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Topic: Motility



  
 Motility - Wikipedia, the free encyclopedia
Motility is also a term refering to the movement of stool through the intestines.
All living things need some basic raw materials and energy for survival, and as the world is not generally kind enough to deliver these things right to the organism, many have evolved ways of bringing themselves to where they want to be.
Contraction of the actin cortex at the posterior end helps weaken older focal points.
http://en.wikipedia.org/wiki/Motility   (2112 words)

  
 Motility of dendritic spines in visual cortex in vivo: Changes during the critical period and effects of visual ...
Longitudinal studies of spine motility in vivo (20) and in vitro
At P42, however, the deprivation-induced reduction in spine motility is mediated by a stabilization of stubby spines.
Motility of dendritic spines in visual cortex in vivo: Changes during the critical period and effects of visual deprivation
http://www.pnas.org/cgi/content/full/100/26/16024   (4515 words)

  
 eMedicine - Esophageal Motility Disorders : Article by Abdullah Fayyad, MD
Reassurance is important in patients with spastic motility disorders, especially in the setting of noncardiac chest pain.
Prolonged, nonexertional chest pain that is meal-related and relieved with antacids favors an esophageal etiology for chest pain.
Whether or not symptomatic relief is achieved, prognosis in patients with spastic esophageal motility disorders is favorable.
http://www.emedicine.com/MED/topic740.htm   (7611 words)

  
 American Family Physician: Gastrointestinal motility disorders
Disorders of gastrointestinal motility are common and are frequently treated by both primary care physicians and subspecialists.
The physiologic function of the small intestine is coordinated with the stomach in the area of the pyloric sphincter.
In the past 10 years, much has been learned about the mechanisms of gastrointestinal physiology, and subtle disorders of gastrointestinal motility can now be better identified in patients with normal gross anatomy.
http://www.findarticles.com/p/articles/mi_m3225/is_n3_v53/ai_18047821   (1358 words)

  
 Glucose acts in the CNS to regulate gastric motility during hypoglycemia -- Shi et al. 285 (5): 1192 -- AJP - ...
Glucose effects on gastric motility and tone evoked from the rat dorsal vagal complex.
of gastric motility and tone was observed after stabilization
sensitively inhibits antral motility and fundic tone in the
http://ajpregu.physiology.org/cgi/content/full/285/5/R1192   (6280 words)

  
 Actin-Based Motility of Intracellular Microbial Pathogens -- Goldberg 65 (4): 595 -- Microbiology and Molecular Biology ...
ActA is sufficient to mediate actin-based motility in the absence
mechanisms of microbial actin-based motility is the subject of
microbes that utilize actin-based motility do so by means of these
http://mmbr.asm.org/cgi/content/full/65/4/595   (10250 words)

  
 index
We are the North American source for information on nerve and muscle disorders within the gut (aka functional or motility problems).
GPDA offers a refreshing, scientific-based, focus to reassure you that these problems of digestive distress are not psychologically induced.
For some they develop into a chronic pattern without relief.
http://digestivedistress.com/index.htm   (796 words)

  
 UNC Center for Functional GI & Motility Disorders :: Patient Care
The format for the conference is a discussion of cases that have been seen by the gastroenterology and urogynecology services, focusing on cases that present complex decision making about patient care or important teaching points.
Diagnostic anorectal motility tests for fecal incontinence, constipation or rectal pain
However, diagnostic evaluations and clinical care are now managed by other faculty -- Dr.
http://www.med.unc.edu/medicine/fgidc/patient_care_motility.htm   (317 words)

  
 Phenomenology
His phenomenology addressed the role of attention in the phenomenal field, the experience of the body, the spatiality of the body, the motility of the body, the body in sexual being and in speech, other selves, temporality, and the character of freedom so important in French existentialism.
Merleau-Ponty's conception of phenomenology, rich in impressionistic description of perception and other forms of experience, emphasizing the role of the experienced body in many forms of consciousness.
The scope of Phenomenology of Perception is characteristic of the breadth of classical phenomenology, not least because Merleau-Ponty drew (with generosity) on Husserl, Heidegger, and Sartre while fashioning his own innovative vision of phenomenology.
http://plato.stanford.edu/entries/phenomenology   (9015 words)

