Abstract:
:Since trivalent chromium (Cr+3) transport into certain tissues is rapid, the placental transport of injected high specific activity 51Cr+3 was studied in pregnant rats at days 17-20 of gestation. Three days after the intravenous injection of 51Cr+3, body retention of 51Cr was similar in pregnant and nonpregnant rats, but in the pregnant rats placentofetal uptake of 51Cr accounted for 25-30% of the 51Cr retention. The mean 51Cr content per placentofetal unit was 0.89 +/- 0.03% injected dose. Serum and tissue 51Cr contents per milliliter or gram in the pregnant rats were decreased by 50-80% except in uterus, which was unchanged. Tissue/serum 51Cr ratios were increased by 70-300% in the pregnant rats compared to the nonpregnant controls. These results indicate that the placentofetal unit is capable of extracting large amounts of Cr from the mother, and support the suggestion that maternal Cr is depleted during pregnancy. The data also suggest that body tissues may defend their Cr stores against Cr depletion by adaptive cellular Cr transport mechanisms.
journal_name
J Am Coll Nutrjournal_title
Journal of the American College of Nutritionauthors
Wallach S,Verch RLdoi
10.1080/07315724.1984.10720038subject
Has Abstractpub_date
1984-01-01 00:00:00pages
69-74issue
1eissn
0731-5724issn
1541-1087journal_volume
3pub_type
杂志文章abstract:OBJECTIVE:We tested the hypothesis that pectin, a source of dietary fiber that delays gastric emptying, increases satiety. METHODS:Male (n = 49) and female (n = 25) US Army employees within normal weight limits were fasted overnight then fed 448 mL of orange juice on 2 separate days followed 4 hours later by 0.473 L o...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1997.10718708
更新日期:1997-10-01 00:00:00
abstract:OBJECTIVE:Enteropathogenic Escherichia coli (EPEC) strains are able to adhere to human intestinal tissue inducing a typical lesion causing dissolution of the brush border membrane and loss of microvillus structure at sites of bacterial attachment. The presence of these lesions can provoke perpetuation of diarrhea assoc...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1996.10718586
更新日期:1996-04-01 00:00:00
abstract:OBJECTIVE:Rheumatoid arthritis (RA) is an autoimmune inflammatory disease that causes great pain and disability and increasing oxidative stress in patients. The objective of the present study was to evaluate the effects of probiotics-live microorganisms with many health benefits, including antioxidant properties-on oxi...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,随机对照试验
doi:10.1080/07315724.2014.959208
更新日期:2016-05-01 00:00:00
abstract:OBJECTIVE:In vitro and animal studies suggest that antitumor effect of chemotherapeutic agents may be enhanced by antioxidants. Therefore, we initiated a clinical study to test the efficacy of high-dose multiple antioxidants (vitamins C, E and beta carotene) as an adjunct to chemotherapy (paclitaxel and carboplatin) in...
