Synechococcus sp. strain PCC 8806 and Synechococcus sp. strain PCC 8807 were tested in microcosm experiments for their ability to calcify when exposed to a fixed
calcium concentration of 3.4 mM and dissolved inorganic carbon concentrations of 0.5, 1.25 and 2.5 mM.
Studies comparing high
calcium concentration diet (3.3 % DM) with normal diet (1.1 % DM) showed that too much calcium inhibits dog's joint, cartilage and bone growth, and may lead to diseases like osteochondrosis, radius curvus syndrome and stunned growth [23, 24].
The cascade of events leading to calcium oxalate stone formation is largely unknown, but there is some indication that normal increases in urinary
calcium concentration after feeding could be involved in stone formation.
Some of these factors such as lower urine volume, higher
calcium concentration and higher calcium oxalate RSS seen in small dogs may contribute to the increased prevalence of calcium oxalate urolithiasis in this group.
A pretreatment serum
calcium concentration < 7 mg / dL (< 6 mg / dL in cats) confirms the diagnosis.
The less phosphorus in the diet, the higher urine
calcium concentration will be.
Vitamin D is a hormone the kidneys produce that controls blood
calcium concentration and impacts the immune system.
The exact mechanism how dopamine enhances hGH is still being researched, however experts believe that it does so by increasing another hormone called GHRH which acts by increasing intracellular
calcium concentration in pituitary cells which secrete growth hormone.
The calcium concentration in the blood is tightly regulated, and any excess is stored in bones.
Simultaneous exposure to ATP and phenylephrine induces a sustained elevation in the intracellular
calcium concentration in supraoptic neurons.
In addition, the effect of the high
calcium concentration was stronger in the calcification rates during day compared to the night (Fig. 2).
In addition, we explored the differential genes expressions between day and night in the presence of high
calcium concentration seawater in order to identify the presence of networks of regulatory genes in a basal metazoan.
During night - time (23:00), calcification rates were not influenced by
the calcium concentration additions (Fig. 2 and File S1).
The high
calcium concentration treatment during the day revealed genes associated with cell junction organization process exhibiting up - regulation (Fig. 4).
Exposing S. pistillata to seawater with an elevated
calcium concentration resulted in up - regulation of gene expression during the day relative to the night.
In one series, excised rat heart muscle tissue was mounted onto a device that directly measured the force of contraction at the same time as intracellular
calcium concentration.
As this only happened in specific precise areas and at relatively high levels — it could also be deduced that the elusive sites of
calcium concentration in neurons had finally been found.
And when
the calcium concentration reaches to a certain value, the worm choose the direction as a «deliberate» decision.
The nerve cell's activity was measured via concentration of calcium ion in the cell, and the team analyzed the changes in
calcium concentration using a mathematical model.
This enabled them to «smuggle» calcium ions into cells and see what happened to sodium channels when
the calcium concentration changed abruptly.
Using the robotic microscope system, they found that, when a worm is trying to find out the favorable direction to move away from the odor,
the calcium concentration in a nerve cell raises slowly according to the mathematical integration of the amount of decrease in the odor concentration, that is, it adds up for a certain period of time.
Calcium ions rapidly stream into the presynaptic terminal and
the calcium concentration in the presynaptic terminal rises.
The reason may be an eggshell - like mineral layer that the virus acquires due to the high
calcium concentration in the intestines of birds.
Measurement with the fluorescent calcium indicator fura - 2 indicated that the IgG treatment reduced potassium - stimulated increase in free intracellular
calcium concentration.
This increased
calcium concentration, in turn, triggers their transformation from a static to a mobile form, allowing them to begin sealing off the wound.
Neural signals are transmitted within neurons by changing
calcium concentrations, so the researchers used this technique to measure the amount of calcium contained within the Purkinje cells in real time.
«We thought that the conflicting results for sodium channels might be related to difficulties in existing methods to control
the calcium concentrations that might affect these channels,» Ben - Johny says.
They found that, as with calcium channels, increasing
calcium concentrations caused calmodulin to bind within the resemblance element of sodium channels and prevent their opening, just as in calcium channels.
