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1.
Mol Psychiatry ; 19(6): 724-32, 2014 Jun.
Article in English | MEDLINE | ID: mdl-23999524

ABSTRACT

Anorexia nervosa (AN) and related eating disorders are complex, multifactorial neuropsychiatric conditions with likely rare and common genetic and environmental determinants. To identify genetic variants associated with AN, we pursued a series of sequencing and genotyping studies focusing on the coding regions and upstream sequence of 152 candidate genes in a total of 1205 AN cases and 1948 controls. We identified individual variant associations in the Estrogen Receptor-ß (ESR2) gene, as well as a set of rare and common variants in the Epoxide Hydrolase 2 (EPHX2) gene, in an initial sequencing study of 261 early-onset severe AN cases and 73 controls (P=0.0004). The association of EPHX2 variants was further delineated in: (1) a pooling-based replication study involving an additional 500 AN patients and 500 controls (replication set P=0.00000016); (2) single-locus studies in a cohort of 386 previously genotyped broadly defined AN cases and 295 female population controls from the Bogalusa Heart Study (BHS) and a cohort of 58 individuals with self-reported eating disturbances and 851 controls (combined smallest single locus P<0.01). As EPHX2 is known to influence cholesterol metabolism, and AN is often associated with elevated cholesterol levels, we also investigated the association of EPHX2 variants and longitudinal body mass index (BMI) and cholesterol in BHS female and male subjects (N=229) and found evidence for a modifying effect of a subset of variants on the relationship between cholesterol and BMI (P<0.01). These findings suggest a novel association of gene variants within EPHX2 to susceptibility to AN and provide a foundation for future study of this important yet poorly understood condition.


Subject(s)
Anorexia Nervosa/genetics , Epoxide Hydrolases/genetics , Genetic Variation , Adult , Anorexia Nervosa/metabolism , Body Mass Index , Case-Control Studies , Cholesterol/metabolism , Cohort Studies , Female , Genetic Predisposition to Disease , Humans , Longitudinal Studies , Male , Middle Aged , Polymorphism, Single Nucleotide , Psychometrics , White People/genetics , Young Adult
2.
Mediators Inflamm ; 2014: 972761, 2014.
Article in English | MEDLINE | ID: mdl-25110402

ABSTRACT

This study investigated the involvement of proteasome and macrophages M2 in the protection afforded by telmisartan against the acute myocardial infarction in Zucker diabetic fatty (ZDF) rats with metabolic syndrome. ZDF rats were treated for three weeks with telmisartan at doses of 7 and 12 mg/kg/day. After treatment, rats were subjected to a 25 min occlusion of the left descending coronary artery followed by 2 h reperfusion (I/R). At the end of the I/R period, biochemical, immunohistochemical, and echocardiographic evaluations were done. Telmisartan treatment (7 mg/kg and 12 mg/kg) reduced the myocardial infarct size, the expression of proteasome subunits 20S and 26S, and the protein ubiquitin within the heart. The compound has led to an increased M2 macrophage phenotype within the cardiac specimens and a modification of the cardiac cytokine and chemokine profile. This was functionally translated in improved cardiac performance as evidenced by echography after 2 h reperfusion. 7 mg/kg/day telmisartan was sufficient to improve the left ventricular ejection fraction LVEF of the rat heart recorded after I/R (e.g., vehicle 38 ± 2.2%; telmisartan 54 ± 2.7%) and was sufficient to improve the diastolic function and the myocardial performance index up to values of 0.6 ± 0.01 measured after I/R.


Subject(s)
Benzimidazoles/therapeutic use , Benzoates/therapeutic use , Macrophages/metabolism , Metabolic Syndrome/drug therapy , Myocardial Infarction/drug therapy , Proteasome Endopeptidase Complex/metabolism , Animals , Metabolic Syndrome/immunology , Myocardial Infarction/immunology , Rats , Rats, Zucker , Telmisartan
3.
Int J Obes (Lond) ; 37(5): 693-8, 2013 May.
Article in English | MEDLINE | ID: mdl-22846777

