scholarly journals The effects of a tryptophan- and protein-deficient diet upon growth in rats

1989 ◽  
Vol 27 (4) ◽  
pp. 345-347 ◽  
Author(s):  
Angela H. Becker ◽  
Stephen F. Davis ◽  
Cathy A. Grover ◽  
Cynthia A. Erickson
Keyword(s):  
Deficient Diet ◽  
Protein Deficient Diet

scholarly journals Veterinary needs of dogs in two resource-limited communities in the Gauteng and North West provinces of South Africa

2001 ◽  
Vol 72 (4) ◽  
Author(s):  
W.N. Minnaar ◽  
R.C. Krecek
Keyword(s):  
South Africa ◽  
Health Status ◽  
Body Condition ◽  
Veterinary Services ◽  
Structured Interviews ◽  
Deficient Diet ◽  
North West ◽  
The North ◽  
Resource Limited ◽  
Protein Deficient Diet

Information on the socioeconomic aspects and the health status of dogs in 2 resource-limited communities in the North West and Gauteng provinces of South Africa was gathered using semi-structured interviews and a standardised questionnaire. The dogs were examined clinically to determine their health status, and their body condition and age were scored. Most of the dogs (93 % in Jericho and 90 % in Zuurbekom) were infected with hookworm, which poses a threat to animal and human health in the 2 study areas. Many dogs were also being given a protein-deficient diet, which together with hookworm parasites would impact considerably on the dog's health. Dogs were mainly kept for security reasons. The need indicated to be most important by the residents of the 2 commnities was a lack of available and affordable veterinary services.

scholarly journals Iberian pig adaptation to acorn consumption: I. Net portal appearance of metabolites

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5861 ◽  
Author(s):  
Ignacio Fernández-Fígares ◽  
Jose Miguel Rodríguez-López ◽  
Lucrecia González-Valero ◽  
Manuel Lachica
Keyword(s):  
Sampling Period ◽  
Metabolic Energy ◽  
Blood Collection ◽  
Standard Diet ◽  
Deficient Diet ◽  
Protein Energy ◽  
Sampling Session ◽  
Protein Deficient Diet ◽  
Portal Plasma ◽  
Set Up

Most valuable cured products from Iberian pigs come from pure bred animals raised for a final grazing-fattening period where pigs eat mainly acorns, a low protein energy rich fruit. This is a nutritional challenge for animals fed equilibrated diets from weaning. The aim of the study was to determine net portal appearance (NPA) of metabolites in gilts fed acorns and evaluate adaptational changes after one week of feeding. Two sampling periods were carried out (after one day and after one week of acorn feeding) with six gilts (34 kg average BW) set up with three catheters: in carotid artery and portal vein for blood sampling, and ileal vein for para-aminohippuric acid (PAH) infusion to measure portal plasma flow (PPF). Pigs were fed at 2.5 × ME for maintenance a standard diet in two portions, at 09:00 (0.25) and 15:00 h (the remaining 0.75). On the day prior to the first sampling period, pigs were fed 2.4 kg of oak acorns. After feeding 0.25 of ration a 6 h serial blood collection was initiated. Following an identical protocol, a second sampling session was performed 1 week later. Adaptation to acorn consumption decreased NPA of ammonia (47%,P < 0.001). Although there was a transfer of urea from the gastrointestinal tract to the circulation in both sampling periods, no differences in NPA of urea was found (P > 0.05). NPA of glucose was not influenced by sampling period (P > 0.05), but NPA of lactate was greatly increased (231%,P < 0.001). There was a negative NPA of albumin although adaptation to acorn feeding did not alter it. Although NPA of triglycerides and cholesterol were unchanged, a subtle increase in arterial and portal cholesterol was noticed (9.6%,P < 0.01). Pigs fed a protein deficient diet for one week adapted decreasing NPA of ammonia for saving metabolic energy as less ammonia would become available for conversion to urea.