None of the sites showed a decrease in
calcium concentrations in the organic layer, and a few showed an increase.
Monk notes, however, that other studies have shown that the swishing cilia also influence
calcium concentrations, and it is possible that a similar effect is at work in developing mice.
We observed similar robust increases of intracellular
calcium concentrations in response to KCl and ATP in both GFP - expressing (n = 28) and GFP - nonexpressing cells (n = 12), whereas 5 - HT elicited an increase in intracellular calcium only in GFP - expressing cells (KCl: t (40) = 0.98, p = 0.33; ATP t (38) = 1.04, p = 0.30; 5 - HT: t (38) = 5.24, p < 0.0001 Student's t tests; Fig. 4A, B, F).
Four coral fragments of S. pistillata were incubated for 1.5 h in each of the two different
calcium concentrations (SW, SW + 100), and for two time points: in the mid-day (11:00) and at night - time (23:00).
This will be achieved by exposing the coral to seawater with high
calcium concentrations to induce an alteration in gene expression profiles, identified using a DNA microarray analysis.
Gene expression was compared between corals treated with elevated and normal
calcium concentrations.
During the night, coral fragments treated with high
calcium concentrations showed active genes that are involved in the mitochondrial synthesis of ATP and ribosomal metabolism.
Following the concept that seawater Ωarag is a function of CO 3 2 − and calcium ion -LRB-[Ca2 +]-RRB- concentrations (Cyronak, Schulz & Jokiel, 2016), Longdon et al. (2000) and Marshall & Clode (2002) showed that exposing scleractinian corals to seawater with high
calcium concentrations induces high calcification rates.
Their exact conclusion was «an increase in serum
calcium concentrations is associated with an increased risk of type 2 diabetes in individuals at high cardiovascular risk».
Thanks to research over the past 15 years or so, we now know that the bitter taste receptors in our mouths release neurotransmitters that stimulate, via the vagus nerve, an increase in intracellular
calcium concentrations.
The ways that we regulate phosphorus and
calcium concentrations in the body are complex, and involve the kidney, the lungs, and a number of hormones.
Excitable cells, such as skeletal muscle and nerve cells, contain voltage - dependent calcium channels in their cell membranes that allow for rapid changes in
calcium concentrations.
Finally, acute changes in blood
calcium concentrations do not seem to elicit the secretion of the phosphaturic hormone fibroblast growth factor 23 (FGF - 23), which is produced by bone - forming cells (osteoblasts / osteocytes) in response to increases in phosphorus intake (see the article on Phosphorus)(2).
Schulz et al. (1993) found that although ingestion of both types of resistant starch lowered the cecal pH and increased
the calcium concentrations in the liquid phase of the cecal contents, only ingestion of the native resistant starch lowered the ileal pH and increased the calcium and magnesium concentrations in the liquid phase of the ileal contents.
The physiological functions of calcium are so vital to survival that the body will stimulate bone resorption (demineralization) to maintain normal blood
calcium concentrations when calcium intake is inadequate.
Calcium concentrations in the blood and fluid that surround cells are tightly controlled in order to preserve normal physiological function.
Because there is a small risk that temporary interference with calcium regulation may occur, it is usually recommended that cats remain hospitalised for a few days after surgery, and blood
calcium concentrations are monitored during this time.
Other, but rarer, causes of metastatic calcification include kidney disease (this is the most common cause in cats), malignant tumors producing abnormal hormones that increase blood
calcium concentrations (e.g. tumors of the lymphoid system and glands of the anal sac), diabetes mellitus and lung disease.
Calcinosis cutis develops in some animals but not others, even though they have similar steroid hormone or blood
calcium concentrations.
Calcium absorption in the intestinal tract of rabbits is much higher than in other species and does not depend on vitamin D, so high - calcium diets may lead to increased blood
calcium concentrations.
Effect of Processing on the Oxalate and
Calcium Concentrations of Two Local Dishes, Cơm Hến and Canh Chua Bạc Hà, Prepared from Taro Stems
Not exact matches
Dried figs have a higher
concentration of everything fresh figs contain, including
calcium, potassium, fiber, and sugar.