ANDERSON, H. L., N. J. BENEVENGA, AND A. E. HARPER. Associations among food and protein intake, serine dehydratase, and plasma amino acids. Am. J. Physiol. 214(5): 1008-1013. 1968.Relationships among liver serine-threonine dehydratase activity, plasma amino acid concentrations, and food and protein intake were studied in growing rats undergoing adaptation to high-protein diets. Serine-threonine...

BACKGROUND: To maximally stimulate muscle protein synthesis (MPS), older adults should consume≥1.2 g/kg body weight (BW) of high-quality protein, evenly distributed across the day ( 0.4 BW per meal). OBJECTIVES: investigate intake, distribution, and sources in community-dwelling adults. METHODS: Data (including a 4-day food record) were obtained from Researching Eating, Activity, Cognitive Heal...

Metabolizable protein (MP) supply and amino acid balance were manipulated through selection of highly digestible rumen-undegradable protein (RUP) sources. Effects on production efficiency and N utilization of early post-partum dairy cows were determined. Forty-two multiparous and 16 primiparous Holstein cows were assigned to the diets in a randomized complete block design immediately after part...

thirty multiparous holstein dairy cows with average body weights of 687±15 kg and body condition scores of 3.25±0.15 were allocated to 1 out of each 3 groups, immediately after parturition (dim=11) and in a completely randomized design. the first group was fed diet low in rumen undegradable protein (rup; 5.1% of dry matter), the second group fed with medium rup (7.2% of dry matter) while the th...

BACKGROUND In individuals with moderate to severe renal insufficiency, low protein intake may slow renal function decline. However, the long-term impact of protein intake on renal function in persons with normal renal function or mild renal insufficiency is unknown. OBJECTIVE To determine whether protein intake influences the rate of renal function change in women over an 11-year period. DE...

Excess dietary proteins and "acid ash" diets have been suspected to increase the risk of osteoporosis, but experimental and epidemiological evidence is mixed. We aimed to determine whether the association between protein intake and the overall acid-base equilibrium of the diet (as renal net acid excretion [RNAE] estimate) and fracture risk vary according to calcium intake. During an average of ...