Abstract:
OBJECTIVE:Approximately 70% of all cancer patients have elevations in hepatic glucose production and/or reductions in glucose utilization. To identify an explanation for insulin resistance, we measured fasting hepatic glucose production (HGP), leucine appearance (Leu Ra), leucine oxidation (LO), glucose oxidation (GO) and non-oxidative glucose utilization at baseline and after identical insulin infusion rates (2 pmol/kg/minute, 7 pmol/kg/minute, and 70 pmol/kg/minute) in eight head and neck cancer patients and eight weight-matched disease-free volunteers. METHODS:A step increase in insulin administration during a euglycemic clamp protocol was used to measure insulin effects on glucose and leucine metabolism. HGP and Leu Ra were determined by performing a primed, continuous 10-hour intravenous infusion of 6-3H glucose and 1-14C leucine. Baseline insulin, thyroid, TNF, and counter-regulatory hormonal measurements, HGP, GO and Leu Ra were obtained between hours 3 and 4. An insulin infusion was started at hour 4 and increased every 2 hours for 6 hours. Glucose appearance, Leu Ra, GO, LO and insulin concentrations were determined at the end of each 2-hour interval. RESULTS:Fasting HGP, GO, fat oxidation and Leu Ra were similar between the two groups. Insulin administration in cancer patients and normal volunteers had a similar effect on LO and Leu Ra. The insulin concentration required to stimulate half maximal glucose utilization in cancer patients was significantly increased by 58% (470 +/- 82 pM vs. 741 +/- 124 pM; p < or = 0.05). Non-oxidative glucose utilization was reduced in the cancer patients at both lower doses of insulin infusion (6.4 +/- 2.1 mumol/kg/minute vs. 0.1 +/- 1.6 mumol/kg/minute p < or = 0.05; and 23.7 +/- 1.3 mumol/kg/minute vs. 15.1 +/- 2.0 mumol/kg/minute p < 0.01). Triiodothyronine (T3) was directly correlated in the cancer patients with non-oxidative glucose utilization at the two physiological insulin concentrations (r = 0.673, p < 0.05 and r = 0.731, p < 0.01) and the supraphysiological insulin concentration (r = 0.791, p < 0.01). The insulin sensitivity index from the euglycemic clamp study was significantly reduced in the cancer patients (4.7 +/- 0.7 vs. 2.4 +/- 0.1 (dl/min)/(microU/ml); p < 0.05). CONCLUSIONS:In summary, head and neck cancer patients have an abnormal reduction in non-oxidative glucose utilization which occurs before abnormalities in HGP, GO, or Leu Ra [corrected]. One explanation for the reduced glucose utilization may be the influence of a reduced T3 concentration on non-oxidative glucose metabolism but further work is needed to confirm these preliminary observations.
journal_name
J Am Coll Nutrjournal_title
Journal of the American College of Nutritionauthors
Tayek JAdoi
10.1080/07315724.1995.10718519subject
Has Abstractpub_date
1995-08-01 00:00:00pages
341-8issue
4eissn
0731-5724issn
1541-1087journal_volume
14pub_type
杂志文章abstract::The risk of fragility fractures exponentially increases with aging. Reduced mass and strength of both bone in osteoporosis and skeletal muscle in sarcopenia play a key role in the age-related incidence of fragility fractures. Undernutrition is often observed in the elderly, particularly in those subjects experiencing ...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.2013.816604
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVES:Fatty acid profiles and desaturase (SCD-16, SCD018, D5D, D6D) and elongase (ELOVL6) enzyme activity have been associated with adiposity and metabolic disease. While this has been studied in adults, few studies have included children. The objective of this study was to evaluate these markers in children and i...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2017.1347908
更新日期:2018-01-01 00:00:00
abstract::The acquisition and maintenance of bone mass and strength are influenced by environmental factors, including physical activity and nutrition. Among micronutrients, calcium (Ca) and inorganic (i) phosphate (P) are the two main constituents of hydroxyapatite, the bone mineral that strengthens the mechanical resistance o...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.2011.10719988
