Evaluating the impact of amino acid spray on melon (Cucumis melo L.) growth under hydroponic conditions at Polije SGH

Cucumis melo L. is an annual plant and has high economic value so it is widely cultivated in Indonesia. Possible efforts include providing amino acids and hydroponic methods. Determining the provision of amino acids with the best concentration for the growth and quality of hydroponic plant production is the aim of this research. The research method was a completely randomized design (CRD) consisting of factors with four levels of amino acid concentration, namely G0 (without administration of amino acids), G1 (2 mgL-1), G2 (4 mgL-1) and G3 (6 mgL-1) Meanwhile the data was analyzed using the F test. The results for all parameters, both growth and production of melon plants, were not significantly different. Although the concentration of amino acids given to melon plants did not show any influence on the quality of hydroponic melon production, there was a good increase in diameter of 13.60 cm and fruit weight of 1.46 kg. Based on the administration of amino acids, it can be concluded that although it did not have a significant effect, the fruit diameter in the 6 mgL-1 treatment was the largest.

Early Amino Acid Administration for Premature Neonates

Early Changes in Plasma Amino Acid Concentrations during Aggressive Nutritional Therapy in Extremely Low Birth Weight Infants

Ruminal Escape and Apparent Degradation of Amino Acids Administered Intraruminally in Mixtures to Cows

1. Free amino acids were determined in the plasma and in the muscle tissue of 14 patients with chronic uraemia; eight were not on dialysis and six were having regular peritoneal dialysis. The concentration of each amino acid in muscle water was calculated with the chloride method. 2. In both groups of patients there were low intracellular concentrations of threonine, valine, tyrosine and carnosine, and high glycine/valine and phenylalanine/tyrosine ratios. Both groups of patients had increased amounts of 1- and 3-methyl-histidine in plasma and in muscle water. 3. The non-dialysed patients had low intracellular concentrations of lysine, and the dialysed patients had high intracellular concentrations of lysine, isoleucine, leucine and of some of the non-essential amino acids. 4. After peritoneal dialysis for 22 h, the plasma concentration of several amino acids decreased but the intracellular concentrations of most amino acids did not change significantly. 5. Intravenous administration of essential amino acids and histidine during the last 4 h of dialysis increased in muscle the total free amino acids, the ratio of essential to non-essential amino acids and the valine and phenylalanine concentrations. 6. The results demonstrated that the plasma and muscle concentrations of several amino acids are grossly abnormal in chronic uraemia. Non-dialysed and dialysed patients exhibit important differences, especially in the intracellular amino acid patterns. Infusion of essential amino acids may result in enhancement of protein synthesis.

To establish comprehensive reference ranges for plasma amino acid and whole blood taurine concentrations in healthy adult cats eating commercial diets and to evaluate the relationships of age, sex, body weight, body condition score (BCS), dietary protein concentration, and dietary ingredients with plasma amino acid and whole blood taurine concentrations. 120 healthy adult cats. Blood samples and a complete health and diet history were obtained for each cat, and reference intervals for plasma amino acid and whole blood taurine concentrations were determined. Results were analyzed for associations of age, breed, sex, body weight, BCS, use of heparin, sample hemolysis and lipemia, dietary protein concentrations, and dietary ingredients with amino acid concentrations. 95% reference intervals were determined for plasma amino acid and whole blood taurine concentrations. A significant difference in amino acid concentrations on the basis of sex was apparent for multiple amino acids. There was no clear relationship between age, BCS, body weight, and dietary protein concentration and amino acid concentrations. Differences in amino acid concentrations were detected for various dietary ingredients, but the relationships were difficult to interpret. This study provided data on plasma amino acid and whole blood taurine concentrations for a large population of adult cats eating commercial diets. Plasma amino acid and whole blood taurine concentrations were not affected by age, BCS, or body weight but were affected by sex and neuter status. Dietary protein concentration and dietary ingredients were not directly associated with plasma amino acid or whole blood taurine concentrations.

Amino acid losses during hemodialysis with infusion of amino acids and glucose

The amino acid content of soft wheat grain was analyzed depending on the variety. It was found that the content of lysine, leucine, phenylalanine, tyrosine and cystine varies the most from the weather conditions of growing season. The total weight of amino acids varies from 14,01 to 17,46 % of grain depending on the variety of soft wheat. The share of indispensable amino acids is 27–29 % of their total mass. However, the sum content of indispensable amino acids varies significantly depending on the variety and line – from 3,81 to 5,10 %. The highest content of phenylalanine (0.55 %), lysine (0.51 %) and leucine (0.47 %) in the grain of soft wheat Panonicus (st) variety was found. The lowest methionine content is 0.1 %. The remaining amino acids ranged from 0,39 to 0,46 %. Among the dispensable amino acids, there is the highest content of glutamine (3,54 %) and proline (1.11 %), and the lowest content of cystine (0.1 %). The variation coefficient of the samples over the years of research was average for the amino acids serine, glutamine, glycine and arginine – low, histidine, asparagine and methionine – medium, and for the rest - high,. It is obvious that the content of amino acids also varies significantly depending on the weather conditions of the growing season of winter wheat. The content of indispensable amino acids in the grain of Kulundinka soft wheat varied from 0.16 to 0.95 %. The content of threonine (0,78 %) and leucine(0,95 %) was the highest, the content of methionine was the lowest – 0.16 %. The content of other indispensable amino acids ranged from 0,50 to 0,74 %. The content of dispensable amino acids ranged 0,22–4,03 %. The highest content was of proline (1,67 %) and glutamine (4,03 %). The content of other dispensable amino acids varied from 0,80 до 1,12 %. It was found that the content of basic amino acids in wheat grain of P 7 soft line varied from 0,09 to 3,92 %. Thus, the content of indispensable amino acids is dominated by threonine, lysine, valine and leucine (0,54–0,78 %). Among the indispensable are proline, asparagine, and glutamine (1,07–3,92 %). The lowest content among indispensable amino acids was characterized by methionine (0.09 %), among dispensable – cystine (0,27 %). The grain of Kulundinka wheat variety and P 7 line obtained by hybridization of Triticum aestivum L. / Triticum spelta L. has the highest number of indispensable amino acids, which are recommended to be used to obtain high-quality grain.

