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Some of the oxalate in urine is produced by the body. Calcium and oxalate in the diet play a part but are not the only factors that affect the formation of calcium oxalate stones. Dietary oxalate is an organic ion found in many vegetables, fruits, and nuts. Calcium from bone may also play a role in kidney stone formation.
The plant contains calcium oxalate crystals, making it unpalatable. Indigenous peoples of the Americas used most parts of the plant for food, however, cooking it for hours first to make it safe to eat. [4] [17] Historical accounts suggest that Native Americans may have used Peltandra virginica as a food source. They may have eaten the seeds and ...
In the mid-1980s there was a substantial increase in the number of calcium oxalate samples, and between 1994 and 2002, 55 percent of feline stones were calcium oxalate and 33 percent were struvite. This may have been caused by the use of dissolution diets for struvite stones in cats and modification of other diets to prevent struvite crystal ...
[16] [17] This includes the somewhat toxic (due to high concentrations of calcium oxalate) Epipremnum pinnatum (cf. E. aureum) plant, [18] [note 1] which the lizard eats without ill effect. [19] [note 2] Juvenile skinks often eat feces from adults in order to acquire the essential microflora to digest their food. [9]
In its raw form, the plant is toxic due to the presence of calcium oxalate, [70] [71] and the presence of needle-shaped raphides in the plant cells. However, the toxin can be minimized and the tuber rendered palatable by cooking, [ 72 ] or by steeping in cold water overnight.
Oxalate (systematic IUPAC name: ethanedioate) is an anion with the chemical formula C 2 O 2− 4.This dianion is colorless. It occurs naturally, including in some foods. It forms a variety of salts, for example sodium oxalate (Na 2 C 2 O 4), and several esters such as dimethyl oxalate ((CH 3) 2 C 2 O 4).
Calcium oxalate: 60% when urine is acidic (decreased pH) [71] Black/dark brown : Radio-opaque Some of the oxalate in urine is produced by the body. Calcium and oxalate in the diet play a part but are not the only factors that affect the formation of calcium oxalate stones. Dietary oxalate is found in many vegetables, fruits, and nuts.
Calcium is a common constituent of multivitamin dietary supplements, [8] but the composition of calcium complexes in supplements may affect its bioavailability which varies by solubility of the salt involved: calcium citrate, malate, and lactate are highly bioavailable, while the oxalate is less. Other calcium preparations include calcium ...