STUDY QUESTION Does uterine peristalsis influence the chance of clinical pregnancy in an embryo transfer cycle? SUMMARY ANSWER The uterine peristaltic wave frequency before embryo transfer is inversely related to the clinical pregnancy rates in fresh and frozen-thawed embryo transfer cycles. WHAT IS KNOWN ALREADY Uterine peristalsis participates in regulating fluid migration after mock embr...

Palliation of dysphagia has driven the development a Robotic Soft Esophagus (RoSE), which provides novel in vitro platform for esophageal stent testing and food viscosity studies. In RoSE, peristaltic wave generation control were done an open-loop manner since conduit lacked visibility embedded sensing capability. Hence, this work, RoSE version 2.0 (RoSEv2.0) is designed with Time Of Flight (TO...

Peristalsis begins in the lung as soon as the smooth muscle (SM) forms, and persists until birth. As the prenatal lung is filled with liquid, SM action can, through lumen pressure, deform tissues far from the immediately adjacent tissues. Stretching of embryonic tissues has been shown to have potent morphogenetic effects. We hypothesize that these effects are at work in lung morphogenesis. In o...

INTRODUCTION Until now, peristalsis has been the only known method of urine transport. The main objective of this paper was to study urinary tract function - especially the upper urinary tract, the ureter - from a new mechanical point of view. The physical (physical dual valves) and biological basis (biological dual valves) of a new functional model is presented based on previous observations a...

Motor control is a complex process that requires interplay among the nervous system, muscles and environment. The simple anatomy, well-characterized muscle movements and ample resources for molecular and cellular dissection make the pharynx of the nematode C. elegans an attractive model system for the study of motor control. The C. elegans pharynx shows two clear muscle movements that are essen...

Peristaltic waves of the ureteric smooth muscles move urine down from the kidney, a process that is commonly defective in congenital diseases. To study the mechanisms that control the initiation and direction of contractions, we used video microscopy and optical mapping techniques and found that electrical and contractile waves began in a region where the renal pelvis joined the connective tiss...