The effect of adrenaline on insulin releasing polypeptide (IRP) mediated insulin releasein vivo in the rat

Shabaan, A.; Turner, D. S.

doi:10.1007/bf01221641

Cited by 2 publications

(4 citation statements)

References 11 publications

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“…The nature of the acid did not significantly affect the desorption of the reagent. At equal concentrations of HNO 3 and HCl the desorption of the reagent was comparable. Presence only one sulfonate group in the NNS molecule causes weaker fixation of NNS on the surface of SiO 2 -PHMG than NRS, having two sulfonate groups [42].…”

Section: Resultsmentioning

confidence: 90%

“…Stability of fixation of NNS on the surface of SiO 2 -PHMG was studied by treating of the sorbent with surface concentration of NNS 14 µmol g -1 with solutions of NaCl, HCl and HNO 3 . The results are represented in (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…There is certain content of cobalt that is necessary for living organisms [1,2]. Physiological and pathophysiological effects of cobalt are various [3,4]. In plants cobalt has a positive effect on photosynthesis, activates enzymes of protein metabolism.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Cobalt in Soils and Natural Waters Using Silica Gel Modified with Polyhexamethylene Guanidine and Nitroso-N-Salt

2018

AMSE

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Highly sensitive and simple method was developed for preconcentration and determination of trace amounts of cobalt in natural waters and soils using diffuse reflectance spectroscopy was developed. Method is based on the application of the new sorbent -silica gel sequentially modified with polyhexamethylene guanidine and 2-nitroso-1-naphthol-4-sulfonic acid sodium salt (nitroso-N-salt). Optimal conditions of solid-phase extraction of cobalt (II) such as stirring time, pH and volume of the solution, surface concentration of the reagent were determined. During sorption, intensively colored complex of cobalt (III) with nitroso-N-salt, that have a stripe in diffuse reflectance spectrum with maximum at 530 nm, was formed. Sorption-photometric method of cobalt determination directly in the sorbent phase by the color of its complex with nitroso-N-salt using diffuse reflectance spectroscopy was developed. The linearty of calibration curve depended on the surface concentration of nitroso-N-salt. For the surface concentration of nitroso-N-salt of 2.8 µmol g -1 the linearty was maintained in the concentration range of 0.05 -5.0 µg Co per 0.100 g of the sorbent, or 0.005 -0.50 µg mL -1 if the sorption was carried out from 10 mL of the solution. As the surface concentration of the reagent decreased, the range of linearty of the calibration curve narrowed. The detection limit was calculated as 0.01 μg per 0.100 g of the sorbent (or 1 ng mL -1 if the sorption was carried out from 10 mL of the solution) and didn't depend on the surface concentration of the reagent. Method was applied to the determination of cobalt in natural waters and soils. The accuracy of the results was confirmed by inductively coupled plasma optical emission spectroscopy and recovery test of spiked samples.In order to investigate desorption of the organic reagent SiO 2 -PHMG-NNS was treated with 0.001 -6.0 mol L -1 solutions of HCl, HNO 3 , or NaCl.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Determination of Cobalt in Soils and Natural Waters Using Silica Gel Modified with Polyhexamethylene Guanidine and Nitroso-N-Salt

2018

AMSE

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“…Unlike crude extracts of intestinal mucosa, IRP regularly stimulated insulin release both in the rat (Turner and Marks, 1972) and the baboon (Turner et al, 1974a), but only in the presence of at least minimal hyperglycaemia. The insulinotropic effects ofan IRP-containing infusion were maintained for as long as the infusions continued and were markedly attenuated by simultaneous adrenaline administration (Shabaan et al, 1974). Shortly after his description of IRP, Turner obtained small amounts of each of three newly isolated intestinal hormones from their respective discoverers and tried them out in his bioassay system.…”

Section: Glucagonmentioning

confidence: 99%

The enteroinsular axis.

Marks

1978

Journal of Clinical Pathology

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The effect of adrenaline on insulin releasing polypeptide (IRP) mediated insulin releasein vivo in the rat

Cited by 2 publications

References 11 publications

Determination of Cobalt in Soils and Natural Waters Using Silica Gel Modified with Polyhexamethylene Guanidine and Nitroso-N-Salt

Determination of Cobalt in Soils and Natural Waters Using Silica Gel Modified with Polyhexamethylene Guanidine and Nitroso-N-Salt

The enteroinsular axis.

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