ABSTRACT

BACKGROUND/AIM: Liraglutide, a glucagon-like peptide-1 analog, induces weight loss. We investigated whether liraglutide affects gastric accommodation and satiation by measuring the intragastric pressure (IGP) during nutrient-drink consumption and using the barostat technique. METHODS: Ten healthy volunteers (HVs) were tested after placebo, 0.3, 0.6 or 1.2 mg liraglutide administration. IGP was studied during intragastric nutrient-drink (1.5 kcal ml(-1)) infusion (60 ml min(-1)), while the HVs scored their satiation on a graded scale until maximal satiation. In a separate session, isobaric distentions were performed using the barostat with stepwise increments of 2 mm Hg starting from minimal distending pressure, although HVs scored their perception; gastric volume was monitored 30 min before and until 60 min after ingestion of 200 ml of nutrient drink. Data are presented as mean±s.e.m. comparisons were performed with ANOVA (P<0.05 was significant). RESULTS: During nutrient-drink infusion, IGP decreased with 4.1±0.7, 3.0±0.4, 2.1±0.3 and 2.6±0.4 mm Hg (placebo, 0.3, 0.6 and 1.2 mg liraglutide, respectively; P<0.05). The maximum-tolerated volume was not different, except after treatment with 1.2 mg liraglutide (695±135 ml) compared with placebo (1008±197 ml; P<0.05); however, 1.2 mg liraglutide induced nausea in all volunteers. In the barostat study, liraglutide did not affect the perception or compliance, but significantly decreased gastric accommodation to the meal (168±27 vs 78.8±36.4 ml after treatment with placebo and 0.6 mg liraglutide, respectively; P<0.05). CONCLUSION: Although no effect on perception, compliance or satiation was observed, liraglutide inhibited gastric accommodation. Whether this effect is involved in the anorectic effect of liraglutide remains to be determined.


Subject(s)
Gastric Emptying/drug effects , Glucagon-Like Peptide 1/analogs & derivatives , Pressure , Stomach/drug effects , Stomach/physiology , Adult , Beverages , Body Mass Index , Dose-Response Relationship, Drug , Double-Blind Method , Eating , Female , Gastric Emptying/physiology , Gastrointestinal Motility/drug effects , Glucagon-Like Peptide 1/administration & dosage , Glucagon-Like Peptide 1/adverse effects , Glucagon-Like Peptide 1/pharmacology , Humans , Liraglutide , Male , Manometry , Nausea/chemically induced , Postprandial Period , Satiation/drug effects , Treatment Outcome
4.
Radiol Med ; 118(4): 648-59, 2013 Jun.
Article in Italian | MEDLINE | ID: mdl-23184246

ABSTRACT

PURPOSE: The aim of this study was to define the relationship between paediatric obstructive sleep apnoea-hypopnea syndrome (OSAHS) and craniofacial morphovolumetric features through comparative craniometric analyses between affected children and controls based on conventional cephalometry. MATERIALS AND METHODS: Cephalometric examinations of 40 children affected by OSAHS were retrospectively evaluated. Sixteen craniometric landmarks were identified, and 27 linear and angular indices related to craniofacial morphovolumetric features were measured. Subsequently, the same process of identifying landmarks and measuring indices was performed on the cephalometric examinations of 40 controls. For each index, we then calculated in both groups the mean, standard deviation, standard error and p value. By comparing the values obtained in the two series, we calculated the degree of significance of each difference between children with OSAHS and controls using the Student t test. RESULTS: Differences of only 5/27 linear and angular indices considered were not statistically significant between groups, thus confirming susceptibility to the disorder in relation to certain splanchnocranic morphovolumetric features. The most significant differences involved mandibular plane inclination and distance between landmark sella and hyoid bone, a reliable index being the vertical position of the latter. CONCLUSIONS: Despite the limitations associated with the 2D nature of conventional cephalometry, mainly related to projection and identification errors, and despite the upright position during examination, we consider the diagnostic value and information content of this technique high, thus reaffirming its role as a first-line imaging investigation in children with sleep-related breathing disorders.


Subject(s)
Cephalometry/methods , Craniofacial Abnormalities/diagnostic imaging , Craniofacial Abnormalities/physiopathology , Sleep Apnea Syndromes/physiopathology , Adolescent , Case-Control Studies , Child , Child, Preschool , Female , Humans , Male , Radiographic Image Interpretation, Computer-Assisted , Retrospective Studies
5.
Radiol Med ; 118(2): 276-90, 2013 Mar.
Article in English | MEDLINE | ID: mdl-22580801

ABSTRACT

The aim of our study was to define the changes in morphovolumetric features of neurocranium, basicranium and splanchnocranium in the population of Campania, southern Italy, over the last 2,700 years. This was a very intense period for this region from both historical and evolutionary perspectives and was marked by the succession of colonisations, dominations and invasions by several European and non-European peoples, events that profoundly influenced the original genetic heritage, which subsequently became more complex. Unlike most previous authors, we based our craniometric comparative analysis on multidetector computed tomography (MDCT) studies of contemporary and ancient series dating to between the seventh and fifth centuries B.C. of skulls found in the Etruscan necropolis of Pompei and Pontecagnano. MDCT is extremely reliable in identifying landmarks and measuring linear and angular indices through the use of multiplanar and tridimensional reformations. While highlighting a remarkable stability of 22/32 of the indices considered, as an effect of the role of the genetic heritage in preserving morphovolumetric features in a given population, statistical analysis showed some interesting results: the main changes concerned the splanchnocranium and the occlusion, indicating a higher sensitivity of these districts to environmental factors, mainly related to diet. Conversely, neurobasicranial complex morphovolumetric features remained amazingly intact. In particular, the neurocranium increased in overall capacity in response to the growing brain and changed shape with a progressive shift to a dolichocranic, flattened frontal pattern; the basicranium shape was preserved, as indicated by the stability of the cranial base (NSBa) angle over time. The splanchnocranium, on the contrary, has undergone a dramatic involution, even conditioning gnathic structures with changes in palatal shape (more acute) and in the relationship between the jaws on the sagittal plane, resulting in increased prevalence of Angle's class I and III malocclusions.


