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https://www.readbyqxmd.com/read/28432270/discriminating-between-virilizing-ovary-tumors-and-ovary-hyperthecosis-in-postmenopausal-women-clinical-data-hormonal-profiles-and-image-studies
#1
Viviane Dos Reis Vieira Yance, José Antonio Miguel Marcondes, Michelle Patrocíneo Rocha, Cristiano Roberto Grimaldi Barcellos, Wagner Silva Dantas, Ana Flavia Assis Avila, Ronaldo Hueb Baroni, Filomena Marino Carvalho, Sylvia Asaka Yamashita Hayashida, Berenice Bilharinho Mendonça, Sorahia Domenice
The presence of virilizing signs associated with high serum androgen levels in postmenopausal women is rare. Virilizing ovarian tumors (VOTs) and ovarian stromal hyperthecosis (OH) are the most common etiologies in virilized postmenopausal women. The differential diagnosis between these two conditions is often difficult. OBJECTIVE: To evaluate the contribution of clinical features, hormonal profiles and radiological studies to the differential diagnosis of VOT and OH. DESIGN: A retrospective study...
April 21, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28431496/the-phylogeny-of-fossil-whip-spiders
#2
Russell J Garwood, Jason A Dunlop, Brian J Knecht, Thomas A Hegna
BACKGROUND: Arachnids are a highly successful group of land-dwelling arthropods. They are major contributors to modern terrestrial ecosystems, and have a deep evolutionary history. Whip spiders (Arachnida, Amblypygi), are one of the smaller arachnid orders with ca. 190 living species. Here we restudy one of the oldest fossil representatives of the group, Graeophonus anglicus Pocock, 1911 from the Late Carboniferous (Duckmantian, ca. 315 Ma) British Middle Coal Measures of the West Midlands, UK...
April 21, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28425520/an-innovative-chemical-strategy-for-pcr-free-genetic-detection-of-pathogens-by-an-integrated-electrochemical-biosensor
#3
S Petralia, E L Sciuto, M L Di Pietro, M Zimbone, M G Grimaldi, S Conoci
An innovative chemical strategy integrated in a miniaturized electrochemical device was developed for sensitive detection of a pathogen genome (HBV virus) without any amplification step. The results show a limit of detection comparable to the standard qRT-PCR method (20 copies per reaction), paving the way to future development of genetic PoC devices addressing automatized and low-cost molecular diagnostics.
April 20, 2017: Analyst
https://www.readbyqxmd.com/read/28422368/safety-and-efficacy-of-pulmonary-vein-isolation-using-a-surround-flow-catheter-with-contact-force-measurement-capabilities-a-multicenter-registry
#4
Giuseppe Stabile, Paolo Di Donna, Vincenzo Schillaci, Antonio Di Monaco, Assunta Iuliano, Domenico Caponi, Francesco Urraro, Francesco Solimene, Massimo Grimaldi, Marco Scaglione
INTRODUCTION: Pulmonary vein (PV) isolation is the cornerstone of catheter ablation in patients with atrial fibrillation (AF). Surround flow and contact force (CF) measurement capabilities might enhance procedure efficacy and safety. We report on the safety and mid-term efficacy of a novel ablation catheter for PV isolation in patients with AF. METHODS AND RESULTS: Two hundred thirty-three consecutive patients (57±11 years, 76% males, 51% with structural heart disease) referred for paroxysmal (157) or persistent (76) AF, underwent PV isolation by a surround flow catheter with CF measurement capability in 4 centers...
