releasing hormone (TRH) test, an absence of typical symptoms of hyperthyroidism and goiter. Here, we present a rare variant in the TRB gene reported for the first time in an Italian patient with generalized RTHβ syndrome.

View Article and Find Full Text PDF

Human nutrition encompasses an extremely broad range of medical, social, commercial, and ethical domains and thus represents a wide, interdisciplinary scientific and cultural discipline. The high prevalence of both disease-related malnutrition and overweight/obesity represents an important risk factor for disease burden and mortality worldwide. It is the opinion of Federation of the Italian Nutrition Societies (FeSIN) that these two sides of the same coin, with their sociocultural background, are related to a low "nutritional culture" secondary, at least in part, to an insufficient academic training for health-care professionals (HCPs).

View Article and Find Full Text PDF

Necrobiosis lipoidica diabeticorum (NLD) is a chronic condition, which is characterized by single or multiple lesions on the legs, and occurs in 0.3% of patients with diabetes. Recently, platelet-rich plasma (PRP) has been used in several clinical settings to promote sustained healing and better outcome.

View Article and Find Full Text PDF

A chronic wound is a wound that is delayed in one of the wound-healing stages and cannot progress any further. A chronic wound leaves the patient at risk of infection and hospitalization. In these case series, 16 patients affected by venous ulcers underwent Hyalomatrix PA grafting for reconstructive surgery.

View Article and Find Full Text PDF

Antisense transcription has long been recognized as a mechanism involved in the regulation of gene expression. Therefore, several human diseases associated with abnormal patterns of gene expression might display antisense RNA-mediated pathogenetic mechanisms. Such issue could be particularly relevant for cancer pathogenesis, since deregulated gene expression has long been established as a hallmark of cancer cells.

View Article and Find Full Text PDF

Background: The stromal vascular fraction (SVF) is a heterogeneous cell population derived from the adipose tissue. There is still a lack of information concerning the characterization of the cell subpopulations constituting the SVF as well as its mesenchymal and haematopoietic potential. Furthermore there are great variations in its phenotypical characterization.

View Article and Find Full Text PDF

Objective: Chromogranin A (CgA) is the most accurate general marker of neuroendocrine tumours. Supranormal CgA concentrations have been recorded in patients with tumours of neuroectodermal origin such as phaeochromocytoma and paraganglioma.

Design: The present study was performed to assess the role of CgA determination in the management of patients with phaeochromocytoma, in comparison with urinary catecholamines and their metabolites.

View Article and Find Full Text PDF

Intraoperative [111In]-pentetreotide scintigraphy with a hand-held gamma detector probe has recently been proposed to increase the intraoperative detection rate of small neuroendocrine tumors and their metastases. We report a case of a 28-yr-old woman with ectopic Cushing's syndrome due to an ACTH-secreting bronchial carcinoid, in whom the use of radioguided surgery improved disease management. At presentation, radiolabeled pentetreotide scintigraphy was the only procedure able to detect the ectopic source of ACTH.

View Article and Find Full Text PDF

The differential diagnosis and the identification of the source of ACTH in occult ectopic Cushing's syndrome due to a bronchial carcinoid still represents a challenge for the endocrinologist. We report our experience in six patients with occult bronchial carcinoid in whom extensive hormonal, imaging, and scintigraphic evaluation was performed. All patients presented with hypercortisolism associated with high plasma ACTH values.

View Article and Find Full Text PDF

Adrenal adenoma is the most frequent lesion among adrenal incidentalomas. The present retrospective study was undertaken to investigate medium-term evolution of supposed or ascertained adrenocortical adenomas in a group of 53 subjects (16 males and 37 females, aged 31-83 yr), with bilateral (no.=8) or monolateral (no.

View Article and Find Full Text PDF

Objective: In patients with Cushing's disease multihormonal responses to ovine corticotrophin releasing hormone (oCRH) have been detected in blood from inferior petrosal sinuses. This finding has been explained by co-secretion of other hormones, in addition to ACTH, by the pituitary adenoma itself or by paracrine effects exerted by the adenoma on normal periadenomatous pituitary cells. To assess these hypotheses we compared the presence of a CRH induced GH and/or PRL response during inferior petrosal sinus sampling to the immunohistochemical detection of PRL and GH in adenomatous tissue removed from patients with Cushing's disease.

