scholarly journals Investigating effect of Amino Acids Leucine, Valine and Alanine on Alkaline Phosphatase Activity of purified Acetone fractions of Sweet Lemon, Garlic and Onion

2019 ◽  
Vol 10 (1) ◽  
pp. 34-38
Author(s):  
Ramin Tavakoli ◽  
Shahdokht Rastegar ◽  
Mansoor Khaledi ◽  
Ali Nouri ◽  
Mostafa Madmoli ◽  
...  
Keyword(s):  
Amino Acids ◽  
Alkaline Phosphatase ◽  
Allium Sativum ◽  
Organic Phosphorus ◽  
Enzyme Level ◽  
Citrus Limon ◽  
Inhibitory Effects ◽  
Saline Extract ◽  
Allium Cepa L ◽  
Alkaline Phosphate

Alkaline phosphatase enzyme (ALP, ALKP, ALPase, Alk Phos) (EC 3.1.3.1) produced by plants and microbes is presumed to convert organic phosphorus into available pi, which is absorbed by plants. Considering the importance of Alkaline phosphate enzyme and the balance between its function in the development of various diseases by increasing and decreasing the enzyme level by enzyme activating and regulating compounds, including amino acids and ions, which act as coenzyme and cofactor for the enzyme Can be a major role in Disease improvement. This study aims to comparatively investigate the inhibiting effect of the three Amino Acid as well as Alanine, Leucine and valine on Alkaline phosphatase was which extracted from Sweet Lemon (Citrus limon (L.) Osbeck), Garlic (Allium sativum L.) and Onion (Allium cepa L.). In this study, Leucine, Alanine and Valine amino acids showed strong inhibitory effects 23%, 26% and 34% respectively activity of Alkaline phosphatase obtained saline extract of plants Sweet Lemon, Garlic and Onion.  

scholarly journals Effects of Escherichia coli Alkaline Phosphatase PhoA on the Mineralization of Dissolved Organic Phosphorus

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3315
Author(s):  
Yanwen Zhou ◽  
Tingxi Zhang ◽  
Shengyan Jin ◽  
Siyu Chen ◽  
Yinlong Zhang
Keyword(s):  
Escherichia Coli ◽  
Amino Acids ◽  
Alkaline Phosphatase ◽  
Reaction Time ◽  
Organic Phosphorus ◽  
Phosphorus Concentration ◽  
Inhibition Rate ◽  
Dissolved Organic Phosphorus ◽  
Independent Manner ◽  
Phosphate Monoesters

Alkaline phosphatases, which play the key role in the mineralization of organic phosphorus, have been grouped into three distinct families, PhoA, PhoX, and PhoD. PhoA is still an important component of the Pho regulon for many microbes although its distribution is not as wide as that of PhoX and PhoD. However, several questions remain unclear about the effect of PhoA mineralization of dissolved organic phosphorus. In this study, the role of Escherichia coli alkaline phosphatase PhoA (hereinafter referred to as PhoA) in the mineralization of different organic phosphorus including phosphate monoesters, phosphate diesters, and phytic acids was investigated. The influence of the reaction time, organic phosphorus concentration, and L-amino acid on PhoA mineralization was examined. The results show that PhoA specifically hydrolyzes phosphate monoesters except for phytic acid and the optimal reaction time is around 12 h. The PhoA mineralization rate of glucose 6-phosphate disodium (G6P), 5′-adenosine monophosphate (AMP), and sodium glycerophosphate (BGP) significantly decreased by 38.01%, 55.31%, and 57.08%, respectively (p < 0.01), while the concentration of organic phosphorus increased from 0.50 to 5.00 mg/L. Overall, L-amino acids inhibited PhoA mineralization in a concentration-independent manner. The inhibitory effect of neutral amino acids serine (L-Ser) and tyrosine (L-Tyr) was significantly higher than that of basic amino acids arginine (L-Arg), lysine (L-Lys), and histidine (L-His). All the five amino acids can inhibit PhoA mineralization of AMP, with the highest inhibition rate observed for L-Tyr (23.77%), the lowest—for L-Arg (1.54%). Compared with other L-amino acids, L-Tyr has the highest G6P and BGP mineralization inhibition rate, with the average inhibition rates of 12.89% and 11.65%, respectively. This study provides meaningful information to better understand PhoA mineralization.