April 19, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28422155/in-vitro-biocompatibility-study-of-sub-5%C3%A2-nm-silica-coated-magnetic-iron-oxide-fluorescent-nanoparticles-for-potential-biomedical-application
#5
Sabrina Foglia, Mario Ledda, Daniela Fioretti, Giovanna Iucci, Massimiliano Papi, Giovanni Capellini, Maria Grazia Lolli, Settimio Grimaldi, Monica Rinaldi, Antonella Lisi
Magnetic iron oxide nanoparticles (IONPs), for their intriguing properties, have attracted a great interest as they can be employed in many different biomedical applications. In this multidisciplinary study, we synthetized and characterized ultrafine 3 nm superparamagnetic water-dispersible nanoparticles. By a facile and inexpensive one-pot approach, nanoparticles were coated with a shell of silica and contemporarily functionalized with fluorescein isothiocyanate (FITC) dye. The obtained sub-5 nm silica-coated magnetic iron oxide fluorescent (sub-5 SIO-Fl) nanoparticles were assayed for cellular uptake, biocompatibility and cytotoxicity in a human colon cancer cellular model...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28419419/the-isoprenoid-derivative-n6-benzyladenosine-cm223-exerts-antitumor-effect-in-glioma-patient-derived-primary-cells-through-the-mevalonate-pathway
#6
Elena Ciaglia, Manuela Grimaldi, Mario Abate, Mario Scrima, Manuela Rodriquez, Chiara Laezza, Roberta Ranieri, Simona Pisanti, Pierangela Ciuffreda, Clementina Manera, Patrizia Gazzerro, Anna Maria D'Ursi, Maurizio Bifulco
BACKGROUND AND PURPOSE: N6-Isopentenyladenosine (i6A) is a modified nucleoside exerting in vitro and in vivo antiproliferative effects. We previously demonstrated that the i6A action is correlated to farnesyl pyrophosphate synthase (FPPS) expression and activity, a key enzyme involved in the mevalonate (MVA) pathway, which is found aberrant in brain cancer. To develop new anti-glioma strategies, we looked for other valuable compounds exhibiting improved activity as compared to i6A. EXPERIMENTAL APPROACH: we designed and synthesized i6A derivatives characterized by the introduction of diverse chemical moieties in the N6 position of adenosine and tested for their efficacy in U87 and primary derived patient's glioma cell model...
April 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28418837/rapamycin-promotes-differentiation-increasing-%C3%AE-iii-tubulin-neun-and-neurod-while-suppressing-nestin-expression-in-glioblastoma-cells
#7
Michela Ferrucci, Francesca Biagioni, Paola Lenzi, Stefano Gambardella, Rosangela Ferese, Maria Teresa Calierno, Alessandra Falleni, Alfonso Grimaldi, Alessandro Frati, Vincenzo Esposito, Cristina Limatola, Francesco Fornai
Glioblastoma cells feature mammalian target of rapamycin (mTOR) up-regulation which relates to a variety of effects such as: lower survival, higher infiltration, high stemness and radio- and chemo-resistance. Recently, it was demonstrated that mTOR may produce a gene shift leading to altered protein expression. Therefore, in the present study we administered different doses of the mTOR inhibitor rapamycin to explore whether the transcription of specific genes are modified. By using a variety of methods we demonstrate that rapamycin stimulates gene transcription related to neuronal differentiation while inhibiting stemness related genes such as nestin...
March 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28417933/radiogenomic-analysis-of-oncological-data-a-technical-survey
#8
REVIEW
Mariarosaria Incoronato, Marco Aiello, Teresa Infante, Carlo Cavaliere, Anna Maria Grimaldi, Peppino Mirabelli, Serena Monti, Marco Salvatore
In the last few years, biomedical research has been boosted by the technological development of analytical instrumentation generating a large volume of data. Such information has increased in complexity from basic (i.e., blood samples) to extensive sets encompassing many aspects of a subject phenotype, and now rapidly extending into genetic and, more recently, radiomic information. Radiogenomics integrates both aspects, investigating the relationship between imaging features and gene expression. From a methodological point of view, radiogenomics takes advantage of non-conventional data analysis techniques that reveal meaningful information for decision-support in cancer diagnosis and treatment...
April 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28416895/a-response-to-letter-to-the-editor-a-genetic-based-algorithm-for-personalized-resistance-training
#9
N Jones, J Kiely, B Suraci, D J Collins, D de Lorenzo, C Pickering, K A Grimaldi
No abstract text is available yet for this article.