Subject(s)
Cephalometry , Paleontology/methods , Skull/diagnostic imaging , Tomography, X-Ray Computed , Data Interpretation, Statistical , Female , Humans , Italy , Male
6.
Am J Physiol Gastrointest Liver Physiol ; 302(7): G732-9, 2012 Apr.
Article in English | MEDLINE | ID: mdl-22268097

ABSTRACT

We set out to determine the effect of peptide YY(3-36) (PYY(3-36)) on the gastric muscle tone in conscious rats by measuring intragastric pressure (IGP) during intragastric nutrient drink infusion. After an overnight fast, a chronically implanted gastric fistula was connected to a custom-made nutrient drink infusion system and a catheter to measure IGP. IGP was measured before and during the infusion of a nutrient drink (Nutridrink; 0.5 ml/min) until 10 ml was infused. Rats were treated with PYY(3-36) (0, 33, and 100 pmol·kg(-1)·min(-1)) in combination with a subcutaneous injection of the Y(2) receptor antagonists JNJ31020028 (10 mg/kg) or BIIE0246 (2 mg/kg). Experiments were also performed after subdiaphragmatic vagotomy and after pretreatment with 3 ml of nutrient drink (to mimic a fed state). IGP was compared as the average IGP during nutrient infusion, represented as means ± SE and compared using ANOVA. PYY(3-36) dose dependently increased the IGP during nutrient infusion (4.7 ± 0.3, 5.7 ± 0.5 and 7.3 ± 0.7 mmHg; P < 0.01) while JNJ31020028 and BIIE0246 could block this increase [4.4 ± 0.5 (P < 0.001) and 4.8 ± 0.4 (P < 0.05) mmHg, respectively]. Also in vagotomized rats, PYY(3-36) was able to significantly increase the IGP during, an effect attenuated by JNJ31020028. BIIE0246 and JNJ31020028 were not able to decrease the IGP when no PYY(3-36) was administered. PYY(3-36) increased gastric tone through an Y(2) receptor-mediated mechanism that does not involve the vagus nerve. Y(2) receptor antagonists were not able to decrease gastric tone without exogenous administration of PYY(3-36), indicating that Y(2) receptors do not play a crucial role in the determination of gastric tone in physiological conditions.


Subject(s)
Muscle Tonus/physiology , Receptors, Gastrointestinal Hormone/metabolism , Stomach/physiology , Animals , Arginine/administration & dosage , Arginine/analogs & derivatives , Arginine/pharmacology , Benzamides/pharmacology , Benzazepines/administration & dosage , Benzazepines/pharmacology , Dose-Response Relationship, Drug , Gene Expression Regulation/physiology , Male , Peptide Fragments , Peptide YY/administration & dosage , Peptide YY/pharmacology , Piperazines/pharmacology , Rats , Rats, Wistar , Receptors, Gastrointestinal Hormone/antagonists & inhibitors , Receptors, Gastrointestinal Hormone/genetics
7.
Radiol Med ; 117(5): 759-71, 2012 Aug.
Article in English | MEDLINE | ID: mdl-22228126

ABSTRACT

PURPOSE: This report describes the advantages of 3D anal endosonography in depicting the normal anatomy of the anal canal in relation to sex and age. MATERIALS AND METHODS: A retrospective study was performed of 85 patients, 33 men and 52 women, previously examined with 3D anal ultrasound (US) for clinically suspected anorectal disease but found to be negative. The examinations were performed with a Bruel and Kjaer US system with a 2050 transducer, scanning from the anorectal junction to the subcutaneous portion of the external anal sphincter (EAS). The 3D reconstructions provided an estimation of sphincter length in the anterior and posterior planes, and axial 2D images enabled calculation of the thickness of the internal anal sphincter (IAS) and EAS in the anterior, posterior and lateral transverse planes. RESULTS: Distribution of the sphincter complex is asymmetric in both sexes: the EAS and IAS are significantly shorter in females, especially in the anterior longitudinal plane (p=0.005 and p<0.001, respectively). EAS and IAS thickness increases with age, especially the lateral IAS (R(2)=0.37, p<0.001) and the posterior EAS (R(2)=0.29, p=0.01). CONCLUSIONS: A good knowledge of anal-canal anatomy is essential to detect sphincter abnormalities when assessing pelvic floor dysfunction.


