General interest

Lentle, R.G. and  Janssen P (2011) The Physical Processes of Digestion. Springer Verlag, New York

Lentle, R.G. Jannsen P (2009). A review of the roles of filtration and expression in the processing of digesta with high solid phase content. Comparative Biochemistry and Physiology A 154 1-9.

R. G. Lentle and P. Janssen P. (2008) Physical characteristics of digesta and their influence on flow and mixing in the mammalian intestine: a review. Journal of Comparative Physiology (B). 178; 673-690 DOI: 10.1007/s00360-008-0264-x

 R. G. Lentle and P. W. Janssen (2009). Manipulating digestion with foods designed to change the physical characteristics of digesta. Critical Reviews in Food Science and Nutrition 50 130-145

Dennis W.H. Müller1, Judith Caton2, Daryl Codron1, Angela Schwarm, Roger Lentle, W. Jürgen Streich, Jürgen Hummel, Marcus Clauss. (2011) Phylogenetic constraints on digesta separation: variation in fluid throughput in the digestive tract in mammalian herbivores. Comparative Physiology and Biochemistry 160 207-220

The Rheology of Digesta

Lentle, RG Stafford, KJ, Bekkour, K, Aserevujanon, P, Sylvester, S, Hemar, Y. (2009) Changes in the viscoelastic behaviour of the rumenal digesta mat of sheep fed on pasture or chaffed lucerne hay. (In Press) Journal of Animal Physiology and Animal nutrition 94 495-504.

R. G. Lentle, Y. Hemar, C.E. Hall (2006). Viscoelastic behaviour aids extrusion from and re-absorption of the liquid phase into the digesta plug; creep rheometry of hindgut digesta in the common brushtail possum Trichosurus vulpecula. Journal of Comparative Physiology (B) 176; 469-475.

R. G. Lentle Y Haemar, C. Hall and K. Stafford (2005). Periodic fluid phase extrusion, a new rheologic and permeametric model for the mixing of intestinal digesta of an herbivore Trichosurus vulpecula. Journal of Comparative Physiology (B) 175; 337-347.

R. G. Lentle, K. J. Stafford, M. S. Kennedy, and S. J. Haslett (2002). Rheological properties of digesta suggest little radial or axial mixing in the fore-stomach of the tammar (Macropus eugenii) and the parma (Macropus parma) wallaby. Physiological Zoology 75 (6) 572-582.

Gut movement

R. G. Lentle, P.W. M. Jannsen, P. Asvarujanon, P. Chambers, K. J. Stafford and Y. Hemar (2007). High definition mapping of circular and longitudinal motility in the terminal ileum of the brushtail possum Trichosurus vulpecula with watery and viscous perfusates. Journal of Comparative Physiology (B) 177; 543-556.

R. G. Lentle, P. W. Jannsen, P. Asvarujanon, P. Chambers P, K. J. Stafford and Y. Hemar (2008). High definition spatiotemporal mapping of contractile activity in the isolated proximal colon of the rabbit. Journal of Comparative Physiology 178; 257-268.

Janssen, PWM, Lentle, RG, Hulls C , Ravindran V, Amerah AM (2009) Spatiotemporal mapping of the motility of the isolated caecum of the chicken.  J Comp Physiol B 179; 593-604

R.G. Lentle R., P. W. M. Janssen P W.M, P Chambers K Stafford and C Hulls .(2011)  Quantification of the effects of the volume and viscosity of gastric contents on antral and fundic activity in the rat stomach maintained ex vivo. Digestive Disease Sciences 55 3349-3360.

C. Hulls R. G. Lentle C. de Loubens P.W. Janssen P. Chambers K. J. Stafford (2011) Spatiotemporal mapping of ex vivo motility in the caecum of the rabbit. J Comp Physiol DOI 10.1007/s00360-0001-0610-2

P. W. M. Janssen, R. G. Lentle, P. Asvarujanon, P. Chambers, K. J. Stafford and Y. Hemar (2007). Characterisation of mixing due to intestinal motility in the small intestine of the brushtail possum Trichosurus vulpecula by dye dilution with simultaneous spatio-temporal mapping. Journal of Physiology (London) 582; 1239-1248.