  
 Maurice Merleau-Ponty [Internet Encyclopedia of Philosophy]
Our motility testifies that the body cannot be the mere servant of consciousness, since "in order that we may be able to move our body towards an object, the object must first exist for it, our body must not belong to the realm of the in-itself" (PP 139).
This Sartrean term will be accorded with more significance as we progress, but for the moment, one only need see that Merleau-Ponty is making explicit that the aspects of an object revealed to an individual are dependent upon their bodily position.
Another factor against conceiving of the body as being completely constituted, and an object in-itself, is the fact that it is that by which there are objects.
http://www.iep.utm.edu/m/merleau.htm   (12751 words)

  
 motility
patients who are scheduled for surgery of the esophagus have motility studies to help the surgeon plan the operation.
patients who have chest pain that is not explained by studies of the heart or lungs may have motility studies to help determine
Motility studies are frequently used to diagnose swallowing problems in patients who do not have any evidence of blockage
http://www.albanygi.com/motility.htm   (264 words)

  
 Effect of gastric acid suppressants on human gastric motility -- Parkman et al. 42 (2): 243 -- Gut
changes in gastric motility were seen irrespective of the method
of each study drug on each motility parameter were assessed using
of view, gastric emptying and motility studies should be interpreted
http://gut.bmjjournals.com/cgi/content/full/42/2/243   (4428 words)

  
 Control of mitochondrial motility and distribution by the calcium signal: a homeostatic circuit -- Yi et al. 167 (4): ...
Data are the means of nine experiments with uncoupler and four experiments for the control.
motility and dynamic changes in motility may affect in many
The aims of the present work were to determine how physiological
http://www.jcb.org/cgi/content/full/167/4/661   (6819 words)

  
 Cytosolic Free Calcium and the Cytoskeleton in the Control of Leukocyte Chemotaxis -- PETTIT 78 (4): 949 -- ...
Shape oscillations of human neutrophil leukocytes: characterization and relationship to cell motility.
A subpopulation analysis of FMLP stimulated granulocytes migrating in filters.
The majority of recent research in this area has focused primarily on the amoeboid stage of D.
http://physrev.physiology.org/cgi/content/full/78/4/949   (7571 words)

  
 Antro-duodenal Motility Study - Digestion and digestive-related information on MedicineNet.com
Other tests can help with the evaluation of motility disorders, including upper gastrointestinal x-rays, gastric emptying studies, and electrogastrograms, but no other test directly measures the ability of the stomach and intestinal muscles to contract like the antro-duodenal motility study.
Are there any alternatives to an antro-duodenal motility study?
Such patients may be treated with drugs to stimulate contraction, such as metoclopramide (Reglan).
http://www.medicinenet.com/antro-duodenal_motility_study/article.htm   (661 words)

  
 Sluggish Motility in the Gastrointestinal Tract
This is a condition that doesn't really exist in the opinion of a growing number of veterinarians who care for rabbits.
One needs to look at the GIT physiology of the rabbit to understand this condition.
Eventually these patients can become seriously ill and die if the condition is not treated.
http://www.rabbit.org/journal/3-7/gi.html   (2021 words)

  
 eMedicine - Constipation : Article by Marc D Basson, MD, PhD
Pathophysiology: Constipation is divided, with considerable overlap, into issues of stool consistency (hard, painful stools) and issues of defecatory behavior (infrequency, difficulty in evacuation, straining during defecation).
Activity: Although some controversy exists about the effectiveness of exercise in constipation treatment, encouraging as much aerobic exercise as possible seems reasonable.
Nyam DC, Pemberton JH: Current advances and controversies in the surgical therapy for anorectal motility disorders.
http://www.emedicine.com/med/topic2833.htm   (7650 words)

