Digested casein phosphopeptides impact intestinal calcium transport .

Calcium is the most abundant mineral in the human body and is involved in critical physiological and cellular processes. It is essential for the development, maintenance, and integrity of bone tissue throughout life. Identifying new natural food-grade chelating agents to improve calcium uptake is of increasing interest.

Postprandial amino acid response after the ingestion of pea protein, milk protein, casein and a casein-pea blend, in healthy older adults.

To identify the potential anabolic properties of a dairy-plant protein blend as compared to single plant-based and single dairy protein, the postprandial amino acid (AA) response of pea protein, milk protein, micellar casein, and a casein-pea protein blend was investigated in healthy older adults (age 72.3 ± 3.4 years, BMI 25.

Identification of unknown impurities J, RRT 2.2, 2.4, 2.6 and 3.4 in tetralysal® capsules.

Tetralysal® is a Galderma oral drug product (DP) marketed for the treatment of acne. Tetralysal® is sold in capsules containing either 150 mg or 300 mg of the drug substance. In the British Pharmacopoeia monograph for Lymecycline Capsules, the impurities already specified in the drug substance (A-G), visible in the European Pharmacopoeia 〈1654〉, are also specified together with an unidentified impurity at RRT 1.

Differential effects of milk proteins on amino acid digestibility, post-prandial nitrogen utilization and intestinal peptide profiles in rats.

Objective: The aim of this study was to analyze the protein digestibility and postprandial metabolism in rats of milk protein matrices obtained by different industrial processes.

Material And Methods: The study was conducted on Wistar rats that consumed a meal containing different N-labeled milk proteins. Four milk matrices were tested: native micellar caseins (C1), caseins low in calcium (C2 low Ca), a matrix containing a ratio 63:37 of caseins and whey proteins (CW2) and whey proteins alone (W).

comparison of whey protein isolate and hydrolysate for their effect on glucose homeostasis markers.

Research on new strategies to regulate glucose homeostasis to prevent or manage type 2 diabetes is a critical challenge. Several studies have shown that protein-rich diets could improve glucose homeostasis. Whey protein hydrolysis allows the release of amino acids and bioactive peptides, which exert numerous well-documented bioactivities.

Casein structures differently affect postprandial amino acid delivery through their intra-gastric clotting properties.

We aimed to assess if casein structure affects its digestion and its subsequent amino acid delivery kinetic. Higher nitrogen levels were recovered in dialysates after in vitro digestions of sodium caseinate (SC, formed of small aggregates) compared to micellar casein (MC, native form of casein) and calcium caseinate (CC, intermediate structure). Likewise, plasma indispensable amino-acid concentration peak was higher after SC compared to MC or CC ingestion in healthy volunteers in a randomized, double blind, cross-over study.

Identification, production and bioactivity of casein phosphopeptides - A review.

Milk and dairy products are significant sources of proteins and peptides impacting human health. In this way, the interest in CPPs, bioactive phosphorylated peptides resulting from the hydrolysis of caseins, has grown in the past years. CPPs were mainly studied for their capacity to chelate and increase the bioavailability of essential minerals involved in multiple physiological processes.

The Anxiolytic-like Properties of a Tryptic Hydrolysate of Bovine α Casein Containing α-Casozepine Rely on GABA Receptor Benzodiazepine Binding Sites but Not the Vagus Nerve.

(1) Background: A tryptic hydrolysate of bovine α-casein (CH) exerts anxiolytic-like properties in many species, including humans. This is mainly related to the presence of α-casozepine (α-CZP), which yields these properties in rodents. This study evaluates, in a rat model, the roles of the vagus nerve and the benzodiazepine binding site of GABA receptors in the mode of action of CH.

Moderate adiposity levels counteract protein metabolism modifications associated with aging in rats.

Purpose: Physiological parameters such as adiposity and age are likely to influence protein digestion and utilization. The aim of this study was to evaluate the combined effects of age and adiposity on casein protein and amino acid true digestibility and its postprandial utilization in rats.