journal_title:Journal of the American College of Nutrition
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/07315724.2005.10719438
更新日期:2005-02-01 00:00:00
abstract:OBJECTIVE:There is limited information on the nutritional health of Canadian children, particularly those living in poverty. Our purpose was to assess the dietary and anthropometric status of economically disadvantaged children as part of the longitudinal, multidisciplinary prevention project, Better Beginnings, Better...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1995.10718548
更新日期:1995-12-01 00:00:00
abstract:OBJECTIVE:Evidence, mostly based on developed countries, indicates that disease risks may be associated with changes in growth processes rather than a one-point phenomenon. In view of the increasing prevalence of hypertension in India, there is a need to understand how patterns of growth during early childhood and adol...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2011.10719963
更新日期:2011-06-01 00:00:00
abstract::Cardiovascular diseases (CVDs) are the leading cause of mortality in the Western world. Multiple factors are involved in CVD, including genetic factors and modifiable factors such as diet, physical activity, and smoking. CVD incidence and prevalence increase progressively with age, and it is estimated that over 80% of...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.2015.1080107
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:To examine the efficacy of l-alanyl-l-glutamine ingestion with a commercially available sports drink compared to the sports drink only on time to exhaustion and physiological measures during prolonged endurance exercise. METHODS:Twelve endurance-trained men (23.5 ± 3.7 years; 175.5 ± 5.4 cm; 70.7 ± 7.6 kg) p...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2015.1009193
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:The increased prevalence of obesity has resulted in the current high popularity of dietary supplements marketed as weight reducing agents. The efficacy of most of these supplements is not established. The soluble fiber, glucomannan, is often recommended for weight loss. The aim of this systematic review is to...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,meta分析,评审
doi:10.1080/07315724.2014.870013
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVE:To compare oxidative stress and LDL oxidizability in postmenopausal women with and without HRT. METHODS:In a cross sectional study, two groups of women, with or without combined per os HRT (1.5-2 mg estrogen associated with 10 mg dydrogesteron), were age and duration of menopause matched. Women were recruite...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2002.10719231
更新日期:2002-08-01 00:00:00
abstract::The purported health benefits of low-carbohydrate diets have been advocated intermittently over the last century and have enjoyed increasing popularity over the last decade. Although most revolve around the emphatic theme that carbohydrates are to blame for many chronic diseases, their specific ideologies are more var...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.2003.10719271
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVE:Replacing dietary refined carbohydrates (CHO) with protein may impact appetite and glucose and lipid metabolism in metabolically at-risk individuals. The objectives of this study were to assess the effects of consumption of a lean pork-containing, high-protein (pPro) breakfast versus a refined-CHO-rich breakf...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2017.1396266
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Vitamin D deficiency was associated with total mortality in previous epidemiological studies. Little is known about the effects of dietary vitamin D intake on mortality. We examined the association between mid-life dietary vitamin D intake and 45-year total mortality. METHODS:The Honolulu Heart Program is a...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2013.875363
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:In adults, adaptation to changes in magnesium intake is largely due to changes in fractional magnesium absorption and urinary magnesium excretion. We sought to examine whether these homeostatic mechanism also occurred in young children. METHODS:Children, 12-48 m old were studied (n=30). They were adapted to...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2008.10719711
更新日期:2008-04-01 00:00:00
abstract:BACKGROUND:The objective of this study was to identify an association among dietary components, iron, and inflammatory status among adolescent girls. METHOD:Dietary information for 85 adolescent girls was collected through food frequency questionnaires. Biomarkers of iron and inflammatory status were analyzed. RESULT...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2018.1492470
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVE:Herbal extract compositions are largely used to manage vein diseases. We prepared a new composition of herbs, named FLEBO OK™, that, when administered as a nutraceutical to patients affected by peripheral vascular diseases, was able to improve their health conditions. We analyzed the effects of this nutraceut...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2016.1269622
更新日期:2017-05-01 00:00:00
abstract:BACKGROUND:High sucrose intakes are hypothesized to increase colorectal cancer (CRC) risk by several mechanisms, and sucrose intakes have been consistently positively associated with CRC risk in case-control studies. However, all but one prospective study reported a null sucrose-CRC association. The only prospective st...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2020.1848661
更新日期:2020-12-14 00:00:00
abstract::To examine the relationship between zinc (Zn) status and bone demineralization, a body Zn kinetics study was performed with 74 (37 male, 37 female) disabled persons ranging in age from 16 to 45 years. Three groups were classified according to degree of limited mobility: group 1 (n = 23), capable of walking; group 2 (n...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1993.10718284
更新日期:1993-02-01 00:00:00
abstract::Zinc is an essential trace element required for RNA and DNA synthesis and the function of over 200 zinc metalloenzymes. After surgery or trauma, the serum zinc concentration usually decreases. The magnitude and duration of this hypozincemia after thermal injury are unclear, as are mechanisms for this hypozincemia. In ...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.1988.10720222
更新日期:1988-02-01 00:00:00
abstract::Following massive small bowel resection, the remaining small bowel increases in mucosal weight, protein, deoxyribonucleic acid (DNA) content and absorptive function. Enteral nutrients are known to be important in stimulating this response. Recently, glutamine has been described as an essential fuel for the small intes...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::The old adage, "You are what you eat," is not always reliable, as demonstrated in this mixed-longitudinal study of men that began in 1969. Mean values of percent body fat, total body potassium (TBK), and total serum cholesterol (SCHOL) did not show changes that correlated with any studied nutrient from repeated 4-day ...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1992.10718265
更新日期:1992-12-01 00:00:00
abstract:OBJECTIVE:To test the impact of supplementation with nutritional doses of antioxidant nutrients on biochemical indicators of vitamin and trace element levels. DESIGN:A randomized double-blind trial was performed comparing two groups receiving daily either a combination of vitamins (beta-carotene, 6 mg; vitamin C, 120 ...