Subject(s)
Anal Canal/anatomy & histology , Anal Canal/diagnostic imaging , Endosonography/methods , Imaging, Three-Dimensional , Adolescent , Adult , Aged , Female , Humans , Image Interpretation, Computer-Assisted , Male , Middle Aged , Retrospective Studies , Statistics, Nonparametric
8.
Minerva Endocrinol ; 36(1): 41-52, 2011 Mar.
Article in English | MEDLINE | ID: mdl-21460786

ABSTRACT

The somatostatin receptor scintigraphy (SRS), using octreotide radiolabelled with 111In (octreoscan, OCTs), is a consolidated diagnostic procedure in patients with neuroendocrine tumors. A higher accuracy has been demonstrated with single photon emission computed tomography-CT, while a further improvement has been obtained with positron emission tomography (PET)-CT, using somatostatin analogues radiolabeled with 68Ga, significantly increasing the number of detected lesions. Although the well-known presence of an OCTs uptake in many benign diseases, when in an active phase, the application of SRS in these patients did not find any clinical relevance yet. In this paper we discuss two fields of endocrinological interest where SRS could play a clinical role. In patients with Graves exophtalmos, the capability to differentiate between active and non-active disease can be helpful in define prognosis and therapeutic strategies. In patients with endocrine paraneoplastic syndromes (PNS), SRS can help in finding the underlying neoplasm, contributing to its characterization as premise to a therapeutic choice. The possible role of a surgery guided by OCTs is also explained and suggested. The incremental value of PET-CT with Ga-68 peptides is hypothesized to reduce the number of unknown neoplastic lesions frequently present in patients with PNS.


Subject(s)
Neuroendocrine Tumors/diagnostic imaging , Paraneoplastic Endocrine Syndromes/diagnostic imaging , Positron-Emission Tomography , Radiopharmaceuticals , Somatostatin/analogs & derivatives , Cushing Syndrome/diagnostic imaging , Graves Disease/diagnostic imaging , Humans , Osteomalacia/diagnostic imaging , Positron-Emission Tomography/methods , Predictive Value of Tests , Sensitivity and Specificity , Tomography, Emission-Computed, Single-Photon , Tomography, X-Ray Computed
9.
Minerva Med ; 102(2): 125-32, 2011 Apr.
Article in English | MEDLINE | ID: mdl-21483399

ABSTRACT

AIM: Aim of the present study was to evaluate the clinical efficacy, tolerability and quality-of-life measures to melevodopa in advanced Parkinson's disease (PD) with motor fluctuations (MFs). METHODS: A total of 37 patients with advanced PD and MFs participated in the study. Patients were switched from standard l-dopa/carbidopa to melevodopa and were treated for 10 weeks. RESULTS: Assessment of "On-Day" time demonstrated improvement to about 0.7 hour in the melevodopa treatment. The benefit was greater in patients with "delayed-on" (P=0.002) and especially in those with both "delayed-on" and "wearing-off" (P<0.001). Most patients showed a significant improvement in PDQ-39 total score (P=0.002) and PSI distress domain (P<0.001). Instead, not significant difference was observed in patients with only wearing-off. CONCLUSION: These data show that melevodopa is an effective agent for improving daily motor performance and quality-of-life in PD with "delayed-on", also in association with "wearing-off".


Subject(s)
Antiparkinson Agents/therapeutic use , Drug Substitution , Levodopa/analogs & derivatives , Levodopa/therapeutic use , Parkinson Disease/drug therapy , Psychomotor Performance/drug effects , Antiparkinson Agents/adverse effects , Female , Humans , Levodopa/adverse effects , Male , Middle Aged , Parkinson Disease/psychology , Quality of Life
10.
Radiol Med ; 116(1): 1-14, 2011 Feb.
Article in English, Italian | MEDLINE | ID: mdl-20981503

ABSTRACT

UNLABELLED: This paper analyses off-label prescribing of the iodinated organic and magnetic resonance (MR) contrast media used in diagnostic imaging and evaluates the liability profiles and medicolegal issues associated with such use. The term off-label generally indicates the use of known drugs for which new scientific evidence suggests use in a manner and in clinical scenarios not explicitly addressed by the drug data sheet and is outside the indications for which the medication was approved. In addition, the term also indicates the use of drugs with a different route of administration and dosage from those indicated in the information leaflet. Intravascular contrast media used in diagnostic imaging are drugs in the complete sense of the term, even though they have unique characteristics which in many ways distinguish them from other pharmacological agents. The off-label use of contrast media in diagnostic imaging is a little-investigated field and most commonly, but not exclusively, applies to gadolinium-based contrast media used in MR angiography as well as cardiac and paediatric applications. In particular, the off-label use of contrast media mostly concerns deviations from the recommended dose. As contrast media are to all effects pharmaceutical agents, their off-label use can be considered admissible within the limitations laid down by the Italian law in force (Article 3 of Law 94/98) and its interpretation, i.e. the following criteria must be present: the lack of a valid diagnostic alternative; written informed consent by the patient; the presence of scientific publications validated at the international level; assumption of responsibility by the radiologist. CONCLUSIONS: The use of contrast media in modern image-guided medicine is essential. In cases in which the information contained in the information leaflet is modified and updated in any way whatsoever (indications, dosage, at others), specifically if restrictions are introduced in accordance with the law in force, the pharmaceutical industry must provide formal and timely notification to radiologists. On their part as prescribers and users of contrast media, radiologists must remain up to date regarding any changes in indications, dosage and route of administration. Lastly, we propose that the radiology report includes not only the type but also the dose of contrast medium used.