scholarly journals Non-Conventional Metal Ion Cofactor Requirement of Dinoflagellate Alkaline Phosphatase and Translational Regulation by Phosphorus Limitation

2019 ◽  
Vol 7 (8) ◽  
pp. 232 ◽  
Author(s):  
Xin Lin ◽  
Chentao Guo ◽  
Ling Li ◽  
Tangcheng Li ◽  
Senjie Lin
Keyword(s):  
Alkaline Phosphatase ◽  
Metal Ion ◽  
Translational Regulation ◽  
Organic Phosphorus ◽  
Niche Differentiation ◽  
Phosphorus Limitation ◽  
Marine Phytoplankton ◽  
Phosphate Limitation ◽  
Dissolved Organic Phosphorus ◽  
Metal Cofactor

Alkaline phosphatase (AP) enables marine phytoplankton to utilize dissolved organic phosphorus (DOP) when dissolved inorganic phosphate (DIP) is depleted in the ocean. Dinoflagellate AP (Dino-AP) represents a newly classified atypical type of AP, PhoAaty. Despite While being a conventional AP, PhoAEC is known to recruit Zn2+ and Mg2+ in the active center, and the cofactors required by PhoAaty have been contended and remain unclear. In this study, we investigated the metal ion requirement of AP in five dinoflagellate species. After AP activity was eliminated by using EDTA to chelate metal ions, the enzymatic activity could be recovered by the supplementation of Ca2+, Mg2+ and Mn2+ in all cases but not by that of Zn2+. Furthermore, the same analysis conducted on the purified recombinant ACAAP (AP of Amphidinium carterae) verified that the enzyme could be activated by Ca2+, Mg2+, and Mn2+ but not Zn2+. We further developed an antiserum against ACAAP, and a western blot analysis using this antibody showed a remarkable up-regulation of ACAAP under a phosphate limitation, consistent with elevated AP activity. The unconventional metal cofactor requirement of Dino-AP may be an adaptation to trace metal limitations in the ocean, which warrants further research to understand the niche differentiation between dinoflagellates and other phytoplankton that use Zn–Mg AP in utilizing DOP.

EFFECTS OF HYPOGLYCIN A ON THE METABOLISM OF AMINO ACIDS BY LIVER SLICES

1964 ◽  
Vol 42 (1) ◽  
pp. 139-142 ◽  
Author(s):  
S. J. Patrick ◽  
L. C. Stewart
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Glutamic Acid ◽  
Rat Liver ◽  
Inhibitory Effects ◽  
Liver Slices

The effects of hypoglycin A on the metabolism of L-leucine-C14, L-alanine-C14, and L-glutamic-acid-C14 by rat liver slices have been investigated. Hypoglycin exerted markedly inhibitory effects on the conversion of leucine-C14 to fatty acid, cholesterol, and CO2. Conversion of alanine-C14 and glutamic acid-C14 to fatty acids was also inhibited by hypoglycin. No effects of hypoglycin on the conversion of C14-amino acids into protein or glycogen were demonstrated.

The inhibitory effects of vancomycin on rat bone marrow–derived mesenchymal stem cell differentiation

2021 ◽  
pp. 1-5
Author(s):  
Kari Hanson ◽  
Carly Isder ◽  
Kristen Shogren ◽  
Anthony L. Mikula ◽  
Lichun Lu ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Alkaline Phosphatase ◽  
Osteogenic Differentiation ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
High Dose ◽  
Inhibitory Effects ◽  
Alizarin Red ◽  
Osteogenic Factors