Methods: Four groups were included (n = 7/8): 2 months/normal adiposity, 2 months/high adiposity, 11 months/normal adiposity and 11 months/high adiposity.

Partial-, Double-Enzymatic Dephosphorylation and EndoGluC Hydrolysis as an Original Approach to Enhancing Identification of Casein Phosphopeptides (CPPs) by Mass Spectrometry.

The identification of phosphopeptides is currently a challenge when they are part of a complex matrix of peptides, such as a milk protein enzymatic hydrolysate. This challenge increases with both the number of phosphorylation sites on the phosphopeptides and their amino acid length. Here, this paper reports a four-phase strategy from an enzymatic casein hydrolysate before a mass spectrometry analysis in order to enhance the identification of phosphopeptides and phosphosites: (i) the control protein hydrolysate, (ii) a two-step enzymatic dephosphorylation of the latter, allowing for the almost total dephosphorylation of peptides, (iii) a one-step enzymatic dephosphorylation, allowing for the partial dephosphorylation of the peptides and (iv) an additional endoGluC enzymatic hydrolysis, allowing for the cleavage of long-size peptides into shorter ones.

In Vitro Assessment of the Impact of Industrial Processes on the Gastrointestinal Digestion of Milk Protein Matrices Using the INFOGEST Protocol.

The goal of this study was to determine the impact of industrial processes on the digestion of six milk protein matrices using the harmonized INFOGEST in vitro static digestion protocol. First, this method was optimized to simple protein matrices using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and size exclusion chromatography (SEC) to compare the intestinal protein hydrolysis obtained with increasing quantities of pancreatin. Similar results were achieved with the originally required pancreatin amount (trypsin activity of 100 U.

Anxiolytic Activity and Brain Modulation Pattern of the α-Casozepine-Derived Pentapeptide YLGYL in Mice.

α-Casozepine (α-CZP) is an anxiolytic-like bioactive decapeptide derived from bovine α‑casein. The N-terminal peptide YLGYL was previously identified after proteolysis of the original peptide in an digestion model. Its putative anxiolytic-like properties were evaluated in a Swiss mice model using a light/dark box (LDB) after an intraperitoneal injection (0.

Correction: Sartorius et al. "Postprandial Effects of a Proprietary Milk Protein Hydrolysate Containing Bioactive Peptides in Prediabetic Subjects" 2019 1700.

Milk proteins have been hypothesized to protect against type 2 diabetes (T2DM) by beneficially modulating glycemic response, predominantly in the postprandial status. This potential is, amongst others, attributed to the high content of whey proteins, which are commonly a product of cheese production. However, native whey has received substantial attention due to its higher leucine content, and its postprandial glycemic effect has not been assessed thus far in prediabetes.

Postprandial Effects of a Proprietary Milk Protein Hydrolysate Containing Bioactive Peptides in Prediabetic Subjects.

Milk proteins have been hypothesized to protect against type 2 diabetes (T2DM) by beneficially modulating glycemic response, predominantly in the postprandial status. This potential is, amongst others, attributed to the high content of whey proteins, which are commonly a product of cheese production. However, native whey has received substantial attention due to its higher leucine content, and its postprandial glycemic effect has not been assessed thus far in prediabetes.

A Double-Blind, Randomized, Placebo-Controlled Crossover Clinical Study of the Effects of Alpha-s1 Casein Hydrolysate on Sleep Disturbance.

This study evaluated the effects of alpha-s1 casein hydrolysate (ACH; Lactium) on the subjective and objective sleep profiles of a community-based sample of Koreans with poor sleep quality. We performed a double-blind, randomized crossover trial with 48 participants (49.0 ± 1.

Bioelectrical impedance in young patients with cystic fibrosis: Validation of a specific equation and clinical relevance.

Background: Body composition (BC) analysis based on bioelectrical impedance analysis (BIA) provides conflicting results. The purpose of the study was to validate an equation specific for young patients with cystic fibrosis (CF), describe their BC and investigate its association with lung function.