journal_title:Journal of the American College of Nutrition
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/07315724.1998.10718754
更新日期:1998-06-01 00:00:00
abstract:STUDY AIM:To determine the content of the main groups of fatty acids in pastries, confectionery, and potato products, paying special attention to trans fatty acids and the products of fat oxidation and hydrolysis, as factors affecting the safety of consumption. METHODS:A total of 157 products were collected in Poland ...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2014.942472
更新日期:2015-01-01 00:00:00
abstract::T-lymphocyte subpopulations were measured in the two major types of adult malnutrition, adult marasmus and kwashiorkor-like hypoalbuminemic malnutrition. The population of T-cells (T3) and the percentage of both helper (T4) and suppressor (T8) T-cells were significantly (P less than .05) decreased in patients with kwa...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1986.10720158
更新日期:1986-01-01 00:00:00
abstract:BACKGROUND/OBJECTIVES:Added sugars provide calories and desirability to foods and beverages. Our aim was to test whether desire for a sweet taste would be better maintained than a desire for other tastes for 3 hours after a test meal. METHODS:Eighty-three young adults ate 2 slices of bread on 2 separate occasions afte...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2015.1117956
更新日期:2016-08-01 00:00:00
abstract::This study compared bioelectrical impedance analysis (BIA) measurements with current bedside techniques for determination of body composition in 18 normal volunteers to evaluate the relative usefulness of these methods as adjuncts to assessment in surgical nutrition. Anthropometrics (weight, height, and two skinfold t...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1989.10720317
更新日期:1989-12-01 00:00:00
abstract:OBJECTIVE:To determine if a relationship exists between blood glucose control and variability in nutrient intake from day-to-day in subjects with type 1 diabetes. METHODS:Two three-day diet records and one measurement of glycated hemoglobin (HbA1c) were obtained from 272 subjects with type 1 diabetes treated with a mi...
journal_title:Journal of the American College of Nutrition
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1080/07315724.1999.10718858
更新日期:1999-06-01 00:00:00
abstract:BACKGROUND:Iron and zinc deficiency remain substantial problems in small children in both developed and developing nations. Optimizing mineral absorption is an important strategy in minimizing this problem. OBJECTIVES:To assess the effects of beef and soy proteins on the bioavailability of non-heme iron and zinc in ch...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2006.10719512
更新日期:2006-02-01 00:00:00
abstract:OBJECTIVE:NutriBee was the first clinical nutrition intervention designed to bring the Institute of Medicine recommendations for 20 hours of experiential nutrition-themed learning to grades 4-7 into club and camp settings. We piloted NutriBee to assess acceptability and impact among early adolescents in diverse and dis...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2015.1110507
更新日期:2016-07-01 00:00:00
abstract:OBJECTIVE:Vegetarians may be at risk of certain nutrient deficiencies, particularly vitamin B-12. Vitamin B-12 deficiency may increase plasma homocysteine concentration and thus may potentially increase the risk of cardiovascular disease in vegetarians. The purpose of this study was to assess and compare plasma homocys...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2010.10719811
更新日期:2010-02-01 00:00:00