更新日期:2011-10-01 00:00:00
abstract::To determine if the lower plasma ascorbic acid concentrations observed in males compared to females, and in the elderly in general, might be due to differences in renal clearances of ascorbic acid, tubular maximum reabsorptions (TmAA) and renal thresholds for ascorbic acid were determined on older (10 male, 10 female,...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1993.10718349
更新日期:1993-10-01 00:00:00
abstract::To assess whether antioxidants may reduce the risk of cancer, we reviewed the epidemiologic literature from 1985 through 1993. We assessed the separate relationships of three antioxidants (carotenoids, vitamin C, and vitamin E) with six sites of cancer (lung, upper aerodigestive tract, uterine cervix, colon, breast, p...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.1995.10718532
更新日期:1995-10-01 00:00:00
abstract::We prepared ten dogs with intraperitoneal catheters to allow total nutritional support for 30 days by constant infusion of a solution containing 1.5% amino acid, 10% glucose, and 1% lipids at a rate of 4 ml/kg/hr. Seven dogs survived in apparent good health but with a 13.9 +/- 1.3% weight loss. There was no correlatio...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1985.10720088
更新日期:1985-01-01 00:00:00
abstract::Respiratory function in mechanically ventilated patients (VP) is adversely affected by starvation and hypermetabolic stress. These patients are more successfully managed and extubated if proper nutritional support is provided. The features of metabolism and respiratory function in VP require moderation in glucose, fat...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1983.10719906
更新日期:1983-01-01 00:00:00
abstract::Objective: To assess whether the nutritional risk classified by StrongKids is associated with anemia and inflammation (total leukocytes and C-reactive protein (CRP)), as well as to compare the ability of StrongKids with anthropometry in identifying these changes in hospitalized pediatric patients.Methods: Cross-sectio...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2020.1750072
更新日期:2020-04-13 00:00:00
abstract::Abnormalities of the vascular endothelium contribute to all stages of atherosclerosis from lesion development to clinical cardiovascular disease events. Recognized risk factors, including diabetes mellitus, hypertension, dyslipidemia, cigarette smoking, and sedentary lifestyle are associated with endothelial dysfuncti...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.2007.10719625
更新日期:2007-08-01 00:00:00
abstract:OBJECTIVE:To identify if particular foods or food groups may be associated with obesity in children and adolescents and to determine if consuming food away from home (FAFH) has an effect on the nutritional quality of their diets. DESIGN:One-year cross-sectional study. SETTING/SUBJECTS:The obese subjects (n = 91) were...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2003.10719333
更新日期:2003-12-01 00:00:00
abstract::Vitamin E consists of a group of eight isomers, four tocopherols (alpha-, beta-, gamma-, delta-tocopherol) and four tocotrienols (alpha-, beta-, gamma-, delta-tocotrienol). While extensive literature has been published on the potential health benefits of alpha-tocopherol, little is known about gamma-tocopherol, the ma...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.2006.10719538
更新日期:2006-08-01 00:00:00
abstract::Objective: To evaluate whether the Fat-to-Lean Mass (FyM) ratio is associated to hyperinsulinemia in healthy adolescents.Methods: Apparently healthy adolescents aged 10 to 15 years that according to sex, age, and percentiles of body fat percent, were included and allocated into the groups with elevated (body fat perce...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2020.1752845
更新日期:2020-10-12 00:00:00
abstract:OBJECTIVE:Matrix metalloproteinase (MMP)-9, also known as gelatinase B, is implicated in the development of hypertension and atherosclerotic plaque vulnerability to rupture, an important step in the etiology of cardiovascular diseases. Studies have suggested that flavonoid consumption may be cardioprotective, and its f...