March 2017: Biology of Sport
https://www.readbyqxmd.com/read/28416864/synthesis-of-structured-lipids-containing-behenic-acid-from-fully-hydrogenated-crambe-abyssinica-oil-by-enzymatic-interesterification
#10
Marilene D M Morselli Ribeiro, Chiu Chih Ming, Thiago I B Lopes, Renato Grimaldi, Anita J Marsaioli, Lireny A G Gonçalves
Low-calorie structured lipids (SLs) rich in behenic and oleic acids were produced by enzymatic (EI) and chemical interesterification (CI) of high oleic sunflower oil and fully hydrogenated Crambe abyssinica oil in proportions of 60:40, 50:50, 40:60 and 30:70 (w/w), respectively. The immobilized lipase from Thermomyces lanuginosus (Lipozyme TL IM) was used for 3 h at 70 °C at a dosage of 7% (w/w) free of organic solvents. The original blend (BE) and the reaction products were evaluated for their fatty acid (FA) and triacylglycerols (TAG) compositions, solid fat contents, thermal analysis, regiospecific distribution of the FA, microstructure and polymorphism...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28413191/length-scale-specific-crystalline-structural-changes-induced-by-molecular-randomization-of-pequi-oil
#11
Andréa Madalena Maciel Guedes, Rosemar Antoniassi, Melicia Cintia Galdeano, Renato Grimaldi, Mario Geraldo de Carvalho, Allan Eduardo Wilhelm, Alejandro Gregorio Marangoni
Pequi fruit (Caryocar brasiliense Camb) is considered important since its pulp has a high content of oil and carotenoids. The oil's triacylglycerols (TAGs) contain mainly oleic (~57%) and palmitic (~36%) fatty acids, distributed primarily among POO, POP/PPO, and OOO TAGs. It displays a tendency to fractionate upon storage and has a relatively low melting temperature (SFC of 4% at 25°C). Pequi oil was modified through chemical interesterification, which increased the PPP content to ~6%. This caused a flattening in the SFC-temperature profile, raising the end of melt temperature significantly (SFC of 4% at 39°C)...
April 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28405510/correlation-between-previous-treatment-with-braf-inhibitors-and-clinical-response-to-pembrolizumab-in-patients-with-advanced-melanoma
#12
Ester Simeone, Antonio Maria Grimaldi, Lucia Festino, Diana Giannarelli, Vito Vanella, Marco Palla, Marcello Curvietto, Assunta Esposito, Giuseppe Palmieri, Nicola Mozzillo, Paolo Antonio Ascierto
The optimal sequencing of targeted treatment and immunotherapy in the treatment of advanced melanoma is a key question and prospective studies to address this are ongoing. Previous observations suggest that treating first with targeted therapy may select for more aggressive disease, meaning that patients may not gain full benefit from subsequent immunotherapy. In a single-center retrospective analysis, we investigated whether response to pembrolizumab was affected by previous BRAF inhibitor therapy. A total of 42 patients with metastatic cutaneous or mucosal melanoma who had received previous treatment with ipilimumab were treated with pembrolizumab as part of the Italian expanded access program...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28403121/pheochromocytoma-crisis-in-icu-a-french-multicenter-cohort-study-with-emphasis-on-rescue-extracorporeal-membrane-oxygenation
#13
Bertrand Sauneuf, Nicolas Chudeau, Benoit Champigneulle, Claire Bouffard, Marion Antona, Nicolas Pichon, David Marrache, Romain Sonneville, Antoine Marchalot, Camille Welsch, Antoine Kimmoun, Bruno Bouchet, Elmi Messai, Sylvie Ricome, David Grimaldi, Jonathan Chelly, Jean-Luc Hanouz, Alain Mercat, Nicolas Terzi
OBJECTIVES: To describe the characteristics, management, and outcome of patients admitted to ICUs for pheochromocytoma crisis. DESIGN: A 16-year multicenter retrospective study. SETTING: Fifteen university and nonuniversity ICUs in France. PATIENTS: Patients admitted in ICU for pheochromocytoma crisis. INTERVENTIONS: None. MEASUREMENT AND MAIN RESULTS: We included 34 patients with a median age of 46 years (40-54 yr); 65% were males...
April 11, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28401943/signal-coverage-approach-to-the-detection-probability-of-hypothetical-extraterrestrial-emitters-in-the-milky-way
#14
Claudio Grimaldi
The lack of evidence for the existence of extraterrestrial life, even the simplest forms of animal life, makes it is difficult to decide whether the search for extraterrestrial intelligence (SETI) is more a high-risk, high-payoff endeavor than a futile attempt. Here we insist that even if extraterrestrial civilizations do exist and communicate, the likelihood of detecting their signals crucially depends on whether the Earth lies within a region of the galaxy covered by such signals. By considering possible populations of independent emitters in the galaxy, we build a statistical model of the domain covered by hypothetical extraterrestrial signals to derive the detection probability that the Earth is within such a domain...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28401527/fluid-intelligence-traits-of-personality-and-personality-disorders-in-a-cohort-of-adult-ks-patients-with-the-classic-47-xxy-karyotype
#15
D Liberato, S Granato, D Grimaldi, F M Rossi, N Tahani, D Gianfrilli, A Anzuini, A Lenzi, G Cavaggioni, A F Radicioni
PURPOSE: Klinefelter's syndrome (KS) is associated with specific neurobehavioral features and personality traits. The aim of our study was to investigate fluid intelligence, personality traits and personality disorders (PD) and possible correlations with testosterone in a cohort of adult KS patients. METHODS: We analyzed 58 adult KS patients with the classic 47, XXY karyotype. The Structured Clinical Interview for axis II disorders was used to assess DSM IV personality disorders...