LIPID METABOLISM AND LIPOPROTEIN SUSCEPTIBILITY TO PEROXIDATION ARE AFFECTED BY A PROTEIN-DEFICIENT DIET IN THE RAT

1997 ◽  
Vol 17 (1) ◽  
pp. 125-135 ◽  
Author(s):  
Corinne Moundras ◽  
Christian Demigné ◽  
Christine Morand ◽  
Marie-Anne Levrat ◽  
Christian Rémésy
Keyword(s):  
Lipid Metabolism ◽  
Deficient Diet ◽  
Protein Deficient Diet

scholarly journals INFLUENCE OF DIETARY PROTEIN CONTENT ON Trypanosoma cruzi INFECTION IN GERMFREE AND CONVENTIONAL MICE

1998 ◽  
Vol 40 (6) ◽  
pp. 355-362 ◽  
Author(s):  
Isa P. CINTRA ◽  
Marcelo E. SILVA ◽  
Marcílio E.C. SILVA ◽  
Márcio E. SILVA ◽  
L.C. C. AFONSO ◽  
...  
Keyword(s):  
Weight Gain ◽  
Trypanosoma Cruzi ◽  
Dietary Protein ◽  
Blood Cell Count ◽  
Deficient Diet ◽  
Low Protein ◽  
Protein Deficient Diet ◽  
Red Blood Cell Count ◽  
Cruzi Infection ◽  
Microbiological Status

Germfree (GF) and conventional (CV) mice were fed on diets containing 4.4, 13.2 or 26.4% of protein (weight/weight). CV mice fed on low protein diet did not gain weight during four weeks, whereas the protein deficient diet did not affect the growth of GF mice. After four weeks on these diets, the mice were inoculated with 5x103 trypomastigotes of Trypanosoma cruzi. The protein deficiency affected less the GF than the CV mice, according to the following parameters: weight gain, hemoglobin, plasma protein and albumin levels and water and protein contents of the carcass. Infection with T. cruzi produced a significant decrease in hemoglobin levels, red blood cell count, and water and protein contents in the carcass. This decrease was more pronounced in the GF mice. Histopathologically, there was no difference between the treatments in animals with the same microbiological status (GF or CV). However, the disease was more severe in the GF than in the CV mice.

scholarly journals The effect of protein-deficient isoenergetic diets on the growth of rat jejunal mucosa

1982 ◽  
Vol 48 (1) ◽  
pp. 25-36 ◽  
Author(s):  
Gabrielle Syme
Keyword(s):  
Surface Area ◽  
G Protein ◽  
Protein Deficiency ◽  
Male Rats ◽  
Jejunal Mucosa ◽  
Metaphase Arrest ◽  
Villus Height ◽  
Deficient Diet ◽  
Protein Deficient Diet ◽  
Delayed Maturation

1. Newly weaned 21-d-old male rats were given isoenergetic diets containing 200, 100 and 50 g protein/kg for 7, 14, 28 or 70 d. The mid-jejunum was removed from the rats and a micrometric analysis of the mucosa was made. The following measurements were made: number of villi/mm2, vilius dimensions, villus surface area, crypt depth, crypt: villus, the number of cells/crypt in metaphase arrest per h.2. Comparisons were made between animals of the same age but on different diets, and animals on the same diet but of different ages. The latter comparison gave information on the effect of protein deficiency on the pattern of maturation of each feature of The villus or crypt studied.3. The effect of protein deficiency was not consistent at each stage of maturation. For instance villus height was decreased when compared with the controls following 28 d on a protein-deficient diet but not after 7 or 70 d.4. The only measurement to be unaffected by protein deficiency was the number of villi per unit area.5. In general the 50 g protein/kg diet had a more pronounced effect than the 100 g protein/kg diet. Protein deficiency delayed maturation by either slowing or inhibiting changes seen in normal maturation.6. In rats given 50 g protein/kg diet, although the villus surface area did not increase as the rats matured there were increases in epithelial cell production rate and number of crypts per villus.