journal_title:Journal of the American College of Nutrition
pub_type: 临床试验,杂志文章
doi:10.1080/07315724.2009.10719803
更新日期:2009-12-01 00:00:00
abstract::Magnesium is unique among biological cations. Its volume change from hydrated cation to atomic ion is over an order of magnitude larger than that of any other biological cation. This volume change presents particular problems for a magnesium transport system and suggests that these systems may be significantly differe...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.1994.10718431
更新日期:1994-10-01 00:00:00
abstract:OBJECTIVE:While most studies have shown an inverse relation between tea consumption and cardiovascular risk, other studies have shown opposite results. Aortic stiffness and wave reflections are markers of cardiovascular disease and prognosticators of cardiovascular risk. METHODS:The acute effect of black and green tea...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,随机对照试验
doi:10.1080/07315724.2006.10719535
更新日期:2006-06-01 00:00:00
abstract::Objective: Vitamin D (vitD) mediates numerous health conditions other than bone health and mineralization. Its role in cardiometabolic condition is still inconclusive. Methods: We conducted a cross-sectional study in 87 apparently healthy Serbian adults. We assessed their dietary intake, anthropometric and biochemical...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2018.1538828
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVES:Relating food diversity, quality, and intake is one of the key aspects in understanding household food security. This paper aimed at marying food intake and quality, both being measurement for food security. METHODS:A household food consumption survey (n=200) exploring food diversity, quality of foods, and ...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2013.797859
更新日期:2013-01-01 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
abstract::Since there is evidence that fat distribution is a better predictor of cardiovascular disease than the degree of obesity, some risk factors for atherosclerosis have been evaluated in middle age Type II male diabetics and in obese subjects with and without glucose intolerance. In non-insulin-dependent diabetics (NIDD),...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.1989.10720320
更新日期:1989-12-01 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::The tenth anniversary for the determination of magnesium in MBC shows progress, but fundamental questions are still unanswered. Uniformity of the methodology for the assay and the units for reporting the result is a key factor for the validity and comparability of results. There is relatively good agreement among inve...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1987.10720166
更新日期:1987-04-01 00:00:00
abstract:OBJECTIVE:The objective of this study is to examine various factors associated with total calcium intake and percent adequate intake (% AI) of calcium by children and adolescents, with respect to age, gender, race/ethnicity, and diet and beverage choices. DESIGN:Data from the U.S. Department of Agriculture's Continuin...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2004.10719339
更新日期:2004-02-01 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:OBJECTIVE:The kinetics of magnesium (Mg) absorption, after drinking Magnesia mineral water (204 mg Mg/L), was investigated in healthy humans aged (23-60 yrs). METHODS:Serum Mg, calcium (Ca), potassium (K) and sodium (Na) content, blood hemoglobin, erythrocyte and white blood cell counts as well as urinary volume and u...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2004.10719424
更新日期:2004-12-01 00:00:00
abstract::The relations of serum zinc (Zn) and copper (Cu) to serum total cholesterol (TC), low-density-lipoprotein and high-density-lipoprotein cholesterol (LDL-C and HDL-C) and triglycerides were investigated in a population-based sample of 399 men in Southern China. Serum Cu was inversely related to HDL-C (r = -0.21), while ...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1992.10718199
更新日期:1992-02-01 00:00:00
abstract::This paper describes relationships between reported alcohol consumption and selected sociodemographic and health variables. Two hundred and four men and 367 women aged 60-95 years were examined as part of a nutritional status survey of elderly. Fifty-three percent of men and 44% of women reported drinking at least 2 g...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1990.10720388
更新日期:1990-08-01 00:00:00
abstract:OBJECTIVE AND METHODS:We reviewed records of 41 children with treated phenylketonuria (PKU) in order to evaluate hematopoiesis and the effect of iron and protein sufficiency. RESULTS:Six children (15%) were found to have anemia. Combined depletion of iron and protein stores was most likely to result in anemia, and two...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2001.10719016
更新日期:2001-02-01 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: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::Failure to thrive (FTT) has been defined in a number of ways, but most definitions include a weight less than the 5th percentile on the growth chart or a decreasing rate of weight gain. Nonorganic failure to thrive (NOFTT), i.e., FTT not due to organic disease, is the most common category of FTT in the United States a...
journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.1988.10720251
更新日期:1988-10-01 00:00:00