April 11, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28398176/septic-shock-due-to-nsti-caused-by-actinomyces-turicensis-the-role-of-clinical-pharmacology-case-report-and-review-of-the-literature
#16
Milo Gatti, Laura Elisa Gasparini, Chiara Maria Grimaldi, Daniela Abbati, Stefano Clemente, Paolo Riccardo Brioschi, Roberto Fumagalli, Francesco Scaglione
Critical septic patients affected by necrotizing soft tissue infections (NSTI) require an early, aggressive and multidisciplinary treatment. Pharmacokinetic alterations in antibiotic therapy are peculiar in these infections. Clinical pharmacology represents a first step in this setting. We report a case of septic shock due to NSTI in which clinical pharmacology is taken into account.
April 11, 2017: Journal of Chemotherapy
https://www.readbyqxmd.com/read/28398025/hepatocarcinoma-genetic-and-epigenetic-features
#17
Angela Lombardi, Anna Grimaldi, Silvia Zappavigna, Gabriella Misso, Michele Caraglia
HCC is the third leading cause of cancer-related deaths worldwide, accounting for about 1 million deaths annually. The incidence of HCC is highest in Asia and Africa, where the endemic high prevalence of hepatitis B and hepatitis C strongly predisposes to the development of chronic liver disease and subsequent development of HCC. Patients with HCC generally present at an advanced stage due to compensated cirrhosis defined by the absence of pathognomonic symptoms, resulting in death within 6 to 20 months, suggesting an urgent need in treatment modalities that will dramatically decrease the mortality rate of HCC...
April 11, 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28391177/iliocapsularis-technical-application-of-fine-wire-electromyography-and-direction-specific-action-during-maximum-voluntary-isometric-contractions
#18
Peter Lawrenson, Alison Grimaldi, Kay Crossley, Paul Hodges, Bill Vicenzino, Adam Ivan Semciw
The iliocapsularis muscle of the anterior hip may play an important role in hip function, but no electromyographic (EMG) recordings have been made. This muscle provides the most substantial muscular attachment to the anterior hip capsule and is hypothesised to have a dynamic role to limit capsular impingement and to augment joint stability. Current understanding of the function of iliocapsularis is based on limited cadaveric and radiographic studies. Located deep over the hip joint it would require intramuscular fine-wire EMG to evaluate its activity directly with limited cross-talk from overlying muscles...
March 27, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28388407/chromatin-architecture-emerges-during-zygotic-genome-activation-independent-of-transcription
#19
Clemens B Hug, Alexis G Grimaldi, Kai Kruse, Juan M Vaquerizas
Chromatin architecture is fundamental in regulating gene expression. To investigate when spatial genome organization is first established during development, we examined chromatin conformation during Drosophila embryogenesis and observed the emergence of chromatin architecture within a tight time window that coincides with the onset of transcription activation in the zygote. Prior to zygotic genome activation, the genome is mostly unstructured. Early expressed genes serve as nucleation sites for topologically associating domain (TAD) boundaries...
April 6, 2017: Cell
https://www.readbyqxmd.com/read/28387811/dual-therapy-targeting-the-endocannabinoid-system-prevents-experimental-diabetic-nephropathy
#20
Federica Barutta, Serena Grimaldi, Roberto Gambino, Kiran Vemuri, Alexandros Makriyannis, Laura Annaratone, Vincenzo di Marzo, Graziella Bruno, Gabriella Gruden
Background.: The endocannabinoid system has been implicated in the pathogenesis of diabetic nephropathy (DN). We investigated the effect of combined therapy with AM6545, a 'peripherally' restricted cannabinoid receptor type 1 (CB1R) neutral antagonist, and AM1241, a cannabinoid receptor type 2 (CB2R) agonist, in experimental DN. Methods.: Renal function and structure, podocyte proteins and markers of both fibrosis and inflammation were studied in streptozotocin-induced diabetic mice treated for 14 weeks with vehicle, AM6545, AM1241 and AM6545-AM1241...
April 6, 2017: Nephrology, Dialysis, Transplantation
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