Subject(s)
Contrast Media/pharmacology , Magnetic Resonance Imaging , Off-Label Use , Contrast Media/administration & dosage , Contrast Media/adverse effects , Humans , Iodine , Italy , Off-Label Use/economics , Off-Label Use/ethics , Off-Label Use/legislation & jurisprudence
11.
Radiol Med ; 116(5): 706-19, 2011 Aug.
Article in English, Polish | MEDLINE | ID: mdl-21225362

ABSTRACT

PURPOSE: This paper describes the radiological and clinical findings identified in a group of patients with H1N1 influenza. MATERIALS AND METHODS: Between May and mid-November 2009, 3,649 patients with suspected H1N1 influenza presented to our hospital. Our study population comprised 167 (91 male, 76 female patients, age range 11 months to 82 years; mean age 29 years) out of 1,896 patients with throat swab positive for H1N1 and clinical and laboratory findings indicative of viral influenza. All 167 patients were studied by chest X-ray (CXR), and 20 patients with positive CXR and worsening clinical condition also underwent computed tomography (CT). The following findings were evaluated on both modalities: interstitial reticulation (IR), nodules (N), ground-glass opacities (GGO), consolidations (CONS), bacterial superinfection and pulmonary complications. RESULTS: Ninety of 167 patients had positive CXR results. Abnormalities identified on CXR, variously combined and distributed, were as follows: 53 IR, 5 N, 13 GGO, 50 CONS; the predominant combination was represented by six GGO with CONS. Of the 20 CXR-positive cases also studied by CT, 17 showed pathological findings. The abnormalities identified on CT, variously combined and distributed, were as follows: 14 IR, 2 N, 5 GGO; the predominant combination was 10 GGO with CONS. Despite the differences between the two modalities, the principle radiological findings of bacterial superinfection were tree-in-bud pattern, consolidation with air bronchogram, and pleural and pericardial effusion. Fifteen of the 20 patients studied by both CXR and chest CT showed respiratory complications with bilateral and diffuse CONS on CXR and CT. Six of 15 died: 4/6 of acute respiratory distress syndrome and 2/6 of multiple organ failure. CONCLUSIONS: Our study describes the radiological and clinical characteristics of a large population of patients affected by H1N1 influenza. CXR and chest CT identified the site and extent of the pulmonary lesions and documented signs of bacterial superinfection and pulmonary complications.


Subject(s)
Influenza A Virus, H1N1 Subtype , Influenza, Human/diagnostic imaging , Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Contrast Media , Female , Humans , Infant , Inpatients , Male , Middle Aged , Pandemics , Radiography, Thoracic , Reverse Transcriptase Polymerase Chain Reaction
12.
Radiol Med ; 116(6): 905-18, 2011 Sep.
Article in English, Italian | MEDLINE | ID: mdl-21509559

ABSTRACT

PURPOSE: The aim of this study was to analyse mammographic and ultrasound (US) features of fibroadenoma and phyllodes tumour and assess the diagnostic accuracy of mammography, US and US-guided core needle biopsy (CNB) in the differential diagnosis of these two lesions. MATERIALS AND METHODS: The results of the pathological analysis of excision biopsy of 83 lesions (67 fibroadenomas and 16 phyllodes tumours) were correlated with the findings of mammography, US and US-guided CNB performed on 83 women with a mean age of 45.4 years (range 18-75 years). RESULTS: Sensitivity, specificity and positive predictive values compared with histology were 45%, 50% and 79% for mammography, 34%, 69% and 82% for US and 81%, 97% and 87% for US-guided CNB (p=0.001). CONCLUSIONS: The almost complete overlap between mammographic and US parameters of fibroadenomas and phyllodes tumours and the absence of pathognomonic features preclude the differential diagnosis between the two histological types. US-guided CNB is a valuable tool in the differential diagnosis between fibroadenoma and phyllodes tumour.