Atrophy and neuron loss: Effects of a protein-deficient diet on sympathetic neurons

2009 ◽  
Vol 87 (16) ◽  
pp. 3568-3575 ◽  
Author(s):  
Silvio Pires Gomes ◽  
Jens Randel Nyengaard ◽  
Rúbia Misawa ◽  
Priscila Azevedo Girotti ◽  
Patrìcia Castelucci ◽  
...  
Keyword(s):  
Sympathetic Neurons ◽  
Deficient Diet ◽  
Neuron Loss ◽  
Protein Deficient Diet

Effect of a protein deficient diet upon some enzymatic activities of the brain, lung, and kidney of rats

1952 ◽  
Vol 8 (8) ◽  
pp. 306-307 ◽  
Author(s):  
Nora Bargoni ◽  
M. Cafiero ◽  
S. di Bella ◽  
E. de Mori ◽  
M. A. Grillo
Keyword(s):  
Enzymatic Activities ◽  
Deficient Diet ◽  
Protein Deficient Diet ◽  
The Brain ◽  
Lung And Kidney

Emergence of a Kwashiorkor-Like Syndrome Associated with Protein-Calorie Malnutrition in the Developing Rhesus Monkey (Macaca Mulatta)

1977 ◽  
Vol 40 (3_suppl) ◽  
pp. 1339-1344
Author(s):  
Charles R. Geist ◽  
Olin W. Smith ◽  
Robert R. Zimmermann ◽  
Enid M. Geist
Keyword(s):  
Rhesus Monkey ◽  
Terminal State ◽  
Deficient Diet ◽  
Dietary Shift ◽  
Protein Calorie Malnutrition ◽  
Low Protein ◽  
The Face ◽  
Protein Deficient Diet ◽  
Dietary Regime ◽  
Sparse Hair

An infant rhesus monkey was separated from its mother at 90 days of age, housed individually, and at 120 days of age placed on a purified low protein diet containing 3.5% casein by weight. To enhance the effects of protein-calorie malnutrition, a protein-deficient diet containing 2.0% casein by weight was introduced at 415 days of age. When compared with other animals on an identical dietary regime, the subject manifested a reduced intake of food and a marked decrease in weight gain. Clinical symptomatology analogous to human kwashiorkor progressively developed into an acute phase as a result of protein deficiency and included: brittle, depigmented, and sparse hair; chronic diarrhea; dermatitis as “flaky-paint rash” on the extremities and “moist groin rash;” edema of the face and extremities; hypoalbuminemia; hypoproteinemia; retardation of growth and physical development; and wasting of muscle tissue. Within 172 days following the dietary shift from 3.5% to 2.0% casein, a terminal state was evidenced.

scholarly journals IP3/Ca2+ signals regulate larval to pupal transition under nutrient stress through the H3K36 methyltransferase dSET2

2020 ◽  
Author(s):  
Rishav Mitra ◽  
Shlesha Richhariya ◽  
Siddharth Jayakumar ◽  
Dimple Notani ◽  
Gaiti Hasan
Keyword(s):  
Dietary Protein ◽  
Feedback Loop ◽  
Deficient Diet ◽  
Release Channel ◽  
Regulate Gene Expression ◽  
Critical Weight ◽  
Histone 3 ◽  
Intracellular Ca ◽  
Protein Deficient Diet ◽  
Neuronal Genes

AbstractPersistent loss of dietary protein usually signals a shutdown of key metabolic pathways. In Drosophila larvae, that have crossed “critical weight” and can pupariate to form viable adults, such a metabolic shut-down would needlessly lead to death. IP3/Ca2+ signals in certain interneurons (vGlutVGN6341) allow Drosophila larvae to pupariate on a protein-deficient diet by partially circumventing this shutdown through upregulation of neuropeptide signaling and the expression of ecdysone synthesis genes. Here we show that IP3/Ca2+ signals in vGlutVGN6341 neurons drive expression of dSET2, a Drosophila Histone 3 Lysine 36 methyltransferase. Further, dSET2 expression is required for larvae to pupariate in the absence of dietary protein. IP3/Ca2+ signal-driven dSET2 expression upregulates key Ca2+ signaling genes through a novel positive feedback loop. Transcriptomic studies coupled with analysis of existing ChIP-seq datasets identified genes from larval and pupal stages, that normally exhibit robust H3K36 trimethyl marks on their gene bodies and concomitantly undergo stronger downregulation by knockdown of either an intracellular Ca2+ release channel the IP3R or dSET2. IP3/Ca2+ signals thus regulate gene expression through dSET2 mediated H3K36 marks on select neuronal genes for the larval to pupal transition.

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