جستجوی مقالات مرتبط با کلیدواژه "conductometry" در نشریات گروه "پزشکی"

Kidney stone is one of diseases that more than ten percent of the population suffers from it. Calcium oxalate is the most well-known type of the kidney stones which no chemical medicinal treatment presented for it. The use of herbal products can be a good way to prevent the formation or dissolution of these stones. This study was carried out with the aim of determining Prunus avium L. tail herbal tea effect on the formation or dissolution of calcium oxalate.
In this study, the herbal tea of 4.0 g dried Prunus avium L. tail in 100.0 ml double distilled water was prepared and its effect on the formation and dissolution of calcium oxalate was investigated. The solubility of this salt in mixture containing 33.3% (v/v) of herbal tea was studied by complexometery and spectroscopy methods. The concentration of Ca2 in saturated calcium oxalate solution was determined by titration with 0.01 M Ethylenediaminetetraacetic acid and light emission in complexometric and spectroscopic methods, respectively. In order to investigate the formation rate of calcium oxalate salt, the titration of 0.05 M calcium chloride solution containing 33.3% (v/v) of herbal tea with 0.05 M sodium oxalate was performed.
The results of flame photometery, complexometery and conductometery techniques reveal that, although this herbal tea cannot have good effect on the dissolution of calcium oxalate stone, it significantly prevented the stone formation (P The results of this study show that Prunus avium L. tail herbal tea can be a good choice to prevent diseases in people disposed to kidney stones.

Kidney Calculi (mainly made ​​of calcium oxalate) is the third disease of urinary tract in which the side effects of surgery have caused particular attention to the use of plant products. The inhibition and disolution of calcium oxalate in solutions containing Alhaji maurorum have been studied in the present research.
In this laboratory research, after taking the aqueous extract of 10 grams of Alhaji maurorum by 300 ml of distilled water at gentle heating, the formation and dissolution of calcium oxalate in samples with and without 50 percentage of extract was investigated by complexometric, conductometric and flame photometric methods.
The effect of the extract on the precipitated inhibition was studied and the results of conductometric titration curve method showed a significant difference (150.0 µmol) between the concentration of calcuim in the absence (1000.0 µmol) and presence of the extract (850.0 µmol). The effect of extract on the stone dissolution was also examined by flame photometry and complexometry methods and the results showed that the amount of estimated calcium, based on dissolution of calcium oxalate crystals in the presence of extract, was 3.5 µmol lower than that in the absence of extract. The results reported in all the experiments were the mean value of at least three repeated measurements (P=0.05).
According to this study, Alhaji maurorum aqueous extract can prevent the formation of calcium oxalate crystals; however it does not have any significant effect on their dissolution.