  
 Esophageal Motility Disorders
The history and treatment of patients with this pattern is quite variable.
Difficulty swallowing liquids or solids, heartburn, regurgitation, and atypical (or non-cardiac) chest pain may be symptoms of an esophageal motility disorder.
Clearly, further research into the areas of visceral hypersensitivity and psychological factors in patients with motility disturbances will be of benefit.
http://www.aboutgerd.org/motility.html   (833 words)

  
 Does Prostaglandin Improve Sperm Motility?
By Sarah Snyder, MU Swine Production - This article summarises the results of an experiment to evaluate if the addition of prostaglandin to diluted boar semen has any effect on sperm motility.
- By Sarah Snyder, MU Swine Production - This article summarises the results of an experiment to evaluate if the addition of prostaglandin to diluted boar semen has any effect on sperm motility.
Sperm motility was analyzed using two computer assisted sperm analysis (CASA) systems.
http://www.thepigsite.com/FeaturedArticle?Display=1281   (754 words)

  
 Membrane hyperpolarization removes inactivation of Ca2+ channels, leading to Ca2+ influx and subsequent initiation of ...
do not affect sperm motility, suggesting that no cAMP-dependent
Furthermore, the cAMP level does not change during
of sperm motility, the recovery from inactivation may result in
http://www.pnas.org/cgi/content/full/97/5/2052   (4554 words)

  
 Motility Agar
Inoculate into a tube of TTC motility agar with tetrazolium dye with a NEEDLE, all the way to the bottom.
Inoculate into a tube of SIM media with a NEEDLE, all the way to the bottom.
SIM is actually 3 tests in one, but, on the other hand, the motility with tetrazolium is much easier to read for motility.
http://www.rlc.dcccd.edu/MATHSCI/reynolds/MICRO/lab_manual/motility.html   (264 words)

  
 Gastrointestinal Motility and Smooth Muscle
Alternating contraction and relaxation of the longitudinal muscle in the wall of the gut also provides effective mixing of its contents.
It follows that derangements in gastrointestinal motility can cause or result from digestive tract disease and that drugs which alter gastrointestinal motility affect digestive function.
Indeed, the patterns of motility seen in the gut are characteristic of smooth muscle, which has properties distinctly different from skeletal muscle.
http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/basics/gi_motility.html   (376 words)

  
 News & Features: In silica emergence and function of Listeria's actin-appropriative motility mechanism
We discuss the model design, compare behaviors of the computational and biological systems, use the model to explain observed features of the bacterial motion, and identify observable experimental correlates of our hypotheses through which our interpretations may be confirmed or rejected.
We describe a methodology to characterize such emergent behavior using a detailed computer simulation of both biochemical kinetics and mechanical dynamics.
We simulate explicitly a large number of detailed interactions of both a biochemical and mechanical nature, representing all protein—protein binding interactions with on-rate and off-rate kinetic equations.
http://www.iscid.org/boards/ubb-get_topic-f-1-t-000218.html   (2242 words)

  
 Scleroderma World - Gastroparesis
Gastroparesis happens when nerves to the stomach are damaged or stop working.
Gastroparesis is the failure of the stomach to empty because of decreased gastric motility.
http://www.sdworld.org/autoimmune/gastro.html   (271 words)

  
 What is the value of the new motility laser sensor system to simultaneously record esophageal body and lower esophageal ...
What is the value of the new motility laser sensor system to simultaneously record esophageal body and lower esophageal sphincter pressures in ambulatory patients?
Compared to the conventional waterperfused manometry device, recent clinical studies have shown a higher sensitivity using 24-hour ambulatory motility monitoring to detect the intermittent appearance of abnormal esophageal body motility parameters [3].
Although stationary manometry is the gold standard to diagnose esophageal motility disorders, shortcomings of the established waterperfused motility device (like sensor dislocation during swallowing and respiration as well as large expenditures for a water container and recording equipment), initiated the development of new ambulatory manometry technologies.
http://www.hon.ch/OESO/free/Vol_5_Eso_Junction/Articles/art065.html   (269 words)