View Article and Find Full Text PDF

Over the last few years ketoconazole and octreotide have been employed in the treatment of pituitary-dependent or ectopic Cushing's syndrome. In four patients (two men and two women, aged 25-64 yr) with severe ACTH-dependent hypercortisolism in whom medical treatment with ketoconazole showed limited effectiveness and/or tolerability, we tried the association with octreotide. In all patients ketoconazole (200-1000 mg) induced a marked decrease in urinary free cortisol (UFC) excretion, but normalization could not be achieved.

View Article and Find Full Text PDF

Purpose: To assess the accuracy of MR in the preoperative identification of corticotropin-secreting pituitary microadenomas.

Methods: Twenty-six patients with clinical and biochemical evidence of pituitary-driven Cushing disease in whom MR of the seller region was performed were selected for this study. The MR examinations were retrospectively evaluated by a neuroradiologist who was aware of the presence of an adenoma at surgery but not of location and size of the lesion.

View Article and Find Full Text PDF

In the attempt to identify parameters that might predict the risk of recurrence of Cushing's disease at an early stage after successful pituitary microsurgery, we evaluated retrospectively the usefulness of an early postoperative determination of morning plasma and urinary cortisol levels and of adrenocorticotropin (ACTH) and cortisol responses to ovine corticotropin-releasing hormone (oCRH) stimulation in 30 patients with pituitary-driven Cushing's disease followed up for 9 months to 10 years after pituitary surgery. At an early postoperative evaluation, while off substitutive therapy, 30 patients, out of 36 treated by pituitary microsurgery for Cushing's disease, were considered in remission on the basis of subnormal (21 patients), low-normal (eight patients) or normal (one patient) morning plasma and urinary cortisol levels, whereas six patients with supranormal urinary cortisol excretion were considered as surgical failures. The plasma ACTH response to oCRH was subnormal (17 patients) or normal (four patients) in 21 patients (Group 1) and supranormal in nine patients (Group 2).

View Article and Find Full Text PDF

In the present study the cognitive performance of 25 patients with Cushing's disease (CD) was extensively evaluated in comparison with normal control subjects, matched one by one. The results indicate a selective impairment of memory functions: the number of patients showing a significantly impaired mnesic performance increases with age. Moreover, the neuropsychological impairment tends to recover in those cases who underwent further controls after surgical treatment.

View Article and Find Full Text PDF

During bilateral and simultaneous venous sampling of the inferior petrosal sinuses for preoperative localization of ACTH secreting microadenomas, alpha-subunit levels, in addition to ACTH, were determined in 9 patients with Cushing's disease. The aim of the study was to evaluate the possible occurrence of unilateral increases of alpha-subunit in basal conditions and the alpha-subunit responsiveness to oCRH. All the patients examined showed a central to peripheral and an intersinus gradient of ACTH concentrations before and/or after oCRH stimulation.

View Article and Find Full Text PDF

Preoperative localization of ACTH-secreting microadenomas has been performed in 9 patients with Cushing's disease by using bilateral and simultaneous venous sampling of the inferior petrosal sinuses. In addition to ACTH and PRL we determined GH levels after oCRH stimulation in order to confirm the possible occurrence of unilateral GH increases, as recently observed by us in one patient. A central-to-peripheral and an intersinus gradient of ACTH concentration was observed in all patients examined before and/or after oCRH stimulation.

View Article and Find Full Text PDF

We report our experience on venous sampling of the inferior petrosal sinuses for basal and CRH-stimulated ACTH and PRL gradients in 8 patients with surgically proven Cushing's disease who had normal preoperative neuroradiological studies. In 7 patients basal plasma ACTH concentrations in the inferior petrosal sinus ipsilateral to the tumor were higher than in the contralateral sinus; the gradients were enhanced by oCRH administration. In one out of two patients who had previously undergone unsuccessful pituitary microsurgery, neither basal nor oCRH-induced ACTH increases led to correct localization of the microadenoma within the pituitary.

View Article and Find Full Text PDF

A decrease of both hypothalamic and cortical CCK occurred in the brain of rats killed 8 hours after hepatic artery ligation following portocaval anastomosis. Brain CCK depletion was not reproduced by exogenously provoked hyperammonemia nor by insulin-induced hypoglycemia, thus suggesting a central mechanism for the derangement of the CCKergic system in the course of acute liver failure.

View Article and Find Full Text PDF

We describe herein the reduction in the size of an ACTH-secreting pituitary macroadenoma in a patient with Nelson's syndrome during chronic administration of sodium valproate, and the changes in tumour volume after withdrawal and re-institution of treatment. The patient had elevated plasma ACTH levels (1123-1255 pmol/l), which increased markedly after CRH stimulation. A first 4-month course of sodium valproate administration (600 mg/day, orally) was started.

View Article and Find Full Text PDF