Exocrine secretions of bees V. Terpenoid esters in the Dufour's secretions ofPanurginus bees (Hymenoptera: Andrenidae)

1983 ◽  
Vol 9 (2) ◽  
pp. 277-283 ◽  
Author(s):  
R. M. Duffield ◽  
S. E. Harrison ◽  
D. Maglott ◽  
F. O. Ayorinde ◽  
J. W. Wheeler
Author(s):  
Russell A. Jurenka ◽  
John W. Neal ◽  
Ralph W. Howard ◽  
James E. Oliver ◽  
Gary J. Blomquist

1984 ◽  
Vol 64 (5) ◽  
pp. 263-264 ◽  
Author(s):  
S. KATO ◽  
B. A. YOUNG

The effect of cold exposure (0–3 °C vs. 18–21 °C) on pancreatic exocrine secretion was investigated in sheep with chronically implanted bile duct catheters. At comparable feeding levels, cold exposure enhanced pancreatic juice flow by more than 50%, but its protein content and enzymatic activity were reduced. Only in cold-exposed sheep with increased food intake was there an increased daily output of pancreatic protein and enzymes. Key words: Pancreatic juice, protein, enzymes, cold exposure.


1982 ◽  
Vol 8 (2) ◽  
pp. 535-543 ◽  
Author(s):  
R. M. Duffield ◽  
W. E. LaBerge ◽  
J. H. Cane ◽  
J. W. Wheeler
Keyword(s):  

Diabetes ◽  
1977 ◽  
Vol 26 (1) ◽  
pp. 7-10 ◽  
Author(s):  
R. M. Wilson ◽  
G. Boden ◽  
L. S. Shore ◽  
N. Essa-Koumar

1996 ◽  
Vol 271 (4) ◽  
pp. G714-G721 ◽  
Author(s):  
M. I. Townsley ◽  
C. Erlanson-Albertsson ◽  
A. Ohlsson ◽  
C. Rippe ◽  
R. K. Reed

The question addressed in this study was whether enterostatin, the pancreatic procolipase activation peptide, modulates intestinal hyaluronan turnover via lymph. In anesthetized cats, segments of ileum were surgically isolated from the proximal and distal gut, the draining lymphatic was cannulated, and the segment was autoperfused in situ. In several groups, concentrations of immunoreactive enterostatin in lymph were compared with that in plasma at baseline and elevated lymph flow and in the absence and presence of fat absorption. The baseline ratio of lymph enterostatin to that in plasma (L/P) in the absence of fat absorption was 1.44 +/- 0.29 compared with 4.93 +/- 0.42 after cream feeding (P < 0.05). In a separate group, when the intestinal lumen was perfused for 2 h with a mixture of oleic acid and taurocholate, enterostatin L/P doubled compared with baseline. At high lymph flows, enterostatin concentrations fell in all groups, resulting in an L/P of 0.47 +/- 0.09 (P < 0.05) in the absence of fat absorption, 0.77 +/- 0.35 after oleic acid, and 1.26 +/- 0.13 in the cream-fed group. These changes correlate with the pattern of hyaluronan efflux from the ileum into lymph after fat absorption [R.K. Reed, M.I Townsley, V.H. Pitts, T.C. Laurent, and A.E. Taylor. Am. J. Physiol, 263 (Gastrointest. Liver Physiol. 26): G6-G11, 1992] However, in separate groups when enterostatin was introduced into ileum, either as a close intra-arterial bolus or via the intestinal lumen, there were no resultant changes in efflux of hyaluronan from the intestine into lymph. In conclusion, despite the fact that delivery of pancreatic exocrine secretions to the ileal lumen was blocked in this model, enterostatin concentration in lymph increased after fat absorption. Nonetheless, it seems clear that enterostatin does not modify intestinal hyaluronan turnover.


Biorheology ◽  
1972 ◽  
Vol 9 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Martin I. Lorin ◽  
Carolyn R. Denning ◽  
Irwin D. Mandel

1960 ◽  
Vol 199 (3) ◽  
pp. 387-394 ◽  
Author(s):  
J. A. Uram ◽  
Leo Friedman ◽  
O. L. Kline

Pancreatectomy in the rat, sufficient to induce severe diabetes, is without practical effect on the absorption of the nutrients of purified diets. Attempts to reduce the contribution of small residual fragments of pancreas revealed that the rat is capable of normal or near normal digestion with less than 1% of the contribution of its exocrine pancreas. The ability of the duct-ligated rat to re-establish exocrine flow was demonstrated, and a procedure was developed to circumvent this adaptation. This produced rats with highly variable abilities to absorb nutrients. The intestine is implicated as a major factor determining the ability of an animal to absorb nutrients in the absence of pancreatic exocrine secretions.


1996 ◽  
Vol 62 (9) ◽  
pp. 1353-1356 ◽  
Author(s):  
Kenneth A. Newell ◽  
David S. Bruce ◽  
David C. Cronin ◽  
E. Steve Woodle ◽  
J. Michael Millis ◽  
...  

1987 ◽  
Vol 13 (2) ◽  
pp. 253-263 ◽  
Author(s):  
M. D. Tomalski ◽  
M. S. Blum ◽  
T. H. Jones ◽  
H. M. Fales ◽  
D. F. Howard ◽  
...  
Keyword(s):  

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