  
 AMERICAN MOTILITY SOCIETY
American Motility Society Course on Gastrointestinal Motility in Clinical Practice
Research Grant Opportunities (click here for further information)
Jointly sponsored by the American Motility Society, European Society of Neurogastroenterology and Motility, The Functional Brain Gut Research Group and the International Motility Group
http://www.motilitysociety.org   (187 words)

  
 GI Motility Education Centre - GIMEC
Our goal is to improve the quality of care of patients suffering from gastrointestinal motility through educational programs and aids directed to general practitioners, residents and specialists.
We are available to provide advice and education directly to physicians but are unable to respond to individual medical cases and urge patients to contact their local doctor for advice.
The GI Motility Education Centre at Queen’s University, Kingston, Ontario, Canada was established in April 1995.
http://meds.queensu.ca/gimec/gimec.htm   (97 words)

  
 ACHALASIA AND ESOPHAGEAL MOTILITY DISORDERS
Most esophageal motility disorders don't require specific therapy.
When symptoms are particularly bothersome, some patients are treated with drugs that relax the muscles of the esophagus, helping to decrease the discoordinated activity.
Achalasia is one of several subtypes of esophageal motility disorders.
http://www.sts.org/doc/4120   (1177 words)

  
 Contribution of Ena/VASP Proteins to Intracellular Motility of Listeria Requires Phosphorylation and Proline-rich Core ...
A crucial step in the life cycle of intracellular pathogens such as the Gram positive bacterium Listeria monocytogenes is
motility has been extensively studied, little is known about the
in contrast with previous models for Listeria motility, the F-actin-binding
http://www.molbiolcell.org/cgi/content/full/13/7/2383   (7417 words)

  
 Biology and Mechanism of Trypanosome Cell Motility -- Hill 2 (2): 200 -- Eukaryotic Cell
This review will discuss biological and mechanistic aspects
Holwill, M. Some physical aspects of the motility of ciliated and flagellated microorganisms.
Recent studies on Plasmodium and Toxoplasma have demonstrated
http://ec.asm.org/cgi/content/full/2/2/200   (5021 words)

  
 Motility Program
Results obtained from the motility tests lead to new therapies helping to relieve the patients’ symptoms.
Once diagnosed, patients are treated with a variety of drug therapies,interventional endoscopy or surgical options that are best suited for their condition.
The Motility Program is for patients who have —
http://www.cpmc.org/services/gi/motility.html   (516 words)

  
 JHBMC: Motility and Digestive Disorders: Facts
Motility Disorders encompass a variety of conditions, including: gastroparesis; achalasia; gastroesophageal reflux disease; chronic intestinal pseudoobstruction; constipation and irritable bowel syndrome.
Motility disorders refer to abnormal intestinal contractions, such as spasms and intestinal paralysis, that can result in the inability to eat (which may require patients to receive intravenous nutrition) and severe abdominal pain, nausea, vomiting, maldigestion, weight loss, diarrhea, constipation and incontinence.
Below is a listing and short description of some of the most serious and bothersome motility disorders and digestive diseases.
http://www.jhbmc.jhu.edu/Motil/motilfac.html   (894 words)

  
 European Society for Neurogastroenterology and Motility
Italian Association for the Study of Neurogastroenterology and Gastrointestinal Motility
Spanish Group for the Study of Neurogastroenterology and Gastrointestinal Motility
Egyptian Group for the Study of Gastrointestinal Motility
http://www.neurogastro.org   (45 words)

  
 Bicarbonate Stimulation of Boar Sperm Motility via a Protein Kinase A--Dependent Pathway: Between-Cell and ...
stimulation of motility was characterized by an increase in
Bicarbonate Stimulation of Boar Sperm Motility via a Protein Kinase A—Dependent Pathway: Between-Cell and Between-Ejaculate Differences Are Not Due to Deficiencies in Protein Kinase A Activation
calyculin stimulated motility, it failed to increase the overall
http://www.andrologyjournal.org/cgi/content/abstract/23/4/557   (602 words)

