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LIPF  -  lipase, gastric

Bos taurus

 
 
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High impact information on LIPF

 

Biological context of LIPF

  • The lipolysis of butter oil in a hollow-fiber reactor containing an immobilized calf pregastric esterase was studied at 40 degrees C and at pH values of 4.0, 5.0, 6.0, and 7 [5].
  • Corpora lutea from Day 200 pregnant cows secrete more PGE and PGF alpha in vitro than Day 14 CL of the estrous cycle when incubated in control medium without treatments (p < or = 0.05) [6].
 

Anatomical context of LIPF

  • With the high-fat diet, lipid digestion would occur in two phases; firstly, part of the fat would be lipolyzed quickly by pregastric esterase before clot formation in the abomasum; secondly, the rest of the lipids, slowly released by progressive lysis of the coagulum would be digested under the action of gastric and pancreatic lipases [7].
  • Fat digestion is markedly aided by gastric lipase and, in breast-fed infants, the bile salt-dependent lipase of human milk [8].
  • Expanded blastocysts were frozen and thawed in 1.4 M glycerol with 0.25 M sucrose (GL), 1.6 M propylene glycol (PG), 1.8 M ethylene glycol (EG), or 1.3 M ethylene glycol monomethyl ether (EME) as cryoprotectants using a one-step method [9].
  • The concerted action of purified bovine gastric lipase and human pancreatic colipase-dependent lipase and colipase, or crude human pancreatic juice, in the digestion of human milk triacylglycerols was explored in vitro [10].
  • It is concluded that norgestamet in Synchromate-B ear implants or progesterone in a CIDR alters NO or ET-1-induced secretion of PGE by bovine caruncular endometrium and could interfere with implantation by altering the PGE:PGF2alpha ratio resulting in increased embryonic losses during early pregnancy [11].
 

Associations of LIPF with chemical compounds

  • Calf pregastric esterase exhibits a unique specificity for fatty acids 4:0 to 10:0 and preferentially hydrolyzes the primary ester position of glycerin [12].
  • The viability of ICM cells of frozen-thawed embryos with each cryoprotectant was lower (GL, 72.7%; PG, 67.8%; EG, 77.5%; EME, 74.7%) than that of unfrozen embryos (84.4%) [9].
  • In Experiment 2, concentrations of PGE and PGF2alpha increased (P< or =0.05) with time in all treatment groups of all three synchronization regimens [11].
  • In vivo progestin treatments inhibit nitric oxide and endothelin-1-induced bovine endometrial prostaglandin (PG) E (PGE) secretion in vitro [11].
  • In this study ovine blastocysts, produced in vivo or in vitro, were cryopreserved by vitrification in EFS40 (40% ethylene glycol (EG), 18% ficoll and 0.5 M sucrose) or GFS40 (40% glycerol (GL), 18% ficoll and 0.5 Mol sucrose) [13].
 

Analytical, diagnostic and therapeutic context of LIPF

References

  1. Inhibition studies on calf pregastric esterase: the enzyme has no functional thiol group. Timmermans, M.Y., Reekmans, G., Teuchy, H.J., Kupers, L.P. Biochem. J. (1996) [Pubmed]
  2. Studies on the inhibition of pancreatic and carboxylester lipases by protamine. Tsujita, T., Matsuura, Y., Okuda, H. J. Lipid Res. (1996) [Pubmed]
  3. The cDNA sequence encoding bovine pregastric esterase. Timmermans, M.Y., Teuchy, H., Kupers, L.P. Gene (1994) [Pubmed]
  4. Effect of pH on the production of lipolyzed butter oil by a calf pregastric esterase immobilized in a hollow-fiber reactor: I. uniresponse kinetics. Lessard, L.P., Hill, C.G. Biotechnol. Bioeng. (2000) [Pubmed]
  5. Effect of pH on the production of lipolyzed butter oil by a calf pregastric esterase immobilized in a hollow-fiber reactor: II. Multiresponse kinetics. Lessard, L.P., Hill, C.G. Biotechnol. Bioeng. (2000) [Pubmed]
  6. Effects of luteinizing hormone (LH), PGE2, 8-Epi-PGE1, 8-Epi-PGF2 alpha, trichosanthin and pregnancy specific protein B (PSPB) on secretion of prostaglandin (PG) E (PGE) or F2 alpha (PGF2 alpha) in vitro by corpora lutea (CL) from nonpregnant and pregnant cows. Weems, Y.S., Lammoglia, M.A., Vera-Avila, H.R., Randel, R.D., Sasser, R.G., Weems, C.W. Prostaglandins Other Lipid Mediat. (1998) [Pubmed]
  7. Plasma lipids, ketone bodies, and glucose concentrations in calves fed high- and low-fat milk replacers. Bazin, R.C., Brisson, G.J. J. Dairy Sci. (1976) [Pubmed]
  8. Digestion in the newborn. Hamosh, M. Clinics in perinatology. (1996) [Pubmed]
  9. Postthaw viability of the inner cell mass of in vitro-matured/in vitro-fertilized bovine embryos frozen in various cryoprotectants. Takagi, M., Sakonju, L., Otoi, T., Hamana, K., Suzuki, T. Cryobiology (1994) [Pubmed]
  10. Fatty acids generated by gastric lipase promote human milk triacylglycerol digestion by pancreatic colipase-dependent lipase. Bernbäck, S., Bläckberg, L., Hernell, O. Biochim. Biophys. Acta (1989) [Pubmed]
  11. In vivo progestin treatments inhibit nitric oxide and endothelin-1-induced bovine endometrial prostaglandin (PG) E (PGE) secretion in vitro. Weems, Y.S., Randel, R.D., Tatman, S., Lewis, A.W., Neuendorff, D.A., Weems, C.W. Prostaglandins Other Lipid Mediat. (2005) [Pubmed]
  12. Pregastric esterase and other oral lipases--a review. Nelson, J.H., Jensen, R.G., Pitas, R.E. J. Dairy Sci. (1977) [Pubmed]
  13. Vitrification of in vivo and in vitro produced ovine blastocysts. Zhu, S.E., Zeng, S.M., Yu, W.L., Li, S.J., Zhang, Z.C., Chen, Y.F. Anim. Biotechnol. (2001) [Pubmed]
 
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