Subject(s)
Biopsy, Needle/methods , Breast Neoplasms/diagnostic imaging , Fibroadenoma/diagnostic imaging , Phyllodes Tumor/diagnostic imaging , Adolescent , Adult , Aged , Diagnosis, Differential , Female , Humans , Mammography , Middle Aged , Predictive Value of Tests , Sensitivity and Specificity , Ultrasonography, Interventional , Ultrasonography, Mammary
13.
Radiol Med ; 116(3): 389-406, 2011 Apr.
Article in English, Italian | MEDLINE | ID: mdl-20981501

ABSTRACT

PURPOSE: The aim of this study was to compare magnetic resonance (MR) enteroclysis with MR enterography to verify whether nasoenteric intubation in patients affected by Crohn's disease can provide supplementary information to that afforded by MR study of the small bowel. MATERIALS AND METHODS: In a 12-month period, 40 patients (28 women and 12 men, mean age 35 years) affected by Crohn's disease underwent MR imaging. Distension of the small-bowel loops was obtained by administering polyethylene glycol: 15 patients were given the mixture by mouth (MR enterography), whereas the remaining 25 received it via nasoenteric intubation (MR enteroclysis). Our study protocol included morphological sequences taken before and after intravenous injection of contrast medium and real-time functional sequences. Accuracy criteria for the execution of the examinations were designed according to 11 bands. RESULTS: Complete distension of the small-bowel loops was obtained in the 25 patients who underwent MR enteroclysis, with the additional advantage of a suitable assessment of those segments involved in the pathological process. This was not the case for the 15 patients who underwent MR enterography, because both the jejunum and the small-bowel loops appeared partially collapsed. CONCLUSIONS: MR enteroclysis is the most effective technique for studying the small bowel in Crohn's disease, as it not only provides a suitable morphological assessment but also supplies functional information.


Subject(s)
Crohn Disease/pathology , Intestine, Small , Intubation, Gastrointestinal/methods , Magnetic Resonance Imaging/methods , Adult , Chi-Square Distribution , Contrast Media/administration & dosage , Female , Gadolinium/administration & dosage , Humans , Male , Polyethylene Glycols/administration & dosage , Predictive Value of Tests , Sensitivity and Specificity
14.
Radiol Med ; 116(6): 829-41, 2011 Sep.
Article in English, Italian | MEDLINE | ID: mdl-21509555

ABSTRACT

PURPOSE: Acute mesenteric ischaemia (AMI) is a life-threatening vascular emergency with a high mortality rate. Early diagnosis is the key to reducing its mortality rate and improving the quality of life. Although computed tomography (CT) is still the gold standard for acute intestinal disorders, over the last few years, magnetic resonance imaging (MRI) has become a useful alternative tool. An animal model of AMI was developed in order to study the effectiveness of MRI in early detection of this condition and to observe lesion evolution. METHODS: Thirty Sprague Dawley rats were randomly divided into two groups (n=15): in the first group, after laparotomy, the animals underwent ligation of the superior mesenteric artery (SMA), followed by macroscopic monitoring and histological evaluation; in the second, ischaemia was induced by squeezing a loop around the SMA 3 days before evaluation with 7-T micro-MRI. RESULTS: Macroscopically, a reflex spastic ileus followed by reflex hypotonic ileus and colour changes in some of the loops were detected. MRI evidenced luminal dilatation with air-fluid levels, free intraperitoneal fluid and bowelwall oedema. Histological analysis confirmed ischaemia and earlier damage involving the central portion of the ileum. CONCLUSIONS: This model shows the correct sequence of events during arterial AMI and demonstrates that MRI can be recommended for early diagnosis of these lesions.


Subject(s)
Ischemia/diagnosis , Magnetic Resonance Imaging/methods , Mesenteric Vascular Occlusion/diagnosis , Acute Disease , Animals , Disease Models, Animal , Early Diagnosis , Random Allocation , Rats , Rats, Sprague-Dawley
15.
Monaldi Arch Chest Dis ; 75(4): 235-40, 2011 Dec.
Article in English | MEDLINE | ID: mdl-22462311

ABSTRACT

Niemann-Pick disease type B is caused by a deficiency in acid sphingomyelinase activity; among the six variants of Niemann-Pick disease known to date, it is the most frequently associated with lung involvement, a major cause of morbidity and mortality in this subtype in patients of all ages. Nevertheless, the vast majority of reports in the literature concern infantile forms, while less reported is, for several reasons, the onset in adults being consequently still poorly understood and characterized its clinical, radiographic and functional manifestations. We report a case of a 37 years-old female patient affected by subtype B since she was an infant, operated for aortic valve replacement two years before and came to our attention for the onset of a worsening exertional dyspnoea which proved, through a series of functional tests and radiological exams, to be a consequence of the diffuse lung involvement by the metabolic disorder; we performed a review on this topic through a Medline search of all the available "adult-onset" case reports published since the first description in 1964, also considering the possible association between NPDB and, more generally lysosomal storage disorders, and the valvular disease, already suggested by several Authors in previous works.