  
 Regulation of bacterial motility in response to low pH in Escherichia coli: the role of H-NS protein -- Soutourina et ...
The effect of detrimental conditions on bacterial motility in
bacterial motility in response to an acidic environment is mediated
Regulation of bacterial motility in response to low pH in Escherichia coli: the role of H-NS protein -- Soutourina et al.
http://mic.sgmjournals.org/cgi/content/abstract/148/5/1543   (242 words)

  
 Motility articles, support groups, and resources
GERD and Motility disorder (Gastroenterology and Liver Diseases Forum)
Severe Gastrointestinal Motility Disorder (Gastroenterology and Liver Diseases Forum)
Questions on Motility symptoms (Gastroenterology and Liver Diseases Forum)
http://www.medhelp.org/HealthTopics/Motility.html   (412 words)

  
 Differential Media - Motility Medium
Motile organisms are usually easily seen as they move among each other in separate directions.
Ignoring growth at the surface of the medium and also between the medium and the wall of the tube, one should be able to distinguish motile from non-motile organisms such as in the photo at right.
In our lab, determining the presence or absence of flagella is done by "indirect" methods, as we detect whether or not motility is evident under growth conditions made as favorable as possible for the organisms.
http://www.jlindquist.net/generalmicro/dfmotility.html   (211 words)

  
 Worm Sperm Motility
This "treadmilling" of the cytoskeleton is thought to generate the force that makes the pseudopod membrane flow.
The Roberts lab studies the biochemical basis of sperm motility in the parasitic nematode, Ascaris.
Amoeboid motility without actin: insights into the molecular mechanism of locomotion using the major sperm protein (MSP) of nematodes.
http://www.mcb.arizona.edu/wardlab/treadingvid.html   (171 words)

  
 GI Motility - Our Expert Team
The sophisticated motility tests available through the program are reviewed by Cedars-Sinai motility specialists, who report the results back to the patient's referring physician, usually within in 24 hours.
The GI Motility Program at Cedars-Sinai uses an interdisciplinary team approach to ensure that each patient receives individualized care from experts in the fields of gastroenterology and GI motility.
Cedars-Sinai is known around the world for its leading-edge research, attention to quality patient care and expertise.
http://www.csmc.edu/2627.html   (155 words)

  
 Bacterial Motility
Spirochaetes are helical bacteria which have a specialized internal structure known as the axial filament which is responsible for rotation of the cell in a spiral fashion and consequent locomotion (e.g.
Gliding motility is the movement of cells over surfaces without the aid of flagella, a trait common to many bacteria, yet the mechanism of gliding motility is unknown.
Motion can be achieved by one of three mechanisms:
http://www-micro.msb.le.ac.uk/video/motility.html   (1103 words)

  
 Neurogastroenterology and Motility - Journal Information
An evaluatation of the effects of a combination probiotic on symptoms and colonic transit in patients with irritable bowel syndrome (IBS) and significant bloating.
The field of gastrointestinal motility has undergone phenomenal growth and change in the last three decades since it emerged as a distinct speciality.
Neurogastroenterology and Motility provides a forum where current issues and advances relating to the motor function of the GI tract can be presented and discussed.
http://www.blackwellpublishing.com/journal.asp?ref=1350-1925   (320 words)

  
 Evolution of the bacterial flagellum
Prokaryotes undoubtedly have additional motility systems that have not yet been discovered.  Only one eukaryote system, the cilium or eukaryotic flagellum, is included in the table, because it is often confused with the prokaryote systems even though it is totally distinct.  Many other eukaryote motility systems, not relevant here, are not listed.
Furthermore, homologous components are tied to all manner of cellular responses to the environment; the central two-component signal transduction system (consisting of the histidine kinase CheA and the response regulator CheY in flagellar chemotaxis) is ancient, found in all three domains, and used for diverse functions.  Their evolution is discussed by Koretke et al.
Cavalier-Smith’s suggestion that stirring the periplasmic fluid may have been a precursor to primitive motility is similar to Rizzotti’s main suggestion and will be discussed in the next section.
http://www.talkdesign.org/faqs/flagellum.html   (7839 words)

