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Gastrointestinal motility and absorptive disorders in patients with inflammatory bowel diseases: Prevalence, diagnosis and treatment

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World Journal of Gastroenterology 2019年第31期25卷 4414-4426页

作者： Luísa Leite Barros Alberto Queiroz Farias Ali Rezaie Department of Gastroenterology University of Sao Paulo School of MedicineSao Paulo 05403-000Brazil Division of Gastroenterology Department of MedicineCedars Sinai Medical CenterLos AngelesCA 90048United States

Inflammatory bowel diseases(IBD),Crohns disease and ulcerative colitis,are chronic conditions associated with high morbidity and healthcare *** natural history of IBD is variable and marked by alternating periods of flare and *** though the use of newer therapeutic targets has been associated with higher rates of mucosal healing,a great proportion of IBD patients remain symptomatic despite effective control of *** symptoms may include but not limited to abdominal pain,dyspepsia,diarrhea,urgency,fecal incontinence,constipation or *** this setting,commonly there is an overlap with gastrointestinal(GI)motility and absorptive *** recognition of these conditions greatly improves patient care and may decrease the risk of ***,in this review we describe the prevalence,diagnosis and treatment of GI motility and absorptive disorders that commonly affect patients with IBD.

关键词： Inflammatory bowel diseases Crohn’s disease Ulcerative colitis Gastrointestinal motility and absorptive disorders Irritable bowel syndrome Small intestinal bacterial overgrowth Small intestinal fungal overgrowth Dyssynergic defecation Fecal incontinence Chronic intestinal pseudo-obstruction

Research on EM pulse protection property of plasma-microwave absorptive material-plasma sandwich structure

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Science China(Technological Sciences) 2010年第12期53卷 3221-3224页

作者： YUAN ZhongCai & SHI JiaMing State Key Laboratory of Pulse Power Laser Technology, Key Lab of Infrared and Low Temperature Plasma of Anhui Province, Hefei Electronic Engineering Institute, Hefei 230037, China State Key Laboratory of Pulse Power Laser Technology Key Lab of Infrared and Low Temperature Plasma of Anhui Province Hefei Electronic Engineering Institute Hefei China

A plasma-microwave absorptive material (MAM)-plasma sandwich structure is presented to protect the electronic device against high power electromagnetic pulse. The model of electromagnetic wave reflected by and transmitting through the structure is established. Based on the characteristic parameters of plasma generated by discharge and usual MAM, the electromagnetic transmissive properties of the sandwich structure are investigated by the method of finite difference in time domain. The results indicate that in a rather broad frequency range, the electromagnetic attenuations by the structure are obviously better than the sum of attenuations resulted from plasma and MAM respectively. The models and results presented are instructive for electromagnetic pulse protection.

关键词： plasma microwave absorptive material (MAM) sandwich structure electromagnetic pulse finite difference time domain

Nonlinear Intestinal Absorption of Fluorescein Isothiocyanate Dextran 4, 000 Caused by absorptive and Secretory Transporting System

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Pharmacology & Pharmacy 2011年第3期2卷 173-179页

作者： Mikio Tomita Rie Ohkubo Shohei Ouchi Chise Kawahata Masahiro Hayashi 不详

The mechanism of the nonlinear concentration dependence of the intestinal absorption of fluorescein isothiocyanate dextran 4,000 (FD-4) was studied using in situ rat intestinal loops and the in vitro Ussing-type chamber method. The intestinal absorption rate constant of FD-4, as evaluated by the intestinal loop method, increased significantly in a nonlinear fashion as the FD-4 concentration increased up to 0.2 mM and tended to decrease at concentrations higher than 0.2 mM. The mucosal-to-serosal permeation of FD-4 across rat ileal sheets, as evaluated by the in vitro Ussing-type chamber method, also increased in a nonlinear fashion in the low concentration range (0.01 - 0.02 mM), before decreasing as the concentration increased further, whereas serosal-to-mucosal permeation decreased in a concentration-dependent manner. In addition, mucosal-to-serosal flux and serosal-to-mucosal flux were increased and reduced in the presence of the metabolic inhibitor 2, 4-dinitrophenol, respectively. These results suggest that FD-4 is predominantly secreted into the intestinal lumen by an efflux transport system.

关键词： Fluorescein Isothiocyanate Dextran 4 000 Nonlinear absorptive Transport Nonlinear Secretory Transport Rat Ileal Intestine

The relationship between dietary methionine and growth,digestion,absorption,and antioxidant status in intestinal and hepatopancreatic tissues of sub-adult grass carp(Ctenopharyngodon idella)

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Journal of Animal Science and Biotechnology 2017年第4期8卷 970-983页

作者： Pei Wu Ling Tang Weidan Jiang Kai Hu Yang Liu Jun Jiang Shengyao Kuang ling tang Wuneng Tang Yongan Zhang Xiaoqiu Zhou Lin Feng Animal Nutrition Institute Sichuan Agricultural UniversityChengdu 611130China Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province Sichuan Agricultural UniversityChengdu 611130China Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education Sichuan Agricultural UniversityChengdu 611130China Animal Nutrition Institute Sichuan Academy of Animal ScienceChengdu 610066China Institute of Hydrobiology Chinese Academy of SciencesWuhan 430072China

Background: Methionine is an essential amino acid for fish. The present study was conducted to investigate the effects of dietary methionine on growth performance, digestive and absorptive ability, as well as antioxidant capacity in the intestine and hepatopancreas of sub-adult grass carp(Ctenopharyngodon idella).Results: Dietary methionine deficiency significantly decreased percentage weight gain(PWG), feed intake, feed efficiency and protein efficiency ratio, as well as activities of hepatopancreatic glutamate-oxaloacetate transaminase and muscle glutamate-pyruvate transaminase in sub-adult grass carp(P absorptive function and antioxidant capac

关键词： Antioxidant status Ctenopharyngodon idella Digestive and absorptive capacities Methionine

Second-order phase correction of NMR spectra acquired using linear frequency-sweeps

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Magnetic Resonance Letters 2022年第1期2卷 1-8,I0002页

作者： Zhehong Gan Ivan Hung National High Magnetic Field Laboratory 1800 East Paul Dirac DriveTallahasseeFL32310USA

NMR spectra acquired with experiments using frequency-sweeps such as the wide-band uniform-rate smooth truncation(WURST)spin-echo and Carr-Purcell-Meiboom-Gill(CPMG)sequences cannot be absorptively phased by using only conventional zerothand first-order phase *** of phase correction up to the secondorder is described for obtaining absorptive spectra,which have more desirable line shapes and noise properties than magnitude *** relationship of the second-order phase to the parameters of frequency sweeps is *** second-order phasing in the frequency-domain is equivalent to a point spread in the time-domain *** application of second-order phase correction is demonstrated with a wideline 35Cl CPMG spikelet spectrum.

关键词： Second-order phase Noise Line shape absorptive Dispersive Frequency sweep CHIRP WURST Adiabatic Broadband CPMG Spin-echo Wideline ^(35)Cl