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| 1 | Role of sex hormones in gastrointestinal motility in pregnant and non-pregnant rats显示文摘AIM: To correlate gastric contractility, gastrointestinal transit, and hormone levels in non-pregnant(estrous cycle) and pregnant rats using noninvasive techniques. METHODS: Female rats(n = 23) were randomly divided into(1) non-pregnant,(contractility, n =6; transit, n = 6); and(2) pregnant(contractility, n = 5; transit, n = 6). In each estrous cycle phase or at 0, 7, 14, and 20 d after the confirmation of pregnancy, gastrointestinal transit was recorded by AC biosusceptometry(ACB), and gastric contractility was recorded by ACB and electromyography. After each recording, blood samples were obtained for progesterone and estradiol determination. RESULTS: In the estrous cycle, despite fluctuations of sex hormone levels, no significant changes in gastrointestinal motility were observed. Days 7 and 14 of pregnancy were characterized by significant changes in the frequency of contractions(3.90 ± 0.42 cpm and 3.60 ± 0.36 cpm vs 4.33 ± 0.25 cpm) and gastric emptying(168 ± 17 min and 165 ± 15 min vs 113 ± 15 min) compared with day 0. On these same days, progesterone levels significantly increased compared with control(54.23 ± 15.14 ng/m L and 129.96 ± 30.52 ng/mL vs 13.25 ± 6.31 ng/mL). On day 14, we observed the highest level of progesterone and the lowest level of estradiol compared with day 0(44.3 ± 15.18 pg/mL vs 24.96 ± 5.96 pg/mL). CONCLUSION: Gastrointestinal motility was unaffected by the estrous cycle. In our data, high progesterone and low estradiol levels can be associated with decreased contraction frequency and slow gastric emptying. | Juliana Fernandes Matos Madileine Francely Americo Yuri Karen Sinzato Gustavo Tadeu Volpato Luciana Aparecida Corá Marcos Felipe Freitas Calabresi Ricardo Brandt Oliveira Debora Cristina Damasceno Jose Ricardo Arruda Miranda | 2016 | World Journal of Gastroenterology2016，22，25： | 5 |
| 2 | Effect of bauhinia forficata aqueous extract on the maternal-fetal outcoine and oxidative stress biomarkers of streptozotocin- induced diabetic rats 显示文摘 | Volpato GT Damasceno DC Rudge MV | 2008 | J Ethnopharmacol2008，116，： | 1 |
| 3 | The omega -3 polyunsat- urated fatty acid eicosapentaenoic acid inhibits mouse MC -26 color- ectal cancer cell liver metastasis via inhibition of PGE2 - dependent cell motility显示文摘 | Hawcroft G Volpato M Marston G | 2012 | Br J Pharmacol2012，166，： | 1 |
| 4 | Myasthenia gravis: a changing pattern of incidence显示文摘 | I. Casetta E. Groppo R. Gennaro E. Cesnik L. Piccolo S. Volpato E. Granieri | 2010 | Journal of Neurology2010，，12： | 1 |
| 5 | Environmental blue light prewnts stress in the fish Nile tilapia显示文摘 | Volpato G I Barreto R E | 2001 | Brazilian Journal of Me:lical and Biological Research2001，34，8： | 1 |
| 6 | Cardiovascular disease, interleukin-6, and risk of mortality in older women: the women's health and aging study显示文摘 | Volpato S Guralnik JM Ferrucci L | 2001 | Circulation2001，103，7： | 1 |
| 7 | Lipase-catalysed ethanolysis of soybean oil in a solvent-free system using central composite design and response surface methodology显示文摘 | Costa Rodrigues R Volpato G Ayub Maz | 2008 | J Chem Tech- nol Biotechno12008，83，： | 1 |
| 8 | Modulation of affeetive symptoms and resting state activity by brain stimulation in a treatment-resistant case of obsessive-compulsive disorder显示文摘 | Volpato C Piccione F Cavinato M | 2013 | Neurocase2013，19，4： | 1 |