Subject(s)
Lung Diseases/etiology , Niemann-Pick Disease, Type B/complications , Adult , Age of Onset , Diagnosis, Differential , Disease Progression , Dyspnea/etiology , Female , Humans , Lung/pathology , Niemann-Pick Disease, Type B/diagnostic imaging , Niemann-Pick Disease, Type B/epidemiology , Niemann-Pick Disease, Type B/pathology , Tomography, X-Ray Computed
16.
Nutr Metab Cardiovasc Dis ; 20(3): 208-16, 2010 Mar.
Article in English | MEDLINE | ID: mdl-19939648

ABSTRACT

Diabetic cardiomyopathy is a ventricular dysfunction in the absence of coronary artery disease, valvular or hypertensive heart disease. The mechanisms underlying diabetic cardiomyopathy may involve metabolic disturbances, myocardial fibrosis, small vessel disease, microcirculation abnormalities, cardiac autonomic neuropathy and insulin resistance. Diagnostic problems emerge because no specific disease pattern characterizes the disease and because there may be coexistence in diabetes of coronary artery disease and hypertension as independent but compounding causes of biochemical, anatomical and functional alterations impairing cardiac function. In this paper we will review the role of nuclear imaging today, concentrating on the diagnostic capabilities of radionuclide ventriculography, to study the effect of insulin resistance and, more extensively, gated-single photon emission computed tomography with Tc-99m labelled agents. A broad analysis will be dedicated to: 1) positron emission tomography using perfusion agents, with the potential to quantify resting and stress blood flow and coronary flow reserve; 2) radionuclide procedures evaluating aerobic and anaerobic cardiac metabolism; and 3) cardiac neurotransmission imaging, studying the autonomic neuropathy.


Subject(s)
Cardiomyopathies/diagnostic imaging , Diabetes Complications/diagnostic imaging , Autonomic Nervous System Diseases/diagnostic imaging , Cardiac-Gated Single-Photon Emission Computer-Assisted Tomography , Coronary Circulation , Exercise Test , Glucose/metabolism , Heart/diagnostic imaging , Heart/innervation , Humans , Insulin Resistance , Myocardium/metabolism , Oxidation-Reduction , Positron-Emission Tomography , Radionuclide Ventriculography
17.
Radiol Med ; 115(4): 539-50, 2010 Jun.
Article in English, Italian | MEDLINE | ID: mdl-20058095

ABSTRACT

PURPOSE: The aim of this study was to assess the computed tomography (CT) features of intrapulmonary congenital cystic diseases in adults and to correlate the imaging features with the pathological findings, with emphasis on the oncogenic potential of the lesions. MATERIALS AND METHODS: We retrospectively reviewed the CT scans in three institutions from August 1996 to December 2008, of nine patients (six men, three women; mean age 48.6 years; range 26-75 years) who had histological diagnosis of pulmonary cystic disease after surgery. Six patients had a diagnosis of intrapulmonary bronchogenic cyst (IBC), and three had a type-I cystic adenomatoid malformation (CAM). In one case, intralobar sequestration (ILS) was associated with type-I CAM. RESULTS: Three patients were symptomatic and six were asymptomatic. On CT scans, IBCs showed homogeneous fluid attenuation (n=2), air-fluid level (n=2), air attenuation (n=1) or soft-tissue attenuation (n=1). The surrounding lung tissue showed areas of band-like linear attenuation in three IBCs, atelectasia in two and mucocele-like areas in one. On CT, type-I CAM appeared as a unilocular cystic lesion with air-fluid level (n=1) or air content (n=1). Both cases had thin walls surrounded by normal lung parenchyma. ILS appeared as a fluid-filled cyst with afferent and efferent vessels. Of the six IBCs, one occurred in the upper right lobe, two in the middle lobe and three in the lower right lobe. Of the three type-I CAMs, one was in the upper left lobe and one in the middle lobe. The type-I CAM associated with ILS was located in the left lower lobe. CONCLUSIONS: The similar CT patterns preclude differentiation between IBC and type-I CAM. Surgical resection of all intrapulmonary cystic lesions detected in adults is mandatory because type-I CAM is a precursor of mucinous bronchioloalveolar carcinoma.


Subject(s)
Bronchogenic Cyst/diagnostic imaging , Cystic Adenomatoid Malformation of Lung, Congenital/diagnostic imaging , Tomography, Spiral Computed , Adult , Aged , Bronchogenic Cyst/pathology , Cystic Adenomatoid Malformation of Lung, Congenital/pathology , Female , Humans , Male , Middle Aged , Retrospective Studies
18.
Radiol Med ; 115(8): 1330-9, 2010 Dec.
Article in English, Italian | MEDLINE | ID: mdl-20852954

ABSTRACT

PURPOSE: The authors sought to evaluate the effectiveness of ultrasound (US)-guided aspiration and ethanol sclerotherapy in treating endometrial cysts and adopt this procedure as an alternative to surgery. MATERIALS AND METHODS: Fifty consecutive patients with an average age of 25.2 years [standard deviation (SD) 6.5; range 16-40 years) and US diagnosis of endometrial cyst who were pregnant or presenting with high anaesthesia risk, adhesions or who refused surgery underwent US-guided aspiration of a total of 54 endometrial cysts (40 with transabdominal approach and the remaining 14 with transvaginal approach) and ethanol sclerotherapy. RESULTS: The procedure was successful in all patients. Follow-up imaging was carried out at 12 h, 24 h, 15 days, 3 months, 6 months and 12 months. After 12 months, four patients (8%) showed recurrence, three of whom opted for a second session of US-guided aspiration and ethanol sclerotherapy. CONCLUSIONS: US-guided aspiration and sclerotherapy with 95% ethanol provides a valid alternative to surgery in treating endometrial cysts.


