Protein fecal

Calculate the true protein digestibility using the following equation True protein digestibility = [PI - (FP - MFP)]/PI x 100 where PI equals protein intake (g) FP is fecal protein (g) and MFP is the metabolic fecal protein (g). The MFP is calculated from the amount of protein in the feces of rats fed a protein-free diet (Sarwar, 1996). 

In the healthy bowel, fecal protein is largely derived from enterocytes shed from the mucosal surface and from intestinal secretions. The normal Gl loss of albumin is less than 10% of albumin catabofism, representing a daily loss of less than 1% to 2% of the serum protein pool. " Protein loss may be greatly increased in disease. In studies using Cr-labeled proteins, 0.1% to 0.7% of an injected dose was excreted in feces over 4 days in healthy subjects in protein-losing enteropathies this may increase to 40%, leading to hypoal-buminemia and edema. 

Indoor allergens usually are present perennially most important among these are house dust mite fecal proteins, animal dander, cockroaches, and certain mold species. Dust mite levels are on the rise, possibly due to the improved construction of energy-efficient homes and offices that result in reduced ventilation and increased humidity, use of wall-to-wall carpeting, and the popularity of cool water detergents and cold water washing. ... 

TABLE II. Summary of Effects of Various Diets Containing Proteinase Inhibitors on the Weight Gain, Feed Efficiency, Fecal Protein and Mortality of Newly Hatched Chicks. ... 

Bliss, D.Z. Stein, T.P. Schleifer, C.R. Settle, R.G. (1996). Supplementation with G A fiber increases fecal nitrogen excretion and lowers serum urea nitrogen concentration in chronic renal failure patients consuming a low-protein diet. The American Journal of Clinical Nutrition, Vol. 63, No.3, (March 1996), pp. 392-398, ISSN 0002-9165. 

Inflammatory (or exudative) diarrhea results from changes to the intestinal mucosa that damage absorption processes and lead to an increase in proteins and other products in the intestinal lumen with fluid retention. The presence of blood or fecal leukocytes in the stool is indicative of an inflammatory process. The diarrhea of inflammatory bowel disease (e.g., ulcerative colitis) is inflammatory in nature. 

RicinB fused to green fluorescent protein (GFP) Tobacco leaf and hairy root culture GFP-specific IgG present in serum IgA in semm and fecal matter. 10... 

When 20 mg/kg of methimazole was administered i.p. or orally to rats, urinary methimazole glucuronides accounted for 36-48% of the dose in 24 hours. The only other urinary metabolite accounted for 10-20% and was not characterized. An additional 14-20% of methimazole was excreted unchanged in 24 hour urine. The bile contained methimazole glucuronide and two unidentified metabolites. One of which was the same as the unidentified urinary metabolites. Plasma proteins bound 5% of methimazole which had no affinity for any specific tissue. Methimazole had a much greater CHCI3/H2O partition coefficient and 1 0 solubility than did propylthiouracil. Between 77 and 95% of the methimazole was excreted in the urine and approximately 10% in the bile. Since fecal excretion was neglegible an enter-ohepatic circulation was present. The half life of urinary excretion was 5-7 hours regardless of the route of administration (15). 

Numerous studies of dietary protein-induced urinary calcium loss have appeared, in which the quantitative effect of protein upon calcium has been investigated. Anand and Linkswiler (12) reported that feeding a high-protein (150 g/d) diet to college students nearly doubled their calcium output compared with their output when on a low-protein (42 g/d) diet. Most of the calcium was lost in the urine with only very small increases in fecal losses. 

Feeding human subjects meat-rich diets has been clearly and repeatedly associated with elevated urinary acid and calcium loss. Anand, et al. (12) fed college men low, medium, and high-protein diets. Fecal calcium changed less than 15%, whereas urinary calcium losses accounted for the major loss of calcium. Calcium loss and meat protein intake correlated directly. Johnson, et al. (34) reported that women showed a similar response when fed such diets. 

Figure 6. The effect of different ration levels of calcium (Ca = 0.3% and Ca2 = 1.2%) and phosphorus (P1 = 0.3% and P2 = 1.2%) on fecal calcium and phosphorus in mice fed soy (S) or egg white (E) diets. Top Main effect, ca. P < 0.0001. Bottom P-protein interaction P < 0.0001.

Zinc. Some recent studies on the effects of soy protein on zinc utilizaton are summarized in Table IV. Young and Janghorbani (4 4) and Istfan et al. (46) compared the effects of soy isolate or soy concentrate and dried skim milk as protein sources in multi-day feeding periods. Zinc absorptions, measured by fecal monitoring of the extrinsic label given, were equivalent and no deleterious effects of soy protein were observed. In a second study, Istfan et al. (47) fed egg protein diets for 10 days and then a soy concentrate diet for 82 days. Zinc absorptions were not decreased by feeding the soy concentrate diet. 

Eight subjects fed (10 days) formula diets with either (a) DSM or (b) soy protein concentrate as protein source extrinsic zinc label (fecal monitoring method)... 

Ten subjects fed (12 days) isonitrogenous diets with all protein from chicken meat or 50% from chicken and 50% from soy isolate intrinsic (chicken) and extrinsic labels used (fecal monitoring method)... 

Cohen, P. S., Rossoll, R., Cabelli, V. J., Yang, S. L., and Laux, D. C. (1983). Relationship between the mouse-colonizing ability of a human fecal Escherichia coli strain and its ability to bind a specific mouse colonic mucous gel protein. Infect. Immun. 40,62-69. 

B CR depressed. C GR depressed. D NEX increased, attributed to endogenous protein loss and not dietary protein loss increased fecal levels of the mucoprotein cenponent glucosamine reported. E Larger animals less likely to die, yet mortality rate did increase. LD(50) 2.26 g/kg- Fatty liver... 

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