| 9 | Recent evidence and potential mechanisms underlying weight gain and insulin resistance due to atypical antipsychotics 显示文摘 | Volpato AM Zugno AI Quevedo J | 2013 | Rev Bras Psiquiatr2013，35，3： | 1 |
| 10 | Environmental blue light prevents stressin the fish Nile tilapia显示文摘 | Volpato G L Barreto R E | 2001 | Brazilian Journal of Medical andBiological Research2001，34，8： | 1 |
| 11 | Determinazione Quantitativa HPLC Di Acido Sorbico E Acido Benzoico Nei Prodotti Lattiero-Caseari显示文摘 | TIPPINO P M VOLPATO R | 1990 | Sci Tecnol Latt Cas1990，41，： | 1 |
| 12 | Serum thyroxine level and cognitive decline in euthyroid older women显示文摘 | Volpato S Guralnik JM Fried LP | 2002 | Neurology2002，58，7： | 1 |
| 13 | Cognitive-behavioral group therapy in obsessive-compulsive disorder:a randomized clinical trial显示文摘 | Volpato Cordioli A Heldt E Braga Bochi D | 2003 | Psychother Psychosom2003，72，4： | 1 |
| 14 | Effect of metabolic control on homocysteine levels in type 2 diabetic patients:a 3-year follow-up显示文摘 | Passaro A Calzoni F Volpato S | 2003 | Journal of Internal Medicine2003，，3： | 1 |
| 15 | Relationships between fasting plasma insulin,anthropometrics,and metabolic parameters in a very old healthy population显示文摘 | CARANTONI M ZULIANI G VOLPATO S | 1998 | Metabolism1998，47，5： | 1 |
| 16 | Association between thyroid dysfunction and total cholesterol level in an older biracial population:the health,aging and body composition study显示文摘 | Kanaya AM Harris F Volpato S | 2002 | Arch Intern Med2002，162，： | 1 |
| 17 | Shear-induced particle segregation in binary mixtures:Verification of a percolation theory显示文摘Granular materials composed of different-sized grains may experience undesired segregation.Segregation is detrimental for a lot of industries because it leads to an increase in production costs and wastes.For these reasons,the segregation phenomena have been intensively studied in the last decades,and a lot of models have been provided by many researchers.However,these models are mainly based on empirical relations rather than physical considerations.This paper aims to confirm the main assumptions made by Volpato,Tirapelle,and Santomaso(2020)in their percolation theory by means of DEM simulations.The simulated geometry is a tilting shear box filled with few tracer particles in a bed of coarser sized grains,and simulations are performed for a range of tilting frequencies and size ratios.The results provide meaningful insight on the mathematical model parameters and allow us to say that the percolation theory relies on physically consistent assumptions. | Monica Tirapelle Silvia Volpato Andrea C.Santomaso | 2021 | Particuology2021，19，4： | 1 |
| 18 | Radiation therapy and chemotherapy-induced oral mucositis显示文摘 | Volpato LE Silva TC Oliveira TM | 2007 | Braz J Otorhinolaryngol2007，73，4： | 1 |
| 19 | Neonatally induced mild diabetes in rats and its effect on maternal,placental,and fetal parameters显示文摘 | Sinzato YK Volpato GT Iessi IL | 2012 | Exp Diabetes Res2012，2012，10： | 1 |
| 20 | 2q37 as a Susceptibility Locus for Idiopathic Basal Ganglia Calcification (IBGC) in a Large South Tyrolean Family显示文摘 | Claudia Béu Volpato Alessandro De Grandi Ebba Buffone Maurizio Facheris Uwe Gebert Günther Schifferle Rudolf Sch?nhuber Andrew Hicks Peter P. Pramstaller | 2009 | Journal of Molecular Neuroscience2009，，3： | 1 |
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