Radioactive sulphate (35S04) is readily taken up and ‘fixed’ by cartilage, from which it can be extracted in chondroitin sulphate (Bostrom & Mansson 1953). In autoradiographs the isotope is found at sites where acid mucopolysaccharides are formed (Curran & Kennedy 1955). Sulphate is incorporated into the muco­ polysaccharide molecule at an early stage in its synthesis (Schiller, Mathews, Cifone...

Proteoglycans are a family of structurally distinct, polyanionic complex carbohydrates composed of repeating disaccharide units. Proteoglycans include heparin, heparan sulphate, chondroitin 4-sulphate, chondroitin 6-sulphate, dermatan sulphate, and hyaluronic acid. Heparin is found in the granules of a subset of mast cells where it is bound to various mediators including histamine. Heparan sulp...

Effect of zinc sulphate was studied on histamine-induced contractions on guinea-pig ileum. In doses of 1.72 X 10(-7)M or less no effects were observed. Zinc sulphate in doses of 3.44 X 10(-7)M, 6.88 X 10(-7)M and 1.72 X 10(-6)M produced dual effect. Short exposure of tissue for 10 min to zinc sulphate resulted in significant dose dependent potentiation of histamine effect whereas after washing ...

The objective of the study aims to evaluate the combined protective effects of coenzyme Q10 and magnesium sulphate on isoproterenol induced myocardial damage in rats. CoenzymeQ10 (50 mg/kg) and magnesium sulphate (10 mg/kg) were administered orally to wistar rats in individual or in combination for 30 days.  At the end of this period, rats were administered isoproterenol (85 mg/kg i.p.) intrape...

FROMAGEOT & DESNUELLE [1935] proposed a method of estimation of pyruvic acid based on the oxidation of x-ketonic acids by ceric sulphate. The value of the method is diminished by the fact that numerous substances commonly encountered in biological material, e.g. lactic and citric acids, also react with ceric sulphate. The interference by lactic acid is not serious so long as the amount of the l...

A new database was developed to successfully model the solid and aqueous phase equilibria in a number of hydrometallurgical processes using the Mixed Solvent Electrolyte (MSE) model of the OLI Systems software. In order to validate the predictability of the model developed, a number of experimental measurements were conducted in multicomponent solutions containing NiSO4, H2SO4, MnSO4, HCl, etc....

The changes in concentration of oestrone, oestradiol (-17alpha and -17beta), oestrone sulphate and the oestradiol sulphates have been measured in allantoic and amniotic fluids and in maternal peripheral plasma throughout gestation. Oestrone sulphate was the major oestrone present in all of the fluids. It was measurable in allantoic fluid before Day 52 and reached a peak concentration of 475 ng/...

Magnesium sulphate has well known antiplatelet properties. Its effect on leptin-dependent platelet aggregation has not been studied previously. Thus, we performed this ex vivo study to investigate whether magnesium sulphate is able to inhibit leptin-dependent aggregation of human platelets. We obtained platelet rich plasma (PRP) from venous blood samples of 16 healthy male volunteers, and we me...

A field experiment was conducted to investigate the effect of soil application of zinc fertilizer on yield and yield components of wheat (Triticum aestivum L. cv. Pak-81) grown on calcareous soil in Pakistan. The levels of zinc sulphate were 0 (control), 5, 10, 15, 20, 25 and 30 kg ha and the zinc sulphate was combine-drilled at the time of sowing. Zinc sulphate increased the Leaf Area Index, t...

The best conditions for synthesis of starch hydroxypropyl sulphate as per the dry method were firstly established. This was done through a thorough investigation into factors affecting the synthesis including concentrations of both the NaOH catalyst and the 2-hydroxy-3-chloropropyl sulphate along with duration and temperature of the reaction. The resultant newly synthesized 2-hydroxy-3-chloropr...