OBJECTIVE The use of intrawound vancomycin powder in spine surgery has been shown to decrease the rate of surgical site infections; however, the optimal dose is unknown. High-dose vancomycin inhibits osteoblast proliferation in vitro and may decrease the rate of solid arthrodesis. Bone marrow–derived mesenchymal stem cells (BMSCs) are multipotent cells that are a source of osteogenesis in spine fusions. The purpose of this study was to determine the effects of vancomycin on rat BMSC viability and differentiation in vitro. METHODS BMSCs were isolated from the femurs of immature female rats, cultured, and then split into two equal groups; half were treated to stimulate osteoblastic differentiation and half were not. Osteogenesis was stimulated by the addition of 50 µg/mL l-ascorbic acid, 10 mM β-glycerol phosphate, and 0.1 µM dexamethasone. Vancomycin was added to cell culture medium at concentrations of 0, 0.04, 0.4, or 4 mg/mL. Early differentiation was determined by alkaline phosphatase activity (4 days posttreatment) and late differentiation by alizarin red staining for mineralization (9 days posttreatment). Cell viability was determined at both the early and late time points by measurement of formazan colorimetric product. RESULTS Viability within the first 4 days decreased with high-dose vancomycin treatment, with cells receiving 4 mg/mL vancomycin having 40%–60% viability compared to the control. A gradual decrease in alizarin red staining and nodule formation was observed with increasing vancomycin doses. In the presence of the osteogenic factors, vancomycin did not have deleterious effects on alkaline phosphatase activity, whereas a trend toward reduced activity was seen in the absence of osteogenic factors when compared to osteogenically treated cells. CONCLUSIONS Vancomycin reduced BMSC viability and impaired late osteogenic differentiation with high-dose treatment. Therefore, the inhibitory effects of high-dose vancomycin on spinal fusion may result from both reduced BMSC viability and some impairment of osteogenic differentiation.

Effects of Onion (Allium cepa L.) and Garlic (Allium sativum L.) Essential Oils on the Aspergillus versicolor Growth and Sterigmatocystin Production

2012 ◽  
Vol 77 (5) ◽  
pp. M278-M284 ◽  
Author(s):  
Sunčica Kocić-Tanackov ◽  
Gordana Dimić ◽  
Jelena Lević ◽  
Ilija Tanackov ◽  
Aleksandra Tepić ◽  
...  
Keyword(s):  
Essential Oils ◽  
Allium Cepa ◽  
Allium Sativum ◽  
Aspergillus Versicolor ◽  
Allium Cepa L

Allium cepa L. Allium fistulosum L. Allium ramosum L. Allium sativum L. Amaryllidaceae

2020 ◽  
pp. 159-169
Author(s):  
Narel Y. Paniagua-Zambrana ◽  
Rainer W. Bussmann ◽  
Carolina Romero
Keyword(s):  
Allium Cepa ◽  
Allium Sativum ◽  
Allium Fistulosum ◽  
Allium Cepa L

scholarly journals A study on biochemical composition of the sting gland (poison gland) and the reservoir (poison sac) of the dwarf honey bee Apis florea F. workers

2014 ◽  
Vol 6 (1) ◽  
pp. 101-105
Author(s):  
Neelima R. Kumar ◽  
Anita Devi
Keyword(s):  
Amino Acids ◽  
Alkaline Phosphatase ◽  
Honey Bee ◽  
Biochemical Composition ◽  
Free Amino ◽  
Distal Part ◽  
Wide Spectrum ◽  
Venom Gland ◽  
Apis Florea ◽  
Exocrine Glands

The glands associated with the sting apparatus of worker honey bee Apis florea produce Venom which is known to be composed of a wide spectrum of biomolecules ranging from biogenic amines to peptides and proteins. The Venom apparatus showed the presence of two important associated exocrine glands i.e. Venom gland and Dufors gland. The secretions of both glands are apocrine and are released into the lumen to be stored in the venom sac. The presence of some exocrine cells in the distal part of venom sac which is otherwise known to only store the component of Venom gland led to the present study. The present study that there were considerable differences in the biochemical composition of Venom gland and Venom sac secretions of Apis species The concentration of lipids (Sting gland =1.423±0.0001 and Reservoir = 1.21±0.0067), proteins (Sting gland=0.440±0.0226, Reservoir = 0.390± 0.032), activity of acid phosphatase (Sting gland=112.09±21.100, Reservoir=22.63±1.467) and hexokinase (Sting gland=20.7±4.016, Reservoir=10.66±2.465) was found to be more in case of Venom gland while cholesterol(Sting gland=0.138±0.0161 reservoir=0.324±0.00323), glucose (Sting gland=189±1.31, Reservoir=321±7.19), free amino acids, and activity of alkaline phosphatase (Sting gland=21.03±0.195 Reservoir=22.4±0.685) was more in Venom sac. Glycogen was absent in both Venom gland and Venom sac of Apis species as confirmed by the absence of glucose-6-phosphatase activity. It is established from the present study that Venom sac also secretes various biochemicals and enzymes which are added to the total Venom.

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