  
 RIS - Bacterial Motility and Behavior
For a review of bacterial motility see Berg, H.C. Motile behavior of bacteria".
We also have worked on other bacteria that swim without flagella (a cyanobacterium, Synechococcus) or glide over surfaces (Mycoplasma, that moves by an unknown mechanism, and Pseudomonas aeruginosa, that uses thin fibers called type IV pili).
http://webmac.rowland.org/labs/bacteria/index.html   (139 words)

  
 Bacterial Twitching Motility
This is the grappling hook model for twitching motility.
There are nice web pages describing how laser tweezers work and what they can be used for from: The Laser Physics Group in Umea and Bill Guilford's Group at the University of Virginia.
The functions of twitching motility in bacterial infection are discussed further in a recent review article by Maggie So and me [view abstract
http://www.webcom.com/alexey/moviepage.html   (1387 words)

  
 A Mechanistic Model of the Motility of Actin Filaments on Myosin
In a sense, the in vitro motility assay, which involves the motion of e.g.
Following our previous work, and using actin-myosin motility experiments on flat homogeneous; flat patterned and micro-profiled surfaces we propose a new mechanical model of actin motility on myosin, wherein a filament is modeled as a chain of beads connected by harmonic springs, with a limitation on the stretching of the filament.
The motility of acto-myosin is crucial to cell motility, muscular contraction, cell division etc.; and recently to several hybrid dynamic devices based on protein molecular motors.
http://www.cr.org/Nanotech2004/showabstract.html?absno=595   (239 words)

  
 Cell (biology) - Wikipedia, the free encyclopedia
It acts to organize and maintain the cell's shape; anchors organelles in place; helps during endocytosis, the uptake of external materials by a cell; and moves parts of the cell in processes of growth and motility.
There are a great number of proteins associated with the cytoskeleton, each controlling a cell's structure by directing, bundling, and aligning filaments.
http://en.wikipedia.org/wiki/Cell_(biology)   (3668 words)

  
 motility documentation index
Introduction to motility and motif types [ text ]
motility is a C++ library for searching DNA sequences with several different types of motif representations, from the simplest case (string literals!) to IUPAC-style motifs (e.g.
The current version of motility is 0.5, and it's available either from the Cartwheel CVS archive on SourceForge (see sf.net/projects/cartwheel/) under
http://cartwheel.caltech.edu/motility   (110 words)

  
 Cytoskeleton, Cell Motility & Motors - Virtual Library of Biochemistry & Cell Biology
Migration 101: Movies and Photos - Movement of different types of cells, such as fibroblasts, neurons, muscle cells and Dictyostelium, from a number of research groups.
A Video Tour of Cell Motility - An animated story of cell motility based on a collection of studies by Vic Small's group.
The Interactive Fly: Stress Activated and Cell Motility Feedback Pathway - "The Jun-N-terminal kinase (JNK) activated MAP kinase cascade links the Rho family of GTP-binding proteins to transcription of Jun." (Society for Developmental Biology)
http://www.biochemweb.org/cytoskeleton.shtml   (975 words)

  
 How Bacteria Swim
So it is a complex combination of swimming and tumbling that keeps them in areas of higher food concentrations.
A longer, larger, silent version of this clip may be purchased.
These two types of motility can be seen in
http://www.cellsalive.com/animabug.htm   (128 words)

  
 Motility Determinants in WASP Family Proteins -- Yarar et al. 13 (11): 4045 -- Molecular Biology of the Cell
with the Arp2/3 complex, suggesting that they stimulate motility
Motility Determinants in WASP Family Proteins -- Yarar et al.
truncation derivatives by using a bead-based motility assay.
http://www.molbiolcell.org/cgi/content/abstract/13/11/4045   (360 words)

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