Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Ravinder K. Mittal"'
Publikováno v:
American journal of physiology. Gastrointestinal and liver physiology. 323(6)
Recent studies that utilized distension/contraction plots to study peristalsis reveal poor distension of the esophagus in patients with functional dysphagia and high-amplitude contractions [high-amplitude esophageal contractions (HAECs)] even though
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 323:G145-G156
Esophageal peristalsis consists of initial inhibition (relaxation) followed by excitation (contraction), both of which move sequentially in the aboral direction. Initial inhibition results in receptive relaxation and bolus-induced luminal distension,
Publikováno v:
Am J Physiol Gastrointest Liver Physiol
High-resolution esophageal manometry (HRM) in its current form assesses only the contraction phase of peristalsis. Degree of esophageal distension ahead of contraction is a surrogate of relaxation and can be measured from intraluminal esophageal impe
Autor:
Young Hoon Youn, Ali Zifan, Xinhuan Qiu, Hyun Joo Song, Ravinder K. Mittal, Melissa M. Ledgerwood-Lee
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 316:G519-G526
Each swallow induces a wave of inhibition followed by contraction in the esophagus. Unlike contraction, which can easily be measured in humans using high-resolution manometry (HRM), inhibition is difficult to measure. Luminal distension is a surrogat
Publikováno v:
Am J Physiol Gastrointest Liver Physiol
Cardiac loops have been used extensively to study myocardial function. With changes in cardiac pump function, loops are shifted to the right or left. Functional luminal imaging probe (FLIP) recordings allow for loop analysis of the anal sphincter and
Autor:
Johnny Fu, Valmik Bhargava, Ravinder K. Mittal, M. Raj Rajasekaran, My-Uyen Lilly Nguyen, Sadhana Kanoo
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 313:G581-G588
Studies show an age-related increase in the prevalence of anal incontinence and sphincter muscle atrophy. The Wnt/β-catenin signaling pathway has been recently recognized as the major molecular pathway involved in age-related skeletal muscle atrophy
Autor:
Gary G. Ghahremani, Ravinder K. Mittal, Dushyant Kumar, Erika Ruppert, Melissa M. Ledgerwood-Lee, Ali Zifan
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 313:G212-G219
The smooth muscles of the lower esophageal sphincter (LES) and skeletal muscles of the crural diaphragm (CD) provide a closure/antireflux barrier mechanism at the esophago-gastric junction (EGJ). A number of questions in regard to the pressure profil
Autor:
Ravinder K. Mittal
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 311:G431-G443
Muscularis propria throughout the entire gastrointestinal tract including the esophagus is comprised of circular and longitudinal muscle layers. Based on the studies conducted in the colon and the small intestine, for more than a century, it has been
Autor:
Catherine Sun, Ravinder K. Mittal, Jessica Swartz, Ali Zifan, Lori J. Tuttle, Sophia Roalkvam
Publikováno v:
American journal of physiology. Gastrointestinal and liver physiology. 315(5)
The functional luminal imaging probe (FLIP) has been used to measure the distensibility of the anal canal. We hypothesized that with increasing distension of the anal canal with FLIP there will be an increase in length of the anal sphincter muscle al
Autor:
Arash Babaei, Ravinder K. Mittal
Publikováno v:
American journal of physiology. Gastrointestinal and liver physiology. 315(5)
Cholecystokinin (CCK) is known to cause lower esophageal sphincter (LES) relaxation through the activation of inhibitory motor neurons. CCK receptor agonists increase the frequency of transient LES relaxation through a peripheral mechanism. Recent st