Methods: Fifty-four young CF patients were evaluated by BIA and dual X-ray absorptiometry (DXA).

Combination of micellar casein with calcium and vitamins D2 and K2 improves bone status of ovariectomized mice.

Unlabelled: Nutritional approaches may help to preserve bone quality. The purpose of our study was to demonstrate the efficiency of an innovative bone health product (BHP) including micellar casein rich in calcium, vitamin D2 and vitamin K2, to improve bone mineral density.

Introduction: The aim of postmenopausal osteoporosis treatment is to decrease bone resorption and/or increase bone formation.

Body fluid retention and body weight change in anorexia nervosa patients during refeeding.

Background & Aims: Body weight gain is an important goal in anorexia nervosa (AN) patients, but inflation in body fluids could artificially increase body weight during refeeding.

Methods: 42 malnourished adult AN patients were refed using a normal-sodium diet, then 176 other malnourished adult AN patients received a refeeding low-sodium diet (BMI of the 218 patients: 13.4 ± 1.

The cumulative effect of small dietary changes may significantly improve nutritional intakes in free-living children and adults.

Background/objectives: The ELPAS (Etude Longitudinale Prospective Alimentation et Santé) study was an 8-month randomized controlled dietary modification trial designed to test the hypothesis that family dietary coaching would improve nutritional intakes and weight control in 2026 free-living children and parents. It resulted in significant nutritional changes, with beneficial effects on body mass index in adults. In these ancillary analyses, we investigated dietary changes throughout the intervention.

Comparison of field methods to estimate fat mass in children.

Background: Reliable field methods to measure fat mass (FM) in children may contribute to primary prevention of childhood obesity.

Aim: The objective was to compare the accuracy of existing field methods (skinfold thickness (SF), leg-to-leg bioelectrical impedance analysis (BIA), anthropometrics for FM measurement in prepubertal European children.

Subjects And Methods: Reference FM was measured in 55 French children (30 boys, 25 girls; mean age 8.

Family dietary coaching to improve nutritional intakes and body weight control: a randomized controlled trial.

Objective: To test the hypothesis that family dietary coaching would improve nutritional intakes and weight control in free-living (noninstitutionalized) children and parents.

Design: Randomized controlled trial.

Setting: Fifty-four elementary schools in Paris, France.

[A 6-year study of glycopeptides-resistant enterococci in 3 intensive care units of the University Hospital of Montpellier].

Aim Of The Study: The aim of this study was to evaluate the rate of glycopeptides-resistant enterococci (GRE) fecal carriage (species and resistance determinants). Strains isolated between 1999 and 2005 during systematic screening for multiresistant bacteria in patients hospitalized in 3 intensive care units (ICU) of the University Hospital of Montpellier were studied.

Methods: The systematic screening was weekly performed.

Measurement of circulating troponin Ic enhances the prognostic value of C-reactive protein in haemodialysis patients.

Background: Cardiac Troponin I (cTnI) levels are considered an important diagnostic tool in acute coronary events. They could be of predictive value in haemodialysis (HD) patients. However, the relationship between cTnI and the HD-induced inflammatory state remains unclear.

Short- and long-term evolution of body composition in 1389 obese outpatients following a very low calorie diet (Pro'gram18 VLCD).

One thousand three-hundred and eighty-nine obese outpatients were followed by 28 practitioners. They were enrolled in a multidisciplinary weight control program for at least 1 year. The major components of the program include a commercial very low calorie diet (Pro'gram18 VLCD), behavior modification, and exercise.

A paradoxical increase in resting energy expenditure in malnourished patients near death: the king penguin syndrome.

Background: The metabolic expression of extreme starvation on the verge of death is unknown in humans.

Objective: The objective was to compare the resting energy expenditure (REE) of 5 extremely malnourished dying patients [body mass index (in kg/m(2)): 9.77 +/- 0.