Minimally invasive thoracoscopic esophagectomy has potential advantages in minimizing the impairment of respiratory function and reducing surgical stress. However, thoracoscopic esophagectomy occasionally results in anesthesia-induced hypothermia, particularly in cases involving artificial pneumothorax with CO2. Thermogenesis induced by amino acid administration has been reported during anesthesia. Here, we tested the efficacy of amino acid treatment for the prevention of hypothermia, and we investigated the potential of this treatment to reduce postoperative infectious complications after thoracoscopic esophagectomy. We conducted a randomized trial in patients with esophageal cancer who underwent thoracoscopic esophagectomy in the prone position in two groups and analyzed the incidences of hypothermia and surgical complications. One-hundred and thirty patients were randomized. Administration of amino acids resulted in a significant increase in core body temperature. In the saline (n = 60) and amino acid (n = 70) administration groups, 30% and 14.2% of patients, respectively, experienced infectious surgical complications (P = 0.029), and 21.6% and 22.8% of patients, respectively, experienced noninfectious surgical complications (P = 0.86). Univariate analysis revealed that blood loss and amino acid administration were significant factors for infectious surgical complications. Multivariate analysis revealed that amino acid administration was an independent factor reducing infectious surgical complications (P = 0.025, 95% confidence interval: 0.105-0.864). Administration of amino acids prevents hypothermia and reduces postoperative infectious complications after thoracoscopic esophagectomy.

Immediate commencement of amino acid supplementation in preterm infants: Effect on serum amino acid concentrations and protein kinetics on the first day of life

In broad been seeds (cultivars Comprimo RS and Threefoldwhite) harvested at four stages of maturity, which corresponded to dry matter content at the levels of I—25%, II—30%, III—35% and IV—40%, the content of amino acids was determined (g 16 g N−1). The determinations concerned raw broad bean and frozen products cooked for consumption. The content of total and essential amino acids was similar in the two cultivars. With increasing maturity the content of total amino acids and essential amino acids varied, showing a tendency to increase between maturity stages I and IV in all the amino acids, except aspartic acid and alanine in Threefoldwhite. In both cultivars the content of cystine and glutamic acid showed the most rapid rise. Compared with raw broad beans, intact seeds cooked for consumption contained more total amino acids. In products of Comprimo RS the total content of amino acids and essential amino acids was similar in intact seeds and in the dehulled seeds. In products from Threefoldwhite the content of total amino acids and essential amino acids was higher in intact seeds than in dehulled seeds except in the most mature sample where these values were similar. The limiting amino acids were methionine with cystine in both raw broad bean and cooked seeds. © 1999 Society of Chemical Industry

Nutrient-induced thermogenesis (NIT) after parenteral administration of amino acids (AAs) was investigated in rats and compared with result obtained with intragastric administration. Resting energy expenditure was measured with a new type of open-circuit indirect calorimeter. The NIT increased shortly after parenteral AAs administration and reached a steady state in 30 minutes. The change in resting energy expenditure (the increment of resting energy expenditure over preinfusion baseline values) showed a significant relationship not only with the amount of infused AAs but also with the AA concentration in the portal vein. Furthermore, the increase in plasma AA concentrations in the portal vein was proportional to the amount of the particular AA infused. This relationship held true over the entire range tested. NIT with parenteral infusion (11% to 12%) was lower than that with intragastric infusion (20% to 23%). Plasma insulin, corticosterone, and glucagon levels increased after both parenteral and intragastric AAs administration, but the two methods did not show any significant differences in hormonal changes. The plasma aminogram of the portal vein after intragastric infusion was compared with that after parenteral infusion. Total plasma AA concentration and the levels of glutamine, lysine, arginine, glutamate, aspartate, and histidine were lower but the level of isoleucine was higher after intragastric infusion. On the basis of these results, it is believed that parenteral administration of AAs can induce thermogenesis, which may be regulated by the intraportal AA concentration. Considering the remarkable decrease in glutamine in the portal vein after intragastric infusion, the cost of intestinal metabolism may predominantly contribute to the NIT resulting from intragastric infusion.

Early postnatal administration of intravenous amino acids to preterm, extremely low birth weight infants

Changes in Amino Acid Concentrations over Time and Space around an Impact Injury and Their Diffusion Through the Rat Spinal Cord

Correlation between amino acid induced changes in energy expenditure and protein metabolism in humans