Subject(s)
Cysts/therapy , Endometriosis/therapy , Sclerotherapy/methods , Ultrasonography, Interventional , Adolescent , Adult , Cysts/diagnostic imaging , Endometriosis/diagnostic imaging , Ethanol/therapeutic use , Female , Humans , Sclerosing Solutions/therapeutic use , Treatment Outcome
19.
Eat Weight Disord ; 15(3): e186-9, 2010 Sep.
Article in English | MEDLINE | ID: mdl-21150253

ABSTRACT

We assessed the relation between season of birth and eating disorder symptoms and personality characteristics in a sample of 880 women with eating disorders and 580 controls from two Price Foundation Studies. Eating disorder symptoms were assessed using the Structured Interview of Anorexic and Bulimic Disorders and the Structured Clinical Interview for DSM-IV. Personality traits were assessed using the Temperament and Character Inventory and the Frost Multidimensional Perfectionism Scale. Date of birth was obtained from a sociodemographic questionnaire. No significant differences were observed 1) in season of birth across eating disorder subtypes and controls; nor 2) for any clinical or personality variables and season of birth. We found no evidence of season of birth variation in eating disorders symptoms or personality traits. Contributing to previous conflicting findings, the present results do not support a season of birth hypothesis for eating disorders.


Subject(s)
Feeding and Eating Disorders , Personality , Adolescent , Adult , Age Factors , Aged , Diagnostic and Statistical Manual of Mental Disorders , Feeding and Eating Disorders/epidemiology , Feeding and Eating Disorders/physiopathology , Feeding and Eating Disorders/psychology , Female , Humans , Middle Aged , Parturition , Seasons , Surveys and Questionnaires , Young Adult
20.
Acta Radiol ; 49(8): 895-901, 2008 Oct.
Article in English | MEDLINE | ID: mdl-18608013

ABSTRACT

BACKGROUND: Intramyocardial course, an inborn coronary anomaly, is defined as a segment of a major epicardial coronary artery that runs intramurally through the myocardium; in particular, we distinguish myocardial bridging, in which the vessel returns to an epicardial position after the muscle bridge, and intramyocardial course, which is described as a vessel running and ending in the myocardium. PURPOSE: To evaluate the prevalence of myocardial bridging and intramyocardial course of coronary arteries as defined by multidetector computed tomography (MDCT) angiography. MATERIAL AND METHODS: The study population consisted of 242 consecutive patients (211 men, 31 women; mean age 59+/-6 years) with atypical chest pain admitted to our hospital between December 2004 and September 2006. All MDCT examinations were performed using a 16-detector-row scanner (Aquilion 16 CFX; Toshiba Medical System, Tokyo, Japan). Patients with heart rate above 65 bpm received 50 mg atenolol orally for 3 days prior to the MDCT scan, or they increased their usual therapy with beta-blockers, in order to obtain a prescan heart rate <60 bpm. Curved multiplanar and 3D volume reconstructions were performed to explore coronary anatomy. RESULTS: In 235 patients, the CT scan was successful and images were appropriate for evaluation. The prevalence of myocardial bridging and intramyocardial course of coronary arteries was 18.7% (47 cases) in our patient population. In 30 segments (63.8%), the vessels ran and ended in the myocardium. In the remaining 17 segments (36.2%), the vessels returned to an epicardial position after the muscle bridge. We found no difference in the prevalence of this inborn coronary anomaly when comparing different clinical characteristics of the study population (sex, age, body-mass index [BMI], etc.). The mean length of the subepicardial artery was 7 mm (range 5-12 mm), and the mean depth in the diastolic phase was 1.9 mm (range 1.2-2.3 mm). There was no significant difference of diameter in these segments between the different R-R phases examined. CONCLUSION: Our study is in agreement with major angiographic literature reporting a prevalence of myocardial bridging and intramyocardial course between 0.5% and 33%. MDCT technology represents a useful, noninvasive imaging method to assess and evaluate the location, depth, and length of this anatomical variation.


Subject(s)
Coronary Angiography/methods , Coronary Vessel Anomalies/diagnosis , Coronary Vessel Anomalies/epidemiology , Tomography, X-Ray Computed/methods , Chest Pain , Contrast Media/administration & dosage , Electrocardiography , Female , Humans , Imaging, Three-Dimensional/methods , Iopamidol/analogs & derivatives , Male , Middle Aged , Observer Variation , Prevalence , Radiographic Image Enhancement/methods
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