PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 6731490

Nutrition and mental development.

L S Crnic
View original source ↗Export metadata ↓

Abstract

It has been difficult to assess the effects of malnutrition upon mental development because of the environmental alterations that invariably accompany malnutrition, even in animal models. In rats, maternal behavior is altered whenever offspring are malnourished, in part in response to the altered stimulus characteristics of the offspring. It is difficult to assess whether these alterations in environment are detrimental because they are adaptive in promoting the growth of the pups. Environmental stimulation may to some extent reverse the brain effects of malnutrition and can remediate some of the behavioral effects.

Explore related subjects

Animal Nutritional Physiological PhenomenaAnimalsAnimals, NewbornAnimals, SucklingBehavior, AnimalBrainChildEnvironmentFemaleHumansIntellectual DisabilityMaternal BehaviorModels, BiologicalNutrition DisordersRatsJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

L S Crnic. 1984. Nutrition and mental development.. https://pubmed.ncbi.nlm.nih.gov/6731490/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

Nicotine moderates the effects of macronutrient balance on nutrient intake by parasitized Manduca sexta L.

Effects of dietary nicotine and macronutrient ratio on M. sexta larvae were examined. Larvae were fed a carbohydrate-biased, protein-biased or diet having equal amounts of casein and sucrose, with and without nicotine. Without nicotine, larvae displayed compensatory feeding on the low protein diet, but despite consuming more, grew least on this diet. Nicotine at 0.5% had no effect on nutrient consumption. Nicotine at 1.0 and 2.0% reduced overall consumption and thereby also reduced nicotine consumption. Larvae parasitized by C. congregata displayed reduced nutrient intake and growth on all diets. Parasitized larvae responded to 1% nicotine similarly to unparasitized larvae. At 0.5% nicotine, they displayed reduced consumption on all diets, possibly due to altered chemoreceptor sensitivity to nicotine. When offered a choice of two diets having different macronutrient ratios, one with and the other without 0.1% nicotine, all larvae preferred the diet lacking nicotine and failed to regulate nutrient intake such that the nutrient intake target, a ratio of nutrients supporting optimal growth, was achieved. Parasitized larvae consumed less nicotine on a fresh weight basis than unparasitized insects, suggesting that the feeding response of parasitized larvae to nicotine minimizes the exposure of nicotine to developing parasites.

Animal Nutritional Physiological Phenomena↗
PubMed2007

Homeopathic treatment for infertility in a prize Nelore bull.

Treatments for infertility in bulls are not described in homeopathic literature. A few treatments, such as changing the protein content of the diet, giving extra minerals, etc have been proposed. This case report describes homeopathic treatment for infertility in a prize bull. A Nelore bull, considered infertile for 3 years, was treated with homeopathic Pulsatilla nigricans 200 CH. Decreased total sperm defects, increased sperm motility and a very impressive increased number of doses of semen produced were observed. The bull relapsed after treatment was withdrawn, but again responded when it was resumed. Since only one animal was observed one cannot assume that the observed changes were due only to this treatment. Further studies may establish the real benefits of a homeopathic medicine in bull infertility.

Animal Nutritional Physiological Phenomena↗